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HomeMy WebLinkAbout20221366 Ver 1_PART 6 - Technical Approach_Bluebird__20220926TECHNICAL APPROACH AND RESTORATION PLAN BLUEBIRD MITIGATION SITE CHATHAM COUNTY, NORTH CAROLINA RFP #16-452048014 - FULL DELIVERY PROJECT TO PROVIDE STREAM AND RIPARIAN WETLAND MITIGATION CREDITS WITHIN CATALOGING UNIT 03030003 OF THE CAPE FEAR RIVER BASIN TABLE OF CONTENTS PART6: TECHNICAL APPROACH...................................................................................................................................1 1.1 Project Goals and Objectives...........................................................................................................1 1.2 Project Description..........................................................................................................................5 1.2.1 Soils.................................................................................................................................6 1.2.2 Stream Characterization.................................................................................................7 1.2.3 Sediment Model..............................................................................................................8 1.2.4 Nutrient Model................................................................................................................8 1.2.5 Site Design and Implementation Constraints..................................................................9 1.3 Project Development....................................................................................................................10 1.3.1 Stream Restoration.......................................................................................................10 1.3.2 Stream Enhancement (Level II).....................................................................................11 1.3.3 Individual Reach Descriptions.......................................................................................11 1.3.4 Wetland Restoration (Re-establishment)......................................................................12 1.3.5 Wetland Enhancement..................................................................................................12 1.3.6 Riparian Restoration.....................................................................................................12 1.3.7 Fence / Easement Marking...........................................................................................13 1.3.8 Nuisance Species Management....................................................................................13 1.4 Proposed Mitigation......................................................................................................................13 1.5 Current Ownership and Long-term Protection.............................................................................14 1.6 Project Phasing..............................................................................................................................14 1.7 Success Criteria.............................................................................................................................14 1.8 Quality Control..............................................................................................................................16 1.9 References.....................................................................................................................................18 LIST OF TABLES Table1. RBRP Goals.......................................................................................................................................................1 Table2A. INC SAM Summary..........................................................................................................................................2 Table2B. INC WAM Summary........................................................................................................................................3 Table 2C. Targeted Functions, Goals, Objectives, and Uplift Evaluation.......................................................................4 Table 3. Project Background Information......................................................................................................................5 Table4. Site Soils...........................................................................................................................................................6 Table 5. Essential Morphology Parameters...................................................................................................................7 Table 6. BEHI and NBS Modeling Summary...................................................................................................................8 Table 7. Threatened and Endangered Species..............................................................................................................9 Table 8. Individual Reach Descriptions and Functional Uplift.....................................................................................11 Table 9. Mitigation Activities and Site Credit Potential Summary...............................................................................13 Table10. Current Ownership.......................................................................................................................................14 Table 11. Proposed Project Schedule..........................................................................................................................14 Table12. Monitoring Schedule....................................................................................................................................15 Table13. Success Criteria............................................................................................................................................15 Table 14. Compatibility of Performance Criteria to Project Goals and Objectives......................................................15 Bluebird Mitigation Site Part 6 —Technical Approach Technical Proposal (RFP # 16-452048014) Table of Contents APPENDICES Appendix A. Figures Figure 1. Site Location Figure 2. Hydrologic Unit Map Figure 3A. Existing Topography and Drainage Area Figure 3B. Proposed Topography and Drainage Area Figures 4. Existing Conditions Figure 5. Soils Figure 6. LiDAR Figure 7. Proposed Conditions Appendix B. Stream & Wetland Data NCSAM Forms NCWAM Forms NCDWR Forms Cross -Sections BEHI & NBS Soil Boring Logs Appendix C. NHP Report, IPaC Resource List, and RCW SLOPES Determination Key Appendix D: Landowner Authorization (LOA) & Memorandum of Option Agreement (MOA) Appendix E: Completed and Signed RFP Attachments & Technical Scoresheet RFP Attachment D: HUB Supplemental Vendor Information RFP Attachment E: Supplemental Vendor Information RFP Attachment F: Location of Workers Utilized by Vendor RFP Attachment G: Certification of Financial Condition Completed Technical Proposal Scoresheet Bluebird Mitigation Site Part 6—Technical Approach Technical Proposal (RFP # 16-452048014) Table of Contents PART 6: TECHNICAL APPROACH Restoration Systems (RS) is pleased to provide you with this proposal in response to the Request for Proposals (RFP) #16-452048014 dated June 28, 2022. This proposal describes the merits of the Bluebird Mitigation Site (Site/Project). The general content of this technical proposal includes the following: • Project Staffing and Organization — Part 5 • Technical Approach — Part 6 - Project goals, objectives, description, development, and success