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SW8090117_HISTORICAL FILE_20090313
STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO. SW8 0gOIX'1 DOC TYPE ❑ CURRENT PERMIT ❑ APPROVED PLANS HISTORICAL FILE ❑ COMPLIANCE EVALUATION INSPECTION DOC DATE Zoogo3l3 YYYYMMDD WNW North Carolina Department of Environment and Natural Resources Division of Water Quality Beverly Eaves Perdue Coleen H. Sullins Dee Freeman Governor Director Secretary March 13, 2009 Commanding Officer c/o Carl Baker, Deputy Public Works Officer Marine Corps Base, Camp Lejeune Building 1005 Michael Road Camp Lejeune, NC 28547 Subject: State Stormwater Management Permit No. SW8 090117 Bachelor Enlisted Quarters, MCAS P-632 High Density Commercial Wet Detention Pond Project Onslow County Dear Mr. Baker: The Wilmington Regional Office received a complete Stormwater Management Permit Application for Bachelor Enlisted Quarters, MCAS P-632 on March 4, 2009. Staff review of the plans and specifications has determined that the project, as proposed, will comply with the Stormwater Regulations set forth in Title 15A NCAC 21-1.1000 and Session Law 2008-211. We are forwarding Permit No. SW8 090117 dated March 13, 2009, for the construction of the subject project. This permit shall be effective from the date of issuance until March 13, 2019, 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 Christine Nelson, or me at (910) 796-7215. /Siinncc/erellyy, 1G &-e�`� Georgette Scott Stormwater Supervisor Division of Water Quality GDS/ can: S:\WQS\STORMWATER\PERMIT\090117.mar09 cc: Rodney Wright, Coastal Site Design, PC Onslow County Building Inspections Christine Nelson CWilmngton.Regional Office Central Files Wilmington Regional Office 127 Cardinal Drive Extension, Wilmington, North Carolina 28405 One Phone: 910-796-7215 \ FAX: 910-350-2004 \ Customer Service: 1-877-623-6748 NorthCarolina Internet: www.ncwaterquality,org a �j�tl�N//� An Equal Opportunity l Affirmative Action Employer ` {al State Stormwater Management Systems Permit No. SW8 090117 STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF WATER QUALITY STATE STORMWATER MANAGEMENT PERMIT HIGH DENSITY COMMERCIAL DEVELOPMENT In accordance with the provisions of Article 21 of Chapter 143, General Statutes of North Carolina as amended, and other applicable Laws, Rules, and Regulations PERMISSION IS HEREBY GRANTED TO Commanding General & MCB Camp Lejeune Bachelor Enlisted Quarters, MCAS P-632 Douglas Road, MCB Camp Lejeune, Onslow County . FOR THE construction, operation and maintenance of a wet detention pond in compliance with the provisions of 15A NCAC 2H 1000 and Session Law 2008-211 (hereafter collectively and separately referred to as the "stormwater rules') 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 13, 2019, and shall be subject to the following specified conditions and limitations: I. DESIGN STANDARDS This permit is effective only with respect to the nature and volume of stormwater described in the application and other supporting data. This stormwater system has been approved for the management of stormwater runoff as described in Section 1.8 on page 3 of this permit. The stormwater control has been designed to handle the runoff from 193,087 square feet of impervious area. A 50' wide vegetative buffer must be provided adjacent impounded structures, streams, rivers and tidal waters. 4. A vegetated filter strip is not required for this wet detention pond as it is designed to have a 90% TSS removal rate. 5. The tract will be limited to the amount of built -upon area indicated on page 3 of this permit and per approved plans. This permit does not provide any allocation of built -upon area for future development. Page 2 of 8 State Stormwater Management Systems Permit No. SW8 090117 6. 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. 7. The runoff from all built -upon area within the permitted drainage area(s) of this project must be directed into the permitted stormwater control system. 8. The following design criteria have been provided in the wet detention pond and must be maintained at design condition: a. Drainage Area, acr9s: 9.12 Onsite, ft. : 397,376 Offsite, ft2: none b. Total Impervious Surfaces, ftz: 193,087 c. Design Storm, inches: 1.5 d. Average Pond Design Depth, feet: 4 e. TSS removal efficiency: 90% f. Permanent Pool Elevation, FMS.�: 15.0 g. Permanent Pool Surface Areq, ft : 20,519 h. Permitted Storage Volume, ft. : 25,402 i. Temporary Storage Elevation, FMSL: 16.1 j. Pre-dev. 1 yr-24 hr. discharge rate, cfs:0.19 k. Controlling Orifice: 2.0" 0 pipe I. Orifice flowrate, cfs: 0.07 m. Permitted Forebay Volume, ft3: 34,305 n. Fountain Horsepower 1/3 o. Receiving Stream/River Basin: UT to Southwest Creek / White Oak p. Stream Index Number: 19-17-(0.5) q. Classification of Water Body: "C, NSW' II. SCHEDULE OF COMPLIANCE The stormwater management system shall be constructed in its entirety, vegetated and operational for its intended use prior to the construction of any built -upon surface. 2. During construction, erosion shall be kept to a minimum and any eroded areas of the system will be repaired immediately. 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. d. Immediate repair of eroded areas. e. Maintenance of all slopes in accordance with approved plans and specifications. f. Debris removal and unclogging of outlet structure, orifice device, flow spreader, catch basins and piping. g. Access to the outlet structure must be available at all times. 4. Records of maintenance activities must be kept and made available upon request to authorized personnel of DWQ. The records will indicate the date, activity, name of person performing the work and what actions were taken. Page 3 of 8 State Stormwater Management Systems Permit No. SW8 090117 5. 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 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 1/3 horsepower. 6. 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. 7. Upon completion of construction, prior to issuance of a Certificate of Occupancy, and prior to operation of this permitted facility, a certification must be received from an appropriate designer for the system installed certifying that the permitted facility has been installed in accordance with this permit, the approved plans and specifications, and other supporting documentation. Any deviations from the approved plans and specifications must be noted on the Certification. A modification may be required for those deviations. 8. If the stormwater system was used as an Erosion Control device, it must be restored to design condition prior to operation as a stormwater treatment device, and prior to occupancy of the facility. 9. Access to the stormwater facilities for inspection and maintenance shall be maintained via appropriate recorded easements at all times. 10. 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 development, subdivision, acquisition, lease or sale of any, 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. 11. Prior to the construction of any permitted future areas shown on the approved plans, the permittee shall submit final site layout and grading plans to the Division for approval. Page 4 of 8 State Stormwater Management Systems Permit No. SW8 090117 12. A copy of the approved plans and specifications shall be maintained on file by the Permittee at all times. 