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HomeMy WebLinkAbout20170764 Ver 1_401 Application_20170621Wetlands and Environmental Planning Group June 14, ZII Mr. David L. Shaeffer U.S. Army Corps of Engineers Asheville Regulatory Field Office 151 Patton Avenue, Room 208 Asheville, NC 28801 Mr. Alan Johnson NCDEQ Division of Water Resources 610 East Center Street, Suite 301 Mooresville, NC 28115 Ms. Karen Higgins NCDEQ Division of Water Resources Wetlands & Storm Water Branch 512 North Salisbury Street Raleigh, NC 27604 Leonard S. Rindner. PLLC. 201 70764 Subiect: Nationwide Permit #12 Request for Riverpointe Wastewater Treatment Plant Effluent Pipe Replacement, in Charlotte, Mecklenburg Countv, North Carolina. AID SAW -2016-00660. Ms. Higgins and Messrs. Shaeffer and Johnson, A pre -construction notification is being submitted to request temporary impacts to 0.18 acre of open water on Lake Wylie to replace a failing sewer line. There is approximately 260 -linear feet of an existing 6" DIP sewer pipe that needs replacement and is located within the lake bed of Lake Wylie. A new parallel trench will be dug to place a new pipe with a hydraulic dredge/cutter. Temporary piping will be laid along the lake bed and travel upstream through an existing culvert to the disposal/de-watering site (see attached photo log) to carry the dredged/slurry material created from excavating a new trench. The old pipe will then be removed and barged from the area once the new pipe is in place/operational This proposed work will likely be done in the wet unless water levels recede. The dredge material will be pumped into dewatering/filter bags at an upland disposal site which will then slowly release the return water through diffuse flow in the adjacent streamside buffer. There will be no trees removed within any of the constructionibuffer areas. The pipe size for the existing road crossing (Autumn Creek Court) is 72 -inches in diameter and is large enough to have a small Charlotte Office: www.wetlands-epg.com Asheville Office: 10612-D Providence Rd. 1070 Tunnel Rd., Bldg. I PMB 550 Suite 10, PMB 283 Charlotte, NC 28277 Asheville, NC 28805 (704)904-2277 (828)708-7059 len.rindner@wetlands-epg.com 1 amanda.jones@wetlands-epg.com WetlandsandEnvironmental Planning Group Leonard S. Rindner, PLLC. suction pipe running through without impeding the capacity of this pipe in the event of high flows. Enclosed is a construction sequence outlining these steps in more detail. Also enclosed is a letter from USFWS indicating that there will be no impacts to any federally threatened/endangered species associated with this projce. We believe that the site plan has been designed to avoid and minimize impacts to aquatic resources on the site while still being able to safely replace the damaged section of lin. We appreciate the opportunity to submit this information and please contact me if you have any questions, (828) 708-7059 or email at amanda.; o� nes(a�wetlands-epi com. Sincerely, Amanda Jones Regulatory Specialist Charlotte Office: vvww.wetlands-epg.com Asheville Office: 10612-D Providence Rd. 1070 Tunnel Rd., Bldg. I PMB 550 Suite 10, PMB 283 Charlotte, NC 28277 Asheville, NC 28805 (704)904-2277 (828)708-7059 len.rindner@wetlands-epg.com 2 amanda.jones@wetlands-epg.com o`'o� wArF9vG y r 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: ❑X Section 404 Permit ❑X Section 10 Permit 1 b. Specify Nationwide Permit (NWP) number: 12 or General Permit (GP) number: 1c. Has the NWP or GP number been verified by the Corps? ❑ Yes ❑X No 1d. 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 ❑X No For the record only for Corps Permit: ❑ Yes ❑X 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 ❑X No 1 g. Is the project located in any of NC's twenty coastal counties. If yes, answer 1 h below. ❑ Yes ❑X 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: Riverpointe WWTP Effluent Outfall Modification 2b. County: Mecklenburg 2c. Nearest municipality / town: Charlotte 2d. Subdivision name: 2e. NCDOT only, T.I.P. or state project no: 3. Owner Information 3a. Name(s) on Recorded Deed: Utilities Inc. of NC 3b. Deed Book and Page No. 3c. Responsible Party (for LLC if applicable): Tony Konsul 3d. Street address: 5701 Westpark Drive, Suite 101 3e. City, state, zip: Charlotte, NC 28224 3f. Telephone no.: 704-525-7990 3g. Fax no.: 3h. Email address: TJKonsul@uiwater.com Page 1 of 10 PCN Form — Version 1.4 January 2009 4. Applicant Information (if different from owner) 4a. Applicant is: ❑ Agent ❑ Other, specify: 4b. Name: 4c. Business name (if applicable): 4d. Street address: 4e. City, state, zip: 4f. Telephone no.: 4g. Fax no.: 4h. Email address: 5. Agent/Consultant Information (if applicable) 5a. Name: Heath Caldwell 5b. Business name (if applicable): Leonard S. Rindner, PLLC. 5c. Street address: 10612-D Providence Road, PMB 550 5d. City, state, zip: Charlotte, NC 28277 5e. Telephone no.: 704-999-5279 5f. Fax no.: 5g. Email address: heath.caldwell@wetlands-epg.com Page 2 of 10 B. Project Information and Prior Project History 1. Property Identification 1a. Property identification no. (tax PIN or parcel ID): 119944209,19944111,19944201 1 b. Site coordinates (in decimal degrees): ILatitude: 35.1009 Longitude: -81.0336 1 c. Property size: 3.53 acres 2. Surface Waters 2a. Name of nearest body of water to proposed project: Lake Wylie 2b. Water Quality Classification of nearest receiving water: WS -II 2c. River basin: 03050101 Upper Catawba 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: The site is currently an open water lake with boat slips/docks and a wooded area adjacent to the lake surrounded by residential development known as Riverpointe. 