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HomeMy WebLinkAboutSW8050840_CURRENT PERMIT_20220112STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO. SW8 O 5 o 8 40 DOC TYPE CURRENT PERMIT ❑ APPROVED PLANS ❑ HISTORICAL FILE ❑ COMPLIANCE EVALUATION INSPECTION DOC DATE 2 o 2 2 0% 12 YYYYMMDD ROY COOPER Governor ELIZABETH S. BISER secnstmy BMN W_ RE_ NN Dfrraor January 12, 2022 Holt Real Estate Enterprises, Inc. Attn: Louis S. Cox, President 1709 Clinton Road Fayetteville, NC 28312 NORTH CAROLINA Envfrronmentaf QuaAty Subject: Permit Renewal Post -Construction Stormwater Management Permit No. SW8 050840 Holt Oil Convenience Store Brunswick County Dear Mr. Cox: The Division of Energy, Mineral and Land Resources received a complete 8-year Permit Renewal Application for the subject permit on December 28, 2021.' The Division is hereby notifying you that permit SW8050840 has been renewed, updated, and re -issued on January 12, 2022, as attached. As requested, a copy of the current operation and maintenance agreement is also enclosed. Please be aware that the renewal and re -issuance of this stohnwater permit does not imply that the site is currently in compliance. This permit shall be effective until September 28, 2027 and does not supersede any other agency permit that may be'required. The project shall be subject to the conditions and limitations as specified therein. This permit does not impose new or increased stormwater control requirements; it clarifies the rules and requirements of this program to provide you with a better understanding of your obligations under this permit. Failure to comply with these requirements will result in future compliance problems. Please note that this permit is not transferable except after notice to and approval by the Division. If any parts, requirements, or limitations contained in this, permit are unacceptable, you have the right to request "judicatory hearing by filing a written petition with the Office of Administrative Hearings (OAH). The written petition must conform to Chapter 150B of the North Carolina General Statutes and must be'filed with the OAH within thirty (30) days of receipt of this permit. You should contact the OAH with all questions regarding the filing fee (if a filing fee is required) and/or the details of the filing process at 6714 Mail Service Center, Raleigh, NC 27699-6714, or via telephone at 919-431-3000, or visit their website it www.NCOAH.com. Unless such demands are made this permit shall be final and binding. If you have any questions concerning this permit, please contact Ashley Smith in the Wilmington Regional Office; at (910) 796-7215 or ashleymsmith@ncdenr.gov. Sincerre_l`y Brian Wrenn, Director Division of Energy, Mineral and Land Resources Enclosures: Attachment C — Permitting History Renewal Application Documents Copy of the current operation and maintenance agreement DES/ams: \\\Stormwater\Permits & Projects\2005\050840 HD\2022 01 permit 050840 CC' Wilmington Regional Office Stormwater File D � Q / North Carolina Department of Environmental Quality I Division of Energy, Mneral and Land Resources Wilmington Regional office 1127 Cardinal Drive Extension I Wilmington. North Carolina 28405 rvwrm cvww.- ^+�^�ad�+�r� / 910.796.7215 Post -Construction Stormwater Management Permit No. SW8 050840 STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENTAL QUALITY DIVISION OF ENERGY, MINERAL AND LAND RESOURCES POST -CONSTRUCTION STORMWATER MANAGEMENT PERMIT HIGH DENSITY DEVELOPMENT In accordance with the provisions of Article 21 of Chapter 143, General Statutes of North Carolina as amended, and other applicable Laws, Rules, and Regulations PERMISSION IS HEREBY GRANTED TO Holt Real Estate Enterprises, Inc. Holt Oil C-Store 3675 Maco Road NE, Leland, Brunswick County FOR THE construction, operation and maintenance of a wet detention pond in compliance with the provisions of 15A NCAC 2H .1000 (hereafter referred to as the "stormwater rules') and as outlined in the application, approved stormwater management plans, supplement, calculations, operation and maintenance agreement, recorded documents, specifications, and other supporting data (the "approved plans and specifications") as attached and/or on file with and approved by the Division of Energy, Mineral and Land Resources (the "Division" or "DEMLR"). The project shall be constructed, operated and maintained in accordance with these approved plans and specifications. The approved plans and specifications are incorporated by reference and are enforceable part of this permit. This permit shall be effective from the date of issuance until September 28, 2027 and shall be subject to the following specified conditions and limitations. The permit issued shall continue in force and effect until the permittee files a request with the Division for a permit modification, transfer, renewal, or rescission; however, these actions do not stay any condition. The issuance of this permit does not prohibit the Director from reopening and modifying the permit, revoking and reissuing the permit, or terminating the permit for cause as allowed by the laws, rules, and regulations contained in Title 15A NCAC 2H.1000 and NCGS 143-215.1 et.al. I. DESIGN STANDARDS 1. This permit is effective only with respect to the nature and volume of stormwater described in the application and other supporting data. 2 This stormwater system has been approved for the management of stormwater runoff as described in Section 1.6 of this permit. The stormwater control has been designed to handle the runoff from 108,824 square feet of impervious area. This includes 53,824 square feet of proposed impervious, and 55,000 square feet of future impervious. 