13. The Director may notify the permittee when the permitted site does not meet one or more of the minimum requirements of the permit. Within the time frame specified in the notice, the permittee shall submit a written time schedule to the Director for modifying the site to meet minimum requirements. The permittee shall provide copies of revised plans and certification in writing to the Director that the changes have been made. P III. GENERAL CONDITIONS This permit is not transferable to any person or entity except after notice to and approval by the Director. In the event of a change of ownership, or a name change, the permittee must submit a completed Name/Ownership Change Form signed by both parties, to the Division of Water Quality, accompanied by the supporting documentation as listed on page 2 of the form. 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. Neither the sale of the project nor the transfer of common area to a third party constitutes an approved transfer of the stormwater permit. 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 remains in force and effect until modified, revoked, terminated or renewed. 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 permittee shall notify the Division of any name, ownership or mailing address changes at least 30 days prior to making such changes. Page 5 of 8 State Stormwater Management Systems Permit No. SW8 090117 11. The permittee shall submit a permit renewal request at least 180 days prior to the expiration date of this permit. The renewal request must include the appropriate documentation and the processing fee. Permit issued this the 13th day of March 2009. NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION Division of Water Quality By Authority of the Environmental Management Commission Page 6 of 8 State Stormwater Management Systems Permit No. SW8 090117 Bachelor Enlisted Quarters, MCAS P-632 Stormwater Permit No. SW8 090117 Onslow 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 specifications: Signature Registration Number Date SEAL Page 7 of 8 State Stormwater Management Systems Permit No. SW8 090117 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 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 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 and located 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. 16. All components of the stormwater BMP are located in either recorded common areas, or recorded easements. cc: NCDENR-DWQ Regional Office Onslow County Building Inspections Page 8 of 8 .:. DWQ USE ONLY Date Received Fee Paid Permit Number 3-t)-09 �ID�- ��5 SwSti9olt� 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 I. GENERAL INFORMATION r 4 2009 1. Applicants name (specify the name of the corporation, individual, etc. who owns the project): MARINE CORPS BASE, CAMP LEIEUNE 2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance): Carl Baker.Deputy Public Works Officer 3. Mailing Address for person listed in item 2 above: BLDG 1005 MICHAEL ROAD City:MCB CAMP LEIEUNE State:NC Zip:28547 Phone: (910 ) 451-2213 Fax: (910 ) 451-2927 Email:carl.h.baker@usmc.mil 4. Project Name (subdivision, facility, or establishment name - should be consistent with project name on plans, specifications, letters, operation and maintenance agreements, etc.): BACHELOR ENLISTED QUARTERS, MCAS P-632 5. Location of Project (street address): City:MCB CAMP LEIEUNE County:Onslow Zip:28547 6. Directions to project (from nearest major intersection): From Intersection of US HWY 17 and US HWY 24 travel southwest on HWY 17 for approximately 2.19 miles turn left onto Bonnyman Road, Bonnyman turns into Douglas travel on Douglas for .7 mile, site located on the 7. Latitude:34° 42' 52" N Longitude:77° 27' 47" W of project 8. Contact person who can answer questions about the project: Name:RodneyWright Telephone Number: (910 ) 791-4441 Email:rodney@coastalsitedesign.com II. PERMIT INFORMATION: 1. Specify whether project is (check one): ®New ❑Renewal ❑Modification Form SWU-101 Version 09.25.08 Page I of 4 1. Specify whether project is (check one): ®New [.1AiJ I❑Re"_rSewal ❑Modification 2. If this application is being submitted as the result of a renewal or modification to an existing permit, list the existing permit number 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): ❑LAMA 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. Stormwater will sheet Flow through parking lot and discharge into grassed swale that will convey the water to a stormwater pond designed for 90% TSS. 2. Stormwater runoff from this project drains to the White Oak River basin. 3. Total Property Area: 11.07 acres 4. Total Coastal Wetlands Area: 0.00 acres 5. Total Property Area (3) - Total Coastal Wetlands Area (4) = Total Project Area**:11.07 acres 6. (Total Impervious Area / Total Project Area) X 100 = Project Built Upon Area (BUA):41.0 7. How many drainage areas does the project have?2 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, complete the table with one drainage area for each engineered stormwater device. Basin Information Drainage Area 1 NO ('J Drainage Area 2 Receiving Stream Name UT to Southwest Creek UT to Southwest Creek Stream Class & Index No. C,NSW �� �_�� C,NSW Total Drainage Area (sf) 397,376 sf (9.12 ac) 46,500 sf (1.07 ac) On -site Drainage Area (sf) 397,376 sf (9.12 ac) 46,500 sf (1.07 ac) Off -site Drainage Area (sf) Existing Impervious* Area (sf) Proposed Impervious*Area (sf) 193,087 sf (4.43 ac) 4,950 sf (0.11 ac) % Impervious* Area (total) 48.6% 10.6% Impervious* Surface Area Drainage Area 1 Drainage Area 2 On -site Buildings (sf) 40,464 sf (0.93 ac) On -site Streets (sf) 3,398 sf (0.07 ac) On -site Parking (sf) 107,038 sf (2.46 ac) On -site Sidewalks. (sf) 31,621 sf (0.73 ac) 730 sf (0.017 ac) Other on -site (sf) 13,964 sf ( 0.32 ac) 822 sf (0.02 ac) Off -site (sf) Total (sf): 193,087 sf (4.43 ac) 4,950 sf (0.11 ac) * Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas, sidewalks, gra vel areas, etc. reKNyh&fir Form SWU-101 Version 09.25.08 Page 2 of 4 ,I 9. How was the off -site impervious area listed above derived? [JAR P 4 2nnQ 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 stonmwater 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 http://h2o.enr.state.nc.us/su/bmp 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 http://h2o.enr.state.nc.us/su/bmp 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 It - MAR (A 4Zoos 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 maos.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 ' Z • Original and one copy of the Deed Restrictions & Protective Covenants Form (if Ax 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 �r/1 • Calculations & detailed narrative description of stormwater treatment/management • Copy of any applicable soils report 1< • Two copies of plans and specifications (sealed, signed & dated), including: - 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) VII. 