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: 650 3d. Explain the purpose of the proposed project: Project purpose is to replace an existing/failing sewer line located under Lake Wylie. 3e. Describe the overall project in detail, including the type of equipment to be used: Construction/sequencing details attached. An hydraulic dredge/cutter will be used to dig a new trench on the lake bed to place the new line. 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? El Preliminary E] 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 El 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 1a. Which sections were completed below for your project (check all that apply): ❑ Wetlands ❑ Streams — tributaries ❑ Buffers ❑X 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: 0 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 Choose one S2 - Choose one - S3 - Choose one - - S4 - Choose one - - S5 - Choose one - - S6 - Choose one 3h. Total stream and tributary impacts o 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 individually 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 T Lake Wylie Excavation Lake 0.18 02 - Choose one Choose 03 - Choose one Choose 04 - Choose one Choose 4f. Total open water impacts 0.18 4g. Comments: Approximately - inear feet of failing sewer une will replaced Within a JU-Toot easemen area OT open wa er in Lake vvyHe acre). 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. 5e. Stream Impacts (feet) 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 B1 - 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. Proposed impacts to open water are temporary in nature and minor. No impacts to adjacent stream channels will occur. De -watering of dredged material will occur within uplands and discharged into an adequate wooded area/buffer for diffuse flow back into the stream channel upstream of the impact site. There will be no tree removal in the buffer/wooded areas. 1 b. Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques. There will be no impacts to adjacent stream channels associated with construction staging/de-watering, etc. Work will be attempted when water levels are low if possible. If not, the hydraulic dredging will minimize any secondary impacts from sedimentation. 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 Yes ❑X No buffer mitigation? 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. 6c. 6d. 6e. Zone Reason for impact Total impact Multiplier Required mitigation (square feet) (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 ❑x Yes ❑ 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. The project is adjacent to Lake Wylie and located with the Catawa River buffers however no tree removal Yes NO will occur within any regulated buffers. The discharge located for de -watering associated with dredged ❑ ❑X material will be located on an existing developed upland pad (water treatment tanks) and the water will be diffused slowly from dewatering/filtering bags into the adjacent streamside buffer. 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 ❑X No 2c. If this project DOES NOT require a Stormwater Management Plan, explain why: 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? 3. Certified Local Government Stormwater Review 3a. In which localgovernment's jurisdiction is thisproject? ❑ Phase II ❑ NSW 3b. Which of the following locally -implemented stormwater management programs ❑ 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): E] 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)? 1 c. 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, ❑Yes 0 No or Riparian Buffer Rules (15A NCAC 2B .0200)? 2b. Is this an after -the -fact permit application? El Yes Q 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 Q 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. No additional impacts are expected. This is the only section of line that needs repair. 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 9 of 10 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 ❑ Yes ❑X No habitat? 5b. Have you checked with the USFWS concerning Endangered Species Act Yes ❑ No impacts? 5c. If yes, indicate the USFWS Field Office you have contacted. Asheville 5d. What data sources did you use to determine whether your site would impact Endangered Species or Designated Critical Habitat? See attached lettter from USFWS 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? Knowledge/expertise of area. No EFH resources located in this area/region. 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 ❑ Yes ❑X No status (e.g., National Historic Trust designation or properties significant in North Carolina history and archaeology)? 7b. What data sources did you use to determine whether your site would impact historic or archeological resources? http://gis.ncdcr.gov/hpoweb/ 8. Flood Zone Designation (Corps Requirement) 8a. Will this project occur in a FEMA -designated 100 -year floodplain? Q Yes ❑ No 8b. If yes, explain how project meets FEMA requirements: There will be no discharge of fill material that will raise/effect flood levels. Work is temporary in nature and trench will be excavated/backfilled to pre - construction grade. 