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HomeMy WebLinkAbout20181416 Ver 1_R-2530B B-4974 R-2527 Permit Application Cover Letter_10/16/2018 5:55 PMSTATE OF NORTH CAROLINA DEPARTMENT OF TRANSPORTATION ROY COOPER GOVERNOR October 16, 2018 U.S. Army Corps of Engineers Regulatory Field Office 3331 Heritage Trail Drive, Suite 105 Wake Forest, NC 27587 ATTN: Mr. Andrew Williams NCDOT Coordinator JAMES H. TROGDON, III SECRETARY Subject: Application for Section 404 Regional General Permit No. 198200031 and 401 Water Quality Certification for the proposed Widening of NC 24/27 from NC 740 in Albemarle in Stanly County to the Troy Bypass in Montgomery County, Federal Aid Project No. STBG-0024(083), Divisions 10 & 8, TIP Nos. R-2530B, B-4974 & R-2527. Debit $570 from WBS 34446.1.5. Dear Sir: The North Carolina Department of Transportation (NCDOT) proposes to widen NC 24/27 from NC 740 in Albemarle located in Stanly County to the Proposed Troy Bypass, west of Troy in Montgomery County. The project was combined from three separate projects; R-2530B, B-4974 and R-2527; under one NEPA document in 2006 due to logical termini. R-2530B involves widening existing NC 24-27 from west of NC 740 to the Pee Dee River from a two to three-lane facility to a four-lane divided facility and will also involve a superstreet design in the areas where curb and gutter is proposed. B-4974 involves rehabilitating existing Bridge No. 51 over the Pee Dee River on the Stanly / Montgomery County line. R- 2527 involves widening existing NC 24-27 from a two-lane facility to a four-lane divided facility from east of the Pee Dee River to the Troy Bypass. The total project is approximately 14.6 miles in length. Please see the enclosed PCN, Division of Mitigation Services (DMS) mitigation acceptance letters, permit drawing review minutes (4B and 4C), Draft MOA, State Stormwater Management Plan (SMP), utility drawings, permit drawings, and design plans for the above referenced project. Purpose and Need The purpose of these projects is to improve traffic flow and level of service (LOS) on the section of NC 24-27 between NC 740 in Albemarle to the proposed Troy Bypass, west of Troy, and to rehabilitate a bridge across the Pee Dee River that addresses the needs of highway users. Mailing Address: Telephone: (919) 707-6000 Location: NC DEPARTMENT OF TRANSPORTATION FCIX: �919� 212-5%HS 1�2� BIRCH RIDGE DRIVE NATURAL ENVIRONMENT SECTION Customer Service: 1-877-368-4968 RAI.EIGH NC 2%61� 1 S9H MAIL SERVICE CENTER Rni.E[GxNC27699-1598 Website: www.ncdot.gov MERGER INFORMATION In compliance with the NEPA/404 Merger Process, the following Concurrence Points were reached for this project: R-2530B/B-4974: 4B: October 19, 2016 4C: May 16, 2018. PROJECT SCHEDULE R-2530B and B-4974 are currently scheduled to let to construction on March 19, 2019, with a review date of January 2, 2019. B-4974 has Design Build Let of November 20, 2018 with deck rehabilitation to begin shortly thereafter but no ground disturbing activities will commence until after the Construction Let in March 2019. R-2527 is currently slated to Let in February 16, 2021. RESOURCE STATUS Waters within the project area are located in the Yadkin Pee Dee River Basin (HUC 03040104, within Subbasins 03-07-08, 03-07-10, and 03-07-15). There are no Outstanding Resource Waters (ORW) or High Quality Waters (HQW) within the project area. No Water Supply Waters (WS-I or WS-II) waters occur within 1.0 mile of the project area; however, the Pee Dee River and its UTs are designated as WS- N, B; CA (water supply watershed). Wetland and stream determinations within R-2530B, B-4974 and R-2527 were conducted using the field delineation method outlined in the 1987 Corps of Engineers Wetland Delineation Manual and the 2012 Eastern Mountains and Piedmont Supplement. The projects were initially verified between 2006 and 2008. Ronnie Smith from ACOE and David Wainwright of DWR field reverified the wetlands and surface waters in 2012 through 2014. 