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SW8081007_HISTORICAL FILE_20081212
STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO. SW8 Ci O-1 DOC TYPE ❑ CURRENT PERMIT ❑ APPROVED PLANS HISTORICAL FILE ❑ COMPLIANCE EVALUATION INSPECTION DOC DATE 200812 l2 YYYYMMDD x �OF \N 7- Fi90 Michael F. Easley, Governor ' btU—i William G. Russ Jr., Secretary r North Carolina Department of f''nvirunment and Natural Resources � O C Coleen If Sullins Director Divisionof Water Quality December 12, 2008 Commanding Officer, c/o Carl Baker, Deputy Public Works Officer USMCB Camp Lejeune 1005 Michael Road Camp Lejeune, NC 25847 Subject: State Stormwater Management Permit No. SW8 081007 Camp Johnson - M200 Area Parking High Density Commercial Infiltration Basin Project Onslow County Dear Mr. Baker: The Wilmington Regional Office received a complete. State Stormwater Management Permit Application for Camp Johnson - M200 Area Parking on'.December 12, 2008. 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 %z are_forwarding Permit No. SW8 081007 dated December 12, 2008, for the construction of the _ Y subject project. -This. permit shall be effective from -the date of issuance until December 12, 2018, and shall be subject to the conditions and limitations as specified there r. P!ease,payspecial attention to the Operation.and Maintenance requirements in this permit. Failure to a"siabllsK an adequate_._ system for operation and maintenance of the stormwater management system will result Fn future compliance problems. U;. 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 150B of the North Carolina General Statutes, and filed with the Office of A 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. Sincerely, $. Georgett Se" cott� Stormwater Supervisor Division of Water Quality GDS/can: S:\WQS\STORMWATER\PERMIT\081007.dec08 cc: Bryan Dick, Earth Tech Onslow County Building Inspections Christine Nelson cWilmington-RegionaI-Office. Central Files o, N r hCarolina wahrrrr/l� North Carolina Division of Water Quality 127 Cardinal Drive l?xtensian Wilmington, NC 28405 Phone (910) 796-7215 Customer Service: Wilmington Regional Office Internet: Fax (910)350-2004 1-877-623-6748 An Equal Opportunity/Affirmative Action Employer— 50% Recycled/10% Post Consumer Paper • 4 State Stormwater Management Systems Permit No. SW8 081007 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 Officer c% Carl Baker, Deputy Public Works Officer & USMCB Camp Lejeune Camp Johnson - M200 Area Parking Wilson Rd., Camp Lejeune, Onslow County FOR THE construction, operation and maintenance of two infiltration basins 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 December 12, 2018, 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. 2. 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 controls have been designed to handle the runoff from a total of 117,603 square feet of impervious area. 3. These basins must be operated with 30' vegetated filters. 4. The tract will be limited to the amount of built -upon area indicated in Section 1.8 on page 3 of this permit, and as shown on the approved plans. This permit does not provide any allocation of built -upon area for future development. 5. 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. Page 2 of 8 State Stormwater Management Systems Permit No. SW8 081007 6. The runoff from all built -upon area within the permitted drainage areas of this project must be directed into the permitted stormwater control system. 7. The built -upon areas associated with this project shall be landward of all perennial and intermittent surface waters. located at least 50 feet 8. The following design criteria have been permitted for the infiltration basins and must be provided and maintained at design condition: Basin 1 Basin 2 a. Drainage Area, acres: 1.71 1.56 Onsite, ft2: 74,582 68,055 Offsite, ft2: none none b. Total Impervious Surfaces, ft2: 59,479 58,124 Onsite, ft2: 59,479 58.124 Offsite, ft2: none none C. Design Storm, inches: 1.5 1.5 d. Basin Depth, feet: 1.60 2.30 e. Bottom Elevation, FMSL: 14.40 13.70 f. Bottom Surface Area, ft2: 6,281 6,490 g. Bypass Weir Elevation, FMSL: 15.45 14.70 h. Permitted Storage Volume, ft3: 7,203 7,015 i. Predevelopment 1 yr 24 hr peak flow, cfs: 0.02 0.02 j. Post -development 1 yr 24 hr peak flow, cfs: 1.16 1.20 k. Type of Soil: Baymeade Baymeade I. Expected Infiltration Rate, in/hr: 3.20 3.40 M. Seasonal High Water Table, FMSL: 12.00 11.50 n. Time to Draw Down, hours: 3.8 3.8 o. Receiving Stream/River Basin: Northeast Creek /WO New River/ White Oak P. Stream Index Number: 19-16-45 19-16-45 q. Classification of Water Body: "Sc, NSW" "Sc, HQW, NSW" It. 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 times provide the operation and maintenance necessary to assure the permitted stormwater system functions at optimum efficiency. The approved Operation and Maintenance Plan must be followed in its entirety and maintenance must occur at the scheduled intervals including, but not limited to: a. Semiannual scheduled inspections (every 6 months). b. Sediment removal. C. Mowing and revegetation of slopes and the vegetated filter. d. Immediate repair of eroded areas. e. Maintenance of all slopes in accordance with approved plans and specifications. f. Debris removal and unclogging of bypass structure, infiltration media, flow spreader, catch basins, piping and vegetated filter. g. A clear access path to the bypass structure must be available at all times. Page 3 of 8 State Stormwater Management Systems Permit No. SW8 081007 4. Records of maintenance activities must be kept for each permitted BMP. The reports 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 and inspection records for each BMP. The report shall summarize the inspection dates, results of the inspections, and the maintenance work performed at each inspection. The facilities shall be constructed as shown on the approved plans. This permit shall become voidable unless the facilities are constructed in accordance with the conditions of this permit, the approved plans and specifications, and other supporting data. 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. 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. 9. Access to the stormwater facilities shall be maintained via appropriate 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 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. 11. The permittee shall submit final site layout and grading plans for any permitted future areas shown on the approved plans, prior to construction. 12. A copy of the approved plans and specifications shall be maintained on file by the Permittee for a minimum of ten years from the date of the completion of construction. Page 4 of 8 State Stormwater Management Systems Permit No. SW8 081007 13. The Director may notify the permittee when the permitted site does not meet one or more of the minimum requirements of the permit. Within the time frame specified in the notice, the permittee shall submit a written time schedule to the Director for modifying the site to meet minimum requirements. The permittee shall provide copies of revised plans and certification in writing to the Director that the changes have been made. III. GENERAL CONDITIONS This permit is not transferable to any person or entity except after notice to and approval by the Director. 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 the appropriate 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. 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 reissuance or termination does not stay any permit condition. 8. Unless specified elsewhere, permanent seeding requirements for the stormwater controls 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 2008- 211, Title 15A NCAC 21-1.1000, and NCGS 143-215.1 et. al. 11. The permittee shall notify the Division in writing 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 081007 12. The permittee shall submit a permit renewal application 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 12th day of December 2008. NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION 1.3MiU Ior coieenm. sumns, uirector Division of Water Quality By Authority of the Environmental Management Commission Page 6of8 State Stormwater Management Systems Permit No. SW8 081007 Camp Johnson - M200 Area Parking Stormwater Permit No. SW8 081007 Onslow Countv 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 7 of 8 State Stormwater Management Systems Permit No. SW8 081007 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 bypass structure weir elevation is per the approved plan. 6. The bypass structure is located per the approved plans. 7. A Trash Rack is provided on the 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. All required design depths are provided. 13. All required parts of the system are provided. 14. The required system dimensions are provided per the approved plans. cc: NCDENR-DWQ Regional Office Onslow County Building Inspections Page 8 of 8 DWQ USE ONLY Date Received Fee Paid Permit Number U-3o-o bLIC.)