criteria - Proposed mitigation - Current ownership and long-term protection of the Site - Project phasing/implementation schedule - Project success criteria - Quality control procedures Completed and signed RFP Attachments (D-G) Completed Technical Scoresheet 1.1 Project Goals and Objectives The Site is in the 14-digit Cataloging Unit 03030003070020 and subbasin 03-06-12. The Cape Fear River Basin Restoration Priorities (RBRP) report (NCEEP 2009) documents the Cape Fear River Basin's goals. These goals are summarized below, along with how they will be addressed by Project mitigation activities. The Site is in a Hydrology Targeted Resource Area (TRA), a Targeted Local Watershed (TLW), and a Local Watershed Planning (LWP) area. Table 1. RBRP Goals RBRP Goal Site Objectives Addressing RBRP Goals Reduction of 57.5 tons/year after mitigation is Reduce and control sediment inputs complete Livestock removal from streams will result in a direct Reduce and manage nutrient inputs reduction of 868 Ibs/yr of nitrogen, 72 Ibs/yr of phosphorus, and 9.4 x 1011 col of fecal coliform/day Protect and augment designated natural heritage areas NA Site -specific mitigation goals and objectives were developed using the North Carolina Stream Assessment Method (NC SAM) and North Carolina Wetland Assessment Method (NC WAM) analyses of existing stream systems at the Site (NC SFAT 2015 and NC WFAT 2010). Site functional assessment data forms are available upon request; model output is included in Appendix B and summarized in Tables 2A and 2B. Metrics targeted to meet the Site's goals and objectives are depicted in bold. Based on NC SAM output, all three primary stream functional metrics (Hydrology, Water Quality, and Habitat) and 19 sub -metrics are under -performing, as exhibited by a LOW metric rating (see Figure 4, Appendix A for NC SAM data reaches). LOW performing metrics are targeted for functional uplift through mitigation activities, goals, objectives, monitoring, and success criteria. Based on NC WAM output, all three primary wetland functional metrics (Hydrology, Water Quality, and Habitat) and 8 sub -metrics are under -performing, as exhibited by a LOW metric rating. LOW performing metrics are targeted for functional uplift through mitigation activities, goals, objectives, monitoring, and success criteria. Stream and wetland metrics targeted for functional uplift, tied to defined Site -specific project goals and objectives, are presented in Table 2C. Bluebird Mitigation Site Part 6—Technical Approach Technical Proposal (RFP # 16-452048014) Page 1 g Ln O J o 0 J 0 J 0 J 0 J 0 J 0 J 0 0 J 0 J 0 J 0 0 J 0 J 0} J O J O J O J o 0 J 0 0 J 0 J 0 J 0 J o Q cW cW cW cW cW g O J = o J o J o J o J o J o J 0 o J o J o J 2 o J o J o} J o J o J o J = o J 0 o J o J o J o J o J Q Ln cW c cW c � Q 3 O J �_�_ = o J o J o J o J o J o J 0 0 o J o J 2 o J o J o J } o J o J o J = 0 W 0 o J o J o J o J o J cW c cW c c cWc G QJ O (D = o J o J o J o J o J o J 0 0 o J o J �= = O J O J O J } O J O J O J �= = o 0 o J o J o J o J o J cW cW cW cW O J = O J o = o J o J o J 0 o J o J o J 2 o J o J o J } o J o J o J = o J 0 o J o J o J o J o J cW cW cW ' CL a Q � N o cW c 2 o cW c 0 cW c 2 0 cW c 2 0 cW c = 2 o cW c = 2 o cW c 2 o cWc G O J 2 o cW c 0 cWc G o cW c z 0 J o J o J 2 o cW c 0 cWc G 0 J = = 0 cW c 0 J C am c C E H LL a U z Q oc H (Q 0 oOc } 2 00 LL o o ►i O ++ m N .y N w ff M In V O o LL H m a m CL oEoo N O o A Q i CL `—' E w H M 41 �o a Gl E w H O CL ID N H~ C °C "' Q �' °�' "- m ° W v E v Ln c O LL M O C `—° a a M ao y E E z H M y O Vl O 0� ,co, — v V co a Q ~ Q ~ m Q x v� L n — >j O °�' m; m M a0+ L u Cn M L E �o W cn M + W + n 5 M .y E w N mm +_+ E af0i �n M O _O aN'o E v s M J J cc W Table 2B. NC WAM Summary NC WAM Sub -function Rating Summary WAM 1 WAM 2 WAM 3 WAM 3 WAM 3 Wetland Type Headwater Forest Headwater Forest Headwater Forest Headwater Forest Bottomland Hardwood Forest (1) HYDROLOGY — Site is in TRA LOW MEDIUM MEDIUM LOW LOW (2) Surface Storage & Retention LOW LOW LOW LOW LOW (2) Sub -surface Storage and Retention LOW HIGH HIGH LOW MEDIUM (1) WATER QUALITY LOW HIGH LOW LOW LOW (2) Pathogen change MEDIUM HIGH MEDIUM MEDIUM MEDIUM (2) Particulate Change LOW LOW LOW MEDIUM LOW (2) Soluble change LOW MEDIUM LOW LOW LOW (2) Physical Change LOW LOW MEDIUM LOW LOW (1) HABITAT LOW LOW LOW LOW LOW (2) Physical Structure LOW LOW LOW LOW LOW (2) Landscape Patch Structure LOW LOW LOW LOW LOW (2) Vegetative Composition LOW LOW MEDIUM MEDIUM MEDIUM OVERALL LOW LOW LOW LOW LOW This space was purposefully left blank Bluebird Mitigation Site Part 6—Technical Approach Technical Proposal (RFP # 16-452048014) Page 3 Table 2C. Targeted Functions, Goals, Objectives, and Uplift Evaluation DMS Functional Uplift Targeted Functions Goals Objectives Evaluations Identified Functional Stressor (Uplift Potential) (1) HYDROLOGY — This Site is in a Hydrology TRA (2) Flood Flow (3) Streamside Area Attenuation (4) Floodplain Access (4) Wooded Riparian Buffer (4) Microtopography (2) Wetland Surface Storage and Retention (2) Wetland Sub -surface Storage and Retention (3) Stream Stability (4) Sediment Transport (4) Stream Geomorphology (1) WATER QUALITY (2) Streamside Area Vegetation (3) Upland Pollutant Filtration (3) Thermoregulation (2) Indicators of Stressors (2) Aquatic Life Tolerance (2) Wetland Pathogen Change (2) Wetland Soluble Change (2) Wetland Physical Change • Minimize downstream flooding to the maximum extent possible. • Increase stream stability within the Site so that channels are neither aggrading nor degrading. • Remove direct and indirect nutrient and pollutant inputs from the Site and reduce contributions to downstream waters. • Construct a new channel at historic floodplain elevation to restore overbank flows • Plant woody riparian buffer • Deep rip floodplain soils to reduce compaction and increase soil surface roughness • Protect riparian buffers with a perpetual conservation easement • Remove incised/ditched streams • Construct channels with the proper pattern, dimension, and longitudinal profile • Remove livestock from the property • Construct stable channels with the appropriate substrate • Upgrade piped channel crossings • Plant woody riparian buffer • Stabilize stream banks • Remove agricultural livestock and reduce agricultural land/inputs • Plant woody riparian buffer • Restore/enhance jurisdictional wetlands adjacent to Site streams • Provide surface roughness and reduce compaction through deep ripping/plowing. • Restore overbank flooding by constructing channels at historic floodplain elevation. • Peak Flows (restore overbank flooding, surface water and subsurface water storage, increase frictional resistance to floodwaters, remove incised streams from floodplains) • Artificial Barriers (tie to two road culverts and upgrade piped stream crossings to restore aquatic life passage) • Ditching/Draining (remove incised streams within the floodplain) • Non-functioning Riparian Buffer/Wetland Vegetation (restoring or enhancing ^25 acres of riparian buffer) • Sediment (removing 57.5 tons per year of sediment from bank erosion) • Nutrients (removing 868 Ibs N/year and 72 Ibs P/year) • Fecal Coliform (removing 9.4x1011 colonies of fecal coliform/day) Bluebird Mitigation Site Part 6 —Technical Approach Technical Proposal (RFP # 16-452048014) Page 4 Table 2C. Targeted Functions, Goals, Objectives, and Uplift Evaluation (continued) DMS Functional Uplift Targeted Functions Goals Objectives Evaluations Identified Functional Stressor (Uplift Potential) (1) HABITAT (2) In -stream Habitat • Construct stable channels with