3. The tract will be limited to the amount of built -upon area indicated on page 2 of this permit, and per approved plans. There is no built -upon area allotment for future development. 4. All stormwater collection and treatment systems must be located in either dedicated common areas or recorded easements The final plats for the project will be recorded showing all such required easements, in accordance with the approved plans. Page 1 of 5 Post -Construction Stormwater Management Permit No SW8 050840 5. The runoff from all built -upon area within the permitted drainage area of this project must be directed into the permitted stormwater control system. 6. The following design criteria have been provided in the wet detention pond and must be maintained at design conditions: a. Drainage Area, acres: 3.65 Onsite, ft2: 158,994 Offsite, ft2: None b. Total Impervious Surfaces, ft2: 108,824 Onsite, ft2: 108.824 Offsite, ft2. None C. Design Storm, inches. 1.5 d. Pond Depth, feet: 3.0 e. TSS removal efficiency: 90% f. Permanent Pool Elevation, FMSL: 29.00 g. Permanent Pool Surface Area, ft2: 13,510 h. Permitted Storage Volume, ft3: 13,236 i. Temporary Storage Elevation, FMSL: 29.9 J. Controlling Orifice: 1.5"0 pipe k. Permitted Forebay Volume, ft3: 5,465 I. Receiving Stream/River Basin UT to Hood Creek / Cape Fear M. Stream Index Number: 18-66 n. Classification of Water Body: "C; Sw" II. SCHEDULE OF COMPLIANCE 1. The stormwater management system shall be constructed in its entirety, vegetated and operational for its intended use prior to the construction of any built -upon surface. 2. During construction, erosion shall be kept to a minimum and any eroded areas of the system will be repaired immediately. 3. The permittee shall at all times provide the operation and maintenance necessary to assure the permitted stormwater system functions at the design condition. The approved Operation and Maintenance Plan must be followed in its entirety and maintenance must occur at the scheduled intervals including, but not limited to: a. Semiannual scheduled inspections (every 6 months). b. Sediment removal. C. Mowing and revegetation of slopes and the vegetated filter. d. Immediate repair of eroded areas. e. Maintenance of all slopes in accordance with approved plans and specifications. f Debris removal and unclogging of outlet structure, orifice device, flow spreader, catch basins and piping. a Access to the outlet structure must be available at all times. 4. Records of maintenance activities must be kept and made available upon request to authorized personnel of DEMLR. The records will indicate the date, activity, name of person performing the work and what actions were taken. 5. Decorative spray fountains will not be allowed in the stormwater treatment system, as the permanent pool volume is less than 30,000 cubic feet. 6. The facilities shall be constructed, operated and maintained in accordance with the provisions of this permit, the approved plans and specifications, and the supporting documents attached to this permit and on file with the Division. Page 2 of 5 Post -Construction Stormwater Management Permit No. SW8 050840 Upon completion of construction, prior to issuance of a Certificate of Occupancy, and prior to operation of this permitted facility, a certification must be received from an appropriate designer for the system installed certifying that the permitted facility has been installed in accordance with this permit, the approved plans and specifications, and other supporting documentation. Any deviations from the approved plans and specifications must be noted on the Certification. A modification may be required for those deviations. This system was certified on July 14, 2006. No physical changes are required for the pond under the April 4, 2016 modification, and so the existing certification is still valid. If the pond is modified in the future such that physical changes are required, it will have to be re -certified. 8. If the stormwater system was used as an Erosion Control device, it must be restored to design condition prior to operation as a stormwater treatment device, and prior to occupancy of the facility. 9. Access to the stormwater facilities shall be maintained via appropriate easements at all times. 