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HomeMy WebLinkAboutSW8060133_CURRENT PERMIT_20210528STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO. SW8 0�00133 DOC TYPE ® CURRENT PERMIT ❑ APPROVED PLANS ❑ HISTORICAL FILE ❑ COMPLIANCE EVALUATION INSPECTION DOC DATE 202I 0G2'5 YYYYMMDD ROY COOPER Governor DIONNE DELULGAT71 Secretary BRIAN WRENN Director May 28, 2021 NORTH CAROLINA Envhonmental QuaUry PVO Leland, LLC Managed by Mesos Capital, LLC Attn: Mr. Pancham Gupta, Manager 471 N. Broadway, #351 Jericho, NY 11753 Subject: Permit Transfer State Stormwater Management Permit No. SW8 060133 Village Oaks Apartments Brunswick County Dear Mr. Gupta On May 27, 2021, the Wilmington Regional Office received a complete request to transfer the ownership of the subject state stormwater management permit under the provisions of 15A NCAC 02H.1045(1)(a). DEMLR staff has inspected the project, reviewed the available documentation, and determined that the project is currently in compliance with the terms and conditions of the state stormwater permit. By signing the Name/Ownership Transfer form and Operation and Maintenance Agreement, you have accepted the responsibility for complying with the terms and conditions outlined in this permit. The Division is hereby notifying you that the subject permit has been transferred on May 28, 2021. A copy of the transferred and updated permit and associated documents are enclosed. Please note that this transferred, updated, and re -issued permit does not impose new or different terms; it merely restates and clarifies some of the previous terms to provide you with a better understanding of your obligations under the permit. This permit shall be effective from the date of issuance until February 20, 2028. The project shall be subject to the conditions and limitations as specified therein and does not supersede any other agency permit that may be required. 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. This cover letter, attachments, and all documents on file with DEMLR shall be considered part of this permit and is herein incorporated by reference. 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. D ra oft 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 2a4O5 •6+--�+��'� 910.796.7215 State Stormwater Permit No. SW8 060133 Page 2 of 2 If you have any questions, need additional copies of the permit or approved plans, please contact Kelly Johnson in the Wilmington Regional Office, at (910) 796-7215 or Kelly Johnson. Sincerely, CL4�- �4JO Brian Wrenn, Director Division of Energy, Mineral and Land Resources Enclosures: copy of the Permit Transfer Application Form copy of the signed and approved Operation & Maintenance Agreement DES/ kpj: \\\Stormwater\Permits & Projects\2006\060133 HDU021 05 permit 060133 cc: Mr. Tom Tucker, Manager, Park at Village Oaks, LLC; previous permittee 315 Friday Drive, Wilmington, NC 28411 Mr. Brad Sedgwick, PE. JBS Consulting, PA 7332 Cotesworth Drive, Wilmington, NC 28405 Wilmington Regional Office Stormwater File o�vsa u.msr mw` /' North Carolina Department of Environmental Quailty I Division of Energy, Mineral and Land Resources Wilmington keglonal Office 1127 Cardinal Drive Extension I Wilmington North Carolina 28405 910.796.7215 State Stormwater Management Systems Permit No. SW8 060133 STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENTAL QUALITY DIVISION OF ENERGY, MINERAL AND LAND RESOURCES 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 PVO Leland, LLC Village Oaks Apartments 413, 415, 417, and 419 Village Road, Leland, Brunswick County FOR THE construction, operation and maintenance of 2 wet detention ponds in compliance with the provisions of 15A NCAC 2H .1000 (hereafter referred to as the "stormwater rules') and the approved stormwater management plans and specifications and other supporting data as attached and on file with and approved by the Division of Energy, Mineral and Land Resources (DEMLR or Division) and considered a part of this permit. This permit shall be effective from the date of issuance until February 20, 2028, and shall be subject to the following specified conditions and limitations: 1. 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 on page 3 of this permit. Pond # 1 has been designed to handle the runoff from 86,750 square feet of impervious area. Pond # 2 has been designed to handle the runoff from 95,540 square feet of impervious area. 3. The tract will be limited to the amount of built -upon area indicated on page 3 of this permit, and per approved plans. There is no built -upon area allocated for future development in this permit. 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 of this project must be directed into the permitted stormwater control system. Page 3 of 7 State Stormwater Management Systems Permit No. SW8 060133 6. The following design criteria have been provided in the wet detention pond and must be maintained at design condition: P,,ond 1-- Pond 2 Drainage Area Onsite Offsite Acres ft2 ft2 2.94 128,177 0 3.00 130,940 0 Total Impervious Surfaces ft2 86,750 95,540 Design Storm inches 1 (1.5 for 2,200 new BUA) 1 Pond Depth feet 5.0 5.0 TSS removal efficiency % 90 90 Permanent Pool Elevation FMSL 16.0 16.0 Permanent Pool Surface Area ft2 6,268 7,183 Permitted Storage Volume ft3 8,138 7,859 Temporary Storage Elevation FMSL 17.2 17.0 Controlling Orifice "0 pipe 1.25 1.25 Permitted Forebay Volume ft3 2,419 2,851 Receiving Stream:. Ut to Sturgeon Creek River Basin Cape Fear Stream Index Number ��;,,•,�M 18-77-1 Classification of Water Body="` `` C;Sw II. SCHEDULE OF COMPLIANCE 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. The permittee shall at all times provide the operation and maintenance necessary to assure the permitted stormwater system functions at optimum efficiency. 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. Page 4 of 7 State Stormwater Management Systems Permit No. SW8 060133 5. Decorative spray fountains will be allowed in the stormwater treatment system, subject to the following criteria: a. The minimum permanent pool volume is 30,000 cubic feet. b. The fountain must draw its water from less than 2' below the permanent pool surface. c. Separated units, where the nozzle, pump and intake are connected by tubing, may be used only if they draw water from the surface in the deepest part of the pond. d. The fountain may not be placed into the forebay. e. The falling water from the fountain must be centered in the pond, away from the shoreline. f. The maximum horsepower for a fountain in either pond is 1/8 horsepower. 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, 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. The permittee shall submit the Certification to the Division within 30 days of completion of the project. 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. 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. Page 5 of 7 State Stormwater Management Systems Permit No. SW8 060133 11. The permittee shall submit final site layout and grading plans for any permitted future areas shown on the approved plans, prior to construction. 12. A copy of the approved plans and specifications shall be maintained on file by the Permittee for a minimum of ten years from the date of the completion of construction. 13. 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. III. GENERAL CONDITIONS This permit is not transferable to any person or entity except after notice to and approval by the Director. The permittee shall submit a completed and signed "Permit Transfer Application Form" (available on the Division website) accompanied y the required tee and supporting documentation as listed on the form, to the Division at least 60 days prior to any one or more of the following events: a. The sale or conveyance of the project area in whole or in part, except in the case of an individual lot sale that is made subject to the recorded deed restrictions and protective covenants; b. The assignment or conveyance of declarant rights to another individual or entity; c. 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); d. Dissolution of the partnership, corporate, or LLC entity, subject to NCGS 55-14-05 or NCGS 57D-6-07 and 08; e. Bankruptcy, f. Foreclosure, subject to the requirements of Session Law 2013-121. The permittee is responsible for compliance with all permit conditions until such time as the Division approves the transfer request. Neither the sale of the project, in whole or in part, nor the conveyance of common area to a third party constitutes an approved transfer of the stormwater permit. Current Permittee Name or Address Changes: The permittee shall submit a completed "Permit Information Update Application Form" (available on the Division website tote Uivision witrun 30 clays to maKing any one or more of the following changes: a. A name change of the current permittee; b. A name change of the project; c. A mailing address change of the permittee. 