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Home My WebLink About20180198 Ver 1_Year 1 Monitoring Report_2021_20211215 Mitigation Project Information Upload ID#* 20180198 Version* 1 ......................................................................................................................................................................... Select Reviewer:* Erin Davis Initial Review Completed Date 12/16/2021 Mitigation Project Submittal - 12/15/2021 ...................................................................................................................................................................................................................................................................................................................................................................................................... Is this a Prospectus,Technical Proposal or a New Site?* 0 Yes O No Type of Mitigation Project:* Stream Wetlands Buffer Nutrient Offset (Select all that apply) Project Contact Information Contact Name:* Email Address:* Jeremiah Dow jeremiah.dow@ncdenr.gov Project Information ...................................................................................................................................................................................................................................................................................................................................................................................................... ID#:* 20180198 Version:* 1 Existing ID# Existing Version Project Type: DMS Mitigation Bank Project Name: Sassarixa Swamp Mitigation Site County: Johnston Document Information ...................................................................................................................................................................................................................................................................................................................................................................................................... Mitigation Document Type:* Mitigation Monitoring Report File Upload: Sassarixa_100040_MY1_2021.pdf 24.21MB Please upload only one PDF of the complete file that needs to be submitted... Signature ...................................................................................................................................................................................................................................................................................................................................................................................................... Print Name:* Jeremiah Dow Signature:* • .LTr�-► „.,, ..,, aft::• _-‘, '''.;14 - , , ,•,..:A.,,, l''', : ,,r'''''-O,-4ut.7.,,-r.i F.)..,,i.:',Ze:.,'.li.'r 7.:1.";t1 ' 's'4* %*,, ,.,‘; �jI\ 1: rit Av !'' , 0”, if,4 ft , 1 , , - 1 St , • , '',i k.-.l,-o'..,ik',,i.,,,..--„'.,1,-,E7-.,.,.,:..I. r,, . t;t.....';.. 1ii,t, -c141_,,,a.f..-,-q yF 1 .,-. 4. ' .i ,'1 [' ,,,,,.-g,,.;.,.-%,i -=.-1...1i4 ,.,,...; ,., ,,. i i .__. ...,4 , �"ti 4. • � • , .�. . i MONITORING YEAR 1 SASSARIXA SWAMP MITIGATION SITE Johnston County, NC ANNUAL REPORT Neuse River Basin Final HUC 03020201 DMS Project No. 100040 December 2021 DMS Contract No. 7425 DMS RFP No. 16-007279 USAGE Action ID No. 2018-00432 DWR Project No. 2018-0198 Data Collection Dates: April-November 2021 PREPARED FOR: hri il NC Department of Environmental Quality Division of Mitigation Services 1652 Mail Service Center Raleigh, NC 27699-1652 PREPARED BY: &P WILDLANDS ENGINEERING 312 West Mil!brook Road, Suite 225 Raleigh, NC 27609 Jason Lorch jlorch@wildlandseng.com Phone: 919.851.9986 SASSARIXA SWAMP MITIGATION SITE Monitoring Year 1 Annual Report TABLE OF CONTENTS Section 1: PROJECT OVERVIEW 1-1 1.1 Project Quantities and Credits 1-1 1.2 Project Goals and Objectives 1-2 1.3 Project Attributes 1-3 Section 2: Monitoring Year 1 Data Assessment 2-1 2.1 Vegetative Assessment 2-1 2.2 Vegetation Areas of Concern 2-1 2.3 Stream Assessment 2-1 2.4 Stream Areas of Concern 2-1 2.5 Hydrology Assessment 2-2 2.6 Wetland Assessment 2-2 2.7 Adaptive Management Plan 2-2 2.8 Monitoring Year 1 Summary 2-2 Section 3: METHODOLOGY 3-1 Section 4: REFERENCES 4-1 TABLES Table 1: Project Quantities and Credits 1-1 Table 2: Goals, Performance Criteria, and Functional Improvements 1-2 Table 3: Project Attributes 1-4 FIGURES Figure la-c Current Condition Plan View APPENDICES Appendix A Visual Assessment Data Table 4 Visual Stream Morphology Stability Assessment Table Table 5 Vegetation Condition Assessment Table Stream Photographs Stream Crossing Photographs Vegetation Plot Photographs Appendix B Vegetation Plot Data Table 6 Vegetation Plot Data Table 7 Vegetation Performance Standards Summary Table Appendix C Stream Geomorphology Data Cross-Section Plots Table 8 Baseline Stream Data Summary Table 9 Cross-Section Morphology Monitoring Summary Appendix D Hydrology Data Table 10 Bankfull Events Sassarixa Swamp Mitigation Site Monitoring Year 1 Annual Report-Final i Table 11 Rainfall Summary Table 12 Wetland Gauge Summary Wetland Gauge Plot Table 13 Recorded In-Stream Flow Events Summary Recorded In-Stream Flow Events Plot Appendix E Project Timeline and Contact Info Table 14 Project Activity and Reporting History Table 15 Project Contact Table Appendix F Additional Documentation As-Built IRT Comments Sassarixa Swamp Mitigation Site Monitoring Year 1 Annual Report-Final ii Section 1: PROJECT OVERVIEW The Sassarixa Swamp Mitigation Site (Site) is located in Johnston County, approximately six miles southwest of Smithfield and five miles north of Four Oaks.The Site drains to Holts Lake, which drains to the Neuse River. Holts Lake is a recreational lake classified as a Nutrient Sensitive Water(NSW) and the Neuse River is a water supply for the City of Goldsboro.Table 3 presents information related to the project attributes. 1.1 Project Quantities and Credits The Site is located on 10 parcels under 7 different landowners and a conservation easement was recorded on 65.06 acres. Mitigation work within the Site included restoration, enhancement II, and preservation of perennial and intermittent stream channels.Table 1 below shows stream credits by reach and the total amount of stream credits expected at closeout. Table 1: Project Quantities and Credits PROJECT MITIGATION QUANTITIES Mitigation Mitigation Project Plan As Built Mitigation Restoration Ratio Credits Comments Segment Footage Footage Category Level (X:1) Stream Sassarixa 2 631 2,631 Warm Ell 2.5 1,052.400 Ford Crossing, Fencing Out Creek R1 R3 Livestock T1 R1 570 570 Warm Ell 2.5 228.000 Bank Stabilization, Fencing Out Livestock T1 R2 824 810 Warm R 1.0 824.000 Full Channel Restoration, Fencing Out Livestock T1 R3 509 507 Warm R 1.0 509.000 Full Channel Restoration, Fencing Out Livestock T1 R4 252 252 Warm Ell 2.5 100.800 Fencing Out Livestock T1A 358 356 Warm Ell 2.5 143.200 Fencing Out Livestock T1B 275 276 Warm Ell 2.5 110.000 Fencing Out Livestock T1C 307 307 Warm Ell 2.5 122.800 Fencing Out Livestock T2 1,010 1,006 Warm R 1.0 1,010.000 Pond Removal, Fencing Out Livestock T3 R1 1,053 1,041 Warm R 1.0 1,053.000 Full Channel Restoration, Fencing Out Livestock T3 R2 61 61 Warm P 10.0 6.100 Conservation Easement T4 R1 206 206 Warm Ell 2.5 82.400 Ford Crossing, Fencing Out Livestock T4 R2 398 399 Warm Ell 2.5 159.200 Bank Stabilization, Fencing Out Livestock T4 R3 1,509 1,510 Warm P 10.0 150.900 Culvert Crossing, Conservation Easement T5 R1 670 642 Warm Ell 2.5 268.000 Bank Stabilization Sassarixa Swamp Mitigation Site Monitoring Year 1 Annual Report-Final 1-1 T5 R2 885 874 Warm R 1.0 885.000 Full Channel Restoration, Fencing Out Livestock T5 R3 965 961 Warm Ell 4.0 241.250 Culvert Crossing, Bank Stabilization T5A 1,026 1,018 Warm Ell 2.5 410.400 Bank Stabilization, Fencing Out Livestock T5B 580 580 Warm Ell 2.5 232.000 Fencing Out Livestock T5C1 588 588 Warm Ell 2.5 235.200 Fencing Out Livestock T6 R1 381 383 Warm R 1.0 381.000 Full Channel Restoration, Fencing Out Livestock Culvert Crossing, Bank T6 R2 1,035 1,037 Warm II 2.5 414.000 Stabilization. Fencing Out Livestock Total: 8,618.650 1. T5C Credited using the Headwater Stream guidance method of the valley length. Stream Restoration Level Warm Cool Cold Restoration 4,662.000 Enhancement I -- Enhancement II 3,799.650 Preservation 157.000 Totals 8,618.650 Total Stream Credit 8,618.650 1.2 Project Goals and Objectives The project is intended to provide numerous ecological benefits.Table 2 below describes expected outcomes to water quality and ecological processes and provides project goals and objectives. Table 2:Goals, Performance Criteria,and Functional Improvements Likely Functional Performance Cumulative Goal Objective/Treatment Uplift Criteria Measurement Monitoring Resu Its Cross-section ER stays over 2.2 monitoring will be Construct stream No deviations Reduce sediment and BHR below assessed during Improve the channels that will from design. In- inputs from bank 1.2 with visual MY1, MY2, MY3, stability of maintain stable cross- stream vegetation stream sections, patterns, erosion. Reduce assessments MYS, and MY7 was treated Site channels. and profiles over shear stress on showing and visual wide in channel boundary. progression inspections will time. September 2021. towards stability. be assessed annually. Sassarixa Swamp Mitigation Site Monitoring Year 1 Annual Report-Final 1-2 Cumulative Goal Objective/Treatment Likely Functional Performance Measurement Monitoring Uplift Criteria Resu Its Install habitat Increase and features such as diversify available constructed riffles, habitats for lunker logs, and brush macroinvertebrates, There is no Improve required toes into fish, and instream performance N/A N/A restored/enhanced amphibians leading habitat. standard for this streams.Add woody to colonization and materials to channel increase in metric. beds. Construct pools biodiversity over of varying depth. time. Four bankfull Bankfull events Reconnect events in documented on Reconstruct stream channels separate years all reaches during channels with Crest gauges with Allow more within MY1. Greater than designed bankfull and/or pressure floodplains frequent flood monitoring 30 consecutive to allow a dimensions and depth transducers flows to disperse on period. days of flow based on reference recording flow natural the floodplain. 30 consecutive recorded on all reach data. Remove elevations. flooding days of flow for intermittent regime. pond above T2. intermittent streams during channels. MY1. Reduce sediment Survival rate of One hundred 10 out of 11 inputs from bank 320 stems per square meter vegetation plots Restore and Plant native tree and erosion and runoff. acre at MY3, 260 vegetation plots have a planted enhance Increase nutrient planted stems understory species in are placed on 2% stem density native cycling and storage per acre at MY5, riparian zones and of the planted greater than 320 floodplain in floodplain. and 210 stems plant native shrub and area of the Site stems per acre. and Provide riparian per acre at MY7. herbaceous species and monitored Veg plot 2 has a streambank habitat.Add a Height on streambanks. during MY1, MY2, stem density of vegetation. source of LWD and requirement is 7 MY3, MY5, and 243 planted stems organic material to feet at MY5 and stream. 