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HomeMy WebLinkAboutSW7090710_HISTORICAL FILE_20210513STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT. NO. SW__ y� DOC TYPE ❑ CURRENT PERMIT ❑ APPROVED PLANS HISTORICAL FILE COMPLIANCE EVALUATION INSPECTION DOC DATE�%i YYYYMMDD ROY COOPER Governor DIONNE DELLFGATTI Secretary BRIAN WRENN Director NORTH CAROLINA Environmental Quality May 13, 2021 Mr. Charles E. Schulz, Deputy Facilities Officer MCAS Cherry Point PSC Box 8006 Cherry Point, NC 28533 Subject: Stormwater Permit Renewal Stormwater Management Permit SW7090710 MCAS Cherry Point — Child Development Center Craven County Dear Mr. Schulz: A Division of Energy, Mineral, and Land Resources file review has determined that Stormwater Permit SW7090710 for a stormwater treatment system consisting of a wet detention pond serving the Child Development Center expires on December 31, 2021. This is a reminder that permit renewal applications are due 180 days prior to expiration. We do not have a record of receiving a renewal application. Please submit a completed permit renewal application along with a $505.00 fee for permit renewal. Application forms for renewal can be found on our website at: https•//deq nc gnv/about/divisionslenergy mineral land resources/energy mineral land rules/stormwater- rogramJnost-construction. North Carolina General Statutes and the Coastal Stormwater rules require that this property be covered under a stormwater permit. Failure to maintain a permit subjects the owner to assessment of civil penalties. If you have questions, please feel free to contact me at (252) 948-3923. 1 will be glad tc discuss this by phone or meet with you. If you would like, I can e-mail you a copy of the application form. You can request a copy by e-mailing me at rooer.thorne aancdenr oov. Sincerely, Qr Roger K. Thorpe Environmental Engineer Ci+ Ju e:u North Carolina Department of Environmental Quality I Division of Energy, Mineral and Land Resources Washington Regional Office 1 943 Washington Square Mall I Washington, North Carolina 27889 252.946.6481 H . k Stormwater Management Narrative PRESS Modification to Stormwater Permit #SW 7090710 MAR 2 2 2011 Improvements to CDC Playground at Building 4298 MCAS Cherry Point, NC HC ®ENR Craven County WAS Cherry Point proposes to modify the existing Stormwater Permit No. SW7090710 which was issued associated with the construction of a new Child Development Center and parking area in the area immediately north of Building 4298 on Marine Corps Air Station, Cherry Point. A stormwater collection system and stormwater retention pond were permitted and constructed as a part of this project. This work has been completed. Building 4298 is an existing second Child Development Center. This facility was constructed prior to implementation of the Stormwater Management Rules. Stormwater runoff from this facility occurs in a sheet flow action towards the perimeter of the site. It is proposed that four existing playground areas at the existing, older Child Development Center, Building 4298 be renovated to meet current Standards. The project includes the redevelopment of child play areas which are currently covered with sand material into rubberized matting, constructed on concrete slabs. The proposed construction will result in the creation of an additional 10,586 square feet of impermeable surfaces at Building 4298. The construction triggers the requirements for a stormwater collection and treatment system to comply with the Coastal Stormwater Regulations. To comply, it is proposed that a portion of the runoff from the newly constructed impermeable surfaces be routed to the newly constructed stormwater retention pond built as part of the new Child Development Center to the north. The stormwater retention pond is properly sized to handle the runoff from these additional impermeable surfaces without any modifications. The additional impervious areas created by this project are located on the northern and southern sides of Building 4298. It is not practical to collect the runoff from the southern side of the existing facility and discharge it to the existing wet detention pond. The northern side impermeable surfaces can be collected and treated. To compensate for those areas on the southern side of Building 4298 that cannot be collected and treated, runoff from additional impervious surfaces on the northern side of the facility are proposed to be collected and routed through the treatment system. The additional areas include driveways, paving, roof areas and the playground areas. In total, runoff associated with 16,471 square feet of impermeable surfaces is proposed to be collected and routed through the stormwater retention pond. The additional impervious area proposed to be treated by this modification is 16,471 square feet which is significantly larger than 10,586 square feet of new created impervious area which are proposed to be constructed for the project. Additionally, it is proposed that the runoff that occurs from the southern side of the playground area, which will not be routed through the stormwater retention pond, will discharge in a sheet flow action to adjacent vegetated areas and an existing vegetated swale prior to exiting the site. The additional impervious area is located on two separate sides of the existing child care facility. It is not practical to collect the runoff from the opposite side of the existing facility and discharge it to the existing wet detention pond. This project proposes to collect runoff from additional untreated impervious area to compensate for the runoff not collected from the opposite side of the building. This additional area includes driveway paving, roof area and the playground area. The resulting additional impervious area discharged to the pond is 16,471 SF as opposed to 10,586 SF of impervious area which would be associated with the two new playgrounds only. In addition, the runoff associated with the playground improvements on the opposite side of the existing child care center building drain through an existing grass swale prior to any discharge to surface waters. The existing pond was originally sized to contain and draw down the runoff associated with the 2.0 inch rainfall event in order to meet LEED requirements. The pond will detain the required runoff volumes in addition to attenuating the peak runoff rates without any physical modifications to the pond or outlet device. A recalculation of the pond average depth was made using Option i . The pond average depth is large enough to make the required pond surface area adequate when including the additional impervious area. The elevated overflow weir also makes it possible to contain the runoff volumes associated with both the 1.5" and 2.0" rainfall events. The 1.5" and 2.0" runoff volumes discharge in 2.3 and 2.7 days respectively through the existing 2.25" orifice. The project will continue to use the wet detention pond for stormwater treatment. The pond is sized for 90% TSS removal and will detain the treatment volume associated with the 1.5 and 2.0 inch rainfall events. The project area is established as a total of 8.8 acres in size. The project built -upon area is 33.9%. Approximately 0.3 acres of additional site area will be disturbed by this project in order to construct the playground improvements. The wet pond is sized using the average pond depth method and comes out to 4.17 feet (rounded to 4.0 feet). The forebay is sized to be 20% of the pond volume excluding the one foot sediment storage zone. The provided permanent pool surface area of 11,834 SI" exceeds the required 11,535 SF of permanent pool surface area. The detention pond will be used as a temporary sedimentation trap during construction and will be cleaned of any accumulated sediment after construction. The soils on the site are classified as Norfolk Urban Land Complex by the Craven County Soil Survey. The soil is described as a brown loamy fine sand to a sandy clay loam at the depths to be disturbed by this project. The elevation of the seasonal high water table at the boring location was determined to be 18.5 feet. The pond permanent pool elevation is set at an elevation six inches above the SH WT at an elevation of 19.0 I ect. The property is owned by Marine Corps Base Camp Lejeune and is Federal property. The existing child care facility that is receiving the playground modifications is pre-1988 built -upon area. There will be no new utilities constructed by this project. There are no known historic sites on the property. The project will be constructed with federal funds. There are not any NCDGNR non-compliance issues associated with the site. ']'lie site drains to Sandy Branch, a tributary of the NELISe River. Sandy Branch is classified as C; Sw, NSW, index #27-112-2-3. There are not any 404 or Coastal wetlands on the site. This project, including the detention pond outfall, does not impact the wetlands. The wetlands were delineated by Kevin Avolis, PG, Vice -President Avolis Lnginecring, P.A. ']'his project requires post development runoff rate control which is accomplished by the wet pond to pre -development conditions for the 1-year, 24-hour storm. Stormwater Management Narrative M* dification to Stormwater Permit #SW 7090710 Wit.-, `Repairs & Improvements to Building 4298 JUL 2 0 2015 MCAS Cherry Point, North Carolina Craven County , b MCA§ Cherry Point proposes to make improvements to the existing Building 4298, the Child Development Center located at Marine Corps Air Station, Cherry Point, North Carolina. Building 4298 was constructed prior to the implementation of the Stormwater Management Rules. On March 30, 2011, a Stormwater Permit Modification was issued for the Child Development Center at MCAS Cherry Point (SW7090710 Mod). This permit modification was associated wit�econstruction of four playground areas surrounding Building 4298. The permit was submitted and approved to allow a portion of the runo from the north side of Building 4298, including the renovated playground, to discharge to the newly constructed stormwater management system for new Child Development Center located to the north. Included with this permit submittal is an overall site plan illustrating the configuration and location of Building 4298, the new CDC to the north and its associated stormwater treatment system. After the modification to the playground areas in 2011 which was permitted by the March 2011 permit modification, the northern half of Building 4298 discharged to the stormwater retention pond and was incorporated into the drainage boundaries for the referenced stormwater permit. The south side of Building 4298, including the playground area, remains outside the drainage boundaries for the referenced permit. At this time, MCAS Cherry Point propo5es to make additional modifications at Building Specifically, it is proposed that 531 square feet of new sidewalk be added to the north side of the playground area to provide a hardened egress route in cases of emergencies:-----ThZmw iunpurnicabic surfaces are located within the previously permitted drainage Therefore, a second modification is being requested to the referenced permit to allow for the construction of 531 square foot of new concrete sidewalk in the