10. The Director may notify the permittee when the permitted site does not meet one or more of the minimum requirements of the permit. Within the time frame specified in the notice, the permittee shall submit a written time schedule to the Director for modifying the site to meet minimum requirements. The permittee shall provide copies of revised plans and certification in writing to the Director that the changes have been made. 11. No person or entity, including the permittee, shall alter any component shown in the approved plans and specifications. Prior to the construction of any modification to the approved plans, the permittee shall submit to the Director, and shall have received approval for modified plans, specifications, and calculations including, but not limited to, those listed below. For changes to the project or SCM that impact the certifications, a new or updated certification(s), as applicable, will be required and a copy must be submitted to the appropriate DEQ regional office upon completion of the modification. a. Any modification to the approved plans and specifications, regardless of size including the SCM(s), BUA, details, etc. b Redesign or addition to the approved amount of BUA or to the drainage area. C. Further development, subdivision, acquisition, lease or sale of any, all or part of the project and/or property area as reported in the approved plans and specifications. d. Altering, modifying, removing, relocating, redirecting, regrading, or resizing of any component of the approved SCM(s), the stormwater collection system and/or vegetative conveyance shown on the approved plan. e. The construction of any allocated future BUA. f. The construction of any permeable pavement, #57 stone area, public trails, or landscaping material to be considered a permeable surface that were not included in the approved plans and specifications g. Other modifications as determined by the Director. III. GENERAL CONDITIONS CORRECTIVE ACTIONS REQUIRED. If the facilities fail to perform satisfactorily, the permittee shall take immediate corrective actions. This includes actions required by this Division and the stormwater rules such as the construction of additional or replacement on -site stormwater systems. These additional or replacement measures shall receive a permit from the Division prior to construction PERMIT RENEWAL. A permit renewal request must be submitted at least 180 days prior to the expiration date of this permit. The renewal request must include the appropriate application, documentation and the processing fee as outlined in Title 15A NCAC 021-1.1045(3). 3. CHANGES TO THE PROJECT NAME, PERMITTEE NAME OR CONTACT INFORMATION. The permittee shall submit a completed Permit Information Update Application Form to the Division within 30 days to making any one of these changes. Page 3 of 5 Post -Construction Stormwater Management Permit No. SW8 050840 4 TRANSFER. This permit is not transferable to any person or entity except after notice to and approval by the Director. Neither the sale of the project and/or property, in whole or in part, nor the conveyance of common area to a third party constitutes an approved transfer of the permit. a. TRANSFER REQUEST. The transfer request must include the appropriate application, documentation and the processing fee as outlined in 15A NCAC 02H.1045(2). This request must be submitted within 90 days of the permit holder meeting one or more of the following: i. A natural person who is deceased, ii. A partnership, limited liability corporation, corporation, or any other business association that has been dissolved; iii. A person or entity who has been lawfully and finally divested of title to the property on which the permitted activity is occurring or will occur through foreclosure, bankruptcy, or other legal proceeding. IV. A person or entity who has sold the property, in whole or in part, on which the permitted activity is occurring or will occur. TRANSFER INSPECTION. Prior to transfer of the permit, a file review and site inspection will be conducted by Division personnel to ensure the permit conditions have been met and that the project and the on -site stormwater system complies with the permit conditions. Records of maintenance activities performed to date may be requested. Projects not in compliance with the permit will not be transferred until all permit and/or general statute conditions are met 5. COMPLIANCE. The permittee is responsible for compliance with the terms and conditions of this permit until the Division approves the transfer request. a. APPROVED PLANS AND SPECIFICATIONS. A copy of this permit, approved plans, application, supplement, operation and maintenance agreement, all applicable recorded documents, and specifications shall be maintained on file by the permittee at all times. b. DIVISION ACCESS. The permittee grants Division Staff permission to enter the property during normal business hours to inspect all components of the permitted project. C. ENFORCEMENT. Any individual or entity found to be in noncompliance with the provisions of a stormwater management permit or the requirements of the stormwater rules is subject to enforcement procedures as set forth in