-- 3 CC, Sw 011(x� 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 011-wr"t .11WHIG LTII: M63111`I 1. Applicants name (specify the name of the corporation, individual, etc. who owns the project): MCB Camp Lejeune 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: City: MCB Camp Lejeune State:NC Zip:28547-2521 Phone: (910 ) 451-2213 Fax: 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.): USMCB Camp lohnson - M200 5. Location of Project (street address): City:Camp Lejeune County:Onslow 6. Directions to project (from nearest major intersection): From Camp lohnson gate take Montford Cover Rd 3 miles to Wilson Rd, Tom right. Project is on the right at intersection with Taft Rd. 7. Latitude:34-43-25.6 N Longitude:77-24-47.9 W of project 8. Contact person who can answer questions about the project: Name:Bryan Dick Telephone Number: (919-854-6252 ) Email:bryan.dick@earthtech.com 7gM.pdif II. PERMIT INFORMATION: T 3 0 2008 1. Specify whether project is (check one): ®New❑Renewal ication Form SWU-101 Version 8.07 Page I of4 ni�u n r.,,., 2. If this application is being submitted as the result of a renewal or modncca�hon to an existing permit, list the existing permit numberNA I and its issue date (if known) 3. Specify the type of project (check one): JBY: 11 ❑Low Density ®High Density []Redevelop ❑General Permit ❑Universal SMP ❑Other 4. Additional Project Requirements (check applicable blanks): ❑CAMA Major ❑Sedimentation/Erosion Control 0404/401 Permit ❑NPDES Stormwater Information on required state permits can be obtained by contacting the Customer Service Center at 1-877-623-6748. 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 be routed via erassed swales from imperivous areas to 2_infiltration basins. The infiltration basins meet DWO requirments for drawdown time and is sized for the required treatment volume This project is within NOT a 1 /2 mile of SA waters Basin locations have been tested for infiltration capacity and approved 2. Stormwater runoff from this project drains to the White Oak River basin. 3. Total Site Area: 10.1 acres 4. Total Wetlands Area: 0 acres 5. 100' Wide Strip of Wetland Area: NA acres (not applicable if no Wetlands exist on site) 6. Total Project Area**: 5.6 acres 7. Project Built Upon Area: 48 % 8. How- many drainage areas does the project have? 2 9. 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. Basin Information Drainage Area 1 Drainage Area 2 Receiving Stream Name Northeast Creek New River Stream Class & Index No. SC, NSW Index# 19-16 45 SC, HQW, NSW Index# 19 1 Drainage Area (so 74582 � 7) a� 68055 1,5fo xc Existing Impervious* Area (sf) 11900 0 Proposed Impervious*Area (sf) 1 47579 58124 % Impervious* Area (total) 80% 85% Impervious* Surface Area Drainage Area 1 Drainage Area 2 On -site Buildings (sf) 0 0 On -site Streets (sf) 3200 0 On -site Parking (sf) 56279 58124 On -site Sidewalks (sf) 0 0 Other on -site (sf) 0 0 Off -site (sf) 0 0 Total (sf): 59479 58124 Form SWU-101 Version 8.07 Page 2 of 4 * Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas, sidezoalks, gravel areas, etc. **Total project area shall be calculated based on the current policy regarding inclusion of wetlands in the built upon area percentage calculation. 10. How was the off -site impervious area listed above IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS One of the following deed 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. 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 deed 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 State, 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 and General Permits Unit at (919) 733-5083 for the status and availability of these forms. 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 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 Form SWU-101 Version 8.07 Page 3 of 4 RF�'Y�.TVFi)I OCT 3 0 700A BY: 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 hup://h2o.enr.state.nc.us/su/msi maos.htm) 1. Please indicate that you have provided the following required information by initiating in the space provided next to each item. • Original and one copy of the Stormwater Management Permit Application Form • Original and one copy of the Deed Restrictions & Protective Covenants Form • Original of the applicable Supplement Form(s) and O&M agreement(s) for each BMP • Permit application processing fee of $505 (54,000 for Express) payable to NCDENR • Calculations & detailed narrative description of stormwater treatment/management • Copy of any applicable soil report • Three 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, please complete this section. Designated agent (individual or firm): Bryan Dick, EI, PH, Earth Tech Mailing Address: 701 Corporate Ctr. Dr., Suite 475 Phone: (919 ) 854-6252 Email:bryan.dick@earthtech.com State:NC Zip:27607 Fax: (919 ) 854-6259 VIII. APPLICANT'S CERTIFICATION I I, (print or type name of person listed in Ceneral Information, item 2) 6 l 15uke 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 cove n will be ref ded, and that the proposed project complies with the requirements of 15A NCAC 21-1.1000. i // A Date: Form SWU-101 Version8.07 Page 4of4 OCT 3 7009 P. 01 TRANSACTION REPORT DEC-15-2008 MON 07:30 AM t t t FOR: NCDENR 910 350 2004 SEND DATE START RECEIVER TX TIME PAGES TYPE NOTE M# DP DEC-15 07:27 AM 919198546259 2'48" 9 FAX TX OK 755 t TOTAL 2M 48S PAGES: 9 t l< t �l;�tl;tttttl<tt�X<tttttl;t�X<tl;t�l<ttX<l;t�X<l;a;�tttX<l;��t�ttttttttttttttttt>Kttttt�tttt>Kttttttttt��ttttttttl;tt� State of North Carolina Department of Environment and Natural Resources Wilmington Regional Office Michael F. Easley, Governor William G. Ross, Jr., Secretary FAX COVER SHEET Date: l2 - l5 -o r- - To: Co: Fax: Re: Hard Copy to follow No. Pages (excl. cover): 3 Express Permitting From: Sandra ixum Phone 910 796-7265 Fax: 910 3f ) 50-20Q4 127 Cardinul Drive Extcnsion, Wilmington, NC 28405 • (910) 796-7215 • An Equal Opportunity Affirmative Action Employer EarthTech A TKO Irunational ❑A. Company 'f0. Christine Nelson EXPRESS PER INCDENR 127 Cardinal Dr. Extension Wilmington, NC 28405 Phone:(910)796-7215 .. WE ARE SENDING YOU: DEC 1 2 2008 Letter of Transmittal DATE: 11-Dec-08 PROJEC'INO.: 106132.01 ATTENTION: RE: 'M200 Area Parking ❑� Attached ❑ Prints ❑ Under separate cover via the following items: ❑ Shop Drawings , ❑ _� Change Order - ❑ Plans ❑ Samples ❑ Swaricatons ? �, ❑ Copy of Letter ❑ COPIES DATE NO. DESCRIPI ION 2 11'-'Dec-08 ":' 1 Sheet G•3 .. ;.:. .. -.. ",. . ,. .. 2 11-Dec-08 1 Sheet C-8 THESE ARE'FRANSMMfFD AS CHECKED 131-ILOW: ❑ For approval . ❑ Approved as submitted ❑ - For your use ❑ Approved as noted ❑ "nested I❑: / Returned for corrections ❑ For review and comment ' ❑ ❑ For Bids Due , 2000 ❑ Resubmit copies for approval ❑ Submit copies for distribution ❑ Return corrected prints ❑ Prints Returned After Loan to us REMARKS: Christine, Enclosed are the plansheets you requsted for the M200 project at MCB CLNC. - If you have any questions or comments, please feel free to call at 919-854-6223 or e-mail @ Neil.Dean@earthtech.com Thanks, Neil Dean COPY TO: Project File; B. Dick Ifenclosures are not as noted, kindly notify us at once. 701 Corporate Center Drive, Suite 475, Raleigh, North Carolina 27607-5074 Te l cp h o ne 919. 854. 6200 17 a cs iani le 919. 854. 6259 lransmittalB300.doc RE: request for additional info: SW8 081007 - M200 Area Parking Subject: RE: request for additional info: SW8 081007 - M200 Area Parking From: "Dick, Bryan" <Bryan.Dick a aecom.com> Date: Thu, 4 Dee 2008 18:02:31 -0500 To: "Christine Nelson" <Christine.Nelson@ncmai1.net> I will call you in the morning and get necessary amendments out to you tomorrow. Thanks Bryan Please note email address is changed Bryan M. Dick, PH Project Manager EARTH TECH I AECOM 701 Corporate Center Drive Suite 475 Raleigh NC 27607 (919) 854-6200 - voice (919) 854-6259 - Fax www.earthtech.aecom.com bryan.dick@aecom.com -----Original Message ----- From: Christine Nelson[mailto:Christine.Nelson@ncmail.net] Sent: Thursday, December 04, 2008 5:23 PM To: Dick, Bryan; David Towler Cc: Janet Russell; Sandra Exum Subject: request for additional info: SW8 081007 - M200 Area Parking Bryan, I had a chance to look through the items submitted to me on Nov 25th and had a few questions. I spoke to Neil Dean regarding them, but i think he was going to pass them off to you when you returned to the office tomorrow. 1. Please verify the road BOA identified in DA A vs the drainage area map on G-3. It seems that the entire width of the road was included in the drainage area, which appears to have more BOA than allocated in the application. Is the road crowned? 2. Did you re -run HydroCAD for DA A based on the new information? The version submitted on 11/25 was dated 10/27/08 and has the old numbers. 