the appropriate substrate • Plant woody riparian buffer to • Habitat Fragmentation (tie to two road culverts and (3) Substrate (3) In -Stream Habitat provide organic matter and upgrade piped stream (2) Stream -side Habitat shade • Construct a new channel at crossings to restore aquatic life passage) (3) Stream -side Habitat . Improve historic floodplain elevation to • Limited Bedform Diversity (3) Thermoregulation instream and stream -side restore overbank flows • Protect riparian buffers with a (restoring regular, sustained sequence of riffles and pools (2) Wetland Physical Structure habitat. perpetual conservation easement that do not fill with sediment) (2) Wetland Landscape Patch Structure • Restore/enhance jurisdictional • Absence of Large Woody wetlands adjacent to Site Debris (restoring woody (2) Wetland Vegetative streams debris on channel banks or in Composition • Stabilize stream banks bed) • Install in -stream structures 1.2 Project Description The Site is located approximately 0.2 miles south of Silk Hope in northwestern Chatham County (Figure 1, Appendix A). General Project information is included in Table 3. Table 3. Project Background Information Project Information Site Bluebird Mitigation Site County Chatham Easement Area 21.1 acres Site Coordinates (latitude & latitude) 35.776103,-79.366384 Site Elevations 630-580 feet Site Streams UT 1— UT 6 of Varnell Creek Physiography & Watershed Information Physiographic Province Piedmont Level IV Ecoregion Carolina Slate Belt River Basin Cape Fear USGS 14-digit HUC 03030003070020 NCDWR Sub -basin 03-06-12 Targeted Local Watershed Yes LWP, RWP, TRA* Yes, No, Yes (Hydrology TRA) Bluebird Mitigation Site Part 6—Technical Approach Technical Proposal (RFP # 16-452048014) Page 5 Table 3. Project Background Information (continued) Water Quality Information Stream Index Number Varnell Creek 17-43-11 Best Use Classification C 303d List No Drainage Area & Land Use Information Existing Site Land Use Livestock pasture, hayfield, forest Site Drainage Area 0.40 square miles (253.1 acres) Site Drainage Area Land Use Livestock pasture, forest, residential Site Drainage Area Percentage Impervious Surface <2% *LWP=Local Watershed Plan, RWP=Regional Watershed Plan, TRA=Targeted Resource Area 1.2.1 Soils Based on Web Soil Survey mapping (USDA 2022), the Site contains the soil series outlined in Table 4. A licensed soil scientist (NC LSS # 1233) mapped existing wetlands and drained hydric soils of the Wehadkee series April 12, 2022 (Figure 5, Appendix A); soil boring logs are included in Appendix B. Table 4. Site Soils Map Unit Map Unit Name Hydric Status Description Symbol (Classification) This series consists of moderately deep to very deep, Non-hydric somewhat poorly drained to moderately well drained, slow Cid-Lignum complex but may to very slowly permeable soils on interstream divides, CmB (Aquic Hapludults) contain hydric broad ridges, drainageways, and heads of drainageways. inclusions Parent material is residuum weathered from argillite and other fine-grained metavolcanic rock. Depth to the seasonal high-water table is 1 to 2.5 feet. This series consists of very deep, well drained, moderately Georgeville silt clay loam permeable soils on Piedmont uplands. Parent material is GeC2 (Typic Kanhapludults) Non-hydric residuum weathered from fine-grained metavolcanic rock of the Carolina Slate Belt. Depth to the seasonal high-water table is more than 5 feet. This series consists of deep to moderately deep, well Nanford-Badin complex drained, moderately permeable soils on Piedmont uplands. NaC (Typic Kanhapludults) and Non-hydric Parent material is residuum weathered from fine-grained (Typic Hapludults) metavolcanic rock. Depth to the seasonal high-water table is more than 6 feet. This series consists of moderately deep to very deep, Pittsboro-Iredell complex moderately well drained, very slowly permeable soils on PsB (Oxyaquic Hapludalfs) and Non-hydric Piedmont uplands. Parent material is residuum weathered (Vertic Hapludalfs) from mafic rock. Depth to the seasonal high-water table is 1 to 2 feet. Bluebird Mitigation Site Part 6—Technical Approach Technical Proposal (RFP # 16-452048014) Page 6 Geology As mentioned in Table 3, the Site is within the Carolina Slate Belt, where soils outside the stream floodplains have formed in residuum weathered from felsic-ash flow tuffs, intermediate to mafic lava flows, and other fine-grained metavolcanic rocks. As a result, soils in the Site are highly variable. At times, these soils were mapped as complexes due to the scale at which they were mapped. This variability in the soils results in a multitude of factors promoting lateral groundwater movement, including depth to restrictive layers, presence of sandy subsoil lenses, slow to moderate permeability, high silt and clay content, and sticky and plastic soil consistency. These soil characteristics result in wetland seeps at the heads of drainageways and along lower portions of side slopes, typical of stream origins at the Site. Landscape The Site's landscape includes broken/sharply irregular convex slopes ranging from 2 - 10% with short valley sides. This topography results in short and stubby first and second -order streams with high angle junctions. The contributing drainage area of the Site's unnamed tributaries (UT) has been affected by livestock pastures with eroded soil surfaces and agricultural ponds, increasing the rate and amount of surface water runoff entering the Site. These conditions, coupled with the geology and soils, facilitate surface and subsurface water movement resulting in wetland seeps observed throughout the Site 1.2.2 Stream Characterization Table 5 summarizes morphology parameters existing at the Site and preliminary estimates of stable stream attributes based upon regional curves for the Piedmont region of North Carolina (Harmen et al. 1999). The channels appear to be straightened, as evidenced by low sinuosity values across much of the Site. In general, Site streams are oversized; however, ditching and dredging and livestock trampling have led to stream channels that are incised and narrow (low width -to -depth ratio) and are actively eroding. In addition, a lack of habitat and structure occurs within the channels, leading to opportunities to significantly improve aquatic life propagation and survival. Table 5. Essential Morphology Parameters Parameter XS 1 (UT 1) XS 2 (UT 3) XS 3 (UT 4) XS 4 (UT 5) Existing Proposed* Existing Proposed* Existing Proposed* Existing Proposed* Valley Width (ft) 250 250 50 50 50 50 8 50 Contributing Drainage Area (sq. mi.) 0.29 0.29 0.05 0.05 0.08 0.08 0.03 0.03 Discharge (dfs) 36.4 36.4 10.2 10.2 14.4 14.4 7.1 7.1 Channel/Reach Classification E-type C/E-type E-type C/E-type E-type C/E-type E/G-type C/E-type Bankfull Cross -sectional Area (ftz) 6.2 9.3 2.8 2.8 3.9 3.9 2.0 2.0 Existing Cross -sectional Area (ft2) 6.2 9.3 2.8 2.8 3.9 3.9 10.2 2.0 Bankfull Width (ft) 4.5 8.4 5.4 4.3 6.0 5.1 3.2 3.5 Bankfull Depth (ft) 1.4 1.1 0.5 0.7 0.7 0.8 0.6 0.6 Maximum Depth (ft) 2.0 1.4 1.3 0.9 1.2 1.0 1.4 0.8 Low Bank Height (ft) 2.0 1.4 1.3 0.9 1.2 1.0 2.8 0.8 Flood Prone Area (ft) 250 250 50 50 50 50 8 50 Width/Depth Ratio 3.3 7.6 10.3 6.4 9.0 6.7 5.0 6.1 Bank Height Ratio 1.0 1.0 1.0 1.0 1.0 1.0 2.0 1.0 Entrenchment Ratio 55.7 29.8 9.2 11.6 8.4 9.8 2.5 14.3 Sinuosity 1.01 1.15 1.03 1.15 1.03 1.15 1.02 1.15 Substrate Sand/ Silt Cobble/ gravel Sand/Silt Cobble/ gravel Sand/Silt Cobble/ gravel Sand/ Silt Cobble/ gravel *Preliminary estimates of stable stream attributes are based primarily upon regional