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HomeMy WebLinkAbout20060451 Ver 1_COMPLETE FILE_20060316W AT hi-d-I ON44?? '-?' Michael F. Easley, Governor William G. Ross Jr., Secretary North Carolina Department of Environment and Natural Resources Alan W. Klimek, P.E. Director Division of Water Quality March 27, 2006 DWQ# 06-0451 Mecklenburg County Mr. Isaac Hinson City of Charlotte, Stormwater Services 600 East Fourth St. Charlotte, NC 28202 Subject: 2103 Vernon Dr., Charlotte APPROVAL of 401 Water Quality Certification with Additional Conditions Dear Mr. Hinson: You have our approval, in accordance with the attached conditions and those listed below, to impact 70 linear feet (If) of unnamed stream to Briar Creek in order to complete the stream improvement project in Mecklenburg County, as described in your application received by the Division of Water Quality (DWQ) on March 16, 2006. After reviewing your application, we have determined that this project is covered by Water Quality General Certification Number 3495, which can be viewed on our web site at http://h2o.enr.state.nc.us/ncwetlands. The General Certification allows you to use Nationwide Permit Number 13 once it is issued to you by the U.S. Army Corps of Engineers. Please note that you should get any other federal, state or local permits before proceeding with your project, including those required by (but not limited to) Sediment and Erosion Control, Non-Discharge, and Water Supply Watershed regulations. The above noted Certification will expire when the associated 404 permit expires unless otherwise specified in the General Certification. This approval is only valid for the purpose and design that you described in your application. If you change your project, you must notify us in writing, and you may be required to send us a new application for a new certification. If the property is sold, the new owner must be given a copy of the Certification and approval letter; and is thereby responsible for complying with all conditions. In addition to the requirements of the certification, you must also comply with the following conditions: 1. Use of native vegetation and other soft stream bank stabilization techniques must be used where practicable instead of riprap or other bank hardening methods. If riprap is necessary, it shall not be placed in the streambed, unless approved by the DWQ. 2. No waste, spoil, solids, or fill of any kind shall occur in wetlands, waters, or riparian areas beyond the footprint of the impacts depicted in the Preconstruction Notification application. All construction activities associated with this project shall meet, and/or exceed, those requirements specified in the most recent version of the North Carolina Sediment and Erosion Control Manual and shall be conducted so that no violations of state water quality standards, statutes, or rules occur. 3. Sediment and erosion control measures shall not be placed in wetlands or waters to the maximum extent practicable. If placement of sediment and erosion control devices in wetlands and waters is unavoidable, they shall be removed and the natural grade restored within two months of the date the Division of Land Resources has released the project. None Carolina ?tura!!y North Carolina Division of Water Quality 610 East Center Ave., Suite 301 Mooresville, NC 28115 Phone (704) 663-1699 Customer Service Internet: ncwaterqulaity.org FAX (704) 663-6040 1-877-623-6748 An Equal Opportunity/Affirmative Action Employer - 50% Recycled/10% Post Consumer Paper 4. Upon completion of the project, the applicant shall complete and return the enclosed "Certificate of Completion" form to the 401 /Wetlands Unit of the NC Division of Water Quality. 5 Continuing Compliance. The applicant (City of Charlotte) shall conduct all activities in a manner so as not contravene any state water quality standard (including any requirements for compliance with section 303(d of the Clean Water Act) and any other appropriate requirements of state and federal law. If DWQ determin that such standards or laws are not being met (including the failure to sustain a designated or achieved use or that state or federal law is being violated, or that further conditions are necessary to assure compliance, DWQ may reevaluate and modify this certification to include conditions appropriate to assure compliance wit such standards and requirements in accordance with 15 A NCAC 2H.0507(d). Before codifying the certification, DWQ shall notify the applicant and the US Army Corps of Engineers, provide public notice in accordance with 15A NCAC 2H.0503, and provide opportunity for public hearing in accordance with 15A NCAC 2H.0504. Any new or revised conditions shall be provided to the applicant in writing, shall be provided to the United States Army Corps of Engineers for reference in any permit issued pursuant to Section 404 of the Clean Water Act, and shall also become conditions of the 404 Permit for the project. If you do not accept any of the conditions of this certification, you may ask for an adjudicatory hearing. You must act within 60 days of the date that you receive this letter. To ask for a hearing, send a written petition that conforms to Chapter 1508 of the North Carolina General Statutes to the Office of Administrative Hearings, 6714 Mail Service Center, Raleigh, N.C. 27699-6714. This certification and its conditions are final and binding unless you ask for a hearing. This letter completes the review of the Division of Water Quality under Section 401 of the Clean Water Act. If you have any questions, please telephone Mr. Alan Johnson in the Mooresville Regional Office at 704-663- 1699 or Ms. Cyndi Karoly in the Central Office in Raleigh 919-733-9721. Sincerely, t J/ for Alan W. Klimek, P.E. Attachments cc: Army Corps of Engineers, Asheville Ian McMillan, Wetlands Unit Central Files File Copy Q[A fk?9 R odc?1 APR 4 - 2006 DENR - WATER QUALITY WETLANDS AND STOP WATER BRANCH Triage Check List Date: 3/22/06 Project Name: COCharlotte 2103 Vernon Drive DWQ#: 06-0451 County: Mecklenburg Alan Johnson, Mooresville Regional Office To: 60-day Processing Time: 3/16/06 - 5/14/06 From: Cyndi Karoly Telephone : (919) 733-9721 The file attached is being forwarded to you for your evaluation. Please call if you need assistance. ? Stream length impacted ? Stream determination Wetland determination and distance to blue-line surface waters on USFW topo maps ? Minimization/avoidance issues ? Buffer Rules (Meuse, Tar-Pamlico, Catawba, Randleman) ? Pond fill Mitigation Ratios ? Ditching ? Are the stream and or wetland mitigation sites available and viable? ? Check drawings for accuracy ? Is the application consistent with pre-application meetings? ? Cumulative impact concern Comments: As per our discussion regarding revision of the triage and delegation processes, please review the attached file. Note that you are the first reviewer, so this file will need to be reviewed for administrative as well as technical details. If you elect to place this project on hold, please ask the applicant to provide your requested information to both the Central Office in Raleigh as well as the Asheville Regional Office. As we discussed, this is an experimental, interim procedure as we slowly transition to electronic applications. Please apprise me of any complications you encounter, whether related to workload, processing times, or lack of a "second reviewer" as the triage process in Central had previously provided. Also, if you think of ways to improve this process, especially so that we can plan for the electronic applications, let me know. Thanks! PRE-CONSTRUCTION NOTIFICATION PURSUANT TO NATIONWIDE PERMIT NO. 13 2103 VERNON DRIVE CHARLOTTE, MECKLENBURG COUNTY, NORTH CAROLINA ESI Project No. ET04006.29 March 10, 2006 (r.r For CHARLOTTE STORM WATER SERVICES 600 East Fourth Street Charlotte, NC 28202 704- 432-0966 lgggowg§ MAR 1 6 2006 w=0 616WAM *q" BY ENVIRONMENTAL SERVICES, INC. 9600-G Southern Pine Boulevard Charlotte, NC 28273 704-523-7225 www.esinc.cc Table of Contents Executive Summary----------- ------------------------------- Existing Conditions -------------------------------------------- Current Land Use ------------------------------- Jurisdictional Determination ------------------------- Agency Correspondence ------------------------------------ Cultural Resources Protected Species-------------------------------------------- Purpose and Need for the Project---------------------- Avoidance and Minimization ---------------------------- Proposed Impacts to Jurisdictional Waters------ Compensatory Mitigation---------------------------------- References ----------------------------------------------------------------------------.1 ----------------------------------------------------------------------------? 2 ------------------------------- ------------------------------------------ 3 ----------------------------------------------------------------------------3 ------------------------- --------------------------------------------3 -------------------------------- ----- 3 4 ------------------------------------- --------------------------------------4 --------------------------------------------------------------------------- 4 --------------------------------------------------------------------------- 5 List of Attachments Attachment A - Figure 1. USGS Site Location Map Attachment A - Figure 2a. Soil Survey of Mecklenburg County (SSURGO database) Attachment A - Figure 2b. Soil Survey of Mecklenburg County (SSURGO database) aerial photo base Attachment A - Figure 3. Jurisdictional Boundary Field Map Attachment B - Request for Jurisdictional Determination Form Attachment C - Pre-Construction Notification Application - Nationwide Permit No. 13 Attachment D - Routine On-Site Data Form Attachment E - Stream Classification Forms Attachment F - Representative Photographs Attachment G - Proposed Impacts ii Executive Summary The 2103 Vernon Drive project is located in Charlotte near Providence Road, approximately one- quarter of a mile north of its intersection with Wendover Road in Mecklenburg County, North Carolina (Attachment A - Figures 1, 2a and 2b). The purpose of this project is to stabilize the bank and channel of an unnamed tributary (UT) to Briar Creek in order to prevent further stream bank erosion. The left bank of the UT to Briar Creek, located approximately 200 feet downstream from the outlet of a culvert under Chadsford Place, will be reinforced with a gabion wall and associated rip-rap along the base and around the ends of the wall, for a length of approximately 70 linear feet (If). ESI has been contracted by Charlotte Storm Water Services (CSWS) to provide permitting services for this project. The results of the on-site field investigation conducted by Environmental Services, Inc. (ESI) indicate that there is one jurisdictional stream channel within the project limits, a UT_ to Briar Creek, located northeast of 2103 Vernon Drive and transecting the site in a westerly direction (Attachment A - Figure 3). Impacts resulting from this activity will total approximately 70 if of bank and channel stabilization with a gabion wall and associated rip-rap along the base and around the ends of the wall. On behalf of CSWS, ESI is submitting a Pre-Construction Notification application in accordance with Nationwide Permit (NWP) Number 13 (Attachment Q. Existing Conditions The 2103 Vernon Drive project is located in Charlotte near Providence Road, approximately one- quarter of a mile north of its intersection with Wendover Road in Mecklenburg County, North Carolina (Attachment A - Figures 1, 2a and 2b). The UT to Briar Creek consists of a deeply entrenched, west flowing channel located directly northeast of 2103 Vernon Drive. The channel has become unstable, eroding into the stream bank and threatening the adjacent residential structures. The purpose of this project is to stabilize the bank and channel of a UT to Briar Creek in order to prevent further stream bank erosion. The left bank of the UT to Briar Creek, located approximately 200 feet downstream from the outlet of a culvert under Chadsford Place, will be reinforced with a gabion wall and associated rip-rap along the base and around the ends of the wall, for a length of approximately 70 If. ESI has been contracted by CSWS to provide permitting services for this project. Current Land Use The project study area and surrounding vicinity consists primarily of residential land use. Dominant vegetation includes scarlet oak (Quercus coccinea), white oak (Quercus alba), American beech (Fagus grandifolia), eastern red cedar (Juniperus virginiana), southern magnolia (Magnolia grandiflora), wild onion (Allium canadense), greenbrier (Smilax rotundifolia), and English ivy (Hedera helix). According to the Soil Survey Geographic (SSURGO) Database for Mecklenburg County, on-site soils consist of Mecklenburg fine sandy loam (MeD) (Attachment A - Figures 2a and 2b). This soil type is well drained and exhibits slow permeability and moderate shrink-swell potential. Jurisdictional Determination On January 10, 2006, ESI's Jeff Benton and Donald Hendrix reviewed the on-site jurisdictional waters of the U.S., as defined by the U.S. Army Corps of Engineers (USACE), utilizing the Routine On-Site Determination Method. This method is defined in the 1987 Corps of Engineers Wetlands Delineation Manual (Environmental Laboratory 1987). Based on this approach, there are no jurisdictional wetland areas within the project study area. A Routine On-Site Data Form representative of on-site non jurisdictional upland areas has been included as Attachment D. Jurisdictional waters of the U.S. were classified according to recent North Carolina Division of Water Quality (NCDWQ) and USACE guidance. The results of the on-site field investigation indicate that there is one jurisdictional stream channel within the project limits, UT to Briar Creek, located northeast of 2103 Vernon Drive (Attachment A - Figure 3). NCDWQ Stream Classification Forms and USACE Stream Quality Assessment Worksheets representative of the UT to Briar Creek have been included as Attachment E. Briar Creek is part of the Catawba River basin (HUC 03050103) (NCDWQ 03-08-34), is classified as "Class C" waters by the NCDWQ (NCDWQ 2004a), and is not included on the North Carolina 303(d) Impaired Waters List (NCDWQ 2004b). ESI is requesting written verification of the jurisdictional determination of the UT to Briar Creek (Attachment B). 2 The jurisdictional stream (UT to Briar Creek) consists of a deeply entrenched channel located northeast of 2103 Vernon Drive. The stream enters the site from the east and flows to the west towards Briar Creek. At a point approximately 20 feet downstream from a large step-pool feature west of Chadsford Place, the UT to Briar Creek scored a 38.5 out of a possible 71 points on the NCDWQ Stream Classification Form (Attachment B). A score of 19 is needed for the stream to be considered at least intermittent in nature, and a score of 30 is needed for the stream to be considered perennial in nature. At this same point, the UT to Briar Creek scored a 56 out of a possible 100 points on the USACE Stream Quality Assessment Worksheet (Attachment B). This worksheet was developed by the USACE as a guide for determining whether a jurisdictional stream would be considered important or unimportant using criteria such as flow, channel structure, aquatic habitat, and aquatic life. The scores derived from these forms indicate that the feature present is an important, perennial stream. At a point approximately 10 feet upstream from a large step-pool feature west of Chadsford Place, the UT to Briar Creek scored a 30.5 out of a possible 71 points on the NCDWQ Stream Classification Form, and a 50 out of a possible 100 points on the USACE Stream Quality Assessment Worksheet, indicating that the feature remains important, perennial stream for the entire length of the project study area (Attachment B). Representative photographs depicting the stream and on-site conditions are included as Attachment F. Agency Correspondence Cultural Resources ESI personnel visited the State Historic Preservation Office (SHPO) on January 13, 2006, to review the archaeological site files in order to determine the presence of any areas of architectural, historic, or archaeological significance that would be affected by the project. No recorded archaeological sites or National Register listed properties are located within 0.5-mile of the project study area. Protected Species ESI personnel visited the North Carolina Natural Heritage Program (NCNHP) offices on January 10, 2006 to determine the presence of any federally-listed species or designated critical habitat located within the project vicinity. Based on the review of NCNHP records, no federally listed species are located within 3 miles of the project study area. No designated critical habitat is located within 3 miles of the project study area Purpose and Need for the Project The purpose of this project is to stabilize the bank and channel of a UT to Briar Creek in order to prevent further stream bank erosion. The left bank of the UT to Briar Creek, located approximately 200 feet downstream from the outlet of a culvert under Chadsford Place, will be reinforced with a gabion wall and associated rip-rap along the base and around the ends of the wall, for a length of approximately 70 If. These activities are being performed in order to adequately convey storm water flows and prevent further channel erosion. Without performing the proposed work, the UT to Briar Creek will continue to erode into the stream bank, threatening the adjacent residential structures and adding to the sediment load of downstream waters. 3 Avoidance and Minimization Impacts to on-site jurisdictional waters have been minimized to the maximum extent practicable. Several bio-engineering and geotechnical techniques were considered in the conceptual design phase of this project. Given the constraints of the structure, embankment height, stream bed type, and stream elevation drop, design options were somewhat limited. A gabion system was selected due to the working room between the at risk structure and stream bed (Attachment F - Photo Plate 2). Stabilizing the bank and channel with only the necessary length of gabion wall will act to prevent major bank failures and downstream sedimentation, thus protecting the adjacent residential structures while increasing the water quality of the stream. Proposed Impacts to Jurisdictional Waters Proposed impacts include: ±70 linear feet of bank and channel stabilization with a gabion wall and associated class two rip-rap along the base and around the ends of the wall. In addition, due to existing on-site conditions, it will be necessary for heavy equipment to be temporarily located in the stream bed. Given that the stream is bedrock controlled, impacts resulting from this activity should be minimal. On behalf of CSWS, ESI is submitting a Pre-Construction Notification application with attachments in accordance with NWP 13 (Attachment Q. Table 1. Summary of Proposed Impacts Impacts Jurisdictional Area Activity under NWP No. 13 Install gabion wall with rip- UT to Briar Creek rap along base to left bank ±701f and channel Total ±701f Compensatory Mitigation The proposed design of this project is intended to prevent bank erosion and channel incision of the UT to Briar Creek, thereby reducing sedimentation and improving water quality downstream. Given these improvements, in addition to the limited nature of the proposed impacts, no mitigation is currently being proposed for this project. 4 REFERENCES Environmental Laboratory. 1987. US Army Corps of Engineers Wetlands Delineation Manual, Technical Report Y-87-1, US Army Engineer Waterways Experiment Station, Vicksburg, Mississippi. NC Division of Water Quality (NC DWQ). 2004a. Basinwide Information Management System (BIMS): Stream Classification. September 2004. http://h2o.enr.state.nc.us/bims/reports/basinsand waterbodies/hydroCatawba.pdf . Downloaded January 2006. NC Division of Water Quality (NCDWQ). 2004b. 303(d) List. http://h2o.enr.state.ne.us/ tmdl/documents/2004IRCategories4-7.pdf. Downloaded January 2006. US Geological Survey. 1974. Hydrologic Unit Map, State of North Carolina Gaging St8 y? +?r ?? ?F o?4Q Q /l \ t. u y LotFavt3 -x?Y? (6 Col titry r lub? .? ?'. ? •f, `,Y ? `?\J? ? %? 1! y?4? ? ?? `??`, .\?i ',? ??,? ??,- ?1 ?; ' f 7( ?l R.?;: r4 ! A t ?'s? kw,4 ?- :_ $?1?? X11 ''? ?? `??1%- ,,A• u'1 p_. I y +HrE ?Isl" f. igtr I ?t ? , Fv, ? \ E\ ? :1?-O?0f1rY' F? ?Y'P? 67? -$SO U? per` I A ?Q??ti r?\ ??°. ?f 9 acv' Pa0\\ \ -11 } A 1\ ` ti3BS F 654 N@?I - - ?' i l I i? ?? /, ?7 a¢ (/4-.? t? •~/ ?..??n`r \ Y\C r 1. \il ??Xn _' )?? at ?? ?7,`-`?j1??..? t•". +r`'f ?.•_ _ i ?:=1„ "` '445(} ?I' 1? /v / I Yt' ?\Q l S '?? ) /- rl a4 "S`l J? p[h' cit J ? ? r- ?F? y?%?? f '' q , 1 l?l NNYATE xJLti? + + I r?r O? 0 1,000 2.000 49 Feel / 1 a l 1 inch equals 2,000 feet Sources: Source NCDOT GIS 1:24K County Digital Raster Graphics% rzx'" ? _. GCS: NC State Plane NAD83, FIPS 3200 o represented on this map was derived r'S`° i' - •? v s III `` I FI Disclaimer. Informarn from secondary data sources and is to be used for general 1 I l r! tl, `I \>t \\I planning purposes only. No warranties or representations of accuracy are expressed or implied. ENVIRONMENTAL Project: ET04006.29 SERVICES, INC. Project Location Map 9660-G Southern Pine Blvd. 2103 Vernon Drive Date: Mar 2006 Charlotte, NC 28273 (704)523-7225 Drwn/Chkd: MCS/JB (704)523-7226 FAX Mecklenburg County, North Carolina -rvironmentalservices.com Figure: 1 S:\Projects\2004\ET04006\029Vigl.mxd, 03/08/2006, 5:00 pm I -I - CuD 6 ° D ' CeB2 r - r. WkB WkD CeD2 ? - _. - Fr ? f r Ur s • ," . CeB2 - ° - - CUB; HeB / MO MkB CUB MS CUD •o o - - rrr EnD HUB . - ° MkBr Mks 2103 Vernon Drive o w EnD- MO `Mks ° HeB °?? Cub SOIIS CUD Mr L) DSL_NAME, FULLNAME APB, Appling sandy loam ApD, Appling sandy loam r CeB2, Cecil sandy clay loam O Mks CeD2, Cecil sandy clay loam CUB, Cecil-Urban land complex o - CUD, Cecil-Urban land complex a DaB, Davidson sandy clay loam - Da D, Davidson sandy clay loam DaE, Davidson sandy clay loam EnB, Enon sandy loam • 4 EnD, Enon sandy loam • ° GeB2. Georgeville slaty silt loam HuB GeD2, Georgeville slaty silt loam uD - GOB, Goldston silty clay loam • ti ` GoD, Goldston silty clay loam HeB, Helena sandy loam HUB, Helena-Urban land complex 6 CUB ° r IrA, Iredell fine sandy loam _ IrB, Iredell fine sandy loam IUB, Iredell-Urban land complex • • LgB, Lignum gravelly silt loam ?• MO, Monacan soils MS, Monacan soils and Arents MeB, Mecklenburg fine sandy loam Project Location • L. MeD, Mecklenburg fine sandy loam ,.1 b ! MkB, Mecklenburg-Urban land complex Roads P83, Pacolet-Udorthents complex PaE, Pacolet sandy loam Pal', Pacolet sandy loam Streams •• Pt, Pits 0 500 1,000 < UL, Udorthents, loamy T? UO, Udorthents, sanitary landfill Jr, Urban land Feet VaB, Vance sandy loam 1 inch equals 1,000 feet- VaD. Vance sandy loam f" . WkB, Wilkes loam Sources: NRCS Soil Survey. {h Ht6 WkD, Wilkes loam GCS: NC State Plane NAD83, FIPS 3200 - O ° WkE, Wilkes loam Disclaimer: Information represented on this map was dewed WkF, Wilkes loam from secondary data sources and is to be used for general planning purposes only. No warrantee or representations of WuD, Wilkes-Urban land complex accuracy are expressed or implied. ` CuB \ w• Water ENVIRONMENTAL Project: ET04006.29 SERVICES, INC. NRCS SOII Survey %60-G Southern Pine Blvd. 2103 Vernon Drive Date: Mar 2006 Charlotte, NC 28273 c7041523-7225 Drwn/Chkd: MCS/JB 704,523-7226FAx Mecklenburg County, North Carolina www. environmentalsomces.com Figure: 2a S:\Proiects\2004\ET04006\029Uig2a.mxd, 03108/2006, 5:00 pm t? y 4 ? - f CUB Al; g, 13 Wyk ?,7 S:1Projects\2004\ET04006\029\fig2b.m:d, 03/08/2006, 5:00 pm Note: Jurisdictional waters of the US were investigated by Envnonmenlal Services, Inc. (ESI), on 10 January 2006. Jursidictional areas have not been delineated nor verged by the US Army Corps of Engineers. i Existing Stream Channel 131 1 E Photo Documentation Point SC points JD point ® Project Parcel Parcels [- Buildings -••- Streams - Roads 0 16.5 33 Feet 1 inch equals 33 feet Sources: GIS Layers provided by Mecklenburg County Land Use and Environmental Services, Inc. (2006) GCS: NC Slate Plane NAD83, FIPS 3200 Disclaimer: Information represented on this map was derived from secondary data sources and is to be used for general planning purposes only. No warranties or representations of accuracy are expressed or implied. A JD &?4 ..1 -? SC2 - 2 i i 2103 Vernon Dr. t 1 2109 Vernon Dr. ENVIRONMENTAL Project: ET04006.29 SERVICES, INC. Approximate Jurisdictional Boundary Field Map Date: Mar 9660-GSouthem Pine Blvd. Chadotte NC 28273 2103 Vernon Drive 2006 , (704)523-7225 County, North Carolina Drwn/Chkd: MCS/JB *-;- (704) 523-7226 FAX Mecklenburg Figure: 3 C \Prnier -n-cTnbrlrla\n9oWin1 -d n3/n6/20n6 5 00 nm REQUEST FOR JURISDICTIONAL DETERMINATION DATE: March 10, 2006 COUNTY Mecklenburg County, NC TOTAL ACREAGE OF TRACT < 1 acre PROJECT NAME (if applicable) 2103 Vernon Drive PROPERTY OWNER/APPLICANT (name, address and phone): Charlotte Storm Water Services POC: Mr. Isaac Hinson at (704) 336-4495 600 East Fourth Street Charlotte, North Carolina 28202 NAME OF CONSULTANT, ENGINEER, DEVELOPER (if applicable): Environmental Services Inc. POC: Mr. Paul Petitgout at (704) 523-7225 9600-G Southern Pine Boulevard Charlotte, North Carolina 28273 STATUS OF PROJECT (check one): ( ) On-going site work for development purposes (X) Project in planning stages (Type of project: NWP 13) ( ) No specific development planned at present ( ) Project already completed ADDITIONAL INFORMATION REQUIRED: Check items submitted - forward as much information as is available. At a minimum, the following first two items must be forwarded. (X) USGS Site Location Map (Attachment A - Figure 1) (X) NRCS Soil Survey (Attachment A - Figures 2a and 2b) (X) Approximate Jurisdictional Boundary Field Map (Attachment A - Figure 3) (X) Pre-Construction Notification Application (Attachment C) (X) Routine On-Site Data Form (Attachment D) (X) Steam Classification Forms (Attachment E) (X) Representative Photographs (Attachment F) (X) Agency Correspondence (Report) (X) Proposed Impacts (Attachment G) Signature of Prope Owner or Authorized Agent Mr. Isaac Hinson p@50WIMP MAR 1 6 2006 Office Use Only: Form Version May 2002 2!",080451 .J USACE Action ID No. DWQ No. (If any particular item is not applicable to this project, please enter "Not Applicable" or "N/A".) 1. Processing 1. Check all of the approval(s) requested for this project: ? Section 404 Permit ? Riparian or Watershed Buffer Rules ? Section 10 Permit ? Isolated Wetland Permit from DWQ ® 401 Water Quality Certification 2. Nationwide, Regional or General Permit Number(s) Requested: Nationwide Permit No. 13 3. If this notification is solely a courtesy copy because written approval for the 401 Certification is not required, check here: ? 4. If payment into the North Carolina Wetlands Restoration Program (NCWRP) is proposed for mitigation of impacts (verify availability with NCWRP prior to submittal of PCN), complete section VIII and check here: ? 5. If your project is located in any of North Carolina's twenty coastal counties (listed on page 4), and the project is within a North Carolina Division of Coastal Management Area of Environmental Concern (see the top of page 2 for further details), check here: ? II. Applicant Information 1. Owner/Applicant Information Name: City of Charlotte Storm Water Services, Contact Isaac Hinson Mailing Address: 600 East Fourth Street Charlotte NC 28202 Telephone Number: (704) 336-4495 Fax Number: (704) 336-6586 E-mail Address: ihinsongci.charlotte.nc.us 2. Agent/Consultant Information (A signed and dated copy of the Agent Authorization letter must be attached if the Agent has signatory authority for the owner/applicant.) Name: Company Affiliation: Mailing Address: Telephone Number: Fax Number: E-mail Address: III. Project Information Attach a vicinity map clearly showing the location of the property with respect to local landmarks such as towns, rivers, and roads. Also provide a detailed site plan showing property boundaries and development plans in relation to surrounding properties. Both the vicinity map and site plan must include a scale and north arrow. The specific footprints of all buildings, impervious surfaces, or other facilities must be included. If possible, the maps and plans should include the appropriate USGS Topographic Quad Map and NRCS Soil Survey with the property boundaries outlined. Plan drawings, or other maps may be included at the applicant's discretion, so long as the property is clearly defined. For administrative and distribution purposes, the USACE requires information to be submitted on sheets no larger than 11 by 17-inch format; however, DWQ may accept paperwork of any size. DWQ prefers full-size construction drawings rather than a sequential sheet version of the full-size plans. If full-size plans. are reduced to a small scale such that the final version is illegible, the applicant will be informed that the project has been placed on hold until decipherable maps are provided. 1. Name of project: 2103 Vernon Drive 2. T.I.P. Project Number or State Project Number (NCDOT Only): N/A 3. Property Identification Number (Tax PIN): 18102181 4. Location County: Mecklenburg Nearest Town: Charlotte Subdivision name (include phase/lot number): N/A Directions to site (include road numbers, landmarks, etc.): From uptown Charlotte, head south on third street (HWY 16). Road will change names from third street to Providence Road. Continue on Providence Road for approximately 1.75 miles, then turn left onto Vernon Drive just after crossing Briar Creek. Travel approximately 0.25 mile, and project is located on the left at 2103 Vernon Drive. (Note - If project is linear, such as a road or utility line, attach a sheet that separately lists the coordinates for each crossing of a distinct waterbody.) 