3. The storage volume and storage depth on plan sheet C-8 doesn't appear to have been updated based on the latest elevations. Please give me a call tomorrow morning so we can discuss time lines for getting these items clarified in order to get this permit issued. Thanks! Christine I of 1 12/8/2008 5:01 PM NOV 2 5 7008 BY: STORMWATER MANAGEMENT PLAN PREPARED FOR: MCB CAMP LEJEUNE AREA 200 DATE: 1 1 -24-08 EARTH TECH I AECOM 701 CORPORATE CENTER DR., SUITE 475 RALEIGH, NC 27607 919-854-6200 PREPARED BY: BRYAN M. DICK, EIT, PH CHECKED BY: NEIL DEAN, PE SEAL S x 026453 ` 1tillJE�� Dle ✓- v J+'4I2oc8 NOV 2 5 2008 SY:__ PROJECT DESCRIPTION THIS DOCUMENT IS TO SERVE AS A STORMWATER MANAGEMENT PLAN FOR THE MCB CAMP LEJEUNE -CAMP JOHNSON AREA 200 PROJECT. THE PROJECT CONSISTS OF THE ADDITION 2 POV PARKING AREAS TO THE EXISTING, DEVELOPED SITE. THE COMPLETED PROJECT WILL PROVIDE FOR EXPANSION OF BASE FACILITIES TO ACCOMMODATE ADDITIONAL STAFF IN THE COMING YEAR. CONTACT INFORMATION EARTH TECH, INC. ATTN: BRYAN M. DICK, PH 701 CORPORATE CENTER DR., SUITE 475 RALEIGH. NC 27607 TELEPHONE: 919-854-6252 FAX: 919-854-6259 IDENTIFY PROJECT INVOLVEMENT THIS PROJECT IS A PART OF THE WHITE OAK RIVER BASIN, AND IS CURRENTLY NOT SUBJECT TO ANY BUFFER RULES. THE SITE IS APPROXIMATELY 1,000 FEET FROM THE NEW RIVER APPROXIMATELY 2.5 MILES FROM THE CAMP JOHNSON GATE. THE PROPOSED PROJECT STORMWATER PLAN WILL MEET THE REQUIREMENTS OF RETAINING THE RUNOFF VOLUME THE 1.5 INCH RAINFALL EVENT PER THE REQUIREMENTS BY THE STATE AS REFERENCED FROM THE DWQ STORMWATER MANUAL, JULY 2007. TWO INFILTRATION BASINS ARE USED TO TWO DRAINAGE AREAS AND LEVEL SPREADERS TREATS THE BYPASS FLOW AT EACH BASIN. THIS PROJECT IS NOT WITHIN 0.5 MILES OF SA WATERS AND INFILTRATION DEVICES ARE NOT REQUIRED BY DWQ. THE TREATMENT VOLUME PROVIDED AS WELL AS THE USE OF SWALES AND ADEQUATE INFILTRATION CAPACITY WILL PROVIDE A POST DEVELOPMENT PEAK FLOW RATE THAT IS LESS THAN THE PRE -DEVELOPMENT CONDITION, PER THE JULY 2007 START DATE FOR MEETING PHASE II REQUIREMENTS. HYDROCAD MODELS BASES ON TR-55 METHODS WERE USED TO VALIDATE THE COMPLETE CAPTURE OF THE RUNOFF FOR THE 1.5" TYPE III - 24 HR. STORM. THE BYPASS DEVICES ARE DESIGNED TO DISTRIBUTE THE IO YEAR STORM AT A NON -EROSIVE VELOCITY. STORMWATER DESIGN PARAMETERS THE INFILTRATION BASINS ARE BASED ON THE FOLLOWING PARAMETERS OR OBJECTIVES: • PROVIDE 85% TSS REMOVAL • PROTECT THE VALUE OF THE RECEIVING WATER RESOURCE • 1.5" RAINFALL FOR BASIN STORAGE SIZING • THE 1 YR RAINFALL FOR OUTLET STRUCTURE AND ROUTING DESIGN TO MAINTAIN A POST DEVELOPMENT PEAK FLOW THAT IS LESS THAN PRE - DEVELOPMENT PEAK FLOW NOV 2 5 2008 • RATIO OF IMPERVIOUSSURFACE TO THE TOTAL AREA OF THE DRAINAGE AREA • EXCEED A MINIMUM OF 2.0' CLEARANCE FROM THE SEASONAL HIGH WATER TABLE • RAINFALL EXCEEDING THE DESIGN STORM WILL BYPASS THE BASINS AND FLOW THROUGH A MINIMUM OF 50' LONG VEGETATED FILTER • LEVEL SPREADER HAS NON -EROSIVE VELOCITY ON THE 10 YEAR EVENT DISCUSSION OF TREATMENT MEASURES THE PROPOSED TREATMENT IS TO USE TWO INFILTRATION BASINS TO MEET THE TSS AND PEAK FLOW REQUIREMENTS SET FORTH BY DWQ. THE SOILS OF THE PROJECT SITE ARE APPROPRIATE SOILS FOR INFILTRATION AND THE SEASONAL HIGH WATER TABLE AT THE SITE WILL ALLOW CONSTRUCTION OF THE BASINS WITH AT LEAST A 2' OF CLEARANCE. BYPASS DEVICES ARE PROVIDED TO ALLOW ANY RUNOFF VOLUME THAT EXCEEDS THE DESIGN STORAGE VOLUME TO BE ROUTED TO A LEVEL SPREADER WITH A VEGETATED FILTER STRIP. THE LEVEL SPREADER LENGTH IS DESIGNED TO HANDLE THE 10 YR PEAK RUNOFF RATE, SO NO BYPASS OF THE FILTER IS NECESSARY. PHASE II REQUIREMENTS ARE MET BY USING A GRASSED SWALE TO COLLECT SHEET FLOW FROM THE IMPERVIOUS AREAS AND BY THE INFILTRATION AND STORAGE VOLUME PROVIDED IN EACH BASIN. CONCLUSION THIS STORMWATER MANAGEMENT PLAN REPRESENTS AN ENVIRONMENTALLY SENSITIVE AND EFFECTIVE PLAN FOR UTILIZING THE PROPOSED STORMWATER TREATMENTS TO ACCOMMODATE THE INCREASED RUNOFF OF THE PROPOSED SITE DEVELOPMENT. NHalf Moon Ja ks' nvi NC RO urEza Pirfey Green w AD 1 lw-�W5 P 3 aQ F2 CAMPBELL STREET ..'Mann ,nrps Nr a ' �O, A h BREWSTER BOULEVARD ;' . N , r m LO x Project Location ,• s moo• o rr" BIRCH -� �" � � � � � EE( , � Clrrp tej:��rnasMC B;,•' ' iL _. .51R CFQ a , GYMA ' R °y e° o y 01� 1 T VERONA LOOP ROAD ',• PROJECT SITE I , Legend 0 05 ' 2W. Vicinity Map EARTH TECH AECO41 _ PAVED Area M200 Parking UNPAVED Camp Lejeune Marine Corps Base Onslow County, NC Legend Soils Map —Project Site EARTH TECH 1 M200 Area Parking Soil Map Units Camp Lejeune Marine Corps Base Existing Roads Onslow County, North Carolina — PAVED 0 150 300 600 Fit UNPAVED 5�-=�J, 1 inch = 300 feet Legend Wetlands and DWQ --PreliminaryWetlandsBoundaries EARTH TECH Classification Map —DWQ Named Streams Unnamed Tributaries Area M200 Parking Existing Roads Camp Lejeune Marine Corps Base — PAVED OnsloW County, North Carolina UNPAVED 0 500 1,000 2,000 Feet t, 1 inch = 1,000 feet Page I of 2 CLJN.CLJN Jurisdictional_wetland_area SIDE Feature Class Description I Spatial I Attributes Keywords Theme: Wetlands Area, Location Place: Camp Lejeune Stratum: wetlands, planning, jurisdictional Temporal: None Description Abstract CLJN.CUN.jurisdictional_wetland—area contains polygons representing wetlands created from the Jurisdictional Wetlands obtained from field survey and approved by the Corps of Engineers, Wilmington, NC. Purpose Provide wetlands identification as it relates to planning, construction siting and management tasks. Supplementary Information CUN.CUN.jurisdictional_wetland_area created from feature class CUN.CUN.wetland_area New feature class 2006 Status of the data Complete - Last Reviewed: 10/17/06 Data update frequency: As needed Time period for which the data is relevant Date and time: 2005 Description: REQUIRED: The basis on which the time period of content information is determined. Publication Information Who created the data: I&E/EMD/ECON Date and time: REQUIRED: The date when the data set is published or otherwise made available for release. Data storage and access information File name: CUN.CUN.jurisdictional_wetland_area 0 C T 3 0 2008 file://C:\Documents and Settings\lan.Jewell\Local Settings\Temp\metadata3.htm 2/8/2008 Page 2 of 2 Type of data: vector digital data Location of the data: . \\mcbclnasOl \GIS_User_Storage\Lejeune\BLSD\GIS\ECRGCInsta IlationData\Lejeune\Data Req uests\: \081007 Earth Tech\New Personal Geodatabase.mdb Data processing environment: Microsoft Windows 2000 Version 5.2 (Build 3790) Service Pack 1; ESRI ArcCatalog 9.1.0.780 Constraints on accessing and using the data Details about this document Contents last updated: 20070814 at time 09133300 Who completed this document Standards used to create this document ocT 3 0 2008 file://CADocuments and Settings\lan.Jewell\Local Settings\Temp\metadata3.htm 2/8/2008 106132 200 Area - Infiltration Basin A Drain a Area Sf 74582 Imp Area (sf) 59479 (A) Drainage Area (Act 1.712167 (la Imp Fraction 0.80 (Ro)Rainfall Depth Per State SW P(in) 1.5 Step 1: Determine Runoff Volume Simple Method a I Rv = .05 +.9(1,t) = Rv (poet) =.05+.9'.67 Rv (pre) = .05+.9'0 b V= 3630x RD x R x A Post LNOV 2 5 20088 Designed By: BMD Date: 10/25/2008 V (Post) = 7158 cf Min. Treatment Vol Post - Pre )= 7158 cf Treatment Vol in Ac-in 1.97 actin Step 2: Determine Surface Area- Min. 3.2 (K) Infiltration Rate (in/hr) T Intended Days to Infiltrate (days) 1 2 a. V = A=5232/(2'(6.69'2)) Min A in = 559.2 at A — 2*(K *T) Step 3. Determine Dimensions Scientist Site Visit and Soils Storage Elevation 15.45 Flow Splitter- Inlet Elevation Elevation 14.40 Flow Splitter - Bypass Flow Outlet )litter - Outlet to Basin Elev. 15.00 Top of Berm Elevation mvation Depth 0.67 Storage Depth Surface Area Required (Avg of Top and Bottom SA) Top Width @ Storage Elev 50.15 Top Length @ Storage Bottom Width 43.85 Bottom Length 4. Calculation of Volumetric Flow Rate of Infitration and Drawdown 1 from infiltration: 'V is actually me Uarcian Flow Hate Q=A.(K). Conversion=cfs ExampleCalculatim ofQ: SurfaceArea=3184sf (K)=2.42in1hr 3184sf 2.42in I ft Ihr=0.18cfs hr 12in 3600s )rawdown Time for Treatment Volume Drawdown Time for Desiain Vol Volume Cl)O Hours Da s 7203 0.461 4.3 0.18 ET2 1.05 6817 Target Area 6850 sf 148.9 Surface Area Storage = 7467 of 142.6 Surface Area Bottom = 6253 sf Av Surface Area = 6860 of Example Calculation Q=0.18cfs V=3184cf V =T 3184ft' is Ihr=2.Iltrs=.049days Q I 0.18 ft' 3600s Area (sf) (K)in/hr D (infiltration) = 0.46 off; 6253 3.2 DEC 1 0 2008 106132 M200 Basin A- Post 12-9-08 BY: Type Ill 24-hr Rainfall=3.70" Prepared by Earth Tech Page 2 HydroCADO 8.00 s/n 003562 @ 2006 HydroCAD Software Solutions LLC 12/9/2008 Pond 2P: Infiltration Basin B Inflow Area = 1.712 ac, Inflow Depth = 2.36" Inflow = 4.60 cfs @ 12.09 hrs, Volume= 0.337 of Outflow = 0.51 cfs @ 11.65 hrs, Volume= 0.337 af, Atten= 89%, Lag= 0.0 min Discarded = 0.51 cfs @ 11.65 hrs, Volume= 0.337 of Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 of Routing by Stor-Ind method, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Peak Elev= 15.16' @ 12.87 hrs Surf.Area= 0 sf Storage= 5,199 cf Plug -Flow detention time= 78.5 min calculated for 0.337 of (100% of inflow) Center -of -Mass det. time= 78.5 min ( 891.5 - 813.1 ) Volume Invert Avail.Storage Storage Description #1 14.40' 7,203 cf Custom Stage Data Listed below Elevation Cum.Store (feet) (cubic -feet) 14.40 0 15.45 7,203 Device Routing Invert Outlet Devices #1 Discarded 0.00' 0.51 cfs Exfiltration at all elevations #2 Secondary 15.45' 4.0' long x 0.5' breadth Broad -Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 Coef. (English) 2.80 2.92 3.08 3.30 3.32 Discarded OutFlow Max=0.51 cfs @ 11.65 hrs HW=14.41' (Free Discharge) L1=Exfiltration (Exfiltration Controls 0.51 cfs) $econdary OutFlow Max=0.00 cfs @ 0.00 hrs HW=14.40' (Free Discharge) 2=Broad-Crested Rectangular Weir( Controls 0.00 cfs) ]�EJE�'1F:�VJFll� DEC 1 02008 106132 M200 Basin A- Post 12-9-08 BY' Type 111 24-hr Rainfall=3.70" Prepared by Earth Tech Page 3 HydroCAD® 8.00 s/n 003562 © 2006 HydroCAD Software Solutions LLC 12/9/2008 Pond 2P: Infiltration Basin B Hydrograph 4.60 cfs Inflow Area=1.712'ac 6- Peak Elev=15.16' I 4 Storage=5 199-cf - 3 a a LL I I I I n sl 1 f� r 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) ® Inflow ❑ outflow ® Discarded M Secondary 106132 M200 Basin A- Post 12-9-08 Prepared by Earth Tech �JE;�'1F:Y`VJE� DEC 1 0 2008 By: Type 111 24-hr Solutions LLC Hydrograph for Pond 2P: Infiltration Basin B Time Inflow Storage Elevation Outflow Discarded Secondary (hours) (cfs) (cubic -feet) (feet) (cfs) (cfs) (cfs) 0.00 0.00 0 14.40 0.00 0.00 0.00 1.00 0.00 0 14.40 0.00 0.00 0.00 2.00 0.00 0 14.40 0.00 0.00 0.00 3.00 0.00 0 14.40 0.00 0.00 0.00 4.00 0.00 0 14.40 0.00 0.00 0.00 5.00 0.00 0 14.40 0.00 0.00 0.00 6.00 0.00 0 14.40 0.00 0.00 0.00 