4. Any individual or entity found to be in noncompliance with the provisions of this stormwater management permit or the requirements of the Stormwater rules is subject to enforcement procedures as set forth in NCGS 143 Article 21. 5. The issuance of this permit does not preclude the Permittee from complying with any and all statutes, rules, regulations, or ordinances, which may be imposed by other government agencies (local, state, and federal) having jurisdiction. 6. In the event that the facilities fail to perform satisfactorily, including the creation of nuisance conditions, the Permittee shall take immediate corrective action, including those as may be required by this Division, such as the construction of additional or replacement stormwater management systems. Page 6 of 7 State Stormwater Management Systems Permit No. SW8 060133 The permittee grants DEQ Staff permission to enter the property during normal business hours for the purpose of inspecting all components of the permitted stormwater management facility. 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 permit conditions. Unless specified elsewhere, permanent seeding requirements for the stormwater control must follow the guidelines established in the North Carolina Erosion and Sediment Control Planning and Design Manual. 10. Approved plans and specifications for this project are incorporated by reference and are enforceable parts of the permit. 11. The permittee shall submit a permit renewal application request and renewal fee at least 180 days prior to the expiration date of this permit. 12. 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 p5A NCAC 02H.1045(3). Permit transferred and reissued this the 28th day of May 2021 NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION F Brian Wrenn, Director Division of Energy, Mineral and Land Resources By Authority of the Environmental Management Commission L'�i'i�T[1�[Ti1T:�i�y'dE:IrZ�3�Z�kZr3 Page 7 of 7 Permit Number: L�/ ✓ _3 I% D 2) (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 basil. — If the basil must be drained for an emergency or to perform maintenance, the flushing of sediment through the emergency drain should be minim zed to the maximum extent practical. — Once a year, a dam safety expert should inspect the embankment. After the wet detention pond is established, it should be inspected once a month and within 24 hours after every storm event greater than 1.0 inches (or 1.5 inches if in a Coastal County). Records of operation and maintenance should be kept in a known set location and must be available upon request. 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.3 Page 1 of 4 Permit Number: (to be provided by DTVQ) Drainage Area Number: BMP element: Potentialproblem: Flow 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. Form SW401-Wet Detention Basin O&M-Rev.3 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. 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 3.75 feet in the main pond, the sediment shall be removed. When the permanent pool depth reads 3.00 feet in the forebay, the sediment shall be removed. Sediment Removal Bottom 13.0 1 ----------------- FOREBAY BASIN DIAGRAM (fill in the blanks) i ft Min. Sediment Storage Permanent Pool Elevation 16.0 Pool Sediment Removal Elevation 1225 Volumt ----------------------- ------ Bottom Elevation MAIN POND 1-ft Storage Form S W401-Wet Detention Basin O&M-Rev.3 Page 3 of 4 Permit Number: (to be proWded 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: Village Oaks Apartments BMP drainage area number: Print name: Tom Tucker, Park at Village Oaks, L.L.C. Title: Managing Member Address: 315 Friday Drive, Wilmington, NC 28411 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. ✓Ip '' II , a Notary Public for the State of County of �P_t�.) krYA. jee- , do hereby certify that I {'lorna8 ,i personally appeared before me this 30 day of fiand acknowledge the due execution of the forgoing wet detention basin maintenance requirements. Witness my hand and official seal, REBECCA A. GREEN NOTARY PUBLIC � NEW HANOVER COUNTY, N.C. 'Ay Gommissron EsDl2s 3-3-2009 SEAL My commission expires �n v 'S d= Form SW401-Wet Detention Basin O&M-Rev.3 Page 4 of 4 I'cl I11II i\�Illlll)l;l: •-�(��D/(/Q (/��,� ///� (to be provided by DlVQ) Drainage Arca Vumber._L Wet Detention Basin Operation aild Maiirtenarice Agreement I will keep a maintenance record on this B\MP. This maintenance record will be kept in log in a known set location.:Any deficient BiMP elements noted in the insper.tiou will be corrected, repaired or replaced immediately. These deficiencies can affect [lie inteurity of structures, safety of the public, and the removal efficiency of the BIMP. The wet detention basin system is defined as the wet detention basin, pretreatment including forebays and the vegetated filter if one is provided. Tlus system (check one): El does t�_' does not incorporate a vegetated filter at the nutlet. —�q This system (check oil(,,): I t, ❑ does ;< does not incorporate pretreatment other than a forebay. ry important maintenance procedures: - Immediately after the wet detention bashi is established, the plants on the' vegetated shelf and perimeter of tire basin should be watered twwe weekly if 1 needed, until the plants become established (coilimonl), six wi:eks). m - No portion of the wet detention pond shotdd be feitihzed 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 drainecl for an emergency or to perform maintenance. t:hla flushing of sedunent through the emergency drain should be minimized to the maximum extent practical. - Once a year, a dam safety expert should inspect the embankmenP. After the cvet detention pond is established, it should be inspected ollce a month and within 24 hours after every storm event greater than 7..0 inches (ur 7.5 inches if in a ' PIAR J Coastal County). Records of operation and maintenance should be kept in a known sPtV.` zUi J t. location and must be available upon request. inspection activities shall be perforated as follows. Any problems that are founcl shall��� be repaired inunediately. Rbfl' element: Potential problem: How I ll reu ndiafc _ the luuc oble 1'he entire I3 Vt1' Trash/debris s present Remove with_e trash/debris. - _ The perimeter of the wet :\reas of bare soil and/or ReYrade, the soil if necessary to detention baser erosive gullies have formecl. Iemoyc the gully, and then plant a ground cover and water until it is established. P[OVlde lime and a ono -time (rlf it i,^.rr :Iry a ivn. Vegetation is too short or too r\Maintain vegetation at ac.height of Ion,. I approximmely six inI•hr•c Forst SW401-Wet Detention Basin 0&Iv1-Rcv.3 Page 1 of=1 Permit Number: (to be provided by LlnQ) Drainage Area Number: 131 -element: Potential prnblom: Flow I will remediate the probiern: The inlet device pipe or Swale The pipe is clogged. Unclog the pipe Dispose of the �I sediment off -site. The pipe is cracked or otherwise cimta ed. Replace the pipe. Erosion is occurring in the swale. Regrade the swale if necessary to smooth it over and provide erosion control devices such as reinforced _ The foiebay Sediment has accumulated to turf malting or riprap to avoid future problems with erosion. _ Scarch for the SOUrie of the a depth greater than the original design depth for sediment and remedy the pioblern if possible. Remove the sediment and sediment storage. dispose of it in a location where it will not cause impacts to streams or the BIVI . Erosion has occurred. Provide additional erosion protection such as reinforced tirif _ matting m 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 vegetated shelf Best professional practices show that pruning is needed the plants rather than spraying,. Prune according to best professional practices to maintain optimal plant health. Plants are dead, dlsea5ed OI' Determine the, sOnrce 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 main treatment area _ Sediment has accumulated to the plants rather Chan sprayit�. Search lot die source of the a depth greater thml the original design sediment sedimentand renwdy tie problem if possible. Remove the sediment and storage depth. dispose. of it in a location where it will not cause impacts to streams or the B&I P. Algal growth covers over Consult a professional to remove 50% of the area, and control the algal Ll_orrth. Cattail::, phraginiter or other Invasive plants Covet. 