8c. What source(s) did you use to make the floodplain determination? olaris3g. mecklenburgcountync.gov Jones DIN —:mano�EybA- = Amanda DWEPG,—Leonard S. Amanda Jones for WEPG , Wetlands 8 Enmental Rindner, PLLCWenviro Jones Plannini, = p,email=amantle.joneaQetlentls .Pg gym, c Oatate: 2017.06.14GS1525:45 44'00' 06-14-2017 Applicant/Agent's Printed Name Date Applicant/Agent's Signature (Agent's signature is valid only if an authorization letter from the applicant isprovided.) Page 10 of 10 Wetlands and Environmental Planning Group Agent Authorization Letter Leonard S. Rindner, PLLC. The purpose of this form is to authorize our firm to act on your behalf in matters related to aquatic resource (i.e. stream/wetlands) identification/mapping and regulatory permitting. The undersigned, who are either registered property owners or legally authorized to conduct due diligence activities on the property as identified below, do hereby authorize associates of Leonard S. Rindner, PLLC, Wetlands and Environmental Planning Group (WEPG) to act on my behalf and take all actions necessary for the processing, issuance, and acceptance of applicable permit(s) and/or certification(s). Project/Site Name: Riverpointe WWTP Effluent Outfall Modification Property Address: 16309 Autumn Creek Court, Charlotte, NC 28278 Parcel Identification Number (PIN): 19944201 Select one: I am the current property owner Name: Tony Konsul Company: Utilities Inc. of NC Mailing Address: 5701 Westpark Drive, Suite 101, Charlotte, NC 28224 Telephone Number: Electronic Mail Address: tjkonsul@uiwater.com raty Kay*u l 6/14/2017 Property Owner / Interested Buyer* / Other` Date * The Interested Buyer/Other acknowledges that an agreement andlor formal contract to purchase and/or conduct due diligence activities exists between the current property owner and the signatory of this authorization in cases where the property is not owned by the signatory. Charlotte Office: www.wetlands-epg.com Asheville Office: 10612-D Providence Rd. 1070 Tunnel Rd., Bldg, I PMB 550 Suite 10, PMB 283 Charlotte, NC 28277 Asheville, NC 28805 (704) 904-2277 (828) 708-7059 len.rindner@wetlands-epg.com 2 amanda.lones@wetlands-epg.com N p Fawr,x s "to MBdta°^`ery Rd � P�^E�°s R,dao ,p d 2 sz Chartatte Hwy a HEneysuck/e H'tl x iZ°p (<=7 SpurtMW CA P.++t laA-11 Rd C"nr fi arbor (Ztl { �sWtE Hsrb° b rA p O\ap ,, Dop 1449,_nod- 1 r° g Steel# Crook 5ledao Rd J d Cl) Gia s Qtr U +int. C, dR$ % yCtk# ( Z 4P°nd Dr r1 3 0 Wydt ��Yrnart th s� tt°SSA. <akcP°� O 0 1 o o � +:apFar�Ent ,1 laians Dr aµ ?c O iw L F (l Rd Qn CL ¢ G �• a ; ,.✓ A %"hannaE� Minces Creel, V� R a �o %tpa.Y•O Z ?a Draft Cf n CO ''� Fa41oy� Greynriarp 'd O C s4(13 p hlrPdwwif U w 4/ 3 rtxiu,u m Z @ V scan x 4a U) ;t- C 1e Er( r4 Q 0 Z3 O a Y" Rd fj C a) U C LU D U Rd c i= rn Z Q Gardo^'sido in O! LUQ w O O a r r i ye ✓ExG York Fd W N N c c G � > 3 i 4 C V! (aefr 12re1-6 � �rh l O Q „rd�9 71 Rd h, a) i r (Y `A � APPROXIMATE PROJECT ; AREA 3 3.53 Acres M4+rson N� o, FIGURE 1 z t Legend 4 „E E attic" , 0, 0 1,000 2,000 4,000 QProject Boundary n a Sources: Esri, HERE, DeLorme, USGS, Interma April 17, 2017 METI, Esri China (Hong Kong), Esri (Thailand), Feet m contributors, and the GIS User Community LUM Wetlands and Environmental Planning Group 1 eonard S Rindner. PI 1 C. Al 4 / 4h, ol 41 Pa a .j x i 0u E J J � ol >41 U, NO �i 3 a, c � , J � 1 C Q a .j x i 0u E J J � ol >41 U, NO �i 3 LTDAl Wetlands and Environmental Planning Group I.eoonardS.Rlndner, PLLC. RIVERPOI NTE WASTEWATER TREATMENT PLANT EFFLUENT OUTFALL MODIFICATION OWNER CIVIL ENGINEER SURVEYOR ALLOWAY LANE CHARLOTTE, NC 28075 NPDES # NCO071242 Utilities Inc., of NC SHEET INDEX Permitting 5701 Westparic Dr. Suite 101 Package Charlotte, NC 28224 CI.0 COVER 02/24117 704.525.7990 CIA SEALED SURVEY & NOTES 02/24/17 Martin Scanlon CI.2 EXISTING CONDMONS 0224117 CI.3 EASEMENTS - EXISTING & PROPOSED 0224/17 CLO PROPOSED OUTFALL PLAN & PROFILE 0224/17 LanclDesign, Inc. Q.I DETAILS & SPOILS LOCATION MAP 0224/17 223 North Graham St Charlotte, NC 28202 704.333.0325 Land Design Surveying, Inc. 508 West 5th St Suite 125 Charlotte, NC 28202 704.337.8329 Vicinity Map Scale: r = 1000• I MATERIAL AREA Z CL Z .z 0 U LL_ Q D Lu 0 OC � r J W Q LL Z� Z CL CL E- o ED Z LU > y w 1 rayLL E > w � OU a o 2 "U PROJECT NOTES: 1. ALL WORK COVERED UNDER THESE PLANS SHALL CONFORM IN ALL RESPECTS TO CONDITIONS AND REQUIREMENTS OF THE FERC CONVEYANCE PERMIT ISSUED FOR THIS PROJECT. 2. THE PURPOSE OF THIS PROJECT IS SPECIFICALLY TO ADDRESS AN UNCOVERED 6' DUCTILE IRON PIPE IN A COVE OF LAKE WYLIE WITHIN THE FERC BOUNDARY BY ITS REMOVAL AND REPLACEMENT HATH NEW PIPING. 3. TIME IS OF THE ESSENCE IN THE PERFORMANCE OF THE WORK COVERED BY THESE PLANS AND THE CONTRACTOR SHALL SO ORGANIZE AND EXECUTE HIS PERFORMANCE SO AS TO MINIMIZE THE PERIOD OF DISTURBANCE WITH THE FERC BOUNDARY AND SHALL PROVIDE A DETAILED SCHEDULE TO THE OVMER AND ENGINEER PRIOR TO COMMENCING THE WORK. 4. ALL WORK SHALL BE SUBJECT TO INSPECTION AT ALL TIMES BY THE OWNER, THE ENGINEER, DUKE ENERGY LAKE SERVICES, AND APPROPRIATE REGULATORY AND ENVIRONMENTAL AGENCIES. 5. THE CONTRACTOR SHALL PROVIDE WRITTEN NOTICE TO THE OWNER, THE ENGINEER, AND DUKE LAKE SERVICES A MINIMUM OF 46 HOURS PRIOR TO COMMENCING THE WORK 6, UPON COMPLETION OF THE PROJECT, NO MATERIALS SHALL REMAIN IN THE COVE OTHER THAN THE NEW PIPELINE AND ASSOCIATED MATERIAL FILL FOR THE PIPELINE TRENCH. EXCAVATED SOIL MATERIAL FROM THE PIPELINE TRENCH SHALL BE REMOVED FROM THE SITE, APPROPRIATELY DEWATERED AND DISPOSED OF IN A PREVIOUSLY APPROVED AND PERMITTED MANNER. THE OWNER WILL PROVIDE A SITE FOR DISPOSAL WITHIN THE RIVERPOINTE SUBDIVISION. 7. THE CONTRACTOR IS CAUTIONED AND SHALL USE APPROPRIATE MEASURES TO PROTECT ANY PRIVATE DOCK OR WATERCRAFT IN THE COVE. 8. THE CONTRACTOR IS HEREWITH NOTIFIED THAT NO GUARANTEE IS IMPLIED AS TO THE WATER LEVEL AT THE TIME OF THIS CONSTRUCTION. WATER LEVEL IN LAKE WYLIE IS VARIABLE, AND THE CONTRACTOR SHALL PLAN HIS WORK ACCORDINGLY. 9. CONTRACTOR SHALL PROVIDE SHOP DRAWINGS AND MANUFACTURER'S CUT SHEETS FOR ALL MATERIALS TO BE FURNISHED ON THIS PROJECT. 