7.00 0.00 1 14.40 0.00 0.00 0.00 8.00 0.02 3 14.40 0.02 0.02 0.00 9.00 0.06 8 14.40 0.06 0.06 0.00 10.00 0.11 15 14.40 0.11 0.11 0.00 11.00 0.22 31 14.40 0.22 0.22 0.00 12.00 2.77 1,194 14.57 0.51 0.51 0.00 13.00 0.45 5,185 15.16 0.51 0.51 0.00 14.00 0.29 4,615 15.07 0.51 0.51 0.00 15.00 0.22 3,675 14.94 0.51 0.51 0.00 16.00 0.15 2,508 14.77 0.51 0.51 0.00 17.00 0.12 1,163 14.57 0.51 0.51 0.00 18.00 0.09 14 14.40 0.10 0.10 0.00 19.00 0.08 12 14.40 0.08 0.08 0.00 20.00 0.08 11 14.40 0.08 0.08 0.00 21.00 0.07 10 14.40 0.07 0.07 0.00 22.00 0.06 9 14.40 0.06 0.06 0.00 23.00 0.06 8 14.40 0.06 0.06 0.00 24.00 0.05 7 14.40 0.05 0.05 0.00 25.00 0.00 0 14.40 0.00 0.00 0.00 26.00 0.00 0 14.40 0.00 0.00 0.00 27.00 0.00 0 14.40 0.00 0.00 0.00 28.00 0.00 0 14.40 0.00 0.00 0.00 29.00 0.00 0 14.40 0.00 0.00 0.00 30.00 0.00 0 14.40 0.00 0.00 0.00 31.00 0.00 0 14.40 0.00 0.00 0.00 32.00 0.00 0 14.40 0.00 0.00 0.00 33.00 0.00 0 14.40 0.00 0.00 0.00 34.00 0.00 0 14.40 0.00 0.00 0.00 35.00 0.00 0 14.40 0.00 0.00 0.00 36.00 0.00 0 14.40 0.00 0.00 0.00 37.00 0.00 0 14.40 0.00 0.00 0.00 38.00 0.00 0 14.40 0.00 0.00 0.00 39.00 0.00 0 14.40 0.00 0.00 0.00 40.00 0.00 0 14.40 0.00 0.00 0.00 41.00 0.00 0 14.40 0.00 0.00 0.00 42.00 0.00 0 14.40 0.00 0.00 0.00 43.00 0.00 0 14.40 0.00 0.00 0.00 44.00 0.00 0 14.40 0.00 0.00 0.00 45.00 0.00 0 14.40 0.00 0.00 0.00 46.00 0.00 0 14.40 0.00 0.00 0.00 47.00 0.00 0 14.40 0.00 0.00 0.00 48.00 0.00 0 14.40 0.00 0.00 0.00 Rainfall=3.70" Page 4 7RJF;�'7>♦ Y'57���� DEC 1 0 2008 106132 M200 Basin A- Post 12-9-08 BY: Tiype I// 24-hr Rainfall=3.70" Prepared by Earth Tech Page 5 HydroCADO 8.00 s/n 003562 © 2006 HydroCAD Software Solutions LLC 12/9/2008 Stage -Discharge for Pond 2P: Infiltration Basin B Elevation Discharge Discarded Secondary (feet) (cfs) (cfs) (cfs) 14.40 0.00 0.00 0.00 14.41 0.51 0.51 0.00 14.42 0.51 0.51 0.00 14.43 0.51 0.51 0.00 14.44 0.51 0.51 0.00 14.45 0.51 0.51 0.00 14.46 0.51 0.51 0.00 14.47 0.51 0.51 0.00 14.48 0.51 0.51 0.00 14.49 0.51 0.51 0.00 14.50 0.51 0.51 0.00 14.51 0.51 0.51 0.00 14.52 0.51 0.51 0.00 14.53 0.51 0.51 0.00 14.54 0.51 0.51 0.00 14.55 0.51 0.51 0.00 14.56 0.51 0.51 0.00 14.57 0.51 0.51 0.00 14.58 0.51 0.51 0.00 14.59 0.51 0.51 0.00 14.60 0.51 0.51 0.00 14.61 0.51 0.51 0.00 14.62 0.51 0.51 0.00 14.63 0.51 0.51 0.00 14.64 0.51 0.51 0.00 14.65 0.51 0.51 0.00 14.66 0.51 0.51 0.00 14.67 0.51 0.51 0.00 14.68 0.51 0.51 0.00 14.69 0.51 0.51 0.00 14.70 0.51 0.51 0.00 14.71 0.51 0.51 0.00 14.72 0.51 0.51 0.00 14.73 0.51 0.51 0.00 14.74 0.51 0.51 0.00 14.75 0.51 0.51 0.00 14.76 0.51 0.51 0.00 14.77 0.51 0.51 0.00 14.78 0.51 0.51 0.00 14.79 0.51 0.51 0.00 14.80 0.51 0.51 0.00 14.81 0.51 0.51 0.00 14.82 0.51 0.51 0.00 14.83 0.51 0.51 0.00 14.84 0.51 0.51 0.00 14.85 0.51 0.51 0.00 14.86 0.51 0.51 0.00 14.87 0.51 0.51 0.00 14.88 0.51 0.51 0.00 14.89 0.51 0.51 0.00 14.90 0.51 0.51 0.00 14.91 0.51 0.51 0.00 14.92 0.51 0.51 0.00 Elevation Discharge Discarded Secondary (feet) (cfs) (cfs) (cfs) 14.93 0.51 0.51 0.00 14.94 0.51 0.51 0.00 14.95 0.51 0.51 0.00 14.96 0.51 0.51 0.00 14.97 0.51 0.51 0.00 14.98 0.51 0.51 0.00 14.99 0.51 0.51 0.00 15.00 0.51 0.51 0.00 15.01 0.51 0.51 0.00 15.02 0.51 0.51 0.00 15.03 0.51 0.51 0.00 15.04 0.51 0.51 0.00 15.05 0.51 0.51 0.00 15.06 0.51 0.51 0.00 15.07 0.51 0.51 0.00 15.08 0.51 0.51 0.00 15.09 0.51 0.51 0.00 15.10 0.51 0.51 0.00 15.11 0.51 0.51 0.00 15.12 0.51 0.51 0.00 15.13 0.51 0.51 0.00 15.14 0.51 0.51 0.00 15.15 0.51 0.51 0.00 15.16 0.51 0.51 0.00 15.17 0.51 0.51 0.00 15.18 0.51 0.51 0.00 15.19 0.51 0.51 0.00 15.20 0.51 0.51 0.00 15.21 0.51 0.51 0.00 15.22 0.51 0.51 0.00 15.23 0.51 0.51 0.00 15.24 0.51 0.51 0.00 15.25 0.51 0.51 0.00 15.26 0.51 0.51 0.00 15.27 0.51 0.51 0.00 15.28 0.51 0.51 0.00 15.29 0.51 0.51 0.00 15.30 0.51 0.51 0.00 15.31 0.51 0.51 0.00 15.32 0.51 0.51 0.00 15.33 0.51 0.51 0.00 15.34 0.51 0.51 0.00 15.35 0.51 0.51 0.00 15.36 0.51 0.51 0.00 15.37 0.51 0.51 0.00 15.38 0.51 0.51 0.00 15.39 0.51 0.51 0.00 15.40 0.51 0.51 0.00 15.41 0.51 0.51 0.00 15.42 0.51 0.51 0.00 15.43 0.51 0.51 0.00 15.44 0.51 0.51 0.00 15.45 0.51 0.51 0.00 lw ! NOV 2 5 2008 106132 200 Area - Infiltration Basin B Drain a Area (Sf) 68055 Imp Area (at) 58124 (A)Drain a Area (Ac) 1.562328 (]r) Imp Fraction 0.85 �(Ro)Rainfall Depth Pei State SWP(in) 1.5 Step 1: Determine Runoff Volume Simple Method a. Rv = .05 +.9(I,,) = Rv (post) Rv (pre) = .05+.9'0 b V= 3630x RD x R x A Post V=3628-27*9.67-+.627.7. Designed By: Date: V (Post) = BMD 10/25/2008 0.82 0.05 6964 of Min. Treatment Vol(Post -Pre)= 6964 cf Treatment Vol in Ac-in 1.92 ac-in Step 2: Determine Surface Area- Min. K) Infiltration Rate (in/hr) 3.4 (1) Intended Days to Infiltrate (days)) 2 a. A — V = A=5232/(2-(6.69'2)) IMin SA of Basin = 512.1 sf 2*(K*T) Step 3. Determine Dimensions Storage Elevation 14.70 Flow Splitter- Inlet Elevation Elevation 13.70 Flow Splitter - Bypass Flow Outlet Jitter - Outlet to Basin Elev. 14.20 Too of Berm Elevation Storage Depth Surface Area Required (Avg of Top and Bottom SA) Top Width ® Storage Elev 65 Top Length ® Storage Bottom Width 59 Bottom Length 4. Calculation of Volumetric Flow Rate of Infitration and Drawdown I from infiltration: 'O is actually the Uarelan How Hale Q=A.(K). Conversion=cfs ExampleCalculafiof of Q: SurfaceArea=3184sf (K)=2.42 inl hr 3184sf 2.42in I ft Ihr=0.I8cfs hr 12in 3600s )rawdnwn Time for Trentment Vnlumn Drawdown Time for Dosi n Vol Volume cf O Hours Days 7015 0.51 3.8 0.16 1.00 6964 Target Area 7000 at 116.0 Surface Area Storage = 7540 sf 110.0 Surface Area Bottom = 6490 sf 1Avg Surface Area = 7( sf Volume of Basin De th'SA = 7015 of ExampleCalculatiat: Q=0.18cfs V=3184cf V = T ;. 3184fr' Is' Ihr = 2.Ihrs=.049days Q 1 0.18 ft 3600s Area (sf) (K) in/hr D (infiltration) = 0.51 oft; 6490 3.4 Post *f4bSt. Reach on Llnk . Infiltration Basin B Drainage Diagram for 106132 M200 Basin B- Pre Prepared by Earth Tech 10/27/2008 HydroCAD® 8.00 s/n 003562 © 2006 HydroCAD,S6ftware,Solution OCT 3 0 2008 106132 M200 Basin B- Pre Type/1/ 24-hr Rainfall=3.70" Prepared by Earth Tech Page 2 HydroCAD@ 8.00 s/n 003562 @ 2006 HydroCAD Software Solutions LLC 10/27/2008 Pond 2P: Infiltration Basin B Inflow Area = 1.562 ac, Inflow Depth > 2.63" Inflow = 5.21 cis @ 12.05 hrs, Volume= 0.343 of Outflow = 0.51 cfs @ 11.58 hrs, Volume= 0.343 af, Atten= 90%, Lag= 0.0 min Discarded = 0.51 cfs @ 11.58 hrs, Volume= 0.343 of Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 of Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs Peak Elev= 14.45' @ 12.79 hrs Surf.Area= 0 sf Storage= 5,247 cf Plug -Flow detention time= 76.6 min calculated for 0.343 of (100% of inflow) Center -of -Mass det. time= 76.4 min ( 875.0 - 798.6 ) Volume Invert Avail.Storage Storage Description #1 13.70' 7,015 cf Custom Stage Data Listed below Elevation Cum.Store (feet) (cubic -feet) 13.70 0 14.70 7,015 Device Routing Invert Outlet Devices #1 Discarded 0.00' 0.51 cfs Exfiltration at all elevations #2 Secondary 14.70' 4.0' long x 0.5' breadth Broad -Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 Coef. (English) 2.80 2.92 3.08 3.30 3.32 Discarded OutFlow Max=0.51 cfs @ 11.58 hrs HW=13.71' (Free Discharge) L1=Exfiltration (Exfiltration Controls 0.51 cfs) $econdary OutFlow Max=0.00 cfs @ 0.00 hrs HW=13.70' (Free Discharge) 2=Broad-Crested Rectangular Weir( Controls 0.00 cfs) OCT 3 0 Z008 106132 M200 Basin B- Pre Type 111 24-hr Rainfall=3.70" Prepared by Earth Tech Page 3 HydroCADO 8.00 s/n 003562 © 2006 HydroCAD Software Solutions LLC 10/27/2008 Peak Elev--14.45' -Storage—�5,247-cf-------------------- ;j -------------------- 11*72 j r//ram' /iiiiiiii� 0 2 4 6 8 10 12 14 16 18 20 22 24 Time (hours) ® Inflow Q Outflow ® Discarded ❑■ Secondary OCT 3 0 2008 i 106132 M200 Basin B- Pre Type /// 24-hr Rainfall=3.70" Prepared by Earth Tech Page 4 HydroCADB 8.00 s/n 003562 © 2006 HydroCAD Software Solutions LLC 10/27/2008 Hydrograph for Pond 2P: Infiltration Basin B Time ours) Inflow (cfs) Storage (cubic -feet) Elevation (feet) Outflow (cfs) Discarded (cfs) Secondary (cfs) 0.00 0.00 0 13.70 0.00 0.00 0.00 0.50 0.00 0 13.70 0.00 0.00 0.00 1.00 0.00 0 13.70 0.00 0.00 0.00 1.50 0.00 0 13.70 0.00 0.00 0.00 2.00 0.00 0 13.70 0.00 0.00 0.00 2.50 0.00 0 13.70 0.00 0.00 0.00 3.00 0.00 0 13.70 0.00 0.00 0.00 3.50 0.00 0 13.70 0.00 0.00 0.00 4.00 0.00 0 13.70 0.00 0.00 0.00 4.50 0.00 0 13.70 0.00 0.00 0.00 5.00 0.00 0 13.70 0.00 0.00 0.00 5.50 0.00 0 13.70 0.00 0.00 0.00 6.00 0.01 1 13.70 0.01 0.01 0.00 6.50 0.01 2 13.70 0.01 0.01 0.00 7.00 0.02 3 13.70 0.02 0.02 0.00 7.50 0.03 4 13.70 0.03 0.03 0.00 8.00 0.04 6 13.70 0.04 0.04 0.00 8.50 0.06 8 13.70 0.06 0.06 0.00 9.00 0.08 11 13.70 0.08 0.08 0.00 9.50 0.11 15 13.70 0.11 0.11 0.00 10.00 0.14 19 13.70 0.14 0.14 0.00 10.50 0.20 26 13.70 0.19 0.19 0.00 11.00 0.26 35 13.70 0.25 0.25 0.00 11.50 0.45 60 13.71 0.44 0.44 0.00 12.00 3.92 1,643 13.93 0.51 0.51 0.00 12.50 0.86 5,149 14.43 0.51 0.51 0.00 13.00 0.41 5,211 14.44 0.51 0.51 0.00 13.50 0.33 4,947 14.41 0.51 0.51 0.00 14.00 0.27 4,570 14.35 0.51 0.51 0.00 14.50 0.24 4,103 14.28 0.51 0.51 0.00 15.00 0.21 3,582 14.21 0.51 0.51 0.00 15.50 0.17 3,006 14.13 0.51 0.51 0.00 16.00 0.14 2,375 14.04 0.51 0.51 0.00 16.50 0.13 1,701 13.94 0.51 0.51 0.00 17.00 0.12 1,003 13.84 0.51 0.51 0.00 17.50 0.10 281 13.74 0.51 0.51 0.00 18.00 0.09 12 13.70 0.09 0.09 0.00 18.50 0.08 12 13.70 0.08 0.08 0.00 19.00 0.08 11 13.70 0.08 0.08 0.00 19.50 0.08 10 13.70 0.08 0.08 0.00 20.00 0.07 10 13.70 0.07 0.07 0.00 20.50 0.07 9 13.70 0.07 0.07 0.00 21.00 0.07 9 13.70 0.07 0.07 0.00 21.50 0.06 9 13.70 0.06 0.06 0.00 22.00 0.06 8 13.70 0.06 