50% of the basin surface Remove the plants by wiping them with pemiddv, (do not sprllv). k1A4 0 1 2021 . { fonts SW401-\Vet Detention Basin O&M-ltev.i By: -- pace 2 of l I omit Number: 6'o be ppovided by DfVO) Drainage Area Number: 13 4p element: Potential problem: Iow I_wiII remedi ate the problem: The embankment Shrubs have started to grow Remove shrubs immediately. i on the embankment. Evidence of urnskrat or Usc it to rauove ntrtskr, is ;mei beaver activity is present. consult a professional to remove beavers. A tree has started to grow on Consult a data safety specialist to the embankment. remove the tree. An arurual inspection by an _ Make all needed repairs. appropriate professional shows that tile embankment needs repair. the OutletdevlcL clogglilghas occuned. Clean out theQuttettlevlce. Disp(.isu of the sectiment off -site. _ The outlet device is damaged Re rat it or replace the outlet device. The receiving water _ Erosion or other signs of Contact the local nC Division of danmge have occurred at the Water Quality Regional Office, or outlet. the 401 Oversight Unit at 9t9-733- 1756. The measuring device used to determine the sectiment elevation shall be such that it will give all accurate depot reading and not readily penetrate into accumulated sediments. When the permanent pool depth reads 3.75 feet in the main pond, the secliment shall be removed. When the permanent pool depth reads 3.00 feet in the forebay, the secliment shall be removecl. BASIN DIAGRAM ('fill in the blanks) 0 Permanent Pool Elevation 16.0 Sed ment Removnl E Pe mm�en fool ----------- --- Volume Sedaunt Removal tilevation 12.?i Volume Bottom lilevatiol 12.0-ft\4in.------------------_-J_____ — ______/ --- Sediment Bottom Elmition 11.0 1-rt \, $" Storage Sedium Swine F01ZF,1iAY !91A1N POND MAR AR 6 1 2021 Form SW401-Wet Deteation Basin 0&bf-1(ev.3 BY. Page 3 of 4 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 seven maintenance procedures listed above. 1 agree to notify DWQ of any problems with the system or prior to any changes to the system or responsible party. Print name: Pancham Gupta, PVO Leland LLC Title: Managing Member Address: 471 N Broadway, #351, Jericho, NY 11753 05/20/2021 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. a Notary Public for the State of/ A/ew yCY—k-- County of `/ Va S 5 C JJ —,do hereby certify that 1 blc'n ' G 0,0 personally appeared before me this day of QO D 1, and acknowledge the due execution of the forgoing wet detention basin maintenance requirements. Witness my hand and official seal, JOSE ANTHONY RODRIGUEZ Notary Public - State of New York NO. 01 R06405512 Qualified in Suffolk County My Commission Expires Mar 9, 2024 SEAL My commission expires 03)C)q)aU Form S WU-102 Rev 3.99 Page 4 of 4 Permit Nuntber.��%��� -?� /41 O D. (to be prorided by DYVQ) Drainage Area Number: Wet Detention Basin Operation and Maintenance Agreement I will keep a maintenance record on this BNIP. 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. After the wet detention pond is established, it should be inspected once a month and within 24 hours after every storm event greater than 1.0 inches (or 1.5 inches if in a Coastal County). Records of operation and maintenance should be kept in a known set location and must be available upon request. Inspection activities shall be performed as follows. Any problems that are found shall be repaired immediately. BMP element: Potentialproblem: FIow 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.3 Page 1 of 4 Permit Number: (to be provided by D6VQ) Drainage Area Number: 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 (lead, 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 IMP. 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. Form SW401-Wet Detention Basin O&M-Rev.3 Page 2 of 4 Permit Number: (to be provided by DiVQ) 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. The outlet device Clogging has occurred. Clean out the outlet device. Dispose of the sediment off -site. The outlet device is damaged I 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 3.75 feet in the main pond, the sediment shall be removed. When the permanent pool depth reads 3.00 feet in the forebay, the sediment shall be removed. Sediment Removal Bottom 13.0 I ----------------- BASIN DIAGRAM (fill in the blanks) t ft Min. Sediment Storage Permanent Pool Elevation 16.0 Pool Sediment Removal Elevation 1225 Volum, ----------------------- I ------ Bottom Elevation Storage FORE,BAY MAIN POND Form SW401-Wet Detention Basin O&M-Rev.3 Page 3 of 4 Pennit (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: Village Oaks Apartments BMP drainage area number: 2 Print name: Tom Tucker, Park at Villagc Oaks, L.L.C. Title: Managing Member Address: 315 Friday Drive, Wilmington, NC 28411 Signature: /gam/IA0170 4 U/ /-eh Date: 2 —1?0 - op 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. 1, G�CG! . �yGCn , 1 I I, a Notary Public for the State of t �.ID//41 eatoll raL County of Net) ttanpuei/ , do hereby certify that / �rVtdL9"IZ e, I�e e- personally appeared before me this 3o day of JuAu �-Voj , and acknowledge the due execution of the forgoing wet detention basin maintenance requirements. Witness my hand and official seal, P REBECA AGRI (NOTAR`( PUBLICNEW HANOVER COUNTY, N.CMy Commission Expires 3-3-2009 SEAL My commission expires MAKc�' 3 ,-:)-tro, Form SW401-Wet Detention Basin O&M-Rev.3 Page 4 of 4 DEMLR USE ONLY Date a eived Fee Paid Permit Number 3 17 7,5 1 S09 06 D 3 nc DEQ Division of Energy, Mineral and Land Resources STATE STORMWATER: PERMIT TRANSFER APPLICATION FORM Pursuant to 15A NCAC 02H.1045 and other applicable statues as reference within Only complete applications packages will be accepted and reviewed. This form and the required items (with original signatures) must be sent to the appropriate DEMLR Regional Office, which can be determined by locating the project on the interactive online map at., http://deo.nc.govlcontactlregional-offices. After this application is accepted, DEMLR will conduct a compliance inspection and report any deficiencies to the current permittee and/or the proposed permittee. Per the state stormwater rules and the state stormwater permit conditions, the permit shall not be transferred until: 1. the current permittee resolves all non-compliance issues identified in the inspection report; 2. the current permittee negotiates a resolution with the proposed permittee (in writing and signed by both entities. The negotiated resolution must identify the necessary actions, the responsible party(ies), and the timelines to correct the deficiencies. The site must either be found in compliance or a copy of the negotiated resolution must be submitted prior to the transfer of the permit.); or 3. in the case where a transfer falls under G.S. 143-214.7(c2) (see also SL 2011-256), the proposed permittee resolves all non-compliance issues upon acquiring the permit. Signature requirements for the named signing official (for current and proposed permittee) must meet the following: • Corporation - a principal executive officer of at least the level of vice-president; • Limited Liability Company (LLC) - the designated manager; (Documentation from the NC Secretary of State or other official documentation must be provided that states the titles and positions held by the person who signed the application (pursuant to 02H.1040) that shows they have legal authority to sign for the LLC) • Municipality - a ranking official or duly authorized employee; • Partnership or limited partnership - the general partner; • Sole proprietor; • The signature of the consultant or other agent shall be accepted on this permit transfer application only if accompanied by a letter of authorization signed by one of the signatories noted in a-e above, as applicable. A. GENERAL INFORMATION 1. State Stormwater Permit Number: 2. Project name: Village Oaks Apartments Is this an updated project name from the current permit? ❑ Yes ® No 3. Reason for the permit transfer request: The entire property is under contract to be sold. MAC 01 2021 �� Stormwater Permit Transfer Application Form Page 1 of 7 April 27, 2018 B. PERSON(S) WHO HAVE SIGNED THIS FORM (select only one response below) ® 1. Both the current and proposed permittees ❑ 2. Only the current permittee of a condominium or planned community (skip Part F & G). In accordance with G.S. 143-214.7(c2) (see also SL 2011-256), this type of transfer is allowed only when all of the following items can be truthfully checked: ❑ Any common areas related to the operation and maintenance of the stormwater management system have been conveyed to the unit owners' association or owners' association in accordance with the declaration; ❑ The declarant has conveyed at least fifty percent (50%) of the units or lots to owners other than a declarant (provide documentation per submittal requirements below); ❑ The stormwater management system is in compliance with the stormwater permit. NOTE: If subdivision was built prior to 1999, the Declarant's Attorney can make a determination that the elements of the Planned Community Act (see §47F) have been met by the Declarant for the subdivision. If the Declarant chooses to use this type of transfer, the determination must be in writing, signed by the attorney, and submitted to DEMLR with this form. ❑ 3. Only the proposed permittee (skip Part D below). In accordance with G.S. 143-214.7(c5) (see also SL 2013-121), this type of transfer is allowed only when all of the following items can be truthfully checked: ❑ a. The proposed permittee is either (select one of the following): ❑ The