10. THE CONTRACTOR SHALL PROVIDE ALL MATERIAL, LABOR, EQUIPMENT, AND ALL ELSE REQUIRED TO PERFORM THE WORK. NO MATERIALS OR LABOR WILL BE PROVIDED BY THE OWNER, 11. ONLY WATERTIGHT CONNECTIONS MAY BE USED AT THE TWO LOCATIONS FOR CONNECTING TO THE EXISTING PIPELINES AS SHOWN ON THE PLANS. 1. MOBILIZATION OF WATERBORNE EQUIPMENT SHALL BE COORDINATED WITH DUKE ENERGY LAKE SERVICES FOR THE USE OF PUBLIC ACCESS AREAS. 2, REMOVAL OF ALL EXCAVATED MATERIAL FROM THE PIPE TRENCH AS DEPICTED ON THE PLANS MUST BE PERFORMED USING A HYDRAULIC, CUTTERHEAD SUCTION DREDGE. 3. PRIOR TO COMMENCING THE WORK, THE CONTRACTOR SHALL HAVE ASSEMBLED ALL REQUIRED MATERIALS AND COMPLETED ANY NECESSARY FABRICATION OF SPECIAL FITTINGS, ETC. REQUIRED TO COMPLETE THE WORK. 4. INITIAL WORK UPON MOBILIZATION TO THE SITE WILL INCLUDE LOCATION OF THE EXISTING 6' DIP IN THE AREA AS DEPICTED ON THE PLANS FOLLOWED BY EXCAVATION AT THE CONNECTION POINTS AT EACH END OF THE PIPE REPLACEMENTS. 5. UPON CONFIRMATION OF THE 6' DIP PIPE LOCATION, THE CONTRACTOR WILL PROCEED WITH TRENCH EXCAVATION (SEE TRENCH DETAIL ON PLANS). EXCAVATED MATERIALS MUST BE REMOVED FROM THE PROJECT LIMITS AND NONE OF THE EXCAVATED MATERIALS MAY BE PLACED ON THE LAKE BED. NO DOUBLE HANDUNG OF MATERIALS WILL BE PERMITTED (I.E. EXCAVATED MATERIAL PLACED PARALLEL TO THE TRENCH ON THE LAKE BED INITIALLY, THEN REMOVED IN A SEPARATE OPERATION). 6, PRIOR TO TRENCH EXCAVATION, THE CONTRACTOR SHALL HAVE INSTALLED THE NECESSARY PIPING TO CONVEY DREDGED MATERIAL RAL TO THE OWNER'S DISPOSAL SITE IN THE RIVERPOINTE SUBDIVISION (ABANDONED WELL SITES) AND SHALL HAVE PROVIDED A SUFFICIENT NUMBER AND SIZE OF GEOTEXTILE FILTER BAGS TO RECEIVE AND FILTER THE DREDGE SLURRY. 7. THE CONTRACTOR SHALL HAVE ASSEMBLED MATERIALS AND SHALL HAVE COMPLETED THE LAUNCH OF THE 4' HDPE REPLACEMENT PIPE INCLUDING FUSION OF JOINTS AS REQUIRED, PROVIDED THE LENGTH OF CONTINUOUS PIPE AS SHOWN ON THE PLANS. 8. THE CONTRACTOR SHALL COORDINATE AND SCHEDULE WITH THE OWNER THE PERIOD OF TIME DURING WHICH DISCHARGE OF EFFLUENT TO THE 6' DIP WILL BE INTERRUPTED. 9. UPON COORDINATION WITH THE OWNER AND COMPLETION OF THE TRENCHING EXCAVATION, THE CONTRACTOR WILL PROCEED WITH TIE IN OF THE 4' HDPE TO THE EXISTING 4' PVC JUST UPSTREAM OF THE EXISTING MANHOLE, AND INSTALL THE 4' HDPE PARALLEL TO THE 6' DIP TO THE POINT OF CONNECTION OF THE 4' HDPE TO THE EXISTING 6' DIP, AND COMPLETE THAT CONNECTION. IN CONCERT WITH LAYING OF THE 4- HDPE, THE CONTRACTOR SHALL ADVANCE THE INSTALLATION OF THE NUMBER 57 WASHED STONE BEDDING MATERIAL AS REQUIRED BY THE DETAIL ON THE PLANS. ALL STONE MATERIAL WILL BE DELIVERED TO THE SITE VIA BARGE. AS SHOWN ON THE DETAIL UPON COMPLETION OF THE NUMBER 57 STONE, THE CONTRACTOR SHALL THEN INSTALL 61NCHES OF BALLAST STONE COVER, WITH FINISHED ELEVATION MATCHING THE ORIGINAL GROUND ELEVATION ALONG THE TRENCH. 10. UPON COMPLETION OF THE NEW PIPE AND CONNECTIONS, AND PLACING THE NEW PIPE INTO OPERATION, THE CONTRACTOR SHALL ADVISE THE OWNER THAT DISCHARGE OF EFFLUENT MAY RESUME. 11. THE CONTRACTOR WILL THEN REMOVE EXISTING MANHOLE AND ALL OF THE EXISTING 6' DIP THAT HAS BEEN PARALLELED AND ABANDONED, AND SHALL BE REMOVED, BARGED FROM THE PROJECT AREA AND APPROPRIATELY DISPOSED OF OFFSITE. 12, UPON FULLY COMPLETING THE WORK, THE CONTRACTOR SHALL ADVISE THE OWNER, THE ENGINEER AND DUKE LAKE SERVICES THAT THE PROJECT IS FINISHED. /r ' k K. LDSIExhibit Map for v Carolina Water Se lc Inc of North Camllna County, awmcwYm caroox ogSEAL,. Z g �Z W O 1:6 LL Lu O W LL J O �— t Z e6 U Z O F 0 CL 7 a(— W z � W �— >LLE �w� tY as ,3U I o f�f I. 1 ale '•� vev b� 1 soe 9¢ v] a 1 m i 1 5mm Ro y saw 41 °= B 11161 11-11E x sww � tm e :F 0 1 ILL. — -- r � I I s enn \ IN 9 _ 1 / o I � m 4, tV- 211 �a n 1 N � �esee ee e, v ,1111,1��we, � � •T — — — o x o � o AOTU4N CREEK CT\ { 4AQ a AN s� a ;AN 3° H2 Ho e pa - e: RIVERPOINTE TREATMENT PLANT E EFFLUENT OUTFALL MODIFICATIONUTILITIES INC. OF NC ­, a EXISTING CONDITIONS C I .Z .....�:, i •••�"...,.,... NC Fr¢Frm trams C-0ev m x .0 a m g m=r0 m gg a G0 F1Ao =po po- a n Ai m = P� RUTUNN CREEK Cf\ / " R RIVERPOINTE TREATMENT PLANT EFFLUENT OUTFALL MODIFICATION ana UTILITIES INC. OF INC 99 6.3 EASEMENTS -EXISTING &PROPOSED j �A I A E ,--.-_-- uu'8�M8 6 � 0 I µ I I wc`570 570 -CUE w'rwcv cnsrF ' �D�no�Bi"�u 12 "•••°"" B= - D,DDEBO,DDD�EATA EA—E wT,e MIL N«MOPE _ -I-ATONATTNEBDTTOMOETNE - TDBEaExorE. iEx. aNA.Ea,.-- -- . we J ous'siq'(•r..... E MBEa UaEq DDNDT.TT.DN \\ \\ Ta,,ce.wxET vE. EAG -U. \\\ \\\� �s BM.NMDMTAENDSNwD�PN s EAEMPEBNEOO DEE- ✓ '_, -' BPEET NBTKL.oOr«„LrAA MBAE. a _ 1 __ _\- I.-__ ,,-� rAncm vnaENnwc coNo "oEvrAaTn,£N.ua EMBENOT %MNBE'I EG N uPraNOTExNO-NeMw \cow TNccr,=ss,�roTNENrnwoED wvE E.eEDME T�NO SNou�n AacaMa sNEO _ vEAPOAM caxoucnvrTEsr ON TIE Ta OR wAENTE 1 NBOEcr N TIE N EDl ncr NOT AEiEwsED C foR DasTaucr an xx wiM n _ \i \.IcaMa \\ \\ ^\\ \\\ \\\ 560 580 11MIN EMBEDMENT & BACKFILL FOR HDPE ITS Ex. QAA.E p to >oNo.:DNrw w.iEaDEr,n® p aa 555 555 CL p.',• fi• ding ��$� l �, �- 0 Z oNBO ,.DD x.aD 3N%I DDc.N�EDD.T® MBa;,.;B F- Lu i z w O Ba g D .n I Lu t H J D EAB,NBPEDT DN Nl. �.°,B /-IMIRIMIUII' I D S H UK£ IR'IlE nv Open weler BryMq _ - ,,a gyp O ~ SEEDETAO.,BBoesiO/ IOR ONA_INFORMATION (IBD=ofYro MilNin 30-IDd eeserron, FlOSNN / // ,\ / / E { O LL W Z V DD NNE DED TEo — — — — — PAD- a - El sA , . u our°E DB A x — _ Dx O D BBx r- = J - - �AEMovEo /' \ \ Art m xa - - - \` W CS] ` LL F O :e: � w 5 IL / wDAMEN �N \ OM -��___- __ -= wcFDAEMNN b� \ .