10 feet at MY7. MY7. per acre. Permanently Protect the Site Visually inspect Cattle protect the from encroachment the perimeter of encroachment Establish conservation Prevent project Site easements on the on the riparian easement the Site to ensure occurred in July from corridor and direct no easement 2021. No cattle Site. encroachment. harmful impact to streams encroachment is have been seen uses. and wetlands. occurring. on Site since. 1.3 Project Attributes The project includes several adjacent properties that have been owned and operated as a livestock farm by a single family since 1850, where livestock were continually rotated through all fields with access to the project streams. Based on aerial photos from 1950 to 2012 onsite streams have existed in their approximate locations with very little change to riparian buffer extents since 1950.Two alterations to the Site visible from historical aerial photography were the addition of the pond on T2 between 1964 and 1973, and the addition of the large pond below T5A,T5B, and T5C between 1950 and 1961. According to the landowners, in the 1960's and early 1970's a hog yard was located at the upstream end of T4 and T5,where the streams were diverted to make a hog wallow area.The hogs were moved to a hog house in the early 1970's, however goats, horses, and cattle had continuous access to this portion of the site until Hurricane Matthew struck in September 2016.The floods from the storm destroyed much Sassarixa Swamp Mitigation Site Monitoring Year 1 Annual Report-Final 1-3 of the fencing around T4 and T5 and livestock have been rotated in other fields since that time while fencing was being repaired. Other portions of the site had not seen significant changes in land use with livestock or crop rotations from existing activities.Table 3 below and Table 9 in Appendix C present additional information on pre-restoration conditions. Table 3: Project Attributes la Sassarixa Swamp Project Name County Johnston County Mitigation Site Project Area (acres) 65.06 Project Coordinates 35.472153,-78.436000 PROJECT WATERSHED • Physiographic Province Rolling Coastal Plain River Basin Neuse River USGS HUC 8-digit 03020201 USGS HUC 14-digit 03020201130030 66%agriculture, 27% DWR Sub-basin 03-04-04 Land Use Classification forested, 7%developed Project Drainage Area (acres) 5,024 Percentage of Impervious Area 0.9% Parameters T1 T2 T3 T5 T6 Pre-project length (feet) 2,202 348 1,098 2,544 1,342 Post-project(feet) 2,155 1,010 1,114 2,553 1,451 Valley confinement (Confined, moderately confined, Unconfined Moderately Confined to Unconfined unconfined) Drainage area (acres) 45 25 26 41.25 38.25 Perennial, Intermittent, Ephemeral Intermittent Perennial DWR Water Quality Classification C, NSW B, NSW Dominant Stream Classification (existing) G5 G5 B5/G5 E5 G5/E5 Dominant Stream Classification (proposed) C5b/E5b C5b/E5b C5b/E5b C5/E5 C5/E5 Dominant Evolutionary class (Simon) if applicable Stage Ill Stage IV Stage Ill Stage IV Parameters Applicable? Resolved? Supporting Documentation Water of the United States-Section 404 Yes Yes USACE Nationwide Permit No. 27 and DWQ 401 Water Quality Water of the United States-Section 401 Yes Yes Certification No.4134. Endangered Species Act Yes Yes Categorical Exclusion in Mitigation Historic Preservation Act Yes Yes Plan (Wildlands, 2019) Coastal Zone Management Act (CZMA or CAMA) N/A N/A N/A Essential Fisheries Habitat N/A N/A N/A Sassarixa Swamp Mitigation Site Monitoring Year 1 Annual Report-Final 1-4 Section 2: Monitoring Year 1 Data Assessment Annual monitoring and site visits were conducted during MY1 to assess the condition of the project.The vegetation and stream success criteria for the Site follow the approved success criteria presented in the Mitigation Plan (Wildlands, 2019). Performance criteria for vegetation, stream, and hydrologic assessment are located in Section 1.2 Table 3: Goals, Performance Criteria, and Functional Improvements. 2.1 Vegetative Assessment The MY1 vegetative survey was completed in September 2021. Vegetation monitoring resulted in a stem density range of 243 to 607 planted stems per acre and average stem density was 504 planted stems per acre. Out of the eleven vegetation plots, ten met the interim success criteria of 320 stems per acres, while Vegetation Plot 2 has 243 stems per acres and is on track to meet the final success criteria of 210 stems per acre. A more thorough visual assessment will take place in the area near Vegetation Plot 2 in Spring 2022 to assess the survivability of the planted trees and resprouts. Refer to Appendix A for Vegetation Plot Photographs and the Vegetation Condition Assessment Table and Appendix B for Vegetation Plot Data. There were a significant number of mature hardwood trees that were left untouched from construction. A visual site assessment in November 2021 indicated that mature hardwood trees in construction areas have survived. Planted trees and volunteer species are growing throughout the Site and starting to fill in an understory that will eventually become a mature hardwood forest. .2 Vegetation Areas of Concern Before construction, Chinese privet (Ligustrum sinense) was treated along Sasssarixa Creek during the winter of 2020/2021 using a combination of methods including foliar and cut stump applications. Out of the 27.00 acres that was originally treated, resprouts did emerge along the lower half of Sassarixa Creek totaling 11.99 acres (Figure la). A follow up treatment will occur during MY2 to treat the resprouts. Several cattle were observed within the Site throughout July 2021. Cattle had access to 11.39 acres of the Site between the Sassarixa Creek ford crossing to the top of T1 (Figure la). The cattle were entering the Site through the high tensile fence along the Sassarixa Creek ford crossing.The landowner has agreed to keep the outside gates closed unless supervising the cattle crossing Sassarixa Creek. No cattle have been seen in the easement since July 2021, indicating the easement encroachment has been resolved. No major damage occurred to the Site due to cattle encroachment, except for several dented easement signs. 2.3 Stream Assessment Morphological surveys for MY1 were conducted in July 2021. All streams within the Site are stable and functioning as designed. All 10 cross-sections at the Site show little to no change in the bankfull area and width-to-depth ratio, and bank height ratios are less than 1.2. Refer to Appendix A for the Visual Stream Morphology Stability Assessment Table and Stream Photographs. Refer to Appendix C for Stream Geomorphology Data. 2.4 Stream Areas of Concern The spring and summer of 2021 had below average rainfall. Due to dry conditions and lack of shade before woody vegetation has become established, Murdanina (Figure la-b)was observed in most tributaries. Wildlands was proactive with in-stream vegetation management and treated T1 Reach 1-3, Sassarixa Swamp Mitigation Site Monitoring Year 1 Annual Report-Final 2-1 T2,T3 Reach 1,T5 Reach 2, and T6 Reach 1 and 2 in September 2021.The treatment was effective and follow up treatments will occur in MY2 to ensure the in-stream vegetation is eradicated. 2.5 Hydrology Assessment By the end of MY7, four bankfull events must have occurred in separate years within the restoration reaches. At least one bankfull event was recorded on all stream restoration reaches.Therefore, the hydrologic success criterion for bankfull events has been partially met in MY1. In addition, the presence of baseflow must be documented on restored intermittent reaches (T1 Reach 2,T2 and T3 Reach 1) for a minimum of 30 consecutive days during a normal precipitation year. In- stream flow gauges equipped with pressure transducers were installed to monitor continuity of baseflow. All intermittent reaches in MY1 exceeded baseflow success criteria.The maximum consecutive days ranged from 44 days to 108 days. Refer to Appendix 5 for hydrologic data. 2.6 Wetland Assessment One groundwater gauge was installed and monitored within an existing wetland zone along T3 at a location requested by North Carolina Division of Water Resources.The purpose of the gauge is to assess potential effects to wetland hydrology from the construction of the restored stream channel through this area. The results of this monitoring are not tied to a success criteria. Results from the groundwater gauge, during MY1, show that the existing wetland maintained free groundwater within 12 inches of the ground surface for 47.5%of the defined growing season (March 1 to November 16). ..7 Adaptive Management Plan As indicated in Section 2.2, 11.99 acres of Chinese privet resprouts will be treated throughout MY2.The management plan will integrate multiple treatment options of cut stump and foliar spray depending on plant height. A follow up in-stream vegetation treatment will occur in the spring of 2022 to treat the remaining vegetation that survived the September 2021 treatment. �.8 Monitoring Year 1 Summary Overall,the Site has met the success criteria for MY1.Ten out of eleven veg plots are on track to meet the MY3 interim success criteria.The area surrounding veg plot 2 will be assessed during MY2 to check for planted tree resprouts and survivability. Mature trees that were avoided during construction are healthy with a new understory layer coming in. Follow up treatments of 11.99 acres of Chinese privet resprouts and in-stream vegetation will occur during MY2.The landowner will keep the outside gates closed along the Sassarixa Creek ford crossing, resolving the July 2021 cattle encroachment. Bankfull events were documented on all stream restoration reaches partially fulfilling the final bankfull hydrologic success requirement. Greater than 30 days of consecutive flow were recorded on monitored intermittent stream reaches T1 Reach 2,T2, and T3 Reach 1 fulfilling MY1 success requirement. Overall, the Site is meeting its goals of preventing excess nutrients and sediment from entering the Neuse River tributaries and is on track to meet final success criteria. Summary information and data related to the performance of various project and monitoring elements can be found in the tables and figures in the report appendices. All raw data supporting the tables and figures in the appendices are available from DMS upon request. Sassarixa Swamp Mitigation Site Monitoring Year 1 Annual Report-Final 2-2 Section 3: METHODOLOGY Geomorphic data was collected following the standards outlined in The Stream Channel Reference Site: An Illustrated Guide to Field Techniques (Harrelson et al., 1994) and in Stream Restoration:A Natural Channel Design Handbook(Doll et al., 2003). All Integrated Current Condition Mapping was recorded using a Trimble handheld GPS with sub-meter accuracy and processed using Pathfinder and ArcGIS. Crest gauges and pressure transducers were installed in riffle cross-sections and monitored throughout the year. Hydrologic monitoring instrument installation and monitoring methods are in accordance with the United States Army Corps of Engineers standards (USACE, 2003). Vegetation monitoring protocols followed the Wilmington District Stream and Wetland Compensatory Mitigation Update (NCIRT, 2016). Sassarixa Swamp Mitigation Site Monitoring Year 1 Annual Report-Final 3-1 Section 4: REFERENCES Breeding, R. 2010. Neuse River Basin Restoration Priorities 2010. NCEEP, NC Doll, B.A., Grabow, G.L., Hall, K.A., Halley,J., Harman,W.A.,Jennings, G.D., and Wise, D.E. 2003. Stream Restoration A Natural Channel Design Handbook. Harrelson, C.C., Rawlins, C.L., Potyondy,J.P. 1994.Stream Channel Reference Sites:An Illustrated Guide to Field Technique. Gen.Tech. Rep. RM-245. