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HomeMy WebLinkAboutSW8060147_CURRENT PERMIT_20100614STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO. SW8 bCpo t 4% DOC TYPE ® CURRENT PERMIT, ❑ APPROVED PLANS ❑ HISTORICAL FILE ❑ COMPLIANCE EVALUATION INSPECTION DOC DATE YYYYMMDD DWQ USE ONLY Date Received Pee Paid Permit Number zZ - W 0 ,°P G� >� Applicable Rules: ❑ Coastal SW -1995 ❑ Coastal SW - 2008 ❑ Ph 11- Post Construction (select all that apply) ❑ Non -Coastal SW- HQW/ORW Waters ❑ Universal Stormwater Management Plan ❑ Other WQ M mt Plan: State of North Carolina I-'e1J;C E1V1— Department of Environment and Natural Resources JUN 14 2010 Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATIO I7tis form may be photocopied far use as an original L 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.): Midway Park Child DcvelgMment Center 2. Location of Project (street address): Building LCH4002. 4th ,Street _ City:Midway Park County:Onslow Zip:28544 3. Directions to project (from nearest major intersection): Heading Soijth/ Ast on North Carolina Stale Road Z_4_ turn left on Butler Drive N. The project is at the corners of 3rd and 4th Street on Butler, 4. Latitude:3V 43' 39" N Longitude:77° 20' 19".W of the main entrance to the project. II. PERMIT INFORMATION: 1, a. Specify whether project is (check one): DNeW DModification b. If this application is being submitted as the result of a modification to an existing permit, list the existing permit number , its issue date (if known)_ and the status of construction: ENot Started QPartially Completed* ❑ Completed" *provide a designer's certification 2. Specify the type of project (check one): OLow Density OHigh Density ❑Drains to an Offsite Stormwater System ❑Other 3. If this application is being submitted as the result of a previously returned application or a letter from DWQ requesting a state stormwater management permit application, list the stormwa ter project number, if assigned, N/A and the previous name of the project, if different than currently proposed, NIA 4. a. Additional Project Requirements (check applicable blanks; information on required state permits can be obtained by contacting the Customer Service Center a t 1-877-623-6748): OCAMA Major ❑sedimentation/Erosion Control: 5.09 ac of Disturbed Area ❑NPDES Industrial Stormwater 11404/401 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: — Dorm SW-101 Version 14May2010 Page 1 of 6 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/Organi7alion:Commanding Officer, USMCB Camp Lejeune Signing Official & Tide:Baker—D-muty Public WolU Officer b. Contact information for person listed in item 1a above: Street Address: B1de 1005 Michael Rd. Cily:Cai pLejeune ___ Stale: Zip: Mailing Address (if applicable):Bld2 0Q5 Michael Rd„ _ City:Camn LcieuneState:NC Zip:28542 Phone: f9[0 ) 45t-2213 _ Fax: (910 ) _451-2927 EmaiL•carl.h.baker(Rusme.mil c. Please check the appropriate box. The applicant listed above is: El The properly 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 beIow) ❑ 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/Organization: Same as above Signing Official & Title: b. Contact information for person listed in item 2a above: Street Address: City: Mailing Address (if applicable): City: Phone: L_ Email: State: Zip: State: Zip. -- Fax: L- 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/ Organ i7ation: Phil Gambrell/Luckca & Farley _ T Signing Official & Title: b.Contact information for person listed in item 3a above: Mailing Address:737 SQUIh Third Street City:Louisville _ State:KY Zip:40202 Phone: (502 ) 585-4181 _ Fax: (502_ ) 587-0488 Email:12gambreil(@Iuckctt-faricy.com Form SWU-101 Version 14May2010 Page 2 of 8 RECEIVED JUN 14 2010 BY: 4. Local jurisdiction for building permits: Point of Contact: IV. PROJECT INFORMATION Phone #: L _ �^ 1. In the space provided below, briefly summarize how the stormwater runoff will be treated. Two (2) wet detention basin BMPs will treat stormwaterrunoff from_theChild Development Center Buildings, and 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. Identify the regulation(s) the project has been designed in accordance with: ❑ Coastal SW -1995 ❑ Ph 11 - Post Construction 3. Stormwater runoff from this project drains to the White Oak River basin. 4. Total Property Area: 5.09 acres 5. Total Coastal Wetlands Area: acres 6. Total Surface Water Area: acres 7. Total Properly Area (4) - Total Coastal Wetlands Area (5) - Total Surface Water Area (6) = Total Project Area': 5.09 acres Total project area shall be calculated to exclude the following the normal pool of impounded structures, the area h between the banks of streams and rivers, the area below the Normal High Water (N line or Mean High Water (MHW) line, and coastal wetlands landward frorn the NHW (or MHM line. The resultant project area is used to calculate overall percent built upon area (BLIA). Non -coastal wetlands landward of the NHW (or MHW) line may be included in the total project area. S. Project percent of impervious area: (Total Impervious Area / Total Project Area) X 100 = 40.4 % 9. How many drainage areas does the project have?2 (For high density, count 1 for each proposed engineered stormwaler BMP. For low density and other projects, use 1 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. RECEIVED JUN 14 2010 -BY.- Form SWU-101 Version MMayM 10 Page 3 of 8 4. Local jurisdiction for building permits: Point of Contact: Phone #: IV. PROJECT INFORMATION 1. In the space provided below, briefly summarize low the stormwater runoff will be treated. (2) Wet detention pond BMPs will treat all runoff from the Child Development Center Buildings, nd associated parking lots. 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: ElValid Building Permit Issued Date: ❑ Other: Date: b.Identify the regulations) the ro]'ect has been designed in accordance with: ® Coastal SW —1995 � Ph it — Post Construction 3. Stormwater runoff from this project drains to the White Oak River basin, 4. Total Property Area: 5.09 acres 5. Total Coastal Wetlands Area: acres 6. Total Surface Water Area: acres 7. Total Property Area (4) — Total Coastal Wetlands Area (5) — Total Surface Water Area (6) = Total Project Area`: 5.09 acres Total project area shall be calculated to exclude the follozoing the normal pool of impounded structures, the area between the banks of streams and rivers, the area belozo the Normal High Water (NHW) line or Mean High Water (MHW) line, and coastal wetlands landward front the NHW for MHW) line. The resultant project area is used to calculate overall percent built upon area (BI..IA). Non -coastal wetlands landward of the NHW (or MHW) line may be included in the total project area. 8. Project percent of impervious area: (Total Impervious Area / Total Project Area) X 100 = 51.1 o� 0 9. How many drainage areas does the project gave?2 (For high density, count 1 for each proposed engineered Stormwater BMP. For low density and other projects, use 1 for the whole property area) 10. Complete the following information for each drainage area identified in Project Information item 9, If there are more than four drainage areas in the project, attach an additional sheet with the information for each area provided in the same format as below. Basin Information Drainage Area 1 Drainage Area 2 Drainage Area _ Drainage Area Receiving Stream Name MOTT CREEK MOTT CREEK Stream Class * QNSW QNSW Stream Index Number * 19-16-3 19-16-3 Total Drainage Area (sf) 117,091 63,198 On -site Drainage Area (sf) 117,091 63,198 O -site Drainage Area (s) - - Proposed Impervious Area** (sf) 69,235 12,148 % Impervious Area" (total) 59.13 62.39 Im ervious" Surface Area Drainage Area _ Drainage Area Drainage Area _ Drainage Area On -site Buildings/Lots (sf) 19,517 12,148 On -site Streets (sf) - - On -site Parking (sf) 42,802 - On -site Sidewalks (sf) 6,916 ' Other on -site (s) - - Future (s) - Off -site (sf) - - Existing BUA*** (sf) - 27,279 To sf}: 69,235 39,427 * Stream Class and Index Number can be determined at., lrttlJ/��rtrtl.rncier�r.ot;q/zuch[zurl/ps/cri_(zssificrttiofnsForm SWU-101 Version 14May2010 Page 3 of 6 JUL 4 9 2010 �- -- -1. Permit application processing fee of $505 payabte to NCDENR. (For an Express review, refer to hlto:/ /www.envhelp.org f napes/onestol2exi2ress.htmi 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/management for 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'/s mile of the site boundary, include the 1/2 mile radius on the map. 7. Sealed, signed and dated calculations. 