0.06 0.00 22.50 0.06 8 13.70 0.06 0.06 0.00 23.00 0.05 7 13.70 0.05 0.05 0.00 23.50 0.05 7 13.70 0.05 0.05 0.00 24.00 0.05 6 13.70 0.05 0.05 0.00 OCT 3 0 2008 --- 106132 M200 Basin B- Pre Type 1/124-hr Rainfall=3.70" Prepared by Earth Tech Page 5 HydroCADO 8.00 s/n 003562 © 2006 HydroCAD Software Solutions LLC 10/27/2008 Stage -Discharge for Pond 2P: Infiltration Basin B Elevation Discharge Discarded Secondary (feet) (cfs) (cfs) (cfs) 13.70 0.00 0.00 0.06 13.71 0.51 0.51 0.00 13.72 0.51 0.51 0.00 13.73 0.51 0.51 0.00 13.74 0.51 0.51 0.00 13.75 0.51 0.51 0.00 13.76 0.51 0.51 0.00 13.77 0.51 0.51 0.00 13.78 0.51 0.51 0.00 13.79 0.51 0.51 0.00 13.80 0.51 0.51 0.00 13.81 0.51 0.51 0.00 13.82 0.51 0.51 0.00 13.83 0.51 0.51 0.00 13.84 0.51 0.51 0.00 13.85 0.51 0.51 0.00 13.86 0.51 0.51 0.00 13.87 0.51 0.51 0.00 13.88 0.51 0.51 0.00 13.89 0.51 0.51 0.00 13.90 0.51 0.51 0.00 13.91 0.51 0.51 0.00 13.92 0.51 0.51 0.00 13.93 0.51 0.51 0.00 13.94 0.51 0.51 0.00 13.95 0.51 0.51 0.00 13.96 0.51 0.51 0.00 13.97 0.51 0.51 0.00 13.98 0.51 0.51 0.00 13.99 0.51 0.51 0.00 14.00 0.51 0.51 0.00 14.01 0.51 0.51 0.00 14.02 0.51 0.51 0.00 14.03 0.51 0.51 0.00 14.04 0.51 0.51 0.00 14.05 0.51 0.51 0.00 14.06 0.51 0.51 0.00 14.07 0.51 0.51 0.00 14.08 0.51 0.51 0.00 14.09 0.51 0.51 0.00 14.10 0.51 0.51 0.00 14.11 0.51 0.51 0.00 14.12 0.51 0.51 0.00 14.13 0.51 0.51 0.00 14.14 0.51 0.51 0.00 14.15 0.51 0.51 0.00 14.16 0.51 0.51 0.00 14.17 0.51 0.51 0.00 14.18 0.51 0.51 0.00 14.19 0.51 0.51 0.00 14.20 0.51 0.51 0.00 14.21 0.51 0.51 0.00 14.22 0.51 0.51 0.00 Elevation Discharge Discarded Secondary (feet) (cfs) (cfs) (cfs) 14.23 0.51 0.51 0.00 14.24 0.51 0.51 0.00 14.25 0.51 0.51 0.00 14.26 0.51 0.51 0.00 14.27 0.51 0.51 0.00 14.28 0.51 0.51 0.00 14.29 0.51 0.51 0.00 14.30 0.51 0.51 0.00 14.31 0.51 0.51 0.00 14.32 0.51 0.51 0.00 14.33 0.51 0.51 0.00 14.34 0.51 0.51 0.00 14.35 0.51 0.51 0.00 14.36 0.51 0.51 0.00 14.37 0.51 0.51 0.00 14.38 0.51 0.51 0.00 14.39 0.51 0.51 0.00 14.40 0.51 0.51 0.00 14.41 0.51 0.51 0.00 14.42 0.51 0.51 0.00 14.43 0.51 0.51 0.00 14.44 0.51 0.51 0.00 14.45 0.51 0.51 0.00 14.46 0.51 0.51 0.00 14.47 0.51 0.51 0.00 14.48 0.51 0.51 0.00 14.49 0.51 0.51 0.00 14.50 0.51 0.51 0.00 14.51 0.51 0.51 0.00 14.52 0.51 0.51 0.00 14.53 0.51 0.51 0.00 14.54 0.51 0.51 0.00 14.55 0.51 0.51 0.00 14.56 0.51 0.51 0.00 14.57 0.51 0.51 0.00 14.58 0.51 0.51 0.00 14.59 0.51 0.51 0.00 14.60 0.51 0.51 0.00 14.61 0.51 0.51 0.00 14.62 0.51 0.51 0.00 14.63 0.51 0.51 0.00 14.64 0.51 0.51 0.00 14.65 0.51 0.51 0.00 14.66 0.51 0.51 0.00 14.67 0.51 0.51 0.00 14.68 0.51 0.51 0.00 14.69 0.51 0.51 0.00 14.70 0.51 0.51 0.00 J V% ui OCT S 0 ZW SOIL & SITE EVALUATION - STORMWATER BASINS 200 Area Camp Johnson Camp LeJeune Jacksonville, North Carolina TCG Job # 7354 Prepared For: Mr. Brian Dick, PH Earth Tech I AECOM 701 Corporate Center Drive, Suite 475 Raleigh, NC 27607 Prepared By: ` The• Cafeno �Grqup The Catena Group, Inc. 410-B Millstone Drive Hillsborough, NC 27278 Tel (919) 732-1300 Fax (919) 732-1303 September 29, 2008 INTRODUCTION The Marine Corps Base at Camp Lejeune plans an expansion at the 200 Area of Camp Johnson. As part of this expansion, several stormwater infiltration basins are being considered to infiltrate runoff from adjacent impervious surfaces. As part of the application process, a soils investigation detailing soil type, infiltration rate, and depth to seasonal high water table is required. The Catena Group, Inc (TCG) has been retained to perform the soil investigations. INVESTIGATION METHODOLOGY Prior to the field investigation, the Onslow County Soil Survey was referenced to get an overview of the possible soil series located in the study area. Around the site, there are three mapped units (Table 1). Figure 1 presents the mapped soil series and the general locations of the proposed infiltration basins where soil borings and infiltration tests were performed. Table I - Soil Series, Map Unit Symbol, and Taxonomic Class Map Unit Symbol Soil Series/Map Unit Name Taxonomic Class BaB Ba meade Thermic Arenic Ha ludults BmB Ba meade —Urban land Complex NoA, NoB Norfolk Thermic Typic Kandiudults The field investigation was performed on September 10 and 12, 2008. Soil borings were made with a hand -turned auger in the vicinity of the proposed infiltration basins. Observations of the landscape (slope, drainage patterns, past use, etc.) as well as soil properties (depth, texture, structure, seasonal wetness, restrictive horizons, etc.) to a depth > 60 inches, when possible, were recorded. Soil color was determined with a Munsell Soil Color Chart. The rate of water entry into a soil is referred to as the infiltration rate. The infiltration rate into o soil decreases with time mainly due to an increase in the soil water content and a decrease in the hydraulic gradient. As infiltration continues, the rate of water entry into the soil reaches a constant value (steady state condition), which is considered to be the same as the saturated hydraulic conductivity (KSAT) of the soil. The KSAT was measured in the field and used to characterize the infiltration rate for the proposed infiltration basin. KSAT measurements were performed at the proposed infiltration basin using a constant -head permeameter (Amoozemeter). Before any readings were recorded, the Amoozemeter was allowed to equilibrate, typically 20 minutes. Based on conversations with the designer of the proposed infiltration basins, construction of the basin would remove approximately 6 inches of topsoil. As such, the KSAT measurements were performed around a depth of 12 inches in order to estimate the infiltration rate at the new soil surface. 1 ti- ar iII p0� 3 0 2008 RESULTS Soil Type All of the soil was in a natural state and with fairly similar horizons except for Site 5, which had been cut and filled and was not suitable for an infiltration basin. Site 5 was subsequently re- located and is noted as Site 5A. Table 2 presents each boring with a soil series determination. Determination of soil series was made through a comparison of soil boring descriptions to the Natural Resources Conservation Service (NRCS) Official Series Description (OSD) for the soil series that were mapped by the NRCS for this site. Depth to Seasonal High Water Table The depth to the seasonal high water table (SHWT) was noted at each boring based on redoximorphic features, the presence of saturated soil, and best professional judgment. Table 2 - Soil Series Determination and Depth to SHWT Boring # Soil Series Determination SHWT Determination inches below surface 1 Baymeade 53 2/3* Baymeade 37 3/4** Norfolk 40 5 Disturbed 6 5 B Baymeade 42 6/7*** Baymeade 42 8 Baymeade 34 9 Norfolk 32 10 Norfolk 33 * Site location represents both basins 2 and 3 ** Site location represents both basins 3 and 4 *** Site location represents both basins 6 and 7 Infiltration Rate Saturated hydraulic conductivity tests were performed at each of the proposed infiltration basin sites and the results for each test are shown below in Table 3. Since soil is inherently non - homogeneous, field tests can often misrepresent the aerial hydraulic conductivity of a soil. In particular, field tests underestimate the saturated hydraulic conductivity of clayey soil and overestimate it in sandy soils. As a result of this misrepresentation, a "moderation factor" is suggested to convert point saturated hydraulic conductivity to aerial saturated hydraulic conductivity for each proposed infiltration basin. Since the soil is typically fine sand or loamy sand, a moderation factor of 0.75 was used to correct for the potential of overestimating the infiltration rate. Table 5 presents the saturated hydraulic conductivity geometric mean for each infiltration basin as well as a moderation factor to get an area infiltration rate for each proposed infiltration basin. OCT 3 0 2008 Table 3 - Results of Saturated Hydraulic Conductivity Tests and Geometric Mean Soil Type Test Location Test Depth (in) Measured KSAT (in/hr) Geometric Mean (in/hr) 75% Geometric Mean in/hr Ba meade 2/3 12 3.2 3.54 2.65 Ba meade 7 12 3.4 Ba meade 8 12 4.0 Ba meade 10 12.5 3.6 Norfolk 3/4 12 3.6 2.61 1.95 Norfolk 1 9 12 1.2 Norfolk 1 10 12 4.1 As shown in Table 3, the proposed basin has an infiltration rate of 1.93 inch/hour, which is greater than the required minimum of 0.52 inch/hour. CONCLUSIONS The findings presented herein represent TCG's professional opinion based on our site and soils evaluation. This report is provided to assist in the application for the infiltration basin by providing the soil information. North Carolina DWQ must issue the final permit. Any concurrence with the findings in this report would be made at that time. 1 OCR 3 0 2008 The 200 Area, Camp Johnson Catena Proposed Infiltration Basins Group Onslow County, North Carolina o 1ie Figure October 2008 A5 Shown � Jab No.. ob N 7754 Re: request for additional info: SW Project No. 081007 - M200 Area ... Subject: Re: request for additional info: SW Project No. 081007 - M200 Area Parking From: Christine Nelson <Christine.Nelson@ncmai1.net> Date: Mon, 17 Nov 2008 14:04:51 -0500 To: "Dick, Bryan" <Bryan.Dick@aecom.com> Bryan, An extension until the 25th is ok with me. Christine Dick, Bryan wrote: Christine, We will address the comments tomorrow and send the response via fedex as soon as I get a check in hand. I could have the responses to you by 11/20, but will need till 11/25 to have the check in your hands. It is hard for me to get a check within a few days... So, I would like to extend the deadline to 11/25 and will send everything