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SW8960329_HISTORICAL FILE_20180806
STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO. SW8 °Ili 032::1 DOC TYPE ❑ CURRENT PERMIT ❑ APPROVED PLANS © HISTORICAL FILE ❑ COMPLIANCE EVALUATION INSPECTION DOC DATE 2okgor6O� YYYYMMDD ROY COOPER Governor MICHAEL S. REGAN Secretary Energy, Min era I& WILLIAM E. (TOBY) VINSON, JR. Land Resources Interim Director ENVIRONMENTAL QUALITY August 6, 2018 ivIC13 Camp Lejeune Attn: Commanding Officer c/o Teal Paul, Deputy Public Works Officer 1005 Michael Road Camp Lejeune, NC 28542 Subject: State Stormwater Management Permit No. SWS 960329 Camp Lejeune Naval Itospital, Parking Lot Addition, and Medical Clinic High Density Wet Detention fond and Infiltration Project Onslow Count° Dear Mr. Paul: The Wilmington Regional Office received a complete, modified Stormwater Management Permit Application for the subject project on August 6, 2018. 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 (1995 Rules) as amended by Session Law 2008-21 1 and as subsequently amended on January 1, 2017 (2017 Rules), as applicable. We are forwarding modified Permit No. SN8 960329 dated August 6, 2018 for the construction, operation and maintenance of the stormwater control measures (SCN4s), built -upon areas, as well as the stormwater collection systent and/or vegetated conveyance system associated with the subject project. Please add the attached plans to the previously approved plan set. Please replace the previous application (SWU-101), the Wet Pond Supplement for the West Pond in Drainage Area II, and an updated Operation and Maintenance (0&11) Agreement for the West Pond with the attached modified versions. This permit shall be effective from the date of issuance until February 20, 2022 and shall be subject to the conditions and limitations as specified therein, and does not supersede any other agency permit that may be required. Please pay special attention to the permit conditions regarding the operation and maintenance of the SCMs, stormwater collection system, and/or vegetated conveyances; the limitation of built -upon area; modification of the project; the procedures for changing ownership of and/or transferring the permit; and the need to renew the permit. Please also pay attention to the permit conditions that requires the recordation of deed restrictions and protective covenants, easements, and the maintenance agreement, which must all be provided along with certification upon completion of the project. Failure to comply with these requirements will result in future compliance problems. Please refer to Attachment 1 for a detailed description of the current proposed major modification and a list of all the past modifications approved during the effective period of this permit. If any parts, requirements, or limitations contained in this permit are unacceptable, you have the right to request an adjudicatory hearing by filing a written petition with the Office of Administrative I-learings (OA171). The written petition must conform to Chapter 150B of the North Carolina General Statutes, and must be filed with the OAH within thirty (30) days of receipt of this permit. You should contact the OAH with all questions regarding the filing fee (if a filing fee is required) and/or the details of the filing process at 6714 Mail Service Center, Raleigh, NC 27699-6714, or via telephone at 919-431-3000, or visit their website atwww.NCOAH.coin. Unless such demands are made this permit shall be final and binding. Stale of Nan It Carolina I Lnvironmental Quality I Energy.tiincialand Land Resources Wilmingtun Rc91ona1 Ofrwt 1127 Cardinal Dilec Exvsision I Wihninglon, NC 28405 0107967215 State Stormwater Permit No. SW8 960329 Page 2 of 2 If you have any questions regarding this permit, please do not hesitate to contact Christine Hall at (910) 796-721S. Since elv_ . y\rilliarn (Toby) Vinson, Jr:, PE, CPESC, CPM, Interim Director Division of Energy, Mineral and Land Resources Enclosures: Attachment A — Certification Forms Attachment I — Permitting History GDS/ cash: \\\Stormwater\Permits & Projects\] 996\960329 HD\2018 08 permit 960329 cc: J. Kevin Avolis, PE, Avolis Engineering tW ilrnii4 ton Regional Office Stormwater File, Slatrol MOO Carolina I KtmbownmtaI Qua] it p I Energy. Mincial and Land Rcsourccs l4iiminglun Regional0flicc 1127Caidinsl0rire E%1cus1on I Wilminyton,NC 2MOS 910 790 7215 State Stormwater Management Systems Permit No. SW8 960329 STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENTAL QUALITY DIVISION OF ENERGY, MINERAL AND LAND RESOURCES STATE STORMWATER MANAGEMENT PERMIT HIGH DENSITY DEVELOPMENT In accordance with the provisions of Article 21 of Chapter 143, General Statutes of North Carolina as amended; and other applicable Laws; Rules, and Regulations PERMISSION IS HEREBY GRANTED TO US Marine Corps Base, Camp Lejeune Camp Lejeune Naval Hospital, Parking Lot Addition, and Medical Center Building NH 100, Stone St, Camp Lejeune, Onslow County FOR THE construction, operation and maintenance of eight (8) wet detention ponds, one (1) infiltration basin, and one (1) area of redevelopment in compliance with the provisions of 15A NCAC 2H .1000 (1995 rules) as amended by Session Law (SL) 2008-211 and as subsequently amended on January 1, 2017 (2017 Rules) (the "stormwaterrules'� and the approved stormwater management plans and specifications and other supporting data as attached and on file with and approved by the Division of Energy, Mineral and Land Resources (the "Division" or "DEMLR") and considered an enforceable part of this permit. This permit shall be effective from the date of issuance until February 20, 2022, 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 Sections 1.10 and 1.11 of this permit. The stormwater controls and drainage areas have been identified as follows and have been designed to handle the following amounts of build -upon area (BUA). Drainage Area # I Basim# J SCM Type BUA s A Basin A Wet Pond 68;668 B I Basin B Wet Pond 183.793 1 C I Basin C I Wet Pond 77.011 D Basin D I Wet Pond 38,410 E Basin E Wet Pond 23;668 F I Basin E i Infiltration Basin f 14,683 1 G I East Pond 1 Wet Pond 60,039 1 H West Pond Wet Pond 54,743 I Untreated 27,450 J I J I Wet Pond 1 230,673 2017 Redevelopment I Exemption 52,718 1 Page 1 of 7 State Stormwater Management Systems Permit No. SW8 960329 3. The drainage area for Pond J includes 35,304 square feet of drainage area and the associated impervious area from a part of the low density project area previously permitted under the Base Entry Point and Road permit (SW8 090630) that could not be routed around the collection system. The permit for SW8 090630 appears to have been modified on May 29, 2012 to include the additional built -upon area. Since this area is covered under both this permit, SW8 960329, and SW8 090630 any future improvements within the affected area will impact both permits. 4. The drainage area labeled "2017 Redevelopment" is exempted from State Stormwater permitting requirements under the following conditions: a. The project must be constructed as shown on the plans submitted to this Office; b. The total proposed built -upon area of 52.718 square feet does not exceed the existing built -upon area of 52,718 square feet; and, c. The proposed stormwater control, sheet flow over vegetated areas; provides equal protection of surface waters as the existing stormwater control; which is sheet flow over vegetated areas. 5. The additional infiltration areas shown on the plans have not been demonstrated to meet State Stormwater BMP design requirements and therefore is not considered a part of the approved state stormwater treatment system. These additional measures are incorporated only by reference and are not enforceable parts of the permit. 6. A 50 foot wide vegetative buffer must be provided adjacent impounded structures, streams, rivers and tidal waters. 7. The wet detention ponds and infiltration basin do not require a vegetated filter strip. 8. The tract and drainage areas will be limited to the amount of impervious area indicated on the application and in Sections 1,2. 1.10, and 1.11 of this permit, and per approved plans. The built -upon area for future development within the drainage areas labeled J and "2017 Redevelopment" is limited to 10,000 and 5,730 square feet, respectively. Within the other drainage areas, there is no impervious area allocated for the future development. 9. The runoff from all impervious areas within the permitted drainage areas of this project must be directed into the permitted stormwater control system within drainage areas labeled East (or G), West (or H), A, B, C, D, E, F, and J. Page 2 of 7 State Stormwater Management Systems Permit No. SW8 960329 10, The following design criteria have been provided in the wet detention ponds and must be maintained at design condition: Pond East (G) West (H) A g C D E J Applicable Rules / SCM Design: 1995 Rules 2017 Rules S� 2008-211 a. Drainage area. acres 2,40 2.14 2.97 7,48 4,00 1.43 1,46 10.83 Onsite, ft2: 104,544 93;342 129,312 325,700 174,326 62;409 63,600 436,560 Offsite, 111: none none none none none none none 35,304 b. Impervious Surface: 60,039 54,743 68,668 183,793 77,011 38,410 23,668 230,673 Onsile, fill: 60,039 54,743 68,668 183,793 77,011 38,410 23,668 195;369 Offsile,ft : none None none none none none none 35 304 c. (Avg) Pond Depth, ft. 3 3 3 4 3 3 3 I 4.5 d. TSS removal eff: 90% n/a 90% 90% 90% 90% 90% 90% e. Design Storm, inches: 1 1.5 1.5 1.5 1.5 1.5 1.5 1.5 f. Permanent Pool El. 97,2 14,13 9.5 8.5 22.5 22.5 16.5 19.5 g. Tot al Permanent Pool lurface Area (forebay + ain), ft': 7,400 6,683 8,653 23,580 16,232 5,888 3,941 19.487 h. Total Permanent Pool Volume (forebay + main), ft3: n/a 19,602 17,890 78,898 37,265 9,180 7,123 79,017 h.Permitted Storage Volume at TP: ft3 5,897 7,828 8,586 25,149 12,982 4,897 3,734 38,538 i. Storage Elevation, TP 97.90 15.1 10.35 9.45 23.20 23.20 17.25 21.18 j. Controlling Orifice 3.75"0 1.5" 0 1.5"0 YO 2"0 1.25'0 VO 2.75"0 k. Pre-dev, 1 yr-24 hr discharge rate: cis:� n/a n/a 2.59 13.58 2.88 2.35 3.99 0.25 I. Orifice flow rate, cfs: n/a n/a 0.03 0,12 0.04 0,02 0,01 0.15 m. Forebay Volume. ft3 1 n/a 3,040 I 3,289 15,967 6,891 I 1,799 1,432 I 15,627 n. Maximum Fountain Horsepower: n/a n/a n/a 1/4 HP 1/8 HP n/a n/a 1/4 HP o. Receiving Stream/River Basin Northeast Creek /While Oak p. Stream Index No. 19-16-3.5 q. Classification SC,NSW,HOW Page 3 of 7 State Stormwater Management Systems Permit No. SW8 960329 11. The following design criteria have been provided in the infiltration basin treating Drainage Area F and must be maintained at design condition: Designed under: 2017 Rules a. Drainage Area, acres: Onsite. ftz: Offsite. ft2: 0.7 30,279 0 b. 'Total Impervious Surfaces, ft2: Onsite, ft2: Offsite, ft2: 14,683 14,683 0 1c. Design Storm, inches: 1.5 d. Basin Depth, feet: 2 e. Bottom Elevation, FMSL: 15.00 f. Bottom Surface Area, ft2: 2.644 Bypass Weir Elevation. FMSL: 16.35 h. Permitted Storage Volume, fR 4,142 i. Type of Soil: Find Sand lj. Expected Infiltration Rate, in/hr: 2.2 �k. Seasonal High Water Table, FMSL: 13.00 I. Time to Draw Down, hours: 7.4 m. Receiving Stream/River Basin: Northeast Creek / White Oak n. Stream Index Number: 19-16-3.5 l o. Classification of Water Body: 'SC,NSW,HQW" 12. The peak flow from the 10-year storm event shall not cause erosion downslope of the SCMs treating Drainage Area F and H (West Pond). 13. Pretreatment devices have been provided for the infiltration basin treating Drainage Area F to prevent clogging. This project uses vegetated sheet flow. 14. When using a wet pond for irrigation, it is recommended that some water be maintained in the permanent pool, the vegetated shelf is planted with appropriate species that can handle fluctuating conditions, and human health issues are addressed. 15. The SCM landscape planting plan shown in the approved plans shall be followed in its entirety during construction. After the plants are established, the operation and maintenance agreement must be followed. 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. 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. Infiltration BMP's that are used as Erosion Control devices shall be inspected and cleaned out on a more frequent basis during construction. Page 4 of 7 State Stormwater Management Systems Permit No SW8 960329 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 structures; orifice devices: flow spreaders, infiltration media, 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 the Division. The records will indicate the date, activity, name of person performing the work and what actions were taken. The facilities shall be constructed in accordance with the conditions of this permit, the approved plans and specifications, and other supporting data. Within Ponds East (or G), A. B, C; D, E, and J, 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 foot 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 identified in this permit Section 1.10. Ponds with less than 30,000 cubic feet of permanent pool volume may not have a fountain. Within the West Pond, decorative spray fountains will be allowed in the stormwater treatment system if documentation is provided demonstrating that the proposed fountain will not cause resuspension of sediment within the pond or cause erosion of the pond side slopes. 8. The permittee is responsible for verifying that the proposed built -upon area for the entire project does not exceed the maximum allowed by this permit. 