north side playground area. Additional sidewalk areas are also being constructed in the south side playground area, in areas outside the permitted drainage boundary. It is proposed that a total of 1,604 square feet of impermeable surfaces be created here. R­un—offToni these newly constructed impermeable surfaces will continue to occur in sheetflow action to the vegetated areas and ultimately to roadside ditch that is located to the south. This additional impermeable area in an unpermitted area does not meet the threshold for permitting action. The existing stormwater retention to the to from the 53l square feet of new impermeable surfaces. Based on our ca modifications ar e require to e stormwater pond or outlet structures to .The site drains to ndy Branch, a tribptary of the Neuse River. Sandy Branch is. classified as C; Sw, NSW, Index #27-117. There are not any 404 or Coastal s Wetlands located with the project area. This project requires post development runoff rate control which is accomplished by the wet pond to pre -development conditions for the 1-year, 24-hour storm. "OLIS ENGINEERING, PA P.O. Box 15564 New Bern, North Carolina 28561 252.633.0068 License No. C-0706 July 15, 2015 Mr. Samir Dumpor Environmental Engineer NCDENR 943 Washington Square Mall Washington, NC 27889 RECE !! E® JUL 2 0 2015 ItI A 0 RE: Modifications to Repairs & Improvements to Building 4298 Project CP1504M/CP1504R Marine Corps Air Station, Chevy Point, North Carolina AE Project No. 15009 Dear Samir: Enclosed please find our Stormwater Permit Modification submittal for the referenced project consisting of the following: • Current Project Plans (Two Copies) • Previous Project Plans (Two Copies) • USGS Map (Two Copies) • Stormwater Calculations (Two Copies) • Stormwater Narrative (Two Copies) • Copy of March 30, 2011 Permit Modification • $2,000 Express — Minor Mod (H) Fee Should you have any questions relating to this matter or need any additional information, please do not hesitate to call. R c i�/ D *A NCDENR JULNcirtb Qafolina Department of Environment and Natural Resources Division of Water Quality Beverly Eaves Perdue !A I a r 2 f"Coleen H. Sullins Governor °°' 00 :� -""'/Director Mr. George Radford, MCAS Cherry Point PSC Box 8006 MCAS Cherry Point, Dear Mr. Radford: Environmental Affairs Officer Dee Freeman NC 28533-0013 Subject: Stormwater Permit No. SW7090710 MOD Child Development Center, MCAS Cherry Point High Density Commercial Wet Pond Project Craven County The Washington Regional Office received a complete Stormwater Management Permit Modification Application for Child Development Center, MCAS Cherry Point, NC on March 22, 2011. Staff review of the plans and specifications has determined that the project, as proposed, will comply with the Stormwater Regulations set forth in Session Law 2008-211 and Title 15A NCAC 2H.1000. We are forwarding Permit No. SW7090710 Modification dated March 30, 2011, for the construction of the subject project. This Modification is to add the renovated playground areas at the existing old Child Development Center, as well as half of the roof and part of the parking to the wet detention basin constructed for the new Child Development Center. The old Child Development Center is covered under the Stormwater Permit Number SW7001204. This permit shall be effective from the date of issuance until March 30, 2021, shall void permit SW7090710 issued on July 31, 2009 and shall be subject to the conditions and limitations as specified therein. Please pay special attention to the Operation and Maintenance requirements in this permit. Failure to establish an adequate system for operation and maintenance of the stormwater management system 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 upon written request within thirty (30) days following receipt of this permit. This request must be in the form of a written petition, conforming to Chapter 150E of the North Carolina General Statutes, and filed with the Office of Administrative Hearings, P.O. Drawer 27447, Raleigh, NC 27611-7447. Unless such demands are made this permit shall be final and binding. If you have any questions, or need additional information concerning this matter, please contact Samir Dumpor, or me at (252) 946-6481. Si ce e y, AAl Ho g Regional Supervisor Surface Water Protection Section AH/ sd: K:\SD\Permits-Wet Pond\SW7090710Modification cc: ✓Kevin Avolis, PE, Avolis Engineering, PA Craven County Building Inspections Washington Regional Office North Carolina Division of Water Quality Internet aC'a1eruuali1v.oig 943 Washington Square Mall Phone: 252-946-6481 �TOne Washington, NC 27889 FAX 252-946-9215 1 ort7hCa+tr-7ofina An Equal Opportunity/ARrmative Action Employer- 50%Recycled/10% Post Consumer Paper N{-{tura/& State Stormwater Management Systems Permit No. V7090710 Modification STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF WATER QUALITY 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 MCAS Cherry Point Child Development Center, MCAS Cherry Point Havelock, Craven County FOR THE construction, operation and maintenance of a wet detention pond in compliance with the provisions of Session Law 2008-211 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 Water Quality and considered a part of this permit. This permit shall be effective from the date of issuance until March 30, 2021, and shall be subject to the following specified conditions and limitations: I. DESIGN STANDARDS 1. This permit is effective only with respect to the nature and volume of stormwater described in the application and other supporting data. 2. This stormwater system has been approved for the management of stormwater runoff as described in Section 1.7 of this permit. The stormwater control has been designed to handle the runoff from 129,823 square feet of impervious area. 3. The tract will be limited to the amount of built -upon area indicated in Section I, of this permit, and per approved plans. 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. 6. The built -upon areas associated with this project shall be located at least 50 feet landward of all perennial and intermittent surface waters. 7. The following design criteria have been provided in the wet detention pond and must be maintained at design condition: Page 2 of 7 State Stormwater Management Systems Permit No. V7090710 Modification a. Drainage Area, acres: b. Total Impervious Surfaces, ft2: C. Design Storm, inches: d. Pond Depth, feet: e. TSS removal efficiency. f. Permanent Pool Elevation, FMSL: g. Permanent Pool required surface area, ft2. h. Permanent Pool ProvidedSurface Area, ft2: i. Required Storage Volume at3Temp. Pool, ft3: j. Provided Storage Volume, ft k. Temporary Storage Elevation, FMSL: I. Predevelopment 1 year 24 hour: M. Post development 1 year 24 hour: n. Controlling Orifice: o. Permitted Forebay Volume, ft3: p. Fountain Horsepower, HP q. Receiving Stream/River Basin: r. Stream Index Number: S. Classification of Water Body: 8.79 129,823 1.50 4.0 average 0 90 /o 19.00 ✓ 11,535 Glue 11,834 ✓ 17,696 22,668 ✓✓ 20.15 13.20 ft3/sec 14.90 ft3/sec '' 2.25"0 pipe ✓ 10,783 1/6, one sixth hp Sandy Branch / Neuse 27-112-2-3 "C; Sw, 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. 3. The permittee shall at all time provide the operation and maintenance necessary to assure the permitted stormwater system functions at optimum efficiency. The approved Operation and Maintenance Plan must be followed in its entirety and maintenance must occur at the scheduled intervals including, but not limited to: a. Semiannual scheduled inspections (every 6 months). b. Sediment removal. C. Mowing and 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, levei spreader, filter strip; catch basins and piping. g. 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. The permittee shall submit to the Division of Water Quality 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. 6. Access to the stormwater facilities shall be maintained via appropriate easements at all times. 7. Decorative spray fountains will be allowed in the stormwater treatment system, subject to the following criteria: a. The fountain must draw its water from less than 2' below the permanent Page 3 of 7 State Stormwater Management Systems Permit No N7090710 Modification pool surface. 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. The falling water from the fountain must be centered in the pond, away from the shoreline. The maximum horsepower for a fountain in this pond is one sixth (1/6) horsepower. 8. The facilities shall be constructed as shown on the approved plans. This permit shall become void unless the facilities are constructed in accordance with the conditions of this permit, the approved plans and specifications, and other supporting data. 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. 11, The permittee shall submit to the Director and shall have received approval for revised plans, specifications, and calculations prior to construction, for any modification to the approved plans, including, but not limited to, those listed below: a. Any revision to any item shown on the approved plans, including the stormwater management measures, built -upon area, details, etc. b. Project name change. C. Transfer of ownership. d. Redesign or addition to the approved amount of built -upon area or to the drainage area. e. Further subdivision, acquisition, lease or sale of all or part of the project area. The project area is defined as all property owned by the permittee, for which Sedimentation and Erosion Control Plan approval or a CAMA Major permit was sought. f. Filling in, altering, or piping of any vegetative conveyance shown on the approved plan. 12. 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. 13. The permittee shall submit final site layout and grading plans for any permitted future areas shown on the approved plans, prior to construction. 14. A copy of the approved plans and specifications shall be maintained on file by the Permittee at all times. III. GENERAL CONDITIONS This permit is not transferable except after notice to and approval by the Director. Page 4 of 7 State Stormwater Management Systems Permit No. /7090710 Modification In the event of a change of ownership, or a name change, the permittee must submit a completed Name/Ownership Change form, to the Division of Water Quality; signed by both parties, and accompanied by supporting documentation as listed on page 2 of the form. The project must be in good standing with the Division. The approval of this request will be considered on its merits and may or may not be approved. 2. The permittee is responsible for compliance with all permit conditions until such time as the Division approves the transfer request. 3. Failure to abide by the conditions and limitations contained in this permit may subject the Permittee to enforcement action by the Division of Water Quality, in accordance with North Carolina General Statute 143-215.6A to 143-215.6C. 4. The issuance of this permit does not preclude the Permittee from complying with any and all statutes, rules, regulations, or ordinances, which may be imposed by other government agencies (local, state, and federal) having jurisdiction. 