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HomeMy WebLinkAbout20171156 Ver 1_Mitigation Plan_FINAL_July2019_20191210 Mitigation Plan Horne Creek Tributaries Mitigation Project Surry County, North Carolina FINAL VERSION NCDEQ DMS Project Identification # 100026 NCDEQ DMS Contract # 7181 Yadkin River Basin (Cataloging Unit 03040101) USACE Action ID Number: SAW-2017-01510 Contracted Under RFP # 16-006993 Prepared for: North Carolina Department of Environmental Quality Division of Mitigation Services 1652 Mail Service Center Raleigh, NC 27699-1652 July 2019 Page ii Prepared by: This mitigation plan has been written in conformance with the requirements of the following: • Federal rule for compensatory mitigation project sites as described in the Federal Register, Title 33, Navigation and Navigable Waters, Volume 3, Chapter 2, Section § 332.8, paragraphs (c)(2) through (c)(14). • NCDEQ Division of Mitigation Services In-Lieu Fee Instrument, signed and dated July 28, 2010. • North Carolina Administrative Code (NCAC), “Consolidated Buffer Mitigation Rule”, Rule 15ANCAC 02B .0295, Effective November 1, 2015, for all Riparian Buffer Mitigation. These documents govern NCDEQ Division of Mitigation Services operations and procedures for the delivery of compensatory mitigation. Kayne M. Van Stell Vice President, Ecosystem Design Services Water & Land Solutions, LLC 7721 Six Forks Road, Suite 130 Raleigh, NC 27615 Office Phone: (919) 614-5111 Mobile Phone: (919) 818-8481 Email: kayne@waterlandsolutions.com July 29, 2019 Regulatory Division Re: NCIRT Review and USACE Approval of the Horne Creek Tributaries Mitigation Plan; SAW-2017- 01510; NCDMS Project # 100026 Mr. Tim Baumgartner North Carolina Ecosystem Enhancement Program 1652 Mail Service Center Raleigh, NC 27699-1652 Dear Mr. Baumgartner: The purpose of this letter is to provide the North Carolina Division of Mitigation Services (NCDMS) with all comments generated by the North Carolina Interagency Review Team (NCIRT) during the 30-day comment period for the Horne Creek Tributaries Mitigation Plan, which closed on June 21, 2019. These comments are attached for your review. Based on our review of these comments, we have determined that no major concerns have been identified with the Draft Mitigation Plan, which is considered approved with this correspondence. However, several minor issues were identified, as described in the attached comment memo, which must be addressed in the Final Mitigation Plan. The Final Mitigation Plan is to be submitted with the Preconstruction Notification (PCN) Application for Nationwide permit approval of the project along with a copy of this letter. Issues identified above must be addressed in the Final Mitigation Plan. All changes made to the Final Mitigation Plan should be summarized in an errata sheet included at the beginning of the document. If it is determined that the project does not require a Department of the Army permit, you must still provide a copy of the Final Mitigation Plan, along with a copy of this letter, to the appropriate USACE field office at least 30 days in advance of beginning construction of the project. Please note that this approval does not preclude the inclusion of permit conditions in the permit authorization for the project, particularly if issues mentioned above are not satisfactorily addressed. Additionally, this letter provides initial approval for the Mitigation Plan, but this does not guarantee that the project will generate the requested amount of mitigation credit. As you are aware, unforeseen issues may arise during construction or monitoring of the project that may require maintenance or reconstruction that may lead to reduced credit. REPLY TO ATTENTION OF: DEPARTMENT OF THE ARMY WILMINGTON DISTRICT, CORPS OF ENGINEERS 69 DARLINGTON AVENUE WILMINGTON, NORTH CAROLINA 28403-1343 Thank you for your prompt attention to this matter, and if you have any questions regarding this letter, the mitigation plan review process, or the requirements of the Mitigation Rule, please call me at 919-554-4884, ext 60. Sincerely, Kim Browning Mitigation Project Manager for Henry Wicker Enclosures Electronic Copies Furnished: NCIRT Distribution List Paul Wiesner– NCDMS Matthew Reid—NCDMS Kayne VanStell—WLS DEPARTMENT OF THE ARMY WILMINGTON DISTRICT, CORPS OF ENGINEERS 69 DARLINGTON AVENUE WILMINGTON, NORTH CAROLINA 28403-1343 REPLY TO ATTENTION OF: CESAW-RG/Browning July 12, 2019 MEMORANDUM FOR RECORD SUBJECT: Horne Creek Tributaries Mitigation Site - NCIRT Comments during 30-day Mitigation Plan Review PURPOSE: The comments listed below were posted to the NCDMS Mitigation Plan Review Portal during the 30-day comment period in accordance with Section 332.8(g) of the 2008 Mitigation Rule. NCDMS Project Name: Horne Creek Tributaries Mitigation Site, Surry County, NC USACE AID#: SAW-2017-01510 NCDMS #: 100026 30-Day Comment Deadline: June 21, 2019 DWR Comments: 1. Section 3.1.4- Benthic Macroinvertebrates- DWR appreciates WLS performing the preconstruction monitoring for benthic macroinvertebrates. DWR looks forward to the results of post construction monitoring. 2. Table 14: please explain the differing measurement methodologies referred to in note 2. 3. Section 6.4- DWR likes the attention paid to wetlands on the site even though there are no wetland credits proposed for this project. In these cases, DWR is mostly concerned with maintaining the current wetland resources on site and when possible, enhancing or restoring the wetland resources on site. 4. Section 6.7- Water Quality Treatment Features- While DWR appreciates the installation of these features, their placement above reach R3 may negatively affect the flow for this intermittent stream. 5. In the Monitoring Section, there is no mention of macrobenthic monitoring. Does WLS intend to monitor macrobenthics during the monitoring phase and if so, what is your general protocol? 6. Design sheet 3- DWR would prefer to see specific bank slopes identified on the typicals. We realize these slopes may vary, however; we would prefer to see the slopes specified even if they are “on average”. 7. DWR believes that reaches R2 and R3 are at a high risk to lose flow or not have enough flow to maintain stream characteristics. 8. Design sheet 10- DWR would like to see the flow gauge moved to station 12+00 on reach R2. 9. While DWR will not require a flow gauge on reach R3, this reach should probably have at least a camera to document flowing conditions. 10. Design sheet 11- is the crossing on this sheet existing? One concern is it shows the crossing going through a wetland. DWR recommends this crossing be eliminated. In addition, three stream segments (R4, R4a and R4b) will be constructed in or immediately adjacent to wetlands. DWR recommends installation of a gauge at station 22+00 on R4 on stream left. If the crossing is not removed, DWR will want a plan on how the designer will maintain no net loss of wetlands on site. 11. Looking at the photos of reach R4a, particularly at the downstream reach and its confluence with R4, there does not appear to be a need for any channel construction. Please substantiate why channel construction is needed in this area. Kim Browning, USACE: 1. R2 and R3 have very small watersheds, concern about maintaining flow and jurisdiction. Recommend camera points and flow gauges here. 2. Design Sheet 10: It appears that there are three BMPs within the easement. Please ensure that these features are not in the jurisdictional areas as it is unclear on the maps and design sheets, and that their short-term maintenance is discussed in the text, if any is necessary. 3. Even though there are no wetland credits being sought, and existing wetlands are fairly small, the restoration of reach 4 appears to run through WD. Please ensure that permanent impacts to these wetlands during construction do not result in loss of function, though it is anticipated that overall wetland function will improve from increased hydrology in this area. It’s recommended that a temporary veg plot be placed in this area. 4. It would be helpful to depict photo points on Figure 9. 5. Section 4.1.2 Functional Uplift Potential and Table 11: The functional pyramid is cited to show existing conditions for each category, and was used to describe the functional uplift potential of the project, which is appreciated. Please note that the functional pyramid and SQT tool have not been approved for use by the IRT in determining success for mitigation projects. It would be interesting to see the correlation of the NCSAM assessment compared to the SQT throughout the project. Furthermore, three of the reaches are already scored as FAR and the proposed condition is also FAR. Please justify the functional uplift if the conditions are not changing. 6. Table 12 and Table 23: Hydraulics, the BHR goal should read not to exceed 1.2. 7. Page 41, last paragraph and Table 21: please ensure that red maple are not included in the planting plan. 8. Section 7.1: Stream Hydrology—“In addition to the two bankful flow events, two…” is confusing. It should read four bankful events. a. Jurisdictional Stream Flow: Please add a statement that intermittent streams should be added requiring at least 30-days consecutive flow within a calendar year. b. Stream Profiles: The ER should be no less than 1.4 for B type channels. c. Stream Horizontal Stability: It would be beneficial to have a specific measurement parameter, for example, BHR and ER at any measured riffle cross-section should not change by more than 10% from the baseline condition during any given monitoring interval. 9. Section 7.3: Please include a vigor standard for vegetation of 7 feet high in year five and 10 feet high in year 7. 10. Did I miss the section on site constraints or potential risks? 11. Buffer Widths: Portions of R1, R2, and R5 do not meet the minimum buffer width of 30 ft. This is approximately 11% of the total restored length, which exceeds the guidance allowing no more than 5% of the total project length. Would the 11% change if you calculated the total project length, verses only using the restored length? If the result is still over 5%, the buffer tool needs to be used. If the Buffer Tool is used, please clearly show the loss or addition of credits in the Table 1 and 14. a. The Buffer calculation table in the appendix, Table 1 and Table 14 all appear to have different credit totals. Please clarify. Kim Browning Mitigation Project Manager Regulatory Division July 29, 2019 US Army Corps of Engineers Regulatory Division, Wilmington District Attn: Kim Browning 3331 Heritage Trade Drive, Suite 105 Wake Forest, NC 27587 RE: WLS Responses to NCIRT 30-day Review Comments Regarding Task 3 Submittal, Final Mitigation Plan Approval for the Horne Creek Tributaries Mitigation Project, USACE AID# SAW-2017-01510, NCDEQ DMS Full-Delivery Project ID #100026, Contract #7181, Yadkin River Basin, Cataloging Unit 03040101, Surry County, NC Dear Ms. Browning: Water & Land Solutions, LLC (WLS) is pleased to provide our written responses to the North Carolina Interagency Review Team (NCIRT) review comments dated July 12 th, 2019 regarding the Final Draft Mitigation Plan for the Horne Creek Tributaries Mitigation Project. We are providing our written responses to the NCIRT’s review comments below, which includes editing and updating the Final Draft Mitigation Plan and associated deliverables accordingly. Each of the NCIRT review comments is copied below in bold text , followed by the appropriate response from WLS in regular text: DWR Comments: 1. Section 3.1.4 - Benthic Macroinvertebrates - DWR appreciates WLS performing the preconstruction monitoring for benthic macroinvertebrates. DWR looks forward to the results o f post construction monitoring. Response: WLS intends to monitor macroinvertebrate communities and aquatic health post - construction through MY7 using methods and procedures defined by DWR’s “Standard Operating Procedures for the Collection and Analysis of Benthic Macroinvertebrates” (NCDWR, 2016) as mentioned Section 3.1.4 and in Table 23 ‘Proposed Monitoring Plan Summary’. The proposed sample locations are shown on Figure 9 and will be taken at restored reaches R1/R5. It should be mentioned that the footnote under Table 23 states “Level 4 and 5 project parameters and monitoring activities states that the results will not be tied to performance standards nor required to demonstrate success for credit release.” To provide further emphasis, the followin g language is also included under Section 4.1.3-Restoration Potential of the mitigation plan, “Not all functional categories and parameters, such as water quality (Physicochemical - Level 4) and performance standards listed in the SQT will be compared or required to determine project success and stream mitigation credit and debit scenarios.” 2. Table 14: please explain the differing measurement methodologies referred to in note 2. Response: WLS has deleted the note since it not necessary nor does it clarify the table contents. During the project’s proposal stage, we used GIS shapefiles and field hip chains to estimate the total existing stream length. The difference between the existing stream lengths estimated at the proposal stage (and the associated proposed stream mitigation credits) and existing stream lengths measured during the existing condition s survey presented in the mitigation plan is a result of a detailed professional topographic survey conducted i n support of project development. Using the existing conditions survey, WLS used the surveyed stream thalweg which provided more accurate data to determine the actual stream thalweg length. 3. Section 6.4 - DWR likes the attention paid to wetlands on the site even though there are no wetland credits proposed for this project. In these cases, DWR is mostly concerned with maintaining the current wetland resources on site and when possible, enhancing or restoring the wetland resources on site. Response: WLS appreciates the comment as we expect the stream restoration activities and design approaches to improve overall wetland hydrology and function as compared to the current conditions. A lthough the DMS project contract and RFP requirements are for stream mitigation only, we strive to improve aquatic resources to the fullest extent possible. Any expected permanent impacts to existing wetlands as shown on Figure 11 will be documented in the PCN permit application. 4. Section 6.7- Water Quality Treatment Features - While DWR appreciates the installation of these features, their placement above reach R3 may negatively affect the flow for this intermittent stream. Response: WLS appreciates the comment as we expect the water quality treatment features to improve overall downstream hydrology and function as compared to the current conditions. As discussed during the IRT post contract site visit and meeting minutes, the water quality improvement features will be installed above the jurisdictional determination (see stream origin points in PJD App 9 WOTUS information) as approved by the USACE and DWR. We anticipate these water quality improvement features will provide an overall benefit as they will increase infiltration and groundwater recharge, allow nutrient uptake within the riparian buffer areas, and diffuse flow energies rather than a rapid flush under current conditions. 5. In the Monitoring Section, there is no mention of macrobenthic monitoring. Does WLS intend to monitor macrobenthics during the monitoring phase and if so, what is your general protocol? Response: WLS intends to monitor macroinvertebrate communities and aquatic health post-construction through MY7 (in MY3 and MY7) per DWR’s “Standard Operating Procedures for the Collection and Analysis of Benthic Macroinvertebrates” (NCDWR, 2016) as mentioned in Section 3.1.4 and Table 23 ‘Proposed Monitoring Plan Summary’. The proposed sample locations are shown on Figure 9 and will be taken at restored reaches R1/R5. However, we did not include in performance monitoring section of the mitigation plan since the results will not be tied to performance standards nor required to demonstrate success for credit release. We are collecting this data across multiple restoration sites with intent that it may potentially be used to support future guidance and restoration goals, even if it does not demonstrate a measurable improvement from pre-construction conditions through the seven-year monitoring period. 6. Design sheet 3 - DWR would prefer to see specific bank slopes identified on the typicals. We realize these slopes may vary, however; we would prefer to see the slopes specified even if they are “on average”. Response: Revised the typical sections on design plan sheet 3 to include average side slopes. 7. DWR believes that reaches R2 and R3 are at a high risk to lose flow or not have enough flow to maintain stream characteristics. Response: As mentioned in response comment #3, we expect the restoration activities and proposed design approaches to improve the natural headwater flow regime and hydrological function as compared to the current conditions. We also expect that these water quality improvement features will provide a project benefit as they will increase infiltration and groundwater recharge, allow nutrient uptake within the riparian buffer area s, and diffuse flow energies rather than a rapid flush under current conditions. However, since the existing stream bed elevations will be raised along R2/R3, we will install one (1) automated data logger along R2 near station 12+00 to monitor surface flow and document any changes to stream characteristics during the monitoring period. 8. Design sheet 10 - DWR would like to see the flow gauge moved to station 12+00 on reach R2. Response: The proposed flow gauge has been moved from the R2/R3 confluence (station 13+13) to approximate station 12+00 on the design plan sheet 10 and figure 9. 9. While DWR will not require a flow gauge on reach R3, this reach should probably have at least a camera to document flowing conditions. Response: WLS will install a camera facing upstream at the confluence of R2/R3 to document surface flow conditions during the monitoring period as described in Sections 7 and 8 of the mitigation plan. 10. Design sheet 11 - is the crossing on this sheet existing? One concern is it shows the crossing going through a wetland. DWR recommends this crossing be eliminated. In addition, three stream segments (R4, R4a and R4b) will be constructed in or immediately adjacent to wetlands. DWR recommends installation of a gauge at station 22+00 on R4 on stream left. If the crossing is not removed, DWR will want a plan on how the designer will maintain no net loss of wetlands on site. Response: There is an existing ford stream crossing at approximate station 23+50 that has been heavily impacted by cattle usage (See R4 site photos). WLS understands the concern for this proposed crossing location and rationale for installing a groundwater well for the purpose of monitoring potential impacts to wetland hydrology. We made every effort to omit this crossing and easement break, however the adjoining landowners would not be able to access the property on either side given the existing wetland areas (R4a and R4b) and steep hillslopes along R4 stream left. Therefore, WLS is reconstructing the existing crossing in the same location with a properly sized pipe culvert with embedded substrate that conveys the design discharges and provides adequate fish passage. We expect the restoration activities and proposed approaches to improve overall wetland hydrology and function as compared to the current conditions. Since the existing stream bed elevation will be raised to promote overbank flows and groundwater recharge, we do not expect to negatively affect wetland hydrology in this area. As such, we will install one (1) automated groundwater well within the wetland/left floodplain area along R4 to document groundwater hydrology. Any expected permanent impacts to existing wetlands due to the culvert crossing installation will be documented in the PCN permit application. 11. Looking at the photos of reach R4a, particularly at the downstream reach and its confluence with R4, there does not appear to be a need for any channel construction. Please substantiate why channel construction is needed in this area. Response: Reaches R4/R5 are incised and will be raised to provide access to their historic floodplain and maximize functional uplift. As a result of this restoration approach, WLS needed to raise the existing stream bed along oversized channel portions of R4a (and R4b) to avoid a backwater condition and to restore the natural connection between Reaches R4/R5. Kim Browning, USACE: 1. R2 and R3 have very small watersheds, concern about maintaining flow and jurisdiction. Recommend camera points and flow gauges here. Response: As described in DWR response comment #9, WLS understands this concern and will install a camera facing upstream at the confluence of R2/R3 and a flow gauge to document surface flow conditions during the monitoring period as described in Sections 7 and 8 of the mitigation plan. 2. Design Sheet 10: It appears that there are three BMPs within the easement. Please ensure that these features are not in the jurisdictional areas as it is unclear on the maps and design sheets, and that their short-term maintenance is discussed in the text, if any is necessary. Response: As discussed during the IRT post contract site visit and meeting minutes, the water quality improvement features are located above the streams jurisdictional determination (origin points) and are designed to be self-maintaining, therefore should not require annual maintenance as cattle are excluded and buffer vegetation becomes established. Please refer to Appendix 9 WOTUS information for the USACE PJD correspondence, including stream and wetland location/origination maps. 3. Even though there are no wetland credits being sought, and existing wetlands are fairly small, the restoration of reach R4 appears to run through WD. Please ensure that permanent impacts to these wetlands during construction do not result in loss of functio n, though it is anticipated that overall wetland function will improve from increased hydrology in this area. It’s recommended that a temporary veg plot be placed in this area. Response: As described in DWR comment response #10, WLS understands the concern for the proposed crossing and relocating the design channel through the existing wetland area (wetland area ‘WD’ as shown on the PJD Figure 3). However, we have tried to avoid and minimize the permanent wetland impacts as much as possible (~0.04 ac) and expect the stream restoration activities to improve overall wetland functions as compared to the current conditions. A proposed vegetation plot is shown along R4 (see Figure 9) in this area along the right floodplain which can be easily adjusted as requested by the USACE. The existing wetland vegetation in this WD area is highly impacted from cattle trampling and mostly limited to the herbaceous stratum. Since the existing stream bed elevation will be raised to promote overbank flows and groundwater recharge, we do not expect to negatively affect overall wetland hydrology. As such, we will install one (1) automated groundwater well within the wetland/left floodplain area along R4 to document groundwater hydrology. Any expected permanent impacts to existing wetlands due to the culvert crossing installation will be documented in the PCN permit application. 4. It would be helpful to depict photo points on Figure 9. Response: We have added existing conditions photo points on Figure 6 to correspond with the site photographs located in Appendix 2. Post-restoration photo point will be included with the MY0 Baseline Report - Current Conditions Plan View (CCPV) map to document and quantify the visual assessment throughout the monitoring period. 5. Section 4.1.2 Functional Uplift Potential and Table 11 : The functional pyramid is cited to show existing conditions for each category, and was used to describe the functional uplift potential of the project, which is appreciated. Please note that the functional pyramid and SQT tool have not been approved for use by the IRT in determining success for mitigation projects. It would be interesting to see the correlation of the NCSAM assessment compared to the SQT throughout the project. Furthermore, three of the reaches are already scored as FAR and the proposed c ondition is also FAR. Please justify the functional uplift if the conditions are not changing. Response: WLS appreciates USACE’s comment regarding our use of the stream quantification tool (SQT) to consider functional lift for the project. Although there are similarities between the NC SAM and the SQT assessment methods and functional summaries (i.e. LOW~NF, MEDIUM~FAR, HIGH~F), NC SAM and the SQT methods were not originally developed for determining mitigation success and credit calculations on constructed stream sites. While we understand the SQT has not yet been approved by the USACE for determining credit, the SQT requires a more robust data collection and analysis effort in order will help determine the highest level of restoration potential and associated lift that can be achieved for the project, considering site constraints and existing conditions. We agree with the concern and understand the limitations of using the SQT, especially in catchments with a Curve Number greater than 56 or shorter reach segments that do not increase restored length and predict a nominal functional lift (i.e. Existing FAR vs Proposed FAR). Based on our use and understanding of the functional lift scoring summary (%), we do expect a functional lift in these reaches (R3, 58%, R4 64%, R5, 116%) even though the score output is still FAR. As a comparison, NC SAM predicts these reaches will be scored ‘HIGH’ in the restored condition. WLS has verified the SQT inputs and outputs are correct as shown in the table. 6. Table 12 and Table 23: Hydraulics, the BHR goal should read not to exceed 1.2. Response: Revised Table 12 and Table 23 language to state BHRs should not exceed 1.2. 7. Page 41, last paragraph and Table 21: please ensure that red maple are not included in the plant ing plan. Response: Removed Red maple from Table 21 and the proposed planting plan on sheet 16 and substituted with Northern red oak and Blackgum. It should be noted WLS has implemented numerous successful riparian buffer planting strategies, which has included Red maple, as we believe it provides a functional benefit to natural riparian buffers. However, we understand its distribution is abundant and that the species can propagate aggressively. 8. Section 7.1: Stream Hydrology—“In addition to the two bankfull flow events, two…” is confusing. It should read four bankfull events. Response: Revised language in Section 7.1 stream hydrology stating ‘four (4) separate bankfull events must be documented within the seven-year monitoring period. Two of the four bankfull events must occur in separate years.’ To avoid confusion and remain consistent with 2016 USACE guidance, we omitted language ‘In addition to the two bankfull flow events, two “geomorphically significant” flow events (Qgs=0.66Q2) must also be documented during the monitoring period.’ a. Jurisdictional Stream Flow: Please add a statement that intermittent streams should be added requiring at least 30-days consecutive flow within a calendar year. Response: Revised language in Section 7.1, jurisdictional stream flow, stating any streams classified as intermittent must exhibit base flow for at least 30-days consecutive flow within a calendar year under normal rainfall conditions. b. Stream Profiles: The ER should be no less than 1.4 for B type channels. Response: Revised language in Section 7.1, stream profiles, vertical stability, and floodplain access, stating ERs shall be no less than 2.2 (1.4 for Rosgen ‘B’ stream types) to be consistent with and Table 23, Level 2 Performance Standards. c. Stream Horizontal Stability: It would be beneficial to have a specific measurement parameter, for example, BHR and ER at any measured riffle cross -section should not change by more than 10% from the baseline condition during any given monitoring interval. Response: Per 2016 USACE guidance, added language in Section 7.1, stream horizontal stability ‘In general, BHR and ER at any measured riffle cross-section should not change by more than 10% from the baseline condition during any given monitoring interval’. 9. Section 7.3: Please include a vigor standard for vegetation of 7 feet high in year five and 10 feet high in year 7. Response: Per 2016 USACE guidance, added language stating trees in each veg plot must average 6 feet in height at MY5 and 8 feet in height at MY7 since Surry county is considered a mountain county. 10. Did I miss the section on site constraints or potential risks? Response: WLS added section 3.5 to the mitigation plan to document project site constraints and potential risks. 11. Buffer Widths: Portions of R1, R2, and R5 do not meet the minimum buffer width of 30 ft. This is approximately 11% of the total restored length, which exceeds the guidance allowing no more than 5% of the total project length. Would the 11% change if you calculated the total project length, verses only using the restored length? If the result is still over 5%, the buffer tool needs to be used. If the Buffer Tool is used, please clearly show the loss or addition of credits in the Table 1 a nd 14. a. The Buffer calculation table in the appendix, Table 1 and Table 14 all appear to have different credit totals. Please clarify. Response: As described in the DMS Final Draft response comments, WLS has made every effort to acquire the necessary easement areas to meet or exceed the minimum buffer width requirements. However, some areas along Reaches R1, R2 and R5 do not meet the minimum 30’ bu ffer requirement. This was due in part to of lack of landowner involvement or where the constraints by ROWs resulted in acute angles in the easement. The total length affected for the entire project is approximately 600 LF which is approximately 11% of the total restored project length. Per the guidance in the Wilmington District Stream and Wetland Compensatory Mitigation Update, North Carolina Interagency Review Team (USACE, 2016) under Section XI. Stream Buffers, heading A. Required Minimum Buffer Widths, subheading 5: Where streams intersect with project boundaries (e.g., property lines, farm crossings, utility easements, etc.), it was not possible for buffers to meet the minimum standard width all the way to the end of the channel where the intersection occurs at an acute angle. WLS used the DMS buffer calculation tool and USACE-Wilmington District Stream Buffer Credit Calculator to help tabulate stream credit gains/losses. WLS is proposing 5,389 stream mitigation credits for the affected project reaches. The net change after buffer adjustments is approximately +25 stream credits as shown on Figures 11a and 11b and in the Wilmington District Stream Buffer Calculator output in Appendix 2. Many buffer widths greatly exceed the 30-foot minimum which includes the water quality treatment features within the easement boundary. WLS updated Tables 1 and 14 to include the buffer tool calculations as requested and included additional notes to clarify the buffer tool and stream mitigation credit calculations and adjustments as described further in Section 6.1. Please contact me if you have any additional questions or comments. Sincerely, Water & Land Solutions, LLC Kayne M. Van Stell Vice President, Ecosystem Design Services Water and Land Solutions, LLC 7721 Six Forks Road, Suite 130 Raleigh, NC 27615 Office Phone: (919) 614-5111 Mobile Phone: (919) 818-8481 Email: kayne@waterlandsolutions.com Table of Contents 1 Project Introduction .............................................................................................................................. 1 2 Watershed Approach and Site Selection .............................................................................................. 2 3 Baseline Information and Existing Conditions Assessment .................................................................. 3 3.1 Watershed Processes and Resource Conditions ........................................................................... 5 3.1.1 Watershed Overview ............................................................................................................ 5 3.1.2 Surface Water Classification ................................................................................................. 5 3.1.3 Aquatic Resource Health and Function ................................................................................. 5 3.1.4 Benthic Macroinvertebrates and Aquatic Habitat ................................................................ 5 3.1.5 Pollutant Load Considerations .............................................................................................. 6 3.2 Landscape Characteristics and Regional Controls ........................................................................ 8 3.2.1 Physiography and Geology .................................................................................................... 8 3.2.2 Soils ....................................................................................................................................... 8 3.2.3 Climate .................................................................................................................................. 9 3.2.4 Existing Vegetation ............................................................................................................. 11 3.3 Land Use and Development Trends ............................................................................................ 12 3.4 Watershed Disturbance and Response ....................................................................................... 13 3.4.1 Existing Reach Condition Summary .................................................................................... 13 3.4.2 Channel Morphology and Stability Assessment.................................................................. 17 3.4.3 Channel Evolution ............................................................................................................... 19 3.4.4 Sediment Supply, Delivery and Storage .............................................................................. 19 3.4.5 Jurisdictional WOTUS .......................................................................................................... 20 3.5 Potential Site Constraints ............................................................................................................ 21 3.5.1 Existing Easements and Right-Of-Ways on the Site ............................................................ 21 3.5.2 Utility Corridors within the Site .......................................................................................... 21 3.5.3 Mineral or Water Rights Assurance .................................................................................... 21 3.5.4 Hydrologic Trespass ............................................................................................................ 21 3.5.5 Invasive Species Vegetation ................................................................................................ 21 4 Functional Uplift Potential .................................................................................................................. 21 4.1.1 Function-Based Parameters and Measurement Methods.................................................. 22 4.1.2 Performance Standards and Functional Capacity ............................................................... 22 4.1.3 Restoration Potential .......................................................................................................... 23 5 Mitigation Project Goals and Objectives............................................................................................. 24 5.1.1 Project Benefits Summary ................................................................................................... 25 6 Design Approach and Mitigation Work Plan ....................................................................................... 27 6.1 Stream Mitigation Credit Adjustments ....................................................................................... 28 6.2 Stream Design Approach ............................................................................................................ 29 6.2.1 Proposed Design Parameters .............................................................................................. 30 6.2.2 Design Reach Summary ....................................................................................................... 31 6.3 Reference Reach Selection.......................................................................................................... 35 6.4 Flow Regime ................................................................................................................................ 36 6.4.1 Bankfull Stage and Discharge .............................................................................................. 37 6.4.2 Regional Curve Comparison ................................................................................................ 38 6.4.3 Channel Forming Discharge ................................................................................................ 39 6.4.4 Channel Stability and Sediment Transport Analysis ........................................................... 40 6.5 Wetland Design Approach .......................................................................................................... 42 6.6 Riparian Buffer Design Approach ................................................................................................ 42 6.6.1 Proposed Vegetation Planting ............................................................................................ 43 6.6.2 Planting Materials and Methods ......................................................................................... 44 6.7 Agricultural Best Management Practices .................................................................................... 46 6.8 Water Quality Treatment Features ............................................................................................. 47 6.9 Site Construction Methods ......................................................................................................... 47 6.9.1 Site Grading and Construction Elements ............................................................................ 47 6.9.2 In-stream Structures and Site Improvement Features ....................................................... 48 6.9.3 Construction Feasibility ....................................................................................................... 48 7 Performance Standards ...................................................................................................................... 49 7.1 Streams ....................................................................................................................................... 49 7.2 Wetlands ..................................................................................................................................... 50 7.3 Vegetation ................................................................................................................................... 50 8 Monitoring Plan .................................................................................................................................. 50 8.1 Visual Assessment Monitoring .................................................................................................... 51 8.2 Stream Assessment Monitoring .................................................................................................. 51 8.2.1 Hydrologic Monitoring ........................................................................................................ 52 8.2.2 Geomorphic Monitoring ..................................................................................................... 52 8.2.3 Flow Duration Monitoring................................................................................................... 54 8.3 Wetland Monitoring ................................................................................................................... 54 8.4 Vegetation Monitoring ................................................................................................................ 54 9 Adaptive Management Plan ............................................................................................................... 57 10 Long-Term Management Plan ............................................................................................................ 57 11 References .......................................................................................................................................... 58 Tables Table 1. Project Asset Summary ................................................................................................................... 1 Table 2. Project Attribute Data and Baseline Summary Information ........................................................... 3 Table 3. Total Annual Pollutant Loadings and Removal Estimates from EPA Region 5 Model..................... 6 Table 4. BANCS Reach Assessment ............................................................................................................... 7 Table 5. Pollutant Load Reduction Estimates from Livestock Exclusion and Riparian Buffers ..................... 7 Table 6. Project Soil Type and Descriptions .................................................................................................. 9 Table 7. Comparison of Monthly Rainfall Amounts vs. Long-term Averages ............................................. 10 Table 8. Existing Site Vegetation ................................................................................................................. 11 Table 9. Existing Channel Morphology Summary ....................................................................................... 18 Table 10. Existing and Proposed Functional Condition Assessment Summary .......................................... 22 Table 11. Functional Lift Scoring Summary ................................................................................................. 23 Table 12. Function-Based Goals and Design Objectives Summary ............................................................. 25 Table 13. Project Benefits Summary ........................................................................................................... 26 Table 14. Mitigation Components and Proposed Credit Summary ............................................................ 28 Table 15. Proposed Design Parameters ...................................................................................................... 30 Table 16. Reference Reach Data Comparison ............................................................................................. 36 Table 17. Flow Level and Ecological Role .................................................................................................... 37 Table 18. North Carolina Rural Piedmont Regional Curve Equations ......................................................... 38 Table 19. Design Discharge Analysis Summary ........................................................................................... 40 Table 20. Boundary Shear Stress and Stream Power .................................................................................. 41 Table 21. Proposed Riparian Buffer Bare Root and Live Stake Plantings ................................................... 44 Table 22. Proposed Riparian Buffer Permanent Seeding............................................................................ 46 Table 23. Proposed Monitoring Plan Summary .......................................................................................... 56 Figures Figure 1...................................................................................................................................... . Vicinity Map Figure 2........................................................................................................................ Existing Geology Map Figure 3.................................................................................................................... . USGS Topographic Map Figure 4................................................................................................................................. . NRCS Soils Map Figure 5......................................................................................................................................... LiDAR Map Figure 6.................................................................................................................... Current Conditions Map Figure 7a, 7b, 7c, 7d, 7e.................................................................................................. Historic Aerial Map Figure 8....................................................................................................................... FEMA Floodplain Map Figure 9..................................................................Proposed Mitigation Assets & Monitoring Features Map Figure 10....................................................................................................... Reference Reach Location Map Figure 11a & 11b................................................................................................................Buffer Width Map Appendices Appendix 1................................................................................................................................... Plan Sheets Appendix 2.......................................................................... . Site Analysis Data/Supplementary Information Appendix 3.......................................................................................................... . Site Protection Instrument Appendix 4............................................................................................................... Credit Release Schedule Appendix 5...................................................................................................................... Financial Assurance Appendix 6........................................................................................................................ Maintenance Plan Appendix 7................................................................................................ DWR Stream Identification Forms Appendix 8............................................................................... . USACE District Assessment Methods/Forms Appendix 9......................................................................................................................WOTUS Information Appendix 10.................................................................................................................. Invasive Species Plan Appendix 11............................................................................ . Approved FHWA Categorical Exclusion Form Appendix 12............................................................................................................. Agency Correspondence Water & Land Solutions Horne Creek Tributaries Mitigation Project Page 1 DMS Project #100026 1 Project Introduction The Horne Creek Tributaries Mitigation Project (“Project”) is a North Carolina Department of Environmental Quality (NCDEQ), Division of Mitigation Services (DMS) full-delivery stream mitigation project, contracted with Water & Land Solutions, LLC (WLS), on June 01, 2017 in response to RFP 16- 006993. The Project will provide stream mitigation credits in the Yadkin River Basin (Cataloging Unit 03040101). The Project is located in Surry County approximately seven miles southwest of the Town of Pilot Mountain at 36.2851950° North and -80.5032100° West. The project site is in NCDEQ Sub- basin 03-07-02, in the 8-digit Hydrologic Unit (HU) 03040101, in the Ararat River & Upper Yadkin River Local Watershed Plan Study Area (Local Watershed Plan ID: LWP-2008-51), and in the Targeted Local Watershed 03040101110070 (Warm Water Thermal Regime), all within the Yadkin River Basin (Figure 1). The P roject will involve the restoration, enhancement, and permanent protection of seven stream reaches (R1, R2, R3, R4, R4a, R4b, and R5) and their riparian buffers, totaling approximately 5,681 linear feet of existing streams. In addition, combinations of different practices or measures will include riparian wetland enhancement and various agricultural best management practices (BMPs). The Project will provide significant ecological improvements and functional uplift through stream and aquatic habitat restoration, and through decreasing nutrient and sediment loads within the watershed. See Section 5 for a detailed benefits summary and Table 1 for a summary of project assets. Figure 9 illustrates the project mitigation components. Table 1. Project Asset Summary Project Component Type of Mitigation (Priority Level) Creditable Units Mitigation Ratio Stream Mitigation Credits (SMCs) R1 Stream Restoration (PI) 1,320 LF 1:1 1,320 R2 Stream Restoration (PI) 296 LF 1:1 296 R3 Stream Restoration (PI) 76 LF 1:1 76 R4 Stream Restoration (PI) 1,167 LF 1:1 1,167 R4a Stream Restoration (PI) 111 LF 1:1 111 R4a Stream Enhancement Level II 57 LF 2.5:1 23 R4b Stream Restoration (PI) 125 1:1 125 R4b Stream Enhancement Level II 27 LF 2.5:1 11 R5 Stream Restoration (PI) 2,249 LF 1:1 2,249 Totals 5,428 5,378 Credit Loss in Required Buffer -300 Credit Gain for Additional Buffer 325 Net Change in Credit from Buffers +25 Total Credits per Buffer Calculator 5,403 Total Adjusted SMCs 5,389 Note 1: No mitigation credits were calculated outside the conservation easement boundaries. Note 2: The Wilmington District Stream Buffer Calculator was used to determine credit losses/gains due to 11% of the total project lengths buffer widths being less than 30’. Based on the stream buffer credit calculator the total net increase in stream credits is 25 credits. This is due in part to many areas within the buffer being greater than 30’. WLS is proposing the adjusted SMCs totaling 5,389 credits. Note 3: Values in table were rounded to the nearest whole number. Water & Land Solutions Horne Creek Tributaries Mitigation Project Page 2 DMS Project #100026 The project streams are all unnamed headwater tributaries to Horne Creek. Horne Creek flows southeast to its confluence with the Yadkin River at Pilot Mountain State Park. Horne Creek is listed by the NCDEQ Division of Water Resources as ‘WS-IV’ (Water Supply IV) waters from its source all the way downstream to its confluence with the Yadkin River. The project site is located in the Northern Inner Piedmont (‘45e’) US Environmental Protection Agency Level IV Ecoregion and the North Carolina Piedmont Physiographic Province (Omernik, 2014). The site involves a series of direct headwater tributaries to Horne Creek, which will provide maximum ecological uplift due to our comprehensive watershed approach. 2 Watershed Approach and Site Selection In an effort to update its watershed planning process, DMS amended the 2003 Upper Yadkin Pee-Dee RBRP in 2009 (Yadkin 01 RBRP, 2009). In 2003, 54 hydrologic units were targeted in the Yadkin-Pee Dee River Basin Watershed Restoration Plan. In the 2009, an additional 37 HUCs were newly identified as Targeted Local Watersheds, and two HUCs had their TLW status removed. In total, 89 HUCs are highlighted as TLWs by DMS in the 2009 RBRP. The purpose of the 2009 RBRP is to identify and prioritize potential mitigation strategies to reduce sediment inputs, restore/enhance aquatic resources, improving riparian corridors, promoting agronomic farm management techniques, and coordinating with landowners and local government agencies the Yadkin 01 basin. The recommendations include traditional stream and wetland mitigation, buffer restoration, nutrient offsets, non-traditional mitigation projects such as stormwater and agricultural BMPs (Yadkin 01 RBRP, 2009). The project is situated in the northern inner Piedmont in the southern portion of the Yadkin River Basin, where the NC Wildlife Resources Commission (NCWRC) considers this a priority area for conservation measures and aquatic habitat for freshwater mussel species. USGS 2011 National Land Cover Data (NLCD) GIS Datasets and StreamStats was used to estimate the impervious cover and dominant land use information for the project catchment area. Currently, the catchment area has an impervious cover estimated to be less than one percent and the dominant land uses are pasture lands (predominantly for hay and cattle), row-crop agriculture, and mixed forest. The project will extend the wildlife corridor and protect diverse aquatic and terrestrial habitat in the area through a permanent conservation easement, ahead of anticipated development. As cited in the Yadkin 01 RBRP, the Project site was selected to provide a unique opportunity for implementing a combination of different practices or measures, as part of a comprehensive watershed approach to improve and protect aquatic resource functions, as outlined in the DMS Compensation Planning Framework (CPF) and the Federal Mitigation Rule (USACE, 2008). Developing specific goals and objectives that directly relate to functional improvement is a critical path for implementing a successful restoration project. The expected functional uplift is discussed further and in more detail under Section 4, and project goals and objectives are further described and discussed under Section 5. Water & Land Solutions Horne Creek Tributaries Mitigation Project Page 3 DMS Project #100026 3 Baseline Information and Existing Conditions Assessment WLS performed an existing conditions assessment for the Project by compiling and analyzing baseline information, aerial photography, and field data. The purpose of this assessment was to determine how aquatic resource functions have been impacted within the catchment area. Watershed parameters such as drainage patterns, percent impervious cover, controlling vegetation and hydrology (rainfall/runoff relationships) were evaluated, along with the analysis of physiography, local geology, soils, topographic position (basin relief, landforms, valley morphology), and flow regime (discharge, precipitation, sediment supply). Combined with historical context, the processes of hydrology and geomorphology must be linked to evaluate current physical and biological conditions and system responses to human activities within the riparian ecosystem (Montgomery and Bolton, 2003). Identifying the hydrogeomorphic variability, site constraints, and cause-and-effect relationships plays a key role in determining the functional loss and maximizing potential uplift (Harman et al., 2012). The following sub-sections further describe the existing site conditions, degrees of impairment, and primary controls that were considered for developing an appropriate restoration design approach. Table 2 represents the project attribute data and baseline summary information. Table 2. Project Attribute Data and Baseline Summary Information Project Information Project Name Horne Creek Tributaries Mitigation Project County Surry Project Area (acres) 11.9 Project Coordinates (latitude and longitude) 36.2851950° N, -80.5032100° W Project Watershed Summary Information Physiographic Province Piedmont River Basin Yadkin USGS Hydrologic Unit 03040101110070 DWR Sub-basin 03-07-02 Project Drainage Area (acres) 166 (R5) and 38 (R1) Project Drainage Area Percentage of Impervious Area <1 CGIA Land Use Classification 2.01.03, 2.01.01, 3.02 (46% pasture/hay, 24% row crop, 16% mixed forest) Water & Land Solutions Horne Creek Tributaries Mitigation Project Page 4 DMS Project #100026 Reach Summary Information Parameters R1 R2 R3 R4 R4a R4b R5 Length of reach (linear feet) 1,397 286 75 1,191 124 89 2,519 Valley confinement (Confined, moderately confined, unconfined) moderately confined moderately confined moderately confined unconfined unconfined unconfined unconfined Drainage area (acres) 38 41 29 83 29 2 166 Perennial, Intermittent, Ephemeral Perennial Intermittent Intermittent Perennial Perennial/ Int1 Perennial/ Int1 Perennial NCDWR Water Quality Classification C C, WS-IV, C C, WS-IV, C C C, WS-IV, Stream Classification (existing) E5b/F5b (incised) G4 (incised) E6b(incised) B4 (incised) B4c (incised) G5 B4c/G4c (incised) Evolutionary trend (Simon) III/IV III III IV/V I I IV/V FEMA classification N/A N/A N/A N/A N/A N/A N/A Regulatory Considerations Parameters Applicable? Resolved? Supporting Docs? Water of the United States - Section 404 Yes Yes Categorical Exclusion Water of the United States - Section 401 Yes Yes Categorical Exclusion Endangered Species Act No N/A Categorical Exclusion Historic Preservation Act No N/A Categorical Exclusion Coastal Zone Management Act (CZMA or CAMA) No N/A N/A FEMA Floodplain Compliance No N/A N/A Essential Fisheries Habitat No N/A Categorical Exclusion Note 1: Indicates that the lower section of the reach was classified as perennial and upper stream reach was classified as intermittent. Water & Land Solutions Horne Creek Tributaries Mitigation Project Page 5 DMS Project #100026 3.1 Watershed Processes and Resource Conditions 3.1.1 Watershed Overview Spatial and temporal variability of hydrologic and geomorphic processes, as well as fine sediment have influenced the overall system response and stability trends in multiple reach segments across the Project site. Measurable changes in the landscape ecology were first identified upon review of aerial photography, including native buffer vegetation disturbance and/or removal and stream channel alteration. Evidence of these observed changes were documented throughout the watershed as increased channel widths/depths and bank height ratios, decreased riffle-pool frequency and bedform diversity, as well as limited floodplain connectivity and hyporheic zone interaction. Additionally, direct cattle access to the streams and surrounding agricultural fertilization has likely increased fecal coliform bacteria and nutrient levels within the watershed. These ecological impacts have negatively impacted historic stream and wetland functions at the site and have likely increased over the past few decades due to anthropogenic changes within catchment. 3.1.2 Surface Water Classification Horne Creek is classified as Water Supply IV (WS-IV) (Stream Index 12-75) “From source to Yadkin River”. WS-IV are waters used as sources of water supply for drinking, culinary, or food processing purposes where a WS-I, II, or III classification is not feasible. These waters are also protected for Class ‘C’ uses (Class ‘C’ waters are protected for secondary recreation, fishing, wildlife, fish and aquatic life propagation and survival, agriculture and other uses suitable for Class ‘C’). WS-IV waters are generally in moderately to highly developed watersheds or Protected Areas. 3.1.3 Aquatic Resource Health and Function WLS reviewed DWR biological and water quality data within the Upper Horne Creek watershed to identify any potential stressors near receiving waters. Currently, no DWR water quality monitoring stations, or benthic or fish monitoring stations exist in or near the project watershed. At this time, no known DWR monitoring sites are proposed for monitoring use by WLS for this project. It is generally accepted that nutrient loading and sedimentation from streambank erosion is a significant pollutant to water quality and aquatic habitat. However, there can be data uncertainties and excessive costs for monitoring nutrient levels and sediment delivery in streams (Hess, 2014). Without an extensive nutrient monitoring and management plan, types, application rates, groundwater leaching and lag times can vary considerably, making it difficult to effectively determine water quality improvements in response to various restoration practices. Additionally, measuring in situ sediments that deposit over time can often have longer transport times and legacy effects that can mask the water quality improvements and biologic functions related to common stream and wetland restoration activities (Bain, 2012). 3.1.4 Benthic Macroinvertebrates and Aquatic Habitat WLS evaluated benthic macroinvertebrate (BMI) communities and aquatic habitat at two locations (Site 1 along R1 and Site 2 along R5) within the proposed project area. The sample number and location where selected based on stream lengths, watershed position and headwater flow regime. Macroinvertebrates are useful biological monitors because they are found in all aquatic environments, are less mobile than many other groups of organisms, and easily collectable. BMI sampling was conducted on June 5, 2018 using Water & Land Solutions Horne Creek Tributaries Mitigation Project Page 6 DMS Project #100026 methods and procedures defined by DWR’s “Standard Operating Procedures for the Collection and Analysis of Benthic Macroinvertebrates” (NCDWR, 2016). Samples were collected by WLS staff and verified by Larry Eaton (Eaton Scientific, LS, Inc.). Sample Site 1 had a Biotic Index (BI) value of 6.53 resulting in a bioclassification rating of “Good-Fair”. Site 1 had a habitat assessment score of 74. Sample Site 2 had a BI value of 4.99 resulting in a bioclassification rating of “Good-Fair”. Site 2 had a habitat assessment score of 80. The BMI diversity was greater in Sample Site 2 with higher total taxa, EPT richness and abundance. Additional sampling will be conducted again in Spring/Summer during post-construction monitoring year 3. The pre-restoration BMI results and habitat assessment score summary is shown in Appendix 2. 3.1.5 Pollutant Load Considerations EPA Region 5 Model: WLS first utilized the United States Environmental Protection Agency (EPA) Region 5 Model to quantify how the project may reduce pollutant loads into Horne Creek and the Yadkin River Watershed. The Region 5 Model was developed for the EPA (Michigan Department of Environmental Quality, 1999) and is used throughout the United States to determine sediment and nutrient load reductions from the implementation of urban and agricultural BMPs, including, but not limited to, vegetated filter strips, wetland detention, and bank stabilization/stream restoration. Model inputs include eroded streambank length, streambank height, lateral recession rates, soil weight, and BMP type/efficiency applicable to the agricultural Piedmont area. The summary of total annual pollutant loadings and removal estimates are shown in Table 3 below. Table 3. Total Annual Pollutant Loadings and Removal Estimates from EPA Region 5 Model Although the EPA Region 5 model data is more empirically based, it is intended to be used as a basic planning tool. Inherently, there are certain assumptions and limitations that must be considered when refining model inputs and evaluating the results. For example, water quality calculations and sediment loading are highly dependent on actual BMP efficiencies, sophisticated algorithms, regression analysis, and not calibrated field measurements. BANCS Method: As a comparison to the EPA Region 5 model results for sediment loading, WLS predicted streambank erosion rates and annual sediment yields using the Bank Assessment for Non-point-source Consequences of Sediment (BANCS) method (Rosgen 1996, 2001a) which considers two streambank erodibility estimation tools: The Bank Erosion Hazard Index (BEHI) and Near Bank Stress (NBS). This rating method is used to describe existing streambank conditions (i.e., bank migration and lateral stability) and quantify the lateral erosion potential of a stream reach in feet per year. The components of the BANCS methodology can be subjective and vary based on the region’s climatic condition, geologic controls, and Project Watershed (ac) Existing Stream Length (ft) Length of Scoured Bank (ft) Sediment Load (ton/yr) Nitrogen Load (lb/yr) Phosphorus Load (lb/yr) Sediment Reduction w/ BMP (ton/yr, %) Nitrogen Reduction w/ BMP (lb/yr, %) Phosphorus Reduction w/ BMP (lb/yr, %) 166.4 5,681 8,014 586.1 402.9 806.0 474.2, 80.9% 205.1, 50.9% 432.0, 53.6% Note 1: Soil Texture Class is predominantly loam, sandy clay loam. Note 2: Average Bank heights in scour areas ranged 2 to 5 feet. Note 3: Lateral Recession Rates (ft/yr) ranged from slight category (0.01 to 0.05) to severe (0.06 to 0.40) Note 4: Agricultural BMP input used for streambank stabilization/restoration and cattle exclusion fencing. Water & Land Solutions Horne Creek Tributaries Mitigation Project Page 7 DMS Project #100026 the experience level and professional training of the observers. However, it is a repeatable estimation method and the intent is to be used as a relative comparison for pre- and post-restoration conditions. WLS used the unpublished NC Piedmont BEHI and NBS ratings curve (personal communication with NRCS, Walker, 2016) to estimate annual sediment loss based on local observations and streambank measurements taken on May 10th and 11th, 2018. The BEHI/NBS estimates for the existing conditions (pre- construction) predict that the project reaches contribute approximately 732.3 tons of sediment per year to the Yadkin River, which is 146.2 tons higher than the EPA Region 5 Model estimates. The BEHI ratings varied from ‘very low’ to ‘extreme’, with Reach R3 average BEHI rating ‘moderate/low’ based on minimal shear stress, stream bed/bank stability and controlling vegetation. The middle reaches and reach R1 contribute the majority of the bank sediment to the system, due to a lack of bank protection and hoof sheer from cattle which have access to these reaches. The average ‘moderate’ to ‘high’ BEHI ratings and observations are typical of a degraded stream system with active bank erosion. See Table 4 below and Appendix 2 for sediment loading assessment sheets. Table 4. BANCS Reach Assessment Project Component BEHI Range NBS Range Sediment Loading (tons/yr) R1 Very-Low/High Very Low/High 18.9 R2 Low/Moderate-High Very Low/Moderate 8.5 R3 Low/Very-High Low/High 11.9 R4/R5 Very-Low/Extreme Very-Low/Extreme 693.0 Note 1: R4a and R4b were not assessed due to their small size and minimal erosion potential. Note 2: R4 and R5 were combined due to the reach connection. Fecal Coliform Bacteria: Pollutant load reduction performance standards for nutrients and fecal coliform bacteria are not proposed nor required for this project, however, WLS is interested in evaluating how the proposed project could reduce pollutant loads into the Horne Creek Watershed. Based on DMS referenced studies represented in Quantifying Benefits to Water Quality from Livestock Exclusion and Riparian Buffer Establishment for Stream Restoration (DMS, 2016), WLS expects that implementation of this project could reduce Fecal Coliform Bacteria colonies (col), by as much as 80% as shown on Table 4. Table 5. Pollutant Load Reduction Estimates from Livestock Exclusion and Riparian Buffers Total Riparian Buffer Area (ac) 1 Cattle Exclusion: Grazing Pasture (ac) Nutrient Reduction: TN (lbs/yr) 2 Nutrient Reduction: TP (lbs/yr) 2 Fecal Coliform Bacteria from Direct Inputs (col) 3 Fecal Coliform Bacteria Reduction (col) 4 10.7 10.0 510.4 42.3 1.20E+12 2.35E+11 Note 1: Applicable for restored buffer widths ranging from 6m to 30m from the top of streambanks. Note 2: NC Division of Water Quality – Methodology and Calculation (1998) for determining nutrient reductions associated with Riparian Buffer Establishment (DWR, 1998). TN reduction (lbs/yr) = 51.04 (lbs/ac/yr) x Area (ac) and TP reduction (lbs/yr) = 4.23 (lbs/ac/yr) x Area (ac) Note 3: Fecal Coliform Reduction from Direct Cattle Input (colonies) = 2.2 x 10^11 (col/AU/day) x AU x 0.085 and assumes ~160 black beef cattle (ave. 400 lbs/each) Note 4: Fecal Coliform Reduction from Buffer Filtration (colonies) = Runoff’s fecal coliform concentration (col/gal) x Runoff volume (Gal) x 0.85 and assumes pastures are under continual grazing year-round (1.894*10^6), runoff curve number (CN) for Soil Group 'B' in pastureland is ~67 for a 1 inch - 24 hr storm event. Water & Land Solutions Horne Creek Tributaries Mitigation Project Page 8 DMS Project #100026 Based on existing condition assessments, findings indicate the overall stream health is considered ‘Poor’, which is consistent with model estimates and comparisons with numerous referenced studies. WLS expects that the implementation of this restoration project will significantly reduce pollutant loads, including sediment and nutrients, improving the overall aquatic functions and water quality in Upper Horne Creek. WLS will conduct pre- and post-restoration sampling to document improvements directly related to pollutant load reductions. WLS understands that such monitoring activities are not tied to performance standards nor required to demonstrate success for credit release. However, collecting and evaluating pollutant reduction data aligns with the goals and objectives of the project. We believe selecting applicable monitoring and evaluation methods will help develop a more function-based assessment and improve our project implementation process, thereby contributing positively to the advancement of the practice of ecosystem restoration. 3.2 Landscape Characteristics and Regional Controls 3.2.1 Physiography and Geology The project site is located within the Blue Ridge and Inner Piedmont Belts of the Northern Inner Piedmont physiographic province. The Blue Ridge and Inner Piedmont Belts are separated by the Brevard fault zone. More specifically, the geologic unit is classified as Metagraywacke and Muscovite-Biotite Schist (CZmg) formation interlayered and gradational with muscovite-biotite schist; minor marble and granite rock (Geologic Map of North Carolina, NC Geological Survey, 1998). The Northern Inner Piedmont province is generally characterized by higher elevations, more rugged topography, higher stream gradients and more mountain outliers than other areas of the Piedmont province (Griffith et al, 2002). The project area is within the Sauratown Mountain Anticlinorium and immediately south of the Pilot Mountain monadnock which represents a unique ecotonal transitional zone between Piedmont and Mountain Level III/IV Ecoregions that is characterized by prominent ridges and knobs that rise above 1,000 feet in elevation. 3.2.2 Soils Soils at the project site were initially determined using NRCS soil survey data for Surry County (NRCS Surry County Soil Survey, 2007). The soils within the project area were verified during on-site field investigations. Figure 4 illustrates soil conditions throughout the project area and the soil descriptions are provided below in Table 6. Water & Land Solutions Horne Creek Tributaries Mitigation Project Page 9 DMS Project #100026 Table 6. Project Soil Type and Descriptions Soil Name Hydric Description Braddock Fine (BbC) (0.3% of project area) No Well drained soils formed mainly on stream terraces and mountain valleys in the Piedmont region. Slope ranges from 8 to 15% on landscapes with moderate erosion and are not flooded. Fine sandy loam surface layer and clay subsoil or clay loam underlying material. Depth to bedrock is greater than 80 inches. Colvard and Suches (CsA) (43.6% of project area) No Well drained soils formed on flood plains and natural levees on flood plains. Typically, the surface layer is fine sandy loam (~10 inches) and subsoil is also fine sandy loam. Slopes range from 0 to 3% in the flood plains in the Piedmont and are occasionally flooded. Permeability, water capacity and shrink-swell are moderately high to high with low to very low surface runoff. Many areas are well suited for pasture and row crops given low runoff and erosion potential. Fairview (FeB2) (1.5% of project area) No Well drained soils formed mainly on ridges and interfluves in the Piedmont region. Slope ranges from 8 to 15% on landscapes with moderate erosion and are not flooded. Sandy clay loam surface layer and clay subsoil or clay loam underlying material. Depth to bedrock is greater than 80 inches. Fairview (FeC2) (8.3% of project area) No Well drained soils formed mainly on ridges and interfluves in the Piedmont region. Slope ranges from 2 to 8% on landscapes with moderate erosion and are not flooded. Sandy clay loam surface layer and clay subsoil or clay loam underlying material. Depth to bedrock is greater than 80 inches. Fairview (FeD2) (45.8% of project area) No Well drained soils formed mainly on ridges and interfluves in the Piedmont Region. Slope ranges from 15 to 25% on landscapes with moderate erosion and are not flooded. Sandy clay loam surface layer and clay subsoil or loam underlying material. Depth to bedrock is greater than 70 inches. The soils within the floodplain and riparian areas are predominantly mapped Colvard and Suches (CsA) and Fairview (FeD2). The soil properties have been degraded by historic agricultural and silvicultural activities and more recent cattle disturbances (i.e., hoof trampling) have resulted in a significant loss of surface/groundwater interaction, and increased streambank erosion and sedimentation. In the flatter valley sections along R5, it is common to discover legacy sediment in numerous floodplains in the mid- Atlantic Piedmont (Jacobson and Coleman, 1986). In this setting and context, legacy sediment can be defined as alluvium that was deposited following human disturbances in a watershed that represent episodic erosion in response to the colonization of land by European settlers (James, 2013). Interest in legacy sediment and its ecological implications have grown in recent years, as we understand how these deposits influence lateral channel connectivity, sediment budgets, water quality, and appropriateness of geomorphic restoration practices. 3.2.3 Climate The Project site is located in Surry County, NC and has a warm moderately humid climate with hot summers, minimal snowfall and no dry season (NRCS, 2007). The average growing season for the Project site is 174 days, beginning on April 24th and ending October 16th (NRCS Surry County Soil Survey, Weather Station: Mt. Airy, NC). The average annual precipitation in the Project area is approximately 47.43 inches Water & Land Solutions Horne Creek Tributaries Mitigation Project Page 10 DMS Project #100026 with a consistent monthly distribution, except for convective storm events or hurricanes that occur during the summer and fall months. In late 2017/2018, the area received over 60.75 inches as shown on WETS Table 7. Over the past 48 months, the Surry County Airport Weather Station (KMWK) has recorded over 185.22 inches of rain. Table 7. Comparison of Monthly Rainfall Amounts vs. Long-term Averages Month-Year Observed Monthly Precipitation (in) WETS Average Monthly Precipitation (in) Deviation of Observed from Average (in) Nov-17 5.89 1.12 +4.77 Dec-17 6.76 4.04 +2.72 Jan-18 9.8 4.76 +5.04 Feb-18 15.8 2.67 +13.13 Mar-18 N/A 4.69 N/A Apr-18 N/A 6.08 N/A May-18 0.43 6.37 -5.94 Jun-18 4.29 7.21 -2.92 Jul-18 3.84 11.03 -7.19 Aug-18 2.67 6.07 -3.4 Sep-18 5.23 7.96 -2.73 Oct-18 6.04 0.44 +5.6 Sum 60.75 62.44 +108.41 Throughout much of the southeastern US, average rainfall often exceeds average evapotranspiration (ET) losses and areas experience a moisture excess during normal years, which is typical of the Project site. Excess water leaves the Project site by groundwater flow, surface runoff, channelized surface flow, or seepage. Annual losses due to seepage, or percolation of water are not considered a significant loss pathway for excess water. However, groundwater flow and the hyporheic exchange is critical in small headwater stream and wetland systems like those at the Project site, as most excess water is lost via surface and shallow subsurface flow. The Project streams’ drainage density relative to the geomorphic/geologic character and hydrologic regime is common given the seasonal rainfall patterns, runoff rates, topographic relief, groundwater recharge, and infiltration capacity/depth to impermeable bedrock layer. Further observations of perennial flow frequency, response time to storm events, streambank erosion and groundwater saturation over the past year support this conclusion. Water & Land Solutions Horne Creek Tributaries Mitigation Project Page 11 DMS Project #100026 3.2.4 Existing Vegetation Historic land management surrounding the Project area has been primarily for agricultural and silvicultural purposes. Prior to anthropogenic land disturbances, the riparian vegetation community likely consisted of Mesic Mixed Forest (Piedmont Subtype) in the uplands with Alluvial Forest and Piedmont Bottomland Forest in the lower areas and floodplains (Schafale and Weakley, 1990). The existing vegetation within the project area consists of successional forest, pasture, and agricultural fields. Many of the riparian and upland areas have a narrow tree canopy and lack understory vegetation due to heavy livestock use and grazing. Widespread channel degradation is likely a result of the alteration of natural drainage patterns and the significant removal of native species vegetation. Table 8. Existing Site Vegetation Common Name Scientific Name Canopy Vegetation Red maple Acer rubrum Yellow-poplar Liriodendron tulipifera River birch Betula nigra American sycamore Plantanus occidentalis Swamp white oak Quercus bicolor White oak Quercus alba Understory & Woody Shrubs Black willow Salix nigra Silky willow Salix sericea Ironwood Carpinus caroliniana Umbrella magnolia Magnolia tripetala American holly Ilex opaca Hazel alder Alnus serrulata Elderberry Sambucus canadensis Eastern red cedar Juniperus virginiana Chinese privet Ligustrum sinense Persimmon Diospyros virginiana Herbaceous & Vines Poison ivy Toxicodendron radicans Virginia creeper Parthenocissus quinquefolia Joe pye weed Eutrochium maculatum Dog fennel Eupatorium capillifolium Jewelweed Impatiens capensis Blue-eyed grass Sisyrinchium angustifolium Greenbrier Smilax rotundifolia Multiflora rose Rosa multiflora Christmas fern Polystichum acrostichoides Lady fern Athyrium filix-femina Fescue Fescue sp. Soft rush Juncus effusus Water & Land Solutions Horne Creek Tributaries Mitigation Project Page 12 DMS Project #100026 Agricultural Fields and Pasture Areas: Currently, the majority of pasture areas are used for cattle grazing and the vegetation within open fields and pasture areas is primarily comprised of fescues, clovers, and some dog fennel (Eupatorium capillifolium). In smaller wooded riparian areas or clusters within the pastures and fields, the canopy is dominated by red maple (Acer rubrum), yellow-poplar (Liridendron tulipifera), and understory species consist of Eastern red cedar (Juniperus virginiana), umbrella magnolia (Magnolia tripelata). Woody shrub and vine species include Chinese privet (Ligustrum sinense) and greenbrier (Smilax rotundifolia). Herbaceous species consist of dog fennel (Eupatorium capillifolium) and soft rush (Juncus effusus). Mixed Hardwood Forest: The mature canopy is dominated by American beech (Fagus grandifolia), hickory (Carya spp.), American sycamore (Platanus occidentalus), red maple, but also includes white oak (Quercus alba), yellow-poplar, black willow (Salix nigra), and river birch (Betula nigra). Woody shrub and vine species include poison ivy (Toxicodendron radicans), greenbrier, and hazel alder (Alnus serrulata). Herbaceous species include jewelweed (Woodwardia areolata) and common juncus (Juncus effusus). Invasive Species Vegetation: The invasive species vegetation present on the Project site are primarily multiflora rose (Rosa multiflora) and Chinese privet (Ligustrum sinense). 3.3 Land Use and Development Trends The USGS 2011 National Land Cover Data GIS Dataset and StreamStats was used to estimate the current impervious cover and land use information for the project catchment area. The 647-acre catchment area has an impervious cover approximately one percent and the dominant land uses are 46% pasture/hay, 24% row crops, and 16% mixed forest. WLS conducted extensive field reconnaissance to verify the current land use practices within the catchment, which include active agricultural land managed as pasture for cattle grazing, hay/crop production and forested areas along reaches R1, R2, R3, R4, R4a, R4b, and R5. Prior to the 1940s, most of the watershed was a mixture of forested area and agricultural fields as illustrated on historic aerials (See Figure 7a). WLS was unable to obtain land use information prior to the 1930s. By the late 1970s, much of the headwater area remained a mixture of forest and agricultural fields, but an increase in agricultural production was evidenced. Over time the natural stream and wetland processes and aquatic resource functions have been significantly impacted because of these historic anthropogenic disturbances. As a design consideration, WLS coordinated with the landowner to extend the easement boundary to capture additional wetland areas and natural drainage features within the Project corridor. Increasing the Project footprint will provide wider riparian buffers and allow the implementation of agricultural best management practices, which ultimately improve floodplain functions and pollutant removal effectiveness. Water & Land Solutions Horne Creek Tributaries Mitigation Project Page 13 DMS Project #100026 3.4 Watershed Disturbance and Response To determine what actions are needed to restore the riparian corridor structure and lift ecological functions, it is critical to examine the rates and type of disturbances, and how the system responds to those disturbances. Across the Project site, landowners historically cleared large portions of mature forest and manipulated, and/or straightened streams and ditched riparian wetland systems to provide areas for crop production and cattle grazing. These activities have caused changes to historic channel patterns, sediment transport, in-stream habitat and restriction of fish movement, thermal regulation, and dissolved oxygen (DO) content. Cleared portions of the riparian buffer area are shown on historical aerial photographs (See Figures 7a, 7b, 7c, 7d, and 7e). A majority of the Project reaches has been heavily impacted from these historic and current land use practices, including livestock production, agriculture, and silviculture. Within the Project area, approximately 90% of the streambanks have inadequate (less than 30 feet wide) riparian buffers. Figure 9 represents the most recent aerial photography with clearly narrow and/or absent riparian buffers throughout much of the project area. Continuous livestock intrusion and associated hoof shear have severely impacted the streambanks along the Project stream reaches. The stream channels are actively incising, and the floodplain connection has been lost in many locations. The lack of adequate and high-quality buffer vegetation, past land use disturbances, active channel degradation, minimal impervious cover, and current agricultural and livestock practices present a significant opportunity for water quality and ecosystem improvements through the implementation of this project. 3.4.1 Existing Reach Condition Summary The streams at the Project site were categorized into seven reaches (R1, R2, R3, R4, R4a, R4b, and R5) totaling approximately 5,681 linear feet of existing streams. Reach breaks were based on drainage area at confluences, changes in existing condition, restoration/enhancement approaches, and/or changes in intermittent/perennial stream status. Field evaluations conducted by WLS at the proposal stage and during existing conditions assessments determined that Project reaches R1, R4, and R5 are perennial streams R2, and R3 were determined to be intermittent streams, and R4a and R4b were determined to be perennial/intermittent streams. Determinations were based on NCDWQ’s Methodology for Identification of Intermittent and Perennial Streams and Their Origins, (NCDWQ v4.11, Effective Date: September 1, 2010) stream assessment protocols. Copies of the referenced DWR Stream Identification Forms are included in Appendix 7 and reach condition summaries are provided below. R1 is a small perennial headwater tributary that extends from the upstream western boundary of the project site. R1 has a stream length of approximately 1,397 feet, average valley slope of 3.2 percent, and drainage area of 38 acres. The reach originates at a stream crossing that has prevented further headcut migration. Based on field observations, depositional patterns and headwater location, sediment supply appears to be limited to finer grained material mostly from bed/bank materials. Water & Land Solutions Horne Creek Tributaries Mitigation Project Page 14 DMS Project #100026 The channel is severely incised in most locations. Cattle intrusion has degraded the riparian and aquatic habitat and many areas has resulted is poor channel definition. Bank erosion is widespread throughout as a result of hoof shear and lack of deep rooting vegetation. The riparian buffer along most of the reach is nonexistent as a result of the removal of riparian vegetation along both streambanks. At the upper end of the reach, a headcut has been arrested by an existing stream crossing and associated rip rap. Further downstream, channel formation is poor as a result of cattle trampling and wallowing. Bank height ratios throughout R1 exceed 4.0 and the reach has a low sinuosity (k=1.12). Severe bank erosion and channel aggradation was observed throughout the reach. A few larger mature trees exist along the downstream portion; however, cattle have unrestricted access to 100 percent of R1, which has resulted in sparse understory vegetation establishment. R1 is actively subject to water quality stressors, mainly in the form of cattle trampling and minimal riparian buffer widths. Based on the existing channel conditions and historic anthropogenic disturbances, R1 is classified as a severely incised E5b/F5b stream type throughout most of its length. R2 is an intermittent stream that begins approximately 200 feet downstream of a roadway culvert under Caudle Road. From this culvert, R2 continues for approximately 286 feet to the confluence with R3. The average valley slope is 3.3 percent and the drainage area is 41 acres. R2 is severely incised, with active bank erosion present and bank height ratios exceeding 2.0. The sinuosity is with low sinuosity (k=1.08). Bank erosion appears to have resulted from bank scour and lateral instability caused by high near bank stresses during storm flows. Looking upstream at headcut, debris in channel, and severe bank erosion along R2. Photo of R1 showing severe cattle trampling and a lack of woody riparian buffer vegetation. Water & Land Solutions Horne Creek Tributaries Mitigation Project Page 15 DMS Project #100026 R2 appears to have been historically manipulated. This is evidenced by the unnatural position of the existing channel where it has been relocated away from the valley center/low point to the toe of the left valley wall. The riparian buffer on the right bank consists of maintained lawn with some large trees along the top of bank. The riparian buffer on the left valley slope consists of some mature trees with little understory vegetation. Based on the existing conditions and medium gravel to small cobble bed materials, R2 is classified as an incised G4 stream type. R3 is a small intermittent stream that begins at an existing tree root that is providing grade control, approximately 75 feet before its confluence with R2. Along this reach, the bedform diversity is unnatural and the degree of incision is high, with bank height ratios exceeding 2.7, along with low sinuosity (k=1.07). R3 has a small drainage area of approximately 29 acres. R3 has experienced significant cattle intrusion and associated trampling for most of its length and the riparian buffer is limited to herbaceous vegetation with a few small trees. Bank erosion is widespread throughout the reach. The entire reach is subject to active water quality stressors, mainly resulting from hoof shear from unrestricted cattle access and little to no riparian buffers on the streambanks. Based on the existing conditions, R3 is classified as an incised E6b stream type. R4 is a perennial stream that begins at the confluence with R2 and R3. The channel flows south for approximately 1,191 feet before its confluence with R4b. R4 has an average valley slope of 3.8 percent and a drainage area of 83 acres. R4 is exposed to cattle intrusion along its entire length and the riparian buffer is limited to herbaceous vegetation with a few small and larger trees. R4 appears to be highly incised, with active bank erosion present, along with channel aggradation, livestock intrusion and associated trampling, and bank height ratios exceeding 4.0. Photo depicts degraded stream channel conditions along R2 near its confluence with R3. R3 looking upstream towards existing headcut from confluence with R2 and R4. Water & Land Solutions Horne Creek Tributaries Mitigation Project Page 16 DMS Project #100026 The lower end of R4 at its confluence with R4a has poor channel definition resulting from cattle intrusion and associated trampling and wallowing. R4 is subject to water quality stressors, mainly in the form of cattle access and minimal riparian buffer widths. Based on the existing channel conditions and anthropogenic disturbances, R4 is classified as B4 stream type for most of its length. R4a is a small perennial headwater tributary that begins at a spring head within the upper catchment. The channel flows south for approximately 124 feet before its confluence with R4. R4a has a small drainage area of approximately 29 acres. R4a has experienced the results of severe cattle intrusion, but beginning downstream of the spring head, the remainder of R4a maintains a stable channel form until it meets R4. The riparian buffer is limited to herbaceous vegetation with a few small trees. R4a is actively subject to water quality stressors, mainly in the form of cattle access and minimal riparian buffer widths. The reach classifies as a B4 stream type throughout most of the reach that is defined. R4b is a small perennial headwater tributary that begins at a spring head within the upper catchment. The channel flows south for approximately 75 feet before its confluence with R4/R5. R4b has a very small drainage area of approximately 1.67 acres. R4b appears to be stable for most of its length except for a short section impacted by a headcut that has propagated upstream from R5. Looking downstream at cattle wallowing area of R4. Note poor channel definition resulting from cattle intrusion. Looking upstream along stable section of R4a. Water & Land Solutions Horne Creek Tributaries Mitigation Project Page 17 DMS Project #100026 R4b is subject to water quality stressors, mainly in the form of cattle access and minimal riparian buffer widths. The reach classifies as a G5 in the section below a headcutting propagating upstream. R5 begins at the confluence of R4 and R4b. R5 flows approximately 2,519 feet before it enters a roadway culvert under Kiger Road. R5 has an average valley slope of 2.4 percent and drainage area of 166 acres. The riparian buffer is limited to an immature hardwood forest with a few larger trees in the upper reaches. The lower section lacks a riparian buffer resulting from current land use practices. The channel is severely incised and the upper 1,400 feet exhibits moderate planform geometry. The lower 1,120 feet of the reach appears to have been manipulated and straightened. This is evidenced through its position in valley and observed spoil piles along the top of the streambanks. Bank erosion is widespread throughout this reach. The riparian buffer is nonexistent or consists of immature vegetation, and there is clear evidence that the riparian vegetation has been removed along both streambanks. Bank height ratios throughout R5 often exceed 3.0 and the reach has a moderate sinuosity (k=1.3) in the upper reach, and a low sinuosity (k=1.02) along the lower reach. Severe bank erosion and channel aggradation was observed throughout the reach. A few mature trees exist the throughout reach, however cattle have unrestricted access to 100 percent of R5, which has led to sparse understory vegetation establishment. R5 is actively subject to water quality stressors, mainly in the form of cattle access and minimal riparian buffer widths. Based on the existing channel conditions and anthropogenic disturbances, R5 is classified as an incised B4c/G4c stream type for most of its length. 