9. Upon completion of the project, the permittee shall determine whether or not the project is in compliance with the permitted plans and take the necessary following actions: a. If the permittee determines that the project is in compliance with the permitted plans, then within 45 days of completion; the permittee shall submit to the Division one hard copy and one electronic copy of the following: i. The completed and signed Designer's Certification provided in Attachment A noting any deviations from the approved plans and specifications. Deviations may require approval from the Division; ii. A copy of the recorded maintenance agreement: iii. Unless already provided; a copy of the recorded deed restrictions and protective covenants, and iv. A copy of the recorded plat delineating the public rights -of -way, dedicated common areas and/or permanent recorded easements, when applicable. b. If the permittee determines that the project is not in compliance with the permitted plans, the permittee shall submit an application to modify the permit within 30 days of completion of the project or provide a plan of action. with a timeline: to bring the site into compliance. Page 5 of 7 State Stormwater Management Systems Permit No. SW8 960329 10. 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. Access to the stormwater facilities for inspection and maintenance shall be maintained via appropriate recorded easements at all times. 11. No person or entity, including the permittee; shall alter any component shown in the approved plans and specifications. Prior to the construction of any modification to the approved plans, the permittee shall submit to the Director; and shall have received approval for modified plans, specifications; and calculations including, but not limited to, those listed below: a. Any modification to the approved plans and specifications, regardless of size including the stormwater control measures, built -upon area, details, etc. b. Redesign or addition to the approved amount of built -upon area or to the drainage area. c. Further development: subdivision, acquisition; lease or sale of any, all or part of the project area as reported in the approved plans and specifications. d. Altering; modifying; removing, relocating, redirecting, regrading or resizing of any component of the approved stormwater control measure: stormwater collection system and/or vegetative conveyance system shown on the approved plan. e. The construction of any allocated future BUA. f. The construction of any permeable pavement for BUA credit that was not included in the approved plans and specifications. g. The construction of any #57 stone area, public trails, or landscaping material to be considered a permeable surface that were not included in the approved plans and specifications. h. Other modifications as determined by the Director. 12. Prior to transfer of the permit, the stormwater facilities will be inspected by Division personnel. The project and the stormwater facility must be in substantial compliance with all permit conditions. Any items not in substantial compliance must be repaired, replaced or restored to design condition prior to the transfer. Records of maintenance activities performed to date will be required. 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 Any individual or entity found to be in noncompliance with the provisions of a stormwater management permit or the Stormwater rules is subject to enforcement procedures as set forth in NCGS 143 Article 21. 2. This permit is not transferable to any person or entity except after notice to and approval by the Director. The permittee shall submit a completed and signed Name/Ownership Change Form, accompanied by the supporting documentation as listed on the form, to the Division of Energy, Mineral and Land Resources at least 60 days prior to any one or more of the following events: a. Any ownership change including: i. The sale or conveyance of the project area in whole or in part, except in the case of an individual lot sale that is made subject to the recorded deed restrictions and protective covenants; ii. Dissolution of the partnership or corporate entity, subject to NCGS 57D-2- 01(e) and NCGS 57D-6-07; b. Bankruptcy; c. Foreclosure, subject to the requirements of Session Law 2013-121, d. A name change of the current permittee; e. A name change of the project; f. A mailing address change of the permittee; Page 6 of 7 State Stormwater Management Systems Permit No. SW8 960329 3. 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 conveyance of common area to a third party constitutes an approved transfer of the stormwater permit. 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. If the facilities fail to perform satisfactorily; the permittee shall take immediate corrective actions. This includes actions required by this Division and the stormwater rules such as the construction of additional or replacement on -site stormwater systems. These additional or replacement measures shall receive a permit from the Division prior to construction. 6. The permittee grants Division 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 the permittee files a request with the Division for a permit modification; transfer, renewal, or rescission; however, these actions do not stay any permit conditions. 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 to the extent necessary to maintain compliance with stormwater regulations. A copy of the approved plans and specifications shall be maintained on file by the Permittee at all times. 10. The issuance of this permit does not prohibit the Director from reopening and modifying the permit, revoking and reissuing the permit, or, terminating the permit as allowed,by the laws, rules and regulations contained in Session Law 2006-246, Title 15A NCAC 2H.1000, and NCGS 143-215.1 et. al. 11. A permit renewal request must be submitted at least 180 days prior to the expiration date of this permit. The renewal request must include the appropriate application; documentation and the processing fee as outlined in Title 15A NCAC 02H.1045(3). Permit modified; updated and re -issued this the 6t' day of August 2018. H CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION s,Williaml. (Toby) Vingt�1-, Jr.. PE, CPESC. CPM, Interim Director Division of Energy, Mineral and Land Resources By Authority of the Environmental Management Commission Page 7 of 7 State Stormwater Management Systems Permit No, SW8 960329 Attachment A Certification Forms The following blank Designer Certification forms are included and specific for this project: • As -Built Permittee Certification — West Pond treating Drainage Area H • As -Built Designer's Certification General MDC — West Pond treating Drainage Area H • As -Built Designers Certification for Wet Detention Pond Project — West Pond treating Drainage Area H • Designer's. Certification - remaining project area A separate certification is required for each SCM. These blank certification forms may be copied and used, as needed, for each SCM and/or as a partial certification to address a section or phase of the project. Page 1 of 1 State Stormwater Management Systems Permit No. SW8 960329 AS -BUILT PEIRbI1T1'VE CERTIFICATION I hereby state that I am the current permitice for the project named above, and I certify by my signature below, that the project meets the below listed Final Submittal Requirements found in NCAC 0211.1042(4) and the terms_ conditions and provisions listed in the permit documents, plans and specifications on file with or provided to the Division. Check here if this is a partial certification. Sect ion/ph ase/SCM 7 Check here if this is part of a Fast Track As -built Package Submittal. Printed Name County of Signature a ANotary Public in the State of do hereby certify that personally appeared before me this day of 20 and acknowledge the due execution of this as -built certification. (S8A1.,) Witness my hand and official seal My commission expires Permittee's Certification NCAC .1042(4) Completed / Provided N/A A. DEED RESTRICTIONS / BUA RECORDS 1. The deed restrictions and protective covenants have been recorded and contain the necessary language to ensure that the project is maintained consistent with the stormwater regulations and with the permit conditions. Y or N 2 A copy of the recorded deed restrictions and protective covenants has been provided to the Division. Y or N �. Records which track the 13UA on each lot arc being kept. (See Note 1) Y or N B. MAINTENANCE ACCESS 1. The SCMs are accessible for inspection, maintenance and repair. Y or N 2. The access.is a minimum of 10 feet wide. Y or N 3. The access extends to the nearest public right-of-way. Y or N C. EASEMENTS 1. The SCMs and the components of the runoff collection / conveyance system arelocated in recorded drainage casements. Y or N 2. A copy of the recorded plat(s) is provided. Y or N D. SINGLE FAMILY RESIDENTIAL LOTS - Plats for residential lots that have an SCM include the following: Y or N l . The specific location of the SCM on the lot. Y or N 2. A typical detail for the SC%1. Y or N 3. A note that the SCM is required to meet stormwater regulations and that the lot owner is subject to enforcement action as set forth in N.-"CGS 143 Article 21 if the SCM is removed, relocated or altered without prior a royal. Y or N E. OPERATION AND MAINTENANCE AGREEMENT Y or N 1. The O&M Agreement is referenced on the final recorded plat. Y or N 2. The O&M Agreement is recorded with the Register of Deeds and appears in the chain of title. 1' or N F. OPERATION AND MAINTENANCE PLAN — maintenance records are Y or N Page 1 of 8 State Stormwater Management Systems Permit No. SW8 960329 being kept in a known set location for each SCM and are available for review. G. DESIGNER'S CERTIFICATION FORAI — has been provided to the I Y N Division. I or Notel- Acceptable records include ARC approvals, as -built surveys, and county tax records. Provide an explanation for every requirement that was not met, and for every' N/A` below. Attach additional sheets as needed. Page 2 of 8 State Stormwater Management Systems Permit No. SW8 960329 AS-BGII�I DGSIGNEK`S CERTIFICATION GENERAL AIDC I hereby state that 1 am a licensed professional and I certify by my signature and seal below, that 1 have observed the construction of the project named above to the best of my abilities with all due care and diligence; and that the project meets the below listed General MDC found in NCAC 021-1.1050 in accordance with the permit documents, plans and specifications on File with or provided to the Division, except as noted on the "AS -BUILT" drawings; such that the intent of the stormwaier rules and statutes has been preserved. ❑ Check here if this is a partial certification. Section/phase/SCM Check here if this is a part of a Fast -Track As -Built Package Submittal per .1044(3). Check here if the designer did not observe the construction, but is certifying the project. Check here if pictures of the SCN1 are provided. Printed Name NC Registration SFAL: Signature Consultants Mailing Address: City/State/7_I P Phone Numbor Consultant's Email address: D Circle N if the as -built value differs from the Plan. IPN is circled, provide an explanation on Page 2. ON/1-1 = not evaluated (provide explanation on page 2) OO N/A = not applicable to this SCN-1 or project. Consultant's Certification NCAC .1003((3) & General MDC .1050 TA ON/G ON/A A. TREATMENT REQUIREMENTS 1. The SCM achieves runoff treatment. 1' or N 2. The SCM achieves runoff volume match. Y or N 3. Runoff from offsite areas and/or existing BUA is bypassed. Y or N 4. Runoff from offsite areas and/or existing BUA is directed into the permitted SCM and is accounted for at the full build -out potential. Y or N 5. The project controls runoff through an offsite permitted SCM that meets the requirements of the MDC. 6. The net area of new 13UA increase for an existing project has been accounted for at the apprroo riate design storm Ievcl. Y or N Y or N 7. The SCM(s) meets all the specific minimum design criteria. Y or N FMVEGETATED SETBACKS / BUA 1. The width of the vegetated setback has been measured from the normal pool of impounded waters, the MI INN' line of tidal waters, or the top of bank of each side of rivers or streams. Y or N 2. The vegetated setback is maintained in grass or other vegetation. Y or N 3. I3UA that meets the requirements of NCGS 143-214.7 (b2)(2) is located in the setback. Y or N 4. BUA that does not meet the requirements of NCGS 143-214.7 Y or N Page 3 of 8 State Stormwater Management Systems Permit No. SW8 960329 (b2)(2) is located within the setback and is limited to: a. Publicly funded linear projects (road, greenway sidewalk) b. Water -dependent structures c. Minimal footprint uses (utility poles, signs, security lighting and appurtenances) 5. Stormwater that is not treated in an SCM is released at the Y or N edge of the setback and allowed to flow through the setback as dispersed flow. OO As -built ©N/E 03 N/A C. STORMWA"I'ER OUTLETS — the outlet handles the peak flow Y N from the 10 year storm with no downslo e erosion. or D. VARIATIONS 1. A variation (alternative) from the stormwater rule provisions Y N has been implemented. or 2. The variation provides equal or better stonnwater control and Y N equal or better protection of surface waters. or E. COMPLIANCE, WITH OTHER REGULATORY Y N PROGRAMS has been met. or F. SIZING -the volume of the SCM takes the runoff from all surfaces into account and is sufficient to handle the required storm Y or N depth. G. CONTAMINATED SOILS — infiltrating SCM's are not located Y or N in or on areas with contaminated