5. In the event that the facilities fail to perform satisfactorily, including the creation of nuisance conditions, the Permittee shall take immediate corrective action, including those as may be required by this Division, such as the construction of additional or replacement stormwater management systems. 6. The permittee grants DENR Staff permission to enter the, property during normal business hours for the purpose of inspecting all components of the permitted stormwater management facility. 7. The permit issued shall continue in force and effect until revoked or terminated. The permit may be modified, revoked and reissued or terminated for cause. The filing of a request for a permit modification, revocation and re -issuance or termination does not stay any permit condition. 8. Unless specified elsewhere, permanent seeding requirements for the stormwater control must follow the guidelines established in the North Carolina Erosion and Sediment Control Planning and Design Manual. 9. Approved plans and specifications for this project are incorporated by reference and are enforceable parts of the permit. 10. 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 as allowed by the laws, rules and regulations contained in Session Law 2006- 246, Title 15A NCAC 21-1.1000, and NCGS 143-215.1 et.al. 11. The permittee shall notify the Division of any name, ownership or mailing address changes at least 30 days prior to making such changes. 12. This permit shall be effective from the date of issuance until July 31, 2019. Application for permit renewal shall be submitted 180 days prior to the expiration date of this permit and must be accompanied by the processing fee. Permitholee his the 30th day of March, 2011. CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION for . Sul i Director Division of Water Quality By Authority of the Environmental Management Commission Page 5 of 7 State Stormwater Management Systems Permit No N7090710 Modification Stormwater Permit No. SW7090710 Modification Child Development Center, MCAS Cherry Point, NC Stormwater Permit No. SW7090710 Modification Craven County Designer's Certification 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 Nc N7090710 Modification 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. 8. 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: NCDENR-DWQ Washington Regional Office Craven County Building Inspections Page 7 of 7 I NCDENR North Carolina Department of Environment and Natural Resources Division of Water Quality Beverly Eaves Perdue Coleen H. Sullins Dee Freeman Governor Director Secretary March 30, 2011 r� Mr. George Radford, Environmental Affairs Officer 7 l 1 1 r+"� t Mod i eA MICAS Cherry Point I PSC Box 8006 G^ �ul�r 2 1 2tO 1( MCAS Cherry Point, NC 28533-0013 Subject: Stormwater Permit No. SW7090710 MOD Child Development Center, MCAS Cherry Point High Density Commercial Wet Pond Project Craven County Dear Mr. Radford: The Washington Regional Office received a complete Stormwater Management Permit Modification Application for Child Development Center, MICAS Cherry Point, NC on March 22, 2011. Staff review of the plans and specifications has determined that the project, as proposed, will comply with the Stormwater Regulations set forth in Session Law 2008-211 and Title 15A NCAC 2H.1000. We are forwarding Permit No. SW7090710 Modification dated March 30, 2011, for the construction of the subject project. This Modification is to add the renovated playground areas at the existing old Child Development Center, as well as half of the roof and part of the parking to the wet detention basin constructed for the new Child Development Center. The old Child Development Center is covered under the Stormwater Permit Number SW7001204. This permit shall be effective from the date of issuance until March 30, 2021, shall void permit SW7090710 issued on July 31, 2009 and shall be subject to the conditions and limitations as specified therein. Please pay special attention to the Operation and Maintenance requirements in this permit. Failure to establish an adequate system for operation and maintenance of the stormwater management system 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 upon written request within thirty (30) days following receipt of this permit. This request must be in the form of a written petition, conforming to Chapter 150E of the North Carolina General Statutes, and filed with the Office of Administrative Hearings, P.O. Drawer 27447, Raleigh, NC 27611-7447. Unless such demands are made this permit shall be final and binding. If you have any questions, or need additional information concerning this matter, please contact Samir Dumpor, or me at (252) 946-6481. SiVce a y, A1�9 Regional Supervisor Surface Water Protection Section AH/ sd: K:\SD\Permits-Wet Pond\SW7090710Modification cc: Kevin Avolis, PE, Avolis Engineering, PA Craven County Building Inspections ,-/*ashington Regional Office North Carolina Division of Water Quality Internet: www.ncwatcrqualitv.ure 943 Washington Square Mall Phone: 252-946-6481 One Washington, NC 27889 FAX 252-946-9215 NorthCarojjna An Equal OpportunitylAKrmative Action Employer— 50% Recycled/10% Post Consumer Paper Naturally State Stormwater Management Systems Permit No. SW7090710 Modification STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF WATER QUALITY 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 MCAS Cherry Point Child Development Center, MCAS Cherry Point Havelock, Craven County FOR THE construction, operation and maintenance of a wet detention pond in compliance with the provisions of Session Law 2008-211 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 Water Quality and considered a part of this permit. This permit shall be effective from the date of issuance until March 30, 2021, and shall be subject to the following specified conditions and limitations: I. DESIGN STANDARDS 1. This permit is effective only with respect to the nature and volume of stormwater described in the application and other supporting data. 2. This stormwater system has been approved for the management of stormwater runoff as described in Section 1.7 of this permit. The stormwater control has been designed to handle the runoff from 129,823 square feet of impervious area. 3. The tract will be limited to the amount of built -upon area indicated in Section I. of this permit, and per approved plans. 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. 6. The built -upon areas associated with this project shall be located at least 50 feet landward of all perennial and intermittent surface waters. 7. The following design criteria have been provided in the wet detention pond and must be maintained at design condition: Page 2 of 7 State Stormwater Management Systems Permit No. SW7090710 Modification a. Drainage Area, acres: b. Total Impervious Surfaces, ft2: C. Design Storm, inches: d. Pond Depth, feet: e. TSS removal efficiency: f. Permanent Pool Elevation, FMSL: g. Permanent Pool required surface area, ft2 h. Permanent Pool ProvidedSurface Area, ft2: i. Required Storage Volume aT Temp. Pool, ft3 j. Provided Storage Volume, ft k. Temporary Storage Elevation, FMSL: I. Predevelopment 1 year 24 hour: M. Post development 1 year 24 hour: n. Controlling Orifice: o. Permitted Forebay Volume, ft3: P. Fountain Horsepower, HP q. Receiving Stream/River Basin: r. Stream Index Number: S. Classification of Water Body: II. SCHEDULE OF COMPLIANCE 8.79 129,823 1.50 4.0 average 90% 19.00 11,535 11,834 17,696 22,668 20.15 13.20 ft3/sec 14.90 ft3/sec 2.25" 0 pipe 10,783 1/6, one sixth hp Sandy Branch / Neuse 27-112-2-3 "C; Sw, NSW" 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. The permittee shall at all time provide the operation and maintenance necessary to assure the permitted stormwater system functions at optimum efficiency. The approved Operation and Maintenance Plan must be followed in its entirety and maintenance must occur at the scheduled intervals including, but not limited to: a. Semiannual scheduled inspections (every 6 months). b. Sediment removal. C. Mowing and 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. The permittee shall submit to the Division of Water Quality 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. 6. Access to the stormwater facilities shall be maintained via appropriate easements at all times. 7. Decorative spray fountains will be allowed in the stormwater treatment system, subject to the following criteria: a. The fountain must draw its water from less than 2' below the permanent Page 3 of 7 State Stormwater Management Systems Permit No. SW7090710 Modification pool surface. b. 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. c. The falling water from the fountain must be centered in the pond, away from the shoreline. d. The maximum horsepower for a fountain in this pond is one sixth (1/6) horsepower. 8. The facilities shall be constructed as shown on the approved plans. This permit shall become void unless the facilities are constructed in accordance with the conditions of this permit, the approved plans and specifications, and other supporting data. 9. 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. 11. The permittee shall submit to the Director and shall have received approval for revised plans, specifications, and calculations prior to construction, for any modification to the approved plans, including, but not limited to, those listed below: a. Any revision to any item shown on the approved plans, including the stormwater management measures, built -upon area, details, etc. b. Project name change. C. Transfer of ownership. d. Redesign or addition to the approved amount of built -upon area or to the drainage area. e. Further subdivision, acquisition, lease or sale of all or part of the project area. The project area is defined as all property owned by the permittee, for which Sedimentation and Erosion Control Plan approval or a CAMA Major permit was sought. f. Filling in, altering, or piping of any vegetative conveyance shown on the approved plan. 12. 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. 13. The permittee shall submit final site layout and grading plans for any permitted future areas shown on the approved plans, prior to construction. 14. A copy of the approved plans and specifications shall be maintained on file by the Permittee at all times. III. GENERAL CONDITIONS This permit is not transferable except after notice to and approval by the Director. Page 4 of 7 State Stormwater Management Systems Permit No. SW7090710 Modification In the event of a change of ownership, or a name change, the permittee must submit a completed Name/Ownership Change form, to the Division of Water Quality; signed by both parties, and accompanied by supporting documentation as listed on page 2 of the form. The project must be in good standing with the Division. The approval of this request will be considered on its merits and may or may not be approved. 2. The permittee is responsible for compliance with all permit conditions until such time as the Division approves the transfer request. Failure to abide by the conditions and limitations contained in this permit may subject. the Permittee to enforcement action by the Division of Water Quality, in accordance with North Carolina General Statute 143-215.6A to 143-215.6C. 4. The issuance of this permit does not preclude the Permittee from complying with any and all statutes, rules, regulations, or ordinances, which may be imposed by other government agencies (local, state, and federal) having jurisdiction. 