�EB \\ IT p EB BED S„° u NoaM.BEND / BENa.DOraK� se \ j NDAQ BEND Br.D.DBp / �_:_� o BEND u SAM. BEND Po"ME \ �� \ \ N- R M NGC,EA ME.ft �y / / `\\ RU MB'�GBm)Bmnc ♦�Y4*�U HDPE TO PVC OR DI TRANSITION cz ars I � f i s vaa.,E avE 11 -1.1TE El ss ar, nvco "POILS DISPOSAL LOCATION MAP "PUN V = w 'pDE91GN's, '.K CAB�e`• VI -B. Construction Sequences 1. Obtain Duke and FERC approvals. 2. Notify homeowners of proposed plans. 3. Notify Catawba Riverkeeper of proposed plans 1. Mobilization of waterborne equipment shall be coordinated with Duke Energy Lake Services for the use of public access areas. 1. Removal of all excavated material from the pipe trench as depicted on the plans must be performed using a hydraulic, cutterhead suction dredge. 2. Prior to commencing the work, the Contractor shall have assembled all required materials and completed any necessary fabrication of special fittings, etc. Required to complete the work. 3. Initial work upon mobilization to the site will include location of the existing 6" DIP in the area as depicted on the plans followed by excavation at the connection points at each end of the pipe replacements. 4. Upon confirmation of the 6" DIP pipe location, the Contractor will proceed with trench excavation (see trench detail on plans). Excavated materials must be removed from the project limits and none of the excavated materials may be placed on the lake bed. No double handling of materials will be permitted (i.e. excavated material placed parallel to the trench on the lake bed initially, then removed in a separate operation). 5. Prior to trench excavation, the Contractor shall have installed the necessary piping to convey dredged material to the Owner's disposal site in the Riverpointe subdivision (abandoned well sites) and shall have provided a sufficient number and size of geotextile filter bags to receive and filter the dredge slurry. 6. The Contractor shall have assembled materials and shall have completed the launch of the 3" HDPE replacement pipe including fusion of joints as required, providing the length of continuous pipe as shown on the plans. 7. The Contractor shall coordinate and schedule with the Owner the period of time during which discharge of effluent to the 6" DIP will be interrupted. 8. Upon coordination with the Owner and completion of the trenching excavation, the Contractor will proceed with tie in of the 3" HDPE to the existing 3" PVC just upstream of the existing manhole, and install the 3" HDPE parallel to the 6" DIP to the point of connection of the 3" HDPE to the existing 6" DIP, and complete that connection. In concert with laying of the 3" HDPE, the Contractor shall advance the installation of the bedding material as required by the detail on the plans. All stone material will be delivered to the site via barge. As shown on the detail upon completion of bedding and backfill, the Contractor shall then install 6 inches of ballast stone cover, with finished elevation matching the original ground elevation along the trench. 9. Upon completion of the new pipe and connections, and placing the new pipe into operation, the Contractor shall advise the Owner that discharge of effluent may resume. 10. The Contractor will then remove existing manhole and all of the existing 6" DIP that has been paralleled and abandoned. All material that is removed shall be barged from the project area and appropriately disposed of offsite. 11. Upon fully completing the work, the Contractor shall advise the Owner, the Engineer and Duke Lake Services that the project is finished. Photo 2: View of RPW A North at confluence with Lake Wylie (view downstream/southwest). View of lake area where work will be occurring. Riverpointe WWTP Effluent Outfall Modification Mecklenburg County, NC - Photos taken on 5/15/2017 Wetlands and Environmental Planning Group Leonard S. Rindner. PLLC. Photo 3: View of culvert outfall on west side of Autumn Creek Court (view upstream/northeast). Pipe carrying dredged material/discharge water will be run through this existing culvert. Riverpointe WWTP Effluent Outfall Modification NYERGMecklenburg County, NC - Photos taken on 5/15/2017 Wetlands and Environmental Planning Group Leonard S. Nndner, PLLC. Photo 4: View of culvert on east side of Autumn Creek Court (view downstream/west). Pipe carrying dredged material/discharge water will be run through this existing culvert temporarily. Riverpointe WWTP Effluent Outfall Modification Mecklenburg County, NC - Photos taken on 5/15/2017 Wetlands and Environmental Planning Group Leonard S. Rindner, PLLC. ri -4w 1# 7 • v i i r T '�' rte'+ l IF# S• sM � l ' '•'"""*�'+`'-�'' � '. r �j r WETLAND DETERMINATION DATA FORM — Eastern Mountains and Piedmont Region Project/Site: Riverpointe WWTP Effluent Outfall Modification City/County: Charlotte/Mecklenburg Anolicant/Owner: Utilities, Inc. State: NC Investigator(s): HAC Section, Township, Range: Landform (hillslope, terrace, etc.): terrace Local relief (concave, convex, none): none Subregion (LRR or MLRA): MLRA 136 Lat: 35.1007 N Long: -81.0336 W Soil Map Unit Name: PaF: Pacolet sandy loam NWI classification: Are climatic / hydrologic conditions on the site typical for this time of year? Yes X No (If no, explain in Remarks.) Are Vegetation N Soil N or Hydrology N significantly disturbed? Are "Normal Circumstances" present? Yes E No = Are Vegetation N Soil N , or Hydrology N naturally problematic? (If needed, explain any answers in Remarks.) Sampling Date: 5/15/2017 _ Sampling Point: UPL/DP1 Slope (%): 0 - 2 Datum: SUMMARY OF FINDINGS — Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Vegetation Present? Yes= No Is the Sampled Area Hydric Soil Present? Yes= No within a Wetland? Yes No Wetland Hydrology Present? Yes= No Q