soils. H. SIDE SLOPES l . Vegetated side slopes are no steeper than 3H IV. Y or N 2. Side slopes include retaining walls, gabion walls, or other Y or N surfaces that are steeper than 31 I:1 V. 3. Vegetated side slopes are steeper than 31-1:1 V (provide Y or N ' supporting documents for soils and vegetation). I. EROSION PROTECTION 1. The inlets do not cause erosion in the SCM. Y or N 2. The outlet does not cause erosion downslope of the discharge Y or N point during the peak flow from the 10 year storm. J. EXCESS FLOWS — An overflow / bypass has been provided. Y or N K. DEWATERENG — A method to drawdown standing water has Y or N been provided to facilitate maintenance and inspection. L. CLEANOUT AFTER CONSTRUCTION — the SCM has been Y or N cleaned out and converted to its approved design state. M. MAINTENANCE ACCESS 1. The SCM is accessible for maintenance and repair. Y or N 2. The access does not include lateral or incline slopes >3:1. Y or IN N. DESIGNER QUALIFICATIONS (FAST -TRACK PERMIT) — The designer is licensed under Chapters 89A, 89C, 89E, or 89F of Y or N the General Statutes. Provide an explanation for every MDC that was not met, and for every item marked 'N/A" or WE`; below. Attach additional pages as needed: Page 4 of 8 State Stormwater Management Systems Permit No. SW8 960329 AS-BUII:f DES7CNEWS CERTIFICATION FOR WET DETENTION PON-D PROJECT I hereby state that I am a licensed professional and I certify by my signature and seal below, that I have observed the construction oft lie project named above to the best of my abilities with all due care and diligence, and that the project meets all of the NIDC found in NCAC 021-1.1053, in accordance with the permit documents, plans and specifications on file with or provided to the Division, except as noted on the "AS-RU11 " drawings, such that the intent of the stormwater rules and the general statutes has been preserved. Check here if this is a partial certification. Section/phase/SCN,l r-i`7 Check here if this is part of a Fast -Track As-13uiIt Package Submittal per .1044(3). Check here if the Designer did not observe the construction, but is certifying the project. Check here if pictures of the SCNI are provided. Printed Name NC Registration N SFAL: Consultant's Ntailing Address: City/State/ZIP Phone Number Consultant's Email address: t0 Circle N if the as -built value differs from the Plan/permit. If N. is circled, provide an explanation on page 2 ON -1 = not evaluated (provide explanation on page 2) OO N/A = not applicable to this project or SCNI. This Certification must be completed in conjunction with the General NIDC certification under NCAC 021-1.1050 Consultant's Certification (NIDC .1053) OO As -built ON/E ©N/A A. Forebay / Depths / Fountain l . The available Sediment storage is consistent with the approved Y N plan and is a minimum of 6 in. or 2. Water flow over the Forebay berm into the main pond occurs at a Y or N non -erosive velocity. 3. The provided Forebay Volume is 15%-20% of the main pool } N volume. or 4. The Forebay entrance elevation is deeper than the exit elevation Y N' into the pond. or 5. The Average Design Depth of the main pond below the Y N permanent pool elevation is consistent with the permitted value' or 6. Fountain documentation is provided. Y or N B. Side slopes / Banks / Vegetated Shelf 1. The width of the Vegetated Shelf is consistent with the approved Y N plans and is a minimum of 6 feet. or 2. The slope of the Vegetated Shelf is consistent with the approved Y N tans and is no steeper than 6:1. or C. As -built Main Pool / Areas / Volumes / Elevations 1. The permanent pool surface area provided is consistent with the y N permitted value. or C fhc "fey Pool Volume provided is consistent with the permitted I Y N I� ed value. or Page 5 of 8 State Stormwater Management Systems Permit No. SW8 960329 3. Be permanent pool elevation is consistent with the permitted Y N value. or 4. The temporary pool elevation is consistent with the permitted Y N value. or OAs-built ON/E ON/A D. Inlets / Outlet / Drawdown I . The design volume draws down in 2-5 days. Y or N 2. The size of the Orifice is consistent with the permitted value. Y or N 3. A trash rack is provided on the outlet structure. Y or N 4. 1lydrologic impacts to the receiving channel are minimized from Y N the I yr 24 hr storm discharge? or 5. The inlets and the outlet location are situated per the approved Y N plan and avoid short-circuiting. or E. Vegetation 1. The vegetated shelf has been planted with a minimum of 3 diverse species.2. The vegetated shelf plant density is consistent with the approved HrN plans and is no less than 50 plants per 200 sf or no less than 24 inches on center. Provide an explanation for every MDC that was not met, and for every item marked "N/A" or "N/E" below. Attach additional pages as needed: Page 6 of 8 State Stormwater Management Systems Permit No. SW8 960329 Camp Lejeune Naval Hospital, Parking Lot Addition, and Medical Center Page 1 of 2 Stormwater Permit No. SW8 960329 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 960329 Page 2 of 2 Certification Requirements: 1. The drainage area to the system contains approximately the permitted acreage. 2. The drainage area to the system contains no more than the permitted amount of built -upon area. 3. All the built -upon area associated with the project is graded such that the runoff drains to the system. 4. All roof drains are located such that the runoff is directed into the system. 5. The outlet 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: NCDEQ-DEMLR Regional Office Page 8 of 8 Attachment 1 - Permitting History Camp Lejeune Naval Hospital - Parking Lot Addition and Medical Center Permit No. SW8 960329 Approval RIMS Permit Action Description of the Changes Date Version 7/9/1996 Original Approval 1.0 2 wet ponds 2/20/2008 Renewal 2.0 7/9/2010 Modification 2.1 Adding 5 ponds and 1 infiltraiton basin 12/17/2012 Modification 2.2 Adding Pond J and reducing drainage area (DA) for Pond F Adding a redevelopment DA Cot improvements at the back ofthe hospital. 1/2/2018 Major Modification 2.3 Adding previously constructed but unaccounted for built -upon area (PUA) to DA 1'. Both arc subject to 2017 requirements. West fond - increasing the sire to handle additional DA and 131JA from the parking lot addition. Due to the increased size, the SCM has been designed to 8/6/2018 Major Modification 2.4 meet the 2017 MDC. To simplify permitting, the permittee has chosen to subject - this DA to the 2017 rules and forego vestal rights for the previously permitted portion of this DA. Page 1 of 1 DEMLR USE ONLY Date Received Fee Paid Permit Number /In / 651 03D Applicable Rules: (select all that apply) ❑ Coastal SW -1995 ❑ Coastal SW - 2008 ❑ Ph II - Post Construction ❑ Non -Coastal SW- HQW/ORW Waters ❑ Universal Stormwater Management Plan ❑ Other WQ Mgmt Plan: State of North Carolina Department of Environment and Natural Resources Division of Energy, Mineral and Land Resources STORMWATER MANAGEMENT PERMIT APPLICATION FORM This form may be photocopied for use as an original 1. GENERAL INFORMATION 1. Project Name (subdivision, facility, or establishment name -should be consistent with project name on plans, specifications, letters, operation and maintenance agreements, etc.): Naval Hospital Parking Addition Design Additional Patient Parking Area D, NH100 (Construction Contract No. N40085-18-B-0028) 2. Location of Project (street address): City:MCB Camp Ldeune County:Onslow Zip:28547 3. Directions to project (from nearest major intersection): Project is located in the Naval Hospital complex north of the Brewster Boulevard/Hospital Corps Boulevard intersection. 4. Latitude:34* 43' 09" N Longitude:77° 21' 36" W of the main entrance to the project. II. PERMITINFORMATION: 1. a. Specify whether project is (check one): []New ®Modification ❑ Renewal w/ Modificationt tReneuials u,iih modifications also requires SWU-102 - Renemal Application Form b.If this application is being submitted as the result of a modification to an existing permit, list the existing permit numberSW8 960329 , its issue date (if known) January 2, 2018 , and the status of construction: ❑Not Started ®Partially Completed* ❑ Completed* *provide a designer's certification 2. Specify the type of project (check one): ❑Low Density ®High Density ❑Drains to an Offsite Stormwater System ❑Other 3. If this application is being submitted as the result of a previously returned application or a letter from DEMLR requesting a state stormwater management permit application, list the stormwater project number, if assigned, and the previous name of the project, if different than currently proposed, 4. a. Additional Project Requirements (check applicable blanks; information on required state permits can be obtained by contacting the Customer Service Center at 1-877-623-6748): ❑CAMA Major ®Sedimentation/Erosion Control:1.28 ac of Disturbed Area ❑NPDES Industrial Stormwater ❑404/401 Permit: Proposed Impacts b.If any of these permits have already been acquired please provide the Project Name, Project/Permit Number, issue date and the type of each permit: 5. Is the project located within 5 miles of a public airport? ®No ❑Yes j --- If yes, see S.L. 2012-200, Part VI: httn://nortal.ncdenr.org/webllr/rules-and-regulations � JUL 10 2018 Form SWU-10] Version Oct. 31, 2013 Page 1 of BV: III. CONTACT INFORMATION 1. a. Print Applicant / Signing Official's name and title (specifically the developer, property owner, lessee, designated government official, individual, etc. who owns the project): Applicant/Organization:Commanding Officer - MCB Camp Leieune North Carolina Signing Official & Title:David W Towler, PE - Civil Engineer, Public Works Department b. Contact information for person listed in item la above: Street Address:1005 Michael Road City: Camp Lejeune State: NC Zip: 28547 Mailing Address (if applicable): City: State: Zip: Phone: (910 ) 451-3238 Ext. 3285 Fax: (910 ) 451-2927 c. Please check the appropriate box. The applicant listed above is: ® The property owner (Skip to Contact Information, item 3a) ❑ Lessee* (Attach a copy of the lease agreement and complete Contact Information, item 2a and 2b below) ❑ Purchaser* (Attach a copy of the pending sales agreement and complete Contact Information, item 2a and 2b below) ❑ Developer* (Complete Contact Information, item 2a and 2b below.) 2. a. Print Property Owner's name and title below, if you are the lessee, purchaser or developer. (This is the person who owns the property that the project is located on): Property Owner/Orgar Signing Official & Title: b. Contact information for person listed in item 2a above: Street Address: Zip: Mailing Address (if City: Phone: ( ) Fax: 3. a. (Optional) Print the name and title of another contact such as the project's construction supervisor or other person who can answer questions about the project: Other Contact Person/Organization:David W. Towler, P6 Public Works Division Signing Official & Title:David W. Towler, PE - Civil Engineer, Public Works Department b. Contact information for person listed in item 3a above: Mailing Address:1005 Michael Road City:Camp Leieune Phone: (910 ) 450-5803 EmaL[:david.towler@usmc.mil 4. Local jurisdiction for building permits: State:NC Zip:28547 Fax: (910 ) 451-2927 Point of Contact. Phone #: Form SWU-101 Version Oct. 31, 2013 Page 2 of 6 JUL 10 2018 IV. PROJECT INFORMATION 1. In the space provided below, briefly summarize how the stormwater runoff will be treated. Stormwater runoff will be treated by existing stormwater retention pond (West Basin). 2. a. If claiming vested rights, identify the supporting documents provided and the date they were approved: ❑ Approval of a Site Specific Development Plan or PUD Approval Date: ❑ Valid Building Permit Issued Date: ❑ Other: Date: b.If claiming vested rights, identify the regulation(s) the project has been designed in accordance with: ❑ Coastal SW -1995 ❑ Ph II - Post Construction 3. Stormwater runoff from this project drains to the White Oak River basin. 