5. In the event that the facilities fail to perform satisfactorily, including the creation of nuisance conditions, the Permittee shall take immediate corrective action, including those as may be required by this Division, such as the construction of additional or replacement stormwater management systems. 6. The permittee grants DENR Staff permission to enter the property during normal business hours for the purpose of inspecting all components of the permitted stormwater management facility. 7. The permit issued shall continue in force and effect until revoked or terminated. The permit may be modified, revoked and reissued or terminated for cause. The filing of a request for a permit modification, revocation and re -issuance or termination does not stay any permit condition. 8. Unless specified elsewhere, permanent seeding requirements for the stormwater control must follow the guidelines established in the North Carolina Erosion and Sediment Control Planning and Design Manual. 9. Approved plans and specifications for this project are incorporated by reference and are enforceable parts of the permit. 10. 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 as allowed by the laws, rules and regulations contained in Session Law 2006- 246, Title 15A NCAC 21-1.1000, and NCGS 143-215.1 et.al. 11. The permittee shall notify the Division of any name, ownership or mailing address changes at least 30 days prior to making such changes. 12. This permit shall be effective from the date of issuance until July 31, 2019. Application for permit renewal shall be submitted 180 days prior to the expiration date of this permit and must be accompanied by the processing fee. Permit issyied this the 30th day of March, 2011. NORTHICAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION /—\G LY�.7'' for Co ee 4,ul i irector Division of Water Quality By Authority of the Environmental Management Commission Page 5 of 7 State Stormwater Management Systems Permit No. SW7090710 Modification Stormwater Permit No. SW7090710 Modification Child Development Center, MCAS Cherry Point, NC Stormwater Permit No. SW7090710 Modification Craven Countv Designer's Certification I, , as a duly registered in the State of North Carolina, having been authorized to observe (periodically/ weekly/ tull 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. SW7090710 Modification 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. 8. 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: NCDENR-DWQ Washington Regional Office Craven County Building Inspections Page 7 of 7 DWQ USE ONLY Fee Paid a* 1 37ZL� Permit Number $I o,,c;P -I, m 4cr V Sb l'1 Dc I ' 1 1 0 ApplicablMMA201toastal SW -1995 ❑ Coastal S - 2008 ❑ Ph II - Post Construction (select ali tpha�t a ph ❑ Non -Coastal SW- HQW/ORW Waters ❑ Universal Storm water Management Plan N&di ther WO M¢mtPlan: State of North Carolina Department of Environment and Natural Resources Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM This form may be photocopied for use as an original GENERAL INFORMATION L Project Name (subdivision, facility, or establishment name - should be consistent with project name on plans, specifications, letters, operation and maintenance agreements, etc.): Child Development Center, MCAS Cherry Point 2. Location of Project (street address): Woodside Drive City:MCAS Cherry Point County:Craven Zip:28533 3. Directions to project (from nearest major intersection): Proceed from main gate off of NC Highway 1010 along Roosevelt Boulevard. Proceed past MCX Exchange_ Project site is on left next to another existing Child Development Center. 4. Latitude:34° 54' 06" N Longitude:76° 54' 30" W of the main entrance to the project. it. PERMIT INFORMATION: I.a. Specify whether project is (check one): ❑New ®Modification b.If this application is being submitted as the result of a modification to an existing permit, list the existing permit number SW7090710 , its issue date (if known) and the status of construction: ❑Not Started ❑Partially Completed* ® Completed* *provide a designer's certification 2. Specify the type of project (check one): ❑Low Density ®High Density ❑Drains to an Offsite Stormwater System ❑Other 3. If this application is being submitted as the result of a previously returned application or a letter from DWQ requesting a state stormwater management permit application, list the stormwater project number, if assigned, N/A and the previous name of the project, if different than currently proposed, 4. a. Additional Project Requirements (check applicable blanks; information on required state permits can be obtained by contacting the Customer Service Center at 1-877-623-6748): []LAMA Major ®Sedimentation/Erosion Control: 0.3 ac of Disturbed Area ❑NPDES Industrial Stormwater ❑404/401 Permit: Proposed Impacts b.If any of these permits have already been acquired please provide the Project Name, Project/Permit Number, issue date and the type of each permit: Erosion & Sedimentation Control Plan No. Crave-2010-007; July 23, 2009; 7.9 acres disturbance Fonn SWU-101 Version 07Jun2010 Page 1 of Ill. CONTACT INFORMA7 V 1. a. Print Applicant / Signing Official's name and title (specifically the developer, property owner, lessee, designated government official, individgpA, etc. who owns the vroiect): Signing Official & Title:George Radford, Director Environmental Affairs l�.�e of 'hK,¢_ C9Matqu b.Contact information for person listed in item la above: Street Address:Bldg. 4223, Access Road City:MCAS Cherry Point State:NC Zip:28533 Mailing Address (ifnpplicable):PSC Box 8006 City:MCAS Cherry Point State:NC Zip:28533-0013 Phone: (252 ) 466-4186 Fax: (252 ) 466-2000 EmaiLgeorge.radford@usmc.mil c. Please check the appropriate box. The applicant listed above is: ®The property owner (Skip to Contact Information, item 3a) ❑ Lessee* (Attach a copy of the lease agreement and complete Contact Information, item 2a and 2b below) ❑ Purchaser* (Attach a copy of the pending sales agreement and complete Contact Information, item 2a and 2b below) ❑ Developer* (Complete Contact Information, item 2a and 2b below.) 2. a. Print Property Owner's name and title below, if you are the lessee, purchaser or developer. (]'his is the person who owns the property that the project is located on): Property Owner/Organization: Signing Official & Title: b.Contact information for person listed in item 2a above: Street Address: City: Mailing Address (if City: Phone: ( ) Ema State: -Lip: State: Zip: Fax: ( 1 3. a. (Optional) Print the name and title of another contact such as the project's construction supervisor or other person who can answer questions about the project: Other Contact Person/Organization: Signing Official & Title: b. Contact information for person listed in item 3a above: Mailing Address: City:_ Phone: Fax: 4. Local jurisdiction for building permits: N/A - Federal Installation Point of Phone #: Fonn S WU-101 Version 07Jun2010 Page 2 of 6 IV. PROJECT INFORMATI 1. In the space provided below, briefly summarize how the stormwater runoff will be treated. Stormwater runoff associated with playground renovation at an adjoining child care facility will be discharged into and treated by the existng wet detention pond constructed under this permit. 2. a. If claiming vested rights, identify the supporting documents provided and the date they were approved: ❑ Approval of a Site Specific Development Plan or PUD Approval Date: ❑ Valid Building Permit Issued Date: ❑ Other: Date: b.If claiming vested rights, identify the regulation(s) the project has been designed in accordance with: ❑ Coastal SW - 1995 ❑ Ph II - Post Construction 3. Stonnwater runoff from this project drains to the Neuse River basin. 4. Total Property Area: 8.79 acres 5. Total Coastal Wetlands Area: 0 acres 6. Total Surface Water Area: 0 acres 7. "Total Property Area (4) - Total Coastal Wetlands Area (5) - Total Surface Water Area (6) = Total Project Area+:8.79 acres Total project area shall be calculated to exclude the follozoin the uornml pool of impounded structures, the area between the batiks of streams and rivers, the area below the Normal High Water (NHVO line or Mean High Water (MHW) line, and coastal wetlands landward from the NHW (or MHVV) title. The resultant project area is used to calculate overall percent built upon area (BUA). Noti-coastal wetlands landward of the NHW (or MHM line may be included itt the total project area. 8. Project percent of impervious area: (Total Impervious Area / Total Project Area) X 100 = 33.9 % 9. I -low many drainage areas does the project have?1 (For high density, count 1 for each proposed engineered storuaoater BMP. For low density and other projects, use I for the whole property area) 10. Complete the following information for each drainage area identified in Project Information item 9. If there are more than four drainage areas in the project, attach an additional sheet with the information for each area provided in the same format as below. Basin Information Drainage Area 1 Drainage Area ° llraiiia e Area _ Draina e Area _ Receiving Stream Name Sandy Branch Stream Class * C; Sw, NSW Stream Index Number * 27-112-2-3 Total Drainage Area (sf) 383,228 On -site Drainage Area (so 346,070 SW70?0 'o Off -site Drainage Area (so 37,158 ✓ Proposed Impervious Area** (so 129,823 113,1�52 + 471 ad z-;oq % Impervious Area** total 33.9 Impervious** Surface Area Drainage Area 1 Drainage Area Drainage Area Drainage Area _ On -site Buildings/Lots (sf) 30,620 On -site Streets (so > m.ue'w-\ nc On -site Parking (sf) 64,496 On -site Sidewalks (sf) 18,236 Other on -site (so 16,471 n pluy�" ,a Future (sf) -- Off-site (so Existing BUA*** (so 0 Total (sf): 129,823 Strewn Class and Index Number can be determined at: kitty://nortaLncdenr.oro nel7Avq(ps/esu/classi cations Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas, sidewalks, gravel areas, etc. *** Report only that amount of existing BUA that will retrain after development. Do not report ally existing BUA that is to be removed and which will be replaced by new BUA. Form SWU-101 Version 07Jun2010 Page 3 of 6 11. Flow was the off -site impery area listed above determined? Provide d nentation. Field visit and topographic survey. Projects in Union County: Contact DWQ Central Office staff to check if the project is located within a Threatened & Endangered Species watershed that may be subject to more sn•ingent stormwater requirements a.c per NCAC 02B .0600. V. SUPPLEMENT AND O&M FORMS 'the applicable state stormwater management permit supplement and operation and maintenance (O&M) forms must be submitted for each BMP specified for this project. The latest versions of the forms can be downloaded from httLi://portal.ncdenr.orL/web/wo/ws/su/bniD-manual. VI. SUBMITTAL REQUIREMENTS Only complete application packages will be accepted and reviewed by the Division of Water Quality (DWQ). A complete package includes all of the items listed below. A detailed application instruction sheet and BMP checklists are available from http://Vortal.ncdenr.org/web/wq/`ws/su/statesw/forms does. The complete application package should be submitted to the appropriate DWQ Office. (The appropriate office may be found by locating project on the interactive online map at http://portal.ncdenrorg/web/wq/ws/su/maps.) Please indicate that the following required information have been provided by initialing in the space provided for each item. All original documents MUST be signed and initialed in blue ink. Download the latest versions for each submitted application package from http://portil.ncdenr.org/web/wq/ws/su/statesw/forms Blocs. 