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HomeMy WebLinkAbout20191426 Ver 1_401 Application_20191017Southern 30 Ivan Alien Jr. Boulevard MAI Atlanta GA 30308 404 506 0327 tel sglickauf@southernco. com REcavED/DENROWR OCT 17 2019 North Carolina Division of Water Resources V*tor Rezouroes Parrnitting Sect' 401 and Buffer Permitting Branch 1617 Mail Service Center° { Raleigh, NC 27699-1617„� To Whom it May Concern Due to significant and discrete rain events during 2019, Southern Power needs to stabilize the right bank of Second Creek due to severe erosion around Plant Rowans blowdown pipe. This is being accomplished to ensure that the pipe remains stable and usable. We have discussed this project with Mr. Alan Johnson of the Mooresville Regional Office, and he is aware that this application is being submitted. The project will be accessed through Southern Power's existing right-of-way. The proposed plan is to reshape the bank around the pipe and armor the bank to prevent future erosion for approximately 85 linear feet. The total disturbed acreage is less than 1 acre (0.1 acre anticipated disturbance); however the following erosion and sediment control activities are proposed (as shown in the attached plans): The above described maintenance activity will use and an in -stream turbidity curtain to minimize sedimentation during the maintenance activity. All disturbed areas will be grassed, fertilized and mulched until they have stabilized. Specifically, silt fences, a grass seed mix, and straw will be used along the streambank in the adjacent upland area until the disturbed area has stabilized. Attached you will find the Preconstruction Notification (PCN) for 401 Water Quality Certification on the Plant Rowan Blowdown Pipe bank stabilization project. Included with the application are figures, photos and detailed site plans (including erosion and sediment control plans), and a $240.00 permit application fee. Should you need any additional information or have further questions regarding the PCN submittal for 401 Water Quality Certification for this project please do not hesitate to contact me directly. Sincerely, %L�IALD4 Steven Glickauf Sr. Environmental Specialist Office Use Only: Corps action ID no. DWQ project no. Form Version 1.4 January 2009 Pre -Construction Notification (PCN) Form A. Applicant Information 1. Processing 1 a. Type(s) of approval sought from the Corps: ❑ Section 404 Permit ❑ Section 10 Permit 1 b. Specify Nationwide Permit (NWP) number: NWP 3 or General Permit (GP) number: 1c. Has the NWP or GP number been verified by the Corps? 0 Yes ❑ No 1 d. Type(s) of approval sought from the DWQ (check all that apply): ❑X 401 Water Quality Certification — Regular ❑ Non-404 Jurisdictional General Permit ❑ 401 Water Quality Certification — Express ❑ Riparian Buffer Authorization 1 e. Is this notification solely for the record because written approval is not required? For the record only for DWQ 401 Certification: ❑ Yes 0 No For the record only for Corps Permit: ❑ Yes ❑ No 1f. Is payment into a mitigation bank or in -lieu fee program proposed for mitigation of impacts? If so, attach the acceptance letter from mitigation bank or in -lieu fee program. ❑ Yes ® No 1 g. Is the project located in any of NC's twenty coastal counties. If yes, answer 1 h below. ® Yes ❑ No 1 h. Is the project located within a NC DCM Area of Environmental Concern (AEC)? ❑ Yes ❑X No 2. Project Information 2a. Name of project: Plant Rowan Blowdown Pipe Bank Stabilization 2b. County: Rowan 2c. Nearest municipality / town: Salisbury 2d. Subdivision name: 2e. NCDOT only, T.I.P. or state project no: 3. Owner Information 3a. Name(s) on Recorded Deed: Larry L Burns, Lyda D Burns 3b. Deed Book and Page No. 987 / 466 3c. Responsible Party (for LLC if applicable): 3d. Street address: 0 Parks Road (tax address is 2885 Parks Road) 3e. City, state, zip: Salisbury, NC 28147 3f. Telephone no.: 3g. Fax no.: 3h. Email address: Page 1 of 10 PCN Form —Version 1.4 January 2009 4. Applicant Information (if different from owner) 4a. Applicant is: X❑ Agent ❑ Other, specify: 4b. Name: Steven Glickauf 4c. Business name (if applicable): Southern Power 4d. Street address: 30 Ivan Allen