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HomeMy WebLinkAboutSW8980701_CURRENT PERMIT_20231220 STORMWATER DIVISION CODING SHEET POST-CONSTRUCTION PERMITS PERMIT NO. SW8 9 s 0l 0 i DOC TYPE ® CURRENT PERMIT ❑ APPROVED PLANS ❑ HISTORICAL FILE ❑ COMPLIANCE EVALUATION INSPECTION DOC DATE 202b 12 20 YYYYMMDD �srarE v ROY COOPER Governor ELIZABETH S.BISER .� �, secretary WILLIAM E.TOBY VINSON,JR NORTH CAROLINA interim Director Envfro=enral Quality December 20'", 2023 Matt Holdings, LLC Attn: Timothy J. Matt, Manager 1924 Lunar Lane Wilmington,NC 28405 Subject: Permit Renewal Post-Construction Stormwater Management Permit No. SW8980701 Triple T Parts and Equipment New Hanover County Dear Mr. Matt: Effective August 1, 2013 the Post-Construction Stormwater Management Program has been transferred from the Division of Water Quality("DWQ")to the Division of Energy, Mineral and Land Resources("DEMLR"). All previous references to DWQ will remain in older permits issued prior to August 1, 2013 until they are modified. Please note that this permit will now reference DEMLR as the Division responsible for enforcement of the permit. On August 5, 2009, the Governor signed Session Law 2009-406. This law impacted any.development approval issued by the former Division of Water Quality under Article 21 of Chapter 143 of the General Statutes,which was current and valid at any point between January 1, 2008, and December 31,2010. The law extended the effective period of any permit that was set to expire during this time frame to three(3)years from its current expiration date. On August 2, 2010, the Governor signed Session Law 2010-177,which granted an extra year for a total of four(4)years extension. The Division of Energy, Mineral and Land Resources received a complete 8-year Permit Renewal Application for the subject permit on December 19', 2023. The Division is hereby notifying you that permit SW8980701 has been renewed, updated, and re-issued on December 20", 2023, 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 stormwater permit does not imply that the site is currently in compliance. This permit shall be effective until August 12`h,2031,which includes all available extensions, 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 an adjudicatory 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 at 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 Logan Inman in Wilmington Regional Office, at (910) 796-7215 or logan.inman@deq.nc.gov. Sincerely, //�(� Lrl'Y1� o S William E. Toby Vinson, Jr., PE, CPM, Interim Director Division of Energy, Mineral and Land Resources r«:m D 0 Q�- North Carolina Department of Environmental Quality I Division of Energy,Mineral and Land Resources Wilmington Regional Office 1127 Cardinal Drive Extension I Wilmington,North Carolina 28405 910.796.7215 State Stormwater Permit No. SW8 980701 Page 2 of 2 Enclosures: Attachment C—Permitting History copy of the Renewal Application Documents Copy of the current operation and maintenance agreement DES/lwi: %Stormwater\Permits&Projects\1 998\980701 HD\2023 12 permit 980701 cc: Wilmington Regional Office Stormwater File ®���� North Carolina Department of Environmental Quality I Division of Energy,Mineral and Land Resources W'dmington Regional Office 1 127 Cardinal Drive Extension I Wilmington,North Carolina 28405 910.7916.7215 State Slormwater Management Systems Permit No. SW8980701 STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENTAL QUALITY DIVISION OF ENERGY, MINERAL AND LAND RESOURCES POST-CONSTRUCTION STORMWATER MANAGEMENT PERMIT HIGH DENSITY COMMERCIAL 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 Matt Holdings, LLC Triple T Parts and Equipment 2715 Highway 421, Wilmington, New Hanover County FOR THE operation and maintenance of a wet detention pond in compliance with the provisions of 15A NCAC 2H .1000 effective September 1, 1995 (hereafter referred to as the "stormwaterrules') 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 August 1211, 2031, 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 252,234 square feet of impervious area. Page 1 of 5 State Stormwater Management Systems Permit No. SW8980701 3. The tract will be limited to the amount of built-upon area indicated in section 1.6 of this permit, and per approved plans. The built-upon area for the future development is limited to 0 square feet. 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. 5. The runoff from all built-upon area within the permitted drainage area(s) of this project must be directed into the permitted stormwater control system. 