successor -owner who holds title to the property on which the permitted activity is occurring or will occur; ❑ The successor -owner who is the sole claimant of the right to engage in the permitted activity. ❑ b. The current permittee is (select at least one of the following, but all that apply): ❑ A natural person who is deceased. ❑ A partnership, Limited Liability Corporation, corporation, or any other business association that has been dissolved ❑ A person who has been lawfully and finally divested of title to the property on which the permitted activity is occurring or will occur. ❑ A person who has sold the property on which the permitted activity is occurring or will occur. ❑ Other (please explain): ❑ c. The proposed permittee agrees to the following requirements (all must be selected): ❑ There will be no substantial change in the permitted activity. ❑ The permit holder shall comply with all terms and conditions of the permit until such - time as the permit is transferred. ❑ The successor -owner shall comply with all terms and conditions of the permit once the permit has been transferred. ViAR 0 1 2021 By:— Stormwater Permit Transfer Application Form Page 2 of 7 April 27, 2018 C. SUBMITTAL REQUIREMENTS Please mark 'Y" to confirm the items are included with this form. Please mark X' if previously provided. If not applicable or not available, please mark N/A.: Y 1. A processing fee of five hundred and five dollars ($505.00) per G.S. 143-215.3D(e)(2). Y 2. Two hard copies (with original signatures) and one electronic copy of this completed form and the required items. Y 3. For proposed permittees that are corporations or LLC's, documentation from the NC Secretary of State demonstrating that the proposed permittee is a legal and viable entity able to conduct business in North Carolina. Y 4. If Part B, Items 1 or 3 of this form is selected, the signed and notarized applicable O&M agreement(s) from the proposed permittee, as required by the permit. Y 5. Legal documentation that the property has transferred to the proposed permittee (such as a recorded deed for the property, uncompleted development and/or common areas) or legal documentation demonstrating that the proposed permittee is the sole claimant of the right to engage in the permitted activity. Y 6. If required by the permit and if the project has been built, a signed, sealed and dated certification document from a licensed professional stating that the stormwater management system has been inspected and that it has been built and maintained in accordance with the approved plans. Y 7. A copy of the recorded covenants and deed restrictions, if required by the permit. If the project has been built, documentation that the maximum allowed per lot built -upon area or the maximum allowed total built -upon area has not been exceeded. If the project has not been built, the new owner shall provide a signed agreement to submit final recorded deed restrictions and protective covenants. N/A 8. If transferring under G.S. 143-214.7(c2) (i.e., Part B, Item 2 of this form is selected), documentation verifying that 50% or more of the lots have been conveyed to individuals (not builders). Copies of the deeds of conveyance or a chart listing the lot number, lot address, owner's name, conveyance date and deed book and page number are acceptable. N/A 9. If transferring under G.S. 143-214.7(c5) (i.e., Part B, Item 3 of this form is selected), provide legal documentation supporting the dissolution of the corporation or documentation supporting the current permittee was lawfully and finally divested of title of the property. N/A 10. A copy of the lease agreement if the proposed permittee is the lessee. Y 11. A copy of the pending sales agreement if the proposed permittee is the purchaser. N/A 12. A copy of the development agreement if the proposed permittee is the developer. MAR 0 1 2021 BY:_ Stormwater Permit Transfer Application Form Page 3 of 7 April 27, 2018 D. CURRENT PERMITTEE INFORMATION AND CERTIFICATION Please be sure to provide Email. 1. Current Permit Holder's Company Name/Organization: Park at Village Oaks, LLC 2. Signing Official's Name: Tom Tucker 3. Signing Official's Title: Member -Manager 4. Mailing Address: 315 Friday Drive City: Wilmington State: NC ZIP: 28411 5. Street Address: 315 Friday Drive City: Wilmington State: NC ZIP: 28411 6. Phone: (910) 538-5719 Email: tntucker100(o)gmail.com 1, Tom Tucker, the current permittee, am submitting this application for a transfer of ownership for the above listed stormwater permit under the General Statute and Session Law identified on Page 1 of this application. I hereby notify DEMLR of the sale or other legal transfer of the property/project and/or the stormwater system associated with this permit. I have provided a copy of the following documents to the proposed permittee named in this application form: (select all that apply) ® the most recent permit; ® the designer's certification for each SCM; ® any recorded deed restrictions, covenants, common areas, drainage easements or plats; ® the approved plans and/or approved as -built plans; ® the approved operation and maintenance agreement; ❑ past maintenance records from the previous permittee (where required); ® a copy of the most recent inspection report; I further attest that this application and request for a permit transfer is accurate and complete to the best of my knowledge. I attest that I have provided all of the required items per the law to transfer this permit. I understand that if all required parts of this request are not completed or if all required supporting information and attachments listed above are not included, this request package will be returned as incomplete. I assign all rights and obligations as permittee to the proposed permittee named below. I understand that this request to transfer the permit may ngF¢e roved by the DEA unlessss and until the facility is in compliance with the permit. Signature: ((C/dJ) I/�1''[vi 0— Date: February 2.�/, 2021 a Notary Public for the State of North Carolina, County of New Hanover, do hereby certify that Tom Tucker personally appeared before me this the 04. day of February, 2021, and acknowledge the due execution of the forgoing instrument. 6 - 7 MAR 0 1 2021 BY: Stonnwater Permit Transfer Application Form Page 4 of 7 April 27, 2018 E. PROPOSED PERMITTEE INFORMATION 1. The proposed permittee is the: Property owner (Also complete Part F.) ❑ Home Owners Association (HOA), Property Owners Association (POA), or Unit Owner Association (UOA) (Also complete Part F.) ❑ Lessee - Attach a copy of the lease agreement. Both the lessee and the property owner will appear on Are permit as co-permittees. If the lease is terminated, responsibility for the permit reverts to the property owner. (Also complete Parts F & G.) chaser - Attach a copy of the pending sales agreement. The permit will require submission of a copy he recorded deed after the purchase has taken place. If the purchase agreement is cancelled the mit reverts to the property owner. (Also complete Parts F & G.) ❑ Developer - Attach a copy of the development agreement. Both the developer and the property owner will appear on the permit as co-permittees. If the development agreement is terminated, responsibility for the permit reverts to the property owner. (Also complete Parts F & G.) 2. Proposed permittee name (check one of the following and provide the name): no WE ■ Corporation, LLC, Partnership, Municipality name: PVO Leland LLC HOA I POA I UOA name: Sole Proprietor 3. Proposed permittee contact information: Please be sure to provide Email. a. Signing Official's Name: Pancham Gupta b. Signing Official's Title: Manager of Mesos Capital LLC the Manager of Proposed Permittee c. Mailing Address: 471 N. Broadway, #351 City: Jericho State: NY ZIP: 11753 d. Street Address: 471 N. Broadway, #351 City: Jericho State: NY ZIP: 11753 e. Phone: (516) 495-3148 Email: pancham.qupta@mesoscar)ital.com 4. If there is a Management Entity that manages the property for an HOA, POA or UOA, please provide: Please be sure to provide Email. a. Management Company or Business name: Wellington Advisors. LLC b. Contact Name: Sharon Parker Title: Manager c. Mailing Address: 2121 Eastchester Or # 103 d. City: High Point State: NC ZIP: 27265 e. Phone: (910) 371-0434 Email: Parkatvillageoaks(oi)wellingtonadvisors.com hC tl.r it 'J n,� MAR 0 1 ZR BY Stormwater Permit Transfer Application Form Page 5 of 7 April 27, 2018 F. PROPOSED PERMITTEE CERTIFICATION I, Pancham Gupta , hereby notify the DEMLR that PVO Leland, LLC acquired through sale, the project/property covered by the stormwater management permit and/or the responsibility for constructing and/or operating and maintaining the permitted stormwater management system. I acknowledge and attest that I have received a copy of: (select all that apply): ® the most recent permit; ® the designer's certification for each SCM; ® any recorded deed restrictions, covenants, common areas, drainage