curves for the Piedmont region of North Carolina (Harmen et al. 1999). Bluebird Mitigation Site Part 6-Technical Approach Technical Proposal (RFP # 16-452048014) Page 7 1.2.3 Sediment Model Sediment load modeling was performed using methodologies outlined in A Practical Method of Computing Streambank Erosion Rate (Rosgen 2009) and Estimating Sediment Loads using the Bank Assessment of Non -point Sources Consequences of Sediment (Rosgen 2011). These models provide a quantitative prediction of streambank erosions by calculating Bank Erosion Hazard Index (BEHI) and Near -Bank Stress (NBS) along each Site reach. The resulting BEHI and NBS values are compared to streambank erodibility graphs prepared for North Carolina by the NC Stream Restoration Institute and NC Sea Grant. Streambank characteristics involve measurements of bank height, angles, materials, presence of layers, rooting depth, rooting density, and percent of the bank protected by rocks, logs, roots, or vegetation. Site reaches have been measured for BEHI and NBS characteristics and predicted lateral erosion rate, height, and length to calculate a cubic volume of sediment contributed by the reach each year. Data forms for the analysis are available upon request, and the data output is presented in Appendix B. Model results are shown in Table 6. Table 6. BEHI and NBS Modeling Summary Stream Reach Proposed Mitigation Treatment Predicted Sediment Contribution (tons/year) UT 1 Restoration 34.3 UT 2 Restoration 3.0 UT 3 Restoration 11.0 UT 4 Restoration 3.4 UT 5 Restoration 5.9 Total Sediment Contribution (tons/year) 57.5 1.2.4 Nutrient Model Nutrient modeling was conducted using a method developed by the North Carolina Division of Mitigation Services (NCDMS) (NCDMS 2016) to determine nutrient and fecal coliform reductions from the exclusion of livestock from the buffer. The equation for nutrient reduction for this model includes the following: TN reduction (Ibs/yr) = 51.04 (Ibs/ac/yr) x Area (ac) TP reduction (Ibs/yr) = 4.23 (Ibs/ac/yr) x Area (ac) Where: TN — total nitrogen; TP —total phosphorus; and Area —total area of restored riparian buffers inside of livestock exclusion fences. Equations for fecal coliform reduction for this model include the following. Fecal coliform reduction (col) = 2.2 x 1011(col/AU/day) x AU x 0.085 Where: Col - quantities of Fecal Coliform bacteria AU - animal unit (1000 Ibs of livestock) Assuming approximately 17 of the 21.1 acres of the Site will have livestock removed, and a current stocking rate of 50 head of livestock residing on the farm, the NC DMS analysis calculates approximately 868 Ibs/yr of nitrogen, 72 Ibs/yr of phosphorus, and 9.4 x 1011 col of fecal coliform/day will be reduced via exclusion of livestock from the easement area. Bluebird Mitigation Site Part 6—Technical Approach Technical Proposal (RFP # 16-452048014) Page 8 1.2.5 Site Design and Implementation Constraints During field surveys, no known Site constraints that may hinder proposed mitigation activities were identified. Potential constraints reviewed include the following: Threatened & Endangered Species Federally protected species listed by the US Fish and Wildlife — Information for Planning and Consultation (IPaC) website "as occurring in the vicinity" of the Site are summarized in Table 7, along with potential habitat and a preliminary biological conclusion for each species (IPaC 2022). Table 7. Threatened and Endangered Species Common Name Federal Habitat at Biological (Scientific Name) Status Site Conclusion Summary Red -cockaded Woodpecker Habitat does not exist in or near (Picoides borealis) Endangered No No Effect the Project boundaries. Cape Fear Shiner Endangered Yes Unresolved Habitat exists in or near the (Notripis mekistocholas) Project boundaries. Atlantic Pigtoe Habitat exists in or near the (Fusconaia masoni) Threatened Yes Unresolved Project boundaries. Harperella Endangered Yes Unresolved Habitat exists in or near the (Ptilimnium nodosum) Project boundaries. Red -cockaded Woodpecker Primary habitat consists of mature to over -mature southern pine forests dominated by loblolly (Pinus taeda), long- leaf (P. palustris), slash (P. elliottii), and pond (P. serotina) pines (Thompson and Baker 1971). Nest cavities are constructed in the heartwood of living pines, generally older than 70 years and infected with red -heart disease. Nest cavity trees tend to occur in clusters, referred to as colonies (FWS 1985). Habitat for this species does not exist within the Project area. In addition, the Site does not occur within a Red - cockaded Woodpecker Consultation Area, as designated by the US Fish and Wildlife Service (see SLOPES key in Appendix C). Therefore, this Project is not expected to affect this species. Cape Fear Shiner Habitat elements include clean streams with gravel, cobble, and boulder substrates with pools, riffles, shallow runs and slackwater areas with large rock outcrops and side channels and pools with water of good quality with relatively low silt loads (USFWS 2003). Habitat for this species exists within the Project area. A site -wide survey will be conducted prior to initiating construction activities. Atlantic pigtoe Habitat includes streams with yielding substrates composed of coarse sand and gravel downstream from riffle areas (TSCFTM 1990). Habitat for this species exists within the Project area. A site -wide survey will be conducted before initiating construction activities. Harperella This plant is a relatively prolific annual, and large numbers may occur within each population, especially along rivers (FWS 2003). Habitat includes (1) rocky or gravel shoals and margins of clear, swift -flowing stream sections; and (2) edges of intermittent pineland ponds in the coastal plain. This plant tolerates and may require a particular and Bluebird Mitigation Site Part 6—Technical Approach Technical Proposal (RFP # 16-452048014) Page 9 unusual water regime, including moderately intensive spring floods, which may reduce or eliminate competing vegetation. Habitat for this species exists within the Project area. A site -wide survey will be conducted during the survey window (July to early September) and before initiating construction activities. Cultural Resources Field visits were conducted at the Site in April 2022. No structures or other features that may be eligible for inclusion on the National Register of Historic Places were identified within proposed easement boundaries; however, coordination with State Historic Preservation Office will occur before construction activities to determine if any significant cultural resources are present. North Carolina Natural Heritage Elements A query of the North Carolina Natural Heritage Program (NCNHP) database indicates there are no records for rare species, important natural communities, natural areas, or conservation/managed areas within the proposed Site boundary. Within a one -mile radius of the Site, NCNHP lists no federally -protected species (Appendix C). Within a one -mile radius of the Project area, NCNHP identifies one managed area (Triangle Land Conservancy Preserve). FEMA FEMA Flood Insurance Rate Maps were inspected for the Project: Rate Map 3710878200J, Panel 8782, effective 2/2/2007. FEMA mapping indicates that the Site is not located within a Zone AE flood area. Therefore, a "Conditional Letter of Map Revision" (CLOMR) is not expected for this Site. However, coordination with FEMA will occur throughout the Project. Utilities No utilities cross the Site. Utility crossings are not expected to adversely affect the Project. Air Transport Facilities No air transport facilities occur within 5 miles of the Site. Therefore, air transport facilities are not expected to adversely affect the Project. 