Jr. Boulevard NW 4e. City, state, zip: Atlanta, Georgia 30308 4f. Telephone no.: 404-506-0327 4g. Fax no.: 4h. Email address: sglickau@southernco.com 5. Agent/Consultant Information (if applicable) 5a. Name: 5b. Business name (if applicable): 5c. Street address: 5d. City, state, zip: 5e. Telephone no.: 5f. Fax no.: 5g. Email address: Page 2 of 10 B. Project Information and Prior Project History 1. Property Identification 1a. Property identification no. (tax PIN or parcel ID): 826 008 1 b. Site coordinates (in decimal degrees): Latitude: Longitude: 1c. Property size: 44.35 acres 2. Surface Waters 2a. Name of nearest body of water to proposed project: Second Creek 2b. Water Quality Classification of nearest receiving water: Class C 2c. River basin: Yadkin Pee -Dee 3. Project Description 3a. Describe the existing conditions on the site and the general land use in the vicinity of the project at the time of this application: Land is currently in agricultural production. Specifically hay fields. 3b. List the total estimated acreage of all existing wetlands on the property: 0 3c. List the total estimated linear feet of all existing streams (intermittent and perennial) on the property: 1,830 3d. Explain the purpose of the proposed project: The purpose of the proposed project is stabilize the eroded streambank adjacent to Plant Rowans blowdown pipe. 3e. Describe the overall project in detail, including the type of equipment to be used: The plan for the project is to grade the bank and place appropriately sized rip rap to prevent future bank erosion. 4. Jurisdictional Determinations 4a. Have jurisdictional wetland or stream determinations by the Corps or State been requested or obtained for this property / project (includingall prior phases)in the past? ❑ Yes ❑X No ❑ Unknown Comments: 4b. If the Corps made the jurisdictional determination, what type of determination was made? ❑ Preliminary ❑ Final 4c. If yes, who delineated the jurisdictional areas? Name (if known): Agency/Consultant Company: Other: 4d. If yes, list the dates of the Corps jurisdictional determinations or State determinations and attach documentation. 5. Project History 5a. Have permits or certifications been requested or obtained for this project (including all prior phases) in the past? ❑ Yes ❑X No ❑ Unknown 5b. If yes, explain in detail according to "help file" instructions. 6. Future Project Plans 6a. Is this a phased project? ❑ Yes ❑X No 6b. If yes, explain. Page 3 of 10 PCN Form — Version 1.4 January 2009 C. Proposed Impacts Inventory 1. Impacts Summary 1 a. Which sections were completed below for your project (check all that apply): ❑ Wetlands ❑X Streams — tributaries ❑ Buffers ❑ Open Waters ❑ Pond Construction 2. Wetland Impacts If there are wetland impacts proposed on the site, then complete this question for each wetland area impacted. 2a. Wetland impact number Permanent (P) or Temporary T 2b. Type of impact 2c. Type of wetland 2d. Forested 2e. Type of jurisdiction Corps (404,10) or DWQ (401, other) 2f. Area of impact (acres) W1 - Choose one Choose one Yes/No - W2 - Choose one Choose one Yes/No W3 - Choose one Choose one Yes/No W4 - Choose one Choose one Yes/No W5 - Choose one Choose one Yes/No - W6 - Choose one Choose one Yes/No - 2g. Total Wetland Impacts: 2h. Comments: 3. Stream Impacts If there are perennial or intermittent stream impacts (including temporary impacts) proposed on the site, then complete this question for all stream sites impacted. 3a. Stream impact number Permanent (P) or Temporary (T) 3b. Type of impact 3c. Stream name 3d. Perennial (PER) or intermittent (INT)? 3e. Type of jurisdiction 3f. Average stream width (feet) 3g. Impact length (linear feet) S1 P Stabilization Second Creek PER Corps 50 85 S2 Choose one S3 Choose one S4 Choose one S5 - Choose one - - S6 - Choose one 3h. Total stream and tributary impacts 85 3i. Comments: Page 4 of 10 PCN Form — Version 1.4 January 2009 4. Open Water Impacts If there are proposed impacts to lakes, ponds, estuaries, tributaries, sounds, the Atlantic Ocean, or any other open water of the U.S. then indivi ually list all open water impacts below. 