easements or plats; ® the approved plans and/or approved as -built plans; ® the approved operation and maintenance agreement; ❑ past maintenance records from the previous permittee (where required); ® a copy of the most recent inspection report; ❑ Check here if the proposed permittee agrees to be the entity responsible for addressing any compliance issues outlined in the Compliance Inspection Report. If checked, the proposed permittee must provide a written document statement, with a "plan of action and schedule" addressed to this office stating that they will bring the project into compliance upon receipt of the transferred permit. This written 'plan of action and schedule" must be received by the Division before the Division will transfer the permit. I have reviewed the permit, approved plans and other documents listed above, and I acknowledge that I will comply with the terms and conditions of the permit. I will operate and maintain the approved stormwater management system pursuant to the requirements listed in the permit and in the operation and maintenance agreement. Signature: 1 Date: February LL, 2021 I, , a Notary Public for the State of MCI A) !PP L , County o N(1SCCt U do hereby certify that Pancham Gupta personally appeared before me this the 11 day of February, 2021, and acknowledge the due execution of the forgoing instrument. Witness my hand and official seal, (Notary Seal) Notary Signature:4(.Q A)�(71( ? KA_ My commission expires I Zl l C) Z KELLY N.EARLEY NOTARY PUBLIC - STATE OF NEW YORK NO. 01 EA6384339 QUALIFIED IN NASSAU COUNTY COMMISSION EXPIRES 12/10/2022 MAR 0 1 2021 1 BY:_� Stormwater Permit Transfer Application Form Page 6 of 7 April 27, 2018 G. PROPERTY OWNER INFORMATION AND CERTIFICATION Fill out this section only if the property owner is different from the proposed permittee. The permit will revert to the property owner if the purchase agreement, development agreement or lease expires or is terminated. Company Name/Organization: Park at Village Oaks LLC Signing Official's Printed Name: Tom Tucker Signing Official's Title: Member -Manager Mailing Address: 315 Friday Drive City: Wilmington State: NC ZIP: 28411 Phone: (910) 538-5719 Email: tntuckerl00(a)gmail. com I, Tom Tucker L2, 1 1 L� hereby certify that Park at Village Oaks, LLC currently owns the property i el ti ied in this permit transfer document and acknowledge that the Proposed Permittee listed in Part F will be purchasing the property. A copy of the purchase agreement and the assignment thereof, which names the party responsible for the construction and/or operation and maintenance of the stormwater system, has been provided with the permit transfer request. I agree to notify DEMLR within 30 days if there are any changes to the purchase agreement and will submit the applicable completed and signed Permit Information Update Form, or Permit Transfer Application Form to address these changes. As the legal property owner, I acknowledge, understand, and agree by my signature below, that the permit will revert to me and I will be responsible for complying with the DEMLR Stormwater permit if the property purchase is cancelled or defaults. I understand that any individual or entity found to be in noncompliance with the provisions of the s ormwater anagement permit or the stormwater rules, is subject to enforcement action as set forth in PQ�e ral Sta e N ) 143,E rticle 21. Signature of the property owner c-/ // Date: February _Z2, 2021 C,&. ,-0- L, 0" 11 (+ 4n S , a Notary Public for the State of North Carolina, County of New Harigv 7'=4 r4Dy certify that Tom Tucker personally appeared before me this the L day of February, 2021, due execution of the forgoing instrument. Witness my hand and official seal, ��P✓ My commission expires 6 - MAQ 01 2021 �,t. Stormwater Permit Transfer Application Form Page 7 of 7 April 27, 2018 Permit No.SW$ O(oOk33 (to be provided by DWQ) State of North Carolina Department of Environment and Natural Resources Division of Water Quality STORMWATER MANAGEMI NF PERMIT APPLICATION FORM WET DETENTION BASIN SUPPLEMENT This fibrin may be photocopied for use as an original DWQ Stonnwater Management Plan Review: A complete stormwater management plan submittal includes an application form, a wet detention basin supplement for each basin, design calculations, and plans and specifications showing all basin and outlet structure details. 1. PROJECT INFORMATION Project Name: Village Oaks Contact Person: Mark N. Hargrove, PE Phone Number: 910-256-9277 For projects with multiple basins, specify which basin this workshcet applies to: elevations Basin Bottom Elevation Permanent Pool Elevation Temporary Pool Elevation areas Permanent Pool Surface Area Drainage Area Impervious Area vohmles Permanent Pool Volume Temporary Pool Volume Forebay Volume other parameters SA/DAl Diameter of Orifice Design Rainfall Design TSS Removal2 Footnotes: ft. (floor of the basin) ft. (elevation of the orifice) ft. (elevation of the discharge structure overflon) 6056 sq. fL (water surface area at the orifice elevation) 2.86 ac. (on -site and off -site drainage to the basin) 1.94 ac. (on -site and off -site drainage to the basin) 11,588 cu. ft. (combined volume of main basin and foreboy) 7,315 cu. ft. (volume detained above the permanent pool) 2,419 eu.ft.(crpproximately20%cftotal vollone) (surface area to drainage area ratio from, DWQ table) in. (2 to 5 day lemporary pool draw -down required) in. % (minimum'5%required) When using the Division SAIDA tables, the correct SAIDA 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 nonstandard table entries. In the 20 coastal counties, the requirement for a vegetative filter may be waived if the wet detention basin is designed to provide 90% TSS removal. The NCDENR BMP manual provides design tables for both 85% TSS removal and 90% TSS removal. Form SWU-102 Rev3.99 Page I of 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, February 1999) and Administrative Code Section: 15 A NCAC 21-1. 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. Applicants Initials INAI§ a. The permanent pool depth is between 3 and 6 feet (required minimum of 3 feet). R1NF� b. The forebay volume is approximately equal to 20% of the basin volume. MNIi c. The temporary pool controls runoff from the design storm event. M�✓%} d. The temporary pool draws down in 2 to 5 days. e. If required, a 30-foot vegetative filter is provided at the outlet (include non -erosive Flow calculations) roA f. The basin length to width ratio is greater than 3: I. /210 g. The basin side slopes above the permanent pool are no steeper than 3: I. '414 h. A submerged and vegetated perimeter shelf with a slope of 6:1 or less (show detail). PO i. Vegetative cover above the permanent pool elevation is specified. MA)A J. A trash rack or similar device is provided for both the overflow and orifice. 4A k. A recorded drainage easement is provided for each basin including access to nearest right-of-way. MPY 1. If the basin is used for sediment and erosion control during construction, clean out of the basin is specified prior to use as a wet detention basin. In NY in. A mechanism is specified which will drain the basin for maintenance or an emergency. (Pond will be pumped clown by mechanical means if required.) HI. WET DETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT 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) O does does not incorporate a vegetated filter at the outlet. This system (check one) O does does not incorporate pretreatment other than a forebay. Form SWU-102 Rev 3.99 page 2 of 4 Maintenance activities shall be performed as follows: After every significant runoff producing rainfall event and at least monthly: a. Inspect the wet detention basin system for sediment accumulation, erosion, trash accumulation, vegetated 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 as designed. 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 (see diagram below). Removed sediment shall be disposed of in an appropriate manner and shall be handled in a manner that will not adversely impact water quality (i.e. stockpiling near a wet detention basin or stream, etc.). 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 3.75 feet in the main pond, the sediment shall be removed. When the permanent pool depth reads 3.00 feet in the forebay, the sediment shall be removed. BASIN DIAGRAM (fill in the blanks) Permanent Pool Elevation 6o Sediment Re oval El. 13.0 75 v -------------- -- Sediment Removal Elevation ��• 15 75ck Bottom Ele ation la.o %-------------=------------------- ---------1-25% ---- Bottom Elevation 1� • FOREBAY MAIN POND 5. Remove cattails and other indigenous wetland plants when they cover 50% of the basin surface. These plants shall be encouraged to grow along the vegetated shelf and Porebay. berm. 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 practical. 