1.3 Project Development 1.3.1 Stream Restoration Stream restoration efforts are designed to restore a stable stream that approximates hydrodynamics, geometry, and local microtopography relative to reference stream conditions. Restoration at the Site will be Priority I restoration, raising the bankfull elevations to meet the adjacent valley floodplain elevation. Stream restoration is expected to entail 1) channel excavation, 2) channel stabilization, 3) channel diversion, and 4) channel backfill. In -stream Structures: In -stream structures will be used for grade control, habitat, and to elevate local water surface profiles in the channel, flattening the water -energy slope or gradient and directing stream energy into the center of the channel and away from banks. The structures will consist of log cross -vanes or log j-hook vanes; however, at the Engineer's discretion, rock cross -vanes or rock j-hook vanes may be substituted if dictated by field conditions. In addition, the structures will be placed in relatively straight reaches to provide secondary (perpendicular) flow cells during bankfull events. Channel Crossings: Active cattle farming surrounding the Site will necessitate installing several piped/bridged crossings within easement breaks to allow access to portions of the property isolated by stream restoration activities. Piped crossings will be constructed of properly sized pipes and hydraulically stable rip -rap or suitable rock. Crossings will be large enough to handle the weight of anticipated vehicular traffic. Approach grades will be at an approximate 10:1 slope and constructed of scour -resistant crushed rock or other permeable material free of fines. Bluebird Mitigation Site Part 6—Technical Approach Technical Proposal (RFP # 16-452048014) Page 10 1.3.2 Stream Enhancement (Level II) Stream enhancement (level II) will entail installing easement markers and planting riparian buffers with native forest vegetation, targeted streambank stabilization, and livestock exclusion to facilitate stream recovery and prevent further stream degradation. Stream enhancement (Level II) is proposed for a short section of UT 3. This reach of UT 3 is characterized by a relatively stable channel with a narrow fringe of trees and is therefore proposed at a mitigation ratio of 7.5:1. 1.3.3 Individual Reach Descriptions Mitigation activities for each stream reach and anticipated functional uplift are summarized in Table b. Table 8. Individual Reach Descriptions and Functional Uplift Reach Mitigation Activities Functional Uplift Provided for Identified Stressors • Non-functioning riparian • Upfit the existing pond outfall to prevent further erosion buffer/wetland vegetation • Tie into the channel at the upstream pond dam and initiate P1 stream restoration. • Sediment • Install grade control/habitat structures. • Nutrients UT-1 • Install two piped/bridged channel crossings. • Fecal Coliform • Restore and enhance wetlands adjacent to the channel. • Ditching/Draining • Remove livestock from the property. • Habitat Fragmentation • Plant a vegetative buffer within the entire floodplain. • Limited Bedform Diversity • Absence of Large Woody Debris • Non-functioning riparian buffer/wetland vegetation • Tie into road culvert and Initiate P1 stream restoration. • Sediment • Direct channel down historic floodplain towards UT 4 and continue P1 restoration. • Tie into UT 4 at the appropriate elevation/location. 9 Nutrients • Fecal Coliform UT-2 • Install grade control/habitat structures. • Peak Flows • Remove livestock from the easement area. • Ditching/Draining • Restore and enhance adjacent wetlands. • Habitat Fragmentation • Plant a vegetative buffer within the entire floodplain. • Limited Bedform Diversity • Absence of Large Woody Debris • Non-functioning riparian • Tie into the culvert at the upper reaches and initiate P1 stream restoration. buffer/wetland vegetation • Elevate the stream to tie into adjacent wetland restoration/enhancement. • Sediment • Enter woods and begin stream Enhancement (Level II) through bank stabilization . Nutrients UT-3 and livestock removal. • Fecal Coliform • Below woods, begin P1 stream restoration, ultimately directing the stream into a Peak Flows historic channel. • Ditching/Draining • Fencing livestock, treating invasive species and planting forest vegetation. • Tie into UT 1 at the appropriate location and elevation. • Limited Bedform Diversity • Absence of Large Woody Debris • Non-functioning riparian • Install a piped channel crossing at the property boundary. buffer/wetland vegetation • Initiate P1 stream restoration at the upper limits of the reach • Sediment • Maintain natural grade at a headcut and restore the channel to a new location at the historic floodplain's elevation. . Nutrients • Fecal Coliform UT-4 • Restore and enhance wetlands adjacent to the channel. • Peak Flows • Tie into UT 5 and then install a piped channel crossing. • Ditching/Draining • Tie into UT 1 at the appropriate elevation/location. • Habitat Fragmentation • Remove livestock from the easement. • Limited Bedform Diversity • Plant a vegetative buffer within the entire floodplain. • Absence of Large Woody Debris Bluebird Mitigation Site Part 6—Technical Approach Technical Proposal (RFP # 16-452048014) Page 11 Table 8. Individual Reach Descriptions and Functional Uplift (continued) Reach Mitigation Activities Functional Uplift Provided for Identified Stressors • Non-functioning riparian • Initiate P1 stream restoration in an abandoned pond bed. buffer/wetland vegetation • Continue P1 stream Restoration techniques down the valley. • Sediment • Install habitat/grade control structures. • Nutrients • Restore and enhance adjacent wetlands by tying the stream channel to the • Fecal Coliform UT-5 adjacent floodplain. • Peak Flows • Tie to UT 4 at the appropriate location and elevation. • Ditching/Draining • Remove livestock from the property. • Habitat Fragmentation • Plant a vegetative buffer within the entire floodplain. • Limited Bedform Diversity • Absence of Large Woody Debris • Install a piped crossing across wetlands upstream of origin. • Sediment • Tie into springs at the base of a slope. • Nutrients • Initiate Priority 1 stream restoration. • Fecal Coliform UT-6 • Install habitat/grade control structures. • Ditching/Draining • Tie to UT 3 at the appropriate location and elevation. • Limited Bedform Diversity • Remove livestock from the easement. • Absence of Large Woody Debris • Plant a vegetative buffer within the entire floodplain. 1.3.4 Wetland Restoration (Re-establishment) Alternatives for wetland re-establishment are designed to restore a fully functioning wetland system, provide surface water storage, nutrient cycling, remove imported elements and compounds, and create various wildlife habitats. Portions of the Site underlain by hydric soils have been impacted by stream entrenchment, vegetative clearing, livestock disturbance, and other land disturbances associated with land use management. Wetland re- establishment/rehabilitation options focus on the restoration of vegetative communities, restoration of stream corridors and historic groundwater tables, and the re-establishment of soil structure and microtopographic variations. In addition, the construction of (or provisions for) surface water storage depressions (ephemeral pools) will also add an important component to groundwater restoration activities. These activities will result in the re- establishment of approximately 2.565 acres of jurisdictional riparian riverine wetlands. 