3.4.2 Channel Morphology and Stability Assessment WLS conducted geomorphic and ecological assessments for each Project reach to assess the current stream channel condition and overall lateral and vertical stability. Data collection included seven representative riffle cross-sections, longitudinal profiles, and sediment samples. The existing channel morphology is summarized in Table 9 and detailed geomorphic assessment data is included in Appendix 2. Consistent geomorphic indicators of the bankfull stage were difficult to identify in the field given the modified flow regime and degraded channel conditions. Therefore, bankfull cross-sectional areas were Looking downstream along R5. Note severe bank erosion and lack of mature buffer vegetation. Looking downstream along stable section of R4b. Note stable bed and banks adjacent wetlands and lack of mature forest. Water & Land Solutions Horne Creek Tributaries Mitigation Project Page 18 DMS Project #100026 initially compared with the published NC Rural Piedmont Regional Curve (Harman et al., 1999). The surveyed cross-sectional areas were slightly below the regional curve prediction (See Appendix 2 for comparison plots). Bank Height Ratios (BHR) were measured in the field to assess the degree of channel incision. BHRs ranged from 1.7 (R4a) to greater than 7.1 (R1). BHR values greater than 1.5 typically indicate the stream channel is disconnected from its floodplain and system wide self-recovery is considered unlikely to occur within a desired timeframe (Rosgen, 2001). Entrenchment Ratios (ER) were measured to determine the degree of vertical confinement. ERs ranged from 1.2 (R5) to greater than 4.1 (R1) throughout the project area indicating reach segments are slightly-to-moderately entrenched. Table 9. Existing Channel Morphology Summary Project Reach Designation Watershed Drainage Area (Ac)1 Entrenchment Ratio (ER) Width/Depth Ratio (W/D) Bank Height Ratio (BHR) Sinuosity (K) Channel Slope (S, ft/ft) D50 (mm) R1 37.8 4.1/1.1 3.3/13.0 3.0/7.2 1.12 0.0326 22.6 R2 41.0 1.2 6.4 2.1 1.08 0.0301 24.6 R3 29.4 4.0 5.8 2.7 1.07 0.0463 16.6 R4 83.2 1.7 8.9 4.4 1.29 0.0296 23.1 R4a 28.8 1.4 10.6 1.7 1.18 0.0197 10.0 R4b 1.66 1.3 7.9 4.3 1.02 0.0255 2.0 R5 166.4 1.9/1.2 7.2/10.6 3.2/4.5 1.3 0.0187 19.6 Note 1: Watershed drainage area was approximated based on topographic and LiDAR information and compared with USGS StreamStats at the downstream end of each reach. Note 2: Cross-section locations are shown on Figure 8, Channel Stability & Pre-Monitoring Features. Note 3: Geomorphic parameters for project reaches are based on best professional judgment and rapid field measurements. Note 4: Additional values and dimensionless ratios for meander geometry and facet slopes are provided in Appendix 2. The existing degraded channel parameters are compared to stable stream systems in the Piedmont Physiographic Region. WLS also compared historic aerial photographs with BANCS model estimates (Rosgen, 2006) described in Section 3.1.5 to identify areas susceptible to lateral bank erosion or accelerated meander migration. BEHI/NBS rating forms are in Appendix 2. Based on this comparison, most of the laterally unstable reach segments have occurred after riparian buffers where removed over the past few decades. As described in the reach condition summaries, the average valley slopes range from 1.9 to 4.7 percent and channel sinuosities range from 1.02 to 1.30. Most of the vertical grade control along the project reaches appears to be provided by infrequent vegetation root mass, bedrock outcrops, and culvert crossings. The surveyed longitudinal profile indicates reaches R2, R3, and R4a have headcuts near the upper segments and have been heavily manipulated. Many of the reach segments have poor bedform diversity and minimal habitat features with shallow pools and longer/flatter riffles with higher pool-to-pool spacing. Reach R1 is vertically unstable throughout the reach however, below the dilapidated culvert the reach exhibits marginal bedform morphology and some habitat features (woody debris) with heavy bank erosion. Reaches R2 and R3 are marginally stable due to their drainage area but exhibit poor bedform morphology. Reach R4 is laterally unstable throughout the Water & Land Solutions Horne Creek Tributaries Mitigation Project Page 19 DMS Project #100026 reach but does have woody and herbaceous vegetation that helps reduce excessive degradation. R4a is relatively stable except but transition to vertically unstable following a headcut resulting from downcutting in Reach R4. Reach R4b is relatively stable but does have a headcut resulting from downcutting occurring in Reach R4. Reach R5 is laterally unstable on the upper portion of the reach and has been channelized in the lower section. NC SAM: WLS completed stream evaluations of the Project reaches using the NC Stream Assessment Method (NC SAM, Version 2.1, 2015) developed by the NC Stream Functional Assessment Team (SFAT). The purpose of NC SAM is to provide the public and private sectors with an accurate, consistent, rapid, observational, and science-based field method to determine the level of function of streams within North Carolina. NC SAM can be used as a tool for the consideration of project restoration design and planning, allowing for impacts to be avoided and/or minimized, and to provide information concerning assessed stream characteristics and functions for the regulatory review process. WLS evaluated the NC SAM metrics relevant to the project assessment reaches, as shown in Appendix 8. The metrics were documented to evaluate various stream functions. The Project reach scores ranged from ‘low’ to ‘medium’. Reaches R1, R2 and R3 scored ‘low’ due unstable channel and bank conditions, buffer and water quality stressors from cattle access, and altered stream morphology. Reaches R4, R4A, R4B and R5 scored ‘’medium” because of improved aquatic habitat, substrate and marginal buffer widths. These channel stability and ecological assessments incorporated qualitative and quantitative observations using historic aerials, field evaluations, and detailed topographic survey data collected across the site. The conclusions from these assessments help describe the current stream stability, ecological conditions and functional ratings, however, these methods are not intended to be used for determining mitigation success on constructed stream and wetland sites. 3.4.3 Channel Evolution The modified Simon Channel Evolution Model (CEM) describes a predictable sequence of change in a disturbed channel system (Simon, 1989). Channel evolution typically occurs when a stream system begins to change its morphologic condition, which can be a negative or positive trend towards stability. The channel evolution processes and stage vary across the Project site and have been greatly affected by human-induced disturbances. After reviewing the channel dimension, plan form, and longitudinal profile information, WLS concluded that none of the Project reaches currently exhibit positive trends towards stability or quasi-equilibrium. Project reaches R1, R2 and R3 vary between Class ‘III’ and ‘IV’ of the CEM as evidenced by migrating headcuts and will likely continue to degrade and widen. Reach R4 and R5 are transitioning from Class ‘IV’ to Class ‘V’ as evidenced by channel widening and sediment aggradation. Reach R4a and R4b are transitioning from Class ‘I’ to Class ‘II’ resulting from downcutting occurring in Reach R4. The proposed stream restoration approaches described in Section 6.1 are supported by these observations. 3.4.4 Sediment Supply, Delivery and Storage Visual inspections of the channel substrate materials were conducted for each of the Project stream reaches. Representative bed materials were bulk sampled from all reaches. The existing streams consist of predominantly medium to coarse gravel, with some small cobble materials (D50 ranging from 15.2 mm on R1, 13.7 mm on R4, and 45.6 mm on R5). Subpavement sampling indicating D50 ranging from 21 mm Water & Land Solutions Horne Creek Tributaries Mitigation Project Page 20 DMS Project #100026 on R1 to 45.8 mm. Due to past downcutting associated with headcut migration, most grade control along the project reaches appears to be provided by exposed bedrock knickpoints and ford/culverted stream crossings. Much of the parent material, which contains fine/medium gravel particle sizes, are mostly buried and still evident in some of the bank profiles. Field investigations suggest that the sediment supply is being recruited predominantly from streambank erosion along the project stream reaches. The streambank erosion along the project stream reaches appears to be limited during episodic storm flows due to the small headwater drainages, minimal impervious cover, cattle hoof shear, and influences from herbaceous vegetation and rotational hay crop cover. Over the past few decades, the removal of woody buffer vegetation from the stream channels has decreased channel stability and increased the episodic pulse deliveries of stored sediment to downstream channels (Bilby, 1984). This anthropogenic derived sediment does not occur uniformly over the landscape (James, 2013) and changes in the amount and local storage areas for water and sediment can substantially affect hydrogeomorphic variability in headwater stream systems (McKenney et al. 1995). Improving the existing stream crossings and restoring more natural flood flows will facilitate positive adjustments to sediment routing and storage across the reconnected floodplain. 3.4.5 Jurisdictional WOTUS WLS investigated on-site jurisdictional waters of the US (WOTUS) using the US Army Corps of Engineers (USACE) Routine On-Site Determination Method. This method is defined in the 1987 Corps of Engineers Wetlands Delineation Manual and subsequent Eastern Mountain and Piedmont Regional Supplement (USACE, 1987. Determination methods included stream classification utilizing the NCDWQ Stream Identification Form and the USACE Stream Quality Assessment Worksheet. Potential jurisdictional (JD) wetland areas as well as upland areas were classified using the USACE Wetland Determination Data Form. The results of the on-site field investigation indicated that Project Reaches R1, R2, R3, R4, R4a, R4b, and R5 were determined to be jurisdictional stream channels. Project Reaches R1, R4, R4b, and R5 were determined to be perennial while Project Reaches R2, R3, and R4a were determined to be intermittent. Four (4) jurisdictional wetland areas were delineated within the proposed project area (See Figure 6) and are located within the floodplain areas along the project stream reaches. WLS received a preliminary JD approval letter from the USACE in March 2019 and supporting documents and are located in Appendix 9. Currently, some of the existing wetland areas located in the floodplain have been impacted by cattle wallowing and past land clearing. After restoration activities, these areas will experience a more natural hydrology and flooding regime, and the riparian buffer area will be planted with native woody vegetation species that is more tolerant of wet conditions. The restoration design approach will likely enhance any areas of adjacent fringe or marginal wetlands. Existing stream profiles will be elevated along all reaches, which will improve local water table conditions adjacent to the channels and encourage more frequent flooding of riparian wetland areas. The proposed stream and wetland impacts are considered temporary and included with the 401/404 permit application. Water & Land Solutions Horne Creek Tributaries Mitigation Project Page 21 DMS Project #100026 3.5 Potential Site Constraints 3.5.1 Existing Easements and Right-Of-Ways on the Site No existing easement exists within the project site. There is an area along the left terrace of R1 and the downstream extent of R5 that is impacted by a road right-of-way. The road right-of-way along R1 is impacting the minimum buffer width for approximately 200 linear feet of the left buffer width along R1. This is documented in Figure 11b and is included in the stream buffer credit calculator output in Appendix 2. Additionally, R5 is impacted by a road right-of-way at the downstream reach extent. The road right-of- way is impacting the minimum buffer channel buffer width in the left floodplain for approximately 40 linear feet. This is documented in Figure 11a and is included in the stream buffer credit calculator output in Appendix 2. 3.5.2 Utility Corridors within the Site There is an existing utility crossing on the downstream extent of reach R5 that parallels Kiger Road. This existing utility easement was excluded from the conservation easement boundary. 3.5.3 Mineral or Water Rights Assurance There are no mineral or water rights issues within or adjacent to the Project properties. 3.5.4 Hydrologic Trespass None of the Project reaches are located within a FEMA regulated floodplain. While it is not anticipated that there will be issues associated with FEMA permitting or documentation, WLS will coordinate with the local floodplain administrator as needed and prepare the required documentation to obtain approval for any FEMA regulated impacts. In addition, the Project will be designed so that any increase in flooding will be contained within the Project boundary and will not impact adjacent landowners; therefore, hydrologic trespass will not be a concern. 3.5.5 Invasive Species Vegetation There are currently no substantial communities of invasive plant species within the Project boundaries. Some small, immature Chinese privet plants and multiflora rose were observed within the existing riparian buffer areas. These areas will be monitored by WLS, and any invasive plants found within the Project boundary will be treated to prevent expansion and establishment of a substantial invasive community. 4 Functional Uplift Potential Harman et al. (2012) provides a framework for conducting function-based assessments to develop project goals and objectives based on a site’s restoration potential and functional uplift. The framework is based on the Stream Functions Pyramid (SFP) which is a conceptual model that can be used to better define project goals and objectives by linking them to stream functions. Stream functions are separated into a hierarchy of functions and structural measures, ranging from Level 1 to Level 5 and include the following functional categories: Hydrology (Level 1), Hydraulic (Level 2), Geomorphic (Level 3), Physiochemical (Level 4), and Biological (Level 5). Chapter 4 of A Function-Based Framework (Harman et al., 2012) provides Water & Land Solutions Horne Creek Tributaries Mitigation Project Page 22 DMS Project #100026 a more detailed description of the SFP and is illustrated in Appendix 2. The SFP framework is applied below to further describe the functional lift potential based on the existing conditions assessment and proposed restoration design elements. 4.1.1 Function-Based Parameters and Measurement Methods Function-based parameters and measurement methods were evaluated using the NC Stream Functional Lift Quantification Tool (SQT, v3.0) to help assess the existing stream conditions, determine restoration potential and identify risks associated with the project site. The SQT is a qualitative and quantitative resource used to describe the function-based condition of each project reach, as well as evaluate functional capacity and predict the overall proposed lift (Harman and Jones, 2016). WLS applied the SQT to help further define goals and objectives based on the restoration potential. The results of this assessment helped determine the highest level of restoration that may be achieved based on-site constraints and existing conditions. Table 10 shows the function-based condition assessment parameters and measurement methods selected to help quantify and describe each functional category. The complete SQT functional assessment worksheets and summaries are provided in Appendix 2. Table 10. Existing and Proposed Functional Condition Assessment Summary Functional Category (Level) Function-Based Parameters Measurement Method Hydrology (Level 1) Catchment Hydrology Catchment Assessment/ Curve Number Runoff Curve Number Hydraulics (Level 2) Floodplain Connectivity Bank Height Ratio Entrenchment Ratio Bank Migration/Lateral Stability Meander Width Ratio BEHI/NBS Riparian Vegetation Left Buffer Width (ft) Right Buffer Width (ft) Left Density (stems/acre) Right Density (stems/acre) Bed Form Diversity Pool Depth and Spacing Ratio Percent Riffle and Pool Geomorphic (Level 3) Sinuosity Plan Form Channel Evolution Simon Channel Evolution Model Physicochemical (Level 4) Organic Carbon Percent Shredders Biology (Level 5) Macrobenthos Biotic Index EPT Taxa Present Note: Table adapted from Harman et al. (2012). 4.1.2 Performance Standards and Functional Capacity The Pyramid Framework includes performance standards associated with the function-based assessments and measurement methods described above. The performance standards are used to determine the functional capacity and are stratified into three types: Functioning (F), Functioning-at-Risk (FAR), and Not Functioning (NF). The detailed definitions and index value ranges for each type are described further in Water & Land Solutions Horne Creek Tributaries Mitigation Project Page 23 DMS Project #100026 the SQT (Harman and Jones, 2016). Table 11 summarizes the overall reach scoring and functional lift summary for each project reach. Table 11. Functional Lift Scoring Summary Reach Scoring / Rating R1 R2 R3 R4 R4A R4B R5 Overall Existing Condition Score (ECS) 0.15 0.24 0.31 0.31 0.27 0.24 0.38 Overall Proposed Condition Score (PCS) 0.79 0.48 0.49 0.50 0.49 0.49 0.90 Functional Lift Score 0.64 0.24 0.18 0.19 0.22 0.25 0.52 Percent Condition Lift (%) 427% 100% 58% 61% 81% 104% 137% Functional Foot Score (FFS) Existing vs. Proposed 210 69 14 234 48 53 1106 Functional Lift (%) 412% 107% 58% 63% 144% 249% 116% Overall Existing vs. Proposed Condition NF / FAR NF / FAR FAR / FAR FAR / FAR NF / FAR NF / FAR FAR / FAR 4.1.3 Restoration Potential After completing the function-based assessment, the restoration potential was determined to better define the Project design goals and objectives. It is common for restoration projects to occur at a reach scale that provide minimum functional lift of Level 2 and 3 parameters. However, to achieve goals in Levels 4 and 5, a combination of reach scale restoration and upstream watershed health must be measurable and sustainable. The overall restoration potential was determined at Level 3 (Geomorphology) since the watershed assessment scored ‘Fair’ and may not fully support biological reference conditions in the upper reaches given the current nutrient inputs, smaller drainages, intermittent flow, and current watershed conditions. Based on the existing condition assessments, the overall bioclassification is considered ‘Fair’. It is expected that the implementation of this project will reduce pollutant loads, including sediment and nutrients, improving overall aquatic functions and bioclassification from ‘Fair’ to ‘Good’. Given the landscape position and catchment size, the restoration activities will likely provide functional lift within the physicochemical and biological functional categories. Post-restoration efforts will also include supplemental monitoring of biological parameters (Level 5 Category) to document any functional improvements and/or identify trends during the monitoring period. However, any Level 4 and 5 function-based parameters and monitoring activities will not be tied to performance standards nor required to demonstrate success for credit release. The SQT manual recommends that practitioners, stakeholders and regulators collaborate when selecting appropriate parameters for determining whether project goals and objectives are being met or if any performance standards need to be adjusted based on local site conditions. Not all functional categories and parameters, such as water quality (Physicochemical - Level 4) and performance standards listed in the SQT will be compared or required to determine project success and stream mitigation credit and debit scenarios. However, selecting applicable monitoring and evaluation methods will help develop a more function-based assessment and improve our project implementation process, thereby advancing the practice of ecosystem restoration. Water & Land Solutions Horne Creek Tributaries Mitigation Project Page 24 DMS Project #100026 5 Mitigation Project Goals and Objectives WLS set mitigation project goals and objectives to provide compensatory mitigation credits to DMS based on the resource condition, functional capacity and restoration potential of the watershed to improve and protect diverse aquatic resources comparable to stable headwater stream systems within the Piedmont Physiographic Province. The proposed mitigation types and design approaches considered the general restoration and resource protection goals and strategies outlined in the Upper Yadkin Pee-Dee River Basin Restoration Priority Plan (RBRP, 2009). More specifically, watershed goals and management strategies described in the Upper Yadkin Local Watershed Plan (LWP) will be met by: • Reducing sediment, soil erosion, turbidity, and nutrient inputs such as fecal coliform bacteria, nitrogen, and phosphorus to the Horne Creek Watershed. • Restoring, enhancing, preserving and protecting headwater streams, wetlands, riparian buffers and aquatic habitat functions. • Improving riparian corridor management and targeting restoration of impacted streams and riparian buffer areas. • Promoting agronomic farm management techniques and implementing agricultural BMPs and water quality features such as livestock exclusion fencing, alternative watering structures, nutrient management, and wetlands restoration. • Coordinating with landowners and NRCS/USDA through local program(s), farmland protection planning and education/outreach. The following site-specific goals were developed to address the primary concerns outlined in the LWP and RBRP and include: • Restore stream and floodplain interaction and geomorphically stable conditions by reconnecting historic flow paths and promoting more natural flood processes, • Improve and protect water quality by reducing streambank erosion, nutrient and sediment inputs, • Restore and protect riparian buffer functions and habitat connectivity in perpetuity by recording a permanent conservation easement, • Implement agricultural BMPs to reduce nonpoint source inputs to receiving waters. Function-based goals and objectives were considered that relate restoration activities to the appropriate parameters from the SFP framework, which are based on existing conditions, site constraints and overall restoration potential. When developing realistic function-based project goals and design objectives, it is imperative to know why the functions or resources need to be restored (Goal) and what specific restoration activities and measurement methods will be used to validate the predicted results (Objective). To accomplish these site-specific goals, the following function objectives will be measured to document overall project success as described in Table 12 below. Water & Land Solutions Horne Creek Tributaries Mitigation Project Page 25 DMS Project #100026 Table 12. Function-Based Goals and Design Objectives Summary Functional Category (Level) Functional Goal / Parameter Functional Design Objective Hydrology (Level 1) Improve Base Flow Improve and/or remove existing stream crossings and restore a more natural flow regime and aquatic passage. Hydraulics (Level 2) Reconnect Floodplain / Increase Floodprone Area Widths Design BHRs to not exceed 1.2 and increase ERs no less than 2.2 Rosgen ‘C’ and ‘E’ stream types and 1.4 for ‘B’ stream types. Geomorphology (Level 3) Improve Bedform Diversity Increase riffle/pool percentage and pool-to- pool spacing ratios. Increase Lateral Stability Reduce BEHI/NBS streambank erosion rates comparable to downstream reference condition and stable cross-section values. Establish Riparian Buffer Vegetation Plant native species vegetation a minimum 30’ wide from the top of the streambanks with a composition/density comparable to downstream reference condition. Physicochemical (Level 4) Improve Water Quality Remove cattle from riparian corridor and increase percent shredders. Biology (Level 5) Improve Macroinvertebrate Community and Aquatic Species Health Incorporate native woody debris into channel. As described in Section 4, the function-based assessment suggests that the proposed mitigation activities will result in a higher functioning aquatic ecosystem. The project goals and objectives address water quality stressors by reducing nutrient and sediment inputs through stream restoration, riparian buffer restoration, riparian wetland restoration and implementing agricultural BMPs. Hydrologic functions will be improved by raising the local water table. A more natural flow regime will be restored to riparian wetlands and floodplain areas by implementing a Priority Level I Restoration. The water quality functions will also be improved by installing permanent cattle exclusion fencing. The biologic and habitat functions will be improved by extending wildlife corridors that connect with wooded areas near the upstream and downstream extents of the project reaches. Additionally, site protection through a conservation easement in excess of 30 feet from the top of banks, will protect all stream reaches and aquatic resources in perpetuity. These mitigation efforts will provide a significant ecological benefit with minimal impacts and constraints during a recovery period that would not otherwise occur through natural processes. 5.1.1 Project Benefits Summary The project will provide numerous water quality and ecological benefits within the Upper Horne Creek Watershed. While many of these benefits will focus on the project area, others, such as nutrient removal, sediment reduction, and improved aquatic and terrestrial habitat, others have more far-reaching effects that extend downstream. The expected project benefits and ecological improvements are summarized below in Table 13. Water & Land Solutions Horne Creek Tributaries Mitigation Project Page 26 DMS Project #100026 Table 13. Project Benefits Summary Benefits Related to Hydrology Rainfall/Runoff Improving existing stream crossings and properly sizing pipe culverts and water quality treatment features will reestablish more natural flow conditions and water transport during various storm events. Benefits Related to Hydraulics Floodplain Connectivity The restored streams will be raised and reconnected to their active or relic floodplains to spread higher flow energies onto the floodplain thereby increasing retention time and floodplain roughness. Surface Storage and Retention Incorporation of vernal pools, depressional areas, and other constructed floodplain features will improve flow dynamics by reducing runoff velocities and provide additional surface storage and habitat diversity. Groundwater Recharge/ Hyporheic exchange Benefits will be achieved through establishing vegetated buffers, which increase groundwater infiltration, surface water interaction, and recharge rates. Benefits Related to Geomorphology Proper Channel Form Restoring an appropriate dimension, pattern, and profile will efficiently transport and deposit sediment (point bars and floodplain sinks) relative to the stream’s power and load that is supplied from banks and uplands. Stream channels that are appropriately sized to convey higher frequency storm flows will greatly improve channel stability by reducing active bank erosion (lateral stability) and bed degradation (vertical stability; i.e. headcuts, downcutting, incision). Sediment Transport Boundary conditions, climate, and geologic controls influence stream channel formation and how sediment is transported through its watershed. Adequate channel capacity will ensure sediment supply is distributed such that excessive degradation and aggradation does not occur. Riparian Buffer Vegetation Planting buffer vegetation will improve thermal regulation (stream shading) along the riparian corridor, as well as increase woody root mass and density thereby decreasing bank erosion and sedimentation and increasing organic matter and woody debris. Bioengineering Treatments Bioengineering practices such as live staking, brush layering, and vegetated soil lifts will help encourage lateral bank stability and prevent further bank erosion and sedimentation. Benefits Related to Physicochemical (Water Quality) Nutrient Reduction Benefit will be achieved through the removal of cattle manure in the form of fecal coliform bacteria and excess nutrients through exclusion fencing, filtration and nutrient uptake within the restored and enhanced vegetated buffers. Sediment Reduction Benefit will be achieved through stabilization of eroding banks; installation of vegetation buffers; and by dissipating stream energy with increased overbank flows during storm events. DO, NO3-, DOC Concentration Benefits will be achieved through the restoration of more natural stream forms including riffle and pool sequences, which will increase dissolved oxygen (DO) concentrations. In addition, as planted riparian buffers mature, the increased shade and wider vegetation density/structure will reduce water temperatures and groundwater nitrates (NO3-) as well as increase dissolved organic carbon (DOC) (King et al, 2016). Water & Land Solutions Horne Creek Tributaries Mitigation Project Page 27 DMS Project #100026 Benefits Related to Biology Terrestrial and Aquatic Habitat Benefits will be achieved through the incorporation of physical structure, removal of invasive species vegetation and returning native vegetation to the restored buffer areas. Benefits to aquatic organisms will be achieved through the installation of appropriate in-stream structures. Adequately transporting and depositing fine-grain sediment onto the floodplain will prevent embeddedness and create interstitial habitat, organic food resources and in- stream cover. Landscape Connectivity Benefits to landscape connectivity will be achieved by restoring a healthy stream corridor, promoting aquatic and terrestrial species migration and protecting their shared resources in perpetuity. 6 Design Approach and Mitigation Work Plan The project includes the restoration, enhancement, and permanent protection of seven stream reaches (R1, R2, R3, R4, R4a, R4b, and R5) totaling approximately 5,681 linear feet of existing tributaries (See Figure 10). The design approach will utilize the entire suite of stream mitigation practices, from Priority Level I Restoration to Enhancement Level II, and appropriately addresses all the intermittent and perennial stream reaches at the project site. The project also includes restoring riparian buffers and riparian wetlands along streams currently in agriculture or pasture, providing permanent livestock exclusion, and improving the existing stream crossings, thus providing the maximum functional uplift and a unique opportunity to implement a comprehensive watershed approach. The mitigation components and proposed credit structure is outlined in Table 14 and the design approach and mitigation work plan are described in the following subsections. Water & Land Solutions Horne Creek Tributaries Mitigation Project Page 28 DMS Project #100026 Table 14. Mitigation Components and Proposed Credit Summary Project Component Existing Footage or Acreage Proposed Reach Stationing Restored Footage, Acreage, or SF Creditable Footage, Acreage or SF Restoration Level Approach Priority Level Mitigation Ratio (X:1) Mitigation Credits R1 1,397 10+00 – 23+40 1,320 1,320 R PI/PII 1 1,320 R2 286 10+17 – 13+13 296 296 R PII 1 296 R3 75 11+80 – 12+55 76 76 R PII 1 76 R4 1,191 13+13 – 25+19 1,167 1,167 R PI/PII 1 1,167 R4a 124 10+98 – 11+54 57 57 EII - 2.5 23 R4a - 11+55 – 12+65 111 111 R PI 1 111 R4b 89 10+72 – 10+99 27 27 EII - 2.5 11 R4b - 10+99 – 12+24 125 125 R PI 1 125 R5 2,519 25+19 – 48+12 2,249 2,249 R PI 1 2,249 Totals 5,681 5,428 5,428 5,378 Credit Loss in Required Buffer -300 Credit Gain for Additional Buffer 325 Net Change in Credit from Buffers +25 Total Credits per Buffer Calculator 5,403 Total Adjusted SMCs 5,389 Note 1: No mitigation credits were calculated outside the conservation easement boundaries. Note 2: The difference in Proposed Reach Stationing length and Restored Footage is the result of permanent crossings. Note 3: The Wilmington District Stream Buffer Calculator was used to determine credit losses/gains due to 11% of the total project lengths buffer widths being less than 30’. Based on the stream buffer credit calculator the total net increase in stream credits is 25 credits. This is due in part to many areas within the buffer being greater than 30’. WLS is proposing the adjusted SMCs totaling 5,389 credits. Note 4: Values in table were rounded to the nearest whole number. 6.1 Stream Mitigation Credit Adjustments To calculate the stream credit adjustments, WLS utilized the USACE-Wilmington District Stream Buffer Credit Calculator (USACE, 2018). To perform this calculation, a GIS analysis was performed to determine the area (in square feet) of ideal buffer zones and actual buffer zones around all streams within the project. Minimum standard buffer widths were measured from the top of bank (50 feet in Piedmont and Coastal Plain counties or 30 feet in Mountain counties). The ideal buffers are the maximum potential size (in square feet) of each buffer zone measured around all creditable stream reaches, calculated using GIS, including areas outside of the easement. The actual buffer is the square feet in each buffer zone, as measured by GIS, excluding non-forested areas, all other credit type (e.g., wetland, nutrient offset, buffer), Water & Land Solutions Horne Creek Tributaries Mitigation Project Page 29 DMS Project #100026 easement exceptions, open water, areas failing to meet the vegetation performance standard, etc. Additional credit is given to 150 feet in buffer width, so areas within the easement that are more than 150 feet from creditable streams were not included in this measurement. Non-creditable stream reaches within the easement were removed prior to calculating this area with GIS (for both ideal and actual). The stream lengths, mitigation type, ideal buffer, and actual buffer were all entered into the calculator. This is data was processed, and the resulting credit amounts were totaled for the entire project. See Tables 1 and 14, Figures 11a and 11b, and the stream buffer credit calculator in Appendix 2 for additional information. 6.2 Stream Design Approach As described above in Sections 4 and 5, WLS used function-based assessment methods and data analyses to determine overall restoration potential and functional uplift. The stream design approach generally followed the techniques and methods outlined in the NRCS Stream Restoration Design–National Engineering Handbook (NRCS, 2007) and Hydraulic Design of Stream Restoration Projects (USACE, 2001). In addition, the natural stable channel design (NCD) procedures outlined in the Natural Channel Design Review Checklist (Harman and Starr, 2011) were applied to address specific stream functions lost across the site, while also minimizing disturbances to existing wooded areas and higher functioning resources. WLS first compiled and assessed watershed information such as drainage areas, historical land use, geologic setting, soil types, sediment inputs and plant communities. Kee Surveying and Mapping then performed detailed existing conditions topographic and planimetric surveying of the project site and produced a 1-foot contour map, based on survey data, to create base mapping and plan sheets (See Appendix 1). Detailed geomorphic surveys were also conducted along the channel and floodplain to determine valley slopes/widths, channel dimensions, longitudinal profile elevations, and to validate the signatures shown on the LiDAR imagery (See Figure 5). Project stream design criteria was developed using a combination of industry sources and applied approaches, including a review of applicable reference reach data (analog), evaluation of published regression equations and hydraulic geometry relationships (regional curves), monitoring results from stable past projects (empirical), and building a 2D unsteady state hydraulic model using process-based equations (HEC-RAS) to test design channel geometry and bed stability (analytical). It should be mentioned, while analog and empirical form-based approaches have been proven effective in designing stable stream systems, their application assumes quasi-equilibrium conditions and similar watershed and boundary conditions (i.e. dominant discharge, flow regime, channel roughness, controlling vegetation). Using a static design template that accounts for natural channel variability can be limited by the regional data sets and overlook other local controlling factors such as flow impoundments, bedrock geology, woody debris/abundance, and sediment supply (Skidmore, 2001). Conversely, analytical or process-based approaches rely heavily upon precise data inputs and a more robust level of effort may not be practical or even necessary to replicate channel geometry given the model sensitivity and desired outcome. Designing dynamic headwater channels is an iterative process that requires a detailed assessment of sediment continuity and predicted channel response for a range of smaller flows. Although it is difficult to definitively predict long term hydrologic conditions in the watershed, designing an appropriate stream channel for the valley characteristics (i.e. slope, width, and Water & Land Solutions Horne Creek Tributaries Mitigation Project Page 30 DMS Project #100026 confinement) is always the preferred design rationale. Therefore, best professional judgment must be used when selecting appropriate design criteria for lifting the desired ecological functions. 6.2.1 Proposed Design Parameters The proposed design parameters were developed so that plan view layout, cross-section dimensions, and longitudinal profiles could be described for developing construction documents. The design philosophy considers these parameters as conservative guidelines that allow for more natural variability in stream dimension, facet slopes, and bed features to form over long periods of time under the processes of flooding, re-colonization of vegetation, and other watershed influences (Harman, Starr, 2011). Evaluating reference reach information and empirical data from monitoring stable rural Piedmont stream restoration projects provided pertinent background information and rationale to determine the appropriate design parameters given the existing conditions and restoration potential. The proposed stream design parameters also considered the USACE Stream Mitigation Guidelines issued in April 2003 (rev. October 2005) and the Natural Channel Design Checklist (Harman, 2011). Table 15. Proposed Design Parameters Parameter R1 R2 R3 R4 R4a R4b R5 Drainage Area, DA (sq mi) 0.059 0.064 0.046 0.130 0.045 0.003 0.260 Stream Type (Rosgen) B4 B4 B4a B4/C4b B4 B4 C4 Bankfull Riffle XSEC Area, Abkf (sq ft) 2.89 2.75 2.25 5.20 2.28 0.83 7.20 Bankfull Mean Velocity, Vbkf (ft/sec) 4.16 3.93 4.44 4.23 4.39 3.64 3.75 Bankfull Riffle Width, Wbkf (ft) 7.0 6.0 6.0 9.0 6.0 3.5 10.0 Bankfull Riffle Mean Depth, Dbkf (ft) 0.4 0.5 0.4 0.6 0.4 0.3 0.7 Width to Depth Ratio, W/D (ft/ft) 17.0 13.1 16.0 15.6 16.0 14.8 13.9 Width Floodprone Area, Wfpa (ft) 28 – 65 15 – 19 20 – 34 38 – 79 25 – 46 8 – 46 54 – 134 Entrenchment Ratio, Wfpa/Wbkf (ft/ft) 4 – 9.3 2.5 – 3.2 3.3 – 5.7 4.2 – 8.8 4.2 – 7.7 2.3 – 13.1 5.4 – 13.4 Riffle Max Depth Ratio, Dmax/Dbkf 1.3 1.2 1.3 1.3 1.3 1.3 1.3 Bank Height Ratio, Dtob/Dmax (ft/ft) 1.0 1.0 1.0 1.0 1.0 1.0 1.0 Meander Length Ratio, Lm/Wbkf 7.0 – 12.0 7.0 – 12.0 7.0 – 12.0 7.0 – 12.0 7.0 – 12.0 7.0 – 12.0 7.0 – 12.0 Radius of Curvature Ratio, Rc/Wbkf 2.0 – 3.0 2.0 – 3.0 2.0 – 3.0 2.0 – 3.0 2.0 – 3.0 2.0 – 3.0 2.0 – 3.0 Meander Width Ratio, Wblt/Wbkf 3.5-8.0 3.5 – 8.0 3.5 – 8.0 3.5 – 8.0 3.5 – 8.0 3.5 – 8.0 3.5 – 8.0 Channel Sinuosity, K ~1.1 ~1.1 ~1.1 ~1.3 ~1.1 ~1.1 ~1.2 Water & Land Solutions Horne Creek Tributaries Mitigation Project Page 31 DMS Project #100026 Parameter R1 R2 R3 R4 R4a R4b R5 Channel Slope, Schan (ft/ft) 0.0341 0.0302 0.0464 0.0290 0.0205 0.0241 0.0201 Riffle Slope Ratio, Sriff/Schan 1.1 – 1.8 1.1 – 1.8 1.1 – 1.8 1.1 – 1.8 1.1 – 1.8 1.1 – 1.8 1.5 – 2.0 Pool Slope Ratio, Spool/Schan 0.0 – 0.4 0.0 – 0.4 0.0 – 0.4 0.0 – 0.4 0.0 – 0.4 0.0 – 0.4 0.0 – 0.2 Pool Width Ratio, Wpool/Wbkf 1.1 – 1.5 1.1 – 1.5 1.1 – 1.5 1.1 - 1.5 1.1 - 1.5 1.1 - 1.5 1.3 – 1.7 Pool-Pool Spacing Ratio, Lps/Wbkf 1.5 – 5.0 1.5 – 5.0 1.5 – 5.0 1.5 – 5.0 1.5 – 5.0 1.5 – 5.0 1.5 – 7.0 Pool Max Depth Ratio, Dmaxpool/Dbkf 2.0 – 3.5 2.0 – 3.5 2.0 – 3.5 2.0 – 3.5 2.0 – 3.5 2.0 – 3.5 2.0 – 3.5 6.2.2 Design Reach Summary For design purposes, the stream segments were divided into multiple reaches labeled R1, R2, R3, R4, R4a, R4b, and R5, as shown in Figure 9. The following narrative summarizes the proposed design approach, rationale and justification for each of stream reaches. R1 – Restoration R1 begins at the upstream western boundary of the project site immediately downstream of an existing stream crossing. R1 has a stream length of approximately 1,397 feet and average valley slope of 3.4 percent. R1 is severely incised with bank height ratios (BHR) exceeding 4.0. The existing channel generally flows through the low point of the valley. The majority of the reach will be restored in its current location and will tie into the downstream channel. Work along R1 will involve relocating the channel towards the center of the valley and implementing a Priority Level I/II Restoration by raising the bed elevation and reconnecting the stream with its abandoned floodplain. The reach will be restored as a Rosgen B4 stream type using appropriate riffle-pool and step-pool morphology with minimal meander planform geometry that accommodates the valley slope and width. This approach will allow restoration of a stable channel form with appropriate bedform diversity, as well as improved ecological function through increased aquatic and terrestrial habitats. The proposed design width/depth ratio will range from 12-18, which will be similar to stable streams in this geologic setting. In-stream structures will be incorporated to control grade, dissipate flow energies, protect streambanks, and eliminate the potential for upstream channel incision. In-stream structures will include constructed riffles for grade control and aquatic habitat, log and rock weirs for encouraging step-pool formation, bank stability, and bedform diversity. Additionally, existing stream substrate will be reused in the project structures where appropriate. Bioengineering techniques such as geolifts and live stakes will also be used to protect streambanks and promote woody vegetation growth along the streambanks. Any mature trees or significant native vegetation will be protected and incorporated into the design. WLS proposes to plant native woody species vegetation and restore the riparian buffer in excess of 30 feet within the conservation easement in most areas. A section of the reach between Station 21+45 and Station 23+11 has a reduced left buffer width (less than 30 feet). This reduced buffer is due to an adjacent roadway Right-Of-Way (ROW) that will not allow for extension of the buffer width to the required 30 feet through the entire reach. To compensate for the reduced left buffer width in this section, WLS proposes to increase the right buffer width. The right buffer width ranges from 44 feet to 70 feet at its widest point. Water & Land Solutions Horne Creek Tributaries Mitigation Project Page 32 DMS Project #100026 Permanent fencing will be installed to permanently exclude livestock and reduce sediment and nutrient inputs. A permanent 20-foot culverted crossing will be installed to allow for landowner access between pastures. Additionally, a water quality treatment feature will be installed inside of the conservation easement to reduce direct sediment and nutrient inputs. Permanent fencing will be installed to exclude livestock and reduce sediment and nutrient inputs. These proposed restoration activities will provide the maximum possible functional uplift. R2 – Restoration R2 is an intermittent stream that begins approximately 200 downstream of a roadway culvert under Caudle Road. The valley slope is approximately 3.3 percent. R2 is severely incised with BHRs exceeding 2.0. During site investigations, the channel appears to have been historically manipulated and relocated away from the center/low point of the valley. The reach will be restored as a Rosgen B4 stream type using appropriate riffle-pool and step-pool morphology with minimal meander planform geometry that will accommodate the valley slope and width. This approach will allow restoration of a stable channel form with appropriate bedform diversity, as well as improved ecological function through increased aquatic and terrestrial habitats. The proposed design width/depth ratio will range from 12-18, which will be similar to stable streams in this geologic setting. In-stream structures will be incorporated to control grade, dissipate flow energies, protect streambanks, and eliminate the potential for upstream channel incision. In-stream structures will include constructed riffles for grade control and aquatic habitat and rock weirs for encouraging step-pool formation, bank stability, and bedform diversity. Additionally, existing stream substrate will be reused in the project structures where appropriate. Bioengineering techniques such as live stakes will also be used to protect streambanks and promote woody vegetation growth along the streambanks. WLS proposes to plant native woody species vegetation and restore the riparian buffer in excess of 30 feet within the conservation easement in most areas. Along the entire reach length there is a reduced left buffer width (less than 30 feet). This reduced buffer is due to an adjacent property that is currently not under option. This will not allow for extension of the buffer width to the required 30 feet through the entire reach. Finally, one agricultural BMP is proposed along R2 to capture, attenuate, and treat overland flow that would otherwise enter the riparian buffer as untreated water. The BMP will be constructed within the conservation easement to allow for easy access and maintenance and to protect the structure in perpetuity. R3 – Restoration R3 is an intermittent stream that begins approximately 75 feet upstream of the confluence with R2 and R4. The valley slope is approximately 5.0 percent. R3 is severely incised with BHRs exceeding 2.7. Work along R3 will involve Priority Level II by raising the bed elevation and reconnecting the stream with a constructed floodplain. The reach will be restored as a Rosgen B4a stream type using appropriate step- pool morphology with minimal meander planform geometry to accommodate the valley slope and width. This approach will allow restoration of a stable channel form with appropriate bedform diversity, as well as improved ecological function through increased aquatic and terrestrial habitats. The design width/depth ratio will range from 12-18, which will be similar to stable streams in this geologic setting. In-stream structures will be incorporated to control grade, dissipate flow energies, protect streambanks, and eliminate the potential for upstream channel incision. In-stream structures will include constructed riffles for grade control and aquatic habitat and rock weirs for encouraging step-pool formation, bank Water & Land Solutions Horne Creek Tributaries Mitigation Project Page 33 DMS Project #100026 stability, and bedform diversity. Additionally, existing stream substrate will be reused in the project structures where appropriate. Bioengineering techniques such as live stakes will also be used to protect streambanks and promote woody vegetation growth along the streambanks. Finally, two agricultural BMPs in series are proposed along R3 to capture, attenuate, and treat overland flow that would otherwise enter the riparian buffer as untreated water. The BMP will be constructed within the conservation easement to allow for easy access and maintenance and to protect the structure in perpetuity. R4 - Restoration R4 is begins at the confluence of R2 and R3. The valley slope is approximately 3.0 percent with the valley flattening as it nears the confluence with R4a. R4 is severely incised with BHRs exceeding 4.0. The channel appears to have been historically manipulated in a few locations, but generally flows through the low point of the valley. Work along R4 will involve a mix of Priority Level I and II Restoration by raising the bed elevation and reconnecting the stream with its adjacent floodplain or a constructed floodplain. A majority of the channel will be restored in its current location while the lower 200 feet will be relocated to its historic position to meander across the left floodplain to tie into R5. The reach will be restored as a Rosgen B4/C4b stream type using appropriate riffle-pool and step-pool morphology with a conservative meander planform geometry in the lower 200 feet that accommodates the valley slope and width. This approach will allow restoration of a stable channel form with appropriate bedform diversity, as well as improved ecological function through increased aquatic and terrestrial habitats. The design width/depth ratio will range from 12-18 for the channel will be similar to stable streams in this geologic setting. In-stream structures will be incorporated to control grade, dissipate flow energies, protect streambanks, and eliminate the potential for upstream channel incision. In-stream structures will include constructed riffles for grade control and aquatic habitat, log j-hook vanes, log vanes, and log and rock weirs for encouraging step-pool formation, bank stability, and bedform diversity. Two (2) permanent 20-foot culverted crossings will be installed to allow for landowner access between pastures. Additionally, existing stream substrate will be reused in the project structures where appropriate. WLS proposes to plant native woody species vegetation and restore the riparian buffer in excess of 30 feet within the conservation easement in most areas. A section of the reach between Station 13+13 and Station 13+60 has a reduced left buffer width (less than 30 feet). This reduced buffer is due to an adjacent property that is currently not under option and will not allow for extension of the buffer width to the required 30 feet through the entire reach. R4a – Enhancement Level II/Restoration R4a is small perennial headwater tributary that begins at a spring head within the upper catchment. It flows for approximately 100 ft before it becomes a jurisdictional stream. Work along R4a will involve Enhancement Level II practices in upper 57 linear feet to maintain and improve the stability of the channel. Currently the upper part of the existing channel is fairly stable with limited bank erosion and channel incision. The lower 111 feet will be restored as a Rosgen B4 stream type using appropriate riffle-pool and step-pool morphology with minimal meander planform geometry that will accommodate the valley slope and width. This approach will allow restoration of a stable channel form with appropriate bedform diversity, as well as improved ecological function through increased aquatic and terrestrial habitats. It will also allow the channel to be tied into Reach R4 which is being relocated. Water & Land Solutions Horne Creek Tributaries Mitigation Project Page 34 DMS Project #100026 In-stream structures will be incorporated to control grade, dissipate flow energies, protect streambanks, and eliminate the potential for upstream channel incision. In-stream structures will include constructed riffles for grade control and aquatic habitat and log weirs for encouraging step-pool formation, bank stability, and bedform diversity. Additionally, existing stream substrate will be reused in the project structures where appropriate. R4b – Enhancement Level II/Restoration R4b is another small perennial headwater tributary that begins at a spring head within the upper catchment. A majority of this reach is stable except for a small section at the downstream end where an active headcut has propagated upstream from R5. Work along R4b will involve Enhancement Level II practices in upper 27 linear feet to maintain and improve the stability of the channel. Currently the upper part of the existing channel is moderately stable with limited bank erosion and channel incision. The lower 125 linear feet will be restored as a Rosgen B4 stream type using appropriate riffle-pool and step-pool morphology with minimal meander planform geometry that will accommodate the valley slope and width. This approach will allow restoration of a stable channel form with appropriate bedform diversity, as well as improved ecological function through increased aquatic and terrestrial habitats. It will also allow the channel to be tied into Reach R4 which is being relocated. The design width/depth ratio for the channel will be similar to stable streams in this geologic setting. In-stream structures will be incorporated to control grade, dissipate flow energies, protect streambanks, and eliminate the potential for upstream channel incision. In-stream structures will include constructed riffles for grade control and aquatic habitat and log weirs for encouraging step-pool formation, bank stability, and bedform diversity. Additionally, existing stream substrate will be reused in the project structures where appropriate. R5 - Restoration R5 is begins at the confluence of R4 and R4b. The valley slope is approximately 2.0 percent until the slope flattens further downstream closer to the channel’s terminus at Kiger Road. R5 is severely incised with BHRs exceeding 3.0. During site investigations, the channel appears to have been historically manipulated as evidenced by spoil piles, remnant abandoned channels, and position in the valley. Work along R5 will involve Priority Level I Restoration by raising the bed elevation and reconnecting the stream with its adjacent floodplain. A majority of the channel will be constructed offline and the existing channel filled. This approach will promote more frequent over bank flooding in areas with hydric soils, thereby creating favorable conditions for wetland restoration (both rehabilitation and re-establishment). The reach will be restored as a Rosgen C4 stream type using appropriate riffle-pool morphology with a conservative meander planform geometry accommodates the valley slope (~1.9 percent) and widths. This approach will allow restoration of a stable channel form with appropriate bedform diversity, as well as improved ecological function through increased aquatic and terrestrial habitats. The design width/depth ratio will range from 10-14 which is similar to stable streams in this geologic setting. In-stream structures will be incorporated to control grade, dissipate flow energies, protect streambanks, and eliminate the potential for upstream channel incision. In-stream structures will include constructed riffles for grade control and aquatic habitat, log j-hook vanes, log vanes, and log and rock weirs for encouraging step-pool formation, bank stability, and bedform diversity. Additionally, existing stream substrate will be harvested and reused in the project structures where appropriate. Bioengineering techniques such as geolifts, toe Water & Land Solutions Horne Creek Tributaries Mitigation Project Page 35 DMS Project #100026 wood, brush layers, and live stakes will also be used to protect streambanks and promote woody vegetation growth along the streambanks. Riparian buffers in excess of 30 feet will be restored and protected along the entire length of R5 except for a section at the downstream project terminus. The reduced buffer width at the downstream project end is the result of conflicts with an adjacent road ROW. Any mature trees or significant native vegetation will be protected and incorporated into the design. Permanent fencing will be installed to exclude livestock and reduce sediment and nutrient inputs. A permanent 20-foot culverted crossing will be installed to allow for landowner access between pastures. The existing unstable channel will be filled to an elevation sufficient to connect the new bankfull channel to its historic floodplain or an excavated floodplain using suitable fill material from the newly restored channel and remnant spoil piles. Shallow floodplain pools will be created in depressional areas to provide habitat diversity, temporary sediment storage and improved treatment of overland flows. These proposed restoration activities will provide the maximum possible functional uplift. Any exotic species vegetation will be removed in this area and native riparian species vegetation will be planted in the resulting disturbed areas. 6.3 Reference Reach Selection The morphologic data obtained from reference reach surveys can be a valuable tool for comparison and used as a template for analog design of a stable stream in a similar valley type with similar bed material. To extract the morphological relationships observed in a stable system, dimensionless ratios are developed from the surveyed reference reach. These ratios can be applied to a stream design to allow the designer to ‘mimic’ the natural, stable form of the target channel type. While reference reach data can be a useful aid in analog design, they are not always necessary and can have limitations in smaller stream systems (Hey, 2006). The flow patterns and channel formation for many reference reach quality streams are often controlled by slope, bed material, drainage areas and larger trees and/or other deep-rooted vegetation. Some meander geometry parameters, such as radius of curvature, are particularly affected by vegetation control. Pattern ratios observed in reference reaches may not be applicable or are often adjusted in the design criteria to create more conservative designs that are less likely to erode after construction, before the permanent vegetation is established. Often the best reference data is from adjacent stable stream reaches or reaches within the same watershed. For comparison purposes, WLS selected local reference reaches in the same and nearby watersheds and compared them with composite reference data. The reference reach data set represents small “Rural Piedmont Streams,” and falls within the same climatic, hydrophysiographic and ecological region as the project site. The data shown on Table 16 helped to determine how the stream system may have responded to changes within the watershed. Figure 10 shows the reference reach locations as compared to the project site. Water & Land Solutions Horne Creek Tributaries Mitigation Project Page 36 DMS Project #100026 Table 16. Reference Reach Data Comparison Parameter Local Reference Data Composite Reference Data SCP BF Stream Type (Rosgen) C4b B4 B4 C4 Bankfull Mean Velocity, Vbkf (ft/s) 6.9 5.4 4.0 - 6.0 3.5 - 5.0 Width to Depth Ratio, W/D (ft/ft) 18.4 68 12.0 – 18.0 5.0 – 12.0 Entrenchment Ratio, Wfpa/Wbkf (ft/ft) 3.7 1.7 >2.2 >2.2 Riffle Max Depth Ratio, Dmax/Dbkf 2.3 3.0 1.2 - 1.4 1.1 - 1.4 Bank Height Ratio, Dtob/Dmax (ft/ft) 1.0 1.0 1.0 - 1.1 1.0 - 1.1 Meander Length Ratio, Lm/Wbkf - - - 7.0 - 12.0 Radius of Curvature Ratio, Rc/Wbkf - - - 1.2 – 2.0 Meander Width Ratio, Wblt/Wbkf - - - 3.0 - 8.0 Sinuosity, K 1.10 1.13 1.1 – 1.2 1.2 - 1.6 Valley Slope, Sval (ft/ft) 0.0142 0.0317 0.02 – 0.03 0.005 – 0.150 Channel Slope, Schan (ft/ft) 0.0123 0.028 --- --- Pool Max Depth Ratio, Dmaxpool/Dbkf - - 2.0 – 3.5 2.0 – 3.5 Pool Width Ratio, Wpool/Wbkf - - 1.1 – 1.5 0.8 – 1.2 Pool-Pool Spacing Ratio, Lps/Wbkf - - 1.5 – 5.0 4.0 - 7.0 Note 1: Composite reference reach values and ratios were compared using stable stream restoration projects surveyed and monitored in NC as illustrated in the Natural Channel Design Checklist (Harman, 2011). Note 2: Local reference reach data was collected at Shoals Community Park (SCP) and Brown Farms (BF) sites respectively. 6.4 Flow Regime Extensive research demonstrates that a wide range of flows are essential to maintain stable and high functioning habitat across ecological systems. The flow regime has been identified as the primary factor in sustaining the ecological integrity of riparian systems (Poff et al. 1997) and is a key variable in determining the abundance, distribution, and evolution of aquatic and riparian species (Schlosser 1985, Resh et al. 1988, Power et al. 1995, Doyle et al. 2005). The ecological significance of variable stream flows is more relative to flow duration, not necessarily just the flow recurrence interval. Seasonal flow variations correlate to biological relationships and habitat response. The flow conditions can generally be categorized as low flow, channel-forming flow, or flood flows, each with specific ecological significance (Postel and Richter, 2003). A majority of stream miles (>80 percent) in North Carolina are classified as headwater streams (drainage area <3.9 mi2), however, less than 10 percent of the 284 USGS stream gages in North Carolina are located on headwater streams (EFSAB, 2013). WLS recognizes the importance of these stream flow variables and the ecological role they play in supporting high functioning headwater steam and wetland systems. As such, flow monitoring will be conducted to demonstrate that the restored headwater stream systems exhibit seasonal base flow during a year with normal rainfall conditions. The stream surface flow documentation methods are further described in Section 8.2. Table 17 summarizes the basic flow levels and ecological roles the restoration design will provide after project implementation. Water & Land Solutions Horne Creek Tributaries Mitigation Project Page 37 DMS Project #100026 Table 17. Flow Level and Ecological Role Low Flow (Base Flow): occurs most frequently/seasonally -Provide year-round habitat for aquatic organisms (drying/inundation pattern) -Maintain suitable conditions for water temperature and dissolved oxygen -Provide water source for riparian plants and animals -Enable movement through stream corridor and refuge from predators -Support hyporheic functions and aquatic organisms Channel-forming Flow: infrequent, flow duration of a few days per year -Shape and maintain physical stream channel form -Create and maintain pools, in-stream and refuge habitat -Redistribute and sort fine and coarse sediments -Reduce encroachment of vegetation in channel and establishment of exotic species -Maintain water quality by flushing pollutants -Maintain hyporheic connection by mobilizing bed and fine material -Create in-channel bars for seed colonization of native riparian plants Flood Flow: very infrequent, flow duration of a few days per decade or century -Deposition of fine sediment and nutrients on floodplain -Maintain diversity, function, and health of riparian floodplain vegetation -Create streamside habitat, new channels, sloughs, and off-channel rearing habitat through lateral channel migration and avulsion -Recharge floodplain and storage processes -Recruitment of native wood and organic material into channel 6.4.1 Bankfull Stage and Discharge Bankfull stage and its corresponding discharge are the primary variables used to develop a natural stable channel design. However, the correct identification of the bankfull stage in the field was difficult and can also be subjective (Williams, 1978; Knighton, 1988; and Johnson and Heil, 1996). Numerous definitions exist of bankfull stage and methods for its identification in the field (Wolman and Leopold, 1957; Nixon, 1959; Schumm, 1960; Kilpatrick and Barnes, 1964; and Williams, 1978). The identification of bankfull stage in the humid Southeast can be especially challenging because of dense understory vegetation and extensive channel modification and subsequent adjustment in channel morphology. It is generally understood that bankfull stage corresponds with the discharge that fills a channel to the elevation of the active floodplain and represents a breakpoint between processes of channel formation and floodplain development. The bankfull discharge, which also corresponds with the dominant discharge or effective discharge, is the flow that moves the most sediment over time in stable alluvial channels. Field indicators include the back of point bars, significant breaks in slope, changes in vegetation, the highest scour line, or the top of the streambank (Leopold, 1994). The most consistent bankfull indicators for streams in the Piedmont of North Carolina are the backs of point bars, breaks in slope at the front of flat bankfull benches, or the top of the streambanks (Harman et al., 1999). Upon completion of the field survey and geomorphic assessment, accurate identification of bankfull stage could not be made in all reach sections throughout the site due to incised and impaired channel conditions. Although some field indicators were apparent in segments with lower streambank heights and discernible scour features, the reliability of the indicators was inconsistent due to the altered condition of the stream channels. For this reason, the bankfull stage and discharge were estimated using published regional curve information. Water & Land Solutions Horne Creek Tributaries Mitigation Project Page 38 DMS Project #100026 6.4.2 Regional Curve Comparison Regional curves developed by Dunne and Leopold (1978) relate bankfull channel dimensions to drainage area and are based on the channel forming discharge theory, which states that one unique flow can yield the same channel morphology as the full range of flows. A primary purpose for developing regional curves is to aid in identifying bankfull stage and dimension in un-gaged watersheds, as well as to help predict the bankfull dimension and discharge for natural channel designs (Rosgen, 1994). Gage station analyses throughout the United States have shown that the bankfull discharge has an average return interval of 1.5 years or 66.7% annual exceedance probability on the maximum annual series (Dunne and Leopold, 1978; Leopold, 1994). Hydraulic geometry relationships are empirically derived and can be developed for a specific river or extrapolated to a watershed in the same physiographic region with similar rainfall/runoff relationships (FISRWG, 1998). Published and unpublished watershed specific bankfull regional curves are available for a range of stream types and physiographic provinces. The NC Rural Piedmont Regional Curve (Harman et al., 1999) and unpublished NC Rural Piedmont Regional Curve developed by the Natural Resources Conservation Service (NRCS, Walker, private communication, 2015) were used for comparison when estimating bankfull discharge. The NC Rural Piedmont Regional Curve and bankfull hydraulic geometry equations are shown in Table 18. Table 18. North Carolina Rural Piedmont Regional Curve Equations NC Rural Piedmont Regional Curve Equations (Unpublished Revised NC Rural Piedmont Regional Curve (NRCS, 2015) NC Rural Piedmont Regional Curve Equations (Published Harman et al., 1999) Qbkf = 55.31 Aw 0.79 R2=0.97 Qbkf = 89.04 Aw 0.72 R2=0.91 Abkf = 19.23 Aw 0.65 R2=0.97 Abkf = 21.43 Aw 0.68 R2=0.95 Wbkf = 17.41 Aw 0.37 R2=0.79 Wbkf = 11.89 Aw 0.43 R2=0.81 Dbkf = 1.09 Aw 0.29 R2=0.80 Dbkf = 1.50 Aw 0.32 R2=0.88 It’s important to note these tributaries are classified as first order streams, and generally smaller headwater streams can be poorly represented on the regional curves. Based on our experience, the published NC Rural Piedmont Regional Curve Equations can slightly overestimate discharge and channel dimensions for smaller ungaged streams, such as those present at this site. Furthermore, estimating bankfull parameters subjectively rather than using deterministic values may encourage designers to make decisions on a range of values and beliefs that the bankfull depths must inherently be within that range (Johnson and Heil, 1996). WLS has implemented numerous projects in ungaged drainages in the piedmont hydrophysiographic province of North Carolina, including nearby projects in Surry and surrounding counties, and has developed “mini-curves” specific to these projects. The data set on these small stream curves help reduce uncertainty by providing additional reference points and supporting evidence for the selection of bankfull indicators that produce slightly smaller dimensions and flow rates than the published regional curve data set. Channel slope, valley setting, channel geometry, and sediment supply, as well as information from the USGS regression and Manning’s equations were all considered during examination of the field data. Water & Land Solutions Horne Creek Tributaries Mitigation Project Page 39 DMS Project #100026 The estimated bankfull discharges and surveyed cross-sectional areas at the top of bank were plotted on the NC Rural Piedmont Regional Curve and illustrated in Appendix 2. 6.4.3 Channel Forming Discharge A hydrologic analysis was completed to estimate and validate the design discharge and channel geometry required to provide more frequent overbank flows and floodplain inundation. WLS used multiple methods for evaluating the bankfull stage and dominant discharge for the project reaches. Cross-sections were identified and surveyed to represent reach-wide conditions. Additional bankfull estimation methods, such as the commonly accepted Manning’s equation, were compared to help interpret and adjust field observations to select the appropriate design criteria and justification for the design approach. The bankfull flows in gaged watersheds within the NC Rural Piedmont study documented return intervals (RI) that ranges from 1.1 to 1.8, with a mean of 1.4 years (Harman et al, 1999). WLS also compared the 2- year flow frequency using the published USGS regression equation for small rural streams (DA ≤3 mi2) within the piedmont hydrologic area of North Carolina (USGS, 2014). As expected, these values fall slightly above the published bankfull discharge, but were extrapolated to represent a wider range of flows. WLS then compared lower flow frequencies in the 1.0-yr, 1.2-yr, and 1.5-yr RI range versus survey data, field observations, and HEC-RAS 2D model outputs (See Appendix 2). It should be noted that this best fit approach does not always match the dataset, since it falls at the low end of the curve. Therefore, caution should be used when comparing these lower RIs with additional data sets. Using the rationale described above, Table 19 provides the bankfull discharge analyses and comparisons based on the rural piedmont regional curves, the Manning’s equation discharges calculated from the representative cross-section geometry for existing reaches, USGS regional regression equations, and the design discharge estimated based on the proposed design cross-sections for all project reaches. Water & Land Solutions Horne Creek Tributaries Mitigation Project Page 40 DMS Project #100026 Table 19. Design Discharge Analysis Summary Project Reach Designation Watershed Drainage Area (Ac) Published NC Rural Piedmont Regional Curve (cfs) 1 Unpublished NC Rural Piedmont Regional Curve (cfs) 2 Manning’s Equation (cfs) 3 USGS Regression Equation for 2-year Recurrence Interval (cfs) 4 USGS Regression Equation for 1.5- year Recurrence Interval (cfs) 5 USGS Regression Equation for 1.2- year Recurrence Interval (cfs) 5 Design Discharge Estimate (cfs) R1 38 12.2 5.7 6.6 22.5 19.0 15.9 12.0 R2 41 13.0 6.2 11.4 24.1 20.1 16.8 12.0 R3 29 10.3 4.7 8.6 18.9 16.1 13.6 10.0 R4a 29 10.1 4.6 7.9 18.7 16.0 13.5 10.0 R4b 1.7 1.3 0.5 4.5 2.5 2.4 2.2 3.0 R4 83 21.5 10.9 19.4 39.7 31.7 25.6 22.0 R5 166 35.2 19.0 33.0 64.8 49.3 38.4 27.0 Note 1: Published NC Piedmont Regional Curve (Harman et al., 1999). Note 2: Unpublished Revised NC Rural Piedmont Regional Curve developed by NRCS (A. Walker personal communication, 2015). Note 3: Bankfull discharge estimates vary based on Manning’s Equation for the representative riffle cross-sections. Bankfull stage roughness estimates (n-values) ranged from approximately 0.047 to 0.059 based on channel slopes, depth, bed material size, and vegetation influence. Note 4: USGS rural regression equation for 2-year flood recurrence interval, Q2 =163(DA)^0.7089*10^(0.0133*(IMPNLCD06)) for small rural streams (USGS, 2011) Note 5: NC USGS rural regression equation extrapolated for 1.2- and 1.5-year flood recurrence interval (USGS, 2011) After considering these estimation methods and results (geometry measurements, regional curves, flow frequency and USGS regional regression equations), WLS estimated the design discharge using values between the published NC Rural Piedmont Regional Curve and Manning’s equation to select the appropriate design dimensions and flows rates that best correspond to the design channel that will convey the 1.2-yr to 1.5-yr RI. 6.4.4 Channel Stability and Sediment Transport Analysis The sediment transport capacity and competency (entrainment) was analyzed to help predict stable channel design conditions and discharges for the project reaches. Sediment samples were collected to obtain a sediment size distribution, determine dimensionless critical shear stress, and calculate/predict corresponding slope and depth required to move the largest particle class size (D100). The sample locations are shown on Figure 9. The sieve data indicate that the dominant bed material in the stream reaches is medium gravel under current conditions, with a few localized sections of coarser cobble material and exposed bedrock. Table 20 illustrates boundary shear stress and stream power values under proposed design conditions for the project reaches. See Appendix 2 for sediment particle size distribution for the project reaches. Water & Land Solutions Horne Creek Tributaries Mitigation Project Page 41 DMS Project #100026 Table 20. Boundary Shear Stress and Stream Power Parameter R1 R2 R3 R4 R4a R4b R5 Channel Bottom Width (ft) 3.5 4.0 3.0 4.0 3.0 2.0 6.0 Channel Energy Slope (feet/ foot) 0.0341 0.0302 0.0464 0.0290 0.0205 0.0241 0.0201 Median Particle Size, D50 (mm) 15 24.7 16.6 23.1 10.0 2.0 19.6 Bankfull XSC Area (square feet) 2.89 2.75 2.25 5.20 2.25 0.83 7.20 Composite Mannings ‘n’ Value 0.040 0.053 0.050 0.055 0.035 0.033 0.049 Bankfull Width, W (feet) 7.0 6.0 6.0 9.0 6.0 3.5 10.0 Bankfull Depth, D (feet) 0.41 0.46 0.38 0.58 0.38 0.24 0.72 Hydraulic Radius, R (feet) 0.37 0.40 0.33 0.51 0.39 0.31 0.68 Bankfull Velocity, V (cfs) 4.2 4.0 4.4 4.2 4.4 3.6 3.8 Bankfull Discharge, Q (cfs) 12.0 12.0 10.0 22.0 10.0 3.0 27.0 Boundary Shear Stress, τ (lbs/ft2) 0.79 0.75 0.97 0.93 0.42 0.31 0.79 Stream Power (W/m2) 47.6 43.3 62.4 57.1 27.6 16.6 43.1 As a design consideration, portions of the bed material may contain particle sizes larger than the D84 to achieve vertical stability in steeper sections immediately after construction. The proposed channel slopes throughout the project reaches range from approximately 2.0% to over 4.0%. In general, sections with steeper slopes will be addressed by installing a combination of grade control structures such as log/rock riffles and log/boulders step pools in straighter segments. Incorporating these structures will prevent further channel degradation and embeddedness, promote natural scour and sediment storage, and increase bed/bank stability since shear stress and sediment entrainment are directly affected by factors such flow energy distribution and channel resistance. While it is predicted that the restoration and enhancement efforts will reduce stream bed and bank erosion, the channels must still adequately transport finer bedload material while maintaining vertical and lateral stability. A site-specific sediment rating curve and budget was not developed given the limited sediment supply and headwater position in the watershed. This detailed effort requires using on-site monitoring data from documented flow events within the project watershed. However, empirical relationships from stable streams were compared to published values and reference streams that have similar characteristics and boundary conditions such as slope, controlling vegetation and bedform morphology. Based on field observations within the project watershed, the streams receive most materials directly from streambank Water & Land Solutions Horne Creek Tributaries Mitigation Project Page 42 DMS Project #100026 erosion with minimal contributions from the upper catchment area. This was evidenced by visual observations of a gravel/cobble lens approximately 2 to 3 feet below the existing top of bank along portions of the degraded channels. Further field investigations confirmed that the sediment supply from project reaches is transported during larger storm events due to small headwater drainage, and influences from vegetation cover. 6.5 Wetland Design Approach While it is understood that wetland mitigation credits are not contracted nor proposed for this project, the project area will benefit from the restoration of riparian wetland hydrology and improved ecological function along the floodplains of the project stream reaches where Priority Level I Restoration approaches are implemented. The project site is located in an agricultural setting in the Upper Piedmont, within a Priority Sub-watershed as described in the Yadkin-Pee Dee 09 RBWP River Basin Watershed Restoration Plan, where smaller headwater stream and wetland restoration projects are highly recommended and prioritized. Based on field investigations, soil conditions are favorable for rehabilitating areas of significantly degraded existing riparian wetlands along R4a and R4b. The verified wetland areas are shown on Figure 6 and total approximately 0.35 acres. Riparian wetland rehabilitation is expected to occur in areas of drained hydric soils by improving current hydrologic conditions and overbank flooding across the historic floodplain as a direct result of implementing Priority Level I Restoration, removing cattle from the riparian area which will improve soil structure, and restoration of the riparian buffer. Additionally, the wetland restoration approach will improve the hyporheic zone interaction and both biological and chemical processes associated with aquatic functions of the stream. These activities, including minimal grading and blending of natural microtopography, will provide significant functional uplift across the project area. 6.6 Riparian Buffer Design Approach One of the primary project goals includes restoring riparian buffer functions and corridor habitat. An objective identified in support of this goal includes planting to re-establish a native species vegetation riparian buffer corridor along the entire length of the project reaches. This objective will be met by establishing riparian buffers which extend a minimum of 30 feet from the top of the streambanks along each of the project stream reaches, as well as permanently protecting those buffers with a conservation easement. For project stream reaches proposed for restoration and enhancement, the riparian buffers will be restored through reforestation. Many of the proposed riparian buffer widths within the conservation easement are greater than 30 feet along one or both streambanks to provide additional functional uplift potential, such as encompassing adjacent wetland areas. The riparian buffer zone for the project includes the streambanks, floodplain, riparian wetland, and upland transitional areas. The proposed planting boundaries are shown on the revegetation plans in Appendix 1. The conservation easement areas also may include areas outside of the riparian buffer zone that will be revegetated, including areas that lack vegetation species diversity, or areas otherwise disturbed or adversely impacted by construction. Proposed plantings will be conducted using native species bare-root trees and shrubs, live stakes, and seedlings. Proposed plantings will predominantly consist of bare root vegetation and will generally be Water & Land Solutions Horne Creek Tributaries Mitigation Project Page 43 DMS Project #100026 planted at a total target density of 680 stems per acre. This planting density has proven successful with the reforestation of past completed mitigation projects, based on successful regulatory project closeout, and including the current USACE regulatory guidelines requiring levels of woody stem survival throughout the monitoring period, with a MY7 final survival rate of 210 stems per acre. WLS recognizes that riparian buffer conditions at mature reference sites are not reflected at planted or successional buffer sites until the woody species being to establish and compete with herbaceous vegetation. To account for this, we will utilize a successful riparian buffer planting strategy that includes a combination of overstory, or canopy, and understory species. WLS will also consider the supplemental planting of larger and older planting stock to modify species density and type, based on vegetation monitoring results after the first few growing seasons. This consideration will be utilized particularly to increase the rate of buffer establishment and buffer species variety, as well as to decrease the vegetation maintenance costs. An example might include selective supplemental planting of older mast producing species as potted stock in later years for increased survivability. The site planting strategy also includes early successional, as well as climax species. The vegetation selections will be mixed throughout the project planting areas so that the early successional species will give way to climax species as they mature over time. The early successional species which have proven successful include river birch (Betula nigra), green ash (Fraxinus pennsylvanica), and American sycamore (Platanus occidentalis). The climax species that have proven successful include oaks (Quercus spp.) and tulip-tree (Liriodendron tulipifera). The understory and shrub layer species are all considered to be climax species in the riparian buffer community. 6.6.1 Proposed Vegetation Planting The proposed plant selection will help to establish a natural vegetation community that will include appropriate strata (canopy, understory, shrub, and herbaceous species) based on an appropriate reference community. Schafale and Weakley’s (1990) guidance on vegetation communities for Piedmont Bottomland Forest (mixed riparian community) and Dry-Mesic Oak-Hickory Forest (Piedmont Subtype), the USACE Wetland Research Program (WRP) Technical Note VN-RS-4.1 (1997), as well as existing mature species identified throughout the project area, were referenced during the development of riparian buffer and adjacent riparian wetland plants for the site. The proposed natural vegetation community will include appropriate strata (canopy, understory, shrub, and herbaceous species) based on the appropriate reference community. Within each of the four strata, a variety of species will be planted to ensure an appropriate and diverse plant community. Tree species selected for restoration and enhancement areas will be weak to tolerant of flooding. Weakly tolerant species can survive and grow in areas where the soil is saturated or flooded for relatively short periods of time. Moderately tolerant species can survive in soils that are saturated or flooded for several months during the growing season. Flood tolerant species can survive on sites in which the soil is saturated or flooded for extended periods during the growing season (WRP, 1997). Species proposed for revegetation planting are presented in Table 21. Water & Land Solutions Horne Creek Tributaries Mitigation Project Page 44 DMS Project #100026 Table 21. Proposed Riparian Buffer Bare Root and Live Stake Plantings Botanical Name Common Name % Proposed for Planting by Species Wetland Tolerance Riparian Buffer Bare Root Plantings – Overstory (Proposed 8’ x 8’ Planting Spacing @ 680 Stems/Acre) Betula nigra River birch 7% FACW Tilia americana Basswood 7% FACU Platanus occidentalis American sycamore 7% FACW Nyssa sylvatica Black gum 6% FAC Liriodendron tulipifera Tulip-poplar 7% FACU Quercus alba White oak 6% FACU Quercus alba Northern red oak 3% FACU Fraxinus pennsylvanica Green ash 3% FACW Riparian Buffer Bare Root Plantings – Understory (Proposed 8’ x 8’ Planting Spacing @ 680 Stems/Acre) Diospyros virginiana Persimmon 7% FAC Amelanchier arborea Common serviceberry 5% FAC Magnolia tripetala Umbrella magnolia 6% FACU Carpinus caroliniana American hornbeam 6% FAC Hamamelis virginiana Witch-hazel 6% FACU Asimina triloba Pawpaw 6% FAC Lindera benzoin Spicebush 6% FACW Alnus serrulata Hazel alder 6% OBL Corylus americana Hazelnut 6% FACU Riparian Buffer Live Stake Plantings – Streambanks (Proposed 2’-3’ Spacing @ Meander Bends and 6’-8’ Spacing @ Riffle Sections) Sambucus canadensis Elderberry 20% FACW Salix sericea Silky Willow 30% OBL Salix nigra Black Willow 10% OBL Cornus amomum Silky Dogwood 40% FACW Note: Final species selection may change due to refinement or availability at the time of planting. Species substitutions will be coordinated between WLS and planting contractor prior to the procurement of plant stock. 