4. 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. Seale. 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. j. Site Layout with all BUA identified and dimensioned. k. Existing contours, proposed contours, spot elevations, finished floor elevations. 1. Details of roads, drainage features, collection systems, and stormwater control measures. m. Wetlands delineated, or a note on the plans that none exist. (Must be delineated by a qualified person. Provide documentation of qualifications and identify the person who made the determination on the plans. n. Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations. o. Drainage areas delineated (included in the main set of plans, not as a separate document). p. Vegetated buffers (where required). 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"x11" 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: Scl►edule a site visit for DWQ to verify the SHW1' prior to submittal, (970) 796-7378.) 10. A copy of the most current property deed. Deed book: N/A Page No: NIA 11. For corporations and limited liability corporations (LLC): Provide documentation from the NC Secretary of Slate or other official documentation, which supports the titles and positions held by the persons listed in Contact Information, item la, 2a, and/or 3a per NCAC 2H.1003(e). The corporation or LLC must be listed as an active corporation in good standing with the NC Secretary of Stale, otherwise the application will be returned. hlt www.%c-creta .Etate.nc.us Cor rations C-Search.as x RECEIVED JUN 14 2010 BY: Form SWU-101 Version 14May2010 Page 5 of 8 -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 httl2://ILortal.ncdenr.orglweb/wq/ws/su/statesw /forms does. Download the latest versions for each submittal. In the instances where the applicant is different than the property owner, it is the responsibility of the, property owner to sign the deed restrictions and protective covenants form while the applicant is responsible for ensuring that the deed restrictions are recorded. By the notarized signature(s) below, the permit holder(s) certify that the recorded property restrictions and protective covenants for this project, if required, shall include all the items required in the permit and listed on the forms available on the website, that the covenants will be binding on all parties and persons claiming under them, that they will run with the land, that the required covenants cannot be changed or deleted without concurrence from the NC DWQ, and that they will be recorded prior to the sale of any Iot. 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:fhil Gambrell Consulting Firm: Luckett & Farley Mailing Address:737 South Third Street _ City: Louisville Sta te: KY Zip:40202 Phone: (502 585-4181 Fax: (502 1 587-0488 Email:pgambrellQluckett-farlc .cam IX. PROPERTY OWNER AUTHORIZATION (if Contact Infor►nation, item 2 has been filled out, complete this section) I, (print or type name of person listed in Contact Information, item 2a) _..__ _ certify that 1 own the property identified in this permit application, and thus give permission to (print or type name of person Iisted in Contact Information, item 1a) _ with (print or type name of organization listed in Contact Information, item Ia) to develop the project as currently proposed. A copy of the lease agreement or pending properly sales contract has been provided with the submittal, which indicates the party responsible for the operation and maintenance of the stormwater system. FJU IVED 4 2�10: Form SWU-101 Version 14May2010 Page 6 of 8 -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 DWQ Stormwater permit reverts back to me, the property owner. As the property owner, it is my responsibility to notify DWQ immediately and submit a completed Name/Ownership Change Form within 30 days; otherwise 1 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: a Notary Public for the State of _ County of do hereby certify that personally appeared before me this _ day of and acknowledge the due execution of the application for a stormwater permit. Witness my hand and official seal, SEAL My commission expires RECEIVED JUN 14 2010 BY: Form SWU-101 Version 14May2010 Page 7 of 8 X. APPLICANT'S CERTIFICATION I, (print or type narne of person listed in Contact Information, item 1a) Carl Baker, Deau& Public Works Officer certify that the information included on this perm it 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 stormrWter rulesVnder 15A NCAC 21-1.1000, SL 2006-246 (Ph. lI - Post Construction) or SL 2008-211. Signatu Date: 6 - / 40 1, - & /✓�/J/ _ , a Notzz�"144'- Public for the State of /"Cii// e/% XX ' � . County of do hereby certify that ^ personally appeared before me this day of ,i� �� . and aaccknnowlee ge the duce execution of the application for a 61 stormwater permit. Witness my hand and official seal, Gam' ALICE A BONNETTE Notary Public OnS1OW County Stole Of North Carolina My COmrnleelon Expires Oct 23. 2010 SEAL My commission expires RECEIVED JUN 14 2010 BY: Form SWU-101 Version 14May2010 Page 8 of 8 WA coLLiwInjou ExhlteI ()c4 57, 30l J 210lo vl "atlU Catol,ua F` 1' UZICrn C,O,-SUTA �104VIA bnpllr V!lCF, V 8QY4KHE Permit No. a.a(A) ?O&v (Io be provided by DWQ) � v. � ��O�OF W AT �9QG .� � r NCDENR a STORMWATER MANAGEMENT PERMIT APPLICATION FORM 401 CERTIFICATION APPLICATION FORM WET DETENTION BASIN SUPPLEMENT This form must be filled out, printed and submitted. The Required Items Checklist (Part 111) must be printed, filled out and submitted along with all of the required information. I. PROJECT INFORMATION Project name Midway Park - Child Development Center Contact person Phil Gambrell Phone number 502-585-4181 Date 717/2010 Drainage area number 2 (West Pond) IL DESIGN INFORMATION Site Characteristics Drainage area 63,198 fe Impervious area, post -development 39,427 ff % impervious 62.39 % Design rainfall depth 1.5 in Storage Volume: Non -SA Waters Minimum volume required 4.831 ft3 Volume provided 5,132 ft3 Storage Volume: SA Waters 1.5" runoff volume ft3 Pre -development 1-yr, 24-hr runoff ft3 Post -development 1-yr, 24-hr runoff ft3 Minimum volume required ft3 Volume provided ft3 Peak Flow Calculations Is the pre/post control of the 1yr 24hr storm peak flow requin y (Y or N) OK OK, volume provided is equal to or in excess of volume requin 1-yr, 24-hr rainfall depth 3.6 in Rational C, pre -development 0.15 (unitless) Rational C, post -development 0.65 (unitless) Rainfall intensity: 1-yr, 24-hr storm 0,15 inlhr OK Pre -development 1-yr, 24-hr peak flow 0,03 ft3isec Post -development 1-yr, 24-hr peak flow 0.15 ft3/sec Pre/Post 1-yr. 24-hr peak flow control 0.11 ft3lsec Elevations Temporary pool elevation Permanent pool elevation SHWT elevation (approx. at the perm, pool elevation) Top of 1 Oft vegetated shelf elevation Bottom of 10ft vegetated shelf elevation Sediment cleanout, top elevation (bottom of pond) Sediment cleanout, bottom elevation Sediment storage provided Is there additional volume stored above the state -required temp. pool? Elevation of the top of the additional volume Farm SW401-Wet Detention Basin-Rev.6-9117/09 28,30 fmsl 27.50 fmsl 27.75 fmsl 28.00 fmsl 27.00 fmsl 22.00 fmsl 21,00 fmsl 1.00 ft n (Y or N) fmsl JUL 0 9 2410 i � •. Parts I. & II. Design Summary. Page 1 of 2 ` + Permit No. (to be provided by DWQ) II. DESIGN INFORMATION Surface Areas Area, temporary pool 7,421 ft2 Area REQUIRED, permanent pool 5119 ft2 SAIDA ratio 8.10 (unitless) Area PROVIDED, permanent pool, P0,,,,_p1 5,408 ft2 OK Area, bottom of 1 Oft vegetated shelf, P6nt shelf 3,991 ft2 Area, sediment cleanout, top elevation (bottom of pond), 313 ft' Volumes Volume, temporary pool 5,132 ft3 OK Volume, permanent pool, VpefmyOO, 10,820 ft' Volume, forebay (sum of forebays if more than one forebay) 2,049 ft3 Forebay % of permanent pool volume 18.9% % OK SAIDA Table Data Design TSS removal 90 % Coastal SAIDA Table Used? y (Y or N) Mountain/Piedmont SAIDA Table Used? (Y or N) SAIDA ratio 8.10 (unitless) Average depth (used in SAIDA table): Calculation option 1 used? (See Figure 10-2b) n (Y or N) Volume, permanent pool, Voefm-pool 10,820 ft3 Area provided, permanent pool, P%efm-pnn, t2Average depth calculated ft N(Y OK Average depth used in SAIDA, dd,,, (Round to nearest 0 ft OKCalculation option 2 used? (See Figure 10-2b) or N) Area provided, permanent pool, Pp,.