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HomeMy WebLinkAboutSW8060121_CURRENT PERMIT_20210723STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO. SW8 (} In o 21 DOC TYPE] CURRENT PERMIT ❑ APPROVED PLANS ❑ HISTORICAL FILE ❑ COMPLIANCE EVALUATION INSPECTION DOC DATE 20 21 0123 YYYYMMDD ROY COOPER Gavmiar DiONNE DELLI-GATTi s+Etarr BRIAN WRENN NORTH CAROLINA Director EnWronmental Qualfry July 23, 2021 SRP-2011-3, LLC Attn: Brian C. Newman, Authorized Representative 601 Brickell Key Drive, Suite 700 Miami, FL 33131 Subject: Permit Renewal State Stormwater Management Permit No. SW8 060121 Grove Landing Brunswick County Dear Mr. Newman: The Wilmington Regional Office received a complete 8 year Stormwater Management Permit Renewal Application for the subject project on July 23, 2021. The Division is hereby notifying you that permit SW8 060121 has been renewed on July 23, 2021 and shall be effective until February 14, 2028. For your records, please find enclosed a renewed, updated, and re -issued permit and a copy of the renewal application. Please keep this permit on file at all times. Please note that the renewed, updated, and re -issued permit does not impose new or different terms; it merely restates some of the previous terns to provide you with a better understanding of your obligations under the permit The renewal and reissuance of this stormwater permit does not imply that the site is currently in compliance with the terms and conditions of this state stormwater permit The plans originally approved on February 14, 2006 and most recently modified on December 14, 2015, will remain in full force and effect in accordance with the regulations set forth in Title 15A NCAC 2H.1000. This permit is subject to the conditions and limitations as specified therein_ Please pay special attention to the conditions listed in this permit regarding the Operation and Maintenance of the BMP(s), recordation of deed restrictions, procedures for changes of ownership, transferring the permit, and renewing the permit. Failure to establish an adequate system for operation and maintenance of the stormwater management system, to record deed restrictions, to transfer the permit, or to renew the permit, will result in future compliance problems. 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 919431-3000, or visit their website at www.NCOAH.com. Unless such demands are made this permit shall be final and binding. If you have any questions, need additional copies of the permit or approved plans, please contact Ashley Smith in the Wilmington Regional Office, at (910) 796-7215 or ashleym.smith@ncdenr.gov. Sincerely, %; Brian Wrenn, Director Division of Energy, Mineral and Land Resources Enclosures: Attachment A — Designer's Certification Form Attachment C — Permitting History Renewal Application Documents DES/ams: \\\Storrnwater\Permits & Projects\2006\060121 HD\2021 07 permit 060121 cc: NCDEQ-DEMLR Wilmington Regional Office North Carolina Department of Environmental Qua ity I Division of Energy. Mine21 and Land Resources Wilmington Regional Office 1 127 Cardinal Drive Extension I Wilmington. North Carofina 28405 rvonmc�nwrw �� 910.796.7215 State Stormwater Management Systems Permit No. SW8 060121 STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENTAL QUALITY DIVISION OF ENERGY, MINERAL AND LAND RESOURCES STATE STORMWATER MANAGEMENT PERMIT HIGH DENSITY DEVELOPMENT In accordance with the provisions of Article 21 of Chapter 143, General Statutes of North Carolina as amended, and other applicable Laws, Rules, and Regulations PERMISSION IS HEREBY GRANTED TO SRP 2011 — 3, LLC Grove Landing Brunswick County FOR THE construction, operation and maintenance of a wet detention pond in compliance with the provisions of 15A NCAC 2H .1000, effective September 1, 1995 (hereafter referred to as the "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 (the "Division" or "DEMLR") and considered an enforceable part of this permit. This permit shall be effective from the date of issuance until February 14, 2029, and shall be subject to the following specified conditions and limitations: I. DESIGN STANDARDS I. This permit is effective only with respect to the nature and volume of stormwater described in the application and other supporting data. 2. This stormwater system has been approved for the management of stormwater runoff as described in Section 1.6 of this permit. The stormwater control has been designed to handle the runoff from 138,718 square feet of impervious area, and does not have any future impervious area available to be allocated. 3. The tract will be limited to the amount of built -upon area indicated on page 2 of this permit, and per approved plans. There is no allotment for future built -upon area at the site. 