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station. 61 p. Rosgen, D. L. 1994. A classification of natural rivers. Catena 22:169-199. Rosgen, D.L. 1996. Applied River Morphology. Pagosa Springs, CO: Wildland Hydrology Books. Rosgen, D.L. 1997. A Geomorphological Approach to Restoration of Incised Rivers. Proceedings of the Conference on Management of Landscapes Disturbed by Channel Incision. Center For Computational Hydroscience and Bioengineering, Oxford Campus, University of Mississippi, Pages 12-22. North Carolina Division of Water Resources (DWR). 2015. Neuse 01 CU Update. River Basin Restoration Priorities Transition Approach. North Carolina Interagency Review Team (NCIRT). 2016. Wilmington District Stream and Wetland Compensatory Mitigation Update. Accessed at: https://saw- reg.usace.army.mil/PN/2016/Wilmington-District-M itigation-Update.pdf United States Army Corps of Engineers. 2003. Stream Mitigation Guidelines. USACE, NCDENR-DWQ, USEPA, NCWRC. United States Geological Survey. 1998. North Carolina Geology. Wildlands Engineering, Inc. (2019). Sassarixa Swamp Mitigation Project Mitigation Plan. DMS, Raleigh, NC. Sassarixa Swamp Mitigation Site Monitoring Year 1 Annual Report-Final 4-1 J I a _j Conservation Easement Stream Enhancement II Reach ki ,« __ . �7 Internal Crossing Stream Preservation •• . Reach 4 Reach ,.k �� - ® Existing Wetlands Not for Credit N;: V ,. .n �;r4 - M Utility Easement Non-Project Streams Fti + "' V. �'_..•- .' 11 •t4 : + Vegetation Plot Condition- Fencing 0,• ' {p + ;a i MY1 Cross Sections II X ; ♦ + �' • IP! • Criteria Met- Fixed b Gates olt• I � ♦� \ y �' tom• , L , +' ��. '•a 1 r � I Criteria Not Met- Fixed 0 Photo Points "t I ' i �� ♦♦ 0 %. 'c _�= !� , Criteria Met- Random '' I ' _ �` � Q Reach Break f•` _ x ! \\ / '`_•'p' ! x 1� .A ! V /r'"' t t.p Stream Restoration I ;�� Reach Reach •9 1_ ` w +� - , _ rU • X e m - x1.e 0 Flig 4 01011Ikei it . .1T . "it 1 .,_ " 1� 0 , -- ;' + �'�• ,Reach 9 ``' at' i '—' , : / / ,' ' , fir. Reach 9 „ . Reach ` . % ' s ♦� ,i 0 0,.,"Reach 9 II ; 0 \V ! �_ x,— ,�u � Reach , iii .. . _ . „ pea x :: Reach B • �'I' \s.. 1)4 / �� •�♦�. III Reach 3 �•� , Ili . �� fi -. _ �,I Figure la. _ g . . Reach 13ci, a, 0 .� 9 3 11 III �' Li � "` Reach�3 i , ^il- y i illi II .b Reach 'll ill" II k Il) \\ Aix . `a4. • - s--4- li • • - 46 ' t - .,. '''''\. .. - :I' ' ICI:1111. . - `3,- 0g� -' �I-'0 ; Reach.3 `' �= , lif. , .• , It.. . . • . • Figure ib. . _ M"' , ,a -- ---------- 2019 Aerial Photography i„,„....,,,, ,,,,..,,, Figure 1.Current Condition Plan View Key 0‘ W I L D L A N D S 600 ,200 Feet , Sassarixa Swamp Mitigation Site idii/V ENGINEERING I I I I I DMS Project No.100040 N Monitoring Year 1-2021 Johnston County, NC 1-_j Conservation Easement Stream Enhancement II Reach 9 Internal Crossing Stream Preservation Existing Wetlands Not for Credit Vegetation Plot Condition- Non-Project Streams MY1 As-Built Top of Bank Reach Q Reach @ I—I Criteria Met- Fixed Structures ., ; '%`O, I— ' I Criteria Not Met- Fixed g Fencing � ♦ �I" O Criteria Met- Random — Cross Sections • TICattle Encroachment- U Gates ts� // / IM O 0 Barotroll / . �,: _M Invasive Area of Concern- x :et••+� i x _ 4,11 :.( . MY1 0 Crest Gauge • • > PP +'� •`t♦.:Y,• , Chinese Privet O Flow Gauge ` P�, yc+ p 16 C, / Groundwater Well p + pp `:. In-Stream Vegetation - / 611' ' / Removal- MY1 Photo Points - r • IP" "+/ • Reach Break x, P10Stream Restoration O l / + 2 - , ,�+ N le.. . •Q 5 A, X + 3/ _,_ ,'x; �l t \a ` k� ` X: ,,, ///, ,0 \\ ' x, 41- I. / / /. i s.\ /' ,.../' � ' _�_or 7 ^mil 41) -40 ' . 7 -., ----"e'..A--- x ,,, �` Reach Reac '`�� El2f121 9 l '/ ll 12 + +7C . lip l ,► 110+00 - " CO o ill �O y""�- x- N - •1. - 11� iO `t ,. ,_ . . O Ye ' ' ■' - � ' , r 17.. 1 / .. II • 0 '':: i Api itedt 41,- IIII ::e:%• X as P !O • ' • 03 • • U : i i +• $ + .Q. H, • . . . . . .• \ _ i ;gip i / i. / J •qi + sr\ y-• ♦ , NL.. i e i ,� • 41 Reach o 1*- Asti♦. /' I' ‘41* ; , , , . ''.: — :♦ a :I/ i' P s 1► Reach Q Reach ! - ,' .".... dr - ---ik - -• 2019 Aerial Photo- Figure ia.Current Condition Plan View bikiwIr W I L D L A N D S 0 200 400 Feet N Sassarixa Swamp Mitigation Site ENGINEERING DMS Project No.100040 II I I I Monitoring Year 1-2021 Johnston County, NC f l 9 $ g-l' S 1a1--�1S 0 L U r 1 lAA1X00 d_; V. ,.. trl.. •• , 4 i� j'• tT'.`— _moo— "♦ , '( ,,,.. 0 I • irk to T::s, 'O .---•- o+ ♦• � t . • ',„ , 0 ♦�g0p`00 vi ` • .• _ . r`1� - ♦` s yOkOp• j 7 41 p a ,II ► •�• - Tom_ _ '.c l ' 1 y . 1 f3 114 xr 1u 9 .46: j �r► i' I tir x PI it.:41 v4. Xt; 1 di /0 IV li 4 t 44 III II `r. I \ - . `-,,% 1 ii610io(K, Q Q '# 1 Y' • 'Or TP - 5 ' 1P I 1 II444*. ...I.4 I A ,. , . . . _ zs '515- b0 I •u f �Op•? • • �`�! iiI „615+00! 11 t >> . • • �ii1��j l elk r Y ., __ 1 • ItriL V. i . U3lyt tO. • 4 ik 1 ::* — , , . f 1• V ; II ' • r • •� * -_j Conservation Easement Non Project Streams �..• k ! j 4 .1 .'ti • 1 lw c +tom i.- 16 k I ii t ' 4.,•, VAti ; • vz Internal Crossing As-Built Top of Bank „ ' j \+ III I ;// ' , ,, ; i II I. M * Utility Easement Structures �� ' x III • �zo+od l� Reach 3 ` �• K72 Existing Wetlands Fencing x X •y'4 , •� Y Vegetation Plot Condition-MY1 Cross Sections �'; x 4 I'' • . -:�i.i ft: • �• T : ' • • �� Criteria Met- Fixed 1 Gates :M•tr A.`4,+ /+ x �r 4 • • In Stream Vegetation 0 Crest Gauge :'r ;<� T =�� • f I 't �' .1 1 Removal- MY1 r w ,�+ � I + r • • 0 Photo Points ... :, * . 5�' /, � . +, $ 1 • ,t , Stream Restoration 0 Reach Break �;� ►; �s ;� g. Stream Enhancement II x •.�S! +�'6.: . �� • % be:* �.. ' ;yr r Stream Preservation �' ti 'Ni Not for Credit 2019 Aerial Photographyil, _ . ,� t ' . .. . Figure ib.Current Condition Plan View bikili/41y W I L D L A N D S 300 600 Feet , Sassarixa Swamp Mitigation Site ENGINEERING DMS Project No.loo040 N Monitoring Year 1-2021 Johnston County, NC \11%11, • 7 liZd '. '41; '*X = =--„., 3 i 1—=-% 1110hit Iry• f • ;. . lik ' ;'1°." % • - ' 11 11 f•:r ‘\4 ► II --11111014 s ill -. 1 , ;emsI ► 0 , ,,,,,iaii.iiissii ......." —W. AA k r _1 Conservation Easement �+ t QO �` ___ _—_ _—_ ® Existing Wetlands` I %\\ • • ` 645+00I Vegetation Plot Condition-MY1 +% n ! \\\\O` d1- Criteria Met-Fixed ��` ___ al I % Stream Enhancement II i \\ '1 = + Not for Credit -1-•� et Non-Project Streams ' —M ` — Amok As Built Top of Bank N 4, = E3 E J Structures 1. g = Fencing MI - * � ; C Gates 0 Photo Points .y Figure lc. Current Condition Plan View 0 W I L D L A N D S 0 100 200 Feet Sassarixa Swamp Mitigation Site ENGINEERING I I I I N DMSProjectNo. 100040 Monitoring Year 1-2021 Johnston County, NC APPENDIX A. VISUAL ASSESSMENT DATA Table 4. Visual Stream Morphology Stability Assessment Table Sassarixa Swamp Mitigation Site DMS Project No.100040 Monitoring Year 1-2021 T1 R2 Number Stable, Amount of %Stable, Major Channel Category Metric Nu Unstable Performing as Performing as Intended A Footage ntended Assessed Stream Length 810 Assessed Bank Length 1,620 Surface Scour/ Bank lacking vegetative cover resulting simply from 0 100% Bare Bank poor growth and/or surface scour. Bank toe eroding to the extent that bank failure appears likely. Does NOT include undercuts that are Bank Toe Erosion 0 100% modest,appear sustainable and are providing habitat. Fluvial and geotechnical-rotational,slumping, Bank Failure 0 100% calving,or collapse. Totals: 0 100% Grade control structures exhibiting maintenance of Grade Control 0 0 N/A grade across the sill. Structure Bank Protection Bank erosion within the structures extent of 27 27 100% influence does not exceed 15%. T1 R3 Number Stable, Total Amount of �o Stable, Major Channel Category Metric Number' I Unstable Performing as Performing Footage Intended as Intended Assessed Stream Length 507 Assessed Bank Length 1,014 Surface Scour/ Bank lacking vegetative cover resulting simply from 0 100% Bare Bank poor growth and/or surface scour. Bank toe eroding to the extent that bank failure appears likely. Does NOT include undercuts that are Bank Toe Erosion 0 100% modest,appear sustainable and are providing habitat. Fluvial and geotechnical-rotational,slumping, Bank Failure 0 100% calving,or collapse. Totals: 0 100% Grade control structures exhibiting maintenance of Grade Control 0 0 N/A grade across the sill. Structure Bank Protection Bank erosion within the structures extent of 14 14 100% influence does not exceed 15%. Table 4. Visual Stream Morphology Stability Assessment Table Sassarixa Swamp Mitigation Site DMS Project No.100040 Monitoring Year 1-2021 T2 Number Stable, Amount of %Stable, Major Channel Category Metric Nu Unstable Performing as Performing as Intended A Footage untended Assessed Stream Length 1,006 Assessed Bank Length 2,012 Surface Scour/ Bank lacking vegetative cover resulting simply from 0 100% Bare Bank poor growth and/or surface scour. Bank toe eroding to the extent that bank failure appears likely. Does NOT include undercuts that are Bank Toe Erosion 0 100% modest,appear sustainable and are providing habitat. Fluvial and geotechnical-rotational,slumping, Bank Failure 0 100% calving,or collapse. Totals: 0 100% Grade Control Grade control structures exhibiting maintenance of 34 34 100% grade across the sill. Structure Bank Protection Bank erosion within the structures extent of 18 18 100% influence does not exceed 15%. T3 R1 Number I Stable, Total Amount of �o Stable, Major Channel Category Metric Number' I Unstable Performing as Performing Footage Intended as Intended Assessed Stream Length 1,041 Assessed Bank Length 2,082 Surface Scour/ Bank lacking vegetative cover resulting simply from 0 100% Bare Bank poor growth and/or surface scour. Bank toe eroding to the extent that bank failure appears likely. Does NOT include undercuts that are Bank Toe Erosion 0 100% modest,appear sustainable and are providing habitat. Fluvial and geotechnical-rotational,slumping, Bank Failure 0 100% calving,or collapse. Totals: 0 100% Grade control structures exhibiting maintenance of Grade Control 0 0 N/A grade across the sill. Structure Bank Protection Bank erosion within the structures extent of 30 30 100% influence does not exceed 15%. Table 4. Visual Stream Morphology Stability Assessment Table Sassarixa Swamp Mitigation Site DMS Project No.100040 Monitoring Year 1-2021 T5 R2 Number Stable, Amount of %Stable, Major Channel Category Metric Nu Unstable Performing as Performing as Intended A Footage ntended Assessed Stream Length 874 Assessed Bank Length 1,748 Surface Scour/ Bank lacking vegetative cover resulting simply from 0 100% Bare Bank poor growth and/or surface scour. Bank toe eroding to the extent that bank failure appears likely. Does NOT include undercuts that are Bank Toe Erosion 0 100% modest,appear sustainable and are providing habitat. Fluvial and geotechnical-rotational,slumping, Bank Failure 0 100% calving,or collapse. Totals: 0 100% Grade control structures exhibiting maintenance of Grade Control 0 0 N/A grade across the sill. Structure Bank Protection Bank erosion within the structures extent of 20 20 100% influence does not exceed 15%. T6 R1 Number Stable, Total Amount of %Stable, Major Channel Category Metric Number' I Unstable Performing as Performing Footage Intended as Intended Assessed Stream Length 383 Assessed Bank Length 766 Surface Scour/ Bank lacking vegetative cover resulting simply from 0 100% Bare Bank poor growth and/or surface scour. Bank toe eroding to the extent that bank failure appears likely. Does NOT include undercuts that are Bank Toe Erosion 0 100% modest,appear sustainable and are providing habitat. Fluvial and geotechnical-rotational,slumping, Bank Failure 0 100% calving,or collapse. Totals: 0 100% Grade control structures exhibiting maintenance of Grade Control 0 0 N/A grade across the sill. Structure Bank Protection Bank erosion within the structures extent of 5 5 100% influence does not exceed 15%. Table 5. Vegetation Condition Assessment Table Sassarixa Swamp Mitigation Site DMS Project No.100040 Monitoring Year 1-2021 Planted Acrea:e 13.03 Mapping Definitions Threshold(ac) Combined %of Planted Acreage Acreage Bare Areas Very limited cover of both woody and herbaceous material. 