NCGS 143 Article 21. d. ANNUAL CERTIFICATION. The permittee shall electronically submit to the Division an annual certification completed by either the permittee or their designee confirming the projects conformance with permit conditions e. OBTAINING COMPLIANCE. The Director may notify the permittee when the permitted site does not meet one or more of the minimum requirements of the permit. Within the time frame specified in the notice, the permittee shall submit a written time schedule to the Director for modifying the site to meet minimum requirements The permittee shall provide copies of modified plans and certification in writing to the Director that the changes have been made. f. OTHER PERMITS. The issuance of this permit does not preclude the permittee from complying with and obtaining any other permits or approvals that are required for this development to take place, as required by any statutes, rules, regulations, or ordinances, which may be imposed by any other Local, State or Federal government agency having jurisdiction. Any activities undertaken at this site that cause a water quality violation or undertaken prior to receipt of the necessary permits or approvals to do so are considered violations of NCGS 143-215.1, and subject to enforcement procedures pursuant to NCGS 143-215.6. Page 4 of 5 Post -Construction Stormwater Management Permit No SW8 050840 Permit renewed, updated and reissued this the 12th day of January 2022 NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION ,3 Brian Wrenn, 6irector Division of Energy, Mineral and Land Resources By Authority of the Environmental Management Commission Page 5 of 5 Attachment C - Permitting History Holt Oil Convenience Store Maco Road Permit No. SW8 050840 Approval Permit Action BIMS Description of the Changes Date Version 9/28/2005 Original 1.0 Approval Impervious Area: The 2006 permit approved 47,410sf of impervious area. Following corrected re -calculations, the pond is now permitted for 108,824sf of 4/4/2016 Modification 1.1 impervious area. Orifice: The drawdown orifice has increased from I.Omsl to 1.5msl. Plan Set: The plan set dated April 4, 2016 replaces all plan sheets previously permitted. Modification, Transfer, and Correction issued in the same permit, different dates for BIMS event. Correction: Data in Previous Permit: The September 28, 2005 permit was designed for the l Oyr storm required by the county as well as the 1.0" storm required by the State. The pond calculations have been re -run at 1.5" per the current regulations and the permit has been updated to reflect the appropriate data. Permanent Pool Elevation: The 2005 supplement had a typo in the permanent pool elevation. It was shown to be 29.17msl (the centerline of the drawdown pipe) as opposed to 29.00msl (the invert of the pipe). This has been 4/5/2016 Transfer 1.2 corrected. Permanent Pool Area: The 2005 supplement had a typo in the permanent pool area. It was shown to be 13,310sf, but it should have showed 13,510sf. This has been corrected. Permanent Pool Volume and Fountains: The permanent pool volume has been re -calculated and determined to be 25,480cf. This is below the 30,OOOcf threshold where fountains are permitted, and so that option has been removed from the permit. Temporary Pool Volume (Permitted Storage Volume): As a result of the permanent pool elevation and area typos, the temporary pool volume was incorrectly determined to be 14,910cf. It has been corrected to be 13,326cf. Transfer: from Holt Oil Company, Inc. to Holt Real Estae Enterprises, Inc. 1/12/2022 Renewal 2.0 Expires September 28, 2027 Permit Number: /�A) $ 6Se)$ Q O to be provided by DWQ) Drainage Area Number: Wet Detention Basin Operation and Maintenance Agreement I will keep a maintenance record on this BMP. This maintenance record will be kept in a log in a known set location. Any deficient BMP elements noted in the inspection will be corrected, repaired or replaced immediately. These deficiencies can affect the integrity of structures, safety of the public, and the removal efficiency of the BMP. The wet detention basin system is defined as the wet detention basin, pretreatment including forebays and the vegetated filter if one is provided. This system (check one): ❑ does ® does not incorporate a vegetated filter at the outlet. This system (check one): ❑ does ® does not incorporate pretreatment other than a forebay. Important maintenance procedures: — Immediately after the wet detention basin is established, the plants on the vegetated shelf and perimeter of the basin should be watered twice weekly if needed, until the plants become established (commonly six weeks). — No portion of the wet detention pond should be fertilized after the first initial fertilization that is required to establish the plants on the vegetated shelf. — Stable groundcover should be maintained in the drainage area to reduce the sediment load to the wet detention basin. — If the basin must be drained for an emergency or to perform maintenance, the flushing of sediment through the emergency drain should