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Home My WebLink About20151213 Ver 1_Riparian Buffer Authorization_201511184 ' DUKE Environmental Services ENERGY. Duke Energy 410 S Wilmington Street Raleigh, NC 27601 November 17, 2015 Ms. Karen Higgins D Q V North Carolina Department of Environment and Natural Resources D Division of Water Resources NOV 1 8 2015 ' 401 and Buffer Permitting Unit 1617 Mail Service Center RCES Raleigh, North Carolina 27699 -1617 DENR -WATER RESOU nM x BUFFER PERK Subject: Duke Energy Progress, LLC HF Lee Energy Complex HF Lee Intake Pipe Closure Project Dear Ms. Higgins: Please find enclosed five (3) copies of the Buffer Authorization Form and accompanying documents. The project is to close the intake pipe from the HF Lee Cooling pond to the old coal fired station intake structure. A portion of this pipe has already been closed, this project will close the remaining portion of the pipe. There will be minimal impacts to the buffer to close the pipe. Only the areas of dense brush would need to be removed, the tress will be left intact. The plan is to simply clear a small pathway to allow for equipment access to the pipe via an overland route though the buffer. There will be a small excavation within the buffer to access the pipe. We believe the pipe is located approximately 5 to 6 feet below ground. Once the pipe is located a small bulkhead will be constructed within the pipe. The bulkhead is needed to prevent flowable fill from flowing in the wrong direction. Once the bulkhead is constructed, flowable fill will be injected into the pipe, until the pipe is filled. The truck containing the flowable fill will not be located within the buffer. It will sit in an area outside of the buffer. When the project is complete the pipe will be covered by soil and reseeded. Should you have questions regarding this report, please contact me at 919 - 546 -7457. Yours truly, i teve Cahoon Duke Energy — EHS CCP Permitting and Compliance Attachment D State of North Carolina ��,,��W.,R ''� Department of Environment and Natural Resources Dlvision of Water Resources Division of Water Resources 15A NCAC 0213.0233 (8)(b),.0243 (8)(b),.0250 (11)(b),.0259 (8)(b),.0267 (11)(c),.0607 (e)(2) -Buffer Authorization FORM: BA 10 -2013 Riparian Buffer Authorization Form A. Applicant Information 1. Project Information V 1 5 j 1a. Name of project: HF Lee Coal Plant Intake Pipe Closure 1 b. County: Wayne 1c. Nearest municipality: Goldsboro 1d. Subdivision name: NA 1e. Is the project located in any of North Carolina's twenty coastal counties. If yes, answer 1f below. ❑ Yes ® No 1 f. Is the project located within a NC Division of Coastal Management Area of Environmental Concern (AEC)? ❑ Yes ❑ No 2. Owner Information 2a. Name on Recorded Deed: Carolina Power and Light Company 2b. Deed Book and Page No. Book 344 Page 111 2c. Map Book and Page No. (include a copy of the recorded map that indicates when the lot was created): NA 2d. Responsible Party (for Corporations): Rick Grant 2e. Street address: 1199 Black Jack Church Road 2f. City, state, zip: Goldsboro NC 27530 2g. Telephone no.: (919) 722 -6450 2h. Fax no.: 2i. Email address: rick.grant @duke - energy.com 3. Applicant Information (if different from owner) 3a. Applicant is: ❑ Agent ® Other, specify: Duke Energy Employee 3b. Name: Steve Cahoon 3c. Business name (if applicable): Duke Energy 3d. Street address: 410 S Wilmington St 3e. City, state, zip: Raleigh NC 27601 3f. Telephone no.: 919 - 546 -7457 3g. Fax no.: 919 546 -3669 3h. Email address: Steve.cahoon @duke - energy.com 4. Agent/Consultant Information (if applicable) 4a. Name: 4b. Business name (if applicable): 4c. Street address: 4d. City, state, zip: 4e. Telephone no.: 4f. Fax no.: 4g. Email address: FORM: BA 10 -2013 Page 1 of 4 B. Project Information and Prior Project History 1. Property Identification 1a. Property identification no. (tax PIN or parcel ID): 2579623548 1 b. Site coordinates (in decimal degrees): Latitude: 35.381081 Longitude: 78.085395 1 c. Property size: 842.1 acres 2. Surface Waters 2a. Name of nearest body of water to proposed project: Neuse 2b. Water Quality Classification of nearest receiving water: WS -IV NSW 2c. River basin: Neuse 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: Existing land cover is herbaceous with a few trees only the herbaceous cover will be disturbed. This area is in the vicinity of the old steam plant site, however it has not been maintained since plant closure. 