6.6.2 Planting Materials and Methods Planting will be conducted during the dormant season, with all trees installed between Mid-November and early March if possible. However, trees must be installed by the end of May to have the first year of monitoring in that year. Observations will be made during construction of the site regarding the relative wetness of areas to be planted as compared to the revegetation plan. The final planting zone limits may be modified based on these observations and comparisons, and the final selection of the location of the planted species will be matched according the species wetness tolerance and the anticipated wetness of the planting area. It should be noted that smaller tree species planted in the understory, such as American hornbeam (Carpinus caroliniana), will unlikely meet the height targets for tree species after seven years. Plant stock delivery, handling, and installation procedures will be coordinated and scheduled to ensure that woody vegetation can be planted within two days of being delivered to the project site. Soils at the site areas proposed for planting will be prepared by sufficiently loosening prior to planting. Bare root Water & Land Solutions Horne Creek Tributaries Mitigation Project Page 45 DMS Project #100026 seedlings will be manually planted using a dibble bar, mattock, planting bar, or other approved method. Planting holes prepared for the bare root seedlings will be sufficiently deep to allow the roots to spread outward and downward without “J-rooting.” Soil will be loosely re-compacted around each planting, as the last step, to prevent roots from drying out. Live Staking and Live Branch Cuttings: Where live staking is proposed, live stakes will typically be installed at a minimum of 40 stakes per 1,000 square feet and the stakes will be spaced approximately two to three feet apart in meander bends and six to eight feet apart in the riffle sections, using a triangular spacing pattern along the streambanks, between the toe of the streambank and bankfull elevation. When bioengineering is proposed, live branch cutting bundles comprised of similar live stake species, shall be installed at five linear feet per bundle approximately two to three branches thick. The basal ends of the live branch cuttings, or whips, shall contact the back of the excavated slope and shall extend six inches from the slope face. Permanent Seeding: Permanent seed mixtures of native species herbaceous vegetation and temporary herbaceous vegetation seed mixtures will be applied to all disturbed areas of the project site. The individual species were specifically selected due to their native occurrence in Surry County, NC. Temporary and permanent seeding will be conducted simultaneously at all disturbed areas of the site during construction and will conducted with mechanical broadcast spreaders. Simultaneous permanent and temporary seeding activities helps to ensure rapid growth and establishment of herbaceous ground cover and promotes soil stability and riparian habitat uplift. Table 22 lists the proposed species, mixtures, and application rates for permanent seeding. The vegetation species proposed for permanent seeding are deep-rooted and have been shown to proliferate along restored stream channels, providing long-term stability. The vegetation species proposed for temporary seeding germinate quickly to swiftly establish vegetative ground cover and thus, short term stability. The permanent seed mixture proposed is suitable for streambank, floodplain, and adjacent riparian wetland areas, and the upland transitional areas in the riparian buffer. Beyond the riparian buffer areas, temporary seeding will also be applied to all other disturbed areas of the site that are susceptible to erosion. These areas include constructed streambanks, access roads, side slopes, and spoil piles. If temporary seeding is applied from November through April, rye grain will be used and applied at a rate of 130 pounds per acre. If applied from May through October, temporary seeding will consist of browntop millet, applied at a rate of 40 pounds per acre. Water & Land Solutions Horne Creek Tributaries Mitigation Project Page 46 DMS Project #100026 Table 22. Proposed Riparian Buffer Permanent Seeding Botanical Name Common Name % Proposed for Planting by Species Seeding Rate (lb/acre) Wetland Tolerance Andropogon gerardii Big blue stem 10% 1.50 FAC Dichanthelium clandestinum Deer tongue 15% 1.50 FACW Carex intumescens Bladder sedge 10% 2.25 FACW Chasmanthium latifolium River oats 5% 1.50 FACU Elymus virginicus Virginia wild rye 15% 1.50 FAC Juncus effusus Soft rush 10% 2.25 FACW+ Sisyrinchium angustifolium Blue-eyed grass 5% 1.50 FAC+ Eutrochium fistulosum Joe pye weed 5% 0.75 FACW Schizachyrium scoparium Little blue stem 10% 0.75 FACU Tripsacum dactyloides Eastern gamagrass 5% 0.75 FAC+ Sorghastrum nutans Indiangrass 10% 0.75 FACU Note: Final species selection may change due to refinement or availability at the time of planting. Species substitutions will be coordinated between WLS and planting contractor prior to the procurement of seeding stock. Invasive species vegetation, such as Chinese privet, multiflora rose, and microstegium (Microstegium vimineum), will be treated to allow native plants to become established within the conservation easement. Larger native tree species will be preserved and harvested woody material will be utilized to provide bank stabilization cover and/or nesting habitat. Hardwood species will be planted to provide the appropriate vegetation for the restored riparian buffer areas. During the project implementation, invasive species exotic vegetation will be treated both to control its presence and reduce its spread within the conservation easement areas. These efforts will aid in the establishment of native riparian vegetation species within the restored riparian buffer areas. 6.7 Agricultural Best Management Practices WLS proposes various agricultural best management practices (BMPs) as practices or measures to be implemented as part of a “project cluster” approach. When combined with stream and riparian buffer, agricultural BMPs can be effective at reducing pollutants, particularly sediment loadings, and therefore provide additional ecological uplift to the project. The agricultural BMPs that are best suited at this project site include no till planting, grassed waterways, restricted grazing, livestock fencing, and alternate watering sources for livestock. Currently, the landowner actively employs the use of grassed waterways and restricted or rotational grazing. Therefore, livestock exclusion fencing, providing alternate watering sources for livestock, and the addition of treatment basins are proposed for this project. WLS will provide a permanent watering source for livestock at the project site through the installation of livestock drinkers and associated watering infrastructure. The livestock watering stations will be designed and located in direct coordination with the landowner and the Surry County Soil and Water Conservation District and/or NRCS staff to ensure that adequate watering facilities are provided. The watering stations will be located outside of the conservation easement boundaries and well away from the restored stream corridors. Water & Land Solutions Horne Creek Tributaries Mitigation Project Page 47 DMS Project #100026 As previously discussed, direct livestock access and the resulting sedimentation, erosion, and pollutants are one of the primary stressors for the project site. Permanent livestock exclusion from the applicable conservation easement areas will be provided with fencing, installed to NRCS technical standards. The permanent fencing will be installed to maximize the length of straight fence lines and minimize the number of fence corners. At the active culverted stream crossings, the permanent livestock exclusion fencing will be installed along both the upstream and downstream limits of the conservation easement “alley” or break to prevent livestock from accessing the stream from the actual crossing. The locations of the proposed stream crossings are shown on Figure 9. The proposed conservation easement is broken at each of these proposed crossing locations to best facilitate the landowner’s use of the property. The proposed stream crossings will be culverted and the pipes have been sized to pass the 10-year design storm to ensure proper hydraulic function and stream stability, as well as to encourage aquatic passage. 6.8 Water Quality Treatment Features Water quality treatment features in the form of small basins or impoundments designed to capture and treat runoff from the surrounding active cattle pastures and/or agricultural fields are proposed in multiple locations adjacent to the restored riparian buffer corridor. These basins will increase infiltration and groundwater recharge, diffuse flow energies, and allow nutrient uptake within the extended riparian buffer area. The water quality improvement features will be fenced out, such that they are connected to the easement fencing system, to prevent livestock intrusion and will be included in the conservation easement. These features are sized to treat storage volumes, which have been calculated by comparing the SCS Curve Number Method and Simple Method. The features are intended to function most similar to a stormwater wetland to temporarily store surface runoff in shallow pools that support emergent and native riparian vegetation. They will be designed and constructed such that they do not require any long- term maintenance and will be sited immediately outside of the conservation easement boundary to allow for modifications should that be desired. The treatment basins will be excavated along non-jurisdictional flat or depressional areas where ephemeral drainages intersect with the proposed restored stream corridor. The areas will be improved by grading flatter side slopes (>3H:1V) and planting appropriate wetland vegetation as outlined in Section 6.5.1. Over time, as vegetation becomes established, the areas will function as shallow wetland complexes or depressions. The outlets will be constructed with suitable material and stabilized with permanent vegetation or stone that will prevent headcut migration or erosion into the newly constructed areas. Each of the basins have been designed with low-maintenance weir outlets. The basins will be planted and located outside the conservation easement area. This strategy will allow these features to function properly with minimal risk and without long term maintenance requirements. A stable outlet channel will be constructed to deliver runoff to the receiving restored stream reach. 6.9 Site Construction Methods 6.9.1 Site Grading and Construction Elements Following initial evaluation of the design criteria, detailed refinements were made to the design plans in the field to accommodate the existing valley characteristics, vegetation influences and channel morphology. This was done to minimize unnecessary disturbance of the riparian area, and to allow for Water & Land Solutions Horne Creek Tributaries Mitigation Project Page 48 DMS Project #100026 some natural channel adjustments following construction. The design plans and construction elements have been tailored to produce a cost and resource efficient design that is constructible, using a level of detail that corresponds to the tools of construction. A general construction sequence is included on the project design plan sheets located in Appendix 1. Much of the grading across the site will be conducted within the existing riparian corridor. The restored streams will be excavated within the existing headwater valley. Suitable fill material will be generated from new channel excavation and adjacent upland areas and hauled to ditch fill/plugs or stockpile locations as necessary. Portions of the existing, unstable channels will be partially to completely filled in along their length using compactable material excavated from construction of the restored channels. Wetland and floodplain grading activities will focus on restoring pre-disturbance valley topography by removing field crowns, overburden/spoil, surface drains, and legacy pond sediments that were imposed during conversion of the land for agriculture. In general, floodplain grading activities will be minor, with the primary goal of soil scarification, creating depressional areas, water quality and habitat features, and microtopographic crenulations by filling the drainage features on the site back to natural ground elevations (Scherrer, 1999). Any excess material not used for ditch plugging or suitable as a soil base for vegetation will be spread across upland areas outside of the easement boundary and jurisdictional WOTUS. 6.9.2 In-stream Structures and Site Improvement Features A variety of in-stream structures are proposed for the project. Structures including log vanes, constructed log riffles, constructed stone riffles, grade control log j-hook vanes, log vanes, rootwads, log weirs, stone and log step pools, and log step pools. Geolifts with toe wood, various other bioengineering measures, and native species vegetation transplants will be used to stabilize the newly-restored stream and improve bedform diversity and habitat functions. All in-stream structures will be constructed from native materials such as hardwood trees, trunks/logs, brush/branches, and gravel stone materials. Native woody debris will be harvested on-site during the project construction and incorporated into the stream channel restoration whenever possible. To ensure sustainability of these structures, WLS will use design and construction methods that have proven successful on numerous past projects in the same geographic region and similar site conditions. Floodplain features such as small sloughs, meander scars, vernal pools, and tree throws are commonly found in natural riparian systems. These features will be appropriately added to provide additional habitat and serve as water storage and sediment sinks throughout the restoration corridor. When appropriate, these depressional features will be added adjacent to abandoned channel sections and/or strategic locations throughout the floodplain to provide habitat and serve as water storage and sediment sinks throughout the corridor (Metcalf, 2004). 6.9.3 Construction Feasibility WLS has field verified that the project site has adequate, viable construction access, staging, and stockpile areas. Physical constraints or barriers, such as stream crossings or ROWs, account for only a small percentage of the proposed total stream reach length within the project boundary. Existing site access points and features may be used for future access after the completion of construction. Any potential Water & Land Solutions Horne Creek Tributaries Mitigation Project Page 49 DMS Project #100026 impacts to existing wetland areas will be avoided whenever possible during construction. Only minimal, temporary impacts will be allowed when necessary for maximized permanent stream, wetland, and riparian buffer functional uplift. 7 Performance Standards The applied success criteria for the project will follow necessary performance standards and monitoring protocols presented in this mitigation plan, once approved, and are developed in compliance with the DMS Stream and Wetland Mitigation Plan Template Guidance, adopted August 2016, as well as the USACE Wilmington District Stream and Wetland Compensatory Mitigation Update issued in October 20016, and Compensatory Mitigation for Losses of Aquatic Resources; Final Rule, issued in 2008. In addition, the monitoring success criteria, practices, and corresponding reporting will follow the NCEEP’s Stream and Wetland Mitigation Monitoring Guidelines issued February 2014, the NCEEP As-built Baseline Monitoring Report Format, Data Requirements, and Content Guidance issued in February 2014, the NCEEP Annual Monitoring Report Format, Data Requirements, and Content Guidance, issued April, 2015, the NCEEP Closeout Report Template, Version 2.1, adopted March, 2015, and the NCEEP Closeout Template Guidance, Version 2.1, adopted February, 2015. Monitoring activities will be conducted for a period of seven (7) years with the final duration dependent upon performance trends toward achieving project goals and objectives. Specific success criteria components and evaluation methods are described below. 7.1 Streams Stream Hydrology: Four (4) separate bankfull events must be documented within the seven-year monitoring period. Two of the four bankfull events must occur in separate years. Otherwise, the stream monitoring will continue until all four bankfull events have been documented in separate years. In the event that less than four bankfull events occur during the monitoring period, release of these reserve credits is at the discretion of the NCIRT. Surface flow for intermittent streams will be documented using gages or automated data loggers. Stream Profiles, Vertical Stability, and Floodplain Access: Stream profiles, as a measure of vertical stability will be evaluated by looking at Bank Height Ratios (BHR) which is the streams ability to access its floodplains during bankfull events. In addition, observed bedforms should be consistent with those observed for channels of the design stream type(s). Vertical stability and floodplain access will both be evaluated by looking at Entrenchment Ratios (ER) which is lateral extent of flooding during bankfull. The ER shall be no less than 2.2 (1.4 for ‘B’ stream types) along the restored project stream reaches. This standard only applies to restored reaches of the channel where ERs were corrected through design and construction. Stream Horizontal Stability: Cross-sections will be used to document stability of stream dimension. There should be minimal change expected in post-restoration cross-sections. If measurable changes do occur, they should be evaluated to determine if the changes represent a movement toward a more unstable condition (e.g., downcutting, erosion) or a movement towards increased stability (e.g., settling, vegetation establishment, deposition along the streambanks, decrease in width/depth ratio). Cross-sections shall be classified using the Rosgen Stream Classification method and all monitored cross-sections should fall within the quantitative parameters defined for channels of the design stream type. In general, BHR and ER at any Water & Land Solutions Horne Creek Tributaries Mitigation Project Page 50 DMS Project #100026 measured riffle cross-section should not change by more than 10% from the baseline condition during any given monitoring interval. Streambed Material Condition and Stability: After construction, it anticipated that particle size distributions will migrate to those identified as appropriate for gravel dominated supply as part of the design process. Some fining of stream bed material may occur during the first few years after construction. However, long term trends are anticipated to demonstrate minimal change in the particle size distribution of the streambed materials, over time, given the current watershed conditions and future upstream sediment supply regime. Since the streams are predominantly gravel-bed systems with minimal sand, significant changes in particle size distribution are not expected. Jurisdictional Stream Flow: The restored stream systems must be classified as at least intermittent, and therefore must exhibit base flow for at least 30-days consecutive flow within a calendar year under normal rainfall conditions as described in Section 8.2.3. 7.2 Wetlands Wetland mitigation credits are not contracted or proposed for this project. Wetland mitigation performance standards are therefore not included in this section. 7.3 Vegetation Vegetative restoration success for the project during the intermediate monitoring years will be based the survival of at least 320, three-year-old planted trees per acre at the end of Year 3 of the monitoring period (MY3) and at least 260, five-year-old, planted trees per acre at the end of Year 5 of the monitoring period (MY5). The final vegetative restoration success criteria will be achieving a density of no less than 210, seven-year-old planted stems per acre in Year Seven of monitoring (MY7). In addition, planted trees in each vegetation plot must average 6 feet in height after MY5 and 8 feet in height at MY7 before closeout. 8 Monitoring Plan The proposed monitoring plan is intended to document the site improvements based on restoration potential, catchment health, ecological stressors and overall constraints. The measurement methods described below provide a connection between project goals and objectives, performance standards, and monitoring requirements to evaluate functional improvement. They specifically include: • What will be measured, • How measurements will be taken, • When measurements will be taken, • Where measurements will be taken. In accordance with the approved mitigation plan, the baseline monitoring document and as-built monitoring report documenting the stream and riparian buffer mitigation will be developed within 60 days of the completion of planting and monitoring device installation at the restored project site. In addition, a period of at least six months will separate the as-built baseline measurements and the first- Water & Land Solutions Horne Creek Tributaries Mitigation Project Page 51 DMS Project #100026 year monitoring measurements. The baseline monitoring document and as-built monitoring report will include all information required by the current DMS templates and guidance referenced above, including planimetric (plan view) and elevation (profile view) information, photographs, sampling plot locations, a description of initial vegetation species composition by community type, and location of monitoring stations. The report will include a list of the vegetation species planted, along with the associated planting densities. WLS will conduct mitigation performance monitoring based on these methods and will submit annual monitoring reports to DMS by December 31st of each monitoring year during which required monitoring is conducted. The annual monitoring reports will organize and present the information resulting from the methods described in detail below. The annual monitoring reports will provide a project data chronology for DMS to document the project status and trends, for population of DMS’s databases for analyses, for research purposes, and to assist in decision making regarding project close-out. Project success criteria must be met by the final monitoring year prior to project closeout, or monitoring will continue until unmet criteria are successfully met. Table 23 in Section 8.5 summarizes the monitoring methods and linkage between the goals, parameters, and expected functional lift outcomes. Figure 9 illustrates the pre- and post-construction monitoring feature types and location. 8.1 Visual Assessment Monitoring WLS will conduct visual assessments in support of mitigation performance monitoring. Visual assessments of all stream reaches will be conducted twice per monitoring year with at least five months in between each site visit for each of the seven years of monitoring. Photographs will be used to visually document system performance and any areas of concern related to streambank and bed stability, condition of in- stream structures, channel migration, active headcuts, live stake mortality, impacts from invasive plant species or animal browsing, easement boundary encroachments, cattle exclusion fence damage, and the general condition of pools and riffles. The monitoring activities will be summarized in DMS’s Visual Stream Morphology Stability Assessment Table and the Vegetation Conditions Assessment Table as well as a Current Conditions Plan View (CCPV) drawing formatted to DMS digital drawing requirements, which are used to document and quantify the visual assessment throughout the monitoring period. A series of photographs over time will be also be compared to subjectively evaluate channel aggradation (bar formations) or degradation, streambank erosion, successful maturation of riparian vegetation, and effectiveness of sedimentation and erosion control measures. More specifically, the longitudinal profile photos should indicate the absence of developing bars within the channel or excessive increase in channel depth, while lateral photos should not indicate excessive erosion or continuing degradation of the banks. The photographs will be taken from a height of approximately five feet to ensure that the same locations (and view directions) at the site are documented in each monitoring period and will be shown on a plan view map. The results of the visual monitoring assessments will be used to support the development of the annual monitoring document that provides the visual assessment metrics. 8.2 Stream Assessment Monitoring Based on the stream design approaches, different stream monitoring methods are proposed for the various project reaches. Hydrologic monitoring will be conducted for all project stream reaches. For Water & Land Solutions Horne Creek Tributaries Mitigation Project Page 52 DMS Project #100026 reaches that involve a combination of traditional Restoration (Rosgen Priority Level I and II) and Enhancement Level I (bed/bank stabilization) approaches, geomorphic monitoring methods that follow those recommended by the USACE Wilmington District Stream and Wetland Compensatory Mitigation Update, and NCEEP’s Stream and Wetland Mitigation Monitoring Guidelines, which are described below, will be employed to evaluate the effectiveness of the restoration practices. Visual monitoring will be conducted along these reaches as described herein. For project reaches involving an Enhancement Level II approach, monitoring efforts will focus primarily on visual inspections, photo documentation, and vegetation assessments, each as described herein. The monitoring of these project reaches will utilize the methods described under visual monitoring. Each of the proposed stream monitoring methods are described in detail below. 8.2.1 Hydrologic Monitoring The occurrence of the two required bankfull events (overbank flows) and the two required “geomorphically significant” flow events (Qgs=0.66Q2) within the monitoring period, along with floodplain access by flood flows, will be documented using crest gauges and automated photography. Four (4) separate bankfull events must be documented within the seven-year monitoring period. Two of the four bankfull events must occur in separate years. The crest gages will be installed on the floodplain of and across the dimension of the restored channels as needed for monitoring. The crest gages will record the watermark associated with the highest flood stage between monitoring site visits. The gages will be checked each time WLS staff conduct a site visit to determine if a bankfull and/or geomorphically significant flow event has occurred since the previous gage check. Corresponding photographs will be used to document the occurrence of debris lines and sediment deposition on the floodplain during monitoring site visits. This monitoring will help establish that the restoration objectives of restoring floodplain functions and promoting more natural flood processes are being met. 8.2.2 Geomorphic Monitoring Horizontal Pattern: A planimetric survey will be conducted for the entire length of restored channel immediately after construction to document as-built baseline conditions (Monitoring Year 0). The survey will be tied to a permanent benchmark and measurements will include thalweg, bankfull, and top of banks. The plan view measurements such as sinuosity, radius of curvature, meander width ratio will be taken on newly constructed meanders during baseline documentation (Monitoring Year 0) only. The described visual monitoring will also document any changes or excessive lateral movement in the plan view of the restored channel. The results of the planimetric survey should show that the restored horizontal geometry is consistent with intended design stream type. These measurements will demonstrate that the restored stream channel pattern provides more stable planform and associated features than the old channel, which provide improved aquatic habitat and geomorphic function, as per the restoration objectives. Longitudinal Profile: A longitudinal profile will be surveyed for the entire length of restored channel immediately after construction to document as-built baseline conditions for the first year of monitoring only. The survey will be tied to a permanent benchmark and measurements will include thalweg, water surface, bankfull, and top of low bank. Each of these measurements will be taken at the head of each feature (e.g., riffle, pool) and at the maximum pool depth. The longitudinal profile should show that the bedform features installed are consistent with intended design stream type. The longitudinal profiles will Water & Land Solutions Horne Creek Tributaries Mitigation Project Page 53 DMS Project #100026 not be taken during subsequent monitoring years unless vertical channel instability has been documented or remedial actions/repairs are deemed necessary. These measurements will demonstrate that the restored stream profile provides more bedform diversity than the old channel with multiple facet features (such as scour pools and riffles) that provide improved aquatic habitat, as per the restoration objectives. BHRs will be measured along each of the restored reaches using the results of the longitudinal profile. Horizontal Dimension: Permanent cross-sections will be installed and surveyed at an approximate rate of one cross-section per twenty (20) bankfull widths or an average distance interval (not to exceed 500 LF) of restored stream, with approximately ten (10) cross-sections located at riffles, and five (5) located at pools. Each cross-section will be monumented on both streambanks to establish the exact transect used and to facilitate repetition each year and easy comparison of year-to-year data. The cross-section surveys will occur in years 0 (as-built), 1, 2, 3, 5, and 7, and will include measurements of bankfull cross-sectional area (Abkf) at low bank height, Bank Height Ratio (BHR) and Entrenchment Ratio (ER). The monitoring survey will include points measured at all breaks in slope, including top of streambanks, bankfull, inner berm, edge of water, and thalweg, if the features are present. There should be minimal change in as-built cross-sections. Stable cross-sections will establish that the restoration goal of creating geomorphically stable stream conditions has been met. If changes do take place, they will be documented in the survey data and evaluated to determine if they represent a movement toward a more unstable condition (e.g., down-cutting or erosion) or a movement toward increased stability (e.g., settling, vegetative changes, deposition along the streambanks, or decrease in width-to-depth ratio). Using the Rosgen Stream Classification System, all monitored cross-sections should fall within the quantitative parameters defined for channels of the design stream type. Given the smaller channel sizes and meander geometry of the proposed steams, bank pin arrays will not be installed unless monitoring results indicate active lateral erosion at cross-sections occurring in meander bends, typically at pools. Reference photo transects will be taken at each permanent cross-section. Lateral photos should not indicate excessive erosion or continuing degradation of the streambanks. Photographs will be taken of both streambanks at each cross-section. A survey tape stretched between the permanent cross-section monuments/pins will be centered in each of the streambank photographs. The water elevation will be shown in the lower edge of the frame, and as much of the streambank as possible will be included in each photo. Photographers should attempt to consistently maintain the same area in each photo over time. Streambed Materials: Representative streambed material samples will be collected in locations where riffles are installed as part of the project. The post-construction riffle substrate samples will be compared to the existing riffle substrate data collected during the design phase. Any significant changes (e.g., aggradation, degradation, embeddedness) will be noted after streambank vegetation becomes established and a minimum of two bankfull flows or greater have been documented. If changes are observed within stable riffles and pools, additional sediment transport analyses and calculations may be required. Water & Land Solutions Horne Creek Tributaries Mitigation Project Page 54 DMS Project #100026 8.2.3 Flow Duration Monitoring Jurisdictional Stream Flow Documentation: Monitoring of stream flow will be conducted to demonstrate that the restored stream systems classified as intermittent exhibit surface flow for a minimum of 30 consecutive days throughout some portion of the year during a year with normal rainfall conditions. To determine if rainfall amounts are normal for the given year, a rainfall gage will be installed on the site to compare precipitation amounts using tallied data obtained from the Surry County Airport Weather Station (KMWK), approximately fifteen miles north of the site. Data from the weather station can be obtained from the CRONOS Database located on the State Climate Office of North Carolina’s website. If a normal year of precipitation does not occur during the first seven years of monitoring, monitoring of flow conditions on the site will continue until it documents that the intermittent streams have been flowing during the appropriate times of the year. The proposed monitoring of the restored intermittent reaches will include the installation of continuous stream stage recorders within the bottom (toe of slope) of the channel towards the upper portion of reach R2 near the confluence with R3. In addition, photographic documentation using a continuous series of remote photos over time will be used to subjectively evaluate and document channel flow conditions throughout the year. More specifically, the longitudinal photos should indicate the presence of flow within the channel to illustrate water levels within the pools and riffles. The photographs will be taken from a height of approximately five feet to ensure that the same locations (and view directions) at the site are documented in each monitoring period and will be shown on a plan view map. Monitoring flow gages (continuous-read pressure transducers) will be installed towards the upper portion of restored intermittent reaches. Continuous surface water flow within the channel must be documented to occur every year for at least 30 consecutive days during the prescribed monitoring period. The devices will be inspected on a quarterly basis to document surface flow hydrology and provide a basis for evaluating flow response to rainfall events and surface runoff during various water tables levels throughout the monitoring period (KCI, DMS, 2010). 8.3 Wetland Monitoring Wetland mitigation credits are not contracted or proposed for this project. Wetland mitigation monitoring is therefore not included for this project. 8.4 Vegetation Monitoring Successful restoration of the vegetation at the project site is dependent upon successful hydrologic restoration, active establishment and survival of the planted preferred canopy vegetation species, and volunteer regeneration of the native plant community. To determine if these criteria are successfully achieved, vegetation-monitoring quadrants or plots will be installed and monitored across the restoration site in accordance with the CVS-EEP Level I & II Monitoring Protocol (CVS, 2008) and DMS Stream and Wetland Monitoring Guidelines (DMS, 2014). The vegetation monitoring plots shall be approximately 2% of the planted portion of the site with a minimum of twelve (12) plots established randomly within the planted riparian buffer areas. The sampling may employ quasi-random plot locations which may vary upon approval from DMS and IRT. Any random plots should comprise no more than 50% of the total required plots, and the location (GPS coordinates and orientation) will identified in the monitoring reports. Water & Land Solutions Horne Creek Tributaries Mitigation Project Page 55 DMS Project #100026 No monitoring quadrants will be established within undisturbed wooded areas, such as those along reaches R4a and R4b, however visual observations will be documented in the annual monitoring reports to describe any changes to the existing vegetation community. The size and location of individual quadrants will be 100 square meters (10m X 10m or 5m X 20m) for woody tree species and may be adjusted based on site conditions after construction activities have been completed. Vegetation monitoring will occur in the fall each required monitoring year, prior to the loss of leaves. Mortality will be determined from the difference between the previous year's living, planted seedlings and the current year's living, planted seedlings. Data will be collected at each individual quadrant and will include specific data for monitored stems on diameter, height, species, date planted, and grid location, as well as a collective determination of the survival density within that quadrant. Relative values will be calculated, and importance values will be determined. Individual planted seedlings will be marked at planting or monitoring baseline setup so that those stems can be found and identified consistently each successive monitoring year. Volunteer species will be recorded and counted in the total list of species in the plots in all cases, however non-native species counts will be excluded from the calculation of total (planted plus volunteer) densities. The presence of invasive species vegetation within the monitoring quadrants will also be noted, as will any wildlife effects. At the end of the first full growing season (from baseline/year 0) or after 180 days between March 15th and November 15th, species composition, stem density, and survival will be evaluated. For each subsequent year, vegetation plots shall be monitored for seven years in years 1, 2, 3, 5 and 7, and visual monitoring in years 4 and 6, or until the final success criteria are achieved. While measuring species density is the current accepted methodology for evaluating vegetation success on mitigation projects, species density alone may be inadequate for assessing plant community health. For this reason, the vegetation monitoring plan will incorporate the evaluation of native volunteer species, and the presence of invasive species vegetation to assess overall vegetative success. WLS will provide required remedial action on a case-by-case basis, such as replanting more wet/drought tolerant species vegetation, conducting beaver and beaver dam management/removal, and removing undesirable/invasive species vegetation, and will continue to monitor vegetation performance until the corrective actions demonstrate that the site is trending towards or meeting the standard requirement. Existing mature woody vegetation will be visually monitored during annual site visits to document any mortality, due to construction activities or changes to the water table, that negatively impact existing forest cover or favorable buffer vegetation. Water & Land Solutions Horne Creek Tributaries Mitigation Project Page 56 DMS Project #100026 Table 23. Proposed Monitoring Plan Summary Functional Category (Level) Project Goal / Parameter Measurement Method Performance Standard Potential Functional Uplift Hydrology (Level 1) Improve Base Flow Duration and Overbank Flows (i.e. channel forming discharge) Well device (pressure transducer), regional curve, regression equations, catchment assessment Maintain seasonal flow for a minimum of 30 consecutive days during normal annual rainfall. Create a more natural and higher functioning headwater flow regime and provide aquatic passage. Hydraulics (Level 2) Reconnect Floodplain / Increase Floodprone Area Widths Bank Height Ratio, Entrenchment Ratio, crest gauge Maintain average BHRs between 1.0-1.2 and ERs no less than 2.2 (1.4 for B stream types) and document over bank and/or geomorphically significant flow events. Provide temporary water storage and reduce erosive forces (shear stress) in channel during larger flow events. Geomorphology (Level 3) Improve Bedform Diversity Pool to Pool spacing, riffle-pool sequence, pool max depth ratio, Longitudinal Profile Increase riffle/pool percentage and pool-to-pool spacing ratios compared to reference reach conditions. Provide a more natural stream morphology, energy dissipation and aquatic habitat/refugia. Increase Vertical and Lateral Stability BEHI / NBS, Cross- sections and Longitudinal Profile Surveys, visual assessment Decrease streambank erosion rates comparable to reference condition cross- section, pattern and vertical profile values. Reduce sedimentation, excessive aggradation, and embeddedness to allow for interstitial flow habitat. Establish Riparian Buffer Vegetation CVS Level I & II Protocol Tree Veg Plots (Strata Composition and Density), visual assessment Within planted portions of the site, a minimum of 320 stems per acre must be present at year three; a minimum of 260 stems per acre must be present at year five; and a minimum of 210 stems per acre and average eight foot tree heights must be present at year seven. Increase woody and herbaceous vegetation will provide channel stability and reduce streambank erosion, runoff rates and exotic species vegetation. Physiochemical (Level 4) Improve Water Quality N/A N/A Removal of excess nutrients, FC bacteria, and organic pollutants will increase the hyporheic exchange and dissolved oxygen (DO) levels. Biology (Level 5) Improve Benthic Macroinvertebrate Communities and Aquatic Health DWR Small Stream/ Benthic sampling, IBI N/A Increase leaf litter and organic matter critical to provide in-stream cover/shade, wood recruitment, and carbon sourcing. Note: Level 4 and 5 project parameters and monitoring activities will not be tied to performance standards nor required to demonstrate success for credit release. Water & Land Solutions Horne Creek Tributaries Mitigation Project Page 57 DMS Project #100026 9 Adaptive Management Plan In the event the mitigation site or a specific component of the mitigation site fails to achieve the necessary performance standards as specified in the mitigation plan, the sponsor shall notify the members of the NCIRT and work with the NCIRT to develop contingency plans and remedial actions. 10 Long-Term Management Plan The site will be transferred to the NCDEQ Stewardship Program. This party shall serve as conservation easement holder and long-term steward for the property and will conduct periodic inspection of the site to ensure that restrictions required in the conservation easement are upheld. Funding will be supplied by the responsible party on a yearly basis until such time and endowments are established. The NCDEQ Stewardship Program is developing an endowment system within the non-reverting, interest-bearing Conservation Lands Stewardship Endowment Account. The use of funds from the Endowment Account is governed by NC General Statue GS 113A-232(d) (3). Interest gained by the endowment fund may be used only for stewardship, monitoring, stewardship administration, and land transaction costs, if applicable. WLS does not expect that easement compliance and management will require any additional or alternative management planning, strategies or efforts beyond those typically prescribed and followed for DMS full-delivery projects. Water & Land Solutions Horne Creek Tributaries Mitigation Project Page 58 DMS Project #100026 11 References Bain, Daniel J. 2012. Legacy Effects in Material Flux: Structural Catchment Changes Predate Long-Term Studies. BioScience. Vol. 62 No. 6. Bilby, R. E. 1984. Removal of woody debris may affect stream channel stability. Journal of Forestry 82:609- 61. Cooper, A. B.; Smith, C. M.; Smith, M. J. 1995: Effects of riparian set-aside on soil characteristics in an agricultural landscape: implications for nutrient transport and retention. Agriculture Ecosystems & Environment 55: 61-67. Copeland, R.R, D.N. McComas, C.R. Thorne, P.J. Soar, M.M. Jones, and J.B. Fripp. 2001. United States Army Corps of Engineers (USACE). Hydraulic Design of Stream Restoration Projects. Washington, DC. Division of Mitigation Services. 2016. Quantifying Benefits to Water Quality from Livestock Exclusion and Riparian Buffer Establishment for Stream Restoration. Doyle, M.W. Stanley, E.H. Strayer, D.L. Jacobson, R.B. & Schmidt, J.C. 2005. Effective discharge analysis of ecological processes in streams. Water Resources Research, 41, W11411, doi: 10.1029/2005WR004222. Dunne, T. & Leopold, L.B. (1978): Water in Environmental Planning W.HG. Freeman Co., San Francisco, 818 pp. Ecological Flows Science Advisory Board (EFSAB). 2013. Recommendations for Estimating Flows to Maintain Ecological Integrity in Streams and Rivers in North Carolina. Federal Interagency Stream Restoration Working Group (FISRWG). 1998. Stream corridor restoration: Principles, processes and practices. National Technical Information Service. Springfield, VA. Harman, W.A., G.D. Jennings, J.M. Patterson, D.R. Clinton, L.O. Slate, A.G. Jessup, J.R. Everhart, and R.E. Smith. 1999. Bankfull hydraulic geometry relationships for North Carolina streams. Wildland Hydrology. AWRA Symposium Proceedings. D.S. Olsen and J.P. Potyondy, eds. American Water Resources Association. June 30-July 2, 1999. Bozeman, MT. Harman, W.A. and C.J. Jones. 2016. Functional Lift Quantification Tool for Stream Restoration Projects in North Carolina: Spreadsheet User Manual. Environmental Defense Fund, Raleigh, NC. Harman, W., R. Starr, M. Carter, K. Tweedy, M. Clemmons, K. Suggs, C. Miller. 2012. A function based framework for developing stream assessments, restoration goals, performance standards and standard operating procedures. U.S. Environmental Protection Agency, Office of Wetlands, Oceans, and Watersheds, Washington, D.C. Harman, W., R. Starr. 2011. Natural Channel Design Review Checklist. US Fish and Wildlife Service, Chesapeake Bay Field Office, Annapolis, MD and US Environmental Protection Agency, Office of Wetlands, Oceans, and Watersheds, Wetlands Division. Washington D.C. EPS 843-B-12-005. Water & Land Solutions Horne Creek Tributaries Mitigation Project Page 59 DMS Project #100026 Hey, R.D. 2006. Fluvial Geomorphological Methodology for Natural Stable Channel Design. Journal of American Water Resources Association. April 2006. Vol. 42, No. 2. pp. 357-374. AWRA Paper No. 02094. Hess, Hydrology and Earth System Sciences. 2014. Flow pathways and nutrient transport mechanisms drive hydrochemical sensitivity to climate change across catchments with different geology and topography. V 18, 5125–5148. Homer, C.G., Dewitz, J.A., Yang, L., Jin, S., Danielson, P., Xian, G., Coulston, J., Herold, N.D., Wickham, J.D., and Megown, K., 2015, Completion of the 2011 National Land Cover Database for the conterminous United States-Representing a decade of land cover change information. Photogrammetric Engineering and Remote Sensing, v. 81, no. 5, p. 345-354. Jacobson, R.B. and Coleman, D.J., 1986. Stratigraphy and recent evolution of Maryland Piedmont Flood Plains. American Journal of Science 286:617-637. James, Allan L., 2013. Legacy sediment: Definitions and processes of episodically produced anthropogenic sediment. Geography Department, University South Carolina. Anthropocene, v. 2, pg 16–26. Johnson, P.A., and T.M. Heil, 1996. Uncertainty in Estimating Bankfull Conditions. Journal of the American Water Resources Association 32(6): 1283-1292. KCI Associates of NC, DMS. 2010. Using Pressure Transducers for Stream Restoration Design and Monitoring. Knighton, D. 1998. Fluvial Forms and Processes – A New Perspective. Arnold Publishers. London. Kilpatrick, F.A. and H.H. Barnes, Jr. 1964. Channel Geometry of Piedmont Streams as Related to Frequency of Floods. U.S. Geological Survey Professional Paper 422-E. U.S. Government Printing Office. Washington, D.C. 10 pp. King, S. E., Osmond, D.L., Smith, J., Burchell, Dukes, M., Evans, M., Knies, M., Kunickis, S. 2016. Effects of Riparian Buffer Vegetation and Width: A 12-Year Longitudinal Study. Journal of Environmental Quality. Leopold, Luna B., 1994. A View of the River. Harvard University Press. Cambridge, Mass. Line, D.E., Harman, W.A., Jennings, G.D., Thompson, E.J., Osmond, D.L., 2000. Nonpoint-source pollutant load reductions associated with livestock exclusion. J. Environ. Qual. 29, 1882–1890. McKenney, R., R. B. Jacobson, and R. C. Wertheimer. 1995. Woody vegetation and channel morphogenesis in low gradient gravel-bed streams. Geomorphology 13:175-198. Metcalf, C. 2004. Regional Channel Characteristics for Maintaining Natural Fluvial Geomorphology in Florida Streams. U.S. Fish and Wildlife Service, Panama City Fisheries Resource Office. Panama City, FL. http://www.dot.state.fl.us/researchcenter/Completed_Proj/Summary_EMO/FDOT_ BD470_final.pdf Miller, J., Chanasyk, D., Curtis, T., Entz, T., and Willms, W. 2010. Influence of streambank fencing with a cattle crossing on riparian health and water quality of the Lower Little Bow River in Southern Alberta, Canada. Agriculture Water Management, Lethbridge, AB. pp. 247-258. Water & Land Solutions Horne Creek Tributaries Mitigation Project Page 60 DMS Project #100026 Montgomery D.R. and S. M. Bolton 2003. Hydrogeomorphic variability and river restoration, 39–80. © 2003 by the American Fisheries Society. Nixon, M.A. 1959. A study of the bankfull discharges of rivers in England and Wales. Institute of Civil Engineers Proceedings Paper No. 6322, pp. 157-174. North Carolina Department of Environmental Quality, Division of Water Resources, Water Sciences Section, Biological Assessment Branch. 2016. Standard Operating Procedures for the Collection and Analysis of Benthic Macroinvertebrates, v. 5.0. North Carolina Division of Water Quality. 2010. Methodology for Identification of Intermittent and Perennial Streams and Their Origins. Version 4.11, September 2010. North Carolina Geological Survey. 1998. North Carolina Department of Environment and Natural Resources, Raleigh, NC. Cited from http://www.geology.enr.state.nc.us/usgs/geomap.htm on July 17, 2016. North Carolina Stream Functional Assessment Team, 2015. “NC Stream Assessment Method (NC SAM) User Manual”. Version 2.1, August 2015. Omernik, J.M. and G.E. Griffith. 2014. Ecoregions of the conterminous United States: evolution of a hierarchical spatial framework. Environmental Management 54(6):1249-1266. Owens, L.B., Edwards, W.M., van Keuren, R.W., 1996. Sediment losses from a pastured watershed before and after stream fencing. J. Soil Water Conserv. 51 (1), 90–94. Poff, N. L., J. D. Allan, M. B. Bain, J. R. Karr, K. L. Prestegaard, B. D. Richter, R. E. Sparks, and J. C. Stromberg. 1997. The natural flow regime. BioScience 47:769-784. Postel, S. and B. D. Richter. 2003. Rivers for Life: Managing Water for People and Nature. Washington, D.C.: Island Press. Power, M. E., R. J. Stout, C. E. Cushing, P. P. Harper, F. R. Hauer, W. J. Mathews, P. B. Moyle, B. Statzner, AND I. R. Wais De Badgen. 1988. Biotic and abiotic controls in river and stream communities. Journal of the North American Benthological Society 7:456-479. (RBRP) North Carolina Ecosystem Enhancement Program (EEP), 2009. Yadkin Pee-Dee River Basin Watershed Restoration Priorities (RBRP). February 2009. Resh, V. H., A. V. Brown, A. P. Covich, M. E. Gurtz, H. W. Li, G. W. Minshall, S. R. Reice, A. L. Sheldon, J. B. Wallace, and R. C. Wissmar. 1988. The role of disturbance in stream ecology. Journal of the North American Benthological Society 7:433–455. Rosgen, D. L., 1994. A Classification of Natural Rivers. Catena 22: 169-199. Rosgen, D.L., 2006. Watershed Assessment of River Stability and Sediment Supply. Wildland Hydrology Books, Pagosa Springs, CO. Schafale, M. P., and A. S. Weakley. 1990. Classification of the natural communities of North Carolina, third approximation. North Carolina Natural Heritage Program. Raleigh, NC. Scherrer, E. 1999. Using Microtopography to Restore Wetland Plant Communities in Eastern North Carolina. http://www4.ncsu.edu/unity/users/s/shear/public/restore/scherrer.htm Water & Land Solutions Horne Creek Tributaries Mitigation Project Page 61 DMS Project #100026 Schlosser, I. J. 1985. Flow regime, juvenile abundance, and the assemblage structure of stream fishes. Ecology 66: 1484- 1490. Schumm, S.A., 1960. The Shape of Alluvial Channels in Relation to Sediment Type. U.S. Geological Survey Professional Paper 352-B. U.S. Geological Survey. Washington, DC. Simon, Andrew. 1989. A model of channel response in disturbed alluvial channels. Earth Surface Processes and Landforms. Volume 14, Issue 1, pg 11–26. Skidmore, P.B, Shields, F., Doyle, M., and Miller, D. (2001). A Categorization of Approaches to Natural Channel Design. Wetlands Engineering & River Restoration: pg 1-12. United States Army Corps of Engineers. 1987. Corps of Engineers Wetlands Delineation Manual. Technical Report Y-87-1. Environmental Laboratory. US Army Engineer Waterways Experiment Station. Vicksburg, MS. ___. 1997. Corps of Engineers Wetlands Research Program. Technical Note VN-RS-4.1. Environmental Laboratory. U.S. Army Engineer Waterways Experiment Station. Vicksburg, MS. ___. 2003. Stream Mitigation Guidelines, April 2003, U.S. Army Corps of Engineers. Wilmington District. ___. 2008. Stream Mitigation Guidelines, April 2008, U.S. Army Corps of Engineers. Wilmington District. United States Department of Agriculture, Natural Resources Conservation Service. 2009. Stream Visual Assessment Protocol, Version 2. NBH, Part 614. United States Department of Agriculture, Natural Resources Conservation Service Soil Survey Division. A. Walker, Personal communication, 2015. NC BEHI/NBS rating curve. United States Department of Agriculture, Natural Resources Conservation Service Soil Survey Division. 2007. Soil Survey of Surry County, North Carolina. United States Department of Agriculture, Natural Resources Conservation Service. 2007. Stream Restoration Design Part 654, National Engineering Handbook. United States Department of Agriculture, Natural Resources Conservation Service. 2007. National Climate Dataset. United States Environmental Protection Agency (USEPA), Michigan Department of Environmental Quality, 1999. Region 5 Model for Estimating Load Reductions. v4.3. United States Geological Survey. 1998. Williams, G.P., 1978. Bank-Full Discharge of Rivers. Water Resources Research 14(6):1141-1154, doi: 10.1029/WR014i006 p01141. Wilcock, P. R. 1993. Critical shear stress of natural sediments. Journal of Hydraulic Engineering 1199:491- 505. Wolman, M. G., and Leopold, L. B., 1957, River flood plains; some observations on their formation: U.S. Geol. Survey Prof. Paper 282-C, pg 22. Sources: Esri, HERE, Garmin, USGS, Intermap, INCREMENT P, NRCan, Esri Japan, METI, Esri China (Hong Kong), Esri Korea, Esri (Thailand), NGCC, (c) OpenStreetMap contributors, and the GIS User Community±0 0.4 0.8 Miles FIGURE1Horne Creek Tributaries Mitigation Project NAD 1983 2011 State PlaneNorth Carolina FIPS 3200 FT US Vicinity Map ^_ ^_ Surry Co unty Stokes Coun ty Forsyth County Yadkin County Legend ^_Proje ct L ocatio n TLWs TLW: 03040101110070 LWP-2 008-51 HUC: 0304010 1 HUC-1 2 Surry Co . Hydrography Surry Co unty NC Coun ties Conservation Easement 0 4 8 Miles050100Miles Project is located in TLW HUC-14: 03040101110070 LWP: 2008-51 Horne Creek Source: Esri, DigitalGlobe, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community ±0 1,000 2,000 Feet FIGURE2Horne Creek Tributaries Mitigation Project NAD 1983 2011 State PlaneNorth Carolina FIPS 3200 FT US Existing Geology Map Legend Conserva tio n Easeme ntExisting G eology Inner Piedm ont, C hauga Belt, Sm ith R iver Allochthon, and Sauratown Mountain: CZm g Inner Piedm ont, C hauga Belt, Sm ith R iver Allochthon, and Sauratown Mountain: Yg Copyright:© 2013 National Geographic Society, i-cubed ±0 500 1,0 00 Fee t FIGURE3Horne Creek Tributaries Mitigation Project NAD 1983 2011 State PlaneNorth Carolina FIPS 3200 FT US USGS Topographic Map Legend Conservation Easement Catchment Are a: 28 acre s Catchment Are a: 38 acre s Catchment Are a: 81 acre s Catchment Are a: 169 acres Pilot Mountain QuadrangleNorth Carolina- Surry Co. FeC2 FeD2 FeD2 CsA FeC2 FeB2 FeB2 FeB2 FeC2 FnC2 FeB2 FnC2 FeC2 FeD2 FrC2 DrB FeC2 WoD WoD FeB2 FeB2 FeB2 W FeC2BbC BdC W FeC2FeC2 W FeC2 FeB2 FeC2 FeB2 FfD FfDFfD FnB2 Source: Esri, DigitalGlobe, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community±0 500 1,000 Feet FIGURE4Horne Creek Tributaries Mitigation Project NAD 1983 2011 State PlaneNorth Carolina FIPS 3200 FT US NRCS Soils Map Legend Conservation EasementSoil Map Units (NRCS Data from We b Soil Survey) BbC: B raddock fine sandy loam, 8-15% slopes BdC: B raddock cobbly fine sandy loam, 8-15% slopes, stony CsA: Colvard and Suches soil. 0-3% slopes, occasionally flooded DrB: Dillard fine sandy loam, 2-8% slopes, rarely flooded FeB2: Fairview sandy clay loam, 2-8% slopes, moderately eroded FeC2: Fairview sandy clay loam, 8-15% slopes, moderately eroded FeD2: Fairview sandy clay loam, 15-25% slopes, moderately eroded FnB2: Fairview cobbly sandy clay loam, 2-8% slopes, moderately eroded, stony FnC2: Fairview cobbly sandy clay loam, 8-15% slopes, moderately eroded, stony FrC2: Fairview-Siloam complex, 8-15% slopes, moderately eroded W: Water Legend Qconservation Easement LiDAR Data percentage: 0 Elevation 1131.51 - 1241.03 1099.45 - 1131.51 1078.42 - 1099.45 I[=]I 1064.09 - 1078.42 1046.64 - 1064.09 1038.3 - 1046.64 1031.26 - 1038.3 1026.53 - 1031.26 1023.11 - 1026.53 1019.55 - 1023. 11 1016.21 - 1019.55 1013.09 - 1016.21 1009.58 - 1013.09 1005.3 - 1009.58 1000.64 - 1005.3 996.78 - 1000.64 992.63 - 996.78 988.27 - 992.63 ® 984.24 - 988.27 978.74 - 984.24 973.51 - 978.74 968.73 - 973.51 963.06 - 968.73 957.86 - 963.06 953.46 - 957.86 948.85 - 953.46 942.5 - 948.85 933.24 - 942.5 921.85 - 933.24 907.94 - 921.85 894.83 - 907.94 878.09 - 894.83 ,/ow,60i WATER & LAND Tm Horne Creek Tributaries LiDAR Map SOLUTIONS Mitigation Project NAD 1983 2011 State Plane North Carolina FIPS 3200 FT I w FIGURE 5 R1 R4B R4A R4 R2 R3 R5 8 6 5 3 2 1 15 14 13 12 16 17 19 2022 23 24 25 26 27 28 9 7 4 10 11 1821 Source: Esri, DigitalGlobe, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community±0 500 1,000 Feet FIGURE6Horne Creek Tributaries Mitigation Project NAD 1983 2011 State PlaneNorth Carolina FIPS 3200 FT US Current Conditions Map Legend Conservation Easement Photo Location P oint Verified Wetlands Stream Classification Intermittent Perennial Kiger Road Impervious Cover: 0.5% Dominant Land Use: Agricultural (Pasture/Hay (46%), Row Crop (24%)), Mixed Forest (16%) Caudle Road WA WB WD WC See Appendix 2 for site photographs. Legend Conservation Easement ±0 500 1,000 Feet FIGURE7aHorne Creek Tributaries Mitigation Project NAD 1983 2011 State PlaneNorth Carolina FIPS 3200 FT US 1936 Aerial Photograph Source: Surry Soil & Water Conservation District Legend Conservation Easement ±0 500 1,000 Feet FIGURE7bHorne Creek Tributaries Mitigation Project NAD 1983 2011 State PlaneNorth Carolina FIPS 3200 FT US 1940 Aerial Photograph Source: Surry Soil & Water Conservation District Legend Conservation Easement ±0 500 1,000 Feet FIGURE7cHorne Creek Tributaries Mitigation Project NAD 1983 2011 State PlaneNorth Carolina FIPS 3200 FT US 1951 Aerial Photograph Source: Surry Soil & Water Conservation District Legend Conservation Easement ±0 500 1,000 Feet FIGURE7dHorne Creek Tributaries Mitigation Project NAD 1983 2011 State PlaneNorth Carolina FIPS 3200 FT US 1992 Aerial Photograph Source: Surry Soil & Water Conservation District Legend Conservation Easement ±0 500 1,000 Feet FIGURE7eHorne Creek Tributaries Mitigation Project NAD 1983 2011 State PlaneNorth Carolina FIPS 3200 FT US 2006 Aerial Photograph Source: Surry Soil & Water Conservation District 9709789749829869909949981 0 1 8 1 0 2 2 102610341 0 3 0 1038 1 0 1 4 10101 0 0 6 1002958966954 9629 5 01042 10461 0 5 0 9 4 6 9421 0 5 4 10581 0 6 2 9 3 8 9 3 4 1066 10 701 0 7 4 9309 2 6 9 2 2 9 1 8 9149 1 0107810821086 9061090 9021 0 9 41098 898110211069941014 1038 990 9581010 1 0 7 8 994962950 1018 1 0 8 2 10341026 1 0 4 2 1 0 0 6 96610229181086 Source: Esri, DigitalGlobe, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community±0 500 1,000 Feet FIGURE8Horne Creek Tributaries Mitigation Project NAD 1983 2011 State PlaneNorth Carolina FIPS 3200 FT US Floodplain Map Legend Conservation Easem ent Existing S treams (Warm Water Thermal Regime) 2ft C ontours Minor Major Site reaches are not within any FEMA mapped floodplains or regulated streams. Kiger Road R1 R4B R4A R4 R2 R3 R5 kj kj !. !. !. !> Source: Esri, DigitalGlobe, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community±0 500 1,000 Feet FIGURE9Horne Creek Tributaries Mitigation Project NAD 1983 2011 State PlaneNorth Carolina FIPS 3200 FT US Proposed Mitigation Assets & Monitoring Features Map Lege nd !>Flow Guage !.Sediment Sample Conservation Easement kj Macro Samples Water Quality Treatment Vegetation PlotsCross Sectio ns Pool RiffleStream Mitigation Type Enhancement Level II Restoration (PI) Kiger Road R1 R4B R4A R4 R2 R3 R5 ^_ ^_SCP BF Source: Esri, DigitalGlobe, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community±0 500 1,000 Feet FIGURE10Horne Creek Tributaries Mitigation Project NAD 1983 2011 State PlaneNorth Carolina FIPS 3200 FT US Reference Reach Location Map Legend ^_Reference Reach Locations Conservation Easement Shoals C omm unity Park Brown Farm Source: Esri, DigitalGlobe, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community±0 500 1,000 Feet FIGURE11aHorne Creek Tributaries Mitigation Project NAD 1983 2011 State PlaneNorth Carolina FIPS 3200 FT US Buffer Width Map Legend Conservation Easement Top of Bank Buffer Width Zones 15 ft 20 ft 25 ft 30 ft 50 ft 75 ft 100 ft 125 ft 150 ft R4B R4A R4 R2 R3 R5 Source: Esri, DigitalGlobe, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community±0 500 1,000 Feet FIGURE11bHorne Creek Tributaries Mitigation Project NAD 1983 2011 State PlaneNorth Carolina FIPS 3200 FT US Buffer Width Map Legend Conservation Easement Top of Bank IdealBufferBuffer Width Zones 15 ft 20 ft 25 ft 30 ft 50 ft 75 ft 100 ft 125 ft 150 ft R1 Buffer Zones less than 15 feet >15 to 20 feet >20 to 25 feet >25 to 30 feet >30 to 50 feet >50 to 75 feet >75 to 100 feet >100 to 125 feet >125 to 150 feetMax Possible Buffer (square feet)162,840 54,280 54,280 54,280 217,120 271,400 271,400 271,400 271,400Ideal Buffer (square feet)164,103 54,682 54,341 53,780 210,182 260,415 263,400 268,013 273,997Actual Buffer (square feet)158,814 51,210 49,893 48,533 117,951 20,978 11,418 7,748 2,386Zone Multiplier 50%20%15%15%9%7%6%5%3%Buffer Credit Equivalent 2,689 1,076 807 807 484 376 323 269 161Percent of Ideal Buffer 97%94%92%90%56%8%4%3%1%Credit Adjustment -87 -68 -66 -79 272 30 14 8 1 Total Baseline Credit 5,378 Total Credit 5,403 Buffer Width Zone (feet from Ordinary High Water Mark) Credit Loss in Required Buffer -300 Credit Gain for Additional Buffer 325 Net Change in Credit from Buffers25 Water & Land Solutions Horne Creek Tributaries Mitigation Project Appendix 1 – Plan Sheets CECECECECE CECECE CECECECECECE CE CE CECECECECECECECE CE CE CECECE CECEC E C E CE CE CECECECECECECECECECECECECECECECECECECECECECECE CE C E C E CE C E C E CECE CE CECE CECECECE CE CECECEC E CECECECECEPR O F ESSIONALSEAL36916ENGINEE R N O R THCAROLINACHRISTOPAT O M . ICHERSNO.REVISIONSDATEPROJECT NAMESHEET NUMBERDESIGNED BY :DRAWN BY :DATE :PROJECT NO. :FILENAME :DRAWING INFORMATIONSHEET NAMEHORIZ. SCALE :VERT. SCALE :PROJECT ENGINEERAENGINEERING SERVICES BYWLS ENGINEERING, PLLCFIRM LICENSE NO. P-1480BCDEFWATER & LAND SOLUTIONS7721 Six Fork Rd., Suite 130Raleigh, NC 27614(919)614-5111waterlandsolutions.comDRAFT MIT PLAN12-13-18SURRY COUNTY, NCDRAFT FINAL MIT PLAN5-8-19FINAL MIT PLAN7-26-19N O T F O R C O N S T R U C T I O N P R E L IM I N A R Y P L A N S17/26/19100026CAT/APLCOVERSHEETN/AHORNE CREEK TRIBUTARIES MITIGATION PROJECTSURRY COUNTY, NORTH CAROLINAVICINITY MAPSHEET INDEX1234-78-1516-19COVER SHEETLEGEND/CONSTRUCTIONSEQUENCE /GENERALNOTESTYPICAL SECTIONSDETAILSPLAN AND PROFILEREVEGETATION PLANN.T.S.DEPARTMENT OF ENVIRONMENTAL QUALITY - DIVISION OF MITIGATION SERVICESNCDEQ - DMS PROJECT ID # 100026NCDEQ - DMS CONTRACT #7181 UNDER RFP 16-006993YADKIN RIVER BASIN (CU 03040101)USACE ACTION ID # SAW-2017-01510TYPE OF WORK : STREAM MITIGATIONPROJECT SUMMARYNCDEQ-DMS CONTRACT ADMINISTRATOR:KRISTIE CORSON1652 MAIL SERVICE CENTERRALEIGH, NC 27699-1652PH: 919-707-893501_HORNE CREEK_COVER.DWGHORNE CREEKTRIBUTARIESMITIGATIONPROJECTCAT2501250250500GRAPHIC SCALER3R2R4R4AR4BR5R1CAUDLE ROADKIGER ROADSHOALS ROAD JOHN SCOTT ROADSHOALS ROAD ELLIS HARDY ROADSHT 8SHT 9SHT 10PROJECTLOCATIONAPPROXIMATE PROJECT CENTER36.2851950° N-80.5032100° WBEGIN CONSTRUCTION R1STATION 10+00END CONSTRUCTION R1STATION 23+58END CONSTRUCTION R5STATION 48+12BEGIN CONSTRUCTION R2STATION 9+49BEGIN CONSTRUCTION R3STATION 10+51END CONSTRUCTION R2BEGIN CONSTRUCTION R4STATION 13+13END CONSTRUCTION R3STATION 12+55END CONSTRUCTION R4BEGIN CONSTRUCTION R5STATION 25+19END CONSTRUCTION R4BSTATION 12+24END CONSTRUCTION R4ASTATION 12+65BEGIN CONSTRUCTION R4ASTATION 10+98BEGIN CONSTRUCTION R4BSTATION 10+72KIGER RD. (SR-2071)SHOALS RD. (SR - 2069) CAUDLE RD. (SR-2070)1" = 500'SH T 1 1 SH T 1 2SHT 13 S H T 1 4SHT 15 GENERAL NOTESCONSTRUCTION SEQUENCEGRADING NOTESLEGENDROOTWADLOG VANELOG WEIRLOG STEP-POOLGRADE CONTROL LOG J-HOOK VANEPROPOSED CONSERVATION EASEMENT BOUNDARYCECE100EXISTING MAJOR CONTOUR101EXISTING MINOR CONTOUR100PROPOSED MAJOR CONTOUR101PROPOSED MINOR CONTOUREXISTING TREECHANNEL BLOCKCHANNEL FILLLDLDLIMITS OF DISTURBANCEPROPOSED TOP OF STREAM BANKEXISTING PROPERTY BOUNDARYTEMPORARY STREAM CROSSINGPERMANENT STREAM CROSSINGPROPOSED CENTERLINE ( THALWEG)GEOLIFT W/ TOEWOODC/FC/FCUT/FILL LIMITSWLBWLBEXISTING WETLAND BOUNDARYPROPOSED WATER QUALITY TREATMENT FEATUREXXPROPOSED FIELD FENCETPTPTPPROPOSED TREE PROTECTION FENCESTONE AND LOG STEP-POOLCONSTRUCTED STONE RIFFLEPROPOSED OUTLET CHANNELCONSTRUCTED LOG RIFFLEEXISTING OVERHEAD ELECTRICOHEEXISTING WOODLINE15+00EXISTING FENCEXPROPOSED GATEEXISTING STRUCTUREEXISTING WETLAND AREA1.NO GRADING ACTIVITIES SHALL OCCUR BEYOND THEPROJECT LIMITS OF DISTURBANCE (LOD) AS SHOWN ONTHE DESIGN PLANS.2.ONCE PROPOSED GRADES ARE ACHIEVED ALONG THECONSTRUCTED STREAM CHANNEL, BANKFULL BENCHESAND FLOODPLAIN AREAS AS SHOWN ON THE PLANS,GRADED AREAS SHALL BE ROUGHENED USINGTECHNIQUES DESCRIBED IN THE CONSTRUCTIONSPECIFICATIONS.3.ALL SUITABLE SOIL MATERIAL REQUIRED TO FILL AND/ORPLUG EXISTING DITCHES AND/OR STREAM CHANNEL SHALLBE GENERATED ON-SITE AS DESCRIBED IN THECONSTRUCTION SPECIFICATIONS. ANY EXCESS SPOILMATERIAL SHALL BE STOCKPILED IN DESIGNATED AREASAND OR HAULED OFF-SITE AS APPROVED BY THEENGINEER.1.THE PROJECT SITE IS LOCATED IN SURRY COUNTY, NORTH CAROLINA, APPROXIMATELY 7.5MILES SOUTH OF THE TOWN OF PILOT MOUNTAIN AS SHOWN ON THE COVER SHEET VICINITYMAP. TO ACCESS THE SITE FROM RALEIGH, TAKE I-40 W TO EXIT 206 (I-40 BUS/US-421 N). TAKEEXIT 6B (NC-8 NC/US-311/US-52 N) FROM I-40 BUS/US-421 N (12.4 MI) TOWARD MT. AIRY. TAKEEXIT 129 TOWARD PINNACLE (20.1 MI). TURN LEFT ONTO PERCH RD. TRAVEL 1.5 MI ON PERCHROAD TO STONY RIDGE. TURN RIGHT ONTO STONY RIDGE AND TRAVEL 2.7 MI. TURN LEFT ONSHOALS RD. AND TRAVEL 1.3 MI. TURN LEFT ONTO CAUDLE RD. TRAVEL 0.6 MI TO UPPERPROJECT BOUNDARY. LOWER PROJECT BOUNDARY CAN BE ACCESS BY TRAVELING EAST ONCAUDLE RD TO KIGER RD. TURN RIGHT ONTO KIGER RD. AND TRAVEL 0.5 MI TO LOWERPROJECT BOUNDARY.2.THE PROJECT SITE BOUNDARIES ARE SHOWN ON THE DESIGN PLANS AS THE PROPOSEDCONSERVATION EASEMENT. THE CONTRACTOR SHALL PERFORM ALL RELATED WORKACTIVITIES WITHIN THE PROJECT SITE BOUNDARIES AND/OR WITHIN THE LIMITS OFDISTURBANCE (LOD). THE PROJECT SITE SHALL BE ACCESSED THROUGH THE DESIGNATEDACCESS POINTS SHOWN ON THE PLANS. THE CONTRACTOR IS RESPONSIBLE FORMAINTAINING PERMITTED ACCESS THROUGHOUT ALL CONSTRUCTION ACTIVITIES.3.THE CONTRACTOR SHALL TAKE ALL NECESSARY PRECAUTIONS AND MEASURES TO PROTECTALL PROPERTIES FROM DAMAGE. THE CONTRACTOR SHALL REPAIR ALL DAMAGE CAUSED BYHIS/HER OPERATIONS TO ALL PUBLIC AND PRIVATE PROPERTY AND LEAVE THE PROPERTY INGOOD CONDITION AND/OR AT LEAST EQUIVALENT TO THE PRE-CONSTRUCTION CONDITIONS.UPON COMPLETION OF ALL CONSTRUCTION ACTIVITIES, THE AREA IS TO BE RESTORED TO ACONDITION EQUAL TO OR BETTER THAN FOUND PRIOR TO CONSTRUCTION.4.THE TOPOGRAPHIC BASE MAP WAS DEVELOPED USING SURVEY DATA COLLECTED BY KEEMAPPING & SURVEYING (KEE) IN THE FALL OF 2017. THE HORIZONTAL DATUM WAS TIED TONAD83 NC STATE PLANE COORDINATE SYSTEM, US SURVEY FEET AND NAVD88 VERTICALDATUM USING VRS NETWORK AND NCGS MONUMENT. IT IS POSSIBLE THAT EXISTINGELEVATIONS AND SITE CONDTIONS MAY HAVE CHANGED SINCE THE ORIGINAL SURVEY WASCOMPLETED DUE TO EROSION, AND/OR SEDIMENT ACCRETION. IT IS THE CONTRACTOR'SRESPONSIBILITY TO CONFIRM EXISTING GRADES AND ADJUST QUANTITIES, EARTHWORK, ANDWORK EFFORTS AS NECESSARY.5.THE CONTRACTOR SHALL VISIT THE CONSTRUCTION SITE AND THOROUGHLY FAMILIARIZEHIM/HERSELF WITH ALL EXISTING CONDITIONS. PRIOR TO BEGINNING CONSTRUCTION. THECONTRACTOR SHALL VERIFY THE ACCURACY AND COMPLETENESS OF THE CONSTRUCTIONSPECIFICATIONS AND DESIGN PLANS REGARDING THE NATURE AND EXTENT OF THE WORKDESCRIBED.6.THE CONTRACTOR SHALL BRING ANY DISCREPANCIES BETWEEN THE CONSTRUCTION PLANSAND SPECIFICATIONS AND/OR FIELD CONDITIONS TO THE ATTENTION OF THE SPONSORSENGINEER BEFORE CONSTRUCTION BEGINS.7.THERE SHALL BE NO CLEARING OR REMOVAL OF ANY NATIVE SPECIES VEGETATION OR TREESOF SIGNIFICANCE, OTHER THAN THOSE INDICATED ON THE PLANS OR AS DIRECTED BY THEENGINEER.8.THE CONTRACTOR SHALL EXERCISE CARE DURING GRADING ACTIVITIES IN THE VICINITY OFNATIVE VEGETATION AND TREES OF SIGNIFICANCE AT THE CONSTRUCTION SITE. ALLGRADING IN THE VICINITY OF TREES NOT IDENTIFIED FOR REMOVAL SHALL BE MADE IN AMANNER THAT DOES NOT DISTURB THE ROOT SYSTEM WITHIN THE DRIP LINE OF THE TREE.9.WORK ACTIVITIES ARE BEING PERFORMED AS AN ENVIRONMENTAL RESTORATION PLAN NEARPRIVATE RESIDENCES. THE CONTRACTOR SHALL MAKE ALL REASONABLE EFFORTS TOREDUCE SEDIMENT LOSS, PROTECT PUBLIC SAFETY, AND MINIMIZE DISTURBANCE OF THE SITEWHILE PERFORMING THE CONSTRUCTION WORK. ALL AREAS SHALL BE KEPT NEAT, CLEAN,AND FREE OF ALL TRASH AND DEBRIS, AND ALL REASONABLE PRECAUTIONS SHALL BE TAKENTO AVOID DAMAGE TO EXISTING ROADS, VEGETATION, TURF, STRUCTURES, AND PRIVATEPROPERTY.10.PRIOR TO START OF WORK, THE CONTRACTOR SHALL SUBMIT THE SOURCE OF MATERIALS,INCLUDING AGGREGATES, EROSION CONTROL MATTING, WOOD AND NATIVE PLANTINGMATERIAL TO THE ENGINEER FOR REVIEW AND APPROVAL. NO WORK SHALL BE PERFORMEDUNTIL THE SOURCE OF MATERIAL IS APPROVED BY THE ENGINEER.11.THE CONTRACTOR SHALL BE HELD SOLELY RESPONSIBLE FOR ANY NECESSARYCOORDINATION BETWEEN THE VARIOUS COUNTY, STATE OR FEDERAL AGENCIES, UTILITYCOMPANIES, HIS/HER SUB-CONTRACTORS, AND THE ENGINEER FOR THE DURATION OF THEPROJECT.12.PRIOR TO START OF WORK, THE CONTRACTOR SHALL SUBMIT THEIR DETAILED PLANTINGSCHEDULE TO THE ENGINEER FOR REVIEW. NO WORK SHALL BE PERFORMED UNTIL THISSCHEDULE IS APPROVED BY THE ENGINEER. THE DETAILED PLANTING SCHEDULE SHALLCONFORM TO THE PLANTING REVEGETATION PLAN AND SHALL INCLUDE A SPECIES LIST ANDTIMING SEQUENCE.13.THE CONTRACTOR IS REQUIRED TO INSTALL IN-STREAM STRUCTURES AND CULVERT PIPESUSING A BACKHOE/EXCAVATOR WITH A HYDRAULIC THUMB OF SUFFICIENT SIZE TO PLACESTRUCTURES INCLUDING LOGS, STONE, BOULDERS, ROOT WADS, AND TEMPORARY WOODMAT STREAM CROSSINGS.THE ENGINEER WILL PROVIDE CONSTRUCTION OBSERVATION DURING THECONSTRUCTION PHASE OF THIS PROJECT. THE GENERAL CONSTRUCTION SEQUENCESHALL BE USED DURING IMPLEMENTATION OF THE PROPOSED PROJECTCONSTRUCTION. CONTRACTOR SHALL REFER TO THE APPROVED PERMITS FORSPECIFIC CONSTRUCTION SEQUENCE ITEMS AND SHALL BE RESPONSIBLE FORFOLLOWING THE APPROVED PLANS AND PERMIT CONDITIONS.1.THE CONTRACTOR SHALL NOTIFY “NC 811” (1-800-632-4949) BEFORE ANYEXCAVATION BEGINS. ANY UTILITIES AND RESPECTIVE EASEMENTS SHOWN ON THEPLANS ARE CONSIDERED APPROXIMATE AND THE CONTRACTOR SHALL NOTIFY THEENGINEER OF ANY DISCREPANCIES. THE CONTRACTOR IS RESPONSIBLE FORLOCATING ALL UTILITIES AND ADJOINING EASEMENTS AND SHALL REPAIR ORREPLACE ANY DAMAGED UTILITIES AT HIS/HER OWN EXPENSE.2.THE CONTRACTOR SHALL MOBILIZE EQUIPMENT, MATERIALS AND PREPARESTAGING AREA(S) AND STOCKPILE AREA(S) AND HAUL ROADS AS SHOWN ON THEPLANS.3.CONSTRUCTION TRAFFIC SHALL BE RESTRICTED TO THE PROJECT AREABOUNDARIES OR AS DENOTED “LIMITS OF DISTURBANCE” OR “HAUL ROADS” ON THEPLANS.4.THE CONTRACTOR SHALL INSTALL APPROVED TEMPORARY SEDIMENTATION ANDEROSION CONTROL MEASURES AT LOCATIONS INDICATED ON THE PLANS.5.THE CONTRACTOR SHALL INSTALL TEMPORARY SILT FENCE AROUND ALL STAGINGAREA(S). TEMPORARY SILT FENCING WILL ALSO BE PLACED AROUND THETEMPORARY STOCKPILE AREAS AS MATERIAL IS STOCKPILED THROUGHOUT THECONSTRUCTION PERIOD.6.THE CONTRACTOR SHALL INSTALL ALL TEMPORARY AND PERMANENT STREAMCROSSINGS AS SHOWN ON THE PLANS IN ACCORDANCE WITH THE SEDIMENTATIONAND EROSION CONTROL PERMIT. THE EXISTING CHANNEL AND DITCHES ON SITEWILL REMAIN OPEN DURING THE INITIAL STAGES OF CONSTRUCTION TO ALLOW FORDRAINAGE AND TO MAINTAIN SITE ACCESSIBILITY.7.THE CONTRACTOR SHALL CONSTRUCT ONLY THE PORTION OF THE PROPOSEDCHANNEL THAT CAN BE COMPLETED AND STABILIZED WITHIN THE SAME DAY. THECONTRACTOR SHALL APPLY TEMPORARY AND PERMANENT SEEDING, MATTING ANDMULCHING TO ALL DISTURBED AREAS AT THE END OF EACH WORK DAY.8.THE CONTRACTOR SHALL CLEAR AND GRUB AN AREA ADEQUATE TO CONSTRUCTTHE STREAM CHANNEL AND GRADING OPERATIONS AFTER ALL SEDIMENTATION ANDEROSION CONTROL PRACTICES HAVE BEEN INSTALLED AND APPROVED. INGENERAL, THE CONTRACTOR SHALL WORK FROM UPSTREAM TO DOWNSTREAM ANDIN-STREAM STRUCTURES AND CHANNEL FILL MATERIAL SHALL BE INSTALLED USINGA PUMP-AROUND OR FLOW DIVERSION MEASURE AS SHOWN ON THE PLANS.9.THE CONTRACTOR WILL BEGIN CONSTRUCTION BY EXCAVATING CHANNEL FILLMATERIAL IN AREAS ALONG THE EXISTING CHANNEL. THE CONTRACTOR MAY FILLDITCHES WHICH DO NOT CONTAIN ANY WATER DURING THE GRADING OPERATIONS.ALONG DITCHES WITH WATER OR STREAM REACHES, EXCAVATED MATERIALSHOULD BE STOCKPILED IN DESIGNATED AREAS SHOWN ON THE PLANS. IN ANYAREAS WHERE EXCAVATION DEPTHS WILL EXCEED TEN INCHES, TOPSOIL SHALL BESEPARATED, STOCKPILED AND PLACED BACK OVER THESE AREAS TO A DEPTH OFEIGHT INCHES TO ACHIEVE DESIGN GRADES AND CREATE A SOIL BASE FORVEGETATION PLANTING ACCORDING TO THE DESIGN PLANS AND CONSTRUCTIONSPECIFICATIONS.10.CONTRACTOR SHALL BEGIN DESIGN CHANNEL CONSTRUCTION AT STATION 10+00AND PROCEED IN A DOWNSTREAM DIRECTION. THE DESIGN CHANNEL SHOULD BECONSTRUCTED OFFLINE AND/OR IN THE DRY WHENEVER POSSIBLE.11.AFTER EXCAVATING THE CHANNEL TO DESIGN GRADES, INSTALL IN-STREAMSTRUCTURES, GRASSING, MATTING, AND TEMPORARY VEGETATION IN THISSECTION, AND READY THE CHANNEL TO ACCEPT FLOW PER APPROVAL BY THEENGINEER.12.FLOWING WATER MAY BE TURNED INTO THE CONSTRUCTED CHANNEL ONCE THEAREA IN AND AROUND THE NEW CHANNEL HAS BEEN STABILIZED. IMMEDIATELYBEGIN PLUGGING, FILLING, AND GRADING THE ABANDONED CHANNEL, AS INDICATEDON PLANS, MOVING IN A DOWNSTREAM DIRECTION TO ALLOW FOR DRAINAGE OFTHE OLD CHANNELS. NO FLOWING WATER SHALL BE TURNED INTO ANY SECTION OFRESTORED CHANNEL PRIOR TO THE CHANNEL BEING COMPLETELY STABILIZEDWITH ALL IN-STREAM STRUCTURES INSTALLED.13.THE NEW CHANNEL SECTIONS SHALL REMAIN OPEN ON THE DOWNSTREAM END TOALLOW FOR DRAINAGE DURING RAIN EVENTS.14.ANY GRADING ACTIVITIES ADJACENT TO THE EXISTING OR LIVE STREAM CHANNELSHALL BE COMPLETED PRIOR TO TURNING WATER INTO THE NEW STREAM CHANNELSEGMENTS. GRADING ACTIVITIES SHALL NOT BE PERFORMED WITHIN 10 FEET OFTHE NEW STREAM CHANNEL BANKS. THE CONTRACTOR SHALL NOT GRADE ORROUGHEN ANY AREAS WHERE EXCAVATION ACTIVITIES HAVE NOT BEENCOMPLETED.15.ONCE A STREAM WORK PHASE IS COMPLETE, APPLY TEMPORARY SEEDING TO ANYAREAS DISTURBED DURING CONSTRUCTION WITHIN HOURS AND ALL SLOPESSTEEPER THAN 3:1 SHALL BE STABILIZED WITH GROUND COVER AS SOON ASPRACTICABLE WITHIN 7 CALENDAR DAYS. ALL OTHER DISTURBED AREAS ANDSLOPES FLATTER THAN 3:1 SHALL BE STABILIZED WITHIN 14 CALENDAR DAYS FROTHE LAST LAND-DISTURBING ACTIVITY.16.PERMANENT SEEDING SHALL BE PLACED ON ALL DISTURBED AREAS WITHIN 15WORKING DAYS OR 90 CALENDAR DAYS (WHICHEVER IS SHORTER) FOLLOWINGCOMPLETION OF CONSTRUCTION. ALL DISTURBED AREAS SHOULD HAVEESTABLISHED GROUND COVER PRIOR TO DEMOBILIZATION. REMOVE ANYTEMPORARY STREAM CROSSINGS AND TEMPORARY EROSION CONTROL MEASURES.17.THE CONTRACTOR SHALL TREAT AREAS OF INVASIVE SPECIES VEGETATIONTHROUGHOUT THE PROJECT AREA ACCORDING TO THE DESIGN PLANS ANDCONSTRUCTION SPECIFICATIONS PRIOR TO DEMOBILIZATION.18.THE CONTRACTOR SHALL PLANT WOODY VEGETATION AND LIVE STAKES,ACCORDING TO PLANTING DETAILS AND SPECIFICATIONS. THE CONTRACTOR SHALLCOMPLETE THE REFORESTATION PHASE OF THE PROJECT AND APPLY PERMANENTSEEDING AT THE APPROPRIATE TIME OF THE YEAR.19.THE CONTRACTOR SHALL BE RESPONSIBLE FOR OFF-SITE REMOVAL OF ALL TRASH,EXCESS BACKFILL, AND ANY OTHER INCIDENTAL MATERIALS PRIOR TODEMOBILIZATION OF EQUIPMENT FROM THE SITE. THE DISPOSAL AND STOCKPILELOCATIONS SELECTED MUST BE APPROVED TO THE ENGINEER AND ANY FEESSHALL BE PAID FOR BY THE CONTRACTOR.BOULDER STEP POOLPR O F ESSIONALSEAL36916ENGINEE R N O R THCAROLINACHRISTOPAT O M . ICHERSNO.REVISIONSDATEPROJECT NAMESHEET NUMBERDESIGNED BY :DRAWN BY :DATE :PROJECT NO. :FILENAME :DRAWING INFORMATIONSHEET NAMEHORIZ. SCALE :VERT. SCALE :PROJECT ENGINEERAENGINEERING SERVICES BYWLS ENGINEERING, PLLCFIRM LICENSE NO. P-1480BCDEFWATER & LAND SOLUTIONS7721 Six Fork Rd., Suite 130Raleigh, NC 27614(919)614-5111waterlandsolutions.comDRAFT MIT PLAN12-13-18SURRY COUNTY, NCDRAFT FINAL MIT PLAN5-8-19FINAL MIT PLAN7-26-19N O T F O R C O N S T R U C T I O N P R E L IM I N A R Y P L A N S27/26/19100026CAT/APLLEGENDCONSTRUCTIONSEQUENCEGENERALNOTES02_HORNE CREEK_GENERAL NOTES - SYMBOLS_SHEET.DWGHORNE CREEKTRIBUTARIESMITIGATIONPROJECTCATN/AN/A// Reach NameR1R2R3R4R4AR4BR5FeatureRifflePoolRifflePoolRifflePoolRifflePoolRifflePoolRifflePoolRifflePoolOUTLETCHANNELWidth of Bankfull, Wbkf (ft)7.09.06.09.06.08.09.012.06.08.03.54.010.016.03.00Average Depth, Dbkf (ft)0.40.70.50.70.40.60.60.90.40.60.20.40.71.0NAMaximum Depth, D-Max (ft)0.61.20.61.00.50.90.81.70.50.90.30.50.92.00.50Width to Depth Ratio, bkf W/D17.012.313.112.516.012.915.612.916.012.914.910.713.915.6NABankfull Area, Abkf (sq ft)2.96.62.86.52.35.05.211.22.35.00.81.57.216.4NABottom Width, Wb (ft)3.53.54.04.03.03.04.04.03.03.02.02.06.06.0NARIFFLEWbkfD-maxWbRIFFLE WITH BANKFULL BENCHWbkfD-maxWbVARIESVARIES2:1 2:1TOP OF TERRACED-maxWbkfMEANDER POOLWbD-maxWbkfMEANDER POOL WITH BANKFULL BENCHWb2:1VARIESVARIESTOP OF TERRACEEXISTINGGROUNDEXISTINGGROUNDEXISTINGGROUNDEXISTINGGROUNDPROPOSEDGROUNDPROPOSEDGROUNDPROPOSEDGROUNDPROPOSEDGROUNDN.T.SN.T.SN.T.SN.T.S2:1 OUTLET CHANNELWbkfD-max3:13:1WbEXISTINGGROUNDPROPOSEDGROUNDN.T.SPR O F ESSIONALSEAL36916ENGINEE R N O R THCAROLINACHRISTOPAT O M . ICHERSNO.REVISIONSDATEPROJECT NAMESHEET NUMBERDESIGNED BY :DRAWN BY :DATE :PROJECT NO. :FILENAME :DRAWING INFORMATIONSHEET NAMEHORIZ. SCALE :VERT. SCALE :PROJECT ENGINEERAENGINEERING SERVICES BYWLS ENGINEERING, PLLCFIRM LICENSE NO. P-1480BCDEFWATER & LAND SOLUTIONS7721 Six Fork Rd., Suite 130Raleigh, NC 27614(919)614-5111waterlandsolutions.comDRAFT MIT PLAN12-13-18SURRY COUNTY, NCDRAFT FINAL MIT PLAN5-8-19FINAL MIT PLAN7-26-19N O T F O R C O N S T R U C T I O N P R E L IM I N A R Y P L A N S3100026CAT/APLTYPICALSECTIONSN/A03_HORNE CREEK_TYPICAL_SECTIONS.DWGHORNE CREEKTRIBUTARIESMITIGATIONPROJECTCATN/ASTEP POOL WITH BANKFULL BENCHWbkfD-maxWbVARIESVARIES2:1 2:1TOP OF TERRACEEXISTINGGROUNDPROPOSEDGROUNDN.T.SSTEP POOLWbkfD-maxWbEXISTINGGROUNDPROPOSEDGROUNDN.T.S7/26/19VARIES1.85:1 TO 3.18:1VARIES1.85:1 TO 3.18:1VARIES1.85:1 TO 3.18:1VARIES1.85:1 TO 3.18:1VARIES2:1 TO 3.85:1VARIES2:1 TO 3.85:1VARIES2:1 TO 3.85:1VARIES2:1 TO 3.85:1VARIES1.5:1 TO 2:1VARIES3.5:1 TO 6.15:1VARIES1.5:1 TO 2:1VARIES3.5:1 TO 6.15:1 NOTES:1.THE TRENCHING METHOD REQUIRES THAT A TRENCH BE EXCAVATED FORTHE LOG PORTION OF THE ROOTWAD. A COVER LOG SHOULD BE INSTALLEDUNDERNEATH THE ROOTWAD IN A TRENCH EXCAVATED PERPENDICULARTO THE BANK AND BELOW THE RESTORED STREAMBED. ONE-THIRD OF THEROOTWAD SHOULD REMAIN BELOW NORMAL BASE FLOW CONDITIONS.ROOTWADSPLAN VIEWROOTWAD (TYP.)FLOWTRANSPLANTSBANKFULL STAGEBASE FLOWOPTIONALCOVER LOGROOTWADTRANSPLANTSRESTOREDSTREAMBANKBERM (0.5' MAX. HT.)NOT TO EXTEND BEYONDLIMITS OF ROOTWADS.> 1/2 OF ROOT MASSIS BELOW BASE FLOWSECTION A-ATOP OFSTREAMBANKBASE FLOWROOTWADS WITH TRANSPLANTSBANKFULL STAGERESTOREDSTREAMBANKBERM (0.5' MAX. HT.) BERM(S)NOT TO EXTEND BEYONDLIMITS OF ROOTWADS.> 1/2 OF ROOT MASSIS BELOW BASE FLOWROOTWADROOTWADS WITHOUT TRANSPLANTSSECTION A-ACOVER LOG(OPTIONAL)SCOURPOOLAEROSION CONTROL MATTINGATOP OFSTREAMBANKTOP OFSTREAMBANKENTIRE ROOTWAD TRUNK ISBELOW STREAMBED.COVER LOG(OPTIONAL)ENTIRE ROOTWAD TRUNK ISBELOW STREAMBED.NOT TO SCALENOTES:1. LOGS SHOULD BE AT LEAST 10" IN DIAMETER, RELATIVELY STRAIGHT, HARDWOOD, AND RECENTLY HARVESTED.2. SOIL SHOULD BE COMPACTED WELL AROUND BURIED PORTIONS OF LOGS.3. ROOTWADS SHOULD BE PLACED BENEATH THE HEADER LOG AND PLACED SO THAT IT LOCKS THE HEADER LOG INTO THE BANK. SEE ROOTWAD DETAIL.4. BOULDERS OF SUFFICIENT SIZE CAN PLACED ON TOP OF HEADER LOG FOR ANCHORING, PER DIRECTION OF ENGINEER.5. LOGS SHOULD BE BURIED INTO THE STREAM BED AND BANKS AT LEAST 5 FEET.6. GEOTEXTILE FABRIC SHOULD BE NAILED TO THE LOG BELOW THE BACKFILL.7. TRANSPLANTS CAN BE USED INSTEAD OF ROOTWADS, PER DIRECTION OF ENGINEER.LOG VANEPLAN VIEWSECTION A-APROFILE B-BAAFLOWSCOURPOOL2/3 BANKFULLSTAGENON-WOVENGEOTEXTILE FABRICROOT WADBURY LOGS INTOBANK AT LEAST 5'4% TO 7%ARM SLOPEFOOTER LOG(OPTIONAL)HEADERLOG1'2/3 BANKFULL STAGEFLOWRESTORED STREAMBED ELEVATIONBOULDER(OPTIONAL)ARM ANGLE20° TO 30°BOULDER(OPTIONAL)BTOP OF STREAM BANKBINVERT/GRADE POINTHEADERLOGSTONE BACKFILLNON-WOVENGEOTEXTILE FABRIC5' MINIMUMFOOTER LOG(OPTIONAL)STREAMBEDSCOURPOOLINVERTELEVATIONTOP OF STREAM BANKFLOWROOT WADNOT TO SCALEAABBFLOWBEGIN STEP INVERTELEVATIONSTONEBACKFILLLARGESTONEBACKFILLALONG TOETOE OFSTREAM BANKTOP OF STREAM BANKPOOL WIDTH(1.3X BANKFULLWIDTH)POOL TO POOL SPACINGVARIES. SEE NOTE #9 FOR POOLSPACING REQUIREMENTS.STEP INVERTELEVATIONFLOWH = STEPHEIGHTNON-WOVENGEOTEXTILEFABRICPOOLPROFILE B-BSTONE AND LOG STEP POOL BASEFLOWBANKFULL STAGERESTOREDSTREAMBEDHEADERLOGFOOTERLOGSECTION A-ASET INVERT ELEVATIONBASED ON DESIGN PROFILETRANSPLANTSOR LIVE STAKESBANKFULL STAGETOP OF STREAM BANKBASEFLOW BURY INTOBANK 5'MINIMUM(TYP.)1% - 2% CROSS SLOPEEND STEP INVERTELEVATIONSCOURPOOLSCOURPOOLNOTES: LARGE STONEBACKFILL5' MINIMUMPLAN VIEW10. INTERIOR LOGS SHOULD BE AT A SLIGHT ANGLE (~70 DEGREES) FROM THESTREAMBANK AND CROSS SLOPES SHOULD BE 1-2%.11. PLACE FOOTER LOGS FIRST AND THEN HEADER (TOP) LOG. SET HEADERLOG AT A MAXIMUM OF 3 INCHES ABOVE THE INVERT ELEVATION.12. AVERAGE STEP HEIGHTS/DROPS SHALL NOT EXCEED 0.5 UNLESS SHOWNOTHERWISE.13. CUT A NOTCH IN THE HEADER LOG APPROXIMATELY 30% OF THE CHANNELBOTTOM WIDTH AND EXTENDING DOWN TO THE INVERT ELEVATION. NOTCHSHALL BE USED TO CENTER FLOW AND NOT EXCEED 3 INCHES IN DEPTH.14. THE NUMBER OF STEPS MAY VARY BETWEEN BEGINNING AND ENDSTATIONING. SEE LONGITUDINAL PROFILE FOR STATION AND ELEVATION.15. USE GEOTEXTILE FABRIC FOR DRAINAGE TO SEAL GAPS BETWEEN LOGS.16. PLACE VEGETATION TRANSPLANTS FROM TOE OF STREAMBANK TO TOP OFSTREAMBANK.17. SEE TYPICAL SECTION FOR CHANNEL DIMENSIONS.1.LOGS SHOULD BE AT LEAST 12 INCHES IN DIAMETER, RELATIVELY STRAIGHT HARDWOOD ANDRECENTLY HARVESTED.2.LOGS >24 INCHES IN DIAMETER MAY BE USED ALONE WITHOUT AN ADDITIONAL LOG FILTER FABRICSHOULD STILL BE USED TO SEAL AROUND LOG. LOGS SHOULD EXTEND INTO THE BANKS 5' ON EACHSIDE.3. SOIL SHALL BE WELL COMPACTED AROUND BURIED PORTION OF FOOTER LOGS WITH BUCKET OFTRACK HOE.4. INSTALL GEOTEXTILE FILTER FABRIC UNDERNEATH LOGS.5. UNDERCUT POOL BED ELEVATION 8 INCHES TO ALLOW FOR LAYER OF STONE. INSTALL LARGE STONEBACKFILL ALONG SIDE SLOPES.6. INSTALL EROSION CONTROL MATTING ALONG COMPLETED BANKS SUCH THAT THE EROSION CONTROLMATTING AT THE TOE OF THE BANK EXTENDS DOWN TO THE UNDERCUT ELEVATION.7. INSTALL LARGE STONE BACKFILL ALONG SIDE SLOPES.8. FINAL CHANNEL BED SHAPE SHOULD BE ROUNDED, COMPACTED, AND CONCAVE, WITH THE ELEVATIONOF THE BED APPROXIMATELY 0.5 FT DEEPER IN THE CENTER THAN AT THE EDGES.9. AVERAGE POOL TO POOL SPACING SHALL BE SHOWN ON THE PROFILE OR SPECIFIED BY ENGINEERBASED ON EXISTING CONDITIONS SUCH AS SLOPE AND SUITABLE FILL MATERIAL. RIFFLE STEP-POOLSOR CASCADE POOLS MAY BE SUBSTITUTED IN AREAS WHERE EXISTING SLOPES EXCEED 10% ASDETERMINED BY THE ENGINEER.NOT TO SCALEEROSION CONTROLMATTINGLOG WEIRBBAAINVERTELEVATION~1.3X CHANNEL WIDTHPOOL LENGTH FLOWSCOURPOOLPLAN VIEWNOTES: 1.LOGS SHOULD BE AT LEAST 12 INCHES IN DIAMETER, RELATIVELY STRAIGHTHARDWOOD AND RECENTLY HARVESTED.2.LOGS >24 INCHES IN DIAMETER MAY BE USED ALONE WITHOUT ANADDITIONAL LOG FILTER FABRIC SHOULD STILL BE USED TO SEAL AROUNDLOG, AT THE DIRECTION OF THE ENGINEER.3.PLACE FOOTER LOGS FIRST AND THEN HEADER (TOP) LOG. SET HEADERLOG AT A MAXIMUM OF 3 INCHES ABOVE THE INVERT ELEVATION.4.CUT A NOTCH IN THE HEADER LOG APPROXIMATELY 30% OF THE CHANNELBOTTOM WIDTH AND EXTENDING DOWN TO THE INVERT ELEVATION. NOTCHSHALL BE USED TO CENTER FLOW AND NOT EXCEED 3 INCHES IN DEPTH.5.USE GEOTEXTILE FABRIC FOR DRAINAGE TO SEAL GAPS BETWEEN LOGS.6.INSTALL VEGETATION TRANSPLANTS FROM TOE OF STREAM BANK TO TOPOF STREAM BANK.7.SEE TYPICAL SECTION FOR CHANNEL DIMENSIONS.HEADERLOGFOOTERLOGSECTION A-ASET INVERT ELEVATIONBASED ON DESIGN PROFILETRANSPLANTSOR LIVE STAKESBANKFULL STAGETOP OF STREAM BANKBASEFLOWPROFILE B-BSTONE BACKFILLNON-WOVENGEOTEXTILE FABRIC5' MINIMUMFOOTER LOGSTREAMBEDSCOURPOOLINVERTELEVATIONTOP OF STREAM BANKTOP OF STREAM BANKFLOW BURY INTOBANK 5'MINIMUM(TYP.) BURY INTOBANK 5'MINIMUM(TYP.)HEADER LOGNOT TO SCALEEROSION CONTROLMATTINGPR O F ESSIONALSEAL36916ENGINEE R N O R THCAROLINACHRISTOPAT O M . ICHERSNO.REVISIONSDATEPROJECT NAMESHEET NUMBERDESIGNED BY :DRAWN BY :DATE :PROJECT NO. :FILENAME :DRAWING INFORMATIONSHEET NAMEHORIZ. SCALE :VERT. SCALE :PROJECT ENGINEERAENGINEERING SERVICES BYWLS ENGINEERING, PLLCFIRM LICENSE NO. P-1480BCDEFWATER & LAND SOLUTIONS7721 Six Fork Rd., Suite 130Raleigh, NC 27614(919)614-5111waterlandsolutions.comDRAFT MIT PLAN12-13-18SURRY COUNTY, NCDRAFT FINAL MIT PLAN5-8-19FINAL MIT PLAN7-26-19N O T F O R C O N S T R U C T I O N P R E L IM I N A R Y P L A N S47/26/19100026CAT/APLDETAILS04-07_HORNE_CREEK_DETAILS.DWGHORNE CREEKTRIBUTARIESMITIGATIONPROJECTCATN/AN/A CONSTRUCTED LOG RIFFLEFLOWFOOTERLOGHEADERLOGSTREAMBEDSTREAMBEDPRIMARYLOGSSECONDARY LOGSAND WOODY DEBRISHEADERLOGBACKFILL WITHON-SITE ALLUVIUMNON-WOVENGEOTEXTILE FABRIC(TYPICAL) BACKFILL WITHSUITABLE ON-SITEALLUVIUMPROFILE B-B5' MINIMUM5' MINIMUMH ≤ 0.3'HEADERLOGFOOTERLOGSECTION A-ASET INVERT ELEVATION BASEDON DESIGN PROFILE5' MINIMUMBURIED INTOBANK5' MINIMUMBURIED INTOBANKBBAAFLOWBEGIN INVERTELEVATIONTRANSPLANTSOR LIVE STAKESHEADERLOGPRIMARY LOGS SPACEEVERY 8'-12'END INVERTELEVATIONSECONDARY LOGSAND WOODY DEBRISPLAN VIEW1. PRIMARY LOGS SHOULD BE AT LEAST 12" OR MORE IN DIAMETER, RELATIVELY STRAIGHT, HARDWOOD AND RECENTLY HARVESTED AND EXTENDING INTO THE BANK 5' ON EACH SIDE.2. SECONDARY LOGS SHOULD BE AT LEAST 4" IN DIAMETER AND NO LARGER THAN 10" AND EXTEND INTO THE BANK 3' ON EACH SIDE. WOODY DEBRIS MATERIAL SHALL BE VARYING DIAMETER TO ALLOWMATERIAL TO BE COMPACTED.3. NON-WOVEN GEOTEXTILE FABRIC SHOULD BE NAILED TO THE HEADER LOG BELOW THE BACKFILL.4. ROOT WADS AND EROSION CONTROL MATTING CAN BE USED INSTEAD OF TRANSPLANTS OR LIVE STAKES PER DIRECTION OF ENGINEER.5. AFTER TRENCH HAS BEEN EXCAVATED A LAYER OF SECONDARY LOGS AND WOODY DEBRIS SHOULD BE PLACED WITH MINIMAL GAPS. A LAYER OF ON-SITE ALLUVIUM SHOULD BE APPLIED TO FILL VOIDS BETWEEN SECONDARY LOGS BEFORE ADDITIONAL LAYERS ARE PLACED.6. SEE TYPICAL SECTION FOR CHANNEL DIMENSIONS.NOTES:BANKFULL STAGETOP OF STREAM BANKTOP OF STREAM BANKBASEFLOWH ≤ 0.3'TOE OF STREAM BANK24" MINIMUM DEPTHBASEFLOWNOT TO SCALEEROSION CONTROLMATTINGSECTION A - APLAN VIEWANOTES:WATER QUALITY TREATMENT FEATURE18" POOL DEPTHASLOPE VARIES(3:1 MAX.)NOT TO SCALECONSTRUCT EMBANKMENT WITHCOMPACTED SOIL AND SUITABLEBACKFILL MATERIAL (TYP.)PROPOSED BOTTOMOUTLET CHANNELINFLOWSTORAGE VOLUME ELEVATIONFINISHED GRADE8" THICK STONE SPILLWAY(OPTIONAL AS DIRECTEDBY ENGINEER)3:13:1EXISTING GRADE1.CONSTRUCT EMBANKMENT WITH COMPACTED SOIL ANDSUITABLE MATERIAL IN ACCORDANCE WITH TECHNICALSPECIFICATIONS.2.WATER QUALITY TREATMENT FEATURE VARIES IN SIZE ANDSHAPE AS SHOWN ON PLANS.3.PLANT APPROPRIATE WETLAND SPECIES VEGETATION AS SPECIFIED IN THE PLANTING PLAN.4' WIDEEMBANKMENT4' WIDE EMBANKMENT WITHSTONE COVER (OPTIONAL ASDIRECTED BY ENGINEER)GRADE SIDE SLOPES NO STEEPER THAN 3H:1VINFLOWPROPOSEDOUTLET CHANNEL(WIDTH VARIES)SHALLOWPOOLSHALLOWPOOLPR O F ESSIONALSEAL36916ENGINEE R N O R THCAROLINACHRISTOPAT O M . ICHERSNO.REVISIONSDATEPROJECT NAMESHEET NUMBERDESIGNED BY :DRAWN BY :DATE :PROJECT NO. :FILENAME :DRAWING INFORMATIONSHEET NAMEHORIZ. SCALE :VERT. SCALE :PROJECT ENGINEERAENGINEERING SERVICES BYWLS ENGINEERING, PLLCFIRM LICENSE NO. P-1480BCDEFWATER & LAND SOLUTIONS7721 Six Fork Rd., Suite 130Raleigh, NC 27614(919)614-5111waterlandsolutions.comDRAFT MIT PLAN12-13-18SURRY COUNTY, NCDRAFT FINAL MIT PLAN5-8-19FINAL MIT PLAN7-26-19N O T F O R C O N S T R U C T I O N P R E L IM I N A R Y P L A N S57/26/19100026CAT/APLDETAILS04-07_HORNE_CREEK_DETAILS.DWGHORNE CREEKTRIBUTARIESMITIGATIONPROJECTCATN/AN/APOOL SECTION A-AAABBCCFLOW STEP INVERTELEVATIONFOOTERBOULDERHEADERBOULDERSTONEBACKFILLLARGESTONEBACKFILLALONG TOE1. FOOTER BOULDERS SHALL BE INSTALLED SUCH THAT 1/4 OF THE LENGTHIS DOWNSTREAM OF THE HEADER BOULDERS.2. SOIL SHALL BE WELL COMPACTED AROUND BURIED PORTION OF FOOTERBOULDERS WITH BUCKET OF TRACK HOE.3. INSTALL GEOTEXTILE FILTER FABRIC UNDERNEATH FOOTER BOULDERS.4. UNDERCUT POOL BED ELEVATION 8 INCHES TO ALLOW FOR LAYER OFSTONE.5. INSTALL EROSION CONTROL MATTING ALONG COMPLETED BANKS SUCHTHAT THE EROSION CONTROL MATTING AT THE TOE OF THE BANKEXTENDS DOWN TO THE ELEVATION OF THE BOTTOM OF THE HEADERBOULDERS AND LARGE STONE BACKFILL AT THE TOE.6. INSTALL LARGE STONE BACKFILL ALONG SIDE SLOPES.7. FINAL CHANNEL BED SHAPE SHOULD BE ROUNDED, COMPACTED, ANDCONCAVE, WITH THE ELEVATION OF THE BED APPROXIMATELY 0.5 FTDEEPER IN THE CENTER THAN AT THE EDGES.8. AVERAGE STEP HEIGHT (H) SHALL NOT EXCEED 0.5 FT.9. AVERAGE POOL TO POOL SPACING SHALL BE SHOWN ON THE PROFILE ORSPECIFIED BY ENGINEER BASED ON EXISTING CONDITIONS SUCH ASSLOPE AND SUITABLE FILL MATERIAL. RIFFLE STEP-POOLS OR CASCADEPOOLS MAY BE SUBSTITUTED IN AREAS WHERE EXISTING SLOPESEXCEED 5% AS DETERMINED BY THE ENGINEER.ACTUAL NUMBER OFBOULDERS MAY VARYTOE OFSTREAM BANKTOP OF STREAM BANKBACK OFBENCHPOOL WIDTH(1.3X BANKFULLWIDTH)POOL TO POOL SPACINGVARIES. SEE NOTE #9 FORSPACING REQUIREMENTS.FOOTERBOULDERHEADERBOULDERSTEP INVERTELEVATIONSTONEBACKFILLFLOWH = STEPHEIGHTNON-WOVENGEOTEXTILEFABRICPOOLSTEPPROFILE C-CSTONEBACKFILLEXISTINGGROUND2:12:1 2:1 POOL WIDTH(1.3X BANKFULL WIDTH)2:1EROSION CONTROLMATTINGD = POOLDEPTHSTEP SECTION B-BEXISTINGGROUND2:1BACK OF BENCH(WIDTH VARIES)BANKFULL(WIDTH VARIES)2:12:1 2:1 EROSION CONTROLMATTING (STOPS BEHINDHEADER BOLDERS)NON-WOVENGEOTEXTILE FABRIC(START BEHINDHEADER BOULDERS)FOOTERBOULDERHEADERBOULDERSTEPINVERTNOTES:BASEFLOWBANKFULL STAGEBACK OF BENCH(WIDTH VARIES)LARGE STONEBACKFILLALONG TOETOP OF RESTOREDSTREAM BANKBOULDER STEP-POOLNOT TO SCALEPERMANENT CULVERT STREAM CROSSINGNOT TO SCALEPIPE CULVERTINSTALL 8" THICK ABCSTONE OR EQUIVALENTFOR FARM PATH COVER13132% MAX2% MAX2'6'CL2'6'NOTES:1. INSTALL PIPE CULVERT(S) IN ACCORDANCE WITH DETAILSPECIFICATIONS. SEE PLANS FOR NUMBER, SIZE AND LENGTH.2. INSTALL COIR FIBER MATTING FOR EROSION CONTROL ALONGFILL SLOPES IN ACCORDANCE WITH DETAIL SPECIFICATIONS.3. PIPE CULVERTS ARE TO BE A MINIMUM OF 24" COVER ANDSPACING IN ACCORDANCE WITH DETAIL SPECIFICATIONS.MATTING FOR EROSIONCONTROL SLOPESCOMPACTEDEARTHEN FILLVARIES3:13 : 1 RELOCATED FARMPATHNATURALGROUNDAPPLY CLASS B STONETO FILL SLOPESAROUND FLOOD PLAINCULVERTS.MIN. 24"COVERBANKFULL ELEVATIONVARIESVARIESBURY PIPE BELOW THE STREAM BED ELEVATION AS SHOWN ON PLANSPROPOSEDSTREAM BED PLAN VIEWGEOLIFT W/ TOE WOODBASEFLOWRESTORED STREAMBED POINT BAR (SEE TYPICAL SECTIONS)TOP OF RESTORED STREAM BANK4' DEEP (TYP.)STAKE TOP LAYER OFEROSION CONTROLMATTING IN 6" TRENCH(SEE COIR FIBER MATTINGDETAIL)INSTALL FOUNDATION LOGSSUCH THAT AT LEAST HALF OFTHE LOG DIAMETER IS BELOWTHE RESTORED STREAMBEDELEVATION.SLOPE VARIESCOVER LOGS AND/OR ROOT WADSINSTALLED IN LOCATIONS AS SHOWN ONPLANS AND PER RESPECTIVE DETAILSPLACE THICK LAYEROF 1"- 6" DIAMETERWOODY DEBRISLIVE BRANCH CUTTINGS (SEEPLANTING PLAN FOR SPECIES)EROSION CONTROL MATTINGENCOMPASSES LIFTBANKFULL STAGEADD BOULDERS OR OTHER APPROVEDCOUNTERWEIGHT TO PREVENT WOODFROM FLOATINGSECTION A - AFLOWFOUNDATION LOGS TO BE INSTALLEDAT ANGLES SHOWN BETWEEN 15-25°EXTEND WOODY DEBRIS MATERIALTO 1/4 BANKFULL WIDTHAATOP OF RESTORED STREAM BANKBACKFILL 1.5' LIFT OF COMPACTEDON-SITE SOIL (TYP.)SCOURPOOLHORIZONTAL SETBACK FOR LIFT ISAPPROX. 