at once. Thanks in advance and please let me know if extending the deadline is a problem. Bryan Please note email address is changed Bryan M. Dick, PH Project Manager EARTH TECH I AECOM 701 Corporate Center Drive Suite 475 Raleigh NO 27607 (919) 854-6200 - voice (919)' 854-6259 - Fax www.earthtech.aecom.com bryan.dick@aecom.com -----Original Message ----- From: Christine Nelson[mailto:Christine.Nelson@ncmail.net) Sent: Friday, November 14, 2008 3:46 PM To: carl.h.baker@usmc.mil; Dick, Bryan Cc: David Towler; Janet Russell Subject: request for additional info: SW Project No. 081007 - M200 Area Parking Gentlemen, I have attached a pdf version of my request for additional information for Stormwater Project SW8 081007 - USMCB Camp Johnson - M200. I will also send copies via mail. Please let me know if you have any questions. Thanks! Christine Express Stormwater Permitting NC-DENR I of 1 11/17/2008 2:05 PM s Michael F. Easley, Governor i PWilliam G. Ross Jr., Secretary r North Carolina Department of Environment and Natural Resources 1 Y Coleen H. Sullins Director Division of Water Quality November 14, 2008 Commanding Officer, c/o Carl Baker, Deputy Public Works Officer USMCB Camp Lejeune Bldg1005 Michael Road Camp Lejeune, NC 25847 Subject: Request for Additional Information Stormwater Project No. SW8 081007 USMCB Camp Johnson - M200 Area Parking Onslow County Dear Mr. Baker: The Wilmington Regional Office received a State Stormwater Management Permit Application for USMCB Camp Johnson - M200 Area Parking on October 30, 2008. A preliminary review of that information has determined that the following information is needed to continue the stormwater review: 1. The infiltration supplement for drainage area A lists the basin bottom elevation at 14.4 fmsl and the storage elevation at 12.0 fmsl. The storage surface area for the infiltration basin is listed as 15.4 ft2. Please verify the supplement has been completed correctly. 2. Please verify the provided storage volume listed on the infiltration basin supplement for drainage area A is consistent with the calculations. It appears that there may be a typo on the supplement. 3. The elevation of the infiltration basin berm for drainage area B identified on page C-8 of the plans is listed as 15.5 ft, which is inconsistent with the other documentation. Please verify. 4. Please provide calculations that have been signed, sealed, and dated. 5. Please demonstrate where the runoff from Hoover Road is directed. If the offsite drainage from Hoover Road be collected in the western collection swale for infiltration basin A, please include it in the drainage area. 6. Please submit a $500 fee for the additional review required for this application. Please keep in mind that changing one number may change other numbers and require the calculations, supplements, and other supporting documentation to be updated. Verify all numbers are correct to ensure consistency in the application documents. Please note that this request for additional information is in response to a preliminary review. The requested information should be received in this Office by November 20, 2008, or the application will be returned as incomplete. The return of a project will necessitate resubmittal of all required items, including the application fee. The construction of any impervious surfaces, other than a construction entrance approved Sedimentation Erosion Control Plan, is a violation of NCGS 143-215.1 to enforcement action pursuant to NCGS 143-215.6A. under an and is subjgct NprihCarolina NalAW1111 North Carolina Division of Water Quality 127 Cardinal Drive lixtension Wilmington, NC 28405 Phone (910) 796-7215 Customer Service Wilmington Regional Office Internet: www.ncwatergralitvorg Fax (910)350-2004 1-877-623-6748 An Equal Opportunity/Affirmative Action Employer — 50% Recycled110% Post Consumer Paper 1 Carl Baker November 14, 2008 Stormwater Application No. SW8 081007 Please reference the State assigned project number on all correspondence. If you have any questions concerning this matter please feel free to call me at (910) 796-7323 or email me at christine.nelson@ncmail.net. Sincerely, �.YvIJ �U,,., � Christine Nelson Environmental Engineer ENB/can: S:\WQS\STORMWATERWDDINFO\2008\081007.nov08 cc: Bryan Dick, Earth Tech Christine Nelson .Wilmington Regional Office, Page 2 of 2 requ4for additional info: SW Project No. 081007 - M200 Area Parking f Subject: request for additional inf6—SW Project No_08 :007_M200=Area'Parkingn From: Christine Nelson <Christine.Nelson@ncmai1.net> Date: Fri, 14 Nov 2008 15:46:25 -0500 To: carl.h.baker@usmc.mil, Bryan Dick <bryan.dick@earthtech.com> CC: David "fowler <david.towler a usmc.mil>, Janet Russell <Janet.Russell@ncmai1.net> Gentlemen, I have attached a pdf version of my request for additional information for Stormwater Project SW8 081007 - USMCB Camp Johnson - M200. I will also send copies via mail. Please let me know if you have any questions. Thanks! Christine Express Stormwater Permitting NC-DENR 081007.nov08.pdf Content -Type: application/pdf Content -Encoding: base64 I of 1 11/14/2008 3:46 PM RE: 200 Area Subject: RE: 200 Area From: "Towler CIV David W" <david.towler@usmc.mil> Date: "rue, 14 Oct 2008 12:10:15 -0400 To: "Janet Russell" <Janet.Russel I@ncmai1.net>, <bryan.dick@earthtech.com> October 27 is good for me, see you then. V/r, David. -----Original Message ----- From: Janet Russell[mailto:Janet.Russell@ncmail.net] Sent: Tuesday, October 14, 2008 10:33 To: bryan.dick@earthtech.com; Towler CIV David W Subject: 200 Area October 14, 2008 *200 Area - Camp Johnson* Gentlemen: The Express stormwater submittal meeting has been scheduled with *Christine Nelson on October 27, 2008 at 2:00 PM* here in the Wilmington Regional Office. The applicant is required to attend the meeting or send a representative. Please review the submittal requirements, attached. Note that plans should be submitted folded to fit our file system, 9" x 19". * Vince Lewis' site visit analysis for the seasonal high water table is on file. Please respond within 2 business days to confirm and reserve the meeting date/time. Thanks, Janet Russell Express Coordinator I of 1 10/15/2008 8:39 AM RE: Express for 200 Area Subject: RE: Express for 200 Area From: "Dick, Bryan" <Bryan.Dick@aecom.com> Date: 'rue, 14 Oct 2008 12:01:30 -0400 To: "Janet Russell" <Janet.Russel l@ncmai1.net> Sorry for the delay Janet. I had to leave for a death in the family and did not receive the emails until you had already set the meeting. It looks like you worked it out, but I do apologize for my delay. There are 2 basins (infiltration) and it looks like you have located Mr. Lewis's site visit form. I only needed stormwater review... Let me know if you need anything else and I look forward to seeing you in two weeks. Bryan Please note email address is changed Bryan M. Dick, PH Project Manager EARTH TECH I AECOM 701 Corporate Center Drive Suite 475 Raleigh NC 27607 (919) 859-6200 - voice (919) 859-6259 - Fax www.earthtech.aecom.com dick@aecom.com -----Original Message ----- From: Janet Russell(mailto:Janet.Russell@ncmail.net) Sent: Monday, October 13, 2008 4:47 PM To: Dick, Bryan Subject: Express for 200 Area Bryan, I am in receipt of the Express Request for the 200 Area at Camp Lejeune. Are you wanting a submittal meeting for Stormwater? Any other agency? Please clarify whether you propose 2 or 3 infiltration basins. Also, clarify whether Vincent made the site visit to verify the seasonal high water table. Thanks, Janet 1 of 1 10/15/2008 8:38 AM RE: 200 Area Subject: RE: 200 Area From: "Dick, Bryan" <Bryan.Dick@aecom.com> Date: Tue, 14 Oct 2008 11:34:54 -0400 'ro: "Janet Russell" <Janet.Russel I@ncmai1.net>, "Towler GS05 David W" <david.towler@usmc.mil> CC: "Dean, Neil" <NEIL.DEAN@aecom.com>, "Jenkins, Bill" <BiILJenkins@aecom.com> We are confirmed for Earth Tech's involvement. Please note email address is changed Bryan M. Dick, PH Project Manager EARTH TECH I AECOM 701 Corporate Center Drive Suite 475 Raleigh NC 27607 (919) 854-6200 - voice (919) 854-6259 - Fax www.earthtech.aecom.com bryan.dick@aecom.com -----Original Message ----- From: Janet Russell[mailto:Janet.Russell@ncmail.net] Sent: Tuesday, October 14, 2008 10:33 AM To: Dick, Bryan; Towler GS05 David W Subject: 200 Area October 14, 2008 *200 Area - Camp Johnson* Gentlemen: The Express stormwater submittal meeting has been scheduled with *Christine Nelson on October 27, 2008 at 2:00 PM* here in the Wilmington Regional Office. The applicant .is required to attend the meeting or send a representative. Please review the submittal requirements, attached. Note that plans should be submitted folded to, fit our file system, 9" x 14". * Vince Lewis' site visit analysis for the seasonal high water table is on file. Please respond within 2 business days to confirm and reserve the meeting date/time. Thanks, Janet Russell Express Coordinator 1 of 1 10/14/2008 11:43 AM about:blank October 14, 2008 200 Area Gentlemen: The Express stormwater submittal meeting has been scheduled with Christine Nelson on October 27, 2008 at 2:00 PM here in the Wilmington Regional Office. The applicant is required to attend the meeting or send a representative. Please review the submittal requirements, attached. Note. that plans should be submitted folded to fit our file system, 9" x 14". * Vince Lewis' site visit analysis for the seasonal high water table is on tile. Please respond within 2 business days to confirm and reserve the meeting date/time. Thanks, Janet Russell Express Coordinator I of 1 10/14/2008 