4a. Open water impact number Permanent (P) or Temporary T 4b. Name of waterbody (if applicable) 4c. Type of impact 4d. Waterbody type 4e. Area of impact (acres) 01 Choose one Choose 02 - Choose one Choose 03 - Choose one Choose 04 - Choose one Choose 4f. Total open water impacts 4g. Comments: 5. Pond or Lake Construction If pond or lake construction proposed, the complete the chart below. 5a. Pond ID number 5b. Proposed use or purpose of pond 5c. Wetland Impacts (acres) 5d. Stream Impacts (feet) 5e. Upland (acres) Flooded Filled Excavated Flooded Filled Excavated P1 Choose one P2 Choose one 5f. Total: 5g. Comments: 5h. Is a dam high hazard permit required? ❑ Yes ❑ No If yes, permit ID no: 5i. Expected pond surface area (acres): 5j. Size of pond watershed (acres): 5k. Method of construction: 6. Buffer Impacts (for DWQ) If project will impact a protected riparian buffer, then complete the chart below. If yes, then individually list all buffer impacts below. If any impacts require mitigation, then you MUST fill out Section D of this form. 6a. Project is in which protected basin? ❑ Neuse ❑ Tar -Pamlico ❑ Catawba ❑ Randleman ❑ Other: 6b. Buffer Impact number — Permanent (P) or Temporary T 6c. Reason for impact 6d. Stream name 6e. Buffer mitigation required? 6f. Zone 1 impact (square feet) 6g. Zone 2 impact (square feet 131 Yes/No B2 Yes/No B3 Yes/No B4 Yes/No B5 Yes/No B6 Yes/No 6h. Total Buffer Impacts: 6i. Comments: Page 5 of 10 D. Impact Justification and Mitigation 1. Avoidance and Minimization 1a. Specifically describe measures taken to avoid or minimize the proposed impacts in designing project. Due to the nature of the proposed project avoidance of the stream bank is not possible. Minimization measures included reducing the length of rip -rap proposed to be placed on the bank to the area where the blow down pipe is being compromised. 1 b. Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques. 2. Compensatory Mitigation for Impacts to Waters of the U.S. or Waters of the State 2a. Does the project require Compensatory Mitigation for impacts to Waters of the U.S. or Waters of the State? ❑ Yes ❑X No 2b. If yes, mitigation is required by (check all that apply): ❑ DWQ ❑ Corps 2c. If yes, which mitigation option will be used for this project? ❑ Mitigation bank ❑ Payment to in -lieu fee program ❑ Permittee Responsible Mitigation 3. Complete if Using a Mitigation Bank 3a. Name of Mitigation Bank: 3b. Credits Purchased (attach receipt and letter) Type: Choose one Type: Choose one Type: Choose one Quantity: Quantity: Quantity: 3c. Comments: 4. Complete if Making a Payment to In -lieu Fee Program 4a. Approval letter from in -lieu fee program is attached. ❑ Yes 4b. Stream mitigation requested: linear feet 4c. If using stream mitigation, stream temperature: Choose one 4d. Buffer mitigation requested (DWQ only): square feet 4e. Riparian wetland mitigation requested: acres 4f. Non -riparian wetland mitigation requested: acres 4g. Coastal (tidal) wetland mitigation requested: acres 4h. Comments: 5. Complete if Using a Permittee Responsible Mitigation Plan 5a. If using a permittee responsible mitigation plan, provide a description of the proposed mitigation plan. Page 6 of 10 PCN Form — Version 1.4 January 2009 6. Buffer Mitigation (State Regulated Riparian Buffer Rules) — required by DWQ 6a. Will the project result in an impact within a protected riparian buffer that requires buffer mitigation? Yes ❑X No 6b. If yes, then identify the square feet of impact to each zone of the riparian buffer that requires mitigation. Calculate the amount of mitigation required. Zone 6c. Reason for impact 6d. Total impact (square feet) Multiplier 6e. Required mitigation (square feet) Zone 1 3 (2 for Catawba) Zone 2 1.5 6f. Total buffer mitigation required: 6g. If buffer mitigation is required, discuss what type of mitigation is proposed (e.g., payment to private mitigation bank, permittee responsible riparian buffer restoration, payment into an approved in -lieu fee fund). 6h. Comments: Page 7 of 10 E. Stormwater Management and Diffuse Flow Plan (required by DWQ) 1. Diffuse Flow Plan 1a. Does the project include or is it adjacent to protected riparian buffers identified ❑ Yes ❑X No within one of the NC Riparian Buffer Protection Rules? 