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):Coastal Site Design. PC Mailing Address:PO 4041 City:Wilmington State:NC Zip:28406 Phone: (910 1 791-4441 Fax: (910 1 791-1501 Email:howard@coastalsitedesign.com Vill. APPLICANT'S CERTIFICATION I, (print or type name of person listed in General Information, item 2) Carl Baker 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 coygrants will be recorded, and that the proposed project complies with the requirements of 15A NCAC 21-1.100V I Al Date: Form SWU-101 Version 09.25.08 Page 4 of 4 FOR: NCDENR P. 01 TRANSACTION REPORT MAR-16-2009 MON 11:50 AM 910 350 2004 SEND DATE START RECEIVER TX TIME PAGES TYPE NOTE M# DP MAR-16 11:48 AM 97911501 1'24" 9 FAX TX OK 226 K TOTAL 1M 24S PAGES: 9 State of North Carolina Department of Environment and Natural Resources Wilmington Regional Office Beverly Eaves Perdue, Governor Date: Zj 1L� Ln ni, To: nn Fax: cal'l _ J U 1 Hard Copy to follow FAX COVER SHEET Dee Freeman, Secretary No. Pages (excl. cover): Express Permitting From: Sandra Exum Phone (910) 796-7265 Fax: (910)350-2004 127 Cardinal Drive Extension, Wilmington, NC 29405 . (910) 796-7215 • An Equal Opportunity Affirmative Action Employer P. 01 K TRANSACTION REPORT MAR-16-2009 MON 11:47 AM >K � FOR: NCDENR 910 350 2004 K SEND DATE START RECEIVER TX TIME PAGES TYPE NOTE M# DP MAR-16 11:46 AM 919104512927 1'52" 9 FAX TX OK 225 >K � TOTAL : 1M 52S PAGES: 9 � >K State of North Carolina Department of Environment and Natural Resources Wilmington Regional Office Beverly Eaves Perdue, Governor Dee Freeman, Secretary FAX COVER SHEET Date:No. Pages (excl. cover): Express Permitting To: Call r-1 �s /� From: Sandra Exum Co: ffiG� Lti;i. Phone: 910 7( ) 96-7265 Fax: `Z Its - !tj� I— a.q';n_ Fax: (910) 350-2004 Re: Hard copy to follow 127 Cardinal Drive Extension, Wilmington, NC 28405 e (910) 796-7215 . An Equal Opportunity Affirmative Action Employer Fr,:.:.. ' E1 11' COASTAL SITE DESIGN, PC PO Box 4041 Wilmington, NC 28406 Phone: 910 791-4441 Fax: 910 791-1501 March 4, 2009 Christine Nelson Express Review Permitting N.C. Department of Environment And Natural Resources Division of Water Quality 127 Cardinal Drive Extension Wilmington, NC 28405 Re: Express Submittal MCAS P-632 Onslow County CSD Project No. 08-0198 Dear Christine: Enclosed please find the following items. - one (]).copy of the Stormwater Management Calculations - two (2) copies of sheets C-102-103, and C-503,C-505-506 "Sedimentation & Erosion Control and Storm Water Management Plan" - one (1) copy of the supplemental drawing EX1.1 — EX1.2 - Original stormwater application - Original O & M for wet basin - Check for $4,000 check # 265484 - Wet basin supplement We hope that this information is sufficient for compliance with NCDENR/DWQ's regulations regarding Coastal Stormwater. Please call if you have any questions. truly yours, i J Rodney right Encl.: As noted above cc: Caddell Construction Calibre Engineering h1AR (1 4 2009 L = STORMWATER MANAGEMENT CALCULATIONS For MCAS P-632 Caddell Construction Co. INC 2700 Lagoon Park Drive Montgomery, AL 36109 Prepared by: COASTAL SITE DESIGN, PC PO Box 4041 Wilmington, NC 28406 MAR P 4.2009 COASTAL SITE DESIGN, PC PO Box 4041 Wilmington, NC 28406 Phone: 910 791-4441 Fax: 910 791-1501 FOR STORMWATER EXPRESS REVIEW March 03, 2009 PROJECT NAME: Bachelor Enlisted Quarters, MCAS P-632 MCB Camp Lejeune, NC Onslow County PROJECT DESCRIPTION: This project is for the construction of barracks and a parking lot to be located on the Marine Corps Air Station Base at Camp Lejeune. The owner is the United States Marine Corps. There are no wetlands located within the area of the development. Stormwater from the site will drain into C;NSW waters located in the White Oak River Basin (Index # 1947-(0.5)). The project will be high density utilizing a wet detention basin as treatment for runoff, which will be conveyed to the pond using an underground stormwater collection system and above ground flumes / swales. This project is subject to NPDES Phase B requirements. Proposed impervious for the site is 40.8%. The building will utilize splash blocks to direct the runoff from the building into the onsite collection system that discharges into the pond. The site will have fire access roads that will be constructed from gravel. Entrance to the site will be off Douglas road and the first part of the entrance aprons will drain towards the roadside swales. 1. PROJECT BMP: high density wet detention basin STORMWATER ENGINEER/CONSULTANT:. Coastal Site Design, PC PO Box 4041 Wilmington, NC 28406 Howard Resnik, PE howard@coastalsitedesip.com 910 791 4441 office 910 791 1501 fax PROJECT DATA: Existing Site Data (areas within property boundary wetland area upland area Total site area Proposed Site Data: Proposed Building Proposed asphalt/curb and gutter sidewalks Fire access road Total proposed impervious area Soil Types: MAR 0 4 2009 0.00 sf (0.00 acres) 482,426 sf (11.07 acres) 482,426 sf (11.07 acres) 40,464 sf (0.93 acres) 107,038 sf (2.46 acres) 31,621 sf (0.73 acres) 13,964 sf (0.14 acres) 193,087 sf (4.43 acres) Abbreviation Type and Description Hydrologic Group Area Bab Bayrneade A 6.83 ac GpB Goldsboro B/C 1.97 ac MaC Marvyn B 1.66 ac On Onslow B 0.61 ac (See attached soils map and pages 132-134 of Table 15, "Physical and Chemical Properties of the Soils") MAR o 4 2009, MCAS P-632 POND CALCULATIONS: PRE -DEVELOPED CONDITIONS FOR POND (see hydrograph summary and reports): - Pre-dev. to Pond CN Pre Developed = 52 (SCS) composite value determined as follows: +/- 268,008 sf of soils are A, woods poor (CN = 45) +/- 129,368 sf of soils are B, woods poor (CN = 66) Area = 397,376 sf or 9.12 acres Hydraulic length = 625 ft Basin slope = 1.9% Qmax for pre-dev 1-yr/24-hr storm = 0.66 cfs POST -DEVELOPED CONDITIONS (see hydrograph summary and reports): - Post-dev. to pond CN Post Developed = 70 (SCS) composite value determined as follows: +/- 193,087 sf of impervious surface (CN = 98) +/- 158,167 sf of soils are A, open space -good cond. (CN = 39) +/- 41,922 sf of soils are B, open space -good cond. (CN = 61) +/- 4,200 sf of soils are C, open space -good cond. (CN = 74) (193,087 x 98 + 158,167 x 39 + 41,922 x 61 + 4,200 x 74) / 397,352 = 70.4 USED CN = 70 Area = 397,376 sf or 9.12 acres Hydraulic length = 864 ft Basin slope = 1.0% Qmax for post-dev 1-yr/24-hr storm = 3.84. cfs - Routed site —areas draining to pond routed through pond (see hydrograph summary & reports): Qmax for post -route 1-yr/24-hr storm = 0.19 cfs SUMMARY: Qmax for routed post-dev. 1-yr/24-hr storm = 0.19 efs < 0.66 cfs... O.K. P-632 WET DETENTION BASIN CALCULATIONS MAR, 4 2009 DETERMINE IMPERVIOUS PERCENTAGE area to basin = 397,376 sf 9A2 acres buildings = 40,464 sf 0.93 acres paved area = 107,038 sf 2.46 acres ' sidewalks= 31,621 sf 0.73 acres gravel access = 13,964 sf 0.32 acres total impervious surface = 193,087 sf 4,43 acres ' total non -impervious surface = 204,289 sf 4.69 acres percent imp. = 48.6 % DETERMINE REQUIRED SURFACE AREA from 90% TSS Removal Chan: Qo depth = 4 It imp % SAIDA 40 3,5 48.6 50 4.3 x= 4.19 minimum surface area = 0.0419 x 397,376 sf = 16,639 sf surface area provided = 20,519 sf @ elevation 15.0 1.5" VOLUME DETERMINATION: DETERMINE RUNOFF COEFFICIENT (Rv) I = 48.6 percent impervious Rv = ? (runoff coefficient, inches per inch) Rv= 0,05+0,009(1) Rv= 0.49 in/in