10:32 AM aboutblank Bryan, I am in receipt of the Express Request for the 200 Area at Camp Lejeune. Are you wanting a submittal meeting for Stormwater? Any other agency? Please clarify whether you propose 2 or 3 infiltration basins. Also, clarify whether Vincent made the site visit to verify the seasonal high water table. Thanks, Janet I of 1 10/13/2008 4:47 PM jo't�s �o P�� �cl cd sW80y/00-2 _ For DENR Use ONLY North Carolina Department of Environment and Reviewer: Natural Resources Submit 10-a-7 Request for Express Permit Review Time: 2: oO NCDENR Confirm l0' t—C 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(a)ncmail.net • Fayetteville or Raleigh Region -David Lee 919.791.4203; david.lee(a)ncmail.net • Mooresville & -Patrick Grogan 704-663-3772 or patrick.grogan(@,ncmail.net • Washington Region -Lyn Hardison 252-946-,9215 or Iyn.hardison(a).ncmail.net • Wilmington Region -Janet Russell 910-350.2004 or janet✓ussell(dncmail.net NOTE: Project application received after 12 noon will be stamped in the following work day. Project Name: 200 AREA County: ONSLOW Applicant: CART BAKER, DEPUTY PUBLIC WORKS OFFICER Company: MCB CAMP LEJEUNE Address: BLDG 1005 MICHAEL RD. City: MCB CAMP LEJEUNE, State: NC Zip:-285472521 Phone:910-451-2213 Fax: Email: carl.h.baker(a.usmc.mil Project is Drains into SC, NSW waters Project Located in WHITE OAK River Basin (, E C E I V E Engineer/Consultant: Bryan M. Dick Company: Earth Tech D Address: 701 COPORATE CENTER DR. City: RALEIGH, State: NC Zip: 27607 OCT 13 2008 Phone:919-854-6252 Fax::919-854-6259 Email:bryan.dick@,gmail.com (Check all that apply) PROJ # DWQ ❑ 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 ❑ Off -site [SW (Provide permit #)] ❑ High Density -Detention Pond —# Treatment Systems ® High Density -Infiltration 3 #Treatment Systems, ❑ High Density -Bio-Retention _ # Treatment Systems ❑ High 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 _ acres to be disturbed.(CK # (for 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 # 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 SUBMITTAL DATES Fee I I SUBMITTAL DATES Fee CAMA $1 Variance ❑ Ma'; ❑ Min $ SIN ❑ HD, ❑ LID, ❑ Gen $ 401: $ LQS $ Stream Deter,_ $ Project Name_: Area 200 — Camp Johnson Stormwater Express Questionnaire (10/9/2007) What is the applicant's full legal name? CARL BAKER. _ Is the applicant associated with a Sole proprietor ® Corporation ❑ LLC Partnership Federal Govt. If it's an LLC, is it ❑ Manager -managed or ❑ Member -managed? OWhat is the applicant's title within the Corp., LLC or Partnership? DEPUTY PUBLIC WORKS OFFICER Will an agent (someone other than the applicant) be signing the application? ❑ Yes ®No If Yes, what is the agent's name and title? OPlease note the application signature requirements are listed in NCAC 2H.1003 (e). In summary, only the sole proprietor of a sole proprietorship, the designated manager, member - manager, president or vice president of a corporation or LLC, the general partner of a partnership, or a ranking official of a municipality may sign permit applications and supplements. The signature of the engineer or other agent can be accepted only if accompanied by a signed letter of authorization from one of the aforementioned individuals. Corporations, LLC's and Partnerships must be registered with the NC Secretary of State's Office, and be active. Please note that spelling, capitalization, and punctuation are extremely important. Please provide the entity name exactly as on file with the NC Secretary of State. 2 Project Location: County _Onslow Nearest Town/City_Jacksonville (Attach a detailed vicinity map with both local street names and SR, NC, US or Interstate highway numbers, plus other relevant information such as town or city names, directions to, etc. Show the nearest intersection of two major roads on the vicinity map. A major road is any 1, 2 or 3 digit NC, US or interstate highway.) If the project is located in Brunswick, Onslow, or New Hanover Counties, or a small portion of northern Pender County, NPDES Phase II Post -Construction rules will apply, unless a vested development right, as described in the Session Law, can be demonstrated, which is dated prior to July 1, 2007. 3. Receiving stream name New River River Basin _White Oak What is the classification of the receiving stream? SC, NSW For SA or SR waters, a separate scaled topographic map will be required. The project must be accurately located on the map and the % mile radius from the property corner closest to the SA or SR receiving stream must be drawn on the map. If you claim that the project is not within mile of SA or SR waters, you must conduct a series of chlorides tests to demonstrate that the chlorides level at a point in the receiving stream that is at least % mile from the project is less than 500 ppm. Samples must be sent to a State certified lab for testing. W 4. If the project is high density, what type of stormwater management BMP's are being � p j g y, yp g g proposed? c (check all that apply) N Wet Detention Infiltration Trench Infiltration Basin Sand Filter ul o Bio-retention Wetlands Alternative e Offsite Dry Detention NPDES Phase II Other to ° How many separate BMP's are being proposed? 2 a 5. Is there offsite runoff from the adjacent properties or public right-of-way that will drain into any of the proposed BMP's on the project and is not being diverted? Yes ® No ❑ N/A 6. Is a road across other property required to access the project? ❑ Yes ® No ❑ N/A 7. Is there any existing development or pre-1988 existing BUA located on the property? El (Please document, delineate and identify on the plans.) ® Yes No ❑ N/A Page 1, of 3 Revised 10/9/2007 Project Name_: Area 200 — Camp Johnson 8. Will the high density project collect all of the proposed BUA? ® Yes ❑ No ❑ N/A (If not, attach a separate explanation sheet) 9. Will the project involve the subdivision and sale of property? ❑ Yes ® No ❑ N/A Is the subdivision ❑ residential or ❑ commercial? How many lots are proposed? _NA (Deed restrictions are required for all residential, commercial, low density or high density sub- divisions. Specific language for the various types of subdivisions is available from DENR.) 10. Will the plans show all delineated wetlands? ® Yes ❑ No ❑ N/A (All projects require either a signed wetlands delineation map or a wetlands report to be submitted with the application. Only a trained professional may provide information regarding the presence or absence of wetlands.) 11. Are wet detention ponds or other engineered controls proposed to be locatedad'acent wetlands? El Yes u No ® N/A (If, yes, a physical means to prevent the dewatering of the wetland must be provided, or the SHWT must be provided to demonstrate that the permanent pool of the BMP is above the SHWT and will not dewater the wetlands over time. Where possible, all BMP's and swales should outlet into back the wetland (with level spreaders). 12. For infiltration projects, a site visit must be completed with the DENR soils scientist to verify the soil type, water table and infiltration rate provided in the soils report. What is/was the scheduled site visit date?_Sept 10, 2008 (Include a copy of the consultant's soil report with the application.) 13. Level Spreaders are required at the outlet of all engineered controls and swales prior to entering surface waters or wetlands. Will the plans reflect level spreaders? ® Yes ❑ No ❑ N/A (The purpose of the level spreader is to reduce the energy of the incoming runoff and to promote diffuse sheet flow to prevent erosion and scour into the receiving waters or wetlands.) r !% 14. Lat s this project A modification to an existing permit IW HA lot that will be treated in an existing, previously permitted BMP? > ais the name of the existing permitted facility? M a tat o What is the permit number of the existing permitted facility? SW8 ca - o , Is the permitted facility in compliance with its permit? Yes No N/A taa Have the deed restrictions been recorded? Yes No N/A a -Have the deed restrictions been submitted? Yes No N/A `_Has the Designer's Certification been submitted? Yes No N/A 15. Do the plans reflect all information in 15A NCAC 2H.1003 (g)? ® Yes ❑ No ❑ N/A 16. Will all of the design requirements for each proposed BMP be met? ® Yes ❑ No ❑ N/A (If not, attach a separate explanation sheet. Please note that the Express program is not set up to handle any type of deviation from the standard design.) 17. For each BMP in all high density projects, and low density curb outlet swale projects, the individual drainage area for each proposed BMP must be clearly delineated. 18. Any revisions made to the application as a result of this review may cause changes to the other documentation. Plans, calculations, application, and supplements should be reviewed for any necessary changes. For example, changing the orifice size will require a modification to the calculations, the pond details on the plans, and page 1 of the supplement. 