1 b. If yes, then is a diffuse flow plan included? If no, explain why. ❑ Yes ❑ No 2. Stormwater Management Plan 2a. What is the overall percent imperviousness of this project? 0 2b. Does this project require a Stormwater Management Plan? ❑ Yes 0 No 2c. If this project DOES NOT require a Stormwater Management Plan, explain why: Less than one acre of disturbance. However an erosion and sediment control plan was developed and will be implemented. The erosion control plan includes, but is not limited to, adding silt fence, utilizing a turbidity curtain in the creek to reduce sediment, permanent and temporary seeding and mulch of all disturbed areas. 2d. If this project DOES require a Stormwater Management Plan, then provide a brief, narrative description of the plan: 2e. Who will be responsible for the review of the Stormwater Management Plan? N/A 3. Certified Local Government Stormwater Review 3a. In which localgovernment's jurisdiction is thisproject? Rowan County ❑ Phase II 3b. Which of the following locally -implemented stormwater management programs ❑ NSW ❑ USMP apply (check all that apply): ❑ Water Supply Watershed ❑ Other: 3c. Has the approved Stormwater Management Plan with proof of approval been ❑ Yes ❑ No attached? 4. DWQ Stormwater Program Review ❑Coastal counties ❑HQW 4a. Which of the following state -implemented stormwater management programs apply ❑ORW (check all that apply): ❑Session Law 2006-246 ❑Other: 4b. Has the approved Stormwater Management Plan with proof of approval been ❑ Yes ❑ No attached? 5. DWQ 401 Unit Stormwater Review 5a. Does the Stormwater Management Plan meet the appropriate requirements? ❑ Yes ❑ No 5b. Have all of the 401 Unit submittal requirements been met? ❑ Yes ❑ No Page 8 of 10 PCN Form — Version 1.4 January 2009 F. Supplementary Information 1. Environmental Documentation (DWQ Requirement) 1 a. Does the project involve an expenditure of public (federal/state/local) funds or the ❑ Yes ❑X No use of public (federal/state) land? 1 b. If you answered "yes" to the above, does the project require preparation of an environmental document pursuant to the requirements of the National or State ❑ Yes ❑ No (North Carolina) Environmental Policy Act (NEPA/SEPA)? 1c. If you answered "yes" to the above, has the document review been finalized by the State Clearing House? (If so, attach a copy of the NEPA or SEPA final approval ❑ Yes ❑ No letter.) Comments: 2. Violations (DWQ Requirement) 2a. Is the site in violation of DWQ Wetland Rules (15A NCAC 2H .0500), Isolated Wetland Rules (15A NCAC 2H .1300), DWQ Surface Water or Wetland Standards, El Yes ❑X No or Riparian Buffer Rules (15A NCAC 2B .0200)? 2b. Is this an after -the -fact permit application? El Yes ❑X No 2c. If you answered "yes" to one or both of the above questions, provide an explanation of the violation(s): 3. Cumulative Impacts (DWQ Requirement) 3a. Will this project (based on past and reasonably anticipated future impacts) result in ❑Yes ❑X No additional development, which could impact nearby downstream water quality? 3b. If you answered "yes" to the above, submit a qualitative or quantitative cumulative impact analysis in accordance with the most recent DWQ policy. If you answered "no," provide a short narrative description. 4. Sewage Disposal (DWQ Requirement) 4a. Clearly detail the ultimate treatment methods and disposition (non -discharge or discharge) of wastewater generated from the proposed project, or available capacity of the subject facility. Page 9of10 PCN Form — Version 1.4 January 2009 5. Endangered Species and Designated Critical Habitat (Corps Requirement) 5a. Will this project occur in or near an area with federally protected species or habitat? ❑ Yes ❑X No 5b. Have you checked with the USFWS concerning Endangered Species Act impacts? ❑ Yes ❑X No 5c. If yes, indicate the USFWS Field Office you have contacted. - 5d. What data sources did you use to determine whether your site would impact Endangered Species or Designated Critical Habitat? I PAC 6. Essential Fish Habitat (Corps Requirement) 6a. Will this project occur in or near an area designated as essential fish habitat? ❑ Yes ❑X No 6b. What data sources did you use to determine whether your site would impact Essential Fish Habitat? NOAA EFH Mapper 7. Historic or Prehistoric Cultural Resources (Corps Requirement) 7a. Will this project occur in or near an area that the state, federal or tribal governments have designated as having historic or cultural preservation status (e.g., National Historic Trust designation or properties significant in North Carolina history and archaeology)? ❑ Yes ❑ No 7b. What data sources did you use to determine whether your site would impact historic or archeological resources? 