5. Property size (acres): < 1 acre residential parent parcel 6. Nearest body of water (stream/river/sound/ocean/lake): Briar Creek 7. River Basin: Catawba (HU# 03050103) NCDWO: 03-08-34)((SIN#: 11-137-8-2) (Note - this must be one of North Carolina's seventeen designated major river basins. The River Basin map is available at http://h2o.enr.state.nc.us/admin/mal) .) 8. Describe the existing conditions on the site and general land use in the vicinity of the project at the time of this application: The project study area consists of an unnamed tributary (UT) to Briar Creek. The project study area and surrounding vicinity consists primarilyoof residential land use. 9. Describe the overall project in detail, including the type of equipment to be used: The UT to Briar Creek consists of a deeply entrenched, west flowing channel located directly northeast of 2103 Vernon Drive. At a point approximately 200 feet downstream from the outlet of a culvert under Chadsford Place, the channel has become unstable, eroding into the stream bank and threatening the adjacent residential structures. Stabilization of the stream bank and channel are proposed to correct the channel incision and bank erosion. A trackhoe, in addition to other typical excavation equipment will be used for this project. 10. Explain the purpose of the proposed work: The purpose of this project is to stabilize the bank and channel of a UT to Briar Creek in order to prevent further stream bank erosion. Without performing the proposed work, UT to Briar Creek will continue to erode into the stream bank, threatening t?he adjacent residential structures and adding to the sediment load of downstream waters. IV. Prior Project History If jurisdictional determinations and/or permits have been requested and/or obtained for this project (including all prior phases of the same subdivision) in the past, please explain. Include the USACE Action ID Number, DWQ Project Number, application date, and date permits and certifications were issued or withdrawn. Provide photocopies of previously issued permits, certifications or other useful information. Describe previously approved wetland, stream and buffer impacts, along with associated mitigation (where applicable). If this is a NCDOT project, list and describe permits issued for prior segments of the same T.I.P. project, along with construction schedules. N/A V. Future Project Plans Are any future permit requests anticipated for this project? If so, describe the anticipated work, and provide justification for the exclusion of this work from the current application. There are no future plans for this area. VI. Proposed Impacts to Waters of the United States/Waters of the State It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to wetlands, open water, and stream channels associated with the project. The applicant must also provide justification for these impacts in Section VII below. All proposed impacts, permanent and temporary, must be listed herein, and must be clearly identifiable on an accompanying site plan. All wetlands.and waters, and all streams (intermittent and perennial) must be shown on a delineation map, whether or not impacts are proposed to these systems. Wetland and stream evaluation and delineation forms should be included as appropriate. Photographs may be included at the applicant's discretion. If this proposed impact is strictly for wetland or stream mitigation, list and describe the impact in Section VIII below. If additional space is needed for listing or description, please attach a separate sheet. 1 Provide a written description of the proposed impacts: Proposed impacts include: X70 linear feet of bank and channel stabilization with a gabion wall and associated class two rip-rap along the base and around the ends of the wall. In addition, due to existing on-site conditions, it will be necessary for heavy equipment to be temporarily located in the stream bed. Given that the stream is bedrock controlled, impacts resulting from this activity should be minimal. 2. Individually list wetland impacts below: Wetland Impact Area of Located within Distance to Site Number Type of Impact* Impact 100-year Floodplain** Nearest Stream Type of Wetland*** (indicate on ma) (acres) (yes/no) (linear feet) N/A * List each impact separately and identify temporary impacts. Impacts include, but are not limited to: mechanized clearing, grading, fill, excavation, flooding, ditching/drainage, etc. For dams, separately list impacts due to both structure and flooding. ** 100-Year floodplains are identified through the Federal Emergency Management Agency's (FEMA) Flood Insurance Rate Maps (FIRM), or FEMA-approved local floodplain maps. Maps are available through the FEMA Map Service Center at 1-800-358-9616, or online at http://www.fema.gov. *** List a wetland type that best describes wetland to be impacted (e.g., freshwater/saltwater marsh, forested wetland, beaver pond, Carolina Bay, bog, etc.) Indicate if wetland is isolated (determination of isolation to be made by USACE only). List the total acreage (estimated) of all existing wetlands on the property: N/A Total area of wetland impact proposed: N/A 3. Individually list all intermittent and perennial stream impacts below: Stream Impact Length of Average Width Perennial or Site Number Type of Impact* Impact Stream Name** of Stream Intermittent? (indicate on ma) (linear feet) Before Im act specify) Install gabion Site 1 wall with rip-rap ±70 if UT to Briar Creek ±15 feet Perennial along base to left bank and channel * List each impact separately and identify temporary impacts. Impacts include, but are not limited to: culverts and associated rip-rap, dams (separately list impacts due to both structure and flooding), relocation (include linear feet before and after, and net loss/gain), stabilization activities (cement wall, rip-rap, crib wall, gabions, etc.), excavation, ditching/straightening, etc. If stream relocation is proposed, plans and profiles showing the linear footprint for both the original and relocated streams must be included. ** Stream names can be found on USGS topographic maps. If a stream has no name, list as UT (unnamed tributary) to the nearest downstream named stream into which it flows. USGS maps are available through the USGS at 1-800-358-9616, or online at www.uses.gov. Several intemet sites also allow direct download and printing of USGS maps (e.g., www.tol2ozone.com, www.mapquest.com, etc.). Cumulative impacts (linear distance in feet) to all streams on site: ±70 linear feet 4. Individually list all open water impacts (including lakes, ponds, estuaries, sounds, Atlantic Ocean and any other water of the U.S.) below: Open Water Impact Area of Name of Waterbody Type of Waterbody Site Number Type of Impact* Impact (if applicable) (lake, pond, estuary, sound, (indicate on ma) (acres) bay, ocean, etc.) N/A * List each impact separately and identify temporary impacts. Impacts include, but are not limited to: fill, excavation, dredging, flooding, drainage, bulkheads, etc. 5. Pond Creation If construction of a pond is proposed, associated wetland and stream impacts should be included above in the wetland and stream impact sections. Also, the proposed pond should be described here and illustrated on any maps included with this application. Pond to be created in (check all that apply): ? uplands ? stream ? wetlands Describe the method of construction (e.g., dam/embankment, excavation, installation of draw-down valve or spillway, etc.): N/A Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond, local stormwater requirement, etc.): N/A Size of watershed draining to pond: N/A Expected pond surface area: N/A VII. Impact Justification (Avoidance and Minimization) Specifically describe measures taken to avoid the proposed impacts. It may be useful to provide information related to site constraints such as topography, building ordinances, accessibility, and financial viability of the project. The applicant may attach drawings of alternative, lower-impact site layouts, and explain why these design options were not feasible. Also discuss how impacts were minimized once the desired site plan was developed. If applicable, discuss construction techniques to be followed during construction to reduce impacts. Impacts to on-site jurisdictional waters have been minimized to the maximum extent practicable. Several bio-engineering and geotechnical techniques were considered in the conceptual design phase of this project. Given the constraints of the structure, embankment height, stream bed type, and stream elevation drop, design options were somewhat limited. A abg ion system was selected due to the working room between the at risk structure and stream bed. Stabilizing the bank and channel with only the necessary length of gabion wall will act to prevent major bank failures and downstream sedimentation, thus protecting the adjacent residential structures while increasing the water quality of the stream. VIII. Mitigation 1. Provide a brief description of the proposed mitigation plan. The description should provide as much information as possible, including, but not limited to: site location (attach directions and/or map, if offsite), affected stream and river basin, type and amount (acreage/linear feet) of mitigation proposed (restoration, enhancement, creation, or preservation), a plan view, preservation mechanism (e.g., deed restrictions, conservation easement, etc.), and a description of the current site conditions and proposed method of construction. Please attach a separate sheet if more space is needed. The proposed design of this project is intended to prevent bank erosion and channel incision of the UT to Briar Creek, thereby reducing sedimentation and improving water quality downstream. Given these improvements, in addition to the limited nature of the proposed impacts, no mitigation is currently being proposed for this project. 2. Mitigation may also be made by payment into the North Carolina Wetlands Restoration Program (NCWRP). Please note it is the applicant's responsibility to contact the NCWRP at (919) 733-5208 to determine availability and to request written approval of mitigation prior to submittal of a PCN. For additional information regarding the application process for the NCWRP, check the NCWRP website at http://h2o.enr.state.nc.us/wip/index.htm. If use of the NCWRP is proposed, please check the appropriate box on page three and provide the following information: Amount of stream mitigation requested (linear feet): N/A Amount of buffer mitigation requested (square feet): N/A Amount of Riparian wetland mitigation requested (acres): N/A Amount of Non-riparian wetland mitigation requested (acres): N/A Amount of Coastal wetland mitigation requested (acres): N/A IX. Environmental Documentation (required by DWQ) Does the project involve an expenditure of public (federal/state) funds or the use of public (federal/state) land? Yes ® No ? If yes, does the project require preparation of an environmental document pursuant to the requirements of the National or North Carolina Environmental Policy Act (NEPA/SEPA)? Note: If you are not sure whether a NEPA/SEPA document is required, call the SEPA coordinator at (919) 733-5083 to review current thresholds for environmental documentation. Yes ? No If yes, has the document review been finalized by the State Clearinghouse? If so, please attach a copy of the NEPA or SEPA final approval letter. Yes ? No X. Proposed Impacts on Riparian and Watershed Buffers (required by DWQ) It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to required state and local buffers associated with the project. The applicant must also provide justification for these impacts in Section VII above. All proposed impacts must be listed herein, and must be clearly identifiable on the accompanying site plan. All buffers must be shown on a map, whether or not impacts are proposed to the buffers. Correspondence from the DWQ Regional Office may be included as appropriate. Photographs may also be included at the applicant's discretion. Will the project impact protected riparian buffers identified within 15A NCAC 2B .0233 (Meuse), 15A NCAC 2B .0259 (Tar-Pamlico), 15A NCAC 2B .0250 (Randleman Rules and Water Supply Buffer Requirements), or other (please identify )? Yes ? No ® If you answered "yes", provide the following information: Identify the square feet and acreage of impact to each zone of the riparian buffers. If buffer mitigation is required calculate the required amount of mitigation by applying the buffer multipliers. N/A Zone* Impact (square feet) Multiplier Required Mitigation 1 N/A 3 N/A 2 N/A 1.5 N/A Total N/A N/A * Zone 1 extends out 30 feet perpendicular from near bank of channel; Zone 2 extends an additional 20 feet from the edge of Zone 1. If buffer mitigation is required, please discuss what type of mitigation is proposed (i.e., Donation of Property, Conservation Easement, Riparian Buffer Restoration / Enhancement, Preservation or Payment into the Riparian Buffer Restoration Fund). Please attach all appropriate information as identified within 15A NCAC 2B .0242 or .0260. N/A XI. Stormwater (required by DWQ) Describe impervious acreage (both existing and proposed) versus total acreage on the site. Discuss stormwater controls proposed in order to protect surface waters and wetlands downstream from the property. Sources of nearbv impervious cover include roads. driveways, and rooftops. This proiect will not cause an increase in the impervious coverage of the project area. XII. Sewage Disposal (required by DWQ) Clearly detail the ultimate treatment methods and disposition (non-discharge or discharge) of wastewater generated from the proposed project, or available capacity of the subject facility. N/A XIII. Violations (required by DWQ) Is this site in violation of DWQ Wetland Rules (15A NCAC 2H .0500) or any Buffer Rules? Yes ? No Is this an after-the-fact permit application? Yes ? No XIV. Other Circumstances (Optional): It is the applicant's responsibility to submit the application sufficiently in advance of desired construction dates to allow processing time for these permits. However, an applicant may choose to list constraints associated with construction or sequencing that may impose limits on work schedules (e.g., draw-down schedules for lakes, dates associated with Endangered and Threatened Species, accessibility problems, or other issues outside of the applicant's control). Construction is scheduled to begin following the receipt of the appropriate permits. ,;? /lv (e Applic?ht/Agent's Signature Date (Agent's signature is valid only if an authorization letter from the applicant is provided.) DATA FORM ROUTINE WETLAND DETERMINATION (1987 COE Wetlands Delineation Manual) Project/Site: 2103 Vernon Drive Date: 1-10-06 Applicant/Owner: City of Charlotte Stormwater Services County: Mecklenburg Investigator: Environmental Services, Inc. State: NC Do normal circumstances exist on the site? F,-/] Y No Community ID: mixed hardwood/residential Is the site significantly disturbed (atypical situation)? ?Yes No Transect ID: n/a Is the area a potential problem area (If needed, explain)? Plot ID: upland ?Yes No VEGETATION DOMINANT STRATUM INDICATOR DOMINANT STRATUM INDICATOR PLANT SPECIES PLANT SPECIES 1. scarlet oak tree NI 7. southern magnolia shrub FAC+ Quercus coccinea Magnolia grandiflora 2. white oak tree FACU 8. wild onion herb FACU- Quercus alba Allium canadense 3. American elm tree FACW 9. greenbrier vine FAC Ulmus americana Smilax rotundifolia 4. American beech tree FACU 10. English ivy vine NI Fagus randifolia Hedera helix 5. American beech shrub FACU 11. poison ivy vine FAC Fagus grandifolia Toxicodendron radicans 6. eastern red cedar shrub FACU- 12. Juniperus virginiana Percent of dominant species that are OBL, FACW, or FAC (Excluding FAC-): 36% Fac Neutral Test: (includes FAC+ and wetter) Remarks The hydrophytic vegetation criterion has not been met. HYDROLOGY ? RECORDED DATA (DESCRIBE IN REMARKS): WETLAND HYDROLOGY INDICATORS Primary Indicators: ? Stream, Lake, or Tide Gauge ? Inundated ? Aerial Photographs ? Saturated in Upper 12 Inches ? Other ? Water Marks ? Drift Lines NO RECORDED DATA AVAILABLE ? Sediment Deposits ? Drainage Patterns in Wetlands FIELD OBSERVATIONS Secondary Indicators (2 or more required): ? Oxidized Root Channels in Upper 12 Inches Depth of Surface Water: 0" ? Water-Stained Leaves ? Local Soil Survey Data Depth to Free Water in Pit: >181, ? FAC-Neutral Test ? Other (Explain in Remarks) Depth to Saturated Soil: >12" Remarks: The hydrologic criterion has not been met. North Carolina Division of Water Quality - Stream Identification Form; Version 3.1 Date: 1/10/06 Project: 2103 Vernon Drive Latitude: 35° 10' 53"N Evaluator: ESI Site: UT to Briar Creek (Reach A) Longitude: 80° 48'54"W Total points: Streams are at least intermittent it County: Mecklenburg Other: Charlotte East, NC Quad eo - o o ?;?t if -Qn 38.5 A. Geomorphology subtotal = 20 Absent Weak Moderate Strong 1*. Continuous bed and bank 00 01 02 G 3 2. Sinuosity 00 01 0 2 03 3. In-channel structure: rife pool sequence 00 01 0 2 03 4. Soil texture or stream substrate sorting 00 01 02 G) 3 5. Active/relic floodplain 00 01 0 2 03 6. Depositional bars or benches 00 01 0 2 03 7. Braided channel 00 G) 1 02 03 8. Recent alluvial deposits 00 01 G) 2 03 9*. Natural levees 0 0 01 02 03 10. Headcuts G) 0 01 02 03 11. Grade controls 00 00.5 01 0 1.5 12. Natural valley and drainageway 00 00.5 01 (E) 1.5 13. Second or greater order channel on existing USGS or NRCS map or other documented evidence. No = 0 O Yes = 3 `Man-made ditches are not rated; see discussions in manual H_ Hvdireleav suhtatal = 10 14. Groundwater flow/discharge 00 01 G) 2 03 15. Water in channel and >48 hrs since rain, or Water in channel - dry or growing season 00 01 02 G 3 16. Leaflitter G) 1.5 0 1 C) 0.5 00 17. Sediment on plants 00 G 0.5 01 01.5 18. Organic debris lines or piles (wrack lines) 00 00.5 01 ID 1.5 19. Hydric soils (redoxomorphic features) present? 0 No = 0 0 Yes = 1.5 ('- _ Rininnv si thtntal = R .ri 20*. Fibrous roots in channel G) 3 02 01 00 21 *. Rooted plants in channel [) 3 02 01 00 22. Crayfish 0 00.5 01 . 0 1.5 23. Bivalves 00 (D 1 02 03 24. Fish (D 0 C) 0.5 01 01.5 25. Amphibians (D 0 00.5 01 01.5 26. Macrobenthos (note diversity and abundance) 00 G) 0.5 01 01.5 27. Filamentous algae; periphyton 00 00.5 G) 1 01.5 28. Iron oxidizing bacteria/fungus 0 0 00.5 01 O 1.5 29*. Wetland plants in streambed FAC 0 FACW 0 OBL 0 SAV Other 0.5 0.75 1.5 2.0 0 -items zo-z1 Locus on the presence or upland plants, item zv rocuses on me presence or aquatic or weuand piams Dotes: This evaluation was performed on a 20 ft. reach directly below a large step-pool feature (Reach A). North Carolina Division of Water Quality - Stream Identification Form; Version 3.1 Date: 1/10/06 Project: 2103 Vernon Drive Latitude: 35° 10'53"N l Evaluator: ESI Site: UT to Briar Creek (Reach B) Longitude: 80° 48'54"W Total points: Streams are at least intermittent if County: Mecklenburg Other: Charlotte East, NC Quad >=19 or perennial it >=30. 30.5 A. Geomorphology subtotal = 14.5 Absent Weak Moderate Strong 1*. Continuous bed and bank 00 01 02 (E} 3 2. Sinuosity 00 0 1 02 03 3: In-channel structure: riffle pool sequence 00 01 02 03 4. Soil texture or stream substrate sorting 00 01 0 2 03 5. Active/relic floodplain 00 01 2 03 6. Depositional bars or benches 00 (F) 1 02 03 7. Braided channel G 0 01 02 03 8. Recent alluvial deposits 00 01 0 2 03 9*. Natural levees G 0 01 02 03 10. Headcuts 00 01 02 03 11. Grade controls 00 00.5 0 1 01.5 12. Natural valley and drainageway 00 00.5 01 Q 1.5 13. Second or greater order channel on existing USGS or NRCS map or other documented evidence. No = 0 O Yes = 3 -man-mace ancnes are not ratea; see aiscussions in manual B_ Hvdrnlnnv suhtntal = R 14. Groundwater flow/discharge 00 1 C) 2 03 15. Water in channel and >48 hrs since rain, or Water in channel - dry or growing season 00 01 02 Cf 3 16. Leaflitter 01.5 (E) 1 00.5 00 17. Sediment on plants 00 0 0.5 01 01.5 18. Organic debris lines or piles (wrack lines) 00 00.5 0 1 01.5 19. Hydric soils (redoxomorphic features) present? O No = 0 0 Yes = 1.5 C_ Bioloav subtotal = 8 20*. Fibrous roots in channel E) 3 02 01 00 21*. Rooted plants in channel G 3 02 01 00 22. Crayfish 0 0 00.5 01 01.5 23. Bivalves 00 0 1 02 03 24. Fish 0 00.5 01 01.5 25. Amphibians 0 0 0 0.5 01 01.5 26. Macrobenthos (note diversity and abundance) 0 0 00.5 01 01.5 27. Filamentous algae; periphyton 00 00.5 0 1 , 0 1.5 28. Iron oxidizing bacteria/fungus (E) 0 00.5 01 01.5 29*. Wetland plants in streambed 0 FAC 0 FACW 0 OBL 0 SAV (E) Other 0.5 0.75 1.5 2.0 0 'Items 20-21 focus on the presence of upland plants, item 29 focuses on the presence of aquatic or wetland plants Notes: This evaluation was performed on a 20 ft. reach directly above a large step-pool feature (Reach B). USACE AID# DWQ # Site # (indicate on attached map) A STREAM QUALITY ASSESSMENT WORKSHEET Provide the following information for the stream reach under assessment: 1. Applicant's name: Charlotte Storm Water Services 2. Evaluator's name: Environmental Services Inc. 3. Date of evaluation: January 10, 2006 5. Name of stream: UT to Briar Creek 7. Approximate drainage area: 400 acres 9. Length of reach evaluated: 20 feet Reach A) 11. Site coordinates (if known): prefer in decimal degrees. 4. Time of evaluation: 2:00 pm 6. River basin: Catawba 8. Stream order: 0 10. County: Mecklenburg 12. Subdivision name (if any): N/A Latitude (ex. 34.872312): 35.1813°N Longitude (ex. -77.556611): 80.8149°W Method location determined (circle): GPS o o Shee Ortho (Aerial) Photo/GIS Other GIS Other: 13. Location of reach under evaluation (note nearby roads and landmarks and attach map identifying stream(s) location): From uptown Charlotte, head south on third street (H)A7Y 16). Road will change names from third street to Providence Road. Continue on Providence Road for approximately 1.75 miles, then turn left onto Vernon Drive just after crossing Briar Creek. Travel approximately 0.25 mile and project is located on the left at 2.103 Vernon Drive. 14. Proposed channel work (if any): 60 linear feet of bank stabilization. 15. Recent weather conditions: Little to no rainfall within last 48 hours. 16. Site conditions at time of visit: Channel deeply entrenched and incised into banks. 17. Identify any special waterway classifications known: Section 10 Tidal Waters Essential Fisheries Habitat Trout Waters Outstanding Resource Waters Nutrient Sensitive Waters Water Supply Watershed (I-IV) 18. Is there a pond or lake located upstream of the evaluation point? YES ? If yes, estimate the water surface area: N/A 19. Does channel appear on USGS quad map? ES NO 20. Does channel appear on USDA Soil Survey? YES ®O 21. Estimated watershed land use: 85 % Residential 10 % Commercial % Industrial % Agricultural % Forested % Cleared / Logged 5 % Other (institutional) 22. Bankfull width: 20' 23, Bank height (from bed to top of bank): 12' 24. Channel slope down center of stream: Flat (0 to 2%) Gentle (2 to 4%) Moderate (4 to 10%) 4 Steep (>10%) 25. Channel sinuosity: Straight 4 Occasional bends Frequent meander Very sinuous Braided channel Instructions for completion of worksheet (located on page 2): Begin by determining the most appropriate ecoregion based on location, terrain, vegetation, stream classification, etc. Every characteristic must be scored using the same ecoregion. Assign points to each characteristic within the range shown for the ecoregion. Page 3 provides a brief description of how to review the characteristics identified in the worksheet. Scores should reflect an overall assessment of the stream reach under evaluation. If a characteristic cannot be evaluated due to site or weather conditions, enter 0 in the scoring box and provide an explanation in the comment section. Where there are obvious changes in the character of a stream under review (e.g., the stream flows from a pasture into a forest), the stream may be divided into smaller reaches that display more continuity,. and a separate form used to evaluate each reach. The total score assigned to a stream reach must range between 0 and 100, with a score of 100 representing a stream of the highest quality. 'dotal Score (from reverse): 56 Comments: This evaluation was performed on an approximately 20' reach directly below a large step-pool feature (Reach A). Evaluator's Signature Date January 10, 2006 This channel evaluation form is intended to be used only as a guide to assist landowners and environmental professionals in gathering the data required by the United States Army Corps of Engineers to make a preliminary assessment of stream quality. The total score resulting from the completion of this form is subject to USACE approval and does not imply a particular mitigation ratio or requirement. Form subject to change - version 06/03. To Comment, please call 919-876-8441 x 26. STREAM QUALITY ASSESSMENT WORKSHEET # CHARACTERISTICS ECOREGION POINT RANGE SCORE Coastal Piedmont Mountain 1 Presence of flow / persistent pools in stream 0-5 0-4 0-5 3 (no flow or saturation = 0; strong flow = max points) 2 Evidence of past human alteration 0-6 0-5 0-5 4 (extensive alteration = 0; no alteration = max points) 3 Riparian zone 0-6 0-4 0-5 2 (no buffer = 0; contiguous, wide buffer = max points) 4 Evidence of nutrient or chemical discharges 0-5 0-4 0-4 3 (extensive discharges = 0; no discharges = max points) 5 Groundwater discharge 0-5 0-4 0-4 2 (no discharge = 0; springs, seeps, wetlands, etc. = max points) a 6 Presence of adjacent floodplain 0-4 0-4 0-2 3 (no floodplain = 0; extensive floodplain = max points) Entrenchment / floodplain access 0-5 0-4 0-2 0 (deeply entrenched = 0; frequent flooding = max points) 8 Presence of adjacent wetlands 0-6 0-4 0-2 0 (no wetlands = 0; large adjacent wetlands = max points) 9 Channel sinuosity 0-5 0-4 0-3 2 (extensive channelization = 0; natural meander = max points) 10 Sediment input 0-5 0-4 0-4 3 (extensive deposition= 0; little or no sediment = max points) 11 Size & diversity of channel bed substrate NA* 0-4 0-5 4 (fine, homogenous = 0; large, diverse sizes = max points) 12 Evidence of channel incision or widening 0-5 0-4 0-5 1 (deeply incised = 0; stable bed & banks = max points) 13 Presence of major bank failures 0-5 0-5 0-5 2 (severe erosion = 0; no erosion, stable banks = max points) 14 Root depth and density on banks 0-3 0-4 0-5 3 (no visible roots = 0; dense roots throughout = max points) 15 Impact by agriculture, livestock, or timber production 0-5 0-4 0-5 4 (substantial impact =0; no evidence = max points) 16 Presence of riffle-pool/ripple-pool complexes 0-3 0-5 0-6 4 (no riffles/ripples or pools = 0; well-developed = max points) Q 17 Habitat complexity 0-6 0-6 0-6 4 (little or no habitat = 0; frequent, varied habitats = max points) 18 Canopy coverage over streambed 0-5 0-5 0-5 4 (no shading vegetation = 0; continuous canopy = max points) 19 Substrate embeddedness NA* 0-4 0-4 4 (deeply embedded = 0; loose structure = max) 20 Presence of stream invertebrates (see page 4) 0-4 0-5 0-5 2 (no evidence = 0; common, numerous types = max points) 21 Presence of amphibians 0-4 0-4 0-4 0 O (no evidence = 0; common, numerous types = max points) C 22 Presence of fish 0-4 0-4 0-4 0 (no evidence = 0; common, numerous types = max points) 23 Evidence of wildlife use 0-6 0-5 0-5 2 (no evidence = 0; abundant evidence = max points) Total Points Possible 100 100 100 100 TOTAL SCORE (also enter on first page) 56 *These characteristics are not assessed in coastal streams USACE AID# DWQ # Site # (indicate on attached map) F923 STREAM QUALITY ASSESSMENT WORKSHEET Provide the following information for the stream reach under assessment: 1. Applicant's name: Charlotte Storm Water Services 2. Evaluator's name: Environmental Services Inc. 3. Date of evaluation: January 10, 2006 5. Name of stream: UT to Briar Creek 7. Approximate drainage area: 400 acres 9. Length of reach evaluated: 20 feet Reach B) 11. Site coordinates (if known): prefer in decimal degrees. 4. Time of evaluation: 2:15 pm 6. River basin: Catawba 8. Stream order: I" 10. County: Mecklenburg 12. Subdivision name (if any): N/A Latitude (ex. 34.872312): 35.1813°N Longitude (ex. -77.556611): 80.8149°W Method location determined (circle): GPS o o Shee Ortho (Aerial) Photo/GIS Other GIS Other: 13. Location of reach under evaluation (note nearby roads and landmarks and attach map identifying stream(s) location): From uptown Charlotte, head south on third street (HWY 16). Road will change names from third street to Providence Road. Continue on Providence Road for approximately 1.75 miles, then turn left onto Vernon Drive just after crossing Briar Creek. Travel approximately 0.25 mile, and project is located on the left at 2103 Vernon Drive. 14. Proposed channel work (if any): 60 linear feet of bank stabilization. 15. Recent weather conditions: Little to no rainfall within last 48 hours. 16. Site conditions at time of visit: Channel deeply entrenched and incised into banks. 