6. The fallowing design criteria have been provided in the wet detention pond and must be maintained at design condition: a. Drainage Area, acres: 7.42 Onsite, ftz: 323,215 Offsite, ftz: 0 b. Total Impervious Surfaces, ftz: 252,234 C. Design Storm, inches: 1 d. Pond Design Depth, feet: 7 e. TSS removal efficiency: 90% f. Permanent Pool Elevation, FMSL: 10 g. Permanent Pool Surface Area, ft2: 11,700 h. Permitted Storage Volume, ft3: 27,331 1. Temporary Storage Elevation, FMSL: 12 j. Controlling Orifice: 2.25"0 pipe k. Permitted Forebay Volume, ft3: 4,877 1. Receiving Stream/River Basin: NE Cape Fear River/ Cape Fear M. Stream Index Number: 18-74-61 n. Classification of Water Body: "SC Sw" IL 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 time 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 re-vegetation 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. g. 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 the Division. The records will indicate the date, activity, name of person performing the work and what actions were taken. Page 2 of 5 State Stormwater Management Systems Permit No. SW8980701 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. 7. Upon completion of construction, prior to issuance of a Certificate of Occupancy, and prior to operation of this permitted facility, the permittee shall cause a certification from an appropriate designer for the system installed to be submitted, 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. 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 for inspection and maintenance shall be maintained via appropriate recorded easements at all times. 10. 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 1. 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. 2. 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 02H.1045(3). Page 3 of 5 State Stormwater Management Systems Permit No. SW8980701 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. 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 V. The assignment of declarant rights to another individual or entity, vi. The sale or conveyance of the common areas to a Homeowner's or Property Owner's Association, subject to the requirements of NCGS 143-214.7(c2); b. 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 Page 4 of 5 State Stormwater Management Systems Permit No. SW8980701 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. Permit renewed, updated, and reissued this the 20th day of December 2023. NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION a / f(..X-� f William E. Toby Vinson, Jr., PE, CPM, Interim Director Division of Energy, Mineral and Land Resources By Authority of the Environmental Management Commission Permit No. SW8 980701 Page 5 of 5 Attachment C-Permitting History Triple T Parts and Equipment Permit No.SW8 980701 Approval Date Permit Action BIMSVersion Description of the Changes High Density Commercial Stormwater Project-construction,operation and maintenance of a detention Original pond in compliance with the provisions of 15A NCAC 2H .1000.The stormwater control has been 9/15/1998 Approval 1.0 designed to handle the runoff from 253,494 square feet of impervious area.This pond is designed to be operated with a vegetated filter. High Density Storrnwater Project-construction,operation and maintenance of a wet detention pond in 8/12/1999 compliance with the provisions of 15A NCAC 2H.1000.The stormwater control has been designed to handle the runoff from 252,234 square feet of impervious area. High Density Storrawater Project-construction,operation and maintenance of a wet detention pond in 728/2000 Modification compliance with the provisions of 15A NCAC 2H.1000.The stormwater control has been designed to tExpires le the runoff from 248,915 square feet of impervious area. Density Commercial Project-operation and maintenance of a wet detention pond in compliance with 7242009 Renewal 2.0rovisions of 15A NCAC 2H.1000 effective September I, 1995.The storrwater control has been gned to handle the runoff from 252,234 square feet of impervious area. 1220/2023 Renewal 3.0 8/12/20 11 Page 1 of 1 DEMLR USE ONLY Date R ceiv d Fee Paid Permit Number 11 SW O -7 0 STATE STORMWATER: PERMIT INFORMATION UPDATE APPLICATION FORM There is NO FEE for updating project name or permittee information. This form is to only to be used by the current permittee to notify the Division of- 1)changes to the Point of Contact(signing official) for the current permittee (LLC, Corporation, HOA or POA); 2)changes to the mailing address, phone number or email address of the current permittee; 3)changes to the name of the project;and 4) changes to the legal corporate name as documented by a Name Change or Merger filed with the NCSOS. A. NEW PERMIT INFORMATION State Stormwater Permit Number: SW8980701 Are you updating If so, please provide the updated information: (check all that apply): ❑ Project name ❑ Corporation Name' ❑ Permit Contact Name2.3 ❑ Permit Contact Title x❑ Mailing AddresS3 1924 Lunar Lane, Wilmington, NC 28405 ❑ Phone number ❑ Email address Provide documentation such as a Name Change/Merger filed with the NCSOS. 