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HomeMy WebLinkAboutSW8080653_CURRENT PERMIT_20210601STORMWATER DIVISION CODING SHEET POST —CONSTRUCTION PERMITS PERMIT NO. SW8 0%01P53 DOC TYPE 'r� CURRENT PERMIT ❑ APPROVED PLANS ❑ HISTORICAL FILE ❑ COMPLIANCE EVALUATION INSPECTION DOC DATE 2021 C) sy 01 YYYYMMDD I ROY COOPER Covernnr DIONNE DELLI-GATTI Secretary BRIAN WRENN Dtrecror June 1, 2021 Marine Corps Base Camp Lejeune Attn: Neal Paul, Deputy Public Works Officer 1005 Michael Road Camp Lejeurre, NC 28547 NORTH CAROLINA Envtronmenra!Qualtty Subject: Permit Renewal State Stormwater Management Permit No. SW8 080653 MCAS New River Aircraft Maintenance Hanger Onslow County Dear Mr. Paul: Effective August 1, 2013 the State Stormwater program has been transferred from the Division of Water Quality (DWQ) to the Division of Energy, Mineral and Land Resources (DEMLR). All previous references to DWQ will remain in older stormwater permits issued prior to August 1, 2013 until they are modified. Please note that this permit will now reference DEMLR as the Division responsible for issuance of the permit. The Wilmington Regional Office received a complete 8 year Stormwater Management Permit Renewal Application for the subject project on May 17, 2021. The Division is hereby notifying you that permit SW8 080653 has been renewed on June 1, 2021, and shall be effective until December 30, 2029. 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 November 19, 2008 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 (OAR). The written petition must conform to Chapter 150B of the North Carolina General Statutes, and must be filed with the OAH within thirty (30) days of receipt of this permit. You should contact the OAH with all questions regarding the filing fee (if a filing fee is required) and/or the details of the filing process at 6714 Mail Service Center, Raleigh, NC 27699-6714, or via telephone at 919-431-3000, or visit their website at www.NCOAH.com. Unless such demands are made this permit shall be final and binding. If you have any questions, 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, C 9-W Brian Wrenn, Director Division of Energy, Mineral and Land Resources Na®� ~- urc North Carolina Department of Environmental Quality I Division of Energy. Mineral and Land Resoes Wilmington Regional ice 1127 Cardinal Drive Extension I Wilmington. North Carolina 28405 mew�'==arrm.r� 910.796.7215 IN Enclosures: DES/ams: cc: Attachment C — Permitting History Renewal Application Documents \\\Stormwater\Permits & Projects\2008\080653 HD\2021 06 permit 080653 NCDEQ-DEMLR Wilmington Regional Office State Storrnwater Permit No. SW8 070831 Page 2 of 2 ®VR �J� WiNorth Carolina Department of Environmental Quality I Division of Energy, Mineral and Land Resources lmington Regional Office 1 127 Cardinal Drive Extension I Wilmington. North Carolina 28405 'wnrH cnncuNn ae.urawe,,..imq 910.796.7215 State Stormwater Management Systems Permit No. SW8 080653 STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENTAL QUALITY DIVISION OF ENERGY, MINERAL AND LAND RESOURCES STATE STORMWATER MANAGEMENT PERMIT HIGH DENSITY COMMERCIAL DEVELOPMENT In accordance with the provisions of Article 21 of Chapter 143, General Statutes of North Carolina as amended, and other applicable Laws, Rules, and Regulations PERMISSION IS HEREBY GRANTED TO USMCB Camp Lejeune MCAS New River Aircraft Maintenance Hanger (P-526/P-651) Campbell Street, Camp Lejeune, Onslow County 161:4=0 construction, operation and maintenance of a wet detention pond and filter strip in compliance with the provisions of Session Law 2006-246 and 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 (the "Division" or "DEMLR") and considered an enforceable part of this permit. This permit shall be effective from the date of issuance until December 30, 2029, and shall be subject to the following specified conditions and limitations: I. DESIGN STANDARDS This permit is effective only with respect to the nature and volume of stormwater described in the application and other supporting data. This stormwater system has been approved for the management of stormwater runoff as described in Section 1.7 and 1.8 of this permit. The stormwater controls have been designed to handle the runoff from a total of 180,525 square feet of impervious area. The tract will be limited to the amount of built -upon area indicated in Section 1.7 and 1.8 on page 3 of this permit, and per approved plans. 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. 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 6 State Stormwater Management Systems Permit No. SW8 080653 6. The built -upon areas associated with this project shall be located at least 30 feet landward of all perennial and intermittent surface waters. A 30 foot filter strip has been provided for the 1,731 square feet of built -upon area added to the hanger parking apron and must be maintained at design condition 8. The following design criteria have been provided in the wet detention pond and must be maintained at design condition: a. Drainage Area, acres: 8.43 Onsite, ft2: 355726 Offsite, ft2: 11296 b. Total Impervious Surfaces, ft2: 178,794 Buildings, ft2: 73,774 Roads/Parking, ft2: 101,481 Sidewalk & Concrete, ft2: 1,729 Offsite, ft2: 1,810 c. Average Pond Design Depth, feet: 3.08 d. TSS removal efficiency: 90% e. Design Storm: 1.5" f. Basin Bottom Elev., FMSL: 5.0 g. Sediment Cleanout Elev., FMSL: 6.0 h. Permanent Pool Elevation, FMSL: 10.0 i. Permanent Pool Surface Area, ft2: 36,797 j. Storage Elevation, FMSL: 11.4 k. Permitted Storage Volume, ft3: 58,767 I. Predevelopment 1-yr 24-hr discharge rate, ft3/s: 14.77 m. Controlling Orifice: 2"0 pipe n. Post development treatment volume discharge rate, ft"s: 0.10 o. Permanent Pool Volume, ft3: 103,290 p. Forebay Volume, ft3: 20,995 q. Maximum Fountain Horsepower: 1/3 r. Receiving Stream / River Basin: New River / White Oak s. Stream Index Number: 19-(15.5) t. Classification of Water Body: "Sc, NSW' II. SCHEDULE OF COMPLIANCE 1. The stormwater management system shall be constructed in its entirety, vegetated and operational for its intended use prior to the construction of any built -upon surface. 