DETERMINE VOLUME design storm = 1.5 inch Rv= 0.49 in/in drainage area = 9.12 acre: volume = ? ;volume= (design stonn)(Rv)(dainagearea) volume = 0.6 acre-ft volume = 24,206 cf of required storage volume COASTAL SITE DESIGN, PC PO BOX 4041 WILMINGTON, NC 28406 WET DETENTION BASIN STAGE-STORAGEITABLE INCREMENTAL MAR. (I A 2009 ELEVATION AREA VOLUME STORAGE (FT) (SF) (cf) (co 10 10,995 10,330 11 12.393 11,694 - 12 13.848 13,121 - 13 15.360 14,604 - 14 16.927 16,144 - Bottom Shelf 14.5 17,733 8,665 - PP 15 20,519 9,563 - Top Shelf 15.5 23.463 10,996 10.996 16 24,376 11,960 22.955 State Storage 16.1 24,561 2,447 25,402 17 26,246 22,863 48,265 18 28,172 27,209 75,474 average pond depth = 4.10 ft volume at permanent pool (elev. 15.0) = 84,120 cf 1.5"storage volume provided(elev. 16.1)= 25,402 cf total volume of basin = 159,594 cf surface area at bottom of 10:1 shelf ( 14.5) = 17,733 sf volume at bottom of 10:1 shelf= 74,557 cf surface area at lop of 10:1 shelf (15.5) = 23,463 at volume at top of 10:1 shelf= 95,115 cf minimum forebay volume= 16,824 cf FOREBAY #1 STAGE -STORAGE TABLE: INCREMENTAL ELEVATION AREA VOLUME STORAGE (FT) (SF) (cf) (cf) 11 499 12 820 660 660 - 13 1,196 - 1,008 1.668 14 1,629 1,413 3,080 15 2,761 2,195 5.275 forebay volume provided = 5,275 cf approximatley 31 % of required forebay volume FOREBAY #2 STAGE -STORAGE TABLE: INCREMENTAL ELEVATION AREA VOLUME STORAGE (FT) (SF) (cf) (cf) 15 4,637 - - 16 5,596 5,117 5,117 17 6.611 6.104 11.220 18 8.998 7,805 19.025 19 11,013 10,006 29.030 forebay volume provided = 29,030 cf Note: forebay 2 combined with forebay 1 exceeds the 20% requirement but forebay two is detached and wasn't included in any of the calculations for the pond, COASTAL SITE DESIGN, PC PO BOX 4041 WILMINGTON, NC 28406 STAGE - DISCHARGE TABLE: size of onfice (in) = 2.0 crest length of weir cut (ft) = 0.10 crest length of grates (51) = 20.0 crest length of spillway (ft) = 40.0 ELEVATION 2" PVC WEIR (ft) (cfs) (cfs) 15 0.00 16 0.11 - 17 0,15 0.28 18 0.18 0.86 PVC DRAW DOWN . Onfice size = 2.0 in Normal Pool Storage Elev. = 15.0 - 1.5" storage Elev. = 16.1 elevation of onfice = 15.0 elevation of weir cut= 16.1 elevation of grates = 16.5 elevation of spillway = 17.0 GRATES SPILLWAY TOTAL (cfs) (cfs) (cfs) 23.33 121.25 232 Orifice coefficient (C) = 0.6 Average head from 1.5" storage to onfice (h) = If 6.1 - 15.0) /2 = 0.55 ft Onfice cross sectional area (A) = pi x rA2 = 3.14 x (r/12)A2 = 0.02181 at Acceleration due to gravity (g) = 32.2 8/sA2 O=CA (2gh)Al/2 = 0.6 x 0.02181 x (2x32.2x0S5)41/2 = 0.07787 cfs 25.402 / 0.07787 = 326,232 seconds = 3.78 days 0.11 23.76 122.30 MAR (1 4 2009 �' �/s ►,FPS= `ZIMkk 4•b A&V I COASTAL SITE DESIGN, PC PO BOX 4041 WILMINGTON, NC 28406 NIAR, n L] 2009 Hydrograph Summary Report Hydraflow Hydrographs by Intelisolve v9.1 Hyd. No. Hydrograph type (origin) Peak flow (cfs) Time interval (min) Time to peak (min) Hyd. volume (cuft) Inflow hyd(s) Maximum elevation (ft) Total strge used (cuft) Hydrograph description 1 SCS Runoff 0.656 5 795 11,746 --- ----- --- Pre Dev 2 SCS Runoff 3.844 5 765 40,812 --- --- --- Post Dev 3 Reservoir 0.194 5 1455 40,477 2 16.46 33,956 Routed Coastal SHO Design, PC P.O. Box 4041 Wilmington, NC 28406 p632.gpw Return Period: 1 Year Friday, Feb 13, 2009 Hydrograph Report MM o 4 2009 Hydraflow Hydrographs by Intelisolve v9.1 Friday, Feb 13, 2009 Hyd. No. 1 Pre_Dev Hydrograph type = SCS Runoff Peak discharge = 0.656 cfs Storm frequency = 1 yrs Time to peak = 795 min Time interval = 5 min Hyd. volume = 11,746 cuft Drainage area = 9.120 ac Curve number = 52 Basin Slope = 1.9 % Hydraulic length = 625 ft Tc method = LAG Time of conc. (Tc) = 33.60 min Total precip. = 3.83 in Distribution = Type III Storm duration = 24 hrs Shape factor = 242 Q (cfs) 1.00 0.90 0.80 0.70 [IMIG 0.50 0.40 0.30 0.20 0.10 0.00 Pre_Dev Hyd. No. 1 -- 1 Year Q (cfs) 1.00 0.90 0.80 0.70 0.60 0.50 0.40 0.30 0.20 0.10 0.00 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 Hyd No. 1 Time (min) Coastal Site Design, PC P.O. Box 4041 Wilmington, NC 28408 e Hydrograph Report Hydraflow Hydrographs by Intelisolve v9.1 Hyd. No. 2 Post Dev Hydrograph type = SCS Runoff Storm frequency = 1 yrs Time interval = 5 min Drainage area = 9.120 ac Basin Slope = 1.0 % Tc method = LAG Total precip. = 3.83 in Storm duration = 24 hrs Q (cfs) 4.00 3.00 OM 1.00 0.00 -L 0 Post Dev Hyd. No. 2 -- 1 Year 120 240 360 480 600 ' 720 840 960 — Hyd No. 2 n A 2009 Friday, Feb 13, 2009 Peak discharge = 3.844 cfs Time to peak = 765 min Hyd. volume = 40,812 cuft Curve number = 70 Hydraulic length = 864 ft Time of conc. (Tc) = 37.80 min Distribution = Type III Shape factor = 242 Q (cfs) 4.00 3.00 2.00 1.00 0.00 1080 1200 1320 1440 1560 Time (min) Coastal Site Deals PC n P.O. Box 4041 wiminMon, NC 28408 Hydrograph Report HydraFlow Hydrographs by Intelisolve v9.1 Hyd. No. 3 Routed Hydrograph type = Reservoir Storm frequency = 1 yrs Time interval = 5 min Inflow hyd. No. = 2 - Post Dev Reservoir name = P632 Storage Indication method used. Q (cfs) 4.00 4111I111 2.00 1.00 0.00 1--&--1 0 1500 — Hyd No. 3 Routed Hyd. No. 3 -- 1 Year 3000 4500 6000 — Hyd No. 2 Peak discharge Time to peak Hyd. volume Max. Elevation Max. Storage Friday, Feb 13, 2009 = 0.194 cfs = 1455 min = 40,477 cult = 16.46 ft = 33,956 cult Q (cfs) 4.00 3.00 2.00 1.00 - I l I I 0.00 7500 9000 10500 12000 13500 15000 ir]] i1T1 iT] Total storage used = 33,956 tuft Time (min) Coastal Site Design, PC P.O. Box 4041 Wilmington, NO 28406 Pond Report Hydraflow Hydrographs by lntelisolve v9.1 I'r1AN 11 `3 [(Jl)y Pond No. 1 - P632 Pond Data Contours - User -defined contour areas. Conic method used for volume calculation. Begining Elevation = 15.00 ft Stage / Storage Table Stage (ft) Elevation (ft) 0.00 15.00 1.00 16.00 2.00 17.00 3.00 18.00 Contour area (sqft) 20,519 24,376 26,246 28,172 Incr. Storage (cuft) 0 22,418 25,303 27,201 Total storage (cult) 0 22,418 47,720 74,921 Friday, Feb 13, 2009 Culvert / Orifice Structures Weir Structures [A] [B] [C] [PrfRsr] [A] [B] [C] [D] Rise (in) = 18.00 2.00 0.00 0.00 Crest Len (ft) = 20.00 0.10 40.00 0.00 Span (in) = 18.00 2.00 0.00 0.00 Crest El. (ft) = 16.50 16.10 17.00 0.00 No. Barrels = 2 1 0 0 Weir Coeff. = 3.33 3.33 2.60 3.33 Invert El. (ft) = 14.00 15.00 0.00 0.00 Weir Type = Riser Rect Broad - Length (ft) = 30.00 1.00 0.00 0.00 Multi -Stage = Yes No No No Slope (%) = 0.20 0.00 0.00 n/a N-Value = .013 .013 .013 n/a Orifice Coeff. = 0.60 0.60 0.60 0.60 Exfil.