17. Identify any special waterway classifications known: Section 10 Tidal Waters Essential Fisheries Habitat Trout Waters Outstanding Resource Waters Nutrient Sensitive Waters Water Supply Watershed (I-IV) 18. Is there a pond or lake located upstream of the evaluation point? YES 0 If yes, estimate the water surface area: N/A 19. Does channel appear on USGS quad map? S NO 20. Does channel appear on USDA Soil Survey? YES 21. Estimated watershed land use: 85 % Residential 10 % Commercial % Industrial % Agricultural % Forested % Cleared / Logged 5 % Other (institutional) 22. Bankfull width: 10' 23. Bank height (from bed to top of bank): 10' 24. Channel slope down center of stream: Flat (0 to 2%) Gentle (2 to 4%) Moderate (4 to 10%) ? Steep (>10%) 25. Channel sinuosity: Straight Occasional bends Frequent meander Very sinuous Braided channel Instructions for completion of worksheet (located on page 2): Begin by determining the most appropriate ecoregion based on location, terrain, vegetation, stream classification, etc. Every characteristic must be scored using the same ecoregion. Assign points to each characteristic within the range shown for the ecoregion. Page 3 provides a brief description of how to review the characteristics identified in the worksheet. Scores should reflect an overall assessment of the stream reach under evaluation. If a characteristic cannot be evaluated due to site or weather conditions, enter 0 in the. scoring box and provide an explanation in the comment section. Where there are obvious changes in the character of a stream under review (e.g., the stream flows from a pasture into a forest), the stream may be divided into smaller reaches that display more continuity, and a separate form used to evaluate each reach. The total score assigned to a stream reach must range between 0 and 100, with a score of 100 representing a stream of the highest quality. Total Score (from reverse): 50 Comments: This evaluation was performed on an approximately 20' reach directly above a large step-pool feature (Reach B). Evaluator's Signature Date January 10, 2006 This channel evaluation form is intended to be used only as a guide to assist landowners and environmental professionals in gathering the data required by the United States Army Corps of Engineers to make a preliminary assessment of stream quality. The total score resulting from the completion of this form is subject to USACE approval and does not imply a particular mitigation ratio or requirement. Form subject to change - version 06/03. To Comment, please call 919-876-8441 x 26. STREAM QUALITY ASSESSMENT WORKSHEET # CHARACTERISTICS ECOREGION POINT RANGE SCORE Coastal Piedmont Mountain 1 Presence of flow / persistent pools in stream 0-5 0-4 0-5 2 (no flow or saturation = 0; strong flow = max points) 2 Evidence of past human alteration 0-6 0-5 0-5 3 (extensive alteration = 0; no alteration = max points) 3 Riparian zone 0-6 0-4 0-5 2 (no buffer = 0; contiguous, wide buffer = max points) 4 Evidence of nutrient or chemical discharges 0-5 0-4 0-4 3 (extensive discharges = 0; no discharges = max points) 5 Groundwater discharge 0-5 0-4 0-4 1 (no discharge = 0; springs, seeps, wetlands, etc. = max points) a 6 Presence of adjacent floodplain 0-4 0-4 0-2 3 (no floodplain = 0; extensive floodplain = max points) F Entrenchment / floodplain access 0-5 0-4 0-2 0 (deeply entrenched = 0; frequent flooding = max points) 8 Presence of adjacent wetlands 0-6 0-4 0-2 0 (no wetlands = 0; large adjacent wetlands = max points) 9 Channel sinuosity 0-5 0-4 0-3 2 (extensive channelization = 0; natural meander = max points) 10 Sediment input 0-5 0-4 0-4 2 (extensive deposition= 0; little or no sediment = max points) 11 Size & diversity of channel bed substrate NA* 0-4 0-5 3 (fine, homogenous = 0; large, diverse sizes = max points) 12 Evidence of channel incision or widening 0-5 0-4 0-5 2 (deeply incised = 0; stable bed & banks = max points) 13 Presence of major bank failures (severe erosion = 0; no erosion, 0-5 0-5 0-5 3 stable banks = max points) 14 Root depth and density on banks 0-3 0-4 0-5 3 (no visible roots = 0; dense roots throughout = max points) 15 Impact by agriculture, livestock, or timber production 0-5 0-4 0-5 4 (substantial impact =0; no evidence = max points) 16 Presence of riffle-pool/ripple-pool complexes 0-3 0-5 0-6 3 (no riffles/ripples or pools = 0; well-developed = max points) 1 Habitat complexity 0-6 0-6 0-6 3 (little or no habitat = 0; frequent, varied habitats = max points) 18 Canopy coverage over streambed 0-5 0-5 0-5 4 (no shading vegetation = 0; continuous canopy = max points) 19 Substrate embeddedness NA* 0-4 0-4 3 (deeply embedded = 0; loose structure = max) 20 Presence of stream invertebrates (see page 4) 0-4 0-5 0-5 2 (no evidence = 0; common, numerous types = max points) 21 Presence of amphibians 0-4 0-4 0-4 0 O (no evidence = 0; common, numerous types = max points) 04 0 22 Presence of fish 0-4 0-4 0-4 0 (no evidence = 0; common, numerous types = max points) 23 Evidence of wildlife use 0-6 0-5 0-5 2 (no evidence = 0; abundant evidence = max points) Total Points Possible 100 100 100 100 TOTAL SCORE (also enter on first page) 50 *These characteristics are not assessed in coastal streams ATTACHMENT F Representative Photographs Site Photographs Photo Plate: 1 Environmental 2103 Vernon Drive Services, Inc. Project: ET04-006.29 L)c Mecklenburg County, North Carolina Date: Mar 2006 -------- ------------ Photo 1: View of the UT to Briar Creek, looking upstream below the large step-pool feature. Photo 2: View of the UT to Briar Creek, looking upstream above the large step-pool feature. a Site Photographs Photo Plate: 1 N SEnvironmental A Services, Inc. 2103 Vernon Drive Project: ET04-006.29 r Mecklenburg County, North Carolina Date: Mar 2006 Photo 1: View of the UT to Briar Creek, looking upstream below the large step-pool feature. Photo 2: View of the UT to Briar Creek, looking upstream above the large step-pool feature. Photo Plate: 2 Environmental Site Photographs ` I Services, Inc. 2103 Vernon Drive Project: ET04-006.29 Mecklenburg County, North Carolina Date: Mar 2006 Photo 3: View of channel incision and severe bank failure, looking southeast. Photo 4: View of bank erosion and adjacent residential structures, looking southwest. 20080451 PRE-CONSTRUCTION NOTIFICATION PURSUANT TO NATIONWIDE PERMIT NO. 13 2103 VERNON DRIVE CHARLOTTE, MECKLENBURG COUNTY, NORTH CAROLINA ESI Project No. ET04006.29 .March 10, 2006 For CHARLOTTE STORM WATER SERVICES 600 East Fourth Street Charlotte, NC 28202 704-432-0966 MAR 1 6 2006 DEN k - VOW'??,tLlUALITY WETLANWAND S "=QATER BRANCH BY ENVIRONMENTAL SERVICES, INC. 9600-G Southern Pine Boulevard Charlotte, NC 28273 704-523-7225 www.esinc.cc Table of Contents Executive Summary ...................................... Existing Conditions_______________________________________ Current Land Use Jurisdictional Determination -------------------- Agency Correspondence_______________________________ Cultural Resources Protected Species,______________________________________ Purpose and Need for the Project_________________ Avoidance and Minimization ----------------------- Proposed Impacts to Jurisdictional Waters__ Compensatory Mitigation_____________________________ References List of Attachments 1 2 2 -------------------------- 3 ----------------------•-•..3 --------------------------- 3 -------------------------•- 3 4 -------------------------- 4 ----------------------•----4 ............................ Attachment A - Figure 1. USGS Site Location Map Attachment A - Figure 2a. Soil Survey of Mecklenburg County (SSURGO database) Attachment A - Figure 2b. Soil Survey of Mecklenburg County (SSURGO database) aerial photo base Attachment A - Figure 3. Jurisdictional Boundary Field Map Attachment B - Request for Jurisdictional Determination Form Attachment C - Pre-Construction Notification Application - Nationwide Permit No. 13 Attachment D - Routine On-Site Data Form Attachment E - Stream Classification Forms Attachment F - Representative Photographs Attachment G - Proposed Impacts ii Executive Summary The 2103 Vernon Drive project is located in Charlotte near Providence Road, approximately one- quarter of a mile north of its intersection with Wendover Road in Mecklenburg County, North Carolina (Attachment A - Figures 1, 2a and 2b). The purpose of this project is to stabilize the bank and channel of an unnamed tributary (UT) to Briar Creek in order to prevent further stream bank erosion. The left bank of the UT to Briar Creek, located approximately 200 feet downstream from the outlet of a culvert under Chadsford Place, will be reinforced with a gabion wall and associated rip-rap along the base and around the ends of the wall, for a length of approximately 70 linear feet (If). ESI has been contracted by Charlotte Storm Water Services (CSWS) to provide permitting services for this project. The results of the on-site field investigation conducted by Environmental Services, Inc. (ESI) indicate that there is one jurisdictional stream channel within the project limits, a UT to Briar Creek, located northeast of 2103 Vernon Drive and transecting the site in a westerly direction (Attachment A - Figure 3). Impacts resulting from this activity will total approximately 70 if of bank and channel stabilization with a gabion wall and associated rip-rap along the base and around the ends of the wall. On behalf of CSWS, ESI is submitting a Pre-Construction Notification application in accordance with Nationwide Permit (NWP) Number 13 (Attachment Q. Existing Conditions The 2103 Vernon Drive project is located in Charlotte near Providence Road, approximately one- quarter of a mile north of its intersection with Wendover Road in Mecklenburg County, North Carolina (Attachment A - Figures 1, 2a and 2b). The UT to Briar Creek consists of a deeply entrenched, west flowing channel located directly northeast of 2103 Vernon Drive. The channel has become unstable, eroding into the stream bank and threatening the adjacent residential structures. The purpose of this project is to stabilize the bank and channel of a UT to Briar Creek in order to prevent further stream bank erosion. The left bank of the UT to Briar Creek, located approximately 200 feet downstream from the outlet of a culvert under Chadsford Place, will be reinforced with a gabion.wall and associated rip-rap along the base and around the ends of the wall, for a length of approximately 70 If. ESI has been contracted by CSWS to provide permitting services for this project. Current Land Use The project study area and surrounding vicinity consists primarily of residential land use. Dominant vegetation includes scarlet oak (Quercus coccinea), white oak (Quercus alba), American beech (Fagus grandifolia), eastern red cedar (Juniperus virginiana), southern magnolia (Magnolia grandiora), wild onion (Allium canadense), greenbrier (Smilax rotundifolia), and English ivy (Hedera helix). According to the Soil Survey Geographic (SSURGO) Database for Mecklenburg County, on-site soils consist of Mecklenburg fine sandy loam (MeD) (Attachment A - Figures 2a and 2b). This soil type is well drained and exhibits slow permeability and moderate shrink-swell potential. Jurisdictional Determination On January 10, 2006, ESI's Jeff Benton and Donald Hendrix reviewed the on-site jurisdictional waters of the U.S., as defined by the U.S. Army Corps of Engineers (USACE), utilizing the Routine On-Site Determination Method. This method is defined in the 1987 Corps of Engineers Wetlands Delineation Manual (Environmental Laboratory 1987). Based on this approach, there are no jurisdictional wetland areas within the project study area. A Routine On-Site Data Form representative of on-site non jurisdictional upland areas has been included as Attachment D. Jurisdictional waters of the U.S. were classified according to recent North Carolina Division of Water Quality (NCDWQ), and USACE guidance. The results of the on-site field investigation indicate that there is one jurisdictional stream channel within the project limits, UT to Briar Creek, located northeast of 2103 Vernon Drive (Attachment A - Figure 3). NCDWQ Stream Classification Forms and USACE Stream Quality Assessment Worksheets representative of the UT to Briar Creek have been included as Attachment E. Briar Creek is part of the Catawba River basin (HUC 03050103) (NCDWQ 03-08-34), is classified as "Class C" waters by the NCDWQ (NCDWQ 2004a), and is not included on the North Carolina 303(d) Impaired Waters List (NCDWQ 2004b). ESI is requesting written verification of the jurisdictional determination of the UT to Briar Creek (Attachment B). 2 The jurisdictional stream (UT to Briar Creek) consists of a deeply entrenched channel located northeast of 2103 Vernon Drive. The stream enters the site from the east and flows to the west towards Briar Creek. At a point approximately 20 feet downstream from a large step-pool feature west of Chadsford Place, the UT to Briar Creek scored a 38.5 out of a possible 71 points on the NCDWQ Stream Classification Form (Attachment B). A score of 19 is needed for the stream to be considered at least intermittent in nature, and a score of 30 is needed for the stream to be considered perennial in nature. At this same point, the UT to Briar Creek scored a 56 out of a possible 100 points on the USACE Stream Quality Assessment Worksheet (Attachment B). This worksheet was developed by the USACE as a guide for determining whether a jurisdictional stream would be considered important or unimportant using criteria such as flow, channel structure, aquatic habitat, and aquatic life. The scores derived from these forms indicate that the feature present is an important, perennial stream. At a point approximately 10 feet upstream from a large step-pool feature west of Chadsford Place, the UT to Briar Creek scored a 30.5 out of a possible 71 points on the NCDWQ Stream Classification Form, and a 50 out of a possible 100 points on the USACE Stream Quality Assessment Worksheet, indicating that the feature remains important, perennial stream for the entire length of the project study area (Attachment B). Representative photographs depicting the stream and on-site conditions are included as Attachment F. Agency Correspondence Cultural Resources ESI personnel visited the. State Historic Preservation Office (SHPO) on January 13, 2006, to review the archaeological site files in order to determine the presence of any areas of architectural, historic, or archaeological significance that would be affected by the project. No recorded archaeological sites or National Register listed properties are located within 0.5-mile of the project study area. Protected Species ESI personnel visited the North Carolina Natural Heritage Program (NCNHP) offices on January 10, 2006 to determine the presence of any federally-listed species or designated critical habitat located within the project vicinity. Based on the review of NCNHP records, no federally listed species are located within 3 miles of the project study area. No designated critical habitat is located within 3 miles of the project study area Purpose and Need for the Project The purpose of this project is to stabilize the bank and channel of a UT to Briar Creek in order to prevent further stream bank erosion. The left bank of the UT to Briar Creek, located approximately 200 feet downstream from the outlet of a culvert under Chadsford Place, will be reinforced with a gabion wall and associated rip-rap along the base and around the ends of the wall, for a length of approximately 70 If. These activities are being performed in order to adequately convey storm water flows and prevent further channel erosion. Without performing the proposed work, the UT to Briar Creek will continue to erode into the stream bank, threatening the adjacent residential structures and adding to the sediment load of downstream waters. Avoidance and Minimization Impacts to on-site jurisdictional waters have been minimized to the maximum extent practicable. Several bio-engineering and geotechnical techniques were considered in the conceptual design phase of this project. Given the constraints of the structure, embankment height, stream bed type, and stream elevation drop, design options were somewhat limited. A gabion system was selected due to the working room between the at risk structure and stream bed (Attachment F - Photo Plate 2). Stabilizing the bank and channel with only the necessary length of gabion wall will act to prevent major bank failures and downstream sedimentation, thus protecting the adjacent residential structures while increasing the water quality of the stream. Proposed Impacts to Jurisdictional Waters Proposed impacts include: ±70 linear feet of bank and channel stabilization with a gabion wall and associated class two rip-rap along the base and around the ends of the wall. In addition, due to existing on-site conditions, it will be necessary for heavy equipment to be temporarily located in the stream bed. Given that the stream is bedrock controlled, impacts resulting from this activity should be minimal. On behalf of CSWS, ESI is submitting a Pre-Construction Notification application with attachments in accordance with NWP 13 (Attachment Q. Table 1. Summary of Proposed Impacts Impacts Activity under Jurisdictional Area NWP No. 13 Install gabion wall with rip- UT to Briar Creek rap along base to left bank ?701f and channel Total ±701f Compensatory Mitigation The proposed design of this project is intended to prevent bank erosion and channel incision of the UT to Briar Creek, thereby reducing sedimentation and improving water quality downstream. Given these improvements, in addition to the limited nature of the proposed impacts, no mitigation is currently being proposed for this project. 4 REFERENCES Environmental Laboratory. 1987. US Army Corps of Engineers Wetlands Delineation Manual, Technical Report Y-87-1, US Army Engineer Waterways Experiment Station, Vicksburg, Mississippi. NC Division of Water Quality (NC DWQ). 2004a. Basinwide Information Management System (BIMS): Stream Classification. September 2004. http://h2o.enr.state.nc.us/bims/reports/basinsand waterbodies/hydroCatawba.pdf . Downloaded January 2006. NC Division of Water Quality (NCDWQ). 2004b. 303(d) List. http://h2o.enr.state.nc.us/ tmdl/documents/2004IRCategories4-7.pdf. Downloaded January 2006. US Geological Survey. 1974. Hydrologic Unit Map, State of North Carolina 5 State Highway 16 Gal u ? per Q ' r Feet 1 inch equals 2,000 feet Sources: Source. NCDOT GIS 1:24K l ) r- If d? 1,: o \,a i?l.5 County Digital Raster Graphics. ??` ' •' ?` GCS: NC State Plane NAD83, FIPS 3200 t ??`f 1 nr _` A 5\, ` r r it l J ? ?f I ? ` Disclaimer Informaton esen on this map was general y f4 i from secondary data sources and d is to be used for general planning purposes only. No warranties or representations of accuracy are expressed or implied. h ENVIRONMENTAL Project: ET04006.29 SERVICES, INC. Project Location Map Date: Mar 2006 9660-G Southern Pine Blvd. 2103 Vernon Drive Charlotte, NC 28273 (704)523-7225 Mecklenburg County, North Carolina Drwn/Chkd: MCS/JB (704) 523-7226 FAX Zenvlmnmentalservices.com Figure: 1 S:\Projects\2004\ET04006\029Vig1.mxd. 03/0812006, 5:00 pm S:\Proiects\2004\ET04006\029Vio2a,rt d, 0310812006, 5:00 pm r Streams - Roads Project Location Soils (Labeled) 0 ,00 200 Feet 1 inch equals 200 feet Sources: NRCS Soil Survey. GCS: NC State Plane NAD83, FIPS 3200 Disclaimer: Information represented on this map was derived from secondary data sources and is to be used for general planning purposes only. No warranties or representations of accuracy are expressed or implied. ENVIRONMENTAL SERVICES, INC. 9660-G Southern Pine Blvd. charlotte, NC 28273 (704)523-7225 (704) 523-7226 FAX S:\Proiecls\2004\ET04006\029\fig2b. mxd. 03108/2006. 5:00 pm F NRCS Soil Survey 2103 Vernon Drive Mecklenburg County, North Carolina Project: ET04006.29 Date: Mar 2006 Drwn/Chkd: MCS/JB Figure: 2b Note: Jurisdictional waters of the US were investigated by Envrionmental Services, Inc. (ESI), on 10 January 2006. Jursidictional areas have not been delineated nor verifed by the US Army Corps of Engineers. i / i i JD L?JI Existing Stream Channel 13( SC1 - 1 r 2 Photo Documentation Point ® SC points ® JD point ® Project Parcel Parcels Buildings - - Streams - Roads 0 16.5 33 Feet 1 inch equals 33 feet Sources: GIS Layers provided by Mecklenburg County Land Use and Environmental Services, Inc. (2006) GCS: NC State Plane NAD83, FIPS 3200 Disclaimer: Information represented on this map was derived from secondary data sources and is to be used for general planning purposes only. No warranties or representations of accuracy are expressed or implied. A'? SC2 2103 Vernon Dr. rl \ 2109 Vernon Dr. 2115 Vernon ENVIRONMENTAL Project: ET04006.29 SERVICES, INC. Approximate Jurisdictional Boundary Field Map Date: Ma 9660-G Southern Pine Blvd Charlotte, NC 28273 . 2103 Vernon Drive Mar 2006 (704)523-7225 Drwn/Chkd: MCS/JB (704)523-7226 FAX Mecklenburg County, North Carolina www envimnmenfalservices.com Figure: 3 5:00 p. ATTACHMENT B Request for Jurisdictional Determination Form REQUEST FOR JURISDICTIONAL DETERMINATION DATE: March 10, 2006 COUNTY Mecklenburg County, NC TOTAL ACREAGE OF TRACT < 1 acre PROJECT NAME (if applicable) 2103 Vernon Drive PROPERTY OWNER/APPLICANT (name, address and phone): Charlotte Storm Water Services POC: Mr. Isaac Hinson at (704) 336-4495 600 East Fourth Street Charlotte, North Carolina 28202 NAME OF CONSULTANT, ENGINEER, DEVELOPER (if applicable): Environmental Services Inc. POC: Mr. Paul Petitgout at (704) 523-7225 9600-G Southern Pine Boulevard Charlotte, North Carolina 28273 STATUS OF PROJECT (check one): ( ) On-going site work for development purposes (X) Project in planning stages (Type of project: NWP 13 ( ) No specific development planned at present ( ) Project already completed ADDITIONAL INFORMATION REQUIRED: Check items submitted - forward as much information as is available. At a minimum, the following first two items must be forwarded. (X) USGS Site Location Map (Attachment A - Figure 1) (X) NRCS Soil Survey (Attachment A - Figures 2a and 2b) (X) Approximate Jurisdictional Boundary Field Map (Attachment A - Figure 3) (X) Pre-Construction Notification Application (Attachment C) (X) Routine On-Site Data Form (Attachment D) (X) Steam Classification Forms (Attachment E) (X) Representative Photographs (Attachment F) (X) Agency Correspondence (Report) (X) Proposed Impacts (Attachment G) Signature of Propert? Owner or Authorized Agent Mr. Isaac Hinson L9 all a o D MAR 1 2006 ??w?r? auAUN Office Use Only: Form Version May 2002 Lf 0 USACE Action ID No. DWQ No. (If any particular item is not applicable to this project, please enter "Not Applicable" or "N/A".) 1. Processing 1. Check all of the approval(s) requested for this project: ? Section 404 Permit ? Riparian or Watershed Buffer Rules ? Section 10 Permit ? Isolated Wetland Permit from DWQ ® 401 Water Quality Certification 2. Nationwide, Regional or General Permit Number(s) Requested: Nationwide Permit No. 13 3. If this notification is solely a courtesy copy because written approval for the 401 Certification is not required, check here: ? 4. If payment into the North Carolina Wetlands Restoration Program (NCWRP) is proposed for mitigation of impacts (verify availability with NCWRP prior to submittal of PCN), complete section VIII and check here: ? 5. If your project is located in any of North Carolina's twenty coastal counties (listed on page 4), and the project is within a North Carolina Division of Coastal Management Area of Environmental Concern (see the top of page 2 for further details), check here: ? II. Applicant Information 1. Owner/Applicant Information Name: City of Charlotte Storm Water Services, Contact Isaac Hinson Mailing Address: 600 East Fourth Street Charlotte NC 28202 Telephone Number: (704) 336-4495 Fax Number: (704) 336-6586 E-mail Address: ihinsongci.charlotte.nc.us 2. Agent/Consultant Information (A signed and dated copy of the Agent Authorization letter must be attached if the Agent has signatory authority for the owner/applicant.) Name: Company Affiliation: Mailing Address: Telephone Number: Fax Number: E-mail Address: III. Project Information Attach a vicinity map clearly showing the location of the property with respect to local landmarks such as towns, rivers, and roads. Also provide a detailed site plan showing property boundaries and development plans in relation to surrounding properties. Both the vicinity map and site plan must include a scale and north arrow. The specific footprints of all buildings, impervious surfaces, or other facilities must be included. If possible, the maps and plans should include the appropriate USGS Topographic Quad Map and NRCS Soil Survey with the property boundaries outlined. Plan drawings, or other maps may be included at the applicant's discretion, so long as the property is clearly defined. For administrative and distribution purposes, the USACE requires information to be submitted on sheets no larger than 11 by 17-inch format; however, DWQ may accept paperwork of any size. DWQ prefers full-size construction drawings rather than a sequential sheet version of the full-size plans. If full-size plans are reduced to a small scale such that the final version is illegible, the applicant will be informed that the project has been placed on hold until decipherable maps are provided. 1. Name of project: 2103 Vernon Drive 2. T.I.P. Project Number or State Project Number (NCDOT Only): 3. Property Identification Number (Tax PIN): 18102181 4. Location County: Mecklenburg Nearest Town: Charlotte Subdivision name (include phase/lot number): N/A Directions to site (include road numbers, landmarks, etc.): From uptown Charlotte, head south on third street (HWY 16). Road will change names from third street to Providence Road. Continue on Providence Road for approximately 1.75 miles, then turn left onto Vernon Drive just after crossing Briar Creek. Travel approximately 0.25 mile, and project is located on the left at 2103 Vernon Drive. (Note - If project is linear, such as a road or utility line, attach a sheet that separately lists the coordinates for each crossing of a distinct waterbody.) 5. Property size (acres): < 1 acre residential parent parcel 6. Nearest body of water (stream/river/sound/ocean/lake): Briar Creek 7. River Basin: Catawba (HU# 03050103) (NCDWO: 03-08-34) (SIN#: 11-137-8-2) (Note - this must be one of North Carolina's seventeen designated major river basins. The River Basin map is available at http://h2o.enr.state.nc.us/admin/maps/.) 8. Describe the existing conditions on the site and general land use in the vicinity of the project at the time of this application: The project study area consists of an unnamed tributary (UT) to Briar Creek. The project study area and surrounding vicinity consists primarily of residential land use. 9. Describe the overall project in detail, including the type of equipment to be used: The UT to Briar Creek consists of a deeply entrenched, west flowing channel located directly northeast of 2103 Vernon Drive. At a point approximately 200 feet downstream from the outlet of a culvert under Chadsford Place, the channel has become unstable, eroding into the stream bank and threatening the adjacent residential structures. Stabilization of the stream bank and channel are proposed to correct the channel incision and bank erosion. A trackhoe, in addition to other typical excavation equipment will be used for this project. 10. Explain the purpose of the proposed work: The purpose of this project is to stabilize the bank and channel of a UT to Briar Creek in order to prevent further stream bank erosion. Without performing the proposed work, UT to Briar Creek will continue to erode into the stream bank, threatening the adjacent residential structures and adding to the sediment load of downstream waters. IV. Prior Project History If jurisdictional determinations and/or permits have been requested and/or obtained for this project (including all prior phases of the same subdivision) in the past, please explain. Include the USACE Action ID Number, DWQ Project Number, application date, and date permits and certifications were issued or withdrawn. Provide photocopies of previously issued permits, certifications or other useful information. Describe previously approved wetland, stream and buffer impacts, along with associated mitigation (where applicable). If this is a NCDOT project, list and describe permits issued for prior segments of the same T.I.P. project, along with construction schedules. V. Future Project Plans Are any future permit requests anticipated for this project? If so, describe the anticipated work, and provide justification for the exclusion of this work from the current application. There are no future plans for this area. VI. Proposed Impacts to Waters of the United States/Waters of the State It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to wetlands, open water, and stream channels associated with the project. The applicant must also provide justification for these impacts in Section VII below. All proposed impacts, permanent and temporary, must be listed herein, and must be clearly identifiable on an accompanying site plan. All wetlands and waters, and all streams (intermittent and perennial) must be shown on a delineation map, whether or not impacts are proposed to these systems. Wetland and stream evaluation and delineation forms should be included as appropriate. Photographs may be included at the applicant's discretion. If this proposed impact is strictly for wetland or stream mitigation, list and describe the impact in Section VIII below. If additional space is needed for listing or description, please attach a separate sheet. 1. Provide a written description of the proposed impacts: Proposed impacts include: JL70 linear feet of bank and channel stabilization with a izabion wall and associated class two rip-rap along the base and around the ends of the wall. In addition, due to existiniz on-site conditions, it will be necessary for heavy equipment to be temporarily located in the stream bed. Given that the stream is bedrock controlled, impacts resulting from this activity should be minimal. 