2. During construction, erosion shall be kept to a minimum and any eroded areas of the system will be repaired immediately. Page 2 of 6 State Stormwater Management Systems Permit No. SW8 080653 3. The permittee shall at all time provide the operation and maintenance necessary to assure the permitted stormwater system functions at the design condition. The approved Operation and Maintenance Plan must be followed in its entirety and maintenance must occur at the scheduled intervals including, but not limited to: a. Semiannual scheduled inspections (every 6 months). b. Sediment removal. C. Mowing and re -vegetation of slopes and the vegetated filter strip. 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, level spreader, filter strip, catch basins and piping. q. Access to the outlet structure must be available at all times. 4. Records of maintenance activities must be kept for each permitted BMP. The records will indicate the date, activity, name of person performing the work and what actions were taken. 5. Decorative spray fountains are allowed in the pond, 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 main pond, away from the shoreline. f.. The maximum horsepower for a fountain in this pond is 1/3 horsepower. 6. The permittee shall submit to the Division an annual summary report of the maintenance inspection records for each BMP. The report shall summarize the inspection dates, results of the inspections, and the maintenance work performed at each inspection. Access to the stormwater facilities shall be maintained via appropriate easements at all times. 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. 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. 10, 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. Page 3 of 6 State Stormwater Management Systems Permit No. SW8 080653 11. 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. 12. 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. 13. 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 1. 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. 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. Page 4 of 6 State Stormwater Management Systems Permit No. SW8 080653 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 5 of 6 State Stormwater Management Systems Permit No. SW8 080653 Permit renewed, updated and reissued this the 1 st day of June 2021. NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION .j. nan Wrenn, Uirector Division of Energy, Mineral and Land Resources By Authority of the Environmental Management Commission Page 6 of 6 Attachment C - Permitting History MCAS New River Aircraft Maintenance Hangar P 526 P65 Permit No. SW8 080653 Approval Date Permit Action BIMS Version Description of the Changes 11/19/2008 Original Approval 1.0 6/1/2021 Renewal 2.0 BASH MITIGATION —STORMWATER PLANTINGS OPERATION AND MAINTENANCE AGREEMENT ADDENDUM The original operation and maintenance agreement for SW8 080653_ will be followed with the addition of this addendum. Important operation and maintenance procedures: • Immediately following all scheduled plantings, the plants will be watered twice weekly if needed until the plants become established; • No fertilization of plants will occur after the first initial fertilization; • Stable ground cover will be maintained in the drainage area to reduce the sediment load to the wet detention basin; The stormwater treatment measure(s) associated with SW8080653 will be inspected once a month and within 24 hours after every storm event greater than 1.5 inches (Coastal County). Records of operation and maintenance will be kept in a known set location and will be available upon request. Inspection activities shall be performed as follows in addition to original inspection activities listed on the operation and maintenance agreement associated with SW8080653. BMP element: Potential problems: How I will remediate the problem: The perimeter of the Bare soils and/or erosive gullies Regrade, backfill, compact and wet detention basin have formed permanently stabilize, as needed, all bare/eroded areas Vegetation is too short or too Maintain grassy/leafy vegetation at a long height of approximately six inches with the exception of the pilot project plantings; Determined trees and shrubs may grow over six inches Tree/Shrub plantings Best professional practices show Prune according to specific plant that pruning is needed to requirements maintain optimal plant health Plants are dead, diseased or Determine the source of the problem: dying 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 — DEC 2 3 2011 BY: =1 Tree stakes/wires are present six Remove tree stakes/wires months after planting Ponds can't be accessed for Work over the tops of the shrubs or sedimentation removal or other remove tree/shrub planting and replace required maintenance them after pond sedimentation removal or other required maintenance is complete Print name: Mr. Carl Baker Title: Deputy Public Works Officer Address: 1005 Michael Street, Camp Lejeune, NC Phone: 910-451-2213 Signature: /; 4L Date: -..OIL- k.l BASH MITIGATION —STORMWATER PLANTINGS OPERATION AND MAINTENANCE AGREEMENT ADDENDUM The original operation and maintenance agreement for SW8 960509 will be followed with the addition of this addendum. Important operation and maintenance procedures: • Immediately following all scheduled plantings, the plants will be watered twice weekly if needed until the plants become established; • No fertilization of plants will occur after the first initial fertilization; • Stable ground cover will be maintained in the drainage area to reduce the sediment load to the wet detention basin; The stormwater treatment measure(s) associated with SW8960509 will be inspected once a month and within 24 hours after every storm event greater than 1.5 inches (Coastal County). Records of operation and maintenance will be kept in a known set location and will be available upon request. Inspection activities shall be performed as follows in addition to original inspection activities listed on the operation and maintenance agreement associated with SW8960509. BMP element: Potential problems: How I will remediate the problem: The perimeter of the Bare soils and/or erosive gullies Regrade, backfill, compact and wet detention basin have formed permanently stabilize, as needed, all bare/eroded areas Vegetation is too short or too Maintain grassy/leafy vegetation at a long height of approximately six inches with the exception of the pilot project plantings; Determined trees and shrubs may grow over six inches Tree/Shrub plantings Best professional practices show Prune according to specific plant that pruning is needed to requirements maintain optimal plant health Plants are dead, diseased or Determine the source of the problem: dying 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 Tree stakes/wires are present six Remove tree stakes/wires months after planting Ponds can't be accessed for Work over the tops of the shrubs or sedimentation removal or other remove tree/shrub planting and replace required maintenance them after pond sedimentation removal or other required maintenance is complete BASH MITIGATION —STORMWATER PLANTINGS OPERATION AND MAINTENANCE AGREEMENT ADDENDUM The original operation and maintenance agreement for SW8 090117 will be followed with the addition of this addendum. Important operation and maintenance procedures: • Immediately following all scheduled plantings, the plants will be watered twice weekly if needed until the plants become established; • No fertilization of plants will occur after the first initial fertilization; • Stable ground cover will be maintained in the drainage area to reduce the sediment load to the wet detention basin; The stormwater treatment measure(s) associated with SW8090117 will be inspected once a month and within 24 hours after every storm event greater than 1.5 inches (Coastal County). Records of operation and maintenance will be kept in a known set location and will be available upon request. Inspection activities shall be performed as follows in addition to original inspection activities listed on the operation and maintenance agreement associated with SW8090117. BMP element: Potential problems: How I will remediate the problem: The perimeter of the Bare soils and/or erosive gullies Regrade, backfill, compact and wet detention basin have formed permanently stabilize, as needed, all bare/eroded areas Vegetation is too short or too Maintain grassy/leafy vegetation at a long height of approximately six inches with the exception of the pilot project plantings; Determined trees and shrubs may grow over six inches Tree/Shrub plantings Best professional practices show Prune according to specific plant that pruning is needed to requirements maintain optimal plant health Plants are dead, diseased or Determine the source of the problem: dying 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 Tree stakes/wires are present six Remove tree stakes/wires months after planting Ponds can't be accessed for Work over the tops of the shrubs or sedimentation removal or other remove tree/shrub planting and replace required maintenance them after pond sedimentation removal or other required maintenance is complete BASH MITIGATION —STORMWATER PLANTINGS OPERATION AND MAINTENANCE AGREEMENT ADDENDUM The original operation and maintenance agreement for SW8970847 Will be followed with the addition of this addendum. Important operation and maintenance procedures: • Immediately following all scheduled plantings, the plants will be watered twice weekly if needed until the plants become established; • No fertilization of plants will occur after the first initial fertilization; • Stable ground cover will be maintained in the drainage area to reduce the sediment load to the wet detention basin; The stormwater treatment measure(s) associated with SW8970847 will be inspected once a month and within 24 hours after every storm event greater than 1.5 inches (Coastal County). Records of operation and maintenance will be kept in a known set location and will be available upon request. Inspection activities shall be performed as follows in addition to original inspection activities listed on the operation and maintenance agreement associated with SW8 970847. BMP element: Potential problems: How I will remediate the problem: The perimeter of the Bare soils and/or erosive gullies Regrade, backfill, compact and wet detention basin have formed permanently stabilize, as needed, all bare/eroded areas Vegetation is too short or too Maintain grassy/leafy vegetation at a long height of approximately six inches with the exception of the pilot project plantings; Determined trees and shrubs may grow over six