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 1 of 7 State Stormwater Management Systems Permit No. SW8 060121 The following design criteria have been provided in the wet detention pond and must be maintained at design condition: a. L%7 Drainage Area, acres: Onsite, ft2: Offsite, ft2: Total Impervious Surfaces, ft2: OS Buildings, ft2: OS Parking/pavement, ft2: OS Sidewalks, ft2: Design Storm, inches: Pond Depth, feet: TSS removal efficiency: Permanent Pool Elevation, FMSL: Permanent Pool Surface Area, ft2: Permitted Storage Volume, ft3: Temporary Storage Elevation, FMSL: Controlling Orifice: Permitted Forebay Volume, ft3: Receiving Stream/River Basin: Stream Index Number: Classification of Water Body: II. SCHEDULE OF COMPLIANCE 5.84 254,542 None 138,718 52,720 72,291 13,707 1.0 5.0 90% 16.0 10,907 11,455 16.90 1.50"0 pipe 4,650 UT to Sturgeon Creek / Cape Fear 18-77-1 "C. SW' 1. The stormwater management system shall be constructed in its entirety, vegetated and operational for its intended use prior to the construction of any built -upon surface. 2. During construction, erosion shall be kept to a minimum and any eroded areas of the system will be repaired immediately. 3. The permittee shall at all times provide the operation and maintenance necessary to assure the permitted stormwater system functions at the design condition. The approved Operation and Maintenance Plan must be followed in its entirety and maintenance must occur at the scheduled intervals including, but not limited to: a 5. 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. g. Access to the outlet structure must be available at all times. 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. Decorative spray fountains will not be allowed in the pond because the permanent pool volume is less than 30,000 cubic feet. The facilities shall be constructed, operated and maintained in accordance with the provisions of this permit, the approved plans and specifications, and the supporting documents attached to this permit and on file with the Division. Page 2 of 7 State Stormwater Management Systems Permit No. SW8 060121 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. A modification may be required for those deviations. 8. If the stormwater system was used as an Erosion Control device, it must be restored to design condition prior to operation as a stormwater treatment device, and prior to occupancy of the facility. 9. Access to the stormwater facilities shall be maintained via appropriate easements at all times. 10. The Director may notify the permittee when the permitted site does not meet one or more of the minimum requirements of the permit. Within the time frame specified in the notice, the permittee shall submit a written time schedule to the Director for modifying the site to meet minimum requirements. The permittee shall provide copies of revised plans and certification in writing to the Director that the changes have been made. 11, No person or entity, including the permittee, shall alter any component shown in the approved plans and specifications. Prior to the construction of any modification to the approved plans, the permittee shall submit to the Director, and shall have received approval for modified plans, specifications, and calculations including, but not limited to, those listed below. For changes to the project or SCM that impact the certifications, a new or updated certification(s), as applicable, will be required and a copy must be submitted to the appropriate DEQ regional office upon completion of the modification. a. Any modification to the approved plans and specifications, regardless of size including the SCM(s), BUA, details, etc. b. Redesign or addition to the approved amount of BUA or to the drainage area. C. Further development, subdivision, acquisition, lease or sale of any, all or part of the project and/or property area as reported in the approved plans and specifications. d. Altering, modifying, removing, relocating, redirecting, regrading, or resizing of any component of the approved SCM(s), the stormwater collection system and/or vegetative conveyance shown on the approved plan. e. The construction of any allocated future BUA. f. Adding the option to use permeable pavement or #57 stone within the lots as a permeable surface. The request may require a proposed amendment to the deed restrictions and protective covenants for the subdivision to be submitted and recorded. g. 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. In. Other modifications as determined by the Director. 