1. Original and one copy of the Stormwater Management Permit Application Form. 2. Original and one copy of the signed and notarized Deed Restrictions & Protective Covenants Form. (if required as per Part VII below) 3. Original of the applicable Supplement Fornn(s) (sealed, signed and dated) and O&M agreement(s) for each BMP. 4. Permit application processing fee of $505 payable to NCDENR. (For an Express review, refer to http://www.enviielp.org/pages/`onestopexpress.htnnl for information on the Express program and the associated fees. Contact the appropriate regional office Express Permit Coordinator for additional information and to schedule the required application meeting.) 5. A detailed narrative (one to two pages) describing the stormwater treatment/ managementfor the project. This is required in addition to the brief summary provided in the Project Information, item 1. 6. A USGS map identifying the site location. If the receiving stream is reported as class SA or the receiving stream drains to class SA waters within 1/2 mile of the site boundary, include the 1/z mile radius on the map. 9. Sealed, signed and dated calculations. 8. Two sets of plans folded to 8.5" x 14" (sealed, signed, & dated), including: a. Development/Projectname. ✓ b. Engineer and firm. ✓ c. Location map with named streets and NCSR numbers. " d. Legend. ✓ e. North arrow. ✓ f. Scale. ✓ & Revision number and dates. .✓ h. Identify all surface waters on the plans by delineating the normal pool elevation of impounded structures, the banks of streams and rivers, the MHW or NHW line of tidal waters, and any coastal wetlands landward of the MHW or NHW lines. • Delineate the vegetated buffer landward from the normal pool elevation of impounded structures, the banks of streams or rivers, and the MHW (or NHW) of tidal waters. L Dimensioned property/project boundary with bearings & distances. ✓ j. Site Layout with all BUA identified and dimensioned. ✓ k. Existing contours, proposed contours, spot elevations, finished floor elevations. ✓ 1. Details of roads, drainage features, collection systems, and stormwater control measures. ✓ m. Wetlands delineated, or a note on the plans that none exist. (Must be delineated by a qualified person. Provide documentation of qualifications and identify the person who made the determination on the plans. n. Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations. o. Drainage areas delineated (included in the main set of plans, not as a separate document). p. Vegetated buffers (where required). OiR Form SWU-101 Version 07Jun2010 Page 4 of 6 9. Copy of any applicable soils i rt with the associated SFIWT elevations (I ,e identify previously elevations in addition to depth.,, as well as a map of the boring locations witn the existing ro�v-ded elevations and boring logs. Include an 8.5"xll" copy of the NRCS County Soils map with the project area clearly delineated. For projects with infiltration BMPs, the report should also include the soil type, expected infiltration rate, and the method of determining the infiltration rate. (Infiltration Devices submitted to WiRO: Schedule a site visit for DWQ to verifij the SHWT prior to submittal, (970) 796-7378.) 10. A copy of the most current property deed. Deed book: Military Page No- ll. For corporations and limited liability corporations ([-LC): Provide documentation from the NC B Secretary of State or other official documentation, which supports the titles and positions held by the persons listed in Contact Information, item la, 2a, and/or 3a per NCAC 2H.1003(e). The corporation or LLC must be listed as an active corporation in good standing with the NC Secretary of State, otherwise the application will be returned. littp://www.secretary.state.nc.us/Corr)orations/CSearch.aspx VIL DEED RESTRICTIONS AND PROTECTIVE COVENANTS For all subdivisions, outparcels, and future development, the appropriate property restrictions and protective covenants are required to be recorded prior to the sale of any lot. If lot sizes vary significantly or the proposed BUA allocations vary, a table listing each lot number, lot size, and the allowable built -upon area must be provided as an attachment to the completed and notarized deed restriction form. The appropriate deed restrictions and protective covenants forms can be downloaded from htt �: �ortal.ncdenr.ora/web/wq/ws/su/shntesw/forms does. Download the latest versions for each submittal. In the instances where the applicant is different than the property owner, it is the responsibility of the property owner to sign the deed restrictions and protective covenants form while the applicant is responsible for ensuring that the deed restrictions are recorded. By the notarized signature(s) below, the permit holder(s) certify that the recorded property restrictions and protective covenants for this project, if required, shall include all the items required in the permit and listed on the forms available on the website, that the covenants will be binding on all parties and persons claiming under them, that they will run with the land, that the required covenants cannot be changed or deleted without concurrence from the NC DWQ and that they will be recorded prior to the sale of any lot. VIII. CONSULTANT INFORMATION AND AUTHORIZATION Applicant: Complete this section if you wish to designate authority to another individual and/or firm (such as a consulting engineer and/or firm) so that they may provide information on your behalf for this project (such as addressing requests for additional information). Consulting Engineer: Kevin Avolis, P.E. Consulting Firm: Avolis Engineering, P.A. Mailing Address: P.O. Box 15564 City: New Bern Phonc: (252 ) 633-0068 Email: avolisen,,int ceringOOembaromail.com State: NC Zip: 28561 Fax: (252 ) 633-6507 IX. PROPERTY OWNER AUTHORIZATION (if Contact Information, item 2 has been filled out, complete this section) I, (print or type name of person listed in Contact Information, item 2a) , certify that I own the property identified in this permit application, and thus give permission to (print or h/pe name of person listed in Contact Infonuation, item la) with (print or hype name of organization listed in Contact Information, item la) to develop the project as currently proposed. A copy of the lease agreement or pending property sales contract has been provided with the submittal, which indicates the party responsible for the operation and maintenance of the stormwater system. Form SWU-101 Version 07Jun2010 Page 5 of As the legal property owner I acl vledge, understand, and agree by my sig: re below, that if my designated agent (entity listed in Contact Info..nation, item 1) dissolves their company ano/ or cancels or defaults on their lease agreement, or pending sale, responsibility for compliance with the DWQ Stormwater permit reverts back to me, the property owner. As the property owner, it is my responsibility to notify DWQ immediately and submit completed Name/Ownership Change Form within 30 days; otherwise I will be operating a stormwater treatment facility without a valid permit. I understand that the operation of a stormwater treatment facility without a valid permit is a violation of NC General Statue 143-215.1 and may result in appropriate enforcement action including the assessment of civil penalties of up to $25,000 per day, pursuant to NCGS 143-215.6. Signature: a Notary Public for the State of do hereby certify that before me this _ day of County of personally appeared and acknowledge the due execution of the application for a stormwater permit. Witness my hand and official seal, SEAL My commission X. APPLICANT'S CERTIFICATION I, (print or type name of person listed in Contact Information, item 1n) GeorUc Radford certify that the information included on this permit application form is, to the best of my knowledge, correct and that the project will be constructed in conformance with the approved plans, that the required deed restrictions and protective covenants will be recordc nd that the proposed project complies with the requirements of the applicable stem ater pi1@g_ut�idy_r/ 5 AC 21-1 .1000, SL 2006-246 (Ph. 11- Post Construction) or SL 2008-211. .? / AJan aO!l a Notary Public for the/State of WC County of �G �.�", do hereby certify that 0%4A 6%el personalty appeared before me thisa/ day of I&ICA 00// , and aj�}��� nowled eett e due,execution of the application for a stormwater yq'f)}i�. Witness my hand and official seal, /A Cf icfGf / (�� d(J/I1/ Q SEAL r�13L1 c�=. f�l C)�j� i t Cn����� My commission 4 g--�o/s Fonn S WU-101 Version 07Jun2010 Page 6 of 6 Permit (to be provided by D WQ) *ice WDENR 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 (Pail III) must be printed, filled out and submitted along with all of the required information. O-` O� W AT�gO G ti C I,, PR0JECTtINF_ORMATION'"s"^f: -`�.rs '!" ,'.a-' `''_v -x,'" 'max. -..�rw _"�''il ''rsr..: £.� ",n.�;( sw °' Project name Child Development Center, MICAS Cherry Point, North Carolina Contact person Kevin Avolis. PE Phone number Date. Drainage area number 18-Jan-11 11',OESIGNINF.ORMATION . »y Site Characteristics Drainage area Impervious area, post -development % impervious Design rainfall depth Storage Volume: Non -SA Waters Minimum volume required Volume provided Storage Volume: SA Waters 1.5' runoff volume Pre -development 1-yr, 24-hr runoff Post -development 1-yr, 24-hr runoff Minimum volume required Volume provided Peak Flow Calculations Is the prelpost control of the lyr 24hr storm peak Flow required? 1-yr, 24-hr rainfall depth Rational C, pre -development Rational C, post -development Rainfall intensity: 1-yr, 24-hr storm Pre -development 1-yr, 24-hr peak now Post -development 1-yr, 24-hr peak flow Pre/Post 1-yr, 24-hr peak flow control Elevations Temporary pool elevation Permanent pool elevation SHWT elevation (approx. at the perm. pool elevation) Top of 10ff vegetated shelf elevation Bottom of 10ff vegetated shelf elevation Sediment cleanout, lop elevation (bottom of pond) Sediment cleanout, bottom elevation Sediment storage provided Is there additional volume stored above the state -required temp. pool? Elevation of the lop of the additional volume 383,228 112 ✓ 129,823 fe v 33.88 % ✓ 1.5 in 16,244 flu 22,668 ft3 NIA ff3 tt3 tt3 ff3 Y (Y or N) 3.9 in Insufficient required volume. it 65� OK, volume provided is equal to or in excess of volume required. ✓ 0.43 (unitless) 0.52 (unitless) 0.16 irdhr OK 13,20 1 14,90 ff3/sec 1.70 It"/sec 20.15 Int 19.00 first 18.50 fmsl 19.50 first 18.50 fmsl Data not needed for calculation option p1, but OK if provided. 13.00 fmsl - 12.00 fmsl Data not needed for calculation option It, but OK if provided. 