1 FT.NOT TO SCALETOE OF STREAMBANKLIVE STAKINGLIVE STAKEPLAN VIEW OF STREAM BANKSECTION A - AAATOE OF STREAMBANKTOP OF STREAMBANKLIVE STAKE DETAIL2' TO 3' LENGTHSQUARE CUT TOPBUDS FACING UPWARDLIVE STAKEPLANT LIVESTAKES FROMTOP OFSTREAM BANKTO TOE OFSTREAM BANKIN A DIAMONDSHAPED,STAGGEREDPATTERN TOSPECIFIEDSPACING1. LIVE STAKES SHOULD BE CUT AND INSTALLED ON THE SAME DAY.2. DO NOT INSTALL LIVE STAKES THAT HAVE BEEN SPLIT.3. LIVE STAKES MUST BE INSTALLED WITH BUDS POINTING UPWARDS.4. LIVE STAKES SHOULD BE INSTALLED PERPENDICULAR TO BANK.5. LIVE STAKES SHOULD BE 1/2 TO 2 INCHES IN DIAMETER AND 2 TO 3 FEET LONG.6. LIVE STAKES SHOULD BE INSTALLED LEAVING 1/5 OF THE LENGTH OF THE LIVE STAKE ABOVE GROUND.6' TO 8' SPACING2' TO 3' SPACINGNO LIVE STAKES ON POINT BARTOP OF STREAMBANKTOE OF STREAMBANKLIVE STAKE SPACING PLAN VIEWTOP OF STREAMBANKRESTORED STREAMBEDANGLE CUT 30 TO45 DEGREESLIVE CUTTINGMINIMUM 1/2"DIAMETERNO LIVE STAKESRESTORED STREAMBEDBANKFULL STAGEBASEFLOWTHALWEGNOTES:F L OWNOT TO SCALECHANNEL BLOCKCHANNEL TO BERELOCATEDAAOLD FLOWNEW FLOW DIRECTION100' MINIMUMPLAN VIEWOLD FLOWFINISHED GRADEUNCOMPACTEDFILL 1.5' MINIMUMCOMPACTEDBACKFILLNEW STREAMBANKSHALL BE TREATED ASSPECIFIED IN PLANSCHANNEL INVERTOPTIONAL ROOT WADPLACEMENT AS DIRECTEDBY ENGINEER21SECTION A-A1. COMPACT BACKFILL USING ON-SITE HEAVY EQUIPMENT IN 10 INCH LIFTS.2. FILL DITCH PLUG TO TOP OF BANKS OR AS DIRECTED BY ENGINEER.CHANNEL BLOCKNOTES:TOP OF STREAMBANKNOT TO SCALEGLIDERIFFLEFLOW POOLNOTES:16" MIN. THICKNESSSTONE BACKFILL16" MIN. THICKNESSSTONE BACKFILL1. DIG A TRENCH BELOW THE RESTORED STREAMBED FOR THE STONE BACKFILL.2. FILL TRENCH WITH STONE BACKFILL.16" MIN. THICKNESSSTONE BACKFILLCONSTRUCTED STONE RIFFLEBSECTION A-APLAN VIEWPROFILE B-BAATOE OF STREAM BANKEROSION CONTROLMATTING SHOULD BEPLACED BENEATH STONEBACKFILLHEAD OF RIFFLEINVERT ELEVATIONHEAD OF RIFFLEINVERT ELEVATIONBASEFLOWBANKFULL STAGERIFFLE Dmax = MAX DEPTHTOP OF STREAM BANKTOP OF STREAM BANKRUNTAIL OF RIFFLEINVERT ELEVATIONTAIL OF RIFFLEINVERT ELEVATIONTOE OF STREAMBANKFLOW BOTTOM WIDTH OFCHANNELBBANKFULL STAGENOT TO SCALEPR O F ESSIONALSEAL36916ENGINEE R N O R THCAROLINACHRISTOPAT O M . ICHERSNO.REVISIONSDATEPROJECT NAMESHEET NUMBERDESIGNED BY :DRAWN BY :DATE :PROJECT NO. :FILENAME :DRAWING INFORMATIONSHEET NAMEHORIZ. SCALE :VERT. SCALE :PROJECT ENGINEERAENGINEERING SERVICES BYWLS ENGINEERING, PLLCFIRM LICENSE NO. P-1480BCDEFWATER & LAND SOLUTIONS7721 Six Fork Rd., Suite 130Raleigh, NC 27614(919)614-5111waterlandsolutions.comDRAFT MIT PLAN12-13-18SURRY COUNTY, NCDRAFT FINAL MIT PLAN5-8-19FINAL MIT PLAN7-26-19N O T F O R C O N S T R U C T I O N P R E L IM I N A R Y P L A N S67/26/19100026CAT/APLDETAILS04-07_HORNE_CREEK_DETAILS.DWGHORNE CREEKTRIBUTARIESMITIGATIONPROJECTCATN/AN/A GRADE CONTROL LOG J-HOOK VANE1. LOGS SHOULD BE AT LEAST 18" IN DIAMETER, RELATIVELY STRAIGHT, HARDWOOD, AND RECENTLY HARVESTED.2. LOGS SHOULD BE BURIED INTO THE STREAM BED AND BANKS AT LEAST 5 FEET.3. SOIL SHOULD BE COMPACTED WELL AROUND BURIED PORTIONS OF LOGS.4. INSTALL GEOTEXTILE FABRIC BEGINNING AT THE TOP OF THE HEADER LOG AND EXTEND DOWNWARD TO THE DEPTH OF THE BOTTOM FOOTER LOG AND THEN UPSTREAM TO A MINIMUM OF FIVE FEET. GEOTEXTILE FABRIC SHOULD BE NAILED TO THE LOG BELOW THE BACKFILL.5. EXCAVATE A TRENCH BELOW THE BED FOR FOOTER LOG AND PLACE FILL ON UPSTREAM SIDE OF VANE ARM, BETWEEN THE ARM AND STREAMBANK.6. START AT BANK AND PLACE FOOTER BOULDERS FIRST AND THEN HEADER BOULDERS.7. CONTINUE WITH STRUCTURE, FOLLOWING ANGLE AND SLOPE SPECIFICATIONS.8. AN OPTIONAL COVER LOG CAN BE PLACED IN SCOUR POOL FOR HABITAT IMPROVEMENT AT DIRECTION OF ENGINEER.9. USE HAND PLACED STONE TO FILL GAPS ON UPSTREAM SIDE OF HEADER AND FOOTER BOULDERS.10. AFTER ALL STONE BACKFILL HAS BEEN PLACED, FILL IN THE UPSTREAM SIDE OF THE STRUCTURE WITH ON-SITE ALLUVIUM TO THE ELEVATION OF THE TOP OF THE HEADER BOULDER AND LOG.11. VEGETATION TRANSPLANTS CAN BE USED INSTEAD OF ROOTWADS, PER DIRECTION OF ENGINEER.1/3BOTTOMWIDTH OFCHANNEL1/3BOTTOMWIDTH OFCHANNELAASTONEBACKFILLTOE OF STREAMBANKPLAN VIEWFLOW SCOURPOOL1/3 - 1/4 BANKFULL STAGE 2/3 BANKFULL STAGENOTES:ARM ANGLE20° TO 30°BBSECTION A-APROFILE B-BHEADERLOGSTONE BACKFILLNON-WOVENGEOTEXTILE FABRIC5' MINIMUMGEOTEXTILEFABRICROOTWADLOGS BURIED INSTREAMBANKAT LEAST 5'4% TO 7%ARM SLOPEFOOTER LOG(OPTIONAL)HEADERLOG1'2/3 BANKFULL STAGEFLOWRESTORED STREAMBED ELEVATIONHEADERBOULDERFOOTER LOG(OPTIONAL)ROOTWADNOT TO SCALEHEADERBOULDERINVERT/ GRADE POINTVEGETATION TRANSPLANTS TOP OF STREAM BANKPLAN VIEW OF STREAM BANKRESTORED STREAMBEDSECTION A-ANOTES: 1. EXCAVATE A HOLE IN THE RESTORED STREAM BANK THAT WILL ACCOMMODATE THE SIZE OF TRANSPLANT TO BE PLANTED. BEGIN EXCAVATION AT TOE OF THE STREAM BANK.2. EXCAVATE THE ENTIRE TRANSPLANT ROOT MASS AND ASMUCH ADDITIONAL SOIL MATERIAL AS POSSIBLE. IF ENTIREROOT MASS CAN NOT BE EXCAVATED AT ONCE, THETRANSPLANT IS TOO LARGE AND ANOTHER SHOULD BESELECTED.3. PLANT TRANSPLANT IN THE RESTORED STREAM BANK SO THAT VEGETATION IS ORIENTATED VERTICALLY.4. FILL IN ANY HOLES OR VOIDS AROUND THE TRANSPLANT AND COMPACT.5. ANY LOOSE SOIL LEFT IN THE STREAM SHOULD BE REMOVED.6. WHEN POSSIBLE, PLACE MULTIPLE TRANSPLANTS CLOSE TOGETHER SUCH THAT THEIR ROOT MASSES CONTACT.TOE OF STREAM BANKTOE OF STREAM BANKTOP OF STREAM BANKTRANSPLANTED VEGETATION,WITH ROOTMASS, AND SOILMATERIALBANKFULL STAGEBASE FLOWTRANSPLANTED VEGETATION,WITH ROOTMASS, AND SOILMATERIALAARESTORED STREAMBEDNOT TO SCALEHEAD THICKNESSLEG LENGTHHEAD WIDTHLEG WIDTHLEG THICKNESSTOTAL LENGTH11.00 IN (27.94 CM)1.25 IN (3.18 CM)0.40 IN (1.02 CM)0.60 IN (1.52 CM) (TAPERED TO POINT)0.40 IN (1.02 CM)12.00 IN (30.48 CM)LENGTH24.00 IN ( 60.96 CM) (TAPERED TO POINT)WIDTHTHICKNESS1.5 IN (3.81 CM)1.5 IN (3.81 CM)RESTORED STREAMBEDTOE OF STREAM BANKINSTALL EDGE OF EROSION CONTROL MATTING IN 12 INCH DEEPTRENCH, AND SECURE BY STAKING, BACKFILLING, AND COMPACTINGSOIL TO FINISHED GRADE.TOP OF STREAM BANKLARGE MATTING STAKES (TYP.)TRENCH LIMITSEROSION CONTROL MATTINGSMALL MATTING STAKES (TYP.)LARGE MATTING STAKESSMALL MATTING STAKESTYPICAL LARGE MATTING STAKE2.5 INCH GALVANIZEDROOFING NAILTYPICAL SMALL MATTING STAKEPLAN VIEW OF STREAM BANKSECTION A - AAAEROSION CONTROLMATTING TO BEEXTENDED TO TOEOF SLOPETOP OF STREAM BANKSECURE EROSION CONTROLMATTING AT TOE OF SLOPEWITH LARGE MATTING STAKES.BANKFULL STAGEBASEFLOW24" MAX. TYP (TRENCH ONLY)36" MAX. TYPNOT TO SCALENOTES:1.RESTORED STREAM BANKS MUST BE SEEDED ANDMULCHED PRIOR TO PLACEMENT OF EROSION CONTROLMATTING.2.SEE TECHNICAL SPECIFICATIONS FOR MATTING STAKESPACING REQUIREMENTS.3.PLACE LARGE STAKES ALONG ALL MATTING SEAMS, INTHE CENTER OF STREAM BANK, AND TOE OF SLOPE.AABBFLOW BEGIN STEP INVERTELEVATIONSTONE BACKFILLOR SUITABLESOIL MATERIALTOE OFSTREAMBANKTOP OF STREAMBANKPOOL WIDTH(~1.3X BANKFULLWIDTH)POOL TO POOL SPACINGVARIES. SEE NOTE #9 FOR POOLSPACING REQUIREMENTS.STEP INVERTELEVATIONSTONEBACKFILLFLOWH = STEPHEIGHTNON-WOVENGEOTEXTILEFABRICPOOLPROFILE B-BLOG STEP POOL BASEFLOWBANKFULL STAGERESTOREDSTREAMBEDHEADERLOGFOOTERLOGSECTION A-ASET INVERT ELEVATIONBASED ON DESIGN PROFILETRANSPLANTSOR LIVE STAKESBANKFULL STAGETOP OF STREAMBANKBASEFLOW BURY INTOBANK 5'MINIMUM(TYP.)1% - 2% CROSS SLOPEEND STEP INVERTELEVATIONSCOURPOOLNOTES: 5' MINIMUMPLAN VIEWNOT TO SCALE1. LOGS SHOULD BE AT LEAST 12 INCHES IN DIAMETER, RELATIVELY STRAIGHT HARDWOODAND RECENTLY HARVESTED.2. LOGS >24 INCHES IN DIAMETER MAY BE USED ALONE WITHOUT AN ADDITIONAL LOG FILTERFABRIC SHOULD STILL BE USED TO SEAL AROUND LOG. LOGS SHOULD EXTEND INTO THEBANKS 5' ON EACH SIDE.3. SOIL SHALL BE WELL COMPACTED AROUND BURIED PORTION OF FOOTER LOGS WITHBUCKET OF TRACK HOE.4. INSTALL NON-WOVEN GEOTEXTILE FABRIC UNDERNEATH LOGS.5. UNDERCUT POOL BED ELEVATION 8 INCHES TO ALLOW FOR LAYER OF STONE. INSTALLSTONE BACKFILL OR SUITABLE ALLUVIUM ALONG SIDE SLOPES.6. INSTALL EROSION CONTROL MATTING ALONG COMPLETED BANKS SUCH THAT THE EROSIONCONTROL MATTING AT THE TOE OF THE BANK EXTENDS DOWN TO THE UNDERCUTELEVATION.7. INSTALL STONE BACKFILL OR SUITABLE SOIL MATERIAL ALONG SIDE SLOPES.8. FINAL CHANNEL BED SHAPE SHOULD BE ROUNDED, COMPACTED, AND CONCAVE, WITH THEELEVATION OF THE BED APPROXIMATELY 0.5 FT DEEPER IN THE CENTER THAN AT THEEDGES.9. AVERAGE POOL TO POOL SPACING SHALL BE SHOWN ON THE PROFILE OR SPECIFIED BYENGINEER BASED ON EXISTING CONDITIONS SUCH AS SLOPE AND SUITABLE FILL MATERIAL.RIFFLE STEP POOLS OR CASCADE POOLS MAY BE SUBSTITUTED IN AREAS WHERE EXISTINGSLOPES EXCEED 10% AS DETERMINED BY THE ENGINEER.10. INTERIOR LOGS SHOULD BE AT A SLIGHT ANGLE (~70 DEGREES) FROM THESTREAMBANK AND CROSS SLOPES SHOULD BE 1-2%.11. PLACE FOOTER LOGS FIRST AND THEN HEADER (TOP) LOG. SET HEADER LOGAT A MAXIMUM OF 3 INCHES ABOVE THE INVERT ELEVATION.12. AVERAGE STEP HEIGHTS/DROPS SHALL NOT EXCEED 0.5 UNLESS SHOWNOTHERWISE.13. CUT A NOTCH IN THE HEADER LOG APPROXIMATELY 30% OF THE CHANNELBOTTOM WIDTH AND EXTENDING DOWN TO THE INVERT ELEVATION. NOTCHSHALL BE USED TO CENTER FLOW AND NOT EXCEED 3 INCHES IN DEPTH.14. THE NUMBER OF STEPS MAY VARY BETWEEN BEGINNING AND ENDSTATIONING. SEE LONGITUDINAL PROFILE FOR STATION AND ELEVATION.15. USE GEOTEXTILE FABRIC FOR DRAINAGE TO SEAL GAPS BETWEEN LOGS.16. PLACE VEGETATION TRANSPLANTS FROM TOE OF STREAMBANK TO TOP OFSTREAMBANK.17. SEE TYPICAL SECTION FOR CHANNEL DIMENSIONS.PR O F ESSIONALSEAL36916ENGINEE R N O R THCAROLINACHRISTOPAT O M . ICHERSNO.REVISIONSDATEPROJECT NAMESHEET NUMBERDESIGNED BY :DRAWN BY :DATE :PROJECT NO. :FILENAME :DRAWING INFORMATIONSHEET NAMEHORIZ. SCALE :VERT. SCALE :PROJECT ENGINEERAENGINEERING SERVICES BYWLS ENGINEERING, PLLCFIRM LICENSE NO. P-1480BCDEFWATER & LAND SOLUTIONS7721 Six Fork Rd., Suite 130Raleigh, NC 27614(919)614-5111waterlandsolutions.comDRAFT MIT PLAN12-13-18SURRY COUNTY, NCDRAFT FINAL MIT PLAN5-8-19FINAL MIT PLAN7-26-19N O T F O R C O N S T R U C T I O N P R E L IM I N A R Y P L A N S77/26/19100026CAT/APLDETAILS04-07_HORNE_CREEK_DETAILS.DWGHORNE CREEKTRIBUTARIESMITIGATIONPROJECTCATN/AN/A 10+0011+0012+0013+0014+0015+0016+0017+00CECECECECECECECECECECECECECECE CE CE CECECECECECECECECECECECECE CE CE CE CECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECEXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX X X X X X XXXXXXXXXXXXX X X X XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX92093094095096097092093094095096097010+0011+0012+0013+0014+0015+0016+0017+0017+50PI STA=10+00.00 ELEV=955.90PI STA=10+07.00 ELEV=955.50PI STA=10+12.00 ELEV=953.50PI STA=10+19.00 ELEV=954.70PI STA=10+26.00 ELEV=952.70PI STA=10+32.00 ELEV=953.90PI STA=10+39.00 ELEV=951.90PI STA=10+46.00 ELEV=953.10PI STA=10+52.00 ELEV=951.10PI STA=10+58.00 ELEV=952.30PI STA=10+69.00 ELEV=951.70PI STA=10+71.00 ELEV=950.50PI STA=10+73.00 ELEV=951.70PI STA=10+91.00 ELEV=950.80PI STA=10+97.00 ELEV=949.60PI STA=11+03.00 ELEV=950.80PI STA=11+08.00 ELEV=948.80 PI STA=11+13.00 ELEV=950.00PI STA=11+19.00 ELEV=949.65PI STA=11+22.00 ELEV=948.45PI STA=11+27.00 ELEV=949.65PI STA=11+37.00 ELEV=949.15PI STA=11+40.00 ELEV=947.95PI STA=11+42.00 ELEV=949.15PI STA=11+52.00 ELEV=948.65PI STA=11+56.00 ELEV=947.45PI STA=11+62.00 ELEV=948.65PI STA=11+67.00 ELEV=946.85 PI STA=11+73.00 ELEV=948.05PI STA=11+78.00 ELEV=946.25PI STA=11+81.00 ELEV=947.45PI STA=11+93.00 ELEV=946.85PI STA=12+00.00 ELEV=945.65PI STA=12+06.00 ELEV=946.85PI STA=12+12.00 ELEV=945.05PI STA=12+19.00 ELEV=946.25PI STA=12+30.00 ELEV=944.45PI STA=12+42.00 ELEV=945.65 PI STA=12+54.00 ELEV=944.95 PI STA=12+60.00 ELEV=943.75 PI STA=12+66.00 ELEV=944.95 PI STA=12+76.00 ELEV=944.45 PI STA=12+80.00 ELEV=943.25 PI STA=12+84.00 ELEV=944.45 PI STA=12+91.00 ELEV=942.65 PI STA=12+94.00 ELEV=943.85 PI STA=13+02.00 ELEV=942.05 PI STA=13+06.00 ELEV=943.25 PI STA=13+17.00 ELEV=942.65 PI STA=13+19.00 ELEV=941.45 PI STA=13+22.00 ELEV=942.65 PI STA=13+37.00 ELEV=941.85 PI STA=13+40.00 ELEV=940.65 PI STA=13+43.00 ELEV=941.85 PI STA=13+56.00 ELEV=941.15 PI STA=13+61.00 ELEV=939.95 PI STA=13+69.00 ELEV=941.15 PI STA=13+72.00 ELEV=939.35 PI STA=13+78.00 ELEV=940.55 PI STA=13+84.00 ELEV=938.75 PI STA=13+86.00 ELEV=939.95 PI STA=13+96.00 ELEV=939.45 PI STA=13+99.00 ELEV=938.25 PI STA=14+02.00 ELEV=939.45 PI STA=14+13.00 ELEV=938.85 PI STA=14+19.00 ELEV=937.65 PI STA=14+26.00 ELEV=938.85 PI STA=14+36.00 ELEV=938.35 PI STA=14+44.00 ELEV=937.15 PI STA=14+54.00 ELEV=938.35 PI STA=14+60.00 ELEV=936.65 PI STA=14+65.00 ELEV=937.85 PI STA=14+74.00 ELEV=936.15 PI STA=14+82.00 ELEV=937.35 PI STA=14+93.00 ELEV=936.93 PI STA=15+03.00 ELEV=935.73 PI STA=15+12.00 ELEV=936.93 PI STA=15+16.00 ELEV=935.13 PI STA=15+22.00 ELEV=936.33 PI STA=15+27.00 ELEV=934.53 PI STA=15+32.00 ELEV=935.73 PI STA=15+42.00 ELEV=935.33 PI STA=15+50.00 ELEV=934.13 PI STA=15+60.00 ELEV=935.33 PI STA=15+69.00 ELEV=934.98 PI STA=15+75.00 ELEV=933.78 PI STA=15+82.00 ELEV=934.98 PI STA=15+97.00 ELEV=934.41 PI STA=16+04.00 ELEV=933.21 PI STA=16+11.00 ELEV=934.41 PI STA=16+15.00 ELEV=932.91 PI STA=16+21.00 ELEV=934.11 PI STA=16+30.00 ELEV=933.71 PI STA=16+50.00 ELEV=932.81 PI STA=16+54.00 ELEV=931.61 PI STA=16+56.00 ELEV=932.81 PI STA=16+65.00 ELEV=931.11 PI STA=16+72.00 ELEV=932.31 PI STA=16+77.00 ELEV=930.51 PI STA=16+83.00 ELEV=931.71 PI STA=16+97.00 ELEV=930.91 PI STA=17+09.00 ELEV=929.71 PI STA=17+18.00 ELEV=930.91 PI STA=17+31.00 ELEV=930.24 PI STA=17+35.00 ELEV=929.04 PI STA=17+40.00 ELEV=930.24 PI STA=17+47.00 ELEV=928.44 -5.71%-5.45%-5.00%-5.83%-5.00%-5.00%-5.00%-5.83%-5.00%-5.33%-5.38%-5.00%-5.45%-3.82%-4.00%-3.89%-3.80%-4.44%-4.50%-5.71%-5.15%-5.45%-5.45%FLOWBOULDER STEP POOL(TYP.)LOG WEIR (TYP.)BEGIN CONSTRUCTION R1STATION 10+00EXISTING FENCE TO REMAINEXISTING GROUNDDESIGN BANKFULLDESIGN THALWEGINSTALL WATER QUALITY TREATMENTFEATURE WITH OUTLET CHANNEL (SEETYPICAL SECTION AND DETAIL)EXISTING RIP RAP TOREMAINPR O F ESSIONALSEAL36916ENGINEE R N O R THCAROLINACHRISTOPAT O M . ICHERSNO.REVISIONSDATEPROJECT NAMESHEET NUMBERDESIGNED BY :DRAWN BY :DATE :PROJECT NO. :FILENAME :DRAWING INFORMATIONSHEET NAMEHORIZ. SCALE :VERT. SCALE :PROJECT ENGINEERAENGINEERING SERVICES BYWLS ENGINEERING, PLLCFIRM LICENSE NO. P-1480BCD1" = 60'EFWATER & LAND SOLUTIONS7721 Six Fork Rd., Suite 130Raleigh, NC 27614(919)614-5111waterlandsolutions.comDRAFT MIT PLAN12-13-18SURRY COUNTY, NC1" = 12'DRAFT FINAL MIT PLAN5-8-19FINAL MIT PLAN7-26-19N O T F O R C O N S T R U C T I O N P R E L IM I N A R Y P L A N SCONSTRUCTEDSTONE RIFFLE (TYP.)CONSTRUCTEDLOG RIFFLE (TYP.)REMOVE EXISTING 24" CULVERTINSTALL PROPOSED 48" HDPEINV IN = 935.52'INV OUT = 934.62'N/FBROWN FARMS OF SURRYCOUNTY, LLC.DB 900 PG 448PN 5952-00-56-7091FLOW87/26/19100026CAT/APLPLAN ANDPROFILE08-15_HORNE CREEK_PP_SHEETS.DWGHORNE CREEKTRIBUTARIESMITIGATIONPROJECTCAT301503060GRAPHIC SCALEMAT C H L I N E - S E E S H E E T 9REMOVE EXISTING 24"CULVERTINSTALL PROPOSED 48" CMPINV IN = 935.52'INV OUT = 934.62'KIGER RD. (SR-2071)30' R.O.W.INSTALL RIP RAP LINEDPLUNGE POOL TO ATTENUATECONCENTRATED FLOW ANDREDUCE EROSION. 17+0018+0019+0020+0021+0022+0023+0023+58CECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECE CE CE CECECECECECECECEXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX X X X X X XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX90091092093094095090091092093094095017+5018+0019+0020+0021+0022+0023+0024+00PI STA=17+51.00 ELEV=929.64PI STA=17+64.00 ELEV=928.94PI STA=17+69.00 ELEV=927.14PI STA=17+73.00 ELEV=928.34PI STA=17+82.00 ELEV=927.84PI STA=17+85.00 ELEV=926.64PI STA=17+88.00 ELEV=927.84PI STA=17+98.00 ELEV=927.39PI STA=18+01.00 ELEV=926.19PI STA=18+04.00 ELEV=927.39PI STA=18+14.00 ELEV=926.94PI STA=18+17.00 ELEV=925.74PI STA=18+21.00 ELEV=926.94PI STA=18+30.00 ELEV=926.56PI STA=18+33.00 ELEV=925.36PI STA=18+36.00 ELEV=926.56PI STA=18+47.00 ELEV=925.96PI STA=18+57.00 ELEV=924.46PI STA=18+66.00 ELEV=925.66PI STA=18+71.00 ELEV=924.16PI STA=18+79.00 ELEV=925.36PI STA=18+87.00 ELEV=923.56PI STA=18+96.00 ELEV=924.76PI STA=19+07.00 ELEV=924.16PI STA=19+16.00 ELEV=922.96PI STA=19+24.00 ELEV=924.16PI STA=19+30.00 ELEV=922.36PI STA=19+34.00 ELEV=923.56PI STA=19+45.00 ELEV=921.76 PI STA=19+57.00 ELEV=922.96 PI STA=19+67.00 ELEV=922.41 PI STA=19+75.00 ELEV=920.51 PI STA=19+84.00 ELEV=921.71 PI STA=19+92.00 ELEV=919.91 PI STA=19+98.00 ELEV=921.11 PI STA=20+05.00 ELEV=919.31 PI STA=20+12.00 ELEV=920.51 PI STA=20+26.00 ELEV=919.81 PI STA=20+33.00 ELEV=918.61 PI STA=20+40.00 ELEV=919.81 PI STA=20+52.00 ELEV=919.21 PI STA=20+64.00 ELEV=917.71 PI STA=20+76.00 ELEV=918.91 PI STA=20+88.00 ELEV=918.31 PI STA=20+98.00 ELEV=916.51 PI STA=21+07.00 ELEV=917.71 PI STA=21+16.00 ELEV=915.91 PI STA=21+25.00 ELEV=917.11 PI STA=21+31.00 ELEV=915.31 PI STA=21+37.00 ELEV=916.51 PI STA=21+45.00 ELEV=914.71 PI STA=21+53.00 ELEV=915.91 PI STA=21+65.00 ELEV=915.31 PI STA=21+70.00 ELEV=913.51 PI STA=21+75.00 ELEV=914.71 PI STA=21+88.00 ELEV=914.11 PI STA=21+96.00 ELEV=912.91 PI STA=22+05.00 ELEV=914.11 PI STA=22+12.00 ELEV=912.31 PI STA=22+23.00 ELEV=913.51 PI STA=22+28.00 ELEV=912.01 PI STA=22+33.00 ELEV=913.21 PI STA=22+51.00 ELEV=912.41 PI STA=22+56.00 ELEV=910.91 PI STA=22+61.00 ELEV=912.11 PI STA=22+71.00 ELEV=911.61 PI STA=22+77.00 ELEV=910.11 PI STA=22+82.00 ELEV=911.31 PI STA=22+97.00 ELEV=910.61 PI STA=23+01.00 ELEV=909.41 PI STA=23+06.00 ELEV=910.61 PI STA=23+16.00 ELEV=908.61 PI STA=23+20.00 ELEV=910.21 PI STA=23+27.00 ELEV=909.81 PI STA=23+39.00 ELEV=908.11 PI STA=23+45.00 ELEV=909.31 PI STA=23+58.00 ELEV=908.71 -5.38%-5.56%-4.50%-4.50%-4.22%-5.45%-5.45%-5.50%-5.00%-5.00%-5.00%-5.00%-4.62%-4.44%-5.00%-4.67%-5.71%-4.62%MATCHLINE - SEE SHEET 8CONSTRUCTEDSTONE RIFFLE (TYP.)CHANNEL BLOCK (TYP.)BOULDER STEP POOL (TYP.)EXISTING GROUNDDESIGN BANKFULLDESIGN THALWEGN/FBROWN FARMS OF SURRYCOUNTY, LLC.DB 900 PG 448PN 5952-00-56-7091FLOWCHANNEL FILL (TYP.)GEOLIFT W/ TOEWOOD (TYP.)PR O F ESSIONALSEAL36916ENGINEE R N O R THCAROLINACHRISTOPAT O M . ICHERSNO.REVISIONSDATEPROJECT NAMESHEET NUMBERDESIGNED BY :DRAWN BY :DATE :PROJECT NO. :FILENAME :DRAWING INFORMATIONSHEET NAMEHORIZ. SCALE :VERT. SCALE :PROJECT ENGINEERAENGINEERING SERVICES BYWLS ENGINEERING, PLLCFIRM LICENSE NO. P-1480BCD1" = 60'EFWATER & LAND SOLUTIONS7721 Six Fork Rd., Suite 130Raleigh, NC 27614(919)614-5111waterlandsolutions.comDRAFT MIT PLAN12-13-18SURRY COUNTY, NC1" = 12'DRAFT FINAL MIT PLAN5-8-19FINAL MIT PLAN7-26-19N O T F O R C O N S T R U C T I O N P R E L IM I N A R Y P L A N SLOG WEIR (TYP.)CONSTRUCTEDLOG RIFFLE (TYP.)BOULDER STEP-POOL (TYP.)END CONSTRUCTION R1STATION 23+58FLOWKIGER RD. (SR-2071)30' R.O.W.95/8/19100026CAT/APLPLAN ANDPROFILE08-15_HORNE CREEK_PP_SHEETS.DWGHORNE CREEKTRIBUTARIESMITIGATIONPROJECTCAT301503060GRAPHIC SCALEINSTALL RIP RAP LINEDPLUNGE POOL TO ATTENUATECONCENTRATED FLOW ANDREDUCE EROSION. 9+5510+0011+0012+0013+001 4+0 0 15+ 0 0 16+0017 + 0 0 18+0010+0011+ 0 0 1 2 + 0 0 12 + 5 7 XXXXXXXXXC E C E C E C E CECECECECECECECECECECEXXXXXXXXXCECECECECECECECECECECECECECECECE CE CE CE CECECECECECECECECECECECECECECECECECECECECECECECECECECECECECEXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX96097098099010001010960970980990100010109+4510+0011+0012+0013+0014+0015+0016+0017+00PI STA=9+49.56 ELEV=1000.20PI STA=9+66.22 ELEV=995.50PI STA=9+66.22 ELEV=995.50PI STA=10+04.58 ELEV=995.50PI STA=10+04.58 ELEV=995.50PI STA=10+09.35 ELEV=997.00PI STA=10+09.35 ELEV=997.00PI STA=10+17.00 ELEV=996.00PI STA=10+17.00 ELEV=996.00PI STA=10+32.00 ELEV=995.20PI STA=10+32.00 ELEV=995.20PI STA=10+39.00 ELEV=993.55PI STA=10+46.00 ELEV=994.55PI STA=10+56.00 ELEV=994.05PI STA=10+63.00 ELEV=992.40PI STA=10+70.00 ELEV=993.40PI STA=10+70.00 ELEV=993.40PI STA=10+83.00 ELEV=992.70PI STA=10+93.00 ELEV=991.20PI STA=11+01.00 ELEV=992.20PI STA=11+09.00 ELEV=990.70PI STA=11+14.00 ELEV=991.70PI STA=11+23.00 ELEV=990.20PI STA=11+30.00 ELEV=991.20PI STA=11+40.00 ELEV=990.70PI STA=11+45.00 ELEV=989.20PI STA=11+50.00 ELEV=990.20PI STA=11+56.00 ELEV=988.70PI STA=11+60.00 ELEV=989.70PI STA=11+76.00 ELEV=988.90PI STA=11+85.00 ELEV=987.40PI STA=11+94.00 ELEV=988.40 PI STA=11+98.00 ELEV=986.90 PI STA=12+02.00 ELEV=987.90 PI STA=12+14.00 ELEV=987.10 PI STA=12+18.00 ELEV=985.60 PI STA=12+24.00 ELEV=986.60 PI STA=12+38.00 ELEV=985.90 PI STA=12+42.00 ELEV=984.50 PI STA=12+47.00 ELEV=985.50 PI STA=12+53.00 ELEV=985.20 PI STA=12+59.00 ELEV=983.80 PI STA=12+68.00 ELEV=984.80 PI STA=12+76.00 ELEV=984.40 PI STA=12+81.00 ELEV=982.90 PI STA=12+86.00 ELEV=983.90 PI STA=12+92.00 ELEV=982.50 PI STA=12+97.00 ELEV=983.50 PI STA=13+05.00 ELEV=983.08 PI STA=13+12.00 ELEV=980.88 PI STA=13+25.00 ELEV=982.58 PI STA=13+40.00 ELEV=981.98 PI STA=13+47.00 ELEV=979.78 PI STA=13+60.00 ELEV=981.48 PI STA=13+72.00 ELEV=980.88 PI STA=13+86.00 ELEV=978.88 PI STA=14+00.00 ELEV=980.58 PI STA=14+11.00 ELEV=980.18 PI STA=14+20.00 ELEV=978.18 PI STA=14+31.00 ELEV=979.88 PI STA=14+45.00 ELEV=977.78 PI STA=14+57.00 ELEV=979.48 PI STA=14+64.00 ELEV=979.23 PI STA=14+74.00 ELEV=977.03 PI STA=14+84.00 ELEV=978.73 PI STA=14+93.00 ELEV=978.28 PI STA=15+05.00 ELEV=976.08 PI STA=15+16.00 ELEV=977.78 PI STA=15+22.00 ELEV=975.58 PI STA=15+30.00 ELEV=977.28 PI STA=15+45.00 ELEV=976.78PI STA=15+45.00 ELEV=976.78 PI STA=15+57.00 ELEV=974.58 PI STA=15+69.00 ELEV=976.08 PI STA=15+86.23 ELEV=975.18 PI STA=16+06.00 ELEV=974.63PI STA=16+06.00 ELEV=974.63 PI STA=16+18.00 ELEV=972.38PI STA=16+18.00 ELEV=972.38 PI STA=16+24.00 ELEV=974.08 PI STA=16+44.00 ELEV=973.08 PI STA=16+52.00 ELEV=970.88 PI STA=16+60.00 ELEV=972.58 PI STA=16+70.00 ELEV=970.38 PI STA=16+75.00 ELEV=972.08 PI STA=16+83.00 ELEV=969.88 PI STA=16+90.00 ELEV=971.58 -5.38%-5.00%-5.00%-6.67%-5.00%-5.00%-5.00%-5.25%-4.00%-5.00%-3.64%-5.00%-5.00%-5.38%-5.00%-5.33%-13.07%-3.33%-5.22%-2.78%975980990100010+0011+0012+0012+57PI STA=10+51.67 ELEV=991.27 PI STA=10+59.34 ELEV=988.54PI STA=10+59.34 ELEV=988.54 PI STA=10+99.00 ELEV=988.54PI STA=10+99.00 ELEV=988.54 PI STA=11+04.39 ELEV=990.00 PI STA=11+11.92 ELEV=988.50 PI STA=11+15.92 ELEV=988.00PI STA=11+15.92 ELEV=988.00 PI STA=11+20.46 ELEV=986.50PI STA=11+20.46 ELEV=986.50 PI STA=11+59.38 ELEV=986.50 PI STA=11+64.26 ELEV=988.00 PI STA=11+80.00 ELEV=984.84PI STA=11+80.00 ELEV=984.84 PI STA=11+90.00 ELEV=984.04 PI STA=11+95.00 ELEV=982.64 PI STA=11+99.00 ELEV=983.54 PI STA=12+04.00 ELEV=982.14 PI STA=12+10.00 ELEV=983.04 PI STA=12+19.00 ELEV=982.34 PI STA=12+24.00 ELEV=981.34 PI STA=12+28.00 ELEV=982.24 PI STA=12+35.00 ELEV=981.74 PI STA=12+38.00 ELEV=980.54 PI STA=12+43.00 ELEV=981.44 PI STA=12+47.49 ELEV=980.88 CONSTRUCTEDSTONE RIFFLE (TYP.)BOULDER STEP-POOL (TYP.)BEGIN CONSTRUCTION R2STATION 9+49EXISTING GROUNDDESIGN BANKFULLDESIGN THALWEGMATCHLINE - SEE SHEET 11INSTALL WATER QUALITY TREATMENTFEATURE WITH OUTLET CHANNEL(SEE TYPICAL SECTION AND DETAIL)END CONSTRUCTION R2BEGIN CONSTRUCTION R4STATION 13+13 END CONSTRUCTION R3STATION 12+55FLOWREMOVE EXISTING RIP RAPAND CONCRETE BLOCKSTIE PROPOSED SLOPETO EXISTING GRADEINSTALL 4 TONS CLASSA RIP RAP FOR SLOPEPROTECTIONPR O F ESSIONALSEAL36916ENGINEE R N O R THCAROLINACHRISTOPAT O M . ICHERSNO.REVISIONSDATEPROJECT NAMESHEET NUMBERDESIGNED BY :DRAWN BY :DATE :PROJECT NO. :FILENAME :DRAWING INFORMATIONSHEET NAMEHORIZ. SCALE :VERT. SCALE :PROJECT ENGINEERAENGINEERING SERVICES BYWLS ENGINEERING, PLLCFIRM LICENSE NO. P-1480BCD1" = 60'EFWATER & LAND SOLUTIONS7721 Six Fork Rd., Suite 130Raleigh, NC 27614(919)614-5111waterlandsolutions.comDRAFT MIT PLAN12-13-18SURRY COUNTY, NC1" = 12'DRAFT FINAL MIT PLAN5-8-19FINAL MIT PLAN7-26-19N O T F O R C O N S T R U C T I O N P R E L IM I N A R Y P L A N SMATCHLINE - SEE SHEET 24CONSTRUCTEDLOG RIFFLE (TYP.)BOULDER STEP-POOL (TYP.)GRADE CONTROL LOGJ-HOOK VANE (TYP.)N/FWILLIAM F. FULP &WIFE DEBRA P. FULP DB 521 PG 1524PN 5952-00-77-4688N/FNELSON B. KIRBY, JR. & WIFE NANCY C. KIRBYDB 458 PGPN 2365952-00-77-8215FLOW107/26/19100026CAT/APLPLAN ANDPROFILE08-15_HORNE CREEK_PP_SHEETS.DWGHORNE CREEKTRIBUTARIESMITIGATIONPROJECTCAT301503060GRAPHIC SCALEBEGIN CONSTRUCTION R3STATION 10+51EXISTING GROUNDDESIGN BANKFULLDESIGN THALWEGREACH R3 PROFILEREACH R2/R4 PROFILELOG WEIR (TYP.)STONE AND LOGSTEP POOL (TYP.)REMOVE AND RESET SWING SETPER DIRECTION OF ENGINEERINSTALL 20 LF - 48" CMPINV IN = 975.18'INV OUT = 974.63'INSTALL 20 LF - 48" HDPEINV IN = 975.18'INV OUT = 974.63'LOG VANE (TYP.)TOP ELEV.=980.40980.40 + WLBWLBWLB WLB WLB WLB WLB WLB WLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWL B WL B WL B WL B W L B WLBWLBWL B WLB WLB WLB WLBWLBWLBWLB17+0018+0019+0020+0021+0022+0023+0024+00 25+0026+0010+00 11+0012+0012+7011+0012+0012+32CECECECECECECECE CE CE CE C E CE CECECECECECECECECECECECECECEXXXXXXXXXXXX X X X X X XXXX X X XXXXXXXXXXXXXXXXXXXXXXXXXX XXXXXCECECECECECECECECECECEC E C E CECE CECECE CE CE CECECECECECECECECECECECECECECECECEXXXXXCECECEXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX94595096097098099094595096097098099017+0018+0019+0020+0021+0022+0023+0024+00PI STA=17+03.00 ELEV=970.88PI STA=17+17.00 ELEV=968.68PI STA=17+32.00 ELEV=970.38PI STA=17+47.00 ELEV=969.68PI STA=17+57.00 ELEV=967.73PI STA=17+67.00 ELEV=969.43PI STA=17+76.00 ELEV=967.43PI STA=17+90.00 ELEV=969.13PI STA=18+04.00 ELEV=968.53PI STA=18+10.00 ELEV=966.83PI STA=18+20.00 ELEV=968.53PI STA=18+25.00 ELEV=966.63PI STA=18+30.00 ELEV=968.33PI STA=18+40.00 ELEV=966.43PI STA=18+50.00 ELEV=968.13PI STA=18+60.00 ELEV=966.33PI STA=18+75.00 ELEV=968.03PI STA=18+90.00 ELEV=967.53PI STA=18+95.00 ELEV=965.83PI STA=19+00.00 ELEV=967.53PI STA=19+11.00 ELEV=965.53 PI STA=19+23.00 ELEV=967.23 PI STA=19+33.00 ELEV=966.91 PI STA=19+40.00 ELEV=964.71 PI STA=19+45.00 ELEV=966.41 PI STA=19+57.00 ELEV=965.86 PI STA=19+72.00 ELEV=963.66 PI STA=19+88.00 ELEV=965.36 PI STA=19+94.00 ELEV=963.16 PI STA=20+01.00 ELEV=964.86 PI STA=20+08.00 ELEV=962.86 PI STA=20+15.00 ELEV=964.56 PI STA=20+36.00 ELEV=962.36 PI STA=20+58.00 ELEV=964.06 PI STA=20+68.00 ELEV=963.56PI STA=20+70.00 ELEV=961.36 PI STA=20+75.00 ELEV=963.06 PI STA=20+85.00 ELEV=962.56 PI STA=21+04.00 ELEV=960.36 PI STA=21+18.00 ELEV=962.06 PI STA=21+46.00 ELEV=960.86 PI STA=21+49.00 ELEV=958.66 PI STA=21+57.00 ELEV=960.36 PI STA=21+67.00 ELEV=959.86 PI STA=21+73.00 ELEV=957.66 PI STA=21+80.00 ELEV=959.36 PI STA=21+93.00 ELEV=957.16 PI STA=22+10.31 ELEV=958.86 PI STA=22+30.31 ELEV=957.66PI STA=22+30.31 ELEV=957.66 PI STA=22+45.00 ELEV=955.86 PI STA=22+53.00 ELEV=957.56 PI STA=22+78.00 ELEV=956.56PI STA=22+78.00 ELEV=956.56 PI STA=22+90.00 ELEV=954.66 PI STA=23+06.00 ELEV=956.36 PI STA=23+16.00 ELEV=954.46 PI STA=23+22.00 ELEV=956.16 PI STA=23+36.00 ELEV=955.66 PI STA=23+47.00 ELEV=953.86 PI STA=23+59.00 ELEV=955.56 PI STA=23+82.00 ELEV=954.56PI STA=23+82.00 ELEV=954.56 PI STA=23+92.00 ELEV=952.86 PI STA=24+00.00 ELEV=954.56 -4.67%-4.29%-3.33%-3.20%-4.58%-5.00%-5.00%-4.29%-5.00%-3.57%-4.00%-4.35%-6.00%CONSTRUCTED LOG RIFFLE(TYP.)GRADE CONTROL LOGJ-HOOK VANE (TYP.)STONE AND LOGSTEP POOL (TYP.)GEOLIFT W/TOE WOOD (TYP.)CHANNEL BLOCK (TYP.)EXISTING GROUNDDESIGN BANKFULLDESIGN THALWEGMATCHLINE - SEE SHEET 10 N/FWILLIAM F. FULP &WIFE DEBRA P. FULP DB 521 PG 1524PN 5952-00-77-4688N/FMARY ELLEN BROWN SMITHPORTION OF DB 370 PG 890PN 5952-00-77-2795FLOWCHANNEL FILL (TYP.)PR O F ESSIONALSEAL36916ENGINEE R N O R THCAROLINACHRISTOPAT O M . ICHERSNO.REVISIONSDATEPROJECT NAMESHEET NUMBERDESIGNED BY :DRAWN BY :DATE :PROJECT NO. :FILENAME :DRAWING INFORMATIONSHEET NAMEHORIZ. SCALE :VERT. SCALE :PROJECT ENGINEERAENGINEERING SERVICES BYWLS ENGINEERING, PLLCFIRM LICENSE NO. P-1480BCD1" = 60'EFWATER & LAND SOLUTIONS7721 Six Fork Rd., Suite 130Raleigh, NC 27614(919)614-5111waterlandsolutions.comDRAFT MIT PLAN12-13-18SURRY COUNTY, NC1" = 12'DRAFT FINAL MIT PLAN5-8-19FINAL MIT PLAN7-26-19N O T F O R C O N S T R U C T I O N P R E L IM I N A R Y P L A N S117/26/19100026CAT/APLPLAN ANDPROFILE08-15_HORNE CREEK_PP_SHEETS.DWGHORNE CREEKTRIBUTARIESMITIGATIONPROJECTCAT301503060GRAPHIC SCALEMATCHLINE - SEE SHEET 12 END CONSTRUCTION R4ASTATION 12+55BEGIN CONSTRUCTION R4BSTATION 10+72END CONSTRUCTION R4BEGIN CONSTRUCTION R5STATION 25+19END CONSTRUCTION R4BSTATION 12+24DO NOT DISTURBEXISTING WETLANDSOUTSIDE OF CHANNELCONSTRUCTION (TYP.)BEGIN CONSTRUCTION R4ASTATION 10+98VERNAL POOL (TYP.)ROOT WAD (TYP.)LOG VANE (TYP.)N/FMARY E. SMITHDB 527 PG 589,AND DB 528 PG 491PN 5952-00-76-5174N/FBROWN FARMS OF SURRYCOUNTY, LLC.DB 900 PG 448PN 5952-00-56-7091CONSTRUCTEDSTONE RIFFLE (TYP.)INSTALL 20 LF - 48" CMPINV IN = 958.86'INV OUT = 957.66'INSTALL 20 LF - 48" HDPEINV IN = 958.86'INV OUT = 957.66'TOP ELEV.=964.30+ 964.30 WLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLB23+0024+0025+0026+0027+0028+0029+0030+0031+0011+0012+0012+7010+0011+0012+0012+32CECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECEXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX X X X XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXCECECECECECECECEXXXXXXXXXXXXXXXXXCE XXX93094095096097093094095096097024+0025+0026+0027+0028+0029+0030+0031+0031+50PI STA=24+00.00 ELEV=954.56PI STA=24+07.00 ELEV=954.31PI STA=24+14.00 ELEV=952.11PI STA=24+19.00 ELEV=953.81PI STA=24+25.00 ELEV=953.51PI STA=24+40.00 ELEV=951.81PI STA=24+55.00 ELEV=953.51PI STA=24+80.00 ELEV=952.41PI STA=24+90.00 ELEV=950.71PI STA=25+00.00 ELEV=952.41PI STA=25+19.00 ELEV=951.61PI STA=25+35.00 ELEV=949.41PI STA=25+51.00 ELEV=951.41PI STA=25+78.00 ELEV=950.51PI STA=25+91.00 ELEV=948.21PI STA=26+04.00 ELEV=950.21PI STA=26+12.00 ELEV=949.96PI STA=26+20.00 ELEV=947.46PI STA=26+28.00 ELEV=949.46PI STA=26+38.00 ELEV=949.06 PI STA=26+50.00 ELEV=946.56 PI STA=26+63.00 ELEV=948.56 PI STA=26+93.00 ELEV=947.56 PI STA=27+09.00 ELEV=945.06 PI STA=27+25.00 ELEV=947.06 PI STA=27+57.00 ELEV=946.06 PI STA=27+71.00 ELEV=943.76 PI STA=27+84.00 ELEV=945.76 PI STA=27+89.00 ELEV=943.26 PI STA=27+95.00 ELEV=945.26 PI STA=28+02.00 ELEV=942.76 PI STA=28+09.00 ELEV=944.76 PI STA=28+25.00 ELEV=942.51 PI STA=28+41.00 ELEV=944.51 PI STA=28+47.00 ELEV=944.31 PI STA=28+53.00 ELEV=942.31 PI STA=28+59.00 ELEV=944.31 PI STA=28+64.00 ELEV=944.12 PI STA=28+80.00 ELEV=942.12 PI STA=28+95.00 ELEV=944.12 PI STA=29+20.00 ELEV=943.12 PI STA=29+36.00 ELEV=940.82 PI STA=29+52.00 ELEV=942.82 PI STA=29+78.00 ELEV=942.03 PI STA=29+91.00 ELEV=940.03 PI STA=30+05.00 ELEV=942.03 PI STA=30+32.00 ELEV=941.03 PI STA=30+48.00 ELEV=939.03 PI STA=30+66.75 ELEV=941.03 PI STA=30+86.75 ELEV=940.13 PI STA=31+07.00 ELEV=938.13 PI STA=31+22.00 ELEV=940.13 PI STA=31+48.00 ELEV=939.18 -3.57%-5.00%-4.40%-4.21%-3.33%-3.12%-4.00%-3.33%-3.12%-3.33%-3.80%-4.00%-3.04%-3.70%-4.50%-3.65%94095096097094095096097011+5012+0012+70PI STA=11+54.67 ELEV=954.83PI STA=11+59.69 ELEV=954.20PI STA=11+64.62 ELEV=954.73PI STA=11+76.42 ELEV=954.47PI STA=11+81.58 ELEV=953.91PI STA=11+86.48 ELEV=954.41PI STA=11+91.54 ELEV=953.86PI STA=11+96.47 ELEV=954.36PI STA=12+01.49 ELEV=953.79PI STA=12+06.42 ELEV=954.33PI STA=12+18.39 ELEV=954.07PI STA=12+23.39 ELEV=953.54PI STA=12+28.32 ELEV=954.04PI STA=12+33.34 ELEV=953.48PI STA=12+38.27 ELEV=954.02PI STA=12+47.95 ELEV=953.82PI STA=12+52.98 ELEV=953.29PI STA=12+57.91 ELEV=953.82PI STA=12+69.70 ELEV=953.51-2.21%-2.15%-2.03%-2.67%94095096097094095096097011+0012+0012+32PI STA=11+04.13 ELEV=953.84PI STA=11+10.65 ELEV=953.13PI STA=11+16.25 ELEV=953.60PI STA=11+27.78 ELEV=953.31PI STA=11+32.80 ELEV=952.77PI STA=11+37.13 ELEV=953.24PI STA=11+42.15 ELEV=952.61PI STA=11+46.49 ELEV=953.08PI STA=11+53.39 ELEV=952.88PI STA=11+58.41 ELEV=952.33PI STA=11+62.74 ELEV=952.80PI STA=11+69.64 ELEV=952.60PI STA=11+74.66 ELEV=952.05PI STA=11+79.00 ELEV=952.52PI STA=11+86.56 ELEV=952.33PI STA=11+91.58 ELEV=951.76PI STA=11+95.92 ELEV=952.23 PI STA=12+00.94 ELEV=951.60 PI STA=12+05.27 ELEV=952.07 PI STA=12+10.29 ELEV=951.44 PI STA=12+14.63 ELEV=951.90 PI STA=12+31.68 ELEV=951.61-2.56%-2.84%-2.84%-2.49%-1.73%MATCHLINE - SEE SHEET 11GRADE CONTROL LOGJ-HOOK VANE (TYP.)CHANNEL BLOCK (TYP.)ROOTWADS (TYP.)END CONSTRUCTION R4ASTATION 12+55BEGIN CONSTRUCTION R4BSTATION 10+72END CONSTRUCTION R4BEGIN CONSTRUCTION R5STATION 25+19END CONSTRUCTION R4BSTATION 12+24LOG WEIR (TYP.)CONSTRUCTEDLOG RIFFLE (TYP.)GEOLIFT W/TOE WOOD (TYP.)EXISTING GROUNDDESIGN BANKFULLDESIGN THALWEGREACH R4 PROFILEREACH R4A PROFILEREACH R4B PROFILEEXISTING GROUNDDESIGN BANKFULLDESIGN THALWEGEXISTING GROUNDDESIGN BANKFULLDESIGN THALWEGN/FMARY E. SMITHDB 527 PG 589,AND DB 528 PG 491PN 5952-00-76-5174N/FBROWN FARMS OF SURRYCOUNTY, LLC.DB 900 PG 448PN 5952-00-56-7091FLOWCONSTRUCTEDSTONE RIFFLE (TYP.)PR O F ESSIONALSEAL36916ENGINEE R N O R THCAROLINACHRISTOPAT O M . ICHERSNO.REVISIONSDATEPROJECT NAMESHEET NUMBERDESIGNED BY :DRAWN BY :DATE :PROJECT NO. :FILENAME :DRAWING INFORMATIONSHEET NAMEHORIZ. SCALE :VERT. SCALE :PROJECT ENGINEERAENGINEERING SERVICES BYWLS ENGINEERING, PLLCFIRM LICENSE NO. P-1480BCD1" = 60'EFWATER & LAND SOLUTIONS7721 Six Fork Rd., Suite 130Raleigh, NC 27614(919)614-5111waterlandsolutions.comDRAFT MIT PLAN12-13-18SURRY COUNTY, NC1" = 12'DRAFT FINAL MIT PLAN5-8-19FINAL MIT PLAN7-26-19N O T F O R C O N S T R U C T I O N P R E L IM I N A R Y P L A N S125/8/19100026CAT/APLPLAN ANDPROFILE08-15_HORNE CREEK_PP_SHEETS.DWGHORNE CREEKTRIBUTARIESMITIGATIONPROJECTCAT301503060GRAPHIC SCALEMATC H L I N E - S E E S H E E T 1 3BEGIN CONSTRUCTION R4ASTATION 10+98VERNAL POOL (TYP.)STONE AND LOGSTEP POOL (TYP.)CHANNEL FILL (TYP.)INSTALL 20 LF - 60" CMPINV IN = 941.03'INV OUT = 940.13'INSTALL 20 LF - 60" HDPEINV IN = 941.03'INV OUT = 940.13'LOG VANE (TYP.)DO NOT DISTURBEXISTING WETLANDSOUTSIDE OF CHANNELCONSTRUCTION (TYP.)TOP ELEV.=947.50+ 947.50 30+0031+0032+0033+0034+0035+0036+0037+0038+00CECECECECECECECECECECECECEXXXXXXXXXXXXXXXXXXXXXXXXCECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECEXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX92093094095096092093094095096031+0032+0033+0034+0035+0036+0037+00PI STA=31+07.00 ELEV=938.13PI STA=31+22.00 ELEV=940.13PI STA=31+48.00 ELEV=939.18PI STA=31+64.00 ELEV=936.88PI STA=31+80.00 ELEV=938.88PI STA=31+85.00 ELEV=938.68PI STA=31+90.00 ELEV=936.18PI STA=31+95.00 ELEV=938.18PI STA=32+04.00 ELEV=937.88PI STA=32+22.00 ELEV=935.38PI STA=32+40.00 ELEV=937.38PI STA=32+64.00 ELEV=936.43PI STA=32+80.00 ELEV=933.93 PI STA=32+98.00 ELEV=935.93 PI STA=33+02.00 ELEV=933.43 PI STA=33+10.00 ELEV=935.43 PI STA=33+17.00 ELEV=932.93 PI STA=33+20.00 ELEV=934.93 PI STA=33+38.00 ELEV=932.43 PI STA=33+57.00 ELEV=934.43 PI STA=33+88.00 ELEV=933.43 PI STA=33+99.00 ELEV=931.23 PI STA=34+10.00 ELEV=933.23 PI STA=34+36.00 ELEV=932.38 PI STA=34+45.00 ELEV=930.18 PI STA=34+53.00 ELEV=932.18 PI STA=34+75.00 ELEV=931.49 PI STA=34+92.00 ELEV=929.49 PI STA=35+06.00 ELEV=931.49 PI STA=35+31.00 ELEV=930.69 PI STA=35+45.00 ELEV=928.29 PI STA=35+59.17 ELEV=930.29 PI STA=35+89.00 ELEV=929.39 PI STA=35+98.00 ELEV=927.39 PI STA=36+08.00 ELEV=929.39 PI STA=36+30.00 ELEV=928.54 PI STA=36+41.00 ELEV=926.34 PI STA=36+52.00 ELEV=928.34 PI STA=36+72.00 ELEV=927.72 PI STA=36+90.00 ELEV=925.22 -3.65%-4.00%-3.33%-3.96%-3.23%-3.27%-3.14%-3.20%-3.02%-3.86%-3.10%MATCHLINE - SEE SHEET 12CONSTRUCTEDSTONE RIFFLE (TYP.)GRADE CONTROL LOGJ-HOOK VANE (TYP.)LOG WEIR (TYP.)STONE AND LOGSTEP POOL (TYP.)CONSTRUCTEDLOG RIFFLE (TYP.)ROOTWADS (TYP.)CHANNEL BLOCK (TYP.)GEOLIFT W/TOE WOOD (TYP.)EXISTING GROUNDDESIGN BANKFULLDESIGN THALWEGN/FMARY E. SMITHDB 527 PG 589,AND DB 528 PG 491PN 5952-00-76-5174N/FBROWN FARMS OF SURRYCOUNTY, LLC.DB 900 PG 448PN 5952-00-56-7091FLOWCHANNEL FILL (TYP.)VERNAL POOL (TYP.)PR O F ESSIONALSEAL36916ENGINEE R N O R THCAROLINACHRISTOPAT O M . ICHERSNO.REVISIONSDATEPROJECT NAMESHEET NUMBERDESIGNED BY :DRAWN BY :DATE :PROJECT NO. :FILENAME :DRAWING INFORMATIONSHEET NAMEHORIZ. SCALE :VERT. SCALE :PROJECT ENGINEERAENGINEERING SERVICES BYWLS ENGINEERING, PLLCFIRM LICENSE NO. P-1480BCD1" = 60'EFWATER & LAND SOLUTIONS7721 Six Fork Rd., Suite 130Raleigh, NC 27614(919)614-5111waterlandsolutions.comDRAFT MIT PLAN12-13-18SURRY COUNTY, NC1" = 12'DRAFT FINAL MIT PLAN5-8-19FINAL MIT PLAN7-26-19N O T F O R C O N S T R U C T I O N P R E L IM I N A R Y P L A N S137/26/19100026CAT/APLPLAN ANDPROFILE08-15_HORNE CREEK_PP_SHEETS.DWGHORNE CREEKTRIBUTARIESMITIGATIONPROJECTCAT301503060GRAPHIC SCALEMATCHLINE - SEE SHEET 14LOG VANE (TYP.)INSTALL 20 LF - 60" CMPINV IN = 930.19'INV OUT = 929.39' 37+0038+0039+00 40 + 0 0 4 1 + 0 0 4 2 + 0 0 43+0044+0045+0046+00CECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECEXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX91092093094095091092093094095037+0038+0039+0040+0041+0042+0043+0044+00PI STA=37+08.00 ELEV=927.22PI STA=37+29.00 ELEV=926.42PI STA=37+45.00 ELEV=923.92PI STA=37+62.00 ELEV=925.92PI STA=37+69.00 ELEV=925.67PI STA=37+75.00 ELEV=923.17PI STA=37+80.00 ELEV=925.17PI STA=37+88.00 ELEV=924.92PI STA=38+05.00 ELEV=922.62PI STA=38+22.00 ELEV=924.62PI STA=38+27.00 ELEV=924.46PI STA=38+32.00 ELEV=921.96PI STA=38+37.00 ELEV=923.96PI STA=38+42.00 ELEV=923.79PI STA=38+62.00 ELEV=921.29PI STA=38+83.00 ELEV=923.29PI STA=39+05.00 ELEV=922.54PI STA=39+23.00 ELEV=920.54 PI STA=39+41.00 ELEV=922.54 PI STA=39+58.00 ELEV=921.89 PI STA=39+77.00 ELEV=919.89 PI STA=39+96.00 ELEV=921.89 PI STA=40+12.00 ELEV=921.29 PI STA=40+32.00 ELEV=919.29 PI STA=40+52.00 ELEV=921.29 PI STA=40+56.00 ELEV=918.79 PI STA=40+60.00 ELEV=920.79 PI STA=40+65.00 ELEV=920.59 PI STA=40+82.00 ELEV=918.09 PI STA=40+98.00 ELEV=920.09 PI STA=41+03.00 ELEV=919.89 PI STA=41+08.00 ELEV=917.49 PI STA=41+13.00 ELEV=919.49 PI STA=41+18.00 ELEV=919.29 PI STA=41+34.00 ELEV=917.29 PI STA=41+50.00 ELEV=919.29 PI STA=41+67.00 ELEV=918.64 PI STA=41+86.00 ELEV=916.64 PI STA=42+05.00 ELEV=918.64 PI STA=42+23.00 ELEV=918.04 PI STA=42+40.00 ELEV=915.54 PI STA=42+57.00 ELEV=917.54 PI STA=42+77.00 ELEV=916.89 PI STA=42+96.00 ELEV=914.39 PI STA=43+15.00 ELEV=916.39 PI STA=43+39.00 ELEV=915.59 PI STA=43+56.00 ELEV=913.09 PI STA=43+73.00 ELEV=915.09 PI STA=43+94.00 ELEV=914.39 -3.81%-3.57%-3.12%-3.20%-3.40%-3.41%-3.82%-3.75%-4.00%-4.00%-4.00%-3.82%-3.33%-3.25%-3.33%-3.33%MATCHLINE - SEE SHEET 13CONSTRUCTEDLOG RIFFLE (TYP.)CHANNEL BLOCK (TYP.)ROOTWADS (TYP.)LOG VANE (TYP.)LOG WEIR (TYP.)GEOLIFT W/TOE WOOD (TYP.)CONSTRUCTEDSTONE RIFFLE (TYP.)EXISTING GROUNDDESIGN BANKFULLDESIGN THALWEGN/FMARY E. SMITHDB 527 PG 589,AND DB 528 PG 491PN 5952-00-76-5174N/FBROWN FARMS OF SURRYCOUNTY, LLC.DB 900 PG 448PN 5952-00-56-7091FLOWCHANNEL FILL(TYP.)PR O F ESSIONALSEAL36916ENGINEER N O R THCAROLINACHRISTOPAT O M . ICHERSNO.REVISIONSDATEPROJECT NAMESHEET NUMBERDESIGNED BY :DRAWN BY :DATE :PROJECT NO. :FILENAME :DRAWING INFORMATIONSHEET NAMEHORIZ. SCALE :VERT. SCALE :PROJECT ENGINEERAENGINEERING SERVICES BYWLS ENGINEERING, PLLCFIRM LICENSE NO. P-1480BCD1" = 60'EFWATER & LAND SOLUTIONS7721 Six Fork Rd., Suite 130Raleigh, NC 27614(919)614-5111waterlandsolutions.comDRAFT MIT PLAN12-13-18SURRY COUNTY, NC1" = 12'DRAFT FINAL MIT PLAN5-8-19FINAL MIT PLAN7-26-19N O T F O R C O N S T R U C T I O N P R E L I M I N A R Y P L A N S147/26/19100026CAT/APLPLAN ANDPROFILE08-15_HORNE CREEK_PP_SHEETS.DWGHORNE CREEKTRIBUTARIESMITIGATIONPROJECTCAT301503060GRAPHIC SCALEMATCHLINE - SEE SHEET 15VERNAL POOL(TYP.)OFFSITE CONCENTRATEDFLOW TO BE REDIRECTEDINTO VERNAL POOL FORATTENUATION. OHE OHE OHE OHE OHE OHE OHE OHE OHE OHE OHE OHE OHE OHE OHE OHE OHE OHE OHE OHE OHE OHE OHE OHE OHE OHE OHE 42+0043+0044+0045+0046+0047+0048+00CECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECEXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX89090091092093089090091092093044+0045+0046+0047+0048+0049+00PI STA=44+14.00 ELEV=911.89PI STA=44+35.00 ELEV=913.89PI STA=44+52.00 ELEV=913.34PI STA=44+77.00 ELEV=910.84PI STA=45+01.00 ELEV=912.84PI STA=45+18.00 ELEV=912.24PI STA=45+18.00 ELEV=912.24 PI STA=45+37.00 ELEV=909.84 PI STA=45+56.00 ELEV=911.84 PI STA=45+62.00 ELEV=911.64 PI STA=45+68.00 ELEV=909.14 PI STA=45+74.00 ELEV=911.14 PI STA=45+79.00 ELEV=910.97 PI STA=46+00.00 ELEV=908.67 PI STA=46+20.00 ELEV=910.67 PI STA=46+53.00 ELEV=909.67 PI STA=46+70.00 ELEV=907.67 PI STA=46+86.00 ELEV=909.67 PI STA=46+99.00 ELEV=909.25 PI STA=47+08.00 ELEV=906.75 PI STA=47+16.00 ELEV=908.75 PI STA=47+30.00 ELEV=908.32 PI STA=47+38.00 ELEV=905.82 PI STA=47+46.00 ELEV=907.82 PI STA=47+61.00 ELEV=907.35 PI STA=47+65.00 ELEV=904.85 PI STA=47+68.00 ELEV=906.85 PI STA=47+80.00 ELEV=906.47 PI STA=47+87.00 ELEV=903.97 PI STA=47+91.00 ELEV=905.97 PI STA=48+11.55 ELEV=905.30-3.24%-3.40%-3.03%-3.23%-3.07%-3.13%-3.17%-3.53%LOG WEIR (TYP.)CONSTRUCTEDSTONE RIFFLE (TYP.)LOG VANE (TYP.)GEOLIFT W/TOE WOOD (TYP.)CONSTRUCTEDLOG RIFFLE (TYP.)CHANNEL BLOCK (TYP.)EXISTING GROUNDDESIGN BANKFULLDESIGN THALWEGMATCHLINE - SEE SHEET 15N/FMARY E. SMITHDB 527 PG 589,AND DB 528 PG 491PN 5952-00-76-5174N/FBROWN FARMS OF SURRYCOUNTY, LLC.DB 900 PG 448PN 5952-00-56-7091FLOWCHANNEL FILL (TYP.)VERNAL POOL (TYP.)PR O F ESSIONALSEAL36916ENGINEE R N O R THCAROLINACHRISTOPAT O M . ICHERSNO.REVISIONSDATEPROJECT NAMESHEET NUMBERDESIGNED BY :DRAWN BY :DATE :PROJECT NO. :FILENAME :DRAWING INFORMATIONSHEET NAMEHORIZ. SCALE :VERT. SCALE :PROJECT ENGINEERAENGINEERING SERVICES BYWLS ENGINEERING, PLLCFIRM LICENSE NO. P-1480BCD1" = 60'EFWATER & LAND SOLUTIONS7721 Six Fork Rd., Suite 130Raleigh, NC 27614(919)614-5111waterlandsolutions.comDRAFT MIT PLAN12-13-18SURRY COUNTY, NC1" = 12'DRAFT FINAL MIT PLAN5-8-19FINAL MIT PLAN7-26-19N O T F O R C O N S T R U C T I O N P R E L IM I N A R Y P L A N S157/26/19100026CAT/APLPLAN ANDPROFILE08-15_HORNE CREEK_PP_SHEETS.DWGHORNE CREEKTRIBUTARIESMITIGATIONPROJECTCAT301503060GRAPHIC SCALEEND CONSTRUCTION R5STATION 48+12N/FTHERESA JAMES & MARTHAJAMESDB 488 PG 1305PN 5952-00-75-6182N/FJANE B.BOGERDB 945 PG 886PN 5952-00-73-3427N/FKEVIN E. BROWN & WIFEPATRICIA G. BROWNDB 802 PG 810PN 5952-00-63-4989KIGER RD. (SR-2071)30' R.O.W.30' DUKE ENERGY PROGRESSTRANSMISSION LINE EASEMENTD.B. 130 PG. 356 & D.B. 211 PG. 530DO NOT DISTURB EXISTINGPOWER POLE. NO WORK SHALLBE DONE WITHIN THE EXISTINGUTILITY EASEMENT BEYONDCHANNEL GRADING.EXISTING 60" CMPINV. IN=905.30INV. OUT=905.19 10+0011+0012+0013+0014+0015+0016+0017+0018+0019+0020+0021+0022+0023+0023+58CECECECECECECECECECECECE CE CE CECECECECECECECECECE CE CE CECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECE CE CECECECECECECERICKY D. BOWEN & WIFEVICKIE P. BOWENPIN: 5952-00-54-1367DB: 656 PG: 1086FOR BOUNDARY LINE AGREEMENTSEE DB: 386 PG: 342 & 345BROWN FARMS OF SURRY COUNTY, LLC.PIN: 5952-00-56-7091DB: 936 PG: 448, TRACT 7FOR PROPERTY DESCRIPTION SEE DB: 709 PG: 1094REFERENCE: DB: 203 PG: 448PORTION OF PB: 9 PG: 191, TRACT AFOR BOUNDARY LINE AGREEMENT SEE DB: 386 PG: 342KIGER ROAD (S.R. 2071)NO DEED FOUND FOR R/W TO N.C.D.O.T.PR O F ESSIONALSEAL36916ENGINEE R N O R THCAROLINACHRISTOPAT O M . ICHERSNO.REVISIONSDATEPROJECT NAMESHEET NUMBERDESIGNED BY :DRAWN BY :DATE :PROJECT NO. :FILENAME :DRAWING INFORMATIONSHEET NAMEHORIZ. SCALE :VERT. SCALE :PROJECT ENGINEERAENGINEERING SERVICES BYWLS ENGINEERING, PLLCFIRM LICENSE NO. P-1480BCDEFWATER & LAND SOLUTIONS7721 Six Fork Rd., Suite 130Raleigh, NC 27614(919)614-5111waterlandsolutions.comDRAFT MIT PLAN12-13-18SURRY COUNTY, NCDRAFT FINAL MIT PLAN5-8-19FINAL MIT PLAN7-26-19N O T F O R C O N S T R U C T I O N P R E L I M I N A R Y P L A N S PLANTING ZONESRIPARIAN BUFFER RESTORATIONPLANTING NOTESPLANTING SCHEDULEPERMANENT SEEDINGSCHEDULETEMPORARY SEEDINGSCHEDULE1.THE FOLLOWING TABLES LIST THE PROPOSEDVEGETATION SPECIES SELECTION FOR THE PROJECTREVEGETATION. THE TOTAL PLANTING AREA ISAPPROXIMATELY 10.2 ACRES AND WILL VARY BASED ONSITE CONDITIONS DURING CONSTRUCTION.2.FINAL VEGETATION SPECIES SELECTION MAY CHANGEDUE TO REFINEMENT OR SPECIES AVAILABILITY AT THETIME OF PLANTING. SPECIES SUBSTITUTIONS WILL BECOORDINATED BETWEEN ENGINEER AND PLANTINGCONTRACTOR PRIOR TO THE PROCUREMENT OFPLANT/SEED STOCK.3.IN GENERAL, WOODY SPECIES SHALL BE PLANTED AT ADENSITY OF 680 STEMS PER ACRE AND A MINIMUM OF30 FEET FROM THE TOP OF RESTORED STREAMBANKSTO THE REVEGETATION LIMITS. EXACT PLACEMENT OFTHE SPECIES WILL BE DETERMINED BY THECONTRACTOR’S VEGETATION SPECIALIST PRIOR TOSITE PLANTING AND BASED ON THE WETNESSCONDITIONS OF PLANTING LOCATIONS.4.SUPPLEMENTAL PLANTING ACTIVITIES SHALL BEPERFORMED WITHIN THE EXISTING BUFFER AREAUSING SPECIES DESCRIBED IN RIPARIAN BUFFERPLANT MIXTURE.5.ANY INVASIVE SPECIES VEGETATION, SUCH ASCHINESE PRIVET (LIGUSTRUM SINENSE) ANDMULTIFLORA ROSE (ROSA MULTIFLORA) WILL BEINITIALLY TREATED AS DESCRIBED IN THECONSTRUCTION SPECIFICATIONS PRIOR TO PLANTINGACTIVITIES TO ALLOW NATIVE PLANTS TO BECOMEESTABLISHED WITHIN THE CONSERVATION EASEMENT.6.LARGER NATIVE TREE SPECIES TO BE PRESERVEDWILL BE FLAGGED BY THE ENGINEER PRIOR TOCONSTRUCTION ACTIVITIES. ANY TREES HARVESTEDFOR WOODY MATERIAL WILL BE UTILIZED TO PROVIDEBED AND BANK STABILIZATION, COVER AND/ORNESTING HABITAT.7.ALL DISTURBED AREAS WILL BE STABILIZED USINGMULCHING AND SEEDING AS DEFINED IN THECONSTRUCTION SPECIFICATIONS AND THE APPROVEDSEDIMENTATION AND EROSION CONTROL PLANS.Botanical NameCommon Name% Proposedfor Plantingby SpeciesWetlandToleranceRiparian Buffer Bare Root Plantings – Overstory(Proposed 8’ x 8’ Planting Spacing @ 680 Stems/Acre)Betula nigraRiver Birch7%FACWTilia americanaBasswood7%FACUPlatanusoccidentalisAmericansycamore7%FACWNyssa sylvaticaBlack Gum6%FACLiriodendrontulipiferaTulip-poplar7%FACUQuercus albaWhite oak6%FACUQuercus rubraWhite oak3%FACUFraxinuspennsylvanicaGreen Ash3%FACWRiparian Buffer Bare Root Plantings – Understory(Proposed 8’ x 8’ Planting Spacing @ 680 Stems/Acre)Diospyros virginianaPersimmon7%FACAmelanchiervirginianaCommonserviceberry5%FACMagnolia tripetalaUmbrella magnolia6%FACUCarpinus carolinianaIronwood6%FACHamamelisvirginianaWitch-hazel6%FACUAsimina trilobaPaw Paw6%FACLindera benzoinSpicebush6%FACWAlnus serrulataHazel Alder6%OBLCorylus americanaHazelnut6%FACURiparian Buffer Live Stake Plantings - Streambanks(Proposed 2’-3’ Spacing @ Meander Bends and 6’-8’ Spacing @Riffle Sections)SambucuscanadensisElderberry20%FACWSalix sericeaSilky Willow30%OBLSalix nigraBlack Willow10%OBLCornus amomumSilky Dogwood40%FACWBotanical NameCommon Name% Proposedfor Plantingby SpeciesSeeding Rate(lb/acre)WetlandTolerancePermanent Herbaceous Seed Mixture – Streambank, Floodplain, Wetlands andRiparian Buffer Areas(Proposed Seed Rate @ 15 lbs/acre)Andropogon gerardiiBig blue stem10%1.50FACDichantheliumclandestinumDeer Tongue15%1.50FACWCarex crinataFringed sedge10%2.25FACW+ChasmanthiumlatifoliumRiver oats5%1.50FACUElymus virginicusVirginia wild rye15%1.50FACJuncus effususSoft rush5%2.25FACW+Panicum virgatumSwitchgrass10%1.50FAC+Eutrochium fistulosumJoe-pye-weed5%0.75FACWSchizachyriumscopariumLittle blue stem10%0.75FACUTripsacum dactyloidesEasterngamagrass5%0.75FAC+Sorghastrum nutansIndiangrass10%0.75FACUPlanting DatesBotanical NameCommon NameApplication Rate(lbs/acre)September toMarchSecale cerealeRye Grain (Cool Season)130April to AugustUrochloa ramosaBrowntop Millet (WarmSeason)40BEGIN CONSTRUCTION R1STATION 10+00167/26/19100026CAT/APLREVEGETATIONPLAN16-18_HORNE_CREEK_REVEGETATION_PLANS.DWGHORNE CREEKTRIBUTARIESMITIGATIONPROJECTCATN/A1" = 100'END CONSTRUCTION R1STATION 23+585025050100GRAPHIC SCALE 9+5510+0011+00 12+00 13+0014+0015+0016+00 17+0018+0019+0020+0010+0011+0012+0012+57CECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECE CE CECECECE CE CE CE CECE CECECECECECECECECECECECECECECECEEND CONSTRUCTION R2BEGIN CONSTRUCTION R4STATION 13+13 END CONSTRUCTION R3STATION 12+55BEGIN CONSTRUCTION R4APLANTINGS ON THE RIGHTTERRACE OF R2 AND THE LEFTTERRACE OF R3 TO BE LOWSTATURE UNDERSTORYVEGETATIONBEGIN CONSTRUCTION R2STATION 9+49END CONSTRUCTION R2BEGIN CONSTRUCTION R4STATION 13+13 END CONSTRUCTION R3STATION 12+55BEGIN CONSTRUCTION R3STATION 10+51BEGIN CONSTRUCTION R4APLANTINGS ON THE RIGHTTERRACE OF R2 AND THE LEFTTERRACE OF R3 TO BE LOWSTATURE UNDERSTORYVEGETATIONCAUDLE RO A D (S.R. 2 0 7 0 ) R/W WIDTH 60' P E R D B : 2 9 0 P G : 4 6 2 NELSON B. KIRBY, JR. & WIFE NANCY C. KIRBYPIN: 5952-00-77-8215DB: 458 PG: 236WILLIAM F. FULP & WIFE DEBRA P. FULPPIN: 5952-00-77-4688DB: 521 PG: 1524MARY ELLEN BROWN SMITHPIN: 5952-00-77-2795PORTION OF DB 370 PG 890PR O F ESSIONALSEAL36916ENGINEE R N O R THCAROLINACHRISTOPAT O M . ICHERSNO.REVISIONSDATEPROJECT NAMESHEET NUMBERDESIGNED BY :DRAWN BY :DATE :PROJECT NO. :FILENAME :DRAWING INFORMATIONSHEET NAMEHORIZ. SCALE :VERT. SCALE :PROJECT ENGINEERAENGINEERING SERVICES BYWLS ENGINEERING, PLLCFIRM LICENSE NO. P-1480BCDEFWATER & LAND SOLUTIONS7721 Six Fork Rd., Suite 130Raleigh, NC 27614(919)614-5111waterlandsolutions.comDRAFT MIT PLAN12-13-18SURRY COUNTY, NCDRAFT FINAL MIT PLAN5-8-19FINAL MIT PLAN7-26-19N O T F O R C O N S T R U C T I O N P R E L I M I N A R Y P L A N S177/26/19100026CAT/APLREVEGETATIONPLANN/A16-18_HORNE_CREEK_REVEGETATION_PLANS.DWGHORNE CREEKTRIBUTARIESMITIGATIONPROJECTCAT5025050100GRAPHIC SCALE1" = 100'PLANTING ZONESRIPARIAN BUFFER RESTORATIONMATCHLINE - SEE SHEET 18 WLBWLB WLB WLB WLB WLB WLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLB20+0021+0022+0023+0024+0025+0026+0027+002 8 + 0 0 29 + 00 30+0031+0032+0033+0034+0035+0010+00 11+0012+0012+7010+00 11+0012+0012+32CECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECE CE CE CE CE CE CECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECE CE CE CECECECECECECECECEWLBWLB WLB WLB WLB WLB WLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBWLBBEGIN CONSTRUCTION R4ASTATION 10+98BEGIN CONSTRUCTION R4BSTATION 10+72END CONSTRUCTION R4BEGIN CONSTRUCTION R5STATION 25+19END CONSTRUCTION R4BSTATION 12+24END CONSTRUCTION R4ASTATION 12+65BEGIN CONSTRUCTION R4ASTATION 10+98BEGIN CONSTRUCTION R4BSTATION 10+72MARY E. SMITHPIN: 5952-00-76-5174DB: 318 PG: 904, DB: 527 PG: 589,AND DB: 528 PG: 491REFERENCE: DB: 138 PG: 368BROWN FARMS OF SURRY COUNTY, LLC.PIN: 5952-00-56-7091DB: 936 PG: 448, TRACT 7FOR PROPERTY DESCRIPTION SEE DB: 709 PG: 1094REFERENCE: DB: 203 PG: 448PORTION OF PB: 9 PG: 191, TRACT AFOR BOUNDARY LINE AGREEMENT SEE DB: 386 PG: 342MATCHLINE - SEE SHEET 19 MATCHLINE - SEE SHEET 18 PR O F ESSIONALSEAL36916ENGINEE R N O R THCAROLINACHRISTOPAT O M . ICHERSNO.REVISIONSDATEPROJECT NAMESHEET NUMBERDESIGNED BY :DRAWN BY :DATE :PROJECT NO. :FILENAME :DRAWING INFORMATIONSHEET NAMEHORIZ. SCALE :VERT. SCALE :PROJECT ENGINEERAENGINEERING SERVICES BYWLS ENGINEERING, PLLCFIRM LICENSE NO. P-1480BCDEFWATER & LAND SOLUTIONS7721 Six Fork Rd., Suite 130Raleigh, NC 27614(919)614-5111waterlandsolutions.comDRAFT MIT PLAN12-13-18SURRY COUNTY, NCDRAFT FINAL MIT PLAN5-8-19FINAL MIT PLAN7-26-19N O T F O R C O N S T R U C T I O N P R E L I M I N A R Y P L A N S187/26/19100026CAT/APLREVEGETATIONPLANN/A16-18_HORNE_CREEK_REVEGETATION_PLANS.DWGHORNE CREEKTRIBUTARIESMITIGATIONPROJECTCAT1" = 100'PLANTING ZONESRIPARIAN BUFFER RESTORATIONMATCHLINE - SEE SHEET 17 5025050100GRAPHIC SCALE OHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHE36+0037+0038+0039+0040+00 4 1 + 0 0 4 2 + 0 0 43+0044+0045+0046+004 7 + 0 0 4 8 + 0 0CECECECECECECECECECECECECECECECECECECECECECECECECECECECECE CECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECECEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEEND CONSTRUCTION R5STATION 48+12PRIVATE DR IVEKEVIN E. BROWN & WIFEPATRICIA G. BROWNPIN: 5952-00-65-4316DB: 1126 PG: 875KEVIN E. BROWN & WIFEPATRICIA G. BROWNPIN: 5952-00-63-4989DB 802 PG 810JANE B. BOGERPIN: 5952-00-73-3427DB: 945 PG: 886, TRACT 2THERESA JAMES & MARTHA JAMESPIN: 5952-00-75-6182ESTATE FILE: 13E PG: 40DB: 488 PG: 1305BROWN FARMS OF SURRY COUNTY, LLC.PIN: 5952-00-56-7091DB: 936 PG: 448, TRACT 7FOR PROPERTY DESCRIPTION SEE DB: 709 PG: 1094REFERENCE: DB: 203 PG: 448PORTION OF PB: 9 PG: 191, TRACT AFOR BOUNDARY LINE AGREEMENT SEE DB: 386 PG: 342KIGER ROAD (S.R. 2071)NO DEED FOUND FOR R/W TO N.C.D.O.T.MARY E. SMITHPIN: 5952-00-76-5174DB: 318 PG: 904, DB: 527 PG: 589,AND DB: 528 PG: 491REFERENCE: DB: 138 PG: 368PR O F ESSIONALSEAL36916ENGINEE R N O R THCAROLINACHRISTOPAT O M . ICHERSNO.REVISIONSDATEPROJECT NAMESHEET NUMBERDESIGNED BY :DRAWN BY :DATE :PROJECT NO. :FILENAME :DRAWING INFORMATIONSHEET NAMEHORIZ. SCALE :VERT. SCALE :PROJECT ENGINEERAENGINEERING SERVICES BYWLS ENGINEERING, PLLCFIRM LICENSE NO. P-1480BCDEFWATER & LAND SOLUTIONS7721 Six Fork Rd., Suite 130Raleigh, NC 27614(919)614-5111waterlandsolutions.comDRAFT MIT PLAN12-13-18SURRY COUNTY, NCDRAFT FINAL MIT PLAN5-8-19FINAL MIT PLAN7-26-19N O T F O R C O N S T R U C T I O N P R E L I M I N A R Y P L A N S197/26/19100026CAT/APLREVEGETATIONPLANN/A16-18_HORNE_CREEK_REVEGETATION_PLANS.DWGHORNE CREEKTRIBUTARIESMITIGATIONPROJECTCAT6030060120GRAPHIC SCALE1" = 100'MATCHLINE - SEE SHEET 18 PLANTING ZONESRIPARIAN BUFFER RESTORATION Water & Land Solutions Horne Creek Tributaries Mitigation Project Appendix 2 – Site Analysis Data/Supplementary Information Habitat Assessment Scores and Taxa List Existing Cross-Section and Longitudinal Profile Data Particle Size Distribution (Sediment Samples) BANCS (BEHI/NBS) Method Estimates Watershed Information and Site Runoff Volume NC Rural Piedmont Regional Curve Comparison USGS Regression Flow Analysis Stream Quantification Tool Reach Summary Design Criteria and Stream Morphology Parameters Table HEC-RAS Output Buffer Tool Excel Output Site Photographs Appendix A — Mountain/Piedmont Habitat Assessment Form I 1 r 13 Revision 8 Habitat Assessment Field Data Sheet Mountain/ Piedmont Streams Biological Assessment Branch, DWR 110TALSIZORE Direclions for use: The observer is to survey a minimum of 100 meters with 200 teeters preferred of stream, preferably in an upstream direction starting above the bridge pool and the road right-of-way. The segment which is assessed should represent average stream conditions. To perform a proper habitat evaluation the observer needs to get into the stream. To complete the form, select the description which best fits the observed habitats and then circle the score. If the observed habitat falls in between two descriptions, select an intermediate score. A final habitat score is determined by adding the results from tine different melrics. 5lrestm(�T'o rjj- Crcrh : I Location/road: ,,,,, 4 - (Road Namc 'Ed )County Strer„ �/ r r_. Date 6-11- rY CC# Basin 1i7)k;n Subbasin UUL 63&Nof01 Observers)JM,JM8 Type of Study: ❑ Fish 1913enthos ❑ Basinwide []Special Study (Describe) Latitude36,afa1N5° Longitude -TO.50y'/7-9° Ecoregion: ❑ 141T UP ❑ Slalc l;elt ❑ Triassic haste Water Quality: TcmperatureX. i T DO -7. 01 mg/I Conductivity (corr.) iff"I ) µS/cm pi-1 6AI Physical Characterization: Visible laud use refers to immediate crest that you can see from sampling; location - include what you estimate driving thru the watershed in watershed land use. Visible Land Use:—5--morest %Residential 95 %Active Pasture °p Active Crops "Tallow Fields Commercial `1111ndustrial "Wther - Describe: Watershed land use' ❑Forest UAgriculture ❑Urban U/Animal operations upstream Width: (meters) Stream %, 5� Channel (at top of bank)_ Stream Depth: (in) AvgO.07 Max 0.15 ❑ Width variable ❑ Large river -,25m wide Bank Height (from deepest part of riffle to lop of bank -first flat surface you stand oft): (m)_1. Bank Angle: 6 or ❑ NA (Vertical is 90°, horizontal is 0°. Angles ., 90' indicate slope is towards void -channel, 90" indicate slope is away from channel. NA i f bank is too low for bank angle to matter.) Whannelized Ditch eeply incised -steep, straight banks ❑ uth banks undercut at bend ❑Channel filled in with sediment ❑ Recent overbank deposits 1013ar development ❑Buried structures ❑Exposed bedrock 37 Appendix A — MountainAedmont Habitat Assessment Form ❑ Excessive periphyton y with ❑ I leavy fiitamentous algae growth ❑Green tinge ❑ Sewage smell Manmade Stabilization: #Y- ❑Rip -rap, cement, gabions ❑ Sedimentlgmde-control structure ❑Berm+levee Flow conditions - 01-1ligh IMNormal ❑Low Turbidity: ❑Clear & Slightly Turbid ❑Turbid ❑Tannic ❑Mi y ❑Colored (from dyes) Good potential for Wetlands Restoration Project?? ❑ 1'ES EINO Details Channel Flow Status Useful especially under abnormal or low flow conditions. A. Water reaches base of both lower banks, minimal channel substrate exposed ........................... ❑ B. Water fills >75% of available channel, or <35% of channel substrate is exposed ........................ ❑ / C. Water fills 35-75% of available channel, many logs/snags exposed.—,. ....... � D. Root mats out of water......................................................................................................... ❑ E. Very little water in channel, mostly present as standing pools ..................................................... ❑ a Weather Conditions: r ,E6 1' _ Photos: ON ❑Y ❑ Digital 035mtn Remarks: 1. Channel Modification A. channel natural, frequent bends........................................................................................................ Sc e B. channel natural, infrequent bends (cltannelization could be old) ............... —................................ -- 4 C, some channelization present.............................................................................................................. 3 D. more extensive channelization, >40% of stream disrupted............... 2 E. no bends, completely channelized or rip rapped or gabioned, etc.,..,,..,...,,.. .................................... 0 ❑ E %-idcnce of dredging ❑Geidence of desnog.ging—uo large unody debris in stream ❑Banks of uniform shape/height Remarks _ Subtotal 5 11. Instream Habitat: Consider the percentage of the reach that is favorable for benthos colonization or fish cover. If >700b of the reach is rocks, I type is present, circle the score of IT Definition: leafpacks consist of older leaves that are packed together and have begun to decay (not piles of leaves in pool areas). Mark as Rare, Common. or Abundant. 2Rocks Macrophytes -Sticks and leafpacks Snags and logs Undercut banks or root mats Appendix A — Mountain/Piedmont Habitat Assessment Form AMOUNT OF REACH FAVORABLE FOR COLONIZATION OR COVER 4 or 5 types present ................. 3 types present ......................... 2 types present ......................... I type present ........................... No (5-pes present ....................... ❑ No s►oudv scgoauon in riparian xont; Remarks >70% 40-70% 2040% <201-o Score Score Score Score 20 IG 12 8 19 15 Il 7 18 14 I0 G Q 13 9 i Subtotal _ Ill. Bottom Substrate (silt, sand, detritus, gravel, cobble, boulder) Look at entire reach for substrate scoring, but only look at riffle for entbeddedness, and use rocks from all parts of riffle -look for "anud line" or difficulty extracting rocks. A. substrate with good mix of gravel, cobble and boulders Score 1. entbeddedness <20% (very little sand, usually only behind large boulders) ......................... 15 2. entbeddedness 20-40%.......................................................................................................... 12 3. entbeddedness 40-80%.................... ....................................,.............................................._.. 8 4. erttbeddedutess>80".0.........,................................................................................................... 3 B. substrate gravel and cobble . entbedded ness<2090,................ ........................................................................................... 2. embeddedness 20-40%......................................................................................................... 3. eattbeddeduess 40-80% ............................................._,....,,..,..,,........................................... G 4. embeddeduess>80% ............................................................................................................ 2 C. substrate mostly gravel 1. entbeddedness<50° .......................... ...................................,._............................................. 8 2. embedded rtess>50%............................................................................................................ 4 D. substrate homogeneous 1. substrate nearly all bedrock................................................................................................... 3 2. substrate nearly al l sand ................ ......... 3 3. substrate nearly all detritus.................................................................................................... 2 4. substrate nearly all sill/ clay .................................................................................................. Remarks Subtotal j 4-11 W. Pool Variety Pools are areas of deeper than average maximum depths with little or no surface turbulence. Water velocities associated with pools are always slow. Pools may take the form of "pocket water", small pools behind boulders or obstructions, in large high gradient streams, or side eddies. A. Pools present Score 1. Pools I-requent (>30%of200m area surveyed) a. variety of pool sizes............................................................................................................... 10 b. pools about the same size (indicates pools tilling in)............................................................ 8 39 Appendix A- MountainlPiedmont Habitat Assessment Form 2.Pools Infrequent (,-3V%wythe IOUn -area surveyed) uvariety o[pool sizes ............................................ -.---_------.---------. /6) h.pools about the same size ...................................................................................................... -4 B. Pawls ........ '--_--~.-----.-.............. ........... ............... .- O /v Ou�o�u|_�"_ Omm|hmmm�m O GI/Silt botioni O�mopmb�mx��d�U Remarks----��7--------- -- ----- ---- ----- ' PoQcTnm|_Y"?— V,R|0Oe lVubi:w$ Dcfinidon: Ri[Ocio-area o[rrurmhwn'cunhedebris dam. ornarrow chunnclorcu Riffles Frequent Riffles Infrequent Score 4.wc|idefined riffle and run, riffle uswide os stream and extends 2Xwidth o[stvxum.... b/ 12 B. riffle as wide o*stream but riffle length is not ZJKstream width ------.... 14 7 C. riffle not as wide omstoamund r|Olc|cngth is not2X stream width ... ........ ............. .. 10 3 D. riffles 0 -_- -----------------.-----------_---- . Channel Slope: NQTyn1ca|for �O area St*ep-�oOuv, [3LuvrUmstr eam Subto*uy/��� V1. Bank Stability and Vegetation A. Erosion |. No, orvery little, erosion present .......................... —.......... IErosion mostly at outside of meanders ................. ............... I-0/ 3- Less than SOv6n[banks eroding ......... ................................... 3 4.Massive cn,don-................................................................... 0 Erosion Score B. Bank Vegetation i Mostly mature trees (�-|%~DBH) ? %. Mostly small trees ("|2^DBH) present, large trees rare --j 3. Notrees oil batik. call have sonic shrubs and grasses .......... el%') 4.Mostly grasses urmosses oil batik -------------Z ,l l Little ornobatik %cgmmion bare soil cverywhcm,.-.,,,,-O Vegetation Score Remarks Subto(al. Vlll. Light Penetration Canopy is defined as Irce or vegmve cover directly above tile stream's surface. Canopy would block out sunlight when the suit is directly overlicad- Note shading from mountains, but not use to score this metric. SCON A.S(reumAvNh good canopy with sonic breaks for light penetration ......................... -........ _ iO DLStream with full canopy - breaks for light penetration absent ..................................................... 8 C. Qoreon with partial oonnpy' sunlight and shading are essentially oqmd-'...-------'— [1Stream with minimal canopy '6oUsun inall but ufew areas ....................................................... Z E. Mmcanopy and no ........... .............................................................................. 0 40 Appendix A — Mountain/Piedmont Habitat Assessment Form Remarks — — -- Subt0tal VIII. Riparian Vegelmive Zone Width Definition: Riparian zone for this form is area o1'natural vegetation adjacent to stream (can go beyond noodplain). Definition: A break in the riparian zone is any place on the stream banks which allows sediment or pollutants to directly enter the stream, such as paths down to stream, storm drains, uprooted trees, otter slides, etc. IWE UPSTREAM Dominant vegetation: 1 rees ❑ Shrubs ❑ Grasses ❑ Weeds/old Geld ❑Exotics (kudzu, etc) A. Riparian zone intact (no breaks) I. width • 18 meters..................................................................................... 2. %vidth 12-18 meters................................................................................... 3. %vidth 6-12111clers..................................................................................... 4. width < G meters...................................................................................... B. Riparian zone not intact (breaks) 1. breaks rare ss. tividth 18 meters......................................................................... b. width 12-18 meters....................................................................... c. %vidth 6-12 meters....................................................................... d. width < G meters......................................................................... 2. breaks common a. %vidth > 18 meters......................................................................... b. width 13-18 nlcters...................................................................... c. %vidtlt 6-12 meters....................................................................... d. width < G meters......................................................................... Remarks ❑ Disclaimer -form filled out, but score doesn't match subjective opinion -atypical stream. Llt. Bank Rt, hank Score Score 5 5 4 4 3 3 4 4 3 3 2 2 1 1 3 3 I 1 Subtotal Page Total 3 TOTAL SCORE 41 11;13 Revision 8 Appendix A — Mountaml edmont Habitat Assessment Form Habitat Assessment Field Data Sheet Mountain/ Piedmont Streams Biological Assessment Branch, DWR OTAL SCORE Directions for use: The observer is to survey a minimum of 100 meters with 200 meters preferred of stream, preferably in an upstream direction starting above the bridge pool and the road right -of --way. The segment which is assessed should represent average stream conditions. To perform a proper habitat evaluation the observer needs to get into the stream. To complete the form, select the description which best fits the observed habitats and then circle the score. If the observed habitat falls in between two descriptions, select an intermediate score. A final habitat score is determined by adding the results from the different metrics. Streaml)T.A H'-" (17, -Uy Location/road: PA,,&(Road Name�in'�)County r/y Date 6 L'- p CC# Basin Al' Subbasin)- U6, J)J 6 q01 61 Observer(s) '� . JM3 'type of Study: ❑ Fish U enthos ❑ Basinwide 0Special Study (Describe) Latitude36,.&Lft" Longitude t%SU3GSI ° Ecoregion: ❑ MT E P ❑ Stale Dell ❑ Triassic Basin Water Quality: Temperature �9 ,2_°C DO 7 c? mg/I Conductivity (corr.) 69 9 pS/cm pl-1 Physical Characterization: Visible land use refers to immediate area that you can see from sampling location - include what you estimate driving thru the watershed in watershed land use. 1 Visible Land Use: _�—%Forest 5 %Residential �°/oActive Pasture /S %Active Crops 0oFallow Fields on Commercial %Industrial ZAgriculture %Other - Describe: Watershed land use` hJF'orest ❑Urban Animal operations upstream Width: (meters) Stream m Channel (at top of bank) I- Stream Depth: (m) Avg Q. Max'1. _ ❑ Width variable ❑ Large river >25m wide / Bank Fleight (from deepest pan of riffle to top of bank -first flat surface you stand on): (m) Bank Angie: V.�_° or ❑ NA (Vertical is 90°, horizontal is 01. Angles 90" indicate slope is towards mid -channel, 90' indicate slope is away from channel. NA if bank is too low for bank angle to matter.) ❑ Channelized Ditch ❑Deeply incised -steep, straight banks Moth banks undercut at bend ❑Channel filled in with sediment ❑ Recent overbank deposits ❑Bar development ❑Buried structures ❑Exposed bedrock 37 Appendix A — Mountain/Piedmont Habitat Assessment Form ❑ Excessive periptryton gr wdi ❑ Heavy filamentous algae growth ❑Green tinge ❑ Sewage smell Manmade Stabilization_ NrN//❑Y. ❑Rip -rap, cement, gabions ❑ Sediment/grade-control structure ❑Berm/levee . Flow conditio ; ❑High 6Crmal Mow Turbidity: EfClear ❑ Slightly Turbid ❑Turbid ❑Tannic ❑Mi y ❑Colored (from dyes) Good potential for Wetlands Restoration Project?? ❑YES O Details Channel Flow Status Useful especially under abnormal or low flow conditions. A. Water reaches base of both lower banks, minimal channel substrate exposed ............................ ❑ B, Water fills >75% of available channel, or -�2 % of channel substrate is exposed ........................ ❑ C. Water fills 25-75%of available channel, many logs/snags exposed ............. ......... ,.................. -.. 6�' D. Root mats out of water .......... .............................».,..,..,..,..,..,............... .......................... .........-..... ❑ E. Very little water in channel, mostly present as standing pools .................................................... ❑ Weather Conditions: Llear. fff Photos: ON ❑Y ❑ Digital 035mm Remarks: 1. Channel Modification Score A. channel natural, frequent bends.... . . ................................!;T— B. channel natural, infrequent bends (channelization could be old) ...................................................... 4 C_ some channelization present..............................................—........... ».............................. ............... 3 D. more extensive channelization, >40% of stream disrupted ...... ...................... ................_.....,,.,......... 2 E. no bends_ completely channelized or rip rapped or gabioned, etc ....................... .......................... 0 ❑ E%idence of dredging [Evidence of desnagging=no large woody debris in stream 1313anks of uniform shape/height Remarks_ .. Subtotal 11, Instream Habitat: Consider the percentage of the reach that is favorable for benthos colonization or fish cover. If>70°% of the reach is rocks, I type is present, circle the score of IT Definition: leafpacks consist of older leaves that are packed together and have begun to decay (not piles of leaves in pool areas). Mark as Rare Common or Abundant. Rocks Macrophytes Sticks and leafpacks Snags and logs '_Undercut banks or root mats 3B Appendix A — Mountain/Piedmont Habitat Assessment Form AMOUNT OF REACH FAVGRABIX FOR COLONIZATION OR COVER 4 or 5 types present ................. I types . . ......... . . 2 types proserm ......................... I type present ....... No lypes proscnt ....................... 0 No mvod}- vcguiaiiGn in riparian zone Remarks >70% 40-70% 20-40P/L, <20% Score Stare ---3cqLe s�co 20 16 12 9 19 15 11 7 Is (9 10 6 67 13 9 1 0 Sub4otal/V 111. Hostem Substrate (sik, sand, detritus. gravel, cobble, boulder) Look at enure reach for substrate scoring but only look at riffle for embeddedness, nod use rocks from all parts of riffle -look for LIMed Ii Wor ditriculoy exuaci i rkg racks. A. saWra to with good mix of gavel, cobble and boulders §SM 1, mbcddedmss <204/o (very finle sand, usually only behind large boulden)L ...... . ............... 65 2. embeddedness 2040111z.-- . . ...... . ....... -..— ..... ................. -- ............... . .. . ... . ...................... 12 3. embeddedness 40-90% ................................. .... . . . . . . ................................................ 8 4. embeddedness > WIL. ............................................................ . ... . ............................ .... 3 IL subsi rate gravel and cobble 1, embeddedness .... . .... . ........................................ 14 2. embeddedness 1040%. ........ ............................................................ . . .................... 0 3. embeddedness 4MO%................ ..........---- .... . .................. ......... ................... ..... -- 6 4, ambeddeduess >90%,... .............. ............ --- .. . ......... . ....... ... 2 C. substrate mostly gravel I. emk;cddedness <500/a ...... .............................. . ................... 2. enibeddedsess>5100/6 ............... --- ........... . . . . . . .................................................. ... 4 D. subsimite homogeneous 1. substrate nearly nil bedmck.---..---....................................... 3 2. substrate nearly all sund,........................................ 3 3. substrate nearly all delfilus . ... . ....... . .... . ............................ ....... 2 4. substrate nearly til I silt) clay ............ . ......................... --- ...... . ........................................... I Remarks Subtotal IV. Pool Variety Pools are areas of deeper Than average maximum depths with Mile or no surface turbaLme. Water v6x ities associated %whii pools an always slow. Pools may lake the (onn of 'pocket wear', small pools behind boulders or oWtvabns, in large high gra&mt stream, or side eddies, A. Peek present Score 1, Pools FmVefft (>30% of 200m area sum*) a. variety of pool sizes .................................. ...................................................... ...... b. pools abow ihe maw size (indicates pools filling in) ........................................................... 39 Appendix A — MountairWiedmont Habitat Assessment Form 2. Pools Infrequent (<30% of the 200m area surveyed) a. variety of pool sizes............................................................................................................... 6 b, pools about the same size...................................................................................................... 4 B. Pools absent............ ....... .....................».............................................................. 0 absent.......___. .... ..... .... . - - - Subtotal-8— 0 fool bottom boulder-cobble=hard Q Rottom sandy -sink as you walk ElSilt bottom ❑ Some pools over vender depth Remarks _ _ Page Total y V. Riffle Habitats Definition: Riffle is area of reaeration-can be debris dam, or narrow channel area. Riffles Frequent Riffles Infrequent Score Score A. well defined riffle and run. riffle as wide as stream and extends 2X width of stream.... 1� 12 B. riffle as wide as stream but riffle length is not 2X stream width .................................... 14 7 C. riffle not as wide as stream and riffle length is not 2X stream width ............................. 10 3 D. riffles absent ....... ................,,........................ ................................................................ 0 Channel Slope. ❑Typical for area 13Steep--Fast flow OLow=like a coastal stream Subtotal ;a VI. Bank Stability and Vegetation A. Erosion I, No, or very little, erosion present..........................................07 2. Erosion mostly at outside of meanders ....................._..__._...._.._ 6 3. Less than 50% of banks eroding ............................................ 3 4. Massive erosion..................................................................... 0 Erosion Score B. Bank Vegetation I. Mostly mature trees (>12" DBH) present ..............................7 2. Mostly small trees ( 12" DBH) present, large trees rare .....5 3- No trees on bank, can have some shrubs and grasses....,....... 3 4- Mostly grasses or mosses on bank.,.,., ................................... 2 5. Little or no bank vegetation, bare sail everywhere ................ 0 Vegetation Score Remarks. _ _ _ _ Subtotal_y V11. Light Penetration Canopy is defined as tree or vegetative cover directly above the stream's surface. Canopy would block out sunlight when the sun is directly overhead. Note shading from mountains, but not use to score this metric. Score A. Stream with good canopy with some breaks for light penetration ................ .... .. .................. 10 B. Stream with full canopy - breaks for light penetration absent ..................................................... f 8 C. Stream with partial canopy - sunlight and shading are essentially equal— ............. __ .. . ........... 7 D, Stream with minimal canopy - full sun in all but a few areas ....................................................... 2 E. No canopy and no shading._. .... ............ ......., » . » . »..........................................................— 0 40 Remarks.. Appendix A — Mountain/Piedmont Habitat Assessment Form Subtotal J- Vill. Riparian Vegetative Zone Width Vermilion. Riparian woe for this form is area o(natural vegetat ion adjacent lo simarn (can go beyond floodplain). Definiti on, A break in the riparian ziDne is any place on the stream banks which allows sediment or pollutants to d ired ly enW ilhe sirmm, such as paths down to sirearn, storm drains, up ru u ted [rats, otter slides, etc. FACE UPSTREAM Dominant vegetation. 0 Tr"s OShrobs 0 Grasses 0 Wcedskoki rield "eics (kudzu, etc) A- Riparian zone inlocill (no breaks) 6. width > 19 melen......................... . .... ................. --- .............. 2. width 6 2- 6 9 meters ......... .................. 3. width &12 meters....,... . .......... ............................ 4. width < 6 meierL ........................... .................................. B. Riparian zone not intact (breaks} 1, breaks rare a. width > IS meters ......................... ....... . ............... -- ...... ...... K width 12-19 . ....... .................... -- ........ c, width 6-12 meters ....... ....... . ............ d. width < 6 mewrs--.— . ............................................................. 