12. Prior to transfer of the permit, a file review and site inspection will be conducted by Division personnel to ensure the permit conditions have been met and that the project and the on -site stormwater system complies with the permit conditions. Any items not in compliance must be repaired, replaced restored, or resolved prior to the transfer. Records of maintenance activities performed to date may be requested. III. GENERAL CONDITIONS Any individual or entity found to be in noncompliance with the provisions of a stormwater management permit or the requirements of the stormwater rules is subject to enforcement procedures as set forth in NCGS 143 Article 21. Page 3 of 7 State Stormwater Management Systems Permit No. SW8 060121 2. The issuance of this permit does not preclude the permittee from complying with and obtaining any other permits or approvals that are required for this development to take place, as required by any statutes, rules, regulations, or ordinances, which may be imposed by any other Local, State or Federal government agency having jurisdiction. Any activities undertaken at this site that cause a water quality violation or undertaken prior to receipt of the necessary permits or approvals to do so are considered violations of NCGS 143-215.1, and subject to enforcement procedures pursuant to NCGS 143-215.6. 3. If the facilities fail to perform satisfactorily, the permittee shall take immediate corrective actions. This includes actions required by this Division and the stormwater rules such as the construction of additional or replacement on -site stormwater systems. These additional or replacement measures shall receive a permit from the Division prior to construction. 4. Permit Transfer: 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 by the required fee 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. Dissolution of the partnership, corporate, or LLC entity, subject to NCGS 55-14-05 or NCGS 57D-6-07 and 08; C. Bankruptcy, d. Foreclosure, subject to the requirements of Session Law 2013-121; 5. Current Permittee Name or Address Changes: The permittee shall submit a completed "Permit Information Update Application Form" (available on the Division website) to the Division within 30 days 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; 6. The permittee is responsible for compliance with all terms and conditions of this permit until 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 permit. 7. The permittee grants Division Staff permission to enter the property during normal business hours to inspect all components of the permitted project. 8. 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. 9. Approved plans, application documents, supplements, calculations, operation and maintenance agreement, and specifications for this project are incorporated by reference and are enforceable parts of the permit. A copy of this permit, application, supplements, operation and maintenance agreement, and approved plans and specifications shall be maintained on file by the permittee. 10. Unless specified elsewhere, permanent seeding requirements for the on -site stormwater system must follow the guidelines established in the North Carolina Erosion and Sediment Control Planning and Design Manual. 11. The issuance of this permit does not prohibit the Director from reopening and modifying the permit, revoking and reissuing the permit, or terminating the permit for cause as allowed by the laws, rules, and regulations contained in Title 15A NCAC 2H.1000 and NCGS 143-215.1 et.al. 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 15A NCAC 02H.1045(3). Page 4 of 7 State Stormwater Management Systems Permit No. SW8 060121 Permit renewed, updated and reissued this the 23rd day of July 2021. NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION kf"a�hector Division of Energy, Mineral and Land Resources By Authority of the Environmental Management Commission Page 5 of 7 State Stormwater Management Systems Permit No. SW8 060121 Village Landing Stormwater Permit No. SW8 060121 Brunswick County Attachment A Designer's Certification Page 1 of 2 I, , as a duly registered in the State of North Carolina, having been authorized to observe (periodically/ weekly/ full time) the construction of the project, (Project) for (Project Owner) hereby state that, to the best of my abilities, due care and diligence was used in the observation of the project construction such that the construction was observed to be built within substantial compliance and intent of the approved plans and specifications. The checklist of items on page 2 of this form is included in the Certification. Noted deviations from approved plans and specification: Signature Registration Number Date SEAL Page 6 of 7 State Stormwater Management Systems Permit No. SW8 060121 Page 2 of 2 Certification Requirements: 1. The drainage area to the system contains approximately the permitted acreage. 