0.10 0 0% Low Stem Density Woody stem densities clearly below target levels based on current MY stem count 0.10 0 0% Areas criteria. Total 0 0% Areas of Poor Growth Planted areas where average height is not meeting current MY Performance 0.10 0 0% Rates Standard. Cumulative Total 0.0 0% Easement Acreage 65.06 Ma..in: %of ombined tion Catego Definitions Easement Acrea:e Invasives may occur outside of planted areas and within the easement and will therefore be calculated against the total easement acreage.Include species with the Invasive Areas of potential to directly outcompete native,young,woody stems in the short-term or 0.10 11.99* 18% Concern community structure for existing communities. Invasive species included in summation above should be identified in report summary. Encroachment may be point, line, or polygon. Encroachment to be mapped consists Easement of any violation of restrictions specified in the conservation easement. Common 1 Encroachments Noted none Encroachment Areas encroachments are mowing, cattle access, vehicular access. Encroachment has no /11.39ac** threshold value as will need to be addressed regardless of impact area. *Chinese privet(Ligustrum sinense)resprouted throughout an existing mautre canopy forest along Sassarixa Creek. **Cattle accessed the Site in July but minimal impacts were made and the encroachment has been resolved. STREAM PHOTOGRAPHS -,,,,-- . ,'''' .; .,A.r.L(0,1 , �� "a! ti � it a _' 1 {�11' � -"'*�T� � tii ��q s ,'' �l �Il k�� f "e -,5�� . ! •a - I sae' S t._,.4T ti �.�I � �• I{ � � t � ♦•s Y,+,4 k . o aq pep 1 'ra`11t,* ,;. 5 �� ! rs y[; _4 spa a �� '4 a��• ��v f€�' �� - 1 fi �� J�6a .J�,< �d •5��, j -� �r � 1r F' k 4f r ! r n. 4. x ra x �4 } _ ft a a+, r 'i =�, -• '' w ."Y ; y'r• i Elk 1 4' L :1+9 '''',- y 1 f ,:y'{t `y a�g L' {, ,'4' ' _pq' \F -4F •� t d 4t ''Y Y - ''''S't1" ,, ; ),:,,�ai,-- i- :� '!"Y' "aS`r cj�".•ti .7f }�..r, J _ 1 � � ..fir. yot.;.-,,,,, mil° 7J ` I' r y t Y' ''` 1 aa6 :? F9 r m {. .,-.:1- ,L.!,.... r �.*v `s' ty "' � yam' r[Y ia�' -I' ` ,,,,,... ..„_,.._ V--.``,1 .. PHOTO POINT 1 Ti R1—upstream (11/9/2021J PHOTO POINT 1 Ti R1—downstream (11/9/2021) ' t �R � ter •'.tea` � ,..� I � k �� I �'I " At 1 - y . 1f'-- - -f. yy�,. J ti _ n. L�T K d F }�' TT 'ti PHOTO POINT 2 Ti R2—upstream (11/9/2021J PHOTO POINT 2 Ti R2—downstream (11/9/2021) 1.� y it b AA ,ir`i- ,400srpo.-. /°1 .y�}y-+'r--,- t..Y _ 11- j t h.F#0, . ..may. f y , I 'K- � Oft ? ?e t �y ti �A; 3 F ti.} z- ,tea r1 '` 1 sry ^ ,r-.� r ' . It''' r V �t F ^3 Y t y iy J•• '" .d Ax " _€` ': -„4: Fass r y �'c'1 '`',�X'�t I�"a^1�Y{.x � �F�a'4',tih ,-,----,..:2_, � �r��° � -,,,:` S J':`"`�•`3 '6`-' � ; ��`` �'�Y ; '�� r � .t rN' ' .� - la,x FfE °'� i .:0 4ir " 4, j' !'h-� r` ° I4 R i,a .;a�_ €.may""tia i f+' J,. ,� -f ,py x - .�.a r . PHOTO POINT 3 Ti R2—upstream (11/9/2021J PHOTO POINT 3 T1 R2—downstream (11/9/2021) Sassarixa Swamp Mitigation Site Appendix A:Visual Assessment Data—Stream Photographs � • SS e .,", 3-,. ,q ;� a 7... 1 r �) r 'rr rs .- -.Fr- • L —� ,... • • ii q y n�..' � �• ¢ �. .I e+ d J,7 a � �, �' � �S �T v3'€� F � •g � � R � 4'_ p .13 ..., . T.:k. -..: � r � r � � "`"� a 4:2 ¢ • 'F .' #„ .......... ,. I' 4 'ry/f r.�.r.i `t GY " �t'.� S- ._ — _�a r .;. £•a, ram' - 1 F� ' fit' , ti r c,, .4 w -F-v d1} Y . C ' .a 1- e�L. ,ate„ js � .,,.,'�,a�e, 1411 G r ,' y,, e q •f I :" pa,--.,, ,,,,?.....„ . ,. tr "°j ; r ' s , 1 J y'Y.., nR 44fOh t< *. _ 1 fi. i, • ., y x• FL PHOTO POINT 4 Ti R2—upstream (11/9/2021) PHOTO POINT 4 Ti R2—downstream (11/9/2021) r C. jr L• fTx .I - Y\ _ ts • �o t y? v , V. ,.-,, . ; . :„..-- ,.. ,,ty..-,.,, 4.:t7,-- - __ 4-4 ‘4: �l^i v.,- �1' y}k t - � } �,yt' . . .... l_ as Y.:. e \' 5..i1 )Vic.. , .Art i ' l: „ ,y" �` ,• zf3' C�* ...-0:: ,,,,,o';;:;--,,,,,-,:,..„0..iti,„.. PHOTO POINT 5 Ti R3—upstream (11/9/2021) PHOTO PINTO 5 T1 R3—downstream (11/9/2021) 4 , "° � 1. v � • ram` n • { yL i. t ''a rp 4A' ''^'i s iC- iwY .; '�� fff,' 's4 4� C r • •VI -. J �s. „# �� er�{ppr ,t PHOTO POINT 6 T1 R3—upstream (11/9/2021) PHOTO POINT 6 T1 R3—downstream (11/9/2021) Sassarixa Swamp Mitigation Site Appendix A:Visual Assessment Data—Stream Photographs '- „'''''..,-;-t-';',V,,--= l'i.'ti ; Vi r T' '`1 1 ' ' `''j'- 1 ' * ' P ' r • at tr z =.. ' a ' a PHOTO POINT 7 Ti R3 upstream.xx(11/9/2021) PHOTO POINT 7 T1 R4—downstream (11/9/2021) n T &Fj S/,' Paz 1,te ,,. , 9h' yi 4 ,,. A a .:,. sui 4 C o- xA : . ... t Jt `Lk r". 'd - x w a a r k "' t +� _- A 1r — E a' ,• 'dAsF 'ka "d' �4y ' , at e. j. ., tea,. # PHOTO POINT 8 Ti R4—upstream (11/9/2021J PHOTO POINT 8 Ti R4—downstream (11/9/2021) ' µiA �P { r 91 P y ,,• ', ' ' A.,0 • )'°,'t'. , r ' r ,,, --, ,._„,-----„,, 4,:,- ' .„.1,,,,,tx,-,„..:,,,-..,,,e,..f„,,.. , ‘,. .„) _,=-- .. : _ , ,, , „0.:,. .;,, ,.,... .iti,...1.ir,1 _, ,.. ,_-,,,,,,_ . ., . , . ...,„ _„-,, , ,..r. ...T. ,,,..„,. f..„1 _ i ,,,I...i _. ..,..:: , ,,,le ,...1 ,, .4 ., , ,,,, -,., - .,..„,,,...„,„.v.,:t . ,_ _,,, ,t...:,,.1,.,....„.fr_... ._,.. rv;.* v.- ': %ix,.`;.."1 - .,—,' .e. ''''ii,tvit' ix.4', ..far. � • • - ei- -, `,: g fi �4- -i" r r h x ( y •'� �i PHOTO POINT 9 T1A—upstream(11/9/2021) PHOTO POINT 9 T1A—downstream (11/9/2021) Sassarixa Swamp Mitigation Site Appendix A:Visual Assessment Data—Stream Photographs ` 1 ,y.� d fiyr ,R '!'ri.��.¢' �p1, -. ; *: K .s {r 3 r }ma �i - i . ° - Y �Ctf it lw7 8 '"1 y '° h r }ter`. 3- ' ��' Y1� � ..#,,a, 54, , �r k ft.. S } �i - yg 4010 ' t `_ x !d u fIt.., fit`. _. i,-� 1 • t- z�,- I ,' yg �N P see-;r� .� L. �'�"` ` ; K1 � `sue ` _ �` f'� g �C z� x ! ��'i( p" z k:7� fi�i � Y.may 3�'�+'In a u� '�S �f .. , c V r } !r `F �"a,23 T� fah C � a, s� zw , w n = -re R '�'1 i1 x'tR' y 1 k ro,.a ,'.. --g p“` '.',: �� :`did � .�q 6 "L�k.a �'' �,� ��#r`3� � =.-,yt _.�.�a�-. �� '�`J ,� �. �_.. v, �i T'},. Y f. • ..• . 4i ! y r, . �i. tax -' -- v ^ te rII . it +�� r r LT- L .0 y/i y PHOTO POINT 10 T1B—upstream(11/9/2021) PHOTO POINT 10 T1B—downstream(11/9/2021J -..• R ..... aS i k ' �i r )q'je ' krot _ f �� pJ � 4 y/I) di .$1 , $. - it , V � 's� �� 6 �' ..i i ��i' t .lam , 4 ! • t. = i l` y +t PHOTO POINT 11 T1B—upstream(11/9/2021J PHOTO POINT 11 T1B—downstream(11/9/2021) rl. �: oin .le ' 44,r J ss „y `s2F chi, v 8 -sue ,v `fit .,Ss v _ -` . ld. a, r is rF - s : — PHOTO POINT 12 T1C—upstream(11/9/2021J PHOTO POINT 12 T1C—downstream(11/9/2021) tiiii Sassarixa Swamp Mitigation Site Appendix A:Visual Assessment Data—Stream Photographs I '!.. q F 'AID:-; 'S`-i + pg(qIE ,; 3 z o-g' - 4 d � nf } } Ti f $ , ,f £ n fig. J tag � � F i �}yiP I , f c F 1�'1� 1 11'. s 3a _ •� ' r e �r ®g am! , at sir x. yl,,,� 40 % -,b - � fit'� tY� � 9� r`;9 d"IV�. iil - ,, .„.e.A.;.4....:"..!: ,i ,,,,e;,,,i,',1,";7:',. .:;:,:: :;ii.', 4) *7 / 1 ', y+r:• ::. PHOTO POINT 13 Sassarixa Creek R2—upstream (11/9/2021) PHOTO POINT 13 Sassarixa Creek R2—iv,downstream(11/9/2021) t\ ¢, r1y'ta � � ' � , 4 ip .•.�l�i• i .i rw: f t'"' f I ': "F1 I% 4� 3 ' � by�' � s £ I i i E; 1.,, E ?1 � ✓ €t_1$ s E z d 3 y i.}.. } p r. I` I 1 �n w:� ,` 1 ,, Et ! t 9 i1.16/11.. y j 17 _' , fly ofir 4 f 1 ii i � � itl� F -. j' �` €a � 1 aG ��l� If �I r t F .. 4iF 4 ill) il t ;i ' • 1 a. - T r- !P.,- PHOTO POINT 14 Sassarixa Creek R2—upstream (11/9/2021) PHOTO POINT 14 Sassarixa Creek R2—downstream(11/9/2021) ; N,,\tr' i,. 1,,I.s.44.,' r " ' ' ti „ .„ 1„..,. .„,,P p eif iK_, , •S�:Y. �;.1 ,•: , ,,,. , ''.v;; ikAL aiii k. 3 : f 4".! t p _ t it yes 4c 9 \ 1 q�y� h {w �[y ■� t_, ...-3 " . II '�3 4f-j.i ; =Ncy� bp6�\* �I � �•` iCr k1�1R�' � E 1 7 � . 11�41 y$ Ij59 �c' r a 1� 1'i ; '#� III a q i Y 1 G i'` AR, �i Af� 1. 0* �; "" !- -.it' •C ,- ��` µ ,..@n._ •"" sr Q i a ' w - • ._ 7 • ' �.... 1. 1 }" S e - 4 -� �ti • I • F T • fPHOTO POINT 15 Sassarixa Creek R2—upstream (11/9/2021) PHOTO POINT 15 Sassarixa Creek R2—downstream(11/9/2021) Sassarixa Swamp Mitigation Site Appendix A:Visual Assessment Data—Stream Photographs It try P 1 , i -f � e � -PI, L ¢ Fla - F-. • J _ i,114 , ii,..a, , „,,,,,,,,,. , , , , , , , , „. 0 ) ', : 4: ., , jr,itr'-`.. ,.. ,.. ,:s: ' ' si,1,4‘p,*4 i'l A --• 40. - — - -% 1,.. ! , -- : talt. .r.,..-A, ...._ „ , t, . `4 '_ y h* f Yy t+�^ : a CNZ IP `F fT mow. ."nt '' . 4. .. • - ' It -., PHOTO POINT 16 Sassarixa Creek R2—upstream (11/9/2021J PHOTO POINT 16 Sassarixa Creek R2—downstream(11/9/2021J ,„ "•,.,..' ..r,,„-*-°-- . -str ,i., ,.-.,- ,,,ej1116 4f.„.,' ° :'--,,, , 71,,,, ,'..!` i',V-1.0 '— ,;-; ,,. _.'41 IY! ,S '-'!"?.:-' a r 4. V — Y . `•t 7F s'1. 2,�- _ w:i i. �s - •r rs sr tio, y"sue _ i 6` • - \ F_ PHOTO POINT 17 Sassarixa Creek R3—upstream (11/9/2021) PHOTO POINT 17 Sassarixa Creek R3—downstream(11/9/2021J ._,.. ,,r ,, . , , ,,. .. ;, ,. . . . ...., 3� df c i qq 5 t': � . ,.. F . ,,.- , e axa. Sy . if i its . .:z' 'r� ,', PHOTO POINT 18 Sassarixa Creek R3—upstream (11/9/2021) PHOTO POINT 18 Sassarixa Creek R3—downstream(11/9/2021) Sassarixa Swamp Mitigation Site Appendix A:Visual Assessment Data—Stream Photographs as i FTkj^ �t 'a',1 V t' T 3 tl3 r �� J�F� � g n VaY� }��mx��#,r �� : _rz�� .a b X' `' : H ', < P .3 a ur , 7X >rhr 9i b 6 k� -�h.l IFr :4. j'',.,;s y•tf Fx � . .'•�:"4'1 sF. ...x.,,, .,.; rr 2 r gas f .' ,- , ,. , ,t, ,, ,,,.., '-..." , .,-y ri,, 7 , 7,,. 14 t, q -g 4 a sY ~ �lq', �laF o"�. '^'' a � sy ',�YJa --y g4 s y .' r 4h��4 ''F..' J i Jk '�+ Y -- `' qvh 4 Y Y - 'I�` C-�+j� !' ' C # } k° A+; s y'It-, �, I i.h `a l s i�a . -! �, 00 ', r'Pam" X 4 2 "'rk� -R\. . m ji 5- "�'�r m q'�r'., x v M ' .e+ °'A r,�<r E ; 4, F r e• ,„" .r." ' "�„ -ram � �'� + 0 3�'*,..,---106,,,,, z �j`\' =�„ Z,� p r � �- k K j �� R ..',r k �"r �- � �� 4 5 5 _ .,kP - . - x �'4 qM' �' -q r`ref � r, ., ,k vy . r s-- �' � - r g'� ;'. 