2, breaks common a, width -> 18 meters.. . .... . ......... . ................................................... Kwidth 12-13 n-wilem .......... ................. --- ..... -- . . ...................... c. %vidth 6-12 melers.. .... ...... . . . ...................................................... d. width < 6 motem ............... ......... . ............................................. Remarks 0 Disclaimer -farm filled out, but score doosul match subjective opinion atypical sucarn. Lft- Bank Rt. Bank Score Score 5 5 4 4 3 3 3 2 2 1 1 0 0 sublotal. Page Tc4 al—q 0 IMALSCORE—LO 41 Taxa / Biotic Index Value Horne 1 Horne 2 EPHEMEROPTERA Family Baetidae Baetis flavistriga (6.8) Baetis pluto (3.4)C Diphetor hageni (1.1)R Family Caenidae Caenis spp (6.8) Family Ephemerellidae Telagonopsis deficiens (2.6) Family Heptageniidae Leucrocuta spp (2.0) Maccaffertium modestum (5.7)A Family Leptophlebiidae Habrophlebia vibrans (0.3)R Habrophleboides spp C Paraleptophlebia spp (1.2)A PLECOPTERA Family Perlidae Agnetina flavescens (1.1)R Eccoptura xanthenes (4.7)C Isoperla holochlora (1.2) TRICHOPTERA Family Glossosomatidae Glossoma spp (1.4) Family Hydropsychidae Cheumatopsyche spp (6.6)A Diplectrona modesta (2.3)C Hydropsyche betteni (7.9)R C Family Limnephilidae Neophylax atlanta (1.6)R Family Odontoceridae Psilotreta spp (0.5)R Family Philopotamidae Chimarra spp (3.3)A Family Rhyacophilidae Rhyacophila carolina (0.4)R MISC DIPTERA Family Culicidae Aedes spp R Anopheles (8.6)R Culex spp R Family Dixidae Dixa spp (2.5)R C Family Simuliidae Simulium spp (4.9)A R Family Tabanidae Chrysops (6.7) Family Tipulidae Dicranota spp (0)R Hexatoma spp (3.5) Tipula spp (7.5)R A DIPTERA; CHIRONOMIDAE Chironomus spp (9.3)A Corynoneura spp (5.7) Cricotopus bicintus (C/O sp 1) (8.7) Eukieferiella claripennis (6.2)R Limnophyes spp R Micropsectra polita (2.4)C Microtendipes pedellus (3.9) Nilotanypus fimbratus (4.9) Parametriocnemus lundbecki (3.7) Phaenopscetra obediens gp (6.6) Polypedilum aviceps (3.6)R R Polypedilum fallax (6.5) Polypedilum flavum (5.7)R Polypedilum illinoense (8.7)R Polypedilum tritum Psectrotanypus dyari (10) Rheocricotpus glabricolis (4.7)R Rheotanytarsus spp (6.5)R Stictochironomus devinctus (5.4) Tanytarsus acifer/buckleyi (6.6)R Thienemaniella spp (6.4) Thienemannimyia group (8.4)R C Tvetenia bavarica gp (E sp 1) (3.6) Zavrelimyia spp (6.1)R COLEOPTERA Family Dryopidae Helichus spp (4.1)R Family Dytiscidae Neoporus spp (5.0) Platambus spp Prodaticus spp R Family Elmidae Stenelmis spp (5.6)C Family Hydrophilidae Cymbiodyta spp R Family Psephenidae Psephenus herricki (2.3) Family Ptilodactylidae Anchytarsus bicolor (2.4)A ODONATA Family Aeshnidae Boyeria vinosa (5.6)R Family Calopterygidae Calopteryx spp (7.5)R Family Cordulegasteridae Cordulegaster spp (5.7)R Family Gomphidae Gomphus spp (5.9) Stylogomphus albistylus (5.0) OLIGOCHAETA Family Lumbriculidae (7.0)R Family Naidae Nais spp (8.7)R Pristina spp (7.7)R Slavina appendiculata (8.4) MEGALOPTERA Family Corydalidae Nigronia fasciatus (6.1)R CRUSTACEA Family Asellidae Caecidotea spp (8.4) MOLLUSCA Family Ancylidae Ferrissia spp (6.6) Family Pleuroceridae Elimia spp (2.7)C OTHER TAXA Family Planariidae Dugesia tigrina (7.1) Total Taxa Richness 15 38 EPT Taxa Richness 1 15 EPT Abundance 1 61 Biotic Index 6.53 4.99 RIVERMORPH STREAM CHANNEL CLASSIFICATION ---------------------------------------------------------------------- River Name: Horne Creek Reach Name: Horne Creek <-- This is not a Reference Reach Drainage Area: 0.059 sq mi State: North Carolina County: Surry Latitude: 36.2841 Longitude: 80.5036 Survey Date: 11/21/2017 ---------------------------------------------------------------------- Classification Data Valley Type: Type VIII(a) Valley Slope: 0.0366 ft/ft Number of Channels: Single Width: 3.13 ft Mean Depth: 0.95 ft Flood-Prone Width: 12.95 ft Channel Materials D50: 0.39 mm Water Surface Slope: 0.0326 ft/ft Sinuosity: 1.12 Discharge: 12 cfs Velocity: 4.03 fps Cross Sectional Area: 2.98 sq ft Entrenchment Ratio: 4.14 Width to Depth Ratio: 3.29 Rosgen Stream Classification: E 5b XS13NGround PointsBankfull IndicatorsWater Surface PointsElevation (ft)Horizontal Distance (ft)9359600310Wbkf = 3.13Dbkf = .95Abkf = 2.98 RIVERMORPH STREAM CHANNEL CLASSIFICATION ---------------------------------------------------------------------- River Name: Horne Creek Reach Name: Horne Creek <-- This is not a Reference Reach Drainage Area: 0.059 sq mi State: North Carolina County: Surry Latitude: 36.2841 Longitude: 80.5036 Survey Date: 11/21/2017 ---------------------------------------------------------------------- Classification Data Valley Type: Type VIII(a) Valley Slope: 0.0366 ft/ft Number of Channels: Single Width: 5.9 ft Mean Depth: 0.45 ft Flood-Prone Width: 6.44 ft Channel Materials D50: 0.39 mm Water Surface Slope: 0.0326 ft/ft Sinuosity: 1.12 Discharge: 12 cfs Velocity: 4.48 fps Cross Sectional Area: 2.68 sq ft Entrenchment Ratio: 1.09 Width to Depth Ratio: 13.11 Rosgen Stream Classification: F 5b XS15Ground PointsBankfull IndicatorsWater Surface PointsElevation (ft)Horizontal Distance (ft)9159500250Wbkf = 5.9Dbkf = .45Abkf = 2.68 RIVERMORPH STREAM CHANNEL CLASSIFICATION ---------------------------------------------------------------------- River Name: Horne Creek Reach Name: Horne Creek <-- This is not a Reference Reach Drainage Area: 0.0642 sq mi State: North Carolina County: Surry Latitude: 36.2841 Longitude: 80.5036 Survey Date: 11/21/2017 ---------------------------------------------------------------------- Classification Data Valley Type: Type VIII(a) Valley Slope: 0.0325 ft/ft Number of Channels: Single Width: 4.4 ft Mean Depth: 0.69 ft Flood-Prone Width: 5.46 ft Channel Materials D50: 6.04 mm Water Surface Slope: 0.0301 ft/ft Sinuosity: 1.08 Discharge: 12 cfs Velocity: 3.93 fps Cross Sectional Area: 3.05 sq ft Entrenchment Ratio: 1.24 Width to Depth Ratio: 6.38 Rosgen Stream Classification: G 4 XS2Ground PointsBankfull IndicatorsWater Surface PointsElevation (ft)Horizontal Distance (ft)98010100160Wbkf = 4.4Dbkf = .69Abkf = 3.05 RIVERMORPH STREAM CHANNEL CLASSIFICATION ---------------------------------------------------------------------- River Name: Horne Creek Reach Name: Horne Creek <-- This is not a Reference Reach Drainage Area: 0.0457 sq mi State: North Carolina County: Surry Latitude: 36.2841 Longitude: 80.5036 Survey Date: 11/21/2017 ---------------------------------------------------------------------- Classification Data Valley Type: Type VIII(a) Valley Slope: 0.0496 ft/ft Number of Channels: Single Width: 3.61 ft Mean Depth: 0.62 ft Flood-Prone Width: 14.42 ft Channel Materials D50: 0.01 mm Water Surface Slope: 0.0463 ft/ft Sinuosity: 1.07 Discharge: 10 cfs Velocity: 4.46 fps Cross Sectional Area: 2.24 sq ft Entrenchment Ratio: 3.99 Width to Depth Ratio: 5.82 Rosgen Stream Classification: E 6b Slope is out of range XS4Ground PointsBankfull IndicatorsWater Surface PointsElevation (ft)Horizontal Distance (ft)9809950270Wbkf = 3.61Dbkf = .62Abkf = 2.24 RIVERMORPH STREAM CHANNEL CLASSIFICATION ---------------------------------------------------------------------- River Name: Horne Creek Reach Name: Horne Creek <-- This is not a Reference Reach Drainage Area: 0.13 sq mi State: North Carolina County: Surry Latitude: 36.2841 Longitude: 80.5036 Survey Date: 11/21/2017 ---------------------------------------------------------------------- Classification Data Valley Type: Type VIII(a) Valley Slope: 0.0381 ft/ft Number of Channels: Single Width: 6.66 ft Mean Depth: 0.74 ft Flood-Prone Width: 11.13 ft Channel Materials D50: 17.28 mm Water Surface Slope: 0.0296 ft/ft Sinuosity: 1.29 Discharge: 22 cfs Velocity: 4.44 fps Cross Sectional Area: 4.96 sq ft Entrenchment Ratio: 1.67 Width to Depth Ratio: 9 Rosgen Stream Classification: B 4 W/D is out of range XS6Ground PointsBankfull IndicatorsWater Surface PointsElevation (ft)Horizontal Distance (ft)9559750170Wbkf = 6.66Dbkf = .74Abkf = 4.96 RIVERMORPH STREAM CHANNEL CLASSIFICATION ---------------------------------------------------------------------- River Name: Horne Creek Reach Name: Horne Creek <-- This is not a Reference Reach Drainage Area: 0.045 sq mi State: North Carolina County: Surry Latitude: 36.2841 Longitude: 80.5036 Survey Date: 11/21/2017 ---------------------------------------------------------------------- Classification Data Valley Type: Type VIII(a) Valley Slope: 0.0233 ft/ft Number of Channels: Single Width: 4.92 ft Mean Depth: 0.46 ft Flood-Prone Width: 6.88 ft Channel Materials D50: 10 mm Water Surface Slope: 0.0205 ft/ft Sinuosity: 1.14 Discharge: 10 cfs Velocity: 4.39 fps Cross Sectional Area: 2.28 sq ft Entrenchment Ratio: 1.4 Width to Depth Ratio: 10.7 Rosgen Stream Classification: B 4 W/D is out of range XS17 R4aGround PointsBankfull IndicatorsWater Surface PointsElevation (ft)Horizontal Distance (ft)95095295495695896010001100Wbkf = 4.92Dbkf = .46Abkf = 2.28 RIVERMORPH STREAM CHANNEL CLASSIFICATION ---------------------------------------------------------------------- River Name: Horne Creek Reach Name: Horne Creek <-- This is not a Reference Reach Drainage Area: 0.0026 sq mi State: North Carolina County: Surry Latitude: 36.2841 Longitude: 80.5036 Survey Date: 11/21/2017 ---------------------------------------------------------------------- Classification Data Valley Type: Type VIII(a) Valley Slope: 0.0262 ft/ft Number of Channels: Single Width: 3.03 ft Mean Depth: 0.38 ft Flood-Prone Width: 3.84 ft Channel Materials D50: 2 mm Water Surface Slope: 0.0241 ft/ft Sinuosity: 1.09 Discharge: 4 cfs Velocity: 3.45 fps Cross Sectional Area: 1.16 sq ft Entrenchment Ratio: 1.27 Width to Depth Ratio: 7.97 Rosgen Stream Classification: G 5 XS18 R4bGround PointsBankfull IndicatorsWater Surface PointsElevation (ft)Horizontal Distance (ft)94596010001070Wbkf = 3.03Dbkf = .38Abkf = 1.16 RIVERMORPH STREAM CHANNEL CLASSIFICATION ---------------------------------------------------------------------- River Name: Horne Creek Reach Name: Horne Creek <-- This is not a Reference Reach Drainage Area: 0.26 sq mi State: North Carolina County: Surry Latitude: 36.2841 Longitude: 80.5036 Survey Date: 11/21/2017 ---------------------------------------------------------------------- Classification Data Valley Type: Type VIII(a) Valley Slope: 0.0243 ft/ft Number of Channels: Single Width: 7.84 ft Mean Depth: 1.08 ft Flood-Prone Width: 14.98 ft Channel Materials D50: 9.89 mm Water Surface Slope: 0.0187 ft/ft Sinuosity: 1.3 Discharge: 27 cfs Velocity: 3.18 fps Cross Sectional Area: 8.49 sq ft Entrenchment Ratio: 1.91 Width to Depth Ratio: 7.26 Rosgen Stream Classification: B 4c W/D is out of range XS7Ground PointsBankfull IndicatorsWater Surface PointsElevation (ft)Horizontal Distance (ft)9449700360Wbkf = 7.84Dbkf = 1.08Abkf = 8.49 RIVERMORPH STREAM CHANNEL CLASSIFICATION ---------------------------------------------------------------------- River Name: Horne Creek Reach Name: Horne Creek <-- This is not a Reference Reach Drainage Area: 0.26 sq mi State: North Carolina County: Surry Latitude: 36.2841 Longitude: 80.5036 Survey Date: 11/21/2017 ---------------------------------------------------------------------- Classification Data Valley Type: Type VIII(a) Valley Slope: 0.0243 ft/ft Number of Channels: Single Width: 8.54 ft Mean Depth: 0.81 ft Flood-Prone Width: 9.87 ft Channel Materials D50: 9.89 mm Water Surface Slope: 0.0187 ft/ft Sinuosity: 1.3 Discharge: 27 cfs Velocity: 3.92 fps Cross Sectional Area: 6.88 sq ft Entrenchment Ratio: 1.16 Width to Depth Ratio: 10.54 Rosgen Stream Classification: G 4c XS9Ground PointsBankfull IndicatorsWater Surface PointsElevation (ft)Horizontal Distance (ft)914.91935.000250Wbkf = 8.54Dbkf = .81Abkf = 6.88 RIVERMORPH STREAM CHANNEL CLASSIFICATION ---------------------------------------------------------------------- River Name: Horne Creek Reach Name: Horne Creek <-- This is a Reference Reach Drainage Area: 0.0518 sq mi State: North Carolina County: Surry Latitude: 36.2841 Longitude: 80.5036 Survey Date: 11/21/2017 ---------------------------------------------------------------------- Classification Data Valley Type: Type VIII(a) Valley Slope: 0.0317 ft/ft Number of Channels: Single Width: 12.25 ft Mean Depth: 0.18 ft Flood-Prone Width: 21.2 ft Channel Materials D50: 3 mm Water Surface Slope: 0.028 ft/ft Sinuosity: 1.13 Discharge: 12 cfs Velocity: 5.41 fps Cross Sectional Area: 2.22 sq ft Entrenchment Ratio: 1.73 Width to Depth Ratio: 68.06 Rosgen Stream Classification: B 4 Brown Farms Preservation ReachGround PointsBankfull IndicatorsWater Surface PointsElevation (ft)Horizontal Distance (ft)93.093.594.094.50 5 10 15 20 25Wbkf = 12.3Dbkf = .18Abkf = 2.22 RIVERMORPH STREAM CHANNEL CLASSIFICATION ---------------------------------------------------------------------- River Name: Horne Creek Reach Name: Horne Creek <-- This is not a Reference Reach Drainage Area: 0.0568 sq mi State: North Carolina County: Surry Latitude: 36.2841 Longitude: 80.5036 Survey Date: 11/21/2017 ---------------------------------------------------------------------- Classification Data Valley Type: Type VIII(a) Valley Slope: 0.0636 ft/ft Number of Channels: Single Width: 5.7 ft Mean Depth: 0.31 ft Flood-Prone Width: 21 ft Channel Materials D50: 5 mm Water Surface Slope: 0.058 ft/ft Sinuosity: 1.1 Discharge: 12 cfs Velocity: 6.86 fps Cross Sectional Area: 1.77 sq ft Entrenchment Ratio: 3.68 Width to Depth Ratio: 18.39 Rosgen Stream Classification: C 4b Slope is out of range Shoals Community Park RestorationGround PointsBankfull IndicatorsWater Surface PointsElevation (ft)Horizontal Distance (ft)95.095.596.096.597.00 5 10 15 20 25Wbkf = 5.7Dbkf = .31Abkf = 1.75 REACH 1CHWSBKFLBRBLEWREWElevation (ft)Distance along stream (ft)9059209359509650.0 387.5 775.0 1162.5 1550.0 REACH 2CHWSBKFLBRBLEWREWElevation (ft)Distance along stream (ft)98098599099510000.0 87.5 175.0 262.5 350.0 REACH 3CHWSBKFLBRBLEWREWElevation (ft)Distance along stream (ft)975.0981.3987.5993.81000.00 75 150 225 300 REACH 4CHWSBKFLBRBLEWREWElevation (ft)Distance along stream (ft)94095597098510000 300 600 900 1200 REACH 4ACHWSBKFLBRBLEWREWElevation (ft)Distance along stream (ft)9509529549569589600 50 100 150 200 250 REACH 4BCHWSBKFLBRBLEWREWElevation (ft)Distance along stream (ft)9409459509559600 50 100 150 200 REACH 5CHWSBKFLBRBLEWREWElevation (ft)Distance along stream (ft)9009109209309409509600 260 520 780 1040 1300 1560 1820 2080 2340 2600 XS20 n Uu 10000 Particle Size (mm) CD C Co N a XS20 0.125-0.25 0.50-1.0 4.0-5.7 8.0-11.3 16.0-22.6 32-45 64-90 128-180 Particle Size (mm) L C U L LL XS21 Particle Size (mm) XS21 0-0.062 0.125-0.25 1.0-2.0 4.0-5.7 5.7-8.0 8.0-11.3 16.0-22.6 22.6-32.0 32-45 45-64 64-90 90-128 128-180 Particle Size (mm) XS22 Particle Size (mm) XS22 30- - 0.50-1.0 1.0-2-0 4.0-5.7 8.0-11.3 11.3-16.0 16.0-22.6 22.6-32.0 32-45 45-64 64-90 90-128 Particle Size (mm) BANCS Method Calcs Appendix 2 Location: Horne Creek Mitigation Project - R1 Field Crew: J. Morgan/ K. VanStell Date: 5/9/2018 SEDIMENT LOADING ASSESSMENT SHEET LEFT BANK RIGHT BANK AB C D E F AB C D E F BEHI NBS STUDY BANK HEIGHT FEET/YR (from curve) DISTANCE (note station for detailed design needs) TOTAL FT³/yr =(C×D×E)STA BEHI NBS STUDY BANK HEIGHT FEET/YR (from curve) DISTANCE (note station for detailed design needs) TOTAL FT³/yr =(C×D×E)STA Low V. Low 5.5 0.02 13 1.4 1013 Low V. Low 5.8 0.02 13 1.5 1013 Low-Mod Low 4.5 0.055 20 5.0 1033 Low Mod 2.9 0.068 20 3.9 1033 Mod Low-Mod 4.3 0.135 10 5.8 1043 Low V. Low 2.1 0.02 33 1.4 1066 V. Low V. Low 1.7 0.008 23 0.3 1066 V. Low V. Low 1.7 0.008 70 1.0 1136 Low Low 2.1 0.034 40 2.9 1106 Mod Mod-High 2.1 0.27 5 2.8 1141 Low-Mod Low 2.1 0.055 15 0.0 1121 V. Low V. Low 1.6 0.008 50 0.6 1191 Low V. Low 1.9 0.02 15 0.6 1136 Mod Mod 1.9 0.18 9 3.1 1200 Low Low 1.9 0.034 13 0.8 1149 V. Low V. Low 2.1 0.008 34 0.6 1234 Low-Mod Mod 2.0 0.1 10 2.0 1159 Low V. Low 2.0 0.02 54 2.2 1288 Low V. Low 1.4 0.02 15 0.4 1174 Mod-High High 2.3 0.4 7 6.4 1295 Mod-High V. High 2.1 0.8 7 11.8 1181 Low Low 2.0 0.034 56 3.8 1351 Low-Mod V. Low 1.6 0.03 10 0.0 1191 Low V. Low 2.5 0.02 54 2.7 1405 Low Low-Mod 1.7 0.051 22 1.9 1213 High Mod 3.0 0.3 27 24.3 1432 Low V. Low 1.3 0.02 20 0.5 1233 V. Low V. Low 2.2 0.008 81 1.4 1513 High Mod-High 2.6 0.4 8 8.3 1241 High V. High 1.8 0.8 6 8.6 1519 Low V. Low 2.6 0.02 9 0.5 1250 V. Low V. Low 2.1 0.008 126 2.1 1645 V. Low V. Low 1.3 0.008 30 0.3 1280 Low V. Low 1.2 0.02 120 2.9 1765 Low V. Low 2.2 0.02 12 0.5 1292 High V. High 2.9 0.8 12 27.8 1777 V. Low V. Low 2.1 0.008 15 0.3 1307 Low Low 2.1 0.034 83 5.9 1860 Low V. Low 1.8 0.02 29 1.0 1336 Low V. Low 2.8 0.02 18 1.0 1878 Mod Mod-High 1.7 0.27 5 2.3 1341 Mod Low 2.6 0.09 27 6.3 1905 V. Low V. Low 1.1 0.008 36 0.3 1377 High V. High 2.5 0.8 15 30.0 1920 V. Low V. Low 1.4 0.008 29 0.3 1406 Low Low 1.9 0.034 31 2.0 1951 V. Low V. Low 1.8 0.008 13 0.2 1419 Low V. Low 2.1 0.02 40 1.7 1991 Mod High 2.2 0.38 13 10.9 1432 Low Mod 1.3 0.068 21 1.9 2012 Low V. Low 1.9 0.02 25 1.0 1457 Low V. Low 1.7 0.02 33 1.1 2045 Low V. Low 2.0 0.02 67 2.7 1524 V. Low V. Low 0.7 0.008 43 0.2 2088 Mod High 1.9 0.38 20 14.4 1544 High V. High 2.7 0.8 25 54.0 2113 V. Low V. Low 0.8 0.008 42 0.3 1586 Low V. Low 1.1 0.02 48 1.1 2161 Low V. Low 1.6 0.02 55 1.8 1641 Mod-High High 1.8 0.4 9 6.5 2170 V. Low V. Low 0.6 0.008 27 0.1 1668 V. Low V. Low 0.9 0.008 71 0.5 2241 Low V. Low 1.5 0.02 52 1.6 1720 Low Low 1.8 0.034 18 1.1 2259 Mod Mod-High 1.9 0.27 5 2.6 1725 Mod Low 2.5 0.09 48 10.8 2307 Low V. Low 1.7 0.02 104 3.5 1829 V. Low V. Low 0.7 0.008 22 0.1 2329 Mod-High High 1.4 0.4 7 3.9 1836 Low V. Low 1.7 0.02 15 0.5 2344 Low V. Low 1.6 0.02 50 1.6 1886 Low Low 0.9 0.034 22 0.7 2366 Mod-High High 3.4 0.4 11 15.0 1897 Low Low 0.6 0.034 8 0.2 2374 Mod Mod-High 2.3 0.27 49 30.4 1946 Low V. Low 2.5 0.02 13 0.7 2387 Mod V. Low 1.5 0.035 147 7.7 2093 V. Low V. Low 0.9 0.008 10 0.1 V. Low V. Low 0.7 0.008 201 1.1 2294 Mod-High High 3.6 0.4 15 21.6 2309 V. Low Low 0.6 0.02 88 1.1 2397 TOTAL FT³/YR 168.6 TOTAL FT³/YR 223.5 Divide FT³/yr by 27 TOTAL YD³/YR 6.2 TOTAL YD³/YR 8.3 Multiply YD³/yr by 1.3 TOTAL TONS/YR 8.1 TOTAL TONS/YR 10.8 Total Length 1397 1397 North Carolina unpublished curve (Alan Walker, NRCS)Total ft assessed 2794 V. Low Low Low-Mod Mod Mod-High High V. High Extreme BEHI Total TONS per year 18.9 V. Low 0.008 0.02 0.03 0.035 0.07 0.1 0.2 0.8 Tons per ft per year 0.0068 Low 0.02 0.034 0.055 0.09 0.15 0.18 0.18 0.44 Tons per 1000ft 6.8 Low-Mod 0.03 0.051 0.078 0.135 0.2 0.24 0.24 0.77 Mod 0.035 0.068 0.1 0.18 0.25 0.3 0.3 1.1 Mod-High 0.07 0.1 0.15 0.27 0.3 0.4 0.4 1.8 High 0.1 0.14 0.25 0.38 0.4 0.5 0.5 2.7 V. High 0.2 0.28 0.4 0.78 0.8 0.8 0.8 6 Extreme 0.8 0.52 0.6 1.6 1.5 1.5 1.5 10 NBS BANCS Method Calcs Appendix 2 Location: Horne Creek Mitigation Project - R2 Field Crew: C. Tomsic, J. Bell Date: 5/9/2018 SEDIMENT LOADING ASSESSMENT SHEET LEFT BANK RIGHT BANK AB C D E F AB C D E F BEHI NBS STUDY BANK HEIGHT FEET/YR (from curve) DISTANCE (note station for detailed design needs) TOTAL FT³/yr =(C×D×E)STA BEHI NBS STUDY BANK HEIGHT FEET/YR (from curve) DISTANCE (note station for detailed design needs) TOTAL FT³/yr =(C×D×E)STA Mod V. Low 8.0 0.035 40 11.2 1040 Mod V. Low 8.0 0.035 40 11.2 1040 Mod V. Low 12.0 0.035 47 19.7 1087 Mod V. Low 12.0 0.035 65 27.3 1105 Low V. Low 2.0 0.02 50 2.0 1137 Mod-High Mod 12.0 0.25 23 69.0 1128 Mod V. Low 12.0 0.035 32 13.4 1169 Mod V. Low 12.0 0.035 9 3.8 1137 1169 Mod V. Low 12.0 0.035 45 18.9 1182 1169 1182 1169 1182 1169 1182 1169 1182 1169 1182 1169 1182 1169 1182 1169 1182 1169 1182 1169 1182 1169 1182 1169 1182 1169 1182 1169 1182 1169 1182 1169 1182 1169 1182 1169 1182 1169 1182 1169 1182 1169 1182 1169 1182 1169 1182 1169 1182 1169 1182 1169 1182 1169 1182 1169 1182 1169 1182 1169 1182 1169 1182 1169 1182 1169 1182 1169 1169 1169 1169 TOTAL FT³/YR 46.4 TOTAL FT³/YR 130.2 Divide FT³/yr by 27 TOTAL YD³/YR 1.7 TOTAL YD³/YR 4.8 Multiply YD³/yr by 1.3 TOTAL TONS/YR 2.2 TOTAL TONS/YR 6.3 Total Length 169 182 North Carolina unpublished curve (Alan Walker, NRCS)Total ft assessed 351 V. Low Low Low-Mod Mod Mod-High High V. High Extreme BEHI Total TONS per year 8.5 V. Low 0.008 0.02 0.03 0.035 0.07 0.1 0.2 0.8 Tons per ft per year 0.0242 Low 0.02 0.034 0.055 0.09 0.15 0.18 0.18 0.44 Tons per 1000ft 24.2 Low-Mod 0.03 0.051 0.078 0.135 0.2 0.24 0.24 0.77 Mod 0.035 0.068 0.1 0.18 0.25 0.3 0.3 1.1 Mod-High 0.07 0.1 0.15 0.27 0.3 0.4 0.4 1.8 High 0.1 0.14 0.25 0.38 0.4 0.5 0.5 2.7 V. High 0.2 0.28 0.4 0.78 0.8 0.8 0.8 6 Extreme 0.8 0.52 0.6 1.6 1.5 1.5 1.5 10 BANCS Method Calcs Appendix 2 Location: Horne Creek Mitigation Project - R2 Field Crew: C. Tomsic, J. Bell Date: 5/11/2018 SEDIMENT LOADING ASSESSMENT SHEET LEFT BANK RIGHT BANK AB C D E F AB C D E F BEHI NBS STUDY BANK HEIGHT FEET/YR (from curve) DISTANCE (note station for detailed design needs) TOTAL FT³/yr =(C×D×E)STA BEHI NBS STUDY BANK HEIGHT FEET/YR (from curve) DISTANCE (note station for detailed design needs) TOTAL FT³/yr =(C×D×E)STA Mod Low 1.0 0.09 20 1.8 1020 Mod Low 1.0 0.09 20 1.8 1020 Low Low 0.5 0.034 30 0.5 1050 V. High Mod 3.0 0.3 30 27.0 1050 Mod Low 6.0 0.09 35 18.9 1085 Mod Low 6.0 0.09 54 29.2 1104 Mod Low 3.0 0.09 109 29.4 1194 V. High High 7.0 0.5 40 140.0 1144 1194 1144 1194 1144 1194 1144 1194 1144 1194 1144 1194 1144 1194 1144 1194 1144 1194 1144 1194 1144 1194 1144 1194 1144 1194 1144 1194 1144 1194 1144 1194 1144 1194 1144 1194 1144 1194 1144 1194 1144 1194 1144 1194 1144 1194 1144 1194 1144 1194 1144 1194 1144 1194 1144 1194 1144 1194 1144 1194 1144 1194 1144 1194 1144 1194 1144 1194 1144 1194 1194 1194 1194 TOTAL FT³/YR 50.6 TOTAL FT³/YR 198.0 Divide FT³/yr by 27 TOTAL YD³/YR 1.9 TOTAL YD³/YR 7.3 Multiply YD³/yr by 1.3 TOTAL TONS/YR 2.4 TOTAL TONS/YR 9.5 Total Length 194 144 North Carolina unpublished curve (Alan Walker, NRCS)Total ft assessed 338 V. Low Low Low-Mod Mod Mod-High High V. High Extreme BEHI Total TONS per year 12.0 V. Low 0.008 0.02 0.03 0.035 0.07 0.1 0.2 0.8 Tons per ft per year 0.0354 Low 0.02 0.034 0.055 0.09 0.15 0.18 0.18 0.44 Tons per 1000ft 35.4 Low-Mod 0.03 0.051 0.078 0.135 0.2 0.24 0.24 0.77 Mod 0.035 0.068 0.1 0.18 0.25 0.3 0.3 1.1 Mod-High 0.07 0.1 0.15 0.27 0.3 0.4 0.4 1.8 High 0.1 0.14 0.25 0.38 0.4 0.5 0.5 2.7 V. High 0.2 0.28 0.4 0.78 0.8 0.8 0.8 6 Extreme 0.8 0.52 0.6 1.6 1.5 1.5 1.5 10 BANCS Method Calcs Appendix 2 Location: Horne Creek Mitigation Project - R2 Field Crew: C. Tomsic, J. Bell Date: 5/9/2018 SEDIMENT LOADING ASSESSMENT SHEET LEFT BANK RIGHT BANK AB C D E F ABC D E F BEHI NBS STUDY BANK HEIGHT FEET/YR (from curve) DISTANCE (note station for detailed design needs) TOTAL FT³/yr =(C×D×E)STA BEHI NBS STUDY BANK HEIGHT FEET/YR (from curve) DISTANCE (note station for detailed design needs) TOTAL FT³/yr =(C×D×E)STA V. High Mod 12.0 0.3 182 655.2 1182 Mod V. Low 7.0 0.035 240 58.8 1240 Mod V. Low 7.0 0.035 49 12.0 1231 High Mod-High 8.0 0.4 18 57.6 1258 Mod V. Low 4.0 0.035 27 3.8 1258 Mod V. Low 6.0 0.035 20 4.2 1278 V. Low V. Low 3.0 0.008 37 0.9 1295 V. Low V. Low 2.0 0.008 40 0.6 1318 Mod Mod 4.0 0.18 39 28.1 1334 High Mod 4.0 0.3 16 19.2 1334 Mod Low 3.0 0.09 60 16.2 1394 Mod Low 3.0 0.09 60 16.2 1394 Low V. Low 3.0 0.02 30 1.8 1424 Mod Low 5.0 0.09 49 22.1 1443 V. Low V. Low 5.0 0.008 19 0.8 1443 Mod Low 6.0 0.09 47 25.4 1490 Mod Low 6.0 0.09 136 73.4 1579 Mod Low 12.0 0.09 30 32.4 1520 Mod Mod 6.0 0.18 15 16.2 1594 High High 12.0 0.5 33 198.0 1553 Mod Low 6.0 0.09 234 126.4 1828 Mod Low 3.0 0.09 64 17.3 1617 Mod Low 4.0 0.09 45 16.2 1873 Mod Low 6.0 0.09 56 30.2 1673 Mod Low 4.0 0.09 32 11.5 1905 Mod Low 8.0 0.09 85 61.2 1758 Mod High 4.0 0.38 26 39.5 1931 High High 10.0 0.5 23 115.0 1781 V. Low V. Low 0.0 0.008 39 0.0 1970 Mod Low 6.0 0.09 75 40.5 1856 Mod Low 3.0 0.09 141 38.1 2111 High Mod 4.0 0.3 17 20.4 1873 Low Low 3.0 0.034 24 2.4 2135 Mod Low 4.0 0.09 32 11.5 1905 Low Low 2.0 0.034 28 1.9 2163 V. Low V. Low 0.0 0.008 26 0.0 1931 High High 5.0 0.5 14 35.0 2177 Extreme Extreme 3.0 10 39 1170.0 1970 Low Low 4.0 0.034 46 6.3 2223 Mod Low 3.0 0.09 141 38.1 2111 V. Low V. Low 0.0 0.008 28 0.0 2251 Low Low 3.0 0.034 11 1.1 2122 Extreme Extreme 6.0 10 30 1800.0 2281 Mod High 4.0 0.38 13 19.8 2135 Low V. Low 3.0 0.02 26 1.6 2307 Low Low 3.0 0.034 28 2.9 2163 Mod V. Low 5.0 0.035 26 4.6 2333 Low Low 2.0 0.034 29 2.0 2192 Low V. Low 2.0 0.02 30 1.2 2363 Mod Low 4.0 0.09 31 11.2 2223 High High 6.0 0.5 44 132.0 2407 High Extreme 5.0 1.5 28 210.0 2251 V. Low V. Low 0.0 0.008 36 0.0 2443 V. Low V. Low 0.0 0.008 30 0.0 2281 Mod Low 6.0 0.09 19 10.3 2462 Mod Mod 5.0 0.18 26 23.4 2307 Extreme V. High 6.0 6 14 504.0 2476 Low V. Low 3.0 0.02 100 6.0 2407 Low Low 6.0 0.034 21 4.3 2497 High V. High 4.0 0.8 36 115.2 2443 Extreme Mod 5.0 1.1 20 110.0 2517 Low Low 3.0 0.034 17 1.7 2460 Low Low 2.0 0.034 52 3.5 2569 Low Low 3.0 0.034 57 5.8 2517 Mod Mod 5.0 0.18 45 40.5 2268 Mod High 7.0 0.38 52 138.3 2163 Extreme V. High 5.0 6 17 510.0 2285 Mod-High Low 3.0 0.15 45 20.3 2208 Low V. Low 3.0 0.02 22 1.3 2307 V. Low V. Low 0.0 0.008 17 0.0 2225 Mod Low 6.0 0.09 20 10.8 2327 High High 6.0 0.5 22 66.0 2247 V. Low V. Low 2.0 0.008 13 0.2 2340 Mod Low 6.0 0.09 20 10.8 2267 High Mod 1.5 0.3 29 13.1 2369 Mod Low 4.0 0.09 58 20.9 2325 Low Low 2.0 0.034 44 3.0 2413 High High 5.0 0.5 28 70.0 2353 Mod Low 6.0 0.09 38 20.5 2451 Mod Low 4.0 0.09 38 13.7 2391 V. High High 6.0 0.5 50 150.0 2419 Low Low 3.0 0.034 50 5.1 V. Low V. Low 0.0 0.008 25 0.0 2444 V. High High 6.0 0.5 25 75.0 Mod Low 6.0 0.09 69 37.3 2520 Mod Low 3.0 0.09 69 18.6 High Mod 5.0 0.3 23 34.5 2543 Low V. Low 1.5 0.02 23 0.7 Low V. Low 2.0 0.02 31 1.2 2254 High High 5.0 0.5 31 77.5 2142 Mod Low 4.0 0.09 85 30.6 2339 Mod Low 4.0 0.09 85 30.6 2227 V. Low V. Low 0.0 0.008 20 0.0 2359 Extreme Mod 4.0 1.1 20 88.0 2247 Mod Extreme 5.0 1.6 42 336.0 2401 Mod Low 5.0 0.09 40 18.0 2287 Low Low 3.0 0.034 8 0.8 2409 V. High High 5.0 0.5 20 50.0 2307 V. Low V. Low 2.0 0.008 10 0.2 2419 Low Low 3.0 0.034 42 4.3 2349 High High 5.0 0.5 42 105.0 2461 Mod Low 3.0 0.09 66 17.8 2415 Mod Low 4.0 0.09 66 23.8 2527 Extreme V. High 6.0 6 67 2412.0 2482 Mod Low 3.0 0.09 67 18.1 2486 Mod V. Low 2.0 0.035 30 2.1 Mod V. High 6.0 0.78 30 140.4 2516 Mod Low 4.0 0.09 24 8.6 V. Low V. Low 0.0 0.008 24 0.0 2551 V. Low V. Low 0.0 0.008 45 0.0 Extreme V. High 3.0 6 45 810.0 2596 Low High 2.0 0.14 58 16.2 V. Low V. Low 1.0 0.008 32 0.3 2601 Mod Low 7.0 0.09 55 34.7 2572 Extreme V. High 3.0 6 26 468.0 2627 Extreme V. High 8.0 6 38 1824.0 2610 Mod Low 4.0 0.09 5 1.8 2632 V. Low V. Low 0.0 0.008 41 0.0 2651 V. Low V. Low 2.0 0.008 88 1.4 2720 High Low 5.0 0.18 17 15.3 2668 High V. High 6.0 0.8 41 196.8 2761 Mod Low 5.0 0.09 37 16.7 2705 Mod Low 4.0 0.09 54 19.4 2570 Mod Low 3.0 0.09 33 8.9 33 Mod Low 3.0 0.09 162 43.7 2732 Mod Low 2.0 0.09 95 17.1 128 Mod Low 2.0 0.09 47 8.5 2779 Mod Low 3.0 0.09 34 9.2 162 High Mod 3.0 0.3 21 18.9 2591 Mod Low 2.0 0.09 47 8.5 Mod Low 2.0 0.09 149 26.8 2740 Low Low 1.0 0.034 21 0.7 Mod Low 3.0 0.09 74 20.0 2853 Mod Low 2.0 0.09 223 40.1 Mod Low 2.0 0.09 100 18.0 2953 Mod Low 2.0 0.09 100 18.0 Extreme Mod 3.0 1.1 15 49.5 2776 V. Low V. Low 1.0 0.008 15 0.1 2720 Mod Low 3.0 0.09 150 40.5 2926 Mod Low 3.0 0.09 150 40.5 2870 2926 2870 2776 2776 2926 2926 TOTAL FT³/YR 6857.8 TOTAL FT³/YR 7536.0 Divide FT³/yr by 27 TOTAL YD³/YR 254.0 TOTAL YD³/YR 279.1 Multiply YD³/yr by 1.3 TOTAL TONS/YR 330.2 TOTAL TONS/YR 362.8 Total Length 3398 3398 North Carolina unpublished curve (Alan Walker, NRCS)Total ft assessed 6796 V. Low Low Low-Mod Mod Mod-High High V. High Extreme BEHI Total TONS per year 693.0 V. Low 0.008 0.02 0.03 0.035 0.07 0.1 0.2 0.8 Tons per ft per year 0.1020 Low 0.02 0.034 0.055 0.09 0.15 0.18 0.18 0.44 Tons per 1000ft 102.0 Low-Mod 0.03 0.051 0.078 0.135 0.2 0.24 0.24 0.77 Mod 0.035 0.068 0.1 0.18 0.25 0.3 0.3 1.1 Mod-High 0.07 0.1 0.15 0.27 0.3 0.4 0.4 1.8 High 0.1 0.14 0.25 0.38 0.4 0.5 0.5 2.7 V. High 0.2 0.28 0.4 0.78 0.8 0.8 0.8 6 Extreme 0.8 0.52 0.6 1.6 1.5 1.5 1.5 10 NBS Watershed Information and Site Runoff VolumeAppendix 2Catchment Area 7.67 BMP R1Pervious Area7.59Impervious Area 0.08The Simple MethodRV = 0.05 + 0.9 * IAStep 1 Simple MethodRV = 0.05963 Runoff coefficient (unitless)IA = 0.0107 Impervious fraction [impervious portion of drainage area (ac)/drainage area (ac)], (unitlessV = 3630 * RD * RV * A Step 2 in the Simple MethodV1660 Volume of runoff that must be controlled for the design storm (cubic feet)V0.46 Volume of runoff that must be controlled for the design storm (acre‐in)RD1.0 Design storm rainfall depth (in) (Typically 1.0" or 1.5")A7.67 Watershed area (ac)***CN Method in this spreadsheet is for 2 CN areas only. The equations may be modified if using multiple CNs or use a composite pervious CNSCS Curve Number MethodQ* = (P ‐ 0.2S)^2 / (P + 0.8S)S = 1000/CN - 10Q* = 0.053 Runoff depth (in)CN (Composite)78 Related to hydrologic soil group and ground cover. (Refer to DWQ Design Manual for CN Tables)P = 1.0 Rainfall depth (in) (Typically 1.0" or 1.5")S = 2.90 Potential maximum retention after rainfall begins (in)Soil Type Colvard and Suches, Fairviewhttp://websoilsurvey.nrcs.usda.gov/app/Hydrologic Soil Group SCS (1986) A, B, C, and D Refer to DWQ Design Manual after the soil series in the area of interest is identifiedBMP Sizing ReqsV = A(Q*)0.41 SCS Method Volume of Runoff (ac‐in) Required Storage VolumeV1483 SCS Method Volume of Runoff (cubic feet) Required Storage VolumeV11094 SCS Method Volume of Runoff (gallons) Required Storage VolumeV0.46 Simple Method Volume of Runoff (ac‐in) Required Storage VolumeV1660 Simple Method Volume of Runoff (cubic feet) Required Storage VolumeRequired Ponding Depth 10 Depends on desired vegetation type and inundation time. Usually 6‐12" (inRequired BMP Surface Area 0.041 (ac) SCS MethodRequired BMP Surface Area 1780 (ft^2) SCS MethodRequired BMP Surface Area 0.046 (ac) Simple MethodRequired BMP Surface Area 1992 (ft^2) Simple MethodActual BMP Surface Area 0.033 (ac) Measured in Cadd, GIS or by hand.Actual BMP Surface Area 1436 (ft^2)Actual BMP Surface Volume 1986.5 (ft^3)**Per DWQ BMP design manual, the BMP must be designed to treat a volume at least as large as the volume calculated using the simple method****DWQ recommends 9" but requires ponding depth to be less then 12"** Watershed Information and Site Runoff VolumeAppendix 2Catchment Area 29.24 BMP R2Pervious Area29.08Impervious Area 0.16The Simple MethodRV = 0.05 + 0.9 * IAStep 1 Simple MethodRV = 0.05486 Runoff coefficient (unitless)IA = 0.0054 Impervious fraction [impervious portion of drainage area (ac)/drainage area (ac)], (unitlessV = 3630 * RD * RV * A Step 2 in the Simple MethodV5823 Volume of runoff that must be controlled for the design storm (cubic feet)V1.60 Volume of runoff that must be controlled for the design storm (acre‐in)RD1.0 Design storm rainfall depth (in) (Typically 1.0" or 1.5")A29.24 Watershed area (ac)***CN Method in this spreadsheet is for 2 CN areas only. The equations may be modified if using multiple CNs or use a composite pervious CNSCS Curve Number MethodQ* = (P ‐ 0.2S)^2 / (P + 0.8S)S = 1000/CN - 10Q* = 0.005 Runoff depth (in)CN (Composite)70 Related to hydrologic soil group and ground cover. (Refer to DWQ Design Manual for CN Tables)P = 1.0 Rainfall depth (in) (Typically 1.0" or 1.5")S = 4.29 Potential maximum retention after rainfall begins (in)Soil Type Colvard and Suches, Fairviewhttp://websoilsurvey.nrcs.usda.gov/app/Hydrologic Soil Group SCS (1986) A, B, C, and D Refer to DWQ Design Manual after the soil series in the area of interest is identifiedBMP Sizing ReqsV = A(Q*)0.13 SCS Method Volume of Runoff (ac‐in) Required Storage VolumeV489 SCS Method Volume of Runoff (cubic feet) Required Storage VolumeV3659 SCS Method Volume of Runoff (gallons) Required Storage VolumeV1.60 Simple Method Volume of Runoff (ac‐in) Required Storage VolumeV5823 Simple Method Volume of Runoff (cubic feet) Required Storage VolumeRequired Ponding Depth 10 Depends on desired vegetation type and inundation time. Usually 6‐12" (inRequired BMP Surface Area 0.013 (ac) SCS MethodRequired BMP Surface Area 587 (ft^2) SCS MethodRequired BMP Surface Area 0.160 (ac) Simple MethodRequired BMP Surface Area 6987 (ft^2) Simple MethodActual BMP Surface Area 0.024 (ac) Measured in Cadd, GIS or by hand.Actual BMP Surface Area 1025 (ft^2)Actual BMP Surface Volume 1178 (ft^3)**Per DWQ BMP design manual, the BMP must be designed to treat a volume at least as large as the volume calculated using the simple method****DWQ recommends 9" but requires ponding depth to be less then 12"** Watershed Information and Site Runoff VolumeAppendix 2Catchment Area 29.24 BMP R3Pervious Area29.07Impervious Area 0.17The Simple MethodRV = 0.05 + 0.9 * IAStep 1 Simple MethodRV = 0.05522 Runoff coefficient (unitless)IA = 0.0058 Impervious fraction [impervious portion of drainage area (ac)/drainage area (ac)], (unitlessV = 3630 * RD * RV * A Step 2 in the Simple MethodV5861 Volume of runoff that must be controlled for the design storm (cubic feet)V1.61 Volume of runoff that must be controlled for the design storm (acre‐in)RD1.0 Design storm rainfall depth (in) (Typically 1.0" or 1.5")A29.24 Watershed area (ac)***CN Method in this spreadsheet is for 2 CN areas only. The equations may be modified if using multiple CNs or use a composite pervious CNSCS Curve Number MethodQ* = (P ‐ 0.2S)^2 / (P + 0.8S)S = 1000/CN - 10Q* = 0.005 Runoff depth (in)CN (Composite)70 Related to hydrologic soil group and ground cover. (Refer to DWQ Design Manual for CN Tables)P = 1.0 Rainfall depth (in) (Typically 1.0" or 1.5")S = 4.29 Potential maximum retention after rainfall begins (in)Soil Type Colvard and Suches, Fairviewhttp://websoilsurvey.nrcs.usda.gov/app/Hydrologic Soil Group SCS (1986) A, B, C, and D Refer to DWQ Design Manual after the soil series in the area of interest is identifiedBMP Sizing ReqsV = A(Q*)0.13 SCS Method Volume of Runoff (ac‐in) Required Storage VolumeV489 SCS Method Volume of Runoff (cubic feet) Required Storage VolumeV3659 SCS Method Volume of Runoff (gallons) Required Storage VolumeV1.61 Simple Method Volume of Runoff (ac‐in) Required Storage VolumeV5861 Simple Method Volume of Runoff (cubic feet) Required Storage VolumeRequired Ponding Depth 10 Depends on desired vegetation type and inundation time. Usually 6‐12" (inRequired BMP Surface Area 0.013 (ac) SCS MethodRequired BMP Surface Area 587 (ft^2) SCS MethodRequired BMP Surface Area 0.161 (ac) Simple MethodRequired BMP Surface Area 7033 (ft^2) Simple MethodActual BMP Surface Area 0.047 (ac) Measured in Cadd, GIS or by hand.Actual BMP Surface Area 2050 (ft^2)Actual BMP Surface Volume 2356 (ft^3)**Per DWQ BMP design manual, the BMP must be designed to treat a volume at least as large as the volume calculated using the simple method****DWQ recommends 9" but requires ponding depth to be less then 12"** y = 89.039x0.7223R² = 0.90691.0010.00100.001000.0010000.000.01 0.10 1.00 10.00 100.00 1000.00DISCHARGE (CFS)DRAINAGE AREA (SQUARE MILES)NC Rural Piedmont Regional Curve: Bankfull DischargePublished Rural Peidmont, Harman 99Horne CreekPower (Published Rural Peidmont, Harman 99) y = 21.433x0.6761R² = 0.94910.101.0010.00100.001000.000.01 0.1 1 10 100 1000CROSS SECTIONAL AREA (SQFT)DRAINAGE AREA (SQUARE MILES)NC Rural Piedmont Regional Curve: Bankfull Cross Sectional AreaHorne CreekPublished Rural Piedmont, Harman 99Power (Published Rural Piedmont, Harman 99) y = 13.686x0.3766R² = 0.91921.0010.00100.001000.000.01 0.1 1 10 100 1000WIDTH (FT)DRAINAGE AREA (SQUARE MILES)NC Rural Piedmont Regional Curve: Bankfull WidthHorne CreekPublished Rural Piedmont, Harman 99Power (Published Rural Piedmont, Harman 99) y = 1.5555x0.3009R² = 0.87050.101.0010.000.01 0.1 1 10 100 1000DEPTH (FT)DRAINAGE AREA (SQUARE MILES)NC Rural Piedmont Regional Curve: Bankfull DepthHorne CreekPublished Rural Piedmont, Harman 99Power (Published Rural Piedmont, Harman 99) Horne Creek R1Appendix 2Site Description: Horne Creek Reach R1Drainage Area = 0.0586mi2Retun Interval Discharge Notes1 13.32 extrapolated1.2 15.86 extrapolated1.5 18.97 extrapolated2 22.54 USGS regional regression, 2011 (small streams, HR1, ≤3 sq. mi.)5 36.13 USGS regional regression, 2011 (small streams, HR1, ≤3 sq. mi.)10 45.77 USGS regional regression, 2011 (small streams, HR1, ≤3 sq. mi.)25 58.19 USGS regional regression, 2011 (small streams, HR1, ≤3 sq. mi.)50 67.76 USGS regional regression, 2011 (small streams, HR1, ≤3 sq. mi.)100 77.45 USGS regional regression, 2011 (small streams, HR1, ≤3 sq. mi.)y = 13.948ln(x) + 13.3181.0010.00100.001 10 100Discharge (cfs)Return Interval (years)USGS Discharge versus Return Interval Horne Creek R2Appendix 2Site Description: Horne Creek Reach R2Drainage Area = 0.0642mi2Retun Interval Discharge Notes1 14.02 extrapolated1.2 16.77 extrapolated1.5 20.13 extrapolated2 24.05 USGS regional regression, 2011 (small streams, HR1, ≤3 sq. mi.)5 38.64 USGS regional regression, 2011 (small streams, HR1, ≤3 sq. mi.)10 49.02 USGS regional regression, 2011 (small streams, HR1, ≤3 sq. mi.)25 62.46 USGS regional regression, 2011 (small streams, HR1, ≤3 sq. mi.)50 72.82 USGS regional regression, 2011 (small streams, HR1, ≤3 sq. mi.)100 83.34 USGS regional regression, 2011 (small streams, HR1, ≤3 sq. mi.)y = 15.066ln(x) + 14.0241.0010.00100.001 10 100Discharge (cfs)Return Interval (years)USGS Discharge versus Return Interval Horne Creek R3Appendix 2Site Description: Horne Creek Reach R3Drainage Area = 0.0457mi2Retun Interval Discharge Notes1 11.55 extrapolated1.2 13.61 extrapolated1.5 16.13 extrapolated2 18.90 USGS regional regression, 2011 (small streams, HR1, ≤3 sq. mi.)5 30.10 USGS regional regression, 2011 (small streams, HR1, ≤3 sq. mi.)10 37.95 USGS regional regression, 2011 (small streams, HR1, ≤3 sq. mi.)25 47.99 USGS regional regression, 2011 (small streams, HR1, ≤3 sq. mi.)50 55.67 USGS regional regression, 2011 (small streams, HR1, ≤3 sq. mi.)100 63.42 USGS regional regression, 2011 (small streams, HR1, ≤3 sq. mi.)y = 11.303ln(x) + 11.5521.0010.00100.001 10 100Discharge (cfs)Return Interval (years)USGS Discharge versus Return Interval Horne Creek R4Appendix 2Site Description: Horne Creek Reach R4Drainage Area = 0.13mi2Retun Interval Discharge Notes1 20.66 extrapolated1.2 25.64 extrapolated1.5 31.73 extrapolated2 39.65 USGS regional regression, 2011 (small streams, HR1, ≤3 sq. mi.)5 64.90 USGS regional regression, 2011 (small streams, HR1, ≤3 sq. mi.)10 83.43 USGS regional regression, 2011 (small streams, HR1, ≤3 sq. mi.)25 107.93 USGS regional regression, 2011 (small streams, HR1, ≤3 sq. mi.)50 127.18 USGS regional regression, 2011 (small streams, HR1, ≤3 sq. mi.)100 146.94 USGS regional regression, 2011 (small streams, HR1, ≤3 sq. mi.)y = 27.298ln(x) + 20.6581.0010.00100.001000.001 10 100Discharge (cfs)Return Interval (years)USGS Discharge versus Return Interval Horne Creek R4aAppendix 2Site Description: Horne Creek Reach R4aDrainage Area = 0.045mi2Retun Interval Discharge Notes1 11.45 extrapolated1.2 13.48 extrapolated1.5 15.97 extrapolated2 18.69 USGS regional regression, 2011 (small streams, HR1, ≤3 sq. mi.)5 29.76 USGS regional regression, 2011 (small streams, HR1, ≤3 sq. mi.)10 37.51 USGS regional regression, 2011 (small streams, HR1, ≤3 sq. mi.)25 47.42 USGS regional regression, 2011 (small streams, HR1, ≤3 sq. mi.)50 54.99 USGS regional regression, 2011 (small streams, HR1, ≤3 sq. mi.)100 62.63 USGS regional regression, 2011 (small streams, HR1, ≤3 sq. mi.)y = 11.156ln(x) + 11.451.0010.00100.001 10 100Discharge (cfs)Return Interval (years)USGS Discharge versus Return Interval Horne Creek R4bAppendix 2Site Description: Horne Creek Reach R4bDrainage Area = 0.0026mi2Retun Interval Discharge Notes1 2.00 extrapolated1.2 2.17 extrapolated1.5 2.39 extrapolated2 2.48 USGS regional regression, 2011 (small streams, HR1, ≤3 sq. mi.)5 3.66 USGS regional regression, 2011 (small streams, HR1, ≤3 sq. mi.)10 4.38 USGS regional regression, 2011 (small streams, HR1, ≤3 sq. mi.)25 5.20 USGS regional regression, 2011 (small streams, HR1, ≤3 sq. mi.)50 5.78 USGS regional regression, 2011 (small streams, HR1, ≤3 sq. mi.)100 6.33 USGS regional regression, 2011 (small streams, HR1, ≤3 sq. mi.)y = 0.9693ln(x) + 1.99691.0010.001 10 100Discharge (cfs)Return Interval (years)USGS Discharge versus Return Interval Horne Creek R5Appendix 2Site Description: Horne Creek Reach R5Drainage Area = 0.26mi2Retun Interval Discharge Notes1 29.46 extrapolated1.2 38.36 extrapolated1.5 49.26 extrapolated2 64.82 USGS regional regression, 2011 (small streams, HR1, ≤3 sq. mi.)5 108.03 USGS regional regression, 2011 (small streams, HR1, ≤3 sq. mi.)10 140.66 USGS regional regression, 2011 (small streams, HR1, ≤3 sq. mi.)25 184.71 USGS regional regression, 2011 (small streams, HR1, ≤3 sq. mi.)50 219.95 USGS regional regression, 2011 (small streams, HR1, ≤3 sq. mi.)100 256.52 USGS regional regression, 2011 (small streams, HR1, ≤3 sq. mi.)y = 48.83ln(x) + 29.4571.0010.00100.001000.001 10 100Discharge (cfs)Return Interval (years)USGS Discharge versus Return Interval Horne CrTribs-R1 Rater(s): KMV Date: 5/9/18 F Level 5 - Biology Poor Fair Good 1 Concentrated Flow (Hydrology) Potential for concentrated flow/impairments immediately upstream of the project and no treatments are in place Some potential for concentrated flow/impairments to reach restoration site, however, measures are in place to protect resources No potential for concentrated flow/impairments from adjacent land use G 2 Impervious cover (Hydrology)Greater than 25% Between 10% and 25%Less than 10% G 3 Land Use Change (Hydrology)Rapidly urbanizing/urban Single family homes/suburban Rural communities/slow growth or primarily forested G 4 Distance to Roads (Hydrology) Roads located in or adjacent to project reach and/or major roads proposed in 10 year DOT plans No roads in or adjacent to project reach. No more than one major road proposed in 10 year DOT plans. No roads in or adjacent to project reach. No proposed roads in 10 year DOT plans.G 5 Percent Forested (Hydrology)<= 20%>20% and <70%>=70%P 6 Riparian Vegetation (Geomorphology)<50% of contributing stream length has > 25 ft corridor width 50-80% of contributing stream length has > 25 ft corridor width >80% of contributing stream length has > 25 ft corridor width P 7 Sediment Supply (Geomorphology)High sediment supply from upstream bank erosion and surface runoff Moderate sediment supply from upstream bank erosion and surface runoff Low sediment supply. Upstream bank erosion and surface runoff is minimal G 8 Located on or downstream of a 303(d) listed stream TMDL list (Physicochemical) On, upstream, or downstream of 303(d) and no TMDL/WS Mgmt plan to address deficiencies On, upstream, or downstream of 303(d) and TMDL/WS Mgmt plan addressing deficiencies Not on 303(d) list G 9 Agricultural Land Use (Physicochemical)Livestock access to stream and/or intensive cropland immediately upstream of project reach. Livestock access to stream and/or intensive cropland upstream of project reach. A sufficient reach of stream is between Ag. land use and project reach. There is little to no agricultural land uses or the livestock or cropland is far enough away from project reach to cause no impact to water quality or biology. P 10 NPDES Permits (Physicochemical)Many NPDES permits within catchment or some within one mile of project reach A few NPDES permits within catchment and none within one mile of project reach No NPDES permits within catchment and none within one mile of project reach G 11 Specific Conductance (uS/cm at 25oC) (Physicochemical)Piedmont = >229; Blue Ridge = >66 Piedmont = 78-229; Blue Ridge = 41-66 Piedmont = <78; Blue Ridge = <41 - 12 Watershed impoundments (Biology) Impoundment(s) located within 1 mile upstream or downstream of project area and/or has a negative effect on project area and fish passage No impoundment within 1 mile upstream or downstream of project area OR impoundment does not adversely affect project area but a blockage could exist outside of 1 mile and impact fish passage No impoundment upstream or downstream of project area OR impoundment provides beneficial effect on project area and allows for fish passage G 13 Organism Recruitment (Biology)Channel immediately upstream or downstream of project reach is concrete, piped, or hardened. Channel immediately upstream or downstream of project reach has native bed and bank material, but is impaired. Channel immediately upstream or downstream of project reach has native bed and bank material.F 14 Percent of Catchment being Enhanced or Restored Less than 40% of the total catchment area is draining to the project reach. 40 to 60% of the total catchment area is draining to the project reach. Greater than 60% of the total catchment area is draining to the project reach.G 15 Other Categories Description of Catchment Condition Rating (P/F/G) Catchment Assessment Form Overall Catchment Condition CATCHMENT ASSESSMENT Restoration Potential Purpose: This form is used to determine the project's restoration potential. Version 3.0 Catchment Assessment Form 1 of 1 Project Name: Horne Creek Tribs Reach ID: R1 Restoration Potential:Level 5 ‐ Biology Existing Stream Type: F Proposed Stream Type: B Exisiting Condition Score (ECS) 0.15 Existing BMP Functional Feet Score (FFS) 0 Region: Piedmont Proposed Condition Score (PCS)0.79 Proposed BMP Functional Feet Score (FFS)0 Drainage Area (sqmi):0.06 Change in Functional Condition (PCS ‐ ECS)0.64 Proposed BMP FFS ‐ Existing BMP FFS 0 Proposed Bed Material:Gravel Percent Condition Change 427% Functional Change (%) Existing Stream Length (ft) 1397 Existing Stream Length (ft)1397 Proposed Stream Length (ft):1358 Proposed Stream Length (ft)1358 Stream Slope (%): 3.2 Additional Stream Length (ft) ‐39 Flow Type: Perennial Existing Functional Foot Score (FFS)210 Existing Stream FFS + Existing BMP FFS 210 River Basin: Yadkin‐PeeDee Proposed Functional Foot Score (FFS)1073 Proposed Stream FFS + Proposed BMP FFS 1073 Stream Temperature: Warmwater Proposed FFS ‐ Existing FFS 863 Total Proposed FFS ‐ Total Existing FFS 863 Data Collection Season: Summer Functional Change (%)412% Functional Change (%)411% Valley Type: Confined Alluvial Catchment Hydrology 0.30 0.30 Reach Runoff 0.61 0.70 Hydraulics Floodplain Connectivity 0.00 1.00 Large Woody Debris Lateral Stability 0.50 1.00 Riparian Vegetation 0.13 0.70 Bed Material 0.36 1.00 Bed Form Diversity 0.15 1.00 Plan Form 0.00 0.70 Temperature Bacteria Organic Matter 0.00 0.75 Nitrogen Phosphorus Macros 0.06 0.82 Fish Functional Category Function‐Based Parameters Field Value Index Value Parameter Category Category Overall Overall Catchment Hydrology Curve Number 70 0.3 0.30 Curve Number 59 0.61 Concentrated Flow Points Soil Compaction Bank Height Ratio 2.5 0 Entrenchment Ratio 1.1 0 LWD Index # Pieces Erosion Rate (ft/yr) Dominant BEHI/NBS M/M 0.5 Percent Streambank Erosion (%) Left Canopy Coverage (%) Right Canopy Coverage (%) Left Buffer Width (ft)10 0.23 Right Buffer Width (ft)10 0.23 Left Basal Area (sq.ft/acre) Right Basal Area (sq.ft/acre) Left Stem Density (stems/acre)15 0.03 Right Stem Density (stems/acre)15 0.03 Bed Material Characterization Size Class Pebble Count Analyzer (p‐value)0.06 0.36 0.36 Pool Spacing Ratio Pool Depth Ratio 1.2 0.3 Percent Riffle 80 0 Aggradation Ratio Plan Form Sinuosity 1.1 0 0.00 Temperature Summer Daily Maximum  (°F) Bacteria Fecal Coliform (Cfu/100 ml) Leaf Litter Processing Rate Percent Shredders 00 Nitrogen Total Nitrogen (mg/L) Phosphorus Total Phosphorus (mg/L) Biotic Index 6.53 0.11 EPT Taxa Present 10 Fish North Carolina Index of Biotic Integrity Functional Category Function‐Based Parameters Field Value Index Value Parameter Category Category Overall Overall Catchment Hydrology Curve Number 70 0.3 0.30 Curve Number 55 0.7 Concentrated Flow Points Soil Compaction Bank Height Ratio 11 Entrenchment Ratio 2.2 1 LWD Index # Pieces Erosion Rate (ft/yr) Dominant BEHI/NBS L/L 1 Percent Streambank Erosion (%) Left Canopy Coverage (%) 100 1 Right Canopy Coverage (%)100 1 Left Buffer Width (ft)30 0.7 Right Buffer Width (ft)30 0.7 Left Basal Area (sq.ft/acre) Right Basal Area (sq.ft/acre) Left Stem Density (stems/acre)210 0.4 Right Stem Density (stems/acre)210 0.4 Bed Material Characterization Size Class Pebble Count Analyzer (p‐value)0.7 1 1.00 Pool Spacing Ratio Pool Depth Ratio 21 Percent Riffle 60 1 Aggradation Ratio Plan Form Sinuosity 1.15 0.7 0.70 Temperature Summer Daily Maximum  (°F) Bacteria Fecal Coliform (Cfu/100 ml) Leaf Litter Processing Rate Percent Shredders 9 0.75 Nitrogen Total Nitrogen (mg/L) Phosphorus Total Phosphorus (mg/L) Biotic Index 21 EPT Taxa Present 20 0.64 Fish North Carolina Index of Biotic Integrity Large Woody Debris 0.00 Not Functioning0.00 Reach Runoff Physicochemical 0.00 0.75 0.75 Biology 0.06 0.82 0.76 FUNCTIONAL CHANGE SUMMARY Function‐Based Parameters Geomorphology Floodplain Connectivity Lateral Stability Riparian Vegetation FUNCTIONAL CATEGORY REPORT CARD 0.04 1.00 0.65 Measurement Method 0.13 Roll Up Scoring Not Functioning Hydrology 0.46 0.50 Hydraulics 0.00 Functional ChangeProposed ParameterExisting ParameterFunctional Category Hydraulics 1. Users input values that are highlighted based on restoration potential 2. Users select values from a pull‐down menu Functional Category   EXISTING CONDITION ASSESSMENT Hydrology 0.23 0.88 PCS 1.00 Geomorphology ECS Site Information and  Performance Standard Stratification Notes 0.46 Functioning At Risk Hydrology Geomorphology Physicochemical Biology FUNCTIONAL FEET (FF) SUMMARY 3. Leave values blank for field values that were not measured BMP FUNCTIONAL CHANGE SUMMARY FUNCTION BASED PARAMETERS SUMMARY 1.00 1.00 0.00 0.06 Functioning At Risk 0.15 0.23 Not Functioning 0.00 0.06 Not Functioning 0.61 Reach Runoff 0.70 0.50 0.50 Functioning At Risk 0.79 Measurement Method 0.75Physicochemical Organic Carbon Biology Macros 0.82 Bed Form Diversity 0.15 Bed Form Diversity 1.00 Hydraulics Floodplain Connectivity Geomorphology Lateral Stability Riparian Vegetation PROPOSED CONDITION ASSESSMENT 0.70 Hydrology 1.00 Macros Functioning 0.82 Functioning 0.75 Not Functioning Biology Organic CarbonPhysicochemical Roll Up Scoring Functioning 0.88 Functioning Large Woody Debris Horne CrTribs-R2 Rater(s): KMV Date: 5/9/18 F Level 3 - Geomorphology Poor Fair Good 1 Concentrated Flow (Hydrology) Potential for concentrated flow/impairments immediately upstream of the project and no treatments are in place Some potential for concentrated flow/impairments to reach restoration site, however, measures are in place to protect resources No potential for concentrated flow/impairments from adjacent land use G 2 Impervious cover (Hydrology)Greater than 25% Between 10% and 25%Less than 10% G 3 Land Use Change (Hydrology)Rapidly urbanizing/urban Single family homes/suburban Rural communities/slow growth or primarily forested G 4 Distance to Roads (Hydrology) Roads located in or adjacent to project reach and/or major roads proposed in 10 year DOT plans No roads in or adjacent to project reach. No more than one major road proposed in 10 year DOT plans. No roads in or adjacent to project reach. No proposed roads in 10 year DOT plans.G 5 Percent Forested (Hydrology)<= 20%>20% and <70%>=70%P 6 Riparian Vegetation (Geomorphology)<50% of contributing stream length has > 25 ft corridor width 50-80% of contributing stream length has > 25 ft corridor width >80% of contributing stream length has > 25 ft corridor width P 7 Sediment Supply (Geomorphology)High sediment supply from upstream bank erosion and surface runoff Moderate sediment supply from upstream bank erosion and surface runoff Low sediment supply. Upstream bank erosion and surface runoff is minimal G 8 Located on or downstream of a 303(d) listed stream TMDL list (Physicochemical) On, upstream, or downstream of 303(d) and no TMDL/WS Mgmt plan to address deficiencies On, upstream, or downstream of 303(d) and TMDL/WS Mgmt plan addressing deficiencies Not on 303(d) list G 9 Agricultural Land Use (Physicochemical)Livestock access to stream and/or intensive cropland immediately upstream of project reach. Livestock access to stream and/or intensive cropland upstream of project reach. A sufficient reach of stream is between Ag. land use and project reach. There is little to no agricultural land uses or the livestock or cropland is far enough away from project reach to cause no impact to water quality or biology. P 10 NPDES Permits (Physicochemical)Many NPDES permits within catchment or some within one mile of project reach A few NPDES permits within catchment and none within one mile of project reach No NPDES permits within catchment and none within one mile of project reach G 11 Specific Conductance (uS/cm at 25oC) (Physicochemical)Piedmont = >229; Blue Ridge = >66 Piedmont = 78-229; Blue Ridge = 41-66 Piedmont = <78; Blue Ridge = <41 - 12 Watershed impoundments (Biology) Impoundment(s) located within 1 mile upstream or downstream of project area and/or has a negative effect on project area and fish passage No impoundment within 1 mile upstream or downstream of project area OR impoundment does not adversely affect project area but a blockage could exist outside of 1 mile and impact fish passage No impoundment upstream or downstream of project area OR impoundment provides beneficial effect on project area and allows for fish passage G 13 Organism Recruitment (Biology)Channel immediately upstream or downstream of project reach is concrete, piped, or hardened. Channel immediately upstream or downstream of project reach has native bed and bank material, but is impaired. Channel immediately upstream or downstream of project reach has native bed and bank material.P 14 Percent of Catchment being Enhanced or Restored Less than 40% of the total catchment area is draining to the project reach. 40 to 60% of the total catchment area is draining to the project reach. Greater than 60% of the total catchment area is draining to the project reach.G 15 Other Categories Description of Catchment Condition Rating (P/F/G) Catchment Assessment Form Overall Catchment Condition CATCHMENT ASSESSMENT Restoration Potential Purpose: This form is used to determine the project's restoration potential. Version 2.0 Catchment Assessment Form 1 of 1 12-28-2016 Project Name: Horne Creek Tribs Reach ID: R2 Restoration Potential:Level 3 ‐ Geomorphology Existing Stream Type: G Proposed Stream Type: B Exisiting Condition Score (ECS) 0.24 Existing BMP Functional Feet Score (FFS) 0 Region: Piedmont Proposed Condition Score (PCS)0.48 Proposed BMP Functional Feet Score (FFS)0 Drainage Area (sqmi):0.064 Change in Functional Condition (PCS ‐ ECS)0.24 Proposed BMP FFS ‐ Existing BMP FFS 0 Proposed Bed Material:Gravel Percent Condition Change 100% Functional Change (%) Existing Stream Length (ft) 286 Existing Stream Length (ft)286 Proposed Stream Length (ft):296 Proposed Stream Length (ft)296 Stream Slope (%): 3.1 Additional Stream Length (ft) 10 Flow Type: Intermittent Existing Functional Foot Score (FFS)69 Existing Stream FFS + Existing BMP FFS 69 River Basin: Yadkin‐PeeDee Proposed Functional Foot Score (FFS)142 Proposed Stream FFS + Proposed BMP FFS 142 Stream Temperature: Warmwater Proposed FFS ‐ Existing FFS 73 Total Proposed FFS ‐ Total Existing FFS 73 Data Collection Season: Summer Functional Change (%)107% Functional Change (%)106% Valley Type: Confined Alluvial Catchment Hydrology 0.36 0.36 Reach Runoff 0.63 0.74 Hydraulics Floodplain Connectivity 0.15 1.00 Large Woody Debris Lateral Stability 1.00 1.00 Riparian Vegetation 0.30 0.70 Bed Material 1.00 1.00 Bed Form Diversity 0.36 0.94 Plan Form 0.00 0.70 Temperature Bacteria Organic Matter Nitrogen Phosphorus Macros Fish Functional Category Function‐Based Parameters Field Value Index Value Parameter Category Category Overall Overall Catchment Hydrology Curve Number 68 0.36 0.36 Curve Number 58 0.63 Concentrated Flow Points Soil Compaction Bank Height Ratio 2.1 0 Entrenchment Ratio 1.2 0.3 LWD Index # Pieces Erosion Rate (ft/yr) Dominant BEHI/NBS L/L 1 Percent Streambank Erosion (%) Left Canopy Coverage (%) Right Canopy Coverage (%) Left Buffer Width (ft)5 0.12 Right Buffer Width (ft)50 1 Left Basal Area (sq.ft/acre) Right Basal Area (sq.ft/acre) Left Stem Density (stems/acre)20 0.04 Right Stem Density (stems/acre)20 0.04 Bed Material Characterization Size Class Pebble Count Analyzer (p‐value)0.8 1 1.00 Pool Spacing Ratio 6 0.4 Pool Depth Ratio 1.5 0.69 Percent Riffle 80 0 Aggradation Ratio Plan Form Sinuosity 1.07 0 0.00 Temperature Summer Daily Maximum  (°F) Bacteria Fecal Coliform (Cfu/100 ml) Leaf Litter Processing Rate Percent Shredders Nitrogen Total Nitrogen (mg/L) Phosphorus Total Phosphorus (mg/L) Biotic Index EPT Taxa Present Fish North Carolina Index of Biotic Integrity Functional Category Function‐Based Parameters Field Value Index Value Parameter Category Category Overall Overall Catchment Hydrology Curve Number 68 0.36 0.36 Curve Number 53 0.74 Concentrated Flow Points Soil Compaction Bank Height Ratio 11 Entrenchment Ratio 2.2 1 LWD Index # Pieces Erosion Rate (ft/yr) Dominant BEHI/NBS L/L 1 Percent Streambank Erosion (%) Left Canopy Coverage (%) 100 1 Right Canopy Coverage (%)100 1 Left Buffer Width (ft)30 0.7 Right Buffer Width (ft)30 0.7 Left Basal Area (sq.ft/acre) Right Basal Area (sq.ft/acre) Left Stem Density (stems/acre)210 0.4 Right Stem Density (stems/acre)210 0.4 Bed Material Characterization Size Class Pebble Count Analyzer (p‐value)0.7 1 1.00 Pool Spacing Ratio 3 0.82 Pool Depth Ratio 21 Percent Riffle 60 1 Aggradation Ratio Plan Form Sinuosity 1.15 0.7 0.70 Temperature Summer Daily Maximum  (°F) Bacteria Fecal Coliform (Cfu/100 ml) Leaf Litter Processing Rate Percent Shredders Nitrogen Total Nitrogen (mg/L) Phosphorus Total Phosphorus (mg/L) Biotic Index EPT Taxa Present Fish North Carolina Index of Biotic Integrity Large Woody Debris 0.15 Not Functioning0.15 Reach Runoff Physicochemical Biology FUNCTIONAL CHANGE SUMMARY Function‐Based Parameters Geomorphology Floodplain Connectivity Lateral Stability Riparian Vegetation FUNCTIONAL CATEGORY REPORT CARD 0.05 0.85 0.34 Measurement Method 0.30 Roll Up Scoring Not Functioning Hydrology 0.50 0.55 Hydraulics 0.15 Functional ChangeProposed ParameterExisting ParameterFunctional Category Hydraulics 1. Users input values that are highlighted based on restoration potential 2. Users select values from a pull‐down menu Functional Category   EXISTING CONDITION ASSESSMENT Hydrology 0.53 0.87 PCS 1.00 Geomorphology ECS Site Information and  Performance Standard Stratification Notes 0.50 Functioning At Risk Hydrology Geomorphology Physicochemical Biology FUNCTIONAL FEET (FF) SUMMARY 3. Leave values blank for field values that were not measured BMP FUNCTIONAL CHANGE SUMMARY FUNCTION BASED PARAMETERS SUMMARY 1.00 1.00 Functioning At Risk 0.24 0.53 Functioning At Risk 0.63 Reach Runoff 0.74 1.00 0.55 Functioning At Risk 0.48 Measurement Method Physicochemical Organic Carbon Biology Macros Bed Form Diversity 0.36 Bed Form Diversity 0.94 Hydraulics Floodplain Connectivity Geomorphology Lateral Stability Riparian Vegetation PROPOSED CONDITION ASSESSMENT 0.70 Hydrology 1.00 Macros Functioning Biology Organic CarbonPhysicochemical Roll Up Scoring Functioning 0.87 Large Woody Debris Horne CrTribs-R3 Rater(s): KMV Date: 5/9/18 F Level 3 - Geomorphology Poor Fair Good 1 Concentrated Flow (Hydrology) Potential for concentrated flow/impairments immediately upstream of the project and no treatments are in place Some potential for concentrated flow/impairments to reach restoration site, however, measures are in place to protect resources No potential for concentrated flow/impairments from adjacent land use G 2 Impervious cover (Hydrology)Greater than 25% Between 10% and 25%Less than 10% G 3 Land Use Change (Hydrology)Rapidly urbanizing/urban Single family homes/suburban Rural communities/slow growth or primarily forested G 4 Distance to Roads (Hydrology) Roads located in or adjacent to project reach and/or major roads proposed in 10 year DOT plans No roads in or adjacent to project reach. No more than one major road proposed in 10 year DOT plans. No roads in or adjacent to project reach. No proposed roads in 10 year DOT plans.G 5 Percent Forested (Hydrology)<= 20%>20% and <70%>=70%P 6 Riparian Vegetation (Geomorphology)<50% of contributing stream length has > 25 ft corridor width 50-80% of contributing stream length has > 25 ft corridor width >80% of contributing stream length has > 25 ft corridor width P 7 Sediment Supply (Geomorphology)High sediment supply from upstream bank erosion and surface runoff Moderate sediment supply from upstream bank erosion and surface runoff Low sediment supply. Upstream bank erosion and surface runoff is minimal G 8 Located on or downstream of a 303(d) listed stream TMDL list (Physicochemical) On, upstream, or downstream of 303(d) and no TMDL/WS Mgmt plan to address deficiencies On, upstream, or downstream of 303(d) and TMDL/WS Mgmt plan addressing deficiencies Not on 303(d) list G 9 Agricultural Land Use (Physicochemical)Livestock access to stream and/or intensive cropland immediately upstream of project reach. Livestock access to stream and/or intensive cropland upstream of project reach. A sufficient reach of stream is between Ag. land use and project reach. There is little to no agricultural land uses or the livestock or cropland is far enough away from project reach to cause no impact to water quality or biology. P 10 NPDES Permits (Physicochemical)Many NPDES permits within catchment or some within one mile of project reach A few NPDES permits within catchment and none within one mile of project reach No NPDES permits within catchment and none within one mile of project reach G 11 Specific Conductance (uS/cm at 25oC) (Physicochemical)Piedmont = >229; Blue Ridge = >66 Piedmont = 78-229; Blue Ridge = 41-66 Piedmont = <78; Blue Ridge = <41 - 12 Watershed impoundments (Biology) Impoundment(s) located within 1 mile upstream or downstream of project area and/or has a negative effect on project area and fish passage No impoundment within 1 mile upstream or downstream of project area OR impoundment does not adversely affect project area but a blockage could exist outside of 1 mile and impact fish passage No impoundment upstream or downstream of project area OR impoundment provides beneficial effect on project area and allows for fish passage G 13 Organism Recruitment (Biology)Channel immediately upstream or downstream of project reach is concrete, piped, or hardened. Channel immediately upstream or downstream of project reach has native bed and bank material, but is impaired. Channel immediately upstream or downstream of project reach has native bed and bank material.P 14 Percent of Catchment being Enhanced or Restored Less than 40% of the total catchment area is draining to the project reach. 40 to 60% of the total catchment area is draining to the project reach. Greater than 60% of the total catchment area is draining to the project reach.G 15 Other Categories Description of Catchment Condition Rating (P/F/G) Catchment Assessment Form Overall Catchment Condition CATCHMENT ASSESSMENT Restoration Potential Purpose: This form is used to determine the project's restoration potential. Version 2.0 Catchment Assessment Form 1 of 1 12-28-2016 Project Name: Horne Creek Tribs Reach ID: R3 Restoration Potential:Level 3 ‐ Geomorphology Existing Stream Type: G Proposed Stream Type: B Exisiting Condition Score (ECS) 0.31 Existing BMP Functional Feet Score (FFS) 0 Region: Piedmont Proposed Condition Score (PCS)0.49 Proposed BMP Functional Feet Score (FFS)0 Drainage Area (sqmi):0.05 Change in Functional Condition (PCS ‐ ECS)0.18 Proposed BMP FFS ‐ Existing BMP FFS 0 Proposed Bed Material:Gravel Percent Condition Change 58% Functional Change (%) Existing Stream Length (ft) 76 Existing Stream Length (ft)76 Proposed Stream Length (ft):76 Proposed Stream Length (ft)76 Stream Slope (%): 4.6 Additional Stream Length (ft) 0 Flow Type: Intermittent Existing Functional Foot Score (FFS)24 Existing Stream FFS + Existing BMP FFS 24 River Basin: Yadkin‐PeeDee Proposed Functional Foot Score (FFS)37 Proposed Stream FFS + Proposed BMP FFS 37 Stream Temperature: Warmwater Proposed FFS ‐ Existing FFS 14 Total Proposed FFS ‐ Total Existing FFS 13 Data Collection Season: Summer Functional Change (%)58% Functional Change (%)54% Valley Type: Confined Alluvial Catchment Hydrology 0.36 0.36 Reach Runoff 0.63 0.74 Hydraulics Floodplain Connectivity 0.50 1.00 Large Woody Debris Lateral Stability 1.00 1.00 Riparian Vegetation 0.10 0.75 Bed Material 0.58 1.00 Bed Form Diversity 1.00 1.00 Plan Form 0.00 0.70 Temperature Bacteria Organic Matter Nitrogen Phosphorus Macros Fish Functional Category Function‐Based Parameters Field Value Index Value Parameter Category Category Overall Overall Catchment Hydrology Curve Number 68 0.36 0.36 Curve Number 58 0.63 Concentrated Flow Points Soil Compaction Bank Height Ratio 2.7 0 Entrenchment Ratio 41 LWD Index # Pieces Erosion Rate (ft/yr) Dominant BEHI/NBS L/L 1 Percent Streambank Erosion (%) Left Canopy Coverage (%) 5 0.06 Right Canopy Coverage (%)5 0.06 Left Buffer Width (ft)10 0.23 Right Buffer Width (ft)10 0.23 Left Basal Area (sq.ft/acre) Right Basal Area (sq.ft/acre) Left Stem Density (stems/acre)10 0.02 Right Stem Density (stems/acre)10 0.02 Bed Material Characterization Size Class Pebble Count Analyzer (p‐value)0.09 0.58 0.58 Pool Spacing Ratio 31 Pool Depth Ratio 21 Percent Riffle 50 1 Aggradation Ratio Plan Form Sinuosity 1.07 0 0.00 Temperature Summer Daily Maximum  (°F) Bacteria Fecal Coliform (Cfu/100 ml) Leaf Litter Processing Rate Percent Shredders Nitrogen Total Nitrogen (mg/L) Phosphorus Total Phosphorus (mg/L) Biotic Index EPT Taxa Present Fish North Carolina Index of Biotic Integrity Functional Category Function‐Based Parameters Field Value Index Value Parameter Category Category Overall Overall Catchment Hydrology Curve Number 68 0.36 0.36 Curve Number 53 0.74 Concentrated Flow Points Soil Compaction Bank Height Ratio 11 Entrenchment Ratio 2.2 1 LWD Index # Pieces Erosion Rate (ft/yr) Dominant BEHI/NBS L/L 1 Percent Streambank Erosion (%) Left Canopy Coverage (%) 100 1 Right Canopy Coverage (%)100 1 Left Buffer Width (ft)50 1 Right Buffer Width (ft)30 0.7 Left Basal Area (sq.ft/acre) Right Basal Area (sq.ft/acre) Left Stem Density (stems/acre)210 0.4 Right Stem Density (stems/acre)210 0.4 Bed Material Characterization Size Class Pebble Count Analyzer (p‐value)0.7 1 1.00 Pool Spacing Ratio 31 Pool Depth Ratio 21 Percent Riffle 60 1 Aggradation Ratio Plan Form Sinuosity 1.15 0.7 0.70 Temperature Summer Daily Maximum  (°F) Bacteria Fecal Coliform (Cfu/100 ml) Leaf Litter Processing Rate Percent Shredders Nitrogen Total Nitrogen (mg/L) Phosphorus Total Phosphorus (mg/L) Biotic Index EPT Taxa Present Fish North Carolina Index of Biotic Integrity Large Woody Debris 0.50 Functioning At Risk0.50 Reach Runoff Physicochemical Biology FUNCTIONAL CHANGE SUMMARY Function‐Based Parameters Geomorphology Floodplain Connectivity Lateral Stability Riparian Vegetation FUNCTIONAL CATEGORY REPORT CARD 0.05 0.50 0.35 Measurement Method 0.10 Roll Up Scoring Functioning At Risk Hydrology 0.50 0.55 Hydraulics 0.50 Functional ChangeProposed ParameterExisting ParameterFunctional Category Hydraulics 1. Users input values that are highlighted based on restoration potential 2. Users select values from a pull‐down menu Functional Category   EXISTING CONDITION ASSESSMENT Hydrology 0.54 0.89 PCS 1.00 Geomorphology ECS Site Information and  Performance Standard Stratification Notes 0.50 Functioning At Risk Hydrology Geomorphology Physicochemical Biology FUNCTIONAL FEET (FF) SUMMARY 3. Leave values blank for field values that were not measured BMP FUNCTIONAL CHANGE SUMMARY FUNCTION BASED PARAMETERS SUMMARY 1.00 1.00 Functioning At Risk 0.31 0.54 Functioning At Risk 0.63 Reach Runoff 0.74 1.00 0.55 Functioning At Risk 0.49 Measurement Method Physicochemical Organic Carbon Biology Macros Bed Form Diversity 1.00 Bed Form Diversity 1.00 Hydraulics Floodplain Connectivity Geomorphology Lateral Stability Riparian Vegetation PROPOSED CONDITION ASSESSMENT 0.75 Hydrology 1.00 Macros Functioning Biology Organic CarbonPhysicochemical Roll Up Scoring Functioning 0.89 Large Woody Debris Horne CrTribs-R4 Rater(s): KMV Date: 5/9/18 F Level 3 - Geomorphology Poor Fair Good 1 Concentrated Flow (Hydrology) Potential for concentrated flow/impairments immediately upstream of the project and no treatments are in place Some potential for concentrated flow/impairments to reach restoration site, however, measures are in place to protect resources No potential for concentrated flow/impairments from adjacent land use G 2 Impervious cover (Hydrology)Greater than 25% Between 10% and 25%Less than 10% G 3 Land Use Change (Hydrology)Rapidly urbanizing/urban Single family homes/suburban Rural communities/slow growth or primarily forested G 4 Distance to Roads (Hydrology) Roads located in or adjacent to project reach and/or major roads proposed in 10 year DOT plans No roads in or adjacent to project reach. No more than one major road proposed in 10 year DOT plans. No roads in or adjacent to project reach. No proposed roads in 10 year DOT plans.G 5 Percent Forested (Hydrology)<= 20%>20% and <70%>=70%P 6 Riparian Vegetation (Geomorphology)<50% of contributing stream length has > 25 ft corridor width 50-80% of contributing stream length has > 25 ft corridor width >80% of contributing stream length has > 25 ft corridor width P 7 Sediment Supply (Geomorphology)High sediment supply from upstream bank erosion and surface runoff Moderate sediment supply from upstream bank erosion and surface runoff Low sediment supply. Upstream bank erosion and surface runoff is minimal G 8 Located on or downstream of a 303(d) listed stream TMDL list (Physicochemical) On, upstream, or downstream of 303(d) and no TMDL/WS Mgmt plan to address deficiencies On, upstream, or downstream of 303(d) and TMDL/WS Mgmt plan addressing deficiencies Not on 303(d) list G 9 Agricultural Land Use (Physicochemical)Livestock access to stream and/or intensive cropland immediately upstream of project reach. Livestock access to stream and/or intensive cropland upstream of project reach. A sufficient reach of stream is between Ag. land use and project reach. There is little to no agricultural land uses or the livestock or cropland is far enough away from project reach to cause no impact to water quality or biology. P 10 NPDES Permits (Physicochemical)Many NPDES permits within catchment or some within one mile of project reach A few NPDES permits within catchment and none within one mile of project reach No NPDES permits within catchment and none within one mile of project reach G 11 Specific Conductance (uS/cm at 25oC) (Physicochemical)Piedmont = >229; Blue Ridge = >66 Piedmont = 78-229; Blue Ridge = 41-66 Piedmont = <78; Blue Ridge = <41 - 12 Watershed impoundments (Biology) Impoundment(s) located within 1 mile upstream or downstream of project area and/or has a negative effect on project area and fish passage No impoundment within 1 mile upstream or downstream of project area OR impoundment does not adversely affect project area but a blockage could exist outside of 1 mile and impact fish passage No impoundment upstream or downstream of project area OR impoundment provides beneficial effect on project area and allows for fish passage G 13 Organism Recruitment (Biology)Channel immediately upstream or downstream of project reach is concrete, piped, or hardened. Channel immediately upstream or downstream of project reach has native bed and bank material, but is impaired. Channel immediately upstream or downstream of project reach has native bed and bank material.P 14 Percent of Catchment being Enhanced or Restored Less than 40% of the total catchment area is draining to the project reach. 40 to 60% of the total catchment area is draining to the project reach. Greater than 60% of the total catchment area is draining to the project reach.G 15 Other Categories Description of Catchment Condition Rating (P/F/G) Catchment Assessment Form Overall Catchment Condition CATCHMENT ASSESSMENT Restoration Potential Purpose: This form is used to determine the project's restoration potential. Version 2.0 Catchment Assessment Form 1 of 1 12-28-2016 Project Name: Horne Creek Tribs Reach ID: R4 Restoration Potential:Level 3 ‐ Geomorphology Existing Stream Type: B Proposed Stream Type: Bc Exisiting Condition Score (ECS) 0.31 Existing BMP Functional Feet Score (FFS) 0 Region: Piedmont Proposed Condition Score (PCS)0.50 Proposed BMP Functional Feet Score (FFS)0 Drainage Area (sqmi):0.13 Change in Functional Condition (PCS ‐ ECS)0.19 Proposed BMP FFS ‐ Existing BMP FFS 0 Proposed Bed Material:Gravel Percent Condition Change 61% Functional Change (%) Existing Stream Length (ft) 1191 Existing Stream Length (ft)1191 Proposed Stream Length (ft):1206 Proposed Stream Length (ft)1206 Stream Slope (%): 2.9 Additional Stream Length (ft) 15 Flow Type: Perennial Existing Functional Foot Score (FFS)369 Existing Stream FFS + Existing BMP FFS 369 River Basin: Yadkin‐PeeDee Proposed Functional Foot Score (FFS)603 Proposed Stream FFS + Proposed BMP FFS 603 Stream Temperature: Warmwater Proposed FFS ‐ Existing FFS 234 Total Proposed FFS ‐ Total Existing FFS 234 Data Collection Season: Summer Functional Change (%)63% Functional Change (%)63% Valley Type: Unconfined Alluvial Catchment Hydrology 0.36 0.36 Reach Runoff 0.63 0.74 Hydraulics Floodplain Connectivity 0.41 1.00 Large Woody Debris Lateral Stability 0.50 1.00 Riparian Vegetation 0.36 0.70 Bed Material 0.58 1.00 Bed Form Diversity 0.85 1.00 Plan Form 1.00 1.00 Temperature Bacteria Organic Matter Nitrogen Phosphorus Macros Fish Functional Category Function‐Based Parameters Field Value Index Value Parameter Category Category Overall Overall Catchment Hydrology Curve Number 68 0.36 0.36 Curve Number 58 0.63 Concentrated Flow Points Soil Compaction Bank Height Ratio 4.4 0 Entrenchment Ratio 1.7 0.81 LWD Index # Pieces Erosion Rate (ft/yr) Dominant BEHI/NBS M/M 0.5 Percent Streambank Erosion (%) Left Canopy Coverage (%) 50 0.58 Right Canopy Coverage (%)50 0.58 Left Buffer Width (ft)20 0.47 Right Buffer Width (ft)20 0.47 Left Basal Area (sq.ft/acre) Right Basal Area (sq.ft/acre) Left Stem Density (stems/acre)20 0.04 Right Stem Density (stems/acre)20 0.04 Bed Material Characterization Size Class Pebble Count Analyzer (p‐value)0.09 0.58 0.58 Pool Spacing Ratio 4 FALSE Pool Depth Ratio 1.5 0.69 Percent Riffle 70 1 Aggradation Ratio Plan Form Sinuosity 1.29 1 1.00 Temperature Summer Daily Maximum  (°F) Bacteria Fecal Coliform (Cfu/100 ml) Leaf Litter Processing Rate Percent Shredders Nitrogen Total Nitrogen (mg/L) Phosphorus Total Phosphorus (mg/L) Biotic Index EPT Taxa Present Fish North Carolina Index of Biotic Integrity Functional Category Function‐Based Parameters Field Value Index Value Parameter Category Category Overall Overall Catchment Hydrology Curve Number 68 0.36 0.36 Curve Number 53 0.74 Concentrated Flow Points Soil Compaction Bank Height Ratio 11 Entrenchment Ratio 2.2 1 LWD Index # Pieces Erosion Rate (ft/yr) Dominant BEHI/NBS L/L 1 Percent Streambank Erosion (%) Left Canopy Coverage (%) 100 1 Right Canopy Coverage (%)100 1 Left Buffer Width (ft)30 0.7 Right Buffer Width (ft)30 0.7 Left Basal Area (sq.ft/acre) Right Basal Area (sq.ft/acre) Left Stem Density (stems/acre)210 0.4 Right Stem Density (stems/acre)210 0.4 Bed Material Characterization Size Class Pebble Count Analyzer (p‐value)0.7 1 1.00 Pool Spacing Ratio 2 FALSE Pool Depth Ratio 21 Percent Riffle 60 1 Aggradation Ratio Plan Form Sinuosity 1.25 1 1.00 Temperature Summer Daily Maximum  (°F) Bacteria Fecal Coliform (Cfu/100 ml) Leaf Litter Processing Rate Percent Shredders Nitrogen Total Nitrogen (mg/L) Phosphorus Total Phosphorus (mg/L) Biotic Index EPT Taxa Present Fish North Carolina Index of Biotic Integrity Functioning Biology Organic CarbonPhysicochemical Roll Up Scoring Functioning 0.94 Large Woody Debris Bed Form Diversity 0.85 Bed Form Diversity 1.00 Hydraulics Floodplain Connectivity Geomorphology Lateral Stability Riparian Vegetation PROPOSED CONDITION ASSESSMENT 0.70 Hydrology 1.00 Macros Physicochemical Organic Carbon Biology Macros 1.00 1.00 Functioning At Risk 0.31 0.66 Functioning At Risk 0.63 Reach Runoff 0.74 0.50 0.55 Functioning At Risk 0.50 Measurement Method Hydraulics 1. Users input values that are highlighted based on restoration potential 2. Users select values from a pull‐down menu Functional Category   EXISTING CONDITION ASSESSMENT Hydrology 0.66 0.94 PCS 1.00 Geomorphology ECS Site Information and  Performance Standard Stratification Notes 0.50 Functioning At Risk Hydrology Geomorphology Physicochemical Biology FUNCTIONAL FEET (FF) SUMMARY 3. Leave values blank for field values that were not measured BMP FUNCTIONAL CHANGE SUMMARY FUNCTION BASED PARAMETERS SUMMARY FUNCTIONAL CHANGE SUMMARY Function‐Based Parameters Geomorphology Floodplain Connectivity Lateral Stability Riparian Vegetation FUNCTIONAL CATEGORY REPORT CARD 0.05 0.59 0.28 Measurement Method 0.36 Roll Up Scoring Functioning At Risk Hydrology 0.50 0.55 Hydraulics 0.41 Functional ChangeProposed ParameterExisting ParameterFunctional Category Large Woody Debris 0.41 Functioning At Risk0.41 Reach Runoff Physicochemical Biology Horne CrTribs-R4A Rater(s): KMV Date: 5/9/18 F Level 3 - Geomorphology Poor Fair Good 1 Concentrated Flow (Hydrology) Potential for concentrated flow/impairments immediately upstream of the project and no treatments are in place Some potential for concentrated flow/impairments to reach restoration site, however, measures are in place to protect resources No potential for concentrated flow/impairments from adjacent land use G 2 Impervious cover (Hydrology)Greater than 25% Between 10% and 25%Less than 10% G 3 Land Use Change (Hydrology)Rapidly urbanizing/urban Single family homes/suburban Rural communities/slow growth or primarily forested G 4 Distance to Roads (Hydrology) Roads located in or adjacent to project reach and/or major roads proposed in 10 year DOT plans No roads in or adjacent to project reach. No more than one major road proposed in 10 year DOT plans. No roads in or adjacent to project reach. No proposed roads in 10 year DOT plans.G 5 Percent Forested (Hydrology)<= 20%>20% and <70%>=70%P 6 Riparian Vegetation (Geomorphology)<50% of contributing stream length has > 25 ft corridor width 50-80% of contributing stream length has > 25 ft corridor width >80% of contributing stream length has > 25 ft corridor width P 7 Sediment Supply (Geomorphology)High sediment supply from upstream bank erosion and surface runoff Moderate sediment supply from upstream bank erosion and surface runoff Low sediment supply. Upstream bank erosion and surface runoff is minimal G 8 Located on or downstream of a 303(d) listed stream TMDL list (Physicochemical) On, upstream, or downstream of 303(d) and no TMDL/WS Mgmt plan to address deficiencies On, upstream, or downstream of 303(d) and TMDL/WS Mgmt plan addressing deficiencies Not on 303(d) list G 9 Agricultural Land Use (Physicochemical)Livestock access to stream and/or intensive cropland immediately upstream of project reach. Livestock access to stream and/or intensive cropland upstream of project reach. A sufficient reach of stream is between Ag. land use and project reach. There is little to no agricultural land uses or the livestock or cropland is far enough away from project reach to cause no impact to water quality or biology. P 10 NPDES Permits (Physicochemical)Many NPDES permits within catchment or some within one mile of project reach A few NPDES permits within catchment and none within one mile of project reach No NPDES permits within catchment and none within one mile of project reach G 11 Specific Conductance (uS/cm at 25oC) (Physicochemical)Piedmont = >229; Blue Ridge = >66 Piedmont = 78-229; Blue Ridge = 41-66 Piedmont = <78; Blue Ridge = <41 - 12 Watershed impoundments (Biology) Impoundment(s) located within 1 mile upstream or downstream of project area and/or has a negative effect on project area and fish passage No impoundment within 1 mile upstream or downstream of project area OR impoundment does not adversely affect project area but a blockage could exist outside of 1 mile and impact fish passage No impoundment upstream or downstream of project area OR impoundment provides beneficial effect on project area and allows for fish passage G 13 Organism Recruitment (Biology)Channel immediately upstream or downstream of project reach is concrete, piped, or hardened. Channel immediately upstream or downstream of project reach has native bed and bank material, but is impaired. Channel immediately upstream or downstream of project reach has native bed and bank material.P 14 Percent of Catchment being Enhanced or Restored Less than 40% of the total catchment area is draining to the project reach. 40 to 60% of the total catchment area is draining to the project reach. Greater than 60% of the total catchment area is draining to the project reach.G 15 Other Categories Description of Catchment Condition Rating (P/F/G) Catchment Assessment Form Overall Catchment Condition CATCHMENT ASSESSMENT Restoration Potential Purpose: This form is used to determine the project's restoration potential. Version 2.0 Catchment Assessment Form 1 of 1 12-28-2016 Project Name: Horne Creek Tribs Reach ID: R4A Restoration Potential:Level 3 ‐ Geomorphology Existing Stream Type: G Proposed Stream Type: Bc Exisiting Condition Score (ECS) 0.27 Existing BMP Functional Feet Score (FFS) 0 Region: Piedmont Proposed Condition Score (PCS)0.49 Proposed BMP Functional Feet Score (FFS)0 Drainage Area (sqmi):0.05 Change in Functional Condition (PCS ‐ ECS)0.22 Proposed BMP FFS ‐ Existing BMP FFS 0 Proposed Bed Material:Gravel Percent Condition Change 81% Functional Change (%) Existing Stream Length (ft) 124 Existing Stream Length (ft)124 Proposed Stream Length (ft):167 Proposed Stream Length (ft)167 Stream Slope (%): 2 Additional Stream Length (ft) 43 Flow Type: Perennial Existing Functional Foot Score (FFS)33 Existing Stream FFS + Existing BMP FFS 33 River Basin: Yadkin‐PeeDee Proposed Functional Foot Score (FFS)82 Proposed Stream FFS + Proposed BMP FFS 82 Stream Temperature: Warmwater Proposed FFS ‐ Existing FFS 48 Total Proposed FFS ‐ Total Existing FFS 49 Data Collection Season: Summer Functional Change (%)144% Functional Change (%)148% Valley Type: Confined Alluvial Catchment Hydrology 0.36 0.36 Reach Runoff 0.63 0.74 Hydraulics Floodplain Connectivity 0.35 1.00 Large Woody Debris Lateral Stability 0.60 1.00 Riparian Vegetation 0.49 0.70 Bed Material 0.58 1.00 Bed Form Diversity 0.15 1.00 Plan Form 0.74 0.70 Temperature Bacteria Organic Matter Nitrogen Phosphorus Macros Fish Functional Category Function‐Based Parameters Field Value Index Value Parameter Category Category Overall Overall Catchment Hydrology Curve Number 68 0.36 0.36 Curve Number 58 0.63 Concentrated Flow Points Soil Compaction Bank Height Ratio 1.7 0 Entrenchment Ratio 1.4 0.7 LWD Index # Pieces Erosion Rate (ft/yr) Dominant BEHI/NBS M/L 0.6 Percent Streambank Erosion (%) Left Canopy Coverage (%) 70 0.79 Right Canopy Coverage (%)70 0.79 Left Buffer Width (ft)25 0.58 Right Buffer Width (ft)25 0.58 Left Basal Area (sq.ft/acre) Right Basal Area (sq.ft/acre) Left Stem Density (stems/acre)50 0.1 Right Stem Density (stems/acre)50 0.1 Bed Material Characterization Size Class Pebble Count Analyzer (p‐value)0.09 0.58 0.58 Pool Spacing Ratio 4 FALSE Pool Depth Ratio 10 Percent Riffle 80 0.3 Aggradation Ratio Plan Form Sinuosity 1.18 0.74 0.74 Temperature Summer Daily Maximum  (°F) Bacteria Fecal Coliform (Cfu/100 ml) Leaf Litter Processing Rate Percent Shredders Nitrogen Total Nitrogen (mg/L) Phosphorus Total Phosphorus (mg/L) Biotic Index EPT Taxa Present Fish North Carolina Index of Biotic Integrity Functional Category Function‐Based Parameters Field Value Index Value Parameter Category Category Overall Overall Catchment Hydrology Curve Number 68 0.36 0.36 Curve Number 53 0.74 Concentrated Flow Points Soil Compaction Bank Height Ratio 11 Entrenchment Ratio 2.2 1 LWD Index # Pieces Erosion Rate (ft/yr) Dominant BEHI/NBS L/L 1 Percent Streambank Erosion (%) Left Canopy Coverage (%) 100 1 Right Canopy Coverage (%)100 1 Left Buffer Width (ft)30 0.7 Right Buffer Width (ft)30 0.7 Left Basal Area (sq.ft/acre) Right Basal Area (sq.ft/acre) Left Stem Density (stems/acre)210 0.4 Right Stem Density (stems/acre)210 0.4 Bed Material Characterization Size Class Pebble Count Analyzer (p‐value)0.7 1 1.00 Pool Spacing Ratio 3 FALSE Pool Depth Ratio 21 Percent Riffle 60 1 Aggradation Ratio Plan Form Sinuosity 1.15 0.7 0.70 Temperature Summer Daily Maximum  (°F) Bacteria Fecal Coliform (Cfu/100 ml) Leaf Litter Processing Rate Percent Shredders Nitrogen Total Nitrogen (mg/L) Phosphorus Total Phosphorus (mg/L) Biotic Index EPT Taxa Present Fish North Carolina Index of Biotic Integrity Functioning Biology Organic CarbonPhysicochemical Roll Up Scoring Functioning 0.88 Large Woody Debris Bed Form Diversity 0.15 Bed Form Diversity 1.00 Hydraulics Floodplain Connectivity Geomorphology Lateral Stability Riparian Vegetation PROPOSED CONDITION ASSESSMENT 0.70 Hydrology 1.00 Macros Physicochemical Organic Carbon Biology Macros 1.00 1.00 Functioning At Risk 0.27 0.51 Functioning At Risk 0.63 Reach Runoff 0.74 0.60 0.55 Functioning At Risk 0.49 Measurement Method Hydraulics 1. Users input values that are highlighted based on restoration potential 2. Users select values from a pull‐down menu Functional Category   EXISTING CONDITION ASSESSMENT Hydrology 0.51 0.88 PCS 1.00 Geomorphology ECS Site Information and  Performance Standard Stratification Notes 0.50 Functioning At Risk Hydrology Geomorphology Physicochemical Biology FUNCTIONAL FEET (FF) SUMMARY 3. Leave values blank for field values that were not measured BMP FUNCTIONAL CHANGE SUMMARY FUNCTION BASED PARAMETERS SUMMARY FUNCTIONAL CHANGE SUMMARY Function‐Based Parameters Geomorphology Floodplain Connectivity Lateral Stability Riparian Vegetation FUNCTIONAL CATEGORY REPORT CARD 0.05 0.65 0.37 Measurement Method 0.49 Roll Up Scoring Not Functioning Hydrology 0.50 0.55 Hydraulics 0.35 Functional ChangeProposed ParameterExisting ParameterFunctional Category Large Woody Debris 0.35 Functioning At Risk0.35 Reach Runoff Physicochemical Biology Horne CrTribs-R4B Rater(s): KMV Date: 5/9/18 F Level 3 - Geomorphology Poor Fair Good 1 Concentrated Flow (Hydrology) Potential for concentrated flow/impairments immediately upstream of the project and no treatments are in place Some potential for concentrated flow/impairments to reach restoration site, however, measures are in place to protect resources No potential for concentrated flow/impairments from adjacent land use G 2 Impervious cover (Hydrology)Greater than 25% Between 10% and 25%Less than 10% G 3 Land Use Change (Hydrology)Rapidly urbanizing/urban Single family homes/suburban Rural communities/slow growth or primarily forested G 4 Distance to Roads (Hydrology) Roads located in or adjacent to project reach and/or major roads proposed in 10 year DOT plans No roads in or adjacent to project reach. No more than one major road proposed in 10 year DOT plans. No roads in or adjacent to project reach. No proposed roads in 10 year DOT plans.G 5 Percent Forested (Hydrology)<= 20%>20% and <70%>=70%P 6 Riparian Vegetation (Geomorphology)<50% of contributing stream length has > 25 ft corridor width 50-80% of contributing stream length has > 25 ft corridor width >80% of contributing stream length has > 25 ft corridor width P 7 Sediment Supply (Geomorphology)High sediment supply from upstream bank erosion and surface runoff Moderate sediment supply from upstream bank erosion and surface runoff Low sediment supply. Upstream bank erosion and surface runoff is minimal G 8 Located on or downstream of a 303(d) listed stream TMDL list (Physicochemical) On, upstream, or downstream of 303(d) and no TMDL/WS Mgmt plan to address deficiencies On, upstream, or downstream of 303(d) and TMDL/WS Mgmt plan addressing deficiencies Not on 303(d) list G 9 Agricultural Land Use (Physicochemical)Livestock access to stream and/or intensive cropland immediately upstream of project reach. Livestock access to stream and/or intensive cropland upstream of project reach. A sufficient reach of stream is between Ag. land use and project reach. There is little to no agricultural land uses or the livestock or cropland is far enough away from project reach to cause no impact to water quality or biology. P 10 NPDES Permits (Physicochemical)Many NPDES permits within catchment or some within one mile of project reach A few NPDES permits within catchment and none within one mile of project reach No NPDES permits within catchment and none within one mile of project reach G 11 Specific Conductance (uS/cm at 25oC) (Physicochemical)Piedmont = >229; Blue Ridge = >66 Piedmont = 78-229; Blue Ridge = 41-66 Piedmont = <78; Blue Ridge = <41 - 12 Watershed impoundments (Biology) Impoundment(s) located within 1 mile upstream or downstream of project area and/or has a negative effect on project area and fish passage No impoundment within 1 mile upstream or downstream of project area OR impoundment does not adversely affect project area but a blockage could exist outside of 1 mile and impact fish passage No impoundment upstream or downstream of project area OR impoundment provides beneficial effect on project area and allows for fish passage G 13 Organism Recruitment (Biology)Channel immediately upstream or downstream of project reach is concrete, piped, or hardened. Channel immediately upstream or downstream of project reach has native bed and bank material, but is impaired. Channel immediately upstream or downstream of project reach has native bed and bank material.P 14 Percent of Catchment being Enhanced or Restored Less than 40% of the total catchment area is draining to the project reach. 40 to 60% of the total catchment area is draining to the project reach. Greater than 60% of the total catchment area is draining to the project reach.G 15 Other Categories Description of Catchment Condition Rating (P/F/G) Catchment Assessment Form Overall Catchment Condition CATCHMENT ASSESSMENT Restoration Potential Purpose: This form is used to determine the project's restoration potential. Version 2.0 Catchment Assessment Form 1 of 1 12-28-2016 Project Name: Horne Creek Tribs Reach ID: R4B Restoration Potential:Level 3 ‐ Geomorphology Existing Stream Type: G Proposed Stream Type: Bc Exisiting Condition Score (ECS) 0.24 Existing BMP Functional Feet Score (FFS) 0 Region: Piedmont Proposed Condition Score (PCS)0.49 Proposed BMP Functional Feet Score (FFS)0 Drainage Area (sqmi):0.003 Change in Functional Condition (PCS ‐ ECS)0.25 Proposed BMP FFS ‐ Existing BMP FFS 0 Proposed Bed Material:Gravel Percent Condition Change 104% Functional Change (%) Existing Stream Length (ft) 89 Existing Stream Length (ft)89 Proposed Stream Length (ft):152 Proposed Stream Length (ft)152 Stream Slope (%): 2.5 Additional Stream Length (ft) 63 Flow Type: Perennial Existing Functional Foot Score (FFS)21 Existing Stream FFS + Existing BMP FFS 21 River Basin: Yadkin‐PeeDee Proposed Functional Foot Score (FFS)74 Proposed Stream FFS + Proposed BMP FFS 74 Stream Temperature: Warmwater Proposed FFS ‐ Existing FFS 53 Total Proposed FFS ‐ Total Existing FFS 53 Data Collection Season: Summer Functional Change (%)249% Functional Change (%)252% Valley Type: Confined Alluvial Catchment Hydrology 0.36 0.36 Reach Runoff 0.63 0.74 Hydraulics Floodplain Connectivity 0.37 1.00 Large Woody Debris Lateral Stability 0.60 1.00 Riparian Vegetation 0.50 0.70 Bed Material 0.58 1.00 Bed Form Diversity 0.00 1.00 Plan Form 0.00 0.70 Temperature Bacteria Organic Matter Nitrogen Phosphorus Macros Fish Functional Category Function‐Based Parameters Field Value Index Value Parameter Category Category Overall Overall Catchment Hydrology Curve Number 68 0.36 0.36 Curve Number 58 0.63 Concentrated Flow Points Soil Compaction Bank Height Ratio 4.3 0 Entrenchment Ratio 1.5 0.74 LWD Index # Pieces Erosion Rate (ft/yr) Dominant BEHI/NBS M/L 0.6 Percent Streambank Erosion (%) Left Canopy Coverage (%) 60 0.69 Right Canopy Coverage (%)60 0.69 Left Buffer Width (ft)30 0.7 Right Buffer Width (ft)30 0.7 Left Basal Area (sq.ft/acre) Right Basal Area (sq.ft/acre) Left Stem Density (stems/acre)50 0.1 Right Stem Density (stems/acre)50 0.1 Bed Material Characterization Size Class Pebble Count Analyzer (p‐value)0.09 0.58 0.58 Pool Spacing Ratio Pool Depth Ratio 10 Percent Riffle 90 0 Aggradation Ratio Plan Form Sinuosity 1.02 0 0.00 Temperature Summer Daily Maximum  (°F) Bacteria Fecal Coliform (Cfu/100 ml) Leaf Litter Processing Rate Percent Shredders Nitrogen Total Nitrogen (mg/L) Phosphorus Total Phosphorus (mg/L) Biotic Index EPT Taxa Present Fish North Carolina Index of Biotic Integrity Functional Category Function‐Based Parameters Field Value Index Value Parameter Category Category Overall Overall Catchment Hydrology Curve Number 68 0.36 0.36 Curve Number 53 0.74 Concentrated Flow Points Soil Compaction Bank Height Ratio 11 Entrenchment Ratio 2.2 1 LWD Index # Pieces Erosion Rate (ft/yr) Dominant BEHI/NBS L/L 1 Percent Streambank Erosion (%) Left Canopy Coverage (%) 100 1 Right Canopy Coverage (%)100 1 Left Buffer Width (ft)30 0.7 Right Buffer Width (ft)30 0.7 Left Basal Area (sq.ft/acre) Right Basal Area (sq.ft/acre) Left Stem Density (stems/acre)210 0.4 Right Stem Density (stems/acre)210 0.4 Bed Material Characterization Size Class Pebble Count Analyzer (p‐value)0.7 1 1.00 Pool Spacing Ratio Pool Depth Ratio 21 Percent Riffle 60 1 Aggradation Ratio Plan Form Sinuosity 1.15 0.7 0.70 Temperature Summer Daily Maximum  (°F) Bacteria Fecal Coliform (Cfu/100 ml) Leaf Litter Processing Rate Percent Shredders Nitrogen Total Nitrogen (mg/L) Phosphorus Total Phosphorus (mg/L) Biotic Index EPT Taxa Present Fish North Carolina Index of Biotic Integrity Functioning Biology Organic CarbonPhysicochemical Roll Up Scoring Functioning 0.88 Large Woody Debris Bed Form Diversity 0.00 Bed Form Diversity 1.00 Hydraulics Floodplain Connectivity Geomorphology Lateral Stability Riparian Vegetation PROPOSED CONDITION ASSESSMENT 0.70 Hydrology 1.00 Macros Physicochemical Organic Carbon Biology Macros 1.00 1.00 Functioning At Risk 0.24 0.34 Functioning At Risk 0.63 Reach Runoff 0.74 0.60 0.55 Functioning At Risk 0.49 Measurement Method Hydraulics 1. Users input values that are highlighted based on restoration potential 2. Users select values from a pull‐down menu Functional Category   EXISTING CONDITION ASSESSMENT Hydrology 0.34 0.88 PCS 1.00 Geomorphology ECS Site Information and  Performance Standard Stratification Notes 0.50 Functioning At Risk Hydrology Geomorphology Physicochemical Biology FUNCTIONAL FEET (FF) SUMMARY 3. Leave values blank for field values that were not measured BMP FUNCTIONAL CHANGE SUMMARY FUNCTION BASED PARAMETERS SUMMARY FUNCTIONAL CHANGE SUMMARY Function‐Based Parameters Geomorphology Floodplain Connectivity Lateral Stability Riparian Vegetation FUNCTIONAL CATEGORY REPORT CARD 0.05 0.63 0.54 Measurement Method 0.50 Roll Up Scoring Not Functioning Hydrology 0.50 0.55 Hydraulics 0.37 Functional ChangeProposed ParameterExisting ParameterFunctional Category Large Woody Debris 0.37 Functioning At Risk0.37 Reach Runoff Physicochemical Biology Horne CrTribs-R5 Rater(s): KMV Date: 5/9/18 F Level 5 - Biology Poor Fair Good 1 Concentrated Flow (Hydrology) Potential for concentrated flow/impairments immediately upstream of the project and no treatments are in place Some potential for concentrated flow/impairments to reach restoration site, however, measures are in place to protect resources No potential for concentrated flow/impairments from adjacent land use G 2 Impervious cover (Hydrology)Greater than 25% Between 10% and 25%Less than 10% G 3 Land Use Change (Hydrology)Rapidly urbanizing/urban Single family homes/suburban Rural communities/slow growth or primarily forested G 4 Distance to Roads (Hydrology) Roads located in or adjacent to project reach and/or major roads proposed in 10 year DOT plans No roads in or adjacent to project reach. No more than one major road proposed in 10 year DOT plans. No roads in or adjacent to project reach. No proposed roads in 10 year DOT plans.G 5 Percent Forested (Hydrology)<= 20%>20% and <70%>=70%P 6 Riparian Vegetation (Geomorphology)<50% of contributing stream length has > 25 ft corridor width 50-80% of contributing stream length has > 25 ft corridor width >80% of contributing stream length has > 25 ft corridor width P 7 Sediment Supply (Geomorphology)High sediment supply from upstream bank erosion and surface runoff Moderate sediment supply from upstream bank erosion and surface runoff Low sediment supply. Upstream bank erosion and surface runoff is minimal G 8 Located on or downstream of a 303(d) listed stream TMDL list (Physicochemical) On, upstream, or downstream of 303(d) and no TMDL/WS Mgmt plan to address deficiencies On, upstream, or downstream of 303(d) and TMDL/WS Mgmt plan addressing deficiencies Not on 303(d) list G 9 Agricultural Land Use (Physicochemical)Livestock access to stream and/or intensive cropland immediately upstream of project reach. Livestock access to stream and/or intensive cropland upstream of project reach. A sufficient reach of stream is between Ag. land use and project reach. There is little to no agricultural land uses or the livestock or cropland is far enough away from project reach to cause no impact to water quality or biology. P 10 NPDES Permits (Physicochemical)Many NPDES permits within catchment or some within one mile of project reach A few NPDES permits within catchment and none within one mile of project reach No NPDES permits within catchment and none within one mile of project reach G 11 Specific Conductance (uS/cm at 25oC) (Physicochemical)Piedmont = >229; Blue Ridge = >66 Piedmont = 78-229; Blue Ridge = 41-66 Piedmont = <78; Blue Ridge = <41 - 12 Watershed impoundments (Biology) Impoundment(s) located within 1 mile upstream or downstream of project area and/or has a negative effect on project area and fish passage No impoundment within 1 mile upstream or downstream of project area OR impoundment does not adversely affect project area but a blockage could exist outside of 1 mile and impact fish passage No impoundment upstream or downstream of project area OR impoundment provides beneficial effect on project area and allows for fish passage G 13 Organism Recruitment (Biology)Channel immediately upstream or downstream of project reach is concrete, piped, or hardened. Channel immediately upstream or downstream of project reach has native bed and bank material, but is impaired. Channel immediately upstream or downstream of project reach has native bed and bank material.F 14 Percent of Catchment being Enhanced or Restored Less than 40% of the total catchment area is draining to the project reach. 