8. Flood Zone Designation (Corps Requirement) 8a. Will this project occur in a FEMA-designated 100-year floodplain? -T ❑ Yes ❑ No 8b. If yes, explain how project meets FEMA requirements: 8c. What source(s) did you use to make the floodplain determination? Steven Glickauf Applicant/Agent's Printed Name 10/10/2019 Date Applicant/Agent's Signature (Agent's signature is valid only if an authorization letter from the applicant isprovided.) Page 10 of 10 - — — NMI Figure 1Legend Plant Rowan Blowdown Pipe Location Site Location Map / -- NAll - I , El k y y Plant Rowan Blowdown Pipe Location ,'i 77 , i .; #Jk� I 'J Ibex LAKE' --" -, Google Earth -_ �N © 2018 Googie Figure 2 iPP o --°` , ,_.� _ - 1 Legend _ '` '� USGS Quadrangle Map ' — �.�� ' 1' Plant Rowan Blowdown Pipe Location .r -' A r(II .F p ,' t`� �. ., ,� 77 �' JX '"•tom � ������ gg � � �� iW s 6 4 f a 1 , , . - q h t r . a _ Y ,t r 1€i v � i 1 JNI Y' 728 , % I)1 M .f .i ;,t{ ,�q;t` �ar°`��„,'" w a �'` i �, 'h,• �+..,. ....tee...+ �e X , Ilk, 9, �' a ..�� a°�' s' t b � r.� �• ^Ty''�,y'a� \�j � ,�, . r r 1 Google Earth C) 2018 Google Plant Rowan Blowdown Pipe Location 200 ft N Photo 1. Blowdown Pipe, September 17, 2019 'ttr�, Photo 2. Eroded Bank, September 17, 2019 8 1 7 1 6 3 1 2 1 1 H It DRAWING INDEX: 'IT" TITLE PAGE E1 C7055 EXISTING SITE CONDITIONS I ECI056 GRADING PLAN EC1057 SECTIONS AND DETAILS F E1C1058 EROSION CONTROL PIA, E1 C1059 EROSION CONTROL SECTIONS AND DETAILS -I �1 � B E D C B A �f NAD83 NORTH CARONNA STATE PLANE GRID ROWANSOUTHERN POWER COMPANY PLANT SEPTEMSTREAM BANK REPAIR PROJECTS KEY PLAN UPS RENSION I — I R-10N LOCATION MAP NOT TO SCALE H NOTES: GENERAL CONSTRUCTION NOTES I. ALL GRACE ELEVATIONS SHOWN ON DRAWINGS ARE HNISH GRADE. 2 EXISTING ACCESS AND PLANT ROADS SHALL BE MAINTAINED AND REPAIRED IF NECESSARY DURING CONSTRUCTION BY THE CONTRACTOR AT HIS EXPENSE TO THE SATISFACTION OF THE F PURCHASER'S REPRESENTATIVE. 3. THE CONTRACTOR 15 RESPONSIBLE FOR IMPLEMENTING HIS OWN STANDARD QUALITY CONTROL AND QUALITY ASSURANCE PROGRAM OR PRACTICES AND SHALL INSTITUTE ANY A➢DITIONAL CONTROLS OR PROCEDURES IN ACCORDANCE WITH PROVEN INDUSTRY PRACTICE TO ASSUME COMPLIANCE WITH THESE DRAWINGS. 4- THE CONTRACTOR SHALL BE RESPONSIBLE FOR PLANNING AND OPERATING ANY CEWATERING, SURFACE WATER RUNOFF CONTROL, PROVISIONS FOR DRAINAGE FOR EXCAVATIONS. AND FOR THE PLACEMENT OF MATERIALS. CONTRACTOR TO COORDINATE W111 PURCHASER'S REPRESENTATIVE PRIOR TO DISCHARGING ANY WATER. SUCH DEWATERING WORK SHALL BE AT NO ADDITIONAL EXPENSE TO THE PURCHASER. PERMIT MAY BE NEEDED PRIOR TO DISCHARGING EE ANY GROUNDWATER. 5. COORDINATE SYSTEM USED 15 NA083 NORTH CARDONA STATE PLANE GRID SYSTEM. CONTRACTOR SHALL COORDINATE AND VERIFY CONTROL MONUMENT LOCATIONS AND ELEVATIONS WRH PURCHASER'S REPRESENTATIVE PRIOR TO COMMENCING ANY SURVEY WORK. 6 CONTRACTOR TO USE CAUTION WHEN WORKING UNDER OR NEAR TRANSMISSION LINES. REQUIRED CLEARANCES FROM EQUIPMENT AND PERSONNEL PERFORMING WORK NEAR HIGH VOLTAGE POWER LINES ARE SPECIFIED IN OSHA 1910,333. ], CONTRACTOR IS RESPONSIBLE FOR REMOVING FIRST 12 OF ORGANIC MATERIAL FROM THE SURFACE. EXISTING GRAVEL MAY REMAIN. EROSION AND SEDIMENT CONTROL NOTES: p I. PRIOR TO CONSTRUCTION, ANY NECESSARY EROSION AND SEDIMENT CONTROL MEASURES SHALL BE CONSTRUCTED AND PUT INTO PLACE, BOB MR ESC MEASURES TO SCS ENGINEERING FOR REVIEW PRIOR TO CONSTRUCTION. C B Southern Company Generation Engineering and Construction Services N �wTc~ •� FOR RN51O 0 09rz6119 Southern Power Company ISSUED FOR CONSTRUCTION PLANT ROWAN A STREAMBANK REPAIR SITEWORK TITLE PAGE PROD ID'. ROW19005 STREAMBANK REPAIR �xJPH .xxx oS- BHC ana xxxp�,xxx NONc E1C1054 , FINAL o U U L 8 f H H STALE PLANE GRID LIMITS OF DISTURBANCE El 7zD7sss2 - /f - LEGEND: 152fi761.02� "♦ * � E„J- — EXISTING MAJOR CONTOURS .