2 Provide supporting documentation such as NCSOS filing. The permit contact's position must be in accordance with 15A NCAC 02H .1040(1). 3 If more than one point of contact or mailing address is being changed, please attach a separate sheet. B. CERTIFICA/���JON OF PE/RMITTEE I, JET `�� � the curre tpermittee, hereby notify DEMLR that I am making the changes as listed in Section A above. I forth st that this lication for a update to the permit information currently on file is accurate and complete to the be t� my kn wledd Signature: �\JL� Date: 1, Y a Notary Public for the State of Mu 1- ( IWDf tea, C tclar do hereby certify that 52 �� fore me this the 1_day of K IIS�/QMIXr 20�, and acknowledge the due o g instrument. Witness my hand and official seal, ESU NOV 1 1 No 2023 i My commission expires ��lo Ij Stormwater Permit Information Update Form Page 1 of 1 May 11,2017 ."�� '}.r... i 1 , �. fJ, ' � S l - �� 11 1 � .. ,. { ' � � �, f i Y� DEMLR USE ONLY Date ceiv Fee Paid Permit Number l'TFO 10 Ja 2,50-!f— 1 SoJ 8 S' D 70 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 holdershall renew theirhigh 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 Permit Number: SW8980701 2. Project name: Triple T Parts and Equipment 3. Project street address: 2715 Hwy 421N City: Wilmington County: New Hanavoer ZIP : 28401 4. What, if any, changes have been made to the project as permitted? None If the project has changed from the original approved plans, please complete SWU-101 for a Major Modification or Minor Modification Application form available at: https://deg.nc.gov/about/divisions/energy- m i n eral-la n d-resou rces/en a rgy-mi n era I-land-rules/stormwater-prop ra m/post-construction. B. PERMITTEE INFORMATION If changes to the permittee or project name have been made, please complete either the Permit Update form or the Permit Transfer form available at. https://deg.nc.gov/abouttdivisions/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: Matt Holdings, LLC 2. Signing Official's Name: Jeff Battle 3. Signing Official's Title: VP 4. Mailing Address: 1924 Lunar Lane City: Wilmington State: NC ZIP : 28405 5. Street Address: 1924 Lunar Lane City: Wilmington State: NC ZIP : 28405 6. Phone: (910) 540-5529 Email: tripletibC@gmail.com t= NOV 17 2023 ,F ",rya n,u: 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/0RV19. 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: X 1. A permit application processing fee of$505.00 payable to NCDEQ. JB 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. JB 4. O&M Agreements, Please select one: ❑ 1 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 requesting a copy be sent to me. I agree to keep this on file with the permit. JB 5. Designer Certifications, Please select one: ® 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. 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). hftps:/Apvww.sosnc.gov/online services/search/bv title/ Business Registration ECEIVE NOV 17 2023 Stormwater Permit'Renewal Application Form Page 2 of 3 May 11, 2018 D. PERMITTEE'S CERTIFICATION the person legally responsible for the permit, certify that I have a copy of the Permit and O&M Agreement on site (or 1 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-he proper forms to modify or transfer the permit prior to any changes to the project, SCMs, or ownership. II i ation Ided on this permit renewal application is, to the best of my knowledge, correct and co e. Signature: i Date: �/ _1/' " NOTARIZ N6N:' y�/� I, I 1 r lW'OhA a Notary Public for the State of CCd vol County of palyk;i , do hereby certify that <ar� -B-2-W personally appeared before me this thhaaaae'�����a��� ar((�'' day of N6VQ.m6, 20 ate, and acknowledge the due exec�rof the fo7ginstrument. Witness my hand and official seal, €€�`` NpTARy S,`= Mr SIRES - a� ( = t V % o PUBJ.XC' rc�r Nota t NNgrMmnllM� My commission expires ECEIVE NOV 17 2023 BY: Stormwater Permit Renewal Application Form Page 3 of 3 May 11,2018 \l Permit No. .SGu g q Eo701 iO W (to be provided by DWQ) State of North Carolina Department of Environment and Natural Resources Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM WET