303(dLpaired Waters: Mountain Creek is currently listed on the North Carolina 2016 Final 303(d) list of impaired waters for having impaired ecologicaUbiological integrity for benthos. The Pee Dee River (Lake Tillery) is currently listed on the 2016 Fina1303(d) list for PCBs in fish tissue. IMPACTS TO WATERS OF THE U.S. Tables 1, 2 and 3 summarize the impacts to jurisdictional water resources for R-2530B/B-4974. Site numbers correspond with the permit (hydraulic) drawings included in this application. The stream and wetland numbers correspond to the NRTR and the FONSI. The pond/open water impacts were not identified as mitigable at the 4B and 4C meetings for R-2530BB-4974. (R-2527 is only preliminary design/impacts). R-2530B, B-4974, R-2527 Permit Application Page 2 of 11 Table 1- R-2530B Wetland Im acts (acres) Permit NRTR Wetland Permanent Site Site NC WAM Classification Size Fill in Wetlands 6 W8 Headwater Forest 1.20 0.19 10 W9 Headwater Forest 0.13 0.0 14 W 10 Headwater Forest 0.36 0.09 15 W 10 Headwater Forest 0.36 0.05 15 W 10 Headwater Forest 0.36 <0.01 19 W 12 Headwater Forest 0.13 -- 21 WA Headwater Forest 0.03 0.02 43 WB Bottomland Hardwood 0.02 0.02 49 WC Headwater Forest 0.03 -- Total Wetland Impacts: 0.38 Total Wetland Impacts Requested from DMS: Table 2- R-2530B A Pond Im acts (acres) Permit Site NRTR Site 11 Pond A 16 Pond B 34 Pond D Total Pond Imnacts: Pond Size 0.20 0.23 0.22 Excavation Mechanized in Wetlands Clearing 0.36 0.12 -- <0.01 -- 0.09 -- 0.02 <0.01 <0.01 -- <0.01 <0.01 -- -- 0.03 0.36 p,27 1.01 Impact Size 0.20 0.23 0.22 0.75 Hand Clearing <0.01 <0.01 Impact Description Roadway fill/Utility excavation Utility Easement Roadway fill/Utility Ease�nent Roadway fill/Utility Easeinent Erosion control basin R/W clearing Roadway fill/Lltiliry Easement Roadway fill/Lateral `V' ditch Erosion control basin Roadway �11 Roadway �11 Roadwav �11 Table 3— R-2530B/B-4974 Stream Im acts (linear feet) Permanent Temporary ACOE DWR Permit Stream Name/ Status/ Bank Site NRTR ID Class Channel Stabili Channel Required Required Permanent Impacts Description Impacts zation Impacts Mitigation Mitigation 1 UT to Mountain Intermittent __ 19 9 -- -- Bank stabilization at the outlet of twin 9' x 5' barrel culverts (19'). Creek / Ditch WS-N UT to Mountain Perennial UT to Mountain Creek will be relocated into an 8'x 7' RCBC tmder 2 Creek/ST-AN 04 WS-N 106 -- 7 106 0 NC 24/27 with the original streambed covered with roadway fill - south side ofNC 24/27 (106'). 2 UT to Mountain Perennial 65 -- 10 65 0 UT to Mountain Creelc will be relocated into a lateral base ditch (65'). Creek/ST-AN 02 WS-IV UT to Mountain Perennial UT to Mountain Creek will be relocated into an 8'x 7' RCBC under 3 Creelc/ST-AN 04 WS-N 38 -- -- 38 0 NC 24/27 with the original streambed covered with roadway fill - north side of NC 24/27 (38'). UT to Mountain Perennial Bank stabilization at various places along UT to Mountaiil Creek at the 3 Creelc/ST-AN 04 WS-N -- 61 39 -- -- outlet of the 8'x 7' RCBC (61'). UT to Mountain Intermittent UT to Mountain Creek will be impacted by embedded outlet protection 4 Creek/ST-AN 08 WS-IV 5 -- 7 5 0 from a base ditch (5'). UT to Mountain Perennial UT to Mountain Creek will be impacted by embedded outlet protection 5 Creelc/ST-AN O1 WS-IV 16 -- 10 16 0 from 15" and 