inches Tree/Shrub plantings Best professional practices show Prune according to specific plant that pruning is needed to requirements maintain optimal plant health Plants are dead, diseased or Determine the source of the problem: dying 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 Tree stakes/wires are present six Remove tree stakes/wires months after planting Ponds can't be accessed for Work over the tops of the shrubs or sedimentation removal or other remove tree/shrub planting and replace required maintenance them after pond sedimentation removal or other required maintenance is complete BASH MITIGATION —STORMWATER PLANTINGS OPERATION AND MAINTENANCE AGREEMENT ADDENDUM The original operation and maintenance agreement for SW8970927 will be followed with the addition of this addendum. Important operation and maintenance procedures: • Immediately following all scheduled plantings, the plants will be watered twice weekly if needed until the plants become established; • No fertilization of plants will occur after the first initial fertilization; • Stable ground cover will be maintained in the drainage area to reduce the sediment load to the wet detention basin; The stormwater treatment measure(s) associated with SW8970927 will be inspected once a month and within 24 hours after every storm event greater than 1.5 inches (Coastal County). Records of operation and maintenance will be kept in a known set location and will be available upon request. Inspection activities shall be performed as follows in addition to original inspection activities listed on the operation and maintenance agreement associated with SW8970927. BMP element: Potential problems: How I will remediate the problem: The perimeter of the Bare soils and/or erosive gullies Regrade, backfill, compact and wet detention basin have formed permanently stabilize, as needed, all bare/eroded areas Vegetation is too short or too Maintain grassy/leafy vegetation at a long height of approximately six inches with the exception of the pilot project plantings; Determined trees and shrubs may grow over six inches Tree/Shrub plantings Best professional practices show Prune according to specific plant that pruning is needed to requirements maintain optimal plant health Plants are dead, diseased or Determine the source of the problem: dying 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 Tree stakes/wires are present six Remove tree stakes/wires months after planting Ponds can't be accessed for Work over the tops of the shrubs or sedimentation removal or other remove tree/shrub planting and replace required maintenance them after pond sedimentation removal or other required maintenance is complete 6 BASH MITIGATION —STORMWATER PLANTINGS OPERATION AND MAINTENANCE AGREEMENT ADDENDUM The original operation and maintenance agreement for 5W8 080653 will be followed with the addition of this addendum. Important operation and maintenance procedures: • Immediately following all scheduled plantings, the plants will be watered twice weekly if needed until the plants become established; • No fertilization of plants will occur after the first initial fertilization; • Stable ground cover will be maintained in the drainage area to reduce the sediment load to the wet detention basin; The stormwater treatment measure(s) associated with SW8 080653 will be inspected once a month and within 24 hours after every storm event greater than 1.5 inches (Coastal County). Records of operation and maintenance will be kept in a known set location and will be available upon request. Inspection activities shall be performed as follows in addition to original inspection activities listed on the operation and maintenance agreement associated with SW8080653. BMP element: Potential problems: How I will remediate the problem: The perimeter of the Bare soils and/or erosive gullies Regrade, backfill, compact and wet detention basin have formed permanently stabilize, as needed, all bare/eroded areas Vegetation is too short or too Maintain grassy/leafy vegetation at a long height of approximately six inches with the exception of the pilot project plantings; Determined trees and shrubs may grow over six inches Tree/Shrub plantings Best professional practices show Prune according to specific plant that pruning is needed to requirements maintain optimal plant health Plants are dead, diseased or Determine the source of the problem: dying 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 Tree stakes/wires are present six Remove tree stakes/wires months after planting Ponds can't be accessed for Work over the tops of the shrubs or sedimentation removal or other remove tree/shrub planting and replace required maintenance them after pond sedimentation removal or other required maintenance is complete W d 0 a 0 2 a Permit Number: O �U (a (to be provider! 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 This system (check one): ❑ does ® does not incorporate a vegetated filter at the outlet. 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: How 1 will remediate theproblem: The entire BMP Trash debris is present. Remove the Mash/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. Fora SW401-Wet Detention Basin O&M-Rev.3 aF,�`PYNTED OCT 0 .9P0,9eEI of4 BY: �./�' Permit Number: oU �-(42'�3 (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 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 OCT 0 8 2008 Page 2 of 4 DWO PROJ N 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 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 4 feet in the main pond, the sediment shall be removed. When the permanent pool depth reads 4 feet in the forebay, the sediment shall be removed. BASIN DIAGRAM (Jill in the blanks) Permanent Pool Elevation 10 Sediment Removal . 