-P., 5,408 ft' Area, bottom of 10ft vegetated shelf, PWt she„ 3,991 ft2 Area, sediment cleanout, top elevation (bottom of 313 ft2 pond), Ahot_ond "Depth" (distance b/w bottom of 10ft shelf and top of se 5,00 ft Average depth calculated 3.13 ft OK Average depth used in SAIDA, dd , (Round to nearest 0 3.0 ft OK r Drawdown Calcutations Drawdown through orifice? Diameter of orifice (if circular) Area of orifice (if -non -circular) Coefficient of discharge (CD) Driving head (Hn) Drawdown through weir? Weir type Coefficient of discharge (C.) Length of weir (L) Driving head (H) Pre -development 1-yr, 24-hr peak flow Post -development 1-yr, 24-hr peak flow Storage volume discharge rate (through discharge orifice or weir) Storage volume drawdown time Additional Information Vegetated side slopes Vegetated shelf slope Vegetated shelf width Length of flowpath to width ratio Length to width ratio Trash rack for overflow & orifice? Freeboard provided Vegetated filter provided? Recorded drainage easement provided? Capures all runoff at ultimate build -out? Drain mechanism for maintenance or emergencies is: Form SW401-Wet Detention Basin-Rev.8-9117109 y (Y or N) 1.25 in in 0.59 }unitless 0.27 ft n (Y or N) (unitless) (unitless) ft ft 0.03 ft3/sec 0.15 ft3Isec 0.02 ft /sec 2.85 days OK, draws down in 2-5 days. 3 :1 OK 10 :1 OK 10.0 ft OK 3 :1 OK 3.0 :1 OK n (Y or N) Trash rack or similar device recommended. 1.0 ft OK n (Y or N) OK n (Y or N) Insufficient. Recorded drainage easement required. n (Y or N) Required to capture all runoff from the ultimate build -out nla M-IL 0 a 2010 Parts I. & II. Design Summary, Page 2 of 2 BY: Permit No- sw lD(2� " ` 4-�- (to be provided by D WQ) APA Oa OG NCDENR Y STORMWATER MANAGEMENT PERMIT APPLICATION FORM 401 CERTIFICATION APPLICATION FORM WET DETENTION BASIN SUPPLEMENT This form must be filled out, printed and submitted. The Required Items Checklist (Part 111) must be printed, filled out and submitted along with all of the required information. I. PROJECT INFORMATION Project name Midway Park - Child Development Center Contact person Phll Gambrell Phone number 502-585-4181 Date 7/812010 Drainage area number 1 (East Pond) II. DESIGN INFORMATION Site Characteristics Drainage area 117.091 ft Impervious area, post -development 69,235 fe % impervious 59.13 % Design rainfall depth 1.5 in Storage Volume: Non -SA Waters Minimum volume required 8,521 fta OK Volume provided 9,303 fta OK, volume provided is equal to or in excess of volume requin Storage Volume: SA Waters 1.5" runoff volume fta Pre -development 1-yr, 24-hr runoff ffa Post -development 1-yr, 24-hr runoff fta Minimum volume required fta Volume provided fta Peak Flow Calculations Is the prelpost control of the 1yr 24hr storm peak Flow requin y (Y or N) 1-yr, 24-hr rainfall depth 3.6 in Rational C, pre -development 0.15 (unitless) Rational C, post -development 0.66 (unitless) Rainfall intensity: 1-yr, 24-hr storm 0.15 inlhr OK Pre -development 1-yr, 24-hr peak flow 0.06 ftaisec Post -development 1-yr, 24-hr peak flow 0.27 ftaisec PrelPost 1-yr, 24-hr peak flow control 0,21 ftaisec Elevations Temporary pool elevation Permanent pool elevation SHWT elevation (approx. at the perm. pool elevation) Top of 1 Oft vegetated shelf elevation Bottom of 10ft vegetated shelf elevation Sediment cleanout, top elevation (bottom of pond) Sediment cleanout, bottom elevation Sediment storage provided Is there additional volume stored above the state -required temp. pool? Elevation of the top of the additional volume Form SW401-Wet Detention Basin•Rev.8-9117109 30.90 fmsl 30.00 fmsl 30.16 fmsl 30.50 tmsl 29.50 fmsl 24.00 fmsl 23.00 fmsl 1.00 ft n (Y or N) fmsl +;ry JUL Parts 1. 8 II. Design Summary. Page 1 of 2 Permit No. (to be provided by DWQ) II. DESIGN INFORMATION Surface Areas Area, temporary pool 11,785 fe Area REQUIRED, permanent pool 8.196 ft, SAIDA ratio 7.00 (unitless) Area PROVIDED, permanent pool, Apem,001 8,890 1? OK Area, bottom of 16ft vegetated shelf, A., sneer 7,041 fe Area, sediment cleanout, top elevation (bottom of pond), 402 ft' Volumes Volume, temporary pool 9,303 ft3 OK Volume, permanent pool, Vp�rm_poci 18,503 ft3 Volume, forebay (sum of forebays if more than one forebay) 3,904 ft3 Forebay % of permanent pool volume 21.1% % OK SAIDA Table Data Design TSS removal 90 % Coastal SAIDA Table Used? y (Y or N) Mountain/Piedmont SAIDA Table Used? (Y or N) SAIDA ratio 7,00 (unitless) Average depth (used in SAIDA table): Calculation option 1 used? (See Figure 10-2b) n (Y or N) Volume, permanent pool, V n,,_poo, N, 18 50 ft3 Area provided, permanent pool, Pyerm-pool 90 fe Average depth calculated 43. Average depth used in SAIDA, day, (Round to nearest 0 3. f Calculation option 2 used? (See Figure 10-2b) �_(Y or N) Area provided, permanent pool, Ppe,,,,_poo, 8,890 fe Area, bottom of 1 Oft vegetated shelf, Pbnt swf 7,041 W Area, sediment cleanout, top elevation (bottom of 402 fe pond), Ab„_,e "Depth" (distance b/w bottom of 1 Oft shelf and top of se- 5.50 ft Average depth calculated 3.35 ft Average depth used in SAIDA, d,,,, (Round to nearest 0 .3 ft Drawdown Calculations Drawdown through orifice? Diameter of orifice (if circular) Area of orifice (if -non -circular) Coefficient of discharge (Co) Driving head (He) Drawdown through weir? Weir type Coefficient of discharge (C„,) Length of weir (L) Driving head (H) Pre -development i-yr, 24-hr peak flow Post -development 1-yr, 24-hr peak flow Storage volume discharge rate (through discharge orifice or weir) Storage volume drawdown time Additional Information Vegetated side slopes Vegetated shelf slope Vegetated shelf width Length of flowpath to width ratio Length to width ratio Trash rack for overflow & orifice? Freeboard provided Vegetated filter provided? Recorded drainage easement provided? Capures ail runoff at ultimate build -out? Drain mechanism for maintenance or emergencies is: Form SW4C1-Wet Detention Basin-Rev,8-91171Q9 y (Y or N) 1.75 in in' 0.59 }unitless 0.27 ft n (Y or N) (unitless) (unitless) ft ft 0.06 ft/sec 0.27 ft/sec 0.04 ft/sec 2.19 days 3 :1 10 :1 10.0 ft 3 :1 3.3 :1 n (Y or N) 1.0 ft n (Y or N) n (Y or N) n (Y or N) n1a V OK OK 3 S ems' h CK OK,3� 1 1� OK, draws down in 2-5 days. OK OK OK OK OK Trash rack or similar device recommended. OK OK Insufficient, Recorded drainage easement required. Required to capture all runoff from the ultimate build -out F11��.1f� V✓�J JUL 0 9 2010 Parts I. & II. Design Summery, Page 2 of 2 Pc rmit Number: 41- 7 (to he provided by D VQ) Drainage Area Number: — 2 Wet Detention Basin Operation and Maintenance Agreement I will keep a maintenance record on this BMP. This maintenance record will be kept in a log in a known set location. Any deficient BMP elements noted in the inspection will be corrected, repaired or replaced immediately. These deficiencies can affect the integrity of structures, safety of the public, and the removal efficiency of the BMP. The wet detention basin system is defined as the wet detention basin, O� pretreatment including forebays and the vegetated filter if one is provided. This system (check one): f�j� �Df1V ❑ does 91 does not incorporate a vegetated filter at the outlet. This system (check one): ❑ does 0 does not incorporate pretreatment other than a forebay, Important maintenance procedures: - Immediately after the wet detention basin is established, the plants on the vegetated shelf and perimeter of the basin should be watered twice weekly if needed, until the plants become established (commonly six weeks). - No portion of the wet detention pond should be fertilized after the first initial fertilization that is required to establish the plants on the vegetated shelf. -- Stable groundcover should be maintained in the drainage area to reduce the sediment load to the wet detention basin. - If the basin must be drained for an emergency or to perform maintenance, the flushing of sediment through the emergency drain should be minimized to the maximum extent practical. - Once a year, a dam safety expert should inspect the embankment. After the wet detention pond is established, it should be inspected once a month and within 24 hours after every storm event greater than 1.0 inches (or 1.5 inches if in a Coastal County). Records of operation and maintenance should be kept in a known set location and must be available upon request. Inspection activities shall be performed as follows. Any problems that are found shall be repaired immediately. BMP element. Potentialproblem: How I