30" stonnwater i es (16'). � UT to Mountain Perennial __ 26 ] 0 -- -- Bank stabilization at the inlet of a 7'x7' RCBC (26'). Creelc / ST-B WS-IV UT to Mountain Perennial UT to Mountain Creek will be impacted by A 7'x7' RCBC that is � Creek / ST-B WS-N 60 -- -- 60 0 longer than the existing culvert to accommodate the road widening 60'). g UT to Mountain Perennial __ 16 10 -- -- Bank stabilization at the outlet of a TxT RCBC (16'). Creek / ST-B WS-IV UT to Mountain Perennial UT to Mountain Creek will be impacted by embedded outlet protection 9 Creek/ ST-HH WS-N 127 -- 10 127 0 (18') and relocation into a 36" RCP under NC 24/27 with the original strea�nbed covered with roadway fill (109'). 11 UT to Mountain Perennial 62 -- -- 62 0 UT to Mountain Creek will be relocated into a 24" RCP with itnpacts Creek / ST-D WS-N from roadway fill (35') and outlet protection from a base ditcli (27'). � 2 UT to Mountain Perennial 147 -- 10 l 47 0 UT to Mountain Creek will be relocated into a 60" RCP witl� impacts Creek / ST-F WS-IV from roadway fill (126') and embedded outlet rotection (21'). R-2530B, B-4974, R-2527 Permit Application Page 4 of 11 Permit Stream Name/ Status/ Perm. Bank Temp. ACOE DWR Site NRTR ID Class Channel Stabili Channel Required Required Permanent Impacts Description Im acts zation Im acts Mitigation Mitigation UT to Mountain Perennial UT to Mountaiil Creek will be relocated into a 60" RCP with impacts � 3 Creek / ST-E WS-IV 23 -- 10 23 0 from roadwa fill to the ori inal streambed (23'). 16 UT to Mountain Intermittent 368 -- 10 368 0 UT to Mountain Creek will be relocated into a lateral base ditch with Creek / ST-I WS-IV the ori inal streainbed covered with roadway fill (368'). UT to Mountain Inter��nittent UT to Mountain Creek will be relocated into two base ditches (100') 17 Creek / ST-I WS_� 1,047 -- 35 1,047 0 and a 42" RCP with the original streambed covered with roadway iill (947'). UT to Mountain Perennial UT to Mountain Creek will be relocated into a 42" RCP with impacts 1 g Creek / ST-GG WS-N 151 -- 34 151 0 from two base ditches (21') and the original streambed covered with roadwa fill (130' . UT to Mountain Perennial UT to Mountain Creek will be relocated into embedded base ditch � 9 Creek / ST-GG WS-N 44 -- 12 44 0 (24') aild a 42" RCP with and the origiilal streambed covered with roadwa fill 20' . UT to Mountain Intermittent UT to Mountain Creek will be relocated into embedded base ditch �� Creek / ST-FF WS-N 131 -- 12 131 0 (15') and a 36" RCP with and the original streambed covered with roadwa fill (l 16' . UT to Mountain Perennial UT to Mountain Creek will be relocated into embedded base ditch 22 Creek / ST-FF WS-N �0 -- 10 70 0 (11') and a 15" RCP with and the original streambed covered with roadway fll (59'). 23 UT to Jacobs Perennial 371 -- 10 371 371 UT to Jacobs Creek will be relocated into a lateral base ditch with the Creelc / ST-M WS-N ori inal streambed covered with roadwa fill 371' . UT to Jacobs Perennial UT to Jacobs Creek will be impacted by a standard base ditch (86') 24 Creek / ST-N WS-IV 96 -- 12 96 0 and a 48" RCP (10'). UT to Jacobs Perennial UT to Jacobs Creek will be impacted by a lateral base ditch (73') and 25 Creek / ST-N WS-N �09 -- 10 209 0 its relocation into a 48" RCP with the original streambed covered with roadwa fill (136'). UT to Jacobs Perennial UT to Jacobs Creek will be impacted by bank stabilization at the outlet �`6 Creelc / ST-M WS-N Z� �� of a lateral base ditch (20'). UT to Jacobs Perennial UT to Jacobs Creek will be impacted by banlc stabilization at the outlet 27 Creelc / ST-M WS-N -- 10 2� -- -- of a standard base ditch (10'). 