4. Total Property Area: 37.83 acres 5. Total Coastal Wetlands Area: 0 acres 6. Total Surface Water Area: 0 acres 7. Total Property Area (4) - Total Coastal Wetlands Area (5) - Total Surface Water Area (6) = Total Project Area 4:37.83 acres Total project area shall be calculated to exclude the following: the normal pool of impounded structures, the area between the banks of streams and rivers, the area below the Normal High Water (NW line or Mean High Water (MHW) line, and coastal wetlands landward from the NHW (or MHM line. The resultant project area is used to calculate overall percent built upon area (BUA). Non -coastal wetlands landward of the NHW (or MHYV) line may be included in the total project area. 8. Project percent of impervious area: (Total Impervious Area / Total Project Area) X 100 = 50.37 % 9. How many drainage areas does the project have?1 (For high density, count 1 for each proposed engineered stormwater BMP. For loco density and other projects, use I for the whole property area) 10. Complete the following information for each drainage area identified in Project Information item 9. If there are more than four drainage areas in the project, attach an additional sheet with the information for each area provided in the same format as below. Basin Information Drainage Area A Draina e Area B Draina a Area C Drain e Area D Receiving Stream Name Northeast Creek Northeast Creek Northeast Creek Northeast Creek Stream Class * SC; NSW; HQW SC, NSW; HQW SC; NSW; HQW SC; NSW; HQW Stream Index Number * 19-16-(3.5) 19-16-(3.5) 19-16-(3.5) 19-16-(3.5) Total Drainage Area (so 129,312 325,700 174,326 62,409 On -site Drainage Area (so 129,312 325,700 174,326 62,409 Off -site Drainage Area (sf) 0 0 0 0 Proposed Impervious Area" (so 1 68,668 183,793 77,011 1 38,410 % Impervious Area*' total 53.1% 56.4% 44.2% 1 61.5% Impervious' Surface Area Draina a Area A DrainageAreaB Draina a Area C Drain e Area D On -site Buildings/Lots (sf) 0 58,405 15,699 On -site Streets (so 0 10,314 75,302 13,939 On -site Parking (sf) 61,751 79,462 1,803 On -site Sidewalks (so 6,917 35,612 1,709 6,969 Other on -site (so 0 0 0 0 Future (so 0 0 0 0 Off -site (sf) 0 0 0 0 Existing BUA*** (so 0 0 0 0 Total (sf): 68,668 183,793 77,011 38,410 * Stream Class and Index Number can be determined at: http*ortal.ncdenr.org/webAwq[ps/esu/classifications * Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas, sidewalks, gravel areas, etc., 'Report only that amount of existing BUA that will remain after development. Do not reporty'exn;hng�BUA`t}uif—' a is to be removed and which will be replaced by new BUA. JUL , O 20t8 I� Form SWU-101 Version Oct. 31, 2013 Page 3 of 6 iVi! BY: Basin Information Drainage Area E Drainage Area F East Pond Ex.) G West Pond x.) H Receiving Stream Name Northeast Creek Northeast Creek Northeast Creek Northeast Creek Stream Class * SC; NSW, HQW SC; NSW, HQW SC; NSW, HQW SC; NSW, HQW Stream Index Number * 19-16-(3.5) 19-16- 3.5 19-16- 3.5 19-16- 3.5 Total Drainage Area (sf) 63,600 30,279 104,544 93,342 On -site Drainage Areas 63,600 30,279 104,544 93,342 Off -site Drainage Area (sf) 0 0 0 0 Proposed Impervious Area** (s 23,668 14,683 60,039 54,743 % Impervious Area** total 37.2% 48.5% 57.4% 58.65% Im ervious** Surface Area Drainage Area E Drainage Area F East Pond (Ex.) West Pond Ex. On -site Buildings/Lots M 15,120 4,933 0 0 On -site Streets s 0 7,941 0 0 On -site Parking (sf) 0 1,334 60,039 54,743 On -site Sidewalks (s 8,548 475 0 0 Other on -sites 0 0 0 0 Futures 0 0 0 0 Off -site (sf) 0 0 0 0 Existing BUA*** (sf) 0 0 0 0 Totals 23,668 14,683 60,039 54,743 Basin Information. Untreated Areas I Drainage Area J 2017 Access Road - Exemption Area Receiving Stream Name Northeast Creek Northeast Creek Northeast Creek Stream Class * SC; NSW, HOW SC; NSW, HQW SC; NSW, HQW Stream Index Number * 19-16-(3.5) 19-16-(3.5) 19-16-(3.5 Total Drainage Area (so 73,629 471,864 137,472 On -site Drainage Area (sD 73,629 436,560 137,472 Off -site Drainage Area (sD 0 35,304 0 Impervious Area** (sf) 2377450 230,673 2,73°1/8n %omoprvious Area* total 48. Impervious** Surface Area Drainage Area I Drainage Area J 2017 Access Road - Exem lion Area On -site Buildin s/I.ots (s9 0 41,083 5,500 On -site Streets so 16,263 0 19,088 On -site Parkin (sf) 0 126,004 On -site Sidewalks (so 11,187 16,380 22,400 Other on -site (sf) 0 893 (Dumpster/Mechanical) Future (sf) 0 10,000 5,730 Off -sites 0 35,304 Existing BUA***. (sf) 0 1,009 Totals 27,450 1 230,673 52,718 I , JUL 10 2018 jil BY: 11. How was the off -site impervious area listed above determined? Provide documentation. Field visit and topographic survey. Proiects in Union County: Contact DEMLR Central Office staff to check if the project is located within a Threatened & Endangered Species watershed that may be subject to more stringent stormwater requirements as per 15A NCAC 02B .0600. V. SUPPLEMENT AND O&M FORMS The applicable state stormwater management permit supplement and operation and maintenance (O&M) forms must be submitted for each BMP specified for this project. The latest versions of the forms can be downloaded from httt):/ivortal.ncdenr.ore/web/wa/ws/su/bmD-manual. VI. SUBMITTAL REQUIREMENTS Only complete application packages will be accepted and reviewed by the Division of Energy, Mineral and Land Resources (DEMLR). A complete package includes all of the items listed below. A detailed application instruction sheet and BMP checklists are available from http://Rortal.ncdenr.org/web/wg/ws/su/statesw/forms does. The complete application package should be submitted to the appropriate DEMLR Office. (The appropriate office may be found by locating project on the interactive online map at h!W://lLortal.ncdenr.org/web/wq/ws/su/``map .) Please indicate that the following required information have been provided by initialin¢ in the space provided for each item. All original documents MUST be signed and initialed in blue ink. Download the latest versions for each submitted application package fromhtttp://portal.ncdenr.ora/web/w2/ws/su/statesw/forms does. Irtitials 1. Original and one copy of the Stormwater Management Permit Application Form. 2. Original and one copy of the signed and notarized Deed Restrictions & Protective Covenants Form. (if required as per Part VII below) 3. Original of the applicable Supplement Form(s) (sealed, signed and dated) and O&M agreements) for each BMP. 4. Permit application processing fee of $505 payable to NCDENR. (For an Express review, refer to Rl http://www.envhelp.rg/pages/onestopexpress.html for information on the Express program and the associated fees. Contact the appropriate regional office Express Permit Coordinator for additional information and to schedule the required application meeting.) 5. A detailed narrative (one to two pages) describing the stormwater treatment/ managementfor 44 the project. This is required in addition to the brief summary provided in the Project Information, item 1. 6. A USGS map identifying the site location. If the receiving stream is reported as class SA or the ^ �� receiving stream drains to class SA waters within rh mile of the site boundary, include the rh mile radius on the map. 7. Sealed, signed and dated calculations (one copy). 8. Two sets of plans folded to 8.5" x 14" (sealed, signed, & dated), including: a. Development/Project name. b. Engineer and firm. c. Location map with named streets and NCSR numbers. d. Legend. e. North arrow. f. Scale. g. Revision number and dates. h. Identify all surface waters on the plans by delineating the normal pool elevation of impounded structures, the banks of streams and rivers, the MHW or NHW line of tidal waters, and any coastal wetlands landward of the MHW or NHW lines. • Delineate the vegetated buffer landward from the normal pool elevation of impounded structures, the banks of streams or rivers, and the MHW (or NHW) of tidal waters. i. Dimensioned property/project boundary with bearings & distances. 7 C 7 6 \\00 7:j. Site Layout with all BUA identified and dimensioned. k. Existing contours, proposed contours, spot elevations, finished floor elevations. JULo Zo� I. Details of roads, drainage features, collection systems, and stormwater control measures. 1 ' m. Wetlands delineated, or a note on the plans that none exist. (Must be delineated by a t qualified person. Provide documentation of qualifications and identify the person who 11Y. made the determination on the plans. n. Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations. o. Drainage areas delineated (included in the main set of plans, not as a separate document). Form SWU-101 Version Oct. 31, 2013 Page 4 of 6 p. Vegetated buffers (where required). 9. Copy of any applicable soils report with the associated SHWT elevations (Please identify elevations in addition to depths) as well as a map of the boring locations with the existing elevations and boring logs. Include an 8.5"xll" copy of the NRCS County Soils map with the project area clearly delineated. For projects with infiltration BMPs, the report should also include the soil type, expected infiltration rate, and the method of determining the infiltration rate. (Infiltration Devices submitted to WiRO: Schedule a site visit for DEMLR to verify the SHWT prior to submittal, (910) 796-7378.) �/ 10. A copy of the most current property deed. Deed book: Military Page No: -4�-- 11. For corporations and limited liability corporations (LLC): Provide documentation from the NC U1 tf- Secretary of State or other official documentation, which supports the titles and positions held by the persons listed in Contact Information, item la, 2a, and/or 3a per 15A NCAC 2H.1003(e). The corporation or LLC must be listed as an active corporation in good standing with the NC Secretary of State, otherwise the application will be returned. h!W://www.secretary.state.nc.us/CorRorations/CSearch.aspx VIL DEED RESTRICTIONS AND PROTECTIVE COVENANTS For all subdivisions, outparcels, and future development, the appropriate property restrictions and protective covenants are required to be recorded prior to the sale of any lot. If lot sizes vary significantly or the proposed BUA allocations vary, a table listing each lot number, lot size, and the allowable built -upon area must be provided as an attachment to the completed and notarized deed restriction form. The appropriate deed restrictions and protective covenants forms can be downloaded from ht!p:Hl2ortal.ncdenr.org/web/Ir/state-stormwater- forms does. Download the latest versions for each submittal. In the instances where the applicant is different than the property owner, it is the responsibility of the property owner to sign the deed restrictions and protective covenants form while the applicant is responsible for ensuring that the deed restrictions are recorded. By the notarized signature(s) below, the permit holder(s) certify that the recorded property restrictions and protective covenants for this project, if required, shall include all the items required in the permit and listed on the forms available on the website, that the covenants will be binding on all parties and persons claiming under them, that they will run with the land, that the required covenants cannot be changed or deleted without concurrence from the NC DEMLR, and that they will be recorded prior to the sale of any lot. VIII. CONSULTANT INFORMATION AND AUTHORIZATION Applicant: Complete this section if you wish to designate authority to another individual and/or firm (such as a consulting engineer and/or firm) so that they may provide information on your behalf for this project (such as addressing requests for additional information). Consulting Engineer: 1. Kevin Avolis, PE Consulting Firm: Avolis Engineering, PA Mailing Address:P.O. Box 15564 City:New Bern State:INC Zip:28561 Phone: (252 1 633-0068 Fax: ( 1 Emafl:avolisengineering@embargmafl.com IX. PROPERTY OWNER AUTHORIZATION (if Contact Information, item 2 has been filled out, complete this section) I, (print or type name of person listed in Contact Information, item 2a) , certify that I own the property identified in this permit application, and thus give permission to (print or type name of person listed in Contact Information, item la) with (print or type name of organization listed in Contact Information, item 1a) to develop the project as currently proposed. A copy of the lease agreement or pending property sales contract has been provided with the submittal, which indicates the party responsible for the operation and maintenance of the stormwater system. 7C JUL 10 2013 Form SWU-101 Version Oct. 31, 2013 Page 5 of 6 As the legal property owner I acknowledge, understand, and agree by my signature below, that if my designated agent (entity listed in Contact Information, item 1) dissolves their company and/or cancels or defaults on their lease agreement, or pending sale, responsibility for compliance with the DEMLR Stormwater permit reverts back to me, the property owner. As the property owner, it is my responsibility to notify DEMLR immediately and submit a completed Name/Ownership Change Form within 30 days; otherwise I will be operating a stormwater treatment facility without a valid permit. I understand that the operation of a stormwater treatment facility without a valid permit is a violation of NC General Statue 143-215.1 and may result in appropriate enforcement action including the assessment of civil penalties of up to $25,000 per day, pursuant to NCGS 143-215.6. Signature: Date: 1, a Notary Public for the State of County of do hereby certify that before me this _ day of personally appeared and acknowledge the due execution of the application for a stormwater permit. Witness my hand and official seal, SEAL My commission X. APPLICANT'S CERTIFICATION I, (print or type name of person listed in Contact Information, item 1a) David W. Toler certify that the information included on this permit application form is, to the best of my knowledge, correct and that the project will be constructed in conformance with the approved plans, that the required deed restrictions and protective covenants will be recorded, and that the proposed project complies with the requirements of the applicable stormwater rules under 15A NCAC 2H .1000 and any other applicable state stormwater requirements. Date: ��g/ZalB I, a Notary Public for the State oftyU.7\Q.i1Y&1Ye. .County of N7 do hereby certify thatpersonally appeared before me this day of and ackno ledge the due execution of the application for a stormwater permit. Witness my hand and official seal,C''—�"Y"" it. SA Notary Public Onslow Courtly =My Commission Exp 05/26/2019 SEAL My commission expires Q � 19 � {h JUL 10 2013 r V. Form SW-101 Version Oct. 31, 2013 Page 6 of 6 Hall, Christine From: Avolis Engineering, P.A. <avolisengineering@embargmail.com> Sent: Monday, August 06, 2018 10:34 AM To: Hall, Christine Subject: Re: [External] SW8 960329 - Camp Lejeune Naval Hospital Attachments: nh100 001jpg, nh100 002jpg Good Morning Christine! Please find attached the corrected supplement. Kevin will bring original to tomorrow's Express Meeting for the G483 project. Thanks and have a great day! Beth Simmons Avolis Engineering, PA 252.633.0068 From: Hall, Christine Sent: Thursday, August 02, 2018 12:07 PM To: Avolis Enoineerino, P.A. Subject: RE: [External]_SW8 960329 - Camp Lejeune Naval Hospital I had a chance to look over the revised items received on July 31". There is one small item that needs to be corrected on the supplement - the total BUA on the right hand side still reports the drainage area instead of the proposed BUA. Can you correct this entry and email the updated form to me? Christine Hall Environmental Engineer Division of Energy, Mineral and Land Resources - State Stormwater Program Department of Environmental Quality 910 796 7215 office 910 796 7335 direct christine.hall@ncdenr.gov 127 Cardinal Drive Ext. Wilmington; NC 28405 i %"Nothing Compares_,,_. Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to third parties. Hall, Christine From: Sent: To: Subject: Ok - thanks for the heads up. Hall, Christine Thursday, August 02, 201E 'Avolis Engineering, P.A.' RE: [External] SW8 960329 12:16 PM Camp Lejeune Naval Hospital Christine Hall Environmental Engineer Division of Energy, Mineral and Land Resources - State Stormwater Program Department of Environmental Quality 910 796 7215 office 910 796 7335 direct christine.hall@ncdenr:gov 127 Cardinal Drive Ext. Wilmington, NC 28405 a. -:;`'Nothing Compares- - Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to third parties. From: Avolis Engineering, P.A. [mailto:avolisengineering@embargmail.com] Sent: Thursday, August 02, 2018 12:12 PM To: Hall, Christine <Christine.Hall@ncdenr.gov> Subject: Re: [External] SW8 960329 - Camp Lejeune Naval Hospital Christine: Kevin is out of the office until Monday, I can send it then. Beth Simmons Avolis Engineering, PA 252.633.0068 From: Hall, Christine Sent: Thursday, August 02, 2018 12:07 PM To: Avolis Engineering, P.A. Subject: RE: [External] SW8 960329 - Camp Lejeune Naval Hospital I had a chance to look over the revised items received on July 31'. There is one small item that needs to be corrected on the supplement -the total BUA on the right hand side still reports the drainage area instead of the proposed BUA. Can you correct this entry and email the updated form to me? Christine Hall Environmental Engineer Division of Energy, Mineral and Land Resources — State Stormwaler Program Department of Environmental Quality 910 796 7215 office 910 796 7335 direct christine. ha I I(a) ncden r.gov 127 Cardinal Drive Ext. Wilmington, NC 28405 � C Nothing Compares Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to third parties. From: Avolis Engineering, P.A.[mailto:avolisengineerin8@embargmail.com] Sent: Thursday, August 02, 2018 11:24 AM To: Hall, Christine <Christine.Hall@ncdenr.aov> Subject: Re: [External] SW8 960329 - Camp Lejeune Naval Hospital Thanks for letting us know! Beth Simmons Avolis Engineering, PA 252.633.0068 From: Hall, Christine Sent: Thursday, August 02, 2018 11:19 AM To: Avolis Engineering, P.A. Cc: Weaver, Cameron Subject: RE: [External] SW8 960329 - Camp Lejeune Naval Hospital Found it! The handwritten "Express' designation on the envelope had been covered up by a Fed Ex sticker so the package was in with the incoming regular mail. Christine Hall Environmental Engineer Division of Energy, Mineral and Land Resources — State Stormwaler Program Department of Environmental Quality 910 796 7215 office 910 796 7335 direct christine. hall(a) ncdenr.gov 127 Cardinal Drive Ext. Wilmington, NC 28405 y <- 'Nothing Compares_ 4° Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to third parties. From: Avolis Engineering, P.A.[mailto:avolisengineering@embargmail.com] Sent: Monday, July 30, 2018 9:08 AM To: Hall, Christine <Christine.Hall @ncdenr.gov> Subject: [External] SW8 960329 - Camp Lejeune Naval Hospital Good Morning Christine! Please find attached the following for the above referenced project: Transmittal Letter Supplement EZ Form Revised Drainage Area Map Revised Sheets CG102 and CG103 Hard copies will be sent out today for delivery tomorrow. Thanks and have a great day! Beth Simmons Avolis Engineering, PA 252.633.0068 1 "OLIS ENGINEERING, PA P.O. Box 15564 New Bern, North Carolina 28561 July 30, 2018 Ms. Christine Hall Environmental Engineer NCDENR - Energy, Mineral and Land Resources Wilmington Regional Office 127 Cardinal Drive Extension Wilmington, INC 28405 252.633.0068 License No. C-0706 JUL 3 1 2018 F y RE: Stormwater Project No. SW8 960329 Camp Lejeune Naval Hospital, MCB Camp Lejeune, North Carolina AE Project No. 18006 Dear Christine: Enclosed, please find the following incorporating your comments received on July 20, 2018: • Supplement EZ Form (Original and One Copy) • Revised Drainage Area Map (Two Copies) • Revised Sheets CG102 and CG103 (Two Copies) The following comments are offered for each item addressed in your comments: 1. Supplement EZ Form corrected. b. BUA changed. 2. Rules identified. 3. Sheet CG103 modified appropriately. 4. Flow non -erosive. 5. Sheet CG103 modified appropriately. Weir elevation modified to 13'2". 6. Sheet CG102 modified appropriately. Temporary pool is 15.1'. 7. Supplement EZ Form emailed. Should you have any questions or need any additional information or assistance, please do not hesitate to call. Sincerely, fin Avolis, P.E. President Energy, Mineral & Land Resources ENVIRONMENTAL QUALITY July 20, 2018 MC13 Camp Lejeune Attn: Commanding Officer c/o Neal Paul, Deputy Public Works Officer 1005 Michael Road Camp Lcjcune, NC 28547 Subject: Request for Additional Information Stormwater Project No. SN'8 960329 Camp Lejeune Naval hospital Onslow County Dear Mr. Paul: ROY COOPER Governor MICHAEL S. REGAN Secretary WILLIAM E. (TOBY) VINSON, JR. Interim Director The Wilmington Regional Office received and accepted a modified Express State Stormwater Management Permit Application for the subject project on July 10, 2018. A preliminary in-depth review of that information has determined that the application is not complete and that additional information is needed. To continue the review, please provide the following additional information: 15A NCAC 021-1.1042(2)(a)(iv): Please confirm the amount of built -upon arca/impervious area presented on the following: ,-j a. The right hand side at the top of the supplement. The drainage area was reported as the amount of built -upon area. v15�-Thc drainage area exhibit. The pervious area is listed as 54,743 sf while the impervious area (BUA) is listed as 38,599 sf. ✓2. 15A V'CAC 021-1.1042(3)(b): Under the "Compliance with the Applicable Stormwater Program" section of the supplement, please identify the stormwater program that applies to this project, likelv "2017 Rules. Coastal — Other'. I/3 15A NCAC 0211.1053(5)(b): The third and fourth item 45 under the Wet Pond MDC section of the supplement indicate that the forebay entrance and exit will be 2.63 inches. Please demonstrate that the forebay entrance is deeper than the forebay exit. / 15A NCAC 0211.1053(5)(c): The fifth item 45 under the Wet Pond MDC section of the supplement indicates that the flow over the forebay will be erosive. Please demonstrate that the water flowing over or through the structure that separates the forebay from the main pool shall flow at a noncrosive velocity. 15A NCAC 021-1.1053(5) and Chapter A-5 of the NC Design Manual: The forebay, section of Chapter A-5 recommends that the forebay weir can be set as low as (but not to exceed) 1 foot. Plan sheet CG301 indicates that the forebay weir will be set at an elevation of 13.0 ft while the permanent pool elevation is 14.13 ft. Please reconsider the elevation of the weir. If is still desired to keep the weir at an elevation of 13.0, please provide justification for this variation per 15A CAC 0211.1003(6). t/ 6. 15A NCAC 0211.1053(7): Plan sheet CG 102 identifies the temporary pool elevation as being 15.0' while the other application documents indicate this elevation is 15.1'. Please confirm the information is presented consistently. 7. 15A NCAC 021-1.1042(2): Please email the revised supplement form to the email address provided below so that it can be preserved electronically per the regulatory requirements. State of Non Carolina I Environmental Quality I Energy. Mineral and Land Resources Wilmington Regional Office 1127Cardinal Diivc Extension I Wilminglon,NC 28405 910 796 7215 State Stormwater Permit No. S\V8 960329 Page 2 of 2 S. Duc to the relatively minor nature of these comments, the express additional information review fee has been waived. Please remember to confirm that any revised information is presented consistently throughout the application documents including calculations, supplements, narrative, and plans. Please also remember to provide two hard copies of any updated documents per 15A NCAC 021I.1042(2). The requested information should be received in this Office prior to .July 30, 2018, or the application will be returned as incomplete. If the project is returned and you wish to re -submit to the Express program, you will need to reschedule the project through the Express Coordinator for the next available review date and will need to resubmit all required items at that time, including the application fee. If additional time is needed to submit the requested information, please email your extension request, prior to the original due date, to the Division at the email address provided below. The extension request must include a justification and a date of when the requested information will be submitted to the Division, which shall be no lalcr than 5 business days past the original due data Please remember that extension requests delay the issuance of the final permit. The construction of any impervious surfaces, other than a construction entrance under an approved Sedimentation Erosion Control plan, is a violation of NCGS-143-215.1 and is subject to enforcement action pursuant to NCGS 143-215.6A. Please label all packages and cover letters as "Express" and 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) 796-7215 or email me at christine.hall@ncdenr.gov. Sincerely, �fctfC Christine Hall Environmental Engineer GDS/canh: %Stormwater\Permits & Projects\1996\960329 I ID\2018 07 addinfo 960329 ce: J. Kevin Avolis, P8; Avolis Engineering, PA; via email Wilmington Regional Office Stormwater File State of North Carolina I Environmental Quality I Energy. Mineral and Land Resources blflminglon Regional Office 1127 Cardinal Drive Extension I Milmington,NC 28405 910 796 7215 11 Hall, Christine From: Hall, Christine Sent: Friday, July 20, 2018 1:11 PM To: 'Avolis Engineering, P.A.', David Towler Cc: Weaver, Cameron Subject: request for additional info - Patient Parking, Area D, NH100, SW8 960329 Attachments: 2018 07 addinfo 960329.pdf Gentlemen, Attached is a pdf of the request for additional information for the subject project. There are just a few administrative items that need to be addressed. Please let me know if you have any questions or concerns. Please also remember to label any packages submitted with "EXPRESS". Thanks! Christine Hall Environmental Engineer Division of Energy, Mineral and Land Resources — State Slormwater Program Department of Environmental Quality 910 796 7215 office 910 796 7335 direct christine.hall@ncdenr.gov 127 Cardinal Drive Ext. Wilmington, NC 28405 Nothing Compares_ Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to third parties. From: Avolis Engineering, P.A. [mailto:avolisengineering@embargmail.com] Sent: Tuesday, July 10, 2018 2:26 PM To: Hall, Christine <Christine.Hall@ncdenr.gov> Cc: Weaver, Cameron <cameron.weaver@ncdenr.gov> Subject: [External] Design Additional Patient Parking, Area D, NH100 Christine: Thank you for meeting with me today regarding the referenced project. As discussed, please find attached the Supplement EZ Form (Wet Pond) to be included as part of our submittal. Original Will be placed in tomorrow's mail. Thanks and have a great afternoon! Hall, Christine From: Avolis Engineering, P.A. <avolisengineering@embargmail com> Sent: Tuesday, July 10, 2018 2:26 PM To: Hall, Christine Cc: Weaver, Cameron Subject: [External] Design Additional Patient Parking, Area D, NH100 Attachments: Supplement EZ Form Wet Pond.pdf - Christine: Thank you for meeting with me today regarding the referenced project. As discussed, please find attached the Supplement EZ Form (Wet Pond) to be included as part of our submittal: Original will be placed in tomorrow's mail. Thanks and have a great afternoon! Kevin Avolis, PE Avolis Engineering, PA 252.633.0068 Stormwater Narrative Design Additional Patient Parking, Area D, NH100 Marine Corps Base Camp Lejeune, NC Contract Number N40085-18—B-0028 Marine Corps Base Camp Lejeune, North Carolina is proposing to make a parking lot addition on the southern side of the Naval Hospital Complex to increase patient parking capacity. The parking lot expansion will occur as an extension of an existing parking lot area that was constructed in 1996. The project will occur in one drainage area as permitted under existing Stormwater Permit SW8 960329. Runoff will occur through Drainage Area "West Pond" of the Naval Hospital complex. Runoff from Drainage Area "West Area" drains to the existing stormwater retention pond "West Pond". As a part of this project, the existing stormwater pond will be enlarged to provide the required storage volume associated with the increased BUA and expanded drainage basin area associated with this project. The modified basin was resized utilizing the current Stormwater Rules and a 1.5-inch design storm for all existing and new BUA. The project drains to Northeast Creek which is located in the White Oak River Basin. Northeast Creek has a Surface Water Classification of SC, NSW, HOW and a Stream Index of 19 —16 — (3.5). 