(in/hr) = 0.000 (by Contour) Multi -Stage = n/a No No No TW Elev. (ft) = 0.00 Note: CON.WOnf ce outlo,,s are analyzed under inlet (ic) and outlet (oc) control. Weir risers checked for onfice conditions (ic) and submergence (a). Stage / Storage / Discharge Table Stage Storage Elevation Clv A Clv B Clv C PrfRsr Wr A Wr B Wr C Wr D Exfil User Total It tuft ft cfs cfs cfs cfs cfs cfs cfs cfs cfs cfs cfs 0.00 0 15.00 0.00 0.00 -- -- 0.00 0.00 0.00 - 0.00 1.00 22,418 16.00 3.55 oc 0.10 is -- - 0.00 0.00 0.00 -- -- -- 0.10 2.00 47,720 17.00 21.88 oc 0.15 is -- -- 21.88 s 0.28 0.00 -- -- --- 22.31 3.00 74,921 18.00 30.55 is 0.18 is -- -- 30.53 s 0.87 104.00 -- --- --- 135.59 YCnast"l Sate Design, PC ' AP.O. &N 4C4I COMPOSITE 'C' FACTORS LOCATION: 632 New River DATE: 2/11/2009 BASIN DESIGNATION AREAS (ACRES) SOIL TYPE UNDEV PAVED LAWNS COMP. C FACTOR UNDEV PAVED LAWNS TOTAL % 1 10 YR %I 10 YR %1 10 YR %1 10 YR Notes DEVELOPED' A 0.00 0.17 0.64 031 AJB 2.0 0.30 100.0 0.95 0.0 0.15 21.0 0.32 B 0A0 0.02 0.26 0.28 A+B 2.0 0.30 100.0 0.95 0.0 0.15 7.1 0.21 C 0.00 0.13 0.26 0.39 Ai8 2.0 0.30 100.0 0.95 0.0 0.15 33.3 0.42 D 0.00 021 0.06 0.27 A/13 2.0 0.30 100.0 1 0.95 0.0 0.15 77.8 0.77 E 0.00 0.09 OA4 0.13 AiB 2.0 0.30 100.0 0.95 0.0 0.15 69.2 0.70 F 0.00 0.11 0.12 0.23 .WB 2.0 0.30 100.0 0.95 0.0 0.15 47.8 0.53 G 0.00 0.16 0.09 0.25 NB 2.0 0.30 100.0 0.95 0.0 0.15 64.0 0.66 H 0.00 0.11 0.10 0.21 A+B 2.0 0.30 100.0 0.95 0.0 0.15 52.4 0.57 1 0.00 0.10 0.10 0.20 AiB 2.0 0.30 100.0 0.95 0.0 0.15 50.0 0.55 1 0.00 0.13 0.26 0.39 A/B 2.0 0.30 100.0 0.95 0.0 0.15 33.3 0.42 K 0.00 1.32 0.83 2.15 AiB 2.0 0.30 100.0 0.95 0.0 0.1.5 61.4 0.64 L 0.00 1.70 2.15 3.85 A/B 2.0 0.30 100.0 0.95 0.0 0.15 44.2 0.50 M 0.00 0-00 0.13 0.13 AB 2.0 0.30 100.0 0.95 0.0 0.15 0.0 0.15 N 0.00 0.02 0.16 0.18 AIB 2.0 0.30 100.0 0.95 0.0 0.15 11.1 0.24 O 0.00 0.02 0.34 0.36 AM 2.0 0.30 100.0 0.95 0.0 0.15 5.6 0.19 P 0.00 0.03 0.11 0.14 AIB 2.0 .0.30 100.0 0.95 0.0 0.15 t 21.4 0.32 Cal3xe nlc a201 sa n,park Lane; Suite 2� unlefon, co 8m�1 _ _130?) TdQoa3a Nww.cal bie�rl eertrg.co n, _ .. �1 P\CASS NEWRNEROD INAGEK32 RatioM A, 2/1V2oo9 2:15 PM gliCalibTe Cale. by: RJC Chk'd by: RWL 632 New River Phase 1 Date: 217112009 DIRECT RUNOFF TOTAL RUNOFF W n PIPE TRAVEL TIME REMARKS F 2 _ C „ N W N u W f 3 N Y < W E .-. n K W LL VI W _ N F Q O 4 O = U e N O 2 LL f01 4 F 1 O 3 I 3 W LL J N F l'J LL W w H ug w < e u E E e E 7i I. u o W m O W O V H N O N N VI F O LL N 6 6 J F DEVELOPED 1 A 0.81 0.32 5 0.26 10.45 2.7 2.7 D 0.030 150 1.0 2.5 A 2 B 0.28 0.21 5 0.06 10.45 0.6 109 7.5 9.25 0.32 2.9 2.9 P 0.013 2.9 1 00% 124 15 130 5.1 0.4 A + B 3 C 0.39 0.42 5 0.16 10.45 1.7 148 7.9 9.08 0.48 4.3 4.3 P 0.013 4.3 100% 144 15 210 5.6 0.6 A+B+C 4 D 0.27 0.77 5 0.21 1045 2.2 2.2 P 0.013 2.2 0,50% 12.E 15 75 3.7 0.3 D 5 E 0.13 0.70 5 0.09 10.45 1.0 040 5.3 10.26 T30 3.1 3.1 P 0.013 3.1 0.72% 13.4 15 92 4.6 0.3 D+E . 6 F 0.23 0.53 5 0.12 10,45 1.3 0.63 5.7 10.09 0.42 4.3 4.3 P 0.013 4.3 0,88% 14.6 15 53 5.3 0.2 D+E+F 7 G 0.25 0.66 5 0.17 10.45 1.7 17 P 0.013 1.7 1.56% 9A 16 80 5.1 0.3 G 8 H 0.21 0.57 5 -0.12 10.45 1.2 1.09 5A 10.01 0.71 7.1 7.1 P 0.013 7.1 1.09% 17.0 18 55 6.6 0.1 D-H 9 1 0.20 0.55 5 0.11 10.45 1.1 1.29 60 9.94 182 8.1 8,1 P 0.013 8.1 2.72% 1&1 15 160 9.5 0.3 D-1 10 J 0.39 0.42 5 0.16 10,45 1.7 17 P 0.013 1.7 L37% 9.5 15 185 4.9 0.6 J 11 K 2.15 0.64 5 1.38 10,45 14A 2.54 5.6 10.12 1.54 15.6 15.6 P 0.013 15.6 2.00% 20.4 18 75 9.5 0.1 J+K 12 L 3.65 0.50 5 1.94 10.45 20.2 9.16 6.3 9.81 4.77 46.8 46.8 Total to Ports 13 M 0.13 0.15 5 0.02 10.45 0.2 0.2 P 0.013 0.2 0.07% 75 15 55 0.9 1.0 M 14 N 0,18 0.24 5 0.04 10.45 0.4 0,31 6.0 9.93 006 0.6 0.6 P 0.013 0.6 0.65% 715 15 39 2.8 0.2 M + N 15 O 0.36 0.19 5 0.07 10.45 0.7 0.57 62 9.82 0.13 1.3 1.3 P 0.013 T3 0.50% 10.4 15 29 3.2 0.2 M+N+O 16 P 0.14 0.32 5 0.05 10.45 0.5 0.81 6.4 9J5 0.18 17 1.7 P 0.013 1.7 1,30% 9.68 15 52 1 4.9 1 0.2 M-P vllrz P:1CA55 NEVJRNERVRAINSGFb33 Rallonal.xLs i17 PM Scenario: 632 10-YEAR 0�5 E) DP-2 OP-1 10 ;DP-3 M-4 DP Dv .. ........ P., 0-7 8 Title NEW RIVER 632 Project Engineer: Greg Murphy p:%...\drainage\sIorm cadd\632-ston-ncad.stm Calibre Engineering StormCAD v4.1 . 1 f4.2014a] 02112/09 08:14.06 AM OlHaestad Methods, Inc. 37 Brookside Road Waterbury, CT06708 USA 1-203-755-1666 Page 1 of 1 Scenario: 632 10-YEAR Report Summary Label Upstream Node Downstream Node Length (fit) Section Size Mannings n Slope N Known Flow (cfs) Velocity In (fl/s) Velocity Out (flits) Depth In (it) Depth Out (ft) Hydraulic Grade Line In (fl) Hydraulic Grade Line Out (fl) Hydraulic Slope M Rim Elevation (ft) Upstream Cover (ft) Downstream Cover (fl) DP-2 2.90 4.19 4.19 0.69 0.69 16.76 16.76 19.20 P-2 DP-2 DP-3 102.00 15 inch 0.012 0.50 4.19 3.49 0.69 0.80 16.76 16.36 0.39 1.88 3.61 DP-3 4.30 4.54 4.54 0.90 0.90 16.36 16.36 20.42 P-3 DP-3 0-2 192.00 15 inch 0.012 0.50 4.54 4.90 0.90 0.84 16.36 15.34 0.53 3.71 0.75 0-2 4.90 0.00 0.84 0.84 15.34 15.34 16.50 DPA 2.20 3.84 3.84 0.59 0.59 18.65 18.65 21.30 P-6 DPA DP-5 73.00 15 inch 0.012 0.51 3.84 2.97 0.59 0.73 18.65 18.42 0.32 1.99 3.38 DP-5 3.10 3.60 3.60 0.83 0.83 18.42 18.42 22.32 P-8 DP-5 DP-6 92.00 15 inch 0.012 0.51 3.60 2.57 0.83 1.20 18.42 18.32 0.11 3.48 3.03 DP-7 1.70 3.54 3.54 0.52 0.52 19.02 19.02 21.23 P-10 DP-7 DP-8 76.00 15 inch 0.012 2.29 3.54 1.39 0.52 1.36 19.02 18.12 1.19 1.48 3.22 DP-6 4.30 3.50 3.50 1.30 1.30 18.32 18.32 21.40 P-9 DP-6 DP-8 53.00 15 inch 0.012 0.49 3.50 3.50 1.30 1.36 18.32 18.12 0.38 3.13 3.22 DP-8 7.10 5.79 5.79 1.46 1.46 18.12 18.12 21.23 P-11 DPA DP-9 54.00 15 inch 0.012 0.50 5.79 6.07 1.46 1.13 18.12 17.52 1.09 3.32 3.35 DP-9 8.10 6.07 5.21 1.23 1.23 17.52 17.52 20.99 P-12 DP-9 0-3 157.00 18 inch .0.012 0.50 5.21 5.82 1.23 1.10 17.52 16.60 0.59 3.20 0.50 0-3 5.82 0.00 1.10 1.10 16.60 16.60 17.50 DP-10 1.70 3.54 3.54 0.52 0.52 19.04 19.04 21.41 P-13 DP-10 CA 174.00 15 inch 0.012 0.51 3.54 3.67 0.52 0.50 19.04 18.14 0.51 1.64 0.75 OA 3.67 0.00 0.50 0.50 18.14 18.14 19.64 DP-15 1.30 3.27 3.27 0.45 0.45 17.97 17.97 19.70 P-14 DP-15 0-7 20.00 15 inch 0.012 0.50 3.27 3.40 0.45 0.44 17.97 17.86 0.56 0.93 0.89 0-7 3.40 0.00 0.44 0.44 17.86 17.86 19.56 DP-16 1.70 3.54 3.54 0.52 0.52 17.47 17.47 19.00 P-15 DP-16 0-8 48.00 15 inch 0.012 1.10 3.54 4.87 0.52 0.41 17.47 16.83 1.33 0.80 0.82 0-8 4.87 0.00 0.41 0.41 16.83 16.83 18.49 DP-1 2.70 4.11 4.11 0.66 0.66 20.62 20.62 22.15 P-16 DP-1 0-1 30.00 15 inch 0.012 0.50 4.11 4.12 0.66 0.66 20.62 20.47 0.50 0.94 0.73 0-1 4.12 0.00 0.66 0.66 20.47 20.47 21.79 1 DP-14 0.60 2.62 2.62 0.30 0.30 18.28 - 18.28 20.00 P-17 DP-14 OE 38.90 15 inch 0.012 0.54 2.62 2.80 0.30 0.29 18.28 18.06 0.58 0.77 0.73 0-6 2.80 0.00 0.29 0.29 18.06 18.06 19.75 DP-13 0.20 1.94 1.94 0.17 0.17 19.02 19.02 22.00 P-18 DP-13 0-5 54.77 15 inch 0.012 0.47 1.94 1.95 0.17 0.17 19.02 18.76 0.48 1.90 1.16 0-5 1.95 0.00 0.17 0.17 18.76 18.76 21.00 DP-11 15.601 8.831 8.831 2.61 2.611 19.84 19.841 20.00 Title: NEW RIVER 632 Project Engineer: Greg Murphy PA ... \drainage\storm cadd\632-stonncad.stm Calibre Engineering StormCAD v4.1.1 [42014a] 02/11/09 02:14:36 PM ®Haestad Methods, Inc. 37 13rookside Road Waterbury, CT 06706 USA +1-203-755-1666 Page 1 of 2 Scenario: 632 10-YEAR Report Summary Label Upstream Downstream Length Section Mannings Slope Known Velocity Velocity Depth Depth Hydraulic Hydraulic Hydraulic Rim Upstream ovmstrea Node Node (ft) Size n M Flow In Out In Out Grade Grade Slope Elevation Cover Cover (cfs) (ft/s) (fl/s) (ft) (fl) Line In Line Out M (fl) 01) (fl) (ft) (fl) P-19 DP-11 0-9 1 153.00 18 inch 1 0.012 1.13 1 8.83 9.02 2.61 1.42 19.84 16.92 1.91 1.27 1.00 0-9 1 9.02 0.00 1.42 1.42 16.92 16.92 18.00 Title: NEW RIVER 632 Project Engineer: Greg Murphy p:\...