3b. Attach an 8'/z x 11 excerpt from the most recent version of the USGS topographic map indicating the location of the site See Attached. 3c. Attach an 8'/ x 11 excerpt from the most recent version of the published County NRCS Soil Survey Map depicting the project site See Attached. 3d. List the total estimated linear feet of all existing streams (intermittent and perennial) on the property: 100 linear feet of stream in the area, however the project will not impact the stream only the buffer 3e. Explain the purpose of the proposed project: The purpose of the project is the abandon the old coal fired station intake pipe. 3f. Describe the overall project in detail, including the type of equipment to be used: See Attached. 4. Jurisdictional Determinations 4a. Have jurisdictional wetland or stream determinations by the Corps or State been requested or obtained for this property/ project (including all prior phases) in the past? ❑ Yes ® No ❑ Unknown Comments: Not for this project but there has been a JD request for other onsite projects. 4b. If yes, who delineated the jurisdictional areas? Name (if known): Dicky Harmon Agency/ Consultant Company: AMEC Foster Wheeler Other: 4c. 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 ® No ❑ Unknown 5b. If yes, explain and detail according to "help file" instructions. 6. Future Project Plans 6a. Is this a phased project? ❑ Yes ® No 6b. If yes, explain. FORM: BA 10 -2013 Page 2 of 4 C. Proposed Impacts Inventory 1. Avoidance and Minimization 1a. Specifically describe measures taken to avoid or minimize the proposed impacts in designing project. See Attached. 1 b. Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques. See Attached. 1. Buffer Impacts 2a. Will the project result in an impact within a protected riparian buffer that requires buffer mitigation? ❑ Yes ® No 2b. If yes, then identify the square feet of impact to each zone of the riparian buffer that requires mitigation and calculate the amount of mitigation required in the table below. 1a. Project is in which protected basin? ® Neuse ❑ Tar - Pamlico ❑ Catawba ❑ Randleman ❑ Jordan ❑ Goose Creek 1 b. Individually list all buffer impacts below. If any impacts require mitigation, then you MUST fill out Section D of this form. Buffer impact number — Permanent (P) or Temporary T Reason for impact Type of impact (exempt, allowable, allowable w/ mitigation) Stream name Buffer mitigation required? Zone 1 impact (sq ft) Zone 2 impact (sq ft) 131 ❑ P ®T Equipment Access Allowable Neuse ❑ Yes ® No 456 B2 ❑ P ® T Construct Bulkhead Allowable Neuse ❑ Yes ® No 684 2f. Comments: B3 ❑ P ❑ T ❑ Yes ❑ No B4 ❑ P ❑ T ❑ Yes ❑ No B5 ❑ P ❑ T ❑ Yes ❑ No B6 ❑ P ❑ T ❑ Yes ❑ No Total buffer impacts 684 456 1c. Comments: D. Impact Justification and Mitigation 1. Avoidance and Minimization 1a. Specifically describe measures taken to avoid or minimize the proposed impacts in designing project. See Attached. 1 b. Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques. See Attached. 2. Buffer Mitigation 2a. Will the project result in an impact within a protected riparian buffer that requires buffer mitigation? ❑ Yes ® No 2b. If yes, then identify the square feet of impact to each zone of the riparian buffer that requires mitigation and calculate the amount of mitigation required in the table below. Zone Reason for impact Total impact (square feet Multiplier Required mitigation (square feet Zone 1 3 (2 for Catawba) Zone 2 1.5 Total buffer mitigation required: 2c. If buffer mitigation is required, is payment to a mitigation bank or NC EEP proposed? ❑ Yes ❑ No 2d. If yes, attach the acceptance letter from the mitigation bank or NC EEP. 2e. If no, then discuss what type of mitigation is proposed. 