2. Individually list wetland impacts below: Wetland Impact Area of Located within Distance to Site Number Type of Impact* Impact 100-year Floodplain** Nearest Stream Type of Wetland*** (indicate on ma) (acres) (yes/no) (linear feet) N/A * List each impact separately and identify temporary impacts. Impacts include, but are not limited to: mechanized clearing, grading, fill, excavation, flooding, ditching/drainage, etc. For dams, separately list impacts due to both structure and flooding. ** 100-Year floodplains are identified through the Federal Emergency Management Agency's (FEMA) Flood Insurance Rate Maps (FIRM), or FEMA-approved local floodplain maps. Maps are available through the FEMA Map Service Center at 1-800-358-9616, or online at http://www.fema.aov. *** List a wetland type that best describes wetland to be impacted (e.g., freshwater/saltwater marsh, forested wetland, beaver pond, Carolina Bay, bog, etc.) Indicate if wetland is isolated (determination of isolation to be made by USACE only). List the total acreage (estimated) of all existing wetlands on the property: N/A Total area of wetland impact proposed: N/A 3. Individually list all intermittent and perennial stream impacts below: Stream Impact Length of Average Width Perennial or Site Number Type of Impact* Impact Stream Name** of Stream Intermittent? (indicate on ma) (linear feet) Before Impact specify) Install gabion Site 1 wall with rip-rap along base to left ±70 if UT to Briar Creek f 15 feet Perennial bank and channel * List each impact separately and identify temporary impacts. Impacts include, but are not limited to: culverts and associated rip-rap, dams (separately list impacts due to both structure and flooding), relocation (include linear feet before and after, and net loss/gain), stabilization activities (cement wall, rip-rap, crib wall, gabions, etc.), excavation, ditching/straightening, etc. If stream relocation is proposed, plans and profiles showing the linear footprint for both the original and relocated streams must be included. ** Stream names can be found on USGS topographic maps. If a stream has no name, list as UT (unnamed tributary) to the nearest downstream named stream into which it flows. USGS maps are available through the USGS at 1-800-358-9616, or online at www.usgs.gov. Several internet sites also allow direct download and printing of USGS maps (e.g., www.topozone.com, www.ma quest.com, etc.). Cumulative impacts (linear distance in feet) to all streams on site: _+70 linear feet 4. Individually list all open water impacts (including lakes, ponds, estuaries, sounds, Atlantic Ocean and any other water of the U.S.) below: Open Water Impact Area of Name of Waterbody Type of Waterbody Site Number Type of Impact* Impact (if applicable) (lake, pond, estuary, sound, (indicate on ma) (acres) bay, ocean, etc.) N/A * List each impact separately and identify temporary impacts. Impacts include, but are not limited to: fill, excavation, dredging, flooding, drainage, bulkheads, etc. 5. Pond Creation If construction of a pond is proposed, associated wetland and stream impacts should be included above in the wetland and stream impact sections. Also, the proposed pond should be described here and illustrated on any maps included with this application. Pond to be created in (check all that apply): ? uplands ? stream ? wetlands Describe the method of construction (e.g., dam/embankment, excavation, installation of draw-down valve or spillway, etc.): N/A Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond, local stormwater requirement, etc.): N/A Size of watershed draining to pond: N/A Expected pond surface area: N/A VII. Impact Justification (Avoidance and Minimization) Specifically describe measures taken to avoid the proposed impacts. It may be useful to provide information related to site constraints such as topography, building ordinances, accessibility, and financial viability of the project. The applicant may attach drawings of alternative, lower-impact site layouts, and explain why these design options were not feasible. Also discuss how impacts were minimized once the desired site plan was developed. If applicable, discuss construction techniques to be followed during construction to reduce impacts. Impacts to on-site iurisdictional waters have been minimized to the maximum extent practicable. Several bio-en ineering and geotechnical techniques were considered in the conceptual design phase of this project. Given the constraints of the structure, embankment height, stream bed type, and stream elevation drop, design options were somewhat limited. A abion system was selected due to the working room between the at risk structure and stream bed. Stabilizing the bank and channel with only the necessary length of aabion wall will act to prevent major bank failures and downstream sedimentation, thus protecting the adjacent residential structures while increasing the water quality of the stream. VIII. Mitigation 1. Provide a brief description of the proposed mitigation plan. The description should provide as much information as possible, including, but not limited to: site location (attach directions and/or map, if offsite), affected stream and river basin, type and amount (acreage/linear feet) of mitigation proposed (restoration, enhancement, creation, or preservation), a plan view, preservation mechanism (e.g., deed restrictions, conservation easement, etc.), and a description of the current site conditions and proposed method of construction. Please attach a separate sheet if more space is needed. The proposed design of this project is intended to prevent bank erosion and channel incision of the UT to Briar Creek, thereby reducing sedimentation and improving water quality downstream. Given these improvements, in addition to the limited nature of the proposed impacts, no mitigation is currently being proposed for this project. 2. Mitigation may also be made by payment into the North Carolina Wetlands Restoration Program (NCWRP). Please note it is the applicant's responsibility to contact the NCWRP at (919) 733-5208 to determine availability and to request written approval of mitigation prior to submittal of a PCN. For additional information regarding the application process for the NCWRP, check the NCWRP website at http://h2o.enr.state.nc.us/wrp/index.htm. If use of the NCWRP is proposed, please check the appropriate box on page three and provide the following information: Amount of stream mitigation requested (linear feet): N/A Amount of buffer mitigation requested (square feet): N/A Amount of Riparian wetland mitigation requested (acres): N/A Amount of Non-riparian wetland mitigation requested (acres): N/A Amount of Coastal wetland mitigation requested (acres): N/A IX. Environmental Documentation (required by DWQ) Does the project involve an expenditure of public (federal/state) funds or the use of public (federal/state) land? Yes ® No ? If yes, does the project require preparation of an environmental document pursuant to the requirements of the National or North Carolina Environmental Policy Act (NEPA/SEPA)? Note: If you are not sure whether a NEPA/SEPA document is required, call the SEPA coordinator at (919) 733-5083 to review current thresholds for environmental documentation. Yes ? No If yes, has the document review been finalized by the State Clearinghouse? If so, please attach a copy of the NEPA or SEPA final approval letter. Yes ? No X. Proposed Impacts on Riparian and Watershed Buffers (required by DWQ) It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to required state and local buffers associated with the project. The applicant must also provide justification for these impacts in Section VII above. All proposed impacts must be listed herein, and must be clearly identifiable on the accompanying site plan. All buffers must be shown on a map, whether or not impacts are proposed to the buffers. Correspondence from the DWQ Regional Office may be included as appropriate. Photographs may also be included at the applicant's discretion. Will the project impact protected riparian buffers identified within 15A NCAC 2B .0233 (Meuse), 15A NCAC 2B .0259 (Tar-Pamlico), 15A NCAC 2B .0250 (Randleman Rules and Water Supply Buffer Requirements), or other (please identify )? Yes ? No ® If you answered "yes", provide the following information: Identify the square feet and acreage of impact to each zone of the riparian buffers. If buffer mitigation is required calculate the required amount of mitigation by applying the buffer multipliers. N/A Zone* Impact (square feet) Multiplier Required Mitigation 1 N/A 3 N/A 2 N/A 1.5 N/A Total N/A N/A * Zone 1 extends out 30 feet perpendicular from near bank of channel; Zone 2 extends an additional 20 feet from the edge of Zone 1. If buffer mitigation is required, please discuss what type of mitigation is proposed (i.e., Donation of Property, Conservation Easement, Riparian Buffer Restoration / Enhancement, Preservation or Payment into the Riparian Buffer Restoration Fund). Please attach all appropriate information as identified within 15A NCAC 2B .0242 or .0260. N/A XI. Stormwater (required by DWQ) Describe impervious acreage (both existing and proposed) versus total acreage on the site. Discuss stormwater controls proposed in order to protect surface waters and wetlands downstream from the property. Sources of nearbv impervious cover include roads. drivewavs. and rooftops. This proiect will not cause an increase in the impervious coverage of the project area. XII. Sewage Disposal (required by DWQ) Clearly detail the ultimate treatment methods and disposition (non-discharge or discharge) of wastewater generated from the proposed project, or available capacity of the subject facility. N/A XIII. Violations (required by DWQ) Is this site in violation of DWQ Wetland Rules (15A NCAC 2H .0500) or any Buffer Rules? Yes ? No Is this an after-the-fact permit application? Yes ? No XIV. Other Circumstances (Optional): It is the applicant's responsibility to submit the application sufficiently in advance of desired construction dates to allow processing time for these permits. However, an applicant may choose to list constraints associated with construction or sequencing that may impose limits on work schedules (e.g., draw-down schedules for lakes, dates associated with Endangered and Threatened Species, accessibility problems, or other issues outside of the applicant's control). Construction is scheduled to beizin following the receipt of the appropriate permits. /1010(0 Applicant/Agent's Signature Date (Agent's signature is valid only if an authorization letter from the applicant is provided.) DATAFORM ROUTINE WETLAND DETERMINATION (1987 COE Wetlands Delineation Manual) Project/Site: 2103 Vernon Drive Date: 1-10-06 Applicant/Owner: City of Charlotte Stormwater Services County: Mecklenburg Investigator: Environmental Services, Inc. State: NC Do normal circumstances exist on the site'? Yes No Community ID: mixed hardwood/residential Is the site significant) disturbed (atypical situation)? ?Yes ?? No Transect ID: n/a Is the area a potential problem area (If needed, explain)? Plot ID: upland ?Yes [?] No V EGETATION DOMINANT STRATUM INDICATOR DOMINANT STRATUM INDICATOR PLANTSPECIES PLANT SPECIES 1. scarlet oak tree NI 7. southern magnolia shrub FAC+ )uercus coccinea Magnolia grandiflora 2. white oak tree FACU 8. wild onion herb FACU- )uercus alba Allium canadense 3. American elm tree FACW 9. greenbrier vine FAC Ulmus americana Smilax rotundi/olia 4. American beech tree FACU 10. English ivy vine NI Fa us grandi olia Hedera helix 5. American beech shrub FACU 11. poison ivy vine FAC Fa us randi olia Toxicodendron radicans 6. eastern red cedar shrub FACU- 12. Juniperus vir iniana Percent of dominant species that are OBI,, FACW, or FAC (Excluding FAC-): 36% Fac Neutral Test: (includes FAC+ and wetter) Remarks The hydrophytic vegetation criterion has not been met. HYDROLOGY RECORDED DATA (DESCRIBE, IN REMARKS): WETLAND HYDROLOGY INDICATORS Primary Indicators: ? Stream, Lake, or Tide Gauge ? Inundated ? Aerial Photographs ? Saturated in Upper 12 Inches ? Other ? Water Marks ? Drill Lines NO RECORDED DATA AVAILABLE ? Sediment Deposits ? Drainage Patterns in Wetlands FIELD OBSERVATIONS Secondary Indicators (2 or more required): ? Oxidized Root Channels in Upper 12 Inches Depth of Surface Water: 0" ? Water-Stained Leaves ? Local Soil Survey Data Depth to Free Water in Pit: >18" ? FAC-Neutral Test ? Other (Explain in Remarks) Depth to Saturated Soil: >12" - , I'he hydrologic criterion has not been met. r grnrq MAP UNIT NAME (Series and Phase): Mapped as Mecklenburg Series DRAINAGE; CLASS: well drained TAXONOMY (SUBGROUP): Ultic Ha ludalfs FIELD OBSERVATIONS: Confirm Mapped Type? ? Yes? No PROFILE DESCRIPTION Depth (inches) Horizon Matrix Color (Munsell Moist) Mottle Color (Munsell Moist) Mottle Abundance/Contrast Texture, Concretions, Structure, etc. 0-14 5YR 4/6 sand loam w/ cobbles 14-18+ 5YR 4/6 7.5YR 5/8 common/distinct clay HYDRIC SOIL INDICATORS: ? Histosol ? Concretions ? Histic Epipedon ? High Organic Content in Surface Layer in Sandy Soils ? Reducing Conditions ? Aquic Moisture Regime ? Sulfidic Odor ? Organic Streaking in Sandy Soils ? Listing on National Hydric Soils List ? Listed on State or Local Hydric Soils List ? Gleyed or Low Chroma ? Color ? Other (Explain in Remarks) Remarks: The hydric soils criterion has not been met. WFTI.AND IIF.TFRMINATInN Hydrophytic Vegetation Present? ? Yes 0 No is this Sampling Point Within a Wetland? ? Yes No Wetland Hydrology Present? ? Yes? No H dric Soil Present? ? Yes El No Remarks: Data point is non-jurisdictional. North Garolma Uivision of Water Uuality - Stream laentitication corm; version 3.1 Date: 1/10/06 Project: 2103 Vernon Drive Latitude: 35° 10'53"N Evaluator: ESI Site: UT to Briar Creek (Reach A) Longitude: 80° 48'54"W Total points: Streams are at least intermittent if Icounty: Mecklenburg Other: Charlotte East, NC Quad >=19 or perennial if >=30. 38.5 A. Geomorpholo subtotal = 20 Absent < aIf'WN ak Mdddraw ?. Stro 1*. Continuous bed and bank 00 01 02 O 3 2. Sinuosity 00 01 O 2 03 3. In-channel structure: riffle pool sequence 00 0 1 0 2 03 4. Soil texture or stream substrate sorting 00 0 1 02 E) 3 5. Active/relic floodplain 00 01 Q 2 03 6. Depositional bars or benches 00 01 E) 2 03 7. Braided channel 00 0 1 02 03 8. Recent alluvial deposits 00 01 E) 2 03 9*. Natural levees 00 01 02 03 10. Headcuts 0 0 01 02 03 11. Grade controls 00 00.5 01 0 1.5 12. Natural valley and draina ewe 00 00.5 01 0 1.5 13. Second or greater order channel on existing USGS or NRCS ma or other documented evidence. Q No = 0 Q Yes = 3 'Man-made ditches are not rated. see discussions in manual B- Hvdroloav suhtntal = 10 14. Groundwater flow/discharge 00 01 G) 2 03 Water in channel an >4 rs since rain, or Water in c anne - d or growing season 00 01 02 03 16. Leaflitter 0 1.5 01 00.5 00 17. Sediment on plants 00 (E) 0.5 01 01.5 18. Organic debris lines or piles (wrack lines) 00 00.5 01 (E) 1.5 19. H dric soils (redoxomorphic features) present? 0 No = 0 0 Yes = 1.5 C_ Bieloav suhtntal = A 5 20*. Fibrous roots in channel 0 3 02 01 00 21*. Rooted plants in channel (E) 3 02 01 00 22. Crayfish 0 0 00.5 01 01.5 23. Bivalves 00 U 1 02 03 24. Fish 0 0 00.5 01 01.5 25. Amphibians 0 0 00.5 01 01.5 26. Macrobenthos (note diversity and abundance) 00 (E) 0.5 01 01.5 27. Filamentous algae; periphyton 00 00.5 (E) 1 01.5 28. Iron oxidizing bacteria/fun us 0 0 00.5 01 01.5 29*. Wetland plants in streambed 0 FAC 0 FACW O OBL Q SAV {] Other 0.5 0.75 1.5 2.0 0 'Items 20-21 focus on the presence of upland plants, item 29 focuses on the presence of aquatic or wetland plants Notes: This evaluation was performed on a 20 ft. reach directly below a large step-pool feature (Reach A). Norm uaronna uivision or water utuain - stream menuncaaon rorm; version s.-i Date: 1/10/06 Project: 2103 Vernon Drive Latitude: 35° 10'53"N Evaluator: ESI Site: UT to Briar Creek (Reach B) Longitude: 80° 48'54"W Total points: Streams are at least intermittent if County: Mecklenburg Other: Charlotte East, NC Quad >=19 or perennial if >=30. 30.5 A. Geomorphology subtotal = 14.5 Absent ;We k- , bddr to °'_° Stron - 1*. Continuous bed and bank 00 01 02 0 3 2. Sinuosity 00 Q) 1 02 03 3. In-channel structure: rife pool sequence 00 01 02 03 4. Soil texture or stream substrate sorting 00 01 02 03 5. Active/relic floodplain 00 01 0 2 03 6. Depositional bars or benches 00 Q 1 02 03 7. Braided channel 0 0 01 02 03 8. Recent alluvial deposits 00 01 02 03 9*. Natural levees 0 0 01 02 03 10. Headcuts Q 0 01 02 03 11. Grade controls 00 00.5 0 1 01.5 12. Natural valley and drains ewa 00 0.5 01 01.5 13. Second or greater order channel on existing USGS or NRCS map or other documented evidence. Q No = 0 0 Yes = 3 -men-mane oncnes are not rates; see aiscussions in manual g. Hvdrolnav suhtntA = R 14. Groundwater flow/dischar a 00 O 1 02 03 5. titer in channel an >4 rs since rain, or Water in channel - d or growing season 00, 01 02 (E) 3 16. Leaflitter 01.5 U 1 00.5 00 17. Sediment on plants 00 (-) 0.5 01 01.5 18. Organic debris lines or piles (wrack lines) 00 00.5 G 1 01.5 119. Hydric soils (redoxomorphic features) present? O No = 0 Q Yes = 1.5 C. Bioloav subtotal = 8 20*. Fibrous roots in channel Q 3 02 01 00 21*. Rooted plants in channel {a 3 02 01 00 22. Crayfish Q 0 00.5 01 01.5 23. Bivalves 00 01 02 03 24. Fish 0 0 00.5 01 01.5 25. Amphibians (E) 0 00.5 01 01.5 26. Macrobenthos (note diversity and abundance) (E) 0 00.5 01 01.5 27. Filamentous algae; periph ton 00 00.5 1 01.5 28. Iron oxidizing bacteria/fun us 0 0 00.5 01 01.5 29*. Wetland plants in streambed 0 FAC 0 FACW 0 OBL Q SAV 0 Other 0.5 0.75 1.5 2.0 0 -items zu-zi rocus on the presence of upiana plants, item za rocuses on me presence or aquatic or wetiana plants Notes: This evaluation was performed on a 20 ft. reach directly above a large step-pool feature (Reach B). USACE AID# DWQ # Site # (indicate on attached map) 0-01 STREAM QUALITY ASSESSMENT WORKSHEET Provide the following information for the stream reach under assessment: 1. Applicant's name: Charlotte Storm Water Services 2. Evaluator's name: Environmental Services Inc. 3. Date of evaluation: January 10, 2006 5. Name of stream: UT to Briar Creek 7. Approximate drainage area: 400 acres 9. Length of reach evaluated: 20 feet (Reach A) 11. Site coordinates (if known): prefer in decimal degrees. 4. Time of evaluation: 2:00 pm 6. River basin: Catawba 8. Stream order: 1't 10. County: Mecklenburg 12. Subdivision name (if any): N/A Latitude (ex. 34.872312): 35.1813°N Longitude (ex. -77.556611): 80.8149°W Method location determined (circle): GPS o o Shee Ortho (Aerial) Photo/GIS Other GIS Other: 13. Location of reach under evaluation (note nearby roads and landmarks and attach map identifying stream(s) location): From uptown Charlotte head south on third street (HWY 16). Road will change names from third street to Providence Road. Continue on Providence Road for approximately 1.75 [Hiles, then turn left onto Vernon Drive just after crossing, Briar Creek. Travel approximately 0.25 mile, and project is located on the left at 2103 Vernon Drive. 14. Proposed channel work (if any): 60 linear feet of bank stabilization. 15. Recent weather conditions: Little to no rainfall within last 48 hours. 16. Site conditions at time of visit: Channel deeply entrenched and incised into banks. 17. Identify any special waterway classifications known: Section 10 Tidal Waters Essential Fisheries Habitat Trout Waters Outstanding Resource Waters Nutrient Sensitive Waters Water Supply Watershed (]-IV) 18. Is there a pond or lake located upstream of the evaluation point? YES ® If yes, estimate the water surface area: N/A 19. Does channel appear on USGS quad map? ES NO 20. Does channel appear on USDA Soil Survey? YES 21. Estimated watershed land use: 85 % Residential 10 % Commercial % Industrial % Agricultural % Forested % Cleared / Logged 5 % Other (institutional) 22. Bankfull width: 20' 23. Bank height (from bed to top of bank): 24. Channel slope down center of stream: Flat (0 to 2%) Gentle (2 to 4%) Moderate (4 to 10%) ? Steep (> 10%) 25. Channel sinuosity: Straight Occasional bends Frequent meander Very sinuous Braided channel Instructions for completion of worksheet (located on page 2): Begin by determining the most appropriate ecoregion based on location, terrain, vegetation, stream classification, etc. Every characteristic must be scored using the same ecoregion. Assign points to each characteristic within the range shown for the ecoregion. Page 3 provides a brief description of how to review the characteristics identified in the worksheet. Scores should reflect an overall assessment of the stream reach under evaluation. If a characteristic cannot be evaluated due to site or weather conditions, enter 0 in the scoring box and provide an explanation in the comment section. Where there are obvious changes in the character of a stream under review (e.g., the stream flows from a pasture into a forest), the stream may be divided into smaller reaches that display more continuity, and a separate form used to evaluate each reach. The total score assigned to a stream reach must range between 0 and 100, with a score of 100 representing a stream of the highest quality. Total Score (from reverse): 56 Comments: This evaluation was performed on an approximately 20' reach directly below a large step-pool feature (Reach A). Evaluator's Signature Date January 10, 2006 This channel evaluation form is intended to be used only as a guide to assist landowners and environmental professionals in gathering the data required by the United States Army Corps of Engineers to make a preliminary assessment of stream quality. The total score resulting from the completion of this form is subject to USACE approval and does not imply a particular mitigation ratio or requirement. Form subject to change - version 06/03. To Comment, please call 919-876-8441 x 26. STREAM QUALITY ASSESSMENT WORKSHEET # CHARACTERISTICS ECOREGION POINT RANGE SCORE Coastal Piedmont Mountain 1 Presence of flow / persistent pools in stream 0-5 0-4 0-5 3 (no flow or saturation = 0; strong flow = max points) 2 Evidence of past human alteration 0-6 0-5 0-5 4 (extensive alteration = 0; no alteration = max points) 3 Riparian zone 0-6 0-4 0-5 2 (no buffer = 0; contiguous, wide buffer = max points) 4 Evidence of nutrient or chemical discharges 0-5 0-4 0-4 3 (extensive discharges = 0; no discharges = max points) 5 Groundwater discharge 0-5 0-4 0-4 2 (no discharge = 0; springs, seeps, wetlands, etc. = max points) 6 Presence of adjacent floodplain 0-4 0-4 0-2 3 (no floodplain = 0; extensive floodplain = max points) Entrenchment / floodplain access 0-5 0-4 0-2 0 (deeply entrenched = 0; frequent flooding = max points) 8 Presence of adjacent wetlands 0-6 0-4 0-2 0 (no wetlands = 0; large adjacent wetlands = max points) 9 Channel sinuosity 0-5 0-4 0-3 2 (extensive channelization = 0; natural meander = max points) 10 Sediment input 0-5 0-4 0-4 3 (extensive deposition= 0; little or no sediment = max points) 11 Size & diversity of channel bed substrate NA* 0-4 0-5 4 (fine, homogenous = 0; large, diverse sizes = max points) 12 Evidence of channel incision or widening 0-5 0-4 0-5 1 (deeply incised = 0; stable bed & banks = max points) 13 Presence of major bank failures 0-5 0-5 0-5 2 (severe erosion = 0; no erosion, stable banks = max points) 14 Root depth and density on banks 0-3 0-4 0-5 3 (no visible roots = 0; dense roots throughout = max points) 15 Impact by agriculture, livestock, or timber production 0-5 0-4 0-5 4 (substantial impact =0; no evidence = max points) 16 Presence of riffle-pool/ripple-pool complexes 0-3 0-5 0-6 4 (no riffles/ripples or pools = 0; well-developed = max points) 1 Habitat complexity 0-6 0-6 0-6 4 (little or no habitat = 0; frequent, varied habitats = max points) 18 Canopy coverage over streambed 0-5 0-5 0-5 4 (no shading vegetation = 0; continuous canopy = max points) 19 Substrate embeddedness NA* 0-4 0-4 4 (deeply embedded = 0; loose structure = max) 20 Presence of stream invertebrates (see page 4) 0-4 0-5 0-5 2 (no evidence = 0; common, numerous types = max points) 21 Presence of amphibians 0-4 0-4 0-4 0 O (no evidence = 0; common, numerous types = max points) 22 Presence of fish 0-4 0-4 0-4 0 (no evidence = 0; common, numerous types = max points) 23 Evidence of wildlife use 0-6 0-5 0-5 2 (no evidence = 0; abundant evidence = max points) Total Points Possible 100 100 100 100 TOTAL SCORE (also enter on first page) 56 *These characteristics are not assessed in coastal streams USACE AID# DWQ # Site # (indicate on attached map) O STREAM QUALITY ASSESSMENT WORKSHEET Provide the following information for the stream reach under assessment: 1. Applicant's name: Charlotte Storm Water Services 2. Evaluator's name: Environmental Services Inc. 3. Date of evaluation: January 10, 2006 5. Name of stream: UT to Briar Creek 7. Approximate drainage area: 400 acres 9. Length of reach evaluated: 20 feet (Reach B) 11. Site coordinates (if known): prefer in decimal degrees. Latitude (ex. 34.872312): 35.1813°N 4. Time of evaluation: 2:15 pmt 6. River basin: Catawba 8. Stream order: 1 s` 10. County: Mecklenburg 12. Subdivision name (if any): N/A Longitude (ex. -77.556611): 80.8149°W Method location determined (circle): GPS o o Shee Ortho (Aerial) Photo/GIS Other GIS Other: 13. Location of reach under evaluation (note nearby roads and landmarks and attach map identifying stream(s) location): From uptown Charlotte, head south on third street (HWY 16). Road will change names from third street to Providence Road. Continue on Providence Road for approximately 1.75 miles, then turn left onto Vernon Drive just after crossing Briar Creek. Travel approximately 0.25 mile, and project is located on the left at 2103 Vernon Drive. 14. Proposed channel work (if any): 60 linear feet of bank stabilization. 15. Recent weather conditions: Little to no rainfall within last 48 hours. 16. Site conditions at time of visit: Channel deeply entrenched and incised into banks. 17. Identify any special waterway classifications known: Section 10 Tidal Waters Essential Fisheries Habitat Trout Waters Outstanding Resource Waters Nutrient Sensitive Waters Water Supply Watershed (I-IV) 18. Is there a pond or lake located upstream of the evaluation point? YES O If yes, estimate the water surface area: N/A 19. Does channel appear on USGS quad map? YES NO 20. Does channel appear on USDA Soil Survey? YES 21. Estimated watershed land use: 85 % Residential 10 % Commercial % Industrial % Agricultural % Forested % Cleared / Logged 5 % Other (institutional) 22. Bankfull width: 10' 23. Bank height (from bed to top of ban 24. Channel slope down center of stream: Flat (0 to 2%) Gentle (2 to 4%) Moderate (4 to 10%) 4 Steep (>I 0%) 25. Channel sinuosity: Straight Occasional bends Frequent meander Very sinuous Braided channel Instructions for completion of worksheet (located on page 2): Begin by determining the most appropriate ecoregion based on location, terrain, vegetation, stream classification, etc. Every characteristic must be scored using the same ecoregion. Assign points to each characteristic within the range shown for the ecoregion. Page 3 provides a brief description of how to review the characteristics identified in the worksheet. Scores should reflect an overall assessment of the stream reach under evaluation. If a characteristic cannot be evaluated due to site or weather conditions, enter 0 in the scoring box and provide an explanation in the comment section. Where there are obvious changes in the character of a stream under review (e.g., the stream flows from a pasture into a forest), the stream may be divided into smaller reaches that display more continuity, and a separate form used to evaluate each reach. The total score assigned to a stream reach must range between 0 and 100, with a score of 100 representing a stream of the highest quality. Total Score (from reverse): 50 Comments: This evaluation was performed on an approximately 20' reach directly above a large step-pool feature (Reach B). Evaluator's Signature Date January 10, 2006 This channel evaluation form is intended to be used only as a guide to assist landowners and environmental professionals in gathering the data required by the United States Army Corps of Engineers to make a preliminary assessment of stream quality. The total score resulting from the completion of this form is subject to USACE approval and does not imply a particular mitigation ratio or requirement. Fonn subject to change - version 06/03. To Comment, please call 919-876-8441 x 26. STREAM QUALITY ASSESSMENT WORKSHEET # CHARACTERISTICS ECOREGION POINT Coastal Piedmont 1 Presence of flow / persistent pools in stream 0-5 0-4 (no flow or saturation = 0; strong flow = max points) 2 Evidence of past human alteration 0-6 0-5 (extensive alteration = 0; no alteration = max points) 3 Riparian zone 0-6 0-4 (no buffer = 0; contiguous, wide buffer = max point s) 4 Evidence of nutrient or chemical discharges 0-5 0-4 (extensive discharges = 0; no discharges = max points) 5 Groundwater discharge 0-5 0-4 (no discharge = 0; springs, seeps, wetlands, etc. = max oints 6 Presence of adjacent floodplain 0-4 0-4 (no floodplain = 0; extensive floodplain = max points) Entrenchment / floodplain access 0-5 0-4 r% (deeply entrenched = 0; frequent flooding = max points) 8 Presence of adjacent wetlands 0-6 0-4 (no wetlands = 0; large adjacent wetlands = max points) 9 Channel sinuosity 0-5 0-4 (extensive channelization = 0; natural meander = max points) 10 Sediment input 0-5 0-4 (extensive deposition= 0; little or no sediment = max points) 11 Size & diversity of channel bed substrate NA* 0-4 (fine, homogenous = 0; large, diverse sizes = max points) 12 Evidence of channel incision or widening 0-5 0-4 (deeply incised = 0; stable bed & banks = max points) ?