40 to 60% of the total catchment area is draining to the project reach. Greater than 60% of the total catchment area is draining to the project reach.G 15 Other Categories Description of Catchment Condition Rating (P/F/G) Catchment Assessment Form Overall Catchment Condition CATCHMENT ASSESSMENT Restoration Potential Purpose: This form is used to determine the project's restoration potential. Version 2.0 Catchment Assessment Form 1 of 1 12-28-2016 Project Name: Horne Creek Tribs Reach ID: R5 Restoration Potential:Level 5 ‐ Biology Existing Stream Type: Gc Proposed Stream Type: Bc Exisiting Condition Score (ECS) 0.38 Existing BMP Functional Feet Score (FFS) 0 Region: Piedmont Proposed Condition Score (PCS)0.90 Proposed BMP Functional Feet Score (FFS)0 Drainage Area (sqmi):0.26 Change in Functional Condition (PCS ‐ ECS)0.52 Proposed BMP FFS ‐ Existing BMP FFS 0 Proposed Bed Material:Gravel Percent Condition Change 137% Functional Change (%) Existing Stream Length (ft) 2519 Existing Stream Length (ft)2519 Proposed Stream Length (ft):2293 Proposed Stream Length (ft)2293 Stream Slope (%): 1.9 Additional Stream Length (ft) ‐226 Flow Type: Perennial Existing Functional Foot Score (FFS)957 Existing Stream FFS + Existing BMP FFS 957 River Basin: Yadkin‐PeeDee Proposed Functional Foot Score (FFS)2064 Proposed Stream FFS + Proposed BMP FFS 2064 Stream Temperature: Warmwater Proposed FFS ‐ Existing FFS 1106 Total Proposed FFS ‐ Total Existing FFS 1107 Data Collection Season: Summer Functional Change (%)116% Functional Change (%)116% Valley Type: Unconfined Alluvial Catchment Hydrology 0.36 0.36 Reach Runoff 0.63 0.74 Hydraulics Floodplain Connectivity 0.25 1.00 Large Woody Debris Lateral Stability 0.60 1.00 Riparian Vegetation 0.16 0.70 Bed Material 0.29 1.00 Bed Form Diversity 0.80 1.00 Plan Form 1.00 1.00 Temperature Bacteria Organic Matter 0.00 1.00 Nitrogen Phosphorus Macros 0.58 1.00 Fish Functional Category Function‐Based Parameters Field Value Index Value Parameter Category Category Overall Overall Catchment Hydrology Curve Number 68 0.36 0.36 Curve Number 58 0.63 Concentrated Flow Points Soil Compaction Bank Height Ratio 3.9 0 Entrenchment Ratio 1.3 0.5 LWD Index # Pieces Erosion Rate (ft/yr) Dominant BEHI/NBS M/L 0.6 Percent Streambank Erosion (%) Left Canopy Coverage (%) 20 0.24 Right Canopy Coverage (%)20 0.24 Left Buffer Width (ft)10 0.23 Right Buffer Width (ft)10 0.23 Left Basal Area (sq.ft/acre) Right Basal Area (sq.ft/acre) Left Stem Density (stems/acre)5 0.01 Right Stem Density (stems/acre)5 0.01 Bed Material Characterization Size Class Pebble Count Analyzer (p‐value)0.05 0.29 0.29 Pool Spacing Ratio 4 0.7 Pool Depth Ratio 1.5 0.69 Percent Riffle 70 1 Aggradation Ratio Plan Form Sinuosity 1.3 1 1.00 Temperature Summer Daily Maximum  (°F) Bacteria Fecal Coliform (Cfu/100 ml) Leaf Litter Processing Rate Percent Shredders 00 Nitrogen Total Nitrogen (mg/L) Phosphorus Total Phosphorus (mg/L) Biotic Index 4.99 0.79 EPT Taxa Present 15 0.36 Fish North Carolina Index of Biotic Integrity Functional Category Function‐Based Parameters Field Value Index Value Parameter Category Category Overall Overall Catchment Hydrology Curve Number 68 0.36 0.36 Curve Number 53 0.74 Concentrated Flow Points Soil Compaction Bank Height Ratio 11 Entrenchment Ratio 2.2 1 LWD Index # Pieces Erosion Rate (ft/yr) Dominant BEHI/NBS L/L 1 Percent Streambank Erosion (%) Left Canopy Coverage (%) 100 1 Right Canopy Coverage (%)100 1 Left Buffer Width (ft)30 0.7 Right Buffer Width (ft)30 0.7 Left Basal Area (sq.ft/acre) Right Basal Area (sq.ft/acre) Left Stem Density (stems/acre)210 0.4 Right Stem Density (stems/acre)210 0.4 Bed Material Characterization Size Class Pebble Count Analyzer (p‐value)0.7 1 1.00 Pool Spacing Ratio 0.7 1 Pool Depth Ratio 21 Percent Riffle 70 1 Aggradation Ratio Plan Form Sinuosity 1.25 1 1.00 Temperature Summer Daily Maximum  (°F) Bacteria Fecal Coliform (Cfu/100 ml) Leaf Litter Processing Rate Percent Shredders 12 1 Nitrogen Total Nitrogen (mg/L) Phosphorus Total Phosphorus (mg/L) Biotic Index 4.3 1 EPT Taxa Present 28 1 Fish North Carolina Index of Biotic Integrity Large Woody Debris 0.25 Not Functioning0.25 Reach Runoff Physicochemical 0.00 1.00 1.00 Biology 0.58 1.00 0.42 FUNCTIONAL CHANGE SUMMARY Function‐Based Parameters Geomorphology Floodplain Connectivity Lateral Stability Riparian Vegetation FUNCTIONAL CATEGORY REPORT CARD 0.05 0.75 0.37 Measurement Method 0.16 Roll Up Scoring Functioning At Risk Hydrology 0.50 0.55 Hydraulics 0.25 Functional ChangeProposed ParameterExisting ParameterFunctional Category Hydraulics 1. Users input values that are highlighted based on restoration potential 2. Users select values from a pull‐down menu Functional Category   EXISTING CONDITION ASSESSMENT Hydrology 0.57 0.94 PCS 1.00 Geomorphology ECS Site Information and  Performance Standard Stratification Notes 0.50 Functioning At Risk Hydrology Geomorphology Physicochemical Biology FUNCTIONAL FEET (FF) SUMMARY 3. Leave values blank for field values that were not measured BMP FUNCTIONAL CHANGE SUMMARY FUNCTION BASED PARAMETERS SUMMARY 1.00 1.00 0.00 0.58 Functioning At Risk 0.38 0.57 Functioning At Risk 0.00 0.58 Functioning At Risk 0.63 Reach Runoff 0.74 0.60 0.55 Functioning At Risk 0.90 Measurement Method 1.00Physicochemical Organic Carbon Biology Macros 1.00 Bed Form Diversity 0.80 Bed Form Diversity 1.00 Hydraulics Floodplain Connectivity Geomorphology Lateral Stability Riparian Vegetation PROPOSED CONDITION ASSESSMENT 0.70 Hydrology 1.00 Macros Functioning 1.00 Functioning 1.00 Not Functioning Biology Organic CarbonPhysicochemical Roll Up Scoring Functioning 0.94 Functioning Large Woody Debris Design Parameters R1Appendix 2Parameter MIN MAXStream Length (ft)Drainage Area, DA (sq mi)37.504Stream Type (Rosgen)Bankfull Discharge, Qbkf (cfs)Calculated from analysis of USGS regression eq., velocity/discharge calcsBankfull Riffle XSEC Area, Abkf (sq ft)Calcuated from Riffle TabBankfull Mean Velocity, Vbkf (ft/s)C-channel 3.5-5, B-channel 4-6Bankfull Riffle Width, Wbkf (ft)Bankfull Mean Depth, Dbkf (ft)Width to Depth Ratio, W/D (ft/ft)C-channel 10-14, B-channel 12-18Width of Floodprone Area, Wfpa (ft)28.00 65.00Must be greater than this value to not be entrenchedEntrenchment Ratio, Wfpa/Wbkf (ft/ft)4.00 9.29> 2.2 Not entrenchedRiffle Max Depth @ bkf, Dmax (ft)Riffle Max Depth Ratio, Dmax/Dbkf (ft/ft)C-channel 1.1-1.3, B-channel 1.2-1.4Max Depth @ tob, Dmaxtob (ft)Bank Height Ratio, Dmaxtob/Dmax (ft/ft)C-channel 1.0-1.1, B-channel 1.0-1.1Meander Wavelength, Lm (ft)*49.00 84.00NAMeander Wavelength Ratio, Lm/Wbkf (ft/ft)*7.00 12.00C-channel 7.0-12.0Radius of Curvature, Rc (ft)* 14.00 21.00NARc Ratio, Rc/Wbkf (ft/ft)*2.00 3.00C-channel 2.0-3.0 (not applicable for B-channel)Belt Width, Wblt (ft)*24.50 56.00NAMeander Width Ratio, Wblt/Wbkf (ft/ft)*3.50 8.00C-channel 3.5-8.0 (not applicable for B-channel)Sinuosity, K (Sval/Schan) C-channel between 1.2-1.6, B-channel 1.1-1.2Valley Slope, Sval (ft/ft)C-channel 0.005-0.015, B-channel 0.020-0.030Channel Slope, Schan (ft/ft) Calculated from valley slope and sinuosityRiffle Slope, Srif0.0376 0.0615Riffle Slope Ratio, Srif/Schan 1.10 1.80C-channel between 1.5-2.0, B-channel 1.1-1.8Pool Slope, Spool (ft/ft)0.0000 0.0137Pool Slope Ratio, Spool/Schan0.00 0.40C-channel 0.0-0.2, B-channel 0.0-0.4Pool Max Depth @ bkf, Dmaxpool (ft)0.83 1.44Pool Max Depth Ratio, Dmaxpool/Dbkf (ft/ft)2.00 3.50C-channel 2.0-3.5, B-channel 2.0-3.5Pool Width, Wpool (ft)7.70 10.50Pool Width Ratio, Wpool/Wbkf (ft/ft)1.10 1.50C-channel 1.3-1.7, B-channel 1.1-1.5Pool Spacing, Lps (ft)10.50 35.00Pool-Pool Spacing Ratio, Lps/Wbkf (ft/ft)1.50 5.00C-channel 4.0-7.0, B-channel 1.5-5.0NotesHorne Creek Reach 12.894.167.00Proposed Stream Values (Restoration)13220.0586B412.000.4116.970.551.330.550.03660.0341* Only applicable for C and E type channels.1.001.07 Design Parameters R2Appendix 2Parameter MIN MAXStream Length (ft)Drainage Area, DA (sq mi)41.088Stream Type (Rosgen)Bankfull Discharge, Qbkf (cfs)Calculated from analysis of USGS regression eq., velocity/discharge calcsBankfull Riffle XSEC Area, Abkf (sq ft)Calcuated from Riffle TabBankfull Mean Velocity, Vbkf (ft/s)C-channel 3.5-5, B-channel 4-6Bankfull Riffle Width, Wbkf (ft)Bankfull Mean Depth, Dbkf (ft)Width to Depth Ratio, W/D (ft/ft)C-channel 10-14, B-channel 12-18Width of Floodprone Area, Wfpa (ft)15.00 19.00Must be greater than this value to not be entrenchedEntrenchment Ratio, Wfpa/Wbkf (ft/ft)2.50 3.17> 2.2 Not entrenchedRiffle Max Depth @ bkf, Dmax (ft)Riffle Max Depth Ratio, Dmax/Dbkf (ft/ft)C-channel 1.1-1.3, B-channel 1.2-1.4Max Depth @ tob, Dmaxtob (ft)Bank Height Ratio, Dmaxtob/Dmax (ft/ft)C-channel 1.0-1.1, B-channel 1.0-1.1Meander Wavelength, Lm (ft)*42.00 72.00NAMeander Wavelength Ratio, Lm/Wbkf (ft/ft)*7.00 12.00C-channel 7.0-12.0Radius of Curvature, Rc (ft)* 12.00 18.00NARc Ratio, Rc/Wbkf (ft/ft)* 2.00 3.00C-channel 2.0-3.0 (not applicable for B-channel)Belt Width, Wblt (ft)* 21.00 48.00NAMeander Width Ratio, Wblt/Wbkf (ft/ft)* 3.50 8.00C-channel 3.5-8.0 (not applicable for B-channel)Sinuosity, K (Sval/Schan) C-channel between 1.2-1.6, B-channel 1.1-1.2Valley Slope, Sval (ft/ft)C-channel 0.005-0.015, B-channel 0.020-0.030Channel Slope, Schan (ft/ft) Calculated from valley slope and sinuosityRiffle Slope, Srif0.0332 0.0543Riffle Slope Ratio, Srif/Schan 1.10 1.80C-channel between 1.5-2.0, B-channel 1.1-1.8Pool Slope, Spool (ft/ft)0.0000 0.0121Pool Slope Ratio, Spool/Schan0.00 0.40C-channel 0.0-0.2, B-channel 0.0-0.4Pool Max Depth @ bkf, Dmaxpool (ft)0.92 1.60Pool Max Depth Ratio, Dmaxpool/Dbkf (ft/ft)2.00 3.50C-channel 2.0-3.5, B-channel 2.0-3.5Pool Width, Wpool (ft)6.60 9.00Pool Width Ratio, Wpool/Wbkf (ft/ft)1.10 1.50C-channel 1.3-1.7, B-channel 1.1-1.5Pool Spacing, Lps (ft)9.00 30.00Pool-Pool Spacing Ratio, Lps/Wbkf (ft/ft)1.50 5.00C-channel 4.0-7.0, B-channel 1.5-5.00.03250.0302* Only applicable for C and E type channels.1.001.080.4613.090.551.200.556.00Proposed Stream Values (Restoration)2960.0642B412.00NotesHorne Creek Reach 22.754.36 Design Parameters R3Appendix 2Parameter MIN MAXStream Length (ft)Drainage Area, DA (sq mi)29.44Stream Type (Rosgen)Bankfull Discharge, Qbkf (cfs)Calculated from analysis of USGS regression eq., velocity/discharge calcsBankfull Riffle XSEC Area, Abkf (sq ft)Calcuated from Riffle TabBankfull Mean Velocity, Vbkf (ft/s)C-channel 3.5-5, B-channel 4-6Bankfull Riffle Width, Wbkf (ft)Bankfull Mean Depth, Dbkf (ft)Width to Depth Ratio, W/D (ft/ft)C-channel 10-14, B-channel 12-18Width of Floodprone Area, Wfpa (ft)20.00 34.00Entrenchment Ratio, Wfpa/Wbkf (ft/ft)3.33 5.67> 2.2 Not entrenchedRiffle Max Depth @ bkf, Dmax (ft)Riffle Max Depth Ratio, Dmax/Dbkf (ft/ft)C-channel 1.1-1.3, B-channel 1.2-1.4Max Depth @ tob, Dmaxtob (ft)Bank Height Ratio, Dmaxtob/Dmax (ft/ft)C-channel 1.0-1.1, B-channel 1.0-1.1Meander Wavelength, Lm (ft)*42.00 72.00NaMeander Wavelength Ratio, Lm/Wbkf (ft/ft)*7.00 12.00C-channel 7.0-12.0Radius of Curvature, Rc (ft)* 12.00 18.00NaRc Ratio, Rc/Wbkf (ft/ft)* 2.00 3.00C-channel 2.0-3.0 (not applicable for B-channel)Belt Width, Wblt (ft)* 21.00 48.00NaMeander Width Ratio, Wblt/Wbkf (ft/ft)* 3.50 8.00C-channel 3.5-8.0 (not applicable for B-channel)Sinuosity, K (Sval/Schan) C-channel between 1.2-1.6, B-channel 1.1-1.2Valley Slope, Sval (ft/ft)C-channel 0.005-0.015, B-channel 0.020-0.030Channel Slope, Schan (ft/ft) Calculated from valley slope and sinuosityRiffle Slope, Srif0.0510 0.0835Riffle Slope Ratio, Srif/Schan 1.10 1.80C-channel between 1.5-2.0, B-channel 1.1-1.8Pool Slope, Spool (ft/ft)0.0000 0.0186Pool Slope Ratio, Spool/Schan0.00 0.40C-channel 0.0-0.2, B-channel 0.0-0.4Pool Max Depth @ bkf, Dmaxpool (ft)0.75 1.31Pool Max Depth Ratio, Dmaxpool/Dbkf (ft/ft)2.00 3.50C-channel 2.0-3.5, B-channel 2.0-3.5Pool Width, Wpool (ft)6.60 9.00Pool Width Ratio, Wpool/Wbkf (ft/ft)1.10 1.50C-channel 1.3-1.7, B-channel 1.1-1.5Pool Spacing, Lps (ft)9.00 30.00Pool-Pool Spacing Ratio, Lps/Wbkf (ft/ft)1.50 5.00C-channel 4.0-7.0, B-channel 1.5-5.0NotesHorne Creek Reach 32.254.446.00Proposed Stream Values (Restoration)1540.046B4a10.000.3816.000.501.330.500.04960.0464* Only applicable for C and E type channels.1.001.07 Design Parameters R4Appendix 2Parameter MIN MAXStream Length (ft)Drainage Area, DA (sq mi)83.2Stream Type (Rosgen)Bankfull Discharge, Qbkf (cfs)Calculated from analysis of USGS regression eq., velocity/discharge calcsBankfull Riffle XSEC Area, Abkf (sq ft)Calcuated from Riffle TabBankfull Mean Velocity, Vbkf (ft/s)C-channel 3.5-5, B-channel 4-6Bankfull Riffle Width, Wbkf (ft)Bankfull Mean Depth, Dbkf (ft)Width to Depth Ratio, W/D (ft/ft)C-channel 10-14, B-channel 12-18Width of Floodprone Area, Wfpa (ft)38.00 79.00Must be greater than this value to not be entrenchedEntrenchment Ratio, Wfpa/Wbkf (ft/ft)4.22 8.78> 2.2 Not entrenchedRiffle Max Depth @ bkf, Dmax (ft)Riffle Max Depth Ratio, Dmax/Dbkf (ft/ft)C-channel 1.1-1.3, B-channel 1.2-1.4Max Depth @ tob, Dmaxtob (ft)Bank Height Ratio, Dmaxtob/Dmax (ft/ft)C-channel 1.0-1.1, B-channel 1.0-1.1Meander Wavelength, Lm (ft)*63.00 108.00Meander Wavelength Ratio, Lm/Wbkf (ft/ft)*7.00 12.00C-channel 7.0-12.0Radius of Curvature, Rc (ft)* 18.00 27.00Rc Ratio, Rc/Wbkf (ft/ft)* 2.00 3.00C-channel 2.0-3.0 (not applicable for B-channel)Belt Width, Wblt (ft)* 31.50 72.00Meander Width Ratio, Wblt/Wbkf (ft/ft)* 3.50 8.00C-channel 3.5-8.0 (not applicable for B-channel)Sinuosity, K (Sval/Schan) C-channel between 1.2-1.6, B-channel 1.1-1.2Valley Slope, Sval (ft/ft)C-channel 0.005-0.015, B-channel 0.020-0.030Channel Slope, Schan (ft/ft) Calculated from valley slope and sinuosityRiffle Slope, Srif0.0319 0.0522Riffle Slope Ratio, Srif/Schan 1.10 1.80C-channel between 1.5-2.0, B-channel 1.1-1.8Pool Slope, Spool (ft/ft)0.0000 0.0116Pool Slope Ratio, Spool/Schan0.00 0.40C-channel 0.0-0.2, B-channel 0.0-0.4Pool Max Depth @ bkf, Dmaxpool (ft)1.16 2.02Pool Max Depth Ratio, Dmaxpool/Dbkf (ft/ft)2.00 3.50C-channel 2.0-3.5, B-channel 2.0-3.5Pool Width, Wpool (ft)9.90 13.50Pool Width Ratio, Wpool/Wbkf (ft/ft)1.10 1.50C-channel 1.3-1.7, B-channel 1.1-1.5Pool Spacing, Lps (ft)13.50 45.00Pool-Pool Spacing Ratio, Lps/Wbkf (ft/ft)1.50 5.00C-channel 4.0-7.0, B-channel 1.5-5.0NotesHorne Creek Reach 45.204.239.00Proposed Stream Values (Restoration)12820.13B4/C4b22.000.5815.580.801.380.800.03810.0290* Only applicable for C and E type channels.1.001.31 Design Parameters R4aAppendix 2Parameter MIN MAXStream Length (ft)Drainage Area, DA (sq mi)28.8Stream Type (Rosgen)Bankfull Discharge, Qbkf (cfs)Calculated from analysis of USGS regression eq., velocity/discharge calcsBankfull Riffle XSEC Area, Abkf (sq ft)Calcuated from Riffle TabBankfull Mean Velocity, Vbkf (ft/s)C-channel 3.5-5, B-channel 4-6Bankfull Riffle Width, Wbkf (ft)Bankfull Mean Depth, Dbkf (ft)Width to Depth Ratio, W/D (ft/ft)C-channel 10-14, B-channel 12-18Width of Floodprone Area, Wfpa (ft)25.00 46.00Entrenchment Ratio, Wfpa/Wbkf (ft/ft)4.17 7.67> 2.2 Not entrenchedRiffle Max Depth @ bkf, Dmax (ft)Riffle Max Depth Ratio, Dmax/Dbkf (ft/ft)C-channel 1.1-1.3, B-channel 1.2-1.4Max Depth @ tob, Dmaxtob (ft)Bank Height Ratio, Dmaxtob/Dmax (ft/ft)C-channel 1.0-1.1, B-channel 1.0-1.1Meander Wavelength, Lm (ft)*42.00 72.00NaMeander Wavelength Ratio, Lm/Wbkf (ft/ft)*7.00 12.00C-channel 7.0-12.0Radius of Curvature, Rc (ft)* 12.00 18.00NaRc Ratio, Rc/Wbkf (ft/ft)* 2.00 3.00C-channel 2.0-3.0 (not applicable for B-channel)Belt Width, Wblt (ft)* 21.00 48.00NaMeander Width Ratio, Wblt/Wbkf (ft/ft)* 3.50 8.00C-channel 3.5-8.0 (not applicable for B-channel)Sinuosity, K (Sval/Schan) C-channel between 1.2-1.6, B-channel 1.1-1.2Valley Slope, Sval (ft/ft)C-channel 0.005-0.015, B-channel 0.020-0.030Channel Slope, Schan (ft/ft) Calculated from valley slope and sinuosityRiffle Slope, Srif0.0226 0.0369Riffle Slope Ratio, Srif/Schan 1.10 1.80C-channel between 1.5-2.0, B-channel 1.1-1.8Pool Slope, Spool (ft/ft)0.0000 0.0082Pool Slope Ratio, Spool/Schan0.00 0.40C-channel 0.0-0.2, B-channel 0.0-0.4Pool Max Depth @ bkf, Dmaxpool (ft)0.75 1.31Pool Max Depth Ratio, Dmaxpool/Dbkf (ft/ft)2.00 3.50C-channel 2.0-3.5, B-channel 2.0-3.5Pool Width, Wpool (ft)6.60 9.00Pool Width Ratio, Wpool/Wbkf (ft/ft)1.10 1.50C-channel 1.3-1.7, B-channel 1.1-1.5Pool Spacing, Lps (ft)9.00 30.00Pool-Pool Spacing Ratio, Lps/Wbkf (ft/ft)1.50 5.00C-channel 4.0-7.0, B-channel 1.5-5.00.02330.0205* Only applicable for C and E type channels.1.001.140.3816.000.501.330.506.00Proposed Stream Values (Restoration)1670.045B4c10.00NotesHorne Creek Reach 4A2.254.44 Design Parameters R4bAppendix 2Parameter MIN MAXStream Length (ft)Drainage Area, DA (sq mi)1.664Stream Type (Rosgen)Bankfull Discharge, Qbkf (cfs)Calculated from analysis of USGS regression eq., velocity/discharge calcsBankfull Riffle XSEC Area, Abkf (sq ft)Calcuated from Riffle TabBankfull Mean Velocity, Vbkf (ft/s)C-channel 3.5-5, B-channel 4-6Bankfull Riffle Width, Wbkf (ft)Bankfull Mean Depth, Dbkf (ft)Width to Depth Ratio, W/D (ft/ft)C-channel 10-14, B-channel 12-18Width of Floodprone Area, Wfpa (ft)8.00 46.00Entrenchment Ratio, Wfpa/Wbkf (ft/ft)2.29 13.14> 2.2 Not entrenchedRiffle Max Depth @ bkf, Dmax (ft)Riffle Max Depth Ratio, Dmax/Dbkf (ft/ft)C-channel 1.1-1.3, B-channel 1.2-1.4Max Depth @ tob, Dmaxtob (ft)Bank Height Ratio, Dmaxtob/Dmax (ft/ft)C-channel 1.0-1.1, B-channel 1.0-1.1Meander Wavelength, Lm (ft)*24.50 42.00NaMeander Wavelength Ratio, Lm/Wbkf (ft/ft)*7.00 12.00C-channel 7.0-12.0Radius of Curvature, Rc (ft)* 7.00 10.50NaRc Ratio, Rc/Wbkf (ft/ft)* 2.00 3.00C-channel 2.0-3.0 (not applicable for B-channel)Belt Width, Wblt (ft)* 12.25 28.00NaMeander Width Ratio, Wblt/Wbkf (ft/ft)* 3.50 8.00C-channel 3.5-8.0 (not applicable for B-channel)Sinuosity, K (Sval/Schan) C-channel between 1.2-1.6, B-channel 1.1-1.2Valley Slope, Sval (ft/ft)C-channel 0.005-0.015, B-channel 0.020-0.030Channel Slope, Schan (ft/ft) Calculated from valley slope and sinuosityRiffle Slope, Srif0.0265 0.0433Riffle Slope Ratio, Srif/Schan 1.10 1.80C-channel between 1.5-2.0, B-channel 1.1-1.8Pool Slope, Spool (ft/ft)0.0000 0.0096Pool Slope Ratio, Spool/Schan0.00 0.40C-channel 0.0-0.2, B-channel 0.0-0.4Pool Max Depth @ bkf, Dmaxpool (ft)0.47 0.83Pool Max Depth Ratio, Dmaxpool/Dbkf (ft/ft)2.00 3.50C-channel 2.0-3.5, B-channel 2.0-3.5Pool Width, Wpool (ft)3.85 5.25Pool Width Ratio, Wpool/Wbkf (ft/ft)1.10 1.50C-channel 1.3-1.7, B-channel 1.1-1.5Pool Spacing, Lps (ft)5.25 17.50Pool-Pool Spacing Ratio, Lps/Wbkf (ft/ft)1.50 5.00C-channel 4.0-7.0, B-channel 1.5-5.0NotesHorne Creek Reach 4B0.833.643.50Proposed Stream Values (Restoration)1510.0026B43.000.2414.850.301.270.300.02620.0241* Only applicable for C and E type channels.1.001.09 Design Parameters R5Appendix 2Parameter MIN MAXStream Length (ft)Drainage Area, DA (sq mi)167.68Stream Type (Rosgen)Bankfull Discharge, Qbkf (cfs)Calculated from analysis of USGS regression eq., velocity/discharge calcsBankfull Riffle XSEC Area, Abkf (sq ft)Calcuated from Riffle TabBankfull Mean Velocity, Vbkf (ft/s)C-channel 3.5-5, B-channel 4-6Bankfull Riffle Width, Wbkf (ft)Bankfull Mean Depth, Dbkf (ft)Width to Depth Ratio, W/D (ft/ft)C-channel 10-14, B-channel 12-18Width of Floodprone Area, Wfpa (ft)54.00 134.00Entrenchment Ratio, Wfpa/Wbkf (ft/ft)5.40 13.40> 2.2 Not entrenchedRiffle Max Depth @ bkf, Dmax (ft)Riffle Max Depth Ratio, Dmax/Dbkf (ft/ft)C-channel 1.1-1.3, B-channel 1.2-1.4Max Depth @ tob, Dmaxtob (ft)Bank Height Ratio, Dmaxtob/Dmax (ft/ft)C-channel 1.0-1.1, B-channel 1.0-1.1Meander Wavelength, Lm (ft)*70.00 120.00Meander Wavelength Ratio, Lm/Wbkf (ft/ft)*7.00 12.00C-channel 7.0-12.0Radius of Curvature, Rc (ft)* 20.00 30.00Rc Ratio, Rc/Wbkf (ft/ft)* 2.00 3.00C-channel 2.0-3.0 (not applicable for B-channel)Belt Width, Wblt (ft)* 35.00 80.00Meander Width Ratio, Wblt/Wbkf (ft/ft)* 3.50 8.00C-channel 3.5-8.0 (not applicable for B-channel)Sinuosity, K (Sval/Schan) C-channel between 1.2-1.6, B-channel 1.1-1.2Valley Slope, Sval (ft/ft)C-channel 0.005-0.015, B-channel 0.020-0.030Channel Slope, Schan (ft/ft) Calculated from valley slope and sinuosityRiffle Slope, Srif0.0301 0.0401Riffle Slope Ratio, Srif/Schan 1.50 2.00C-channel between 1.5-2.0, B-channel 1.1-1.8Pool Slope, Spool (ft/ft)0.0000 0.0040Pool Slope Ratio, Spool/Schan0.00 0.20C-channel 0.0-0.2, B-channel 0.0-0.4Pool Max Depth @ bkf, Dmaxpool (ft)1.44 2.52Pool Max Depth Ratio, Dmaxpool/Dbkf (ft/ft)2.00 3.50C-channel 2.0-3.5, B-channel 2.0-3.5Pool Width, Wpool (ft)13.00 17.00Pool Width Ratio, Wpool/Wbkf (ft/ft)1.30 1.70C-channel 1.3-1.7, B-channel 1.1-1.5Pool Spacing, Lps (ft)15.00 70.00Pool-Pool Spacing Ratio, Lps/Wbkf (ft/ft)1.50 7.00C-channel 4.0-7.0, B-channel 1.5-5.0NotesHorne Creek Reach 57.203.7510.00Proposed Stream Values (Restoration)22950.26C427.000.7213.890.901.250.900.02430.0201* Only applicable for C and E type channels.1.001.21 Culvert Report Hydraflow Express Extension for Autodesk® AutoCAD® Civil 3D® by Autodesk, Inc. Friday, Oct 26 2018 R1 Culvert Crossing Invert Elev Dn (ft) = 934.62 Pipe Length (ft) = 20.00 Slope (%) = 4.50 Invert Elev Up (ft) = 935.52 Rise (in) = 48.0 Shape = Circular Span (in) = 48.0 No. Barrels = 1 n-Value = 0.024 Culvert Type = Circular Corrugate Metal Pipe Culvert Entrance = Projecting Coeff. K,M,c,Y,k = 0.034, 1.5, 0.0553, 0.54, 0.9 Embankment Top Elevation (ft) = 940.00 Top Width (ft) = 12.00 Crest Width (ft) = 100.00 Calculations Qmin (cfs) = 25.10 Qmax (cfs) = 69.20 Tailwater Elev (ft) = (dc+D)/2 Highlighted Qtotal (cfs) = 69.10 Qpipe (cfs) = 69.10 Qovertop (cfs) = 0.00 Veloc Dn (ft/s) = 6.31 Veloc Up (ft/s) = 8.33 HGL Dn (ft) = 937.87 HGL Up (ft) = 938.03 Hw Elev (ft) = 939.64 Hw/D (ft) = 1.03 Flow Regime = Inlet Control Culvert Report Hydraflow Express Extension for Autodesk® AutoCAD® Civil 3D® by Autodesk, Inc. Friday, Apr 26 2019 R4 Upstream Culvert Crossing Invert Elev Dn (ft) = 974.63 Pipe Length (ft) = 20.00 Slope (%) = 2.80 Invert Elev Up (ft) = 975.19 Rise (in) = 48.0 Shape = Circular Span (in) = 48.0 No. Barrels = 1 n-Value = 0.024 Culvert Type = Circular Corrugate Metal Pipe Culvert Entrance = Projecting Coeff. K,M,c,Y,k = 0.034, 1.5, 0.0553, 0.54, 0.9 Embankment Top Elevation (ft) = 981.15 Top Width (ft) = 12.00 Crest Width (ft) = 100.00 Calculations Qmin (cfs) = 36.70 Qmax (cfs) = 77.50 Tailwater Elev (ft) = (dc+D)/2 Highlighted Qtotal (cfs) = 76.70 Qpipe (cfs) = 76.70 Qovertop (cfs) = 0.00 Veloc Dn (ft/s) = 6.87 Veloc Up (ft/s) = 8.68 HGL Dn (ft) = 977.95 HGL Up (ft) = 977.84 Hw Elev (ft) = 979.68 Hw/D (ft) = 1.12 Flow Regime = Inlet Control Culvert Report Hydraflow Express Extension for Autodesk® AutoCAD® Civil 3D® by Autodesk, Inc. Friday, Apr 26 2019 R4 Downstream Culvert Crossing Invert Elev Dn (ft) = 957.66 Pipe Length (ft) = 20.00 Slope (%) = 6.00 Invert Elev Up (ft) = 958.86 Rise (in) = 48.0 Shape = Circular Span (in) = 48.0 No. Barrels = 1 n-Value = 0.024 Culvert Type = Circular Corrugate Metal Pipe Culvert Entrance = Projecting Coeff. K,M,c,Y,k = 0.034, 1.5, 0.0553, 0.54, 0.9 Embankment Top Elevation (ft) = 964.86 Top Width (ft) = 12.00 Crest Width (ft) = 100.00 Calculations Qmin (cfs) = 36.70 Qmax (cfs) = 77.50 Tailwater Elev (ft) = (dc+D)/2 Highlighted Qtotal (cfs) = 76.70 Qpipe (cfs) = 76.70 Qovertop (cfs) = 0.00 Veloc Dn (ft/s) = 6.87 Veloc Up (ft/s) = 8.68 HGL Dn (ft) = 960.98 HGL Up (ft) = 961.51 Hw Elev (ft) = 963.29 Hw/D (ft) = 1.11 Flow Regime = Inlet Control Culvert Report Hydraflow Express Extension for Autodesk® AutoCAD® Civil 3D® by Autodesk, Inc. Friday, Apr 26 2019 R5 Culvert Crossing Invert Elev Dn (ft) = 940.13 Pipe Length (ft) = 20.00 Slope (%) = 4.50 Invert Elev Up (ft) = 941.03 Rise (in) = 60.0 Shape = Circular Span (in) = 60.0 No. Barrels = 1 n-Value = 0.024 Culvert Type = Circular Corrugate Metal Pipe Culvert Entrance = Projecting Coeff. K,M,c,Y,k = 0.034, 1.5, 0.0553, 0.54, 0.9 Embankment Top Elevation (ft) = 947.03 Top Width (ft) = 12.00 Crest Width (ft) = 100.00 Calculations Qmin (cfs) = 36.70 Qmax (cfs) = 118.00 Tailwater Elev (ft) = (dc+D)/2 Highlighted Qtotal (cfs) = 117.70 Qpipe (cfs) = 117.70 Qovertop (cfs) = 0.00 Veloc Dn (ft/s) = 6.91 Veloc Up (ft/s) = 9.22 HGL Dn (ft) = 944.18 HGL Up (ft) = 944.13 Hw Elev (ft) = 946.08 Hw/D (ft) = 1.01 Flow Regime = Inlet Control HEC‐RAS 2D Model Output                  Appendix 2  Reach 1 Existing 2D model Results      HEC‐RAS 2D Model Output                  Appendix 2   HEC‐RAS 2D Model Output                  Appendix 2     HEC‐RAS 2D Model Output                  Appendix 2   HEC‐RAS 2D Model Output                  Appendix 2      HEC‐RAS 2D Model Output                  Appendix 2     HEC‐RAS 2D Model Output                  Appendix 2      HEC‐RAS 2D Model Output                  Appendix 2     HEC‐RAS 2D Model Output                  Appendix 2     HEC‐RAS 2D Model Output                  Appendix 2     HEC‐RAS 2D Model Output                  Appendix 2 Reach 2, 4, and 5 Existing 2D model Results     HEC‐RAS 2D Model Output                  Appendix 2     HEC‐RAS 2D Model Output                  Appendix 2     HEC‐RAS 2D Model Output                  Appendix 2   HEC‐RAS 2D Model Output                  Appendix 2   R5 existing water surface     HEC‐RAS 2D Model Output                  Appendix 2 R5 existing velocity     HEC‐RAS 2D Model Output                  Appendix 2 R5 existing Depth     HEC‐RAS 2D Model Output                  Appendix 2 R4 existing water surface     HEC‐RAS 2D Model Output                  Appendix 2 R4 Velocity     HEC‐RAS 2D Model Output                  Appendix 2 R4 Depth     HEC‐RAS 2D Model Output                  Appendix 2 R2 Water Surface     HEC‐RAS 2D Model Output                  Appendix 2 R2 Velocity     HEC‐RAS 2D Model Output                  Appendix 2 R2 Depth     HEC‐RAS 2D Model Output                  Appendix 2 Reach 1 Proposed 2D model Results     HEC‐RAS 2D Model Output                  Appendix 2     HEC‐RAS 2D Model Output                  Appendix 2     HEC‐RAS 2D Model Output                  Appendix 2     HEC‐RAS 2D Model Output                  Appendix 2     HEC‐RAS 2D Model Output                  Appendix 2   HEC‐RAS 2D Model Output                  Appendix 2     HEC‐RAS 2D Model Output                  Appendix 2     HEC‐RAS 2D Model Output                  Appendix 2     HEC‐RAS 2D Model Output                  Appendix 2     HEC‐RAS 2D Model Output                  Appendix 2     HEC‐RAS 2D Model Output                  Appendix 2     HEC‐RAS 2D Model Output                  Appendix 2     HEC‐RAS 2D Model Output                  Appendix 2     HEC‐RAS 2D Model Output                  Appendix 2 Reach 2, 4, 5 Proposed 2D model Results     HEC‐RAS 2D Model Output                  Appendix 2     HEC‐RAS 2D Model Output                  Appendix 2     HEC‐RAS 2D Model Output                  Appendix 2     HEC‐RAS 2D Model Output                  Appendix 2 R5 Proposed water surface     HEC‐RAS 2D Model Output                  Appendix 2 R5 Proposed velocity     HEC‐RAS 2D Model Output                  Appendix 2 R5 Proposed depth    HEC‐RAS 2D Model Output                  Appendix 2 R4 Proposed water surface     HEC‐RAS 2D Model Output                  Appendix 2 R4 Proposed velocity     HEC‐RAS 2D Model Output                  Appendix 2 R4 Proposed depth     HEC‐RAS 2D Model Output                  Appendix 2 R2 Proposed water surface     HEC‐RAS 2D Model Output                  Appendix 2 R2 Proposed Velocity    HEC‐RAS 2D Model Output                  Appendix 2 R2 Proposed depth  Site Name:USACE Action ID:NCDWR Project Number:Sponsor:County:SurryMinimum Required Buffer Width1:30Mitigation TypeMitigation Ratio Multiplier2Creditable Stream Length3Baseline Stream CreditRestoration (1:1)153445344.00Enhancement I (1.5:1)1.5Enhancement II (2.5:1)2.58433.60Preservation (5:1)5Other (7.5:1)7.5Other (10:1)10Custom Ratio 1Custom Ratio 2Custom Ratio 3Custom Ratio 4Custom Ratio 5Totals 5428.00 5377.60Buffer Zones less than 15 feet >15 to 20 feet >20 to 25 feet >25 to 30 feet >30 to 50 feet >50 to 75 feet >75 to 100 feet >100 to 125 feet >125 to 150 feetMax Possible Buffer (square feet)4162840542805428054280217120271400271400271400271400Ideal Buffer (square feet)5164102.5854681.8554340.9253780.43210181.79260414.77263399.80268013.31273997.05Actual Buffer (square feet)6158813.8651209.9549892.5648532.55117950.6920978.2411417.887748.472386.06Zone Multiplier50%20%15%15%9%7%6%5%3%Buffer Credit Equivalent2688.801075.52806.64806.64483.98376.43322.66268.88161.33Percent of Ideal Buffer97%94%92%90%56%8%4%3%1%Credit Adjustment‐86.66‐68.29‐66.03‐78.71271.6030.3213.997.771.40Total Baseline CreditCredit Loss in Required BufferCredit Gain for Additional BufferNet Change inCredit from BuffersTotal Credit5377.60‐299.69325.0925.415403.01Water & Land Solutions, LLC4This amount is the maximum buffer area possible based on the linear footage of stream length if channel were perfectly straight with full buffer width.  This number is not used in calculations, but is provided as a reference. Buffer Width Zone (feet from Ordinary High Water Mark)6Square feet in each buffer zone, as measured by GIS, excluding non‐forested areas, all other credit type (e.g., wetland, nutrient offset, buffer), easement exceptions, open water, areas failing to meet the vegetation performance standard, etc. Additional credit is given to 150 feet in buffer width, so areas within the easement that are more than 150 feet from creditable streams should not be included in this measurement.  Non‐creditable stream reaches within the easement should be removed prior to calculating this area wtih GIS5Maximum potential size (in square feet) of each buffer zone measured around all creditable stream reaches, calculated using GIS, including areas outside of the easement.  The inner zone (0‐15') should be measured from the top of the OHWM or the edge of the average stream width if OHWM is not known.  Non‐creditable stream reaches within the easement should be removed prior to calculating this area wtih GIS.2Use the Custom Ratio fields to enter non‐standard ratios, which are equal to the number of feet in the feet‐to‐credit mitigation ratio (e.g., for a perservation ratio of 8 feet to 1 credit, the multiplier would be 8)1Minimum standard buffer width measured from the top of bank (50 feet in piedmont and coastal plain counties or 30 feet in mountain counties)3Equal to the number of feet of stream in each Mitigation Type.  If stream reaches are not creditable, they should be excluded from this measurement, even if they fall within the easementWilmington District Stream Buffer Credit CalculatorHorne Creek Tributaries SAW‐2017‐01510 Photo 1: R1 –Looking upstream at bank erosion and incision (1/2/2017) Photo 2: R1 –looking upstream lack of mature buffer and direct cattle access (1/2/2017) Photo 3: R1 –Looking upstream at undefined channel due to cattle wallowing (1/2/2017) Photo 4: Reach R1 –Looking downstream at drainage and lack of mature riparian buffer (1/2/2017) See Figure 6. Current Condition Map for Photo Locations Photo 5: R2 –Looking downstream at project start (1/2/2017) Photo 6: R2 –Looking downstream and bank erosion, headcut and incision (1/2/2017) Photo 7: R2 –Looking upstream at bank erosion and incision (1/2/2017) Photo 8: R2 –Looking downstream bank erosion and confluence with R3 (1/2/2017) See Figure 6. Current Condition Map for Photo Locations Photo 9: R3 –Looking upstream at bank erosion (1/2/2017)Photo 10: R3 –Looking downstream at bank erosion and confluence with R2 (1/2/2017) Photo 11: R3 –Looking upstream at headcut (1/2/2017)Photo 12: R3 –Looking upstream at BMP location (1/2/2017) See Figure 6. Current Condition Map for Photo Locations Photo 13: R4 –Looking downstream at bank erosion and US stream crossing location (1/2/2017) Photo 14: R4 –Looking upstream at bank erosion and incision (1/2/2017) Photo 15: R4 –Looking downstream at bank erosion (1/2/2017) Photo 16: R4 –Looking upstream at hoof shear and direct cattle access (1/2/2017) See Figure 6. Current Condition Map for Photo Locations Photo 17: R4b –Looking at stream/wetland area (1/2/2017)Photo 18: R4b –Looking downstream at headcut and minimal riparian buffer (1/2/2017) Photo 19: Reach R4b –Looking at headcut (1/2/2017)Photo 20: R4b –Looking downstream at channel incision and confluence with R4 (1/2/2017) See Figure 6. Current Condition Map for Photo Locations Photo 21: R4a –Looking upstream at start of reach at cattle wallowing area (1/2/2017) Photo 22: R4a –Looking downstream at stable headwater channel (1/2/2017) Photo 23: R4a –Looking downstream at stable headwater channel (1/2/2017) Photo 24: R4a –Looking downstream at stable channel and confluence with R4 (1/2/2017) See Figure 6. Current Condition Map for Photo Locations Photo 25: R5 –Looking downstream at bank erosion and channel incision (1/2/2017) Photo 26: R5 –Looking upstream in left floodplain at remnant channel feature (1/2/2017) Photo 27: R5 –Looking downstream at direct cattle access, hoof shear, and bank erosion (1/2/2017) Photo 28: R5 –Looking upstream at channel incision and narrow riparian buffer (1/2/2017) See Figure 6. Current Condition Map for Photo Locations Water & Land Solutions Horne Creek Tributaries Mitigation Project Appendix 3 – Site Protection Instrument WLS is in the process of obtaining a conservation easement from the current landowners for the project area. The easement deed and survey plat will be submitted to DMS and State Property Office (SPO) for approval and will be held by the State of North Carolina. Once recorded, the secured easement will allow WLS to proceed with the project development and protect the mitigation assets in perpetuity. The Table below includes the draft Site Protection Instrument information. Table 3-1. Site Protection Instrument Information Owner of Record (N/F) PIN County Site Protection Instrument Deed Book and Page Numbers Acreage Protected William Franklin Fulp and Debra P. Fulp 595200774688 Surry Conservation Easement --- 2.66 Mary Ellen Smith 595200765174 Surry Conservation Easement --- 2.75 Mary Ellen Smith 595200772795 Surry Conservation Easement --- 0.28 Brown Farms of Surry County, LLC (c/o Edward Thomas Brown) 595200567091 Surry Conservation Easement --- 6.07 Jane B. Boger 595200733427 Surry Conservation Easement --- 0.002 Water & Land Solutions Horne Creek Tributaries Mitigation Project Appendix 4 – Credit Release Schedule All credit releases will be based on the total credit generated as reported by the as-built survey of the mitigation site. Under no circumstances shall any mitigation project be debited until the necessary Department of the Army (DA) authorization has been received for its construction or the District Engineer (DE) has otherwise provided written approval for the project in the case where no DA authorization is required for construction of the mitigation project. The DE, in consultation with the NC Interagency Review Team (NCIRT), will determine if performance standards have been satisfied sufficiently to meet the requirements of the release schedules below. In cases where some performance standards have not been met, credits may still be released depending on the specifics of the case. Monitoring may be required to restart or be extended, depending on the extent to which the site fails to meet the specified performance standard. The release of project credits will be subject to the criteria described in the Table below. Table 4-1. Credit Release Schedule Stream Credits Monitoring Year Credit Release Activity Interim Release Total Release 0 Initial Allocation - see requirements below 30% 30% 1 First year monitoring report demonstrates performance standards are being met 10% 40% 2 Second year monitoring report demonstrates performance standards are being met 10% 50% (60%*) 3 Third year monitoring report demonstrates performance standards are being met 10% 60% (70%*) 4 Fourth year monitoring report demonstrates performance standards are being met 5% 65% (75%*) 5 Fifth year monitoring report demonstrates performance standards are being met. 10% 75% (85%*) 6 Sixth year monitoring report demonstrates performance standards are being met. 5% 80% (90%*) 7 Seventh year monitoring report demonstrates performance standards are being met and project has received closeout approval. 10% 90% (100%) *See Initial Allocation of Released Credits and Subsequent Credit Release descriptions below. Water & Land Solutions Horne Creek Tributaries Mitigation Project Initial Allocation of Released Credits The initial allocation of released credits, as specified in the mitigation plan can be released by the NCDEQ DMS without prior written approval of the DE upon satisfactory completion of the following activities: a. Approval of the Final Mitigation Plan b. Recordation of the preservation mechanism, as well as a title opinion acceptable to the USACE covering the property. c. Completion of project construction (the initial physical and biological improvements to the mitigation site) pursuant to the mitigation plan; Per the NCDEQ DMS Instrument, construction means that a mitigation site has been constructed in its entirety, to include planting, and an as- built report has been produced. As-built reports must be sealed by an engineer prior to project closeout, if appropriate but not prior to the initial allocation of released credits. d. Receipt of necessary DA permit authorization or written DA approval for projects where DA permit issuance is not required. Subsequent Credit Releases All subsequent credit releases must be approved by the DE, in consultation with the NCIRT, based on a determination that required performance standards have been achieved. For stream projects a reserve of 10% of a site's total stream credits shall be released after two bankfull events have occurred, in separate years, provided the channel is stable and all other performance standards are met. In the event that less than two bankfull events occur during the monitoring period, release of these reserve credits shall be at the discretion of the NCIRT. As projects approach milestones associated with credit release, the NCDEQ DMS will submit a request for credit release to the DE along with documentation substantiating achievement of criteria required for release to occur. This documentation will be included with the annual monitoring report. Water & Land Solutions Horne Creek Tributaries Mitigation Project Appendix 5 – Financial Assurance Pursuant to Section IV H and Appendix III of the NCDEQ DMS (formerly Ecosystem Enhancement Program) In-Lieu Fee Instrument dated July 28, 2010, the North Carolina Department of Environmental Quality (NCDEQ) has provided the USACE-Wilmington District with a formal commitment to fund projects to satisfy mitigation requirements assumed by NCDEQ DMS. This commitment provides financial assurance for all mitigation projects implemented by the program. Water & Land Solutions Horne Creek Tributaries Mitigation Project Appendix 6 – Maintenance Plan The site will be monitored on a regular basis and a physical inspection of the site will take place at least once a year throughout the post-construction monitoring period until performance standards are met. These site inspections may identify site components and features that require routine maintenance. Routine maintenance will be most likely in the first two years following site construction and may include the following components as described in the Table below: Routine Maintenance Components Horne Creek Mitigation Project – NCDEQ DMS Project No. 100026 Feature Maintenance through project close-out Stream Routine channel maintenance and repair activities may include modifying in-stream structures to prevent piping, securing loose coir matting, and supplemental installations of live stakes and other target vegetation along the project reaches. Areas of concentrated stormwater and floodplain flows that intercept the channel may also require maintenance to Wetland N/A Vegetation Vegetation will be maintained to ensure the health and vigor of the targeted plant community. Routine vegetation maintenance and repair activities may include supplemental planting, pruning, and fertilizing. Exotic invasive plant species will treated by mechanical and/or chemical methods. Any invasive plant species control requiring herbicide application will be performed in accordance with NC Department of Agriculture (NCDA) rules and regulations. Site Boundary Site boundaries will be demarcated in the field to ensure clear distinction between the mitigation site and adjacent properties. Boundaries may be identified by fence, marker, bollard, post, or other means as allowed by site conditions and/or conservation easement. Boundary markers disturbed, damaged, or destroyed will be repaired and/or replaced on an as needed basis. Stream Crossing The stream crossing(s) within the site may be maintained only as allowed by the recorded Conservation Easement, deed restrictions, rights of way, or corridor agreements. Beaver Management Routine maintenance and repair activities caused by beaver activity may include supplemental planting, pruning, and dewatering/dam removal. Beaver management will be implemented using accepted trapping and removal methods only within the recorded Conservation Easement. Water & Land Solutions Horne Creek Tributaries Mitigation Project Appendix 7 – DWR Stream Identification Forms The streams at the project site were categorized into five reaches (R1, R2, R3, R4 and R5) totaling approximately 5,203 linear feet of existing streams. Reach breaks were based on drainage area breaks at confluences, changes in restoration/enhancement approaches, and/or changes in intermittent/perennial stream status. Field evaluations conducted at the proposal stage and during existing conditions assessments determined that Reaches R2, R3, R4 and R5 are perennial streams and project Reach R1 was determined to be an intermittent stream. Determinations were based on NCDWQ’s Methodology for Identification of Intermittent and Perennial Streams and Their Origins, (v4.11, Effective Date: September 1, 2010) stream assessment protocols. Copies of the supporting field forms are included herein. Table 7-1. Summary of Field Investigations to Determine Intermittent/Perennial Status Project Reach Designation Existing Project Reach Length (ft) NCDWQ Stream Classification Form Score1 Watershed Drainage Area (acres)1 Stream Status Based on Field Analyses R1 1,397 33 38 Perennial R2 286 22 41 Intermittent R3 75 29.75 29 Intermittent R4 1,191 31.5 83 Perennial R4a 124 30.5 29 Perennial/ Intermittent R4b 89 30 2 Perennial/ Intermittent R5 2,519 37 166 Perennial NC DWQ Stream Identification Form Version 4.11 Date: �'� -� Project/Site: � �re�r� f `Latitude: Evaluator: /- County: r �vy V- I Longitude: Total Points: Stream is at least intermittent 2 2, Stream Determination (circle one) I other if> 19 or perennial if> 30' % e Ephemeral Intermittent Perennial e.g. Quad Name: A. Geomorphology (Subtotal 1 a Continuity of channel bed and bank 2. Sinuosity of channel along thalweg 3. In -channel structure: ex. riffle -pool, step -pool, riPPle-Pool sequence 4. Particle size of stream substrate 5. Active/relict floodpiain 6. Depositional bars or benches 7. Recent alluvial deposits 8. Headcuts 9. Grade control 10. Natural valley 11. Second or greater order channel a artificial ditches are not rated; see discussions in manual V 0 0 0 0 Weak Moderate 1 2 1 2 1 2 ,' 1 �2 1- 2 1 2 E#___::: 1 Yes =3 Stron 3 3 Cl, 3 3 _a 1.5 ,�4'0j-&kR&2 NC DWQ Stream Identification Form Version 4.11 Date: t Le Project/Site: �o�� � Latitude: Evaluator: County: -Tom � r r Longitude: Stream is at least intermittent Stream Determin tion (circle one) I Other if>_ 19 or erennial if>_ 30' Z2. Ephemeral intermittent Perennial e.g. Quad Name: H. veomor holo (Subtotal = l L { , ) Absent 0 We 1 1a. Continuity of channel bed and bank 2. Sinuosity of channel along thalweg 0 3. In -channel structure: ex. riffle -pool, step -pool, 1 ri le- ool se uence 0 1 4. Particle size of stream substrate 0 5. Active/relict floodplain 0 1 6. Depositional bars or benches 0 1 1 7. Recent alluvial deposits 0 6. Headcuts 0 1 9. Grade control 0 1 10. Natural valley 0.� 11. Second or greater order channel 0 0.� No 0 - - �• �� a,� --cute, see uiscussions in manual ak TNI EYes= 1 4 1 NC DWQ Stream Identification Form Version 4.11 ove ",l C 'C (C Rc Date: 12 /R Project/Site: ��' Latitude: Evaluator: uV County: Svc r Longitude: Total Points: Stream is at least intermittent if>_ 19 or perennial if>_ 30` 2�t, 7 Stream Determinat' n (circle one) Ephemeral Intermittent Perennial Other e.g. Quad Name: A. Geomor holo (Subtotal = I ) 1 a. Continuity of channel bed and bank Absent Weak Moderate Stronc 0 1 3': 2. Sinuosity of channel along thalweg 0 3. In -channel structure: ex. riffle -pool, step -pool, 1 3 ri le- ool sequence 0 1 t�' 3 4. Particle size of stream substrate 0 - 5. Active/relict floodplain 1 3 6. Depositional bars or benches 7. Recent alluvial deposits p 0 2 3 8. Headcuts 1 2 3 9. Grade control 0 1 � , 3 10. Natural valley 0 0.51 1 1.5 11. Second or greater order channel 0.5 1 1. a artificial ditches are not rated; see discussions in manual No = 0 ---- , Yes = 3 B. Hydrology (Subtotal = 12. Presence of Baseflow 0 13. Iron oxidizing bacteria 1 2 3 14. Leaf litter 0 1i 2 31.5.; 15. Sediment on plants or debris 0 0.5; 0.5 0 16. Organic debris lines or piles . 1 1.5 17. Soil -based evidence of high water table? 0.5 1 - _. 1.5 C. BiologySubtotal = - S No = 0 t�'es = .3% 18. Fibrous roots in streambed 19. Rooted upland plants in streambed ,3- 2 1 0 20. Macrobenthos (note diversity and abundance) 0 Z 1 0 21. Aquatic Mollusks 1 2 3 22. Fish 0' 1 2 3 23. Crayfish ,p' 0.5 1 1.5 24. Amphibians 0.5 1 1.5 25. Algae 0, 0.5 1 1.5 26. Wetland plants in streambed .5 1 1.5 'perennial streams may also be identified using other methods. See P. 35 of manua FACW = 0.75: OBL = 1.5 Other = 0 Notes: Sketch: .a 4 v d IC 9-11 NU DWQ Stream Identification Form Version 4.11 Date: p Project/Site: v ! Latitude: Evaluator: f-_ County: Longitude: �1 b' Total Points: Stream is at least intermittent Stream Determin Lion (circle one) I Other if 2! 19 or erenniai if>_ 30' Ephemeral Intermittent Perennial e.g. Quad Name: h. veomor nolo (Subtotal = Z-I ." Absent 0 Weak 1 Moderate 2 Strong 13 Continuity of channel bed and bank 2. Sinuosity of channel along thalweg 3. In -channel structure: ex. riffle -pool, step -pool; ripple -pool sequence 4. Particle size of stream substrate 0 0 0 1 1 1 2 �a 2 EM3 5. Active/relict floodplain 0 16. Depositional bars or benches 0 1 7. Recent alluvial deposits 8. Neadcuts 9. Grade control 0 0 I 0.5 23 1 1 1.5, 1.5 10. Natural valley 11. Second or greater order channel artificial ditches are not rated; see discussions in manual 0 No = 0 0.5 Yes = 3 B. Hydrology Subtotal = . 12. Presence of Baseflow 0 1 13. Iron oxidizing bacteria 0 1 14. Leaf litter 1.5 1 15. Sediment on plants or debris 0.5 16. Organic debris lines or piles 0 - 17. Soil -based evidence of high water table? No = 0 C. Biolo Subtotal = `- 18. Fibrous roots in streambed 3 2 19. Rooted upland plants in streambed 3 2 20. Macrobenthos (note diversity and abundance) 0 1 21. Aquatic Mollusks L0 1 22. Fish (0, 0.5 23. Crayfish -0 = 0.5 24. Amphibians 0 0.5 25. Algae C� 5 26. Wetland plants in streambed 0.5 FACW 0. `perennial streams may also be identified using other methods. See p_ 35 of manual. Notes: Sketch: 2 V1.53 0.511 Yes =3 I 1 1 2 2 1 1 1 1 OBL = 1.5 Other = 0 3 1.5 1.5 NC DWQ Stream Identification Form Version 4.11 Date: (e I 1 Project/Site: J r 1- �-r i n Latitude: Evaluator: County: I Longitude: Total Points: Stream is at least intermittent Stream Determina ion (circle one) Other if 2: 19 or perennial if_> 30' -1 ) ' Ephemeral Intermittent Perennial e.g. Quad Name: A (-4Qmmnrnhn1nm, ,c..t.a..a„i _ 'k 7! " F 1a_ Continuity of channel bed and bank 2. Sinuosity of channel along thalweg 3. In -channel structure: ex. riffle -pool, step -pool, ri le- ool se ,,Mn- 4. Particle size of stream substrate r,vac„t 0 0 0 0 vveaK 1 1 1 1 moderate 2 2 _ 2 Strang 3 5. Active/relict floodplain 6. Depositional bars or benches 0 0 1 - 1 2 2 3 7. Recent alluvial deposits 2 3 8. Headcuts 9. Grade control p ;� 0 0.5 �2 � 3 1.5 10. Natural valley 0 0.5 1 1.5'•o 11. Second or greater order channel a arf dal ditches are not rated; see discussions in manual _ `�0 Yes = 3 B. Hydrology (Subtotal = 12. Presence of Baseflow 13. Iron oxidizing bacteria 14. Leaf litter 15. Sediment on plants or debris 16. Organic debris lines or piles 17. Soil -based evidence of high water C. Biolo y (Subtotal = 18. Fibrous roots in streamb d 19. Rooted upland plants in streambec 20. Macrobenthos (note diversity and abl 21- Aquatic Mollusks 22. Fish 23. Crayfish 24. Amphibians 25. Algae 26. Wetland plants in streambed 'perennial streams may also be identified L Notes: Sketch 0 1 2 1 1 0.5 0.5 1 & a 1 table? No = 0 3 2 2 1 ice) 1 2 0 1 2 0 ' 0.5 1 0 0.5 1 0.5 1 0.5 1 FACW = 0.75; OBL = 1-5 Other = 0 other methods. See p. 35 of manual. 1.5 V k 411 NC DWQ Stream Identification Form Version 4.11 Z Date: Project/Site: C (� I Latitude: Evaluator: > County: �_ / Longitude: Total Points: Stream is at least intermittent Stream Determination (circle one) Other if 2! 19 or perennial if>_ 30' Ephemeral Intermittent Perennial e.g. Quad Name: Q I llpl� I-- - - _-- - f channel bed and bank ••��C��� 0 nreaK Moderate Strong channel along thalweg 0 1 1 2 2 3% ZIn_channel.s tructure: ex. riffle pool, step -pool; F4. 2 3 e uence 0 COY of stream substrate 0 k 3 5. Active/relict floodplain 0 6. Depositional bars or benches 1 1 3 7. Recent alluvial deposits `d � 1 2 3 8. Headcuts 0 1 2 3 9. Grade control 2 3 ' 10. Natural valley 0 0.5 1 1 1.5 .�-. 11. Second or greater order channel N = U - artificial ditches are not rated; see discussions in maniiai Yes = 3 B- Hydrology (Subtotal = 12. Presence of Baseflow 0 1 2 13. Iron oxidizing bacteria 0 1 2 14. Leaf litter 1 5 1 15. Sediment on plants or debris co 0.5 0.5 1 16. Organic debris lines or piles t' 0 5 1 17. Soil -based evidence of high water table? No=O Yes=' C. Biolo Subtotal = 18 Fibrous roots ; t Ins reambed 19. Rooted upland plants in streambed 3 t 2J 1 20. Macrobenthos (note diversity and abundance) 2 1 21. Aquatic Mollusks 01 1 2 22. Fish 0 1 0.50 2 1 23. Crayfish 0.5 24. Amphibians 12i 1 25. Algae 0.5 1 26. Wetland plants in streambed 0 % 0.5 1 `perennial streams may also be identified using other methods. See p. 35 of manual. FACW = 0.75; OBL = 1.5 Other = 0 Notes: L Sketch: 1.5 1.5 0 0 3 3 1.5 1.5 1.5 1.5 "Nk_ liWV Ntream Identification Form Version 4.11 / Date: I j Project/Site: Latitude: Evaluator: County: ` Longitude: Total Points: Stream is at least intermittent Stream Determin ion (circle one) Other -if?: 19 or perennial if> 30` 3 Ephemeral Intermittent Perennial e.g. Quad Name: A. Geomnrnhninrnr _ i 4- c- - 1 a' Continuity of channel bed and bank ---WIIL 0 I rveaK 1 moClerate 2 Strong \ 3 / 2. Sinuosity of channel along thalweg 3. In -channel structure: ex. riffle -pool, step -pool, 6 1 001 sequence 4. Particle size of stream substrate 0 0 0 i 1 1 �� 2 2 3 3 i 3 5. Active/relict floodplain 6. Depositional bars or benches 0 0 1 2J 2 3 7. Recent alluvial deposits 0 1~ 2 3 8. Headcuts 9. Grade control 10. Natural valley 11. Second or greater order channel a artificial ditches are not rated; see discussions in manual 0 0 0 No 1 0.5 0.5 = 0 .y 1 3 1.5 1.5 Yes = 3 B. Hydrology ( Subtotal = s 12. Presence of Baseflow 0 1 13. Iron oxidizing bacteria 1 14. Leaf litter 1.5 1 15. Sediment on plants or debris �-= 0.5 16. Organic debris lines or piles 0 17. Soil -based evidence of high water table? 0.5 No = 0 C. Biology Subtotal = ; 18 Fibrou t roo sin streambed 3 2 19. Rooted upland plants in streambed 3 20. Macrobenthos (note diversity and abundance) 0 2 21. Aquatic Mollusks 1 22. Fish Oi 1 0.5 23. Crayfish 0 24. Amphibians 0 0.5 25. Algae 0 0.5 0.5 26. Wetland plants in streambed `perennial streams may also be identified using other methods. See p. 35 of manual. FACW = 0 Notes: Sketch 2 3 2 3 0.5 n 1_5 1.5 Yes = I 1 0 1 2 U1 2 3 1 1.5 1 1.5 1.5 I 1 15 OBL = 1.5 Other = 0 Water & Land Solutions Horne Creek Tributaries Mitigation Project Appendix 8 – USACE District Assessment Methods/Forms NC SAM FIELD ASSESSMENT FORM Accompanies User Manual Version 2.1 USACE AID #: NCDWR #: INSTRUCTIONS: Attach a sketch of the assessment area and photographs. Attach a copy of the USGS 7.5-minute topographic quadrangle, and circle the location of the stream reach under evaluation. If multiple stream reaches will be evaluated on the same prope rty, identify and number all reaches on the attached map, and include a separate form for each reach. See the NC SAM User Manual for detailed descriptions and explanations of requested information. Record in the “Notes/Sketch” section if supplementary measurements were performed. See the NC SAM User Manual for examples of additional measurements that may be relevant. NOTE EVIDENCE OF STRESSORS AFFECTING THE ASSESSMENT AREA (do not need to be within the assessment area). PROJECT/SITE INFORMATION: 1. Project name (if any): Horne Creek Tribs Mitigation Project 2. Date of evaluation: 5-9-2018 3. Applicant/owner name: Water & Land Solutions 4. Assessor name/organization: J. Morgan 5. County: Surry 6. Nearest named water body on USGS 7.5-minute quad: Ararat River 7. River basin: Yadkin-PeeDee 8. Site coordinates (decimal degrees, at lower end of assessment reach): 36.321882º -80.465275º STREAM INFORMATION: (depth and width can be approximations) 9. Site number (show on attached map): R1 10. Length of assessment reach evaluated (feet): 1,400 11. Channel depth from bed (in riffle, if present) to top of bank (feet): Unable to assess channel depth. 12. Channel width at top of bank (feet): 13. Is assessment reach a swamp steam? Yes No 14. Feature type: Perennial flow Intermittent flow Tidal Marsh Stream STREAM CATEGORY INFORMATION: 15. NC SAM Zone: Mountains (M) Piedmont (P) Inner Coastal Plain (I) Outer Coastal Plain (O) 16. Estimated geomorphic 19 valley shape (skip for Tidal Marsh Stream): A B (more sinuous stream, flatter valley slope) (less sinuous stream, steeper valley slope) 17. Watershed size: (skip Size 1 (< 0.1 mi2) Size 2 (0.1 to < 0.5 mi2) Size 3 (0.5 to < 5 mi2) Size 4 (≥ 5 mi2) for Tidal Marsh Stream) ADDITIONAL INFORMATION: 18. Were regulatory considerations evaluated? Yes No If Yes, check all that apply to the assessment area. Section 10 water Classified Trout Waters Water Supply Watershed (I II III IV V) Essential Fish Habitat Primary Nursery Area High Quality Waters/Outstanding Resource Waters Publicly owned property NCDWR Riparian buffer rule in effect Nutrient Sensitive Waters Anadromous fish 303(d) List CAMA Area of Environmental Concern (AEC) Documented presence of a federal and/or state listed protected species within the assessment area. List species: Designated Critical Habitat (list species) 19. Are additional stream information/supplementary measurements included in “Notes/Sketch” section or attached? Yes No 1. Channel Water – assessment reach metric (skip for Size 1 streams and Tidal Marsh Streams) A Water throughout assessment reach. B No flow, water in pools only. C No water in assessment reach. 2. Evidence of Flow Restriction – assessment reach metric A At least 10% of assessment reach in-stream habitat or riffle-pool sequence is severely affected by a flow restriction or fill to the point of obstructing flow or a channel choked with aquatic macrophytes or ponded water or impoundment on flood or ebb within the assessment reach (examples: undersized or perched culverts, causeways that constrict the channel, tidal gates , debris jams, beaver dams). B Not A 3. Feature Pattern – assessment reach metric A A majority of the assessment reach has altered pattern (examples: straightening, modification above or below culvert). B Not A 4. Feature Longitudinal Profile – assessment reach metric A Majority of assessment reach has a substantially altered stream profile (examples: channel down-cutting, existing damming, over widening, active aggradation, dredging, and excavation where appropriate channel profile has not reformed from any of these disturbances). B Not A 5. Signs of Active Instability – assessment reach metric Consider only current instability, not past events from which the stream has currently recovered. Examples of instability include active bank failure, active channel down-cutting (head-cut), active widening, and artificial hardening (such as concrete, gabion, rip-rap). A < 10% of channel unstable B 10 to 25% of channel unstable C > 25% of channel unstable 6. Streamside Area Interaction – streamside area metric Consider for the Left Bank (LB) and the Right Bank (RB). LB RB A A Little or no evidence of conditions that adversely affect reference interaction B B Moderate evidence of conditions (examples: berms, levees, down-cutting, aggradation, dredging) that adversely affect reference interaction (examples: limited streamside area access , disruption of flood flows through streamside area, leaky or intermittent bulkheads, causeways with floodplain constriction, minor ditching [including mosquito ditching]) C C Extensive evidence of conditions that adversely affect reference interaction (little to no floodplain/intertidal zone access [examples: causeways with floodplain and channel constriction, bulkheads , retaining walls, fill, stream incision, disruption of flood flows through streamside area] or too much floodplain/intertidal zone access [examples: impoundments, intensive mosquito ditching]) or floodplain/intertidal zone unnaturally absent or assessment reach is a man-made feature on an interstream divide 7. Water Quality Stressors – assessment reach/intertidal zone metric Check all that apply. A Discolored water in stream or intertidal zone (milky white, blue, unnatural water discoloration, oil sheen, stream foam) B Excessive sedimentation (burying of stream features or intertidal zone) C Noticeable evidence of pollutant discharges entering the assessment reach and causing a water quality problem D Odor (not including natural sulfide odors) E Current published or collected data indicating degraded water quality in the assessment reach. Cite source in “Notes/Sketch” section. F Livestock with access to stream or intertidal zone G Excessive algae in stream or intertidal zone H Degraded marsh vegetation in the intertidal zone (removal, burning, regular mowing, destruction, etc) I Other: (explain in “Notes/Sketch” section) J Little to no stressors 8. Recent Weather – watershed metric (skip for Tidal Marsh Streams) For Size 1 or 2 streams, D1 drought or higher is considered a drought; for Size 3 or 4 streams, D2 drought or higher is considered a drought. A Drought conditions and no rainfall or rainfall not exceeding 1 inch within the last 48 hours B Drought conditions and rainfall exceeding 1 inch within the last 48 hours C No drought conditions 9. Large or Dangerous Stream – assessment reach metric Yes No Is stream is too large or dangerous to assess? If Yes, skip to Metric 13 (Streamside Area Ground Surface Condition). 10. Natural In-stream Habitat Types – assessment reach metric 10a. Yes No Degraded in-stream habitat over majority of the assessment reach (examples of stressors include excessive sedimentation, mining, excavation, in-stream hardening [for example, rip-rap], recent dredging, and snagging) (evaluate for Size 4 Coastal Plain streams only, then skip to Metric 12) 10b. Check all that occur (occurs if > 5% coverage of assessment reach) (skip for Size 4 Coastal Plain streams) A Multiple aquatic macrophytes and aquatic mosses (include liverworts, lichens, and algal mats) B Multiple sticks and/or leaf packs and/or emergent vegetation C Multiple snags and logs (including lap trees) D 5% undercut banks and/or root mats and/or roots in banks extend to the normal wetted perimeter E Little or no habitat F 5% oysters or other natural hard bottoms G Submerged aquatic vegetation H Low-tide refugia (pools) I Sand bottom J 5% vertical bank along the marsh K Little or no habitat *********************************REMAINING QUESTIONS ARE NOT APPLICABLE FOR TIDAL MARSH STREAMS**************************** 11. Bedform and Substrate – assessment reach metric (skip for Size 4 Coastal Plain streams and Tidal Marsh Streams) 11a. Yes No Is assessment reach in a natural sand-bed stream? (skip for Coastal Plain streams) 11b. Bedform evaluated. Check the appropriate box(es). A Riffle-run section (evaluate 11c) B Pool-glide section (evaluate 11d) C Natural bedform absent (skip to Metric 12, Aquatic Life) 11c. In riffle sections, check all that occur below the normal wetted perimeter of the assessment reach – whether or not submerged. Check at least one box in each row (skip for Size 4 Coastal Plain streams and Tidal Marsh Streams). Not Present (NP) = absent, Rare (R) = present but < 10%, Common (C) = > 10-40%, Abundant (A) = > 40-70%, Predominant (P) = > 70%. Cumulative percentages should not exceed 100% for each assessment reach. NP R C A P Bedrock/saprolite Boulder (256 – 4096 mm) Cobble (64 – 256 mm) Gravel (2 – 64 mm) Sand (.062 – 2 mm) Silt/clay (< 0.062 mm) Detritus Artificial (rip-rap, concrete, etc.) 11d. Yes No Are pools filled with sediment? (skip for Size 4 Coastal Plain streams and Tidal Marsh Streams) Check for Tidal Marsh Streams Only 12. Aquatic Life – assessment reach metric (skip for Tidal Marsh Streams) 12a. Yes No Was an in-stream aquatic life assessment performed as described in the User Manual? If No, select one of the following reasons and skip to Metric 13. No Water Other: 12b. Yes No Are aquatic organisms present in the assessment reach (look in riffles, pools, then snags)? If Yes, check all that apply. If No, skip to Metric 13. 1 >1 Numbers over columns refer to “individuals” for Size 1 and 2 streams and “taxa” for Size 3 and 4 streams. Adult frogs Aquatic reptiles Aquatic macrophytes and aquatic mosses (include liverworts, lichens, and algal mats) Beetles Caddisfly larvae (T) Asian clam (Corbicula) Crustacean (isopod/amphipod/crayfish/shrimp) Damselfly and dragonfly larvae Dipterans Mayfly larvae (E) Megaloptera (alderfly, fishfly, dobsonfly larvae) Midges/mosquito larvae Mosquito fish (Gambusia) or mud minnows (Umbra pygmaea) Mussels/Clams (not Corbicula) Other fish Salamanders/tadpoles Snails Stonefly larvae (P) Tipulid larvae Worms/leeches 13. Streamside Area Ground Surface Condition – streamside area metric (skip for Tidal Marsh Streams and B valley types) Consider for the Left Bank (LB) and the Right Bank (RB). Consider storage capacity with regard to both overbank flow and upland runoff. LB RB A A Little or no alteration to water storage capacity over a majority of the streamside area B B Moderate alteration to water storage capacity over a majority of the streamside area C C Severe alteration to water storage capacity over a majority of the streamside area (examples: ditches, fill, soil compaction, livestock disturbance, buildings, man-made levees, drainage pipes) 14. Streamside Area Water Storage – streamside area metric (skip for Size 1 streams, Tidal Marsh Streams, and B valley types) Consider for the Left Bank (LB) and the Right Bank (RB) of the streamside area. LB RB A A Majority of streamside area with depressions able to pond water ≥ 6 inches deep B B Majority of streamside area with depressions able to pond water 3 to 6 inches deep C C Majority of streamside area with depressions able to pond water < 3 inches deep 15. Wetland Presence – streamside area metric (skip for Tidal Marsh Streams) Consider for the Left Bank (LB) and the Right Bank (RB). Do not consider wetlands outside of the streamside area or within the normal wetted perimeter of assessment reach. LB RB Y Y Are wetlands present in the streamside area? N N 16. Baseflow Contributors – assessment reach metric (skip for Size 4 streams and Tidal Marsh Streams) Check all contributors within the assessment reach or within view of and draining to the assessment reach. A Streams and/or springs (jurisdictional discharges) B Ponds (include wet detention basins; do not include sediment basins or dry detention basins) C Obstruction passing flow during low-flow periods within the assessment area (beaver dam, leaky dam, bottom-release dam, weir) D Evidence of bank seepage or sweating (iron in water indicates seepage) E Stream bed or bank soil reduced (dig through deposited sediment if present) F None of the above 17. Baseflow Detractors – assessment area metric (skip for Tidal Marsh Streams) Check all that apply. A Evidence of substantial water withdrawals from the assessment reach (includes areas excavated for pump installation) B Obstruction not passing flow during low-flow periods affecting the assessment reach (ex: watertight dam, sediment deposit) C Urban stream (≥ 24% impervious surface for watershed) D Evidence that the streamside area has been modified resulting i n accelerated drainage into the assessment reach E Assessment reach relocated to valley edge F None of the above 18. Shading – assessment reach metric (skip for Tidal Marsh Streams) Consider aspect. Consider “leaf-on” condition. A Stream shading is appropriate for stream category (may include gaps associated with natural processes) B Degraded (example: scattered trees) C Stream shading is gone or largely absent 19. Buffer Width – streamside area metric (skip for Tidal Marsh Streams) Consider “vegetated buffer” and “wooded buffer” separately for left bank (LB) and right bank (RB) starting at the top of bank out to the first break. Vegetated Wooded LB RB LB RB A A A A ≥ 100 feet wide or extends to the edge of the watershed B B B B From 50 to < 100 feet wide C C C C From 30 to < 50 feet wide D D D D From 10 to < 30 feet wide E E E E < 10 feet wide or no trees 20. Buffer Structure – streamside area metric (skip for Tidal Marsh Streams) Consider for left bank (LB) and right bank (RB) for Metric 19 (“Vegetated” Buffer Width). LB RB A A Mature forest B B Non-mature woody vegetation or modified vegetation structure C C Herbaceous vegetation with or without a strip of trees < 10 feet wide D D Maintained shrubs E E Little or no vegetation 21. Buffer Stressors – streamside area metric (skip for Tidal Marsh Streams) Check all appropriate boxes for left bank (LB) and right bank (RB). Indicate if listed stressor abuts stream (Abuts), does not abut but is within 30 feet of stream (< 30 feet), or is between 30 to 50 feet of stream (30-50 feet). If none of the following stressors occurs on either bank, check here and skip to Metric 22: Abuts < 30 feet 30-50 feet LB RB LB RB LB RB A A A A A A Row crops B B B B B B Maintained turf C C C C C C Pasture (no livestock)/commercial horticulture D D D D D D Pasture (active livestock use) 22. Stem Density – streamside area metric (skip for Tidal Marsh Streams) Consider for left bank (LB) and right bank (RB) for Metric 19 (“Wooded” Buffer Width). LB RB A A Medium to high stem density B B Low stem density C C No wooded riparian buffer or predominantly herbaceous species or bare ground 23. Continuity of Vegetated Buffer – streamside area metric (skip for Tidal Marsh Streams) Consider whether vegetated buffer is continuous along stream (parallel). Breaks are areas lacking vegetation > 10 feet wide. LB RB A A The total length of buffer breaks is < 25 percent. B B The total length of buffer breaks is between 25 and 50 percent. C C The total length of buffer breaks is > 50 percent. 24. Vegetative Composition – streamside area metric (skip for Tidal Marsh Streams) Evaluate the dominant vegetation within 100 feet of each bank or to the edge of the watershed (whichever comes first) as it contribute s to assessment reach habitat. LB RB A A Vegetation is close to undisturbed in species present and their proportions. Lower strata composed of native species, with non-native invasive species absent or sparse. B B Vegetation indicates disturbance in terms of species diversity or proportions, but is still largely composed of native species. This may include communities of weedy native species that develop after clear -cutting or clearing or communities with non-native invasive species present, but not dominant, over a large portion of the expected strata or communities missing understory but retaining canopy trees. C C Vegetation is severely disturbed in terms of species diversity or proport ions. Mature canopy is absent or communities with non-native invasive species dominant over a large portion of expected strata or communities composed of planted stands of non-characteristic species or communities inappropriately composed of a single species or no vegetation. 25. Conductivity – assessment reach metric (skip for all Coastal Plain streams) 25a. Yes No Was conductivity measurement recorded? If No, select one of the following reasons. No Water Other: No equipment during evaluation 25b. Check the box corresponding to the conductivity measurement (units of microsiemens per centimeter). A < 46 B 46 to < 67 C 67 to < 79 D 79 to < 230 E ≥ 230 Notes/Sketch: Draft NC SAM Stream Rating Sheet Accompanies User Manual Version 2.1 Stream Site Name Horne Creek Tribs Mitigation Project Date of Assessment 5-9-2018 Stream Category Pb1 Assessor Name/Organization J. Morgan Notes of Field Assessment Form (Y/N) NO Presence of regulatory considerations (Y/N) NO Additional stream information/supplementary measurements included (Y/N) NO NC SAM feature type (perennial, intermittent, Tidal Marsh Stream) Perennial Function Class Rating Summary USACE/ All Streams NCDWR Intermittent (1) Hydrology LOW (2) Baseflow HIGH (2) Flood Flow LOW (3) Streamside Area Attenuation LOW (4) Floodplain Access LOW (4) Wooded Riparian Buffer LOW (4) Microtopography NA (3) Stream Stability LOW (4) Channel Stability MEDIUM (4) Sediment Transport LOW (4) Stream Geomorphology MEDIUM (2) Stream/Intertidal Zone Interaction NA (2) Longitudinal Tidal Flow NA (2) Tidal Marsh Stream Stability NA (3) Tidal Marsh Channel Stability NA (3) Tidal Marsh Stream Geomorphology NA (1) Water Quality LOW (2) Baseflow HIGH (2) Streamside Area Vegetation LOW (3) Upland Pollutant Filtration LOW (3) Thermoregulation MEDIUM (2) Indicators of Stressors YES (2) Aquatic Life Tolerance MEDIUM (2) Intertidal Zone Filtration NA (1) Habitat LOW (2) In-stream Habitat LOW (3) Baseflow HIGH (3) Substrate LOW (3) Stream Stability MEDIUM (3) In-stream Habitat LOW (2) Stream-side Habitat LOW (3) Stream-side Habitat LOW (3) Thermoregulation LOW (2) Tidal Marsh In-stream Habitat NA (3) Flow Restriction NA (3) Tidal Marsh Stream Stability NA (4) Tidal Marsh Channel Stability NA (4) Tidal Marsh Stream Geomorphology NA (3) Tidal Marsh In-stream Habitat NA (2) Intertidal Zone NA Overall LOW NC SAM FIELD ASSESSMENT FORM Accompanies User Manual Version 2.1 USACE AID #: NCDWR #: INSTRUCTIONS: Attach a sketch of the assessment area and photographs. Attach a copy of the USGS 7.5-minute topographic quadrangle, and circle the location of the stream reach under evaluation. If multiple stream reaches will be evaluated on the same prope rty, identify and number all reaches on the attached map, and include a separate form for each reach. See the NC SAM User Manual for detailed descriptions and explanations of requested information. Record in the “Notes/Sketch” section if supplementary measurements were performed. See the NC SAM User Manual for examples of additional measurements that may be relevant. NOTE EVIDENCE OF STRESSORS AFFECTING THE ASSESSMENT AREA (do not need to be within the assessment area). PROJECT/SITE INFORMATION: 1. Project name (if any): Horne Creek Tribs Mitigation Project 2. Date of evaluation: 5-29-2018 3. Applicant/owner name: Water & Land Solutions 4. Assessor name/organization: J. Morgan 5. County: Surry 6. Nearest named water body on USGS 7.5-minute quad: Ararat River 7. River basin: Yadkin-PeeDee 8. Site coordinates (decimal degrees, at lower end of assessment reach): 36.172135º -80.300390º STREAM INFORMATION: (depth and width can be approximations) 9. Site number (show on attached map): R2 10. Length of assessment reach evaluated (feet): 240 11. Channel depth from bed (in riffle, if present) to top of bank (feet): 3.3 Unable to assess channel depth. 12. Channel width at top of bank (feet): 13.1 13. Is assessment reach a swamp steam? Yes No 14. Feature type: Perennial flow Intermittent flow Tidal Marsh Stream STREAM CATEGORY INFORMATION: 15. NC SAM Zone: Mountains (M) Piedmont (P) Inner Coastal Plain (I) Outer Coastal Plain (O) 16. Estimated geomorphic 19 valley shape (skip for Tidal Marsh Stream): A B (more sinuous stream, flatter valley slope) (less sinuous stream, steeper valley slope) 17. Watershed size: (skip Size 1 (< 0.1 mi2) Size 2 (0.1 to < 0.5 mi2) Size 3 (0.5 to < 5 mi2) Size 4 (≥ 5 mi2) for Tidal Marsh Stream) ADDITIONAL INFORMATION: 18. Were regulatory considerations evaluated? Yes No If Yes, check all that apply to the assessment area. Section 10 water Classified Trout Waters Water Supply Watershed (I II III IV V) Essential Fish Habitat Primary Nursery Area High Quality Waters/Outstanding Resource Waters Publicly owned property NCDWR Riparian buffer rule in effect Nutrient Sensitive Waters Anadromous fish 303(d) List CAMA Area of Environmental Concern (AEC) Documented presence of a federal and/or state listed protected species within the assessment area. List species: Designated Critical Habitat (list species) 19. Are additional stream information/supplementary measurements included in “Notes/Sketch” section or attached? Yes No 1. Channel Water – assessment reach metric (skip for Size 1 streams and Tidal Marsh Streams) A Water throughout assessment reach. B No flow, water in pools only. C No water in assessment reach. 2. Evidence of Flow Restriction – assessment reach metric A At least 10% of assessment reach in-stream habitat or riffle-pool sequence is severely affected by a flow restriction or fill to the point of obstructing flow or a channel choked with aquatic macrophytes or ponded water or impoundment on flood or ebb within the assessment reach (examples: undersized or perched culverts, causeways that constrict the channel, tidal gates , debris jams, beaver dams). B Not A 3. Feature Pattern – assessment reach metric A A majority of the assessment reach has altered pattern (examples: straightening, modification above or below culvert). B Not A 4. Feature Longitudinal Profile – assessment reach metric A Majority of assessment reach has a substantially altered stream profile (examples: channel down-cutting, existing damming, over widening, active aggradation, dredging, and excavation where appropriate channel profile has not reformed from any of these disturbances). B Not A 5. Signs of Active Instability – assessment reach metric Consider only current instability, not past events from which the stream has currently recovered. Examples of instability include active bank failure, active channel down-cutting (head-cut), active widening, and artificial hardening (such as concrete, gabion, rip-rap). A < 10% of channel unstable B 10 to 25% of channel unstable C > 25% of channel unstable 6. Streamside Area Interaction – streamside area metric Consider for the Left Bank (LB) and the Right Bank (RB). LB RB A A Little or no evidence of conditions that adversely affect reference interaction B B Moderate evidence of conditions (examples: berms, levees, down-cutting, aggradation, dredging) that adversely affect reference interaction (examples: limited streamside area access , disruption of flood flows through streamside area, leaky or intermittent bulkheads, causeways with floodplain constriction, minor ditching [including mosquito ditching]) C C Extensive evidence of conditions that adversely affect reference interaction (little to no floodplain/intertidal zone access [examples: causeways with floodplain and channel constriction, bulkheads , retaining walls, fill, stream incision, disruption of flood flows through streamside area] or too much floodplain/intertidal zone access [examples: impoundments, intensive mosquito ditching]) or floodplain/intertidal zone unnaturally absent or assessment reach is a man-made feature on an interstream divide 7. Water Quality Stressors – assessment reach/intertidal zone metric Check all that apply. A Discolored water in stream or intertidal zone (milky white, blue, unnatural water discoloration, oil sheen, stream foam) B Excessive sedimentation (burying of stream features or intertidal zone) C Noticeable evidence of pollutant discharges entering the assessment reach and causing a water quality problem D Odor (not including natural sulfide odors) E Current published or collected data indicating degraded water quality in the assessment reach. Cite source in “Notes/Sketch” section. F Livestock with access to stream or intertidal zone G Excessive algae in stream or intertidal zone H Degraded marsh vegetation in the intertidal zone (removal, burning, regular mowing, destruction, etc) I Other: (explain in “Notes/Sketch” section) J Little to no stressors 8. Recent Weather – watershed metric (skip for Tidal Marsh Streams) For Size 1 or 2 streams, D1 drought or higher is considered a drought; for Size 3 or 4 streams, D2 drought or higher is considered a drought. A Drought conditions and no rainfall or rainfall not exceeding 1 inch within the last 48 hours B Drought conditions and rainfall exceeding 1 inch within the last 48 hours C No drought conditions 9. Large or Dangerous Stream – assessment reach metric Yes No Is stream is too large or dangerous to assess? If Yes, skip to Metric 13 (Streamside Area Ground Surface Condition). 10. Natural In-stream Habitat Types – assessment reach metric 10a. Yes No Degraded in-stream habitat over majority of the assessment reach (examples of stressors include excessive sedimentation, mining, excavation, in-stream hardening [for example, rip-rap], recent dredging, and snagging) (evaluate for Size 4 Coastal Plain streams only, then skip to Metric 12) 10b. Check all that occur (occurs if > 5% coverage of assessment reach) (skip for Size 4 Coastal Plain streams) A Multiple aquatic macrophytes and aquatic mosses (include liverworts, lichens, and algal mats) B Multiple sticks and/or leaf packs and/or emergent vegetation C Multiple snags and logs (including lap trees) D 5% undercut banks and/or root mats and/or roots in banks extend to the normal wetted perimeter E Little or no habitat F 5% oysters or other natural hard bottoms G Submerged aquatic vegetation H Low-tide refugia (pools) I Sand bottom J 5% vertical bank along the marsh K Little or no habitat *********************************REMAINING QUESTIONS ARE NOT APPLICABLE FOR TIDAL MARSH STREAMS**************************** 11. Bedform and Substrate – assessment reach metric (skip for Size 4 Coastal Plain streams and Tidal Marsh Streams) 11a. Yes No Is assessment reach in a natural sand-bed stream? (skip for Coastal Plain streams) 11b. Bedform evaluated. Check the appropriate box(es). A Riffle-run section (evaluate 11c) B Pool-glide section (evaluate 11d) C Natural bedform absent (skip to Metric 12, Aquatic Life) 11c. In riffle sections, check all that occur below the normal wetted perimeter of the assessment reach – whether or not submerged. Check at least one box in each row (skip for Size 4 Coastal Plain streams and Tidal Marsh Streams). Not Present (NP) = absent, Rare (R) = present but < 10%, Common (C) = > 10-40%, Abundant (A) = > 40-70%, Predominant (P) = > 70%. Cumulative percentages should not exceed 100% for each assessment reach. NP R C A P Bedrock/saprolite Boulder (256 – 4096 mm) Cobble (64 – 256 mm) Gravel (2 – 64 mm) Sand (.062 – 2 mm) Silt/clay (< 0.062 mm) Detritus Artificial (rip-rap, concrete, etc.) 11d. Yes No Are pools filled with sediment? (skip for Size 4 Coastal Plain streams and Tidal Marsh Streams) Check for Tidal Marsh Streams Only 12. Aquatic Life – assessment reach metric (skip for Tidal Marsh Streams) 12a. Yes No Was an in-stream aquatic life assessment performed as described in the User Manual? If No, select one of the following reasons and skip to Metric 13. No Water Other: 12b. Yes No Are aquatic organisms present in the assessment reach (look in riffles, pools, then snags)? If Yes, check all that apply. If No, skip to Metric 13. 1 >1 Numbers over columns refer to “individuals” for Size 1 and 2 streams and “taxa” for Size 3 and 4 streams. Adult frogs Aquatic reptiles Aquatic macrophytes and aquatic mosses (include liverworts, lichens, and algal mats) Beetles Caddisfly larvae (T) Asian clam (Corbicula) Crustacean (isopod/amphipod/crayfish/shrimp) Damselfly and dragonfly larvae Dipterans Mayfly larvae (E) Megaloptera (alderfly, fishfly, dobsonfly larvae) Midges/mosquito larvae Mosquito fish (Gambusia) or mud minnows (Umbra pygmaea) Mussels/Clams (not Corbicula) Other fish Salamanders/tadpoles Snails Stonefly larvae (P) Tipulid larvae Worms/leeches 13. Streamside Area Ground Surface Condition – streamside area metric (skip for Tidal Marsh Streams and B valley types) Consider for the Left Bank (LB) and the Right Bank (RB). Consider storage capacity with regard to both overbank flow and upland runoff. LB RB A A Little or no alteration to water storage capacity over a majority of the streamside area B B Moderate alteration to water storage capacity over a majority of the streamside area C C Severe alteration to water storage capacity over a majority of the streamside area (examples: ditches, fill, soil compaction, livestock disturbance, buildings, man-made levees, drainage pipes) 14. Streamside Area Water Storage – streamside area metric (skip for Size 1 streams, Tidal Marsh Streams, and B valley types) Consider for the Left Bank (LB) and the Right Bank (RB) of the streamside area. LB RB A A Majority of streamside area with depressions able to pond water ≥ 6 inches deep B B Majority of streamside area with depressions able to pond water 3 to 6 inches deep C C Majority of streamside area with depressions able to pond water < 3 inches deep 15. Wetland Presence – streamside area metric (skip for Tidal Marsh Streams) Consider for the Left Bank (LB) and the Right Bank (RB). Do not consider wetlands outside of the streamside area or within the normal wetted perimeter of assessment reach. LB RB Y Y Are wetlands present in the streamside area? N N 16. Baseflow Contributors – assessment reach metric (skip for Size 4 streams and Tidal Marsh Streams) Check all contributors within the assessment reach or within view of and draining to the assessment reach. A Streams and/or springs (jurisdictional discharges) B Ponds (include wet detention basins; do not include sediment basins or dry detention basins) C Obstruction passing flow during low-flow periods within the assessment area (beaver dam, leaky dam, bottom-release dam, weir) D Evidence of bank seepage or sweating (iron in water indicates seepage) E Stream bed or bank soil reduced (dig through deposited sediment if present) F None of the above 17. Baseflow Detractors – assessment area metric (skip for Tidal Marsh Streams) Check all that apply. A Evidence of substantial water withdrawals from the assessment reach (includes areas excavated for pump installation) B Obstruction not passing flow during low-flow periods affecting the assessment reach (ex: watertight dam, sediment deposit) C Urban stream (≥ 24% impervious surface for watershed) D Evidence that the streamside area has been modified resulting i n accelerated drainage into the assessment reach E Assessment reach relocated to valley edge F None of the above 18. Shading – assessment reach metric (skip for Tidal Marsh Streams) Consider aspect. Consider “leaf-on” condition. A Stream shading is appropriate for stream category (may include gaps associated with natural processes) B Degraded (example: scattered trees) C Stream shading is gone or largely absent 19. Buffer Width – streamside area metric (skip for Tidal Marsh Streams) Consider “vegetated buffer” and “wooded buffer” separately for left bank (LB) and right bank (RB) starting at the top of bank out to the first break. Vegetated Wooded LB RB LB RB A A A A ≥ 100 feet wide or extends to the edge of the watershed B B B B From 50 to < 100 feet wide C C C C From 30 to < 50 feet wide D D D D From 10 to < 30 feet wide E E E E < 10 feet wide or no trees 20. Buffer Structure – streamside area metric (skip for Tidal Marsh Streams) Consider for left bank (LB) and right bank (RB) for Metric 19 (“Vegetated” Buffer Width). LB RB A A Mature forest B B Non-mature woody vegetation or modified vegetation structure C C Herbaceous vegetation with or without a strip of trees < 10 feet wide D D Maintained shrubs E E Little or no vegetation 21. Buffer Stressors – streamside area metric (skip for Tidal Marsh Streams) Check all appropriate boxes for left bank (LB) and right bank (RB). Indicate if listed stressor abuts stream (Abuts), does not abut but is within 30 feet of stream (< 30 feet), or is between 30 to 50 feet of stream (30-50 feet). If none of the following stressors occurs on either bank, check here and skip to Metric 22: Abuts < 30 feet 30-50 feet LB RB LB RB LB RB A A A A A A Row crops B B B B B B Maintained turf C C C C C C Pasture (no livestock)/commercial horticulture D D D D D D Pasture (active livestock use) 22. Stem Density – streamside area metric (skip for Tidal Marsh Streams) Consider for left bank (LB) and right bank (RB) for Metric 19 (“Wooded” Buffer Width). LB RB A A Medium to high stem density B B Low stem density C C No wooded riparian buffer or predominantly herbaceous species or bare ground 23. Continuity of Vegetated Buffer – streamside area metric (skip for Tidal Marsh Streams) Consider whether vegetated buffer is continuous along stream (parallel). Breaks are areas lacking vegetation > 10 feet wide. LB RB A A The total length of buffer breaks is < 25 percent. B B The total length of buffer breaks is between 25 and 50 percent. C C The total length of buffer breaks is > 50 percent. 24. Vegetative Composition – streamside area metric (skip for Tidal Marsh Streams) Evaluate the dominant vegetation within 100 feet of each bank or to the edge of the watershed (whichever comes first) as it contribute s to assessment reach habitat. LB RB A A Vegetation is close to undisturbed in species present and their proportions. Lower strata composed of native species, with non-native invasive species absent or sparse. B B Vegetation indicates disturbance in terms of species diversity or proportions, but is still largely composed of native species. This may include communities of weedy native species that develop after clear -cutting or clearing or communities with non-native invasive species present, but not dominant, over a large portion of the expected strata or communities missing understory but retaining canopy trees. C C Vegetation is severely disturbed in terms of species diversity or proport ions. Mature canopy is absent or communities with non-native invasive species dominant over a large portion of expected strata or communities composed of planted stands of non-characteristic species or communities inappropriately composed of a single species or no vegetation. 