2. The drainage area to the system contains no more than the permitted amount of built - upon area. 3. All the built -upon area associated with the project is graded such that the runoff drains to the system. 4. All roof drains are located such that the runoff is directed into the system. 5. The outlet/bypass structure elevations are per the approved plan. 6. The outlet structure is located per the approved plans. 7. Trash rack is provided on the outlet/bypass structure. & All slopes are grassed with permanent vegetation. 9. Vegetated slopes are no steeper than 3:1. 10. The inlets are located per the approved plans and do not cause short-circuiting of the system. 11. The permitted amounts of surface area and/or volume have been provided. 12. Required drawdown devices are correctly sized per the approved plans. 13. All required design depths are provided. 14. All required parts of the system are provided, such as a vegetated shelf, and a forebay. 15. The required system dimensions are provided per the approved plans. cc: NCDEQ-DEMLR Wilmington Regional Office Page 7 of 7 Attachment C - Permitting History Grove Landing Permit No. SW8 060121 Approval Date permit Action B(MS Version Description of the Changes 2/14/2006 Original Approval 1.0 9/10/2013 Name/Ownership Change 1.1 Village Landing, LLC transferred to SRP 2011-3, LLC The overall shape of the pond changed, but it is still in the same location. The permanent pool elevation and the bottom of the pond elevation remained the same. The impervious area, required pond volume, and the required pond surface area did 12/14/2015 Modification 12 not increase. Therefore, the design storm remained at the previously -permitted design storm, 1.0in. And, since the previous designed used the maximum depth as opposed to the average depth for its design the maximum depth was also allowed in this design. 7/23/2021 Renewal 2.0 Permit Number:.JI�V (to be provided by DWQ) Drainage Area Number: Wet Detention Basin Operation and Maintenance Agreement I will keep a maintenance record on this BMP. This maintenance record will be kept in a log in a known set location. Any deficient BMP elements noted in the inspection will be corrected, repaired or replaced immediately. These deficiencies can affect the integrity of structures, safety of the public, and the removal efficiency of the BMP. The wet detention basin system is defined as the wet detention basin, pretreatment including forebays and the vegetated filter if one is provided. This system (check one): ❑ does ® does not incorporate a vegetated filter at the outlet. This system (check one): ❑ does ® does not incorporate pretreatment other than a forebay. Important maintenance procedures: - Immediately after the wet detention basin is established, the plants on the vegetated shelf and perimeter of the basin should be watered twice weekly if needed, until the plants become established (commonly six weeks). - No portion of the wet detention pond should be fertilized after the first initial fertilization that is required to establish the plants on the vegetated shelf. - Stable groundcover should be maintained in the drainage area to reduce the sediment load to the wet detention basin. - If the basin must be drained for an emergency or to perform maifii fft ace,-th` L flushing of sediment through the emergency drain should be iiruzed'toA maximum extent practical. T "t. DEC 0 8 20i l - Once a year, a dam safety expert should inspect the embankme�ng BY: 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.4 Page I of 4 Permit Number: (to be provided by DWQ) 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 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 cau iEiSi c to st ear s"or the BMP. Algal growth covers over 50% of the area. Consult a pr fessiona'I to ietnove and control _ alv� -.. al rowth. Cattails, phragmites or other invasive plants cover 50% of Remove the plantsts b�g-them-- with pesticide kdo not spray). the basin surface. Form SW401-Wet Detention Basin O&M-Rev.4 Page 2 of 4 r. 