6 1 Pe anen Pool -------------- -- Volume Sediment Removal Elevation Volume Bottom Elevatio 5 -tt Min. -------------------------------------------------- Sediment Bottom Elevation 5 I-ft n Storage Sedimet Storage FOREBAY MAIN POND Form SW401-Wet Detention Basin O&M-Rev.3 E, C E I V ED luutll OCT 0 8 2008 DWQ Page 3 of 4 PROJ# Permit Number: (to be provided by DWQ) I acknowledge and agree by my signature below that 1 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:MCAS NEW RIVER MAINTENANCE HANGAR BMP drainage area number: P-526 / P-651 DA #1 Print Title:Deputy Public Works Officer Address:Blde 1005 Michael Rd., MCB Camp Lejeune, NC 28547 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. hDgeJ2a , a Notary Public for the State of /V�r�/1 CQja�iu County of 0✓1 ,/ , do hereby certify that �t personally appeared before me this day of d t 4c)of , and acknowledge the due execution of the forgoing wet detention basin maintenance requirements. Witness my hand and official seal, AUCE A IONNEM Hoary PWIC OnMaw CouraV 6Mft of North Caron SEAL My commission expires j� t.V Form SW401-Wet Detention Basin O&M-Rev.3 j�E C E 1 V ED OCT 0 8 2008 DWO PROJ # Page 4 of 4 Permit Number- .5�y0'� 6(0�3 (to be provided by DWQ) Drainage Area Number: Filter Strip, Restored Riparian Buffer and Level Spreader 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. Important maintenance procedures: — Immediately after the filter strip is established, any newly planted vegetation will be watered twice weekly if needed until the plants become established (commonly six weeks). — Once a year, the filter strip will be reseeded to maintain a dense growth of vegetation — Stable groundcover will be maintained in the drainage area to reduce the sediment load to the vegetation. — Two to three times a year, grass filter strips will be mowed and the clippings harvested to promote the growth of thick vegetation with optimum pollutant removal efficiency. Turf grass should not be cut shorter than 3 to 5 inches and may be allowed to grow as tall as 12 inches depending on aesthetic requirements (NIPC, 1993). Forested filter strips do not require this type of maintenance. — Once a year, the soil will be aerated if necessary. — Once a year, soil pH will be tested and lime will be added if necessary. After the filter strip is established, it will be inspected quarterly and within 24 hours after every storm event greater than 1.0 inch (or 1.5 inches if in a Coastal County). Records of operation and maintenance will be kept in a known set location and will 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 filter strip Trash/debris is present. Remove the trash/debris. system The flow splitter device The Flow splitter device is Unclog the conveyance and dispose (if applicable) clogged. of any sediment off -site. The Flow splitter device is Make any necessary repairs or damaged. replace if damage is too large for repair. �C %/ OCT 3 0 2008 i Form SWU40I-Level Spreader, Filter Strip, Restored Riparian Buffer O&M-Rev.3 Page I of 3 _ -D BMP element: Potentialproblem: How I will remediate theproblem: The swale and the level The swale is clogged with Remove the sediment and dispose lip sediment. of it off -site. The level lip is cracked, Repair or replace lip. settled, undercut, eroded or otherwise damaged. There is erosion around the Regrade the soil to create a berm end of the level spreader that that is higher than the level lip, and shows stormwater has then plant a ground cover and bypassed it. water until it is established. Provide lime and a one-time fertilizer application. Trees or shrubs have begun Remove them. to grow on the swale or just downslo e of the level lip. The bypass channel Areas of bare soil and/or Regrade the soil if necessary to erosive gullies have formed. remove the gully, and then reestablish proper erosion control. Turf reinforcement is Study the site to see if a larger damaged or ripap is rolling bypass channel is needed (enlarge if downhill. necessary). After this, reestablish the erosion control material. The filter strip Grass is too short or too long Maintain grass at a height of (if applicable). approximately three to six inches. Areas of bare soil and/or Regrade the soil if necessary to 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. Sediment is building up on Remove the sediment and the filter strip. restabilize the soil with vegetation if necessary. Provide lime and a one- time fertilizer application. Plants are desiccated. Provide additional irrigation and fertilizer as needed. 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. Nuisance vegetation is Remove vegetation by hand if choking out desirable species. possible. If pesticide is used, do not allow it to get into the receiving water. The receiving water Erosion or other signs of Contact the NC Division of Water damage have occurred at the Quality local Regional Office, or the outlet. 