25. Conductivity – assessment reach metric (skip for all Coastal Plain streams) 25a. Yes No Was conductivity measurement recorded? If No, select one of the following reasons. No Water Other: 25b. Check the box corresponding to the conductivity measurement (units of microsiemens per centimeter). A < 46 B 46 to < 67 C 67 to < 79 D 79 to < 230 E ≥ 230 Notes/Sketch: Draft NC SAM Stream Rating Sheet Accompanies User Manual Version 2.1 Stream Site Name Horne Creek Tribs Mitigation Project Date of Assessment 5-29-2018 Stream Category Pb1 Assessor Name/Organization J. Morgan Notes of Field Assessment Form (Y/N) NO Presence of regulatory considerations (Y/N) NO Additional stream information/supplementary measurements included (Y/N) NO NC SAM feature type (perennial, intermittent, Tidal Marsh Stream) Intermittent Function Class Rating Summary USACE/ All Streams NCDWR Intermittent (1) Hydrology LOW LOW (2) Baseflow HIGH HIGH (2) Flood Flow LOW LOW (3) Streamside Area Attenuation LOW LOW (4) Floodplain Access MEDIUM MEDIUM (4) Wooded Riparian Buffer LOW LOW (4) Microtopography NA NA (3) Stream Stability MEDIUM MEDIUM (4) Channel Stability HIGH HIGH (4) Sediment Transport HIGH HIGH (4) Stream Geomorphology LOW LOW (2) Stream/Intertidal Zone Interaction NA NA (2) Longitudinal Tidal Flow NA NA (2) Tidal Marsh Stream Stability NA NA (3) Tidal Marsh Channel Stability NA NA (3) Tidal Marsh Stream Geomorphology NA NA (1) Water Quality (2) Baseflow HIGH HIGH (2) Streamside Area Vegetation LOW LOW (3) Upland Pollutant Filtration LOW LOW (3) Thermoregulation MEDIUM MEDIUM (2) Indicators of Stressors (2) Aquatic Life Tolerance HIGH NA (2) Intertidal Zone Filtration NA NA (1) Habitat HIGH HIGH (2) In-stream Habitat HIGH HIGH (3) Baseflow HIGH HIGH (3) Substrate HIGH HIGH (3) Stream Stability MEDIUM MEDIUM (3) In-stream Habitat HIGH HIGH (2) Stream-side Habitat MEDIUM MEDIUM (3) Stream-side Habitat MEDIUM MEDIUM (3) Thermoregulation MEDIUM MEDIUM (2) Tidal Marsh In-stream Habitat NA NA (3) Flow Restriction NA NA (3) Tidal Marsh Stream Stability NA NA (4) Tidal Marsh Channel Stability NA NA (4) Tidal Marsh Stream Geomorphology NA NA (3) Tidal Marsh In-stream Habitat NA NA (2) Intertidal Zone NA NA Overall LOW NC SAM FIELD ASSESSMENT FORM Accompanies User Manual Version 2.1 USACE AID #: NCDWR #: INSTRUCTIONS: Attach a sketch of the assessment area and photographs. Attach a copy of the USGS 7.5-minute topographic quadrangle, and circle the location of the stream reach under evaluation. If multiple stream reaches will be evaluated on the same prope rty, identify and number all reaches on the attached map, and include a separate form for each reach. See the NC SAM User Manual for detailed descriptions and explanations of requested information. Record in the “Notes/Sketch” section if supplementary measurements were performed. See the NC SAM User Manual for examples of additional measurements that may be relevant. NOTE EVIDENCE OF STRESSORS AFFECTING THE ASSESSMENT AREA (do not need to be within the assessment area). PROJECT/SITE INFORMATION: 1. Project name (if any): Horne Creek Tribs Mitigation Project 2. Date of evaluation: 5-9-2018 3. Applicant/owner name: Water & Land Solutions 4. Assessor name/organization: J. Morgan 5. County: Surry 6. Nearest named water body on USGS 7.5-minute quad: Ararat River 7. River basin: Yadkin-PeeDee 8. Site coordinates (decimal degrees, at lower end of assessment reach): 36.319821º -80.463861º STREAM INFORMATION: (depth and width can be approximations) 9. Site number (show on attached map): R3 10. Length of assessment reach evaluated (feet): 180 11. Channel depth from bed (in riffle, if present) to top of bank (feet): 4.1 Unable to assess channel depth. 12. Channel width at top of bank (feet): 17.7 13. Is assessment reach a swamp steam? Yes No 14. Feature type: Perennial flow Intermittent flow Tidal Marsh Stream STREAM CATEGORY INFORMATION: 15. NC SAM Zone: Mountains (M) Piedmont (P) Inner Coastal Plain (I) Outer Coastal Plain (O) 16. Estimated geomorphic 19 valley shape (skip for Tidal Marsh Stream): A B (more sinuous stream, flatter valley slope) (less sinuous stream, steeper valley slope) 17. Watershed size: (skip Size 1 (< 0.1 mi2) Size 2 (0.1 to < 0.5 mi2) Size 3 (0.5 to < 5 mi2) Size 4 (≥ 5 mi2) for Tidal Marsh Stream) ADDITIONAL INFORMATION: 18. Were regulatory considerations evaluated? Yes No If Yes, check all that apply to the assessment area. Section 10 water Classified Trout Waters Water Supply Watershed (I II III IV V) Essential Fish Habitat Primary Nursery Area High Quality Waters/Outstanding Resource Waters Publicly owned property NCDWR Riparian buffer rule in effect Nutrient Sensitive Waters Anadromous fish 303(d) List CAMA Area of Environmental Concern (AEC) Documented presence of a federal and/or state listed protected species within the assessment area. List species: Designated Critical Habitat (list species) 19. Are additional stream information/supplementary measurements included in “Notes/Sketch” section or attached? Yes No 1. Channel Water – assessment reach metric (skip for Size 1 streams and Tidal Marsh Streams) A Water throughout assessment reach. B No flow, water in pools only. C No water in assessment reach. 2. Evidence of Flow Restriction – assessment reach metric A At least 10% of assessment reach in-stream habitat or riffle-pool sequence is severely affected by a flow restriction or fill to the point of obstructing flow or a channel choked with aquatic macrophytes or ponded water or impoundment on flood or ebb within the assessment reach (examples: undersized or perched culverts, causeways that constrict the channel, tidal gates , debris jams, beaver dams). B Not A 3. Feature Pattern – assessment reach metric A A majority of the assessment reach has altered pattern (examples: straightening, modification above or below culvert). B Not A 4. Feature Longitudinal Profile – assessment reach metric A Majority of assessment reach has a substantially altered stream profile (examples: channel down-cutting, existing damming, over widening, active aggradation, dredging, and excavation where appropriate channel profile has not reformed from any of these disturbances). B Not A 5. Signs of Active Instability – assessment reach metric Consider only current instability, not past events from which the stream has currently recovered. Examples of instability include active bank failure, active channel down-cutting (head-cut), active widening, and artificial hardening (such as concrete, gabion, rip-rap). A < 10% of channel unstable B 10 to 25% of channel unstable C > 25% of channel unstable 6. Streamside Area Interaction – streamside area metric Consider for the Left Bank (LB) and the Right Bank (RB). LB RB A A Little or no evidence of conditions that adversely affect reference interaction B B Moderate evidence of conditions (examples: berms, levees, down-cutting, aggradation, dredging) that adversely affect reference interaction (examples: limited streamside area access , disruption of flood flows through streamside area, leaky or intermittent bulkheads, causeways with floodplain constriction, minor ditching [including mosquito ditching]) C C Extensive evidence of conditions that adversely affect reference interaction (little to no floodplain/intertidal zone access [examples: causeways with floodplain and channel constriction, bulkheads , retaining walls, fill, stream incision, disruption of flood flows through streamside area] or too much floodplain/intertidal zone access [examples: impoundments, intensive mosquito ditching]) or floodplain/intertidal zone unnaturally absent or assessment reach is a man-made feature on an interstream divide 7. Water Quality Stressors – assessment reach/intertidal zone metric Check all that apply. A Discolored water in stream or intertidal zone (milky white, blue, unnatural water discoloration, oil sheen, stream foam) B Excessive sedimentation (burying of stream features or intertidal zone) C Noticeable evidence of pollutant discharges entering the assessment reach and causing a water quality problem D Odor (not including natural sulfide odors) E Current published or collected data indicating degraded water quality in the assessment reach. Cite source in “Notes/Sketch” section. F Livestock with access to stream or intertidal zone G Excessive algae in stream or intertidal zone H Degraded marsh vegetation in the intertidal zone (removal, burning, regular mowing, destruction, etc) I Other: (explain in “Notes/Sketch” section) J Little to no stressors 8. Recent Weather – watershed metric (skip for Tidal Marsh Streams) For Size 1 or 2 streams, D1 drought or higher is considered a drought; for Size 3 or 4 streams, D2 drought or higher is considered a drought. A Drought conditions and no rainfall or rainfall not exceeding 1 inch within the last 48 hours B Drought conditions and rainfall exceeding 1 inch within the last 48 hours C No drought conditions 9. Large or Dangerous Stream – assessment reach metric Yes No Is stream is too large or dangerous to assess? If Yes, skip to Metric 13 (Streamside Area Ground Surface Condition). 10. Natural In-stream Habitat Types – assessment reach metric 10a. Yes No Degraded in-stream habitat over majority of the assessment reach (examples of stressors include excessive sedimentation, mining, excavation, in-stream hardening [for example, rip-rap], recent dredging, and snagging) (evaluate for Size 4 Coastal Plain streams only, then skip to Metric 12) 10b. Check all that occur (occurs if > 5% coverage of assessment reach) (skip for Size 4 Coastal Plain streams) A Multiple aquatic macrophytes and aquatic mosses (include liverworts, lichens, and algal mats) B Multiple sticks and/or leaf packs and/or emergent vegetation C Multiple snags and logs (including lap trees) D 5% undercut banks and/or root mats and/or roots in banks extend to the normal wetted perimeter E Little or no habitat F 5% oysters or other natural hard bottoms G Submerged aquatic vegetation H Low-tide refugia (pools) I Sand bottom J 5% vertical bank along the marsh K Little or no habitat *********************************REMAINING QUESTIONS ARE NOT APPLICABLE FOR TIDAL MARSH STREAMS**************************** 11. Bedform and Substrate – assessment reach metric (skip for Size 4 Coastal Plain streams and Tidal Marsh Streams) 11a. Yes No Is assessment reach in a natural sand-bed stream? (skip for Coastal Plain streams) 11b. Bedform evaluated. Check the appropriate box(es). A Riffle-run section (evaluate 11c) B Pool-glide section (evaluate 11d) C Natural bedform absent (skip to Metric 12, Aquatic Life) 11c. In riffle sections, check all that occur below the normal wetted perimeter of the assessment reach – whether or not submerged. Check at least one box in each row (skip for Size 4 Coastal Plain streams and Tidal Marsh Streams). Not Present (NP) = absent, Rare (R) = present but < 10%, Common (C) = > 10-40%, Abundant (A) = > 40-70%, Predominant (P) = > 70%. Cumulative percentages should not exceed 100% for each assessment reach. NP R C A P Bedrock/saprolite Boulder (256 – 4096 mm) Cobble (64 – 256 mm) Gravel (2 – 64 mm) Sand (.062 – 2 mm) Silt/clay (< 0.062 mm) Detritus Artificial (rip-rap, concrete, etc.) 11d. Yes No Are pools filled with sediment? (skip for Size 4 Coastal Plain streams and Tidal Marsh Streams) Check for Tidal Marsh Streams Only 12. Aquatic Life – assessment reach metric (skip for Tidal Marsh Streams) 12a. Yes No Was an in-stream aquatic life assessment performed as described in the User Manual? If No, select one of the following reasons and skip to Metric 13. No Water Other: 12b. Yes No Are aquatic organisms present in the assessment reach (look in riffles, pools, then snags)? If Yes, check all that apply. If No, skip to Metric 13. 1 >1 Numbers over columns refer to “individuals” for Size 1 and 2 streams and “taxa” for Size 3 and 4 streams. Adult frogs Aquatic reptiles Aquatic macrophytes and aquatic mosses (include liverworts, lichens, and algal mats) Beetles Caddisfly larvae (T) Asian clam (Corbicula) Crustacean (isopod/amphipod/crayfish/shrimp) Damselfly and dragonfly larvae Dipterans Mayfly larvae (E) Megaloptera (alderfly, fishfly, dobsonfly larvae) Midges/mosquito larvae Mosquito fish (Gambusia) or mud minnows (Umbra pygmaea) Mussels/Clams (not Corbicula) Other fish Salamanders/tadpoles Snails Stonefly larvae (P) Tipulid larvae Worms/leeches 13. Streamside Area Ground Surface Condition – streamside area metric (skip for Tidal Marsh Streams and B valley types) Consider for the Left Bank (LB) and the Right Bank (RB). Consider storage capacity with regard to both overbank flow and upland runoff. LB RB A A Little or no alteration to water storage capacity over a majority of the streamside area B B Moderate alteration to water storage capacity over a majority of the streamside area C C Severe alteration to water storage capacity over a majority of the streamside area (examples: ditches, fill, soil compaction, livestock disturbance, buildings, man-made levees, drainage pipes) 14. Streamside Area Water Storage – streamside area metric (skip for Size 1 streams, Tidal Marsh Streams, and B valley types) Consider for the Left Bank (LB) and the Right Bank (RB) of the streamside area. LB RB A A Majority of streamside area with depressions able to pond water ≥ 6 inches deep B B Majority of streamside area with depressions able to pond water 3 to 6 inches deep C C Majority of streamside area with depressions able to pond water < 3 inches deep 15. Wetland Presence – streamside area metric (skip for Tidal Marsh Streams) Consider for the Left Bank (LB) and the Right Bank (RB). Do not consider wetlands outside of the streamside area or within the normal wetted perimeter of assessment reach. LB RB Y Y Are wetlands present in the streamside area? N N 16. Baseflow Contributors – assessment reach metric (skip for Size 4 streams and Tidal Marsh Streams) Check all contributors within the assessment reach or within view of and draining to the assessment reach. A Streams and/or springs (jurisdictional discharges) B Ponds (include wet detention basins; do not include sediment basins or dry detention basins) C Obstruction passing flow during low-flow periods within the assessment area (beaver dam, leaky dam, bottom-release dam, weir) D Evidence of bank seepage or sweating (iron in water indicates seepage) E Stream bed or bank soil reduced (dig through deposited sediment if present) F None of the above 17. Baseflow Detractors – assessment area metric (skip for Tidal Marsh Streams) Check all that apply. A Evidence of substantial water withdrawals from the assessment reach (includes areas excavated for pump installation) B Obstruction not passing flow during low-flow periods affecting the assessment reach (ex: watertight dam, sediment deposit) C Urban stream (≥ 24% impervious surface for watershed) D Evidence that the streamside area has been modified resulting i n accelerated drainage into the assessment reach E Assessment reach relocated to valley edge F None of the above 18. Shading – assessment reach metric (skip for Tidal Marsh Streams) Consider aspect. Consider “leaf-on” condition. A Stream shading is appropriate for stream category (may include gaps associated with natural processes) B Degraded (example: scattered trees) C Stream shading is gone or largely absent 19. Buffer Width – streamside area metric (skip for Tidal Marsh Streams) Consider “vegetated buffer” and “wooded buffer” separately for left bank (LB) and right bank (RB) starting at the top of bank out to the first break. Vegetated Wooded LB RB LB RB A A A A ≥ 100 feet wide or extends to the edge of the watershed B B B B From 50 to < 100 feet wide C C C C From 30 to < 50 feet wide D D D D From 10 to < 30 feet wide E E E E < 10 feet wide or no trees 20. Buffer Structure – streamside area metric (skip for Tidal Marsh Streams) Consider for left bank (LB) and right bank (RB) for Metric 19 (“Vegetated” Buffer Width). LB RB A A Mature forest B B Non-mature woody vegetation or modified vegetation structure C C Herbaceous vegetation with or without a strip of trees < 10 feet wide D D Maintained shrubs E E Little or no vegetation 21. Buffer Stressors – streamside area metric (skip for Tidal Marsh Streams) Check all appropriate boxes for left bank (LB) and right bank (RB). Indicate if listed stressor abuts stream (Abuts), does not abut but is within 30 feet of stream (< 30 feet), or is between 30 to 50 feet of stream (30-50 feet). If none of the following stressors occurs on either bank, check here and skip to Metric 22: Abuts < 30 feet 30-50 feet LB RB LB RB LB RB A A A A A A Row crops B B B B B B Maintained turf C C C C C C Pasture (no livestock)/commercial horticulture D D D D D D Pasture (active livestock use) 22. Stem Density – streamside area metric (skip for Tidal Marsh Streams) Consider for left bank (LB) and right bank (RB) for Metric 19 (“Wooded” Buffer Width). LB RB A A Medium to high stem density B B Low stem density C C No wooded riparian buffer or predominantly herbaceous species or bare ground 23. Continuity of Vegetated Buffer – streamside area metric (skip for Tidal Marsh Streams) Consider whether vegetated buffer is continuous along stream (parallel). Breaks are areas lacking vegetation > 10 feet wide. LB RB A A The total length of buffer breaks is < 25 percent. B B The total length of buffer breaks is between 25 and 50 percent. C C The total length of buffer breaks is > 50 percent. 24. Vegetative Composition – streamside area metric (skip for Tidal Marsh Streams) Evaluate the dominant vegetation within 100 feet of each bank or to the edge of the watershed (whichever comes first) as it contribute s to assessment reach habitat. LB RB A A Vegetation is close to undisturbed in species present and their proportions. Lower strata composed of native species, with non-native invasive species absent or sparse. B B Vegetation indicates disturbance in terms of species diversity or proportions, but is still largely composed of native species. This may include communities of weedy native species that develop after clear -cutting or clearing or communities with non-native invasive species present, but not dominant, over a large portion of the expected strata or communities missing understory but retaining canopy trees. C C Vegetation is severely disturbed in terms of species diversity or proport ions. Mature canopy is absent or communities with non-native invasive species dominant over a large portion of expected strata or communities composed of planted stands of non-characteristic species or communities inappropriately composed of a single species or no vegetation. 25. Conductivity – assessment reach metric (skip for all Coastal Plain streams) 25a. Yes No Was conductivity measurement recorded? If No, select one of the following reasons. No Water Other: 25b. Check the box corresponding to the conductivity measurement (units of microsiemens per centimeter). A < 46 B 46 to < 67 C 67 to < 79 D 79 to < 230 E ≥ 230 Notes/Sketch: Draft NC SAM Stream Rating Sheet Accompanies User Manual Version 2.1 Stream Site Name Horne Creek Tribs Mitigation Project Date of Assessment 5-9-2018 Stream Category Pb1 Assessor Name/Organization J. Morgan Notes of Field Assessment Form (Y/N) NO Presence of regulatory considerations (Y/N) NO Additional stream information/supplementary measurements included (Y/N) NO NC SAM feature type (perennial, intermittent, Tidal Marsh Stream) Intermittent Function Class Rating Summary USACE/ All Streams NCDWR Intermittent (1) Hydrology LOW LOW (2) Baseflow HIGH HIGH (2) Flood Flow LOW LOW (3) Streamside Area Attenuation LOW LOW (4) Floodplain Access MEDIUM MEDIUM (4) Wooded Riparian Buffer LOW LOW (4) Microtopography NA NA (3) Stream Stability LOW LOW (4) Channel Stability HIGH HIGH (4) Sediment Transport LOW LOW (4) Stream Geomorphology LOW LOW (2) Stream/Intertidal Zone Interaction NA NA (2) Longitudinal Tidal Flow NA NA (2) Tidal Marsh Stream Stability NA NA (3) Tidal Marsh Channel Stability NA NA (3) Tidal Marsh Stream Geomorphology NA NA (1) Water Quality MEDIUM MEDIUM (2) Baseflow HIGH HIGH (2) Streamside Area Vegetation LOW LOW (3) Upland Pollutant Filtration LOW LOW (3) Thermoregulation MEDIUM MEDIUM (2) Indicators of Stressors YES YES (2) Aquatic Life Tolerance HIGH NA (2) Intertidal Zone Filtration NA NA (1) Habitat LOW LOW (2) In-stream Habitat LOW MEDIUM (3) Baseflow HIGH HIGH (3) Substrate LOW LOW (3) Stream Stability MEDIUM MEDIUM (3) In-stream Habitat LOW HIGH (2) Stream-side Habitat LOW LOW (3) Stream-side Habitat MEDIUM MEDIUM (3) Thermoregulation LOW LOW (2) Tidal Marsh In-stream Habitat NA NA (3) Flow Restriction NA NA (3) Tidal Marsh Stream Stability NA NA (4) Tidal Marsh Channel Stability NA NA (4) Tidal Marsh Stream Geomorphology NA NA (3) Tidal Marsh In-stream Habitat NA NA (2) Intertidal Zone NA NA Overall LOW LOW NC SAM FIELD ASSESSMENT FORM Accompanies User Manual Version 2.1 USACE AID #: NCDWR #: INSTRUCTIONS: Attach a sketch of the assessment area and photographs. Attach a copy of the USGS 7.5-minute topographic quadrangle, and circle the location of the stream reach under evaluation. If multiple stream reaches will be evaluated on the same prope rty, identify and number all reaches on the attached map, and include a separate form for each reach. See the NC SAM User Manual for detailed descriptions and explanations of requested information. Record in the “Notes/Sketch” section if supplementary measurements were performed. See the NC SAM User Manual for examples of additional measurements that may be relevant. NOTE EVIDENCE OF STRESSORS AFFECTING THE ASSESSMENT AREA (do not need to be within the assessment area). PROJECT/SITE INFORMATION: 1. Project name (if any): Horne Creek Tribs Mitigation Project 2. Date of evaluation: 5-9-2018 3. Applicant/owner name: Water & Land Solutions 4. Assessor name/organization: J. Morgan 5. County: Surry 6. Nearest named water body on USGS 7.5-minute quad: Ararat River 7. River basin: Yadkin-PeeDee 8. Site coordinates (decimal degrees, at lower end of assessment reach): 36.171541º -80.300730º STREAM INFORMATION: (depth and width can be approximations) 9. Site number (show on attached map): R4 10. Length of assessment reach evaluated (feet): 860 11. Channel depth from bed (in riffle, if present) to top of bank (feet): 2.9 Unable to assess channel depth. 12. Channel width at top of bank (feet): 12.9 13. Is assessment reach a swamp steam? Yes No 14. Feature type: Perennial flow Intermittent flow Tidal Marsh Stream STREAM CATEGORY INFORMATION: 15. NC SAM Zone: Mountains (M) Piedmont (P) Inner Coastal Plain (I) Outer Coastal Plain (O) 16. Estimated geomorphic 19 valley shape (skip for Tidal Marsh Stream): A B (more sinuous stream, flatter valley slope) (less sinuous stream, steeper valley slope) 17. Watershed size: (skip Size 1 (< 0.1 mi2) Size 2 (0.1 to < 0.5 mi2) Size 3 (0.5 to < 5 mi2) Size 4 (≥ 5 mi2) for Tidal Marsh Stream) ADDITIONAL INFORMATION: 18. Were regulatory considerations evaluated? Yes No If Yes, check all that apply to the assessment area. Section 10 water Classified Trout Waters Water Supply Watershed (I II III IV V) Essential Fish Habitat Primary Nursery Area High Quality Waters/Outstanding Resource Waters Publicly owned property NCDWR Riparian buffer rule in effect Nutrient Sensitive Waters Anadromous fish 303(d) List CAMA Area of Environmental Concern (AEC) Documented presence of a federal and/or state listed protected species within the assessment area. List species: Designated Critical Habitat (list species) 19. Are additional stream information/supplementary measurements included in “Notes/Sketch” section or attached? Yes No 1. Channel Water – assessment reach metric (skip for Size 1 streams and Tidal Marsh Streams) A Water throughout assessment reach. B No flow, water in pools only. C No water in assessment reach. 2. Evidence of Flow Restriction – assessment reach metric A At least 10% of assessment reach in-stream habitat or riffle-pool sequence is severely affected by a flow restriction or fill to the point of obstructing flow or a channel choked with aquatic macrophytes or ponded water or impoundment on flood or ebb within the assessment reach (examples: undersized or perched culverts, causeways that constrict the channel, tidal gates , debris jams, beaver dams). B Not A 3. Feature Pattern – assessment reach metric A A majority of the assessment reach has altered pattern (examples: straightening, modification above or below culvert). B Not A 4. Feature Longitudinal Profile – assessment reach metric A Majority of assessment reach has a substantially altered stream profile (examples: channel down-cutting, existing damming, over widening, active aggradation, dredging, and excavation where appropriate channel profile has not reformed from any of these disturbances). B Not A 5. Signs of Active Instability – assessment reach metric Consider only current instability, not past events from which the stream has currently recovered. Examples of instability include active bank failure, active channel down-cutting (head-cut), active widening, and artificial hardening (such as concrete, gabion, rip-rap). A < 10% of channel unstable B 10 to 25% of channel unstable C > 25% of channel unstable 6. Streamside Area Interaction – streamside area metric Consider for the Left Bank (LB) and the Right Bank (RB). LB RB A A Little or no evidence of conditions that adversely affect reference interaction B B Moderate evidence of conditions (examples: berms, levees, down-cutting, aggradation, dredging) that adversely affect reference interaction (examples: limited streamside area access , disruption of flood flows through streamside area, leaky or intermittent bulkheads, causeways with floodplain constriction, minor ditching [including mosquito ditching]) C C Extensive evidence of conditions that adversely affect reference interaction (little to no floodplain/intertidal zone access [examples: causeways with floodplain and channel constriction, bulkheads , retaining walls, fill, stream incision, disruption of flood flows through streamside area] or too much floodplain/intertidal zone access [examples: impoundments, intensive mosquito ditching]) or floodplain/intertidal zone unnaturally absent or assessment reach is a man-made feature on an interstream divide 7. Water Quality Stressors – assessment reach/intertidal zone metric Check all that apply. A Discolored water in stream or intertidal zone (milky white, blue, unnatural water discoloration, oil sheen, stream foam) B Excessive sedimentation (burying of stream features or intertidal zone) C Noticeable evidence of pollutant discharges entering the assessment reach and causing a water quality problem D Odor (not including natural sulfide odors) E Current published or collected data indicating degraded water quality in the assessment reach. Cite source in “Notes/Sketch” section. F Livestock with access to stream or intertidal zone G Excessive algae in stream or intertidal zone H Degraded marsh vegetation in the intertidal zone (removal, burning, regular mowing, destruction, etc) I Other: (explain in “Notes/Sketch” section) J Little to no stressors 8. Recent Weather – watershed metric (skip for Tidal Marsh Streams) For Size 1 or 2 streams, D1 drought or higher is considered a drought; for Size 3 or 4 streams, D2 drought or higher is considered a drought. A Drought conditions and no rainfall or rainfall not exceeding 1 inch within the last 48 hours B Drought conditions and rainfall exceeding 1 inch within the last 48 hours C No drought conditions 9. Large or Dangerous Stream – assessment reach metric Yes No Is stream is too large or dangerous to assess? If Yes, skip to Metric 13 (Streamside Area Ground Surface Condition). 10. Natural In-stream Habitat Types – assessment reach metric 10a. Yes No Degraded in-stream habitat over majority of the assessment reach (examples of stressors include excessive sedimentation, mining, excavation, in-stream hardening [for example, rip-rap], recent dredging, and snagging) (evaluate for Size 4 Coastal Plain streams only, then skip to Metric 12) 10b. Check all that occur (occurs if > 5% coverage of assessment reach) (skip for Size 4 Coastal Plain streams) A Multiple aquatic macrophytes and aquatic mosses (include liverworts, lichens, and algal mats) B Multiple sticks and/or leaf packs and/or emergent vegetation C Multiple snags and logs (including lap trees) D 5% undercut banks and/or root mats and/or roots in banks extend to the normal wetted perimeter E Little or no habitat F 5% oysters or other natural hard bottoms G Submerged aquatic vegetation H Low-tide refugia (pools) I Sand bottom J 5% vertical bank along the marsh K Little or no habitat *********************************REMAINING QUESTIONS ARE NOT APPLICABLE FOR TIDAL MARSH STREAMS**************************** 11. Bedform and Substrate – assessment reach metric (skip for Size 4 Coastal Plain streams and Tidal Marsh Streams) 11a. Yes No Is assessment reach in a natural sand-bed stream? (skip for Coastal Plain streams) 11b. Bedform evaluated. Check the appropriate box(es). A Riffle-run section (evaluate 11c) B Pool-glide section (evaluate 11d) C Natural bedform absent (skip to Metric 12, Aquatic Life) 11c. In riffle sections, check all that occur below the normal wetted perimeter of the assessment reach – whether or not submerged. Check at least one box in each row (skip for Size 4 Coastal Plain streams and Tidal Marsh Streams). Not Present (NP) = absent, Rare (R) = present but < 10%, Common (C) = > 10-40%, Abundant (A) = > 40-70%, Predominant (P) = > 70%. Cumulative percentages should not exceed 100% for each assessment reach. NP R C A P Bedrock/saprolite Boulder (256 – 4096 mm) Cobble (64 – 256 mm) Gravel (2 – 64 mm) Sand (.062 – 2 mm) Silt/clay (< 0.062 mm) Detritus Artificial (rip-rap, concrete, etc.) 11d. Yes No Are pools filled with sediment? (skip for Size 4 Coastal Plain streams and Tidal Marsh Streams) Check for Tidal Marsh Streams Only 12. Aquatic Life – assessment reach metric (skip for Tidal Marsh Streams) 12a. Yes No Was an in-stream aquatic life assessment performed as described in the User Manual? If No, select one of the following reasons and skip to Metric 13. No Water Other: 12b. Yes No Are aquatic organisms present in the assessment reach (look in riffles, pools, then snags)? If Yes, check all that apply. If No, skip to Metric 13. 1 >1 Numbers over columns refer to “individuals” for Size 1 and 2 streams and “taxa” for Size 3 and 4 streams. Adult frogs Aquatic reptiles Aquatic macrophytes and aquatic mosses (include liverworts, lichens, and algal mats) Beetles Caddisfly larvae (T) Asian clam (Corbicula) Crustacean (isopod/amphipod/crayfish/shrimp) Damselfly and dragonfly larvae Dipterans Mayfly larvae (E) Megaloptera (alderfly, fishfly, dobsonfly larvae) Midges/mosquito larvae Mosquito fish (Gambusia) or mud minnows (Umbra pygmaea) Mussels/Clams (not Corbicula) Other fish Salamanders/tadpoles Snails Stonefly larvae (P) Tipulid larvae Worms/leeches 13. Streamside Area Ground Surface Condition – streamside area metric (skip for Tidal Marsh Streams and B valley types) Consider for the Left Bank (LB) and the Right Bank (RB). Consider storage capacity with regard to both overbank flow and upland runoff. LB RB A A Little or no alteration to water storage capacity over a majority of the streamside area B B Moderate alteration to water storage capacity over a majority of the streamside area C C Severe alteration to water storage capacity over a majority of the streamside area (examples: ditches, fill, soil compaction, livestock disturbance, buildings, man-made levees, drainage pipes) 14. Streamside Area Water Storage – streamside area metric (skip for Size 1 streams, Tidal Marsh Streams, and B valley types) Consider for the Left Bank (LB) and the Right Bank (RB) of the streamside area. LB RB A A Majority of streamside area with depressions able to pond water ≥ 6 inches deep B B Majority of streamside area with depressions able to pond water 3 to 6 inches deep C C Majority of streamside area with depressions able to pond water < 3 inches deep 15. Wetland Presence – streamside area metric (skip for Tidal Marsh Streams) Consider for the Left Bank (LB) and the Right Bank (RB). Do not consider wetlands outside of the streamside area or within the normal wetted perimeter of assessment reach. LB RB Y Y Are wetlands present in the streamside area? N N 16. Baseflow Contributors – assessment reach metric (skip for Size 4 streams and Tidal Marsh Streams) Check all contributors within the assessment reach or within view of and draining to the assessment reach. A Streams and/or springs (jurisdictional discharges) B Ponds (include wet detention basins; do not include sediment basins or dry detention basins) C Obstruction passing flow during low-flow periods within the assessment area (beaver dam, leaky dam, bottom-release dam, weir) D Evidence of bank seepage or sweating (iron in water indicates seepage) E Stream bed or bank soil reduced (dig through deposited sediment if present) F None of the above 17. Baseflow Detractors – assessment area metric (skip for Tidal Marsh Streams) Check all that apply. A Evidence of substantial water withdrawals from the assessment reach (includes areas excavated for pump installation) B Obstruction not passing flow during low-flow periods affecting the assessment reach (ex: watertight dam, sediment deposit) C Urban stream (≥ 24% impervious surface for watershed) D Evidence that the streamside area has been modified resulting i n accelerated drainage into the assessment reach E Assessment reach relocated to valley edge F None of the above 18. Shading – assessment reach metric (skip for Tidal Marsh Streams) Consider aspect. Consider “leaf-on” condition. A Stream shading is appropriate for stream category (may include gaps associated with natural processes) B Degraded (example: scattered trees) C Stream shading is gone or largely absent 19. Buffer Width – streamside area metric (skip for Tidal Marsh Streams) Consider “vegetated buffer” and “wooded buffer” separately for left bank (LB) and right bank (RB) starting at the top of bank out to the first break. Vegetated Wooded LB RB LB RB A A A A ≥ 100 feet wide or extends to the edge of the watershed B B B B From 50 to < 100 feet wide C C C C From 30 to < 50 feet wide D D D D From 10 to < 30 feet wide E E E E < 10 feet wide or no trees 20. Buffer Structure – streamside area metric (skip for Tidal Marsh Streams) Consider for left bank (LB) and right bank (RB) for Metric 19 (“Vegetated” Buffer Width). LB RB A A Mature forest B B Non-mature woody vegetation or modified vegetation structure C C Herbaceous vegetation with or without a strip of trees < 10 feet wide D D Maintained shrubs E E Little or no vegetation 21. Buffer Stressors – streamside area metric (skip for Tidal Marsh Streams) Check all appropriate boxes for left bank (LB) and right bank (RB). Indicate if listed stressor abuts stream (Abuts), does not abut but is within 30 feet of stream (< 30 feet), or is between 30 to 50 feet of stream (30-50 feet). If none of the following stressors occurs on either bank, check here and skip to Metric 22: Abuts < 30 feet 30-50 feet LB RB LB RB LB RB A A A A A A Row crops B B B B B B Maintained turf C C C C C C Pasture (no livestock)/commercial horticulture D D D D D D Pasture (active livestock use) 22. Stem Density – streamside area metric (skip for Tidal Marsh Streams) Consider for left bank (LB) and right bank (RB) for Metric 19 (“Wooded” Buffer Width). LB RB A A Medium to high stem density B B Low stem density C C No wooded riparian buffer or predominantly herbaceous species or bare ground 23. Continuity of Vegetated Buffer – streamside area metric (skip for Tidal Marsh Streams) Consider whether vegetated buffer is continuous along stream (parallel). Breaks are areas lacking vegetation > 10 feet wide. LB RB A A The total length of buffer breaks is < 25 percent. B B The total length of buffer breaks is between 25 and 50 percent. C C The total length of buffer breaks is > 50 percent. 24. Vegetative Composition – streamside area metric (skip for Tidal Marsh Streams) Evaluate the dominant vegetation within 100 feet of each bank or to the edge of the watershed (whichever comes first) as it contribute s to assessment reach habitat. LB RB A A Vegetation is close to undisturbed in species present and their proportions. Lower strata composed of native species, with non-native invasive species absent or sparse. B B Vegetation indicates disturbance in terms of species diversity or proportions, but is still largely composed of native species. This may include communities of weedy native species that develop after clear -cutting or clearing or communities with non-native invasive species present, but not dominant, over a large portion of the expected strata or communities missing understory but retaining canopy trees. C C Vegetation is severely disturbed in terms of species diversity or proport ions. Mature canopy is absent or communities with non-native invasive species dominant over a large portion of expected strata or communities composed of planted stands of non-characteristic species or communities inappropriately composed of a single species or no vegetation. 25. Conductivity – assessment reach metric (skip for all Coastal Plain streams) 25a. Yes No Was conductivity measurement recorded? If No, select one of the following reasons. No Water Other: 25b. Check the box corresponding to the conductivity measurement (units of microsiemens per centimeter). A < 46 B 46 to < 67 C 67 to < 79 D 79 to < 230 E ≥ 230 Notes/Sketch: Draft NC SAM Stream Rating Sheet Accompanies User Manual Version 2.1 Stream Site Name Horne Creek Tribs Mitigation Project Date of Assessment 5-9-2018 Stream Category Pb2 Assessor Name/Organization J. Morgan Notes of Field Assessment Form (Y/N) NO Presence of regulatory considerations (Y/N) NO Additional stream information/supplementary measurements included (Y/N) NO NC SAM feature type (perennial, intermittent, Tidal Marsh Stream) Perennial Function Class Rating Summary USACE/ All Streams NCDWR Intermittent (1) Hydrology MEDIUM (2) Baseflow MEDIUM (2) Flood Flow MEDIUM (3) Streamside Area Attenuation MEDIUM (4) Floodplain Access MEDIUM (4) Wooded Riparian Buffer HIGH (4) Microtopography NA (3) Stream Stability MEDIUM (4) Channel Stability MEDIUM (4) Sediment Transport HIGH (4) Stream Geomorphology MEDIUM (2) Stream/Intertidal Zone Interaction NA (2) Longitudinal Tidal Flow NA (2) Tidal Marsh Stream Stability NA (3) Tidal Marsh Channel Stability NA (3) Tidal Marsh Stream Geomorphology NA (1) Water Quality LOW (2) Baseflow MEDIUM (2) Streamside Area Vegetation MEDIUM (3) Upland Pollutant Filtration LOW (3) Thermoregulation HIGH (2) Indicators of Stressors YES (2) Aquatic Life Tolerance LOW (2) Intertidal Zone Filtration NA (1) Habitat HIGH (2) In-stream Habitat HIGH (3) Baseflow MEDIUM (3) Substrate HIGH (3) Stream Stability MEDIUM (3) In-stream Habitat HIGH (2) Stream-side Habitat HIGH (3) Stream-side Habitat MEDIUM (3) Thermoregulation HIGH (2) Tidal Marsh In-stream Habitat NA (3) Flow Restriction NA (3) Tidal Marsh Stream Stability NA (4) Tidal Marsh Channel Stability NA (4) Tidal Marsh Stream Geomorphology NA (3) Tidal Marsh In-stream Habitat NA (2) Intertidal Zone NA Overall MEDIUM NC SAM FIELD ASSESSMENT FORM Accompanies User Manual Version 2.1 USACE AID #: NCDWR #: INSTRUCTIONS: Attach a sketch of the assessment area and photographs. Attach a copy of the USGS 7.5-minute topographic quadrangle, and circle the location of the stream reach under evaluation. If multiple stream reaches will be evaluated on the same prope rty, identify and number all reaches on the attached map, and include a separate form for each reach. See the NC SAM User Manual for detailed descriptions and explanations of requested information. Record in the “Notes/Sketch” section if supplementary measurements were performed. See the NC SAM User Manual for examples of additional measurements that may be relevant. NOTE EVIDENCE OF STRESSORS AFFECTING THE ASSESSMENT AREA (do not need to be within the assessment area). PROJECT/SITE INFORMATION: 1. Project name (if any): Horne Creek Tribs Mitigation Project 2. Date of evaluation: 5-9-2018 3. Applicant/owner name: Water & Land Solutions 4. Assessor name/organization: J. Morgan 5. County: Surry 6. Nearest named water body on USGS 7.5-minute quad: Ararat River 7. River basin: Yadkin-PeeDee 8. Site coordinates (decimal degrees, at lower end of assessment reach): 36.170456º -80.301271º STREAM INFORMATION: (depth and width can be approximations) 9. Site number (show on attached map): R4A 10. Length of assessment reach evaluated (feet): 200 11. Channel depth from bed (in riffle, if present) to top of bank (feet): 1.4 Unable to assess channel depth. 12. Channel width at top of bank (feet): 8.1 13. Is assessment reach a swamp steam? Yes No 14. Feature type: Perennial flow Intermittent flow Tidal Marsh Stream STREAM CATEGORY INFORMATION: 15. NC SAM Zone: Mountains (M) Piedmont (P) Inner Coastal Plain (I) Outer Coastal Plain (O) 16. Estimated geomorphic 19 valley shape (skip for Tidal Marsh Stream): A B (more sinuous stream, flatter valley slope) (less sinuous stream, steeper valley slope) 17. Watershed size: (skip Size 1 (< 0.1 mi2) Size 2 (0.1 to < 0.5 mi2) Size 3 (0.5 to < 5 mi2) Size 4 (≥ 5 mi2) for Tidal Marsh Stream) ADDITIONAL INFORMATION: 18. Were regulatory considerations evaluated? Yes No If Yes, check all that apply to the assessment area. Section 10 water Classified Trout Waters Water Supply Watershed (I II III IV V) Essential Fish Habitat Primary Nursery Area High Quality Waters/Outstanding Resource Waters Publicly owned property NCDWR Riparian buffer rule in effect Nutrient Sensitive Waters Anadromous fish 303(d) List CAMA Area of Environmental Concern (AEC) Documented presence of a federal and/or state listed protected species within the assessment area. List species: Designated Critical Habitat (list species) 19. Are additional stream information/supplementary measurements included in “Notes/Sketch” section or attached? Yes No 1. Channel Water – assessment reach metric (skip for Size 1 streams and Tidal Marsh Streams) A Water throughout assessment reach. B No flow, water in pools only. C No water in assessment reach. 2. Evidence of Flow Restriction – assessment reach metric A At least 10% of assessment reach in-stream habitat or riffle-pool sequence is severely affected by a flow restriction or fill to the point of obstructing flow or a channel choked with aquatic macrophytes or ponded water or impoundment on flood or ebb within the assessment reach (examples: undersized or perched culverts, causeways that constrict the channel, tidal gates , debris jams, beaver dams). B Not A 3. Feature Pattern – assessment reach metric A A majority of the assessment reach has altered pattern (examples: straightening, modification above or below culvert). B Not A 4. Feature Longitudinal Profile – assessment reach metric A Majority of assessment reach has a substantially altered stream profile (examples: channel down-cutting, existing damming, over widening, active aggradation, dredging, and excavation where appropriate channel profile has not reformed from any of these disturbances). B Not A 5. Signs of Active Instability – assessment reach metric Consider only current instability, not past events from which the stream has currently recovered. Examples of instability include active bank failure, active channel down-cutting (head-cut), active widening, and artificial hardening (such as concrete, gabion, rip-rap). A < 10% of channel unstable B 10 to 25% of channel unstable C > 25% of channel unstable 6. Streamside Area Interaction – streamside area metric Consider for the Left Bank (LB) and the Right Bank (RB). LB RB A A Little or no evidence of conditions that adversely affect reference interaction B B Moderate evidence of conditions (examples: berms, levees, down-cutting, aggradation, dredging) that adversely affect reference interaction (examples: limited streamside area access , disruption of flood flows through streamside area, leaky or intermittent bulkheads, causeways with floodplain constriction, minor ditching [including mosquito ditching]) C C Extensive evidence of conditions that adversely affect reference interaction (little to no floodplain/intertidal zone access [examples: causeways with floodplain and channel constriction, bulkheads , retaining walls, fill, stream incision, disruption of flood flows through streamside area] or too much floodplain/intertidal zone access [examples: impoundments, intensive mosquito ditching]) or floodplain/intertidal zone unnaturally absent or assessment reach is a man-made feature on an interstream divide 7. Water Quality Stressors – assessment reach/intertidal zone metric Check all that apply. A Discolored water in stream or intertidal zone (milky white, blue, unnatural water discoloration, oil sheen, stream foam) B Excessive sedimentation (burying of stream features or intertidal zone) C Noticeable evidence of pollutant discharges entering the assessment reach and causing a water quality problem D Odor (not including natural sulfide odors) E Current published or collected data indicating degraded water quality in the assessment reach. Cite source in “Notes/Sketch” section. F Livestock with access to stream or intertidal zone G Excessive algae in stream or intertidal zone H Degraded marsh vegetation in the intertidal zone (removal, burning, regular mowing, destruction, etc) I Other: (explain in “Notes/Sketch” section) J Little to no stressors 8. Recent Weather – watershed metric (skip for Tidal Marsh Streams) For Size 1 or 2 streams, D1 drought or higher is considered a drought; for Size 3 or 4 streams, D2 drought or higher is considered a drought. A Drought conditions and no rainfall or rainfall not exceeding 1 inch within the last 48 hours B Drought conditions and rainfall exceeding 1 inch within the last 48 hours C No drought conditions 9. Large or Dangerous Stream – assessment reach metric Yes No Is stream is too large or dangerous to assess? If Yes, skip to Metric 13 (Streamside Area Ground Surface Condition). 10. Natural In-stream Habitat Types – assessment reach metric 10a. Yes No Degraded in-stream habitat over majority of the assessment reach (examples of stressors include excessive sedimentation, mining, excavation, in-stream hardening [for example, rip-rap], recent dredging, and snagging) (evaluate for Size 4 Coastal Plain streams only, then skip to Metric 12) 10b. Check all that occur (occurs if > 5% coverage of assessment reach) (skip for Size 4 Coastal Plain streams) A Multiple aquatic macrophytes and aquatic mosses (include liverworts, lichens, and algal mats) B Multiple sticks and/or leaf packs and/or emergent vegetation C Multiple snags and logs (including lap trees) D 5% undercut banks and/or root mats and/or roots in banks extend to the normal wetted perimeter E Little or no habitat F 5% oysters or other natural hard bottoms G Submerged aquatic vegetation H Low-tide refugia (pools) I Sand bottom J 5% vertical bank along the marsh K Little or no habitat *********************************REMAINING QUESTIONS ARE NOT APPLICABLE FOR TIDAL MARSH STREAMS**************************** 11. Bedform and Substrate – assessment reach metric (skip for Size 4 Coastal Plain streams and Tidal Marsh Streams) 11a. Yes No Is assessment reach in a natural sand-bed stream? (skip for Coastal Plain streams) 11b. Bedform evaluated. Check the appropriate box(es). A Riffle-run section (evaluate 11c) B Pool-glide section (evaluate 11d) C Natural bedform absent (skip to Metric 12, Aquatic Life) 11c. In riffle sections, check all that occur below the normal wetted perimeter of the assessment reach – whether or not submerged. Check at least one box in each row (skip for Size 4 Coastal Plain streams and Tidal Marsh Streams). Not Present (NP) = absent, Rare (R) = present but < 10%, Common (C) = > 10-40%, Abundant (A) = > 40-70%, Predominant (P) = > 70%. Cumulative percentages should not exceed 100% for each assessment reach. NP R C A P Bedrock/saprolite Boulder (256 – 4096 mm) Cobble (64 – 256 mm) Gravel (2 – 64 mm) Sand (.062 – 2 mm) Silt/clay (< 0.062 mm) Detritus Artificial (rip-rap, concrete, etc.) 11d. Yes No Are pools filled with sediment? (skip for Size 4 Coastal Plain streams and Tidal Marsh Streams) Check for Tidal Marsh Streams Only 12. Aquatic Life – assessment reach metric (skip for Tidal Marsh Streams) 12a. Yes No Was an in-stream aquatic life assessment performed as described in the User Manual? If No, select one of the following reasons and skip to Metric 13. No Water Other: 12b. Yes No Are aquatic organisms present in the assessment reach (look in riffles, pools, then snags)? If Yes, check all that apply. If No, skip to Metric 13. 1 >1 Numbers over columns refer to “individuals” for Size 1 and 2 streams and “taxa” for Size 3 and 4 streams. Adult frogs Aquatic reptiles Aquatic macrophytes and aquatic mosses (include liverworts, lichens, and algal mats) Beetles Caddisfly larvae (T) Asian clam (Corbicula) Crustacean (isopod/amphipod/crayfish/shrimp) Damselfly and dragonfly larvae Dipterans Mayfly larvae (E) Megaloptera (alderfly, fishfly, dobsonfly larvae) Midges/mosquito larvae Mosquito fish (Gambusia) or mud minnows (Umbra pygmaea) Mussels/Clams (not Corbicula) Other fish Salamanders/tadpoles Snails Stonefly larvae (P) Tipulid larvae Worms/leeches 13. Streamside Area Ground Surface Condition – streamside area metric (skip for Tidal Marsh Streams and B valley types) Consider for the Left Bank (LB) and the Right Bank (RB). Consider storage capacity with regard to both overbank flow and upland runoff. LB RB A A Little or no alteration to water storage capacity over a majority of the streamside area B B Moderate alteration to water storage capacity over a majority of the streamside area C C Severe alteration to water storage capacity over a majority of the streamside area (examples: ditches, fill, soil compaction, livestock disturbance, buildings, man-made levees, drainage pipes) 14. Streamside Area Water Storage – streamside area metric (skip for Size 1 streams, Tidal Marsh Streams, and B valley types) Consider for the Left Bank (LB) and the Right Bank (RB) of the streamside area. LB RB A A Majority of streamside area with depressions able to pond water ≥ 6 inches deep B B Majority of streamside area with depressions able to pond water 3 to 6 inches deep C C Majority of streamside area with depressions able to pond water < 3 inches deep 15. Wetland Presence – streamside area metric (skip for Tidal Marsh Streams) Consider for the Left Bank (LB) and the Right Bank (RB). Do not consider wetlands outside of the streamside area or within the normal wetted perimeter of assessment reach. LB RB Y Y Are wetlands present in the streamside area? N N 16. Baseflow Contributors – assessment reach metric (skip for Size 4 streams and Tidal Marsh Streams) Check all contributors within the assessment reach or within view of and draining to the assessment reach. A Streams and/or springs (jurisdictional discharges) B Ponds (include wet detention basins; do not include sediment basins or dry detention basins) C Obstruction passing flow during low-flow periods within the assessment area (beaver dam, leaky dam, bottom-release dam, weir) D Evidence of bank seepage or sweating (iron in water indicates seepage) E Stream bed or bank soil reduced (dig through deposited sediment if present) F None of the above 17. Baseflow Detractors – assessment area metric (skip for Tidal Marsh Streams) Check all that apply. A Evidence of substantial water withdrawals from the assessment reach (includes areas excavated for pump installation) B Obstruction not passing flow during low-flow periods affecting the assessment reach (ex: watertight dam, sediment deposit) C Urban stream (≥ 24% impervious surface for watershed) D Evidence that the streamside area has been modified resulting i n accelerated drainage into the assessment reach E Assessment reach relocated to valley edge F None of the above 18. Shading – assessment reach metric (skip for Tidal Marsh Streams) Consider aspect. Consider “leaf-on” condition. A Stream shading is appropriate for stream category (may include gaps associated with natural processes) B Degraded (example: scattered trees) C Stream shading is gone or largely absent 19. Buffer Width – streamside area metric (skip for Tidal Marsh Streams) Consider “vegetated buffer” and “wooded buffer” separately for left bank (LB) and right bank (RB) starting at the top of bank out to the first break. Vegetated Wooded LB RB LB RB A A A A ≥ 100 feet wide or extends to the edge of the watershed B B B B From 50 to < 100 feet wide C C C C From 30 to < 50 feet wide D D D D From 10 to < 30 feet wide E E E E < 10 feet wide or no trees 20. Buffer Structure – streamside area metric (skip for Tidal Marsh Streams) Consider for left bank (LB) and right bank (RB) for Metric 19 (“Vegetated” Buffer Width). LB RB A A Mature forest B B Non-mature woody vegetation or modified vegetation structure C C Herbaceous vegetation with or without a strip of trees < 10 feet wide D D Maintained shrubs E E Little or no vegetation 21. Buffer Stressors – streamside area metric (skip for Tidal Marsh Streams) Check all appropriate boxes for left bank (LB) and right bank (RB). Indicate if listed stressor abuts stream (Abuts), does not abut but is within 30 feet of stream (< 30 feet), or is between 30 to 50 feet of stream (30-50 feet). If none of the following stressors occurs on either bank, check here and skip to Metric 22: Abuts < 30 feet 30-50 feet LB RB LB RB LB RB A A A A A A Row crops B B B B B B Maintained turf C C C C C C Pasture (no livestock)/commercial horticulture D D D D D D Pasture (active livestock use) 22. Stem Density – streamside area metric (skip for Tidal Marsh Streams) Consider for left bank (LB) and right bank (RB) for Metric 19 (“Wooded” Buffer Width). LB RB A A Medium to high stem density B B Low stem density C C No wooded riparian buffer or predominantly herbaceous species or bare ground 23. Continuity of Vegetated Buffer – streamside area metric (skip for Tidal Marsh Streams) Consider whether vegetated buffer is continuous along stream (parallel). Breaks are areas lacking vegetation > 10 feet wide. LB RB A A The total length of buffer breaks is < 25 percent. B B The total length of buffer breaks is between 25 and 50 percent. C C The total length of buffer breaks is > 50 percent. 24. Vegetative Composition – streamside area metric (skip for Tidal Marsh Streams) Evaluate the dominant vegetation within 100 feet of each bank or to the edge of the watershed (whichever comes first) as it contribute s to assessment reach habitat. LB RB A A Vegetation is close to undisturbed in species present and their proportions. Lower strata composed of native species, with non-native invasive species absent or sparse. B B Vegetation indicates disturbance in terms of species diversity or proportions, but is still largely composed of native species. This may include communities of weedy native species that develop after clear -cutting or clearing or communities with non-native invasive species present, but not dominant, over a large portion of the expected strata or communities missing understory but retaining canopy trees. C C Vegetation is severely disturbed in terms of species diversity or proport ions. Mature canopy is absent or communities with non-native invasive species dominant over a large portion of expected strata or communities composed of planted stands of non-characteristic species or communities inappropriately composed of a single species or no vegetation. 25. Conductivity – assessment reach metric (skip for all Coastal Plain streams) 25a. Yes No Was conductivity measurement recorded? If No, select one of the following reasons. No Water Other: 25b. Check the box corresponding to the conductivity measurement (units of microsiemens per centimeter). A < 46 B 46 to < 67 C 67 to < 79 D 79 to < 230 E ≥ 230 Notes/Sketch: Draft NC SAM Stream Rating Sheet Accompanies User Manual Version 2.1 Stream Site Name Horne Creek Tribs Mitigation Project Date of Assessment 5-9-2018 Stream Category Pb1 Assessor Name/Organization J. Morgan Notes of Field Assessment Form (Y/N) NO Presence of regulatory considerations (Y/N) NO Additional stream information/supplementary measurements included (Y/N) NO NC SAM feature type (perennial, intermittent, Tidal Marsh Stream) Perennial Function Class Rating Summary USACE/ All Streams NCDWR Intermittent (1) Hydrology HIGH (2) Baseflow HIGH (2) Flood Flow HIGH (3) Streamside Area Attenuation HIGH (4) Floodplain Access HIGH (4) Wooded Riparian Buffer HIGH (4) Microtopography NA (3) Stream Stability HIGH (4) Channel Stability HIGH (4) Sediment Transport LOW (4) Stream Geomorphology HIGH (2) Stream/Intertidal Zone Interaction NA (2) Longitudinal Tidal Flow NA (2) Tidal Marsh Stream Stability NA (3) Tidal Marsh Channel Stability NA (3) Tidal Marsh Stream Geomorphology NA (1) Water Quality MEDIUM (2) Baseflow HIGH (2) Streamside Area Vegetation MEDIUM (3) Upland Pollutant Filtration LOW (3) Thermoregulation HIGH (2) Indicators of Stressors YES (2) Aquatic Life Tolerance HIGH (2) Intertidal Zone Filtration NA (1) Habitat MEDIUM (2) In-stream Habitat LOW (3) Baseflow HIGH (3) Substrate LOW (3) Stream Stability HIGH (3) In-stream Habitat LOW (2) Stream-side Habitat HIGH (3) Stream-side Habitat HIGH (3) Thermoregulation HIGH (2) Tidal Marsh In-stream Habitat NA (3) Flow Restriction NA (3) Tidal Marsh Stream Stability NA (4) Tidal Marsh Channel Stability NA (4) Tidal Marsh Stream Geomorphology NA (3) Tidal Marsh In-stream Habitat NA (2) Intertidal Zone NA Overall MEDIUM NC SAM FIELD ASSESSMENT FORM Accompanies User Manual Version 2.1 USACE AID #: NCDWR #: INSTRUCTIONS: Attach a sketch of the assessment area and photographs. Attach a copy of the USGS 7.5-minute topographic quadrangle, and circle the location of the stream reach under evaluation. If multiple stream reaches will be evaluated on the same prope rty, identify and number all reaches on the attached map, and include a separate form for each reach. See the NC SAM User Manual for detailed descriptions and explanations of requested information. Record in the “Notes/Sketch” section if supplementary measurements were performed. See the NC SAM User Manual for examples of additional measurements that may be relevant. NOTE EVIDENCE OF STRESSORS AFFECTING THE ASSESSMENT AREA (do not need to be within the assessment area). PROJECT/SITE INFORMATION: 1. Project name (if any): Horne Creek Tribs Mitigation Project 2. Date of evaluation: 5-9-2018 3. Applicant/owner name: Water & Land Solutions 4. Assessor name/organization: J. Morgan 5. County: Surry 6. Nearest named water body on USGS 7.5-minute quad: Ararat River 7. River basin: Yadkin-PeeDee 8. Site coordinates (decimal degrees, at lower end of assessment reach): 36.170418º -80.301295º STREAM INFORMATION: (depth and width can be approximations) 9. Site number (show on attached map): R4B 10. Length of assessment reach evaluated (feet): 160 11. Channel depth from bed (in riffle, if present) to top of bank (feet): 0.4 Unable to assess channel depth. 12. Channel width at top of bank (feet): 3.9 13. Is assessment reach a swamp steam? Yes No 14. Feature type: Perennial flow Intermittent flow Tidal Marsh Stream STREAM CATEGORY INFORMATION: 15. NC SAM Zone: Mountains (M) Piedmont (P) Inner Coastal Plain (I) Outer Coastal Plain (O) 16. Estimated geomorphic 19 valley shape (skip for Tidal Marsh Stream): A B (more sinuous stream, flatter valley slope) (less sinuous stream, steeper valley slope) 17. Watershed size: (skip Size 1 (< 0.1 mi2) Size 2 (0.1 to < 0.5 mi2) Size 3 (0.5 to < 5 mi2) Size 4 (≥ 5 mi2) for Tidal Marsh Stream) ADDITIONAL INFORMATION: 18. Were regulatory considerations evaluated? Yes No If Yes, check all that apply to the assessment area. Section 10 water Classified Trout Waters Water Supply Watershed (I II III IV V) Essential Fish Habitat Primary Nursery Area High Quality Waters/Outstanding Resource Waters Publicly owned property NCDWR Riparian buffer rule in effect Nutrient Sensitive Waters Anadromous fish 303(d) List CAMA Area of Environmental Concern (AEC) Documented presence of a federal and/or state listed protected species within the assessment area. List species: Designated Critical Habitat (list species) 19. Are additional stream information/supplementary measurements included in “Notes/Sketch” section or attached? Yes No 1. Channel Water – assessment reach metric (skip for Size 1 streams and Tidal Marsh Streams) A Water throughout assessment reach. B No flow, water in pools only. C No water in assessment reach. 2. Evidence of Flow Restriction – assessment reach metric A At least 10% of assessment reach in-stream habitat or riffle-pool sequence is severely affected by a flow restriction or fill to the point of obstructing flow or a channel choked with aquatic macrophytes or ponded water or impoundment on flood or ebb within the assessment reach (examples: undersized or perched culverts, causeways that constrict the channel, tidal gates , debris jams, beaver dams). B Not A 3. Feature Pattern – assessment reach metric A A majority of the assessment reach has altered pattern (examples: straightening, modification above or below culvert). B Not A 4. Feature Longitudinal Profile – assessment reach metric A Majority of assessment reach has a substantially altered stream profile (examples: channel down-cutting, existing damming, over widening, active aggradation, dredging, and excavation where appropriate channel profile has not reformed from any of these disturbances). B Not A 5. Signs of Active Instability – assessment reach metric Consider only current instability, not past events from which the stream has currently recovered. Examples of instability include active bank failure, active channel down-cutting (head-cut), active widening, and artificial hardening (such as concrete, gabion, rip-rap). A < 10% of channel unstable B 10 to 25% of channel unstable C > 25% of channel unstable 6. Streamside Area Interaction – streamside area metric Consider for the Left Bank (LB) and the Right Bank (RB). LB RB A A Little or no evidence of conditions that adversely affect reference interaction B B Moderate evidence of conditions (examples: berms, levees, down-cutting, aggradation, dredging) that adversely affect reference interaction (examples: limited streamside area access , disruption of flood flows through streamside area, leaky or intermittent bulkheads, causeways with floodplain constriction, minor ditching [including mosquito ditching]) C C Extensive evidence of conditions that adversely affect reference interaction (little to no floodplain/intertidal zone access [examples: causeways with floodplain and channel constriction, bulkheads , retaining walls, fill, stream incision, disruption of flood flows through streamside area] or too much floodplain/intertidal zone access [examples: impoundments, intensive mosquito ditching]) or floodplain/intertidal zone unnaturally absent or assessment reach is a man-made feature on an interstream divide 7. Water Quality Stressors – assessment reach/intertidal zone metric Check all that apply. A Discolored water in stream or intertidal zone (milky white, blue, unnatural water discoloration, oil sheen, stream foam) B Excessive sedimentation (burying of stream features or intertidal zone) C Noticeable evidence of pollutant discharges entering the assessment reach and causing a water quality problem D Odor (not including natural sulfide odors) E Current published or collected data indicating degraded water quality in the assessment reach. Cite source in “Notes/Sketch” section. F Livestock with access to stream or intertidal zone G Excessive algae in stream or intertidal zone H Degraded marsh vegetation in the intertidal zone (removal, burning, regular mowing, destruction, etc) I Other: (explain in “Notes/Sketch” section) J Little to no stressors 8. Recent Weather – watershed metric (skip for Tidal Marsh Streams) For Size 1 or 2 streams, D1 drought or higher is considered a drought; for Size 3 or 4 streams, D2 drought or higher is considered a drought. A Drought conditions and no rainfall or rainfall not exceeding 1 inch within the last 48 hours B Drought conditions and rainfall exceeding 1 inch within the last 48 hours C No drought conditions 9. Large or Dangerous Stream – assessment reach metric Yes No Is stream is too large or dangerous to assess? If Yes, skip to Metric 13 (Streamside Area Ground Surface Condition). 10. Natural In-stream Habitat Types – assessment reach metric 10a. Yes No Degraded in-stream habitat over majority of the assessment reach (examples of stressors include excessive sedimentation, mining, excavation, in-stream hardening [for example, rip-rap], recent dredging, and snagging) (evaluate for Size 4 Coastal Plain streams only, then skip to Metric 12) 10b. Check all that occur (occurs if > 5% coverage of assessment reach) (skip for Size 4 Coastal Plain streams) A Multiple aquatic macrophytes and aquatic mosses (include liverworts, lichens, and algal mats) B Multiple sticks and/or leaf packs and/or emergent vegetation C Multiple snags and logs (including lap trees) D 5% undercut banks and/or root mats and/or roots in banks extend to the normal wetted perimeter E Little or no habitat F 5% oysters or other natural hard bottoms G Submerged aquatic vegetation H Low-tide refugia (pools) I Sand bottom J 5% vertical bank along the marsh K Little or no habitat *********************************REMAINING QUESTIONS ARE NOT APPLICABLE FOR TIDAL MARSH STREAMS**************************** 11. Bedform and Substrate – assessment reach metric (skip for Size 4 Coastal Plain streams and Tidal Marsh Streams) 11a. Yes No Is assessment reach in a natural sand-bed stream? (skip for Coastal Plain streams) 11b. Bedform evaluated. Check the appropriate box(es). A Riffle-run section (evaluate 11c) B Pool-glide section (evaluate 11d) C Natural bedform absent (skip to Metric 12, Aquatic Life) 11c. In riffle sections, check all that occur below the normal wetted perimeter of the assessment reach – whether or not submerged. Check at least one box in each row (skip for Size 4 Coastal Plain streams and Tidal Marsh Streams). Not Present (NP) = absent, Rare (R) = present but < 10%, Common (C) = > 10-40%, Abundant (A) = > 40-70%, Predominant (P) = > 70%. Cumulative percentages should not exceed 100% for each assessment reach. NP R C A P Bedrock/saprolite Boulder (256 – 4096 mm) Cobble (64 – 256 mm) Gravel (2 – 64 mm) Sand (.062 – 2 mm) Silt/clay (< 0.062 mm) Detritus Artificial (rip-rap, concrete, etc.) 11d. Yes No Are pools filled with sediment? (skip for Size 4 Coastal Plain streams and Tidal Marsh Streams) Check for Tidal Marsh Streams Only 12. Aquatic Life – assessment reach metric (skip for Tidal Marsh Streams) 12a. Yes No Was an in-stream aquatic life assessment performed as described in the User Manual? If No, select one of the following reasons and skip to Metric 13. No Water Other: 12b. Yes No Are aquatic organisms present in the assessment reach (look in riffles, pools, then snags)? If Yes, check all that apply. If No, skip to Metric 13. 1 >1 Numbers over columns refer to “individuals” for Size 1 and 2 streams and “taxa” for Size 3 and 4 streams. Adult frogs Aquatic reptiles Aquatic macrophytes and aquatic mosses (include liverworts, lichens, and algal mats) Beetles Caddisfly larvae (T) Asian clam (Corbicula) Crustacean (isopod/amphipod/crayfish/shrimp) Damselfly and dragonfly larvae Dipterans Mayfly larvae (E) Megaloptera (alderfly, fishfly, dobsonfly larvae) Midges/mosquito larvae Mosquito fish (Gambusia) or mud minnows (Umbra pygmaea) Mussels/Clams (not Corbicula) Other fish Salamanders/tadpoles Snails Stonefly larvae (P) Tipulid larvae Worms/leeches 13. Streamside Area Ground Surface Condition – streamside area metric (skip for Tidal Marsh Streams and B valley types) Consider for the Left Bank (LB) and the Right Bank (RB). Consider storage capacity with regard to both overbank flow and upland runoff. LB RB A A Little or no alteration to water storage capacity over a majority of the streamside area B B Moderate alteration to water storage capacity over a majority of the streamside area C C Severe alteration to water storage capacity over a majority of the streamside area (examples: ditches, fill, soil compaction, livestock disturbance, buildings, man-made levees, drainage pipes) 14. Streamside Area Water Storage – streamside area metric (skip for Size 1 streams, Tidal Marsh Streams, and B valley types) Consider for the Left Bank (LB) and the Right Bank (RB) of the streamside area. LB RB A A Majority of streamside area with depressions able to pond water ≥ 6 inches deep B B Majority of streamside area with depressions able to pond water 3 to 6 inches deep C C Majority of streamside area with depressions able to pond water < 3 inches deep 15. Wetland Presence – streamside area metric (skip for Tidal Marsh Streams) Consider for the Left Bank (LB) and the Right Bank (RB). Do not consider wetlands outside of the streamside area or within the normal wetted perimeter of assessment reach. LB RB Y Y Are wetlands present in the streamside area? N N 16. Baseflow Contributors – assessment reach metric (skip for Size 4 streams and Tidal Marsh Streams) Check all contributors within the assessment reach or within view of and draining to the assessment reach. A Streams and/or springs (jurisdictional discharges) B Ponds (include wet detention basins; do not include sediment basins or dry detention basins) C Obstruction passing flow during low-flow periods within the assessment area (beaver dam, leaky dam, bottom-release dam, weir) D Evidence of bank seepage or sweating (iron in water indicates seepage) E Stream bed or bank soil reduced (dig through deposited sediment if present) F None of the above 17. Baseflow Detractors – assessment area metric (skip for Tidal Marsh Streams) Check all that apply. A Evidence of substantial water withdrawals from the assessment reach (includes areas excavated for pump installation) B Obstruction not passing flow during low-flow periods affecting the assessment reach (ex: watertight dam, sediment deposit) C Urban stream (≥ 24% impervious surface for watershed) D Evidence that the streamside area has been modified resulting i n accelerated drainage into the assessment reach E Assessment reach relocated to valley edge F None of the above 18. Shading – assessment reach metric (skip for Tidal Marsh Streams) Consider aspect. Consider “leaf-on” condition. A Stream shading is appropriate for stream category (may include gaps associated with natural processes) B Degraded (example: scattered trees) C Stream shading is gone or largely absent 19. Buffer Width – streamside area metric (skip for Tidal Marsh Streams) Consider “vegetated buffer” and “wooded buffer” separately for left bank (LB) and right bank (RB) starting at the top of bank out to the first break. Vegetated Wooded LB RB LB RB A A A A ≥ 100 feet wide or extends to the edge of the watershed B B B B From 50 to < 100 feet wide C C C C From 30 to < 50 feet wide D D D D From 10 to < 30 feet wide E E E E < 10 feet wide or no trees 20. Buffer Structure – streamside area metric (skip for Tidal Marsh Streams) Consider for left bank (LB) and right bank (RB) for Metric 19 (“Vegetated” Buffer Width). LB RB A A Mature forest B B Non-mature woody vegetation or modified vegetation structure C C Herbaceous vegetation with or without a strip of trees < 10 feet wide D D Maintained shrubs E E Little or no vegetation 21. Buffer Stressors – streamside area metric (skip for Tidal Marsh Streams) Check all appropriate boxes for left bank (LB) and right bank (RB). Indicate if listed stressor abuts stream (Abuts), does not abut but is within 30 feet of stream (< 30 feet), or is between 30 to 50 feet of stream (30-50 feet). If none of the following stressors occurs on either bank, check here and skip to Metric 22: Abuts < 30 feet 30-50 feet LB RB LB RB LB RB A A A A A A Row crops B B B B B B Maintained turf C C C C C C Pasture (no livestock)/commercial horticulture D D D D D D Pasture (active livestock use) 22. Stem Density – streamside area metric (skip for Tidal Marsh Streams) Consider for left bank (LB) and right bank (RB) for Metric 19 (“Wooded” Buffer Width). LB RB A A Medium to high stem density B B Low stem density C C No wooded riparian buffer or predominantly herbaceous species or bare ground 23. Continuity of Vegetated Buffer – streamside area metric (skip for Tidal Marsh Streams) Consider whether vegetated buffer is continuous along stream (parallel). Breaks are areas lacking vegetation > 10 feet wide. LB RB A A The total length of buffer breaks is < 25 percent. B B The total length of buffer breaks is between 25 and 50 percent. C C The total length of buffer breaks is > 50 percent. 24. Vegetative Composition – streamside area metric (skip for Tidal Marsh Streams) Evaluate the dominant vegetation within 100 feet of each bank or to the edge of the watershed (whichever comes first) as it contribute s to assessment reach habitat. LB RB A A Vegetation is close to undisturbed in species present and their proportions. Lower strata composed of native species, with non-native invasive species absent or sparse. B B Vegetation indicates disturbance in terms of species diversity or proportions, but is still largely composed of native species. This may include communities of weedy native species that develop after clear -cutting or clearing or communities with non-native invasive species present, but not dominant, over a large portion of the expected strata or communities missing understory but retaining canopy trees. C C Vegetation is severely disturbed in terms of species diversity or proport ions. Mature canopy is absent or communities with non-native invasive species dominant over a large portion of expected strata or communities composed of planted stands of non-characteristic species or communities inappropriately composed of a single species or no vegetation. 25. Conductivity – assessment reach metric (skip for all Coastal Plain streams) 25a. Yes No Was conductivity measurement recorded? If No, select one of the following reasons. No Water Other: 25b. Check the box corresponding to the conductivity measurement (units of microsiemens per centimeter). A < 46 B 46 to < 67 C 67 to < 79 D 79 to < 230 E ≥ 230 Notes/Sketch: Draft NC SAM Stream Rating Sheet Accompanies User Manual Version 2.1 Stream Site Name Horne Creek Tribs Mitigation Project Date of Assessment 5-9-2018 Stream Category Pb1 Assessor Name/Organization J. Morgan Notes of Field Assessment Form (Y/N) NO Presence of regulatory considerations (Y/N) NO Additional stream information/supplementary measurements included (Y/N) NO NC SAM feature type (perennial, intermittent, Tidal Marsh Stream) Perennial Function Class Rating Summary USACE/ All Streams NCDWR Intermittent (1) Hydrology HIGH (2) Baseflow HIGH (2) Flood Flow HIGH (3) Streamside Area Attenuation HIGH (4) Floodplain Access HIGH (4) Wooded Riparian Buffer HIGH (4) Microtopography NA (3) Stream Stability HIGH (4) Channel Stability HIGH (4) Sediment Transport LOW (4) Stream Geomorphology HIGH (2) Stream/Intertidal Zone Interaction NA (2) Longitudinal Tidal Flow NA (2) Tidal Marsh Stream Stability NA (3) Tidal Marsh Channel Stability NA (3) Tidal Marsh Stream Geomorphology NA (1) Water Quality MEDIUM (2) Baseflow HIGH (2) Streamside Area Vegetation MEDIUM (3) Upland Pollutant Filtration LOW (3) Thermoregulation HIGH (2) Indicators of Stressors YES (2) Aquatic Life Tolerance HIGH (2) Intertidal Zone Filtration NA (1) Habitat MEDIUM (2) In-stream Habitat LOW (3) Baseflow HIGH (3) Substrate LOW (3) Stream Stability HIGH (3) In-stream Habitat LOW (2) Stream-side Habitat HIGH (3) Stream-side Habitat HIGH (3) Thermoregulation HIGH (2) Tidal Marsh In-stream Habitat NA (3) Flow Restriction NA (3) Tidal Marsh Stream Stability NA (4) Tidal Marsh Channel Stability NA (4) Tidal Marsh Stream Geomorphology NA (3) Tidal Marsh In-stream Habitat NA (2) Intertidal Zone NA Overall MEDIUM NC SAM FIELD ASSESSMENT FORM Accompanies User Manual Version 2.1 USACE AID #: NCDWR #: INSTRUCTIONS: Attach a sketch of the assessment area and photographs. Attach a copy of the USGS 7.5-minute topographic quadrangle, and circle the location of the stream reach under evaluation. If multiple stream reaches will be evaluated on the same prope rty, identify and number all reaches on the attached map, and include a separate form for each reach. See the NC SAM User Manual for detailed descriptions and explanations of requested information. Record in the “Notes/Sketch” section if supplementary measurements were performed. See the NC SAM User Manual for examples of additional measurements that may be relevant. NOTE EVIDENCE OF STRESSORS AFFECTING THE ASSESSMENT AREA (do not need to be within the assessment area). PROJECT/SITE INFORMATION: 1. Project name (if any): Horne Creek Tribs Mitigation Project 2. Date of evaluation: 5-9-2018 3. Applicant/owner name: Water & Land Solutions 4. Assessor name/organization: J. Morgan 5. County: Surry 6. Nearest named water body on USGS 7.5-minute quad: Ararat River 7. River basin: Yadkin-PeeDee 8. Site coordinates (decimal degrees, at lower end of assessment reach): 36.165990º -80.301303º STREAM INFORMATION: (depth and width can be approximations) 9. Site number (show on attached map): R5 10. Length of assessment reach evaluated (feet): 2,600 11. Channel depth from bed (in riffle, if present) to top of bank (feet): 4.9 Unable to assess channel depth. 12. Channel width at top of bank (feet): 16.9 13. Is assessment reach a swamp steam? Yes No 14. Feature type: Perennial flow Intermittent flow Tidal Marsh Stream STREAM CATEGORY INFORMATION: 15. NC SAM Zone: Mountains (M) Piedmont (P) Inner Coastal Plain (I) Outer Coastal Plain (O) 16. Estimated geomorphic 19 valley shape (skip for Tidal Marsh Stream): A B (more sinuous stream, flatter valley slope) (less sinuous stream, steeper valley slope) 17. Watershed size: (skip Size 1 (< 0.1 mi2) Size 2 (0.1 to < 0.5 mi2) Size 3 (0.5 to < 5 mi2) Size 4 (≥ 5 mi2) for Tidal Marsh Stream) ADDITIONAL INFORMATION: 18. Were regulatory considerations evaluated? Yes No If Yes, check all that apply to the assessment area. Section 10 water Classified Trout Waters Water Supply Watershed (I II III IV V) Essential Fish Habitat Primary Nursery Area High Quality Waters/Outstanding Resource Waters Publicly owned property NCDWR Riparian buffer rule in effect Nutrient Sensitive Waters Anadromous fish 303(d) List CAMA Area of Environmental Concern (AEC) Documented presence of a federal and/or state listed protected species within the assessment area. List species: Designated Critical Habitat (list species) 19. Are additional stream information/supplementary measurements included in “Notes/Sketch” section or attached? Yes No 1. Channel Water – assessment reach metric (skip for Size 1 streams and Tidal Marsh Streams) A Water throughout assessment reach. B No flow, water in pools only. C No water in assessment reach. 2. Evidence of Flow Restriction – assessment reach metric A At least 10% of assessment reach in-stream habitat or riffle-pool sequence is severely affected by a flow restriction or fill to the point of obstructing flow or a channel choked with aquatic macrophytes or ponded water or impoundment on flood or ebb within the assessment reach (examples: undersized or perched culverts, causeways that constrict the channel, tidal gates , debris jams, beaver dams). B Not A 3. Feature Pattern – assessment reach metric A A majority of the assessment reach has altered pattern (examples: straightening, modification above or below culvert). B Not A 4. Feature Longitudinal Profile – assessment reach metric A Majority of assessment reach has a substantially altered stream profile (examples: channel down-cutting, existing damming, over widening, active aggradation, dredging, and excavation where appropriate channel profile has not reformed from any of these disturbances). B Not A 5. Signs of Active Instability – assessment reach metric Consider only current instability, not past events from which the stream has currently recovered. Examples of instability include active bank failure, active channel down-cutting (head-cut), active widening, and artificial hardening (such as concrete, gabion, rip-rap). A < 10% of channel unstable B 10 to 25% of channel unstable C > 25% of channel unstable 6. Streamside Area Interaction – streamside area metric Consider for the Left Bank (LB) and the Right Bank (RB). LB RB A A Little or no evidence of conditions that adversely affect reference interaction B B Moderate evidence of conditions (examples: berms, levees, down-cutting, aggradation, dredging) that adversely affect reference interaction (examples: limited streamside area access , disruption of flood flows through streamside area, leaky or intermittent bulkheads, causeways with floodplain constriction, minor ditching [including mosquito ditching]) C C Extensive evidence of conditions that adversely affect reference interaction (little to no floodplain/intertidal zone access [examples: causeways with floodplain and channel constriction, bulkheads , retaining walls, fill, stream incision, disruption of flood flows through streamside area] or too much floodplain/intertidal zone access [examples: impoundments, intensive mosquito ditching]) or floodplain/intertidal zone unnaturally absent or assessment reach is a man-made feature on an interstream divide 7. Water Quality Stressors – assessment reach/intertidal zone metric Check all that apply. A Discolored water in stream or intertidal zone (milky white, blue, unnatural water discoloration, oil sheen, stream foam) B Excessive sedimentation (burying of stream features or intertidal zone) C Noticeable evidence of pollutant discharges entering the assessment reach and causing a water quality problem D Odor (not including natural sulfide odors) E Current published or collected data indicating degraded water quality in the assessment reach. Cite source in “Notes/Sketch” section. F Livestock with access to stream or intertidal zone G Excessive algae in stream or intertidal zone H Degraded marsh vegetation in the intertidal zone (removal, burning, regular mowing, destruction, etc) I Other: (explain in “Notes/Sketch” section) J Little to no stressors 8. Recent Weather – watershed metric (skip for Tidal Marsh Streams) For Size 1 or 2 streams, D1 drought or higher is considered a drought; for Size 3 or 4 streams, D2 drought or higher is considered a drought. A Drought conditions and no rainfall or rainfall not exceeding 1 inch within the last 48 hours B Drought conditions and rainfall exceeding 1 inch within the last 48 hours C No drought conditions 9. Large or Dangerous Stream – assessment reach metric Yes No Is stream is too large or dangerous to assess? If Yes, skip to Metric 13 (Streamside Area Ground Surface Condition). 10. Natural In-stream Habitat Types – assessment reach metric 10a. Yes No Degraded in-stream habitat over majority of the assessment reach (examples of stressors include excessive sedimentation, mining, excavation, in-stream hardening [for example, rip-rap], recent dredging, and snagging) (evaluate for Size 4 Coastal Plain streams only, then skip to Metric 12) 10b. Check all that occur (occurs if > 5% coverage of assessment reach) (skip for Size 4 Coastal Plain streams) A Multiple aquatic macrophytes and aquatic mosses (include liverworts, lichens, and algal mats) B Multiple sticks and/or leaf packs and/or emergent vegetation C Multiple snags and logs (including lap trees) D 5% undercut banks and/or root mats and/or roots in banks extend to the normal wetted perimeter E Little or no habitat F 5% oysters or other natural hard bottoms G Submerged aquatic vegetation H Low-tide refugia (pools) I Sand bottom J 5% vertical bank along the marsh K Little or no habitat *********************************REMAINING QUESTIONS ARE NOT APPLICABLE FOR TIDAL MARSH STREAMS**************************** 11. Bedform and Substrate – assessment reach metric (skip for Size 4 Coastal Plain streams and Tidal Marsh Streams) 11a. Yes No Is assessment reach in a natural sand-bed stream? (skip for Coastal Plain streams) 11b. Bedform evaluated. Check the appropriate box(es). A Riffle-run section (evaluate 11c) B Pool-glide section (evaluate 11d) C Natural bedform absent (skip to Metric 12, Aquatic Life) 11c. In riffle sections, check all that occur below the normal wetted perimeter of the assessment reach – whether or not submerged. Check at least one box in each row (skip for Size 4 Coastal Plain streams and Tidal Marsh Streams). Not Present (NP) = absent, Rare (R) = present but < 10%, Common (C) = > 10-40%, Abundant (A) = > 40-70%, Predominant (P) = > 70%. Cumulative percentages should not exceed 100% for each assessment reach. NP R C A P Bedrock/saprolite Boulder (256 – 4096 mm) Cobble (64 – 256 mm) Gravel (2 – 64 mm) Sand (.062 – 2 mm) Silt/clay (< 0.062 mm) Detritus Artificial (rip-rap, concrete, etc.) 11d. Yes No Are pools filled with sediment? (skip for Size 4 Coastal Plain streams and Tidal Marsh Streams) Check for Tidal Marsh Streams Only 12. Aquatic Life – assessment reach metric (skip for Tidal Marsh Streams) 12a. Yes No Was an in-stream aquatic life assessment performed as described in the User Manual? If No, select one of the following reasons and skip to Metric 13. No Water Other: 12b. Yes No Are aquatic organisms present in the assessment reach (look in riffles, pools, then snags)? If Yes, check all that apply. If No, skip to Metric 13. 1 >1 Numbers over columns refer to “individuals” for Size 1 and 2 streams and “taxa” for Size 3 and 4 streams. Adult frogs Aquatic reptiles Aquatic macrophytes and aquatic mosses (include liverworts, lichens, and algal mats) Beetles Caddisfly larvae (T) Asian clam (Corbicula) Crustacean (isopod/amphipod/crayfish/shrimp) Damselfly and dragonfly larvae Dipterans Mayfly larvae (E) Megaloptera (alderfly, fishfly, dobsonfly larvae) Midges/mosquito larvae Mosquito fish (Gambusia) or mud minnows (Umbra pygmaea) Mussels/Clams (not Corbicula) Other fish Salamanders/tadpoles Snails Stonefly larvae (P) Tipulid larvae Worms/leeches 13. Streamside Area Ground Surface Condition – streamside area metric (skip for Tidal Marsh Streams and B valley types) Consider for the Left Bank (LB) and the Right Bank (RB). Consider storage capacity with regard to both overbank flow and upland runoff. LB RB A A Little or no alteration to water storage capacity over a majority of the streamside area B B Moderate alteration to water storage capacity over a majority of the streamside area C C Severe alteration to water storage capacity over a majority of the streamside area (examples: ditches, fill, soil compaction, livestock disturbance, buildings, man-made levees, drainage pipes) 14. Streamside Area Water Storage – streamside area metric (skip for Size 1 streams, Tidal Marsh Streams, and B valley types) Consider for the Left Bank (LB) and the Right Bank (RB) of the streamside area. LB RB A A Majority of streamside area with depressions able to pond water ≥ 6 inches deep B B Majority of streamside area with depressions able to pond water 3 to 6 inches deep C C Majority of streamside area with depressions able to pond water < 3 inches deep 15. Wetland Presence – streamside area metric (skip for Tidal Marsh Streams) Consider for the Left Bank (LB) and the Right Bank (RB). Do not consider wetlands outside of the streamside area or within the normal wetted perimeter of assessment reach. LB RB Y Y Are wetlands present in the streamside area? N N 16. Baseflow Contributors – assessment reach metric (skip for Size 4 streams and Tidal Marsh Streams) Check all contributors within the assessment reach or within view of and draining to the assessment reach. A Streams and/or springs (jurisdictional discharges) B Ponds (include wet detention basins; do not include sediment basins or dry detention basins) C Obstruction passing flow during low-flow periods within the assessment area (beaver dam, leaky dam, bottom-release dam, weir) D Evidence of bank seepage or sweating (iron in water indicates seepage) E Stream bed or bank soil reduced (dig through deposited sediment if present) F None of the above 17. Baseflow Detractors – assessment area metric (skip for Tidal Marsh Streams) Check all that apply. A Evidence of substantial water withdrawals from the assessment reach (includes areas excavated for pump installation) B Obstruction not passing flow during low-flow periods affecting the assessment reach (ex: watertight dam, sediment deposit) C Urban stream (≥ 24% impervious surface for watershed) D Evidence that the streamside area has been modified resulting i n accelerated drainage into the assessment reach E Assessment reach relocated to valley edge F None of the above 18. Shading – assessment reach metric (skip for Tidal Marsh Streams) Consider aspect. Consider “leaf-on” condition. A Stream shading is appropriate for stream category (may include gaps associated with natural processes) B Degraded (example: scattered trees) C Stream shading is gone or largely absent 19. Buffer Width – streamside area metric (skip for Tidal Marsh Streams) Consider “vegetated buffer” and “wooded buffer” separately for left bank (LB) and right bank (RB) starting at the top of bank out to the first break. Vegetated Wooded LB RB LB RB A A A A ≥ 100 feet wide or extends to the edge of the watershed B B B B From 50 to < 100 feet wide C C C C From 30 to < 50 feet wide D D D D From 10 to < 30 feet wide E E E E < 10 feet wide or no trees 20. Buffer Structure – streamside area metric (skip for Tidal Marsh Streams) Consider for left bank (LB) and right bank (RB) for Metric 19 (“Vegetated” Buffer Width). LB RB A A Mature forest B B Non-mature woody vegetation or modified vegetation structure C C Herbaceous vegetation with or without a strip of trees < 10 feet wide D D Maintained shrubs E E Little or no vegetation 21. Buffer Stressors – streamside area metric (skip for Tidal Marsh Streams) Check all appropriate boxes for left bank (LB) and right bank (RB). Indicate if listed stressor abuts stream (Abuts), does not abut but is within 30 feet of stream (< 30 feet), or is between 30 to 50 feet of stream (30-50 feet). If none of the following stressors occurs on either bank, check here and skip to Metric 22: Abuts < 30 feet 30-50 feet LB RB LB RB LB RB A A A A A A Row crops B B B B B B Maintained turf C C C C C C Pasture (no livestock)/commercial horticulture D D D D D D Pasture (active livestock use) 22. Stem Density – streamside area metric (skip for Tidal Marsh Streams) Consider for left bank (LB) and right bank (RB) for Metric 19 (“Wooded” Buffer Width). LB RB A A Medium to high stem density B B Low stem density C C No wooded riparian buffer or predominantly herbaceous species or bare ground 23. Continuity of Vegetated Buffer – streamside area metric (skip for Tidal Marsh Streams) Consider whether vegetated buffer is continuous along stream (parallel). Breaks are areas lacking vegetation > 10 feet wide. LB RB A A The total length of buffer breaks is < 25 percent. B B The total length of buffer breaks is between 25 and 50 percent. C C The total length of buffer breaks is > 50 percent. 