28 UT to Jacobs Perennial 362 -- 20 362 362 UT to Jacobs Creelc will be relocated into a lateral base ditch with the Creek / ST-M WS-N original streambed covered with roadway fill (362'). R-2530B, B-4974, R-2527 Permit Application Page 5 of 11 Permit Stream Name/ Status/ Perm. Bank Temp. ACOE DWR Site NRTR ID Class Channel Stabili Channel Required Required Permanent Impacts Description Im acts zation Im acts Mitigation Mitigation UT to JacoUs Perennial UT to Jacobs Creek will be relocated into a 66" RCP with the original 29 Creek / ST-CC WS-IV � 6 -- 10 16 0 streambed covered with roadwa fill (16'). UT to Jacobs Perennial UT to Jacobs Creek will be impacted by bank stabilization at the oLitlet 30 Creek / ST-M WS-N -- 10 16 -- -- of a standard base ditch (] 0'). 31 UT to Jacobs Perennial 107 -- 10 107 0 UT to Jacobs Creek will be impacted by a 48" RCP (107'). Creek / ST-Q WS-IV UT to Pee Dee Perennial UT to Pee Dee River will be impacted by a base ditch (66') and its 32 River / ST-R WS-IV 164 -- 10 164 0 relocation into a 36" RCP with the original streambed covered with roadwa fill 98' . Perennial UT to Pee Dee River will be impacted by outlet protection (25') and its 33 UT to Pee Dee WS-IV, 143 -- 13 143 0 relocation into a 36" RCP with the original streambed covered with River / ST-R B; CA roadway fill (118'). Perennial UT to Pee Dee River will be impacted by its relocation into a standard 34 UT to Pee Dee WS-IV, 253 -- 25 253 0 base ditch (75') and a 36" RCP with the ariginal streambed covered River / ST-U B; CA with roadwa fill (178'). UT to Pee Dee Perennial UT to Pee Dee River will be impacted by embedded outlet protection 35 River / ST-V WS-N, 46 -- 10 46 0 (11') and its i-elocation into a 42" RCP with the original streambed B; CA covered with roadwa fill (35'). Perennial UT to Pee Dee UT to Pee Dee River will be impacted by bank stabilization at the 36 �ver / ST-V BSCA' 1� outlet of a 9' x T RCBC (17'). Perennial 36 UT to Pee Dee WS-IV 23 -- -- 23 0 UT to Pee Dee River will be impacted by the installation of a 9' x 7' River / ST-V B; CA RCBC (23'). Perennial UT to Pee Dee UT to Pee Dee River will be impacted by its relocation into a 9' x 7' 37 River / ST-V WS-N, 136 -- -- 136 0 RCBC with the original streambed covered with roadway fill (136'). B; CA Perennial UT to Pee Dee UT to Pee Dee River will be iinpacted by bank stabilization at the inlet 37 River / ST-V BSCA' �� �� of a 9' x 7' RCBC (27'). Perennial The Pee Dee River will be impacted by bank stabilization; sloping 38 Pee Dee River WS-IV, -- 238 18 -- -- abutment armoring on the west banlc under the bridges (238') and a B; CA tein ora worlc brid e(0.02ac). R-2530B, B-4974, R-2527 Permit Application Page 6 of 11 Permit Stream Name/ Status/ Perm. Bank Temp. ACOE DWR Site NRTR ID Class Channel Stabili Channel Required Required Permanent Impacts Description im acts zation Im acts Mitigation Mitigation Perennial The Pee Dee River will be impacted by bank stabilization; sloping 39 Pee Dee River WS-IV, -- 171 20 -- -- abutment armoring on the east bank under the bridges (171') and a B; CA te�n orary causeway (0.02ac). InterTnittent 40 UT to Pee Dee wS-N 99 -- 1 l 99 0 UT to Pee Dee River will be impacted by embedded outlet protection River / SG B. CA' (10') and a 36" RCP (89'). Perennial 41 UT to Pee Dee WS-N 24 -- 12 24 0 UT to Pee Dee River will be impacted by the installation of a 6' x 8' River / SH B. CA' RCBC (24'). Perennial 42 UT to Pee Dee WS-N, 32 -- -- 32 0 UT to Pee Dee River will be impacted by the installation of a 6' x 8' River / SH B; CA RCBC (32'). Perennial 42 UT to Pee Dee WS-N -- 44 '7 __ __ UT to Pee Dee River will be impacted by bank stabilization at the inlet River / SH B; CA of a 6' x 8' RCBC (44'). Intermittent 44 UT to Pee Dee wS-N 7 -- 10 � � UT to Pee Dee River will be iinpacted by embedded outlet protection River / SL-B B. CA' at the outlet of a 24" RCP (7'). 