19. IS THE PROJECT DESIGNED AND THE APPLICATION READY TO SUBMIT? ® Yes ❑ No Page 2 of 3 Revised 10/9/2007 Project Name_: Area 200 — Camp Johnson Complete applications may be accepted earlier if there is a cancellation in our submittal schedule. Page 3 of 3 Revised 10/9/2007 00� Earth Tech DEC 1 0 20 BY EARTH TECH AECOM 701 Corporate Center Drive, Suite 475, Raleigh, orth"Carolina 27607 T 919.854.6200 F 919.854.6259 v .earthtech.aeconnxom October 10, 2008 Bryan M. Dick, EIT, PH 701 Corporate Center Dr. Suite 475 Raleigh, NC 27607 919-854-6252 NC DWQ Attn: Christine Nelson 127 Cardinal Dr. Ext. Wilmington, NC 28405 Re: M200 - USMC Mrs. Nelson, Please find enclosed the updated sheets to address your comments on the M200 project. I addressed them with the following: • The DA should have run down the center of the road and I moved the delineated DA to match the one that I used for calculations. Impervious area was actually already correctly based on the half road width. • Hydrocad runs have been updated • C8 table has been amended Also, I corrected the DA and associated cells in the Basin A, Level Spreader Supplement to reflect the correct area. It still had the old area also.. Please give me a call if you have any questions or comments. 864-506-1465 Thank you for your help, Bryan M. Dick, PH EARTH TECH I AECOM Earth Tech 701 Corporate Center Drive, Suite 475, Raleigh, North Carolina 27607 T 919.854.6200 F 919.854,6259 w .earthtech.aecornxom October 10, 2008 NOV 2 5 2008 Bryan M. Dick, EIT, PH 701 Corporate Center Dr. Suite 475 Raleigh, NC 27607 919-854-6252 NC DWO Attn: Christine Nelson 127 Cardinal Dr. Ext. Wilmington, NC 28405 Re: USMC — M200 Response to RFI Mrs. Nelson, Please find enclosed an updated set of plans and application for the M200 site. I have addressed your comments with the following: 1). Basin A supplement had a typo and was revised. Note, comment 5 resulted in amendments to Basin A by increase of storage elevation by 0.05'. 2). Volume has been revised for Basin A 3). Sheet c-8 has been corrected 4). Comment has been addressed 5). The runoff from Hoover Rd. that was contributing to the drainage basin for A has been added to the DA on the plans. The calculations were amended to account for approximately 3200 sf additional impervious. The main application was also revised. 6). A $500.00 check is enclosed. Please give me a call if you have any questions or comments. 864-506-1465 Thank you in advance, / Bryan M. Dick, PH DIVISION OF WATER QUALITY INFILTRATION SYSTEM INVESTIGATION Complete and email this form to Vincent.Lewis@ncinail.net. If there are more than 7 areas to be tested, attach a second sheer. Scheduled Site Visit Date: Sept 10,08 Time: 10:00 Project Name: USMC Leleune — 200 Area _ County:Onslow_ Street Address: —Camp Johnson, Wilson Rd Directions from the nearest intersection of two major roads: _Through Camp Johnson Gate (Montford Landing Rd), turn rt onto Wison Rd, at Stop sign, project on right. >1 acre being disturbed? ❑YES ®NO CAMA Major required? ❑YES ❑NO Consultant Name: Bryan Dick Phone: 919-854-6252 Consultant Firm Name: EARTH TECH Bore Number 1 2 3 4 5 6 7 a Existing Ground Elevation 14.2 14.0 13.5 13.0 12.0 14.0 b Proposed Bottom Elevation 14.6 14 13.5 13.0 12.0 13.5 c) Difference (a minus b) -.4 0 0 0 0 .5 d Add 2 ft. (Min. Bore Depth) 2.4 2.0 2.0 2.0 2.0 2.5 e Hardpan Depth? f Infiltration Rate OK? Approx. Elev. Of SHWT 0'6 " 30 i 1 X h Max. lowest bottom elev. Comm Ma Required Attachments: 1. Legible vicinity map. 2. Complete Soils Report. 3. PDF formatted site plan with the boring locations to be tested. Site plans should be emailed or hand -delivered only. Illegible faxed maps will not be accepted. All proposed infiltration areas and existing, active utility lines located within the proposed basin/trench must be marked and flagged. If these areas are not flagged, the Soils Scientist reserves the right to decline to do the investigation. If the proposed infiltration system will b'e located in an area of existing pavement and there is no open area nearby, equipment capable of breaking through the impervious layer must be provided. The soils investigation does not take the place of a soils report prepared by an appropriate professional. The Soils Scientist will only verify the soil conditions that are reported in the Soils Report, and make a determination as to the suitability of the site to meet the infiltration design requirements under NCAC 2H.1000, and assumes no liability should the system fail. Stormwater Management Plan Prepared For: MCB Camp Lejeune Area 200 Date: 10-8-08 Earth Tech I AECOM 701 Corporate Center Dr., Suite 475 Raleigh, NC 27607 919-854-6200 Prepared By: Bryan M. Dick, EIT, PH (�E C E I V Ef1 ��Jnus OCT 13 2008 U DWO PROJ # Project Description This document is to serve as a stormwater management plan for the MCB Camp Lejeune —Camp Johnson Area 200 project. The project consists of the addition 2 POV parking areas to the existing, developed site. The completed project will provide for expansion of base facilities to accommodate additional staff in the coming year. Contact Information Earth Tech, Inc. Attn: Bryan M. Dick, PH 701 Corporate Center Dr., Suite 475 Raleigh, NC 27607 Telephone: 919-854-6252 Fax: 919-854-6259 Identify Project Involvement This project is a part of the White Oak River Basin, and is currently not subject to any buffer rules. The site is approximately 1,000 feet from the New River approximately 2.5 miles from the Camp Johnson Gate. The proposed project stormwater plan will meet the requirements of retaining the runoff volume the 1.5 inch rainfall event per the requirements by the State as referenced from the DWQ Stormwater Manual, July 2007. Two infiltration basins are used to two drainage areas and level spreaders treats the bypass flow at each basin. This project is not within 0.5 miles of SA waters and infiltration devices are not required by DWQ. The treatment volume provided as well as the use of swales and adequate infiltration capacity will provide a post development peak flow rate that is less than the pre - development condition, per the July 2007 start date for meeting Phase II requirements. Hydrocad models bases on TR-55 methods were used to validate the complete capture of the runoff for the 1.5" Type III — 24 Hr. storm. The bypass devices are designed to distribute the 10 year storm at a non -erosive velocity. Stormwater Design Parameters The infiltration basins are based on the following parameters or objectives: Provide 85% TSS removal Protect the value of the receiving water resource • 1.5 rainfall for basin storage sizing R ECEIVED OCT 13 2008 DWO PROJ # • The 1 yr rainfall for outlet structure and routing design to maintain a post development peak flow that is less than pre -development peak flow • Ratio of impervious surface to the total area of the drainage area • Exceed a minimum of 2.0' clearance from the seasonal high water table • Rainfall exceeding the design storm will bypass the basins and flow through a minimum of 50' long vegetated filter • Level spreader has non -erosive velocity on the 10 year event Discussion of Treatment Measures The proposed treatment is to use two infiltration basins to meet the TSS and Peak Flow requirements set forth by DWQ. The soils of the project site are appropriate soils for infiltration and the seasonal high water table at the site will allow construction of the basins with at least a 2' of clearance. Bypass devices are provided to allow any runoff volume that exceeds the design storage volume to be routed to a level spreader with a vegetated filter strip. The level spreader length is designed to handle the 10 yr peak runoff rate, so no bypass of the filter is necessary. Phase II requirements are met by using a grassed swale to collect sheet flow from the impervious areas and by the infiltration and storage volume provided in each basin. Conclusion This Stormwater Management Plan represents an environmentally sensitive and effective plan for utilizing the proposed stormwater treatments to accommodate the increased runoff of the proposed site development. R ECEIVED OCT 13 2008 DWQ PROJ # _ o< I In LEI MEN ffm MENVICINITY MAP - CAMP LEJEUNE, N.C. INDEX OF SHEETS woglow MAN SHEET NO. DESCRIPTION G1 TITLESHEETANDINDEX G2 EXISTINGCONDITIONS G3 sNEOVE mm F1 PARpNO AREAA-STTEPUN PA NEE Fi PARXNGAREAB-SNEPLAN F3 PA UGAREAA-GIWXNG,DRAVIAGE AND EROSION COMOL Ca PARNWGAREAB-GPADING,ORASIAGE. AND EROSION COMOL Cb BITE DETAILS CB EROSION CONTROL NOTES FT EROSION CONTROL DETAILS Ca INFILTRATIONBASINANDFLOW SPUTTER DETAILS 11 TOTAL SHEETS 0 LOCATION MAP - J. S. MARINE CORPS BASE - CAMP LEJEUNE, N.C. MONTFORD POINT c E E EARTH TECHIAECOM , ;;,.,-"" G_1 I 1 MARINE CORPS BASE MARINE CORPS BASE, r, T 1 3 2008 CAMP LEJELINE, NORTH CAROLINA U200 AREA PARKING DWa P'-'OJ . �- ;�p' ••�A n BDDB7� �.o..fi�000i288 uu- y1p 00018 �v I1 r r ----------- rose 9esu9P�cPn F— com..". r .^ _EARTH TECH AE 'l/'. '%; -r hORRCtWC PS BASE A lll� ��� —.1. M200AREAPARIONG /g, J DWQ �ep� x I I ez J4 EIVED I' E C II �1TITfIIIII TF y 91PI ro, r, 1 . ♦ 3 2�0$ i. i T NOTE: ALL RADII ARE 7 C;Y U III.) r � "'�` UNLESS OTHERWISE NOTED DNS I I r y � it III -- mi — u \-----[WUOCE RJPO �_���II uwrcmu.+.wruucmumsc.o I — i I nMmnrv�,�,anw v® EARTH TECH AECOM MARINE CORPS BASE \ �m� M2 G 00 AREA vwmo 60002291 pm.. E C E IV E OCT 13 2008 DWQ PROJ # wrvr a`mAw�a STREET W 1 L� NOTES FOR ELECTRI^ LINER O aTIOR 1. REMOVE TWO EXISTING POLES IN PROPOSED. PARKING LOT. 2. REUSE EXISTING CONDUCTOR. SPLICE IN NEW CONDUCTOR AS NEEDED OR AS DIRECTED BY THE CONTRACTING OFFICER 3. CONTRACTOR MUST FURNISH AND INSTALL ALL MISCELLANEOUS ITEMS REQUIRED FOR A COMPLETE RELOCATION. NOTE: ALL RADII ARE 3' n IBWURIROCR6611@R WI CD 13 2008 uu DWQ E Ipp - - - - - -- - - - - ILI! EARTH TECH AECOM C-3 MARINECORPSBASE M .RR R. M200 AREA PARKING�.-, -P 6=2D3 0-=== NHalf Moon r� i CAM 5 2� 7Li Proje i. Bay Piney",Green 'w �ml BG �O PO O GlF �2 � I of 0 w� t BIRCH a Camp Lejeune MC Base PROJECT SITE Legend 0 05 2mile. EARII I I LCN Vicinity Map — PAVED Area M200 Parking UNPAVED Camp Lejeune Marine Corps Base Onslow County, NC 4 � � m �V