\drainage\storm cadd%632-stormcad.stm Calibre Engineering - StormCAD v4.1.1 [4.2014a) 02/11/09 02:14:36 PM ©Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 USA +1-203-755-1666 Page 2 of 2 CAROROLI PIGS • Construction Materials Mr. Michael R Wasner Caddell Construction Co., Inc. 2700 Lagoon Park Drive Montgomery, Alabama 36109 Re: Seasonal High Water Level Estimation MCAS-P-632, P-634 Jacksonville, Onslow County, North Carolina Dear I& Wasner, • P'acilifies January 26, 2009 ECS Project No. 22.14699 ECS Carolinas, LLP (ECS) recently conducted an estimation of the Seasonal High Water Level (SHWL) for the proposed pond areas at the proposed MCAS P-632, P-634 in Jacksonville, Ons low County, North Carolina. This letter, with attachments, is the report of our estimation. Field Testing I On January 23, 2009, ECS conducted an exploration of the subsurface soil and groundwater conditions at eight requested locations shown on the ,attached Test Location Plans (Figures 1, 2). The borings were field located using a boring location plan provided by Coastal Site Design,_P.C. The purpose of this exploration was to obtain subsurface information:of the in place soils for the proposed pond areas. ECS explored the subsurface soil and groundwater conditions by advancing one hand auger boring into the existing ground surface at the requested boring locations. ECS -visually classified the subsurface soils and' obtained representative samples of each soil.type encountered. ECS also recorded the groundwater level. observed at the time of each hand auger boring. The attached SHWL sheet provides a summary of the subsurface conditions encountered at each hand auger'boring location. The ground water level and the seasonal high water level (SHWL) were estimated at each boring location below the existing grade elevation. Below is a summary of each boring location. PC ........ V. , , v avplp . 7211 Ogden Business Park- Suite 201• Wilmington, NC 28411 • (910) 686-9114• Fax (910) 686-9666. www.ecslimited.com Asheville, NC • Chuleston, SC • Charlotte, NC - Conover; NC *- Greensboro, NC • Greenville, SC • Fayetteville, NC Little River, SC Raleigh, NC • Swarisboro; NC* Wilmington NC - r, * testing services only SHWL Estimation MCAS-P-632, P-634 Jacksonville, Onslow County„ North Carolina ECS Project No. 22.14699 January 26, 2009 MAR n 4 2009 The SHWL may varywithin the proposed site due to changes in subsurface conditions and elevation. If you have any questions regarding this report, please contact us at (910) 686-9114. Respectfully, ECS CAROLINAS, LLP K. Brooks Wall Project Manager Attachments: Site Diagmm/SHWL sheet CC: Rodney Wright -Coastal Site Design, P.C. �K //4--- Kris J. Stamm Construction Services Manager Coastal Site Design, PC ®, P.O. Box 4041 Wilmington, NC 28406 MAR 0 4 2005 MCAS P-634 Jacksonville, Onslow County, NC ECS Project No. 22-14699 January 23.2009 KBW P-M 5 �WV , t _ I . I i• NN :r —7 id ;• _'•_ •---� =fie-{{ r .4 _ Ilia. � t 3 G r ®2 {rt t 1 p BORING LOCATIONS Figure 1-Boring Location Plan Provided by; Coastal Site Design ®s—��►� ��, Coastal Site Design, BORING I.W471Dt43 I MCAS P-632 Jacksonville, Onslow County, NC ECS Project No. 22-14699 January 23. 2009 KBW NiAl'i (k 4 2009 to fi Z!7' 7 BORING LOCATIONS Figure 2-Boring Location Plan Provided by: Coastal Site Design Coastal site Season High Water Level Estimation MCAS-P-632, P-634 Jacksonville, Onslow County, North Carolina ECS Project No. 22.14699 January 23, 2009 Location Depth Soil Description 1 0-12" Black silty SAND 12"-18" Tan/grey clayey SAND, 18"-60" Grey/tan/orange sandy CLAY MAR, C 4 2009 Seasonal High Water Table was estimated to be at 18 inches below the existing grade elevation. Groundwater was encountered at 60 inches below the existing grade elevation. Location Death Soil Description 2 0-6" Black silty SAND 6"-18" Tan clayey SAND 18"-60" Grey/tan/orange sandy CLAY Seasonal High Water Table was estimated to be at 18 inches below the existing grade elevation. Groundwater was encountered at 60 inches below the existing grade elevation. Location Depth Soil Description 3 0-10" Black silty SAND 10"-24" Tan clayey SAND 24"-60" Grey/tan/orange sandy CLAY Seasonal High Water Table was estimated to be at 16 inches below the existing grade elevation. Groundwater was encountered at 60 inches below the existing grade elevation. Location Depth Soil Description 4 0-18" Dark grey SILT w/sand 18"-24" Grey clayey SAND Seasonal High Water Table was estimated to be at 10 inches below the existing grade elevation. Groundwater was encountered at 20 inches below the existing grade elevation. Coastal Site Design, PC c P.O. BOX 4041 ffiImingfon, NC 26406 Season High Water Level Estimation MAR n 4 2009 MCAS-P-632, P-634 Jacksonville, Onslow County, North Carolina ECS Project No. 22.14699 January 23, 2009 Location Dew Soil Description 5 0-18" Grey silty SAND 18"-42" Tan fine SAND w/clay 42"-60" Grey/tan/orange sandy CLAY Seasonal High Water Table was estimated to be at 18 inches below the existing grade elevation. Groundwater was encountered at 60 inches below the existing grade elevation. Location D_eDth 6 0-6" 6"-12" 12"-30" 30"-50" Soil Description Black silty SAND Grey fine SAND Black silty SAND (hardpan) Tan fine SAND w/silt Seasonal High Water Table was estimated to be at 12 inches below the existing grade elevation. Groundwater was encountered at 48 inches below the existing grade elevation. Location D�th Soil Description 7 0-12" Black/orange/grey clayey SAND (fill) 12"-20" Black silty SAND (hardpan) 20"-30" Brown silty SAND Seasonal High Water Table was estimated to be at 12 inches below the existing grade elevation. Groundwater was encountered at 30 inches below the existing grade elevation. Coastal Site Design, PC P.O Box 4041 `� Wilmington, NC 28406 Season High Water Level Estimation MAR n tl 2009 MCAS-P-632, P-634 Jacksonville, Onslow County, North Carolina ECS Project No. 22.14699 January 23, 2009 Location Depth Soil Description 8 0-12" Black/orange/grey clayey SAND (fill) 12"-36" Brown fine SAND (fill) Seasonal High Water Table was estimated to be at 12 inches below the existing grade elevation. Groundwater was encountered at 28 inches below the existing grade elevation. Coastal Site Design, PC o. P.O. BOX4041 Wilmington, NC 28406 NtHR n 4 2009' Appendices Table 8.03g Runoff curve numbers for other agriculture lands' Curve numbers for ------------------------Cover description -------------------------- ------------hydrologic soil groups -------- — Hydrologic Cover type conditions' A B C D Pasture, grassland, or range— Poor 68 79 86 89 continuous forage for grazing. a Fair 49 69 79 84 Good 39 61 74 80 Meadow —continuous grass, protected — 30 58 71 78 from grazing and generally mowed for hay. Brush —brush -weed -grass mixture with Poor 48' 67 77 83 brush the major element. 3 Fair 35 56 70 77 Good 304 48 65 73 Woods —grass combination (orchard or Poor 57 73 82 86 tree farm). 5 Fair 43 65 76 82 Good 32 58 72 79 Woods. a Poor 45 66 77 83 Fair 36 60 73 79 Good 304 55 70 77 Farmsteads —buildings, lanes, — 59 74 82 86 driveways, and surrounding lots. 1 Average runoff condition, and 1.= 0.2S. . ' 2 Poor. <50% ground cover or heavily grazed with no mulch. Fair., 50 to 75% ground cover and not heavily grazed. . Good. > 75% ground cover and lightly or only occasionally grazed. 3 Poor:<50% ground cover. Fair. 50 to 75% ground cover. Good: >75% ground cover. 4 Actual curve number is less than 30; use CN = 30 for runoff computations. _ 5 CN's shown were computed for areas with 50% woods and 50% grass (pasture) cover. Other combinations of conditions may be computed from the CN's for woods and pasture. 