Remarks: HYDROLOGY Wetland Hydrology Indicators: Secondary Indicators (minimum of two required) E=Isuface Soil Cracks (136) Elsparsely Vegetated Concave Surface (138) Primary Indicators (minimum of one is required: check all that aonly) =Surface Water (Al) =True Aquatic Plants (1314) =High Water Table (A2) =Hydrogen Sulfide Odor (Cl) E=]Drainage Patterns (610) =Saturation (A3) =Oxidized Rhizospheres on Living Roots (C3) =Moss Trim Lines (616) =Water Marks (B1) =Presence of Reduced Iron (C4) =Dry -Season Water Table (C2) =Sediment Deposits (62) =Recent Iron Reduction in Tilled Soils (C6) =Crayfish Burrows (C8) =Drift Deposits (63) =Thin Muck Surface (C7) =Saturation Visible on Aerial Imagery (C9) =Algal Mat or Crust (B4) =Other (Explain in Remarks) =Stunted or Stressed Plants (D1) =Iron Deposits (B5) =Geomorphic Position (D2) =Inundation Visible on Aerial Imagery (137) =Shallow Aquitard (D3) =Water -Stained Leaves (69) =Microtopographic Relief (D4) =Aquatic Fauna (B13) =FAC -Neutral Test (D5) Field Observations: Surface Water Present? Yes= No= Depth (inches): - Water Table Present? Yes= No= Depth (inches): - Saturation Present? Yes= No= Depth (inches): Wetland Hydrology Present? Yes = No �✓ _ includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: Upland data point taken adjacent counfluence to lake/outfall of culvert at Autumn Creek Court. US Army Corps of Engineers Eastern Mountains and Piedmont — Version 2.0 VEGETATION (Five Strata) — Use scientific names of plants. Tree Stratum (Plot size: ) % Cover Species? Status 1 Betula nigra 35 Y FACW 2 Lidodendron tulipifera 25 Y FACU 3 Acer rubrum 10 N FAC 4 Carya tomentosa 10 N NI s Ulmus americana 5 N FACW Sampling Point: UPUDPI Number of Dominant Species That Are OBL, FACW, or FAC: 5 (A) Total Number of Dominant Species Across All Strata: 10 (g) Percent of Dominant Species That Are OBL, FACW, or FAC: 44% (A/B) 6. 50 ) 25 2 Impatiens capensis 20 3 Microstegium vimineum 10 7 10 5. Cyperus esculentus 5 Prevalence Index worksheet: 5 7 Helianthus laevigatus 85 = Total Cover Total % Cover of: Multiolv by: Shrub — Woody plants, excluding woody vines, Sapling Stratum (Plot size: ) Herb — All herbaceous (non -woody) plants, including OBL species x 1 = 1 Cercis canadensis 5 Y FACU FACW species x2= 2 Acer rubrum 5 Y FAC FAC species x3= 3 Magnolia grandiflora 5 Y FACU FACU species x 4= 4 Carya tomentosa 5 Y NI UPL species x 5= 5. Quercus phellos 5 Y FAC Column Totals: (A) (B) 7. 2ri Shrub Stratum (Plot size: ) 1. 2. 4. 5. 6. 7. Herb Stratum (Plot size: 1 Hedera helix 50 ) 25 2 Impatiens capensis 20 3 Microstegium vimineum 10 4 Lonicera japonica 10 5. Cyperus esculentus 5 g Galium aparine 5 7 Helianthus laevigatus 5 9. 10. 11. 12. ou Woody Vine Stratum (Plot size: ) 1 Vitis rotundifolia 5 2. 4. 5. 5 Remarks: (Include photo numbers here or on a separate sheet.) Prevalence Index = B/A = = Total Cover Hydrophytic Vegetation Indicators: 01 - Rapid Test for Hydrophytic Vegetation 02 - Dominance Test is >50% 03 - Prevalence Index is 53.0' Q4 - Morphological Adaptations' (Provide supporting data in Remarks or on a separate sheet) Problematic Hydrophytic Vegetation' (Explain) 'Indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic. = Total Cover Y FACU Tree — Woody plants, excluding woody vines, Y FACW approximately 20 ft (6 m) or more in height and 3 in. (7.6 cm) or larger in diameter at breast height (DBH). N FAC N FACU Sapling — Woody plants, excluding woody vines, N FACW approximately 20 ft (6 m) or more in height and less than 3 in. (7.6 cm) DBH. N FACU N NI Shrub — Woody plants, excluding woody vines, approximately 3 to 20 ft (1 to 6 m) in height. Herb — All herbaceous (non -woody) plants, including herbaceous vines, regardless of size, and woody plants, except woody vines, less than approximately 3 ft (1 m) in height. Woody vine — All woody vines, regardless of height. = Total Cover Y FAC Hydrophytic Vegetation �✓ Present? Yes= No = Total Cover US Army Corps of Engineers Eastern Mountains and Piedmont —Version 2.0 SOIL Sampling Point: UPUDP1 or confirm the absence of indicators.) Depth Matrix Redox Features (inches) Color (moist) % Color (moist) % Tvye ToTexture Remarks 0-20 10 YR 4/3 100 Sandy loam 'Type: C=Concentration, D=Depletion, RM=Reduced Matrix, MS=Masked Sand Grains. 2Location: PL=Pore Lining, M=Matrix Hydric Soil Indicators: =Histosol (Al) =Dark Surface (S7) Indicators for Problematic Hydric Soils': =2 cm Muck 147) =Histic Epipedon (A2) =Polyvalue Below Surface (S8) (MLRA 147, 148) (A10) (MLRA =Coast Prairie Redox (A16) =Black Histic (A3) =thin Dark Surface (S9) (MLRA 147, 148) (MLRA 147, 148) =Hydrogen Sulfide (A4) =Loamy Gleyed Matrix (F2) =Piedmont Floodplain Soils (1719) =Stratified Layers (A5) =Depleted Matrix (F3) (MLRA 136, 147) =2 cm Muck (A10) (LRR N) =Redox Dark Surface (F6) =Very Shallow Dark Surface (TF12) =Depleted Below Dark Surface (A11) =Depleted Dark Surface (F7) =Other (Explain in Remarks) =Thick Dark Surface (Al2) =Redox Depressions (F8) =Sandy Mucky Mineral (S1) (LRR N, =Iron -Manganese Masses (F12) (LRR N, MLRA 147, 148) =Sandy Gleyed Matrix (S4) MLRA 136) Q Umbric Surface (F13) (MLRA 136, 122) 'Indicators of hydrophytic vegetation and =Sandy Redox (S5) =Piedmont Floodplain Soils (F19) (MLRA 148) wetland hydrology must be present, =Stripped Matrix (S6) =Red Parent Material (F21) (MLRA 127, 147) unless disturbed or problematic. Restrictive Layer (if observed): Type: Depth (inches): Remarks: Hydric Soil Present? Yes= No F 7D US Army Corps of Engineers Eastern Mountains and Piedmont —Version 2.0 United States Department of the Interior FISH AND WILDLIFE SERVICE Asheville Field Office 160 Zillicoa Street Asheville, North Carolina 28801 September 12, 2016 Mr. Martin Lashua Utilities, Inc. P.O. Box 240908 Charlotte, North Carolina 28224 Dear Mr. Lashua: Subject: Conveyance Permit Application, Carolina Water Service, Inc. of North Carolina, Riverpointe Wastewater Treatment Facility Treated Effluent Discharge Pipe, Lake Wylie (FERC No. P-2232), located adjacent to NC Highway 49, Mecklenburg County, North Carolina On August 18, 2016, we received a letter from you requesting our review and comments on the subject project. We have reviewed the document and are providing the following comments in accordance with the provisions of the National Environmental Policy Act (42 U.S.C.