-+ 13 Presence of major bank failures (severe erosion = 0; no erosion, 0-5 0-5 d stable banks = max points) 14 Root depth and density on banks 0-3 0-4 H (no visible roots = 0; dense roots throughout = max points) 15 Impact by agriculture, livestock, or timber production 0-5 0-4 (substantial impact =0; no evidence = max points) 16 Presence of riffle-pool/ripple-pool complexes 0-3 0-5 (no riffles/ripples or pools = 0; well-developed = max points) 1 Habitat complexity 0-6 0-6 varied habitats = max points) (little or no habitat = 0; frequent , 18 Canopy coverage over streambed 0-5 0-5 (no shading vegetation = 0; continuous canopy = max points) 19 Substrate embeddedness NA* 0-4 (deeply embedded = 0; loose structure = max) 20 Presence of stream invertebrates (see page 4) 0-4 0-5 (no evidence = 0; common, numerous types = max points) 21 Presence of amphibians 0-4 0-4 Q (no evidence = 0; common, numerous types = max points) C 22 Presence of fish 0-4 0-4 (no evidence = 0; common, numerous types = max points) 23 Evidence of wildlife use 0-6 0-5 (no evidence = 0; abundant evidence = max points) Total Points Possible 100 100 TOTAL SCORE (also enter on first page) *These characteristics are not assessed in coastal streams Site Photographs Photo Plate: 1 Environmental 2103 Vernon Drive Services, Inc. Project: ET04-006.29 Mecklenburg County, North Carolina Date: Mar 2006 s Photo 1: View of the UT to Briar Creek, looking upstream below the large step-pool feature. Photo 2: View of the UT to Briar Creek, looking upstream above the large step-pool feature. Site Photographs Photo Plate: 2 I Environmental 2103 Vernon Dave Services, Inc. Project: ET04-006.29 Mecklenburg County, North Carolina Date: Mar 2006 Photo 3: View of channel incision and severe bank failure, looking southeast. Photo 4: View of bank erosion and adjacent residential structures, looking southwest. • 5.2 Hydrological Characterization 5.2.1 Groundwater Modeling Four groundwater monitoring gauges were installed in wetlands A-5 and A-6 on May 5, 2005 (see Figure 5) to help model wetland hydrology. The gauges provided baseline hydrologic data for existing wetlands targeted for enhancement and restoration. The gauge hydrographs with rainfall data are presented in Appendix 7. Gauge data from May 5, 2005 to October 21, 2005 provide the following insights into groundwater hydrology for the study area: ¦ Gauge CE1, located in the interior of wetland A-6, recorded approximately 24 consecutive days of groundwater levels consistent with minimum USACE wetland hydrology requirements. The water level was within 1 foot of the ground surface for approximately 11 % of the growing season. ¦ Gauge CE3, located at the toe of slope furthest from the stream, recorded approximately 26 consecutive days of groundwater levels consistent with minimum USACE wetland hydrology requirements. The water level was within 1 foot of the ground surface for approximately 12% of the growing season. ¦ Gauge CE6, located closest to the confluence between Rich Fork and Primary UT to Rich Fork, recorded approximately 15 consecutive days of groundwater levels consistent with minimum • USACE wetland hydrology requirements. The water level was within 1 foot of the ground surface for approximately 7% of the growing season. ¦ Gauge CE4, located on a crown area in the middle of the field shows that the area does not currently meet minimum wetland hydrology criteria but could benefit from grading the crown by approximately 20 inches to match the surrounding elevation. This finding was verified by Soil, Water, and Environment Group, LLC (SWE) during their field visit (Appendix 12). 5.2.2 Surface Water Modeling Surface water flows were modeled using HEC-RAS (see Section 7.3). The analysis showed that most of the site's wetlands become inundated during 0.05 to 0.10 probability flooding events. 5.2.3 Hydrologic Budget On-site wetlands may be grouped into two distinct groups based on hydrology: floodplain depressions and toe-of-slope seeps. The hydrologic budget of the floodplain depressions rely primarily on periodic flooding from adjacent streams, precipitation, and groundwater inflows. Inputs from flooding and precipitation are stored in depressions within the wetlands microtopography and the ponded water slowly infiltrates into soils. The groundwater generally flows from upslope areas toward the stream channel. Between the stream and wetland, the groundwater slopes downward toward the base elevation of the stream. The higher the base flow elevation relative to the groundwater elevation, the shallower the downward slope of the groundwater. Wetlands A-5 and A-6 are examples of floodplain depressional • wetlands and are also considered riverine wetlands. 22 • The toe-of-slope seep relies primarily on upstream sheet flow, precipitation, and groundwater inputs to determine its hydrologic budget. Groundwater is the primary hydrologic input with flood flows a negligible influence due the distance away from the channel. Much of the impairment to the site's wetlands' hydrologic budget results from past modifications to the streams adjacent to the wetlands and modifications to the land surface. Less reliant on the streams for hydrology, the toe-of-slope seeps hydrologic functions remain intact; the seeps will benefit primarily from preservation. The floodplain depressional wetlands rely more heavily on flood flows and are thus strongly impaired by the stream channel degradation (down cutting) and modifications of the land surface. The lowered base elevations of the streams have decreased local groundwater elevations in the wetland areas adjacent to the stream. Some of the floodplain depressional wetlands are further impaired due to alterations to the land surface that have reduced flood storage resulting in a reduction of the ponding and infiltration component of the hydrologic budget. These more degraded wetlands may be restored by restoring the adjacent streams to provide increased local groundwater elevations and regarding the surface to improve accessibility to flood flows and create microtopography that can support ponding and infiltration. 5.3 Soil Characterization The Soil, Water, and Environment Group (SWE), a sub-consultant to Kimley-Horn, performed a site investigation on June 15, 2005 to confirm NRCS soil survey mapping data and recorded an array of detailed soil descriptions for areas representing different landscape positions across the site. With the array, SWE determined the extent of hydric soils for the purpose of wetland restoration / . enhancement site criteria. The resulting soil descriptions are presented in Appendix 12. The areas within the wetlands have been mapped by the NRCS Davidson County (Davidson County Natural Resource Conservation Service 1994) mapping as Chewacla loam (Fluvaquentic Dystrudepts). Based on soil descriptions provided by SWE, the wetland soils are most similar to Oakboro silt loam and Chewacla loam. Some descriptions match Wehadkee loam (Fluvaquentic Endoaquepts) series found in other county surveys. Chewacla loam, Oakboro silt loam, and Wehadkee loam are considered hydric soils by NRCS. These series are described by SWE as: ... somewhat poorly drained and frequently flooded from riverine systems and toe slope drainage. Subsoil consists of loamy and silty clay textured soils. These soils are found on nearly level floodplains along creeks and drainageways. Permeability is moderate for these soil series. The subsoil is characterized by a clay or silty clay that restricts water movement between 3 and 33 inches below the soil surface. Seasonally high water tables are found below the soil surface between 0.5 and 1.5 feet for the Chewacla and Wehadkee and 1 to 2 feet for the Oakboro series soils. SWE concluded that the investigated areas had hydric soils and were suitable for wetland restoration. 5.4 Plant Community Characterization is The project wetlands lie within three general plant communities. The natural communities- piedmont alluvial forest and piedmont bottomland forest-differ by landscape position and 23 hydrologic regime. The alluvial forest lies within the active floodplain while the bottomland forest also sits within the floodplain but receives less flooding. These communities were previously described in Section 3.6. The remaining community-open field-represents areas cleared for primarily agricultural purposes. These areas lie within the floodplain and receive a continuum of flood flows in the same range as the natural communities. The fields consist of primary Fescue (Festuca spp.) or Tobacco (Nicotiana spp.) with volunteering wetland vegetation. 6.0 Reference Wetland Wetland area A-6 will serve as the project's reference wetland for vegetation and hydrology. This wetland is absent of recent direct disturbance. Compared to the project's enhancement and restoration wetlands, it lies within the same landscape position and has the same hydrologic regime. This wetland functions effectively ecologically, but would benefit from minor enhancements to vegetation by removing invasive species. 6.1 Hydrological Characterization The reference wetland has the same hydrologic regime present in the restoration and enhancement wetlands. The dominant hydrologic influence is flood flows from the adjacent stream with additional hydrologic influences from groundwater and precipitation. The flat slope and microtopography creates an environment for ponding that promotes infiltration leading to extended periods of soil saturation. • Gauge data (Section 5.2.1) and soil core descriptions (Section 5.3) indicate persistent hydric conditions. The wetland has lost some hydrologic function due to down cutting of the stream bed that has lowered the groundwater levels nearest the channel. 6.2 Soil Characterization The wetland area likely had been used for agriculture in the past, but a review of historical aerial photography shows the area in forest for at least the last 60 years. During this period, the soils have maintained or developed hydric character. Examination of a soil core taken in the wetland, described in Section 5.3, classified the soils as a combination of Chewacla, Oakboro, and Wehadkee loams and verified the hydric character of the soils. The soil description is provided in Appendix 12 sheet REF-1. 6.3 Plant Community Characterization 6.3.1 Community Description The reference wetland includes a mosaic of two natural communities: piedmont alluvial forest and piedmont bottomland forest. These communities were previously described in Section 3.6. The vegetation consist of mostly naturally occurring species but also includes some nuisance species such as Chinese Bentgrass (Microstegium vimineum), Japanese Honeysuckle (Lonicera japonica), and Chinese Privet (Ligustrum sinense.) LJ 24 • 7.0 Project Site Restoration Plan 7.1 Restoration Project Goals and Objectives The Valley Fields Farm restoration project strives to restore and enhance wetland areas, restore and improve stability to degraded channels, and restore ecological function to the channels and adjacent riparian buffer. The restoration plan was designed with consideration of the following site characteristics: ¦ Rapidly developing watershed ¦ Areas of limited belt width due to utility easements ¦ Existing beaver population The approach to restoration design is described in the following sections. Stream Restoration Approach The stream restoration design adjusted channel dimension, pattern, and profile to a stable configuration. The configuration was based on reference reach morphology, values from regional curves, regime equations, experience from other restoration projects, and the existing channel morphology. These reference values are presented in Restoration Table IV. The stream restoration either restored the streams in place or created a new channel. On the upper sections of Rich Fork and the primary tributary to Rich Fork, the base flow elevation remained relatively in place and lower, is more active flood prone areas were created. Dimension The riffle channels cross sectional areas were calculated from the hydraulic geometry curves derived from the reference reaches and regional curves. The riffle cross sections were shaped to have a mean depth and width capable of transporting existing and predicted future sediment loads for the designed channel slope. A bankfull bench was added to account for an increase in the frequency and discharge peaks of bankfull events due to urbanization of the watershed. The pool cross sections were shaped based on riffle to pool cross section relationships found in the appropriate reference reach. The reference dimensionless ratios are included in the morphological table (Restoration Table IV) and typical cross sections are shown in the attached Restoration Plan. Pattern The channel planform was dictated by reference ratios for meander wavelength and radius of curvature derived from the reference reaches. The belt widths were based on reference ratios but were limited in some areas by the topography of the valley. Planform sinuosity was limited on the upper sections of the restoration reaches by utility easements. In portions of these sections, the channel bedform (see next section) was adjusted to compensate for the lack of energy dissipation in the linear form. The proposed planform sinuosity allowed pool to pool spacing and riffle locations to match reference conditions. The proposed sinuosity provided the appropriate slope to transport the material coming into the reach. The planform values and ratios are provided in the morphological table in Restoration Table IV and the Restoration Plan provides the designed channel alignment. C. 25 Bedform • The design channel bedform predominantly consists of a riffle - pool sequence with runs and glides between them. The design depths and pool to pool spacing of the features were based on reference reach values (Restoration Table IV). The pools were located in the apex of meander bends with riffles located between the pools in the tangent portions of the channel. The pools will be over-dug to allow for some sedimentation. Portions of the project reach with higher gradients were designed as step - pool systems for energy dissipation in the constrained sections. The pool-to-pool spacing and facet slopes and depths were based on the "B" type reference reach (Off-site Reference). The profile section of the Restoration Plan shows the designed channel bedform. Structures In-stream structures were placed in the design channel to provide grade control and maintain overall design slope. In-stream structures also were used to protect stream banks and increase aquatic habitat diversity. The types of structures incorporated into the restoration project include rock cross vanes, constructed riffles, A-vanes, root wads, and log vanes. Root wads were used only for the purpose of providing habitat. Beaver Management An existing beaver population has been exacerbating channel degradation to the upper sections of Rich Fork (Reaches A-4, A-3, and A-2). To prevent impacts by beavers to the newly designed • channels, a beaver management plan will remove existing on-site beaver populations and prevent upstream populations from repopulating the site. The existing population will be removed by a qualified contractor. Repopulation of the site by beavers from neighboring streams will be controlled though active management. Active management will involve a regular schedule of beaver trapping by a qualified contractor. Beaver trapping will occur bimonthly for the first year after construction and then quarterly through the rest of the monitoring period. The restoration plan also includes design measures to avert reoccupation by beavers. The reconfiguration of the stream channel from a wide incised dimension (G and F channels) to a higher velocity system with access to its floodplain should reduce habitat potential. Protecting trees with chicken wire or tree shelters should also reduce habitat potential. Wetland Enhancement/ Restoration Approach The net result of the wetland enhancement and restoration will be the reconnection of functional biological communities throughout the project area along the continuum of the project streams. The numerous pocket wetlands scattered within the project area will be preserved, enhanced, and restored through the combination of stream, wetland, and riparian enhancement and restoration. Specific enhancement and restoration efforts are directed at the larger contiguous wetland areas. These efforts will improve the existing ecological function of on-site wetlands through beneficial modifications to wetland hydrology, vegetation, and soils. Wetland enhancement and restoration will proceed in concert with stream restoration. Improvements to the stream channel will lead to • hydrological improvements to adjacent wetlands. The vegetation component of wetland 26 enhancement and restoration will share the same base goals and procedures as the riparian planting plan. The wetland enhancement and restoration approach for hydrology is detailed in section 7.5; the soils approach is detailed in section 7.6; and the vegetation approach is detailed in section 7.7. • Riparian Buffer Restoration Approach As with the wetland enhancement / restoration approach, reestablishing the riparian buffer will restore habitat connectivity throughout the conservation easement. Prior to planting, the soils will be treated as described in section 7.6 to facilitate plant establishment. New plants will be installed as directed in section 7.7. Along some reaches, the riparian buffer will not be contiguous because utility easements located throughout the conservation easement will create gaps of non woody vegetation. These areas will be planted with native grasses; however these areas are not protected against maintenance and may be cleared at any time by the responsible utility. Table 9 shows the lengths along each reach where a utility easement will encroach into the adjacent riparian buffer. Utility easements usually only affect a single side of a reach except for the lower 640 feet of reach C where the utility easements will encroach the riparian buffer on both sides of the channel. For much of the project area, the riparian buffer will be expanded beyond the standard 50 foot buffer. The project will restore approximately 40 acres of riparian buffer compared to approximately 23 acres of restoration that would result from a 50 foot wide buffer. The dampening of water quality and habitat function due to the utility encroachments should be more than compensated by the expanded area of the riparian buffer. Table 9: Utility Easement Encroachment of Riparian Buffer Left Bank Buffer Zones Right Bank Buffer Zones Reach 0 - 25 Feet 25 - 50 Feet > 50 Feet 0 - 25 Feet 25 - 50 Feet > 50 Feet Linear Feet Linear Feet Linear Feet Linear Feet Linear Feet Linear Feet UpperA 110 0 3,100 1,440 630 1,140 Lower A 540 240 1,770 520 0 2,030 B 390 0 2,610 780 220 2,000 C* 780 620 200 640 160 800 D 0 0 300 0 0 300 J 0 0 210 0 0 210 Total (Feet) 1,820 860 8,190 3,380 1,010 6,480 Percent of 17% Total 8% 75% 31% 9/° ° 60/° ° Note: All utility easement crossings were considered to be 0 - 25 feet from bank. *The lower 640 feet of Reach C is border by a utility easement 0 - 25 feet from both banks. Rich Fork (Reach A), Primary UT to Rich Fork (Reach B), and Tributary to Primary UT to Rich Fork (Reach D) are all designed as C5--- >B5c channels. The Secondary Tributary to Rich Fork (Reach C) is designed to be a C5 channel. The target wetland type will be Palustrine forested. 7.1.2 Target Wetland Communities / Buffer Communities Wetland A-6 (Figure 10) will serve as a reference for both wetland and riparian buffer communities. Wetland A-6 includes a mix of piedmont bottomland and alluvial forests. Wetland A-6 shows 27 • evidence of a maturing ecological community consisting of a mix of canopy and understory species. A wide variety of species are present and the trees are openly spaced. Wetland A-6 lies within the same landscape position and has the same hydrologic regime as the enhancement / restoration wetland and riparian buffer areas. 7.2 Sediment Transport 7.2.1 Methodology Sediment transport was calculated using shear stress equations to verify that the designed channel would be able to transport at bankfull its bedload without aggrading or degrading. The Shields and Rosgen Colorado curves for initiation of particle movement were used to estimate the range of particles transported for a given shear stress. Two physical characteristics of the channel design that affect the shear stress on the channel bed are the slope of the channel and hydraulic radius. i = 7Rs Where: i= shear stress (lb/ft) y = specific gravity of water (62.4 lb/ft) R = hydraulic radius (ft) s = water surface slope (ft/ft) The hydraulic radius equals the cross sectional area divided by the wetted perimeter. is R= A P Where: R = hydraulic radius A = cross-sectional area (ft) P = wetted perimeter (ft) 7.2.2 Calculations and Discussion Table 10 provides the results of the sediment transport calculations using the shear stress equation. The higher value for the particle range is based on the Rosgen Colorado curve and the lower value is based on the Shields curve. All of the reaches receive excessive sand inputs due to land use changes in the watershed and bank erosion. The channel is designed to eliminate bank erosion and to flush the sands and transport the characteristic sediments. The characteristic sediments were determined from analyzing bed materials in comparative streams having less impacted watersheds. The shear stress results show that the proposed channel should transport a range of materials that include the existing or characteristic (in case of the sand laden channels) channel materials. • 28 r? U Table 10: Summary of Shear Stress Calculations Restoration Reach Proposed Proposed Hydraulic Shear Particle Largest Particle (Sub-Pavement/ Slope Stress Transport Size Radius mm) (mm) Bar) (ft/ft) (ft) (lb/ft) ( (mm) Colorado Shields Upper A Rich Fork 0.28% 1.9 0.33 70 20 20 Lower A - Rich Fork 0.20% 2.4 0.30 60 18 20 Upper B - Primary UT to 0.39% 1 6 0 39 75 22 26 Rich Fork . . Lower B - Primary UT to 0.39% 1.8 0 32 70 19 26 Rich Fork . C - Secondary UT to Rich 0.66% 0.7 0.29 52 17 10 Fork D - Tributary to Secondary 0.66% 0.8 0 33 60 18 19 UT to Rich Fork . 7.3 HEC-RAS Analysis A hydraulic (HEC-RAS) model was performed for purposes of preparing a CLOMR for submission to Davidson County and FEMA and to assess the hydraulics of the existing channels and the proposed restored channel. The hydraulic parameters looked at in detail were water surface elevations, stream power, shear stress, and velocity. The design looked to satisfy FEMA is requirements (a no-rise during the 100-year event) and create stable hydraulic parameters based on published literature for bankfull events. Table 11 below summarizes the hydraulic properties of the existing and proposed channels based on the HEC-RAS model. Detailed HEC-RAS data is provided in Appendix 8. ¦ CLOMR U FEMA requires that a Conditional Letter of Map Revision (CLOMR) be obtained for any modification to the floodway that would result in any (greater than 0.0 foot) increase in the base flood elevation. All requests for CLOMRs must be supported by detailed flood hazard analyses (HEC-RAS) prepared by a qualified professional engineer. The specific data and documentation requirements are contained in Part 65 of the National Flood Insurance Program (NFIP) regulations and in FEMA's application / certification forms. Revision requests should be sent to the FEMA regional office. The CLOMR application for this project is being finalized and, once completed, will be submitted to FEMA and Davidson County. A copy of the application and supporting documentation will be provided to EEP under separate cover. • Hydrologic Trespass The stream was designed to prevent any hydraulic trespass. The restoration provides a channel that causes a no-rise situation during a 100-year event. A summary of the HEC-RAS data is provided in Table 11 below and additional detailed summaries are provided in Appendix 8. 29 0 Table 11: Summarv of Hvdraulic Properties from HEC-RAS Model • • Reach Upper B - HEC-RAS Data Existing Proposed Comment Bankfull Water Surface Elevation (ft) 76708 - 767.87 762.42 - 768.09 Average rise of 0.6 feet Channel Velocity (fps) 2.57-4.37 1.02 -:3.68 Average decrease of 0.4 fps Shear Stress (lb/ft) 0.38-1.01 0.03-0.58 Average decrease of 0.2 Ib/ft2 Stream Power (lb/ft/s) 1.02-4.39 0.03-2.13 Average decrease of 1.0 Ib/ft/s 10 Year Water Surface Elevation (ft) 766.64 - 772.49 756.86 - 771.57 Average decrease of 0.6 feet Channel Velocity (fps) 3.43-7.80 2.98-7.19 Average increase of 0.3 fps Shear Stress (lb/ft) 0.45-2.38 0.20- 1.49 Average decrease of 0.3 Ib/ft2 Stream Power (lb/fUs) 1.54-18.56 0.59-10.74 Average decrease of 1.4 Ib/fUs 100 Year Water Surface Elevation (ft) 767.92 - 773.37 767.68 - 773.23 Average decrease of 0.2 feet Channel Velocity (fps) 4.60-8.98 4.37-9.27 Average increase of 0.8 fps Shear Stress (lb/ft) 0.81 -2.88 0.39-2.25 Average decrease of 0.2 Ib/ft2 Stream Power (lb/fUs) 3.74-25.90 1.72 - 10.83 Average decrease of 0.3 Ib/ft/s Reach Lower B - HEC-RAS Data Existing Proposed Comment Bankfull Water Surface Elevation (ft) 756.12 - 761.69 756.58 - 762.02 Average rise of 0.5 feet Channel Velocity (fps) 2.75-3.82 3.17-3.43 Average decrease of 0.3 fps Shear Stress (lb/ft) 0.37-0.74 0.41 -0.49 Average decrease of 0.2 Ib/ft2 Stream Power (lb/ft/s) 1.03-2.84 1.31 -1.67 Average decrease of 0.9 Ib/ft/s 10 Year Water Surface Elevation (ft) 760.14 - 766.10 759.97 - 765.47 Average decrease of 0.7 feet Channel Velocity (fps) 3.77-9.37 6.54-7.01 Average increase of 0.4 fps Shear Stress (lb/ft) 0.54-3.60 1.23-1.42 Average decrease of 0.4 Ib/ft2 Stream Power (lb/ft/s) 2.04-33.70 8.05-9.98 Average decrease of 2.8 Ib/fUs 100 Year Water Surface Elevation (ft) 761.41 - 767.47 761.08 - 767.12 Average decrease of 0.2 feet Channel Velocity (fps) 4.71 -8.49 6.34-9.76 Average increase of 1.8 fps Shear Stress (lb/ft) 0.79-2.68 1.05-2.58 Average increase of 0.2 Ib/ft2 Stream Power (lb/fUs) 3.74-22.77 6.65- 25.21 Average increase of 4.4 Ib/ft/s Reach Upper A - HEC-RAS Data Existing Proposed Comment Bankfull Water Surface Elevation (ft) 757.79 - 768.09 757.01 - 768.52 Average decrease of 0.2 feet Channel Velocity (fps) 1.74-4.94 2.00-4.74 Average increase of 0.1 fps Shear Stress (lb/ft) 0.12-1.20 0.07-0.88 Average decrease of 0.2 Ib/112 Stream Power (lb/ft/s) 0.22-5.91 0.19-4.19 Average decrease of 0.9 Ib/ft/s 10 Year Water Surface Elevation (ft) 761.12 - 770.52 750.21 - 770.47 Average decrease of 0.5 feet Channel Velocity (fps) 1.60-5.71 1.49- 5.09 Average decrease of 0.4 fps Shear Stress (lb/ft) 0.05-0.37 0.12-0.74 Average increase of 0.2 Ib/ft2 Stream Power (lb/ft/s) 0.09-1.38 0.29- 3.76 Average increase of 1.3 Ib/ft/s 100 Year Water Surface Elevation (ft) 763.37 - 771.75 763.09 - 771.69 Average decrease of 0.2 feet Channel Velocity (fps) 1.21 -3.36 1.27- 2.93 Average increase of 0.1 fps Shear Stress (lb/ft) 0.05-0.68 0.11 - 0.55 Average decrease of 0.1 Ib/ft2 Stream Power (lb/ft/s) 0.06-2.30 0.17 1.61 Average decrease of 0.3 Ib/fUs Reach Lower A - HEC-RAS Data Existing Proposed Comment Bankfull Water Surface Elevation (ft) 755.64 - 757.67 755.66 756.79 Average decrease of 0.4 feet Channel Velocity (fps) 1.34-2.68 0.86 -2.10 Average decrease of 0.5 fps Shear Stress (lb/ft) 0.06-0.30 0.02 -0.21 Average decrease of 0.1 Ib/ft2 Stream Power (lb/ft/s) 0.08-0.80 0.02-0.42 Average decrease of 0.2 Ib/ft/s 10 Year Water Surface Elevation (ft) 758.90 - 761.01 758.97 77-60.09 Average decrease of 0.4 feet Channel Velocity (fps) 1.29-2.69 1.12-2.13 Average decrease of 0.4 fps Shear Stress (lb/ft) 0.04-0.27 0.05-0.15 Average decrease of 0.1 Ib/ft2 Stream Power (lb/ft/s) 0.06-0.72 0.06-0.22 Average decrease of 0.3 Ib/ft/s 100 Year Water Surface Elevation (ft) 761.84 - 763.34 761.99 - 763.06 Average decrease of 0.1 feet Channel Velocity (fps) 1.05-4.26 1.02-3.47 Average decrease of 0.4 fps Shear Stress (lb/ft) 0.03-0.65 0.04-0.25 Average decrease of 0.2 Ib/ft2 Stream Power (lb/ft/s) 0.03-2.79 0.05-0.87 Average decrease of 1.0 Ib/ft/s 30 • 7.4 Stormwater Best Management Practices 7.4.1 Site-Specific Stormwater Concerns The Valley Fields watershed is in a state of increasing development. As a result, increased flows from impervious areas are affecting the project site, thus a stormwater BMP will be utilized at the upper end of Reach D. Currently, the outlet of an existing stormwater culvert discharges into Reach D untreated, resulting in higher pollutant levels and increased velocities in the stream system. 7.4.2 Device Description and Application Routing the stormwater through a pre-formed scour hole / level spreader type BMP before it is discharged into the stream will treat the runoff, resulting in reduced levels of sediment while significantly reducing the energy at the outlet that currently is degrading the stream stability. 7.5 Hydrologic Modification 7.5.1 Narrative of Modifications Hydrologic modifications to the enhancement and restoration areas will result from a combination of raising stream base flow elevations and regarding restoration areas to improve surface water infiltration. Key hydrological components for the project's wetlands include inputs from over-bank flow, • infiltration of ponded waters, and the balance of groundwater inflows and outflows. The frequency and duration of over-bank flows from the smaller more frequent flooding events (bankfull and 0.90 probability events) will be improved by raising the base flow elevations of streams adjacent to the target wetlands. The frequency and duration of over-bank flows from larger flooding events (less than 0.10 probability events) will remain roughly unchanged. The local groundwater elevations, the balance of groundwater inflows and outflows, near where the base flow elevations of the streams have been raised should also rise. These modifications to the stream channels will enhance the hydrology of adjacent wetlands. In the restoration areas, the hydrology is extremely impaired because the infiltration of ponded waters is severely limited. The land surface of these areas has been smoothed, crowned, and the forest cover removed. These areas will be graded to bring the ground elevation to within a foot of the mean growing season water table. The land surface will be reshaped to allow over-bank flows to route though the wetland. The grading also will create microtopography to increase ponded water detention and infiltration times. Revegetation with woody species of the areas that currently are unforested will increase hydraulic roughness of the floodplain leading to an increase in the duration of flooding in these areas. These modifications, shown on the Restoration Plan, should restore wetland hydrology. 