45 UT to Rocky Perennial g6 -- I 1 86 0 UT to Rocicy Creek will be impacted by its relocation into a 72" RCP Creek / SA-1 WS-IV; CA with the ori inal streambed covered with roadwa fill 86' . UT to Rocky Perennial UT to Rocky Creek will be impacted by its relocation into a 72" RCP 46 Creek / SA-1 WS-IV; CA �5 -- -- 75 0 �,ith the ori inal streambed covered with roadwa fill (75'). 46 UT to Rocky Perennial __ 26 _ _ UT to Rocky Creek will be iinpacted by bank stabilization at the inlet Creek / SA-1 WS-IV; CA of a 72" RCP 26' . 47A Rocky Creek / Perennial __ 10 � 6 __ __ Rocky Creek will be impacted by bank stabilization at tl�e outlet of a SA WS-IV; CA filt�ation basii� (10'). 47 Rocky Creek / Perennial �9 -- 10 29 __ Rocky Creek will be iinpacted by a twin barrel I 1'x 9' RCBC (4') and SA WS-IV; CA a flood lain bench at t11e outlet (25'). 48 Rocky Creek/ Perennial 125 -- 33 125 0 Rocky Creelc will be i�npacted by a twin barrel ] 1'x 9' RCBC (94') SA WS-IV; CA and a flood lain bench at the ii�let (31). 50 UT to Mountain Perennial 109 -- 10 109 0 UT to Mountain Creek will be impacted by a twin barrel 9'x 6' RCBC Creek / ST-B WS-N (74') and a flood lain bench at the inlet (35). R-2530B, B-4974, R-2527 Permit Application Page 7 of 11 Permit Stream Name/ Status/ Perm. Bank Temp. ACOE DWR Site NRTR ID Class Channel Stabili Channel Required Required Permanent Impacts Description im acts zation Im acts Mitigation Mitigation UT to Mountain Perennial UT to Motmtain Creek will be impacted by a floodplain bench at the 5� Creelc / ST-B WS-N g � �� g � outlet of a twin barrel9'x 6' RCBC (8'). Total Stream Im acts: 4,980 695 611 4,980 733 Total Permanent Impacts 5,675 Total Stream Impact Requested from DMS: 4,980 R-2530B/B-4974 has 695 LF of permanent impacts from bank stabilization but these impacts don't meet mitigation criteria from either the ACOE or NCDWR and have been subtracted from total pennanent impacts for R-2530B/B-4974: 5,675' — 695' = 4,980'. Utility Impacts Wetlands at Pennit Sites 10, 14, 15, and 21 have mechanized or hand clearing impacts from utility easements — these impacts (<0.05 ac) are included in the impact tables and permit drawings for this project. Wetland W8 at Permit Site 6 will have utility impacts (0.21ac) from open trenches that the City of Albemarle will require for the installation of water and sewer lines to a new lift station. These utility wetland impacts have been included in Table 1 above. Please see utility drawings for a site narrative and impacts (attached to the PCN). Utility impacts for R-2527 will be determined when that section reaclles final design. R-2530B, B-4974, R-2527 Permit Application Page 8 of 11 MITIGATION OPTIONS The NCDOT is committed to incorporating all reasonable and practicable design features to avoid and minimize jurisdictional impacts, and to provide full compensatory mitigation of all remaining, unavoidable jurisdictional impacts. Avoidance measures were taken during the planning and NEPA compliance stages; minimization measures were incorporated as part of the project design. Avoidance and Minimization: NCDOT has avoided impacting many wetlands and streams and reduced impacts to wetlands and streams to the greatest extent practicable. Other specific examples of avoidance and minimization measures include: • Avoiding direct discharges where practicable. Culvert barrels with sills will be back filled with native material or class A