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 re air. if applicable) The outlet device Clogging has occurred. Clean out the outlet device. Dispose of the sediment off -site. The outlet device is damaged Repair or replace the outlet device. The receiving water Erosion or other signs of Contact the local NC Division of damage have occurred at the Water Quality Regional Office, or outlet. the 401 Oversight Unit at 919-733- 1786. The measuring device used to determine the sediment elevation shall be such that it will give an accurate depth reading and not readily penetrate into accumulated sediments. When the permanent pool depth reads 3.75 feet in the main pond, the sediment shall be removed. When the permanent pool depth reads 3 feet in the forebay, the sediment shall be removed. Sediment Removal Bottom BASIN DIAGRAM (fill in the blanks) 17 Permanent Pool Elevation 16 13 Pe manen Pool --------------- Volume Sediment Removal Elevation 12.25 Volume 12 -ft Min. -------------------------- ---- ----------- ------ Sediment Bottom Elevation I 1 1-ft r Storage Sedimei Storage FOREBAY MAIN PO �9 11 DEC 0 8 2015 BY: Form SW401-Wet Detention Basin O&M-Rev.4 Page 3 of 4 Permit Number: (to be provided by DWQ) I acknowledge and agree by my signature below that I am responsible for the performance of the maintenance procedures listed above. I agree to notify DWQ of any problems with the system or prior to any changes to the system or responsible party. Project name:GROVE LANDING BMP drainage area number: Print name: She ;Ae rn Date: t � �-r, \ , C 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. Co rv, PCJ7, e County of a Notary Public for the State of do hereby certify that personally appeared before me this 124 day of P c)\tp_ .t (L ?�t� , and acknowledge the due execution of the forgoing wet l etentio basin maintenance requirements. seal, SEAL Witness my hand and official MATTHEW A. SAINSBURY NOTABYPUBLIC Iq WCOMMISSION EXPIRES FEB, 18, _ , _ E G E �." 7V�%� E DEC 0 8 20115 My commission expires ��l� Form SW401-Wet Detention Basin O&M-Rev.4 Page 4 of 4 )FM111 LJS! ONLY ' Date Releivedl Fee Paid, Permit Number ' -3 Q --tP 1a72 1W n 05 0601 �2( NC DEQ Division of Energy, Mineral and Land Resources t�CE6VE STATE STORMWATER: JUL 2 3 2n2l PERMIT RENEWAL APPLICATION FORM In accordance with 15A NCAC 2H.1045(3), the current permit holder shall renew their high density permit 180 days prior to its expiration. Renewed permits are valid for a period of 8 years per Session Law 2011-398 (SB 781) Section 60.(c). This application form is for permit renewals only. A. PROJECT INFORMATION 1. State Stormwater Permit Number: SW8 060121 2. Project name: Grove Landing 3. Project street address: 110 Shady Grove Lane City: L 28451 County: Brunswick ZIP : 4. What, if any, changes have been made to the project as permitted? If the project has changed from the original approved plans, please complete SWU-101 fora Major Modification or Minor Modification Application form available at. https'//deg.nc.gov/about/divisions/energy- min eral-land-resources/ene rgy-mi nera Hand-rules/stormwater-orcg ram/post-construction. B. PERMITTEE INFORMATION If changes to the permittee or project name have been made, please complete either the Permit Update form or the Permit Transfer form available at: https://deg nc gov/about/divisions/energy-mineral-land- resources/energy-mineral-land-rules/stormwater-program/post-construction. State Stormwater Permits do not automatically transfer with the sale of the property. 1. Current Permit Holder's Company Name/Organization: SRP 2011-3, LLC a;?-- 2. Sig,Cing Official's Name: Brian C. Newman 3. Signing Official's Title: Authorized Person 4. Mailing Address: 601 Brickell Key Drive. Suite 700 � City: Miami State: FL ZIP: 33131 5. Street Address: 601 Brickell Key Drive, Suite 700 City: 6. Phone: (203) 993-6253 Email: ismith(o)shelvingrock. com FL ZIP: 33131 Stormwater Permit Renewal Form Page 1 of 3 May 11, 2018 C. SUBMITTAL REQUIREMENTS Submit the application package to the appropriate DEMLR Regional Office (Coastal, SA Waters) or DEMLR Central Office (Urbanizing Areas Ph 2, USMP, Non -Coastal HQW/ORM. Only applications packages that include all required items listed below will be accepted and reviewed. Initial each item below to indicate that the required information is provided in the application package: 1. A permit application processing fee of $505.00 payable to NCDEQ. 2. One original signed hard copy and one electronic copy of this completed form. The signing official named on this application to represent the current permittee must meet one of the following: a. Corporation — a principle executive officer of at least the level of vice-president, b. Limited Liability Company (LLC) — a manager or company official as those terms are defined in G.S. 57D "North Carolina Limited Liability Company Act;" c. Public Entity — a principal executive officer, ranking official, or other duly authorized employee; d. Partnership or limited partnership — the general partner; e. Sole proprietor; or f. Letter of authorization signed by one of the signatories noted in a — e above authorizing the signature of another entity. 