2f. Comments: FORM: BA 10 -2013 Page 3 of 4 E. Diffuse Flow Plan All buffer impacts and high ground impacts require diffuse flow or other form of ❑ Diffuse flow stormwater treatment. Include a plan that fully documents how diffuse flow will be ❑ Other BMP maintained. If a Level Spreader is proposed, attach a Level Spreader Supplement Form. 1 a. If due to site constraints, a BMP other than a level spreader is proposed, please provide a ❑ Yes ® No plan for stormwater treatment as outlined in Chapter 8 of the NC Stormwater BMP public (federal /state) land? Manual and attach a BMP Supplement Form. 1 b. F. Supplementary Information 1. Environmental Documentation 1 a. Does the project involve an expenditure of public (federal /state /local) funds or the use of ❑ Yes ® No public (federal /state) land? 1 b. If you answered "yes" to the above, does the project require preparation of an ❑ Yes ❑ No environmental document pursuant to the requirements of the National or State (North Carolina) Environmental Policy Act (NEPA/SEPA)? 1c. If you answered "yes" to the above, has the document been finalized by the State ❑ Yes ❑ No Clearing House? (If so, attach a copy of the NEPA or SEPA final approval letter.) Comments: 2. Violations 2a. Is the site in violation of DWR Wetland Rules (15A NCAC 02H .0500), Isolated Wetland ❑ Yes ® No Rules (15A NCAC 02H .1300), DWR Surface Water or Wetland Standards, or Riparian Buffer Rules (15A NCAC 02B .0200)? 2b. Is this an after - the -fact permit application? ❑ Yes ® No 2c. If you answered "yes" to one or both of the above questions, provide an explanation of the violation(s): sie! ?� Applicant/Agent's Printed Name Applicant/Agent's Signature Date (Agent's signature is valid only if an authorization letter from the applicant is provided.) Send this completed form and accompanying documents to the following: For government transportation projects sent by First Class Mail via the US Postal Service: NC DWR, Transportation Permitting Unit 1650 Mail Service Center Raleigh, NC 27699 - 1650 For all other projects sent by First Class Mail via the US Postal Service Karen Higgins NCDWR — 401 & Buffer Permitting Unit 1650 Mail Service Center Raleigh, NC 27699 - 1650 For government transportation projects sent by delivery service (UPS, FedEx, etc): OR NC DWR, Transportation Permitting Unit 512 N. Salisbury Street Raleigh, NC 27604 For all other projects sent by delivery service (UPS, FedEx, etc): OR Karen Higgins NCDWR — 401 & Buffer Permitting Unit 512 N. Salisbury Street Raleigh, NC 27604 FORM: BA 10 -2013 Page 4 of 4 Part B. 3f. Project Description The project is to abandon the upper portion of the retired H F Lee's coal fired plant's intake tunnel from the cooling pond to the intake structure. The project will include construction of a bulkhead and installation of a 9' foot in diameter grout plug. The project will consist of the following activities: 1) construction of temporary access pathway to the underground pipe, excavation of the pipe, installation of the bulkhead for grouting, grouting, restoration of impacts. A path will be created using an excavator, however no blading or grubbing will take place, the pathway will be approximately 150 linear feet by 14 feet wide. Any brush will be placed adjacent to the pathway. A 10 foot by 10 foot excavation will be made to a depth of 5 to 6 feet to access the pipe. A bulkhead will then be built to allow for grout pumping from a concrete pump or concrete pump truck station above the site out of the buffer. The concrete pumps or pump truck will be placed in containment in case of concrete spills. Part D. 1a. Specifically describe measures taken to avoid or minimize the proposed impacts in designing project. The project is designed to spend a minimum amount of area needed for the excavation, also the minimum amount of equipment needed in the buffer during the filling of the pipe with flowable fill. Also concrete containing pump trucks will be located outside of the buffer in containment. Part D. 1b. Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques A small path will be created by equipment to get to the designated project area. The path will only be 14 feet wide. No clearing or grubbing will take place in the pathway created to access the pipe to be filled. 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