6 ti 1j a 4 � ASghy4F a. .e.> >. x. R+. r4 rY. J ".e Y .. ,)1 � Pw sg 4ay 41 • ..:, ,Lx,,,i7,.,,,,N11,44,•',',1,"',,..,?..„,-:k` , -',7------- 1.- •4(1 v a >A, a+ I �-+'E ' fit i� '.nq r :�, • ,....r�_ '3"• f,.�r/� 1$ 5, �3 f. yr y kr PHOTO POINT 19 T2—upstream(11/9/2021J • PHOTO POINT 19 T2—downstream(11/9/2021) f r t�• . w #s S Y r z PHOTO POINT 20 T2—upstream(11/9/2021) PHOTO POINT 20 T2—downstream(11/9/2021) • : 3' I 1 � $ e , r \ > •�' c 'e` �!.w_ tfF .a-• _ 8 ,�y i' i u �, ix 04f La g ,, - •f r 1 ti rt„� YG� w s Y.._. f¢ [_. .r. wed: PHOTO POINT 21 T2—upstream(11/9/2021J PHOTO POINT 21 T2—downstream(11/9/2021) Sassarixa Swamp Mitigation Site Appendix A:Visual Assessment Data—Stream Photographs • y / '� r d �Av tn° -.� 4 i _ _ ' C M4"_ '�uyw.d`4Tf1 °`• �A'-: ,,5 .'fib » - a,„ -.R. - , d • r t Y qyt�. 40 - , I I. %"'1 q <"-: t. y F PHOTO POINT 22 T2—upstream(11/9/2021J PHOTO POINT 22 T2—downstream(11/9/2021) 4itilit% A3+�'iw'S- ::.$`- / A'�'N 'a 4- ew1' 'I �40 f 1 wL {� .` . _ • - t wf F x t,;,. '� =1e'�y� s `jam 1 1 r „OIL, ' s' ' tkit r "' d. , �'_•} lti fir, + +6;'/ dtq,ye, 'r" 11 -4, k ( ��u 1_ - - to -""I'- ° i PHOTO POINT 23 T2—upstream(11/9/2021J PHOTO POINT 23 T2—downstream(11/9/2021) 'df h ` I -. C F I 4 go t L a> "ems` Zt. • P. PHOTO POINT 24 T3 R1—upstream (11/9/2021J PHOTO POINT 24 T3 R1—downstream(11/9/2021) Sassarixa Swamp Mitigation Appendix A:Visual AssessmentSite Data—Stream Photographs N. - "‘ ' 'I. . ''':,..,!:.,-•••,...--. 1...•-••-•1__•••••,A.:.,„k. 7-5-4.: 4" _E'..--,,,,,...4--'-..-.,--'1V''.-.., r .-., „, --i.:_---' ,:•.,,."':',,: -.'r. 1 " -:.„-„':,,,-:-.,:',':Fi.::-„;;i.;_;..7.-44„,„,. ,.. „ ....2.•,.4. , -',. ..,44.1.......,4,1.:•:,J ,-%:...%.,.. ,.!T:.. - ,..,_----',„.. ...77m-,,,t_K.a--'-',-,.. L :.---0,.. -,,,,,,4,;-..f.-.,..--,...,.... ..-_,:,..,...-..-,-,...„,----.::v7--.,.:r.,-,,. .-r f y• R 4, YJ ,, - k $. X 'C1/ *A ' 3 R + r �_. q, 1 a F yam.,-, ' " F~ ' -,..vL-'k..' a 4ti X 3 4 w r $ , r 44F #)t xt i l ' + ' ,� y ? rte." l rA v 0'1 -ae k, >y ,f +ems ; ' +9r .- • ' ° ri -}., '0 ,L 3`•'hfi'�n st'A f R yrrr _.I t.4' LS f'✓Y''' ' ' ,- Ada"^°` y PHOTO•POINT 25 T3 R1—upstream (11/9/2021) PHOTO POINT 25 T3 R1—downstream(11/9/2021) T 'I" + 1 �Ee, I + -1 1 r i', ,n !' y r e'.. # tA—_4 ■ 1 - e i �.• - , : .• t ,: ifix� a. f { ( ;yak, Lk >+y 7. y. S s'_ P 4i'. y`G• ... 6 • s • �;_� : ,,t PHOTO POINT 26 T3 R1—upstream (11/9/2021J PHOTO POINT 26 T3 R1—downstream(11/9/2021J yr: -- _. - " •-• 401,t, -+T-' - A • • • .ms �`e �•� - ....;;;I:,..' 1' "'.i > 'r. \ - ?low. "off `� 1...� PHOTO POINT 27 T3 R1—upstream (11/9/2021) PHOTO POINT 27 T3 R1—downstream(11/9/2021) Sassarixa Swamp Mitigation Site Appendix A:Visual Assessment Data—Stream Photographs 11.1 !..„)y T _ , . e a .4 I F ! .114 }'7 " 1 V r ,., , ,,,, t. , i . . t 9w tt' ka +t r t l .„...., ,,,,,... , , ,,,, + ,_ ,,,, ,. __. ,- - - rd,. .. ''a —rsa „� ' .�° 'ra E,. _x ua- a - t! ,.�, a3S •-� ��- f ''A p -� Y - "� 9Mr'a . x , .+sY . , PHOTO POINT 28 T3 R1—upstream (11/9/2021) PHOTO POINT 28 T3 R1—downstream(11/9/2021J •t r ,l ,, .,� c tr, ya +' s "` :„ b T of r'. .g j . f 1i a �I a F 4++i Lid 3 _ u 1 4,44: 1 .4� .i f-* � A. t Sw 6i'r gv 444. om .! . �. F b` b A �' + F� F � rt T PHOTO POINT 29 T3 R2—upstream (11/9/2021) PHOTO POINT 29 T3 R2—downstream(11/9/2021) x �"1„ t a,,' -V c L' �-• • emu. ens �� ,, i :',..v.,:t, i,,,,,,.J.;.,-t.; - it-,1..',,r..,- ... .,-'f,..,,.-i . -1,1 ],-'4,'-',-,:,;(,-,:' - - t,te -t, ,,t, . ,� w 4: FAN' 3 3 • a. ,. yu. ..r.,,,t .g• •''-_,' " -,-,„ 7-4,61#;:i.:1_, log.„,46.,, ,I, — , . _._ .. PHOTO POINT 30 T4 R1—upstream (11/9/2021) PHOTO POINT 30 T4 R1—downstream(11/9/2021) Sassarixa Swamp Mitigation Site Appendix A:Visual Assessment Data—Stream Photographs > �+ AVie t �� ♦;� 1; t o a„ • � " v t'.. , 4 F Tr . *04,7,- ,,. - ,,tf;.• .k,•4?--'',''' '''''''''A.' ,,,,,,k „.. .., _ 71'. '777d:'' ' - - ' ''''' W''''76 ' . '- *W4114.41i ' ' • ....-- -'' .1,0,.- „el: - , -.., ,---::•-,--t---7.6---,- , - — , . , . _ _ „A....,,.-,,- -,4*-,..„, _, , ,,_._, ,,,,-:, ,,,,,,,,t . ., : . _ . . ..„ .,,. . ,,. .,,,,..„ - , , ..,—. s„,,, ,, 1 r = , - -, " ., „At d 7 t4 { � mot% • `V- PHOTO POINT 31 T4 R2—upstream (11/9/2021J PHOTO POINT 31 T4 R2—downstream(11/9/2021) _ • �y .f1 4, i Ifs • :II 3. - u"- ",� �, sir r `� :'"d.r's,F �'. �-"- €rS1� 3 'a f r r a * .4 T,-4 I. PHOTO POINT 32 T4 R3—upstream (11/9/2021J PHOTO POINT 32 T4 R3—downstream(11/9/2021) — .„, i 1,, . • , 1 4 .. wAll 4 yws1 a _V 'T 11 fi' "' 7,x re Fpj M# 4. 'tip sae. �b�.�,• ��. � ,�� y, ✓��.t. L� _ p,. E f.r,�o� -r , _ .'A S , l'l a 't om, PHOTO POINT 33 T4 R3—upstream (11/9/2021) PHOTO POINT 33 T4 R3—downstream(11/9/2021J Sassarixa Swamptiiii Mitigation Site Appendix A:Visual Assessment Data—Stream Photographs 1Ay yy " k . 4 s� i f g � -s .-. p• «Q 7�. � 140—'-'4$4i .: '' '''''likf VIC- Ak-'44';';'''''s . ''' 4., I it,''' '.1°I', '1= ,. s.' . `1:144.-1 .,;- .:'-e-:' ' ,, te.i,;01al..-1!'1* 4., -•-' ..1-' ' +.1:-'' ;41, '4.''', ' ''-' ' - ',,4410'`..' '' .2‘_. 41L'- .r--N,"'„7,, _,,. 1-1,Lt,. - ,..'7:le'''. ' : . * '''' • il ,i-: -,%.,11 ht": '..". ••4,. .1•41: ;,-i,4,-,,:r',.,1_,,,:4,-...-f. 1 iV.;,,„''.4,t-, 1 , ..,•tto ...;-,,...7,• ,i t t- i\4 • '3-...44„:itit,i,jr...4 t t Ifie'l' , e PHOTO POINT 34 T4 R3—upstream (11/9/2021) PHOTO POINT 34 T4 R3—downstream(.11/9/2021) 1 r�y;,, ' xs }�bil r r '�. i. rn Aril '�" s 1 @ ram, i. r- 1- a ,r a gel d °- F �_ 1!1 e�� 1 • ;,�s' M S s '� � �q`� E 1 if f. � li i1' t Jf f',� f t �2. °� , a .mac u 1'.�w4L S„? ,d � ' :_ r �.• ; : r PHOTO POINT 35 T5 R1—upstream (11/9/2021) PHOTO POINT 35 T5 R1—downstream(11/9/2021) '3 ;:-, , . si '.'.ate r..,�. i,. - _ i / h 'R'v 21 j4< e� �� / er`Pr. PHOTO POINT 36 T5 R1—upstream (11/9/2021) PHOTO POINT 36 T5 R1—downstream(11/9/2021) Sassarixa Swamp Mitigation Site Appendix A:Visual Assessment Data—Stream Photographs \y7. y�,p',� FF e \/ 4� w ¢er4 L .Yt 'S a f 'e ev �_:. -'j re ` c ' h� k Fw�^�'! =a i 4 .fir sti? \.. "'.:,.,- ti a ��rC - _ 'tip .2 T t 7 . r �_ y PHOTO POINT 37 T5 R2—upstream (11/9/2021) PHOTO POINT 37 T5 R2—downstream(11/9/2021) K iqR Ins .'' ��." �yk ' � i aa�` 9' j d + '.�a, s # fit. `i y e d+i a : s f sr r.'� gyp' ¢ e �� i, ,,4'.114w.,.e r' l�', rya • rb �" qy ` Y1. q3�i a -4 , 4 s 'ITT ' .1 '' w +- r } A PHOTO POINT 38 T5 R2—upstream (11/9/2021) PHOTO POINT 3.8 T5 R2—downstream(11/9/2021) a. gee ` f -z,.at x k k r �' �� -i t _ 3�. k ; ^. it ' ,.I' k v.:,1i.,„ '44,... , -.. ;le- t 1 ‘. ...,, ,. ... ,,,,,„ ' A� T E w a Ii , L . " F fin' a' �f.,Fao` .-L S ..a j ._4 �" 3• C-ak "Sw \ . _ r ^� lam' .a N . ¢`' '' . PHOTO POINT 39 T5 R2—upstream (11/9/2021) PHOTO POINT 39 T5 R2—downstream(11/9/2021) Sassarixa Swamp Mitigation Site Appendix A:Visual Assessment Data—Stream Photographs ,�* IT r e 2:- 1�Yn , s r , r &_a K 'S y !1. ;:it--iy,' .'17' 9w { { �n I.,' r1.3 , A r. .1 : �d� ,. G 74 � � riy' p� 1-i 11 i t - M rs - .. 4 M a - — x : -.-r 1' z p . - t 1G = F -1 # . s PHOTO POINT 40 T5 R2—upstream (11/9/2021) PHOTO POINT 40 T5 R3—downstream(11/9/2021) r T 71 } i 'i E Al )4 AL ; , ' a� ,. ' +' � `-. .. is )f VI 1 . ✓`- y . t i ., , `.-y. .r r..4 ' r PHOTO POINT 41 T5 R3—upstream (11/9/2021) PHOTO POINT 41 T5 R3—downstream(11/9/2021) .-,. • Fi• I y, ' F � i $' ,�a "1 •...90 a , ,. ' 1 - tom i r j ct i--,-",-,.-I,-.. r Aedie F � , "§., < _ �e I. - �a z ter ,:.E , a`z. s a a , r '•fie s' .r— .: 1 ,. y' IL - Fes :f r �' 7k - c PHOTO POINT 42 T5 R3—upstream (11/9/2021) PHOTO POINT 42 T5 R3—downstream(11/9/2021) Sassarixa Swamp Mitigation Site Appendix A:Visual Assessment Data—Stream Photographs P " E 9a- r �k ° i A ,t' d g g�d a 2 ,�.'i �j 4i 4 4 z! : 7 ,� T� " � ?. �+ A. �I - 1� , _ 0,' $ totiems E � -t ,, y � ' -'it" y I1,0 r� & i t"' lr ' if 'I' q , ryl r `.' > ' - �'-_..�; Y �� ° ,� � I V 4 I' ' /-' S1'Y9Y1 "'% f N Y ji F;:' �.y } w .........4,,,, _ ...,, . J.: , - .,..„...,....... .., ,... .. ..,. . . .,...,..„, ....„,. .......,., ..... .... ,„_, . .. ...... _lat. . . 3 F -..+ b,� : s - f k �' �r y ..ah— ! � '` 7s R 1„ _ice . a .. - _ �,.. >e _..° '� y`r F Jam' PHOTO POINT 43 T5 R3—upstream (11/9/2021) PHOTO POINT 43 T5 R3—downstream(11/9/2021) n 6 y '• b vT. 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N. .� f ✓ - 4 tlr I PHOTO POINT 48 T5C—upstream(11/9/2021) PHOTO POINT 48 T5C—downstream(11/9/2021) Sassarixa Swamp Mitigation Site Appendix A:Visual Assessment Data—Stream Photographs ° sue- • " SI"C I s .''z "� r rrL� r 5iZ !h p�, "w - f�� err • , . J. 014 '� > e e � �� ' '! dy '* .'a � :F . „ %...ittikko vo ti e _ i PHOTO POINT 49 T5C—upstream(11/9/2021J PHOTO POINT 49 T5C—downstream(11/9/2021) 9r v r - ,yam "* xa --tel; It .":' - r '�� 3F �` ;fie`. �"' ,j•:.. `¢" ,• .k .,' ss7 k°r .2% :,. 4. f'� '. ,\N ram * �� 3 r.* �"` ::::Iii:: ' '' '*:'''-'44'4: -. ' PHOTO POINT 50 T6 R1—upstream (11/9/2021J PHOTO POINT 50 T6 R1—downstream(11/9/2021) �: s �d yK e'; s ` � is"f - -, ,\— ', "V'il ,sr, ..,,o,,,,„ , ?r,2,-" -.1 r i 1,4' - ft _..1\ _ \ h .-; -'', ,.:,,'' '1, Filt 1 ovr-' .0,,..''. L ,,, .._.z, „"..... ,:,.„....?z,,i..44„..,,t , ; • . ., „, e ,-,,I,`"-14 , a'-,,t, t,;''' ,..,r. ''',g . i'. .' "', - + ;---•% ._ h' ;0'7:4 4 j1 ;--ft',71,-.. .,-,, ,,,', ,v.,,. 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'#� I� .'a` 'i`�� PHOTO POINT 54 T6 R2—upstream (11/9/2021J PHOTO POINT 54 T6 R2—downstream(11/9/2021) Sassarixa Swamp Mitigation Appendix A:Visual AssessmentSite Data—Stream Photographs STREAM CROSSING PHOTOGRAPHS L, ? 3Pi ' ' . ` t' it M-3, ke i',,A;- it*, ot,, ,,,itk — ‘.1 ,•' ,•••=4 - # •-.---- ', T .p-4,41s4 1,,'"'", `1"-7,.`,' • ., i• , • „.t. - of, A, ,K.- • •1/4••=,,14• e •- _.,- ,-,„, r , _ ,...-1---.. 2,, , ,.., ..4.vi f ', ti: .:Yt\ 1,,,.:,1 04' "4, '7''' *,:4,`,...-;". Z 44 :-' '1-,Z1 t r")4,,„FP•t= On_ , „,,,..Ift ,_.. ,,, ,A *..,.= '-vf. 4 Tor t, .4,,,,, 1,,,,',, u -.. I. - ;... 1...- 4 .1.1 iet.',&-.g...1 • .;,,,?. II . 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T4 Reach 3—Looking Upstream (11/9/2021) T4 Reach 3—Looking Downstream (11/9/2021) aVili Sassarixa Swamp Mitigation Site Nal Appendix A:Visual Assessment Data—Stream Crossing Photographs � � TT� 9 'g, s 4 'h Y �3 y� SSjjr � � �I g�� ' ,; _ - <�. s � -+"^,: ,. i, ! t --,-=z f ` ,«-� Mks! r`.�.°y�., t+r i n . , ' - 3 �� d ,�a > y aa' q •Ff - - , ' ... � 'm �$ a ` $5,r 'fix i rr�OW ": � 1,. 3 '�7, • `ter %.�' " _ �c Kam:• I. ae\.,' v �^'. T5 Reach 3—Looking Upstream (11/9/2021J T5 Reach 3—Looking Downstream(11/17/2021J ' — -L ' ' 1 -1' -41::* - �k T s a - a 4 - - F J S } � 4 . � F 'ate XJ --d se,, - c_ T6 Reach 2—Looking Upstream (11/9/2021J T6 Reach 2—Looking Downstream (11/9/2021J litSassarixa Swamp Mitigation Site we Appendix A:Visual Assessment Data—Stream Crossing Photographs VEGETATION PLOT PHOTOGRAPHS �' �;;, ', 401i 0 AMSPW:I'lriMilgum14: • FIXED VEG PLOT 1(9/2/2021) FIXED VEG PLOT 2(9/2/2021) 1111 ill ,f - if F z� 1 0Y"r Y111 t N FIXED VEG PLOT 3(9/2/2021) FIXED VEG PLOT 4(9/2/2021) -,....,,,4„,,ry.-,7,-, --_,..ii-4- '''.