3. One hard copy and one electronic copy of recorded documents required by the original permit that have not yet been received by DEMLR, including: deed restrictions, protective covenants, condominium/planned community declaration and easements. If the project has been built, include documentation that the maximum BUA per lot or maximum total BUA has not been exceeded. If the project has not been built, include a signed agreement that the final recorded deed restrictions and protective covenants will be submitted at a later date. 4. O&M Agreements, Please select one: ® I have a copy of the current recorded O&M Agreement for all SCMs, and I will continue to keep this on file with the permit; or ❑ I do not have a copy of the current recorded O&M Agreement for all SCMs and am requesting a copy be sent to me. I agree to keep this on file with the permit. 5. Designer Certifications, Please select one: ❑ A copy of the certification(s) confirming that the project was built in accordance with the approved plans have been previously provided to the Division; or ❑ A copy of the certification(s) confirming that the project was built in accordance with the approved plans are enclosed; or ® The project has not yet been built. 6. [IF APPLICABLE) If the project has been built, one original hard copy and one electronic copy of a signed, sealed, and dated letter from a licensed professional stating that the SCMs have been inspected, and that they have been built and maintained in accordance with the permit. L/ 7. (IF APPLICABLE) When the permittee is a corporation or a limited liability corporation (LLC): Provide one hard copy and one electronic copy of documentation from the INC Secretary of State, or other official documentation, which supports the titles and positions held by the persons listed in Section C.2 per 15A NCAC 2H. 1043(3)(b). httos://www.sosnc.gov/online services/search/by title/ Business Registration ­_GE'vE' JUL 2 3 2021 Stormwater Permit Renewal Application Form Page 2 of 3 May 11, 2018 D. PERMITTEE'S CERTIFICATION %/rQf-/J C 'VEU-)in wci the person legally responsible for the permit, certify that I have a copy of the Permit and O&M Agreement on site (or I will obtain a copy and it will be kept on site), that I am responsible for the performance of the maintenance procedures, and the site has been and will be maintained according to the O&M Agreement and approved plans. I agree to notify DEMLR of any problems with the SCMs or built -upon area and to submit the proper forms to modify or transfer the permit prior to any changes to the project, SCMs, or ownership. All information provided on this permit renewal application is, to the best of my knowledge, correct aadoemplete. NOTARIZATION: Date: P7-)-L - L0i( a Notary Public for the State of County of do hereby certify that personally appeared before me this the day of =CL� 20 2 ( , and acknowledge the due execution of the forgoing instrument. Witness my hand and official seal, (Notary Seal) Notary Signature: �J` My commission expires -7— ZJ� MATTHEW A. SAINSBURY Notary Public, State of Connecticut My Commission Expires Feb. 28, 2024 JUL, 2 3 2021 Stormwater Permit Renewal Application Form Page 3 of 3 May 11, 2018 Perinit No. / (to be provided by DJVQ) 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 DWO Stormwater Management Plan Review: A complete stonnwaler 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: Contact Person: Garry S. Pape. PE Phone Number: 910-256-9277 For projects with multiple basins, specify which basin this worksheet applies to: elevations Basin Bottom Elevation Permanent Pool Elevation Temporary Pool Elevation areas Permanent Pool Surface Area Drainage Area hnpervious Area voltanes Permanent Pool Volume Temporary Pool Volume Forebay Volume other parameters SA/DAn Diameter of Orifice Design Rainfall Design TSS Removal2 Footnotes: 11.0 ft. 160 ft. 16.90 ft. 10 854 sq. 11. 5 70 ac. 3.35 ac. 21,458 cu. it. 12003 cu. ft. 4,412 cu. It. 5.18 1.5 in. 1 0 in. 90 % (floor of the basin) (elevation of the orifice) (elevation of the discharge structure overflon) (crater snnface area at the orifice elevation) (on -site and off -rite drainage to the basin) (on -site and off -site drainage to the basin) (combined volume of main basin andforeba)) (volume detained above the permanent pool) (approximately 20% of total volunne) (surface area to &-ainage area ratio from, DWQ table) (2 to 5 day tennpormy pool dran -down required) (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. 