will remediate the problem - The entire BMP Trash debris is present. Remove the trash/debris. The perimeter of the wet Areas of bare soil and/or Regrade the soil if necessary to detention basin erosive gullies have formed. remove the gully, and then plant a ground cover and water until it is established. Provide lime and a one-time fertilizer application. Vegetation is too short or too Maintain vegetation at it height of long. a pproximaiel six inches. Form SW401-Wet Detention Basin O&M-Rev.4 Page I of`5 Permit Number: (to be provided by DWQ) Drainage Area Number: BMP element: Potential roblem How I will remediate theproblem: The inlet device: pipe or The pipe is clogged. Unclog the pipe. Dispose of the Swale sediment off -site. The pipe is cracked or Replace the pipe. otherwise damaged. Erosion is occurring in the Regrade the swale if necessary to swale. smooth it over and provide erosion control devices such as reinforced turf matting or riprap to avoid future problems with erosion. The forebay Sediment has accumulated to Search for the source of the a depth greater than the sediment and remedy the problem if original design depth for possible. Remove the sediment and sediment storage. dispose of it in a location where it will not cause impacts to streams or the BMP. Erosion has occurred. Provide additional erosion protection such as reinforced turf matting or riprap if needed to prevent future erosion problems. Weeds are present. Remove the weeds, preferably by hand. If pesticide is used, wipe it on the plants rather than spraying. The vegetated shelf Best professional practices Prune according to best professional show that pruning; is needed practices to maintain optimal plant health. Plants are dead, diseased or Determine the source of the dying. problem: soils, hydrology, disease, etc. Remedy the problem and replace plants. Provide a one-time fertilizer application to establish the ground cover if a soil test indicates it is necessary. Weeds are present. Remove the weeds, preferably by hand. If pesticide is used, wipe it on the plants rather than spraying. The maim treatment area Sediment has accumulated to Search for the source of the a depth greater than the sediment and remedy the problem if original design sediment possible. Remove the sediment and storage depth, dispose of it in a location where it will not cause impacts to streams or the BMP. Algal growth covers over Consult a professional to remove 50% of the area. and control the algal growth. Cattails, phragmites or other Remove the plants by wiping them invasive plants cover 50% of with pesticide (do not spray). the basin surface. RECEIVED Fonn JuN 14 2010 SW401-Wet Detention Basin O&M-Rm,.4 Page 2 of 5 BY: Permit Number: (to be provided by DWQ) Drainage Area Number: BMP element: Potential proble= How I will remediate theproblem: The embankment Shrubs have started to grow Remove shrubs immediately. on the embankment. Evidence of muskrat or Use traps to remove muskrats and beaver activity is present. consult a professional to remove beavers. A tree has started to grow on Consult a dam safety specialist to the embankment. remove the tree. An annual inspection by an Make all needed repairs. appropriate professional shows that the embankment needs repair. (if a licable) The outlet device Clogging has occurred. Clean out the outlet device. Dispose of the sediment off -site. The outlet device is damaged Repair or replace the outlet device. The receiving water Erosion or other signs of Contact the local NC Division of damage have occurred at the Water Quality Regional Office, or outlet. the 401 Oversight Unit at 919-733- 1796. The:measuring device used to determine the sediment elevation shall be such that it will give an accurate depth reading and not readily penetrate into accumulated sediments. When the permanent pool depth reads _1__ feet in the main pond, the sediment shall be removed. When the permanent pool depth reads 4•0 feet in the forebay, the sediment shall be removed. BASIN DIAGRAM (fill in the blanks) Sediment Removal 26.00 �P anen ------- Volume Bottom Elevation -ft Min. Sediment Storage Sediment Form SW401-Wet Detention Basin O&M-Rev.4 Permanent Pool Elevation 30.00 Pool Sediment Removal Elevation 24.00 ----ou—me -------------------- --- Bottom Elevation 23.00 I -ft Min. RECEIVED JUN 14 2010 BY: Page 3 of 5 Permit Number: (to be provided byDWQ) Drainage Area Number: Storage FORF.BAY MAIN POND JUN 14 2010 Fonn SW401-Wet Detention Basin O&M-Rev.4 Page 4 Of 5 Permit Number: (to be provided by DWQ) I acknowledge and agree by my signature below that I am responsible for the performance of the maintenance procedures listed above. 1 agree to notify DWQ of any problems with the system or prior to any changes to the system or responsible party: Project name:MCB-Camp Leieunc - Child Care Development Center - Midway Park BMP drainage area number:#1_- East Pond Print name:Carl Baker Title:Deputy Public Works Officer Address: Building 1005 Michael Road, MCB Camp Lejeune, NC 28547 Ong Note: The legally responsible party should nut be a homeowners association unless more than 50% of the lots have been sold and a resident'of the subdivision has been named the president. a Notary Public for the State of 114a 41J" County of Q�✓ t , do hereby certify that 'Us personally appeared before me this day of /0 and acknowledge the due execution of the forgoing et detention basin maintenance requirements. Witness my hand and official sea], eo 4�w— AUCE A BONNETTE Notary Public Onslow County State of North Carolina My Commisalon Explres Oct 23. 20 0 DECEIVED JUN 14 MG SEAT. BY: My commission expires Form 5W401-Wet Detention Basin O&M-Rev4 Page 5 of 5 Wh Gouttupaajou Exbl;oi oci SJ'So. G Z:014 ai 4Jo+lij catolluo �. Oc► om ConujA f) yolctA hnptic ,VrICE b 00iVE11£ ; "Sarf'0'r.� •'.'� i. ♦ �r ..1. _ O— 1 . Pemit Ntimhcr: co (to be y�rovi ed by D H"Q ) Drainage Area Number: Z � RSA Wet Detention Basin Operation and Maintenance Agreement I will keep a maintenance record on this BMP. This maintenance record will be kept in a lot; in a known set location. Any deficient BMP elements noted in the inspection will be corrected, repaired or replaced immediately. These deficiencies can affect the integrity of structures, safety of the public, and the removal efficiency of the BMP. The wet detention basin system is defined as the wet detention basin, pretreatment including forebays and the vegetated filter if one is provided. This system (check one): ❑ does 10 does not incorporate a vegetated filter at the outlet. This system (check one): ❑ does �] does not incorporate pretreatment other than a forebay. Important maintenance procedures: — Immediately after the wet detention basin is established, the plants on the vegetated shelf and perimeter of the basin should be watered twice weekly if needed, until the plants become established (commonly six weeks). — No portion of the wet detention pond should be fertilized after the first initial fertilization that is required to establish the plants on the vegetated shelf. — Stable groundcover should be maintained in the drainage area to reduce the sediment load to the wet detention basin. — If the basin must be drained for an emergency or to perform maintenance, the flushing of sediment through the emergency drain should be minimized to the maximum extent practical. — Once a year, a dam safety expert should inspect the embankment. After the wet detention pond is established, it should be inspected once a month and within 24 hours after every storm event greater than 1.0 inches (or 1.5 inches if in a Coastal County). Records of operation and maintenance should be kept in a known set location and must be available upon request. Inspection activities shall be performed as follows. Any problems that are found shall be repaired immediately. BMP element. Potentialproblem: How I will remediate theproblem: The entire BMP Trash debris is Present. Remove the trash debris. The perimeter of the wet Areas of bare soil and/or Regrade the soil if necessary to detention basin erosive gullies have formed. remove the gully; and then plant a x ground cover and water until it is established. Provide time and a one-time fertilizer application. Vegetation is too short or too Maintain vegetation at a height of lon approximately six inches. Form SW401-Wet Detention Basin O&M-Rev.4 RECEIVED JUN 14 2010 BY: Page 1 of 5 Permit Number: (to be provided by DWQ) Drainage Area Number: BMP element: Potential roblem: How I will remediate theproblem: The inlet device: pipe of The pipe is clogged. Unclog the pipe. Dispose of the swale sediment off -site. The pipe is cracked or Replace the pipe. otherwise damaged. Erosion is occurring in the Regrade the swale if necessary to swale. smooth it over and provide erosion control devices such as reinforced turf matting or riprap to avoid future problems with erosion. The forebay Sediment has accumulated to Search for the source of the a depth greater than the sediment and remedy the problem if original design depth for possible. Remove the sediment and sediment storage. dispose of it in a location where it will not cause impacts to streams or the BMP. Erosion has occurred. Provide additional erosion protection such as reinforced turf matting or riprap if needed to prevent future erosion Rroblems. Weeds are present. Remove the weeds, preferably by hand. If pesticide is used, wipe it on the plants rather than s ra in . The vegetated shelf Best professional practices Prune according to best professional show that pruning is needed practices to maintain optimal plant health. Plants are dead, diseased or Determine the source of the dying. problem: soils, hydrology, disease, etc. Remedy the problem and replace plants. Provide a one-time fertilizer application to establish the ground cover if a soil test indicates it is necessary. Weeds are present. Remove the weeds, preferably by hand. 1f pesticide is used, wipe it on the plants rather than spraying. The main treatment area Sediment has accumulated to Search for the source of the a depth greater than the sediment and remedy the problem if original design sediment possible. Remove the sediment and storage depth. dispose of it in a location where it will not cause impacts to streams or the BMP. Algal growth covers over Consult a professional to remove 50% of the area. and control the algal growth. Cattails, phragmites or other Remove the plants by wiping them invasive plants cover 50% of with pesticide (do not spray). the basin surface:. RECEIVED Form SW401-Wet Detention Basin O&M-Rev.4 ,SUN 14 2010 Prue 2 of 5 �Y: Permit Number: (to be provided by DWQ) Drainage Area Number: BMP element- Potentialproblem: How I will remediate theproblem: The embankment Shrubs have started to grow Remove shrubs immediately. on the embankment. Evidence of muskrat or Use traps to remove muskrats and beaver activity is present. consult a professional to remove beavers. A tree has started to grow on Consult a dam safety specialist to the embankment. remove the tree. An annual inspection by an Make all needed repairs. appropriate professional shows that the embankment needs repair. (if a licable) The outlet device Clogging has occurred. Clean out the outlet device. Dispose of the sediment off -site. The outlet device is damaged Repair or replace the outlet device. The receiving water Erosion or other signs of Contact the local NC Division of damage have occurred at the Water Quality Regional Office, or outlet. the 401 Oversight Unit at 919-733- 1786. The measuring device used to determine the sediment elevation shall be such that it will give an accurate depth reading and not readily penetrate into accumulated sediments. When the permanent pool depth reads 5.5 feet in the main pond, the sediment shall be removed. When the permanent pool depth reads 3.5 feet in the forebay, the sediment shall be removed. Sediment Removal k2L_?_Q _ — _ _ ;_l. Bottom Elevation BASIN DIAGRAM Ull in the blanks) -ft Min. Sediment Storage Sediment Donn SW401-Wet Detention Basin O&M-RevA Permanent Pool Elevation 27.50 Pool Sediment Removal Elevation 22.00 _Volume 1-ft Min, RECEIVED JUN 14 2010 Page 3 of 5 BY: Permit Number: (to be provided by DWQ) Drainage Area Number: Storage FOREBAY MAIN POND RECEIVED JUN 14 2010 BY: Form SW401-Wet Detention Basin O&M-Rev.4 Page 4 Of 5 Permit Number: (to be provided byDWQ) I acknowledge and agree by my signature below that I am responsible for the performance of the maintenance procedures listed above. I agree to notify DWQ of any problems with the system or prior to any changes to the system or responsible party. Project name:MCB-Camp Lejeune - Child Care Development_ Center - Midway BMP drainage area number:#2 - West Pond Print name:Carl Bakgr Title:DepuM Public Works Officer Address: Building 1005 Michael Road, MCB CampLLejeune. NC 28547 Phone:(910) 451-22173 Date: �P ` 7 /� Note: The legally responsible party should not be a homeowners association unless more than 50% of the lots have been sold and a resident of the subdivision has been named the president. I, _/`/!_ ��o/J,� __ _____ , a Notary Public for the State of _ -Z� _ _ day of County of 5%/nzl W , do hereby certify that personally appeared before me this and acknowledge the due execution of the forgoing wet detention basin maintenance requirements hand and official seal ' ALICE A BONNETTE Notary PubIIC Onslow County State of North Carolina My Commiulon Expires Oct.23, 2010 SEAL. My commission expires. Q` f a��1° Witness my :JUN CEIVED 14 2D10 Form SW401-Wet Detention Basin O&M-Rev.4 Page 5 of 5 iPw10aY9111� ' I Wk. CuwMOIJOU E1011GO ()CI 57' 3010 , ?1010 ok motip colotI4'O pu:lorn COMUJA HOICO, yr.Pi1G VrICE V EiUVIVE[!!5 si' � � 'i1' . '; r;[3 ;1.. ., � ! i;.;t 'r: �°1.Irr:. {'.r ?:11 '.i. s:! '•:� ;k. :Jic d.` -'! =!,ii �tia s.r,�;4,),�?t'}�* ti,r �, Fps} „t�er+i1'_'�a L•! {il . Lr}„ rjjc.J'_! r !- ..}r'1� �.;f;! t;,; !1•;�(r d' 1'.>l " "r � r r r � alki ' '.. Jfl ''.f �'"'' [!_f" J' t.! !l !r,!r, a 1• h_c'�i � �Si.'.' !-f. ��Jr[�.� ;�1�' !' ! ';.', WET DETENTION POND ANALYSIS -ALL RULES FILE NAME: S:1WQSISTORMWATERIEXCELSPREADSHEETSIPOND1060147 PROJECT #: SW8 1060147 1 REVIEWER: Initial Run Date PROJECT NAME: Midway Park Child Development Center Last modified Pond #1 (east pond) Receiving Stream: Mott Creek Class: Drainage Basin: jWhij, Oak Within 112 mile SA? index No. 51te Area I 5.u5 iacres ODrainage Area 117091.00 square feet Rules- "2008" or "Ph2" 2008 IMPERVIOUS AREAS - BUA Buildings 19517,00 square feet Parking 42802.00 square feet SW 3914.00 square feet Future square feet Offsite square feet Other 3002.00 square feet BIJA at diff. DSO square feet TOTAL 69235.00 square feet C. Baker 40361.00 12-Jul-10 19-16-3 DA Area I acres Runoff C 1 0.98 0.95 0.95 0.95 SURFACE AREA CALCULATION (with added DA and BUA at different design storm) Overall % Impervious Average Design Depth 59.13% 3.5 feet <_ SAIDA Ratio 5.91 % Req. SA 6924 sf TSS, 85 or 90: 90 % Prov. SA 8890 sf TEMPORARY POOL AND FOREBAY VOLUME CALCULATIONS Drainage Area® 117091.00 isf BUA 69235.00 0.00 sf Post development Rv= 0.582 #DIV10! unilless Old BUA Design Storm inches Old BUA Design Volume 0 1.5" New BUA Design Storm Volume 8521 1 yr. 24 hour Precipitation depth (inches) 3.63 from NOAA chart Predevelopment Rv value 0.05 Use 0, 05 if no existing BUA 1 yr. 24 hr. Pre -development volume 1771 cubic feet 1 yr, 24 hr. Post -development volume 20620 cubic feet 2008 Design Volume 1 8521 Icubic feet Phase 2 Design Volume 1 8521 Icubic feet Required Volume 8521 cf Area, sf Inc. volume Acc. volume Top of Sediment 24,00 msl ......... 402.00 0.00 0.00 Bottom of Shelf 29.50 msl.......... 7041.00 20468.25 20468,25 Permanent Pool 30.00 msl......... 8890.00 3982.75 24451.00 Top of Shelf 30.50 msl.......... 10910.00 4950.00 29401.00 Temporary Pool 30.90 msl.... ..... 11785.00 4539.00 33940.00 Volume met at etev 31.69 msl FOREBAY Vol. Prov, at TP 9489.04 cf Perm. Pool Volume= 24451 Req. Forebay Volume= 4890 Provided Volume= Percent= 0.0% Calculated Average Depth, feet 13.36 Max Pump HP NIA ORIFICE CALCULATION Average Head Flow 02, cfs Flow 05, cfs No. of Orifices Diameter, inches Drawdown = 1 yr 24 hr intensity, in/hr Runoff Coefficient 1 yr 24 hr peak Q Orifice flow<1 yr24hr ? feet cfs cfs or weir H x W days NOAA chart @t unitless cfs 02 Area = 2.81 05 Area = 1.12 Orifice Area = 2.41 Avg. Flow Q= 0.042 in x # of end contractions, N = discharge Coefficient, C Effective weir length, L sq. inches sq. inches sq. inches cfs 0.28 0.049 0.020 1 1.75 2.3 0.15 0.68 0.28 YES -OK WET DETENTION POND ANALYSIS - ALL RULES FILE NAME: S:IWQSISTORMWATERIEXCELSPREADSHEETSIPOND1060147 PROJECT #: SW8 060147 REVIEWER: Initial Run Date PROJECT NAME: Midway Park Child Development Center Last modified Pcnd #2 (west pond) Receiving Stream: Mott Creek Class: Drainage Basin: tWhite Oak Within 1/2 mile SA? Index No. Site Area 5.09 lacres ODrainage Area 63198.00 square feet DA Area 1.45 Rules- "2008" or "Ph2" 2008 IMPERVIOUS AREAS - BUA Runoff C Buildings 12148,00 square feet 1 Street square feet 0.98 SW square feet 0.95 Future square feet Offsite square feet 0.95 Other 27279.00 square feet 0.95 BUA at diff. DSO square feet TOTAL 39427,00 square feet SURFACE AREA CALCULATION 1with added DA and BUA at different design storm) Overall % Impervious 62.39% SA/DA Ratio 7.26% Average Design Depth 3 feet Req. SA 4590 TSS, 85 or 90: 90 % Prov. SA 5408 TEMPORARY POOL AND FOREBAY VOLUME CALCULATIONS New BUA I Old BUA Drainage Areal 63198.00 sf BUA 39427.00 0.00 sf Post development Rv= 0.611 #DiV/0! unitless Old BUA Design Storm inches Old BUA Design Volume 0 1.5" Now BUA Design Storm Volume 4831 1 yr. 24 hour precipitation depth (inches) 3.63 from NOAA chart Predevelopment Rv value D.DS Use 0.05 if no existing BUA 1 yr. 24 hr. Pre -development volume 956 cubic feet 1yr. 24hr.Post -development valume 11690 cubicfeet 2008 Design Volume 1 4831 Icubicfeet Phase 2 Design Volume 4831 cubic feet Required Volume 4831 cf Area, sf Inc. volum Top of Sediment 22,00 msl ......... 