be minimized to the maximum extent practical. — Once a year, a dam safety expert should inspect the embankment. Ell ECr�'gC V G After the wet detention pond is established, it should be inspected o a month and within 24 hours after every storm event greater than 1.0 inches (or 1 inW if ur 1016 Coastal County). Records of operation and maintenance should be k t in a known set location and must be available upon request. BY:�� Inspection activities shall be performed as follows. Any problems that are found shall be repaired immediately. BMP element: Potentialproblem: How I will remediate theproblem: The entire BMP Trash/debris is present. Remove the trash/debris. The perimeter of the wet Areas of bare soil and/or Regrade the soil if necessary to detention basin erosive gullies have formed. remove the gully, and then plant a ground cover and water until it is established. Provide lime and a one-time fertilizer application. Vegetation is too short or too Maintain vegetation at a height of long. approximately six inches. Form SW401-Wet Detention Basin O&M-Rev.4 Page 1 of 4 Permit Number: (to be provided by DWQ) Drainage Area BMP element: Potentialproblem: How I will remediate theproblem: The inlet device: pipe or The pipe is clogged. Unclog the pipe. Dispose of the swale sediment off -site. The pipe is cracked or Replace the pipe. otherwise damaged. Erosion is occurring in the Regrade the swale if necessary to swale. smooth it over and provide erosion control devices such as reinforced turf matting or riprap to avoid future problems with erosion. The forebay Sediment has accumulated to Search for the source of the a depth greater than the sediment and remedy the problem if original design depth for possible. Remove the sediment and sediment storage. dispose of it in a location where it will not cause impacts to streams or the BMP. Erosion has occurred. Provide additional erosion protection such as reinforced turf matting or riprap if needed to prevent future erosion problems. Weeds are present. Remove the weeds, preferably by hand. If pesticide is used, wipe it on the plants rather than spraying. The vegetated shelf Best professional practices Prune according to best professional show that pruning is needed practices to maintain optimal plant health. Plants are dead, diseased or Determine the source of the dying. problem: soils, hydrology, disease, etc. Remedy the problem and replace plants. Provide a one-time fertilizer application to establish the ground cover if a soil test indicates it is necessary. Weeds are present. Remove the weeds, preferably by hand. If pesticide is used, wipe it on the plants rather than spraying. The main treatment area Sediment has accumulated to Search for the source of the a depth greater than the sediment and remedy the problem if original design sediment possible. Remove the sediment and storage depth. dispose of it in a location where it will not cause impacts to streams or the BMP. Algal growth covers over Consult a professional to remove 50% of the area. and control the algal growth. Cattails, phragmites or other Remove the plants by wiping them invasive plants cover 50% of with pesticide (do not spray). the basin surface. EGEIVEh MAR 2 3 2016 Form SW401-Wet Detention Basin O&M-Rev.4 U Page 2 of 4 Permit Number: (to be provided by DWQ) Drainage Area Number: BMP element: Potentialproblem: How I will remediate theproblem: The embankment Shrubs have started to grow Remove shrubs immediately. on the embankment. Evidence of muskrat or Use traps to remove muskrats and beaver activity is present. consult a professional to remove beavers. A tree has started to grow on Consult a dam safety specialist to the embankment. remove the tree. An annual inspection by an Make all needed repairs. appropriate professional shows that the embankment needs repair. if applicable) The outlet device Clogging has occurred. Clean out the outlet device. Dispose of the sediment off -site. The outlet device is damaged Repair or replace the outlet device. The receiving water Erosion or other signs of Contact the local NC Division of damage have occurred at the Water Quality Regional Office, or outlet. the 401 Oversight Unit at 919-733- 1786. The measuring device used to determine the sediment elevation shall be such that it will give an accurate depth reading and not readily penetrate into accumulated sediments. When the permanent pool depth reads 2.00 feet in the main pond, the sediment shall be removed. When the permanent pool depth reads 1.50 feet in the forebay, the sediment shall be removed. Sediment Removal Bottom 27_50 --------------- FOREBAY BASIN DIAGRAM (fill in the blanks) ft Min. Sediment Storage Form SW401-Wet Detention Basin O&M-Rev.4 Permanent Pool Elevation 29.00 Pool Sediment Removal Elevation 2700 Volume Bottom Elevation MAIN POND ECEI W E MAR 2 3 2016 gf. Pave 3 of 4 II i11. Sediment Storage Permit Number: (to be provided by DWQ) I acknowledge and agree by my signature below that I am responsible for the performance of the maintenance procedures listed above. I agree