♦'• ♦♦ -- - ' EXISTING MINOR CONTOURS ,•♦♦ ♦♦ 50 — - MAJOR CONTOURS N 720750 ,.. _` •• ♦♦♦.. ... ,-.' .. N 720750 .. MINOR CONTOURS ,� ♦ UMITS OF RIP -RAP G ♦♦ N 720739, 52 /' RIP -RAP ^�• ♦ E 1526766.44 I� r LIMITS 1131 RIP -RAP $ " N 152671 E 1526744.34 � REPLACE EXISTING BARBED WIRE ♦♦% y - r. ,^- 0'/ '' j F FENCE IN KIND AS NECESSARY ICJ f♦ �:/ 3'C": r / ,/ LIMNS OF DISTURBANCE. 7 N720723,31 1526783,3 ♦� g� // °� � // E 15267B3.31 �'I♦�IIMDS OF RIP RAP �• E 1526716.77 LIMITS OF DISTURBANCE• LIMITS OF RIP -RAP N 721111,11 ♦♦ fTM r '� J r� ,ey fir' N 720720.76 E 1526690.9fi..♦1 E 1526779.00 GRADING NOTES: I. ALL EXISTING UTILITIES SHOWN ON THESE DRAWINGS ARE APPROXIMATE AND ♦♦ / \ /� SHALL BE FIELD VERIFIED PRIOR TO CONSTRUCTION. ANY DISCREPANCIES E ♦ % / _ / ,'' r SHALL BE REPORTED TO THE PURCHASER E ♦♦:MNSN �2R69 RPP "i�� - ��-�`r/ /;r'J*fir N 720700 3 DTO BE REMOVED' ISPOSED OF A IMPROVEMENTS SHALL REMAIN UNLESS SPEC IFICALLY NOTED, N 720700 ♦♦♦E 152670556 M /v//f � f/ �„�h /4 Pp1R 4N� OAND CONSTRUCTION DEBRIS SHALLAN TRANSPORTED AND LEAST WEEKLY IN AN APPROVED MANNER. f� 4. CONTRACTOR SHALL BE RESPONSIBLE FOR ALL COSTS ASSOCIATED WITH ♦ ,/� '° /� / REPLACEMENT OF ANY ENVIRONMENTALLY SENSITIVE AREAS ♦: / �✓ J �'„� �/ ///r. DAMAGED BY CONSTRUCTION OPERATIONS. 5. CONTRACTOR SHALL CONDUCT NO GRADING OPERATIONS OFF SNE, WITHIN ROAD OR HIGHWAY RIGHT OF WAYS OR ENVIRONMENTALLY SENSITIVE AREAS LIMITS OF DISTURBANCE ♦ .-' +�'.^'�-� Y _ /�,% WfTHOUT PROPER APPROVALS. CONTRACTOR SHALL CONSULT WITH N "I'll" PURCHASER PRIOR TO BEGINNING CONSTRUCTION OPERATIONS REGARDING E 1526fi99.22 ♦♦ 1:- / /,/ - EXACT LIMNS OF ANY AND ALL GRADING OPERATIONS. ♦ / - fJ r �✓ tiW 6. ALL GRADING ADJACENT TO EXISTING OR PROPOSED BUILDINGS SHALL BE ♦ / % / SLOPED AWAY FROM THE STRUCTURES AT A MINIMUM OF 1.0% GRADE. THE ♦ / T N AP ROXIMATE LOCATION OF EXISTING CONTRACTOR SHALL ASSURE POSITIVE DRAINAGE AWAY FROM THE ♦ „i -COOLING TOWER BLOWDOWN PIPE. ♦ CONTRACTOR SHALL LOCATE AND PROTECT _ STRUCTURES NOTIFY THE PURCHASER OF ANY DISCREPANCIES. ♦ ! 7. PROPOSED GRADES INDICATED ON THIS PLAN ARE i0 FINISH GRADE THE ♦ { IN PLACE DURING CONSTRUCTION. CONTRACTOR SHALL MAKE SUBGRADE ADJUSTMENTS FOR TOPSOIL RIP RAP, ♦♦♦ / ETC APPROXIMATE LOCATION OF - ♦' 8. ALL GRADE ELEVATIONS SHOWN ON DRAWINGS ARE FINISH GRADE. EXISTING 4 STRAND BARBED WIRE FENCE - ♦ ' 05S 9. THE CONTRACTOR SHALL BE RESPONSIBLE FOR PLANNING AND OPERATING ♦+ " LIMITS OF DISTURBANCE ANY DEWATERING, SURFACE WATER RUNOFF CONTROL, PROVISIONS FOR N 720685.11 DRAINAGE FOR EXCAVATIONS, AND FOR THE PLACEMENT OF MATERIALS. 'A_ CO TO ♦' E 1526725.11 COORDINATE WITH PURCHASER'S REPRESENTATIVE PRIOR TO ♦ C�� DISCHARGING ANY WATER. SUCH DEWATERING WORK SHALL BE AT NO 2,3'�; ♦♦ �� ADDITIONAL EXPENSE TO THE PURCHASER. PERMIT MAY BE NEEDED PRIOR TO DISCHARGING ANY GROUNDWATER. LIMITS OF RIP -RAP cOF�'O 10. EXISTING ACCESS AND PLANT ROADS SHALL BE MAINTAINED AND REPAIRED i N 720680.11 IF NECESSARY DURING CONSTRUCTION BY THE CONTRACTOR AT HIS E I526720-05 EXPENSE TO THE SATISFACTION OF THE PURCHASER'S REPRESENTATIVE. a LIMITS OF DISTURBANCE .1" N 72067655 /r/ / E 152fi776.55 NOTES: t. FOR DRAWINGS INDEX AND GENERAL NOTES SEE E1C1054. 2- SEE DRAWING E1CC57, FOR DETAILS. N 720650 N 720650 E 'OUANTDIES DO NOT INCLUDE CONSTRUCTION - B ACCESS TO SITE, GRAPHIC SCALE e a z.s s ID Southern Company General on ow FEET) Engineering and Cons n = 5 ee_ tmctlon Services EVI510N DATE REVISION DATE REVISION NATE REVISION GATE REVISION - Rfvls - a�v ". - REVISIONtlM 0 * DATE=�w 10imis oAw FOR A IssuFD FOR CONSTRUCTION Southern Power Company PLANT ROWAN A STREAMBANK REPAIR SITEWCRK GRADING PLAN PROJ ID: ROW19005 STREAMBANK REPAIR HHC JA4IJPH cJWMp XXX �/%%%p uX%X tl5S5p E1C1O56 �1 FINAL 0 Itlu NMNORTH CROUNA STATE G SLATE PLAN GRID N 720750 / pp ♦ �' / N 720750 / / �p ♦ J///./' / i ' /�� /:pp ♦. / i� / � ,� SEDIMENT FENCE / i p ♦ ' SEE DETAIL SHEET EIC1059. 11 LIMITS OF DISTURBANCE SEE DRAWING EIC1056 GRADING PLAN FOR } COORDINATES. / LEGEND: pppp s''{ _ - / ♦���_ .■■■■. UNITS of DISTURBANCE (LOD) F J ♦'^ 1, - ♦♦. ' .-- --.- SEDIMENT FENCE I pp .