313.00 0,00 Bottom of Shelf 27.00 msl.......... 3991.00 10760.0( Permanent Pool 27.50 msl......... 5408.00 2349.75 Top of Shelf 28,00 msl.......... 7007.00 3103.75 Temporary Pool 28.30 msl......... 7421.00 2164.20 Volume met at elev 29.29 msl FOREBAY Vol. Prov, at TP 5267.95 cf Perm. Pout Volume= Req. Forebay Volume= Provided Volume= Percent= Calculated Average Depth, feet = 13.13 1 Max Pumv HP ORIFICE CALCULATION Average Head Flow Q2, cfs Flow Q5, cfs No. of Orifices Diameter, inches Drawdown = 1 yr 24 hr intensity, in/hr Runoff Coefficient 1 yr 24 hr peak Q Orifice flow<1y24hr? feet Q2 Area = 1.67 cfs Q5 Area = 0.67 cfs Orifice Area = 1.23 Avg. Flow Q= 0.020 or weir H x W in x days '# of end contractions, N = NOAA chart Qt discharge coefficient, C unitless Effective weir length, L = Cfs 0.25 0.028 0.011 1 1,25 2.7 o.15 0.7D 0.15 YE5-OK ROY COOPER Governor MICHAEL S. REGAN Secretary BRIAN WRENN Director October 2, 2020 MCB Camp Lejeune Attn: Commanding Officer c/o Neal Paul, Deputy Public Works Officer 1005 Michael Road Camp Lejeune, NC 28542 NORTH CAROLINA Environmental Quality Subject: Permit Renewal State Stormwater Management Permit No. SW8 060147 Midway Park Child Development Center High Density Commercial Wet Detention Pond Project Onslow County Dear Mr. Paul: The Wilmington Regional Office received a complete 8 year Stormwater Management Permit Renewal Application for the subject project on. The Division is hereby notifying you that permit SW8 060147 has been renewed on October 2, 2020, and shall be effective until July 13, 2028. For your records, please find enclosed a renewed, updated, and re -issued permit and a copy of the renewal application. Please keep this permit on file at all times. Please note that the renewed, updated, and re -issued permit does not impose new or different terms; it merely restates some of the previous terms to provide you with a better understanding of your obligations under the permit. The renewal and reissuance of this stormwater permit does not imply that the site is currently in compliance with the terms and conditions of this state stormwater permit. The plans originally approved on July 13, 2010, will remain in full force and effect in accordance with the regulations set forth in Title 15A NCAC 2H.1000. This permit is subject to the conditions and limitations as specified therein. Please pay special attention to the conditions listed in this permit regarding the Operation and Maintenance of the BMP(s), recordation of deed restrictions, procedures for changes of ownership, transferring the permit, and renewing the permit. Failure to establish an adequate system for operation and maintenance of the stormwater management system, to record deed restrictions, to transfer the permit, or to renew the permit, will result in future compliance problems. If any parts, requirements, or limitations contained in this permit are unacceptable, you have the right to request an adjudicatory hearing by filing a,written petition with the Office of Administrative Hearings (OAH). 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 919431-3000, or visit their website at www.NCOAFI.com. Unless such demands are made this permit shall be final and binding. If you have any questions, need additional copies of the permit or approved plans, please contact Daniel Sams in the Wilmington Regional Office, at (910) 796-7215 or dan.sams@ncdenr.gov. Sincerely, Brian Wrenn, Director Division of Energy, Mineral and Land Resources Enclosures: Attachment C — Permitting History Renewal Application Documents DES/dan:hlSlorm�,vaterlPermits & Prom ects12006\060147 FIDt2020 09 permit 0()Q147 cc: Wilmington Regional Office Stormwater File E North Carolina Department of Environmental Quality I Division of Energy. Mineral and Land Resources Wilmington Regional office 1127 Cardina[ Drive Extension I Wilmington, North Carolina 28405 N0177Yi C.aaOLINh °4�16wYms0"� 910.796.7215 State Stormwater Management Systems Permit No. SW8 060147 STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENTAL QUALITY DIVISION OF ENERGY, MINERAL AND LAND RESOURCES STATE STORMWATER MANAGEMENT PERMIT HIGH DENSITY COMMERCIAL DEVELOPMENT In accordance with the provisions of Article 21 of Chapter 143, General Statutes of North Carolina as amended, and other applicable Laws, Rules, and Regulations PERMISSION IS HEREBY GRANTED TO USMCB Camp Lejeune Midway Park Child Development Center 01 Street, Camp Lejeune, Onslow County FOR THE construction, operation and maintenance of two (2) wet detention ponds in compliance with the provisions of 15A NCAC 2H .1000 and Session Law 2008-211 (hereafter collectively referred to as the "stormwater rules') the approved stormwater management plans and specifications and other supporting data as attached and on file with and approved by the Division of Energy, Mineral and Land Resources and considered a part of this permit. This permit shall be effective from the date of issuance until July 13, 2028, and shall be subject to the following specified conditions and limitations: I. DESIGN STANDARDS 1. This permit is effective only with respect to the nature and volume of stormwater described in the application and other supporting data. 2. This stormwater system has been approved for the management of stormwater runoff as described in Section 1.7 of this permit. The East pond has been designed to handle the runoff from 69,235 square feet of impervious area and the West pond has been designed to handle the runoff from 39,427 square feet of impervious area. 3. A 50' wide vegetative buffer must be provided and maintained adjacent surface waters, measured landward from the normal pool of impounded structures, the top of bank of both sides of streams and rivers and the mean or normal high water line of tidal waters. 4. The tract will be limited to the amount of built -upon area indicated on page 3 of this permit, and per approved plans. 5. All stormwater collection and treatment systems must be located in either dedicated common areas or recorded easements. The final plats for the project will be recorded showing all such required easements, in accordance with the approved plans. Page 1 of 6 State Stormwater Management Systems Permit No. SW8 060147 6. The runoff from all built -upon area within the permitted drainage area(s) of this project must be directed into the permitted stormwater control system. 7. The following design criteria have been provided in the wet detention ponds and must be maintained at design condition: East Pond West Pond a. Drainage Area, acres: Onsite, ft2: Offsjte, ft2 2.69 117,091 None 1.45 63,198 None b. Total Impervious Surfaces, ft2: Onsite, ft2: Offsite, ft2 69,235 69,235 None 39,427 39,427 None C. Design Storm, inches: 1.5 1.5 d. Average Pond Design Depth, feet: 3.5 3.0 e. TSS removal efficiency: 90% 90% f. Permanent Pool Elevation, FMSL: 30 27.5 Permanent Pool Surface Area, ft2: 8,890 5,408 h. Permitted Storage Volume, ft3: 9,303 5,132 i. Tem ora Storage Elevation, FMSL: 30.9 28.3 Pre-dev. 1 r-24 hr. discharge rate, cfs: 0.06 0.03 k. Controlling Orifice, in: 1.75 1.25 I. Orifice flowrate, cfs: 0.04 0.02 M. Permitted Forebay Volume, ft3: 3,904 2,049 n. Fountain Horsepower NIA NIA o. Receiving Stream/River Basin: Mott Creek 1 WOK02 57—Tstream Index Number: 19-16-3 Classification of Water Body: QNSW II. SCHEDULE OF COMPLIANCE 1. The stormwater management system shall be constructed in its entirety, vegetated and operational for its intended use prior to the construction of any built -upon surface. 