rip rap to sill height. Native material will consist of material that is excavated from the stream bed or floodplain at the project site during culvert construction. Native material is subject to approval by the engineer and may be subject to permit conditions. Class A rip rap may be used to supplement the native material. If rip rap is used, native material should be placed on top to fill voids and provide a flat surface for animal passage • For upstream and downstream floodplain bench channel improvements, the floodplain bench will be comprised of Class I rip rap with native material to top of sill elevation and coir fiber matting cover (per comment received at 4B meeting). • Due to the water supply reservoir within project limits, a Critical Area (CA) was identified in the FONSI. The CA is defined as the area within '/z mile from the water supply reservoir normal pool. Within the CA, a 25-year storm is used for erosion control design. Although only a portion of the project falls within the CA, the entire erosion control design was based on the 25-year storm event to further protect the surrounding watershed. The filtration basins will provide water quality treatment for a broad spectrum of water quality parameters of concern. As stormwater is temporarily detained, suspended sediments and some phosphorus are captured through sedimentation. During infiltration and other chemical processes, metals and additional phosphorus are removed. Microbial activity that occurs in the media helps to reduce nitrogen and hydrocarbons. As the surface layer is exposed to sunlight and allowed to dry, pathogens are treated. Median filters with relatively deep media layers can help abate runoff temperatures. • Media filters will additionally provide peak flow attenuation, reducing the peak flow for the protection of downstream conveyances, reducing the chance for degradation and sediment loss. • Coordination of erosion control basins with hazardous spill basins to limit impacts if possible by converting basin EC basin over to permanent spill basin. Site Snecific Avoidance and Minimization Measures: • Use of low flow sills set at stream bed elevation in main barrel of multiple barrel and in single barrel box culverts. Low flow sills were used in both barrels of box culvert at Sta. 38+76 -L- due to lack of cover (only 4' height opening), need for opening area to meet hydraulic guidelines and inability to raise proposed grade significantly due to surrounding developed areas. • Use of high flow sills set at floodplain bench elevation on high flow barrels of multiple barreled box culverts at Sta. 24+95 -Y2- and 381+64 -L-, to help maintain the natural stream width and depth through the main barrel. • NCDOT avoided impacts at Permit Site 41 by shortening the culvert thereby reducing permanent and temporary stream impacts and avoiding the FERC Resource Protection Management line (depicted as Do Not Disturb on permit drawings). � Use of hazardous spill basins in and around critical area of Lake Tillery. Critical area where hazardous spill basins are required begins around Sta. 258+00 -L- and runs to the end of the project. • Modified, linear, base ditch basins with check dams were provided at basin locations 1 (from Sta. 276+50 to 277+75 -L- (RT)), location 2(from Sta. 290+50 to 293+00 -L- (RT)), location 3(from Sta. 307+00 to 308+50 -L- (LT)), and location 4(from Sta. 331+25 to 334+00 -L- (LT)). These modified basins will limit the overall basin footprint, since they are in areas of very steep terrain where traditional basins were not practical. They will provide storage for low flow events or spills, within the ditch parameters, will