24. Vegetative Composition – streamside area metric (skip for Tidal Marsh Streams) Evaluate the dominant vegetation within 100 feet of each bank or to the edge of the watershed (whichever comes first) as it contribute s to assessment reach habitat. LB RB A A Vegetation is close to undisturbed in species present and their proportions. Lower strata composed of native species, with non-native invasive species absent or sparse. B B Vegetation indicates disturbance in terms of species diversity or proportions, but is still largely composed of native species. This may include communities of weedy native species that develop after clear -cutting or clearing or communities with non-native invasive species present, but not dominant, over a large portion of the expected strata or communities missing understory but retaining canopy trees. C C Vegetation is severely disturbed in terms of species diversity or proport ions. Mature canopy is absent or communities with non-native invasive species dominant over a large portion of expected strata or communities composed of planted stands of non-characteristic species or communities inappropriately composed of a single species or no vegetation. 25. Conductivity – assessment reach metric (skip for all Coastal Plain streams) 25a. Yes No Was conductivity measurement recorded? If No, select one of the following reasons. No Water Other: 25b. Check the box corresponding to the conductivity measurement (units of microsiemens per centimeter). A < 46 B 46 to < 67 C 67 to < 79 D 79 to < 230 E ≥ 230 Notes/Sketch: Draft NC SAM Stream Rating Sheet Accompanies User Manual Version 2.1 Stream Site Name Horne Creek Tribs Mitigation Project Date of Assessment 5-9-2018 Stream Category Pb2 Assessor Name/Organization J. Morgan Notes of Field Assessment Form (Y/N) NO Presence of regulatory considerations (Y/N) NO Additional stream information/supplementary measurements included (Y/N) NO NC SAM feature type (perennial, intermittent, Tidal Marsh Stream) Perennial Function Class Rating Summary USACE/ All Streams NCDWR Intermittent (1) Hydrology LOW (2) Baseflow HIGH (2) Flood Flow LOW (3) Streamside Area Attenuation LOW (4) Floodplain Access LOW (4) Wooded Riparian Buffer MEDIUM (4) Microtopography NA (3) Stream Stability LOW (4) Channel Stability MEDIUM (4) Sediment Transport MEDIUM (4) Stream Geomorphology LOW (2) Stream/Intertidal Zone Interaction NA (2) Longitudinal Tidal Flow NA (2) Tidal Marsh Stream Stability NA (3) Tidal Marsh Channel Stability NA (3) Tidal Marsh Stream Geomorphology NA (1) Water Quality MEDIUM (2) Baseflow HIGH (2) Streamside Area Vegetation MEDIUM (3) Upland Pollutant Filtration LOW (3) Thermoregulation HIGH (2) Indicators of Stressors YES (2) Aquatic Life Tolerance HIGH (2) Intertidal Zone Filtration NA (1) Habitat HIGH (2) In-stream Habitat HIGH (3) Baseflow HIGH (3) Substrate MEDIUM (3) Stream Stability MEDIUM (3) In-stream Habitat HIGH (2) Stream-side Habitat HIGH (3) Stream-side Habitat MEDIUM (3) Thermoregulation HIGH (2) Tidal Marsh In-stream Habitat NA (3) Flow Restriction NA (3) Tidal Marsh Stream Stability NA (4) Tidal Marsh Channel Stability NA (4) Tidal Marsh Stream Geomorphology NA (3) Tidal Marsh In-stream Habitat NA (2) Intertidal Zone NA Overall MEDIUM Water & Land Solutions Horne Creek Tributaries Mitigation Project Appendix 9 – WOTUS Information January 24, 2019 US Army Corps of Engineers Asheville Regulatory Field Office Attn: William Elliott 151 Patton Avenue, Room 208 Asheville, NC 28801 Subject: Horne Creek Tributaries Mitigation Project, Preliminary Jurisdictional Determination Concurrence Request, Surry County, NC Dear Mr. Elliot: Please find the attached Preliminary Jurisdictional Determination Request attached for the Horne Creek Tributaries Stream Mitigation Project. The project is located in Surry County, North Carolina, approximately seven miles southwest of the Town of Pilot Mountain. Attached you will find the following: • Preliminary Jurisdictional Determination (PJD) Form • North Carolina Division of Mitigation Services Landowner Authorization Forms • Three Maps: Project Vicinity Map, USGS Topographic Map, and Preliminary Jurisdictional Waters Map. • Army Corps of Engineers Wetland Determination Forms • NC DWR Stream Identification Forms If you need any additional information, please feel free to contact me directly. Sincerely, Adam V. McIntyre 7721 Six Forks Road, Suite 130 Raleigh, NC 27615 Office Phone: (919)614-5111 Mobile Phone: (919) 632-5910 Email: adam@waterlandsolution.com Appendix 2 - PRELIMINARY JURISDICTIONAL DETERMINATION (PJD) FORM BACKGROUND INFORMATION A. REPORT COMPLETION DATE FOR PJD: B. NAME AND ADDRESS OF PERSON REQUESTING PJD: C. DISTRICT OFFICE, FILE NAME, AND NUMBER: D. PROJECT LOCATION(S) AND BACKGROUND INFORMATION: (USE THE TABLE BELOW TO DOCUMENT MULTIPLE AQUATIC RESOURCES AND/OR AQUATIC RESOURCES AT DIFFERENT SITES) State: County/parish/borough: City: Center coordinates of site (lat/long in degree decimal format): Lat.: Long.: Universal Transverse Mercator: Name of nearest waterbody: E. REVIEW PERFORMED FOR SITE EVALUATION (CHECK ALL THAT APPLY): Office (Desk) Determination. Date: Field Determination. Date(s): TABLE OF AQUATIC RESOURCES IN REVIEW AREA WHICH “MAY BE” SUBJECT TO REGULATORY JURISDICTION. Site number Latitude (decimal degrees) Longitude (decimal degrees) Estimated amount of aquatic resource in review area (acreage and linear feet, if applicable) Type of aquatic resource (i.e., wetland vs. non-wetland waters) Geographic authority to which the aquatic resource “may be” subject (i.e., Section 404 or Section 10/404) 1) The Corps of Engineers believes that there may be jurisdictional aquatic resources in the review area, and the requestor of this PJD is hereby advised of his or her option to request and obtain an approved JD (AJD) for that review area based on an informed decision after having discussed the various types of JDs and their characteristics and circumstances when they may be appropriate. 2)In any circumstance where a permit applicant obtains an individual permit, or a Nationwide General Permit (NWP) or other general permit verification requiring “pre- construction notification” (PCN), or requests verification for a non-reporting NWP or other general permit, and the permit applicant has not requested an AJD for the activity, the permit applicant is hereby made aware that: (1) the permit applicant has elected to seek a permit authorization based on a PJD, which does not make an official determination of jurisdictional aquatic resources; (2) the applicant has the option to request an AJD before accepting the terms and conditions of the permit authorization, and that basing a permit authorization on an AJD could possibly result in less compensatory mitigation being required or different special conditions; (3) the applicant has the right to request an individual permit rather than accepting the terms and conditions of the NWP or other general permit authorization; (4) the applicant can accept a permit authorization and thereby agree to comply with all the terms and conditions of that permit, including whatever mitigation requirements the Corps has determined to be necessary; (5) undertaking any activity in reliance upon the subject permit authorization without requesting an AJD constitutes the applicant’s acceptance of the use of the PJD; (6) accepting a permit authorization (e.g., signing a proffered individual permit) or undertaking any activity in reliance on any form of Corps permit authorization based on a PJD constitutes agreement that all aquatic resources in the review area affected in any way by that activity will be treated as jurisdictional, and waives any challenge to such jurisdiction in any administrative or judicial compliance or enforcement action, or in any administrative appeal or in any Federal court; and (7) whether the applicant elects to use either an AJD or a PJD, the JD will be processed as soon as practicable. Further, an AJD, a proffered individual permit (and all terms and conditions contained therein), or individual permit denial can be administratively appealed pursuant to 33 C.F.R. Part 331. If, during an administrative appeal, it becomes appropriate to make an official determination whether geographic jurisdiction exists over aquatic resources in the review area, or to provide an official delineation of jurisdictional aquatic resources in the review area, the Corps will provide an AJD to accomplish that result, as soon as is practicable. This PJD finds that there “may be” waters of the U.S. and/or that there “may be” navigable waters of the U.S. on the subject review area, and identifies all aquatic features in the review area that could be affected by the proposed activity, based on the following information: SUPPORTING DATA. Data reviewed for PJD (check all that apply) Checked items should be included in subject file. Appropriately reference sources below where indicated for all checked items: Maps, plans, plots or plat submitted by or on behalf of the PJD requestor: Map: ___________________________________________________. Data sheets prepared/submitted by or on behalf of the PJD requestor. Office concurs with data sheets/delineation report. Office does not concur with data sheets/delineation report. Rationale: ___________________. Data sheets prepared by the Corps: _______________________________________________. Corps navigable waters’ study: ____________________________________________________. U.S. Geological Survey Hydrologic Atlas: ___________________________________________. USGS NHD data. USGS 8 and 12 digit HUC maps. U.S. Geological Survey map(s). Cite scale & quad name: _______________________________. Natural Resources Conservation Service Soil Survey. Citation: ___________________________. National wetlands inventory map(s). Cite name: ______________________________________. State/local wetland inventory map(s): _______________________________________________. FEMA/FIRM maps: ____________________________________________________________. 100-year Floodplain Elevation is: ________________.(National Geodetic Vertical Datum of 1929) Photographs: Aerial (Name & Date): ___________________________________________. or Other (Name & Date): ____________________________________________. Previous determination(s). File no. and date of response letter: __________________________. Other information (please specify): _________________________________________________. IMPORTANT NOTE: The information recorded on this form has not necessarily been verified by the Corps and should not be relied upon for later jurisdictional determinations. Signature and date of Signature and date of Regulatory staff member person requesting PJD completing PJD (REQUIRED, unless obtaining the signature is impracticable)1 1 Districts may establish timeframes for requestor to return signed PJD forms. If the requestor does not respond within the established time frame, the district may presume concurrence and no additional follow up is necessary prior to finalizing an action. Site # Latitude Longitude Estimated amount of resource in review area (acreage and linear ft, if applicable) Type of aquatic resource (i.e. wetland vs. non- wetland waters) Geographic authority to which the aquatic resource “may be” subject (i.e. Section 404 or Section 10/401) WA 36.282565 -80.510192 0.005 ac Wetland Section 404/401 WB 36.287452 -80.50265 0.076 ac Wetland Section 404/401 WC 36.287756 -80.50232 0.093 ac Wetland Section 404/401 WD 36.28756 -80.501849 0.175 ac Wetland Section 404/401 S1 36.289687 -80.500118 291 lf Non-wetland Section 404/401 S2 36.289516 -80.501029 41 lf Non-wetland Section 404/401 S3 36.289357 -80.500934 3,340 lf Non-wetland Section 404/401 S4 36.287641 -80.502223 123 lf Non-wetland Section 404/401 S5 36.287410 -80.502623 71 lf Non-wetland Section 404/401 S6 36.282523 -80.510805 1,267 Non-wetland Section 404/401 LANDOWNER. AUTHORIZATION FORM PROPERTY LEGAL DESCRITION: Deed Book L o> z i Page County: , Parcel ID Number: 5J G ZCr?77!j b , Street Address: f i C '� Z,- v l l c ci . Property Owner (please print: *"v ; } 61,,1 Fl� Property Owner (please print):_ Dn i, � t p The undersigned, registered property owner(s) of the above property, do hereby authorize Ina-4p')PI", t-'e -( of 9f'dlS (Contractor/Agent/Project Manager)' (Name of Contractor/Agent Firm/Agency)'- to take all actions necessary for the evaluation of the property as a potential stream, wetland and/or riparian buffer mitigation project, including conducting stream and/or wetland determinations and delineations, as well as issuance and acceptance of any required permit(s) or certification(s). I agree to allow regulatory agencies, including the IDS Army Corps of Engineers, to visit the property as part of these environmental reviews. Property Owners(s) Address: (if different from above) Property Owner Telephone Number: 7 0 S- _ -+2-_ Property Owner Telephone Number: C3 3 fie) 7 6,�-- U 3 y F We hereby certify the above information to be true and accurate to the best of our knowledge. (Pr erq Owner Authorised Signature) (Property, Owner Authorized Signature) (Date) (Date) 'Name of full deliver- staff member (full -deliveries) or DMS project manager (design -bid -build). 2NNa€ne of company (full -deliveries) or DMS (design -bid -build). PROPERTY LEGAL DESCRITION: Deed Book: C C�-7 Page: C. C-k _ County: S " I'll Parcel ID Number: S `i s7--� rn 7 b S i i -4 Street Address: Property Owner (please print: Property Owner (please print):_ The undersigned, registered property owner(s) of the above property, do hereby authorize l e, 4 h- ,.j i7, e i o� of pm (Contractor/Agent/Project _Manager)' (Name of Contractor/Agent Firm/Agency)= to take all actions necessary- for the evaluation of the property as a potential stream, wetland and/or riparian buffer mitigation project, including conducting stream and/or wetland determinations and delineations, as well as issuance and acceptance of any required permit(s) or certification(s). I agree to allow regulatory agencies, including the US Army- Corps of Engineers, to visit the property as part of these environmental reviews. Property Owners(s) Address: 3! S S 6L o C- (if different from above) PlYtYie- ,�e Z-702-- Property Owner Telephone Number: 7 Q ,S-- 6 3� 2 Property Owner Telephone Number: ft'-.n.) We hereby certify the above information to be true and accurate to the best of our knowledge. (Property- O ner Authorized Signature) (Date) (Property Owner Authorized Signature) (Date) 'Name of full delivery staff member (full -deliveries) or DMS project manager (design -bid -build). -'Name of company (full -deliveries) or DMS (design -bid -build). LANDOWNER AUTHORIZATION FORM PROPERTY LEGAL DESCRITION: heed Book' i✓'> Page: County : , r Parcel ID Number: S 1 ,57 2 cc -7 7 2- � Ct Street Address: �,- - el t e 0-'1 . E,1,16- c-�P N1c 27e43- 1�4�4 Property Owner {please print: _ d1 r i, Property Owner (please print): The undersigned, registered property owners) of the above property, do hereby authorize (Contractor/Agent/Project Manager)r (Name of Contractor/Agent Firm/Agency)2 to take all actions necessary for the evaluation of the property as a potential strewn, wetland and/or riparian buffer mitigation project, including conducting strewn and/or wetland determinations and delineations, as well as issuance and acceptance of any required permit(s) or certification(s). I agree to allow regulatory agencies, including the US Army Corps of Engineers, to visit the property as part of these environmental reviews. Property Owners(s) Address: _ .3 � S 21 S1--70 r__ is 12 c ! . (if different from above) 1P3rlylc C1t 1, Nc 2704-3 - �-,- 6 r Property Owner Telephone Number: Property Owner Telephone Number: We hereby certify the above information to be true and accurate to the best of our knowledge. %I t, &U, 4ztz 7 0 4- f7 (Property Owner Authorized Signature) (Bate) (Property Owner Authorized Signature) (Date) 'Name of full delivery staff member (full -deliveries) or DMS project manager (design -bid -build). '--Name of company (full -deliveries) or DMS (design -bid -build). LANDOWNER AUTHORIZATION FORM PROPERTY LEGAL DESCRITION: Deed Book: 00 936 Page: C µme} a County: Sv r r Parcel ID Number:- 5- 5"220 .567 Oci 1 Street Address: 3 6 3 K i o, e, f a I - �iv,rlCtG I p NC 270 3 i Property Owner (please print: !3 r o v✓i s o Sv r-r LL C Property Owner (please print): The undersigned, registered property owner(s) of the above property, do hereby authorize 1Aram.41,7ew R ,c) of 761S (Contractor/Agent/Project Manager)' (Name of Contractor/Agent Firm/Agency)' to take all actions necessary for the evaluation of the property as a potential stream, wetland and/or riparian buffer mitigation project, including conducting stream and/or wetland determinations and delineations, as well as issuance and acceptance of any required permit(s) or certification(s). I agree to allow regulatory agencies, including the US Army Corps of Engineers, to visit the property as part of these environmental reviews. Property Owners(s) Address: (if different from above) P,',n 4Lc(e SIC -------------- Property Owner Telephone Number: 2 - -- Z -4 S- (� Property Owner Telephone Number: We hereby certify the above information to be true and accurate to the best of our knowledge. (Property Owner Authorized Signature) (Property Owner Authorized Signature) (Date) (Date) Name of full delivery staff member (full -deliveries) or DMS project manager (design -bid -build). 'Name of company (full -deliveries) or DMS (design -bid -build). ^_ Esri, HERE, Garmin, © OpenStreetMap contributors±0 0.5 1 Miles FIGURE1Horne Creek Tributaries Mitigation Project NAD 1983 2011 State PlaneNorth Carolina FIPS 3200 FT US Vicinity Map ^_ ^_ Surry County Stokes County Forsyth County Yadkin County Davie County Leg end ^_Pro ject Location TLW s TLW:0 3040101110070 LWP-2008-51 HUC: 03 040101 HUC-12 Su rry Co. H yd rography Su rry County NC C ounites Conservation Easem ent 0 6 12 Miles050100Miles Project is located in TLW HUC-14: 03040101110070 LWP: 2008-51 WATER & LANDSOLUTIONS TM Siloam RoadHorne CreekYadkin River Copyright:© 2013 National Geographic Society, i-cubed NAD 1983 2011 State PlaneNorth Carolina FIPS 3200 FT US USGS Topographic Map FIGURE2Horne Creek TributariesStream & Wetland Mitigation Project Legend Conservation Easement Existing Wetlands Existing Stream Surry County, North Carolina WA WB WC WD S1 S2 S3 S4 S5 S6 Source: Esri, DigitalGlobe, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS,AeroGRID , IGN, and the GIS User Community NAD 1983 2011 State PlaneNorth Carolina FIPS 3200 FT US Jurisdictional WatersMap FIGURE3Horne Creek TributariesStream & WetlandMitigation Project Legend Conservation Easement Wetlands Streams Intermitten t Perennial WA WB WC WD Source: Esri, DigitalGlobe,GeoEye, Earthstar Geographics,CNES/Airbus DS, U SDA, USGS,AeroGRID , IGN, and the GIS UserCommunity WA Surry County, North Carolina Sampling Date: State:Sampling Point: Long: Soil Map Unit Name: X Are Vegetation No , Soil No , or Hydrology No Yes X Are Vegetation No , Soil No , or Hydrology No SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc. No X No X X No X Yes x Yes X Yes X X No wetland hydrology present. Sediment Deposits (B2) Drift Deposits (B3) Remarks: Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Depth (inches): Depth (inches): Depth (inches): No Saturation Present? (includes capillary fringe) Surface Water Present? Field Observations: Yes NoAre climatic / hydrologic conditions on the site typical for this time of year?(If no, explain in Remarks.) significantly disturbed? naturally problematic? Are “Normal Circumstances” present? (If needed, explain any answers in Remarks.) Remarks: Is the Sampled AreaYes Yes Yes Hydric Soil Present? Hydrophytic Vegetation Present? Wetland Hydrology Present? Nowithin a Wetland?Yes City/County:Surry WA-1 6-4-18 NC No Section, Township, Range:Shoals, NC 20slope Datum:NAD83-80.501021 Project/Site: Horne Creek Tributaries Mitigation Site Applicant/Owner: Water and Land Solutions Investigator(s): C. Sheats Landform (hillside, terrace, etc.): hillside slope Subregion (LRR or MLRA): LRR P, MLRA 136 Lat: 36.28247 NoneNWI classification:Colvard and Suches Soils Slope (%):Local relief (concave, convex, none): Surface Water (A1) High Water Table (A2) Saturation (A3) Water Marks (B1) Wetland Hydrology Indicators: True Aquatic Plants (B14) Saturation Visible on Aerial Imagery (C9) Secondary Indicators (minimum of two required) This form represents the upland adjacent to wetland WA, which is cattle pasture dominated by tall fescue. This also represents conditions adjacent to wetlands WB, WC, and WD. HYDROLOGY Geomorphic Position (D2) Shallow Aquitard (D3) Hydrogen Sulfide Odor (C1) Oxidized Rhizospheres on Living Roots (C3) Presence of Reduced Iron (C4) Recent Iron Reduction in Tilled Soils (C6) Thin Muck Surface (C7) Other (Explain in Remarks) Iron Deposits (B5) U.S. Army Corps of Engineers WETLAND DETERMINATION DATA SHEET – Eastern Mountains and Piedmont Region See ERDC/EL TR-07-24; the proponent agency is CECW-CO-R Requirement Control Symbol EXEMPT (Authority: AR 335-15, paragraph 5-2a) Microtopographic Relief (D4) FAC-Neutral Test (D5) Inundation Visible on Aerial Imagery (B7) Water-Stained Leaves (B9) Aquatic Fauna (B13) Algal Mat or Crust (B4) Wetland Hydrology Present? Stunted or Stressed Plants (D1) NoYes No No Water Table Present? Primary Indicators (minimum of one is required; check all that apply) Surface Soil Cracks (B6) Sparsely Vegetated Concave Surface (B8) Drainage Patterns (B10) Moss Trim Lines (B16) Dry-Season Water Table (C2) Crayfish Burrows (C8) ENG FORM 6116-4-SG, JUL 2018 Eastern Mountains and Piedmont – Version 2.0 Sampling Point: (Plot size: 1. 2. 3. 4. 5. 6.(A/B) 7. 50% of total cover:20% of total cover:x 1 = Sapling/Shrub Stratum (Plot size:x 2 = 1.x 3 = 2.x 4 = 3.x 5 = 4.Column Totals:(B) 5. 6. 7. 8. 9. 4 - Morphological Adaptations1 (Provide supporting 50% of total cover:20% of total cover: Herb Stratum (Plot size: 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 50% of total cover:20% of total cover: Woody Vine Stratum (Plot size: 1. 2. 3. 4. 5. 50% of total cover:20% of total cover:Yes X 3 - Prevalence Index is ≤3.01 data in Remarks or on a separate sheet) Problematic Hydrophytic Vegetation1 (Explain) No WA-1 0 1 FACU species UPL species Hydrophytic Vegetation Indicators: Total Number of Dominant Species Across All Strata: Dominance Test worksheet: Number of Dominant Species That Are OBL, FACW, or FAC: OBL species FACW species FAC species Sapling/Shrub – Woody plants, excluding vines, less than 3 in. DBH and greater than or equal to 3.28 ft (1 m) tall. Tree – Woody plants, excluding vines, 3 in. (7.6 cm) or more in diameter at breast height (DBH), regardless of height. 1Indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic. Absolute % Cover 0.0% Percent of Dominant Species That Are OBL, FACW, or FAC: Tree Stratum ) =Total Cover 4X10 ft ) Indicator Status Dominant Species? Schedonorus arundinaceus 100 4x10ft Definitions of Four Vegetation Strata: Woody Vine – All woody vines greater than 3.28 ft in height. Hydrophytic Vegetation Present? =Total Cover Herb – All herbaceous (non-woody) plants, regardless of size, and woody plants less than 3.28 ft tall. 4x10 ) 100 2050 Prevalence Index worksheet: Total % Cover of: (A) (B) (A) Multiply by: Prevalence Index = B/A = 1 - Rapid Test for Hydrophytic Vegetation 2 - Dominance Test is >50% VEGETATION (Four Strata)– Use scientific names of plants. Remarks: (Include photo numbers here or on a separate sheet.) )4x10ft =Total Cover FACUYes =Total Cover ENG FORM 6116-4-SG, JUL 2018 Eastern Mountains and Piedmont – Version 2.0 Depth (inches):X Dark Surface (S7)unless disturbed or problematic.Red Parent Material (F21) (MLRA 127, 147, 148) No Hydric Soil Indicators: Polyvalue Below Surface (S8) (MLRA 147, 148) Thin Dark Surface (S9) (MLRA 147, 148) Loamy Gleyed Matrix (F2) Redox Dark Surface (F6) Redox Depressions (F8) Loamy Mucky Mineral (F1) (MLRA 136) Depleted Matrix (F3) Depleted Dark Surface (F7) 2 cm Muck (A10) (MLRA 147) Coast Prairie Redox (A16) Indicators for Problematic Hydric Soils3: (MLRA 147, 148) Piedmont Floodplain Soils (F19) (MLRA 136, 147) Very Shallow Dark Surface (F22) Red Parent Material (F21) (outside MLRA 127, 147, 148) 2 cm Muck (A10) (LRR N) Stripped Matrix (S6) Iron-Manganese Masses (F12) (LRR N,Other (Explain in Remarks) 3Indicators of hydrophytic vegetation and wetland hydrology must be present, Umbric Surface (F13) (MLRA 122, 136) Piedmont Floodplain Soils (F19) (MLRA 148) Sandy Gleyed Matrix (S4)MLRA 136) Depleted Below Dark Surface (A11) Thick Dark Surface (A12) Sandy Mucky Mineral (S1) Sandy Redox (S5) %Texture WA-1SOIL Type1 Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Redox FeaturesDepth (inches)Color (moist)Remarks 1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, MS=Masked Sand Grains.2Location: PL=Pore Lining, M=Matrix. % Matrix 10YR 5/4 10YR 4/4 3-14 0-3 Loc2 100 Loamy/Clayey Loamy/Clayey 100 Color (moist) Sampling Point: Yes Restrictive Layer (if observed): Remarks: Soils have been disturbed by cattle. Hydric Soil Present? Type: Histosol (A1) Histic Epipedon (A2) Black Histic (A3) Hydrogen Sulfide (A4) Stratified Layers (A5) ENG FORM 6116-4-SG, JUL 2018 Eastern Mountains and Piedmont – Version 2.0 Sampling Date: State:Sampling Point: Subregion (LRR or MLRA):Lat:Long: Soil Map Unit Name: X Are Vegetation No , Soil No , or Hydrology No Yes X Are Vegetation No , Soil No , or Hydrology No SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc. X No X No X X No X X X X X X Yes X Yes X Yes X X U.S. Army Corps of Engineers WETLAND DETERMINATION DATA SHEET – Eastern Mountains and Piedmont Region See ERDC/EL TR-07-24; the proponent agency is CECW-CO-R Requirement Control Symbol EXEMPT (Authority: AR 335-15, paragraph 5-2a) Microtopographic Relief (D4) FAC-Neutral Test (D5) Inundation Visible on Aerial Imagery (B7) Water-Stained Leaves (B9) Aquatic Fauna (B13) Algal Mat or Crust (B4) Wetland Hydrology Present? Stunted or Stressed Plants (D1) NoYes 0.5 No No Water Table Present? Primary Indicators (minimum of one is required; check all that apply) Surface Soil Cracks (B6) Sparsely Vegetated Concave Surface (B8) Drainage Patterns (B10) Moss Trim Lines (B16) Dry-Season Water Table (C2) Crayfish Burrows (C8) Surface Water (A1) High Water Table (A2) Saturation (A3) Water Marks (B1) Wetland Hydrology Indicators: True Aquatic Plants (B14) Saturation Visible on Aerial Imagery (C9) Secondary Indicators (minimum of two required) This form represents wetland WA, which is a small depression within a topographic crenulation near the confluence of an unnamed tributary to Horne Creek. HYDROLOGY Geomorphic Position (D2) Shallow Aquitard (D3) Hydrogen Sulfide Odor (C1) Oxidized Rhizospheres on Living Roots (C3) Presence of Reduced Iron (C4) Recent Iron Reduction in Tilled Soils (C6) Thin Muck Surface (C7) Other (Explain in Remarks) Iron Deposits (B5) City/County:Surry WA-1 6-4-18 NC No Section, Township, Range:Shoals, NC 0-2concave Project/Site: Horne Creek Tributaries Mitigation Site Applicant/Owner: Water and Land Solutions Investigator(s): C. Sheats Landform (hillside, terrace, etc.): hillside drainage crenulation Datum:NAD83-80.50102136.28247LRR P, MLRA 136 NoneNWI classification:Colvard and Suches Soils Slope (%):Local relief (concave, convex, none): Yes NoAre climatic / hydrologic conditions on the site typical for this time of year?(If no, explain in Remarks.) significantly disturbed? naturally problematic? Are “Normal Circumstances” present? (If needed, explain any answers in Remarks.) Remarks: Is the Sampled AreaYes Yes Yes Hydric Soil Present? Hydrophytic Vegetation Present? Wetland Hydrology Present? Nowithin a Wetland?Yes Sediment Deposits (B2) Drift Deposits (B3) Remarks: Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: 9 0 Depth (inches): Depth (inches): Depth (inches): No Saturation Present? (includes capillary fringe) Surface Water Present? Field Observations: ENG FORM 6116-4-SG, JUL 2018 Eastern Mountains and Piedmont – Version 2.0 Sampling Point: (Plot size: 1. 2. 3. 4. 5. 6.(A/B) 7. 50% of total cover:20% of total cover:x 1 = Sapling/Shrub Stratum (Plot size:x 2 = 1.x 3 = 2.x 4 = 3.x 5 = 4.Column Totals:(B) 5. 6. 7. 8.X 9. 4 - Morphological Adaptations1 (Provide supporting 50% of total cover:20% of total cover: Herb Stratum (Plot size: 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 50% of total cover:20% of total cover: Woody Vine Stratum (Plot size: 1. 2. 3. 4. 5. 50% of total cover:20% of total cover:Yes X =Total Cover Remarks: (Include photo numbers here or on a separate sheet.) )4x10ft =Total Cover FACW FACW Yes 1 - Rapid Test for Hydrophytic Vegetation 2 - Dominance Test is >50% VEGETATION (Four Strata)– Use scientific names of plants. Multiply by: Prevalence Index = B/A = Prevalence Index worksheet: Total % Cover of: (A) (B) (A) 615 4x10ft Definitions of Four Vegetation Strata: Woody Vine – All woody vines greater than 3.28 ft in height. Hydrophytic Vegetation Present? =Total Cover Herb – All herbaceous (non-woody) plants, regardless of size, and woody plants less than 3.28 ft tall. 4x10 ) 30 Yes10Lobelia cardinalis Persicaria maculosa 20 Tree Stratum ) =Total Cover 4X10 ft ) Indicator Status Dominant Species? OBL species FACW species FAC species Sapling/Shrub – Woody plants, excluding vines, less than 3 in. DBH and greater than or equal to 3.28 ft (1 m) tall. Tree – Woody plants, excluding vines, 3 in. (7.6 cm) or more in diameter at breast height (DBH), regardless of height. 1Indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic. Absolute % Cover 100.0% Percent of Dominant Species That Are OBL, FACW, or FAC: 3 - Prevalence Index is ≤3.01 data in Remarks or on a separate sheet) Problematic Hydrophytic Vegetation1 (Explain) No WA-1 2 2 FACU species UPL species Hydrophytic Vegetation Indicators: Total Number of Dominant Species Across All Strata: Dominance Test worksheet: Number of Dominant Species That Are OBL, FACW, or FAC: ENG FORM 6116-4-SG, JUL 2018 Eastern Mountains and Piedmont – Version 2.0 X X Depth (inches):X Sampling Point: Yes Restrictive Layer (if observed): Remarks: Soils have been disturbed by cattle. Hydric Soil Present? Type: Histosol (A1) Histic Epipedon (A2) Black Histic (A3) Hydrogen Sulfide (A4) Stratified Layers (A5) Loc2 90 Mucky Loam/Clay Loamy/Clayey 100 Color (moist) Matrix C10YR 4/2 10YR 3/2 10YR 5/63-14 0-3 WA-1SOIL Type1 Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Redox FeaturesDepth (inches)Color (moist)Remarks 1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, MS=Masked Sand Grains.2Location: PL=Pore Lining, M=Matrix. % Depleted Below Dark Surface (A11) Thick Dark Surface (A12) Sandy Mucky Mineral (S1) Sandy Redox (S5) % M10 Texture Prominent redox concentrations Stripped Matrix (S6) Iron-Manganese Masses (F12) (LRR N,Other (Explain in Remarks) 3Indicators of hydrophytic vegetation and wetland hydrology must be present, Umbric Surface (F13) (MLRA 122, 136) Piedmont Floodplain Soils (F19) (MLRA 148) Sandy Gleyed Matrix (S4)MLRA 136) Dark Surface (S7)unless disturbed or problematic.Red Parent Material (F21) (MLRA 127, 147, 148) No Hydric Soil Indicators: Polyvalue Below Surface (S8) (MLRA 147, 148) Thin Dark Surface (S9) (MLRA 147, 148) Loamy Gleyed Matrix (F2) Redox Dark Surface (F6) Redox Depressions (F8) Loamy Mucky Mineral (F1) (MLRA 136) Depleted Matrix (F3) Depleted Dark Surface (F7) 2 cm Muck (A10) (MLRA 147) Coast Prairie Redox (A16) Indicators for Problematic Hydric Soils3: (MLRA 147, 148) Piedmont Floodplain Soils (F19) (MLRA 136, 147) Very Shallow Dark Surface (F22) Red Parent Material (F21) (outside MLRA 127, 147, 148) 2 cm Muck (A10) (LRR N) ENG FORM 6116-4-SG, JUL 2018 Eastern Mountains and Piedmont – Version 2.0 ENG FORM 6116-4-SG, JUL 2018 Eastern Mountains and Piedmont – Version 2.0 Sampling Date: State:Sampling Point: Subregion (LRR or MLRA):Lat:Long: Soil Map Unit Name: X Are Vegetation No , Soil No , or Hydrology No Yes X Are Vegetation No , Soil No , or Hydrology No SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc. X No X No X X No X X X X X X Yes X Yes X Yes X X Sediment Deposits (B2) Drift Deposits (B3) Remarks: Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: 6 0 Depth (inches): Depth (inches): Depth (inches): No Saturation Present? (includes capillary fringe) Surface Water Present? Field Observations: Yes NoAre climatic / hydrologic conditions on the site typical for this time of year?(If no, explain in Remarks.) significantly disturbed? naturally problematic? Are “Normal Circumstances” present? (If needed, explain any answers in Remarks.) Remarks: Is the Sampled AreaYes Yes Yes Hydric Soil Present? Hydrophytic Vegetation Present? Wetland Hydrology Present? Nowithin a Wetland?Yes City/County:Surry WB-4 6-4-18 NC No Section, Township, Range:Shoals, NC 0-2concave Project/Site: Horne Creek Tributaties Mitigation Site Applicant/Owner: Water and Land Solutions Investigator(s): C. Sheats Landform (hillside, terrace, etc.): hillside drainage crenulation Datum:NAD83-80.50102136.28247LRR P, MLRA 136 NoneNWI classification:Colvard and Suches Soils Slope (%):Local relief (concave, convex, none): Surface Water (A1) High Water Table (A2) Saturation (A3) Water Marks (B1) Wetland Hydrology Indicators: True Aquatic Plants (B14) Saturation Visible on Aerial Imagery (C9) Secondary Indicators (minimum of two required) This form is for wetland WB which represent similar conditions in wetlands WC and WD, which are depressions within topographic crenulations in the floodplain near Horne Creek. HYDROLOGY Geomorphic Position (D2) Shallow Aquitard (D3) Hydrogen Sulfide Odor (C1) Oxidized Rhizospheres on Living Roots (C3) Presence of Reduced Iron (C4) Recent Iron Reduction in Tilled Soils (C6) Thin Muck Surface (C7) Other (Explain in Remarks) Iron Deposits (B5) U.S. Army Corps of Engineers WETLAND DETERMINATION DATA SHEET – Eastern Mountains and Piedmont Region See ERDC/EL TR-07-24; the proponent agency is CECW-CO-R Requirement Control Symbol EXEMPT (Authority: AR 335-15, paragraph 5-2a) Microtopographic Relief (D4) FAC-Neutral Test (D5) Inundation Visible on Aerial Imagery (B7) Water-Stained Leaves (B9) Aquatic Fauna (B13) Algal Mat or Crust (B4) Wetland Hydrology Present? Stunted or Stressed Plants (D1) NoYes 0.5 No No Water Table Present? Primary Indicators (minimum of one is required; check all that apply) Surface Soil Cracks (B6) Sparsely Vegetated Concave Surface (B8) Drainage Patterns (B10) Moss Trim Lines (B16) Dry-Season Water Table (C2) Crayfish Burrows (C8) ENG FORM 6116-4-SG, JUL 2018 Eastern Mountains and Piedmont – Version 2.0 Sampling Point: (Plot size: 1. 2. 3. 4. 5. 6.(A/B) 7. 50% of total cover:20% of total cover:x 1 = Sapling/Shrub Stratum (Plot size:x 2 = 1.x 3 = 2.x 4 = 3.x 5 = 4.Column Totals:(B) 5. 6. 7. 8.X 9. 4 - Morphological Adaptations1 (Provide supporting 50% of total cover:20% of total cover: Herb Stratum (Plot size: 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 50% of total cover:20% of total cover: Woody Vine Stratum (Plot size: 1. 2. 3. 4. 5. 50% of total cover:20% of total cover:Yes X 3 - Prevalence Index is ≤3.01 data in Remarks or on a separate sheet) Problematic Hydrophytic Vegetation1 (Explain) No WB-4 4 4 FACU species UPL species Hydrophytic Vegetation Indicators: Total Number of Dominant Species Across All Strata: Dominance Test worksheet: Number of Dominant Species That Are OBL, FACW, or FAC: FAC OBL species FACW species FAC species Sapling/Shrub – Woody plants, excluding vines, less than 3 in. DBH and greater than or equal to 3.28 ft (1 m) tall. Tree – Woody plants, excluding vines, 3 in. (7.6 cm) or more in diameter at breast height (DBH), regardless of height. 1Indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic. Absolute % Cover 100.0% Percent of Dominant Species That Are OBL, FACW, or FAC: 20 Acer rubrum Tree Stratum ) =Total Cover Fraxinus pennsylvanica 5m radius ) 40 Indicator Status 40 Dominant Species? Yes Yes10 20 Murdannia keisak Persicaria maculosa 35 5m radius Definitions of Four Vegetation Strata: Woody Vine – All woody vines greater than 3.28 ft in height. Hydrophytic Vegetation Present? =Total Cover Herb – All herbaceous (non-woody) plants, regardless of size, and woody plants less than 3.28 ft tall. 2m radius ) None 45 9 410 23 Prevalence Index worksheet: Total % Cover of: (A) (B) (A) Multiply by: Prevalence Index = B/A = 1 - Rapid Test for Hydrophytic Vegetation 2 - Dominance Test is >50% VEGETATION (Four Strata)– Use scientific names of plants. 20 8 Yes FACW Remarks: (Include photo numbers here or on a separate sheet.) )2m radius =Total Cover FACW OBL Yes =Total Cover ENG FORM 6116-4-SG, JUL 2018 Eastern Mountains and Piedmont – Version 2.0 Depth (inches): Dark Surface (S7)unless disturbed or problematic.Red Parent Material (F21) (MLRA 127, 147, 148) No Hydric Soil Indicators: Polyvalue Below Surface (S8) (MLRA 147, 148) Thin Dark Surface (S9) (MLRA 147, 148) Loamy Gleyed Matrix (F2) Redox Dark Surface (F6) Redox Depressions (F8) Loamy Mucky Mineral (F1) (MLRA 136) Depleted Matrix (F3) Depleted Dark Surface (F7) 2 cm Muck (A10) (MLRA 147) Coast Prairie Redox (A16) Indicators for Problematic Hydric Soils3: (MLRA 147, 148) Piedmont Floodplain Soils (F19) (MLRA 136, 147) Very Shallow Dark Surface (F22) Red Parent Material (F21) (outside MLRA 127, 147, 148) 2 cm Muck (A10) (LRR N) Stripped Matrix (S6) Iron-Manganese Masses (F12) (LRR N,Other (Explain in Remarks) 3Indicators of hydrophytic vegetation and wetland hydrology must be present, Umbric Surface (F13) (MLRA 122, 136) Piedmont Floodplain Soils (F19) (MLRA 148) Sandy Gleyed Matrix (S4)MLRA 136) Prominent redox concentrations Depleted Below Dark Surface (A11) Thick Dark Surface (A12) Sandy Mucky Mineral (S1) Sandy Redox (S5) % M25 Texture Prominent redox concentrations C15 WB-4SOIL 7-14 10YR 5/2 Type1 Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) 85 Redox FeaturesDepth (inches)Color (moist)Remarks 1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, MS=Masked Sand Grains.2Location: PL=Pore Lining, M=Matrix. 10YR 5/6 % Matrix C10YR 4/2 10YR 4/2 10YR 5/61-7 0-1 Loc2 M 75 Mucky Loam/Clay Loamy/Clayey Loamy/Clayey 100 Color (moist) Sampling Point: Yes Restrictive Layer (if observed): Remarks: Soils have been disturbed by cattle in Wetland C and D. Soils within Wetland B and C are mapped as Colvard and Suches, and Fairview sandy clay loam in Wetland D. The Hydric soil indicator here is an F3. Yes, hydric soils are present. Macros in form not allowing to autofill for hydric soil indicators. Hydric Soil Present? Type: Histosol (A1) Histic Epipedon (A2) Black Histic (A3) Hydrogen Sulfide (A4) Stratified Layers (A5) NC DWQ Stream Identification Form Version 4.11 Date: f �_ 15- I $ Project/Site: ry'e' Latitude: Evaluator: C S -�S County: Svcs Longitude:10. SDa6S Total Points: StrStream isat/eastintermittent �S a CJ' Dete circle one) Other if _> _ "► ff2:19 orerennial if 30* Ephemeral ntermittent erennial e.g. Quad Name:oa� Ir\ A. Geomor holo y (Subtotal = I LJ ) Absent Weak Moderate Strong la. Continuity of channel bed and bank 0 1 2 3 2. Sinuosity of channel along thalweg 0 1) 2 3 3. In -channel structure: ex. riffle -pool, step -pool, ripple -pool sequence 0 O 2 3 4. Particle size of stream substrate 0 2 3 5. Active/relict floodplain 0 fl 2 3 6. Depositional bars or benches 0 1 2 3 7. Recent alluvial deposits 0 2 3 8. Headcuts 0 2 3 9. Grade control 0 0.5 A 1.5 10. Natural valley 0 0.5 11 1 1.5 11. Second or greater order channel No 401 Yes = 3 artificial ditches are not rated; see discussions in manual B. Hvdrolociv (Subtotal = % .S ) 12. Presence of Baseflow 0 1 2 3 13. Iron oxidizing bacteria 0 1 2 3 14. Leaf litter 1.5 1 0.5 0 15. Sediment on plants or debris 0 0.5 1 1.5 16. Organic debris lines or piles 1 111.5 17. Soil -based evidence of high water table? No = 0 Yes t 3 G. t310100V (Subtotal = (=, • l � ) - 18. Fibrous roots in streambed 3 2 1 0 19. Rooted upland plants in streambed 3 2 1 0 20. Macrobenthos (note diversity and abundance) 0 1 2 3 21. Aquatic Mollusks M1 2 3 22. Fish 0 0.5 1 1.5 23. Crayfish 0 0.5 1 1.5 24. Amphibians 0.5 1 1.5 25. Algae 0.5 1 1.5 26. Wetland plants in streambed FACW .75)OBL = 1.5 Other = 0 "perennial streams may also be identified using other methods. See p. 35 of manual. Notes: h r 1 40 1 h l ��l W Sketch: NC DWQ Stream Identification Form Version 4.11 Date: `�� 5- (� Project/Site: �� C' fcCk Latitude:`3C aS7_)3 Evaluator: C 5����5 County: St, f f Longitude: Ao SD a a`} Total Points: Stream is at least intermittent Stream Dete circle one) Other ioa if a19 orperennial if _a 30" Intermitten E hemera Perennial p e. Quad Name:>1n g A. Geomorphology (Subtotal = A 1 Absent Weak Moderate S ng 1a Continuity of channel bed and bank 0 1 3 2. Sinuosity of channel along thalweg 0 1 3 3. In -channel structure: ex. riffle -pool, step -pool, ripple -pool sequence 0 1 � 3 4. Particle size of stream substrate 0 1 2 3 5. Active/relict floodplain 0 1 2 3 6. Depositional bars or benches 0)- 2 3 7. Recent alluvial deposits 0 1 2 3 8. Headcuts 0 1 2 3 9. Grade control W 0.5 1.5 10. Natural valley 0 0.5 1.5 11. Second or greater order channel No 0 Yes = 3 - artificial ditches are not rated; see discussions in manual B. Hvdroloov (Subtotal = q 1 12. Presence of Baseflow 0 1 2 3 13. Iron oxidizing bacteria 0 1 2 3 14. Leaf litter 1.5 1 0.5 0 15. Sediment on plants or debris 0 0. 1 1.5 16. Organic debris lines or piles 0 0: 1 62�1.5 17. Soil -based evidence of high water table? No = 0 Yes f 3 U. b!OIOQV (subtotal = 1. 18. Fibrous roots in streambed 3 2 1 0 19. Rooted upland plants in streambed 3 1 0 20. Macrobenthos (note diversity and abundance) 0 1 2 3 21. Aquatic Mollusks 0 1 2 3 22. Fish 0.5 1 1.5 23. Crayfish 0.5 1 1.5 24. Amphibians 0 0.5 1 1.5 25. Algae 0.5 1 1.5 26. Wetland plants in streambed FACW = 0.75; OBL = 1.5 Other = 0 `perennial streams may also be identified using other methods. See p. 35 of manual. Notes: f ate. Sketch: b �V�Ia,� DAL* t. �v � m Cc4elE IS DAL* I ��.0 Uv` ► �0� 5 LaC P.� �, v4 D 4r� CPI+j NC DWO Stream Identification Form Version 4.11 Date: ,Q-15 Project/Site: CnC uc�� Latitude: g6.;aq(o- Evaluator: Cl eAi; County: � Longitude:'�brj0(O( Total Points: Stream is at least intermittent Stream Deter circle one) Other if 19 or perennial if 2! 30* Ephemeral termitte_q Perennial e.g. Quad Name: A. Geomorphology (Subtotal = I U ) Absent Weak Moderate Strong 18 Continuity of channel bed and bank 0 1 2 2. Sinuosity of channel along thalweg 0 W 2 3 3. In -channel structure: ex. riffle -pool, step -pool, ripple -pool sequence 0 V 2 3 4. Particle size of stream substrate 0 1 3 5. Active/relict floodplain '® 1 2 3 6. Depositional bars or benches 4J 1 2 3 7. Recent alluvial deposits 0 2 3 8. Headcuts 0 2 3 9. Grade control 0 0.5 1 1.5 10. Natural valley 0 0.5 1 1.5 11. Second or greater order channel No 0) Yes = 3 munldal uRUIIWa alc nvI laiau, DCC ulbwb11UI15 III IIIGIIUdI B. Hydrology (Subtotal = $ ) 12. Presence of Baseflow 0 1 02 3 13. Iron oxidizing bacteria 0 1 2 3 14. Leaf litter 1 0.5 0 15. Sediment on plants or debris 5 1 1.5 16. Organic debris lines or piles 0 1 1 1.5 17. Soil -based evidence of high water table? No = 0 Yes U. 131010gy (Subtotal = ks ) 18. Fibrous roots in streambed 3 2 1 0 19. Rooted upland plants in streambed 2 1 0 20. Macrobenthos (note diversity and abundance) 1 2 3 21. Aquatic Mollusks 0 1 2 3 22. Fish 0 0.5 1 1.5 23. Crayfish Q0.5 1 1.5 24. Amphibians Lo 0.5 1 1.5 25. Algae 0 0.5 1 1.5 26. Wetland plants in streambed FACW = 0.75; OBL = 1.5 Other = 0 *perennial streams may also be identified using other methods. See p. 35 of manual. Notes: Sketch: VON C�o A'S) �'op- O NC DWO Stream Identification Form Versinn 4.11 Date: Ab- is (g Project/Site: rn a Latitude: 3%. a $ °1 S 5- Evaluator: County: SU C Longitude: e r S Total Points: Stream is at/east intermittent ,1 Stream Dete n (circle one) Other if >_ 19 or perennial if _> 30* Or1'i Ephemera Intermittent Perennial e.g. Quad Name: r � A. Geomorphology (Subtotal = ( - u ) Absent Weak Moderate St r ng 1 a. Continuity of channel bed and bank 0 1 2 2. Sinuosity of channel along thalweg 0 1 ' 2 3 3. In -channel structure: ex. riffle -pool, step -pool, ripple -pool sequence 0 1 3 4. Particle size of stream substrate 0 1 2 3 5. Active/relict floodplain 0 1 2 3 6. Depositional bars or benches 0 1 2 3 7. Recent alluvial deposits 0 1 2 3 8. Headcuts 0 1 2 3 9. Grade control 0 0.5 1 1.5 10. Natural valley 0 0.5 1 11. Second or greater order channel No 0 Yes = 3 anmciai uncnes are not ratea; see aiscussions in manual B. Hydrologv (Subtotal = 3.5 1 12. Presence of Baseflow 0 1 2 3 13. Iron oxidizing bacteria 0 1 2 3 14. Leaf litter 1.5 0.5 0 15. Sediment on plants or debris 0 1 1.5 16. Organic debris lines or piles 0 0.5 1 1.5 17. Soil -based evidence of high water table? No 0 Yes = 3 C. bioioav (Subtotal = LS 1 18. Fibrous roots in streambed 3 1 0 19. Rooted upland plants in streambed 3 2 1 0 20. Macrobenthos (note diversity and abundance) 0 , 1 2 3 21. Aquatic Mollusks 0) 1 2 3 22. Fish QQ� 0.5 1 1.5 23. Crayfish 0 0.5 1 1.5 24. Amphibians 0.5 1 1.5 25. Algae 0.5 1 1 1.5 26. Wetland plants in streambed FACW = 0.75; OBL = 1.5 Other = 0 *perennial streams may also be identified using other methods. See p. 35 of manual. Notes: Sketch: 'COCrA cum le� ~ � i SU - x'.co, t �T',b U.S. ARMY CORPS OF ENGINEERS WILMINGTON DISTRICT Action 1D: SAW-2017-01510 County: Surry U.S.G.S. Quad: Siloam NOTIFICATION OF JURISDICTIONAL DETERMINATION Property Owner: Edward Brown Address: 3865 Shoals Rd. Pinnacle, NC 27043 Telephone Number: 336-325-2456 Size (acres): 121.34 Nearest Town: Pinnacle Nearest Waterway: Horne Creek Coordinates: 36.28519,-80.50321 River Basin/ HUC: Upper Pee Dee Location description: The site is located at 363 Kiser Rd., Pinnacle, NC 27043 Indicate Which of the Following AAA1V: A. Preliminary Determination X There are waters, including wetlands, on the above described project area, that may be subject to Section 404 of the Clean Water Act (CWA)(33 USC § 1344) and/or Section 10 of the Rivers and Harbors Act (RHA) (33 USC § 403). The waters, including wetlands, have been delineated, and the delineation has been verified by the Corps to be sufficiently accurate and reliable. Therefore this preliminary jurisdiction determination may be used in the permit evaluation process, including determining compensatory mitigation. For purposes of computation of impacts, compensatory mitigation requirements, and other resource protection measures, a permit decision made on the basis of a preliminary JD will treat all waters and wetlands that would be affected in any way by the permitted activity on the site as if they are jurisdictional waters of the U.S. This preliminary determination is not an appealable action under the Regulatory Program Administrative Appeal Process (Reference 33 CFR Part 331). However, you may request an approved JD, which is an appealable action, by contacting the Corps district for further instruction. There are wetlands on the above described property, that may be subject to Section 404 of the Clean Water Act (CWA)(33 USC § 1344) and/or Section 10 of the Rivers and Harbors Act (RHA) (33 USC § 403). However, since the waters, including wetlands, have not been properly delineated, this preliminary jurisdiction determination may not be used in the permit evaluation process. Without a verified wetland delineation, this preliminary determination is merely an effective presumption of C WA/RHA jurisdiction overall of the waters, including wetlands, at the project area, which is not sufficiently accurate and reliable to support an enforceable permit decision. We recommend that you have the waters of the U.S. on your property delineated. As the Corps may not be able to accomplish this wetland delineation in a timely manner, you may wish to obtain a consultant to conduct a delineation that can be verified by the Corps. B. Approved Determination _ There are Navigable Waters of the United States within the above described property subject to the permit requirements of Section 10 of the Rivers and Harbors Act (RHA) (33 USC § 403) and Section 404 of the Clean Water Act (CWA)(33 USC § 1344). Unless there is a change in the law or our published regulations, this determination may be relied upon for a period not to exceed five years from the date of this notification. _ There are waters of the U.S, including wetlands on the above described property subj ect to the permit requirements of Section 404 of the Clean Water Act (CWA)(33 USC § 1344). Unless there is a change in the law or our published regulations, this determination may be relied upon for a period not to exceed five years from the date of this notification. We recommend you have the waters of the U.S. on your property delineated. As the Corps may not be able to accomplish this wetland delineation in a timely manner, you may wish to obtain a consultant to conduct a delineation that can be verified by the Corps. The waters of the U.S. including wetlands on your project area have been delineated and the delineation has been verified by the Corps. If you wish to have the delineation surveyed, the Corps can review and verify the survey upon completion. Once verified, this survey will provide an accurate depiction of all areas subject to CWA and/or RHA jurisdiction on your property which, provided there is no change in the law or our published regulations, may be relied upon for a period not to exceed five years. _ The waters of the U.S. including wetlands have been delineated and surveyed and are accurately depicted on the plat signed by the Corps Regulatory Official identified below on Unless there is a change in the law or our published regulations, this determination may be relied upon for a period not to exceed five years from the date of this notification. _ There are no waters of the U.S., to include wetlands, present on the above described project area which are subject to the permit requirements of Section 404 of the Clean Water Act (33 USC 1344). Unless there is a change in the law or our published regulations, this determination may be relied upon for a period not to exceed five years from the date of this notification. The property is located in one of the 20 Coastal Counties subject to regulation under the Coastal Area Management Act (CAMA). You should contact the Division of Coastal Management to determine their requirements. Placement of dredged or fill material within waters of the US and/or wetlands without a Department of the Army permit may constitute a violation of Section 301 of the Clean Water Act (33 USC § 1311). Placement of dredged or fill material, construction or placement of structures, or work within navigable waters of the United States without a Department of the Army permit may constitute a violation of Sections 9 and/or 10 of the Rivers and Harbors Act (33 USC § 401 and/or 403). If you have any questions regarding this determination and/or the Corps regulatory program, please contact William Elliott at 828-271-7980, ext. 4225 or amanda.jones@usace.army.mil. C. Basis for Determination: See attached preliminary jurisdictional determination form. The site contains wetlands as determined by the 1987 Corps of Engineers Wetland Delineation Manual and the Regional Supplement to the Corps of Engineers Wetlands Delineation Manual: Eastern Mountain and Piedmont Region (version 2.0). These wetlands are adjacent to stream channels located on the property that exhibit indicators of ordinary high water marks. The stream channel on the property is an unnamed tributary (UT) to" Horne Creek which flows into the Yadkin River. D. Remarks: The potential waters of the U.S., at this site, were verified on -site by the Corps on 2/19/2019and are as approximately depicted on the attached Potential Wetland/Waters Map E. Attention USDA Program Participants This delineation/detenrimation has been conducted to identify the limits of Corps' Clean Water Act jurisdiction for the particular site identified in this request. The delineation/determination may not be valid for the wetland conservation provisions of the Food Security Act of 1985. If you or your tenant are USDA Program participants, or anticipate participation in USDA programs, you should request a certified wetland determination from the local office of the Natural Resources Conservation Service, prior to starting work. F. Appeals Information (This information applies only to approved jurisdictional determinations as indicated in B. above) This correspondence constitutes an approved jurisdictional determination for the above described site. If you object m this determination, you may request an administrative appeal under Corps regulations at 33 CFR Part 331. Enclosed you will find a Notification of Appeal Process (NAP) fact sheet and request for appeal (RFA) form. If you request to appeal this determination you must submit completed RFA form to the following address: US Army Corps of Engineers South Atlantic Division Attn: Jason Steele, Review Officer 60 Forsyth Street SW, Room 1OM15 Atlanta, Georgia 30303-8801 In order for an RFA to be accepted by the Corps, the Corps must determine that it is complete, that it meets the criteria for appeal under 33 CFR part 331,5, and that it has been received by the Division Office within 60 days of the date of the NAP. Should you decide to submit an RFA form, it must be received at the above address by N/A (Preliminary -JD). **It is not necessary to submit an RFA to to the Division Office ' on do not ject to the determination in this correspondence,** X o Corps Regulatory Official: William Elliott Issue Date of JD: March 26, 2019 Expiration Date: N/A Preliminary JD The Wilmington District is committed to providing the highest level of support to the public. To help us ensure we continue to do so, please complete our Customer Satisfaction Survey, located online at http://corpsmgpu.usaec.gM.mil/cm apex/f?p=136:4:0. Copy furnished: Adam V. McIntyre -Water & Land Solutions, 7721 Six Forks Rd. Ste 130, Raleigh, NC 27615 NOTIFICATION OF ADMINISTRATIVE APPEAL OPTIONS AND PROCESS AND REQUEST FOR APPEAL Applicant: Edward Brown File Number: SAW-SAW-2017-01510 1 Date: March 26, 2019 Attached is: See Section below ❑ INITIAL PROFFERED PERMIT Standard Permit or Letter of ermission) A ❑ PROFFERED PERMIT (Standard Permit or Letter of permission) B ❑ PERMIT DENIAL C ❑ APPROVED JURISDICTIONAL DETERMINATION D ® PRELIMINARY JURISDICTIONAL DETERMINATION E SECTION I - The following identifies your rights and options regarding an administrative appeal of the above decision. Additional information maybe found at littp:Hl ""v.usace.army.mil/Missions/Civi]Works[Re ug latoUProjzramandPeiinits.aspx or Corps regulations at 33 CFR Part 331. A: INITIAL PROFFERED PERMIT: You may acceptor object to the permit. • ACCEPT: If you received a Standard Permit, you may sign the permit document and return it to the district engineer for final authorization. If you received a Letter of Permission (LOP), you may accept the LOP and your work is authorized. Your signature on the Standard Permit or acceptance of the LOP means that you accept the permit in its entirety, and waive all rights to appeal the permit, including its terms and conditions, and approved jurisdictional determinations associated with the permit. • OBJECT: If you object to the permit (Standard or LOP) because of certain terms and conditions therein, you may request that the permit be modified accordingly. You must complete Section It of this form and return the form to the district engineer. Your objections must be received by the district engineer within 60 days of the date of this notice, or you will forfeit your right to appeal the permit in the future. Upon receipt of your letter, the district engineer will evaluate your objections and may: (a) modify the permit to address all of your concerns, (b) modify the permit to address some of your objections, or (c) not modify the permit having determined that the permit should be issued as previously written. After evaluating your objections, the district engineer will send you a proffered permit for your reconsideration, as indicated in Section B below. B: PROFFERED PERMIT: You may accept or appeal the permit • ACCEPT: If you received a Standard Permit, you may sign the permit document and return it to the district engineer for final authorization. If you received a Letter of Permission (LOP), you may accept the LOP and your work is authorized. Your signature on the Standard Permit or acceptance of the LOP means that you accept the permit in its entirety, and waive all rights to appeal the permit, including its terms and conditions, and approved jurisdictional determinations associated with the permit. • APPEAL: If you choose to decline the proffered permit (Standard or LOP) because of certain terms and conditions therein, you may appeal the declined permit under the Corps of Engineers Administrative Appeal Process by completing Section II of this form and sending the form to the division engineer. This form must be received by the division engineer within 60 days of the date of this notice. C: PERMIT DENIAL: You may appeal the denial of a permit under the Corps of Engineers Administrative Appeal Process by completing Section II of this form and sending the form to the division engineer. This form must be received by the division engineer within 60 days of the date of this notice. D: APPROVED JURISDICTIONAL DETERMINATION: You may accept or appeal the approved JD or provide new information. • ACCEPT: You do not need to notify the Corps to accept an approved JD. Failure to notify the Corps within 60 days of the date of this notice, means that you accept the approved JD in its entirety, and waive all rights to appeal the approved JD. • APPEAL: If you disagree with the approved JD, you may appeal the approved JD under the Corps of Engineers Administrative Appeal Process by completing Section B of this form and sending the form to the district engineer. This form must be received by the division engineer within 60 days of the date of this notice. E: PRELIMINARY JURISDICTIONAL DETERMINATION: You do not need to respond to the Corps regarding the preliminary JD. The Preliminary JD is not appealable. If you wish, you may request an approved JD (which may be appealed), by contacting the Corps district for further instruction. Also you may provide new information for further consideration by the Corps to reevaluate the JD. 4 SECTION II - REQUEST FOR APPEAL or OBJECTIONS TO AN INITIAL PROFFERED PERMIT REASONS FOR APPEAL OR OBJECTIONS: (Describe your reasons for appealing the decision or your objections to an initial proffered permit in clear concise statements. You may attach additional information to this form to clarify where your reasons or objections are addressed in the administrative record.) ADDITIONAL INFORMATION: The appeal is limited to a review of the administrative record, the Corps memorandum for the record of the appeal conference or meeting, and any supplemental information that the review officer has determined is needed to clarify the administrative record. Neither the appellant nor the Corps may add new information or analyses to the record. However, you may provide additional information to clarify the location of information that is already in the administrative record. POINT OF CONTACT FOR QUESTIONS OR INFORMATION: If you have questions regarding this decision and/or the If you only have questions regarding the appeal process you may appeal process you may contact: also contact: District Engineer, Wilmington Regulatory Division, Mr. Jason Steele, Administrative Appeal Review Officer Attn: William Elliott CESAD-PDO 151 Patton Avenue, Room 208 U.S. Army Corps of Engineers, South Atlantic Division Asheville, North Carolina 28801-5006 60 Forsyth Street, Room IOM15 828-271-7980, ext. 4232 Atlanta, Georgia 30303-8801 Phone: (404) 562-5137 . RIGHT OF ENTRY: Your signature below grants the right of entry to Corps of Engineers personnel, and any government consultants, to conduct investigations of the project site during the course of the appeal process. You will be provided a 15 day notice of any site investigation, and will have the opportunity to participate in all site investigations. Date: Telephone number: Signature of appellant or agent. For appeals on Initial Proffered Permits send this form to: District Engineer, Wilmington Regulatory Division, Alto.: William Elliott, 69 Darlington Avenue, Wilmington, North Carolina 28403 For Permit denials, Proffered Permits and approved Jurisdictional Determinations send this form to: Division Engineer, Commander, U.S. Army Engineer Division, South Atlantic, Attn: Mr. Jason Steele, Administrative Appeal Officer, CESAD-PDO, 60 Forsyth Street, Room 1OM15, Atlanta, Georgia 30303-8801 Phone: (404) 562-5137 PRELIMINARY JURISDICTIONAL DETERMINATION (JD) FORM U.S. Army Corps of Engineers BACKGROUND INFORMATION A. REPORT COMPLETION DATE FOR PRELIMINARY JD: March 26, 2019 B. NAME AND ADDRESS OF PERSON REQUESTING PRELIMINARY JD: Edward Brown 3865 Shoals Rd, Pinnacle, NC 27043 C. DISTRICT OFFICE, FILE NAME, AND NUMBER: CESAW-RG-A, SAW-2017-01510, D. PROJECT LOCATION(S) AND BACKGROUND INFORMATION: The site is located at 363 Kiger Rd., Pinnacle, NC 27043 State: NC County/parish/borough: Sorry City: Pinnacle Center coordinates of site (lat/long in degree decimal format): 36.28519,-80.50321 Universal Transverse Mercator: N/A Name of nearestwaterbody: Horne Creels E. REVIEW PERFORMED FOR SITE EVALUATION (CHECK ALL THAT APPLY): M Office (Desk) Determination. Date: March 26, 203.9 to FieldDetermination. Date(s): 2/19/2019 Use the table below to document aquatic resources and/or aquatic resources at different sites TABLE OF AQUATIC RESOURCES INREVIEW AREA WHICH "MAY BE" SUBJECT TO REGULATORY JURISDICTION Site Centered Coordinates Estimated Amount Type of Aquatic Geographic - Number (decimal degrees) of Aquatic Resource Resources Authority to Which in Review Area Aquatic Resource Latitude Longitude (linear feet or acre) "May Be" Subject See Attach List 0 Wetland [I Section 404 Non -wetland Waters 1] Section 10/404 �] Wetland ] Section 404 Q Non -wetland Waters ❑ Section 10/404 [] Wetland [] Section 404 ❑ Non -wetland Waters ❑ Section 101404 Wetland [ Section 404 Non -wetland Waters ❑ Section 101404 Wetland ❑ Section 404 p Non -wetland Waters ❑ Section 10/404 Wetland ] Section 404 Non -wetland Waters [] Section 10/404 Wetland ❑ Section 404 0 Non -wetland Waters ❑ Section 10/404 ❑Wetland ❑ Section 404 Non -wetland Watersl Q Section 10/404 1. The Corps of Engineers believes that there may be jurisdictional aquatic resources in the review area, and the requestor of this PJD is hereby advised of his or her option to request and obtain an approved JD (AJD) for that review area based on an informed decision after having discussed the various types of JDs and their characteristics and circumstances when they may be appropriate. 2. In any circumstance where a permit applicant obtains an individual permit, or a Nationwide General Permit (NWP) or other general permit verification requiring "pre- construction notification" (PCN), or requests verification for a non -reporting NWP or other general permit, and the permit applicant has not requested an AJD for the activity, the permit applicant is hereby made aware that: (1) the permit applicant has elected to seek a permit authorization based on a PJD, which does not make an official determination of jurisdictional aquatic resources; (2) the applicant has the option to request an AJD before accepting the terms and conditions of the permit authorization, and that basing a permit authorization on an AJD could possibly result in less compensatory mitigation being required or different special conditions; (3) the applicant has the right to request an individual permit rather than accepting the terms and conditions of the NWP or other general permit authorization; (4) the applicant can accept a permit authorization and thereby agree to comply with all the terms and conditions of that permit, including whatever mitigation requirements the Corps has determined to be necessary; (5) undertaking any activity in reliance upon the subject permit authorization without requesting an AJD constitutes the applicant's acceptance of the use of the PJD; (6) accepting a permit authorization (e.g, signing a proffered individual permit) or undertaking any activity in reliance on any form of Corps permit authorization based on a PJD constitutes agreement that all aquatic resources in the review area affected in any way by that activity will be treated as jurisdictional, and waives any challenge to such jurisdiction in any administrative or judicial compliance or enforcement action, or in any administrative appeal or in any Federal court; and O whether the applicant elects to use either an AJD or a PJD, the JD will be processed as soon as practicable. Further, an AJD, a proffered individual permit (and all terms and conditions contained therein), or individual permit denial can be administratively appealed pursuant to 33 C.F.R. Part 331. If, during an administrative appeal, it becomes appropriate to make an official determination whether geographic jurisdiction exists over aquatic resources in the review area, or to provide an official delineation of jurisdictional aquatic resources in the review area, the Corps will provide an AJD to accomplish that result, as soon as is practicable. This PJD finds that there "may be" waters of the U.S, and/or that there "may be" navigable waters of the U.S. on the subject review area, and identifies all aquatic features in the review area that could be affected by the proposed activity, based on the following information: SUPPORTING DATA Data reviewed for preliminary JD (check all that apply) - Checked items should be included in subject file. Appropriately reference sources below where indicated for all checked items: Maps, plans, plots or plat submitted by or on behalf of preliminary JD requester: Data sheets prepared/submitted by or on behalf of preliminary JD requester. ® Office concurs with data sheets/delineation report. ❑ Office does not concur with data sheets/delineation report. Rational: Data sheets prepared by the Corps: Corps navigable waters' study: U.S. Geological Survey (USGS) Hydrologic Atlas: ❑ USGS NHD data. ® USGS 8 and 12 digit HUC maps. ❑ USGS map(s). Cite scale & quad name: Siloam. to Natural Resources Conservation Service (NRCS) Soil Survey. Citation: Surry County, NC ❑ National wetlands inventory (NWI) map(s). Cite name: ❑ State/Local wetland inventory map(s): ❑ Federal Emergency Management Agency (FEMA) / Flood Insurance Rate Map (FIRM) maps: ❑ 100-year Floodplain Elevation is: (National Geodectic Vertical Datum of 1929) ® Photographs: ® Aerial (Name & Date): or ❑ Other (Name & Date): ❑ Previous determination(s). File no. and date of response letter: ❑ Applicable/supporting scientific literature: ❑ Other information (please specify): IMPORTANT NOTE: The information recorded on this form has not necessarily been verified by the Corps and should not be relied upon for later jurisdictyfial deter ' ations. William Elliott, March 26, 2019 Edward Brown Signature and date of Regulatory Signature and date of person requesting staff member completing preliminary JD (REQUIRED, unless obtaining the preliminary JD signature is impracticable) Two copies of this Preliminary JD Form have been provided Please sign both copies. Keep one signed copy for your record and return a signed copy to the Asheville Regulatory Field Office by nail or e-mail. USArmy Corps of Engineers- Wilmington District Asheville Regulatory Field Office 151 Patton Avenue, Room 208 Asheville, NC28801-5006 '.Districts may establish timefiames for requester to return signed PJD forms. If the requester does not respond within the established time frame, the district may presume concurrence and no additional follow up is necessary prior to finalizing an action. Site # Latitude Longitude Estimated amount of resource in review area (acreage and linear ft, if applicable) Type of aquatic resource (i.e. wetland vs. non- wetland waters) Geographic authority to which the aquatic resource "may be" subject (i.e. Section 404 or Section 10/401) WA 36.282565 -80.510192 0.005 ac Wetland Section 404/401 WB 36.287452 -80.50265 0.076 ac Wetland Section 404/401 WC 36.287756 -80.50232 0.093 ac Wetland Section 404/401 WD 36.28756 -80.501849 0.175 ac Wetland Section 404/401 S1 36.289687 -80.500118 291 If Non -wetland Section 404/401 S2 36.289516 -80.501029 41 If Non -wetland Section 404/401 S3 36.289357 -80.500934 3,340 If Non -wetland Section 404/401 S4 36.287641 -80.502223 123 If Non -wetland Section 404/401 S5 36.287410 -80.502623 71 If Non -wetland Section 404/401 . S6 36.282523 -80.510805 1,267 Non -wetland Section 404/401 It A ftO Jot Water & Land Solutions Horne Creek Tributaries Mitigation Project Appendix 10 – Invasive Species Plan WLS will treat invasive species vegetation within the project area and provide remedial action on a case by-case basis. Common invasive species vegetation, such as Chinese privet (Ligustrum sinense) and Multiflora rose (Rosa multiflora), will be removed to allow native plants to become established within the conservation easement. Invasive species vegetation will be treated by approved mechanical and/or chemical methods such that the percent composition of exotic/invasive species vegetation is less than 5% of the total riparian buffer area. Any control methods requiring herbicide application will be performed in accordance with NC Department of Agriculture (NCDA) rules and regulations. If necessary, these removal treatments (i.e., cutting and/or spraying) will continue until the corrective actions demonstrate that the site is trending towards or meeting the standard monitoring requirement. Water & Land Solutions Horne Creek Tributaries Mitigation Project Appendix 11 – Approved FHWA Categorical Exclusion Form Appendix A Categorical Exclusion Form for Ecosystem Enhancement Program Projects Version 1.4 Note: Only Appendix A should to be submitted (along with any supporting documentation) as the environmental document. Part 1: General Project Name: i Horne Creek Tributaries M—itLqation Pro ect Coun Name: Sur County EEP Number: DMS #100026, DMS Contract #7181 Project Sponsor: Water &Land Solutions, LLC Project Contact Name: William "Scott' Hunt, III, PE Project Contact Address: 11 330 Raven Ride Road, Ste. 119, Ralei h, NC 27614 Project Contact E-mail: scoff waterlandsolutions.com EEP Project Mana er: Matthew Reid Project Description The Home Creek Tributaries Mtigation Project is a full -delivery project for the NCDEQ Division of Mitigation Services (DMS) identified and contracted to provide stream mitigation credits for permitted, unavoidable impacts in the Yadkin River Basin, Cataloging Unit 03040101. The project vaill involve the restoration, enhancement, and permanent protection of seven stream reaches (Reaches R1, R2, R3, R4, R4a, R4b, and R5), totaling approximately 5,139 linear feet of existing streams that comprise the headwaters of Home Creek. In addition, the adjacent riparian wetlands and riparian buffers will be restored, and the entire restored corridor vrill be protected by a permanent conservation easement to be held by the State of North Carolina. The project site consists of a degraded headwater stream and riparian wetland system that flaws through active cattle pastures, into the headwaters of Horne Creek. The proposed restoration project not only has the potential to provide at least 5.389 stream mitigation credits, but will also provide significant ecological improvements and functional uplift through habitat restoration, and through decreasing nutrient and sediment loads from the project watershed. The project is located in Surry County approximately seven miles southwest of the Town of Pilot Mountain. For Official Use Only Reviewed By: e Date EEP Project Manager Conditional Approved By: Date For Division Administrator FHWA ❑ Check this box if there are outstanding issues Final Approval By: 1 - z 1- 17 Date For Division Administrator FHWA Version 1.4, 8/16/05 Version 1.4, 8/16/05 1 Part 2: All Projects Regulation/Question Response Coastal Zone Management Act (CZMA) 1. Is the project located in a CAMA county? Yes No 2. Does the project involve ground-disturbing activities within a CAMA Area of Environmental Concern (AEC)? Yes No N/A 3. Has a CAMA permit been secured? Yes No N/A 4. Has NCDCM agreed that the project is consistent with the NC Coastal Management Program? Yes No N/A Comprehensive Environmental Response, Compensation and Liability Act (CERCLA) 1. Is this a “full-delivery” project? Yes No 2. Has the zoning/land use of the subject property and adjacent properties ever been designated as commercial or industrial? Yes No N/A 3. As a result of a limited Phase I Site Assessment, are there known or potential hazardous waste sites within or adjacent to the project area? Yes No N/A 4. As a result of a Phase I Site Assessment, are there known or potential hazardous waste sites within or adjacent to the project area? Yes No N/A 5. As a result of a Phase II Site Assessment, are there known or potential hazardous waste sites within the project area? Yes No N/A 6. Is there an approved hazardous mitigation plan? Yes No N/A National Historic Preservation Act (Section 106) 1. Are there properties listed on, or eligible for listing on, the National Register of Historic Places in the project area? Yes No 2. Does the project affect such properties and does the SHPO/THPO concur? Yes No N/A 3. If the effects are adverse, have they been resolved? Yes No N/A Uniform Relocation Assistance and Real Property Acquisition Policies Act (Uniform Act) 1. Is this a “full-delivery” project? Yes No 2. Does the project require the acquisition of real estate? Yes No N/A 3. Was the property acquisition completed prior to the intent to use federal funds? Yes No N/A 4. Has the owner of the property been informed: * prior to making an offer that the agency does not have condemnation authority; and * what the fair market value is believed to be? Yes No N/A Version 1.4, 8/16/05 2 Part 3: Ground-Disturbing Activities Regulation/Question Response American Indian Religious Freedom Act (AIRFA) 1. Is the project located in a county claimed as “territory” by the Eastern Band of Cherokee Indians? Yes No 2. Is the site of religious importance to American Indians? Yes No N/A 3. Is the project listed on, or eligible for listing on, the National Register of Historic Places? Yes No N/A 4. Have the effects of the project on this site been considered? Yes No N/A Antiquities Act (AA) 1. Is the project located on Federal lands? Yes No 2. Will there be loss or destruction of historic or prehistoric ruins, monuments or objects of antiquity? Yes No N/A 3. Will a permit from the appropriate Federal agency be required? Yes No N/A 4. Has a permit been obtained? Yes No N/A Archaeological Resources Protection Act (ARPA) 1. Is the project located on federal or Indian lands (reservation)? Yes No 2. Will there be a loss or destruction of archaeological resources? Yes No N/A 3. Will a permit from the appropriate Federal agency be required? Yes No N/A 4. Has a permit been obtained? Yes No N/A Endangered Species Act (ESA) 1. Are federal Threatened and Endangered species and/or Designated Critical Habitat listed for the county? Yes No 2. Is Designated Critical Habitat or suitable habitat present for listed species? Yes No N/A 3. Are T&E species present or is the project being conducted in Designated Critical Habitat? Yes No N/A 4. Is the project “likely to adversely affect” the specie and/or “likely to adversely modify” Designated Critical Habitat? Yes No N/A 5. Does the USFWS/NOAA-Fisheries concur in the effects determination? Yes No N/A 6. Has the USFWS/NOAA-Fisheries rendered a “jeopardy” determination? Yes No N/A Version 1.4, 8/16/05 3 Executive Order 13007 (Indian Sacred Sites) 1. Is the project located on Federal lands that are within a county claimed as “territory” by the EBCI? Yes No 2. Has the EBCI indicated that Indian sacred sites may be impacted by the proposed project? Yes No N/A 3. Have accommodations been made for access to and ceremonial use of Indian sacred sites? Yes No N/A Farmland Protection Policy Act (FPPA) 1. Will real estate be acquired? Yes No 2. Has NRCS determined that the project contains prime, unique, statewide or locally important farmland? Yes No N/A 3. Has the completed Form AD-1006 been submitted to NRCS? Yes No N/A Fish and Wildlife Coordination Act (FWCA) 1. Will the project impound, divert, channel deepen, or otherwise control/modify any water body? Yes No 2. Have the USFWS and the NCWRC been consulted? Yes No N/A Land and Water Conservation Fund Act (Section 6(f)) 1. Will the project require the conversion of such property to a use other than public, outdoor recreation? Yes No 2. Has the NPS approved of the conversion? Yes No N/A Magnuson-Stevens Fishery Conservation and Management Act (Essential Fish Habitat) 1. Is the project located in an estuarine system? Yes No 2. Is suitable habitat present for EFH-protected species? Yes No N/A 3. Is sufficient design information available to make a determination of the effect of the project on EFH? Yes No N/A 4. Will the project adversely affect EFH? Yes No N/A 5. Has consultation with NOAA-Fisheries occurred? Yes No N/A Migratory Bird Treaty Act (MBTA) 1. Does the USFWS have any recommendations with the project relative to the MBTA? Yes No 2. Have the USFWS recommendations been incorporated? Yes No N/A Wilderness Act 1. Is the project in a Wilderness area? Yes No 2. Has a special use permit and/or easement been obtained from the maintaining federal agency? Yes No N/A Water & Land Solutions Horne Creek Tributaries Mitigation Project Appendix 12 – Agency Correspondence waterlandsolutions.com | 11030 Raven Ridge Rd, Ste 119, Raleigh, NC 27614 | 919-614-5111 Meeting Minutes Yadkin 03040101 Full-Delivery Project: Horne Creek Tributaries Mitigation Project (NCDEQ DMS Contract # 7181, Project ID # 1000026) Subject: NCIRT Post-Contract Site Meeting Date Prepared: September 19, 2017 Meeting Date and Time: August 30, 2017 @ 1000 Meeting Location: On-site (Surry County, NC) Recorded By: Kayne VanStell and Chris Tomsic Attendees: USACE: Todd Tugwell (NCIRT) and Kim Browning (NCIRT) NCDEQ DWR: Mac Haupt (NCIRT) NCWRC: Andrea Leslie and Olivia Munzer NCDEQ DMS: Paul Wiesner and Matthew Reid ES: Chris Tomsic and Kip Mumaw WLS: Kayne VanStell and Scott Hunt These meeting minutes document notes and discussion points from the North Carolina Interagency Review Team (NCIRT) Post-Contract Site Meeting for the Horne Creek Tributaries Mitigation Project (Yadkin River Basin, CU 03040101, Warm Water Thermal Regime). This full-delivery project was contracted on June 1, 2017, by the North Carolina Department of Environmental Quality (NCDEQ), Division of Mitigation Services (DMS), with Water & Land Solutions, LLC (WLS), under RFP 16-006993. The project site is located in Surry County, North Carolina, in the Shoals Community, near Pilot Mountain, North Carolina. The meeting began at 1000 with introductions and a general summary of the overall project concepts. After the project introduction and overview, attendees toured the project site to review existing conditions and proposed mitigation types, strategies, and design concepts. The project site review notes are presented below in the order they were visited. waterlandsolutions.com | 11030 Raven Ridge Rd, Ste 119, Raleigh, NC 27614 | 919-614-5111 1. Todd Tugwell asked where the jurisdictional stream call for Reach 2 was located. It was noted that the unverified jurisdictional stream call was approximately 100’ downstream from the start of the water quality improvement feature. The NCIRT generally agreed with the approximate location, but suggested that the determination could be conservative and may be considered approximately 100’ upstream of the initial stream call. 2. Andrea Leslie asked how the water quality improvement features would be designed and operate. It was explained that the water quality improvement features will be designed for initial stream flow attenuation and nutrient treatment. The water quality improvement feature would start at an existing rip rap/rock outfall and flow through a series of step-pools/depressions. The NCIRT agreed with the approach for the water quality improvement features. 3. It was explained that the Water quality improvement features would be excluded from the conservation easement. It was WLS’s understanding based on previous conversations that this was the NCIRT’s position. Andrea Leslie suggested that incorporating the water quality improvement features within the conservation easement should be considered so that they can be protected from future development. There was a concern about how the water quality improvement features could/would be maintained after the project went into stewardship. It was explained that there could be a maintenance agreement to allow for periodic maintenance. However, it was expressed that the water quality improvement features will be designed to be self-maintaining and therefore should not require annual maintenance following project close- out. 4. Todd Tugwell commented that a concern of his in Reach 2 is maintaining stream jurisdiction following restoration. It was explained that design approach and past experience with similar projects within the watershed will allow for maintaining stream jurisdiction. It was further discussed that the water quality improvement feature will allow for a slower release of water to Reach 2 allowing for some attenuation rather than a rapid flush that is currently occurring. Todd Tugwell suggested that this should be clearly explained in the mitigation plan. 5. Andrea Leslie asked about the stream design approach on Reach 2. It was explained that the stream would start at the downstream extent of the water quality improvement feature and would designed as a nested Rosgen ‘B’ or ‘Bc’ stream type channel. The existing channel would be filled several feet, and a floodplain bench would be created to maintain proper entrenchment, and banks would be sloped up to existing ground. In general, the channel would be restored more like a shallow Priority Level 2 approach. Any large trees would be protected and/or incorporated into the design. Todd Tugwell suggested that the channel could be relocated into the right floodplain. WLS made note of this suggestion and commented that all options will be explored to design and construct a stable stream system. 6. General discussion about Reach 3. It was noted where the jurisdiction determination was made and Todd Tugwell generally agreed with the jurisdictional determination, but suggested that the determination could be conservative and may be considered approximately 100’ upstream of the initial stream call. waterlandsolutions.com | 11030 Raven Ridge Rd, Ste 119, Raleigh, NC 27614 | 919-614-5111 7. Similar conversations about Reach 2, water quality improvement features were discussed in regards to Reach 3 water quality improvement features. 8. General discussions about the restoration approach on Reach 4. It was explained that the stream bed will be raised gradually and the existing channel will be filled starting from Reach 2 and transitioning into Reach 4. The new design channel will be gradually relocated to tie from the existing top of bank in order to meet the design top of bank. The design will capture relic channels in areas through the Reach. 9. General discussions about Reach 4A and 4B design approaches. The NCIRT members agreed with the proposed design approach on both these reaches. 10. Olivia Munzer asked about existing large trees throughout the project and the option to maintain tree snags for terrestrial habitat. It was explained that all efforts will be made to preserve and/or incorporate large trees within the project limits. Any trees that must be removed will be fully utilized in the stream design. Any dead standing trees that serve as habitat for terrestrial species will be incorporated into the design where appropriate and applicable. New tree snags will be included in the design where appropriate and applicable so as to not detrimentally effect the stream design and surrounding project amenities including fencing and cattle waterers. Olivia agreed with this approach. 11. General discussion regarding Reach 5. It was explained that the new channel alignment would utilize more of the left floodplain in the area where the Reach has minimal riparian corridor and has been generally straightened. The NCIRT members agreed with this proposed mitigation approach. 12. General discussion regarding Reach 1. There was further conversation about the water quality improvement feature being excluded from the conservation easement. It was reiterated by WLS that this was the preferred approach by the NCIRT. Andrea Leslie again stated that protecting the water quality improvement feature minimally with fencing around the feature or including in the conservation easement is strongly encouraged. WLS agreed with this recommendation and indicated that this would be addressed fully in the mitigation plan. Additional and Concluding Comments The NCIRT expressed that overall, they accepted the proposed project mitigation approaches for all seven (7) Reaches. Todd Tugwell reiterated that he does have concern with maintaining stream jurisdiction in Reaches in 2 and 3. WLS explained that this concern would be incorporated in the design process and would be abated based on the design approach and past experience with similar projects, as well as the water quality improvement features ability to allow for slow release of water into stream Reaches. Todd Tugwell also said that WLS should have a jurisdictional determination conducted on Reaches 2 and 3 for final stream nexus location. waterlandsolutions.com | 11030 Raven Ridge Rd, Ste 119, Raleigh, NC 27614 | 919-614-5111 Please be aware that although some intermittent/ephemeral break locations were discussed during the site visit, a full Jurisdictional Determination will need to be completed for each of the project reaches at the site and included in the Mitigation Plan. There were several occasions throughout the meeting where the need for flow gages and/or trail cameras would be used to document flow in reaches of concern. The gage type, locations (map), sampling frequency and the associated success criteria should be presented in the mitigation plan. The above minutes represents Water & Land Solutions’ interpretation and understanding of the meeting discussion and actions. If recipients of these minutes should find any information contained in these minutes to be in error, incomplete, please notify the author with appropriate corrections and/or additions within five (5) business days to allow adequate time for correction and redistribution.