2. During construction, erosion shall be kept to a minimum and any eroded areas of the system will be repaired immediately. 3. The permittee shall at all time provide the operation and maintenance necessary to assure the permitted stormwater system functions at the design condition. The approved Operation and Maintenance Plan must be followed in its entirety and maintenance must occur at the scheduled intervals including, but not limited to: a. Semiannual scheduled inspections (every 6 months). b. Sediment removal. C. Mowing and re -vegetation of slopes and the vegetated filter. d. Immediate repair of eroded areas. e. Maintenance of all slopes in accordance with approved plans and specifications. f. Debris removal and unclogging of outlet structure, orifice device, flow spreader, catch basins and piping. g. Access to the outlet structure must be available at all times. 4. Records of maintenance activities must be kept and made available upon request to authorized personnel of DEMLR. The records will indicate the date, activity, name of person performing the work and what actions were taken. Page 2 of 6 State Stormwater Management Systems Permit No. SW8 060147 5. The facilities shall be constructed, operated and maintained in accordance with the provisions of this permit, the approved plans and specifications, and the supporting documents attached to this permit and on file with the Division. 6. Upon completion of construction, prior to issuance of a Certificate of Occupancy, and prior to operation of this permitted facility, a certification must be received from an appropriate designer for the system installed certifying that the permitted facility has been installed in accordance with this permit, the approved plans and specifications, and other supporting documentation. Any deviations from the approved plans and specifications must be noted on the Certification. A modification may be required for those deviations. 7. 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. 8. Access to the stormwater facilities for inspection and maintenance shall be maintained via appropriate recorded easements at all times. 9. No person or entity, including the permittee, shall alter any component shown in the approved plans and specifications. Prior to the construction of any modification to the approved plans, the permittee shall submit to the Director, and shall have received approval for modified plans, specifications, and calculations including, but not limited to, those listed below. For changes to the project or SCM that impact the certifications, a new or updated certification(s), as applicable, will be required and a copy must be submitted to the appropriate DEQ regional office upon completion of the modification: a. Any modification to the approved plans and specifications, regardless of size including the SCM(s), BUA, details, etc. b. Redesign or addition to the approved amount of BUA or to the drainage area. C. Further development, subdivision, acquisition, lease or sale of any, all or part of the project and/or property area as reported in the approved plans and specifications. d. Altering, modifying, removing, relocating, redirecting, regrading, or resizing of any component of the approved SCM(s), the stormwater collection system and/or vegetative conveyance shown on the approved plan. e. The construction of any allocated future BUA f. The construction of any permeable pavement, #57 stone area, public trails, or landscaping material to be considered a permeable surface that were not included in the approved plans and specifications. g. Other modifications as determined by the Director. 11. A copy of the approved plans and specifications shall be maintained on file by the Permittee at all times. 12. The Director may notify the permittee when the permitted site does not meet one or more of the minimum requirements of the permit. Within the time frame specified in the notice, the permittee shall submit a written time schedule to the Director for modifying the site to meet minimum requirements. The permittee shall provide copies of revised plans and certification in writing to the Director that the changes have been made. Page 3 of 6 State Stormwater Management Systems Permit No. SW8 060147 III. GENERAL CONDITIONS 1. This permit is not transferable to any person or entity except after notice to and approval by the Director. The permittee shall submit a completed and signed "Permit Transfer Application Form" (available on the Division website) accompanied by the required fee and supporting documentation as listed on the form, to the Division at least 60 days prior. 2. The permittee is responsible for compliance with all permit conditions until such time as the Division approves the transfer request. Neither the sale of the project nor the conveyance of common area to a third party constitutes an approved transfer of the stormwater permit. 3. Any individual or entity found to be in noncompliance with the provisions of this stormwater management permit or the requirements of the Stormwater rules is subject to enforcement procedures as set forth in NCGS 143 Article 21. 4. The issuance of this permit does not preclude the Permittee from complying with any and all statutes, rules, regulations, or ordinances, which may be imposed by other government agencies (local, state, and federal) having jurisdiction. 5. In the event that the facilities fail to perform satisfactorily, including the creation of nuisance conditions, the Permittee shall take immediate corrective action, including those as may be required by this Division, such as the construction of additional or replacement stormwater management systems. 6. The permittee grants DENR Staff permission to enter the property during normal business hours for the purpose of inspecting all components of the permitted stormwater management facility. 7. The permit remains in force and effect until the permittee files a request with the Division for a permit modification, transfer, renewal1 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. 10. 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 reissued this the 2th day of October 2020. NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION Division of Energy, Mineral and Land Resources By Authority of the Environmental Management Commission Page 4 of 6 State Stormwater Management Systems Permit No. SW8 060147 Midway Park Child Development Center Stormwater Permit No. SW8 060147 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 5 of 6 State Stormwater Management Systems Permit No. SW8 060147 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. Ail components of the stormwater BMP are located in either recorded common areas, or recorded easements. cc: NCDENR-DWQ Regional Office Page 6of6 UEML,H Usk ONLY Date R cei ed Fee Paid Permit Number s °-I ,<3u)K D a INC DEQ Division of Energy, Mineral and Land Resources STATE STORMWATER: PERMIT RENEWAL APPLICATION FORM In accordance with 15A NCAC 2H.1045(3), the current permit holder shall renew their high density permit 160 days prior to its expiration. Renewed permits are valid for a period of 8 years per Session Law 2011-398 (SB 781) Section 60.(c). This application form is for permit renewals only. A. PROJECT INFORMATION 1. State Stormwater Permit Number: SW8 060147 2. Project name: MIDWAY PARK 3. Project street address: XXX City: MCB Camp Lejeune County: Onslow ZIP: 28542 4. What, if any, changes have been made to the project as permitted? N/A If the project has changed from the original approved plans, please complete SWU-101 for a Major Modification or Minor Modification Application form available at: https://deg.nc.gov/about/divisions/energy- mineral-land-resources/ener -mineral-land-rules/stormwater ro raml ost-construction. B. PERMITTEE INFORMATION If changes to the permittee or project name have been made, please complete either the Permit Update form or the Permit Transfer form available at: https://deg.nc.gov/about/divisions/energy-mineral-land- resources/energy- mine raHand- rules/stormwater-program/post-construction. State Stormwater Permits do not automatically transfer with the sale of the property. 