1.3.5 Wetland Enhancement Wetland enhancement will focus on removing livestock and restoring vegetation communities, improving wetland function to 4.173 acres of riparian riverine wetlands. 1.3.6 Riparian Restoration Restoration of floodplain forests allows for developing and expanding characteristic species across the landscape. Ecotonal changes between community types contribute to species diversity and provide secondary benefits, such as enhanced feeding and nesting opportunities for mammals, birds, amphibians, and other wildlife. Revegetating floodplains will provide overall system stability, shade, and wildlife habitat. In addition, viable riparian communities will improve biogeochemical function by filtering pollutants from overland and shallow subsurface flows and providing organic materials to adjacent stream channels. Variations in vegetative planting will occur based on topography and hydrologic condition of soils. Vegetative species composition will be based on Reference Forest Ecosystems (RFEs), site -specific features, and community descriptions from Guide to the Natural Communities of North Carolina (Schafale 2012). Community associations to be utilized include 1) a combination of Piedmont Alluvial Forest and Piedmont Headwater Forest, 2) Dry-Mesic Oak -Hickory Forest, and 3) Streamside Assemblage. Bluebird Mitigation Site Part 6—Technical Approach Technical Proposal (RFP # 16-452048014) Page 12 Bare -root seedlings within the Piedmont Alluvial/Headwater Forest and Dry-Mesic Oak -Hickory will be planted at approximately 680 stems per acre on 8-foot centers. Stream -side assemblage will be planted at a density of approximately 2,720 stems per acre on 4-foot centers. Planting will be performed between November 15 and March 15 to allow plants to stabilize during the dormant period and set root during the spring season. Potential species planted within the Site may include the following. Piedmont Alluvial/Headwater Forest Dry-Mesic Oak -Hickory Forest 1. Sycamore (Platanus occidentalis) 2. American elm (Ulmus americana) 3. Hackberry (Celtis laevigata) 4. Green ash (Fraxinus pennsylvanica) 5. Shagbark hickory (Carya ovata) 6. Willow oak (Quercus phellos) 7. Shumard oak (Quercus shumardii) 8. River birch (Betula nigra) 9. Silky dogwood (Cornus amomum) 10. Pawpaw (Asimina triloba) Stream -Side Assemblage 1. Black willow (Salix nigra) 2. Tag alder (Alnus serrulata) 3. Buttonbush (Cephalanthus occidentalis) 1. White oak (Quercus alba) 2. Northern red oak (Quercus rubra) 3. Pignut hickory (Carya glabra) 4. Mockernut hickory (Carya alba/tomentosa) 5. Black gum (Nyssa sylvatica var. sylvatica) 6. Flowering dogwood (Cornus florida) 7. Eastern red cedar (Juniperus virginiana) 8. Persimmon (Diospyros virginiana) 9. Ironwood (Carpinus caroliniana) 1.3.7 Fence / Easement Marking The entire easement area will be fenced and/or appropriately marked to identify the easement boundaries per United States Army Corps of Engineers (USACE) and Interagency Review Team (IRT) requirements. Livestock is to be removed entirely from the Site. 1.3.8 Nuisance Species Management Beaver, privet, and other potential nuisance species will be monitored throughout the 7-year monitoring period. Appropriate actions to ameliorate any negative impacts regarding vegetation development and/or water management will occur as needed. 1.4 Proposed Mitigation Mitigation outlined in this proposal is designed to provide the following, as calculated under the requirements stipulated in RFP #16-452048014, and is summarized in Table 9. Table 9. Mitigation Activities and Site Credit Potential Summary Stream Mitigation Type Type Linear Feet Ratio SMUs Restoration Priority 1 7,034.288 1:1 7,034.288 Enhancement Level 11 122.781 7.5:1 16.371 Totals 7,157.069 7,050.659 SMUs Wetland Mitigation Type Type Acreage Ratio Riparian Riverine WMU Re-establishment Riparian Riverine 2.565 1:1 2.565 Enhancement Riparian Riverine 4.173 2:1 2.087 Totals 6.738 4.652 WMUs Bluebird Mitigation Site Technical Proposal (RFP # 16-452048014) Part 6—Technical Approach Page 13 1.5 Current Ownership and Long-term Protection Current property ownership and parcel information are as follows: Table 10. Current Ownership Current Property Owner Parcel ID Number Clyde Reid Perry Jr. 0089643, 0010345, 0010410, and 0087985 Restoration Systems has an Agreement for the Purchase and Sale of a Conservation Easement (Agreements) with the property owners. Memorandums of the agreements were recorded in the Chatham County Register of Deeds (Appendix D). Complete copies of these Agreements are available upon request. Upon approval of the contract, Restoration Systems will place a conservation easement over the subject parcels; such easement will be conveyed to the State of North Carolina. Restoration Systems will remain responsible for Project implementation, the achievement of success criteria, and management actions. A long-term management plan that, in general, will include protecting the Site from encroachment, trespass, clearing, and other violations that interfere with conservation purposes will be developed for the Site and incorporated into the mitigation plan. Other activities may be included based on site -specific considerations. 1.6 Project Phasing A tentative Project phasing schedule is presented in Table 11 and commences upon contract execution. Table 11. Proposed Project Schedule Task Project Milestones Months from Contract Execution Task 1 Regulatory Site Visit & Environmental Screening 3 Task 2 Submit Recorded Conservation Easement on the Site 16 Task 3 Mitigation Plan (Final Draft) and Financial Assurance 12 Task 4 Mitigation Site Earthwork Complete 24 Task 5 Mitigation Site Planting and Installation of Monitoring Devices 25* Task 6 Baseline Monitoring Report (including As -built Drawings) 28* Task 7 Submit Monitoring Report #1 to NCDMS Dec. after implementation Task 8 Submit Monitoring Report #2 to NCDMS Dec. - 2yrs after implementation Task 9 Submit Monitoring Report #3 to NCDMS Dec. - 3yrs after implementation Task 10 Submit Monitoring Report #4 to NCDMS Dec. - 4yrs after implementation Task 11 Submit Monitoring Report #5 to NCDMS Dec. - 5yrs after implementation Task 12 Submit Monitoring Report #6 to NCDMS Dec. - 6yrs after implementation Task 13 Submit Monitoring Report #7 to NCDMS and Complete Project Close-out Process Dec. - 7yrs after implementation and Spring after submittal of Report #7 * Time frame is dependent upon seasonal conditions after Site implementation. 