7.6 Soil Restoration The soils within the enhancement areas generally have hydric character and will be left in place. In the restoration areas, the soils will be treated to improve hydrologic functionality and promote • reestablishment of woody vegetation. The surface of the restoration area will be disked or plowed to restore hydrological function (see section 7.5.1) and create varied habitats. Initially, the land surface 31 will be set at a grade accessible to flood flows. The grading will bring the crowned area located at the central northern portion of the restoration area to an elevation that is hydrologically connected to flood flows. Only the crown materials will be graded and the underlying wetland soils will not be graded. The land surface will be reshaped to create topography of islands, depression pockets, and interconnecting flats (see Restoration Plan). Within this varied topography, the land surface will be disked to form microtopography. Soils within the riparian and wetland restoration areas will be treated to facilitate the growth and development of plantings. The soils will be ripped prior to planting to break up compacted soils and create a favorable environment for new plantings. Plant nutrients and soil amendments will be applied to the soils as prescribed by the soils test report performed by the North Carolina Department of Agriculture and Consumer Services Agronomic Division for sample sites located throughout the project area (Appendix 13). 7.7 Natural Plant Community Restoration A planting plan was developed to restore natural plant communities to riparian areas and wetlands throughout the site. The planting plan will use reference plant communities discussed in Section 5.4 as a base to design a planting scheme and develop a vegetation list. The enhancement areas are covered with vegetation found in natural communities, but also contain a significant population of nuisance species. Removal and control of the nuisance species will enhance the vegetative component of these wetlands. The planting plan will reestablish a riparian forest on land currently used for hay production and tobacco crops. • The goal of the planting scheme is to establish a riparian community consistent with the reference community. The scheme seeks to accelerate the succesional process leading to a mature riparian community. Re-colonization of cleared riparian habitats characteristically begins with an invasion of pioneer species that creates an environment (e.g. shading) suitable for climax species. To initialize the proposed riparian community, the restoration area will be planted with a mix of pioneer and climax species that have been selected and arranged to meet the following objectives: ¦ Establish mix of shade intolerant canopy and shade tolerant understory species ¦ Provide vegetative source of dominant species ¦ Establish local seed sources for those species less likely to migrate into the restoration area ¦ Provide stability to disturbed or high stress areas The design of a planting plan involves several components. The planting zones have been developed considering site hydrology, soils, and disturbance regimes and are referenced to stable communities within the same climate zone. Each zone has a unique environment that dictates species selection and community structure. The planting list was developed to match the vegetation in the reference community and meet the objectives given above. The planting list also reflects which species are readily available and have a high potential of survival. For a given zone and species, a plant source and planting type (e.g. containerized or bare root) is recommended. A planting schedule was developed so that site preparation and plant installation occur at the most beneficial time and season. After installation, the planting should be verified. The maintenance plan was developed to assure long-term success of the planting. These planting plan components are described below. n 32 • 7.7.1 Planting Zones The planting plan includes 5 zones of distinct vegetative composition and structure. ¦ Zone 1 - Stream Channel (3.0 acres) ¦ Zone 2 - Stream Bank (9.3 acres) ¦ Zone 3 - Riparian (20.9 acres) ¦ Zone 4 - Transitional (4.3 acres) ¦ Zone 5 - Maintained Easements (5.5 acres) The zones are mapped on the Restoration Plan and are described below. Zone 1 - Stream Channel The stream channel zone includes the stream channel from base flow to bankfull. The zone features the steepest slopes (3-8%) of the zones and highest saturation levels. This environment dictates the planting of fast-growing, obligate pioneer species to provide stability to areas at or below bankfull. Zone 2 - Stream Bank The stream bank zone includes the area from the top of bank outward away from the stream 20 feet. It is an area exposed to regular stream flows and frequent soil deposition. The most stressed areas are located on the outside bends of meanders. The banks will be planted with fast-growing, deep-rooted species that will provide biostabilization and shading to the stream • Zone 3 - Riparian The riparian zone includes the area beyond zone 2 to the edge of the floodplain where the hydrology supports bottomland hardwood forest vegetation. The area is flat, frequently flooded, and the water table remains close to the surface. The composition of the vegetation includes a mix of canopy and understory trees. Zone 4 - Transitional The transitional zone includes an approximately 20-foot buffer between zone 3 and an adjacent open area such as a field outside of the conservation easement or on-site utility easement. The planting list consists of a subset of species found in zone 2 consisting of smaller species that tolerate full sun and will eliminate an abrupt boundary between the open field and zone 3. Zone 5 - Maintained Easements Several utility corridors lie within the conservation easement. These areas are maintained regularly and woody vegetation is prohibited. These areas will be planted with native grasses only. 7.7.2 Plant Sources The planting plan utilizes three sources of plants. Two sources-nursery stock and on-site transplants-will be tied directly to the initial planting and will be utilized in numbers to support permit guidelines. The remaining source-recruitment-will be factored into the selection of species in the plant list. The plant list includes a significant portion of species not likely to establish from • natural propagation. 33 • Nursery Stock The planting plan may utilize any of the following nursery stock forms of woody species: bare roots, containerized seedlings, and ball and burlap. Additionally, the planting plan also may use sod or seeds from commercial sources. For the woody forms of vegetation, the planting plan prescribes that they are grown locally under environmental conditions similar to the target environment. On-Site Transplants Within the project area, the restoration sites lie near existing communities with favorable species. In the course of constructing a new channel alignment, some individual plants may need to be removed. The individuals of a target species that are of an appropriate size and age may be transplanted into the restoration area. Recruitment With the improvements to existing hydrology and soil conditions, it is expected that the restoration sites will be populated with species from adjacent communities. The restoration sites will be maintained to keep unwanted species at less than 15% of the total population. 7.7.3 Plant Care and Installation The plantings will be cared for and installed based on guidelines provided in the attached Restoration Plans. When planted properly, bare root seedlings are the most cost-effective and successful plant material. Containerized plantings, live stakes, and other plant materials will be used • based on the needs of the planting zone (e.g. immediate shading). Larger unprotected trees will be guarded using tree shelters that should protect against herbivory and inhibit occupation by beavers. The tree shelters also should accelerate growth. 7.7.4 Plant List The plant list is provided in Restoration Table VII - Designed Vegetative Communities. The plant list is based on recommendations from the North Carolina Stream Restoration Institute (Hall 2001)and the North Carolina Ecosystem Enhancement Program (Smith 2004). 7.7.5 Schedule The planting plan will be scheduled around stream and wetland construction activities and growing season. Special attention will be paid to stabilizing disturbed areas that include newly-constructed channels and temporary construction easements. The final vegetation planting will occur after proper site preparation (described below and in Section 7.6) during the appropriate season. Plantings may be staggered based on surrounding activities. Live stake planting on stream banks (zone 1) will follow closely after channel construction to provide immediate stabilization. On-site transplants should be planted immediately after removal from their existing habitat. Planting of zones 2-4 should occur from late winter to early spring (February 14 to April 15) after construction to minimize or eliminate threats from the construction; exotic vegetation treatment; unpredictable weather; and beaver activity. Any treatment of problem areas should also occur between later winter and early spring. 34 • 7.7.6 Stabilization Immediately after construction, the contractor will seed the stream banks and all disturbed areas with permanent and temporary seed mixes. Permanent seeding will be completed in conjunction with construction with temporary seeding applied per Land Quality Section requirements. Within the stream channel (Zone 1), the contractor will plant pioneer species that provide immediate bank stabilization. The contractor will plant live stakes and bare roots around structure installations and the outside of meander bends to provide an area of high density root mass. Coir fiber matting and live stakes will be used along the entire reach of the restored channels to provide stabilization until vegetation can be established. 7.7.7 Site Preparation Prior to planting the riparian buffer, efforts will be made to eradicate fescue and invasive plants such as multiflora rose (Rosa multiflora), Chinese privet (Lingustrum sineses), and Japanese honeysuckle (Lonicera japonica). These efforts should include herbicide use during the spring and a follow-up spraying in early fall to eliminate any fescue that was not killed in the spring. A permanent seed mix can be used after application of the pre-emergent. Woody planting can follow during the dormant season. 7.7.8 Planting Review After the final planting is complete, the planting supervisor will verify that the site was planted properly though inspection of stem counts and condition. The planting contractor will be responsible • for replacing damaged plantings. 7.7.9 Monitoring and Maintenance Monitoring will verify that the restoration area is meeting restoration goals. Damaged plantings will be removed and replanting will occur if the planting survival rate fails to meet restoration goals numbers. If monitoring indicates that an area is trending towards greater than 15% coverage by nuisance vegetation, that area will be treated to remove the nuisance vegetation. 8.0 Performance Criteria 8.1 Stream Success Criteria The stream geometry will be considered successful if the cross-section geometry, profile, and sinuosity are stable or reach a dynamic equilibrium. It is expected that there will be minimal changes in the designed cross sections, profile, and/or substrate composition. Changes that may occur during the monitoring period will be evaluated to determine if they represent a movement toward a more unstable condition (e.g. down cutting, erosion, etc.) or are minor changes that represent an increase in stability (e.g. settling, vegetative changes, coarsening of bed material, etc.). An initial, though not exclusive, indicator of success will be adherence to design or reference ratios of stream geometry found in the morphological table (Restoration Table IV) or in comparable and stable reference systems. • 35 • Deviation from the design ratios will not necessarily denote failure as it is possible to maintain stability and not stay within the design geometry. Additionally, determination of true bankfull will be difficult until the stream has had adequate flooding events to create strong bankfull indicators. The following key indicators of stability provide a more complete picture of stream stability: ¦ Stream Type: Maintenance of the design stream type or progression or conversion to stable stream type such as B, C, or E will indicate stability ¦ Bank Height Ratio: Bank height ratio between 1.0 and 1.1 will indicate flood flows have access to the active floodplain and that higher flows do not apply excessive stresses to stream banks The nature of the watershed presents challenges to stream restoration. The contributing watersheds lie within a rapidly developing region. The urbanizing watershed's runoff character will continue to change as the nature of the land cover shifts to less permeable surfaces. The hydrograph will shift such that bankf ill flooding events will become more frequent and peak discharges will be higher. The cross sections have been designed with bankfull benches to account for some shifting in bankfull discharges. Upstream construction activities driven by land development likely will lead to episodic sediment pulses sent downstream through the stream network. Additionally, erosion of upstream unstable stream banks will persistently contribute sediment to the project reaches. The designer anticipates that the excess sediment will either be routed though the project area or deposited in target areas such as point bars and the floodplain. Minor sedimentation of pools and glides may occur. The pools are designed to be over dug to account for some sedimentation of pools and glides. . If a large storm event occurs before the woody vegetation has established, isolated bank erosion may occur in sections where the flood prone area has been restricted due to topography and/or utility easements. Areas of bank erosion should be repaired as necessary. 8.2 Wetland Success Criteria The success of wetland enhancement / restoration will be measured by comparing the restored wetlands with similar, more functional wetlands with respect to vegetation, soils, and hydrology. Success criteria are summarized in the following sections. 8.2.1 Hydrology The minimum requirement to judge establishment of wetland hydrology will be adherence to USACE guidelines (United States Army Corps of Engineers 1987) including saturation of the upper surface of the soils for a minimum period of consecutive days during the growing season. Further success of the restoration and enhancement of wetland hydrology will be measured by improvements to the frequency and duration of flood flows, groundwater levels, flood storage, and surface water infiltration. Gauges will measure these components and the measurements will be compared to baseline measures taken prior to restoration activities. The following changes from baseline conditions will indicate enhancement or restoration of wetland hydrology: ¦ Increase in frequency and duration of flood flows ¦ Rise in groundwater elevations • ¦ Increase in flood storage 36 ¦ Increase in volume of surface water infiltration 8.2.2 Vegetation The prevalent vegetation should consist of macrophytes that typically are adapted for life in saturated soil conditions. These species should have the ability to grow, compete, reproduce, and persist in anaerobic soil conditions. A reduction in the percentage of nuisance vegetation in wetlands areas with existing vegetation to less than 15% will indicate enhancement of wetland vegetation. For the restoration areas, study plots showing that the composition and density of vegetation in the restoration areas that compares closely to the reference areas will indicate restoration success for vegetation. 8.2.3 Soil A primary measure of the enhancement and restoration of wetlands soils will be the establishment of hydric character as defined by USACE guidelines (United States Army Corps of Engineers 1987). Soil enhancement and restoration also may be inferred based on successful enhancement and restoration of wetland hydrology and vegetation. 8.3 Vegetation Success Criteria The success of riparian and wetland vegetation planting will be gauged by stem counts of planted species. Stem counts of over 320 trees per acres after 3 years, 288 trees per acre after 4 years, and 260 trees per acre after 5 year will be considered successful. Photos taken at established photo points . should indicate maturation of riparian vegetation community. 8.4 Schedule /Reporting The monitoring plan to evaluate the success of the stream restoration project is based on guidance provided by The Stream Mitigation Guidelines disseminated by the United States Corps of Engineers - Wilmington District and recommendation from the Ecosystem Enhancement Program. The collection and summarization of monitoring data will be conducted in accordance with the most current version of the EEP documents entitled "Content, Format, and Data Requirements for EEP Monitoring Reports" Upon completion of the restoration project, an as-built survey will be conducted that documents the following conditions: ¦ Geomorphology (dimension, pattern, and profile) ¦ Channel materials ¦ Channel stability and in-stream structure functionality • Wetland hydrology ¦ Vegetation (stream and wetland) The survey of channel dimension will consist of permanent cross sections placed at approximately two cross sections (one riffle and one pool) per unique stream segment. The cross sections will • represent approximately 50% riffles and 50% pools. Annual photographs showing both banks and upstream and downstream views will be taken from permanent, mapped photo points. The survey of 37 • the longitudinal profile will represent distinct areas of restoration and will cover a cumulative total of 3,000 linear feet of channel. Newly-constructed meanders will be surveyed to provide pattern measurements. Channel material measurements will be collected by using pebble counts for at least six of the permanent cross sections. The entire restored length of stream will be investigated for channel stability and in-stream structure functionality. Any evidence of channel instability will be identified, mapped, and photographed. All structures will be inventoried for functionality and photographed. Wetland hydrology will be measured using groundwater wells that were set up before restoration efforts began. The wells will sample groundwater elevations continuously throughout the monitoring period. The success of vegetation plantings will be measured through stem counts. Permanent quadrants will be used to sample the riparian buffer and restoration wetlands. The primary quadrant will cover 100 square meters for tree counts. Within the primary quadrant, a 25-square-meter quadrant will be placed to count shrubs, and a 1-meter quadrant will be placed to measure herbaceous coverage. During the counts, the health of the vegetation will be noted. In addition to stem counts, the samples will inventory species to allow for comparison between the reference and restoration wetlands and track the population of the nuisance species. The vegetation survey will occur during the growing season. Permanent photo points will be set up for each quadrant. The monitoring will occur annually for five years. The monitoring period should include two separate years with bankfull events. Bankfull events will be verified using an installed crest gauge that will be inspected during each monitoring visit. If a bankfull event has not been documented by . the end of the second year of monitoring, a mandatory quarterly check will be required. If there are not two bankfull events, the monitoring period may be extended at the discretion of the Corps of Engineers, Raleigh Regulatory Field Office Project Manager and the 401-Wetlands Unit. Monitoring reports will be submitted during years 1-5. • 38 10 9.0 References Cowardin, Lester M., Virginia Carter, et al. (1979). Classification of Wetlands and Deepwater Habitats of the United States. United States Department of the Interior. Davidson County Natural Resource Conservation Service (1994). Soil Survey of Davidson County, North Carolina. S. C. S. United State Department of Agriculture. Federal Emergency Management Agency - National Flood Insurance Program (2000). North Carolina Flood Insurance Rate Map, Community Panel Number 37057CO131 D effective September 7, 2000. Federal Emergency Management Agency (2000). Flood Insurance Study Davidson County, North Carolina and Incorporated Areas. Hall, Karen (2001). Recommended Native Plant Species for Stream Restoration in North Carolina. Raleigh, NC, North Carolina Stream Restoration Institute NCSU. Harman, William A., Gregory D. Jennings, et al. (1999). Bankfull Hydraulic Geometry Relationships for North Carolina Streams. Wildland Hydrology Symposium, Bozeman, MT, AWRA. • North Carolina Department of Environment and Natural Resources - Division of Water Quality: Planning Branch (2003a). North Carolina Water Quality Assessment and Impaired Waters List (2002 Integrated 305(b) and 303 (d) Report). North Carolina Department of Environment and Natural Resources - Division of Water Quality: Planning Branch (2003b). Yadkin-Pee Dee River Basinwide Water Quality Plan. Robert R. Mason, Jr., Luis A. Fuste, et al. (2002). The National Flood-Frequency Program-Methods for Estimating Flood Magnitude and Frequency in Rural and Urban Areas in North Carolina, 2001. U. S. G. Survey. Rosgen, David L. (2001). A Stream Channel Stability Assessment Methodology. Seventh Federal Interagency Sedimentation Conference. Reno, NV. w: 18-26. Schafale, Michael P. and Alan D. Weakley (1990). Classification of the Natural Communities of North Carolina, Third Approximation, NC Natural Heritage Program, Division of Parks and Recreation, NC Department of Environment, Health, and Natural Resources. Smith, Cherri L. (2004). Guidelines for Riparian Buffer Restoration. Raleigh, NC, North Carolina Department of Environmental and Natural Resources - Ecosystem Enhancement Program. United States Army Corps of Engineers (1987). Corps of Engineers Wetlands Delineation Manual. is W. E. Station, Environmental Laboratory. 39 • • a- yS i 0 Table I: Proiect Enhancement / Restoration Strnctnre find Ohii-etivpc Assessment Reach' Station Mitigation Priority Existing Designed (Design Reach) Range Type Approach Linear Linear Comments Ros en Footage Footage A-2 --> A-4 (Upper A) 50+00- Rich Fork 82+10 Restoration 1,11 3,100 3,210 Restoration of pattern, profile, and A-1 (Lower A) 81+00- dimension. Pattern limited in some Rich Fork 106+64 Restoration 1,11 2,560 2,550 areas due to utility easements. B (Upper B) 150+00- Priority II in upper sections (to Prima UT to Rich Fork 163+25 Restoration 1,11 1,240 1,330 avoid hydrologic trespass) B (Lower B) 163+25 - transitioning to Priority I in lower Prima UT to Rich Fork 179+73 Restoration I, II 1,310 1,650 sections. C 10+00- Restoration of aggrading channel Secondary UT to Rich Fork 25+64 Restoration II 1,560 1,600 confined on both sides by utility easements. D 250+00- Restoration of pattern, profile, and Tributary to Primary UT to Rich Fork 252+37 Restoration I 240 300 dimension. Adjacent, offline BMP will treat stormwater runoff. J (Pond) 200+00- Restoration III 118 211 Conversion of over-steep run to Tributary to Primary UT to Rich Fork 201+18 stable step-pool system. 0 0 0 Table I: Project Enhancement / Restoration Structure and Objectives Wetland ID Station Mitigation Existing Designed Ran e Type Acreage Acreage 2 Comments Restoration of riverine wetland at Wetland A-5 73+00- Restoration -- 5 7 confluence of Rich Fork and 78+00 . Primary Tributary. Restoration of soils, hydrology, and vegetation.. Wetland B-1 167+50- Enhancement -- 0 1 0 1 Revegetation of cleared area and 169+50 . . enhancement of hydrology. Wetland B-2 161+50- Enhancement -- 0 7 0 4 Revegetation of cleared area and 167+25 . . enhancement of hydrology Wetland B-3 159+50- Enhancement -- 0 2 08 Revegetation of cleared area and 161+00 . enhancement of hydrology. Wetland D-1 250+00- Enhancement -- 0 2 0 2 Revegetation of cleared area and 252+00 . . enhancement of hydrology. Wetland A-6 66+50- Enhancement -- 1 7 1 7 Removal of invasive species. 72+75 . . Wetland A-4 71+50- Enhancement -- 1 8 1 8 Enhancement of hydrology and 83+00 . . reve etion of surroundin area. Wetland A-3 84+50- Enhancement -- 0 2 0 2 Enhancement of hydrology and 86+00 . . reve<getion of surrounding area ' See Figure 4 for reach locations and Figure 5 for wetland locations. The assessment reaches were grouped into design reaches based on similar geomorphology, valley type, and design objectives. 2 The design shifts some confluences of Upper A and Lower B either upstream or downstream. This contributes to differences between existing and proposed stream lengths. • 0 Table IL• Drainage Area and Stream Classification Reach Drainage Area miz Surface Water Classification Stream Order Rich Fork (Reach A) 6.5 C 3 Primary UT to Rich Fork 2.3 C 2 (Reach B) Secondary UT to Rich Fork 0 2 C 1 (Reach C) . Tributary to Primary UT to 2 C 1 Rich Fork (Reach D) Table III: Existing Land Use / Land Cover of the Waterchi-d Land Cover Acreage Percentage of Total Coverage Forested 1,786 43% Developed (Residential/Industrial/Commercial) 1,462 35% Herbaceous Planted / Cultivated 879 22% Table IV: Morphological Table 0 • VARIABLES Reach A-4 Rich Fork Reach A3 Rich Fork Reach A-2 Rich Fork D Station 50+00 - 62+50 62+50 - 71+85 71+85 - 81+00 Associated Reference Reach' 1. Stream Type r Ros en G5c->F5 G5 Incised E5 2. Drainage Area i (s q. mile 3.4 3.7 4.0 3. Bankfull Width Mean: 18.2 Mean: 14.6 Mean: 18.5 Mean: (Wbu) Range: Range: Range: Range: 4. Bankfull Mean Mean: 1.7 Mean: 2.8 Mean: 2.7 rMean: depth (dbu) Range: Range: Range: rRange: 5. i dth/De thRatio Width/Depth Mean: 10.7 Mean: 5.2 Mean: 6.9 Mean: /?,? I (Wbddbu) Range: Range: Range: Range: 6. Bankfull cross-sectional Mean: 30.9 Mean: 40.4 Mean: 49.6 Mean: Area (Abkf) Ran e: Range: Range: Range: 7. Bankfull Mean Velocity Mean: 6.9 Mean: 5.7 Mean: 4.9 Mean: (Vba) Range: Range: Range: Range: 8. Bankfull Discharge, cfs Mean: 213.1 Mean: 230.2 Mean: 241.1 Mean: (Qba) Range: Range: Range: Range: 9. Bank-full Maximum Depth Mean: 1.9 Mean: 3.4 Mean: 3.5 rMean: (dmj Range: Range: Range: rRange: 10. Maxd?b/dbu Mean: 1.1 Mean: 1.2 Mean: 1.3 Mean: ratio Range: Range: Ran e: 11. Low Bank Height to max Mean: 2.8 2.1 Mean: 1.5 Mean: dba ratio Range: Range: rRange: 12. Width of Flood Prone Mean: 20.8 R 23.7 Mean: 126.8 Mean: Area(Wrp,) Range: Range: Range: Range: 13. Entrenchment Ratio Mean: 1.1 1.6 Mean: 6.9 Mean: (Wm?bM) Range: Range: rRange: 14. Meander Length Mean: 143 Mean; 143 Mean: 138 rMean: (La) Range: 76 196 Range: 76 196 Range: 56 228 rRange: 15. Ratio of Meander Length to Mean: 7.9 Mean: 9.8 Mean: 7.5 Mean: BankfullWidth (L„JWba) Range: 4.2 10.8 Range: 5.2 13.4 Range: 3.1 12.3 Range: 16. Radius of Curvature Mean: 72 Mean: 72 Mean: 45 Mean: (Rp) Range: 17 248 Range: 17 248 Range: 14 100 rRange: 17. Ratio of Radius of Curvature Mean: 4.0 Mean: 4.9 Mean: 2.4 Mean: to Bankfull Width (RalWba) Range: 0.9 13.6 Range: 1.2 17.0 Range: 0.8 5.4 Range: 18. Belt Width Mean: 59 Mean: 59 Mean: 61 Mean: bit) Range: 36 79 Range: 36- T 79 Range: 47 73 rRange: 19. Meander Width Ratio Mean: 3.2 Mean: 4.0 Mean: 3.3 rMean: (WbWWbe) Range: 270 4.3 Range: 2.5 5.4 Range: 2.5 3.9 Range: 20. Sinuosity k Mean: 1.1 Mean: 1.0 Mean: 1.1 Mean: Stream Length / Valle Length) Range: Ran e: Range: Range: 21. Valley Slope (Svauey) Mean: 0.0033 Mean: 0.0040 Mean: 0.0028 rMean: Milt) Range: Ran e: Range: Range: 22. Average Stream Sloe Mean: 0.0030 Mean: 0.0040 Mean: 0.0025 Mean: (Sao (S.11i /k) Range: Range: Range: Range: 23. Riffle Sloe Mean: 0.0030 Mean: 0.0030 Mean: 0.0035 Mean: (Sao) Range: 0.0026 0.0033 Range: 0.0026 0.0033 Range: 0.0027 0.0044 rRange: 24. Ratio of Riffle Sloe to Avg. Mean: 1.0 Mean: 0.8 Mean: 1.4 Mean: Slope (SaaelSas) Range: 0.9 1.1 Range: 0.7 0.8 Range: 1.1 1.7 Range: 25. Pool Slope Mean: 0.0002 Mean: 0.0002 Mean: 0.0002 Mean: (Span) Range: 0.0001 0.0003 Range: 0.0001 0.0003 Range: 0.0001 0.0003 rRange: 26. Ratio of Pool Slope to Avg. Mean: 0.1 Mean: 0.1 Mean: 0.1 Mean: Slope(Sp.JS.4 Range: 0.0 0.1 Range: 0.0 0.1 Range: 0.0 0.1 Range: 27. Maximum Pool Mean: 2.6 Mean: 2.6 Mean: 2.9 Mean: Depth(dppa? Range: 2.6 2.6 Range: 2.6 2.6 Range: 2.5 3.2 Range: 28. Ratio of Pool Depth to Ave. Mean: 1.5 Mean: 0.9 Mean: 1.1 rMean: Depth (dpoa/dao Range: Range: Range: Range: 29. Pool Width Mean: 18.5 Mean: 18.5 Mean: 19.8 Mean: (Wpad) Range: Range: Range: Range: 30. Ratio of Pool Width to Mean: 1.0 Mean; 1.3 Mean: 1.1 Mean: BankfullWidth (Wpmn,?I f"blf) Range: Range: rRange: 31. Pool Area Mean: 36.9 36.9 Mean: 32.7 rMean: (Apaa? Range: Range: Range: 32. Ratio of Pool Area to Mean: 1.2 F 0.9 Mean: 0.7 Mean: Bankfull Area (ApaufAbu) Range: Rane Range: Range: 33. Pool to Pool S acin Mean: 42 42 Mean: 77 Mean: Ran e: 30 54 30 54 Range: Range: 34. Ratio of Pool to Poo l Spacing Mean: 2.3 Mean; 2.9 Mean: 4.2 Mean: Ito Bankfull Width p-p/Wbkf) Range, 1.6 3.0 Ran e; 2.1 3.7 Ran e: Ran a:_ Notes ? Bankfull Velocity =Discharge (Crass-Sectional Area 2 Bankfull Discharge determined from NC SRI Piedmont Rural Regression Curve for the given drainage areas s Limited survey information available "Design - To be Filled s Design values based on reference reach values; regional curves; regime equations; and professional judgement. The onsite upper reference was