1.00 If Y (Y or N) 21.6 fmsl Insufficient. Must equal the temp. pool elev. previously entered Form SW401-Wet Detention Basin -Rev .8-9117/09 Pans 1.811. Design Summary, Page 1 of 2 Permit No. go be pmvNetl by OWO) m� <., w,..v d(,VYw ie..vuw.�,.,5%ai,;,ai..: ��ti.::'iw-.,.n„s.l#iuri.:':._i.uW.?'ipE,;.,az..,el ?kE .@t4fitre-Ts 4 "''Y`.r,+ xsu, n ,:4c ecr ze; IIP'KDESIGNANFORMATION„v �sos<.,r Y HpA ,l�pS nav 0. r ' tl e m � Surface Areas Area, temporary pool Area REQUIRED, permanent pool SAIDA ratio Area PROVIDED, permanent pool, A... Area, bottom of 1Oft vegetated shelf, Aw a,al Area, sediment cleanout, top elevation (bottom of pond), Aye, m„d Volumes Volume, temporary pool Volume, permanent pool, Vp,.,,, P, Volume, forebay (sum of forebays if more than one forebay) Forebay % of permanent pool volume SAIDA Table Data Design TSS removal Coastal SAIDA Table Used? Mountain/Piedmont SAIDA Table Used? SAIDA ratio Average depth (used in SAIDA table): Calculation option 1 used? (See Figure 10-2b) Volume, permanent pool, V. roil Area provided, permanent pool, A.-. Average depth calculated Average depth used in SAIDA, it., (Round to nearest 0.5ft) Calculation option 2 used? (See Figure 10-2b) Area provided, permanent pool, A.-. Area, bottom of 1Oft vegetated shelf, Ae„ wai Area, sediment cleanout, top elevation (bottom of pond), A.,..d 15,324 ft' 11,535 ft' 3.01 (unitless) 11,834 ft' OK 9,519 ft' 3,360 ft' 16,244 ft' 47,267 ft' 10,783 ft' 22.8% % 90 % Y (Y or N) N (Y or N) 3.01 (unitless) Y (Y or N) 47,267 ft' 11,834 ft' Insufficient. Volume does not agree with data previously entered. Insufficient forebay volume. 4.17 ft OK 4.0ft OK N (Y or N) 11,834 ft' 9,519 ft' 3,360 ft' 'Depth' (distance blw bottom of 10ft shelf and top of sediment) 5.50 ft Average depth calculated It Average depth used in SAIDA, d,v, (Round to nearest 0.511 It Drawdown Calculations Drawdown through orifice? Diameter of orifice (if circular) Area of orifice (if -non -circular) Coefficient of discharge (CD) Driving head (Ho) Drawdown through weir? Weir type Coefficient of discharge (C„.) Length of weir (L) Driving head (H) Pre -development 1-yr, 24-hr peak flow Post -development 1-yr, 24-hr peak flow Storage volume discharge rate (through discharge orifice or weir) Storage volume dmwrlown time Additional Information Vegetated side slopes Vegetated shelf slope Vegetated shelf width Length of 0owpath to width ratio Length to width ratio Trash rack for overflow & orifice? Freeboard provided Vegetated filter provided? Recorded drainage easement provided? Capures all mnoft at ultimate build -out? Drain mechanism for maintenance or emergencies is: Foam SW401-Wei Detention Basin-Rev.8-9117/09 Y (Y or N) 2.25 in in2 0.60 (unitless) 1.15 It N (Y or N) (unitless) ft If 13.20 ft'/sec 14.90 ft'Isec 0.08 fli 2.30 days 5N 10 :1 10.0 ft 3 :1 3.0 :1 OK, draws down in 2-5 days. OK OK OK OK OK Y (Y or N) OK 2.0 It OK N (Y or N) OK Y (Y or N) OK, Y (Y or N) OK Pump Pans I. & II. Design Summary, Page 2 of 2 Permit (to be provided by DWQ) W �`81"au 11 -J, t ...r77 K';'YgN'€ tW'III:hREQUIRED ITEMS:CHECKLIST;7 ` r..:. n Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a requirement has not been met, attach justification. Page/ Plan Initjals Sheet No. C-6 1. Plans (1" - 50' or larger) of the entire site showing: - Design at ultimate build -out, - Off -site drainage (if applicable), - Delineated drainage basins (include Rational C coefficient per basin), - Basin dimensions, - Pretreatment system, - High Flow bypass system, - Maintenance access, - Proposed drainage easement and public right of way (ROW), - Overflow device, and - Boundaries of drainage easement. _ C-7 2. Partial plan (1" = 30' or larger) and details for the wet detention basin shoving: 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. i C-7 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. C-7 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. C-7 5. A table of elevations, areas, incremental volumes & accumulated volumes for overall pond and for forebay, to verity volume provided. G-1 6. A construction sequence that shows how the wet detention basin will be protected from sediment until the entire drainage area is stabilized. Attached 7. The supporting calculations. Attached 8. A copy of the signed and notarized operation and maintenance (0&M) agreement. N/A 9. A copy of the deed restrictions (if required). 10. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. County soil maps are not an acceptable source of soils information. Form SW401-Wet Detention Basin-Rev.8-9117/09 Part III. Required Items Checklist, Page 1 of 1 Permit Number. (to be provided by DWQ) Drainage Area Number. l_ Wet Detention Basin Operation and Maintenance Agreement I will keep a maintenance record on this BMP. This maintenance record will be kept in a log in a known set location. Any deficient BMP elements noted in the inspection will be corrected, repaired or replaced immediately. These deficiencies can affect the integrity of structures, safety of the public, and the removal efficiency of the BMP. The wet detention basin system is defined as the wet detention basin, pretreatment including forebays and the vegetated filter if one is provided. This system (check one): ❑ does ❑ does not incorporate a vegetated filter at the outlet. This system (check one): ❑ does ® does not incorporate pretreatment other than a forebay. Important maintenance procedures: — Immediately after the wet detention basin is established, the plants on the vegetated shelf and perimeter of the basin should be watered twice weekly if needed, until the plants become established (commonly six weeks). — No portion of the wet detention pond should be fertilized after the first initial fertilization that is required to establish the plants on the vegetated shelf. Stable groundcover should be maintained in the drainage area to reduce the sediment load to the wet detention basin. — If the basin must be drained for an emergency or to perform maintenance, the flushing of sediment through the emergency drain should be minimized to the maximum extent practical. — Once a year, a dam safety expert should inspect the embankment. 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 l of 4 Permit Numbei provided by DWQ) Drainage Area Number: BMP element: Potentialproblem: How I will remediate theproblem: The inlet device: pipe or Swale The pipe is clogged. Unclog the pipe. Dispose of the 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 fore bay 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.4 page 2 of 4 Permit Numbe,. (to be provided by DWQ) Drainage Area Number: 1 BMP element: Potential problem How 1 will remediate theproblem: The embankment Shrubs have started to grow Remove shrubs immediately. on the embankment. Evidence of muskrat or Use traps to remove muskrats and beaver activity is present. consult a professional to remove beavers. A tree has started to grow on Consult a dam safety specialist to the embankment. remove the tree. An annual inspection by an Make all needed repairs. appropriate professional shows that the embankment needs repair. if applicable) The outlet device Clogging has occurred. Clean out the outlet device. Dispose of the sediment off -site. The outlet device is damaged Repair or replace the outlet device. The receiving water Erosion or other signs of Contact the local NC Division of damage have occurred at the Water Quality Regional Office, or outlet. the 401 Oversight Unit at 919-733- 1786. The measuring device used to determine the sediment elevation shall be such that it will give an accurate depth reading and not readily penetrate into accumulated sediments. When the permanent pool depth reads 6 feet in the main pond, the sediment shall be removed. When the permanent pool depth reads 6 feet in the forebay, the sediment shall be removed. Sediment Removal Bottom 13.0 ----------------- FOREBAY BASIN DIAGRAM (fill in the blanks) Ift Min. Sediment Storage Permanent Pool Elevation 19.0 Pool �- Sediment Removal Elevation 13.0 volume Bottom Elevation MAIN POND ale Storage Form SW401-Wet Detention Basin O&M-Rev.4 Page 3 ol'4 Permit Number (to be provided by DIVA 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:Child Development Center (Contract No N40085-06-D-4010-0005) I3M1' (b-ainage area number:I Print name: Title: Director. Environmental Affairs Address:PSC 8006 MICAS Cherry Point NC 28533-0013 Signaturc:u LC___1 Date: .2 / �oi0 Note: The legally responsible party should not be a homeowners association unless more than 50% of the lots have been sold and a resident of the subdivision has been named the president. 1, ,4W4 C, , a Notary Public for the State of County 01' 'a/ //"_, .,-/ , do hereby certify that f Ia Z& Z personally appeared before me this aL day of 090// and acknowledge the due execution of the forgoing yet ddeten ion basin maintenance requirements. Witness my hand and official seal, G(/L�TeiGll-fair W���/A�i Q� P ?i N� NOT-ARY AU80C lllfil}FN�`, SEAL My commission expires i' f- Form SW401-Wet Detention Basin O&M-Rev.4 Page 4 of 4 Vinson, Scott From: Vinson, Scott Sent: Tuesday, December 07, 2010 10:50 AM To: 'Stewart CIV Ruan' Cc: Dumpor, Samir Subject: FW: Child Development Center (CDC) Ruan, Overall we believe that although the pond is not functioning like it's designed to by not holding it's permanent pool level of water, it is likely to be doing a better job and storing larger storms & discharging less than currently designed. One concern is that when or if the pond starts holding water back up at it's designed permanent pool elevation, the wetland vegetation will need to be planted on the vegetated perimeter shelf. For the time being, we are good with the proposed plan to sod the banks to keep them stable until such time as the permanent pool rises up to the design elevation. Please keep us 'informed as to the function of this pond as time goes by. Thanks, Scott PS I received your email but Samir did not. Please note that our email addresses have changed from ... @ncmail.net to .... @ncdenr.gov Maybe this is why. NOTE: Please update your address book with my new email address Scott.Vinson(dncdenr.gov Please consider the environment before printing this e-mail. *E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to third parties. -----Original Message ----- From: Stewart CIV Ruan [mailto:ruan.stewart@usmc.mil] Sent: Monday, December 06, 2010 8:21 AM To: samir.dupor@ncmail.net; scott.vinson@ncmail.net Subject: Child Development Center (CDC) Hi Gentlemen, I would like you to give me some guidance on the wet pond constructed at the CDC and was given permit number SW7090710. The problem is that the permanent pool is nowhere near the level it suppose to be base on the calculations submitted by Avolis Engineering. The pond is basically functioning as a dry pond. I did not get the chance to make a thorough design calculation check because of other deadlines I have to meet. However, the pond is doing its job. Avolis Engineering wants to sod the entire permanent pool self and hoping that if the permanent pool reestablishes it would kill the grass. Frankly, I have no problem for them to do it as long as the Government will not incur additional charge. Also, the sodding will prevent erosion of the permanent pool area. Please let me know what you think as soon as possible. Thanks, 1 k l2Q DWQ USE ONLY Date Received Fee Paid Permit Number atco 5WgC)CJ1z) e u+ 6 -0 4wo cr�4 � 2s39 C LQ = 4U Wal) State of North Carolina JUL 22 2009 Department of Environment and Natural Resources NC DENR Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM This form may be photocopied for use as an original 1. GENERAL INFORMATION 1. Applicants name (specify the name of the corporation, individual, etc. who owns the project): Marine Corps Air Station Cherry Point North Carolina 2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance): Mr.. George W. Radford Environmental Affairs Officer - By Direction of the Commanding Officer 3. Mailing Address for person listed in item 2 above: PSC Box City: Cherry Point Phone: (959 ) 466-4599 Email: george.radford@usmc.mil State: NC Zip:28533 Fax: (252 ) 466-2000 4. Project Name (subdivision, facility, or establishment name -should be consistent with project name on plans, specifications, letters, operation and maintenance agreements, etc.): Child Development Center MCAS Cherry Point, North Carolina Construction Contract No. N40085-06-D-4010-0005 5. Location of Project (street address): Woodside Drive MCAS Cherry Point City: Havelock County: Craven Zip: 28533 6. Directions to project (from nearest major intersection): Proceed from main gate off of NC Highway 101 along Roosevelt Boulevar. Proceed past MCX Exchange. Project site is on left next to existing Child Development Center. 