1.7 Success Criteria Tables 12-14 summarize the monitoring schedule and success criteria for this Project, which follow the October 24, 2016, NC Interagency Review Team Wilmington District Stream and Wetland Compensatory Mitigation Update. Bluebird Mitigation Site Part 6—Technical Approach Technical Proposal (RFP # 16-452048014) Page 14 Table 12. Monitoring Schedule Resource Year 1 Year 2 Year 3 Year 4 Year 5 Year 6 Year 7 Streams X X X X X Wetlands X X X X X X X Vegetation X X X X X Visual Assessment X X X X X X X Report Submittal X X X X X X X Table 13. Success Criteria Streams • All streams must maintain an Ordinary High -Water Mark (OHWM), per RGL 05-05. • Bank height ratio (BHR) cannot exceed 1.2 at any measured cross-section over the monitoring period. • BHR at any measured riffle cross-section should not change by more than 10% from baseline conditions during the monitoring period. • The stream project shall remain stable, and all other performance standards shall be met through four separate bankfull events, occurring in individual years, during the monitoring years 1-7. Wetland Hydrology • Saturation or inundation within the upper 12 inches of the soil surface for, at a minimum, 12 percent of the growing season, during average climatic conditions (IRT 2016). Vegetation • Within planted portions of the Site, a minimum of 320 stems per acre must be present at year 3; a minimum of 260 stems per acre must be present at year 5; and a minimum of 210 stems per acre must be present at year 7. • In the Piedmont counties, trees must average 7 feet in height at year 5 and 10 feet in height at year 7 in each plot. • Planted and volunteer stems are counted, provided they are included in the approved planting list for the Site; natural recruits not on the planting list may be considered by the IRT on a case -by -case basis. • Any single species can only account for up to 50% of the required number of stems within any vegetation plot. Table 14. Compatibility of Performance Criteria to Project Goals and Objectives Goals Objectives Success Criteria (1) HYDROLOGY —The Site is in a Hydrology TRA • Construct a new channel at historic floodplain elevation to • BHR not to exceed 1.2 over the • Minimize restore overbank flows monitoring period downstream • Plant woody riparian buffer • Document four overbank events flooding to the • Deep rip floodplain soils to reduce compaction and increase soil in separate monitoring years maximum extent surface roughness • Attain Wetland Hydrology possible. • Protect riparian buffers with a perpetual conservation easement Success Criteria • Remove incised/ditched streams • Attain Vegetation Success Criteria • Conservation Easement recorded • Cross-section measurements • Construct channels with the proper pattern, dimension, and indicate a stable channel with the • Increase stream longitudinal profile appropriate substrate stability within the .Remove livestock from the easement • Visual documentation of stable Site so that channels . Construct stable channels with the appropriate substrate channels and structures are neither . Upgrade/install piped channel crossings • BHR not to exceed 1.2 over the aggrading nor monitoring period degrading. . Plant woody riparian buffer • < 10% change in BHR over the • Stabilize stream banks monitoring period • Attain Vegetation Success Criteria Bluebird Mitigation Site Part 6—Technical Approach Technical Proposal (RFP # 16-452048014) Page 15 Table 14. Compatibility of Performance Criteria to Project Goals and Objectives (continued) Goals Objectives Success Criteria (1) WATER QUALITY • Remove direct and . Remove agricultural livestock and reduce agricultural land/inputs • BHR not to exceed 1.2 over the indirect nutrient . Plant woody riparian buffer monitoring period and pollutant • Restore/enhance jurisdictional wetlands adjacent to Site streams • Document four overbank events inputs from the Site and reduce . Provide surface roughness and reduce compaction through deep in separate monitoring years contributions to ripping/plowing. •Attain Wetland Hydrology Success downstream • Restore overbank flooding by constructing channels at historic Criteria waters. floodplain elevation. • Attain Vegetation Success Criteria (1) HABITAT • Cross-section measurement indicate a stable channel with the • Construct stable channels with the appropriate substrate appropriate substrate • Plant woody riparian buffer to provide organic matter and shade • Visual documentation of stable • Construct a new channel at historic floodplain elevation to channels and in -stream structures • Improve instream restore overbank flows • BHR not to exceed 1.2 over the and stream -side • Protect riparian buffers with a perpetual conservation easement monitoring period habitat. • Restore/enhance jurisdictional wetlands adjacent to Site • Document four overbank events streams in separate monitoring years • Stabilize stream banks • Attain Wetland Hydrology • Install in -stream structures Success Criteria • Attain Vegetation Success Criteria • Conservation Easement recorded 1.8 Quality Control Our core business at IRS is full -delivery ecosystem restoration (usually within the context of compensatory mitigation); as such, our projects are repeatedly scrutinized. More importantly, our compensation is tied directly to project quality. Thus, quality assurance and quality control (QA/QC) is of the utmost importance to our compensation and reputation. The IRS QA/QC program comprises a broad range of general and specific measures to ensure that all deliverables submitted to the contracting organization meet projected schedules, follow appropriate formats, and comply with applicable laws, regulations, and permits. General Measures: - Staff Qualifications — IRS employs trained and/or experienced staff in varied specific aspects of environmental restoration. Examples include regulatory affairs, permitting, design, geomorphology, chemistry, biology, soils, Geographic Informational Systems (GIS), and invasive species management. Field Training — Staff members attend periodic workshops for training in pertinent topics to improve and/or maintain necessary skills related to stream/wetland design and construction. Staff members have also participated in stream and wetland restoration workshops, including those held by North Carolina State University's Stream Restoration Institute (SRI), focusing on proper procedures related to stream restoration practices. Restoration Systems periodically has internal workshops and field study days led by experienced staff members to ensure that the team of Project Managers is up-to-date on current practices and technology. - Internal Experience - Office staff members periodically attend workshops led by professional organizations to remain current on best practices. All projects are backed by a support team. Senior -level professionals are consulted to successfully guide the process from start to finish. Bluebird Mitigation Site Part 6—Technical Approach Technical Proposal (RFP # 16-452048014) Page 16 Specific Measures: - Project Implementation -The core of RS's project implementation QA/QC program utilizes task changeover points within the restoration process. Procedural verification steps at each changeover point provide control and correction opportunities, minimizing waste while ensuring a project meets its objectives. Quality Control - Ecosystem restoration projects o Site evaluation ■ Identify and document site constraints that will affect restoration objectives, design, and construction o Design evaluation ■ Verify design meets objectives and is practicable given construction constraints and site - specific conditions o Construction plan evaluation ■ Ensure the construction plan is consistent with permit conditions and efficiently implements design (i.e., limits the number of phases) o Construction environmental and permit compliance ■ Routine inspection of construction activities to ensure environmental compliance and that all work is performed according to specifications and limitations of acquired permits o Design and construction reconciliation ■ Reconcile construction drawings with implementation routinely, especially before transitioning between construction phases o Construction drawing and as -built reconciliation ■ Verify the accuracy of as -built drawings and reconcile them with construction drawings, noting deviations and their explanations o Site closeout ■ confirm planting was performed with appropriate species composition and density ■ check that all excess construction materials have been removed and all features/structures are in a completed condition - Assignment of specific tasks and responsibilities — Specific tasks that occur throughout a project's life are assigned to specific individuals who are trained and/or experienced to perform that task. All arrangements are overseen by senior management. The project implementation QA/QC program is a collaborative effort between the Senior Project Manager and Construction Manager). The project manager or the construction manager (or both) will be on -site during construction hours to ensure environmental compliance and the appropriate implementation of the Project's design. - Deliverable Preparation — a series of measures are taken to prepare deliverables to ensure each product meets the customer's expectations promptly. 