the primary reference supplemented with values of onsite lower. The offsite reference provided reference values for confined sections of stream and supplemented step-pool systems. T:Ipn1011795020 VFF DesignlRestoralion StudieslValley Fields Farm Expanded Stream Morph Table.xls Revised: 0210212006 L-1 • • Table IV: Morphological Table VARIABLES Reach C-1 Tributary to Rich Fork Braided Reach Tributary to ic--------" --------- Reach -1 Tributary to Rich I p - Reach J-11 Tributary to Ric J- I Fork Ditch s'< DESIGN REACH I Forks I DESIGN REACH I Forks j DESIGN REACH' I Station 10+00.25+64 I I I I I 30+00.34+10 ' 100+00-116+03 ' 250+00.252+37 ' 200+00-202+98 200+00-201+18 ' 350+00.352+11 ' Associated Reference Reach' Onsite Upper Onsite upper Offsite Offsite Onsite Lower 1. Stream Type Ros en Incised B5 B5-41`5 I C5c-->E5 I Incised B5 I B5c-+C5 I G I BA 2. Drainage Area I I ( I I (sq. mile 0.14 0.02 0.16 0.19 0.19 0.11 0.11 3. Ba nkfullWidth Mean: 7.0 Mean: 5.0 'Mean: 11.5 'Mean: 5.3 'Mean: 10.2 'Mean: 6.5 'Mean: 8.5 ' ? p? 1 •'bM) Range: Range: 'Range: 'Range: 'Range: 'Range: 'Range: ' 4. Bankfull Mean Mean: 0.6 Mean: 0.3 Mean: 0.7 Mean: 1.0 Mean: 0.8 Mean: 1.4 'Mean: 0.5 ' depth(dbu) Range: Range: Range: Range: Range: Range: Range: 5. Width/Depth Ratio Mean: 11.7 Mean: 16.7 rMean; 17.2 rMean: 5.3 rMean: 13.6 rMean: 4.6 rMean: 17.0 i (WbkPdbu) Range: Range: Range: 13.0 18.0 rRange: Range: 13.0 18.0 IRange: Range: 6. Bankfull cross-sectional Mean: 3.3 Mean: 1.5 Mean: 7.8 Mean: 5.1 Mean: 7.6 Mean: 9.0 Mean: 4.3 Area (Abkf) Range: Ran e: Range: Range: Range: Ran e: Ran e: r 7. Bankfull Mean Velocity' Mean: 6.5 Mean: 6.5 Mean: 3.1 Mean: 5.3 Mean: 3.5 Mean: 2.0 Mean: 4.2 (Vbu) Range: Range: Range: ,Range: Range: Range: Range: 8. Bankfull Discharge, cfs2 Mean: 21.6 Mean: 23.8 Mean: 24.2 Mean: 26.9 Mean: 26.6 Mean: 18.2 Mean: 18.2 (Qbu) Range: Range: Range: ,Range: Range: Range: Range: 9. Bankfull Maximum Depth Mean: 0.9 Mean: 0.4 Mean: 1.2 Mean: 1.2 Mean: 1.2 Mean: 1.8 Mean: 1.1 (d...) Range: Range: (Range: 0.9 1.2 (Range: (Range: 1.0 1.2 (Range: (Range: 10. Maxddaldbu Mean: 1.5 Mean: 1.3 Mean: 1.8 Mean: 1.2 Mean: 1.6 Mean: 1.3 Mean: 2.2 ratio Range: Range: Range: 1.3 1.8 Range: Range: 1.3 1.6 Range: Range: 11. Low Bank Height to max Mean: 1.0 Mean: 2.5 (Mean: 1.0 (Mean: 1.7 (Mean: 1.0 (Mean: 1.8 (Mean: 1.0 dburatio Range: Range: (Range: (Range: (Range: (Range: (Range: 12. Width of Flood Prone Mean: 14.1 Mean: 8.9 Mean: 25.3 Mean: 9.3 Mean: 22.4 Mean: 9.1 Mean: Area(WrJ Range: T_ Range: (Range: (Range: I (Range: I (Range: _J (Range: 13. Entrenchment Ratio Mean: 2.0 Mean: 1.8 Mean: 2.2 Mean: 1.8 Mean: 2.2 Mean: 1.4 Mean: (Wrya/••bu) Range: Range: Range: 'Range: 'Range: 'Range: 'Range: ' 14. Meander Length Mean: 68 Mean: 37 Mean: 115 Mean: 64 Mean: 102 Mean: Mean: (LM) Range: 66 70 Range: 'Range: 92 138 'Range: 63 65 'Range: 82 122 'Range: 'Range: ' 15. Ratio of Meander Length to Mean: 9.7 Mean: 7.4 'Mean: 10.0 'Mean: 12.1 'Mean: 10.0 'Mean: 'Mean: ' Bankfull Width (L /WbM) Range: Range: Range: 8.0 12.0 'Range: 11.9 12.3 'Range: 8.0 12.0 'Range: Range: 16. Radius of Curvature Mean: 45 Mean: 84 Mean: 35 'Mean: 33 Mean: 31 'Mean: 7 'Mean: ' (Rc) Range: 16 112 Range: 9 233 IRange: 23 46 'Range: 14 53 Range: 20 41 Range: 3 10 'Range: 17. Ratio of Radius of Curvature Mean: 6.4 Mean: 16.8 Mean: 3.0 Mean: 6.2 Mean: 3.0 Mean: 1.1 Mean: to Bankfull Width (RdWbu) Range: Range: IRange: 2.0 4.0 rRange: 2.6 10.0 IRange: 2.0 4.0 rRange: rRange: r 18. Belt Width Mean: 134 Mean: 190 Mean: 46 Mean: 5 rMean: 38 Mean: 22 Mean: , (Wb„) Range: 79 208 Range: 97 250 !Range: 33 58 Range: Range: 29 47 Range: Range: , 19. Meander Width Ratio Mean: 19.1 Mean: 38.0 ,Mean: 4.0 ,Mean: 0.9 Mean: 3.7 Wean: 3.4 Mean: (WbiMba) Range: Range: ,Range: 2.9 5.0 Range: Range: 2.8 4.6 Range: Range: , 20. Sinuosity k Mean: 1.1 Mean: 1.1 Mean: 1.1 Mean: 1.0 Mean: 1.1 Mean: 1.0 Mean: 1.1 Stream Length I ValleLength) Range: Range: Ran e: Range: Ran e: Range: Ran e: 21. Valley Slope (S,bey) Mean: 0.0110 Mean: 0.0073 (Mean: 0.0073 (Mean: 0.0071 (Mean: 0.0071 (Mean: 0.1190 (Mean: 0.1190 (ft/ft) Range: Ran e: (Ran e: Range: (Range: (Ran e: (Range: 22. Average Stream Sloe Mean: 0.0100 Mean: 0.0066 Mean: 0.0066 Mean: 0.0071 Mean: 0.0065 Mean: 0.1190 Mean: 0.0080 (Sony)=(S?aoaVk) Range: Range: Range: Range: Range: Range: (Range: j 23. Riffle Slope Mean: Mean: Mean: 0.0086 Mean: Mean: 0.0097 Mean: 0.1190 Mean: 0.0192 (S O Range: Range: Range: 0.0086 0.0129 'Range: Range: 0.0097 0.0213 'Range: 1 Range: 24. Ratio of Riffle Sloe to Avg. Mean: Mean: Mean: 13 Mean: Mean: 1 1.5 Mean: 1.0 Mean: 2.4 Slope(SflmalS.,g) Range: Range: 'Range: 1.3 1.5 'Range: 'Range: 1.5 3.3 'Range: 'Range: 1.5 3.3 ' 25. Pool Slope Mean: Mean: 'Mean: 0.0013 'Mean: 'Mean: 0.0013 'Mean: 'Mean: 0.0020 ' (S?) Range: Range: Range: 0.0007 0.0053 'Range: Range: 0.0006 0.0052 'Range: Range: 0.0008 0.0032 ' 26. Ratio of Pool Slope to Avg. Mean: Mean: Mean: 0.2 Mean: Mean: 0.2 Mean: Mean: 0.3 Slope(Sp?dSa„) Range: Range: Range: 0.1 0.8 'Range: Range: 0.1 0.8 'Range: 'Range: 0.1 0.4 27. Maximum Pool Mean: Mean: rMean: 1.3 rMean: 1.1 rMean: 1.5 rMean: rMean: 1.7 r Depth (dnw) Range: Range: rRange: 0.9 1.7 rRange: rRange: 1.0 1.9 rRange: rRange: r 28. Ratio of Pool Depth to Avg. Mean: Mean: Mean: 2.0 Mean: 1.1 Mean: 2.0 Mean: Mean: 3.3 Depth (dp_/da,) Range: Range: rRange: 1.3 2.5 Range: rRange: 1.3 2.5 rRange: rRange: , 29. Pool Width Mean: Mean: ,Mean: 15.0 ,Mean: 10.5 Mean: 13.3 Mean: Mean: 12.5 (Wnao1) Range: Range: Range: 11.5 17.3 ,Range: Range: 10.2 15.3 Range: Range: 8.5 12.8 , 30. Ratio of Pool Width to Mean: Mean: Mean: 1.3 Mean: 2.0 Mean: 1.3 Mean: Mean: 1.5 Bankfull Width (WpW/Wba) Range: Range: Range: 1.0 1.5 Range: Range: 1.0 1.5 Range: Range: to 1.5 31. Pool Area Mean: Mean: Mean: 10.1 Mean: Mean: 9.9 Mean: Mean: 12.9 (Ap.) Range: Range: (Range: 5.5 12.5 (Range: (Range: 5.3 12.2 (Range: IRange: 32. Ratio of Pool Area to Mean: Mean: Mean: 1.3 (Mean: (Mean: 1.3 Mean: (Mean: 3.0 Bankfull Area (Apo /Abu) Range: Range: IRange: 0.7 1.6 (Range: IRange: 0.7 1.6 !Range: IRange: I 33. Pool to Pool Spacing Mean: Mean: (Mean: 69 (Mean: (Mean: 41 (Mean: - (Mean: 19 Range: Ran e: Ran s: 46 92 Pangs: Range: I 1' 41 51 Fa e: Ran e: 34. Ratio of Pool to Pool Spacing Mean: Mean: 'Mean: 6.0 'Mean: 'Mean: 4.0 'Mean: Mean: 2.2 to Bankfull Width (p-plWbkO Range: Ran e: 'Range_ ,_ 4.0 _ 8.0, !Rang;: _--ham iRan e: Ran e _ _ 13 _ 3_5_ j Notes ' Bankfull Velocity= Discharge 1 Cross-Sectional Area 2 Bankfull Discharge determined from NC SRI Piedmont Rural Regression Curve for the given drainage areas 3 Limited survey information available "Design -To be Filled 'Design - Step pool system 6 Design values based on reference reach values; regional curves; regime equations; and professional judgement. The onsllo upper reference was the primary reference supplemented with values of onsite lower. The offsite reference provided reference values for confined sections of stream and supplemented step-pool systems. T:Ipn1011795020 VFF DesignlRestomtion StudiesWalley Fields Farm Expanded Stream Morph Table.xls Revised: 0210212006 • • • Table V: BEHI/NBS and Sediment Export Estimate for Proiect Site Streams Reach BEH I NBS Erosion Bank Bank Erosion E rosion Erosion Rate' Len- th Height ft/ r ft ft ft/ r d/ r tons/ r Al H H 0.40 165 5 330.0 12.2 15.9 Al H H 0.40 55 5.5 121.0 4.5 5.8 Al H H 0.40 29 6.5 75.4 2.8 3.6 Al H L 0.15 58 5 43.5 1.6 2.1 Al H L 0.15 144 6.5 140.4 5.2 6.8 Al H L 0.15 56 7.5 63.0 2.3 3.0 Al H M 0.28 50 5 70.0 2.6 3.4 Al H M 0.28 139 6.5 253.0 9.4 12.2 Al H M 0.28 57 7.5 119.7 4.4 5.8 Al H VH 0.45 74 7.5 249.8 9.3 12.0 Al L L 0.03 294 5 36.8 1.4 1.8 Al L M 0.12 282 5.5 186.1 6.9 9.0 Al M H 0.18 97 5 87.3 3.2 4.2 Al M H 0.18 187 5.5 185.1 6.9 8.9 Al M H 0.18 518 7.5 699.3 25.9 33.7 Al M L 0.06 74 5 20.4 0.8 1.0 Al M L 0.06 379 7.5 156.3 5.8 7.5 Al M M 0.18 105 5 94.5 3.5 4.6 Al M M 0.18 585 7.5 789.8 29.3 38.0 Al M VL 0.05 69 7.5 25.6 0.9 1.2 Al VH H 0.85 583 7.5 3716.6 137.7 178.9 Al VH L 0.40 370 7.5 1110.0 41.1 53.4 Al VH M 0.44 376 7.5 1240.8 46.0 59.7 Al VH VH 1.00 108 7.5 810.0 30.0 39.0 Al VH VL 0.36 5f; 7.5 156.6 5.8 7.5 Investigate d Stream Length 2450.00 Yearly tons of erosion per linear foot 0.212 A2 H H 0.40 358 5.1 730.3 27.0 35.2 A2 H L 0.15 138 5.1 105.6 3.9 5.1 A2 H M 0.28 106 5.1 151.4 5.6 7.3 A2 L L 0.03 59 7.5 11.1 0.4 0.5 A2 M H 0.18 66 5.1 60.6 2.2 2.9 A2 M H 0.18 275 7.5 371.3 13.8 17.9 A2 M L 0.06 70 5.1 19.6 0.7 0.9 A2 M L 0.06 78 7.5 32.2 1.2 1.5 A2 M M 0.18 29 7.5 39.2 1.5 1.9 A2 VH H 0.85 119 7.5 758.6 28.1 36.5 A2 VH L 0.40 76 7.5 228.0 8.4 11.0 A2 VH M 0.44 218 7.5 719.4 26.6 34.6 A2 VH VH 1.00 133 7.5 997.5 36.9 48.0 Investigate d Stream Length 860.00 Yearly tons of erosion per linear foot 0.237 A3 H H 0.40 430 5.2 894.4 33.1 43.1 A3 H L 0.15 119 5.2 92.8 3.4 4.5 A3 H M 0.28 189 52 275.2 10.2 13.2 A3 M H 0.18 359 5.2 336.0 12.4 16.2 A3 M L 0.06 424 5.2 121.3 4.5 5.8 A3 M M 0.18 260 5.2 243.4 9.0 11.7 Investigated Stream Length 900.00 Yearly tons of erosion per linear foot 0.105 • • Reach BEHI NBS Erosion Bank Bank Erosion E rosion Erosion Rate' Length Height ft/ r ft ft ft/ r d/ r tons/ r A4 L L 0.03 60 4.5 6.8 0.3 0.3 A4 L M 0.12 78 4.5 42.1 1.6 2.0 A4 L VH 0.09 21 4.5 8.5 0.3 0.4 A4 M H 0.18 524 4.5 424.4 15.7 20.4 A4 M H 0.18 137 5 123.3 4.6 5.9 A4 M L 0.06 366 4.5 90.6 3.4 4.4 A4 M L 0.06 84 5 23.1 0.9 1.1 A4 M M 0.18 556 4.5 450.4 16.7 21.7 A4 M VH 0.30 147 4.5 198.5 7.4 9.6 A4 VH H 0.85 13 4.5 49.7 1.8 2.4 A4 VH H 0.85 201 5 854.3 31.6 41.1 A4 VH L 0.40 104 5 208.0 7.7 10.0 A4 VH VH 1.00 24 4.5 108.0 4.0 5.2 A4 VH VH 1.00 121 5 605.0 22.4 29.1 Investigate d Stream Le ngth 1230.00 Yearly ton s of erosion per linear foot 0.125 BI H H 0.40 6119 7 1733.2 64.2 83.5 B1 H L 0.15 114 7 119.7 4.4 5.8 B1 H M 0.28 1031 7 2020.8 74.8 97.3 B1 H VH 0.45 459 7 1445.9 53.6 69.6 B1 H VL 0.14 200 7 189.0 7.0 9.1 B1 M H 0.18 506 7 637.6 23.6 30.7 B1 M L 0.06 186 7 71.6 2.7 3.4 B1 M M 0.18 779 7 981.5 36.4 47.3 B1 M VH 0.30 557 7 1169.7 43.3 56.3 B1 M VL 0.05 44 7 15.2 0.6 0.7 B1 VH H 0.85 517 7 3076.2 113.9 148.1 B1 VH L 0.40 158 7 442.4 16.4 21.3 B1 VH M 0.44 505 7 1555.4 57.6 74.9 Investigated Stream Length 2480.00 Yearly tons of erosion per linear foot 0.261 C1 VL L 0.01 402 1.4 7.0 0.3 0.3 Investigate d Stream Le ngth 201.00 Yearly tons of erosion per linear foot 0.002 D1 M H 0.18 132 4 95.0 3.5 4.6 D1 M H 0.18 32 5 28.8 1.1 1.4 D1 M H 0.18 45 5.5 44.6 1.7 2.1 D1 M M 0.18 55 4 39.6 1.5 1.9 D1 M M 0.18 48 5 43.2 1.6 2.1 D1 M M 0.18 57 5.5 56.4 2.1 2.7 D1 M VH 0.30 42 4 50.4 1.9 2.4 Investigate d Stream Le ngth 230.00 Yearly ton: of erosion per linear foot 0.075 ` Erosion rate based on study of West Fork White River Watershed (Arkansas) published by M.A. Van Eps et al for the Arkansas Department of Environment 0 • • Table VI: BEHI/NBS and Sediment Export Estimate for Reference Streams I Erosion rate based on study of West Fork White River Watershed (Arkansas) published by M.A. Van Eps et al for the Arkansas Department of Environment Reach BEHI NBS Erosion Rate' Lenl1th Bank Bank Height Erosion Er osion Erosion ft/yr ft ft ft3/ yr y d3/yr tons/yr B Ref L L 0.03 631 2 31.6 1.2 1.5 Investigated Stream L ength 320.00 Yearly tons of erosion per linear foot 0.005 El L H 0.08 30 2.3 5.5 0.2 0.3 E1 L L 0.03 '32 2.3 7.6 0.3 0.4 E1 L VL 0.02 146 2.3 7.6 0.3 0.4 El M H 0.18 70 2.3 29.0 1.1 1.4 E1 M L 0.06 219 2.3 27.7 1.0 1.3 E1 M M 0.18 341 2.3 141.2 5.2 6.8 E1 M VL 0.05 11 2.3 1.3 0.0 0.1 Investigated Stream L ength 470.00 Yearly tons of erosion per linear foot 0.023 G1 L H 0.08 98 2 15.7 0.6 0.8 G 1 L L 0.03 45 2 2.3 0.1 0.1 G1 L M 0.12 311 2 74.6 2.8 3.6 G1 L VL 0.02 35 2 1.6 0.1 0.1 Investigated Stream L ength 245.00 Yearly tens of erosion per linear foot 0.019 0 Table VII: Designed Vegetative Cnmmunitiec !Rv Zanel Woody Vegetation Planting LS - Live Stake; BR - Bare Root; CN - Container: TP - Transplant; RC - Recruitment Scientific Name Zone 1: Stream Bank - Channel Zone 2: Stream Bank - To Zone 3: Riparian Zone 4: Transitional Zone 5: Easement Canopy Acer ne undo TP; RC; BR RC Acer rubrum TP;RC x Betula nigra TP;RC;BR;CN Caga cordiformis BR p' Carya ovata TP; RC: BR n Celtis laevigata BR BR O Dios yros virginiana BR O Fraxinus pennsylvanica TP; RC; BR TP; RC; BR v' Juglans nigra BR;CN Liquidambar styraciflua TP; RC; BR Liriodendron tulipifera TP; RC; BR ?y Nyssa sylvatica BR; CN Pinus echinata TP; RC; BR r Pinus taeda TP; RC; BR N Platanus occidentalis TP; RC; BR TP; RC; BR O Populus deltoides LS (0-25%) Quercus michauxii BR; CN BR; CN Quercus nigra BR; CN Quercus pagoda BR; CN Quercus phellos BR; CN BR; CN Quercus shumardii BR; CN Salix nigra LS (50%) Ulmus alata BR; CN O Ulmus americana TP; RC; BR `? • • • Table VII: Designed Vegetative Communities (Bv Zone) Wood Vegetation Planting LS - Live Stake; BR - Bare Root; CN - Container: TP - Transplant; RC - Recruitment Scientific Name Zone 1: Stream Bank - Channel Zone 2: Stream Bank - To Zone 3: Riparian Zone 4: Transitional Zone 5: Easement Understory Aesculus sylvatica TP; RC; BR Alnus serrulata TP; RC; BR Aronia arbutifolia BR BR CD .? Asimina triloba TP; RC; BR TP; RC; BR a Baccharis halimifolia BR >y n Callicarpa americana BR O Carpinus caroliniana TP; RC; BR TP; RC; BR C Cephalanthus occidentalis TP; RC; BR TP; RC; BR Cornus amomurn LS (25%) Corylus americana TP; RC; BR Crateagus crus-galli BR; CN Crateagus flava BR; CN Hamamelis virginiana BR ?..? CD Ilex opaca BR ?• N Ilex verticillata BR; CN Lindera benzoin TP; RC; BR Ostrya virginiana BR VA Rhododendron periclymenoides BR Rhus glabra BR Rosa carolina BR can Rosa palustris BR B Rubus cuneifolius BR eD Sambucus canadensis LS (0-25%) BR Sassafras albidum BR BR r-r- Staphylea trifolia BR ?.r Vaccinium corymbosum BR A? ? Viburnum dentatum LS (0-25%) BR `? • 0 Table VII: Deshmed Vegetative Communitv Zone 5: Easement Plant List Scientific Name Common Name Paniculn virgahrfr: Switchgrass Andropogon gerardii Big Bluestein Schizachvriunz spp Little Bluestem Sorghastruin ruutans Indiangrass Panicunt spp. Panic grass 0 UNITED STATES POSTAL SERVICE • Sender: Please print your name, address, and ZIP+4 in this box • NC DGNR Division of Water Quality 401 Oversight/Express Unit 2321 Crabtree [3oulevard, Suite 250 Raleigh, NC 27604 C 0 First-Class Mail Postage & Fees Paid USPS Permit No. G-10 ¦ Complete Items 1, 2, and 3. Also complete Item 4 if Restricted Delivery is desired. Print your name and address on the reverse so that we can return the card to you. 0 Attach this card to the back of the mailpiece, or on the front if space permits. 1. Article Addressed to: W. M. Garner&Son Builders Inc. 1423 Marshall Street Roanoke Rapids,NC 27870 DWQ# 06-0463-Nash A. Signature ? Agent B. Received by (Printed Name) I C_D¢te of D. Is delivery address different from item 1? ? Yes If YES, enter delivery address below: ? No 3. Servlce Type ? Certified Mail ? Express Mail ? Registered ? Return Receipt for Merchandise ? Insured Mall ? C.O.D. 4. Restricted Delivery? (Extra Fee) ? Yes 2. Article Number (transfer from service label) 7005 1160 0000 9954 5880 , ~i r , ~ $ ~ b 1; ir~'41 ; ~l'a i~~,' u °r.I YARMNE AS QMECTED IY THE ENGINEER ~ ~1 M I F ~ i.--"4i;. ni . A~i~";.r~~. DEFINITION: ContrdNnq runoff and erosion on disturbed areas by ataWiohlnq perennid vegetative ~ 1EYe0B~RX SEE~IG SPEt~C! ~~t~G~a> ~Iri~^~" cover with seed. SNdMp data given Y the mbttvh opociNcotbno on oted a "boot' a "poee~le". Properly oul wlWn the "best' Iota a hlgh probobNRy SAIGIIIg mlYwf. idll PURPOSE: To reduce erosion and deueaa sedknent yield tram disturbed aeae, and to permanently a! ouooao. Rio ebe PoMRM to how ootlelactary eetablkrlwrwi! when eeedMp outtklo e 120 etobNi:e euah ass In a manner that is economical, odppt to sit. candltlone, and Blows these dotes. Howarcr, M you dsvMb Mem Ihem, tM prebobllty of foNire 4lcnsooee Rye g?aln eelectlon of the mat appropriate plant mataialo. ropily. Sesdkq on tia tot laic shown uneer poMlble may reduce ahanEM M ~1~tu X11 ~p r~p~/~ ki,.~N;~~ MIOVEN FILTf]t iAlilaC ~.,~.,it i~` i *l ~y by ,io~6Geit Ahwryr ~ ~ ~ f~+t >n E lone-~ ~ SPECIFICATIONS: ~ F~.~::.,R "r ua~ts Uoo catNlod coed fa pormonont oadnq wMnowr poo~lo. CatMod oooe N Mnpoctod ~iki..U{i.~aGLl1 Eetabllehment d vegetation should not be attempted on sites that ore unw(td~le due to by the Nortli Oq~•e~p Nrpravernent Aeoecbtkm. R moots pubNehN North CMOINw Rys 11?~ 120 ~ F~ Inapproprkb seN texturo (NC Erosion and SedMnent Control Planningq and Design tlanud, 1988}, ~q~~ ~ dpyw belt M pMpW Annul leopede:o o w of anti meoMra haw boon poor drokrags, eonwnbated vsriand fio , a steepnea elopo Omit Mnud Leepedeta when duroUon of tempaay u L taken to correct they problems. l.~absllnE of Wen-oertlNsd eeel ft abo rruMod by law. labels contain knportont of twnpaay cover it not to ~xt~nd beyond July infa~melion en ceee porky; pu~onNietion, eM Preeena of wood eeedo. Soodo rnuet meet To maintain a good stand of wgetotion, the eoN muei mat csrlaln mbMnum requirement Stoto ~ eentrnt Do np oooept Mod oontg4lMiE "prehtbRed" ac a groNh medk~m. The exbtinq cant should haw these ultsrla natllys ~ e - i -~l =1 i--~- eauL.Uet~ - - -U~- -111,.. German tMlel ~ - 4 Enough fine-gra(ned (sWt and Boy) motrial to malntdn adequat mdetun and ~ ~ ~ AMitaObiIN11 b~ctria qua ~ 4he o< ~a nutrient supply (avaNable voter capacity of of klloat .06 tnahea valor to 1 bch of ooll). APPIy Mod unHaney wNh o cyclone eMear, #~aP-too otrwwor, drll, a~It~ocMa oadn, iaN: Au . 15 - DoC. so g ,r or hydiwadar e>'t • Aron, t}lalio aMdMe, late winter (early eprNpk Suflkient pas space to permit root penetration. Summer. Jon. 1 - Moy 1 May 1 - Aug. 15 ~j N Moon using a drll a arRlPeoker aseeer, 1 emaN grata no more than 1 Nwh dap, iT{Ei. POiT ~ ~ SufAcisnt depth of eoY to provkis an odequale root :one. TM depth to rods a ~ ne more Mnn 1/1 Egtliprwont ahoukf be odNrroted In tM Noll ~~l..~mlolim111ta or apply 2,400 tb/aa~ ground ogrkulturd STEEL PAST impermeable layers such a hadpans should be 12 India a rnao, except an yM dNwM Na~rrE FoNow recanmondotione of soM teat a apply 2,000 ekipM steeper than 2:1 when tM oddRlan oI ell ~ not haeibie. Ulneetone one 760 t/ocn 10-10-10 hrlNiter. hrliit~r. MMn ueMp breeeoaet-eeeekq rnolhoeo, aublhdds tM aeo Into workable eeclione and fM,lEq FAiMNC A fovarobie pH range fa plant growth, uouaily 8.0 - B.S. eetermine the ,amount el seal Wooded la each oration. ApPI ono-hdf Mlo see whN• YWGti ~Ch b todcMq with dt, rovkiq a a mulch frAilbC ~ ~ Y ~ ~*1 lock oM te>iM norrM Mte efw, a uflNenw • ttwt apply the ae>coM APWY 4,000 M?/sae otrow. Anchor muldr by taddnq i Ira from loge roots, brancha, stones, large dodo of earth, a trap of any heM Mr We esrr+e way; but mwlrN of rim efwa b Yn Arsl Ida endarNE feel. A elelr wNh Modeo col naly etrelght ~worlY dnlght can br uNd a o mulch andiainq. kind. Gods and stony may be left on slopes steeper than 3:1 H th.y ore to be tad. 1 hydrocesded. Yulah aN pknlMrgo knmodio111y e1le? aaaeNp. llofntm~~oocl r A If any of iM above criteria ore not met - i.s., if existing coN lei too coara, deny, chaNow RehrtNise H owth N not fuNy aeequate. Reeled, reit r td 4 ota. RMMd, aiartYlu and mulch immadio y a acldio to fats vegetation - opeclal amendment ore required. Tho aoN ~ foMowMq a eMnr dilrrago. descrMred below may Ae benefbid a, preferaW~ tcpsoM may be applkid. ~ REF: 8.10 A,I ant C, NC Erosion ant Sediment Cont I SwdlmN+t Contrd Planning and DNign Maned, 1~ Surfeoe rougha+Ng w Pardalorly knportant when hylroeeedtnq, a o rou elope r 1 T wIN prewWe aonre not<ral oworoMe for Nrno, iertll:a, oM Mad The aheull not ANOHOR iKMT 1" MIItRltlll en at before M a omooth. FMNI eeeebN tion N not neceaay lar hye?oeeedNE inetdl necMMry mechanicd erosion and ssdkn t ion control practkae aedkiq, ~ ~M dsef~ ~ proviee oarrtfaa N whkA aa1M aeN AfK21Qll SKIRT f' MINYiIUM and aofrlplate Eroding accadinq to tM approved pMn. ~ l.kne and hrtlllser Wads should be determined by sdl tests. SoN tallnq k performed bra R b Slildh4.mir3u[e eM el wool Aber (aoNieoaa) aPpWaetlen should be el boot x,000 /ewre. of chards by the North Cadina Department of Agrlcultun eoN toting labaatay. s~..U~lAlcc~ Okectiont, oample cartons, and information chat ore ovnilaWe through aavt,ty r a TaN ~ Apply kiqurno inoarlonta of Nwr tbM the rroornnendee ate when addklE booulanl to K o Agricultwd Extenelon officer or from NCOA. tlecaua the NCDA eoN tatM?g lab requ a hydraNdK ~ obe IlaporMt ~o 40 1-8 wake ter eampl• turn-sauna, sampling must b. planned weN In odyona of Nnal c~~..~s~ gradMN. TeatMp it loo done by oanrnercial IabarotaMe. H e brwkMiwr of l to 9 Aare oocun, old 60,r man odd to the tank, ~ ~ 6etwssn 1 and Au 16, odd 10 Ib/sue German b/aua GrmoH mYlat a 15 Yp/ocn Sudongrou. 1. iILTER iAiRIC ~ A1ALI. ~ A MNiMY1N1 Qi Jr M MN11H AND lNIAIJ,I4VE A INNMMIM OF 8 LINE MMES MITH 12' bead on tM of the r Ihio ahoua Mr to ~ 4 ~ ~Y M"~ng' O0"'~t eonra~pc Prior to 1 or oltr 16, add 40 t/sae rya When call teats ore not available, foNow rotes euggesied In the seeding epeclflcatlone shown ~ ~ w ~ ~ ~ ~ ~ ~ M w?y A++4 Avert,, y naaaaary, 40 tb/acn ryw (groin). STAY SPAf~NG. at right. ApPNcalion rata ueuaNy faN k?to the foMawMrE rangy: 2. MIOVEN i~i3'R iAYWC ~ IUD M~ >1N.T iENCt fi TO Ri11AW TOR A PfN100 Or YORE 1NAN JQ DAYS. LMne M not narmaM whir e h aeoda beooua k M obradva. H Ind on tan : y eMPI~ ~ Olit Ground agrkuiturd kna • ateeP dopes, N at+ned M leaven onto tM dapM b cry kern. A S1E>:l POi1'1 fIIALL K O'-Or fN NEKaHT AND K a AfL E;VV'-IAiIIIIER ANOIt i1E'tl 1YPE. t PatNplt 4. MIASIfEp ilk SMWI N IIitD rO MJRY NgRT X11 >w?1 A!~MOt ,K IIN''A 1iQ A CHANIIEI, CREEK OA POND. LIEht-textured, sandy toNs: i to t-1/2 tone/sue iaN: Aug. 25 -Sept. 15 Sept. 1S Aug. 20 -Oct. 2S S, ANMI SLT iDICt UI SLR AT tll~. Heavy-textured, dayay eoNs: 2-3 tons/ode lots winter. ieb. 1S - Ya. 21 Y+~. Ma. 2i F.b. 1 -Apr. Is ta. wtEN rMRIC I5 usro IMAI IMRE wrart +x CFAITERED POi7i YAY II tnt. Generally, a atone of wgetotlon cannot w MtrminN to br lolly atabusM/ untN sari iaN is beet for tall locus and late winter fa k~epedr FertNi:sr: oewr hM been maNloYiM fa area iuN year from Planting, titopect coded aruoa fa fwiNrn Mtu fa tapadazoa. Owr~dinq of Kabf IMpwdao Massa: 1100-1200 Ib/acre of 10-10-10 (a the equivalent) ~ m~e wIMN ~ arfwe MMOn, M over font-osedod taM Necw it very effective. WI~iIElIIYGE, tuna: 800-1200 Ib sue of 5-10-10 err the Ivdent n7 ~ M moo' Grant-legume mix / ( equ ) 1. iILTE11 /ARRftfsS SHAH ~ MIi/ECTED IY Tif£ CONTt1ACTOR fYMtDIAIELY Ar1ER EACH RAMtiALL AND AT LEAST DAILY R -H a olonl ha aver, rrevokw4 airobe o< wrekaida and - ~ Apply IfrN and tertNizer occa to soN tats, a aF Appl Ilene and fertWizsr evenly and incurpaat into the tap 4-8 incha of coN by disking ~ ~ ~ ~ ~ qN #un/ ~ a y to mochb an tM contour. MNw~ usin a h oeeeda Nmatone and 1,000 N+/sae 10- 0-10 tsrttliser. aoY tatr, a apply 4,000 Ib/aaa ground ogriculturd DURMIG /ROLANCtD RAMIiALI. ANY REPAMIi NEEDED MALL fR MADE MMtEpAIELY. a other callable means a cry ydr , g aced the stone, Cenddar aMdkp t•~wporury, onwd apeelM H the stns yrar M real o s, SHOULD AfE rA1fYIC DEC01MfN>E OR IEOOYE IN~RCAVt rRloN TO Att END a Att EIPECIED uf~.E uFE AND THE BAIaatR sA~ u NEOtrlir#RY, THE 1AiRIC >111AL1.1[ A~'M,AO~D MIOMI~ILY At ND ADDrnaNK COiT ro THE aTY a apply Nme and ferlNiter to o rough, loos cutlass. ~ ~ 14llcb afARLOTTt'. Roughen arfaca prior to seeding. If IoNs b meet tested to dstrmiM H addit a nutrient irrrbdana ADPIY 4,000-5,000 Ib/acre grdn straw a equlvdent 10n ~ ~ M y material. Anahar mulch by laddnq wNh wphdt, rovinl r ar pulvdant cover of another ruitabN mubhln9 A SEDItiENT OEPOBITS SHOULD IE REMOVEO Ar1ER EACH iTORM tV01? QR MLT PDfO[ iFIOUID IE REPLACEII. THEY MUST h wphdt, rovtnq, a Hafting. N~ttinq N tM praNrrad 0E ftE1101A;D M1~M OEPOft1S REACH APPAOfL NALfr AIE NEtONt a Aft' iAR#IER. ANY SEDIMENT DE/OpTS REMAINM~D dads 2" max. and rdcin into o smooth ~ l^E on ~ dopeo. Complete seedbed prepaatlon by breaking up age ( ) q , Mt PLACE AVER AK >OI,T 1EMCE li REYDND ~W~. K DAL~R Tq OOIN'OAM TY A~ E>IOi11N0 ARADE~ PREPARED uniform surfoa (slops lea than 3:1). FNI In a level depreeebns that can coNect water. ierUNetlon--on the lyplcd Iltturbed oNe,' fuN atablioMMnt uoudly requlna roiirtWotlar ANO SEEDtA. Broadcast sad Into a freshly loosened seedbed that ha not t?esn ceded by rdnfoll. h fM eeeonl leoeon. Fbe tu?1 nquNa annul wrobtenarra IerNhotlcn. Uoe Refsrtliao N tfN eeoard yea unlea growth N fully a Irowth N fully adequate. May ba mowed onw a eoN toot H PoodbN K ~ the ouidaWrao given br 1M apadAa aaulbrE nlbt4lrt. twla o year, but mowbp N not neaaary. Reseed, eery. Reeved, fKtW:a, and mulch don?aged area irnmediatdy; NTS MiEF: 8.111 NC Eroebn and SedMnent Control PlannNM Ca~tral PlannNq and Design Manuel, 1qN EIIISTINfi A1EE TRUNK 1 a r~~ a rte" wAROS (oR i• EaIIWILU111 AGAMISt AIEE A1tMIK V _ AnACNED rxAt cAM~E EwsnNC TREE 1.0' ~ TRUNK 4"-DI LATERAL, PROPERTY PLACE IOAIbS AGAWST 1REE TRUNK AMO ATTAal PERFORA PVC PIPE BOUNDARY PROPOSED I OZ Y NON-W04EN GEOTEX11lE MA1H CANE AT A~, 1011DY, AND OpITER. OOARDS PERYAI~NT ~ r 12"-THK2t (YIN.) (ItMtAi'I 160N OR EGUIVAI.ENT) SItOtNA OOIMI,EIELY >alRROlMO AxE. GAK ~1Mfm1 \ ~ ~ ~ AOOFSS ROAD FILL IDAADi SIIOIILD NOT tKIXED 4 fNCNE'A PVC CAP WITH 3-4, ~'-DIR. HOLES AT ~1 \ / i \ , iil HEIGHT \ / 11. ~ , ~ \ 4.0 ~ d~ 0.0 (MME) \ / ~ . ~ \ i \ \ \ / ~ L 1REE TRUNK PROlEC110N SHALL IE AOt1EJAD TO MRIEII MfoRKMlfi MIA~1 lo' a AN EIgTMq Aitt \ ~ oR w HIfRt TRAHIC AREAS. ~ ~ , ~ , \ ~ i 2 PROTECTION sHALL ~ MISTALLED PRfOR Ta \ \ \ ~ eEaNwNC caaTRUCAO~L \ \ ~ i - \ \ 3. \ \ \ \ AT ROOT o01LAR, iANOfiIAGi YAY N MI q \ \ _ l / _ 4 aA. PERiORATED PVC PNsE \ \ I nwac uYER ai N000T 7 . wC PIPE uTERAL PIPE USED To COVER DunRta RooTi ~ \ \ aA. Ha~ES AT o o.c. \ \ rfAS~O iIITER s / \ ACNiG, aFFSET Na.ES ALONG r q o.c. ~ ALONG \ \ 1.0 \ / \ ~oTTaY a r ~ i , \ ~ n \ \ \ ~ r ~ \ ~ ~~:,=z SCALE: t • ~ \ r~ • ~ \ \ ~ \ \ DAYLIGHT PIPE wTN \ \ 90-W1 PE MEMiItANE PLACED N \ cAP (OUTLET IiIIIS 3'-tMfilt (MME) ROCK Rr RAP ~Ni, OEfrITER Oi ROCI( R~ NAP SRN \ stOE awl» \ \ i CONSISTMIO OF NCOOT q~ASS Z (10011 ~ \ / ~ . \ 3 -HKBff (YIIt.) Roar av RAP ~ AND OA11011 MfALL DOCK 160.1 PM~E TOOT COMSISTMtC OF PE 'e ( Np 16~110RANE IECURED T4 PIPE WTH V \ ~ CONSISTMIG Oi NCOOT olASS 2 (d60~14 EXISTING 1REE AND/OR GAiiON Mt#Il ROp( (d50~8 20-YN. 2, 24"-DIR. HDPE h10PE 1AfrE (MNAIPED 3' MMI MI EACH RIGHT OF WAY ~ ~ TRUNK 20-MIL PE MEMBRANE PlACEO CORRl1GAlED TEMPORARY O~CAON i1i01i END of YEYBRANE) Ni aDfTER OF ROCK RIP RAP STORYMIATER flYPASS PIPES Ir ~ (sEE NaTE) IN can \ ~ eERY u eEfat ANO BENEATH Roar oN / \ / \i t \ , 1 UPSTREAM s~ a IM 1 ~ ~ ~ \ aAx. wAx. \ c~ c~.~ , i 4"-DIA. PERFORATED PVC PIPE \ \ 1 1 ~ ~ ~ " aA. HOLES AT g" O.C. \ \ (Ye ~ ' ~ ~ ~ \ \ SPACING, OFFSET HOLES ALONG ~ ~ ~ BOTTOM OF PIPE) \ \ , ~ ~ ~ 'V~iV~/~A \ A ~ c~0i TYPICAL BIPOIIAIIY COFFMAN UCTION I tWnoM 1Y~oAAw1 aTOww&W Mt ~LtT~T1oM ~ D 3 24 N&W BAGS MAY BE USED Pi UEU a am RIP RAP. 'T MUM PLAN e SCALE; 1 :2 SCALE: 1 = 2 ~~r,~ GR ~ I 0 I f STREAM I / ' t1 j I o TEMP BM(60D NNL) ACCESS PROJECT AREA NORTHING: 525969.36 • (SEE BELOW) ~ FASTING; 1457659.98 ~ ELEV.=661.81 ~ ~ ~ ~ ~ 161-021-65 ~ ~ lAT W. do KATHLEEN K. PUR: ~ -021-65 \ Md THLEEN K. PURSER / ~ n rn M 40'-WIDE PUBLIC ( / DEED 06049-035 ~ . ~ anon 06049 035 ~ 1302 CHADSFORD PLACE STORM EASEMENT WeOdw ~DSFORD PLACE ~ J A Z N ~ n Ol 9, I i d~jNIA ZZ~^ 4iq , , a W ~ I 40 -WIDE PUBLIC ~~vn ~o ..v , ~ 1 ~ STORM EASEMENT Oq ~ 3 a o~W ~ L ~ / ~ NQOQ ~ v ~ ~ ~ ~va~` n o~ 1 181-021-15 / ` ~ r, SITE LOCATION CHRISTOPHER G. do LAURA S. PRALL ~ / SEE DETAIL 6 - (2103 VERNON DRIVE) py I~~ ~ 1\, DEED 07244-096 ` SILT FENCE ' ` o I \ 'f. 2045 VERNON DRIVE / ~ t ~ ~ SEI SEE DETAIL 1 GABION WALL PLAN Z 81TE LOCATION PLAN \ ~ \ SCALE: 1 =200' z SITE ACCESS ROUTE ~ ~ ~ ~ ~ 0 p ~ ~ ~ \ \ SEE NOTE 3) I ~ RIPRAP ~ \ ( ( TEM ORARY \ ~ \ \ \ TEMPORARY / ~ ~ ~ ~ ( DOT CLASS 2) \ ~ \ , ~ COFFERDAM \ ~ ~ X 3 APRON 1 0 ~ \ I3 ~ ~ ~ ~ SEE NOTE 2 ~ ~ ~ r ~ ~ ~ \ ~ ~ / •i • ~ ~ ~ n\\ / \ / i l ~ J1 A ~ , \ \ ~ J - / ~ \ A ~ ~ ~t ~ 1 ( ~ I 1 1 1 l - _ _ I TING ~ ~ ~ r• r i i i • I I l I I I i P / ~ ~ v / I i PI ~ ~ . ~ t o ~ w i- ~ . ~ ~ ~ / I / ~ ~ , i PROPO / I _ ri'~.~ Q ~ ~ I ~ ~ I i / MP ARY 1~" DIA. ~ \ ~ L' 1 _ ' 'V ~ , f l~ ~ / l ~ ~ I ~ / ~ ~ / / ~ CMP CU T 1 ~c- / ~ 0 ~ G SEN TE6 ~ ~ ~ ~ ~ ) ~ S S, ~ r . ~ - / - J r-- NO S. x ~ / - ~ TE ~ / ~ ~ 0 R / ~ d PROPOSED TEMPORARY PROPE TY ~ ~ ~ ,~`"~r / 1 ~ L ~ ~ _ \ /~i J • • 1. EXISTING TREES GETATION UPGRADIENT OF GABION WALL SHALL BE r-- a /VE BOUNDARY ~ CONS~RUC110N EASEM T ~ ~ 'i-~^ ! - v • • REMOVED AS NECESSARY TO PROVIDE ACCESS FOR CONSTRUCTION ACTIVITIES. ~ 1 1, ~ ~ 1. t 1 2. A COFFERDAM BERM WITH STORMWATER BYPASS PIPES SHALL BE ~ / ~ ` / E%ISTING 4 DI . CMFI ~ ~ ~ ~ , ~ ~ '~fr \ ~ 'r ~ ~ S 0 , ~ ~ , CONSTRUCTED TO DIVERT BASE FLOW CONDIiiONS AROUND THE GABION WALL i I Oq s' ~ DURING CONSTRUC SEE DETNL 7 SHEET 3. THE TEMPORARY y ~ ~ i ~ i \ \ i ~ ~ ~ o ~ ~ ~ ~ , COFFERDAM AND STORMWATER PEES SHALL 8E REMOVED BY THE a / / ~ ~ o / ~ ~ . / ~ ~ ~ ~ / V 0 '4 CONTRACTOR AT THE END OF CONSTRUCTION AND THE GROUND SHALL 9E Z W o / ~ ~ ~ n ` ~ ` ~ ~ w 1 1, ~ o ~ ~ ~ ~ ~ ~ RESTORED TO ORIGINAL GRADE. ~ ~ 'd° ~ ~ o i W ?s ~ ~ / \ , / ~ \ / I ~ 6 0 3. FILL MATERIAL FOR SITE ACCES,. MAY BE PI tiCED +TNLY AS APPROVED. Ai ~ W o 1 \ y \ g / ~ o \ ~ 1 • THE ENO OF CONSTRUCTION, FILL MATERIAL SHALL BE REMOVED AND THE ~ I~ 40 WIDE PUBLIC \ q~. / 1 ~ \ I • 1 \ \ ~ PROPOSED PERMANENT GROUND RESTORED TO ORIGINAL GRADE. ~ ~ ~ EASEMENT STORM EASEMENT W ~ N ip 1 1 ~ ~ I / 4. CONTRACTOR SHALL PRONDE TEMPORARY CULVERTS AS NEEDED BENEATH ~ Z J ~ Q ~ SITE ACCESS TO FAgUTATE DRAINAGE ANO PREVENT PONDING OF WATER ON ~ ~ i / \ ~ 1 ~ ~ 1 / 1 \ I I~~ V r SITE. AT THE END OF CONSTRUCTION, CULVERTS SHALL BE REMOVED. ~ m \ ~ / ~ ~ OARAGE m W h PROPOSED TEMPORARY ~ W \ .