401 Oversight Unit at 919=733-1786. ocT 3 0 200E Form SWU401-Level Spreader, Filter Strip, Restored Riparian Buffer O&M-Rev.3 Page 2 of 3 Permit Number: , A'LJ 0 U 9642 S'5 (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:MCAS NEW RIVER MAINTENANCE HANGAR BMP drainage area number: P-526 / P-651 DA #1 Print name:Carl Baker, PE Title:Director, Design Branch, Public Works Division, Camp Lejeune Date: io -.23 - D19 Note: The legally responsible party should not be a homeowners association unless more than 50% of the lots have been sold and a resident of the subdivision has been named the president. I_f�f� a Notary Public for the State of N�'f7/CI, 1111i'_' —,County of do hereby certify that personally appeared before me this day of (VeAu , AaW , and acknowledge the due execution of the forgoing filter strip, riparian buffer, and/or level spreader maintenance requirements. Witness my hand and official seal, OrdIM County Stag of f4otth Carolina mmlttlat IXDIt95 Oct 21 SEAL My commission expires c� Oel c'fw0 0 // PzECZIIVEI_D OCT 3 0 2008 BY: Form SWU401-Level Spreader, Filter Strip, Restored Riparian Buffer O&M Page 3 of 3 Cowunum s.ouee pcl 32, 3010 000 04OIp41A GaiopUo oumm conuN "tc vies v so"LLE nFMI H I NF ONI Y Date Rec ived Fee Paid Permit Number I I a w W-37Fs Sc5 SWE� 0&06S3 NC DEQ Division of Energy, Mineral and Land Resources STATE STORMWATER: PERMIT RENEWAL APPLICATION FORM MAY 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 080653 2. Project name: MCAS New River Aircraft Maintenance Hanqer (P-526/P-651) High Desnitv Commercial Wet Pond Project 3. Project street address: XXX City: MCB Camp Leieune County: Onslow ZIP: 28542 4. What, if any, changes have been made to the project as permitted? N/A If the project has changed from the original approved plans, please complete SWU-101 for a Major Modification or Minor Modification Application form available at: https:Hdeg.nc.gov/about/divisions/enerqv- mi ne ral-land-resou rces/ene rgy-m ine ral-land-rules/sto rmwater-pros 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:Hdeg.nc.gov/about/divisions/energv-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: MCB Camp Leieune 2. Signing Official's Name: Neal Paul 3. Signing Official's Title: Deputy Public Works Division 4. Mailing Address: MCB Camp Leieune 1005 Michael Rd. City: MCB Camp Leieune State: NC ZIP: 28547-2521 5. Street Address: City: State: ZIP 6. Phone: (910) 451-2213 Email: neal.paul@usmc.mil EGEN"Ell MAY 17 2021 BY: ------- --_ Stormwater Permit Renewal Form Page 1 of 3 May 11, 2018 C. SUBMITTAL REQUIREMENTS Submit the application package to the appropriate DEMLR Regional Office (Coastal, SA Waters) or DEMLR Central Office (Urbanizing Areas Ph 2, USMP, Non -Coastal HQW/ORW). Only applications packages that include all required items listed below will be accepted and reviewed. Initial each item below to indicate that the required information is provided in the application package: HEB 1. A permit application processing fee of $505.00 payable to NCDEQ. HEB 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 I. Letter of authorization signed by one of the signatories noted in a — e above authorizing the signature of another entity. HEB 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. HEB 4. O&M Agreements, Please select one: ® 1 have a copy of the current recorded O&M Agreement for all SCMs, and I will continue to keep this on file with the permit; or ❑ I do not have a copy of the current recorded O&M Agreement for all SCMs and am requesting a copy be sent to me. I agree to keep this on file with the permit. HEB 5. Designer Certifications, Please select one: ❑ A copy of the certification(s) confirming that the project was built in accordance with the approved plans have been previously provided to the Division; or ® A copy of the certification(s) confirming that the project was built in accordance with the approved plans are enclosed; or ❑ The project has not yet been built. 6. [IF APPLICABLE] If the project has been built, one original hard copy and one electronic copy of a signed, sealed, and dated letter from a licensed professional stating that the SCMs have been inspected, and that they have been built and maintained in accordance with the permit. 7. [IF APPLICABLE] When the permittee is a corporation or a limited liability corporation (LLC): Provide one hard copy and one electronic copy of documentation from the NC Secretary of State, or other official documentation, which supports the titles and positions held by the persons listed in Section C.2 per 15A NCAC 2H. 1043(3)(b). https://www.sosnc.gov/online services/search/bv title/ Business Registration ECEIV MAY 17 2021 BY: Stormwater Permit Renewal Application Form Page 2 of 3 May 11, 2018 D. PERMITT 'S CERTIFICATIOJN7 I, D�1'� 4. blJ� 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, SCM W rship. AI rrfa mation provided on this permit renewal application is, to the best of my knowledge, orre c ahplet� Signature: ° Date: t 7.� NOTARIZATION: a Notary Public for the State of I , do hereby certify that 10l t"a 0. Lbwdx personally appeared before me this the 1_1 day of (nn di 20 and acknowledge the due execution of the forgoing instrument. Witness my hand and official seal, ``%uurrrrii (Notary Seal) ` ��\� \V ERS'O',,' lv NpTAR), '. Notary Signature: _ U My commission expires t 0. %�0• �;�: CO ECEJVE k MAY 17 2021 BY: Stormwater Permit Renewal Application Form Page 3 of 3 May 11, 2018 l 1A Permit No. (to be provide by DWO) FIMA NCDENR Project name Contact person Phone number Date Drainage area number 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 111) must be printed, filled out and submitted along with all of the required information. MCAS New River Aircraft Joe Puckett, PE Stewart Engineering 919-8664829 11/11/2008 O20" W Ar f;s, > r 0 II: DESIGN INFORMATION' Site Characteristics Drainage area 367,022.00 ft' Impervious area 178,7940 ft' `y, impervious 48.71 % Design rainfall depth 1.50 in Storage Volume: Non -SR Waters Minimum volume required 22,408.00 ft" Volume provided 58,767.00 ft" Storage Volume: SR Waters 1-yr, 24-hr runoff depth in Pre -development 1-yr, 24-hr runoff ff3 Post -development 1-yr, 24-hr runoff fit Minimum volume required fit Volume