=Of i..g,-, 1! yy u+ yg H ..y h FIXED VEG PLOT 5(9/2/2021) FIXED VEG PLOT 6(9/2/2021) Ilk Sassarixa Swamp Mitigation Site Appendix A:Visual Assessment Data—Vegetation Plot Photographs r, ,_,_,-.1',--,,,,r, -:,.. .,,,..1,v_.,..,.....,._: .. ..:. .,::...,...;,,..,, .... ,.,L..s ,:h..:.: :...,.. ..,:-..,,,..., ,. . ..:.....i.*,..! ;,.. 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RANDOM VEG PLOT 11(9/2/2021) tillSassarixa Swamp Mitigation Site Appendix A:Visual Assessment Data—Vegetation Plot Photographs APPENDIX B. VEGETATION PLOT DATA Table 6. Vegetation Plot Data Sassarixa Swamp Mitigation Site DMS Project No.100040 Monitoring Year 1-2021 Planted Acreage 13.03 Date of Initial Plant 2021-03-05 Date of Current Survey 2021-09-06 Plot size(ACRES) 0.0247 Tree/ Indicator Veg Plot 1 F Veg Plot 2 F Veg Plot 3 F Veg Plot 4 F Veg Plot 5 F Scientific Name Common Name Shrub Status Planted Total Planted Total Planted Total Planted Total Planted Total Acer negundo boxelder Tree FAC 1 1 1 1 1 1 1 1 Betula nigra river birch Tree FACW 2 2 4 4 1 1 2 2 Species Liquidambar styraciflua sweetgum Tree FAC Included in Magnolia virginiana sweetbay Tree FACW 1 1 2 2 1 1 1 1 1 1 Approved Platanus occidentalis American sycamore Tree FACW 1 1 4 4 2 2 4 4 Mitigation Populus deltoides eastern cottonwood Tree FAC 3 3 1 1 1 1 Plan Quercus michauxii swamp chestnut oak Tree FACW 2 2 2 2 4 4 1 1 Quercus nigra water oak Tree FAC 2 2 1 1 Quercus phellos willow oak Tree FACW 1 1 3 3 3 3 2 2 • Performance Standard 9 9 6 6 15 15 14 14 12 12 Current Year Stem Count 9 6 15 14 12 Mitigation Stems/Acre 364 243 607 567 486 Plan Species Count 6 3 6 8 7 Performance Dominant Species Composition(%) 22 50 27 29 33 Standard Average Plot Height 2 2 3 2 3 Invasives 0 0 0 0 0 Current Year Stem Count 9 6 15 14 12 Post Stems/Acre 364 243 607 567 486 Mitigation Species Count 6 3 6 8 7 Plan Performance Dominant Species Composition(%) 22 50 27 29 33 Standard Average Plot Height 2 2 3 2 3 Invasives IMMI 0 IIEL 0 0 0 1).Bolded species are proposed for the current monitoring year,italicized species are not approved,and a regular font indicates that the species has been approved. 2).The"Species Included in Approved Mitigation Plan"section contains only those species that were included in the original approved mitigation plan.The"Post Mitigation Plan Species"section includes species that are being proposed through a mitigation plan addendum for the current monitoring year(bolded),species that have been approved in prior monitoring years through a mitigation plan addendum(regular font),and species that are not approved(italicized). 3).The"Mitigation Plan Performance Standard"section is derived only from stems included in the original mitigation plan,whereas the"Post Mitigation Plan Performance Standard"includes data from mitigation plan approved,post mitigation plan approved,and proposed stems. Table 6. Vegetation Plot Data Sassarixa Swamp Mitigation Site DMS Project No.100040 Monitoring Year 1-2021 Planted Acreage 13.03 Date of Initial Plant 2021-03-05 Date of Current Survey 2021-09-06 Plot size(ACRES) 0.0247 Tree/ Indicator Veg Plot 6 F Veg Plot 7 F Veg Plot 8 F Veg Plot 9 F Veg Plot 10 F Veg Plot 11 Scientific Name Common Name R Shrub Status Planted Total Planted Total Planted Total Planted Total Planted Total Total Acer negundo boxelder Tree FAC 2 2 1 1 2 2 2 2 1 Betula nigra river birch Tree FACW 2 2 2 2 1 1 3 3 1 1 4 Species Liquidambar styraciflua sweetgum Tree FAC 1 Included in Magnolia virginiana sweetbay Tree FACW 1 1 1 1 1 1 1 1 2 2 1 Approved Platanus occidentalis American sycamore Tree FACW 2 2 3 3 3 3 5 5 3 3 1 Mitigation Populus deltoides eastern cottonwood Tree FAC 1 1 1 1 2 2 2 2 1 Plan Quercus michauxii swamp chestnut oak Tree FACW 3 3 3 3 4 4 1 1 2 2 1 Quercus nigra water oak Tree FAC 1 1 1 1 Quercus phellos willow oak Tree FACW 3 3 2 2 2 2 1 1 2 2 2 • Performance Standard 13 13 14 14 14 14 15 15 13 13 12 Current Year Stem Count 13 14 14 15 13 12 Mitigation Stems/Acre 526 567 567 607 526 486 Plan Species Count 6 8 7 7 7 8 Performance Dominant Species Composition(%) 23 21 29 33 23 33 Standard Average Plot Height 2 3 3 3 2 3 Invasives 0 0 0 0 0 0 Current Year Stem Count 13 14 14 15 13 12 Post Stems/Acre 526 567 567 607 526 486 Mitigation Species Count 6 8 7 7 7 8 Plan Performance Dominant Species Composition(%) 23 21 29 33 23 33 Standard Average Plot Height 2 3 3 3 2 3 Invasives IMMI 0 IIEL 0 0 0 0 1).Bolded species are proposed for the current monitoring year,italicized species are not approved,and a regular font indicates that the species has been approved. 2).The"Species Included in Approved Mitigation Plan"section contains only those species that were included in the original approved mitigation plan.The"Post Mitigation Plan Species"section includes species that are being proposed through a mitigation plan addendum for the current monitoring year(bolded),species that have been approved in prior monitoring years through a mitigation plan addendum(regular font),and species that are not approved(italicized). 3).The"Mitigation Plan Performance Standard"section is derived only from stems included in the original mitigation plan,whereas the"Post Mitigation Plan Performance Standard"includes data from mitigation plan approved,post mitigation plan approved,and proposed stems. Table 7. Vegetation Performance Standards Summary Table Sassarixa Swamp Mitigation Site DMS Project No.100040 Monitoring Year 1-2021 Veg Plot 1 F Veg Plot 2 F Veg Plot 3 F Stems/Ac. Av.Ht.(ft) #Species %Invasives Stems/Ac. Av.Ht.(ft) #Species %Invasives Stems/Ac. Av.Ht.(ft) #Species %Invasives Monitoring Year 7 Monitoring Year 5 Monitoring Year 3 Monitoring Year 2 Monitoring Year 1 pil 364 2 6 0 243 2 3 0 607 3 6 0 Monitoring Year 0 567 3 8 0 445 2 5 0 607 2 6 0 Veg Plot 4 F Veg Plot 5 F Veg Plot 6 F Stems/Ac. Av.Ht.(ft) #Species %Invasives Stems/Ac. Av.Ht.(ft) #Species %Invasives Stems/Ac. Av.Ht.(ft) #Species %Invasives Monitoring Year 7 Monitoring Year 5 Monitoring Year 3 Monitoring Year 2 Monitoring Year 1 567 2 8 0 486 3 7 0 526 2 6 0 Monitoring Year 0 607 2 - 8 0 486 3 7 0 567 3 6 Veg Plot 7 F Veg Plot 8 F Veg Plot 9 F Stems/Ac. Av.Ht.(ft) #Species %Invasives Stems/Ac. Av.Ht.(ft) #Species %Invasives Stems/Ac. Av.Ht.(ft) #Species %Invasives Monitoring Year 7 Monitoring Year 5 Monitoring Year 3 Monitoring Year 2 Monitoring Year 1 567 3 8 0 567 3 7 0 607 3 7 0 Monitoring Year 0 567 2 8 0 567 3 7 0 648 2 7 0 Veg Plot 10 F Veg Plot Group 1 R Stems/Ac. Av.Ht.(ft) #Species %Invasives Stems/Ac. Av.Ht.(ft) #Species %Invasives Monitoring Year 7 Monitoring Year 5 Monitoring Year 3 Monitoring Year 2 Monitoring Year 1 526 2 7 0 3 8 0 Monitoring Year 0 Ilk 8 lai 0 2 8 0 *Each monitoring year represents a different plot for the random vegetation plot"groups".Random plots are denoted with an R,and fixed plots with an F. APPENDIX C. STREAM GEOMORPHOLOGY DATA Cross-Section Plots Cross-Section 1 (Riffle) T1 Reach 2 151- 150- i C Q t49 ipt--- Nr. . -4 - tir ru L11 14l 1-1i 14 <L1 36 Distance(ft.) -- MY 0 + kw I -- Bankfull Elevation-Based on As-Built Banklull Area — Current Low Top of Bank MVO MY1 MY2 MY3 MY5 MY7 Bankfull Elevation - Based on AB-Bankfull Area 149.35 149.41 Bank Height Ratio - Based on AB-Bankfull Area 1.00 0.93 Thalweg Elevation 148.45 148.62 LTOB Elevation 149.35 149.36 LTOB Max Depth 0.90 0.74 LTOB Cross-Sectional Area 2.47 2.16 • /!�p�1 rT t''' � v > � i Vki + 4. m� 7_ w - � ( • 1 441 . 1 a I i v -t I. 4 nr r r s xr, t 3 P' y a .-,0,.:0,;',... - 's. '�t ,� � ?� �fie`'" :.- 4 "p-e � 'k ' * � f. p' 4 + ktvr , y R " fir x. : pi y [doh. _ �� s /b?', .--.1-^ �`\�- -�' r_ � .-`h-. • '..1 Downstream(07/27/2021) Sassarixa Swamp Mitigation Site Appendix C:Stream Geomorphology Data—Cross-Section Plots Cross-Section 2 (Pool) T1 Reach 2 150- 149- J � c g 148- ri a us LLI 14i- LAG- 1 t1 <L1 3L1 Distance(ft.) MY 0 + k iY 1 -- Bankfull Elevation-Based on As-Built Banklull Area — Current Low Top of Bank MY0 MY1 MY2 MY3 MY5 MY7 Bankfull Elevation - Based N/A N/A on AB-Bankfull Area Bank Height Ratio - Based N/A N/A on AB-Bankfull Area Thalweg Elevation 147.78 147.58 LTOB Elevation 148.82 148.77 LTOB Max Depth 1.04 1.19 LTOB Cross-Sectional Area 3.20 2.84 ">-717 � a i � ` r Lv + 'a1:1tii Sr,- Y p 31 Y`V.JyA1 `{" ief6�"'e6Vl ilit � 'i gam- � IDS'TI _ -� Y,5- R ,„-,-;it-,........-E 1 \ - ::.,..,,:s., -„.iir?.._ _ ... . . _ -_ _ -,...: 7'' i •-' '4, Oak, ','' 7"-'-''• Rf y r Y- Tk ' am . �. . '' V'. :'ti i":YL rh l Downstream(07/27/2021) Sassarixa Swamp Mitigation Site 14, Appendix C:Stream Geomorphology Data—Cross-Section Plots Cross-Section 3 (Riffle) T1 Reach 3 1-a- 11: :: li 03 Ca 1r_9- 1 2J- Distance(ft.) MY 0 -*- MY 1 -- Bankfull Elevation-Based on As-Built Bankfull Area — Current Low Top of Bank MVO MY1 MY2 MY3 MY5 MY7 Bankfull Elevation - Based on AB-Bankfull Area 130.69 130.77 Bank Height Ratio - Based on AB-Bankfull Area 1.00 0.91 Thalweg Elevation 130.04 130.24 LTOB Elevation 130.69 130.72 LTOB Max Depth 0.64 0.48 LTOB Cross-Sectional Area 1.67 1.45 -- 1'' . - - ''''-e.'", '1*- '::. '. 'e'' '', . ,,,_: ._ ,, _,,A.--. .,._. . ,k ,% 11-,,,A . ,, . "NirA _, : __ _ ,„_ _ ,,,,,_ .,„: it ' , -Yr ., _ R": �, a .a ; ..`E S' , • .4104 , ., , Qt-Na,t ,:, . , :,.7,7,...10.,, ,..,: Downstream(07/27/2021) Sassarixa Swamp Mitigation Site Appendix C:Stream Geomorphology Data—Cross-Section Plots Cross-Section 4 (Riffle) T2 1.13- 142 10 • o .---4—ilFt--"Im't\k's*fiP-a-- ri---i"- — 141 G7 L11 1.4'1- 1 l 211 30, Distance(ft.) ,- MY 0 -•- my 1 -- Bankfull Elevation-Based on As-Built Bankfull Area — Current Low Top of Bank MVO MY1 MY2 MY3 MY5 MY7 Bankfull Elevation - Based on AB-Bankfull Area 141.46 141.52 Bank Height Ratio - Based on AB-Bankfull Area 1.00 0.94 Thalweg Elevation 140.66 140.78 LTOB Elevation 141.46 141.47 LTOB Max Depth 0.80 0.69 LTOB Cross-Sectional Area 1.99 1.76 1 y,4{s..' j 4 - s: A, -' : 3 -way- `I n F, - _ 4 4: -V Wes a. #xa -'ll' `:,e - f _ "f ,4 ,, "'f ' ' ? f „.. ;'a ''-"'''"4.''''' k4.1 11 `� i, t,A., ii. ,qF �, 1 1 1 1 ` a 1,1 A , tift.-4..; .*:,* , . -, k ,t , _Ai •, Or/ ..." .,. ' 1 V..:.," '4" . '`'11--44N17.1P-;A-7' Downstream(07/27/2021) Sassarixa Swamp Mitigation Site Appendix C:Stream Geomorphology Data-Cross-Section Plots Cross-Section 5 (Pool) T2 142- • — —_ 141- ti 2 vao to 7 411 -F U 1;i':1- 1 t< 2C1 3D Distance(ft.) My n -.- MV I -- Bankfull Elevation-Based on As-Built Banklull Area — Current Low Top of Bank MVO MY1 MY2 MY3 MY5 MY7 Bankfull Elevation - Based N/A N/A on AB-Bankfull Area Bank Height Ratio - Based N/A N/A on AB-Bankfull Area Thalweg Elevation 139.53 139.50 LTOB Elevation 141.12 141.10 LTOB Max Depth 1.58 1.60 LTOB Cross-Sectional Area 4.88 4.82 ,-.0. —' , '4't, *°,,i,'4'_..--.7 1% ,...7i7 °• t a r Sir s ... a 4 r f'4' .. '$ ,fey '*, �'' r1 I, �F/ T' Y i i .aE ;`art-- - t��Pt lI 1 p`i, ,f , "v z�' P1 ��p Y LL Ce ii 1114. r a ' t r ref + " tj � qr, l :�, gippik ' tf Syr. ti� . Irak Downstream(07/27/2021) Sassarixa Swamp Mitigation Site Appendix C:Stream Geomorphology Data—Cross-Section Plots Cross-Section 6 (Pool) T3 130- 129- i 1128 I 12i- 12G- ,i Fp 211 io Distance(ft.) •- MY 0 . kw I -- Bankfull Elevation-Based on As-Built Banklull Area — Current Low Top of Bank MVO MY1 MY2 MY3 MY5 MY7 Bankfull Elevation - Based N/A N/A on AB-Bankfull Area Bank Height Ratio - Based N/A N/A on AB-Bankfull Area Thalweg Elevation 126.70 127.32 LTOB Elevation 128.16 128.35 LTOB Max Depth 1.46 1.03 LTOB Cross-Sectional Area 3.25 2.57 t _47/k10.. F i y -0. _ w „ - /tor • :f' ♦ ` r ''` i- .i 4 7 W fir.. _F-. ,'"— j >,* �1 - MV' .