~C e. ~ Q, , ~ ~ ~ I I 1 _ ~ NT TRUNK PRO CTION SHALL BE PROVIDED WHEN WORKING WITHIN 10 OF ~ 7 ~ CONSTRUCTION EASEME 5 TREE ~ , , ~ r A ~ ~ r`^T U ~ ~ ~ 4 _ ;5::.::..._= OF.:;EC : TF. ~GFiC ll~@c~~ SEE DI'AWI;~~' - S-- - - ~ \ / 1 ~ ~ V1 \ ~ ~ ~ ~ I ~ 6. PROPOSED TEMPORARY 12" DIR. CMP SHALL LAY ON GRADE IN THE EXISTING ~ Q, DRAINAGE FEATURE. CONTRACTOR SHAM BRIDGE OVER CULVERT WITH BACKFlLL AND MAINTAIN THE AREA TO ENSURE PROPER CONVEYANCE OF k ~ / PROPOSED PERMANENT ~ ` HOUSE WATER AWAY FROM HOUSE. 1 I EASEMENT 1 ~ 7. CONTRACTOR SHALL BE RESPONSIBLE FOR ANY DAMAGE TO EXISTING ~ 0 STRUCTURES AND CULVERTS PIPES. ~ \ / 181-021-16 ~ ROMA W. T1SON \ NousE ~ DEED 06788 390 ~ 'i ~ Y \ SEE DETAIL B 2109 VERNON DRIVE ~ I \ TREE TRUNK $ , ~ , , ~ A 0 i ~ a `a PROTEC?ION \ ~ 181-012-81 LEOEIrB~ ~ ,yq W. Z. MILLER, III ~ ~ I \ SEE DETAIL 8 DEED 05534-592 PROPERTY . . . BOUNDARY EXISTING CONTOUR \ TREE ROOT AERATION $ 2103 VERNON DRIVE ~i \ SYSTEM PLAN I STREAM p„ I 1 ~ i~ \ PROPERTY BOUNDARY ~ ff \ 0 0~ B, - - - - - - - EXISTING EASEMENT ~v \ 8. o DRIVEWAY i \ q~- 1 - - - - - - - PROPOSED PERMANENT EASEMENT ~ ~ ~I SITE ACCESS ROUTE \ ~o (SEE NOTE 3) PROPOSED TEMPORARY CONSTRUCTION EASEMENT x ~ N O ~ ~ ~ ~ - RIGHT OF WAY ~ o. f I 1 f ~ ~ N a ~ J - - - - - PROJECT AREA c 1 -rTrrrr EX. PSDE \ ~ ~ ~ \ ?g. ~0+ ~ ' TEMPORARY COFFERDAM h ~ i o, 1 ~ APPROXIMATE GABION WALL LIMITS \ s RIGHT \ y ~ ~ ~ ~ OF WAY p / \ ~ W Z . '~h ~ \ i; 1 ~ o EXISTING TREE y O ~ ~ J 1 ` \ t~` a p I O \ , ~i ?e I q ~ R MovEO d ~ W EXISTING TREE TO BE E „ WO N> i I \ t ..t 1-~ JOCv p \ $ TEMPORARY BENCHMARK ~ 0 \ ~ m = 9 \ ° Ij' ~ 0 ~ ~ \ \ SILT FENCE ~ Z ~ ~ o~ ~.N ~ti. r 1 x i r w,,. N ~ 0 \ \ 9,~. i ~ o• ~ 0 ~ ~ c-ry 'v ~ Z Z O x ~~N \ \ 0 ?0, ~ \ Hit I- W \ \ ~ Oq k i \ \ 0 ~ i ~4 ~ N > W ~ DRIVEWAY EASEMENT ••C = . 'j W \ '~S' \ V \ i \ \ ~ o \ Irs~. ~ . 4 • ~ - ~ ~ ~ W NCO ~,,py~ S, F. = r 0 \ 8+ i 'b \ \ ~ Z9~o D ~ 1 m \ / ~ \ \ t 4 1 GRAPHIC SCALE ~ \ \ ~ \ 0 = ti W ~o o s ~o so w v \ ~ ~ / ~ V i \ c \ o ~i~ 1 1 ' 1 F (IN FLEET) w w o Co i inch = 10 IL REFERENCE;. BASE MAP FROM SURVEY PERFORMED BY ISAACS GROUP; DATED JANUARY 19, 2005. 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N M dM passNdp N hoN seANfoc atddislwnent x I;. ~~4}~~`~ std~Ni:e euoh areas in a manner that le econankd, adapt. to rite conditbns, and dlowe y~ tee ~ when slplMg aYtsIIN BgtL sslectian of the mat appropriate plant materiels. ~ lbpw?, M you dsvleb bpm bnm, tM probsbNRy o! felwo brRxeoese Rye grain ~~~Ml~~ ~v~~f+' rapidly. Sssdhg on the tort ~ shown unMr "poaibis may reduw d+angM W 120 "''~'f,,', l..,i: i~;u , euoaM by Jo-bole Atw4yr t~ik. a~ Inca «ca+nt in kMauNno lon4-/IprrtprM acth~. Sssdina_MGclur~ uai~ rint~r early mrlnal SPECIFIC,~TIONS:.: Rf~~i.AE~IY~EMECYIS ties oertMsd ~ WOVEN FTLTER fA1gIC I'"'~ Eslddkilnnsnt of ~ ~ permpl sadlnl whonevsr PoNNNa. CertMisd sssl N wgetatlon should not be attempted on epee that are unsuitable due to b the Nsrtlr B~f.. r~t~.~ BtI~..Ublarr~l y~~' lnopproprleb seN texture (NC Erosion and SedYnent Control Plannin and Manuel, 1118 , y ~ bMipl'OINme;t h rnedp pubMdiM North GraNno Ryw groh Poe' drdnage, tr and Now, or eM of el anti Annud to 120 ~ ~ ~;4 eoneen ated overt qq Deign ) Standards ~ ~ bear ~ afAoNi CprlMsd Seed Iplel. stespn ape measwa haw bean taken to earrecl these prd~lems. label ~ Omit Mnud lespedeta when duration of rem as cover is not SO I^g wen-osrlkMd NN N dM rMuMad by tort. Labels contain tmpsrtant p y k - '~~Tutrr! i'•~;o y cover t• not ?o •xt.nd b•ynnd July. I - -i - I li~-- j__ (~-TC- To mobtain o good stand of wgetotion, the sop must meet certain minimum r ksmenb ~ sssl ~>R ~ Ksssnos ~ wood SMds a o rnsdN~m. The sxh soN should how theN alter ~ Itdp ~ Nnbnl wM11• ~ rep ooos~! INd 0011 tDitpd" firpM ring la: t~MN 1~ - - I -I ~i 1=111=1~f neldplM ~ Mel. ~lifV _ _ f - ~=1~7= Bc1~11~laria ~ _ . I . Enough Nee-grained (spt and day) materiel to maintop adpuab moisture ono Gsnnon MAlsl nutrient supply (avaNable water t of at Isast .O6 wobr Mwalafp ~ ~ ~ Osrteria b b eh. sit Ipp~^a, ~ ---ll- -lI„~ - _i agaci y hohN to I bch of MN), Seedha data (Plsd~noetl Apply seed unllonNy wMh o eyelets sealer, ~r+ai-11N Mr'~~ drMl, aultModut? ~d~r, idl: Au . 1S / Au . t - ~ M q S D•c.30 . SufAcMnt pore epos to permit root psnetratlon. ~ h1'~'~~' ~ 1 ~ fHit1 Isallwll, Lob winter (ply springk Jan. 1 Summer. ~ i Jon. 1 - Moy t May i - Aug. 1S When uebq a IrM er oultlfwoker sealer t smaN des no more than 1 broh y Sufficient depth of soil to provide an adpuate root lone. TM depth to rode or ~ ~ Ynpenneable layere such a hardpans should be 12 hares a man, tan M nroro than 1/2 Epriparsnt sbotld bs osiMabd b M1s Nsld SNL.pmrpt~8p3i d er than 2:1 when the addition ~P ~ 1111?N ~1 ~ ?oNow recarnrosndotkns of soN teals a 2,000 h ores a sklpes ssp of soN is not fsosNs+p. aDDIY / it ITEEL POIT U a s NmatoM oM yb0 ~/pan 10-10-t0 hrtNi~sr. ~ Ib/aa~ ground agricultural S1EEL POST . A favorable pH range for plant growth, usuaN 8.0 - 6.b. WhM ~ M~o~-fig rnsMols, ~ anp Into wadeable asrllons and Y debrmble u+e pwNNIM N Marl needed far sNh Mallon. on.-pore rM Mpe whNe 14~ y iLiER iABIMC ~w+1 ~ ~ farts pMaN MN antll, ~0 o unlferrw : MNrt ~y ~ MMAI Apply 4,000 W/acts straw. Anchor mubh by taddnq with i irw fiom large roots, brond»e, stones, large duds of setts, a Vash of any ~ ~ ~ rq with asphalt, rovkp a a nwACh kind, pods and stones may be left on slops steeper than J:1 If May an to be e~r?p ~ ~ msYMq ~ ~ ~s b ~ ~ ondrorhg reel A INh wNh bkelM ast reply atrelght eon be uN i1L1E11 fA#RIC ~ u, i~t can 1• used a • nwkh pwhor~?q. hydrosesdsd. Yvbh oN Mwmadkakaly alter aMNno. r 1 If any of ills above criteria ore not met - i.s., li sxisthg soN is too cMrM, dents, shaNow YeI~eOGDGt or ocldla b brier vsgstation - sPecid omendmenb ore rsquksd. 1b MN canditionart RphrtNizs N owih it not fuNy alsatab, RMSSd, nlsrtNits and descrhed below may be bsnefk;lal a, pnieraWK topsoN may be applied. kMOwklg N of 1' nlrtiit• and mulch Mrrn•diotdy ~ MtEF: 6.10 A,1 and C, NC t:rosion and Sedknent Contrd ann Contrd Plannk?q and Monad. 1181 r'p+8~+M1 N iaY Mnpartont when hyelroseedhg, a a rou ~ ~ slits aMMS pnrMN nelwal aw?aM for Wna~ prtliar, on/ apd. The sfroull real D••ign 1 T IndaN rncpssery mschanicd erosion and eedimentatian contrd proctka before Nedh ~ 00^~0°I~ or ameoM. ~ ~ N not necessary for hyiossslNg and odh accadh to tM owd 4 ~ ~?M dpllr IloRllr NM provide aerMiM iw whiab e 4r q g appr plan. Mills oslr ANaiDR BKNT 1` MMIMNIM ~ Pf]lllurEeli ccrnur. Lhte and ferlNlzer needs should be determined by toN teats. Sell lath 4 eel bee ANa1Dtt SKIRT / MMIIMUM of ch 1 Pam Rob of wool Iher oelNrioM ergs Iy Me North Carding Department of Agriwlture sop tathq labaot ( ) ~ ~d ~ « ~ x.000 Dlrectkxw, sample cartons, and hiormat(on shssb are avopable ~ • thrargh county BYtt.j Batt.U~lac[~ Agricullwd Extsnsbn oflica or ham NCOA. IeCOUM Me NCDA soN tsdhq lob requires ~Y ~ ~ ~ ~ ~ rob when Odding brooilrtnt b o TaN 1-6 weeps for sample turn-around, samplhq mud be planned wsN h advance of final hylrNNdK Kobe I1lpedsta 10 /0 gradNN. TodMp M dso done by oornmsn;isl lebaotorlss. H e msiddr?ery brMkdown el 1/7 b ~ hews oocws, old ~ man sss4 b the tank, r~uco~ :+~.r When soil feels are not avaNable, foWow robe suggested h Me Msdin flcations shown based on ~ ~ of the elur?y reMllning. 11tH should oomptnpa Nw to Bdwesn May 1 and Aug. 1S, odd 10 Ib/sae German mYlet a 1S ton mYl•t a 1S Ib/ocn Sudangraa. t, g ~ lowrpps Prior to 1 d righh AppNcotion rasa usudly faN hto Me 1bMowirrq range: My~M Z ~ a piN rob d rraw MM wroy M necessary May ar ofb? Aug, ib, add 40 Ib/ace rye (groin). rye ( iIITER iAM11C I~itgG IE A MNrMNJY Di J2` w rpTN AND aNA~ MAK A MMIMMIM Oi 1 LMIE WIRES MITM 12` ~°I^)' STAY Sr?ACNG. lkns M not na+MN p h ~o..tl11M 2. TfOYEN f~1E# iAONC K UsiED ~ »~T RNCt t; ro gIAMI A'QMOO ~ 110AE THAN 7D DAYS. Ground agriculturd IhNStons: y eNllal wNf? ylrauNa Meter booauM N M ebrpefw. N tpqu(rrd on Light-textured, sandy soNs: 1 to 1-1/2 tone/sae ~ MoPN, N elrslll M tllawft enb Ms fie/a1 M try pen, ~ 3. S1EEL'Oi1! iMALL K sr'-d' NI MEIONI NN! rK O? ~ >~uV'=IASip~~ ANOL! t'RSI. TyiE. e~ ~ wASItEO siTgwE sMAU BE ro idl: Aug. 2S -Sept. 15 A Heavy-bxtured, dayey soNs: 2-3 tons/sae wh Aug. 20 -Oct. 2S uwtD M~Rr lMpRT TMDD! >KI 1lMOE K !~D A~,IAf AMT 1g A g1A~i, OIIS~EK OR POND. yam;, Lob ter. Feb. 1b -Mar. 21 I Fertilizer: oenereNy, a stets of wgddlsn caMat bs Mlermheri b a fupy atabNshed untN sots F•~. t - . is a TuR>r SiT ~ u1? St.01iE Ar ENpl. 1. wfpr ?ANMC li uspp IMTM wRE tlgrl ~ CENTERED tosTr~ rAr IE up~E. firassse: eoo-120o Ib/acre of 1o-to-to (a the equivdent ~ been mobttainel fK one fuN pr from plantlnq, respect eeed~ orvo, kr (oNwe i~ ~ bed br taN iMCUe and lab winter for lapedezoe. owr« p•d•zo•. Owr•••dhq of Kobe I••p•d•ia - ) eM over fats- 1aN Gras legume mixtures: 800-1200 Ib/sae of ~-10-10 (a Me equivdent) ~ nay ~ N wHhN th• New Moron, N PMeMp. Heeled bKw N very dNctiw. M/bt~I1MGE.110~ Reessdbq--H p clan/ ha oswr re- ~-~101~t Applyy pme a?d fertWizer evenly and Inca ate into tM top 4-8 hcha of soN by dlskhq evduob d?oke of ~l wrab?lols ~ I or otMr suReble means, par WtentNles of Nits eM fartNger. eslebNeh iht deer/ Apply 4ns and hrtpizsr acca to sots tests, ar 4000 ib ate mach(n on tM cant r. o1tM Medbod - apN Oiler cry ar When using o hydroessdsr, ar over l Y 1. f1LTER 1ARRlE'RS SMALL IE M~iPEC1ED BY Ti1', CONIRACT~ tMyEpATq,Y A/~x EAaI RAMIFALL AND AT T r apply 4,000 ib/acre ground ogrlcullural DURING PA0I,ONOF~D RAMw'ALL ANY RDA~1 LEAS DAILY NEtpED St`tAll K MADE NMILOIAIEIY. apply Mme and fsrtNizer to a rough, IooM surface. ~ ~ Npnl. asaNnl N onrual MME M lM thee M ~ IMrns one and 1,000 N?/ace to- 0-10 isrtli:sr. iar ~ pM'~'Mb? perrMlrsirl M11Np. ~Ifax~ tNE rA1MC o~cowroK OA ~EOOiE INEIItCTIY[ rRlon To lift END 011NE [tPECTEO USAILE Roughen swfaca prior to seedhq. Ytal~ IARR~11 ~ ti NtC[iSAAY,11It /AIAIC LIFE AND THE saltAU. ~c ~AaO r~o~r AT ~o AoanoNAl C!Dil ro n+E aTY ar N wgdotian foNs b grow, soil meet w tested to dstermhs H acidity or nutrient Yrrbalanw kaY 4,000-5,000 Ib/oae prop show a equivdent cover of area fe rppanelple. mabrld. Anchor muldr by tockhq wkh osphdt, roving, a netthq ant cover of ono CMMLAT'1~ th•r •uitobl• muk,hbq 3. SEDIMENT OEt081TS SilOULD K REypy[p AfRER EAOM I1GRM tIRNT QA ~T pid~ seedbed preparat(on by breaking up large dodo (2" max.) and rokhq into a smooM, unlfa~n surface (elope lea Man 3:1). FNI h a level depraslons Mat can coNect water. errchafng method on eioep slopes. >~inq, a n•ttlnq. N•tthq M ttu pr•trr•d ~ REMOM<D Wi~N OE~~ ~E MIOUID 1E I~PI.ACEO. 1MEY MUST REACH APMO01. MAV ~K MLIOMi a 11R BAR1alER. ANY SEDMENT DEPOgTS REAWIrNIG IN PLACE AFTE1t THE NlT K IIEMDMD ~t ~ OAtIM~R ro ooN/olw ro THE EfISTNiG Broadcpst Mad hto a freshly loosened seedbed Mat has not been Haled b rohfoll. iertNlietlon--On ~ typkel ~ ~ ataaMhn~t usudly rerauirep rMsrttWotion AND tN~DEO, oR~DE, INEPARQI y h the secant growbq MMSn. /bra twf nqukee arwrel wrohtenanee brlMssllsn. soN tech M ~ fhfsrtliM M lMe ssoard anise pasMp w NIM1w Ihp guideWtM IfwN1 b? tM epedAc esedYp rgbltwrf, 9r~ M fully adequate. W y adequate. May b• mowed one a twig o ysisr, but nwwing M not nsapay. Reseed, fertW:e, and ~d. t•rtW:e, and mulch darioq•d areo• himedktdy< MiEF: 6.11L NC melon and SedMrswl Confrd Planning and Design ant 1 H~ nbq 0•epn Manual, 111 E>aS11NG 1REE 1RLSil( 1 2•,~` a mr ~ r Bo~AROa< to EQtN AGAMlST TREi VAILIIII TRUIN( ATT~IOMED Wlltt V i i b EtnsTlNC TREE 1.0' • TRUNK 4"-DIA LATERAL, PROPERTY PERFORA PVC PIPE BOtAipARY PROPOSED ~ PENIIAI~fIT ~ 101/SY NON-WOVEN CEOIEXiN.E 1LACE BOARDS AGAWST 1REE 1RtINl( AND ARACM IM1M CAILE AT IOP, BOTIOY. AND CATER. BOARDS \ . EASplptt 12 -THICI( (HMI.) (NIRAit 1t10N OR EQUIVALENT) SMDIKp OOIIPIE1t1Y SUR>f01~ 1REE. GAPi BF1~lN ACGESS ROAD i1,1 PVC CAP IMTM 3-4, BOA11D1 Sit01A0 NOT tNCttD t BNB, \ ~ . / \ ~`-OIA. HOLES AT / 11. \ 4.0 / FEI. HEK~MT ~ \ r ~ tl~ ~ 1.0 (MML) \ ~ / \ ~ / - 1. 1~E 1RUNK PROIEC~i SMALL IE ADNE~D ro ~ i Oil wORKWG Mlll/I 10' Oi AM EIp1M41REE aR w Mlgf ~ TRARIC ADEA6, \ i - , \ \ / ~ \ \ i , ~ ~ 3. 2 PR0IECTKIN SMALI ~ MiTALLEO A PRIOR BEGINNNG CONSTRUC110N. ~ \ ~ \ \ . / \ , ~ 4•- \ AT ROOT OOWIR, / 1 T11lgc urER of NCOOT 7 Dal PERFORATED PVC PIPE uTERAI PIPE \ / . -LATERAL PIPE WY ~ ~ USED ro OOytR ~O p / ~ WA>~IED F~ - aA. A lER ~ HOLES T / O.C. \ ~ ~ 1.0 ACNrG, OFFSET \ Nays Alan IU1TBp1 SOOT!{ ~r / IOTT>Ott a \ ~ /A\ ~ ~ r\ is . \ V ~ \ ~ SC~: ~ s Z \ / ~ ~ SCALE; 1 • ~ \ \ \ i \ \ \ DA1tiKIfT PIPE wTH \ cAP (ouTLET Tills \ ~ \ sloE aNLY) \ ~ 9O-Mll K IdfiI1RA11; PLACED NI 3'-ilpf (MMi.) ROa( Rl? RM BEMMI CEMIpt Oi ADp(M RAP BEIW \ / \ . CONSISINO ~ NCDOT CI.ASi 2 (~0•1~ \ ~ 3 -FNGH HMI. ( )ROCK RIP RAP BERM \ ~ CONSIS11t0 Of NCOOT CLASS Afb/~ OAM011 MIALL ROCIt ( 'NEE BOOT CONSISTING OF PE EXISTING iREE ~ (dS0•14 RIGHT OF WAY \ ~ 1RUNK AND/011 GAdNTl1 WAIL ROCK dS0~8" ~ MEINMAIr~ ~aNEO TO PIPE WTM v ( 20-MN. PE MEYBR ~ (SEE NOTE ~ / ) MV CENTER Oi ROCK P . PE MEMBRANE PLACED ~ 24 HDPE MDPE TAPE (<MAPPEp 3 MNI W EACH IIER Of ROCK RIP RAP CORRUGATED TEMPORARY DBfFC110M iROM END Oi Mp1iRANE) \ BERM / AND BENEATH A AND BENEAIM ROCK ON STORMWAIER B1llASS PIPES \ UPSiREIW SIDE \ 1 t FJIM SIDE M MAX. ( ) (MAX.) 4"-DIA. PERFORATED PVC PN~E ~ \ (Yt"-~i" DIA. OLES AT O.C. ~ \ 1 i ~ I ~ i ~ SPACING, OFF THOLES ALONG ~ \ i I ~ i ~ ~ IBOTTOM OF PIPE) \ i ~ \ ~-l~Ow i I ~ ~ o /1 fr~88~ sI i TYPICAL TlI~OIIAItY COfFlIIOAY ACTION II • T NAT HEM Iwo SAID BAGS MAY USED M! LIEU a1ROCK RIP RAP. . a 3 24 e moo GIN SCALE. 1 = 2 SCALE; 1 • 2 4 11 p ~l 1 I / ~ t I I I ~ ( , I I I I STREAM I ~ I i I I I ~ ~ 0 I j I I TEMP BM 60D NAIL ( ) ACCESS PROJECT AREA • (SEE BELOW) I I NORTHING: 525969,36 ~ FASTING: 1457659,98 I ~ i ELEy.=661.81 I I ~ - - - I I I j I I I 181-021-65 I I LAT W. do KATHLEEN K. PURSER •65 \ ~ N K. PURSER / ~ J ~ ~ 40'-WIDE PUBLIC I / DEED 06049-035 I-035 ~ ~ mar N I 1302 CHAOSFORD PLACE STORM EASEMENT ACE L.. J WN~j M 20 PL A z M 1 a~N,n I I ~l 9+ zz~~ 4! ~ ~ I o: a W ~ ~ I 4o'-WIDE PUBLIC I r I STORM EASEMENT ~~vr ~o ..v I w °~ZX q 3 o I ~ nua i ~ ~ ~ o~ SITE LOCATION 181-021-15 ~ . ~ SEE DETAIL 6 CHRISTOPHER G. do LAURA S. PRALL I (2103 VERNON DRIVE) p,l 1... - tN 1 w`` t DEED 07244-096 , SILT FENCE " ~ _ o, I ~ _ 2045 VERNON DRIVE ~ ~ 4i I ~ ~ ` ~ . \ ~ ~ \ 1 ~ , ~ ~ ~ ~ SEE DET • ~ \\\.,~^1'-~~..~-~~ GABION WALL PL SEE DETAIL 'I 3ABION WALL PLAN Z $ITE LOCATION PLAN ' \ ~ _ ~ SCALE: 1 -2C~0 z T A SS ROUTE ~ ~ \ \ SI E CCE ` \ 4 ~ \ SEE NOTE 3 I ~ \ TEM ORARY RIPRAP ( ~ ~ \ \ ~ \ / TEMPORARY ~ ~ OT SS 2 I ~ \ ( ~ ) 1 \ ~ 1 ~ ~ \ ~ COFFERDAM v ~ X 3 APRON l s I \ ~ ~ 1 o \ ~ ~ ~ ~ SEE NOTE 2 ~ I 1 \ \ , ~ 1 ~ ~ ~ ~ \ ~ ~ ~ _ ~ / _ ~ / ~ _ / / / v ` ` l' Zq0 JJ ~ --r- ti ~ ( or:~, , ? 1 1 ~ I TE al i ~ 'Ft 6 ~ ~ ~ ~ I ~ I I DLO ~ ~ ~ ~ ~ ~ DI . HDPE I ~ ~ . I w I / ~ .i PI ~ I . ~ ~ J ~ / I / ~ / PROPO D i _l l 1 ~ i ~ ~ l ~ ~ ~ ~ _ 1 jEMP ARY 12" DIA~ / r_1 - I l ~ . ~ _ 1 ~ / CMP CU T 1 yt- ~ k~ ~ ..r-}- ~ ~ ~ ~ ~ ~ ~ / G SENTE6 1 0 ~ ( ) S ~ ~ ~c 1 ~ / ~ ~ , ~ \ ~ ~ ~ S, ~ AAA r lest / , NOTES, i/ / . i ~ MP ARY PROPERTY ~ ~ PROPOSED TE OR ~ ~ ~ , _ i /i ~ i. EXISTING TREES/VEGETATION UPGRADIENT OF GABION WALL SHALL BE ~ ~ , ~ UNDARY ~ ~ ~ CON UCiION EASEM T ~ ~ ~ - ~ ^ ` - BO ` - ~ ~ i REMOVED AS NECESSARY TO PROVIDE ACCESS FOR CONSTRUCTION ACTIVITIES. o , 1 ` w ~ " 2, A COFFERDAM BERM WITH STORMWATER BYPASS PIPES SHALL BE ~ \ EXISTING 4 DI . CMFL 7 _ '~j- ~ _ ! \ ~ ~ SD ' ~ ~ , CONSIRUCIID TO DIVERT BASE FLOW CONDITIONS AROUND THE GABION WALL 1 Oq s" DURING CONSTRUCTION SEE DETAIL 7, SHEET 3 . THE TEMPORARY W ~ - i ~ ~ ( ) ~ ~ i ~ ' ~ - COFFERDAM AND STORMWATER PIPES SHALL BE REMOVED BY THE ~ ~ v ~ ~ / ` ~ \ 1 ~ ` . Oq , ~ CONTRACTOR AT THE END OF CONSTRUCTION AND THE GROUND SHALL BE ~ W ~ ` ~i ter. t1 '!'A n!9e.nt i ; t n+t e. nns ~ 1 ~ o ~ \ ~ RES1Crt,E~ vtv+.ril;thi. ~vi~nuc. I QQ W ~ d' o ~ 1 ~ ~ ~ 1, \ ! ~ I + ~ ~ A~ ~ 0 6 0 3. FILL MATERIAL F0~ SITE ,CCES.. IIAY BE PLACED 1NLY AS APPROVED ~ ~ ~ , ti \ ~ / 1 ~ I o ~ ~ ~'f' 1HE ENO OF CONSIRUCIION, FILL MATERIAL SHALL BE REMOVED AND THE ~ ~ I` 'af- 40 WIDE PUBIJC PROPOSED PERMANENT GROUND RESTORED TO ORIgNAL GRADE. ~ Z ~ q / 1 ~ ~ ~ \ I 1 \ ~ EASEMENT STORM EASEMENT W ~ N Ia ~ , t / 1 ~ ~ I ~ ATH ~ 4. CONTRACTOR SHALL PROVIDE TEMPORARY CULVERTS AS NEEDED GENE ~ Z J ~ 0 '~~vi SITE ACCESS TO FACILITATE DRAINAGE AND PREVENT PONDING OF WATER ON ~ ~ ~ ~ ~ ~ 1 1 / \ I 1 V r SITE. AT THE END OF CONSTRUCTION, CULVERTS SHALL 8E REMOVED. m ~m W ti v 1 PR / ~ I say ~ ~ ~ OAR PROPOSED TEMPORARY ~ W RO SHA BE PROVIDED WHEN WORKING WITHIN 10 OF ~ ~ ~O ~ ~ ~ ~ co e~ ~ Qla. ~ \ ? ~ 1 I i. \ . CONSTRUCTION EASEMENT 5. TREE TRUNK P 'TECTION^ LL ^ ' r,^ J I.. Q ~ _ E ..:,~!G 'R~_ C: : ,~L ?R ~Fl,~ :R~ ;SEE DETAIL QR~-„~ir_ ~ ~ - '~f" ~ / ~ i ~ ~ ~ ~ ~ ~ \ 1 ~ 6. PROPOSED TEMPORARY 12" DIA. CMP SHALL LAY ON GRADE IN THE EXISTING ~ Q~ DRAINAGE FEATURE. CONTRACTOR SHALL BRIDGE OVER CULVERT WITH k i ~ ~ / ~ BACKFlLL AND MAINTAIN THE AREA TO ENSURE PROPER CONVEYANCE OF k HOUSE WATER AWAY FROM HOUSE. ` ~ / PROPOSED PERMANENT EASEMENT ' f ~ 7. CONTRACTOR SHALL BE RESPONSIBLE FOR ANY DAMAGE TO EXISTING 0 STRUCTURES AND CULVERTS PIPES. ~ / 181-021-16 ~ ROMA W. TISON ~ ~ IrousE DEED 06788 390 ~ SEE DETAIL B ~ 2109 VERNON DRIVE ~ ~ o TREE TRUNK ~ , 0 F ~ a a ~ PROTECTION 1 181-012-81 ~ LEOEND ~ W. 2. MILLER, III rt ~ ~ SEE DETAIL 8 DEED 05534-592 PROPERTY _ OUNDARY EXISTING CONTOUR B ~ 2103 VERNON DRIVE ~ TREE R00T AERATION $ ~ SYSTEM PLAN ~ STREAM a I ~ PROPERTY BOUNDARY ~ \ Ol O 8~ - - - - - - - EXISTING EASEMENT ~ U ~ eo DRIVEWAY \ q~ f - - - - - - PROPOSED PERMANENT EASEMENT ~ ~ SITE ACCESS ROUTE ~ $d (SEE NOTE 3) PROPOSED TEMPORARY CONSTRUCTION EASEMENT x ~ N O \ ~ ~ ~ ~ ~ ~ RIGHT OF WAY ~ N a ~ I - - - - - PROJECT AREA ~ \ ~ ~ ~ \ ~ ~ EX. PSDE ~ / ~ o' ~ TEMPORARY COFFERDAM f ~ ~ ~1 I f APPRO)aMATE GABION WALL LIMII~S Q ~ + RIGHT ~ s' ~ f W Z F w Y tiY ' ~ oA ~ o ~ ~ o EXISTING TREE ~ 0 i I ~ ~ 1 f 0 ~ F a o ~ 0 f TR TO BE REMOVED ~ ~ W EXISTING EE (rC \ 1?, a ! ~ WO N> Z ..t 0 q ~ ~ NW ~oCv 4 0 0 TEMPORARY BENCHMARK ~ Q \ N J m = \ ~ o \ \ SILT FENCE .s k°.' ~ Z a ~ 0 I. F ~ o~ ~ v,~:~,.:,,' ~ ~ \ PG,ti.. t ~ i~ ~ ,,ww 0 f * W ~ \ ~ i \ ~ o• ~ 0 \ Z ~ = 0 L7 Y ~ o ?o• \ \ ~ = ~ I-~/~ W ~ + !p, i ~ 0 r ~ \ \ DRIVEWAY EASEMENT - ~ •C = . W ~ \ fir, x V ~ ~ \ ~ o~ \ \ • ~ ~ , W ~ O ~ py s. ~ 0 ~ 8 i \ -9,f. ER ~ Z ,rt„ t N J \ ~ ~ Zoe ~ ~ 1 m \ ~ ~ \ \ t ~ ~ GRAPHIC SCALE ~ ~ ~ \ 0 = ~ . W ~o o s ~o zo ,o v ~ \ 1 ~ 1 (IN ter) o co 1 inch = 10 M REFERENCE; BASE MAP FROM SURVEY PERFORMED BY ISAACS GROUP; DATED JANUARY 19, 2005. • ~ - • ~ V' I ~ i \ ~ ~ ~ ~ ~ \ ~ ~ ~ ROCK RIP RAP NCDOT \ i~~ ~ ~ \ 6' ~ , I t I ~r - " ~ V - s ~ ~ ~ ~ \ i CLASS 2 d50-14 ~ \ 653 ( ) / \ SEE DETAI \ 1 ~ ~ ~ \ I / \ ~~•i' ~ ~ ~ TEMP ARY &OF'FERDAM ~ I 1 \ ~ ~ '.~h. ~ ~ ~ -l, ~ I 26.0' STA. 10+42.6 ~ ~ ~ ~ ~ ~ ( ~ ~ -h : - N 525 898.04 ~ \ ~ ~j ~ ~ ~ j, . , 6~ ~ ~ a. E 1,457,658.60 „ t ~ \ 4 - IA. HOPE CORRUGATED \ ~ \ - OJ CTION OF RO - PR E CK R P ~ RAP SURFACE AROUND 3.0' VARIES VARIES 10' to 12' TYP. ~ ~ ~ / ~ I \ TEM DR Y STORMWATER PIPES. ~r F I I ~ \ ( ) EXISTING GARAGE ..r ` ~ - EAST END OF GABION WALL ~ ~ 1 ~ EX ND-DOWN EAM BEYOND n ~ 1 a fl; 6 / ~ t ~ "~ti. WORK AREA " \ - - - PVC COATED, GRADE TOP OF - ~ ~ 1 ROCK-FILLED GABION BASKET SEE PROFILE BACKFlLL TO MEET w" ~ I PROPERTY 9 1 . ) ~ FOR ELEV. VARIES • - (SEE SCHEDULE THIS DWG) EXISTING SURFACE 6 ~ ~ BOUNDARY ~ . ~ r^ ~ ~ ~ ~ , ~ I \ , I . r _a I • I O~ ~-1- - r i I I ~ ~ LEVEL 3, H = 3' ° y \\j\\\\\j 6" APPROVED SOIL CAPABLE OF ~ ~ . ~ SUSTAINING VEGETATIVE GROWTH 5~. ` - \ '66 .5 666.0 ' f . 664. ~ - GATED, 29.5' ° 18" COMPACTED ~ M ~ ~mm~ ~ SOIL BACKFlLL ~ f:A m N n ~ - - ~ ~ \ i OCK FILLED GABION BASKET 664 ~ ~ ~ ~ \ ~ ~ E EDULE THIS DWG) 6 ~ ~ o w °0 01 6 ~ ZN ~ M ( STA, 10+56.0 ~ ~ ~ % 1`-- _ - 62 6 \ STA• 10+04.5 .n . N 525 898,17 6 .5 661' , ~ ~ 66 ~ STA. 0+18.6 Viz-,, .r 62 / LEVEL 2, H = 3 o EXISTING GROUND SURFACE a . N I ' % ° (SLOPE VARIES) ~ m N •0 ~ / N 525890.91 ~ r ~ - _ ~ N 52 887.80 E 1,457,645.18 fp ~ ~ ~ ~ 6g E 1,457,693.85 i ~ ~ ~ ° ZZ~IA ~0 \ ),S E 1, 7,660.21 ° COMPACTE GRAN R w ' o ~ D ULA BACKFlLL p~ vo , i / EXISTING ° NCDO A H ~ n T 7 W S STONE COMPLETE GABION BASKETS SHOWN. IF ~ ` 6 6 ~ RFA ~ ( ~ ) ~ 6' J GROUND SU CE ~ ~ ~ ° o o W 4 ~ ~ LEVEL 1, H - L5 OR 3 OR' r,~ p,, w rr z x OMPETENT ROCK IS ENCOUNTERED OVER 6 , ~ ~ 4 \ ~o s LAST SEC110NS OF GABION WALL, THE tp , 6q ~ ~ ~ ~ ° i aoa INDIVIDUAL BASKETS SHALL BE CUT AS STA. +44.0 ~ ~ ~ ~ (8!E ) NCDOT TYPE 2 GEOTEXTILE FABRIC ~ N ~ nz. - v • o n ~ rn NEEDED TO MEET ROCK SURFACE. N 525 98.33 ~ ~.i~~ / " ~R`OCK-Rlfz$AP,~NCDOT ~ - a ; E 1 4 657.18 ~ "a ' ~ V ~ • ~ ~ ~ / LASS 5b'=1 ` a+ ~(d\ 4~ / CONCRETE LEVELING PAD , ~ / ~ 69,0. / _ ~ i _ ~ ~ ROCK RIP RAP, NCDOT pR0 (3600 PSI) 40 WIDE PUBLIC ~ . - ^ - - • 7T ~ ~ / / ~ ~ CLASS 2 (d50 = 14") SEE FlLE 3.0' ~ ~ ~ FOR ELEV. 1'-LONG 0.5"-DIA. STEEL DOWEL GROUTED 6' INTO CONCRETE ~ STORM EASEMENT - ~ _ ~ ` / ~ / c STA. 10+00.0' ~ ~ (WHERE INDICATED ON N 525 890.23 GABION PLAN VIEW) 6.0 AND/OR ROCK AND ATTACHED TO GABION WIRE BASKET (TO BE PROVIDED AT JUNCTION BETWEEN BASKETS, 3 O.C, TYP•). MAY E 1,457,698.30 ALTERNATIVELY BE INSTALLED DURING CONCRETE PLACEMENT ~ ~ ~ ` AREA BEHIND GABION ALL TO BE ~ ~ i~ ` ' ~ ` - ~ ~ FILLED WITH COMPAC GRANULAR ~ !p _ \ i 'SETA. 10 .0 ~ ~ ' / ~ ~ _ ~ ~ N 525 0.94 ~ ~ BACKFlLL (N OT X57 WASH ~ ~ ` ~ ~ - 2 a-LEVEL OABION WALL DETAIL ~ ~ A 1 " / ; ~ ~ E 1,45 695.38 STONE) ND QOVERED WITH 8 ~ SCALE: i =4 ~ CO PAC ~ SOIL AND 6' SOIL \ ~ ~ STA. 10+16.5 ~ M i N 525 887.63 ~ ~ C ABLE ~ SUSTAINING I / ~ ~ / VEGETATIVE GROWTH SM 0TH GRADE E 1,457,682.31 0 T ~ ~ APPROXIMA VERTICAL FACE OF CENTER TOPMOST ~ ~ ` EROSION FE RE NOT REFLECTED LEVEL OF ION UNIT OPMOST UNIT ~ PROPOSED TEMPORARY ~ ~ ` TOPOGRAPHIC SURVEY PROPOSED PERMANENT / CONSTRUCTION EASEMENT \ ~ / ~ ~ 1 EASEMENT ~ ~ 0 ~ PROJECTION OF ROCK RIP . ~ RAP SURFACE AROUND 3.0' VARIES VARIES (10' to 12' TYP.) EXISTING GARAGE BASE MAP FROM SURVEY PERFORMED BY ISAACS GROUP; / ~ \ , ~ WEST END OF GABION WALL DATED JANUARY 19, 2005. / ! ~ ~ . . ` ,r PVC COATED, GRADE TOP OF ROCK-FILLED GABION BASKET SEE PROFILE BACKFlLL TO MEET ~ 1 PROP08ED OABION WALL PLAN (SEE SCHEDULE THIS DWG) FOR ELEV• EXISTING SURFACE 1 SCALE: 1 =4 - - - - - - - - - - A Y;. 674 i - _ ; _ _ i ~ I ' 674 " LEVEL 4, H = 3' /\\j\\j\\ \\j~ 6 APPROVED SCtI CAPABLE OF i ~ I I I SUSTAINING VEGETATIVE GROWTH o i 1.0 vVAiVAiVA \ ~ i i 672. ~ ~ I 1 a" coMPacTEo 672 SOIL BACKFlLL i ~~I BEND BEND ~ END o ~ ~ I ! ~ ~i LEVEL 3, H = 3' v o 670 ~ ~ I ~ ~ f i ~ !PVC COATED, ' ~ 670 ~ ~ 1.0 ° V 69.' V ~ _ ELE . ¢ 0 ~ ~ , ROCK FLLED GABION BASKET;, ,I~ - , ~{'"t~; , ~ ' I - o ° ~ ~ ~ (SEE SCHEDULE THIS DWG ° EXISTING GROUND SURFACE ON BASKET, - W _ ~ ) i t, ~ _ _ . .-..i _ _ - ~I 1 ITS DWG i ° ~ ; (SLOPE VARIES) ~ - ~ V 666 o COMPACTED GRANULAR BACKFlLL Z W "i = ~~C ,1 _ ~ ~-r. LEVEL 2, H 3 Z (NCDOT X57 WASH STONE) O m "1 666 ~ _ I~` ~ , ~ WZ_ d' , ~ ~ i _ _ ~WF- O ~ O ° ° L/ C ° ~ ! ° I ss6 h _-•ransTwG o - ~ h w ~ SEE ~7l c ' .,,-5 1 I o O c ~ o ° C i c ! I NOTE 3 '~'~i I~.,~,. C ` ~ ° ~ ~ ~ ° I ~ 1~ W GROUND SURFACE _ ~ Z ~ W _ W ~ N Ifs ~ LEVEL 1, H - 1.5 OR 3 ~ ~ . ; ° r r~ ~ 7~ 7 ~ v c• _ _ ~ _ c - _ _ 664 ~ i ~ / y 01 ° o ° - - ° - _ o ° ° ° 664 ~ Z J I- _ 1 ~ O ~r ~ IIt NCDOT TYPE 2 GEOTEXTI F IC ~ c ~ ~ lJ: ABR 1 - ~ ~ ~ r ° ~ ° p ° ~ ,i hJ /~f l ` ~ O O O ti • ~ m ~ m W h - e 662 - - ELEV• 661. C5~ - .d ° ss ~ ~D _ ~ ~ _ _ CONCRETE LEVELING PAD J I• ~ Q ROCK RIP RAP, NCDOT ~0 p~ J W _ SEE PROFLE 3.0 ( ) . y /y \1 0 o f ~ J o ti ° ° .r,~ ; ° ° r I - ° h CLASS 2 (d50 - 14) iii 'C i 660 (WHERE INDICATED ON FOR ELEV, 1-LONG, 0.5 -DIA. STEEL DOWEL GROUTED 6" INTO CONCRETE ~ ~ 660 ~ 'PVC COATED, ; , ° o ' AND OR ROCK AND GABION PLAN VIEW) •0 / ATTACHED TO GABION WIRE BASKET (TO BE c ROCK-FILLED G~?BION BASKET I ' , o o„ o c t ~ ° ° c ° ~ PROVIDED AT JUNC ' ° NOTE 3 ~ 110N BETWEEN BASKETS, 3 O.C. TYP.). MAY ALTERNATIVELY BE INSTALLED WRING CONCRETE PLACEMENT (SEE SCHED LE THIS DWG) ~ _ _ ° I c ° w 658 - ----f - - ° ~ - - - - ° 658 1'- ONG 0.5'-DIA.~ STEEL DOWEL ROUTED 6" TNT CONCRETE I ~ ° ° - ~ ° , 1 ~ o ~ ~ ~ p ~ ELEV. 657.0 - ° - - ° 0 ° a 4-LEVEL oAeION WALL DETAIL AND/OR ROCK ATTACHED TO GABKIN WIRE ,$ASKET (TO ° c ° ~ c ' ° ' o ~ ° o I o.c. TYP.~ . ~c PROVIDED AT;JUNC110N BE EN BASKETS, l SCALE: 1 =4 656 - - - - V. 655.5' o _o. ~I l ° ~o ° ° v ~C o 656 NOTES: ' i I ° ' ~ 1. CONCRETE LEVELING PAD AND EXISTING GROUND SURFACE NOT SHOWN FOR 'CLARITY. c ~ ~ i ~ F r~ 2 ELEVATIONS SHOWN CORRESROND TO TOP 0~ BOT1D~1 OF G~~ION BASKS., I ~ ' ~-,o r 654. ~ U ~ 654 ~ A 3. COMPLETE GABION BASKETS SHOWN. IF COMPETENT ROCK I ENCOUNTERED{OVER LAST SECTIONS OF GABION ALL, THE INOIVI UAL BASKETS ALL 8E CUT S ~ 0 ~ Q ~ E V. 65 .5' ' . ~ ° ELE NEEDED TO FEET ROq( ACE. ~ ~ I - ° ~ ~ ~ Q ELEV. 652.5 652 _ - ~ I j ~ I 5-LEVEL 4-LEVEL 652 ~ :VEL ~ xx I 3-LEVEL G ION WALL (SE DETAIL 2 4-LE L GABION WALL (SEE DETAIL 3 GABION WALL GABION WALL I WALL B F (SEE DETAIL 4) (SEE DETAIL 3) , TAIL 3) ~ a ' 1 650 ~ 3.0' VARIES VARIES 10' to 12' TYP• " 650 10+00 10+20 10+40 ( EXISTING GARAGE a 10+60 FOR ELEV. , , ~w A A PROPOSED t~ABION WALL PROFILE PVC COALED, GRADE TOP OF ROCK-FILLED GABION BASKET BACKFlLL TO MEET y, Z SCALE: 1 =4 (SEE SCHEDULE THIS DWG) EXISTING SURFACE $ ~ rA tix o GA GABION BASKET SCHEDULE - - - - - - - - - - m " 0 MATERIAL REQUIREMENTS: INSTALLATION REQUIREMENTS: LETTER DIM. ~ a DIMENSIONS (FT) ~ CAPAgTY LEVEL, 5 H = 3' \ 6 APPROVED SOIL CAPABLE OF ~ QUANTITY• C ~ o / / ~ a CODE* LENGTH 1, GABION BASKETS SHALL BE PVC-COATED, 8"x10" DOUBLE TWISTED S1EEL WOVEN VNRE MESH AS PRODUCED 1. GABIONS SHALL BE ASSEMBLED AND INSTALLED IN ACCORDANCE WITH MANUFACTURER'S RECOMMENDATIONS. LENGTH WIDTH HEIGHT SUSTAINING VEGETATIVE GROWTH ~ i~ ~ , 1.0 " BY MACAFERRI, INC. OR AS OTHERWISE APPROVED BY THE ENgNEER. 1HE GABION BASKETS SHALL BE 6 18 COMPACTED 6 3 3 46 2 S01 L BACKFlLL GRAY OR SILVER IN COLOR AND SHALL BE OF THE lET1ER CODES NrDICATED ON THE DRAWINGS. 2. ASSEMBLY OF THE BASKET'S SHALL BEGIN WITH THE CONNECTION OF THE FOUR CORNERS, FOLLOWED BY 1HE INTERNAL DIAPHRAGMS TO THE OUTSIDE WALLS, USING THE MANUFACTURER'S APPROVED LACING WIRE 2. ROCK FOR THE GABIONS SHALL BE HARD, ANGULAR TO ROUND AND RESISTANT TO THE AC110N OF WATER. OR FASTENERS. LACING PROCEDURES SHALL ENTAIL TWISTING THE LACING WIRE TO THE WIRE MESH AND 6 _ z, ° 6 3 1.5 7 1 LEVEL 4, H- ~ ° r-: THE ROCK SHALL HAVE A MINIMUM DIAMETER OF 4 INCHES AND A MAXIMUM DIAMETER OF 8 INCHES. UCING WITH ALTERNATING DOUBLE ANO SINGLE LOOPS THROUGH EACH MESH OPENING, PUWNG EACH LOOP r_ t.o Z " 11GHT, AND SECURING THE END OF 1HE LACING WIRE TO THE MESH. * LETTER CODE CORRI 3. GEOTEXTILE FABRIC SHALL MEET THE REQUIREMENTS OF NCDOT 11fPE 2 FABRIC AS SPECIFIED IN STANDARD TER CODE CORRESPONDS TO MACAFERRI INC. PRODUCTS. ° ~ J = , ~ 3. FOLLOWING ASSEMBLY OF THE BASKET THE EMPTY OABION SHALL AE PLACED AND SECURELY JOINED "DOES NOT INCLUDE SPECIFICATIONS FOR ROADS AND STRUCTURES , NCDOT. 5 NOT INCLUDE BENDS AND/OR PARTIAL UIrU15~ ° 4 J ~ • ~ • • EfgSTIND GROUND SURFACE ~ TOGETHER WITH ADJACENT BASKETS ALONG THE TOP, BOTTOM, AND VERTICAL EDGES USING THE SAME LEVEL 3, H = 3' ° r'.' . (SLOPE VARIES) ~ W ~ ° - N> 4. CONCRETE SHALL HAVE A MINIMUM 28-DAY COMPRESSIVE STRENGTH OF 3600 PSI. UCING PROCEDURES. THE GABION SHALL BE FILLED WITH ROCKS IN STAGES TO AVaD DEFORMATIONS OF ~ 1HE CELLS BY LIMITING THE FILL DEPTH TO NO MORE THAN 1-FOOT HIGHER THAN 1HE ADJACENT CELL. 1.0' COMPACTED GRANULAR BACKFlLL ~ ~ ~ 1HREE-FOOT HIGH GABIONS SHALL BE FILLED IN 3, 1-FOOT LAYERS WITH CONNECTING WIRES BETWEEN , Z OC _ (NCDOT X57 WASH STONE) ~ v 4 EACH LIFT. 1.5-FOOT Hlgl GABIONS SHALL BE FILLED IN 2, 9-INCH LAYERS WI1H CONNECTING WIRES BEIYrEEN EACH LIFT. CARE SHALL BE EXCERCISED DURING ROCK PLACEMENT TO ASSURE THAT THE C M1 O O ° - W OD = 1. SURFACE IRREGULARITIES, LOOSE ROCK AND UNSUITABLE SON, AND VEGETATION SHALL BE REMOVED FROM PVC-COATING IS NOT DAMAGED. ROCK SHALL NOT BE PLACED FROM A DROP HEIGHT EXCEEDING 3 FEET. • m ~Zi- LEVEL 2, H = 3 0 GABION BASE. 4. THE LAST LAYER OF ROCK IN EACH BASKET SHALL BE UNIFORMLY PLACED TO CREATE A LEVEL SURVACE. EXISTING o = s'•r I; ~ ~ Q GROUND SURFACE ~ ° NCDOT TYPE 2 GEOTEXTILE FABRIC ` ~ " ' ,r • . ~ ~ . CONCRETE LEVELING PAD SHALL BE PROVIDED DUE TO SURFACE UNDULATIONS. BENCHMrG SHALL BE WHEN THE BASKETS ARE FILLED, THE LIDS SHALL BE PULLED TIGHT AND 11GH1LY LACED TO 1HE TOP OF . C7 Z 0 ° ~ ,II. ~ c~ N ~ , Z ~'j i 2 PERFORMED AS NEEDED TO ACCOMMODATE THE CONCRETE LEVELNG PAD. THE DIAPHRAGM. LEVEL 1 H = 1.5' / ° "~ceoou~' t~'` W J~ ~ ~ Z 3. THE SURFACE SHALL BE INSPECTED ANO APPROVED BY THE ENGINEER PRIOR TO PLACEMENT OF CONCRETE 5. WHERE INDICATED ON THE DRAWINGS, GAPS SHALL BE CONSTRUCTED USING PVC-COATED WIRE MESH THAT ' CST W W > W r. .Y LEVELING BASE AND CONSTRUCTION OF GABIONS. IS SPLICED TO THE ADJACENT GABION BASKETS. THE GABIONS SHALL BE CUT, FOLDED AND FASTENED ~ ~r ~ ~ O TOGETHER TO MEET SITE CONDI110NS. ANY RESHAPED GA810NS SHALL BE INSTALLED, ASSEMBLED, FlLl.ED, CONCRETE LEVEUNG PAD ~ ROCK RIP RAF NCDOT Z r 4•CONCRETE LEVELING PAD SHALL BE CONSTRUCTED UPON CLEAN SUBBASE. WOOD AND/OR PREFABRICATED AND CLOSED AS REQUIRED BY PREVIOUS SEC110NS. ~ FORMS SHALL BE USED FOR CONCRETE PLACEMENT. EARTH FORMS ARE NOT PERMITTED. ' SEE ~ (3600 PSI) Q• N J CLASS 2 (d50 = 14) 3.0 " 0. FOR ELEM. ~ ~ ~ 6. ALL BACKFlLL SHALL ~ PLACED IN 8-INCH LOOSE LIFTS AND COMPACTED. GRANULAR MATERIALS SHALL (WHERE INDICATED ON 1-LONG, 0.5 -DIA. STEEL DOWEL GROUTED 6 INTO CONCRETE m •O' AND/OR ROCK ANO ATTACHED TO GABION WIRE BASKET TO BE ~ ~ ' 5. NOTE THAT COMPLETE GABION BASKETS ARE SHOWN ON THE PLAN AND PROFILE. IF COMPETENT ROCK IS BE COMPACTED TO AT LEAST 70R RELATIVE DENSITY (ASTM D2049). SOIL BACKFlLL SHALL BE COMPACTED ENCOUNTERED AT THE END SECTIONS OF THE GA810N WAIL, THE BASKETS SHALL BE CUT AND SHAPED AS TO A MINIMUM OF 95X OF THE STANDARD PROCTOR (ASTM D698) DRY DENSITY AT MOISTURE CONTENTS GABION PLAN VIEW) ~ ( PROVIDED AT JUNCTION BETWEEN BASKETS, 3 O.C. TYP.). MAY a' _ .~~.v lnr nr m,r nnwunu uw,nw,nr nnum,t NLLULU 10 MLLI IHL KUUK SUKhAL;L. cw ur me urnMuM Muuaivrzr- wnicnj. ALILf%Mm I1YLL1 O[ nJIALLLU LPJKIMIJ LAML LIt MAULMMI E" GENERAL SPECIFICATIONS I w N M 4 5-LEVEL QABIOH WALL DETAIL o SCALE: 1'=4* rn