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 1 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 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. The permanent pool depth is between 3 and 6 feet (required minimum of 3 feet). The forebay volume is approximately equal to 20% of the basin volume. The temporary pool controls runoff from the design storm event. The temporary pool draws down in 2 to 5 days. If required, a 30-foot vegetative filter is provided at the outlet (include non -erosive flow calculations) The basin length to width *ratio is greater than 3: 1. The basin side slopes above the permanent pool are no steeper than 3: 1. A submerged and vegetated perimeter shelf with a slope of 6:1 or less (show detail). Vegetative cover above the permanent pool elevation is specified. A trash rack or similar device is provided for both the overflow and orifice. A recorded drainage casement is provided for each basin including access to nearest right-of-way. Z�W 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. in. A mechanism is specified which will drain the basin for maintenance or an emergency. 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) 0 does" does not incorporate a vegetated filter at the outlet. This system (check one) 0 does does not incorporate pretreatment other than a forebay. Form S W U-102 Rev 3.99 Page 2 of 4 woe Scog 6)A0/z/ Maintenance activities shall be performed/as follows: I. After every significant runoff producing rainfall event and at least monthly: a. Inspect the wet detention basin system for sediment accumulation, erosion, Lash 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 (' Z S feet in the main pond, the sediment shall be removed. When the permanent pool depth reads t • 0 feet in the forebay, the sediment shall be removed. BASIN DIAGRAM (fill in the blanks) 0 Permanent Pool Elevation 1 4.00 Sediment Re oval El. 13.OD 75 11. 00 -------------- -- Sediment Removal Elevation 75% Bottom Ele ation (-0 %--- ------------------------------------------ ----- Bottom Elevation I �• DO 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 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: Julie H. Lancaster Title: Member Manager Address: 816 Forest Hills Drive, Wil Phone: 910-617-6644 Date: l • 20 ' C)U Signature: NC 28403 Note: The ally 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, C. k'V-N"k {\,` �01� a Notary Public for the State of A%0� " Iva. County of do hereby certify that �NC, L'-\ ,SA-QA— personally appeared before me this 2A1'�\ day of San and acknowledge the due execution of the forgoing wet detention basin maintenance requirements. Witness my hand and official seal, SEAL My commission expires �n\��,,, v Z. (v 200 9 Form SWU-102 Rev 3.99 Page 4 of 4 (to be provded by Vw ) AGA0aOF' m NCDENR C Y " STORMWATER MANAGEMENT PERMIT APPLICATION FORM 401 CERTIFICATION APPLICATION FORM WET DETENTION BASIN SUPPLEMENT This form must be filled out, printed and submitted. The Required Items Checklist (Part ill) must be printed, filled out and submitted along with all of the required information. I:P,R0JECT,INFORMA710Ns.w1 tfi a,. - r �c.s:ia:. ,.-s.'^"4-.'a' �...»`>.z> ,T`>.*' Project name - GROVE LANDING.,: Contact person -' HOWARD RESNIK, PE- - Phone number 9107914441 Dale ,12f7R015 - - Drainage area number1. II;DESIGN INFORMATION. _+.e". Site Characteristics Drainage area ». 254,552rth Impervious area, post -development .138,718 R° % impervious 54.49 % Design rainfall depth ,:- 1.0 in Storage Volume: Non -SA Waters Minimum volume required ,11,449 ff Volume provided 11455Rs OK, volume provided is equal to or in excess of volume required. Storage Volume: SA Waters 1.5'runoff volume =:.� fit Pre -development 1-yr, 24-hr runoff -'°- its Post -development 1-yr, 244u runoff "",R1 Minimum volume required to Volume provided ,'; R° Peak Flow Calculations Is the prelpost control of iha 1yr 24hr storm peak flow required? 1-yr, 24-hr rainfall depth N (Y or N) in r. �, &,.+' , Rational C,pre-development Rational C, post -development :'(unitless) �:(unitiess) i1 ��C O $ 201� Rainfall intensity: l-yr, 24-hr storm -; inlhr Pre -development 1-yr, 24-hr peak flow fOlsec Post -development 1-yr, 24-hr peak flow Rr/sec BY: PrelPost 1-yr, 24-hr peak flow control R Isec Elevations Temporary pool elevation;*16.90 fmsl Permanent pool elevation -- 16.00 fmsl SHWT elevation (approx. at the pen. pool elevation) ''-fmsl Top of 10fl vegetated shelf elevation fmsl Bottom of 1 OR vegetated shelf elevation : fmsl Sediment cleanout, top elevation (bottom of pond) -12.25 fmsl Sediment cieanout, bottom elevation 11.00 fmsl Sediment storage provided 1.25 it Is there additional volume stored above the state -required temp poop N . (Y or N) Elevation of the top of the additional volume : ° fmsl Form SW401-Wet Detention Basin-Rec9.4118112 Pens I. a 11. Design Summary, Page 1 of 2 (IobepmNdedbyDWQ) Ili&DESIGN'. INF.ORMATION':.. ,5 • ,-: 4k,r "`,a"��--.