� is t fi ` � f • • • V ! ram Downstream(07/27/2021) Sassarixa Swamp Mitigation Site Appendix C:Stream Geomorphology Data-Cross-Section Plots Cross-Section 7 (Riffle)T3 13a- 129- • • 128- Tst L1l .1/- k° 127- 126- II sn L 3U Distance(ft,) MY 0 • MV a -- Bankfull Elevation-Bed on As-Built Bankfull Area Current Low Top of Bank MYO MY1 MY2 MY3 MY5 MY7 Bankfull Elevation - Based on AB Bankfull Area 127.58 127.56 Bank Height Ratio - Based on AB-Bankfull Area 1.00 1.10 Thalweg Elevation 127.06 126.89 LTOB Elevation 127.58 127.63 LTOB Max Depth 0.52 0.74 1.82 LTOB Cross Sectional Area 1.50 +e a y' ., A # a ✓ i :' f lit S° s y y1 ,ice° i, ..,t . , � p+s > �' _ a. Downstream(07/27/2021) 1.41 Sassarixa Swamp Mitigation Site Appendix C:Stream Geomorphology Data—Cross-Section Plots Cross-Section 8 (Riffle) T5 Reach 2 135- 134- c 12 133- --- —_: o a cis LLI 1ii 2C1 Ai Distance(ft.) No n -•- MY -- Bankfull Elevation-Based on As-Built Banklull Area Current Low Top of Bank MVO MY1 MY2 MY3 MY5 MY7 Bankfull Elevation - Based on AB-Bankfull Area 133.06 133.12 Bank Height Ratio - Based on AB-Bankfull Area 1.00 0.85 Thalweg Elevation 132.36 132.42 LTOB Elevation 133.06 133.02 LTOB Max Depth 0.70 0.60 LTOB Cross-Sectional Area 2.49 1.95 1� • R f . b�.x t1 ' , I • v� ✓ k x .. - ri ' T� �r F p N �p1s y i O c 'tr ... .- fir ,rt_�, 4 7`�� _ . �9�11y, Downstream(07/27/2021) Sassarixa Swamp Mitigation Site Appendix C:Stream Geomorphology Data—Cross-Section Plots Cross-Section 9 (Pool) T5 Reach 2 1-31 }�- --. r t — 1*4,4 o ,' tO LL1 1il A. 3C 6U Distance(ft.) MY 6 • MY I -- Bankfull Elevation Based on As-Suil%Banklull Area — Current Low lop of Bank my() MY1 MY2 MY3 MY5 MY7 Bankfull Elevation - Based N/A N/A on AB-Bankfull Area Bank Height Ratio Based N/A N/A on AB 131.03 Bankfull Area Thalweg Elevation 132.53 131.50 LTOB Elevation 132.46 LTOB Max Depth 1.50 0.96 LTOB Cross Sectional Area 6.97 3.86 �� i ` 1 .y 3§ .. +T f .♦ AL a -- J '.,�y� W • �� i€, ; \' Downstream Swamp (07/27/2021) Sassarixa Mitigation Site Appendix C:Stream Geomorphology Data—Cross-Section Plots Cross-Section 10 (Riffle) T6 1° - ti vim---• Q 156- m LU 11 1 t< 211 30, Distance(ft.) My 0 -•- TAy I -- Bankfull Elevation-Based on As-Built Banklull Area — Current Low Top of Bank MVO MY1 MY2 MY3 MY5 MY7 Bankfull Elevation - Based on AB-Bankfull Area 156.43 156.50 Bank Height Ratio - Based on AB-Bankfull Area 1.00 0.88 Thalweg Elevation 155.62 155.69 LTOB Elevation 156.43 156.40 LTOB Max Depth 0.81 0.71 LTOB Cross-Sectional Area 2.69 2.20 �( o l 4 ,, �f/i?� ,L,�.I h.- .! - ` - r 4 gig,• �'f�r1- ' .• ,S^ — 7 1 .F' a/ r ' - Downstream(07/27/2021) Sassarixa Swamp Mitigation Site Appendix C:Stream Geomorphology Data-Cross-Section Plots Table 8. Baseline Stream Data Summary Sassarixa Swamp Mitigation Site DMS Project No. 100040 Monitoring Year 1-2021 PRE-EXISTING MONITORING BASELINE CONDITIONS DESIGN (MYO) Parameter T1 R2 Riffle Only Min Max n Min Max Min Max n Bankfull Width(ft) 3.4 1 3.6 5.2 1 Floodprone Width(ft) 8 1 >7.9 200 1 Bankfull Mean Depth 1 1 0.3 0.4 1 Bankfull Max Depth 0.7 1 0.4 0.5 0.9 1 Bankfull Cross Sectional Area(ft2) 2.5 1 1.2 2.5 1 Width/Depth Ratio 4.9 1 11.0 11.0 1 Entrenchment Ratio 2.2 1 >2.2 34.6 1 Bank Height Ratio 3.0 1 1.0 1.2 1.0 1 Max part size(mm)mobilized at bankfull --- --- --- Rosgen Classification G5 C5b/E5b C5b/E5b Bankfull Discharge(cfs) 8.8 3.0 9.0 Sinuosity 1.20 1.20 1.20 Water Surface Slope(ft/ft)2 0.0190 0.0300 2 0.0250 0.0410 0.0322 Other --- -- Parameter T1 R3 Riffle Only Min Max n Min Max Min Max n Bankfull Width(ft) 3.4 1 4.2 4.3 1 Floodprone Width(ft) 8 1 >9.2 90 1 Bankfull Mean Depth 1 1 0.4 0.4 1 Bankfull Max Depth 0.7 1 0.4 0.6 0.6 1 Bankfull Cross Sectional Area(ft2) 2.5 1 1.5 1.7 1 Width/Depth Ratio 4.9 1 12.0 11.1 1 Entrenchment Ratio 2.2 1 >2.2 21.9 1 Bank Height Ratio 3.0 1 1.0 1.2 1.0 1 Max part size(mm)mobilized at bankfull --- --- --- Rosgen Classification G5 C5/E5 C5/E5 Bankfull Discharge(cfs) 8.8 3.5 4.3 Sinuosity 1.20 1.20 1.20 Water Surface Slope(ft/ft)2 0.0190 0.0300 2 0.0092 0.0250 0.0181 Other --- -- Table 8. Baseline Stream Data Summary Sassarixa Swamp Mitigation Site DMS Project No. 100040 Monitoring Year 1-2021 PRE-EXISTING MONITORING BASELINE CONDITIONS DESIGN (MYO) Parameter T2 Riffle Only Min Max n Min Max Min Max n Bankfull Width(ft) 3 1 4.2 5.6 1 Floodprone Width(ft) 4 1 >9.2 75 1 Bankfull Mean Depth 0.5 1 0.4 0.4 1 Bankfull Max Depth 0.6 1 0.5 0.8 1 Bankfull Cross Sectional Area(ft2) 1.5 1 1.5 2.0 1 Width/Depth Ratio 6 1 12.0 15.7 1 Entrenchment Ratio 1.2 1 >2.2 13.4 1 Bank Height Ratio 6.5 1 1.0 1.2 1.0 1 Max part size(mm)mobilized at bankfull --- --- --- Rosgen Classification G5 C5b/E5b C5b/E5b Bankfull Discharge(cfs) 5.4 2.0 4.3 Sinuosity 1.14 1.40 1.40 Water Surface Slope(ft/ft)2 0.0290 1 0.0051 0.0064 0.0147 Other --- -- Parameter T3 R1 Riffle Only Min Max n Min Max Min Max n Bankfull Width(ft) 3.2 4.2 2 3.6 4.7 1 Floodprone Width (ft) 5 24 2 >7.9 35 1 Bankfull Mean Depth 0.42 0.5 2 0.3 0.3 1 Bankfull Max Depth 0.7 0.56 2 0.4 0.5 0.5 1 Bankfull Cross Sectional Area(ft2) 1.7 2 1.0 1.5 1 Width/Depth Ratio 6.4 10 2 12.0 14.8 1 Entrenchment Ratio 1.1 7.1 2 >2.2 7.4 1 Bank Height Ratio 2.7 7.0 2 1.0 1.2 1.0 1 Max part size(mm)mobilized at bankfull --- --- --- Rosgen Classification B5/G5 C5/E5b C5/E5b Bankfull Discharge(cfs) 6.2 6.9 2 2.5 4.5 Sinuosity 1.16 1.20 1.20 Water Surface Slope(ft/ft)2 0.0340 1 0.0280 0.0330 0.0312 Other --- -- Table 8. Baseline Stream Data Summary Sassarixa Swamp Mitigation Site DMS Project No. 100040 Monitoring Year 1-2021 PRE-EXISTING MONITORING BASELINE CONDITIONS DESIGN (MYO) Parameter T5 R2 Riffle Only Min Max n Min Max Min Max n Bankfull Width(ft) 3.1 1 5.6 5.9 1 Floodprone Width(ft) 27 1 >11 170 1 Bankfull Mean Depth 1.1 1 0.5 0.4 1 Bankfull Max Depth 1.4 1 0.6 0.8 0.7 1 Bankfull Cross Sectional Area(ft2) 3.5 1 2.7 2.5 1 Width/Depth Ratio 2.8 1 12.0 14.0 1 Entrenchment Ratio 8.7 1 >2.2 16.9 1 Bank Height Ratio 1.6 1 1.0 1.2 1.0 1 Max part size(mm)mobilized at bankfull --- --- --- Rosgen Classification E5 C5/E5 C5/E5 Bankfull Discharge(cfs) 10.9 6.0 5.4 Sinuosity 1.20 1.40 1.40 Water Surface Slope(ft/ft)2 0.0120 1 0.0086 0.0170 0.0111 Other --- -- Parameter T6 R1 Riffle Only Min Max n Min Max Min Max n Bankfull Width(ft) 4.1 1 6.4 6.0 1 Floodprone Width (ft) 7 1 >14 90 1 Bankfull Mean Depth 1.1 1 0.41 0.4 1 Bankfull Max Depth 1.5 1 0.5 0.7 0.8 1 Bankfull Cross Sectional Area(ft2) 4.4 1 3.3 2.7 1 Width/Depth Ratio 3.7 1 12.0 13.3 1 Entrenchment Ratio 1.7 1 >2.2 15.1 1 Bank Height Ratio 2.0 1 1.0 1.2 1.0 1 Max part size(mm)mobilized at bankfull --- --- --- Rosgen Classification G5 C5/E5 C5/E5 Bankfull Discharge(cfs) 12.8 5.5 5.9 Sinuosity 1.10 1.20 1.20 Water Surface Slope(ft/ft)2 0.0086 1 0.0049 0.0150 0.0107 Other --- -- Table 9. Cross-Section Morphology Monitoring Summary Sassarixa Swamp Mitigation Site DMS Project No.100040 Monitoring Year 1-2021 Cross-Section 1(Riffle) Cross-Section 2(Pool) Cross-Section 3(Riffle) Cross-Section 4(Riffle) MYO MY1 MY2 MY3 MY5 MY7 MYO MY1 MY2 MY3 MY5 MY7 MYO MY1 MY2 MY3 MY5 MY7 MYO MY1 MY2 MY3 MY5 MY7 Bankfull Elevation(ft)-Based on AB-Bankfull'Area 149.35 149.41 N/A N/A 130.69 130.77 141.46 141.52 Bank Height Ratio-Based on AB Bankfulll Area 1.00 0.93 N/A N/A 1.00 0.91 1.00 0.94 Thalweg Elevation 148.45 148.62 147.78 147.58 130.04 130.24 140.66 140.79 LTOB2 Elevation 149.35 149.36 148.82 148.77 130.69 130.72 141.46 141.48 LTOB2 Max Depth(ft) 0.90 0.74 1.04 1.19 0.64 0.48 0.80 0.69 LTOB2 Cross Sectional Area(ft2) 2.47 2.16 3.20 2.84 1.67 1.45 1.99 1.76 Cross-Section 5(Pool) Cross-Section 6(Pool) Cross-Section 7(Riffle) Cross-Section 8(Riffle) MYO MY1 MY2 MY3 MY5 MY7 MYO MY1 MY2 MY3 MY5 MY7 MYO MY1 MY2 MY3 MY5 MY7 MYO MY1 MY2 MY3 MY5 MY7 Bankfull Elevation(ft)-Based on AB-Bankfulll Area N/A N/A N/A N/A 127.58 127.56 133.06 133.12 Bank Height Ratio-Based on AB Bankfulll Area N/A N/A N/A N/A 1.00 1.10 1.00 0.85 Thalweg Elevation 139.53 139.51 126.70 127.32 127.06 126.89 132.36 132.42 LTOB2 Elevation 141.12 141.11 128.16 128.35 127.58 127.63 133.06 133.02 LTOB2 Max Depth(ft) 1.58 1.60 1.46 1.03 0.52 0.74 0.70 0.60 LTOB2 Cross Sectional Area(ft2) 4.88 4.82 3.25 2.57 1.50 1.82 2.49 1.95 Cross-Section 9(Pool) Cross-Section 10(Riffle) MYO MY1 MY2 MY3 MY5 MY7 MYO MY1 MY2 MY3 MY5 MY7 Bankfull Elevation(ft)-Based on AB-Bankfulll Area N/A N/A 156.43 156.50 Bank Height Ratio-Based on AB Bankfulll Area N/A N/A 1.00 0.88 Thalweg Elevation 131.03 131.50 155.62 155.69 LTOB2 Elevation 132.53 132.46 156.43 156.40 LTOB2 Max Depth(ft) 1.50 0.96 0.81 0.71 LTOB2 Cross Sectional Area(ft2) 6.97 3.86 2.69 2.20 'Bank Height Ratio(BHR)takes the As-built bankful area as the basis for adjusting each subsequent years bankfull elevation. 2LTOB Area and Max depth-These are based on the LTOB elevation for each years survey(The same elevation used for the LTOB in the BHR calculation).Area below the LTOB elevation will be used and tracked for each year as above.The difference between the LTOB elevation and the thalweg elevation(same as in the BHR calculation)will be recroded and tracked above as LTOB max depth. APPENDIX D. HYDROLOGY DATA Table 10. Bankfull Events Sassarixa Swamp Mitigation Site DMS Project No. 100040 Monitoring Year 1-2021 Reach MY1(2021) MY2(2022) MY3(2023) MY4(2024) MY5(2025) MY6(2026) MY7(2027) T1 Reach 3 2/16/2021 7/28/2021 T2 7/27/2021 10/9/2021 T3 Reach 1 7/28/2021 T5 Reach 2 1/24/2021 7/28/2021 Table 11. Rainfall Summary Sassarixa Swamp Mitigation Site DMS Project No. 100040 Monitoring Year 1-2021 MY1(2021) MY2(2022) MY3(2023) MY4(2024) MY5(2025) MY6(2026) MY7(2027) Annual Precip * Total 31.38 WETS 30th 44.35 Percentile WETS 70th 52.31 Percentile Normal *Annual precipitation total was collected up until 11/9/2021.Data will be updated in MY2. Table 12. Wetland Gauge Summary Sassarixa Swamp Mitigation Site DMS Project No. 100040 Monitoring Year 1-2021 Max.Consecutive Hydroperiod(Percentage) Gauge MY1(2021)* MY2(2022) MY3(2023) MY4(2024) MY5(2025) MY6(2026) MY7(2027) 1 124 Days (47.5%) Performance Standard: None WETS Station:Smithfield 2 North Growing Season:3/1/2021 to 11/16/2021(260 Days) *Data was collected from 3/1/2021 to 11/9/2021 (253 Days). Wetland Gauge Plot Sassarixa Swamp Mitigation Site DMS Project No. 100040 Monitoring Year 1-2021 Sassarixa Swamp Groundwater Gauge a, a, In Monitoring Year 1-2021 a N-1 -o C o 15 - o �- 3 10 o 124 max consecutive days 2 m o -1_ 10 5 - o %--1- - 9 L w 5 8 0 - 7 M — o 0 0 0 �� o —� -- 6 L \\___ I 5 -"\476\7117k r ( o > 10 4 i, ` o J 5 as T — 17 — 15cti G 15 / I 4 ;v - L I 3,_kri- 20 I I 25 I / 2 30 \-\ rl II 1 3 5 I li �I ■ I .1 , J . I . I L I. I Y I , I II_ II L I I I i. 1 0 0 _0 i T 0 — to 0_ > V V L.L Q 5 Q N [) z 0 Daily Precipitation Gauge Depth — -Criteria Level o Soil Surface 30-Day Rolling Precip Total 30th&70th Percentile Table 13. Recorded In-Stream Flow Events Summary Sassarixa Swamp Mitigation Site DMS Project No. 100040 Monitoring Year 1-2021 Max Consecutive Days/Total Days Meeting Success Criteria* Reach MY1(2021)** MY2(2022) MY3(2023) MY4(2024) MY5(2025) MY6(2026) MY7(2027) T1 Reach 2 44 Days/ 108 Days T2 103 Days/ 177 Days T3 Reach 1 108 Days/ 190 Days *Success criteria is 30 consecutive days of flow. **Data was colleted through 11/9/2021.Data will be updated in MY2. Recorded In-Stream Flow Events Plot Sassarixa Swamp Mitigation Site DMS Project No.100040 Monitoring Year 1-2021 Sassarixa Swamp:T1 Reach 2 Monitoring Year 1-2021 163 - - 7 ` \44 days of consecutive strea low - 6 162 i 16.k,•�,.