slow down the spills with the use of check dams and will provide a headwall that can be blocked off in case of a spill. • The basins at stations 364+00 -L- (LT) and 382+50 -L- (RT) are designed as rock lined, detention type basins with weir outfalls approximately 18" elevated above the bottom of the basin. These basins will help to detain any spills, while minimizing maintenance and safety concerns due to the steep terrain and difficulty accessing. Hazardous spill basins were modified to filtration basins at Sta. 352+75 -L- (RT) and Sta. 380+00 -L- (RT) to provide some long-term water quality benefits. The filtration basins are designed and sized to capture and treat the water quality volume that will consist of all the runoff from the new built-upon area for 80 to 90% of the average annual rainfall. This will result in a water quality design storm of 1.5 inch. The filtration basins were used in areas where vegetative conveyance was not possible due to the steep terrain requiring rip rap protection in the proposed swales to protect from high velocities. Please refer to the attached Stormwater Management Plan for additional Avoidance and Minimization measures. R-2530B, B-4974, R-2527 Permit Application Page 10 of 11 Compensation• The final design permanent impacts for R-2530B/B-4974 are 5,675 linear feet of stream and 1.01 acre of wetlands. The preliminary design iinpacts for R-2527 are 8,068 linear feet of stream and 1.01 acre of wetlands. The NCDOT has avoided and mininuzed impacts to jurisdictional resources to the greatest extent practicable as described above. Table 4 suir�marizes the wetland and streair� impacts for each section, and suinmarizes the nutigation requirements for the project. Table 4— R-2530BB-4974 Miti�ation Summ HUC Project Section ACOE Required DWR Required l�ii:a�._..�...�. /111 l�ii_ti.��4_..�. /111 03040104 R-2530B/B-4974 03040104 R-2527* � ':1 •1.: 733 Wetland tigation (ac 1.01 1.04 R-2530B/B-4974 Total Mitigation: � 13,471 � 733 � 2.05 � *Preliminary design impacts, slope stakes plus 25 feet — please see preliminary impact table and permit drawings for R-2527 (attached to the PCN). R-2530B/B-4974 has 695 LF of pernlanent impacts from bank stabilization but these impacts don't meet mitigation criteria from either the ACOE or NCDWR and have been subtracted from total permanent impacts for R-2530B/B-4974: 5,675' — 695' = 4,980'. R-2530BB-4974 has 0.75 acre of permanent impacts to ponds. These impacts were determined to be nonmitigable by the ACOE at the 4C Meeting held May 16, 2018. The permanent stream and wetland impacts will be mitig�ted at a ratio of 2:1 with credits acquired from DMS. REGULATORY APPROVALS Section 404: Application is hereby made for a Regional General Permit Na 198200031 as required for the above-described activities. Section 401: We are hereby requesting a 401 Water Qualiry Certification from the N. C. Division of Water Resources. In coinpliance with Section 143 215.3D(e) of the NCAC, we will provide $570.00 to act as payment for processing the Section 401 permit application previously noted in this application (see Subject line). Thank you for your assistance with this project. If you have any questions or need additional information, please contact Jeff Hemphill at jhemphill@ncdot.gov or (919) 707-6126. A copy of this application and distribution list will also be posted on the NCDOT website at: http: //c oimect. ncdot. gov/resourc es/Enviroiunental/Pages. Sincerely, �z Philip S. Harris III, P.E., C.P.M. Natural Environment Section Head cc: NCDOT Permit Application Standard Distribution List R-2530B, B-4974, R-2527 Permit Application Page 11 of ll