DETENTION BASIN SUPPLEMENT This form may be photocopied for use as an original DWQ Stormwater Management Plan Review: A complete stormwater management plan submittal includes a wet detention basin supplement for each basin, design calculations, plans and specifications showing all basin and outlet structure details, and a signed and notarized operation and maintenance agreement. I. PROJECT INFORMATION (please complete the following information): Project Name: _Triple T Parts & Equipment Contact Person: Charles Cazier Phone Number: 910 _763-5100 For projects with multiple basins, specify which basin this worksheet applies to: Basin Bottom Elevation 3.0— ft. (average elevation of the floor of the basin) Permanent Pool Elevation 10.0 ft. (elevation of the orifice) Temporary Pool Elevation 12.0_ft. (elevation of the discharge structure overflow) Permanent Pool Surface Area 11.700_sq.ft. (water surface area at the orifice elevation) Drainage Area 6.92 ac. (on-site and off-site drainage to the basin) Impervious Area 5.80_ac. (on-site and off-site drainage to the basin) Permanent Pool Volume 47.934_ cu.ft. (combined volume of main basin and forebay) Temporary Pool Volume 27.331_cu.ft. (volume detained above the permanent pool) Forebay Volume 4 877_cu.ft. SA/DA1 used 0.0360 (surface area to drainage area ratio) Diameter of Orifice 2.25 in. Design TSS Removal 90 % (85% TSS removal required, see item k below) II. REQUIRED ITEMS CHECKLIST The following checklist outlines design requirements per the Stormwater Best Management Practices manual (N.C. Department of Environment, Health and Natural Resources, November 1995) and Administrative Code Section: 15 A NCAC 2H .1008. Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If the applicant has designated an agent in the Stormwater Management Permit Application Form, the agent may initial below. If a requirement has not been met, attach justification. Form SWU-102 Rev 1/August 1998 Page 1 of 3 Applicants Initials eat-1 a. The temporary pool controls runoff'from the 1 inch storm event. G17G b. The basin length to width ratio is greater than 3:1. CQ-1 c. The basin side slopes above the permanent pool are no steeper than 3:1. Cc� d. A submerged and vegetated perimeter shelf at less than 6:1 is provided (show detail). e. Vegetation above the permanent pool elevation is specified. (Z f. An emergency drain is provided to empty the basin. -;t-- g. The permanent pool depth is between 3 and 6 feet (required minimum of 3 feet). CPC It. The temporary pool draws down in 2 to 5 days. CpG i. A trash rack is provided for both the overflow and orifice. C_6 C j. The forebay volume is approximately equal to 20% of the total basin volume. k. Sediment storage is provided in the permanent pool. t fx 1. A 30-foot vegetative filter is provided at the outlet2 (include erosive flow calculations). Ct2 in. Recorded drainage easement for each basin including access to nearest right-of-way. 6_01n n. A site specific operation and maintenance (O & M) plan is provided. /pG o. A vegetation management/mowing schedule is provided in the O & M plan. p. Semi-annual inspections are specified in the O & M plan. GOCG q. A debris check to be performed after every storm event is specified in the O & M plan. 1lJG r. Specific clean-out benchmarks are specified in the O & M plan (elevation or depth). [j:;C s. A legally responsible party is designated in the O & M plan3 (include name and title). CLl_ t. If the basin is used for sediment and erosion control during construction, clean out of the basin is specified to be performed prior to use as a wet detention basin. 4- Footnotes: 1 when using the Division SA/DA tables,the correct SA/DA ratio for permanent pool sizing should be computed based upon the actual impervious%and permanent pool depth. Linear interpolation should be employed to determine the correct value for non- standard table entries. 2 The requirement for a vegetative filter may be waived if the wet detention basin is designed to meet 90%TSS removal. 3 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. M. WET DETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT The wet detention system is defined as the wet detention basin, forebay, non-integrated pretreatment Systems (pretreatment other than forebayss), and the vegetated filter if one is provided. This system (check one) ❑ does 9 does not incorporate a vegetated filter. This system (check one) ❑ does [!'does not incorporate non-integrated pretreatment. Maintenance activities shall be performed as follows: 1. After every significant runoff producing rainfall event and at least monthly: Fonn SWU-102 Rev 1/August 1998 Page 2 of 3 a. ,Inspect the wet detention system for sediment accumulation, erosion, trash accumulation, grass cover, and general condition. b. Check and clear the orifice of any obstructions such that drawdown of the temporary pool occurs within 2 to 5 days. 2. Repair eroded areas immediately, re-seed as necessary to maintain good vegetative cover, mow vegetative Cover to maintain a maximum height of six inches, and remove trash as needed. 