^' ,� ♦ FLOATING TURBIDITY CURTAIN MINOR CONTOUR �' �� � .� �,✓,;'�#p sD .-- MAJOR caNrauR f EXISTING MINOR CONTOURS 6`1) - — EXISTING MAJOR CONTOURS � •p `r '` RIP -RAP ppp /t" 0��� pppp s / NOTES: N 720700 ♦ -- - t /� / ♦♦ E , a �p,►N 720700 1 TOTAL DISTURBED AREA = FO 1 ACRES ♦;�" G ,P ,,-/ - 1♦ FLOATING TURBIDITY CURTAIN 2. WETLANDS IMPACTED = 0.00 ACRES SEE DETAIL sHEEr EICI069 STREAMBANK IMPACTED - ±85' SHLL INSTALL PERIMETER BMP'S �♦ _ �, /" - ;,�i / *y1' _ - 3 PRIOR TOTOANY OTHER WORK SHOWN IN PLANS. �♦ t�/"';i Y ,'` 4. CONTRACTOR SHALL MAINTAIN ALL DMP S UNTIL ♦ `/ ,F rr p� FINAL STABILIZATION OF SITE. 5. FOR DETAILS AND GRASSING NOTES SEE DRAWING SEDIMENT FENCE - '_ ♦ < _ " . f �.'' E1C1059 EROSION AND SEDIMENTATION CONTROL SEE DETAIL SHEET EIC1059 - ♦ - ,.' ,/Ij / / DETAIL. 6, FOR LIMITS OF DISTURBANCE COORDINATES SEE .r ��♦�� /-:� - DRAWING EIC1056 GRADING PLANK 7. ALL NO CONTROL MEASURES SHALL BE �♦ / - / INSTALLED AND MAINTAINED IN ACCORDANCE WITH E DM F DISTURBANCE - }� _ / PLANNING y♦ AND DESIGN MANUAL,CURRENT EDITION - _ NCDED EROSION AND SEDIMENT i ft ft Rem ffm w, / N 720650 = _ / / / N 720650 i ' J / GRAPHIC SCALE s o zs s >.o za I W FEET i Southern Company Generation I m.h = s n. Engineering and Construction Services FOR REVISION DATE REVISION DATE REVISION DATE REVISION DATE PATE REVISION DATE REVISION 0mwe s DATE 10108/19 A Southern Power Company ISSUED FOR CONSTRUCTION PLANT ROWAN STREAMBANK REPAIR SITEWORK EROSION AND SEDIMENTATION CONTROL PLAN PR010'. ROW19005 STREAMBANK REPAIR �b BHC JPAIJPH JWM I Xm IIxxx xXx I 5ss = E1C1058 �I� I FINAL 1 0 H G F E L) 6 DEFINITION A FLOATING OR STAKED BARRIER INSTALLED WITHIN THE WATER. PURPOSE INSTALLED TO MINIMIZE TURBIDITY AND SILT MIGRATION FROM WORK OCCURRING WITHIN THE WATER OR AS A SUPPLEMENT TO PERIMETER CONTROL BMPS AT THE WATER'5 EDGE. NOTES I. SILT CURTAINS SHOULD BE ORIENTED PARALLEL TO THE DIRECTION OF FLOW. 2. FOR SITES NOT SUBJECT TO HEAVY WAVE ACTION, THE CURTAIN HEIGHT SHALL PROVIDE SUFFICIENT ' SLACK TO ALLOW THE TOP OF THE CURTAIN TO RISE TO THE MAXIMUM EXPECTED HIGH-WATER LEVEL (INCLUDING WAVES) WHILE THE BOTTOM MAINTAINS CONTINUOUS CONTACT WITH THE BOTTOM OF THE WATER BODY. THE BOTTOM EDGE OF THE CURTAIN SHALL HAVE A WEIGHT SYSTEM CAPABLE OF HOLDING THE BOTTOM OF THE CURTAIN DOWN AND CONFORMING TO THE BOTTOM OF THE WATER BODY, SO AS TO PROHIBIT ESCAPE OF TURBID WATER UNDER THE CURTAIN. 3. THE SILT CURTAIN SHALL BE LOCATED BEYOND THE LATERAL LIMITS OF THE CONSTRUCTION SITE AND FIRMLY ANCHORED INTO PUCE (THE ALIGNMENT SHOULD BE SET AS CLOSE TO THE WORK AREA AS POSSIBLE BUT NO SO CLOSE AS TO BE DISRUPTED BY CONSTRUCTION EQUIPMENT). 4, DANGER BUOYS SHALL BE USED AS DIRECTED BY THE COAST GUARD OR PAR PERMIT WHEN WORKING IN NAVIGABLE WATERS. 5. THE ENOS OF THE SILT CURTAIN SHALL BE SECURELY ANCHORED AND KEYED IN ORDER TO ENCLOSE AREA. 6. A GENERAL RULE OF THUMB FOR ATTACHING ANCHORS IS TO DO SO AT 100' INTERVALS (DEPENDING ON CURRENT AND TIDAL CONDITIONS, IT MAY HE NECESSARY TO ANCHOR THE BARRIER ON BOTH SIDES -AS SHOWN). GRASSING - PERMANENT I. ALL DISTURBED AND/OR EXPOSED AREAS THAT WILL REMAIN EXPOSED FOR MORE THAN THIRTEEN DAYS SHALL BE SEEDED, MULCHED AND FERTILIZED UPON REACHING FINAL GRADES. 2. AREAS OF STRUCTURAL FILL SHALL BE GRASSED UPON REACHING FINAL GRADES AT NO ADDITIONAL COST TO THE PURCHASER. 3. TOPSOIL SHALL BE PLACED TO A FINAL COVER THICKNESS OF 4 INCHES TO 6 INCHES ON AREAS THAT RECEIVING GRASSING. C THE IN SCHEDULE INDICATES THE RECOMMENDED SPECIES, PLANTING DATES, AND SEEDING RATES. THE AREAS SHALL BE SEEDED ACCORDING TO THE BEST MIX FOR PLANT ROWAN VICINITY DURING THE TIME OF YEAR SEEDING APPLICATION SHALL OCCUR. ROWAN COUNTY IS LOCATED WITHIN THE WEST GEOGRAPHICAL AREA OF THE STATE. REFERENCE THE NCDEO EROSION AND SEDIMENT CONTROL PLANNING AND DESIGN MANUAL, CURRENT EDITION FOR FURTHER INFORMATION. UNLESS OTHERWISE SPECIFIED THE CONTRACTOR SHALL SUBMIT A PROPOSED MIX TO THE PROJECT CONSTRUCTION MANAGER FOR APPROVAL BEFORE GRASSING OPERATIONS BEGIN. THE FOLLOWING VEGETATION SCHEDULE IS RECOMMENDED FOR PLANT ROWAN: VARIETY SEEDING RATE (LBS/ACI SEEDING DATES COMMON BERMUDA GRASS 25 APRIL 15 - JUNE 30 FESCUE, KY 31 TALL TOO SEPT. 1 TO APRIL 15 SERICEA LESPEDEZA 