provided its Peak Flow Calculations 1-yr, 24-hr rainfall depth 3.68 in Rational C, pre -development 0.46 (unitless) Rational C, post -development 0.87 (unilless) Rainfall intensity: 1-yr, 24-hr storm 0.15 iruhr Pre -development 1-yr, 24-hr peak flow 14.77 ft"/sec Post -development 1-yr, 24-hr peak flow 11.47 ft/sec Pre/Post 1-yr, 24-hr peak flow control -3.30 It3/sec Basin Elevations Basin bottom elevation 5.00 It Sediment cleanout elevation 6.00 It Bottom of shelf elevation 9.50 ft Permanent pool elevation 10.00 ft SHWT elevation 10.75 ft Top of shelf elevation 10.50 h Temporary pool elevation 11.40 tt NOV 1 2 200� BY:_---_. Form SW401-Wet Detention Basin-Rev.4 Parts 1.811. Design Summary, Page 1 of 2 Permit No, eprovK��) (to be povideU by D WOJWATION Volume and Surface Area Calculations SAIDA ratio 5.60 (unitless) Surface area at the bottom of shelf 31,768.00 f? Volume at the bottom of shelf 86,683.00 h' Permanent pool, surface area required -NA0699 it, GL06 5k Permanent pool, surface area provided 36,797.00 fe OK Permanent pool volume . 103,290.00 ff' Average depth for SAIDA tables 3, Or taf 2.81 it Surface area at the top of shelf W ep ow,,I* (00 z) 41,983.00 ttz Volume at the top of shelf 122,985.00 ff' Forebay volume 20,995.00 ft' Forebay % of permanent pool volume 20.33 % Temporary pool, surface area provided 44,850.00 fe Drawdown Calculations Treatment volume drawdown time Treatment volume discharge rate Pre -development 1-yr, 24-hr discharge Post -development 1-yr, 24-hr discharge Additional Information Diameter of orifice Design TSS removal Basin side slopes Vegetated shelf slope Vegetated shelf width Length of flowpath to width ratio Length to width ratio Trash rack for overflow 8 orifice? Freeboard provided Vegetated filter provided? Recorded drainage easement provided? Capures all runoff at ultimate build -out? Drain mechanism for maintenance or emergencies 2.53 days 0.10 tt'/s 14.77 it'/s 11.47 ft'Is 3 in 90 % 3.00 :1 10.00 :1 10.00 If 4.66 :1 4.66 :1 y (Y or N) 1.00 it N (Y or N) N (Y or N) Y (Y or N) 12-aW-,,A rJ Minimum of 3 it required, Increase depth OK OK OK OK OK OK OK OK OK OK OK Design must be based on 90°k TSS removal Need a recorded drainage easement OK / elt,4 t.ct!✓.a- d&tt -2 S ' i-6 kl� P" -)Ivl- Form SW401-Wet Detention Basin-Rev.4 Parts I. a If. Design Summary, Page 2 of 2 PertnhNo—(f!�!A(¢- 3 (to be provided 6y DW0) IB:.'REQUIREmirr oECKuST 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. 0 a requirement has not been met, attach justification. Page/ Plan Inifials Sheet No. %¢ CG /or — 1. Plans (t' - 50' or larger) of the entire she showing: C G /0 S- Design at ultimate buitd•cut, Oft -she drainage (if applicable) ) Delineated drainage basins Qndude Rational C coefficient per basin), Basin dimensions. N 0 V 1 �• i U", Pretreatment system, High flow bypass system, BY: Maintenance access, Proposed drainage easement and public right of way (ROW), Overflow device, and Boundaries of drainage easement. C61os* 2. Partial plan (1' = Sty 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 shell, and • Filler ship. 3. Section view of the dry detention basin (1' = 2(Y or larger) showing: • Side slopes, 3:1 or lower, • Pretreatment and treatment areas, and • Inlet and outlet structures. 4, If the basin is used for sediment and erosion control during construction, dean out of the basin is specified on the plans prior to use as a wet detention basin. L- h 5. A table of elevations, areas, Incremental volumes 8 accumulated volumes for overall pond and for forebay to verify volume provided. Gblas 8. A construction sequence dret shows how the wet detention basin wig be protected from sediment until the entire drainage area Is stabilized. 7. The supporting calculations. /9 rL 1 8. A copy of the signed and notarized operation and maintenance (O&M) agreement. 9. A copy of the deed restrictions (h required). 10. /Ai soils report that is based upon an actual Bold Investigation, soli borings, and Infiltration testa. County soli maps are not an acceptable source of soils Information. Foon SW401-Wel Detention Ba9IRRev.4 Part M. Required Items Checklist Page 1 of 1 MA �oG WarF9 NCDENR STORMWATER MANAGEMENT PERMIT APPLICATION FORM 401 CERTIFICATION APPLICATION FORM LEVEL SPREADER, FILTER STRIP AND RESTORED RIPARIAN BUFFER SUPPLEMENT This form must be completely (lied out, punted and submitted. DO NOT FORGET TO ATTACH THE REQUIRED ITEMS CHECKLIST AND ALL REQUIRED ITEMS (NEXT WORKSHEET)I 1. PROJECTJNFORMATION , i'-°,' =''3 x `1116 ' +; "I , Project name MICAS NEW RIVER HANGAR Contact name JOSEPH PUCKETT, PE STEWART ENGINEERING INC Phone number 919-866-4829 Date October 8, 2008 Drainage area number STRIP 111. DESIGWINF,ORMATION .,,A' — For Level Spreaders Receiving Flow From a BMP Type of BMP NIA Drawdown flow from the BMP NIA cfs For Level Spreaders Receiving Flow from the Drainage Area Drainage area Impervious surface area Percent impervious Rational C coefficient Peak flow from the 1 in hr storm Time of concentration Rainfall intensity, 10-yr storm Peak flow from the 10-yr slam Where Does the Level Spreader Discharge? To a grassed biaetendon cell? To a mulched bioretention cell? To a wetland? To a filter strip or riparian buffer? Other (specify) Filter Strip or Riparian Buffer Characterization (if applicable) Width of grass Width of dense ground cover Width of wooded vegetation Total width Elevation at downslope base of level lip Elevation at lop of bank of the receiving water Slope (from level lip to to top of bank) Are any draws present? Level Spreader Design Forebay surface area Feet of level lip needed per cis Answer "Y" to one of the following: Length