to notify DWQ of any problems with the system or prior to any changes to the system or responsible party. Project name: Holt Oil C-Store BMP drainage area number: Print name: Louis Cox Title: President Holt Real Estate Enterprises, Inc Address: PO Box 53157 Note: The legally responsible party should not be a homeowners association unless more than 50% of the lots have been sold and a resident of the subdivision has been named the president. I, Tos eA- , QAj-e-, t U( , a Notary Public for the State of r / L , County of 1 / et,) } IlkMo P✓ do hereby certify that LoLk 1:s/ ,')/X personally appeared before me this 23 day of 20 /(o , and acknowledge the due execution of the forgoing wet detention basin maintenance requirements. Witness my hand and official seal, JOSEPH MARCUCILLI Notary Public New Hanover Co., North Carolina My Commission Expires June 7, 2017 SEAL My commission expires V �C ,,Q- 7 V1 iF ECE' @i MAR 2 3 2016 BY: Permit Number: (to be provided by DWQ) I acknowledge and agree by my signature below that I am responsible for the performance of the maintenance procedures listed above. I agree to notify DWQ of any problems with the system or prior to any changes to the system or responsible party. Project name: Holt Oil C-Store BMP drainage area number: Print name: Louis Cox Title: President Holt Real Estate Enterprises, Inc Address: PO Box 53157 Note: The legally responsible party should not be a homeowners association unless more than 50% of the lots have been sold and a resident of the subdivision has been named the president. I, 5b5 Qk-it t L- t , a Notary Public for the State of _�) ! , County of %%e,J do hereby certify that LOLu i _s '7Y, personally appeared before me this J-3 day of L 2016 , and acknowledge the due execution of the forgoing wet detention basin maintenance requirements. Witness my hand and official seal, JOSEPH MARCUCILLI Notary Public New Hanover Co., North Carolina My Commission Expires June 7, 2017 SEAL My commission expires 4L_ _ - 7 V 1 -4- FTI EGEII V MAR 2 3 2016 BY: D. PERMITTEE'S CERTIFICATION I, ZOws JI & , the person legally responsible for the permit, certify that I have a copy of the Permit and O&M Agreement on site (or I will obtain a copy and it will be kept on site), that I am responsible for the performance of the maintenance procedures, and the site has been and will be maintained according to the O&M Agreement and approved plans. I agree to notify DEMLR of any problems with the SCMs or built -upon area and to submit the proper forms to modify or transfer the permit prior to any changes to the project, SCMs, or ownership. All information provided on this permit renewal application is, to the best of my knowledge, correct and complete. Signature: C%'`W 96 Date: NOTARIZATIO I,A a Notary Public for the State of V'ayb lin L. County of GY do hereby certify that oULS.- S - I personally appeared before me this the 23 day of OCA 20�and acknowledge the due execution of the forgoing instrument. Witness my hand and official seal, (Notary Seal DEBORAH A HOTTON Notary Public Notary Signature North Carolina Ponder County My commission expires DAD p 8 2021 BY� Stormwater Permit Renewal Application Form Page 3 of 3 May 11, 2018 ULMLK UbL UNLY Date eceiv d Fee Paid Permit Number t(QSo s0s V)8' 0508 0 NC DEQ Division of Energy, Mineral and Land Resources STATE STORMWATER: PERMIT RENEWAL APPLICATION FORM In accordance with 15A NCAC 2H.1045(3), the current permit holder shall renew their high density permit 180 days prior to its expiration. Renewed permits are valid for a period of 8 years per Session Law 2011-398 (SB 781) Section 60.(c). This application form is for permit renewals only. A. PROJECT INFORMATION 1. State Stormwater //P/eermit Number: S�O e -�O yo y� 2. Project name: IlVe7- �rL 6,V1 e1,-eiC �YD(F 11119"" o 10v*V 3. Project street address: ,Col9W City: Ze- Apti County: ,q�Jwsc ZIP 4. What, if any, changes have been made to the project as permitted? If the project has changed from the original approved plans, please complete SWU-101 fora Major Modification or Minor Modification Application form available at: https://deg.nc.gov/about/divisions/energy- mi neral-land-resources/energy-mineral-land-rules/stormwater-grog ram/post-construction. B. PERMITTEE INFORMATION If changes to the permittee or project name have been made, please complete either the Permit Update form orthe Permit Transferform available at: https'//deg.nc.gov/about/divisions/energy-mineral-land- resources/energy-mineral-land-rules/stormwater-program/post-construction. State Stormwater Permits do not automatically transfer with the sale of the property. //// // // 1. Current Permit Holder's Company Name/Organization: 11wr Al ¢¢ st /P.t�2i f2S�2�C 2. Signing Official's Name: 4Vurs - - Z� 3. Signing Official's Title: Z/esloo-m - 4. Mailing Addr ss: U City: A -e I!