+IY ._ ,____L c 1 -- 1 1. .. . . ... . . . . . . ..— - 5 a W �I 3 12 _ I Wuul + a 161 . 1 � 1 -- / 2 _ - 1 L 160 1 - 1 L■ I ■I J ■ I ■ . l I l . I■ I. I ilid ' I I II . L II1. I 0 Ul ` fl- J al Y O u 5 a 5 ¢ in o Z 0 Daily Precipitation —Water Level — — Thalweg — • •Bankfull 30-Day Rolling Precip Total 30th&70th Percentile Recorded In-Stream Flow Events Plot Sassarixa Swamp Mitigation Site DMS Project No.100040 Monitoring Year 1-2021 Sassarixa Swamp:T2 Monitoring Year 1-2021 141 7 I ` \ :03 days of consecutive stream f • _ 6 . �. —. - 5 140 I I r _,_, , ... c 0 !y_�.r�yT�� o L 0. a W 139 F ., L I rl \-- L ` L IZJ IIIL _ 1 138 - 1ILIII ■i J ■ i . l i l . �i■ i I ■ d + ' I L I it . L i i 1. i 0 C Ul ` 'a J a, Y O al 5 a 5 ¢ in O Z 0 Daily Precipitation —Water Level — — Thalweg — • •Bankfull 30-Day Rolling Precip Total 30th&70th Percentile Recorded In-Stream Flow Events Plot Sassarixa Swamp Mitigation Site DMS Project No.100040 Monitoring Year 1-2021 Sassarixa Swamp:T3 Reach 1 Monitoring Year 1-2021 153 7 I ` \ :08 days of consecutive stream f • - 6 x I AA LA - 4 .� G G •Y a - 3 .a a` 151r\ilii°14.14 I eM6wWNr WALWAaa I - 2 \:— I LJ III - 11 1L11111 J ■ 1 J . l 1 l . 1■ i I L J 1 ' I L I L II . 1 11s I 0 C Ul ` 'a J W Y O al 5 ¢ 5 ¢ in O Z 0 Daily Precipitation —Water Level — — Thalweg _ • •Bankfull 30-Day Rolling Precip Total 30th&70th Percentile APPENDIX E. PROJECT TIMELINE AND CONTACT INFO Table 14. Project Activity and Reporting History Sassarixa Swamp Mitigation Site DMS Project No.100040 Monitoring Year 1-2021 11111. Activity or Deliverable Data Collection Complete Task Completion or Deliverable Submission Project Instituted NA January 2018 Mitigation Plan Approved November 2019 November 2019 Construction(Grading)Completed NA January 2021 Planting Completed NA March 2021 As-Built Survey Completed Febuary 2021 Febuary 2021 Stream Survey January 2021 Baseline Monitoring Document(Year 0) April 2021 Vegetation Survey March 2021 Easement Encroachment July 2021 In-Stream Vegetation Treatment September 2021 Stream Survey July 2021 Year 1 Monitoring December 2021 Vegetation Survey September 2021 Stream Survey 2022 Year 2 Monitoring December 2022 Vegetation Survey 2022 Stream Survey 2023 Year 3 Monitoring December 2023 Vegetation Survey 2023 Year 4 Monitoring December 2024 Stream Survey 2025 Year 5 Monitoring December 2025 Vegetation Survey 2025 Year 6 Monitoring December 2026 Stream Survey 2027 Year 7 Monitoring December 2027 Vegetation Survey 2027 Table 15. Project Contact Table Sassarixa Swamp Mitigation Site DMS Project No.100040 Monitoring Year 1-2021 Wildlands Engineering,Inc. Designer 312 West Millbrook Road,Suite 225 Angela Allen,PE Raleigh,NC 27609 919.851.9986 Land Mechanic Designs,Inc. Construction Contractor 126 Circle G Lane Willow Spring,NC 27592 Monitoring Performers Wildlands Engineering,Inc. Jason Lorch Monitoring,POC 919.851.9986 APPENDIX F. Additional Documentation WILDLANDS ENGINEERING November 30, 2021 Kim Browning Wilmington District, Regulatory Division U.S. Army Corps of Engineers 11405 Falls of Neuse Road Wake Forest, NC 27587 Subject: IRT Comments on Sassarixa Swamp Mitigation Site Baseline Report and Record Drawings Sassarixa Swamp, SAQ 2018-00432, DMS Project Number 100040 Dear Ms. Browning, We have reviewed the comments on the MYO Report for the above referenced project dated August 27, 2021. Below are responses to each of your comments. For your convenience, the comments are reprinted with our response in italics. USACE Comments, Kim Browning: 1. Table 1:T1 R4,T1A,T1B and T1C are listed as Ell at 2.5:1 and part of the rationale for this ratio was livestock exclusion and understory planting. Were these areas planted? If so, with what species?The IRT agreed to a 4:1 ratio during the draft mitigation plan review but ultimately accepted 2.5:1 based on increasing understory diversity and livestock exclusion. The mitigation plan stated that T1A, T1B, and T1C would require, anting and the exclusion of livestock to improve stream function (pg 24). However, it does not mention understory planting. We could not find mention of understory planting in any comment responses or meeting minutes. 2. The final mitigation plan planting list included 10%cherry bark oak in the floodplain and wetland planting zone.This is not listed in the MYO report;which species were increased as a substitution? Cherrybark oak was only planted in the wetland areas. Of the 660 trees planted in the wetland areas, 66 were cherrybark oak so the likelihood that we would see a species in the veg plots is low. 3. In future monitoring reports it would be helpful to include planted stem percentages in Table 6. Table 6 is an exported excel document from a DMS template. Wildlands can discuss the possibility of including planted stem percentages in future reports. 4. Please include photo points of all crossings in future monitoring reports. Photo of stream crossings are now in Appendix A. WWildlands Engineering,Inc. (P)919.851.9986 • 312 West Millbrook Road,Suite 225 • Raleigh,NC 27609 WILDLANDS ENGINEERING 5. Sediment is observed in the channel in several sections of T2 in the photos and on the video. Do you anticipate that this will be flushed out of the system and form more defined channel features?The area where the pond was removed appears to be trending towards developing wetland features. Yes, sediment has already started to make its way through the system.A more defined channel can be seen on the site. 6. Please verify that a flow gauge was installed on T3. I was able to spot the gauge on T2 in the photos but photo point 24 didn't capture the gauge. Yes, a flow gauge was installed on T3. It is shown in Figure la and data is in Appendix D. 7. Is the large amount of rock observed in the video at the upper end of T2 the BMP shown on Sheet 1.25? I noted that the PCN included impacts for grading wetland GG, but the design sheets show the BMP in the wetland, which would be considered a permanent impact. Treatment features should not be placed in jurisdictional features. The PCN called out wetland GG as a permanent impact for grading. Wetland GG was originally a manmade wetland similar to a small retention basin that had a pipe connecting it to the pond. The original plan was to grade this into the proposed valley. However, high runoff volumes from the cattle pastures during construction began to cause erosion on the valley walls. Adding the BMP as a field adjustment was necessary to prevent future erosion by slowing the runoff from the adjacent fields. 8. In future monitoring reports please provide an estimate of how many of the mature trees that were still present after construction have died. I'm curious about the effects of construction equipment and tree survival. A visual assessment of mature tree mortality will be documented during every monitoring report. 9. A lot of mature pine was noted in the video that will serve as a seed source in the buffer. Please explain how this will be addressed if pine volunteers dominate the site. Selective pine removal will be considered if pine volunteers dominate the site. 10. Was there only one random veg plot? I'd like to request one be located along T5 near cross section 8. Yes, one random veg plot was approved in the Mitigation Plan. T5 is mostly mature forest with only a narrow corridor impacted during construction; therefore, only a small area was planted.A random veg plot would be very difficult to place in this small area. The random veg plot will be moved throughout the Site and can assess T5 if requested by the IRT. Attached is as-built plan sheet 3.3 showing the narrow planting zone along T5. WWildlands Engineering,Inc. (P)919.851.9986 • 312 West Millbrook Road,Suite 225 • Raleigh,NC 27609 WILDLANDS ENGINEERING DWR Comments, Erin Davis: 1. DWR appreciated the discussion of the storm damage and Old Olive Road sediment source during construction. It was important to have that context given what was shown in the photos, video, and restoration profile sheets.The excess sediment is concerning.Just a reminder that any channel maintenance activities should be proposed within the next two years, since the IRT wants to see the trajectory (stream/wetland) the credit features are trending through the second half of the monitoring period. Excess sediment has started to make its way through the channels. Wildlands does not plan to remove excess sediment at this point. 2. It was noted that sections of T2 and Sassarixa Creek Reach 2 were stable and didn't require construction of approved design structures. Since these areas were in backwater during construction, how was stream stability assessed? Do these areas still appear stable under summer baseflow conditions? Stability was assessed by looking at the bed and bank features and bed slope.Summer low flow conditions show a stable system in this area. The brush toe connects the constructed channel to the confluence of Sassarixa Swamp and the bed shows no signs of scour or erosion. 3. Sheet 1.25 shows two pipes, please confirm these structures were removed. The field drains were not removed;however, they remain above the point of jurisdiction on the channel. Removing the drains at the easement boundary was not viable due to high elevation of the pipe outlets on steep side slopes of the floodplain and the amount of concentrated flow they produced. If the drains were removed at the easement boundary, there was a very high likelihood of significant erosion on the side slopes. 4. Sheet 5.9 has a note that an area was not fenced because of the swamp. Please confirm whether the terminal boundaries of T4 and T5 were fenced as shown. A site walk was completed on November 8, 2021 to verify the terminal boundaries of T4 and T5 are fenced as reported. 5. Looking at the video, it appears there are mature pines present within and/or adjacent to the site. Has a pine management strategy been developed for the monitoring period? A pine management strategy has not been developed at this point. Wildlands will assess the situation and treat pines as needed. WWildlands Engineering,Inc. (P)919.851.9986 • 312 West Millbrook Road,Suite 225 • Raleigh,NC 27609 WILDLANDS ENGINEERING 6. Just to confirm, the video segment (9:30) of T2 is showing coir logs installed at the top of slope along the terrace? Yes, coir logs were installed at the top of slope along T2 to prevent erosion. If you have any questions, please contact me by phone (919) 851-9986, or by email (jlorch@wildlandseng.com). Sincerely, Jason Lorch, Monitoring Coordinator Wildlands Engineering,Inc. 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