7. All components of the wet detention basin system shall be maintained in good working order. Form SWU-102 Rev 3.99 Page 3 of I acknowledge and agree by my signature below that 1 am responsible for the performance of the seven 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. Print name: Tom -fucker, Park at Village Oaks, L.L.C. "Title: Managing Member Address: 315 Priddy Dr., Wilminkton NC, 28411 Plione: 910-538-5719 Date: 0+ Signature:/ - 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. 1, a Notary Public tar the Slate of ounty of !/ do hereby certify that�d, personally appeared before me this 4!!� da of and acknowledge the due 1'" Y'll �'Y4 b cxccution of the forgoing wet detention basin maintenance requirements. Witness my hand and official seal, &TOMIKA Y. STORMS Notary Official Seal Public - North Carolina New Hanover County Comm. Er Tres reb.1,1010 SEAL My commission expires Form SWU-102 Rev 3.99 Page 4 ol'4 c w o_ := � �nM1 'u � o i = �" S r7 �: Perin it No.5 V4 o`33 (to he 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 he pholocopied.for use as an original DWO Stormwater Management Plan Review: A complete stornovater management plan submittal includes an application form, a wet detention basin supplement for each basin, design calculations, and plans and specifications showing all basin and outlet structure details. 1. PROJECT INFORMATION Project Name: Village Oaks Apartments Contact Person: Mark N. Hargrove, PE Phone Number: 910-256-9277 For projects with multiple basins, specify which basin this worksheet applies to: I elevations Basin Bottom Elevation Permanent Pool Elevation Temporary Pool Elevation areas Permanent Pool Surface Area Drainage Area Impervious Area voltnnes Permanent Pool Volume Temporary Pool VOlunte Forebay Volume other parameters SA/DA Diameter of Orifice Design Rainfall Design TSS Removal2 Footnotes: 11.0 it. (floor of the hasin) 160 ft. (elevation of the orifice) 17.1 ft. (elevation of the discharge structure overflou) 6 056 sq. ft (water surface area at the orijice elevation) 2 94 ac. (on -site and off-sile drainage to the basin) 1.91 ac. (on -rile and off site drainage to the hasin) 11,588 cu. ft. (combined volume of main hasin and farebauj) 7,315 cu. ft. (voltane detained above the permanent pool) 9 419 Co. ft. (approximately 20% of total voltane) 4.66 (surface area to drainage area ratio front. DWQ /able) 1.25 in. (2 to 5 day temporary pool dranv-down required) I in. 90 % (minimum 85%required) When using the Division SAIDA tables, the correct SAIDA 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 nonstandard table entries. 2 In the 20 coastal counties, the requirement for a vegetative filter may be waived if the wet detention basin is designed to provide 90% TSS removal. The NCDENR BMP manual provides design tables for both 85% TSS removal and 90% TSS removal. Form SWU-102 Rev 3.99 Page I of 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, February 1999) and Administrative Code Section: 15 A NCAC 2I-1. 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. Applicants Initials a. The permanent pool depth is between 3 and 6 feet (required minimum of 3 feet). �_'-n`N b. The forebay volume is approximately equal to 20% of the basin volume. Oxa µ c. The temporary pool controls runoff from the design storm event. N� d. The temporary pool draws down in 2 to 5 days. w a9 e. If required, a 30-foot vegetative filter is provided at the outlet (include non -erosive flow calculations) Jn A74 f. The basin length to width *ratio is greater than 3: 1. MOW g. The basin side slopes above the permanent pool are no steeper than 3: 1. AN 9 It. A submerged and vegetated perimeter shelf with a slope of 6:1 or less (show detail). NO# —t i. Vegetative cover above the permanent pool elevation is specified. ptpl%h j. A trash rack or similar device is provided I'or both the overflow and orifice. —_ k. A recorded drainage easement is provided for each basin including access to nearest right-of-way. I. If the basin is used for sediment and erosion control during construction, clean out of the basin is specified prior to use as a wet detention basin. M Ny in. A mechanism is specified which will drain the basin for maintenance or an emergency. P6J& 1 be pvn p� d4orrn 6r Mec,k"6 t:a/ Ateast S 1¢- r41v:red HI. WET DETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT 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) 0 does Na does not incorporate a vegetated filter at the outlet. This system (check one) 0 does P does not incorporate pretreatment other than a forebay. Form SWU-102 Rev 3.99 Page 2 of4 Maintenance activities shall be performed as follows: After every significant runoff producing rainfall event and at least monthly: a. Inspect the wet detention basin system for sediment acemnulation, erosion, trash accumulation, vegetated 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 as designed. 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 (see diagram below). Removed sediment shall be disposed of in an appropriate manner and shall be handled in a manner that will not adversely impact water quality (i.e. stockpiling near a wet detention basin or stream, etc.). 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 accummlatcd sediments. 3.75 4- When the permanent pool depth reads feet in the main pond, the sediment shall be removed. When the permanent pool depth reads �4 Ice[ in the forebay, the sediment shall be removed. BASIN DIAGRAM (till in /he blankv) 0 Permanent Pool Elevation 16 Sediment Re oval El. 3• 75 ------ I---o -- - Sediment Removal Elevation I a. 5 75% Bottom Ele ation I a , D % ----------=------------------------------125% ---- BottomElevation ��'� FOREBAY MAIN POND 5. Remove cattails and other indigenous wetland plants when they cover 50% of the basin surface. These plants shall be encouraged to grow along the vegetated shelf and forebay berm. 6. If the basin most be drained for an emergency or to perform maintenance, the flushing of sediment through the emergency drain shall be minimized to the maximum extent practical. 7. All components of the wet detention basin system shall be maintained in good working order. Form SWU-102 Rev 3.99 Page 3 of I acknowledge and agree by my signature below that I am responsible for the performance of the seven maintenance procedures listed above. 1 agree to notify DWQ of any problems with the system or prior to any changes to the system or responsible party. Print name: John Lare, Park at Villaac Oaks, L.L.C. Title: Manahina Member Address: 315 Friday Dr., Wilmington NC, 28411 Phone: 910-686-7188 Date: Signature: Note: The legal I /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. 1, Om' / a Notary Public for the State/of A4-{7 /d��l✓ County of AILG/7Ud� do hereby certify that personally appeared before me this 2 day of ,20d and acknowledge the due execution of the forgoing wet detention basin maintenance requirements. Witness my hand and official seal, TOMIKAY. STORMS } official Seal Notary Public - North Carolina New Hanover County • M Comm, Expires Feb. 1, 2010 SEAL My commission expires Form SWU-102 Rev 3.99 Page 4 of Permit No O MA 0� (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 an application form, a wet detention basin supplement for each basin, design calculations, and plans and specifications showing all basin and outlet structure details. 1. PROJECT INFORMATION Project Name: Village Oaks Apartments Contact Person Mark N. Hargrove, PE Phone Number: 910-256-9277 For projects with multiple basins, specify which basin this worksheet applies to: elevation.% Basin Bottom Elevation 11.0 ft. (floor of the basin) Permanent Pool Elevation 160 ft. (elevation of the orifice) Temporary Pool Elevation 17.0 ft. (elevation of the discharge structure overflou) areas lo`1n,8 �c ob-moo-o� Permanent Pool Surface Area T-T" sq. ft. (water surface area at the orifice elevation) Drainage Area 3_06 ac. (on -site and off -site drainage to the basin) Impervious Area 2.20 ac. (on -site and off -site drainage to the basin) vohnnes Permanent Pool Volume 13,468 cu. 11. (combined volume of main basin crud forebay) Temporary Pool Volume 7,746 cu. It. (volume detained above the permanent pool) Forebay Volume 2 495 cu. ft. (approxirruRely 20% of total volume) other parameters SA/DA' 5.14 (surface area to drainage area ratio from, DWQ !able) Diameter of Orifice 1.25 in. (2 to 5 day temporary pool draw -down required) Design Rainfall 1 in. Design TSS Removal2 90 % (minimum 85% required) Footnotes: When using the Division SAIDA tables, the correct SAIDA 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 nonstandard table entries. In the 20 coastal counties, the requirement for a vegetative filter may be waived if the wet detention basin is designed to provide 90% TSS removal. The NCDENR BMP manual provides design tables for both 85% TSS removal and 90% TSS removal. Form S W U-102 Rev 3.99 Page I of 4 II. REQUIRED ITEMS CHECKLIST 'File following checklist outlines design requirements per the Stormwater Best Management practices Manual (N.C. Department of Environment, llealth and Natural Resources, February 1999) and Administrative Code Section: 15 A NCAC 211. 