§ 4321 et seq.) (NEPA); the Fish and Wildlife Coordination Act, as amended (16 U.S.C. 661-667e); and section 7 of the Endangered Species Act of 1973, as amended (16 U.S.C. 1531-1543) (Act). Project Description. According to the information you presented, the existing Riverpointe wastewater treatment plant (owned by Carolina Water Service, Inc. of North Carolina (CWSNC)) is located on Lake Wylie. The facility treats about 31,000 gallons of wastewater per day and discharges into Lake Wylie via a 6 -inch ductile iron effluent pipe. In recent years, it has been noticed that about 200 -feet of the pipe has become uncovered from storm -water erosion and fluctuating lake levels. The pipe is exposed and visible during periods of low lake levels. CWSNC is proposing the following improvements to the effluent pipe: 1) Remove the existing manhole on the shoreline and install a new replacement manhole with additional depth to allow for deeper burial of the effluent pipe; 2) Excavate a new trench (allowing for a minimum 2 -feet of pipe coverage) alongside the existing pipe from manhole to about 200 -feet into the lake. A new pipe will be installed in the trench, connected to the manhole, and the existing pipe will be removed. Equipment Use. Construction should be accomplished by operating equipment from the banks in a fashion that minimizes disturbance to woody vegetation. All equipment should be inspected daily and should be maintained in order to prevent the contamination of surface waters from leaking fuels, lubricants, hydraulic fluids, or other toxic materials. All fuels, lubricants, and other toxic materials should be stored outside the riparian management area of the stream, in a location where the material can be contained. Equipment should be checked for leaks of hydraulic fluids, cooling system liquids, and fuel and should be cleaned before fording any stream. In addition, all fueling operations should be accomplished outside the riparian management area. Erosion and Sedimentation Control. Construction activities near streams, rivers, and lakes have the potential to cause water pollution and stream degradation if measures to control erosion and sediment are not properly installed and maintained. In order to effectively reduce erosion and sedimentation impacts, Best Management Practices should be designed, installed, and maintained during land -disturbing activities. A complete design manual, which provides extensive details and procedures for developing site-specific plans to control erosion and sediment and is consistent with the requirements of the North Carolina Sedimentation and Pollution Control Act and Administrative Rules, is available at: http://www.dlr.enr.state.nc.us/pages/publications.html. Federal Endangered and Threatened Species. According to our records and a review of the information you provided, no federally listed species or their habitats occur within the project area. Therefore, we believe the requirements under section 7 of the Act are fulfilled. However, obligations under section 7 of the Act must be reconsidered if. (1) new information reveals impacts of this identified action that may affect listed species or critical habitat in a manner not previously considered, (2) this action is subsequently modified in a manner that was not considered in this review, or (3) a new species is listed or critical habitat is determined that may be affected by the identified action. Summary. Measures to minimize and/or offset potential impacts to fish and wildlife resources and the designation of contiguous areas of shoreline are necessary to ensure that this project and others like it are consistent with the primary goals of the Catawba-Wateree Hydroelectric Project license while minimizing the cumulative environmental effects of shoreline development and wastewater discharge. With that in mind, we remind you that all construction activities associated with the project should strictly follow Duke's Shoreline Management Guidelines as provided in the newly issued Catawba-Wateree Hydroelectric Project license. Thank you for allowing us to comment on this project. Please contact Mr. Bryan Tompkins of our staff at 828/258-3939, Ext. 240, if you have any questions. In any future correspondence concerning this project, please reference our Log Number 4-2-16-578. Sincerely, - - original signed - - Janet Mizzi Field Supervisor 2 B. Project Information and Prior Project History 1. Property Identification 1a. Property identification no. (tax PIN or parcel ID): 19944209, 19944111, 19944201 1 b. Site coordinates (in decimal degrees): Latitude: 35.1009 Longitude: -81.0336 1 c. Property size: 3.53 acres 2. Surface Waters 2a. Name of nearest body of water to proposed project: Lake Wylie 2b. Water Quality Classification of nearest receiving water: WS -V; B 2c. River basin: 03050101 Upper Catawba 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: The site is currently an open water lake with boat slips/docks and a wooded area adjacent to the lake surrounded by residential development known as Riverpointe. 