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I ner- " ') /y w w osa- /64ydor x fk 60eroA:4vvj 7v -n+" ,20-L.77 S7XyLw, �V-HIL sue„, k',�„v,o�tY(� = 3, to S,w 02 eF nl D,+A /+Tt-A°s 114, Arr ] ii'xls-nay -90A =(i ) C4= 98 GXi srnwcd- => i3ay hnc l ti� Sa. CN Va,(ue CAI = 53 C � o • 3v 7*9 G^vJ -MW6/ ssoZ4 1---1- 0)I SI - --o4A 5' ;v &t--Pd IAMau h�4 `_ e?, 5,f.P fiZ = jS�dC� cr-fvd 01 ngLl- "VVU5 may', (oaod T-5 =r% �'�b8'C� --156&5 OF = i��toba s>wzP 9a ` tv�) ( --2y 5Z') r-1SIZ tit 'h5 —�rn�j rG 2 --.ygo M W Q Precipitation Frequency Data Server A Atlas 14, Volume 2, VI name: Hubert, North Ca le: 34.6899•, Longitude: Elevation: 36.25 ft•• source: ESRI Maps •• source: USGS 3 USA , st° {Sjtt POINT PAECIRiATION'FREQUENCY ESTIMATES G.M. Bonnin, D. Martin, B. Lin, T. Parrybok, M.Yekta, and D. Riley NOAA, National Weather Service, Silver Spring, Maryland PF tabular I PF graphical I Maps & aerials PF tabular Page I of 4 ) PDS-based point precipitation frequency estimates with 90% confidence intervals (in inches' Average recurrence Interval ears Duration 25 60 100 200 500 1000 0:492 0.579 0.669 0:752 0.850 0.928 1.00 1.08 1.18 1.26 6-min ( 0655-0.54 ) 0.537-0627) (0818-0.723 ( 0694-0.813 (0.780-0.917 (0.848-7.OD ) ( 0914-1.09 (0.977-1.17 (1.06-1.28 (1.12-7.38 ) 0786 0.926 1.07 1.20 1.35 1.60 1.71 1.87 7.99 �10-min (0.727-0.853) (0.858-1.00) (0.990-1.16) (1.11-1.30) (1.24-1.46) (1.31.48 5-1.60) (1.45-1.73) (1.55-1,86) (1.67-2.02 (1.77-2.17) IF 2. 15+n1p 0.909B307 l.3-1.26 1.25316.46 1. 16265 1.587285 1.7182.02 1.84a2.18 1.96-12.34 2.1032.55 2.2252.72 7.35 1.61 1.93 2.21 2.54 2.82 3.09 3.37 3.74 4.05 30-min (1.25-1.48) 1 (1.49-1.74) 11 (1.78-2.08) 11 (2.04-2.38) 112.33-2.74) (2.58-3.04) 2.81-3.34 (3.D4-3.6d) 1(3.34-6.05 (3.59-4.40 1.68 2.02 2.47 2.87 3.39 3.82 4.26 4.72 5.36 5.91 60-min (1.55-1.82) (1.87-2.18) (228-2.87) (2.65-3.10) (3.11-3.65) (3.49-4.12) (3.87-4.60) (4.27-5.11) 4.80-5.81 (5.24-6.43 F2-hr 2.05 2.48 3.77 3.69 4.47 5.16 5.88 6.66 7.77 8.76 (1.88-2.23) (2.28-2.70) (2.86-3.39) (3.39-4.02) (4,08-4.86) (4.8-5.61) (5.30-6.39) (5.96-7.24) (6.88-8.47 (7.69-9.57) 3-hr 2. 3-2.43 2.46 2.94 30933.70 3. 9-4.42 4. 095.41 5. 076.30 5.9667..26 6.77 8.32 7.93-9.90 8.96 131.3 6-hr 24 6IF 2.98 (2.98-3.61 (3. 5-4.8 4.4895.46 54606.69 6.357082) 7: 9j9.03 (8.30 0.4 9.76 12.4 11.11zi4.2 3.18 3.85 4.88 5.88 7.29 8.58 9.99 11.6 13.9 16.1 ED12-hr (2.88-3.55 (3.48-4.29) (4.41-5.45) (5.29-6.56) (6.50-8.11) (7.0-9.52) (837-11.1) (10.0-12.8) (11.9-154)II(13.5-17.8) T4-hr 3.65 3.34-4.3), 4.44 (4.07-4.90) 5.75 (5.26-6.33 8.86 (&25-7.55, 8.54 (7.71-9.8) 10.0 (8.95-11.0) 11.6 (10.3-12.8) 13.5 (11.8-14.8) 16.2 (13.9-17.9 18.7 (15.7-20.7) 2-day 99 3.8-4.70 4,69-5,69 6,01-7.31 7.12-8.70 879'0.8 102�12.6 11] 4.7 134517.1 15980.8 179'24.0 -824 3-day 4.1254.96 4. 8 801 (6.349767 74 8-9.07 9.15-121.2 106 13.0 121315.0 (137517.3 161820.9 18..11'24.2 4.75 5.75 7.31 8.61 10.5 12.2 13.9 15.9 18.9 21.6 4-day (4.35-5.22) (5.27-6.32) (6.67-8.02) 7.94-9.45) (9.51-11.5) (10.9-13.3) (12.4-15.3 (14.0-17.5) (16.3-20.9 18.3-24.3 7-0ay 5.52 (5.07-6.02) 6.65 (6.12-7.25) 8.36 (7.67-9.11) 9.77 (8.95-10.7) 11.8 (10.8-72.9) 13.5 (12.2-14.8) 15.4 (13.8-16.8) 17.4 (15.4-79.1) 20.3 (17.7-22.4 22.8 (19.6-25.3) 10-day -19.98 6 415.8 569-6.72 6,81-805 8.43 9.74-11.6 116� 3.9 131 147617.9 1648 0.7 187'23.5 2063%.3 20 -0ay28.1 762-8.85 9.370.5 (110- 2,8 12.6 14.7 146617.3 16.6-19.6 184021.9 (203-24.4 2265 24.9-31.1 10.1 12.0 14.4 16.4 19.1 21.2 23.4 25.7 28.8 31.3 30-dey (9.43-108) (11.2-12.9) 11 (135-15.5) (15.2-17.6) L17.7-20.5) (19.6-22.8) 21.5-25.2 (23.4-27.8) (26.0-31.3 (28.0-34.1 12.6 14.9 17.8 20.2 23.4 26.1 28.6 31.6 35.6 38.7 46-dey (11.8-13.6) 1 (14.0-16.1) 11 (16.6-19.1) 11 (18.8-21.7) (21.7-25.2) (24.1-28.1) (26.4-31.1) (28.8-34.2) (32.0-38.6 (34.4-42.2) 60-day 15.4 (745-16.5) 18.2 (7.1-19.4) 21.4 (20.1-22.9) 24.0 (22.5-25.6) 27.5 (25.7-29A) 30.3 ) (28.2-32.3 ( 33.0 30.6-35.4) 35.8 (33.0-8.5) 39.6 (36.7-428 ( 42.5 ) 38.5-462 frequency(PF) estimates In this table are based on frequency analysis of partial duration series (PDS). inparenthesisere PP estimates al lower antl upper bounds of tha 90%confidence interval. The probabilay that precipitation frequency estimates Eation duration antl average recurrence interval) will be greater than the upper bound (or less than the lower bound) Is 5%. Estimates at upper re not checked against probable maximum precipitation (PMP) estimates antl may be higher than currently valid PMP vfer to NOAA Atlas 14 document for more information. Back to ToD _1--._-'_`_-- _-_/1_A-- -.:.-a_--_-L'_--wr_._'lA ronno.l--- 11'iCC1 0- A- G/l unnlo Hydrograph Summary Report I V Page Hyd. No. Hydrograph type (origin) Peak How (cfs) Time Interval (min) Time to peak (min) Volume (Cott) Return period (yrs) Inflow hyd(s) Maximum elevation (ft) Maximum storage (cuft) Hyd 0graph description 1 SCS Runoff 4.57 1 724 14,453 10 — ---- 10-YR,24HR PRE DEV 2 SCS Runoff 0.32 1 736 2,553 1 -- 1-YR,24HR PRE DEVE 3 SCS Runoff 12.01 1 723 34,924 10 — 10-YR,24HR POST DE 4 SCS Runoff 4. 1 723 13,239 1 --- -- 1-YR,24HR POST DEV 5 Reservoir 4.58 1 736 26,848 10 3 15 13,978 10-YR 24 HR POST B 6 Reservoir 0.24 1 884 5,400 1 4 15.1 8,458 1-YR 24 HR POST BM Proj. file: 18006 NH100 PARKIN jlDF file: NEW BERN.IDF Run date: 05-16-2018 Hydrograph Report Hyd. No. 1 10-YR,24HR PRE DEVELOPMENT Hydrograph type Storm frequency Drainage area Basin Slope Tc method Total precip. Storm duration = SCS Runoff = 10 yrs = 2.15 ac = 0.0 % = TR55 = 6.86 in = 24 hrs Hydrograph Discharge Table Peak discharge = 4.57 cfs Time interval = 1 min Curve number = 53 Hydraulic length = 0 ft Time of conc. (Tc) = 3.6 min Distribution = Type III Shape factor = 484 Time -- Outflow Time -- Outflow Time -- Outflow (firs cfs) (hrs cfs) (hrs cfs) Page 1 English Total Volume = 14,453 cuR Time -- Outflow (hrs cfs) 11.38 0.05 14.58 0.33 17.78 0.15 20.98 0.10 11.48 0.08 14.68 0.33 17.88 0.14 21.08 0.10 11.58 0.14 14.78 0.32 17.98 0.14 21.18 0.10 11.68 0.32 14.88 0.31 18.08 0.13 21.28 0.10 11.78 0.61 14.98 0.30 18.18 0.13 21.38 0.10 11.88 1.05 15.08 0.29 18.28 0.13 21.48 0.09 11.98 2.45 15.18 0.29 18.38 0.13 21.58 0.09 12.08 4.45 15.28 0.28 18.48 0.13 21.68 0.09 12.18 2.53 15.38 0.27 18.58 0.13 21.78 0.09 12.28 2.13 15.48 0.26 18.68 0.13 21.88 0.09 12.38 1.69 15.58 0.25 18.78 0.13 21.98 0.09 12.48 1.17 15.68 0.24 18.88 0.13 22.08 0.15 12.58 0.78 15.78 0.24 18.98 0.12 22.18 0.09 12.68 0.72 15.88 0.23 19.08 0.12 22.28 0.09 12.78 0.67 15.98 0.22 19.18 0.12 22.38 0.09 12.88 0.62 16.08 0.21 19.28 0.12 22.48 0.09 12.98 0.56 16.18 0.21 19.38 0.12 22.58 0.09 13.08 0.51 16.28 0.20 19.48 0.12 22.68 0.09 13.18 0.50 16.38 0.20 19.58 0.12 22.78 0.09 13.28 0.49 16.48 0.20 19.68 0.12 22.88 0.09 13.38 0.47 16.58 0.19 19.78 0.12 22.98 0.09 13.48 0.46 16.68 0.19 19.88 0.11 23.08 0.08 13.58 0.44 16.78 0.18 19.98 0.11 23.18 0.08 13.68 0.43 16.88 0.18 20.08 0.11 23.28 0.08 13.78 0.41 16.98 0.18 20.18 0.11 23.38 0.08 13.88 0.40 1T08 0.17 20.28 0.11 23.48 0.08 13.98 0.38 17.18 0.17 20.38 0.11 23.58 0.08 14.08 0.37 17.28 0.17 20.48 0.11 23.68 0.08 14.18 0.36 17.38 0.16 20.58 0.11 23.78 0.08 14.28 0.35 17.48 0.16 20.68 0.10 23.88 0.08 14.38 0.35 17.58 0.15 , 20.78 0.10 23.98 0.08 14.48 0.34 17.68 0.15 20.88 0.10 ...End TR55 Tc Worksheet Hyd. No. 1 10-YR,24HR PRE DEVELOPMENT Storm frequency = 10 yrs Sheet Flow Manning's n-value = 0.011 Flow length = 200.0 ft Two-year 24-hr precip. = 4.44 in Land slope = 0.5 % Travel Time ........................................ = 3.1 min Shallow Concentrated Flow Flow length = 50 ft Watercourse slope = 1.0 % Surface description = Unpaved Average velocity = 1.61 ft/s Travel Time ........................................ = 0.5 min Channel Flow Cross section flow area = 0.0 sqft Wetted perimeter = 0.0 ft Channel slope = 0.0 % Manning's n-value = 0.015 Velocity = 0.00 ft/s Flow length = 0.0 ft Travel Time ........................................ = min Total Travel Time, Tc ........................ = 3.6 min Page 1 1( 0�7 Hydrograph Report Page 1 English Hyd. No. 2 1-YR,24HR PRE DEVELOPMENT Hydrograph type = SCS Runoff Peak discharge = 0.32 cfs Storm frequency = 1 yrs Time interval = 1 min Drainage area = 2.15 ac Curve number = 53 Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = TR55 Time of conc. (Tc) = 3.6 min Total precip. = 3.65 in Distribution = Type III Storm duration = 24 hrs Shape factor = 484 Total Volume = 2,553 cult Hydrograph Discharge Table Time -- Outflow Time -- Outflow Time -- Outflow Time -- Outflow (hrs cfs) (hrs cfs) (hrs cfs) (hrs cfs) 12.00 0.00 15.20 0.07 18.40 0.04 21.60 0.03 12.10 0.29 15.30 0.07 18.50 0.03 21.70 0.03 12.20 0.31 15.40 0.07 18.60 0.03 21.80 0.03 12.30 0.32 15.50 0.07 18.70 0.03 21.90 0.02 12.40 0.28 15.60 0.06 18.80 0.03 22.00 0.02 12.50 0.20 15.70 0.06 18.90 0.03 22.10 0.04 12.60 0.15 15.80 0.06 19.00 0.03 22.20 0.03 12.70 0.14 15.90 0.06 19.10 0.03 22.30 0.03 12.80 0.13 16.00 0.06 19.20 0.03 22.40 0.03 12.90 0.12 16.10 0.05 19.30 0.03 22.50 0.03 13.00 0.11 16.20 0.05 19.40 0.03 22.60 0.03 13.10 0.11 16.30 0.05 19.50 0.03 22.70 0.02 13.20 0.11 16.40 0.05 19.60 0.03 22.80 0.02 13.30 0.10 16.50 0.05 19.70 0.03 22.90 0.02 13.46 0.10 16.60 0.05 19.80 0.03 23.00 0.02 13.50 0.10 16.70 0.05 19.90 0.03 23.10 0.02 13.60 0.10 16.80 0.05 20.00 0.03 23.20 0.02 13.70 0.10 16.90 0.05 20.10 0.03 23.30 0.02 13.80 0.09 17.00 0.05 20.20 0.03 23.40 0.02 13.90 0.09 17.10 0.05 20.30 0.03 23.50 0.02 14.00 0.09 17.20 0.04 20.40 0.03 23.60 0.02 14.10 0.09 17.30 0.04 20.50 0.03 23.70 0.02 14.20 OAS 17.40 0.04 20.60 0.03 23.80 0.02 14.30 0.08 17.50 0.04 20.70 0.03 23.90 0.02 14.40 0.08 17.60 0.04 20.80 0.03 14.50 0.08 17.70 0.04 20.90 0.03 14.60 0.08 17.80 0.04 21.00 0.03 ...End 14.70 0.08 17.90 0.04 21.10 0.03 14.80 0.08 18.00 0.04 21.20 0.03 14.90 0.08 18.10 0.04 21.30 0.03 15.00 0.07 18.20 0.04 21.40 0.03 15.10 0.07 18.30 0.04 21.50 0.03 TR55 Tc Worksheet Hyd. No. 2 1-YR,24HR PRE DEVELOPMENT Storm frequency = 1 yrs Sheet Flow Manning's n-value = 0.011 Flow length = 200.0 ft Two-year 24-hr precip. = 4.44 in Land slope = 0.5 % Travel Time ........................................ = 3.1 min Shallow Concentrated Flow Flow length = 50 ft Watercourse slope = 1.0 % Surface description = Unpaved Average velocity = 1.61 ft/s Travel Time ........................................ = 0.5 min Channel Flow Cross section flow area = 0.0 sqft Wetted perimeter = 0.0 ft Channel slope = 0.0 % Manning's n-value = 0.015 Velocity = 0.00 ft/s Flow length = 0.0 ft TravelTime ........................................ = min Total Travel Time, Tc ........................ = 3.6 min Page 1 Hydrograph Report Page t English Hyd. No. 5 10-YR 24 HR POST BMP Hydrograph type = Reservoir Peak discharge = 4.58 cfs Storm frequency = 10 yrs Time interval = 1 min Inflow hyd. No. = 3 Reservoir name = WEST POND Max. Elevation = 15.73 ft Max. Storage = 13,978 cuft Storage Indicaeon method used. Total Volume = 26,848 tuft Hydrograph Discharge Table Time Inflow Elevation Clv A Clv B Clv C Clv D Wr A Wr B Wr C Wr D Outflow (hrs) cfs ft cfs cfs cfs cfs cfs cfs cfs cfs cfs 11.80 3.33 14.90 2.31 0.05 ----- ----- ----- ----- ----- ----- 0.05 11.90 4.42 15.06 2.81 0.05 ----- ----- ----- ----- ----- - 0.05 12.00 9.12 15.27 3.34 0.06 ----- ----- 0.67 ----- ----- ----- 0.73 12.10 10.10 15.61 4.91 0.07 ----- ----- 3.28 ----- ----- ----- 3.35 12.20 5.29 15.72 5.96 0.07 ----- ----- 4.41 ----- ----- ----- 4.48 12.30 4.25 15.73 6.02 0.07 ----- ----- 4.49 ----- ----- ----- 4.56 12.40 3.19 15.70 5.80 0.07 ----- ----- 4,20 ----- ----- ----- 4.27 12.50 2.10 15.65 5.31 0.07 ----- ----- 3.69 ----- ----- ----- 3.76 12.60 1.47 15.59 4.65 0.07 ----- ----- 3.06 ----- ----- ----- 3.13 12.70 1.35 15.53 3.98 0.07 ----- ----- 2.57 ----- ----- ----- 2.64 12.80 1.24 15.49 3.59 0.07 ----- ----- 2.20 ----- ----- ----- 2.26 12.90 1.12 15.46 3.58 0.07 ----- ----- 1.92 ----- ----- ----- 1.99 13.00 1.00 15.43 3.57 0.07 ----- ----- 1.68 ----- ----- ----- 1.75 13.10 0.93 15.40 3.57 0.06 ----- ----- 1.48 ----- ----- ----- 1.55 13.20 0.90 15.38 3.53 0.06 ----- ----- 1.34 ----- ----- ----- 1.41 13.30 0.87 15.36 3.50 0.06 ----- ----- 1.23 ----- ----- ----- 1.29 13.40 0.84 15.35 3.48 0.06 ----- ----- 1.13 ----- ----- ----- 1.19 13.50 0.81 15.34 3.46 0.06 ----- --- 1.05 --- ---- ----- 1.11 13.60 0.78 15.33 3.44 0.06 ----- ----- 0.98 ----- ----- ----- 1.04 13.70 0.75 15.32 3.42 0.06 ----- ----- 0.92 ----- ----- ----- 0.98 13.80 0.72 15.31 3.41 0.06 ----- ----- 0.86 ----- ----- ----- 0.93 13.90 0.69 15.30 3.40 0.06 ---- ----- 0.82 . ----- ----- 0.88 14.00 0.66 15.29 3.38 0.06 ----- ----- 0.78 ----- ----- ----- 0.84 14.10 0.64 15.29 3.37 0,06 ----- ----- 0.74 ----- ----- ----- 0.81 14.20 0.62 15.28 3.36 0.06 ----- ----- 0.71 ----- ----- ----- 0.78 14.30 0.61 15.28 3.35 0.06 ----- ----- 0.69 ----- ----- ----- 0.75 14.40 0.59 15.27 3.34 0.06 ----- ----- 0.66 ----- ----- ----- 0.72 14.50 0.58 15.27 3.33 0.06 ----- ----- 0.64 ----- ----- ----- 0.70 14.60 0.56 15.26 3.32 0.06 ----- ----- 0.61 ----- ----- ----- 0.68 14.70 0.55 15.26 3.31 0.06 ----- ----- 0.59 ----- ----- ----- 0.65 14.80 0.53 15.26 3.31 0.06 ---- --- 0.57 - - -- 0.63 14.90 0.52 15.25 3.30 0.06 ----- ----- 0.55 ----- ----- ----- 0.62 15.00 0.50 15.25 3.29 0.06 ----- ----- 0.54 ----- ----- ----- 0.60 15.10 0.49 15.25 3.29 0.06 ----- ----- 0.52 ----- ----- ----- 0.58 15.20 0.48 15.24 3.28 0.06 ----- ----- 0.50 ----- ----- ----- 0.56 15.30 0.46 15.24 3.27 0.06 ----- ----- 0.49 ----- ----- ----- 0.55 Continues on next page I 10-YR 24 HR POST BMP Page 2 U Hydrograph Discharge Table Time Inflow Elevation Clv A Clv B Clv C