0 Checklists and Templates — IRS staff has developed internal guidelines, checklists, and templates to prepare all deliverables to ensure compliance with appropriate requirements and schedules. Checklists are created to ensure that all required paperwork is included when assembling submittal packages and easy delegation of workflow. 0 Peer Review of Documents — All submitted deliverables are reviewed by several qualified individuals. Once a document has been generated internally or received from an assigned consultant, it is entered into a three -round internal review process. It is first reviewed by staff members with experience in editing. The document is then passed on to staff members with specific expertise in a given area to ensure accuracy. Finally, where applicable, maps and diagrams are reviewed by an experienced GIS Manager for accuracy. Once all comments are made, the document is edited and distributed for a final round of review by staff members and the assigned Project Manager before packaging. Bluebird Mitigation Site Part 6—Technical Approach Technical Proposal (RFP # 16-452048014) Page 17 0 Prolect Managers' Meetings —All managers meet weekly to update company management on each Project's status, including the projected future timeline of tasks. Prolect Coordination and Tracking — Restoration Systems' Project Manager and Construction Manager utilize appropriate computer software to produce a Gantt chart for each Project. These charts graphically display each Project's schedule and are used to identify potential delays, overload points, and other issues related to schedules. Each chart is reviewed weekly at the Project Managers' meeting. 1.9 References Harman, W.A., G.D. Jennings, J.M. Patterson, D.R. Clinton, L.A. O'Hara, A. Jessup, R. Everhart. 1999. Bankfull Hydraulic Geometry Relationships for North Carolina Streams. N.C. State University, Raleigh, North Carolina. Information for Planning and Consultation (IPaC). 2022. United States Fish and Wildlife Service (online). Available: https:Hipac.ecosphere.fws.gov/ (April 1, 2022). North Carolina Division of Mitigation Services (NCDMS). 2016. Quantifying Benefits to Water Quality from Livestock Exclusion and Riparian Buffer Establishment for Stream Restoration. June 15, 2016. North Carolina Department of Environmental Quality, Raleigh, North Carolina. North Carolina Department of Environmental Quality (NCDEQ). 2020. 2020 Final North Carolina 303(d) List (online). Available: https://files.nc.gov/ncdeq/Water%20Quality/Planning/TM DL/303d/2020/NC_2020_Category5_303dlist.pdf (March 24, 2022). North Carolina Division of Water Resources (NCDWR). 2013. River Basin Classification Schedule: Cape Fear (online). Available: https://files.nc.gov/ncdeq/Water%20Quality/Planning/CSU/Surface%2OWater/River%2OBasin%2OWater%2OQualit y%20Classifications%20as%20of%20Dec%209%202013/CapeFear_Hydro_order.pdf (April 13, 2022). North Carolina Ecosystem Enhancement Program (NCEEP). 2009. Cape Fear River Basin Restoration Priorities (online). Available: https://files.nc.gov/ncdeq/Water%20Quality/Planning/BPU/BPU/Cape_Fear/Cape%20Fear%20PIans/2006%20PIan /CPF%202005.pdf (April 13, 2022). North Carolina Stream Functional Assessment Team. (NC SFAT 2015). N.C. Stream Assessment Method (NC SAM) User Manual. Version 2.1. North Carolina Wetland Functional Assessment Team (NC WFAT) 2010. N.C. Wetland Assessment Method (NC WAM) User Manual. Version 4.1. Rosgen, D. 1996. Applied River Morphology. Wildland Hydrology (Publisher). Pagosa Springs, Colorado Rosgen, D. 2009. A Practical Method of Computing Streambank Erosion Rate (online). Available: http://www.u-s- c.org/html/documents/Erosion rates.pdf. Rosgen, D. 2011. Estimating Sediment Loads using the Bank Assessment of Non -point source Consequences of Sediment (BANCS). Watershed Assessment of River Stability and Sediment Supply (WARSSS). Hagerstown, Maryland. Schafale, M.P. 2012. Guide to the Natural Communities of North Carolina: Fourth Approximation. North Carolina Natural Heritage Program, Division of Parks and Recreation, North Carolina Department of Environment, Health, and Natural Resources. Raleigh, North Carolina. Bluebird Mitigation Site Part 6—Technical Approach Technical Proposal (RFP # 16-452048014) Page 18 The Scientific Council on Freshwater and Terrestrial Mollusks (TSCFTM). 1990. A Report on the Conservation Status of North Carolina's Freshwater and Terrestrial Molluscan Fauna. Pp. 50-52. Thompson, R.L. and W.W. Baker. 1971. A survey of red -cockaded woodpeckers nesting habitat requirements (pp. 170-186). In R.L. Thompson ed., The Ecology and Management of the Red -cockaded Woodpecker. Tall Timbers Research Station, Tallahassee, FL. United States Army Corps of Engineers (USACE). 2016. Wilmington District Stream and Wetland Compensatory Mitigation Update. United States Department of Agriculture (USDA). 2022. Web Soil Survey (online). Available: http://websoilsurvey.nres.usda.gov/app/WebSoilSurvey.aspx [March 24, 2022]. Fish and Wildlife Service (FWS). 1985. Red -cockaded Woodpecker Recovery Plan. U.S. Department of the Interior, Southeast Region, Atlanta, Georgia. 88 pp. U.S. Fish and Wildlife Service (USFWS). 2003. Threatened and Endangered Species in North Carolina. Chatham County listing. Internet address: http://nc-es.fws.gov/es/countyfr.html. Bluebird Mitigation Site Part 6—Technical Approach Technical Proposal (RFP # 16-452048014) Page 19 APPENDIX A: FIGURES Figure 1. Site Location Figure 2. Hydrologic Unit Map Figure 3A. Existing Topography and Drainage Area Figure 313. Proposed Topography and Drainage Area Figure 4. Existing Conditions Figure 5. Soils Figure 6. LiDAR Figure 7. Proposed Conditions Bluebird Mitigation Site Part 6—Technical Approach Technical Proposal (RFP # 16-452048014) Appendices APPENDIX B: STREAM & WETLAND DATA NCSAM Forms NCWAM Forms NCDWR Forms Cross Sections BEHI & NBS Soil Boring Logs Bluebird Mitigation Site Part 6—Technical Approach Technical Proposal (RFP # 16-452048014) Appendices APPENDIX C: FORMS & REPORTS NHP Report IPac data RCW SLOPES Bluebird Mitigation Site Part 6—Technical Approach Technical Proposal (RFP # 16-452048014) Appendices APPENDIX D: LANDOWNER INFORMATION Landowner Authorization (LOA) Memorandum of Option Agreement (MOA) Bluebird Mitigation Site Part 6—Technical Approach Technical Proposal (RFP # 16-452048014) Appendices APPENDIX E: COMPLETED AND SIGNED RFP ATTACHMENTS & TECHNICAL SCORESHEET RFP Attachment D: HUB Supplemental Vendor Information RFP Attachment E: Supplemental Vendor Information RFP Attachment F: Location of Workers Utilized by Vendor RFP Attachment G: Certification of Financial Condition Completed Technical Proposal Scoresheet Bluebird Mitigation Site Part 6—Technical Approach Technical Proposal (RFP # 16-452048014) Appendices