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: 650 3d. Explain the purpose of the proposed project: Project purpose is to replace an existing/failing sewer line located under Lake Wylie. 3e. Describe the overall project in detail, including the type of equipment to be used: Construction/sequencing details attached. An hydraulic dredge/cutter will be used to dig a new trench on the lake bed to place the new line. 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 B. Project Information and Prior Project History 1. Property Identification 1a. Property identification no. (tax PIN or parcel ID): 119944209,19944111,19944201 1 b. Site coordinates (in decimal degrees): Latitude: 35.1009 Longitude: -81.0336 1 c. Property size: 3.53 acres 2. Surface Waters 2a. Name of nearest body of water to proposed project: Lake Wylie 2b. Water Quality Classification of nearest receiving water: WS -V; B 2c. River basin: 03050101 Upper Catawba 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: The site is currently an open water lake with boat slips/docks and a wooded area adjacent to the lake surrounded by residential development known as Riverpointe. 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: 650 3d. Explain the purpose of the proposed project: Project purpose is to replace an existing/failing sewer line located under Lake Wylie. 3e. Describe the overall project in detail, including the type of equipment to be used: Construction/sequencing details attached. An hydraulic dredge/cutter will be used to dig a new trench on the lake bed to place the new line. 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 B. Project Information and Prior Project History 1. Property Identification 1a. Property identification no. (tax PIN or parcel ID): 19944209, 19944111, 19944201 1 b. Site coordinates (in decimal degrees): Latitude: 35.1009 Longitude: -81.0336 1 c. Property size: 3.53 acres 2. Surface Waters 2a. Name of nearest body of water to proposed project: Lake Wylie 2b. Water Quality Classification of nearest receiving water: WS-V; B 2c. River basin: 03050101 Upper Catawba 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: The site is currently an open water lake with boat slips/docks and a wooded area adjacent to the lake surrounded by residential development known as Riverpointe. 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: 650 3d. Explain the purpose of the proposed project: Project purpose is to replace an existing/failing sewer line located under Lake Wylie. 3e. Describe the overall project in detail, including the type of equipment to be used: Construction/sequencing details attached. An hydraulic dredge/cutter will be used to dig a new trench on the lake bed to place the new line. 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? El Preliminary El 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 B. Project Information and Prior Project History 1. Property Identification 1a. Property identification no. (tax PIN or parcel ID): —719944209,19944111,19944201 1 b. Site coordinates (in decimal degrees): ILatitude: 35.1009 Longitude: -81.0336 1 c. Property size: 3.53 acres 2. Surface Waters 2a. Name of nearest body of water to proposed project: Lake Wylie 2b. Water Quality Classification of nearest receiving water: WS -V; B 2c. River basin: 03050101 Upper Catawba 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: The site is currently an open water lake with boat slips/docks and a wooded area adjacent to the lake surrounded by residential development known as Riverpointe. 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: 650 3d. Explain the purpose of the proposed project: Project purpose is to replace an existing/failing sewer line located under Lake Wylie. 3e. Describe the overall project in detail, including the type of equipment to be used: Construction/sequencing details attached. An hydraulic dredge/cutter will be used to dig a new trench on the lake bed to place the new line. 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 E] 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? El Yes ❑X No El Unknown 5b. If yes, explain in detail according to "help file" instructions. 6. Future Project Plans 6a. Is this a phased project? ❑ Yes Q No 6b. If yes, explain. Page 3 of 10 PCN Form — Version 1.4 January 2009 B. Project Information and Prior Project History 1. Property Identification 1a. Property identification no. (tax PIN or parcel ID): 19944209, 19944111, 19944201 1 b. Site coordinates (in decimal degrees): Latitude: 35.1009 Longitude: -81.0336 1 c. Property size: 3.53 acres 2. Surface Waters 2a. Name of nearest body of water to proposed project: Lake Wylie 2b. Water Quality Classification of nearest receiving water: WS-V; B 2c. River basin: 03050101 Upper Catawba 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: The site is currently an open water lake with boat slips/docks and a wooded area adjacent to the lake surrounded by residential development known as Riverpointe. 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: 650 3d. Explain the purpose of the proposed project: Project purpose is to replace an existing/failing sewer line located under Lake Wylie. 3e. Describe the overall project in detail, including the type of equipment to be used: Construction/sequencing details attached. An hydraulic dredge/cutter will be used to dig a new trench on the lake bed to place the new line. 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. S. 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