1. Current Permit Holder's Company Name/Organization: MCB Camp Lejeune 2. Signing Official's Name: Neal Paul 3. Signing Official's Title: Deputy Public Works Division 4. Mailing Address: MCB Camp Lejeune 1005 Michael Rd. City: MCB Camp Lejeune _ State: NC ZIP: 28547-2521 5. Street Address: City: State: ZIP 6. Phone: (910) 451-2213 Email: neal.pau I@ usmc.mil SEP s 20 SEP 2020 Stormwater Permit Renewal Form Page 1 of 3 May 11, 2018 C. SUBMITTAL REQUIREMENTS Submit the application package to the appropriate DEMLR Regional Office (Coastal, SA Waters) or DEMLR Central Office (Urbanizing Areas Ph 2, USMP, Non -Coastal HQW/ORW). Only applications packages that include all required items listed below will be accepted and reviewed. Initial each item below to indicate that the required information is provided in the application package: MCT 1. A permit application processing fee of $505.00 payable to NCDEQ. MCT 2. One original signed hard copy and one electronic copy of this completed form. The signing official named on this application to represent the current permittee must meet one of the following: a. Corporation — a principle executive officer of at least the level of vice-president; b. Limited Liability Company (LLC) — a manager or company official as those terms are defined in G.S. 57D "North Carolina Limited Liability Company Act;" c. Public Entity— a principal executive officer, ranking official, or other duly authorized employee; d. Partnership or limited partnership — the general partner; e. Sale proprietor; or f. Letter of authorization signed by one of the signatories noted in a — e above authorizing the signature of another entity. MCT 3. One hard copy and one electronic copy of recorded documents required by the original permit that have not yet been received by DEMLR, including: deed restrictions, protective covenants, condominium/planned community declaration and easements. If the project has been built, include documentation that the maximum BUA per lot or maximum total BUA has not been exceeded. If the project has not been built, include a signed agreement that the final recorded deed restrictions and protective covenants will be submitted at a later date. MCT 4. O&M Agreements, Please select one: ® I have a copy of the current recorded O&M Agreement for all SCMs, and I will continue to keep this on file with the permit; or ❑ I do not have a copy of the current recorded O&M Agreement for all SCMs and am requesting a copy be sent to me. I agree to keep this on file with the permit. MCT 5. Designer Certifications, Please select one: ® A copy of the certification(s) confirming that the project was built in accordance with the approved plans have been previously provided to the Division; or ❑ A copy of the certification(s) confirming that the project was built in accordance with the approved plans are enclosed; or ❑ The project has not yet been built. MCT 6. [IF APPLICABLE] If the project has been built, one original hard copy and one electronic copy of a signed, sealed, and dated letter from a licensed professional stating that the SCMs have been inspected, and that they have been built and maintained in accordance with the permit. 7. [IF APPLICABLE] When the permittee is a corporation or a limited liability corporation (LLC): Provide one hard copy and one electronic copy of documentation from the NC Secretary of State, or other official documentation, which supports the titles and positions held by the persons listed in Section C.2 per 15A NCAC 2H. 1043(3)(b). https://www.sosnc.gov/online services/search/by title/ Business Registration RECEI!/E SEP 14 2020 BY: Stormwater Permit Renewal Application Form Page 2 of 3 May 11, 2018 D. PE ITT E'S CERTIFICATION �-. ,the person legally responsible for the permit, certify that I have a copy of the Permit and O&M Agreement on site (or I will obtain a copy and it will be kept on site), that I am responsible for the performance of the maintenance procedures, and the site has been and will be maintained according to the O&M Agreement and approved plans. I agree to notify DEMLR of any problems with the SCMs or built -upon a and to submit the proper forms to modify or transfer the permit prior to any changes to the project, SC or ershi All in mation provided on this permit renewal application is, to the best of my knowledge, Ao r t d complete. Q Signature: < Date: 8 Zg 2,0 NOTARIZ TIO� � a Notary Public for the State of \N-NakCZ,,b(z 42S. ! _ County of �Jt� do hereby certify that �k�jA gJ0 t l�lN)64Q- I personally appeared before me this the ��`"` r+rr""n day of 20—ILD , and acknowledge the due a` "V. execeiotn'of the forgo`risjstrument. Witness my hand and official seal, kA0TAR� Sea!) SUSUG Notary qux rtCir l 1 L � / My commission expires _7 G PIM 20 2=D CR. EIVE SEP 14 2020 Br: Stormwater Permit Renewal Application Form Page 3 of 3 May 11, 2018 Attachment C - Permitting History Midway Park Child Development Center Permit No. SW8 060147 Approval Date permit Action BIMS Version Description of the Changes 7/13/2010 Original Approval 1.0 2 wet detention ponds subject to Session Law 2008-21 1 10/2/2020 Renewal 2.0 New expiration date is 7/13/2028 Page 1 of 1 Central Files: APS SWP 10/5/2020 Permit Number SW8060147 Permit Tracking Slip Program Category Status Project Type State SW Active Renewal with major mod Permit Type Version Permit Classification State Stormwater 2.00 Individual Primary Reviewer Permit Contact Affiliation dan.sams Coastal SWRuIe Coastal Stormwater - 1995 Permitted Flow Facility Facility Name Major/Minor Region Midway Park Child Development Center Minor Wilmington Location Address County Building Lch4007 4th St Onslow Facility Contact Affiliation Midway Park NC 28544 Owner Owner Name Owner Type Commanding Officer Marine Corps Base Camp Lejeune Government - Federal Owner Affiliation Robert A. Lowder Post Ln Building 12 Rm 244 Dates/Events Camp Lejeune NC 28542 Scheduled Orig Issue App Received Draft Initiated Issuance Public Notice Issue Effective Expiration 7/13/2010 9/14/2020 10/2/2020 10/2/2020 7/13/2028 Regulated Activities Requested /Received Events State Stormwater - HD - Detention Pond Outfall Waterbody Name Streamindex Number Current Class Subbasin Burd, Tina J From: Burd, Tina J Sent: Wednesday, September 23, 2020 4:26 PM To: Prendergast CIV Talia M Subject: SW8 060147 - Midway Park Child Development Center The Wilmington Regional Office of the Division of Energy, Mineral and Land Resources (5tormwater Section) accepted the Stormwater Permit Renewal Application and $505.00 fee for the subject project on September 14, 2020. The project has been assigned to Dan Sams and you will be notified if additional information is needed. Best Regards, Tina Burd Administrative Associate II Wilmington Regional Office Division of Environmental Assistance & Customer Service Phone 910-796-7215 NCDEQ Wilmington Regional Office 127 Cardinal Drive Ext. Wilmington, NC 28405 E Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to third parties. Application Completeness Review Checklist {Non -Transfers} - Short Version Project Name:-yV1,,1DwP h �A(z r_ �{ iL J DcJ L� f'r✓t�r� ��Fge_Date Delivered to WIRO: Project County/Location: t,r.7St__0 MLA BIMSReceived/Accepted Date: c20ou�T3\ Rule(s): F-12017 Coastal �2008 Coastal ®1995 Coastal BfMS Acknowledged Datel: Phase it Universal F 1988 Coastal Permit Action: New Major Mod / Minor M Renewal Permit Type: (!�P LD / LD Overall / HD &LD Combo General Permit / Offsite / Exempt / Rescission New Permit #Z: Existing Permit #: LQ [:(pD: 7 Expriation Date3: ;3 2-o site to SWS. Development Type: Commercial / Residential / Other 1 ' i u ``Yid Lot is in Master Permit? Subdivided?: Subdivision C _,ng a Lor-- nPE Cert on File? Permittee Type & Documents Needed; Property Owner(s) El Purchaser Lessee Viable? -� �Viabie?Viable, Deed❑Purchase Agmt Lease MNotSu divided: Deed Subdivision: Common Area Deed Paperwork FIHOA Developer Viable? Viable? Election Minutes RFepplication e: F-15505 (within 6mo) Check#(s): 05upplement2 (1 new form or for older forms: 1 original perSCM) FIO&M2 Soils Report (lnfil or PP) Calculations (signed/sealed) Deed Restrictions, if subdividedz Project Narrative FTSGS Map (or on file?) Subject to SA?: Y / N Subject to ORW?: Plans (2 Sets) F_1PE Certification F-Tectronic Copies Easements, Recorded (2017 Rules) NOTES: IEnter BIMS Acknowledged Date on this Sheet 2For New Projects -Enter New Permit # on Supplements & Deed Restiction Templates. 3If w/in 6 months and they are requesting a mod, STOP. Needs a renewal first. 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