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 S(ormwater Management Permit Application Form, the agent may initial below. If a requirement has not been met, attach justification. Applicants Initials d?,V' f a. The permanent pool depth is between 3 and 6 feet (required minimum of 3 feet). Marl b. The forebay volume is approximately equal to 20% of the basin volume. YAP c. The temporary pool controls runoff from the design storm event. YM0) d. The temporary pool draws down in 2 to 5 days. SIR e. If required, a 30-foot vegetative filter is provided at the outlet (include non -erosive flow calculations) N?N1i f. The basin length to width ratio is greater than 3: I. M1 g. The basin side slopes above the permanent pool are no steeper than 3: I. prof} h. A submerged and vegetated perimeter shelf with a slope of 6:1 or less (show detail). MN14' i. Vegetative cover above the permanent pool elevation is specified. inA)4 j. A trash rack or similar device is provided for both the overflow and orifice. IJ k. A recorded drainage easement is provided for each basin including access to nearest right-of-way. MNI� I. If the basin is used for sediment and erosion control during construction, clean out of the basin is specified prior to use as a wet detention basin. MNJ} in. A mechanism is specified which will drain the basin for maintenance or an emergency. (Pond will be pumped down by mechanical means if required.) III. WET DETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT "file 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) O does does not incorporate a vegetated filter at the outlet. This system (check one) O does does not incorporate pretreatment other than a forebay. Form SWU-102 Rev 3.99 Page 2 of Maintenance activities shall be performed as follows: After every significant runoff producing rainfall event and at least monthly: a. Inspect the wet detention basin system for sediment accumulation, erosion, trash accumulation, vegetated 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 as designed. 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 (see diagram below). Removed sediment shall be disposed of in an appropriate manner and shall be handled in a manner that will not adversely impact water quality (i.e. stockpiling near a wet detention basin or stream, etc.). 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 3.75 feet in the main pond, the sediment shall be removed. When the permanent pool depth reads 3.00 feet in the forebay, the sediment shall be removed. BASIN DIAGRAM (till in the blanks) Permanent Pool Elevation 16.0 Sediment Re oval El. 3. 0 75 6 ------'------- -- Sediment Removal Elevation 11 % 5 7540 Bottom Ele ation l2.o %--------------------------------------------- f ---- Bottom Elevation f-•0 25% FOREBAY MAIN POND. 5. Remove cattails and other indigenous wetland plants when they cover 50% of the basin surface. These plants shall be encouraged to grow along the vegetated shelf and forebay berm. 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 practical. 7. All components of the wet detention basin system shall be maintained in good working order. Form SWU-102 Rev 3.99 page 3 of I acknowledge and agree by my signature below that I art responsible for the performance of the seven 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. Print name: Tom "fucker. Park at Villaec Oaks, L.L.C. Title: Manaeine Member Address: 315 Friday Dr, Wilmington NC, 28411 Phone: 910-538-5719 Date Signa 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. 1, ,197.46 a Notary unty of f- do hereby cc personally appeared before me this %day of execution of the forgoing wet detention basin maintenance requirements. Witness my hand and official seal, W MIKA Y.STORMS Official Seal Public -North Carolina ew Hanover County mm. Ex Tres Feb. I, 2010 SEAL My commission expires For SWU-102 Rcv 3.99 Page 4 ol'4 z si`z YAMII OT Ira"L Ic::iYil� t anilwcJrlitaN�:1;1�4yt614i" � ,:'�' rinY�) S9vOniFi NyV! NOS j'494Noliq�i.mmo; - Permit No. S W 00 (, 0 (33 (to be provided by DIVQ) 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 pholoc•opied for use as an original DWO Stormwater Management Plan Review: A complete stormwater management plan submittal includes an application form, a wet detention basin supplement for each basin, design calculations, and plans and specifications showing all basin and outlet structure details. 1. PROJECT INFORMATION Project Name: Village Oaks A Contact Person: Mark N. Hargrove, PE Phone Number: 910-256--9277 I'or projects with multiple basins, specify which basin this workshecl applies to: 2 elevations Basin Bottom Elevation Permanent Pool Elevation Temporary Pool Elevation areas Permanent Pool Surface Area Drainage Area Impervious Area vohnnes Permanent Pool Volume Temporary Pool Volume I=orebay V0lunnc other parawelers SA/DAB Diameter of Orifice Design Rainfall Design TSS Rennoval2 Footnotes: It. (floor (? the basin) ft. (elevation of theorfice) R. (elevation of the discharge structure overflon) 6 978 sq. It. (water surface area at the oritice elevation) 3.02 ac. (on -site and qff-site drainage to the basin) 2.15 ac. (on -site and off -rite drainage to the basin) 13,468 cu. ft. (conhbined volume of main basin and firreboy) 7,746 cu. ft. (volume detained above the permanent pool) 2 495 ca. 11. (approximately 20% of lotal volume) 5.09 (surface area to drainage at -ea ratio four, DWQ table) 1.25 in. (110 5 day temporary pool draw -down required) I in. 90 % (minimum85%required) When using the Division SAIDA tables, the correct SAIDA ratio for pernnanent pool sizing should be connputed based upon the actual impervious % and pernnanent pool depth. Linear interpolation should be employed to dcternninc the correct value for nonstandard table entries. In the 20 coastal counties, the requirement for a vegetative filter may be waived if the wet detention basin is designed to provide 90% TSS removal. The NCDL'NR BMP manual provides design tables for both 85% TSS removal and 90% TSS rennoval. Fornn S W U-102 Rcv 3.99 Page I of 4 i H. REQUIRED ITEMS CHECKLIST The following checklist outlines design requirements per the Stormwatcr Best Management Practices Manual (N.C. Department of Environment, 1-Icalth and Natural Resources, February 1999) 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. Applicants Initials /AA a. The permanent pool depth is between 3 and 6 feel (required minimum of 3 feet). Mali b. The forebay volume is approximately equal to 20% of the basin volume. —60 W c. The tcmporary pool controls runoff from the design storm event. .INN d. The temporary pool draws down in 2 to 5 days. Me. If required, a 30-Cool vegetative filler is provided at the outlet (include non -erosive flow calculations) OWN- f. 'file basin length to width *ratio is greater than 3: I. MN14 g. The basin side slopes above the permanent pool are no steeper than 3: I. (AP T h. A submerged and vegetated perimeter shelf with a slope of 6:1 or less (show detail). M104 — i. Vegetative cover above the permanent pool elevation is specified. A#4 j. A trash rack or similar device is provided for both the overflow and orifice. k. A recorded drainage easement is provided for each basin including access to nearest right-of-way. �NM I. If the basin is used for sediment and erosion control during construction, clean out of the basin is specified prior to use as a wet detention basin. m. A mechanism is specified which will drain the basin for maintenance or an emergency. Pout w:ll Ae�un p r,/ clnwrt by At eC-k4#ttC.( M.¢ ws . tF I^ III. WET DETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT 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) O does)) does not incorporate a vegetated filter at the outlet. This system (check one) O does 01 does not incorporate pretreatment other than a forebay. Form SWU-102 Rev 3.99 Page 2 of i Maintenance activities shall be performed as follows: After every significant runoff producing rainfall event and at least monthly: a. Inspect the wet detention basin system for sediment accumulation, erosion, trash accumulation, vegetated 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 as designed. 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 (see diagram below). Removed sediment shall be disposed of in an appropriate manner and shall be handled in a manner that will not adversely impact water quality (i.e. stockpiling near a wet detention basin or stream, etc.). 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. 3,-6 fg- When the permanent pool depth reads --3' feet in the main pond, the sediment shall be removed. 3.0 &— When the permanent pool depth reads A' feet in the forebay, the sediment shall be removed. BASIN DIAGRAM (fill in the blanks) Permanent Pool Elevation Sediment Re Lation 1- • 0 75 0 --- -- Sediment Removal Elevation 25 75% BottomEl2 .o %--------'----=--------------------`---------- ----- BottomElevanon 25% FOREBAY MAIN POND. 5. Rcmove cattails and other indigenous wetland plants when they cover 50% of the basin surface. These plants shall be encouraged to grow along the vegetated shelf and forebay berm. 