6 Poor: Forest litter, small trees, and brush are destroyed by heavy grazing or regular burning. Fair. Woods are.grazed but not burned, and some forest litter covers the soil. Good: Woods are protected from grazing, and litter and brush adequately cover the soil. kCoastal Site Design, PC P.O. Boa 4041 -Wilminglon, NC 26406 Rev. 6/06 8.03.17 .. 6 t A,R ti 4 -00q Appendices Table 8.03e Runoff curve numbers of urban areas' Curve number for ---------------------------------------Cover Description ------------------------- --------=hydrologic soil group-------- Covertype and hydrologic condition Average percent A g C D impervious areal Fully developed urban areas (vegetation established) Open space (lawns, parks, golf courses, cemeteries, etc.) 3: Poor condition (grass cover < 50%) ............................. 68 79 86 89 Fair condition (grass cover 50% to 75%) ..................... 49 69 79 84 Good condition (grass cover > 75%) ............................ 39 61 74 80 Impervious areas: Paved parking lots, roofs, driveways, etc. (excluding right-of-way) ........................................... g8 98 98 98 Streets and roads: Paved; curbs and storm sewers (excluding right-of-way).................................................................. g8 98 98 98 Paved; open ditches (including right-of-way) ................ 83 89 92 93 Gravel (including right-of-way) ...................................... 76 85 89 91 Dirt (including right-of-way) ........................................... 72 82 87 89 Urban districts: Commercial and business ................................................. 85 .89 92 94 95 Industrial.......................................................................... 72 81 88 91 93 Residential districts by average lot size: 1/8 acre or less (town houses) ......................................... 65 77 85 90 92 1/4 acre............................................................................ 38 61 75 .83 87 1/3 acre............................................................................. 30 57 72 81 86 112 acre............................................................................. 25 54 70 80 85 1 acre............................................................................... 20 51 68 79 84 2 acres.............................................................................. 12 46 65 77 82 Developing urban areas Newly graded areas (pervious areas only, no vegetation) ° .............................. 77 86 91 94 Idle lands (CN's are determined using cover types similar to those in table 2-2c). 1. Average runoff condition, and la = 0.2S. 2. The average percent impervious area shown was used to develop the composite CN's. Other assumptions are as follows: impervious areas are directly connected to the drainage system, impervious areas have a CN of 98, and pervious areas are considered equivalent to open space in good hydrologic condition. CN's for other combinations of conditions may be computed using Figure 8.03c or 8.03d. 3. CN's shown are equivalent to those of pasture. Composite CN's may be computed for other combinations of open space cover type. 4. Composite CN's to use for the design of temporary measures during grading and construction should be computed using Figure 8.03c or 8.03d based on the degree of development (impervious area percentage) and the CN's for the y gr� V.,g3.9.Wtg �� r PC P.O. Box 4041 Rev. 6/06 V� Wilmington, NG 284068.03.15 APR-09-1996 16:15 FROM EHNR WILM REG OFFICE TO .. 0 97624201 t P.02 85% TSS REMOVAL 30 FOOT VEGETATED FILTER REQUIRED NIAR 0 4 2009 DEPTH 3' 3.5' 4,0' 4,5' 5.0' 5.5' 6.0' 6.5' 7.0' 7.5' TMP % 10 % .9 .8 .7 .6 .5 0 0 0 0 20 % 1.7 1.3 1.2 1.1 1.0 .9 H.8 .7 .6 .5 30 % 2.5 2.2 1.9 1.8 1.6 1.5 1.3 1.2 1.0 .9 40 % 3.4 3.0 2.6 2.4 2.1 1.9 1.6 1.4 1.1 1.0 50 % 4.2 3.7 13.3 3.0 2.7 2.4 2.1 1.8 1.5 1.3 60 % 5.0 4.5 3.8 3.5 3.2 2.9 2.6 2.3 2.0 1.6 70 % 6.0 5.2 4.5 4.1 3.7 3.1 2.9 2.5 2.1 1.9 80 % 6.8 6.0 5.2 4.7 4.2 3.7 3.2 2.7 2.2 2.0 90 % 7.5 6.5 5.8 15.3 4.8 4.3 3.8 3.3 2.8 1.3 100% 8.2 7.4 6.8 6.2 5.6 5.0 4,4 3.8 13.2 2.6 90% TSS REMOVAL NO VEGETATED FILTER REQUIRED DEPTH 3' 3.5' 4.0' 4.5' 5.0 5.5' 6.0' 6.5' 7,0' 7.5' IMP % 10 % 1.3 1.0 .8 .7 .6 .5 .4 .3 2 1 20 % 2.4 2.0 1.8 1.7 1.5 1.4 1.2 1.0 .9 .6 30 % 3.5 3.0 2.7 2.5 2.2 1.9 1.6 1.3 1.1 .8 40 % 4.5 4.0 3.5 3.1 2.8 2.5 2.1 1.8 1.4 1.1 50 % 5.6 5.0 15.3 4.3 3.9 3.5 3.1 2,7 2.3 1.9 1.5 60 % 7.0 6.0 4.8 4.3. 3.9 3.4 2.9 2.4 11'.9 70 % 8.1 7.0 6.0 5.5 5.0 4.5 3.9 3.4 2,9 2.3_ 80 % 9.4 8.0 7.0 6.4 5.7 5.2 4.6 4.0 3.4 2.8'- 90 % 100% 10.7 12.0 L9. 0 7.9 8.8 7.2 8.1 6.5 7.3 5.9 6.6 15.8 5.2 4.6 3.9 Ic . rm w i u c 6 1tAR 0 4 2009 @ POINT PRECIPITATION FREQUENCY ESTIMATES FROM NOAA ATLAS 14 10 WILMINGTON WSO AIRPORT, NORTH CAROLINA (31-9457) 34.2683 N 77.9061 W 26 feet from "Precipitation -Frequency Atlas of the United 'Stays• NOAA Atlas 14, Volume 2, Version 3 G.M. Bonefo, D. Mutiv, B. Lin, T. Par ybok M.Ydaa, and D. May ' NOAA, National Weather Service, Silva Spring, Mag4znd. 2004 Extmcmd: Toe Feb 5 2008 real * Upper bound of the 90% confidence interval *a) r>uD 10 , n� � Precipitation � 1� nF Frequency nr n� Estimates nor hr (inches) aey aey a y a y a y a y a y �1 0.56 0.90 1.12 1.53 1.91 2.2E 2.46 3.04 3.58 4.27 5.02 5.68 6.46 7.27 9.65 11.74 14.60 77.50 0.66 1.06 1.33 1.64.31 2 2.79 2.98 3.69 .33 5.19 6.08 6.85 7.79 8.71" 11.51 13.96 17.26 20.61 0.78 1.24 1.57 224 2.87 3.56 3.81 4.73 5.59 6.71 7.80 8.68 9.79 10.80 14.02 16.74 20.45 24.10 ]o. 0.87 1.39 1.75 2.54 3.31 4.21 4.54 5.64 6.69 8.03 9.29 10.25 11.46 12.53 16.07 88.99 23.03 26.85 25 0.98 1.56 I.EJ 2.92 3.89 5.14 5.61 6.99 8.37 ]0.07 I1.58 12.60 13.91 15.07 19.05 22.16 26.61 30.61 50 1.06 1.69 2.14 3.23 4.37 5.95 6.58 8.20 9.87 I L90 13.61 14.64 15.99 17.22 21.55 24.73 29.49 33.58 100 1:15 1.83 2.31 3.53 4.87 6.84 7.64 9.55 11:58 13.98 15.91 16.93 18.28 19.54 24.21 27.39 32.47 36.58 20o 1.24 1.96 2A7 3.85 5.40 7.80 8-8 11 11.09 E52 16.38 18.56 19.49 20.SD 22.09 27. 11 30.19 35.58 39.58 500. 1.35 2.14 2.69 4.28 6.14 9:28 10.64 33.46 16.57 20.18 22.64 23.42 24.61 25.94 31.26 34.19 39.86 43.67 1000 1.44 2.27 2.85 4.62 6.75 10.57 12.26 15.58 19.24 23.57 26.25 26.90 27.83 29.18 34.76 37.38 43.38 46.91 The upper bound of the rnnfdence interval at 90%con0denra level is Me value which 5%01 the simulated uanflle values far a inn he am q 0 quencp area er n. '" There Precipitation frequenq estimataz are hazed r. a NOTE: F duration serene t, e fi thees near ro to ape Interval. Please refer t0 the tlocumenfad0n for more information. NDiE: FOrmettin0 Prevents estimates near xero b appear as zero. * Lower bound of the 90% confidence interval Precipitation Fre uency Estimates (inches) rs) ndmuhhdyr 12 nun Inn r hhd y day ed 0.49 0.78 0.97 D4FEEE12.08 2.59 3:0D 3.50 4.Ib 4.73 5.49 6.22 8.37 10.37 13.00 15.63 0.58 0.93 1.16 1.61 2.02 2.36 2:53 3.14 EjjKjj 5.03 5.70 6:62 7.43 9.98 12.32 15.38 18.42 0 0.68 1.08 1.37 1.95 2.50 3.02 3.23 4.02 4.70 5.48 6.44 7.19 8.30 9.19 12.14 14.78 18.21 21.53 10 0.75 1.20 1.52 2.21 2.87 3.56 3.83 .78 5.62 6.56 7.64 8.45 9.69 10.65 13.91 16.73 20.47 23.95 25 0.85 1.35 1.71 2.53 3.37 4.33 4.73 5.91 6.98 8.15 9.43 7 10.28 11.69 12.74 16.38 19.43 23.57 27.20 50 0.92 1.46 ].85 2.78 3.77 4:99 5.51 6. 