15 APRIL 15 - JUNE 30 IN THE ABSENCE OF SOIL TEST DATA, THE FOLLOWING RRTLIZATION RATES SHALL BE USED: VEGETATION N-P-K FERTILIZER RATES PER ACRE GRA55 ALONE B-24-24 400 THIS GRASS LEGUME MIXTURE 8-24-24 400 LBS LEGUME ALONE 0-20-20 500 LBS 5. AFTER SEEDING, AN EROSION CONTROL BIODEGRADABLE STRAW BLANKET SHALL BE INSTALLED ON THE EXTERIOR (2.5:1) SLOPES OF THE DIKES. THIS MATERIAL SHALL BE A SIGNET S150BN DOUBLE NET STRAW BLANKET BY NORTH AMERICAN GREEN, OR APPROVED EQUAL, 6. THE BLANKET SHALL BE INSTALLED PER MANUFACTURER'S INSTALLATION INSTRUCTIONS. HOWEVER, THE BLANKET SHALL BE TACKED TO THE GROUND AS NECESSARY TO WITHSTAND THE UPWARD GROWTH OF GRASS AND TO PERMIT THE ESTABUSHMENT OF GRASS THROUGH THE BLANKET. FAILURE TO ACCOMPLISH THIS WILL REQUIRE THAT THE AFFECTED AREA BE RE -GRASSED AND REDONE TO THE SATISFACTION OF THE PURCHASER'S REPRESENTATIVE, 7. SLOPES LESS THAN 3:1 SHALL HE MULCHED WITH BAHIA HAY MULCH OR WITH OTHER SUITABLE MATERIAL. 8. WATER REQUIRED TO PROMOTE A SATISFACTORY GROWTH SHALL BE FURNISHED BY THE PURCHASER AND APPLIED BY THE CONTRACTOR. FLOATING TURBIDITY CURTAIN rn:nixn=rra�ar¢ur:�un,cyrn::�l�rrrla3 LAND SLOPE (PERCENT) MAXIMUM LENGTH OF SLOPE ABOVE FENCE(FEET) MAXIMUM AREA (FT2) 2 100 10.000 2 TO 5 75 7,500 5 TO 10 50 5,000 10 TO 20' 25 2,500 >20 15 1,500 rv—t Inc ULUYt l] GRLAILR IItAN lU%, A II -Al AREA LENGTH OF 10 FEET BETWEEN THE TOE OF THE SLOPE TO THE FENCE SHOULD BE PROVIDED. POST SIZE FOR SILT FENCE MINIMUM LENGTH TYPE OF POST SIZE OF POST TYPE A 5' STEEL 'T" POST 1 33 lb./R. MIN. CONSTRUCTION • THE CURTAIN SHOULD BE MADE OF A UGHTLY WOVEN NYLON, PLASTIC OR OTHER NON -DETERIORATING MATERIAL. THE MATERIAL SHALL MEET THE FOLLOWING SPECIFICATIONS. PROPERTY VALUE GRAB TENSILE STRENGTH and-370 LEE. (1.65 Kn) "cd-250 LBS. (I.11 IOU MULLEN BURST STRENGTH 480psi (3307 kpa) H TRAPEZOID TEAR STRENGTH 'md-I00 LBS (0.45 Kn) 'cd-60 LBS. (0,27 Kn) APPARENT OPENING SIZE 70 US STANDARD SIEVE (0.210 MM) PERCENT OPEN AREA 4% PERMITTIVITY 0.75 SEC-1 'md - MACHINE DIRECTION 'cd - CROSS MACHINE DIRECTION • A FLOTATION MATERIAL WITH OVER 29 Ib,/ft. (43 kg/m) BUOYANCY SHALL SUPPORT THE CURTAIN MATERIAL. A (55 INCH (7.8 —) GALVANIZED CHAIN SHALL ACT AS BALLAST FOR THE FLOATING CURTAIN, DUAL j INCH (7,8m ) GALVANIZED WIRE ROPES WITH HEAVY VINYL COATING SHALL BE USED AS THE LOAD LINES. MAINTENANC • INSPECT THE CURTAIN, ROTATION AND BALLAST TO ENSURE THE WORK AREA IS SECURELY PARTTIONED FROM THE STREAM FLOW. • REMOVE ACCUMULATED SEDIMENT AND DEBRIS. FOR SEDIMENT FENCE INSTALLATION, MATERIALS, CONSTRUCTION AND SLICING SEE SECTION 6 62 SEDIMENT FENCE OF THE NCOEQ EROSION AND SEDIMENT CONTROL PLANNING AND DESIGN MANUAL, CURRENT EDITION. MAINTENANCE INSPECT SEDIMENT FENCES AT LEAST ONCE A WEEK AND AFTER EACH SIGNIFICANT RAIN EVENT. MAKE REQUIRED REPAIRS IMMEDIATELY SHOULD THE FABRIC OF SEDIMENT FENCE COLLAPSE, TEAR, DECOMPOSE OR BECOME INEFFECTIVE, REPLACE IT PROMPTLY. REMOVE SEDIMENT DEPOSITS WHEN THEY REACH ) THE HEIGHT OF THE FENCE AS INSTALLED TO PROVIDE ADEQUATE STORAGE VOLUME FOR THE NEXT RAIN AND TO REDUCE PRESSURE ON THE FENCE. AFTER THE CONTRIBUTING DRAINAGE AREA HAS BEEN PROPERLY STABILIZED, REMOVE ALL BARRIER MATERIALS AND UNSTABLE SEDIMENT DEPOSITS, BRING THE AREA TO GRADE AND STABIIJZE IT WITH VEGETATION. INSPECTION NOTE: THE SEDIMENT FENCE SHALL BE INSPECTED PERIODICALLY AND PROMPTLY REPAIRED OR REPLACED AS REQUIRED. FILTER FABRIC SHALL BE REPLACED WHENEVER IT HAS DETERIORATED TO SUCH AN EXTENT THAT IT REDUCES THE EFFECTIVENESS OF THE FABRIC. 8' MAX. STANDARD FABRIC WITH WIRE FENCE MAX. EXTRA STRENGTH FABRIC WITHOUT WIRE FENCE STEEL POST 5' STEEL P051 (TYP ) WOVEN WIRE FABRIC h `' ` --1 1" TT GEOTEXTILE FABRIC j Ij � WOVEN WIRE - I j j j { ) l _ FENCE BACKING :... lfi 36" m 'j COMPACTED SOIL - I GROUND LINE - GROUND LINE �T FLOW �.. 8.. MIN. I'I II TRENCHII II 24 MIN' 24" MIN. 4" MIN. lu C 8 MIN. IUI Iu u FRONT VIEW SIDE VIEW N.T.S. N.T.S. SEDIMENT FENCE N.T.S. °•°"°•` ` °^^'"� Southern Company Generation �UVW/19 Engineering and Construction Services FOR DATE REVISION DATE REVISION 0 DATE Southern Power Company ISSUED FORCONSTRUCTION PLANT ROWAN STREAMBANK REPAIR SITEWORK EROSION CONTROL SECTIONS AND DETAIL-1 G F E C C B /i