7. Latitude:34° 54' 6" N Longitude:76° 54' 30" W of project 8. Contact person who can answer questions about the project: Name: Kevin Avolis, P.E. Telephone Number: (252 ) 633-0068 Email: avolisengineeringQembargmail.com IL PERMIT INFORMATION: 1. Specify whether project is (check one): /1 - ❑Renewal ❑Modification Form SWU-101 Version 09.25.08 Page I of 4 -2. 'If this application is being submitted as the result of a renewal or modification to an existing permit, list the existing permit number N/A and its issue date (if known) 3. Specify the type of project (check one): ❑Low Density ®High Density ❑Redevelop ❑General Permit ❑Universal SMP ❑Other 4. Additional Project Requirements (check applicable blanks; information on required state permits can be obtained by contacting the Customer Service Center at 1-877-623-6748): ❑CAMA Major ®Sedimentation/Erosion Control ❑404/401 Permit ❑NPDES Industrial Stormwater III. PROJECT INFORMATION 1. In the space provided below, summarize how stormwater will be treated. Also attach a detailed narrative (one to two pages) describing stormwater management for the project. See Attached Narrative 2. Stormwater runoff from this project drains to the Neuse River basin. 3. Total Property Area: 7.94 acres 4. Total Coastal Wetlands Area: 0 acres 5. Total Property Area (3) — Total Coastal Wetlands Area (4) = Total Project Area**: 7.94 acres 6. (Total Impervious Area / Total Project Area) X 100 = Project Built Upon Area (BUA): 32.8 % 7. How many drainage areas does the project have? I 8. Complete the following information for each drainage area. If there are more than two drainage areas in the project, attach an additional sheet with the information for each area provided in the same format as below. For high density projects, com lete the table with one drainage area for each engineered stormwater device. Basin Information Drainage Area 1 Drainage Area 2 Receiving Stream Name Sandy Branch Stream Class & Index No. C, Sw, NSW 27-112-2-3 Total Drainage Area (so 346,070 SF, 7.94 Ac On -site Drainage Area (so 346,070 SF, 7.94 AC Off -site Drainage Area (so 0 Existing Impervious* Area (so 0 Proposed Impervious*Area (so 113,352 SF, 2.60 AC % Impervious* Area (total) 32.8% Impervious* Surface Area Drainage Area 1 Drainage Area 2 On -site Buildings (so 30,620 SF, 0.70 AC On -site Streets (so On -site Parking (so 64,496 SF, 1.48 AC On -site Sidewalks (so 11,672 SF, 0.15 AC Other on -site (so 6,564 SF, 0.15 AC Off -site (so Total (so: 113,352 SF, 2.60 AC * Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas, sidewalks, gravel areas, etc. **Total project area shall be calculated to exclude Coastal Wetlands from use when calculating the built upon area percentage calculation. This is the area used to calculate overall percent project built upon area (BUA). Form SWU-101 Version 09.25.08 Page 2 of 4 9. How was the off -site impervious area listed above derived? Projects in Union County: Contact the DWQ Central Office staff to check to see if you project is located within a Threatened & Endangered Species watershed that may be subject to more stringent stormwater requirements. IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS One of the following property restrictions and protective covenants are required to be recorded for all subdivisions, outparcels and future development prior to the sale of any lot. If lot sizes vary significantly, a table listing each lot number, size and the allowable built -upon area for each lot must be provided as an attachment. Forms can be downloaded from httl2://h2o.enr.state.nc.us/su/bml2 forms htm - deed restrictions. Form DRPC-1 High Density Commercial Subdivisions Form DRPC-2 High Density Developments with Outparcels Form DRPC-3 High Density Residential Subdivisions Form DRPC-4 Low Density Commercial Subdivisions Form DRPC-5 Low Density Residential Subdivisions Form DRPC-6 Low Density Residential Subdivisions with Curb Outlets By your signature below, you certify that the recorded property restrictions and protective covenants for this project shall include all the applicable items required in the above form, that the covenants will be binding on all parties and persons claiming under them, that they will run with the land, that the required covenants cannot be changed or deleted without concurrence from the NC DWQ, and that they will be recorded prior to the sale of any lot. V. SUPPLEMENT FORMS The applicable state stormwater management permit supplement form(s) listed below must be submitted for each BMP specified for this project. Contact the Stormwater Permitting Unit at (919) 807-6300 for the status and availability of these forms. Forms can be downloaded from httl2://h2o.enr.state.nc.us/su/bml2 forms.htm. Form SW401-Low Density Form SW401-Curb Outlet System Form SW401-Off-Site System Form SW401-Wet Detention Basin Form SW401-Infiltration Basin Form SW401-Infiltration Trench Form SW401-Bioretention Cell Form SW401-Level Spreader Form SW401-Wetland Form SW401-Grassed Swale Form SW401-Sand Filter Form SW401-Permeable Pavement Form SW401-Cistern Low Density Supplement Curb Outlet System Supplement Off -Site System Supplement Wet Detention Basin Supplement Infiltration Basin Supplement Underground Infiltration Trench Supplement Bioretention Cell Supplement Level Spreader/Filter Strip/Restored Riparian Buffer Supplement Constructed Wetland Supplement Grassed Swale Supplement Sand Filter Supplement Permeable Pavement Supplement Cistern Supplement Form SWU-101 Version 09.25.08 Page 3 of 4 VI. SUBMITTAL REQUIREMENTS Only complete application packages will be accepted and reviewed by the Division of Water Quality (DWQ). A complete package includes all of the items listed below. The complete application package should be submitted to the appropriate DWQ Office. (Appropriate office may be found by locating project on the interactive online map at http://h2o.enr.state.nc.us/su/msi maus.htm) Please indicate that you have provided the following required information by initialing in the space provided next to each item. Initials • Original and one copy of the Stormwater Management Permit Application Form • Original and one copy of the Deed Restrictions & Protective Covenants Form (if required as per Part IV above) • Original of the applicable Supplement Form(s) and O&M agreement(s) for each BMP • Permit application processing fee of $505 (Express: $4,000 for HD, $2,000 for LD) payable to NCDENR • Calculations & detailed narrative description of stormwater treatment/management rk • Copy of any applicable soils report • Two copies of plans and specifications (sealed, signed & dated), including: . ,7 - Development/Project name - Engineer and firm -Legend - North arrow - Scale - Revision number & date - Mean high water line - Dimensioned property/project boundary - Location map with named streets or NCSR numbers - Original contours, proposed contours, spot elevations, finished floor elevations - Details of roads, drainage features, collection systems, and stormwater control measures - Wetlands delineated, or a note on plans that none exist - Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations - Drainage areas delineated - Vegetated buffers (where required) VIL AGENT AUTHORIZATION If you wish to designate authority to another individual or firm so that they may provide information on your behalf (such as additional information requests), please complete this section. (ex. designing engineer or firm) Designated agent (individual or firm): Avolis Engineering, P.A. Mailing Address: P.O. Box 15564 City: New Bern State: NC Zip: 28561 Phone: (252 ) 633-0068 Fax: (252 ) 633-6507 Email: avolisengineerineembargmail.com VIII. APPLICANT'S CERTIFICATION 1, (print or type name of person listed in General Information, item 2) certify that the information included on this permit application form is, to the best of my knowledge, correct and that the project will be constructed in conformance with the approved plans, that the required deed restrictions and protective covenants will be recorded, and that the proposed project complies with the requirements of 15A NCAC 2H .10 Signature. / ���/� r' `� (/�l, �L lii- DJ(J a� �6 n o eq m"4 Form SWU-101 Version 09.25.08 Page 4 of 4 �J ANorth Carolina Department of Environment and O Natural Resources � NCDENR Request for Express Permit Review For DENR Use ONLY �1 Reviewer: Submit Time: Confirm FILL-IN all the information below and CHECK the Permit(s) you are requesting for express review. FAX or Email the completed form to Express Coordinator along with a completed DETAILED narrative, site plan (PDF rile) and vicinity map (same items expected in the application package of the project location. Include this form in the application package. • Asheville Region -Alison Davidson 828.296-4698;alison.davidson(a)ncmail.net • Fayetteville or Raleigh Region -David Lee 919-791-4203; david.lee(7ancmail.neI QL • Mooresville & -Patrick Grogan 704-663.3772 or Patrick.grogan(7ancmail.net • Washington Region -Lyn Hardison 252.946.9215 or Iyn.hardison(ancmail.net • Wilmington Region -Janet Russell 910-350-2004 or janet.russell(ai ncmail.net NOTE: Project application received after 12 noon will be stamped in the following work day. 5 110'ID'1071 O Project Name: CHILD DEVELOPMENT CENTER County: CRAVEN Applicant: COMMANDING OFFICER Company: MCAS CHERRY POINT Address: MICAS CHERRY POINT City: HAVELOCK, State: NC Zip: 28532 EXPRESS Phone:252-466-5376 Fax: - - Email: _ Project is Drains into SANDY BRANCH waters Project Located in NEUSE River Basin JUL 2 2 2009 Engineer/Consultant: KEVIN AVOLIS, P.E. Company: AVOLIS ENGINEERING, P.A. Address: P.O. BOX 15564 City: NEW BERN, State: NC Zip: 28561 NC DENR Phone:252-633-0068 Fax::252-633-6507 Email: AVOLISENGINEERINGaa(..EMBARQMAIL.COM (Check all that apply) ❑ Scoping Meeting ONLY ❑ DWQ, ❑ DCM, ❑ DLR, ❑ OTHER: ❑ Stream Origin Determination: # of stream calls — Please attach TOPO map marking the areas in questions ® State Stormwater ❑ General ❑ SFR, ❑Bkhd & Bt Rmp, ❑ Clear & Grub, ❑ Utility ❑ Low Density ❑ Low Density -Curb & Gutter _ # Curb Outlet Swales ElOff-site[SW (Provide permit #)] ® High Density -Detention Pond 1 # Treatment Systems ❑ High Density -Infiltration _ #Treatment Systems ❑ High Density -Bio-Retention _ # Treatment Systems ElHigh Density —Constructive Wetlands _ # Treatment Systems ❑ High Density -Other _ # Treatment Systems ❑ MODIFICATION SW (Provide permit #) ❑ Coastal Management ❑ Excavation & Fill ❑ Bridges & Culverts ❑ Structures Information ❑ Upland Development ❑ Marina Development ❑ Urban Waterfront ❑ Land Quality ❑ Erosion and Sedimentation Control Plan with '9 acres to be disturbed.