00 8.21 9.56 10. 77 11.83 33.32 14.45 18.35 21.54 25.94 29. 77 100 0.98 1.57 1.98 3.03 4.17 5.71 6.36 8.00 9.57 11.10 12:63 13.52 15.06 16.23 20.41 23:65 28.33 32. 200 1.05 1.67 2.10 3.27 4.59 6.47 7.29 9.17 11:06 12.80 14.48 15.32 16.89 18.11 22.55 25.78 30.73 34. '. Coastal Site Design, PC u PO. Box 4041 Wilminoon, NO 2806 about:blank February 25, 2009 HEQ P 632, P 636 & MCAS Jogging Trail Gentlemen: The Express Submittal Meeting for Stonnwater & Erosion Control has been scheduled with Rhonda hall and Christine Nelson on Tuesday, Starch 3, 2009 at 10:15 AM here in the Wilmington Regional Office. Please read the submittal requirements, attached. Note that plans should be submitted folded to tit our files, 9" x 14". Please don't bind the plan set if binding the set makes them too thick to fold. Please respond within 2 business days to confirm and reserve the meeting dale. Thanks, Janet Russell Express Coordinator 1 of 1 2/25/2009 11:17 AM Seeping Meeting P632,636, walking trail. Subject: Scoping Meeting P632,636, walking trail. From: "RODNI-Y WRIGHT" <rodneyacoaslalsiledesign.ewm> Date: Fri, 23 Jan 2009 14:31:23 -0500 'ro: "'Jane( Russell"' Glane1.Russcll a ncmail.net> CC: 'Ryan W Littleton" <R WLittleton a calibre-engineering.com>, "Howard Resnik" <howard cot coastalsitedesign.com> Janet, Please accept this email for confirmation for the Scoping meeting on Tuesday the 27. Rodney Wright Engineering Tech Coastal Site Design, PC rodneyC@coastalsitedesign.com Ph. 910-791-4441 Fax 910-791-1501 ***ANY DIGITAL INFORMATION IS PROVIDED FOR YOUR CONVENIENCE. NO CLAIM FOR ACCURACY IS MADE BY COASTAL SITE DESIGN, PC EXCEPT FOR SIGNED AND STAMPED DOCUMENTS. USER SHALL ASSUME ALL LIABILITY FOR USE AND/OR ALTERATION OF THIS DIGITAL PRODUCT.*** I of 1 1/23/20093:01 PM aboutblank January 21, 2009 BEQ P-632, BEQ P-636 & MCAS Jogging Trail Gentlemen: The Express Stomwater Scoping meeting for the 3 projects listed above has been scheduled with Christine Nelson on Tuesday, January 27, 2009 at 11:00 AM here in the Wilmington Regional Office. Christine already has a meeting scheduled with David Towler at 10:00 AM that day so I'm pretty sure Dave is planning to here anyway. The projects are subject to the Coastal Stonnwaler Rules that look effect in October, 08. Projects that propose (remmenl measures for stormwater are required to have soils reports specifically describing the areas) where the treatment is proposed - including seasonal high water table clevation(s). Please review the submittal requirements, attached. Please note that the checklist for a complete application is in the bmp manual and should be reviewed. The most current supplement sheets, operation & maim. forms, etc. should be downloaded for each project since they change often. -Please respond ASAP to confine and reserve the scope meeting date on these proiects. Thanks, Janet Russell Express Coordinator I of 1 1/21/2009 3:47 PM :�� � o 9 411% North Carolina Department of Environment and AGA Natural Resources Request for Express Permit Review NCDENR co For DENR Use ONLY Reviewer: Submit L Time: 11L°= Confirm t - 23 SL 6 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 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(cDncmail.net • Fayetteville or Raleigh Region -David Lee 919-791.4203; david.lee(dncmaiLnet 0 Le�� • Mooresville & -Patrick Grogan 704-663.3772 or patrick.grogan(a),ncmail.net • Washington Region -Lyn Hardison 252-946-9215 or lvn.hardison(a.ncmail.net • Wilmington Region -Janet Russell 910-350.2004 or Janet✓ussell(u)ncmail.net NOTE: Project application received after 12 noon will be stamped in the following work day. Project Name: BACHELOR ENLISTED QUARTERS, MICAS P-632 " County: ONSLOW 130 Mr S Z 04CJ Applicant: CARL BAKER Company: MARINE CORPS BASE, CAMP LEJEUNE Address: BLDG 1005 MICHAEL ROAD City: MCB CAMP LEJEUNE, State: NC Zip: 28547 Phone:910-451-2213 Fax:910-451-2927 Email: cad.h.bakercDusmc.mil Project is Drains into C;NSW waters Project Located in WHITE OAK River Basin R E C E ( V ED Engineer/Consultant: Howard Resnik Company: Coastal Site Design, PC Address: P.O. BOX 4041 City: WILMINGTON, State: NC Zip: 28406 JAN 16 2009 Phone: 910-791-4441 Fax::910-791-1501 Email: howard coastalsitedesign.com DWO (Check all that apply) PROD # ® 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 #)j ® 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 ❑ Manna Development ❑ Urban Waterfront ® Land Quality ® Erosion and Sedimentation Control Plan with 11_07 acres to be disturbed.(CK # (for DENR use)) WETLANDS QUESTIONS MUST BE ADDRESSED BELOW ® Wetlands (401): Check all that apply Isolated wetland on Property ❑ Yes ® No Wetlands on Site ❑ Yes ® No Buffer Impacts: ❑ No ❑ YES: acre(s) Wetlands Delineation has been completed: ❑ Yes ❑ No Minor Variance: ❑ No ❑ YES US ACOE Approval of Delineation completed: ❑ Yes ❑ No Major General Variance ❑ No ❑ YES 404 Application in Process w/ US ACOE: ❑ Yes ❑ No 401 Application required: ❑Yes ❑ No If YES, ❑ Regular Permit Received from US ACOE ❑ Yes ❑ No Perennial, Blue line stream, etc on site ❑ yes ❑ No For DENR use only Fee Split for multiple permits: (Check # 1 Total Fee Amount $ SUBMITTAL DATES Fee I I SUBMITTAL DATES Fee CAMA $ 1 Variance ❑ Ma'; ❑ Min) 1 $ SW ❑ HD, ❑ LD, ❑ Gen $ 401.. $ LQS $ Stream Deter,_ I $ COASTAL SITE DESIGN, PC Wilmington, NC 28406 Phone: 910 791-4441 Fax: 910 791-1501 FOR STORMWATER EXPRESS REVIEW January 16, 2009 PROJECT NAME: Bachelor Enlisted Quarters, MCAS P-632 U AS A -A r--- LJA MCB Camp Lejeune, NC �e S, Onslow County PROJECT DESCRIPTION: This project is for the construction of barracks and a parking lot to be located on the Marine Corps Air Station Base at Camp Lejeune. The owner is the United States Marine Corps. There are no wetlands located within the area of the development. Stormwater from the site will drain into QNSW waters located in the White Oak River Basin (Index # 19-17-(0.5)). The project will be high density utilizing a wet detention basin as treatment for runoff, conveyed to the pond using both an underground stormwater collection system and above ground flumes / swales. This project is subject torl-;—_S Phase 11 equirements. Proposed impervious for the site is 50.9%. As with all high density stormwater projects, all runoff from impervious surfaces will be collected and conveyed to the wet detention basin for treatment. The project will have direct access onto Douglas Road. PROJECT BMP: high density wet detention basin STORMWATER ENGINEER/CONSULTANT: Coastal Site Design, PC 110 Box 4041 Wilmington, NC 28406 j�E C E I V ED Howard Resnik, PE �Ur;U{ haoward coastalsitedesign.com J&,1 1 6 2009 910 791 4441 office 910 791 1501 fax p1114Q ocpJ 4 �__- -- / �� A T/r1A / A X A D .y.I I I I III I I 10 n I II I.II I I I1� I I ��I 4 TI f TIT -Tj T17 TI I� Ij'i 10'I1I II P FF 2633:250 -M,E fI I „I. o � I I c •.,,' � '.I �it 1 c II Il i jN�`yi\ l a _ (a III "II I � I p I .#.#AAA j �A 4134Y xw`u"1ia1,11" ENCINaawc COMMAND MIO-ATTLA�TIc 06 uce uuv LCa[ux[ � v.cxsaxnue, xoxln BACHELOR ENLISTED QUARTERS iY08 NOON PROJECT: P-63P cAvaL xw-- P-636 III n eX§e e cull f I L 1 SRE GRAOINO AND STORM OMIN/LGE PLAN — — — OY 1. A01 iW0 IK-11NIL ...0 I.XJ IOUMAIYM