� ZIP : o28c3/a 5. Street Address: All City: State. ZIP: 6. Phone' Email: elarh ECEIVE DEC 2 8 2021 Stormwater Permit Renewal Form Page 1 of 3 May 11, 2018 C. SUBMITTAL REQUIREMENTS Submit the application package to the appropriate DEMLR Regional Office (Coastal, SA Waters) or DEMLR Central Office (Urbanizing Areas Ph 2, USMP, Non -Coastal HQW/ORW). Only applications packages that include all required items listed below will be accepted and reviewed. Initial each item below to indicate that the required information is provided in the application package: �L 1. A permit application processing fee of $505.00 payable to NCDEQ. 2. One original signed hard copy and one electronic copy of this completed form. The signing official named on this application to represent the current permittee must meet one of the following: a. Corporation — a principle executive officer of at least the level of vice-president; b Limited Liability Company (LLC) — a manager or company official as those terms are defined in G.S. 57D "North Carolina Limited Liability Company Act;' c. Public Entity — a principal executive officer, ranking official, or other duly authorized employee; d. Partnership or limited partnership — the general partner; e. Sole proprietor; or f. Letter of authorization signed by one of the signatories noted in a — e above authorizing the signature of another entity. 3. One hard copy and one electronic copy of recorded documents required by the original permit that have not yet been received by DEMLR, including: deed restrictions, protective covenants, condominium/planned community declaration and easements. If the project has been built, include documentation that the maximum BUA per lot or maximum total BUA has not been exceeded. If the project has not been built, include a signed agreement that the final recorded deed restrictions and protective covenants will be submitted at a later date 4 O&M Agreements, Please select one: ❑ I have a copy of the current recorded O&M Agreement for all SCMs, and I will continue to keep this on file with the permit; or I do not have a copy of the current recorded O&M Agreement for all SCMs and am J requesting a copy be sent to me. I agree to keep this on file with the permit. y� 5. D�esJgfier Certifications, Please select one: L A copy of the certification(s) confirming that the project was built in accordance with the approved plans have been previously provided to the Division; or ❑ A copy of the certification(s) confirming that the project was built in accordance with the approved plans are enclosed; or ❑ The project has not yet been built. N 1k 6. [IF APPLICABLE] If the project has been built, one original hard copy and one electronic copy of a signed, sealed, and dated letter from a licensed professional stating that the SCMs have been inspected, and that they have been built and maintained in accordance with the permit. 7. [IF APPLICABLE] When the permittee is a corporation or a limited liability corporation (LLC): Provide one hard copy and one electronic copy of documentation from the NC Secretary of State, or other official documentation, which supports the titles and positions held by the persons listed in Section C.2 per 15A NCAC 2H. 1043(3)(b). https://www.sosnc.gov/online services/search/bv title/ Business Registration DEC 2 8 2029 Stormwater Permit Renewal Application Form Page 2 of 3 May 11, 2018 r- Permit N,—.-5//t �D✓D�/ `� (to be provided by DWG) A7*111 1 NCDENR STORMWATER MANAGEMENT PERMIT APPLICATION FORM 401 CERTIFICATION APPLICATION FORM WET DETENTION BASIN SUPPLEMENT This form must be filled out, printed and submitted. The Required Items Checklist (Part ill) must be printed, filled out and submitted along with all of the required information Project name Contact person Phone number Date Drainage area number I11D E SIGN IIN F.ORMAT,ION Site Characteristics Drainage area 158,994!e Impervious area, post -development I 108,824;ft2 %impervious 68.45 % Design rainfall depth I 1.51m Storage Volume: Non -SA Waters N A�TF9J\\OG . v_�i1 ✓_w�^ 7 y O liiii� r Minimum volume required F 13,236 ft' Volume provided r I 13,236 to OK, volume provided is equal to or In excess of volume required. Storage Volume: SA Waters 1.5"runoff volume r-- —�ry3 Pre -development 1-yr, 24-hr runoff I I it Post -development 1-yr, 24-hr runoff i ft3 Minimum volume required it Volume provided I its `Ci Peak Flow Calculations A R 0�///// Is the pre/post control of the 1yr 24hr storm peak Bow required? I n I(Y or N) \\\\\�� ` 1-yr, 24-hr rainfall depth Rational C, in y•.9 i r 9t- •• pre -development 1(umtless) a SEAL Rational C, post -development { j(unitless) = g56TT Rainfall Intensity.l -yr, 24-hr storm Pre -development 1-yr, 24-hr peak flow i �Inmr 0.11 f Isec �/ •;vGINE, •�J`'��` Post -development l-yr, 24-hr peak flow 0.39 ft3lsec '///���0 • Pre/Post 1-yr, 24-hr peak flow control 0.28 fOisec ��� \\\\ i Elevations Temporary pool elevation 29 901 fmsl Permanent pool elevation I 29.001fmsl I I 6 SHWT elevation (approx at the perm. pool elevation) 29.00,fmsl Z Top of 10ft vegetated shelf elevation I 29.001 fmsl / Bottom of 10ft vegetated shelf elevation I 27.001 fmsl Sediment cleanout, top elevation (bottom of pond) I 27.00ifmsl Sediment cleanout, bottom elevation I 26,001fmsl Sediment storage provided 