(CK # /a�4�or DENR use)) WETLANDS QUESTIONS MUST BE ADDRESSED BELOW ❑ Wetlands (401): Check all that apply Wetlands on Site ❑ Yes ® No Wetlands Delineation has been completed: ❑ Yes ❑ No US ACOE Approval of Delineation completed: ❑ Yes ❑ No 404 Application in Process w/ US ACOE: ❑ Yes ❑ No Permit Received from US ACOE ❑ Yes ❑ No Fee Split for multiple permits: (Check # 053c ) 4 5aD .ea Isolated wetland on Property ❑ Yes ® No Buffer Impacts: ® No ❑ YES: acre(s) Minor Variance: ❑ No ❑ YES Major General Variance ❑ No ❑ YES 401 Application required: ❑Yes ❑ No If YES, ❑ Regular Perennial, Blue line stream, etc on site ❑ yes ® No For DENR use only Total Fee Amount $ LMOCD SUBMITTAL DATES Fee SUBMITTAL DATES Fee LAMA $ Variance ❑ ❑ Ma; Min $ SW ❑ HD, LD, ❑ Gen $ 401: $ LQS $ pnr) Stream Deter,_ $ AVOLIS ENGINEERING P.A. \ lLAY P.O. Box 15564 • New Bern, North Carolina 28561 (252) 633-0068 EXPRESS JUL 2 2 2009 July 21, 2009 NC DENR Mr. Al Hodge Environmental Engineer NCIENR- Water Quality Section 943 Washington Square Mall Washington, NC 27889 RI Child Development Center - Marine Corps Air Station, Cherry Point, North Carolina AE Project No. 08098 Dear Al: Enclosed please, find the following for the above -referenced project for your review and approval: • Stormwater Permit with Narrative (Original and One Copy) • Project Plans (2 Copies) Stonnwater Calculations (2 Copies) $4,000 Express Permit Pee It is requested that you review the permit package at your earliest convenience. Should you have any questions relating to this matter or need any additional information, please do not hesitate to call. Sincerely Kevin Avolis, P.E. President cc: Virtexco MICAS Cherry Point Vinson, Scott From: Avolis Engineering, P.A.[avolisengineering@embargmail. com] Sent: Wednesday, July 22, 2009 4:08 PM To: Vinson, Scott Subject: Child Development Cente, Cherry Point Attachments: CDC cherry Point.pdf Scott: Thank you for your time today. I have modeled the drawdown of the 1 1/2" design volume as requested. The attached calcs depict the draw down occurring in excess of 48 hours, (somewhere between 48 and 54 hours). The 2 1/4" orifice size appears satisfactory. Let me know if there are any comments or questions Thank You Kevin Avolis f-V STORMWATER POND CALCULATIONS COASTAL STORMWATER DESIGN CHILD DEVELOPMENT CENTER MCAS, CHERRY POINT HAVELOCK, NORTH CAROLINA ADDED 7/22/09-CHECKED 1 Y" DRAWDOWN IS 48 HOURS<T<120 SIZED POND AND ORIFICE: SITE DATA FAL 73 738 Dy'FNGINE�QS0 nr�G� I D TOTAL SITE WATERSHEAD AREA = 346070 SF 7.94 BUILDING AREA = 30620 SF 0.70 SIDEWALK AREA/PLAYGROUND AREA = 18236 SF 0.42 PARKING/DRIVE AREA = 64496 SF 1.48 GRASS AREA = 232718 SF 5.34 TOTAL BUILT - UPON AREA = 113352 SF 2.60 % BUA = DETERMINE POND SURFACE AREA REQUIREMENT AT PERMANENT POOL REFERENCE SAIDA TABLE 32.8 % YES NO 85% TSS REMOVAL WITH 30- VEGATATIVE FILLER 90% TSS REMOVAL FOR WET DETENTION WITHOUT VEGETATIVE FILTER X X SET AVERAGE PERMANENT POOL DEPTH = SAIDA LOW (30%) _ SAIDA HIGH (40%) _ % IMPER(ACTUAL%) _ % IMPERVIOUS LOW = INTERPOLATED SAIDA VALUE _ REQUIRED SURFACE AREA = APPROXIMATE POND WIDTH = APPROXIMATE POND DIMENSIONS = SET PERMANENT POOL AREA AT: 11,838 SF CALCULATE 1 1/2" STORM RUNOFF VOLUME 3.5 FT 3 4 32.8 % 30 % 3.28 11,334 SF FT FT X ERR FT USE SIMPLIFIED METHOD (SEEPAGE 7 OF CALCULATIONS) 1 1/2-INCH STORM VOLUME = 14,915 CUBIC FEET SET PERMANENT POOL LEVEL AT: 0' STAGE _ DETERMINE POND STAGE RISE ASSOCIATED WITH 1 1/2" STORM 19 FT ELEVATION STAGE FT SURFACE AREA INCREMENTAL VOL FT ` CUMM. VOL FT STORM VOL. FT -10 0 0 0 -9 0 0 0 -8 0 0 0 -7 0 0 0 -6 5075 0 0 -5 5811 5,443 5,443 -4 6579 6,195 11,638 -3 7379 6,979 18,617 -2 8211 7,795 26,412 -1 9075 8,643 35,055 0 11838 9,988 45,043 0 1 15086 12,406 57,449 13,888 2 16675 15,881 73,330 29,769 3 18321 17,498 90,828 47,267 4 20023 19,172 110,000 66,439 5 21782 20903 130,903 87,342 6 0 O 130.903 87,342 7 0 0 130,903 87,342 8 0 0 130,903 87,342 9 0 0 130,903 87,342 10 0 0 130,903 87,342 CALCULATE 2" STORM RISE BETWEEN: 19 FT & 20 FT THE STORED RUNOFF = 13,888 FT3 REMAINING VOLUME TO BE STORED ABOVE 20' CONTOUR = RISE ABOVE 20 FT CONTOUR = 0.060 FT (1027/14,915=0.06) THEREFORE 1 1/2" STORM ELEVATIOP 20.06 FT SAY: STORM STAGE: DETERMINE ORIFICE SIZE TO DRAW DOWN THE 1 1/2" STORM 20.1 FT 1.1 FT 1,027 FT3 1/3 AVAILABLE ORIFICE HEAD = SIZE ORIFICE FOR 3-DAY DRAWDOWN AVERAGE Q REQUIRED = FROM P. III -II OF HRM BASIC ORIFICE EQUATION Q = DISCHARGE(CFS) Co = COEFFICIENT (USE 0.6) A = ORIFICE AREA (SF) Q=CD'A'sgrt( 9 = GRAVITY (32.2 FT/S2) h = DRIVING HEAD FT a 0.37 FT 0.058 FT3/S SOLVE FOR AREA REQUIRED: A=Q/(CD'sgrt(28h)= 0.01965 SF ORIFICE DIAMETER (D) = 0.1580 FT APPROXIMATELY= 1.96" INCHES TRY A 2.25 H DIAMETER ORIFICI =Do CHECK ORIFICE SIZE BY ROUTING THE DRAWDOWN OF THE 1 '/," STORM RUNOFF DISCHARGE TABLE h(FT) Q(CFS) 1.1 0.139 1 0.133 0.9 0.126 0.8 0.119 0.7 0.111 0.6 0.103 0.6 0.094 0.45 0.089 0.4 0.084 0.35 0.079 0.3 0.073 0.25 0.066 0.2 0.059 0.15 0.051 0.1 0.042 0.05 0.030 NOTE: h MEASURED TO CENTER OF ORIFICE Q=(0.6)(PI/4)(Do/12)2Sgrt(2'32.2'h ) INITIAL HEAD = 1.10 FT APPROXIMATE 1" STORM DRAWDOWN USING 6 HOUR INCREMENTS REQUIRED VOLUME = 14,915 FT3 POND HAS 1 1/2" STORM VOLUME AT t=0 G .4 TIME ELAPSED HR h FT Q CFS Q/6 HRS QCUMM VOL. REMAINING FT 6 1.10 0.139 3,012 3,012 0 12 0.88 0.125 2,691 5,703 9,212 18 0.68 0.110 2,367 8,070 6,845 24 0.50 0.094 2,040 10,110 4,805 30 0.35 0.079 1,710 11,820 3,095 36 0.23 0.064 1372 13192 1723 42 .0.13 0.047 1,024 14,215 700 48 0.05 0.030 652 14,868 47 61 0. 0. 0 37 -1 60 -0.01 ERR ERR ERR ERR 66 ERR ERR ERR ERR ERR 72 ERR ERR ERR ERR ERR 78 ERR ERR ERR ERR ERR 84 ERR ERR ERR ERR ERR 90 ERR ERR ERR ERR ERR 96 ERR ERR ERR ERR ERR 102 ERR ERR ERR ERR ERR 108 ERR ERR ERR ERR ERR 114 ERR ERR ERR ERR ERR 120 ERR ERR ERR ERR ERR 101 "NOTE: (ERR) INDICATES THAT THE STORM WATER HAS DRAINED NEARLY LEVEL WITH THE ORIFICE HEIGHT WHICH WILL BE THE HEIGHT OF THE PERMANENT POOL. THERFORE THE 1 1/2" STORM WATER HAS DRAINED WITHIN THE TIME PERIOD OF 2 - 5 DAYS, AND THE RUNOR CONTROL FOR THE POND IS SATISFACTORY. 1Z Z12 � s p f [ 4'R J U L 2 0 2015,`• it ,2� � ^p• Y 1 i JONES RD I FAX RD JIGREENE RE) �FRANKLIN RD STE IL �y til J lt' t or , yl0cun Village i`'"' k N il- %,1 �h 1000 0 500 1000 20( GRAPHIC SCALE: 1" = 10 AVOLIS ENGINEERING, P.A. SITE LOCATION MAP Civil and Environmental Engineering BUILDING4298 P.O. BOX 15564 NEW BERN, NORTH CAROUNA 28561 MARINE CORPS AIR STATION PHONE. (252) 633-0068 FAX: (252) 633-6507 CHERRY POINT, NC Fa DENR Use ONLY eNorth Carolina Department of Environment and ReviewmSubrrd. 1 C Natural Resources NCDENR Request for Express Permit Review Tim confirm FILL-IN all the Information below and CHECK the Permit(s) you are requesting for express review. FAX or Email the completed form to Express Coordinator along with a completed DETAILED narrative site Plan PDF file and vicinity ma same items expected In the application package of the project location. Please include this form in the application package. • Asheville Region -Alison Davidson 828.298.4698;alison.davidsonidncmall.net • Fayetteville or Raleigh Region -David Lee 919-791.4203; davld.lesoncmall.net • Mooresville & -Patrick Grogan 704-663.3772 or patrick.arogan0mcmail.net • Washington Region -Lyn Hardison 252-946.9215 or Ivn.hardisonfalncmall.net • Wilmington Region -Janet Russell 910-350.2004 or ianel.russellAncmall.net NOTE: Project application received after 12 noon will be stamped in the following work day SW SW SW SW SW Project Name: IMPROVEMENTS TO CDC PLAYGROUND AT BLDG 4298 County: CRAVEN Applicant: COMMANDING OFFICER Company: MICAS CHERRY POINT Address: PSC BOX 8006 City: CHERRYPOINT, State: NC Zip: 285L3-_ Phone: 2�2-4f¢4731, Fax: 252-466-474 , Email: glenn.hartzoa@USMC.MIL Physical Location:BUILDING 4298 Project Drains into SANDY BRANCH waters —Water classification C, $W,N W (for dassificabon see-hito:tlh2o.enr.state.nc.us/bims/reports/reportsWB.html) Project Located in NEUSE River Basin. Is project draining to class ORIN waters? N , within % mile and draining to class SA waters N or within 1 mile and draining to class HOW waters? N Engineer/Consultant: JKEVIN AVOLIS, PE Company: AVOLIS ENGINEERING PA fi�i�® Address: P.O. BOX 15564 City: NEW BERN. State: NNQ Zip: 285 1-_ EXPRESS Phone: 2�2-M-Ma, Fax: 252-0- 5 7, Email: avolisenaineedna@embaramail.com SECTION ONE: REQUESTING A SCOPING MEETING ONLY MAR 2 2 2011 ❑ Scoping Meeting ONLY ❑ DINO, ❑ DCM, ❑ DLR, ❑ OTHER: _ NC DENR SECTION TWO: CHECK ONLY THE PROGRAM (S) YOU ARE REQUESTING FOR EXPRESS PERMITTING ❑ 401 Unit ❑ Stream Origin Determination: _ # of stream calls — Please attach TOPO map marking the areas in questions ❑ Intermittent/Perennial Determination: _ # of stream calls — Please attach TOPO map marking the areas in questions ❑ 401 Water Quality Certification ❑ Isolated Wetland (_linear it or _acres) ❑ Riparian Buffer Authorization ❑ Minor Variance ❑ Major General Variance ®'State Stormwater ❑ General ❑ SFR, ❑ SFR < 1 ac. ❑Bkhd & Bt Rmp, ❑ Clear & Grub, ❑ Utility ❑ Other ❑ Low Density ❑ Low Density -Curb & Gutter _ # Curb Ou6el Swales ❑ Off -site [SW _ (Provide permit #)) ❑ High Density -Detention Pond _ # Treatment Systems ❑ High Density -Infiltration _ #Treatment Systems ❑ High Density-Bio-Retent on _ #Treatment Systems El High Density —SW Wetlands _ # Treatmen ems ® High Density -Other 1 # Treatment Systems / ® MOD:❑ Major ❑ Minor ❑ Plan Revision ❑ Redev, elusion SW 7090710 (� e; ,t# ❑ Coastal Management ❑ Excavation & Fill ❑ Bridges & Culverts ❑ Structures In or ❑ Upland Development ❑ Marina Development ❑ Urban Waterfront ® Land Quality ® Erosion and Sedimentation Control Plan with 1.1 acres to be disturbed.(CK # I "3Gu(for DENR use)) $ 1?0 SECTION THREE — PLEASE CHECK ALL THAT IS APPLICABLE TO YOUR PROJECT (for both scopina and express meetino reauest Wetlands on Site ❑ Yes ® No Buffer Impacts: ® No ❑ YES: _acre(s) Wetlands Delineation has been completed: ® Yes ❑ No Isolated wetland on Property ❑ Yes ® No US ACOE Approval of Delineation completed: ❑ Yes ® No 404 Application in Process wl US ACOE: ❑ Yes ® No Permit Received from US ACOE ❑ Yes ❑ No ......................................... I.......... r..-For DENR...... rr.rrrrr<. rr rr......rr..r r Fees lit for multiple ermits: Check# .17 I Total Fee Amount$ I312— SUBMITTAL DATES Fee 111 MITTAL DATES Fee LAMA $ Variance( Mel; Mln) $ SW ( HD, 0 LD, LJ Gen) 1 $ ?jSC P 401: $ L0.S1 $ I Stream Deter,_ $ NCDENR EXPRESS March 2009