Civ D Wr A Wr B Wr C Wr D Outflow (hrs) cfs ft cfs cfs cfs cfs cfs cfs cfs cfs cfs 15.40 0.45 15.24 3.27 0.06 ----- ----- 0.47 ----- ----- ----- 0.53 15.50 0.43 15.23 3.26 0.06 ----- ----- 0.45 ----- ----- ----- 0.51 15.60 0.42 15.23 3.26 0.06 ----- ----- 0.44 ----- ----- ----- 0.50 15.70 0.40 15.23 3.25 0.06 ----- ----- 0.42 ----- ----- ----- 0.48 15.80 0.39 15.22 3.24 0.06 ----- ----- 0.41 ----- ----- ----- 0.47 15.90 0.37 15.22 3.24 0.06 ----- ----- 0.39 ----- ----- ----- 0.45 16.00 0.35 15.22 3.23 0.06 ----- ----- 0.38 ----- ----- ----- 0.43 16.10 0.34 15.21 3.23 0.06 ----- ----- 0.36 ----- ----- ----- 0.42 16.20 0.34 15.21 3.22 0.06 ----- ----- 0.35 ----- ----- ----- 0.41 16.30 0.33 15.21 3.22 0.06 ----- ----- 0.33 ----- ----- ----- 0.39 16.40 0.32 15.21 3.21 0.06 --- ----- 0.32 --- ----- 0.38 16.50 0.32 15.21 3.21 0.06 ----- ----- 0.31 ----- ----- ----- 0.37 16.60 0.31 15.20 3.21 0.06 ----- ----- 0.30 ----- ----- ----- 0.36 16.70 0.30 15.20 3.20 0.06 ----- ----- 0.29 ----- ----- ----- 0.35 16.80 0.30 15.20 3.20 0.06 ----- ----- 0.28 ----- ----- ----- 0.34 16.90 0.29 15.20 3.19 0.06 ----- ----- 0.28 ----- ----- ----- 0.34 17.00 0.28 15.20 3.19 0.06 ----- ----- 0.27 ----- ----- ----- 0.33 17.10 0.28 15.19 3.18 0.06 ----- ----- 0.27 ----- ----- ----- 0.33 17.20 0.27 15.19 3.18 0.06 ----- ----- 0.26 ----- ----- ----- 0.32 17.30 0.27 15.19 3.17 0.06 ----- ----- 0.26 ----- ----- ----- 0.32 17.40 0.26 15.19 3.17 0.06 ----- ----- 0.25 ----- ----- ----- 0.31 17.50 0.25 15.19 3.16 0.06 ----- ----- 0.25 ----- ----- ----- 0.31 17.60 0.25 15.18 3.16 0.06 ----- ----- 0.24 ----- ----- ----- 0.30 17.70 0.24 15.18 3.15 0.06 ----- ----- 0.24 ----- ----- ----- 0.29 17.80 0.23 15.18 3.15 0.06 ----- ----- 0.23 ----- ----- ----- 0.29 17.90 0.23 15.18 3.14 0.06 ----- ----- 0.22 ----- ----- ----- 0.28 18.00 0.22 15.18 3.14 0.06 ---- ----- 0.22 ----- ----- ----- 0.28 18.10 0.21 15.17 3.13 0.06 ----- ----- 0.21 ----- ----- ----- 0.27 18.20 0.21 15.17 3.13 0.06 ----- ----- 0.21 ----- ----- ----- 0.26 18.30 0.21 15.17 3.12 0.06 ----- ----- 0.20 ----- ----- ----- 0.26 18.40 0.21 15.17 3.12 0.06 ----- ----- 0.20 ----- ----- ----- 0.25 18.50 0.21 15.17 3.11 0.06 ---- ----- ' 0.19 ----- ----- ----- 0.25 18.60 0.20 15.17 3.11 0.06 ----- ----- 0.19 ----- ----- ----- 0.24 18.70 0.20 15.16 3.11 0.05 ----- ----- 0.18 ----- ----- ----- 0.24 18.80 0.20 15.16 3.10 0.06 ----- ----- 0.18 ----- ----- ----- 0.24 18.90 0.20 15.16 3.10 0.06 ----- ----- 0.17 ----- ----- ----- 0.23 19.00 0.20 15.16 3.10 0.06 ----- ----- 0.17 ----- ----- ----- 0.23 19.10 0.19 15.16 3.09 0.06 ----- ----- 0.17 ----- ----- ----- 0.23 19.20 0.19 15.16 3.09 0.06 ----- ----- 0.16 ----- ----- ----- 0.22 19.30 0.19 15.16 3.09 0.06 ----- ----- 0.16 ----- ----- ----- 0.22 19.40 0.19 15.16 3.08 0.06 ----- ----- 0.16 ----- ----- ----- 0.22 19.50 0.19 15.15 3.08 0.06 ----- ----- 0.16 ----- ----- ----- 0.21 19.60 0.18 15.15 3.08 0.06 ----- ----- 0.15 ----- ----- ----- 0.21 19.70 0.18 15.15 3.08 0.06 ---- ----- 0.15 ----- ----- ----- 0.21 19.80 0.18 15.15 3.07 0.06 ----- ----- 0.15 ----- ----- ----- 0.21 19.90 0.18 15.15 3.07 0.06 ----- ----- 0.14 ----- ----- ----- 0.20 20.00 0.18 15.15 3.07 0.06 ----- ----- 0.14 ----- ----- ----- 0.20 20.10 0.17 15.15 3.07 0.06 ----- ----- 0.14 ----- ----- ----- 0.20 20.20 0.17 15.15 3.07 0.06 ----- ----- 0.14 ----- ----- ----- 0.20 Continues on next page... 10-YR 24 HR POST BMP Page 3 91 Hydrograph Discharge Table Time Inflow Elevation Clv A Clv B Civ C Clv D Wr A Wr B Wr C Wr D Outflow (hrs) cfs ft cfs cfs cfs cfs cfs cfs cfs cfs cfs 20.30 0.17 15.15 3.06 0.06 ----- ----- 0.14 ----- ----- ----- 0.19 20.40 0.17 15.15 3.06 0.06 ----- ----- 0.13 ----- ----- ----- 0.19 20.50 0.17 15.15 3.06 0.06 ----- ----- 0.13 ----- ----- ----- 0.19' 20.60 0.16 15.15 3.06 0.06 ----- ----- 0.13 ----- ----- ----- 0.19 20.70 0.16 15.14 3.05 0.06 ----- ----- 0.13 ----- ----- ----- 0.18 20.80 0.16 15.14 3.05 0.06 ----- ----- 0.12 ----- ----- ----- 0.18 20.90 0.16 15.14 3.05 0.06 ----- ----- 0.12 ----- ----- ----- 0.18 21.00 0.16 15.14 3.05 0.06 ----- ----- 0.12 ----- ----- ----- 0.18 21.10 0.15 15.14 3.05 0.06 ----- ----- 0.12 ----- ----- ----- 0.17 21.20 0.15 15.14 3.05 0.06 ----- ----- 0.12 ----- ----- ----- 0.17 21.30 0.15 15.14 3.04 0.06 ----- ----- 0.11 ----- ----- ----- 0.17 21.40 0.15 15.14 3.04 0.06 ----- ----- 0.11 ----- ----- ----- 0.17 21.50 0.15 15.14 3.04 0.06 ----- ----- 0.11 ----- ----- ----- 0.17 21.60 0.14 15.14 3.04 0.06 ----- ----- 0.11 ---- ----- ----- 0.16 21.70 0.14 15.14 3.04 0.06 ----- ----- 0.10 ----- ----- ----- 0.16 21.80 0.14 15.14 3.03 0.06 ----- ----- 0.10 ----- ----- ----- 0.16 21.90 0.14 15.14 3.03 0.06 ----- ----- 0.10 ----- ----- ----- 0.16 22.00 0.14 15.13 3.03 0.06 ----- ----- 0.10 ----- ----- ----- 0.16 22.10 0.21 15.14 3.04 0.06 ----- ----- 0.11 ----- ----- ----- 0.16 22.20 0.14 15.14 3.04 0.06 ----- ----- 0.11 ----- ----- ----- 0.16 22.30 0.14 15.14 3.03 0.06 ----- ----- 0.10 ----- ----- ----- 0.16 22.40 0.14 15.14 3.03 0.06 ----- ----- 0.10 ----- ----- ----- 0.16 22.50 0.14 15.13 3.03 0.06 ----- ----- 0.10 ----- ----- ----- 0.16 22.60 0.14 15.13 3.03 0.06 ----- ----- 0.10 ----- ----- ----- 0.16 22.70 0.14 15.13 3.03 0.06 ----- ----- 0.10 ----- ----- ----- 0.15 22.80 0.13 15.13 3.03 0.06 ----- ----- 0.09 ----- ----- ----- 0.15 22.90 0.13 15.13 3.02 0.06 ----- ----- 0.09 ----- ----- ----- 0.15 23.00 0.13 15.13 3.02 0.06 ----- ----- 0.09 ----- ----- ----- 0.15 23.10 0.13 15.13 3.02 0.06 ----- ----- 0.09 ----- ----- ----- 0.15 23.20 0.13 15.13 3.02 0.06 ----- ----- 0.09 ----- ----- ----- 0.14 23.30 0.13 15.13 3.02 0.06 ----- ----- 0.09 ----- ----- ----- 0.14 23.40 0.13 15.13 3.02 0.06 ----- ----- 0.08 ----- ----- ----- 0.14 23.50 0.12 15.13 3.02 0.06 ----- ----- 0.08 ----- ----- ----- 0.14 23.60 0.12 15.13 3.01 0.06 ----- ----- 0.08 ----- ----- ----- 0.14 23.70 0.12 15.13 3.01 0.06 ----- ----- 0.08 ----- ----- ----- 0.14 23.80 0.12 15.13 3.01 0.06 ----- ----- 0.08 ----- ----- ----- 0.13 23.90 0.12 15.13 3.01 0.06 ----- ----- 0.08 ----- ----- ----- 0.13 24.00 0.00 15.13 3.01 0.06 ----- ----- 0.07 ----- ----- ----- 0.13 End Reservoir Report Reservoir No. 1 - WEST POND Pond Data Pond storage is based on known contour areas Stage / Storage Table Page t Oil - English Stage Elevation Contour area Incr. Storage Total storage ft ft sgft cuft cuft 0.00 14.13 6,683 0 0 0.87 15.00 9,070 6,853 6,853 1.87 16.00 10,451 9,761 16,613 / Culvert I Orifice Strygtures���1� Weir Structures VD [A] [B] [C] [D] [A] [B] [C] [D] Rise in = 18.0 1.5 0.0 0.0 Crest Len ft = 3.0 16.0 0.0 0.0 Span in = 18.0 1.5 0.0 0.0 Crest El. ft = 15.10 16.00 0.00 0.00 No. Barrels = 1 1 0 0 Weir Coeff. _ = 3.00 3.00 0.00 0.00 Invert El. ft = 14.00 14.13 0.00 0.00 Eqn. Exp. = 1.50 1.50 0.00 0.00 Length It = 25.0 0.1 0.0 0.0 Multistage = Yes No No No Slope % = 0.50 1.00 0.00 0.00 N-Value = .013 .013 .013 .000 Orif. Coeff. = 0.60 0.60 6.60 0.00 Multistage = ----- No No No Tailwater Elevation = 0.00 ft Note, All outllo have peen analyzed under inlet and outlet control. Stage / Storage / Discharge Table Stage Storage Elevation Clv A Clv B Clv C Civ D Wr A Wr B Wr C Wr D Discharge ft cult ft cfs cfs cfs cfs cfs cfs cfs cfs cfs 0.00 0 14.13 0.11 0.00 --- 0.00 0.00 --- --- 0.00 0.87 6,853 15.00 2.63 0.05 --- --- 0.00 0.00 --- --- 0.05 1.87 16,613 16.00 8.02 0.08 --- -- 7.68 0.00 --- --- 7.76 a3 5 - Reservoir -10 Yr - Qp = 4.58 cfs 15 10 CY 5 0 5 10 15 20 25 Time (hrs) / Hyd. 3 Hyd. 5 Hydrograph Report Page 1 English Hyd. No. 6 1-YR 24 HR POST BMP Hydrograph type = Reservoir Peak discharge = 0.24 cfs Storm frequency = Inflow hyd. No. = 1 yrs 4 Time interval Reservoir name = 1 min = WEST POND Max. Elevation = 15.16 ft Max. Storage = 8,458 cult Storage tAdicaGon meMod usetl. Total Volume = 5,400 cuR Hydrograph Discharge Table Time Inflow Elevation Clv A Clv B Clv C Clv D Wr A Wr B Wr C Wr D Outflow (hrs) cfs fit cfs cfs cfs cfs cfs cfs cfs cfs cfs 11.50 0.28 14.22 0.26 0.00 ----- ----- ----- ----- ---- ----- 0.00 11.60 0.42 14.24 0.30 0.01 ----- ----- ----- ----- ----- ----- 0.01 11.70 0.71 14.26 0.36 0.01 ----- ----- ----- ----- ----- ----- 0.01 11.80 1.07 14.30 0.45 0.02 ----- ----- ----- ---- ----- ----- 0.02 11.90 1.51 14.36 0.63 0.02 ----- ----- ----- ---- ----- - 0.02 12.00 3.33 14.46 0.90 0.03 ----- ----- ----- ----- ----- ----- 0.03 12.10 3.95 14.65 1.49 0.04 ----- ----- ----- ----- ----- ----- 0.04 12.20 2.15 14.77 1.91 0.05 ----- ----- ----- ----- ----- ----- 0.05 12.30 1.76 14.86 2.20 0.05 ----- ---- ----- ----- ----- ----- 0.05 12.40 1.34 14.93 2.41 0.05 ----- ----- ----- ----- ----- ----- 0.05 12.50 0.89 14.98 2.56 0.05 ----- ----- ----- ----- ----- ----- 0.05 12.60 0.62 15.01 2.65 0.05 ----- ----- ----- ----- ----- ----- 0.05 12.70 0.58 15.03 2.71 0.05 ----- ----- ----- ----- ----- ----- 0.05 12.80 0.53 15.05 2.77 0.05 ----- ----- ----- ----- ----- ----- 0.05 12.90 0.48 15.06 2.82 0.06 ----- ----- ----- ----- ----- ----- 0.06 13.00 0.43 15.08 2.87 0.06 ----- ----- ----- ----- ----- ----- 0.06 13.10 0.40 15.09 2.91 0.06 ----- ----- ----- ----- ----- --- 0.06 13.20 0.39 15.10 2.95 0.06 -- - 0.01 -- - - 0.06 13.30 0.38 15.11 2.98 0.06 ----- ----- 0.04 ----- ----- ---- 0.10 13.40 0.37 15.12 3.00 0.06 ----- ----- 0.07 ----- ----- ----- 0.12 13.50 0.35 15.13 3.02 0.06 ----- ----- 0.09 ----- ----- ----- 0.15 13.60 0.34 15.14 3.04 0.06 ----- ----- 0.11 ----- ----- ----- 0.17 13.70 0.33 15.14 3.06 0.06 ----- ----- 0.13 ----- ----- ----- 0.18 13.80 0.32 15.15 3.07 0.06 ----- ----- 0.14 ----- ----- ----- 0.20 13.90 0.30 15.15 3.08 0.06 ----- ----- 0.15 ----- ----- ----- 0.21 14.00 0.29 15.16 3.09 0.06 ----- ----- 0.16 ----- ----- ----- 0.22 14.10 0.28 15.16 3.09 0.06 ----- ----- 0.17 ----- ----- ----- 0.23 14.20 0.27 15.16 3.10 0.06 ----- ----- 0.17 ----- ----- ----- 0.23 14.30 0.27 15.16 3.10 0.06 ----- ----- 0.18 ----- ----- ----- 0.23 14.40 0.26 15.16 3.10 0.06 ----- ----- 0.18 ----- ----- ----- 0.24 14.50 0.26 15.16 3.11 0.06 ---- --- 0.18 ----- ----- --- 0.24 14.60 0.25 15.16 3.11 0.06 ----- ----- 0.18 ----- ----- ----- 0.24 14.70 0.24 15.16 3.11 0.06 ----- ----- 0.18 ----- ----- ----- 0.24 14.80 0.24 15.16 3.11 0.06 ----- ----- 0.18 ----- ----- ----- 0.24 14.90 0.23 15.16 3.11 0.06 ----- ----- 0.18 ----- ----- ----- 0.24 15.00 0.22 15.16 3.11 0.06 ----- 0.18 ----- ----- ----- 0.24 Continues on next page... 1-YR 24 HR POST BMP Page 2 g Hydrograph Discharge Table Time Inflow Elevation Clv A Clv B Clv C Clv D Wr A Wr B Wr C Wr D Outflow (hrs) US ft Cfs Cfs Cfs Cfs Cfs Cfs Cfs Cfs Cfs 15.10 0.22 15.16 3.10 0.06 ----- ----- 0.18 ----- ----- ----- 0.24 15.20 0.21 15.16 3.10 0.06 ----- ----- 0.18 ----- ----- ----- 0.24 15.30 0.21 15.16 3.10 0.06 ----- ----- 0.17 ----- ----- ----- 0.23 15.40 0.20 15.16 3.10 0.06 ----- ----- 0.17 ----- ----- ----- 0.23 15.50 0.19 15.16 3.09 0.06 ----- ----- 0.17 ----- ----- ----- 0.23 15.60 0.19 15.16 3.09 0.06 ----- ----- 0.16 ----- ----- ----- 0.22 15.70 0.18 15.16 3.09 0.06 ----- ----- 0.16 ----- ----- ----- 0.22 15.80 0.17 15.15 3.08 0.06 ----- ----- 0.16 ---- ----- ----- 0.21 15.90 0.17 15.15 3.08 0.06 ----- ----- 0.15 ----- ----- ----- 0.21 16.00 0.16 15.15 3.07 0.06 ----- ----- 0.15 ----- ----- ----- 0.21 16.10 0.15 15.15 3.07 0.06 ----- ----- 0.14 ----- ----- ----- 0.20 16.20 0.15 15.15 3.07 0.06 ----- ----- 0.14 ----- ----- ----- 0.20 16.30 0.15 15.15 3.06 0.06 ----- ----- 0.13 ----- ----- ----- 0.19 16.40 0.15 15.15 3.06 0.06 ----- ----- 0.13 ----- ----- ----- 0.19 16.50 0.14 15.14 3.05 0.06 ----- ----- 0.12 ----- ----- ----- 0.18 16.60 0.14 15.14 3.05 0.06 ----- ----- 0.12 ----- ----- ----- 0.18 16.70 0.14 15.14 3.05 0.06 ----- ----- 0.12 ----- ----- ----- 0.17 16.80 0.13 15.14 3.04 0.06 ----- ----- 0.11 ----- ----- ----- 0.17 16.90 0.13 15.14 3.04 0.06 ----- ----- 0.11 ----- ----- ----- 0.17 17.00 0.13 15.14 3.04 0.06 ----- ----- 0.11 ----- ----- ----- 0.16 17.10 0.13 15.14 3.03 0.06 ----- ----- 0.10 ----- ----- ----- 0.16 17.20 0.12 15.13 3.03 0.06 ----- ----- 0.10 ----- ----- - 0.16 17.30 0.12 15.13 3.03 0.06 ----- ----- 0.10 ----- ---- ----- 0.15 17.40 0.12 15.13 3.02 0.06 ----- ----- 0.09 ----- ----- ----- 0.15 17.50 0.11 15.13 3.02 0.06 ----- ----- 0.09 ----- ----- ----- 0.15 17.60 0.11 15.13 3.02 0.06 ----- ----- 0.09 ----- ----- ----- 0.14 17.70 0.11 15.13 3.01 0.06 ----- ---- 0.08 ----- ---- ----- 0.14 17.80 0.11 15.13 3.01 0.06 ----- ----- 0.08 ----- ----- ----- 0.14 17.90 0.10 15.13 3.01 0.06 ----- ----- 0.08 ----- ----- ----- 0.13 18.00 0.10 15.13 3.01 0.06 ----- ----- 0.07 ----- ----- ----- 0.13 18.10 0.10 15.12 3.00 0.06 ----- ----- 0.07 ----- ----- ----- . 