- ,4-' _V'v .:.sT,, Surface Areas Area, temporary pool14,549 _ ft Area REQUIRED, permanent pool 9,826 ft SAIDA ratio - - 3.86(unitless) Area PROVIDED, permanent pool, Ar,,,,�, _'' 10,907.ttr OK Area, bottom of 10fl vegetated shelf, A. era fl Area, sediment cleanout, top elevation (bottom of pond), A.. Volumes Volume, temporary pool .;- 11,455 fl3 OK Volume, permanent pool, V,,,,,,ss ;".- `-: 23,2331fl3 Volume, forebay(sum of forebays if more than one forebay) r."' - ..: 4.650; ft' Forebay % of permanent pool volume 20.0% % OK SAIDA Table Data Design TSS removal _ Coastal SAIDA Table Used? " Y - ;(Y or N) Mountain/Piedmont SAIDA Table Used? ' s:N,, ;-'(Yor N) SAIDA ratio 3.86 (uni0ess) Average depth (used in SAIDA table): _ Calculation option 1 used? (See Figure 10-2b) _ ' _ N-`(Y or N) Volume, permanent pool, Vp, , , 23,233 fl3 Area provided, permanent pool, A , 10,907 f? Average depth calculated 5.00 ft OK Average depth used in SAIDA, d„, (Round to nearest 0.5ft) -- 5.0 It OK Calculation option 2 used? (See Figure 10-2b) I N.. - (Y or N) Area provided, permanent pool, An,,,,-y,,, 10,907 If Nea, bottom of 10fl vegetated shelf, A,_,,, ft' Area, sediment Ueanout, top elevation (bottom of pond), A,,. 1tr "Depth" (distance b/w bottom of 10ft shelf and top of sediment) -12.25 ft Average depth calculated : It Average depth used in SAIDA, d„, (Round to down to nearest 0.511) ft Drawdown Calculations Drawdown through orifice? Y `; (Y or N) Diameter of orifice (if circular) 1 50'in Area of orifice (if -non -circular) -' in r Coefficient of discharge (CD) 060 (unifless) DEC 0 8 26ij 1p@ Driving head (H.) t :'- 0.30 It Drawdown through weir? - IN, .'(Y or N) -7.(unitless) BY' Weir type Coefficient of discharge (C,) .'-(unifless) Length of weir (L) If Driving head (H) t ft Pre -development 1-yr, 24-hr peak flow ' '' =`fl3lsec Past -development 1-yr. 24-hr peak flow A Isec Storage volume discharge rate (through discharge orifice or weir) D.03'11Isec Storage volume discharge rate greater than pre-dev. 1y24hr. Storage volume drewdown time i- ' 410 days OK, draws down in 2-5 days. Additional Information Vegetated side slopes 3':1 OK Vegetated shelf slope ° — .6':1 Insufficient shelf slope. Vegetated shelf width _ ' 10.0 ft OK Length of flowpath to width rate = 3 :1 OK Length to width ratio I 3.0':1 OK Trash rack for overflow 8 orifice? Y : -:, (Y or N) OK Freeboard provided Yfl OK Vegetated filter provided? ''N ':' `.-(Yor N) OK Recorded drainage easement provided? S ,:-Y - "(Y or N) OK ' Capums all runoff at ultimate buildrout? -;'a. Y :-.(Y or N) OK Drain mechanism for maintenance or emergencies is: PORTABLE PUMP, Form SW 401-Wet Detandon Basin-Rev.9411e/12 Parts L b It. Design Summary, Page 2 of 2 Permit No. (to be provided by OW ) 111:iREQUIRED'ITEMSCHECKLIST, Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a requirement has not been met, attach justification. Pagel Plan Initials Sheet No. 15fi if 1. Plans (1" - 50' or larger) of the entire site showing: - Design at ultimate build -out, F O E W E - Off -site drainage (if applicable), l - Delineated drainage basins (include Rational C coefficient per basin); DEC 0 8 209� - Basin dimensions, - Pretreatment system, u - High flow bypass system, BY: - Maintenance access, - Proposed drainage easement and public right of way (ROW), - Overflow device, and - Boundaries of drainage easement. 2. Partial plan (1" = 30' or larger) and details for the wet detention basin showing: - Outlet structure with trash rack or similar, - Maintenance access, - Permanent pool dimensions, - Forebay and main pond with hardened emergency spillway, - Basin cross-section, - Vegetation specification for planting shelf, and - Filter strip. �l L 3. Section view of the wet detention basin (1" = 20' or larger) showing: - Side slopes, 3:1 or lower, - Pretreatment and treatment areas, and - Inlet and outlet structures. r 4. If the basin is used for sediment and erosion control during construction, clean out of the basin is specified on the plans prior to use as a wet detention basin. G%r(c r 5. A table of elevations, areas, incremental volumes & accumulated volumes for overall pond and for forebay, to verify volume provided. Q , re• 1 6. A construction sequence that shows how the wet detention basin will be protected from sediment until the entire drainage area is stabilized. N, IP, l� 7. The supporting calculations. u, //• 8. A copy of the signed and notarized operation and maintenance (0&M) agreement. 9. A copy of the deed restrictions (if required). J11k 10. A soils report that is based upon an actual field investigafion, soil borings, and infiltration tests. County soil maps are not an acceptable source of soils information. Form SW401-Wet Detention Basin-Rev.e4/18/12 Part III. Required Items Checklist, Page 1 of 1