1.00 it Is there additional volume stored above the stale -required temp. pool? n ((Y or N) E_GEVVE�j Elevation of the top of the additional volume I Ifmsl JAN 2 1 20 iu 16 Form SW401-Wet Detention Basin-Rev.9-4/18/12 Parts 1811 Design Summary, Page 1 or 2 -i Y` �t i Permit No • (to be provided by DWD) I I AD ESIGN IINF,ORMATION Surface Areas Area, temporary pool I f�' 15,500j fe Area REQUIRED, permanent pool 12,561 fh SAIDA ratio I 7.90i (umtless) I Al Area PROVIDED, permanent pool, A._p, 13,510.W OK - C- r'1 rN7ye s Area, bottom of 10fl vegetated shell Ate„ _ 7,1101ff Area, sediment cleanout, top elevation (bottom of pond), A., 5,7801 fit` `_ /fin' p 0 5e1" q (/ O' Volumes / Volume, temporary pool 13,266, ft' OK Drji, Volume, permanent pool, V.J. I 25,4801 g' 7 Volume, forebay (sum of forebays if more than one forebay) r 5,4651ft' 4� Forebay% of permanent pool volume 21.4%% OK SAIDA Table Data Design TSS removal _ �90;% Coastal SAIDA Table Used? ( y I(Y or N) Mountain/Piedmont SAIDA Table Used? n I(Y or N) SAIDA ratio 7.90 (unilless) Average depth (used in SAIDA table) Calculation option 1 used? (See Figure 10-2b) ( n _ �(Y or N) Volume, permanent pool, V,,m-,, Area provided, permanent pool, Ate„ v,, 25,480 ft' 13,510 ft` ) 32 I , O Average depth calculated I lit Need 3 ft min. Average depth used in SAIDA, it., (Round to nearest 0.5ft) I Ift "rl+f5 u-w f �-�..� der;, n Calculation option 2 used? (See Figure 10-2b) Area provided, permanent pool, A.. I n I (Y or N) 13,510 fl /I w 4- L�Q Area, bottom of 10ft vegetated shelf, A., ,tie, 7,110 ft' ./— Area, sediment cleanout, top elevation (bottom of pond), AbO_ „ 5,780 (f2 'Depth" (distance blw bottom of 1 Oft shelf and top of sediment) 0.00 ft Average depth calculated I Ift Average depth used in SAIDA, it,,, (Round to down to nearest 0 5fl) ; Ift Drawdown Calculations Drawdown through onficev ' _ _ y (Y or N) Diameter of orifice (if circular) I 1.501 m Area of orifice (if-noncimular) tin' Coefficient of discharge (Cc) i 0 601 (unitless) Driving head (Ho) 1 0.301 It Drawdown through weir! n I(Y or N) Weir type I (unitless) Coefficient of discharge (C„) llimitless) Length of weir (L) ; it Driving head (H) I Ift Pre -development 1-yr, 24-hr peak flow 1 0.11)fl'/sec Post -development 1-yr, 24-hr peak flow 1 0.391 ft3/sec Storage volume discharge rate (through discharge orifice or weir) 1 0.031 ft3lsec Storage volume drawdown time 4 70i days OK, draws down in 2-5 days Additional Information Vegetated side slopes Vegetated shelf slope f- I 6!.1 OK Insufficient shelf slope. /1 Vegetated shelf width I `42:0I OK -F }:MB Length of towpath to width ratio I 31 1 OK Length to width ratio 1 3.01:1 OK �wv, •/di.r�. Trash rack for overflow&odfice? I y I(Y or N) OK Freeboard provided I 1.11 it OK Vegetated filter provided? Recorded drainage easement providedv I n I(Y or N) I na I (Y or N) OK OK ��-ee -+ E G �- � b i E Capures all mnoff at ultimate build -out? I y I (Y or N) OK Drain mechanism for maintenance or emergencies is: ]pump- _ --� Fomn SW401-Wet Detention Basm-Rev 9-4118/12 Parts I. & II. Design Summary, Page 2 of 2 Permit No III. REQUIRED ITEMS CHECKLIST (to be provided by DWQ) Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a requirement has not been met, attach justification. Page/ Plan Initials S et No. ( 1. Plans (1" - 50' or larger) of the entire site showing: - Design at ultimate build -out, - Off -site drainage (if applicable), - Delineated drainage basins (include Rational C coefficient per basin), - Basin dimensions, - Pretreatment system, - High Flow bypass system, - Maintenance access, - Proposed drainage easement and public right of way (ROW), - Overflow device, and M - Boundaries of drainage easement. 2. Partial plan (1" = 30' or larger) and details for the wet detention basin showing 7 - Outlet structure with trash rack or similar, - Maintenance access, - Permanent pool dimensions, - Forebay and main pond with hardened emergency spillway, - Basin cross-section, - Vegetation specification for planting shelf, and - Filter strip. Z 3. Section view of the wet detention basin (1" = 20' or larger) showing: - Side slopes, 3:1 or lower, - Pretreatment and treatment areas, and - Inlet and outlet structures. 4. If the basin is used for sediment and erosion control during construction, clean out of the basin is specified / 2 on the plans prior to use as a wet detention basin. 5 A table of elevations, areas, incremental volumes & accumulated volumes for overall pond and for forebay, to verify volume provided. 6 A construction sequence that shows how the wet detention basin will be protected from sediment until the entire drainage area is stabilized 7. The supporting calculations. I. "^ 8. A copy of the signed and notarized operation and maintenance (O&M) agreement. 9. A copy of the deed restrictions (if required). 10. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests County soil maps are not an acceptable source of soils information. Form SW401-Wet Detention Basin-Rev.9-4/18/12 JAN 2 1 20io art III. Required Items Checklist, Page 1 of 1