3. Inspect and repair the collection system (i.e. catch basins, piping, swales, riprap, etc.) quarterly to maintain proper functioning. 4. Remove accumulated sediment from the wet detention basin system semi-annually or when depth is reduced to 75% of the original design depth. Removed sediment shall be disposed of in an appropriate manner and shall not be handled in a manner that will adversely impact water quality (i.e. stockpiling near a wet detention basin or stream, etc.) The original design depth is: 7' The sediment removal benchmark depth is: 5.25'_ 5. Remove cattails and other indigenous wetland plants when they cover 75% of the basin surface. These plants shall be encouraged top grow along the basin perimeter. 6. If the basin must be drained for an emergency or to perform maintenance, the flushing of sediment through the emergency drain shall be minimized to the maximum extent possible. 7. All components of the wet detention basin system shall be maintained in good working order. I acknowledge and agree by my signature below that I am responsible for the performance of the above maintenance procedures. I agree to notify DWQ of any problems with the system or changes in the name of the project, responsible party, or address. Print name: _Tim Matt Address: 1924 Lunar Lane Phone: 256-2194 Title: esi owner Signature: Date: lil qcf /l + 1, mom eA V. Lou�l�I i h a Notary Public Tfor� the,$tate of �/pd� CO-VO I hn-- County of M eW Q,vro do hereby certify that i t i r/1u�1' personally appeared before me this 14-4 day of ::J(tiKz_ , 19 C11 and acknowledge the due execution of the forgoing infiltration system maintenance requirements. Witness my hand and official seal, 4d \" � V - l "��\Gp v LOUGyGZ A-Ai *0TARY a My commission expires o 10116 = r e y =_z: ecio %CJ QfN una � Form SWU-102 Rev 1/August 1998 Page 3 of 3 .q .Y' , 'p .�... . t� ..r A'' - c�� �� .y,. • J / a): ' &i.5•. is 1 j�� •.�, .. t•' ' ..1 .,,.,t° .i TE 00063 State Stormwater Management Systems Permit No. SW8 980701 Modification Triple T Parts and Equipment Stormwater Project No. SW8 980701 New Hanover County Engineer's Certification I, Phillip G. Tripp as a duly registered Professional Engineer in the State of North Carolina, having been authorized to observe (periodically/week444i tine) the construction of the project, Triple T Parts and Equipment (Project) for Matt Holdings, LLC (Project Owner) hereby state that, to the best of my abilities, due care and diligence was used in the observation of the project construction such that the construction was observed to be built within substantial compliance and intent of the approved plans and specifications. The checklist of items on page 2 of this form is included in the Certification. Noted deviations from approved plans and specifications: SEAL Signature %`�21 kc IA-I `` %%IIIIC1IpI��,' Registration Number 1737 e�............ 4 r O jf SEAL _ Date ? (6 ' 09 t 17374 :i a ���p'�:y�l NEED••.`�\4� ° 'Uk b 9 2009 BY•-- State Stormwater Management Systems Permit No. SW8 980701 Modification I Certification Requirements: Page 2 of 2 �1. The drainage area to the system contains approximately the permitted acreage. 2. The drainage area to the system contains no more than the permitted amount of built-upon area. 2)3. All the built-upon area associated with.the project is graded such that the runoff drains to the system. _6_4. The outlet/bypass Structure elevations are per the approved plan. 5. The outlet structure is located per the approved plans. 6. Trash rack is provided on the outlet/bypass structure. 7' 7. All slopes are grassed with permanent vegetation. ® 8. Vegetated slopes are no steeper than 3:1. I. The inlets are located per the approved plans and do not cause short- circuiting of the system. -0-110. The permitted amounts of surface area and/or volume have been provided. 11. Required drawdown devices are correctly sized per the approved plans. _P9L12. All required design depths are provided. -0-13. All required parts of the system are provided, such as a vegetated shelf, and a forebay. 14. The overall dimensions of the system, as shown on the approved plans, are provided.