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 practical. 7. All components of the wet detention basin system shall be maintained in good working order. Form SWU-102 Rev 3.99 page 3 of 4 I acknowledge and agree by my signature below that 1 am responsible For the performance of the seven 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. Print name: John Lare. Park at Villaee Oaks. L.L.C. Title: Managing Member Address: 315 Friday Dr, Wilmington NC, 28411 Phone: 910-686-7188 Date: % — c/-- Signature: Note: The lega)K 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. 1, ��� /YJ5 a Notary Public for the State of County of ^,doo hereby certify thhat O4-) !i/C personally appeared before me this9 day of 1• �eero and acknowledge the due execution of the forgoing wet detention basin maintenance requirements. Witness my hand and official seal, TOM'"Y. STORMS lk �,. O'ficiol Seal Notary Vublic North Carolina New I'overCounty M Comm. Expires Feb. 1, 2010 SEAL My commission expires Form SWU-102 Rev 3.99 Page 4 of 4 ' - • Permit NO.d 4; D'O Ito be provided by DWO) OF W A TF9 O� OG 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 III) must be printed, filled out and submitted along with all of the required information. rroleci name Contact person Phone number Date Drainage area number II DESIGNIINFORMATION Site Characteristics Drainage area 128,177.00 le Impervious area 86,750.00 )ft' % impervious 67.68 % Design rainfall depth 1.00 In Storage Volume: Non -SR Waters Minimum volume required 7,928.00 'i' Volume provided 8,457.00 -ft' Storage Volume: SR Waters 1-yr, 24-hr runoff depth _ in Pre -development 1-yr, 24-hr runoff ft' Post -development 1-yr, 24-hr runoff It Minimum volume required It Volume provided ft, Peak Flow Calculations 1-yr, 24-hr rainfall depth in Rational C, pre -development I(unitless) Rational C, post -development (unitless) Rainfall intensity: 1-yr, 24-hr storm j inlhr Pre -development 1-yr, 24-hr peak flow ift'Isec Post -development 1-yr, 24-hr peak flow :ft'Isec Pre/Post 1-yr, 24-hr peak flow control ft'Isec Basin Elevations Basin bottom elevation 11.00 ft Sediment cleanout elevation 12.25 'ft Bottom of shelf elevation 14.33 ft Permanent pool elevation 16.00 ft SHWT elevation 'It Top of shelf elevation 16.00 It Temporary pool elevation 17.20 If 7 DEC 1 I� Form SW401-Wet Detention Basin-Rev.4 Parts I. & II. Design Summary, Page 1 of 2 Permit No. (to be provided by D WO) Ih DESIGNINFORMATION ; Volume and Surface Area Calculations SA/DA ratio 4.84 (unitless) Surface area at the bottom of shelf If Volume at the bottom of shelf rya Permanent pool, surface area required 6,204.00 Q2 Permanent pool, surface area provided 6,268.00 ft' OK Permanent pool volume 12,067.00 '.ft3 Average depth for SA/DA tables 1.93 it Minimum of 3 it required, Increase depth Surface area at the top of shelf 5,059.00 N2 Volume at the lop of shelf 10,125.00 ft' Forebay volume 2,419.00 ft' Forebay %of permanent pool volume 20.05 % OK Temporary pool, surface area provided 7,863.00 . R2 Drawdown Calculations Treatment volume drawdown time 2.70 days OK Treatment volume discharge rate 0.05 fills Pre -development 1-yr, 24-hr discharge ft'/s Post -development 1-yr, 24-hr discharge ffa/s Additional Information Diameter of orifice 1.25 in Design TSS removal 90 % Basin side slopes 3.00 :1 OK Vegetated shelf slope 6.00 :1 Side Slopes are too steep, maximum 10:1 Vegetated shelf width 10.00 it OK Length of fiowpath to width ratio 3.05 :1 OK Length to width ratio 3.76 :1 OK Trash rack for overflow & orifice? y (Y or N) OK Freeboard provided 2.80 ft OK Vegetated filter provided? n (Y or N) Design must be based on 90%TSS removal Recorded drainage easement provided? y (Y or N) OK Capures all runoff at ultimate build -out? y (Y or N) OK Drain mechanism for maintenance or emergencies y Form SW401-Wet Detention Basin-Rev.4 Pans I. & 11. Design Summary, Page 2 of 2 .. 1 . Permit (to be provided by DM) ®�� O�O� W ATEgOG � f 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 (Pad III) must be printed, filled out and submitted along with all of the required information. IPROIECTxINF.ORMATION?jk; + tS:;o-SS: 3k:� i t,!a'.'', s. L:. s._l .�,( Project name Village Oaks Apartments Contact person Derek M. Roberts. P.E. Phone number (910) 256-9277 Date 16-Dec-08 Drainage area number 2 Site Characteristics Drainage area Impervious area % impervious Design rainfall depth Storage Volume: Non -SR Waters Minimum volume required Volume provided Storage Volume: SR Waters 1-yr, 24-hr runoff depth Pre -development 1-yr, 24-hr runoff Post -development 1-yr, 24-hr runoff Minimum volume required Volume provided Peak Flow Calculations 1-yr, 24-hr rainfall depth Rational C, pre -development Rational C, post -development Rainfall intensity: 1-yr, 24-hr storm Pre -development 1-yr, 24-hr peak Flow Post -development 1-yr, 24-hr peak flow Pre/Post 1-yr, 24-hr peak flow control Basin Elevations Basin bottom elevation Sediment cleanout elevation Bottom of shelf elevation Permanent pool elevation SHWT elevation Top of shelf elevation Temporary pool elevation 130,940.00 ftz 95,540.00 ft2 72.96 % 1.00 in 7,714.00 ft' 7,897.00 ft3 in ft3 It, ft3 ft3 in (unitless) (unitless) inthr ft3lsee ft'/sec ft'Isec 12.25 It 14.33 It 16.00 ft ft 16.00 ft 17.00 ft pCC 1 7 2008 BY: Forth SW401-Wet Detention Basin-Rev.4 Parts I. 8 II. Design Summary, Page i of 2 Permit (to be provided by DWO) 111. DESIGN INFORMATION Volume and Surface Area Calculations SA/DA ratio 5.21 '(unitless) Surface area at the bottom of shelf ftz Volume at the bottom of shelf ft3 Permanent pool, surface area required 6,822.00 ftz Permanent pool, surface area provided 7,183.00 ftz OK Permanent pool volume 14,152.00 113 Average depth for SA/DA tables 1.97 ft Minimum of 3 ft required, Increase depth Surface area at the top of shelf 5,746.00 ftz Volume at the top of shelf 12,080.00 ft3 Forebay volume 2,851.00 ft' Forebay % of permanent pool volume 20.15 % OK Temporary pool, surface area provided 8,712.00 ffz Drawdown Calculations Treatment volume drawdown time 2.70 days OK Treatment volume discharge rate 0.04 fta/S Pre -development 1-yr, 24-hr discharge ffe/s Post -development 1-yr, 24-hr discharge ftl/s Additional Information Diameter of orifice 1.25 in Design TSS removal 90 % Basin side slopes 3.00 :1 OK Vegetated shelf slope 6.00 :1 Side Slopes are too steep, maximum 10:1 Vegetated shelf width 10.00 ft OK Length of flowpath to width ratio 3.00 :1 OK Length to width ratio 3.00 :1 OK Trash rack for overflow 8 orifice? y (Y or N) OK Freeboard provided 2.00 If OK Vegetated filter provided? in (Y or N) Design must be based on 90%TSS removal Recorded drainage easement provided? y (Y or N) OK Capures all runoff at ultimate build -out? y (Y or N) OK Drain mechanism for maintenance or emergencies y Farm SW401-Wet Detention Basin-Rev.4 Paris I. 811. Design Summary, Page 2 of 2 r State Stormwater Management Systems Permit No. SW8 060133 Modification Village Oaks Apartments Stormwater Permit No. SW8 060133 Modification Brunswick CountV Designer's Certification (,Bradford Sed wick P. s a duly registered Engineer in the State of North Carolina, having been authorized to obsery full time) the construction of the project,After construction Village Oaks Apartments for Tom Tucker (Project Owner) he 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 specification: Signature ` ,X Registration Number NC 26378 Date 12/21 /20 SEAL 026378 MAR 0 1202, 1 ,r Page 6 of 7 State Stormwater Management Systems Permit No. SW8 060133 Modification . Certification Requirements. - The drainage area to the system contains approximately the permitted acreage. X 2. The drainage area to the system contains no more than the permitted amount of built -upon area. X 3. All the built -upon area associated with the project is graded such that the runoff drains to the system. X 4. All roof drains are located such that the runoff is directed into the system. X 5. The outlet/bypass structure elevations are per the approved plan. X 6. The outlet structure is located per the approved plans. X 7. Trash rack is provided on the outlet/bypass structure. X 8. All slopes are grassed with permanent vegetation. X 9. Vegetated slopes are no steeper than 3:1. X 10. The inlets are located per the approved plans and do not cause short- circuiting of the system. X 11. The permitted amounts of surface area and/or volume have been provided. X 12. Required drawdown devices are correctly sized per the,approved plans. X 13. All required design depths are provided.' X 14. All required parts of -the system are provided; such as a vegetated shelf, and a forebay. X 15. The required system dimensions are provided per the approved plans_ cc: NCDENR-DWQ Regional Office Brunswick County, Building Inspections NARO 12021. ' BYE Page 7 of 7