based on the 1 in hr storm? Length based on the 10-yr storm? Length based on the BMP discharge rate? Design now Is a bypass device provided? Do not complete this wcuon of the worksheet. h2 On not complete this section of the waksheet. h' Do M complete this section of the mlisheet. % Do net complete this section of the worksheer Do M tornplete this section of the worksheet. cis Do not complete this section of the mlisheet. min irllhr Do net complete this section d the workSheet. cis Do no co iftite this section of the worksheet. N (YaN) N (YorN) N (Y or N) N (Y or N) NO LEVEL SPREADER, JUST A FILTER STRIP FOR 4,651 SF ON IMPERVIOUS 30.00 h 0.00 ft 0.00 h 30.00 it 15.00 fmsl 15.13 trust -0.43 % OK N (Y or N) OK 0.00 sq it 13 ItIds N (Y or N) Y (Y or N) N (Y or N) 0.39 cis N (Y or N) R R 1�TVl�D No faebay is needed. _� A bypass device is not recited. Farm SW401-1-evel spreader, Filter Strip, Restored Riparian Buffer-Rev.5 Parts I. arM It. Design Summery, page 1 of 3 -4 Lengfh of the level lip 99.00 It +VALUE! Are level spreaders in series? N (Y or N) Bypass Channel Destgn (If applicable) Does the bypass discharge through a wetland? (Y or N) Do nth complete this section of the workshcel. Does the channel enter the stream at an angle? (Y or N) Do net complete this section of the worksheet. Dimensions of the channel (see diagram below): Do not complete this section of the worksheet. M h Do not complete this section of the worksheel. B It Do not complete this section of the worksheet. W III Do not complete sus section of the works1w. y ft Do not complete this social of the workshea. Peak velocity in the channel during the 10-yr storm cfs Do not compete this section of the worksheet. Channel lining material Do not compete this section of the worksheet. w t� Y ............. M B M RECFTN7]ED OCT 1 3 7008 BY: Form SW401-Level Spreader, Filter Strip, Restored Riparian Butter-Rev.5 Parts I. and II. Design Summary, page 2 of 3 III. REQUIRED ITEMS CHECKLIST 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. JWP CG101 1. Plans (1" - 50' or larger) of the entire site showing: - Design at ultimate build -out, - Off -site drainage (it applicable), - Delineated drainage basins (include Rational C coefficient per basin), - Forebay (if applicable), - High flow bypass system, - Maintenance access, - Proposed drainage easement and public right of way (ROW), and - Boundaries of drainage easement. JWP CG103 2. Plan details (1' = 30' or larger) for the level spreader showing: - Forebay (if applicable), - High flow bypass system, - One foot topo lines between the level lip and top of stream bank, Proposed drainage easement, and Design at ultimate build -out. JWP 3. Section view of the level spreader (1" = 20' or larger) showing: Underdrain system (if applicable), Level lip, - Upslope channel, and Downslope filter fabric. JWP 4. A date -stamped photograph of the filter strip that clearly shows the type of vegetation that is present. JWP CG106 5. A construction sequence that shows how the level spreader will be protected from sediment until the entire drainage area is stabilized. JWP SIA 6. The supporting calculations. JWP 7. A copy of the signed and notarized operation and maintenance (0&M) agreement. JWP B. A copy of the deed restrictions (if required). RECEWEL OCT 1 3 7008 BY: _�l Form SW401-Level Spreader, Filter Strip, Restored Riparian Buffer-Rev.5 Part III, page 3 of 3 NU'J ZU-2UU8 'fHU Uti 1Z AM NGUrNK [.,rHA avU-. UIU rOUu�cuuv -I "''UU/,U,.r„n w State Stormwater Management. Systems Permit No. SW8 080653 MCAS New River Aircraft Maintenance Hanger (P-526/P-651) l Stormwater Permit No. SW8 080653 Onslow Countv Designer's Certification I, 'JosetN '�r&cXvTT as a duly registered Fryn%,•w#A- 0I41NGbIt4n the State of North Carolina, having been authorized to observe (e io ' y/ weekly/ full time) the construction of the project, J ACAS 14ev-� T-Wc'L Ne-e -r } WAO- 6P-5Z(6 I P W i (Project) 5„v $— oBotpv$ for asmq Owl Le7Zu,✓8 (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: f 10 AIB. Signature u- A'44L Registration Number 055777 Date •-71 ZW 2010 Page 7 of 8 SEAL. �\�OepFERd SS. 4 SEAL 033779 •/,i`cPNI W AUG 03 2010 llv'UV.N- LUUO Inu' VO- IL r111'NUUE A po rui;,±i,vp �u r �,;i ���.. „-.l'.'..,.. .,.r n,� •ip,,N .y.p :, �}. State Stormwater Management Systems Permit No. SW8 080653 Certification Requirements: �1. The drainage area to the system contains approximately the permitted acreage. JvJ9 ✓ 2. The drainage area to the system contains no more than the permitted amount of built -upon area. -SW ✓ 3. All the built -upon area associated with the project is graded such that the runoff drains to the system. GAWP ✓ 4. All roof drains are located such that the runoff is directed into the system. ot.rP ✓ 5. The outlet/bypass structure elevations are per the approved plan. Soap ✓ 6. The outlet structure is located per the approved plans. -Zw4 ✓7. Trash rack is provided on the outlet/bypass structure. Vtmf ✓ 8. All slopes are grassed with permanent vegetation. —sw* ✓ 9. Vegetated slopes are no steeper than 3:1. t5wf ✓ 10. The inlets are located per the approved plans and do not cause short- circuiting of the system. Sirf i/ 11. The permitted amounts of surface area and/or volume have been provided. 5wP ✓ 12, Required drawdown devices are correctly sized per the approved plans. 3ft-P i,i 13. All required design depths are provided. -ID-1f ✓ 14. All required parts of the system are provided, such as a vegetated shelf, and a forebay, 50-4 ✓ 15. The required system dimensions are provided per the approved plans. cc: NCDENR-DWQ Regional Office Onslow County Building Inspections Page 8 of 8