0.13 18.20 0.10 15.12 3.00 0.06 ----- ----- 0.07 ----- ----- ----- 0.12 18.30 0.10 15.12 3.00 0.06 ----- ----- 0.06 ----- ----- ----- 0.12 18.40 0.09 15.12 3.00 0.06 ----- ----- 0.06 ----- ----- ----- 0.12 18.50 0.09 15.12 2.99 0.06 ----- ----- 0.06 ----- ----- ----- 0.12 18.60 0.09 15.12 2.99 0.06 ----- ----- 0.06 ----- ----- ----- 0.11 18.70 0.09 15.12 2.99 0.06 ----- ----- 0.05 ----- ----- 0.11 18.80 0.09 15.12 2.99 0.06 ----- ----- 0.05 ----- ----- ----- 0.11 18.90 0.09 15.12 2.99 0.06 ----- ----- 0.05 ----- ----- ----- 0.11 19.00 0.09 15.12 2.98 0.06 ----- ----- 0.05 ----- ----- ----- 0.11 19.10 0.09 15.12 2.98 0.06 ----- ----- 0.05 ----- ----- ----- 0.10 19.20 0.09 15.12 2.98 0.06 ----- ----- 0.05 ----- ----- ----- 0.10 19.30 0.09 15.12 2.98 0.06 ----- ----- 0.04 ----- ----- ----- 0.10 19.40 0.09 15.11 2.98 0.06 ----- ----- 0.04 ----- ----- ----- 0.10 19.50 0.09 15.11 2.98 0.06 ----- ----- 0.04 ----- ----- ----- 0.10 19.60 0.08 15.11 2.98 0.06 ----- ----- 0.04 ----- ----- ----- 0.10 19.70 0.08 15.11 2.98 0.06 ----- ----- 0.04 ----- ----- ----- 0.10 19.80 0.08 15.11 2.97 0.06 ----- ----- 0.04 ----- ----- ----- 0.09 19.90 0.08 15.11 2.97 0.06 ----- ----- 0.04 ----- ----- ----- 0.09 Continues on next page... 1-YR 24 HR POST BMP Page 3 1 ! . Hydrograph Discharge Table Time Inflow Elevation Clv A Clv B Clv, C Clv D Wr A Wr B Wr C Wr D Outflow (hrs) cfs ft Cfs Cfs Cfs Cfs Cfs Cfs Cfs Cfs Cfs 20.00 0.08 15.11 2.97 0.06 ----- ----- 0.04 ----- ----- ----- 0.09 20.10 0.08 15.11 2.97 0.06 ----- ----- 0.03 ----- ---- ----- 0.09 20.20 0.08 15.11 2.97 0.06 ----- ----- 0.03 ----- ----- 0.09 20.30 0.08 15.11 2.97 0.06 ----- ----- 0.03 ----- ----- ----- 0.09 20.40 0.08 15.11 2.97 0.06 ----- ----- 0.03 ----- ----- ----- 0.09 20.50 0.08 15.11 2.97 0.06 ----- ----- 0.03 ----- ----- ----- 0.09 20.60 0.08 15.11 2.97 0.06 ----- ----- 0.03 ----- ----- ----- 0.09 20.70 0.07 15.11 2.97 0.06 ----- ----- 0.03 ----- ----- ----- 0.08 20.80 0.07 15.11 2.96 0.06 ----- ----- 0.03 ----- ----- ----- 0.08 20.90 0.07 15.11 2.96 0.06 ----- ----- 0.03 ----- ----- ----- 0.08 21.00 0.07 15.11 2.96 0.06 ----- ----- 0.02 ----- ----- ----- 0.08 21.10 0.07 15.11 2.96 0.06 ----- ---- 0.02 ----- ----- ----- 0.08 21.20 0.07 15.11 2.96 0.06 ----- ----- 0.02 ----- ---- ----- 0.08 21.30 0.07 15.11 2.96 0.06 ----- ----- 0.02 ----- ----- ----- 0.08 21.40 0.07 15.11 2.96 0.06 ----- ----- 0.02 ----- ----- ----- 0.08 21.50 0.07 15.11 2.96 0.06 ----- ----- 0.02 ---- ----- ----- 0.08 21.60 0.07 15.11 2.96 0.06 ----- ----- 0.02 ----- ----- ----- 0.08 21.70 0.07 15.11 2.96 0.06 ----- ----- 0.02 ----- ----- ----- 0.07 21.80 0.06 15.11 2.96 0.06 ----- ----- 0.02 ----- ----- ----- 0.07 21.90 0.06 15.11 2.95 0.06 ----- ----- 0.02 ----- ----- ----- 0.07 22.00 0.06 15.11 2.95 0.06 ----- ----- 0.02 ----- ----- ----- 0.07 22.10 0.09 15.11 2.96 0.06 ----- ----- 0.02 ----- ----- ----- 0.08 22.20 0.07 15.11 2.96 0.06 ----- ----- 0.02 ----- ----- ----- 0.07 22.30 0.07 15.11 2.96 0.06 ----- ----- 0.02 ----- ----- ----- 0.07 22.40 0.06 15.11 2.96 0.06 ----- ----- 0.02 ----- ----- ----- 0.07 22.50 0.06 15.11 2.95 0.06 ----- ----- 0.02 ----- ----- ----- 0.07 22.60 0.06 15.11 2.95 0.06 ----- ----- 0.01 ----- ----- ----- 0.07 22.70 0.06 15.10 2.95 0.06 ----- ----- 0.01 ----- ----- ----- 0.07 22.80 0.06 15.10 2.95 0.06 ----- ----- 0.01 ----- ----- ----- 0.07 22.90 0.06 15.10 2.95 0.06 ----- ----- 0.01 ----- ----- ----- 0.07 23.00 0.06 15.10 2.95 0.06 ----- ----- 0.01 ----- ----- ----- 0.07 23.10 0.06 15.10 2.95 0.06 ----- ----- 0.01 ----- ----- ----- 0.07 23.20 0.06 15.10 2.95 0.06 ----- ----- 0.01 ----- ----- ----- 0.07 23.30 0.06 15.10 2.95 0.06 ----- ----- 0.01 ----- ----- ----- 0.07 23.40 0.06 15.10 2.95 0.06 ----- ----- 0.01 ----- ----- ----- 0.06 23.50 0.06 15.10 2.95 0.06 ----- ----- 0.01 --- ----- ----- 0.06 23.60 0.06 15.10 2.95 0.06 ----- ----- 0.01 ----- ----- ----- 0.06 23.70 0.06 15.10 2.95 0.06 ----- ----- 0.01 ----- ----- ----- 0.06 23.80 0.05 15.10 2.95 0.06 ----- ----- 0.01 ----- ----- 0.06 23.90 0.05 15.10 2.94 0.06 ----- ----- 0.00 ----- - ----- 0.06 24.00 0.00 15.10 2.94 0.06 ----- ----- 0.00 ----- ---- ----- 0.06 ...End Reservoir Report Reservoir No. 1 - WEST POND Pond Data Pond storage is based on known contour areas Stage / Storage Table Page.1 ;0 English Stage ft 0.00 0.87 1.87 Elevation ft 14.13. 15.00 - 16.00 Contour area sqft 6,683 9,070 10,451 Incr. Storage Total storage cult cult 0 0 6,853 6,853 9,761 16,613 Culvert / Orifice Structures Weir Structures [A] [B] [C] [D] [A] [B] [C] [D] Rise in = 18.0 1.5 0.0 0.0 Crest Len ft = 3.0 16.0 0.0 0.0 Span in = 18.0 1.5 0.0 0.0 Crest El. ft = 15.10 16.00 0.00 0.00 No. Barrels = 1 1 0 0 Weir Coeff. = 3.00 3.00 0.00 0.00 Invert El. ft = 14.00 14.13 0.00 0.00 Eqn. Exp. = 1.50 1.50 0.00 0.00 Length ft = 25.0 0.1 0.0 0.0 Multistage = Yes No No No Slope % = 0.50 1.00 0.00 0.00 N-Value = .013 .013 .013 .000 Crif. Coeff. = 0.60 0.60 0.60 0.00 Multistage = ----- No No No Tailwater Elevation = 0.00 ft Note. All ouMlowa have been analysed under inlet and outlet control. Stage / Storage / Discharge Table Stage Storage Elevation Clv A Civ B Clv C Clv D Wr A Wr B Wr C Wr D Discharge ft cuft ft cfs cfs cfs cfs cfs cfs cfs cfs cfs 0.00 0 14.13 0.11 0.00 --- --- 0.00 0.00 --- --- 0.00 0.87 6,853 15.00 2.63 0.05 --- --- 0.00 0.00 --- --- 0.05 1.87 16,613 16.00 8.02 0.08 --- --- 7.68 0.00 --- --- 7.76 I 6-Reservoir-1 Yr-Qp=0.24cfs 5 4 w 3 C1 2 1 00= -- --- -5�_ -- _ 10 -J 15 20 25 Time (hrs) / Hyd. 4 D Hyd. 6 M E'/zo5,vyJ Ce*-�2, (21tr�ctdL.,p S l_./t&ul- /P o-�n -Z;qe -r- Usg- Sty bpA -.TN7y.5 !S 77;3 Lg$ '�JO3G T= 6, y IV, INl2 C VrOWL ) s" = At ca-r P cZ�4: �•�Z�/8,y�ti / �yvy�Ca, ►��-J = �(. 2 ens A pAo,^J (wre 0,0(.q j t�{n,w��w �atic�a er jsz ✓z,P e e Z- t, = 144 4Gt b sn 1 0-2 18 9 30 n ALA OSe TR►S FvA -Powo buT2r, PIPE- (.cW �h c w Is �o •• s an vim, -ivy' 3 w,LL -I;>>6- US en As &+z5)� �v ✓L, � �a�-Sp's2 vc,Ti ate) S, �� T�,�►w� 43�s,� CTo �rti5,^'� Vv �w� w�w►H (%ZtTpui✓ VOLUME}' = 020?o Pr3 Fuca kv, M�u PDaL Ve-Luwir Test Vv LUM ir a 1 q, (� 02 F73 , -2, pr3 O S/ 1=o✓Z 3- bh j.kAIJbow#,/ SKtekGti►�vL S'.�e...� a?,o .k,�ertr�s G�'G / �'J GG�' SI io _ �.. �i /rLCfs /Jr 3Z Calculate Skimmer Size Basin Volume in Cubic Feet Days to Drain' NC assume 3 days to drain 7,8281 Cu.Ft 3 Days Estimate Volume of Basin Length Width Top of water surface in feet Feet . Bottom dimensions in feet Feet Depth in feet Feet 3� Skimmer Size 2.0 Inch Orifice Radius 0.9 Inch[es] Orifice Diameter 1.7 Inch[es] VOLUME Cu. Ft. ►- For DEAR Use ONLY North Carolina Department of Environment and se � Natural Resources NCDENR Request for Express Permit Review co,nr•, _ FILL-IN all the information below and CHECK the Permit(s) you are requesting for express review. Call and Email the completed form to the Permit Coordinator along with a completed DETAILED narrative site plan (PDF file) and vicinity map (same items expected in the app/icatio ap ckage of the project location. Please include this form in the application package. • Asheville Region -Alison Davidson 828-296-4698;alison.davidson(a)ncdenr.gov • Fayetteville or Raleigh Region -David Lee 919-791-4203; daviddee(a)ncdenri • Mooresville & Winston Salem Region - Patrick Grogan 704-235-2107 or patrick.grogan(Bncdenr.gov • Washington Region -Lyn Hardison 252-948-3842 or lyn.hardisongt7ncdenrgov • Wilmington Region -Cameron Weaver 910-796-7303 orcameron.weaver(a)ncdenr.gov NOTE. Project application received after 12 noon will be stamped in the following work day Project Name: DESIGN ADDITIONAL PATIENT PARKING, AREA D. NH100 County: ONSLOW Applicant: COMMANDING OFFICER Company: MCB CAMP LEJEUNE Address: 1005 MICHAEL ROAD City: CAMP LEJEUNE, State: NC Zip: 28547- Phone: 910-451-2213, Fax. 910-451-2927, Email: NEAL.PAUL@USMC.MIL Physical Location STONE STREET Provided Existing Permits related to this Proiect SW _ SW _ SW _ NPDES= NPDES WQ WQ E&S _ E&S _ Other I1 Project Drains into NORTHEAST CREEK waters - Water classification SC, NSW, HQ W (for classification see- http://portal.ncdenr.org/web/wq/ps/csu/classifications Project Located in WHITE OAK River Basin, Is project draining to class ORW waters? N, within A mile and draining to class SA waters N or within 1 mile and draining to class HOW waters? N Engineer/Consultant J. KEVIN AVOLIS. PE Company. AVOLIS ENGINEERING PA Address: P.O. BOX 15564 City: NEW BERN, Slate: NC Zip: 28561- Phone: 252-633-0068, Fax: _ _ Email: avolisengineering@embargmail.com PLEASE PROVIDE ESTIMATED INVESTMENT AND EXPECTED EMPLOYMENT, IF AVAILABLE U0 MAY 2 3 2018 $_ # JOBS SECTION ONE: REQUESTING A SCOPING MEETING ONLY ❑ Scoping Meeting ONLY ❑ DWQ, ❑ DCM, ❑ DLR, ❑ OTHER: SECTION TWO: CHECK ONLY THE PROGRAM (S) YOU ARE REQUESTING FOR EXPRESS PERMITTING ❑ 401 Unit ❑ Stream Origin Determination: _ # of stream calls - Please attach TOPO map marking the areas in questions ❑ Intermittent/Perennial Determination: _ # of stream calls - Please attach TOPO map marking the areas in questions ❑ 401 Water Quality Certification ❑ Isolated Welland (_linear it or _acres) ❑ Riparian Buffer Authorization ❑ Minor Variance ❑ Major General Variance ® State Stormwater ❑ General ❑ SFR, ❑ SFR < 1 ac. ❑ Bkhd & Bt Rmp, ❑ Clear & Grub, ❑ Utility ❑ Other ❑ Low Density ❑ Low Density -Curb & Gutter _ # Curb Outlet Swales ❑ Off -site [SW (Provide permit #)] ❑ High Density -Detention Pond _ # Treatment Systems ❑ High Density -Infiltration _ #Treatment Systems ❑ High Density -Bio-Retention # Treatment Systems ❑ High Density -SW Wetlands _ # Treatment Systems ❑ High Density -Other _ # Treatment Systems /❑ MOD:[-] Major ® Minor ❑ Plan Revision ❑ Redev. Exclusion SW 8960329 (Provide permit #) ❑ Coastal Management ❑ Excavation & Fill ❑ Bridges & Culverts ❑ Structures Information ❑ Upland Development ❑ Marina Development ❑ Urban Waterfront ® Land Quality ® Erosion and Sedimentation Control Plan with 1.1 acres to be dislurbed.(CK # (for DENR use)) SECTION THREE - PLEASE CHECK ALL THAT IS APPLICABLE TO YOUR PROJECT (for both scoping and express meeting request) Wetlands on Site ❑ Yes ® No Buffer Impacts: ® No ❑ YES: _acre(s) Wetlands Delineation has been completed: ® Yes ❑ No Isolated wetland on Property ❑ Yes ® No US ACOE Approval of Delineation completed: ❑ Yes ® No 404 Application in Process w/ US ACOE: ❑ Yes ® No Permit Received from US ACOE ❑ Yes ® No For DENR use onk _ Fee Solit for multiple oermits: (Check# 1 Total Fee Amount SUBMITTAL DATES Fee SUBMITTAL DATES Fee CAMA S Variance (❑ Maj; El Min) S SW (❑ HD, ❑ LD, ❑ Gen) S 401: S LDS S Stream Deter— 5 NCDENR EXPRESS January 2014 Stormwater Narrative Design Additional Patient Parking, Area D, NH100 Marine Corps Base Camp Lejeune, NC Contract Number N40085-18-13-0028 Marine Corps Base Camp Lejeune, North Carolina is proposing to make a parking lot addition on the southern side of the Naval Hospital Complex to increase patient parking capacity. The parking lot expansion will occur as an extension of an existing parking lot area that was constructed in 1996. The project will occur in one drainage area as permitted under existing Stormwater Permit SW8 960329. Runoff will occur through Drainage Area "West Pond" of the Naval Hospital complex. Runoff from Drainage Area "West Area" drains to the existing stormwater retention pond "West Pond". As a part of this project, the existing stormwater pond will be enlarged to provide the required storage volume associated with the increased BUA and expanded drainage basin area associated with this project. The modified basin was resized utilizing the current Stormwater Rules and a 1.5-inch design storm for all existing and new BUA. The project drains to Northeast Creek which is located in the White Oak River Basin. Northeast Creek has a Surface Water Classification of SC, NSW, HQW and a Stream Index of 19 — 16 — (3.5). No wetlands or stream buffer areas are located within the proposed projects limits of disturbance. �a mB. a S,. aA �w I avm ma: K4�aa�...� a ta�a,R.m.a.m�.mHI.—,..� v ' / / J� AA.,... .10 • E%ISHAG SiORMATER BRAD \ TO BE ENtARGEG- SEE SHEET OGIB)v\ / S. H,— nmu a.+e nwi. '� V A V Os a Mnwaz rur a[ S. [ s T ami. (_aj u. rutuw�urrws amua�+m ab�. II Swrz. / \ r.- s LINIiG OF OIsTURUAYCEJ \`, 18526ST.043ACRE5 --^-- — ®®® _ — Ex, PAMBG �Jry' 11vU5 OF EB.. 34n'CE 31326 ST. 0. 12 ACRES -0' l.i 7 /.Et_ swPzs, ZbS--�-_ - — — —_— _ter--A- --� csiol is o _ �NARI��E CORPS BASE nicxwi.aw �:a _ ABBASr. -UEJEUNE WavE [o4>9 onsEua"LEJEWE s rtwSn�� rM9ruR1 .mom o g m ti�55 SHE RA, tA1 ,H b SMITBIG v — — ro R0.in17 V0 N �O�¢. SqM [UQ'�M W 9l@-4'] uttrp'!j rtiWmVrt[F wAac4M N 91H �m.T.C�w.tm M ••e m F BM9 ` b]O)14� v 0�iir wnlm C N(<q r X4 •1 ',l /Y, COv Ty2m111 - I p .9 ) TRFECE D /BIYDR fFp\ E55 "';p'nr+.4 `13 99f.o_.CI� `' 11.'�Vjt. r IEJFfIIJE � �!'+�.,� j*.�. s— at,� r � c SW 1J d Q . '1 C4j O ^H4IDLCNROpN CIR �'�`^'2" 11 \ fq REEK N RTHEAStGRE 25: Parr k q, J 3 ilS (p y a 11\\ i tics \ eLr } SITE A FA \ P \ J fju�� - I - ` V b BREWS 1 , , p X Q N< ,� -- �JI�I ! 1 Cps f _ - / ! •�: 9 p S MARYt AK. /t.� '� /�� -, SV• vE N NEIV UC � { h �Rth cr c / DRC6CN 51 V1 Y� pL0UI51AAA9 � � ij p, _ 1 flvi 4 pp � _ i�-may t'...• � '9'el5}.' ., At J.� 'D:.'' wit AVOLIS ENGINEERING, P.A. USES TOPOGRAPHIC IAAP Civil and Environmental Engineering DESIGN ADDITIONAL PATIENT PARKING, AREA D, NH!00 P.O. BOX 15554 NEW BERG:, NORTH CAROLINA 28551 MARINE CORPS BASE, CAMP LEJEU\'E, NC PHONE: (252) 533 0068 avo1isengineeriog@emna gma.I mm CONTRACT N0. N4DO85 18-B 0028 LICENSE NO C 0706 Weaver, Cameron From: Avolis Engineering, P.A. <avolisengineering@embargmail.com> Sent: Tuesday, May 22, 2018 3:51 PM To: Weaver, Cameron Cc: David W Towler; Brandon A Williams Subject: [External] Proj 18-0028 - Design Additional Patient Parking, Area D, NH100 Attachments: 18-0028_Request for Express.pdf; 18-0028_Stormwater Narrative.pdf; NH100_SITE PLAN.pdf, NH100-USGS MAP.pdf Good Afternoon Cameron! Please find attached our Request for Express Permit Review consisting of the following: Request for Express Form Narrative USGS Map Site Plan Thanks and have a great day! Beth Simmons Avolis Engineering, PA 252.633.0068 t �t.lc4cxe:� �Vow\ w"— m I cy��a.c� IE z ev,CAe� kD _ J vp �U,to AM a i lEJ ni \ 4��J. l5 VC < f C4 o' ( \ r U IDIILRWR CIR Y REEK,\ 0T C ,r ` 80 Midway Park" g s A� SITE . 2y Fyn\ 1 . ro a - BRENNSTERBLVD. o w uq ,Iµ N - x O a. NARnUND AVE v _ MELY�l11.00 ,a �, 11 ATE' ORfCox ST o^ Wall IMA ST �DEUW MAVF AVOLIS ENGINEERING, P.A. USGS TOPOGRAPHIC MAP Civil and Environmental Engineemg DESIGN ADDITIONAL PATIENT PARIONG, AREA D, NH10D P.O. BOX 15564 NEW BERN, NORTH CAROLINA 28561 MARINE CORPS BASE, CAMP LEJEUNE, NO CONTRACT NO. N40085-18-8-0028 PHONE.(252) 633-0068 avolimngineenng@embargmail.tom IIN LICENSE NO. C-0706 10 2018 BY: