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SW8971034_CURRENT PERMIT_20030911
STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO. SWl97Le5_z1 DOC TYPE VI) CURRENT PERMIT APPROVED PLANS ❑ HISTORICAL FILE ❑ COMPLIANCE EVALUATION INSPECTION DOC DATE YYYYMMDD Michael F. Easley, Governor William G. Ross Jr., Secretary North Carolina Department of Environment and Natural Resources Alan W. Klimek, P.E.,Director Division of Water Quality Coleen H. Sullins, Deputy Director Division of Water Quality Mr. Richard Cass Flowers, C & D Partnership, LLC 209 N. 35th Street September 11, 2003 Member/Manager Morehead City, NC 28557 Subject: Stormwater Permit No. SW8 971034 Mod Morehead Professional Park High Density Subdivision Project Carteret County Dear Mr. Flowers: The Wilmington Regional Office received a complete modification to the Stormwater Management Permit Application for Morehead Professional Park on August 29, 2003. 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 2H.1000. We are forwarding Permit No. SW8 971034 Modification, dated September 11, 2003, for the construction of the project, Morehead Professional Park. This permit shall be effective from the date of issuance until September 11, 2013, and shall be subject to the conditions and limitations as specified therein. Please pay special attention to the Operation and Maintenance requirements in this permit. Failure to establish an adequate system for operation and maintenance of the stormwater management system will result in future compliance problems. If any parts, requirements, or limitations contained in this permit are unacceptable, you have the right to request an adjudicatory hearing upon written request within thirty (30) days following receipt of this permit. This request must be in the form of a written petition, conforming to Chapter 150E of the North Carolina General Statutes, and filed with the Office of Administrative Hearings, P.O. Drawer 27447, Raleigh, NC 27611- 7447. Unless such demands are made this permit shall be final and binding. If you have any questions, or need additional information concerning this matter, please contact Linda Lewis, or me at (910) 395-3900. Sincerely, t� Rick Shiver Water Quality Regional Supervisor RSS/arl: S:1WQSISTORMWATIPERMIT1971034.sep03 cc: Ron Cullipher, P.E., Stroud Engineering Town of Morehead City Building Inspections Linda Lewis Wilmington Regional Office Central Files N. C. Division of Water Quality 127 Cardinal Drive Extension (910) 395-3900 Wilmington Regional Office • Wilmington, NC 28405 (910) 350-2004 Fax Customer Service 1 800 623-7748 WKY NCI)ENR t State Stormwater Management Systems Permit No. SW8 971034 Modification STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF WATER QUALITY STATE STORMWATER MANAGEMENT PERMIT HIGH DENSITY DEVELOPMENT In accordance with the provisions of Article 21 of Chapter 143, General Statutes of North Carolina as amended, and other applicable Laws, Rules, and Regulations PERMISSION IS HEREBY GRANTED TO Richard Cass Flowers, C & D Partnership, LLC Morehead Professional Park Carteret County FOR THE construction, operation and maintenance of three wet detention ponds in compliance with the provisions of 15A NCAC 2H .1000 (hereafter referred to as the "stormwater rules`) and the approved stormwater management plans and specifications and other supporting data as attached and on file with and, approved by the Division of Water Quality and considered a part of this permit. This permit shall be effective from the date of issuance until September 11, 2013, and shall be subject to the following specified conditions and limitations: 1. DESIGN STANDARDS This permit is effective only with respect to the nature and volume of stormwater described in the application and other supporting data. 2. This stormwater system has been approved for the management of stormwater runoff as described on page 3 of this permit, the Project Data Sheet. The subdivision is permitted for 16 lots, each allowed a maximum amount of built - upon area, as described in Section 11.10 of this permit. 3. Approved plans and specifications for this project are incorporated by reference and are enforceable parts of the permit. 4. All stormwater collection and treatment systems must be located in either dedicated common areas or recorded easements. The final plats for the project will be recorded showing all such required easements, in accordance with the approved plans. 5. The surface areas and volumes specified on the Project Data Sheet must be provided. The drawdown rate of the system must be between 2 and 5 days. 6. The runoff from a maximum of 21,389 ft2 may be directed into the wetland. 2 s State Stormwater Management Systems Permit No. SW8 971034 Modification DIVISION OF WATER QUALITY PROJECT DATA SHEET Project Name: Morehead Professional Park Permit Number: SW8 971034 Modification Location: Carteret County Applicant: Mr. Richard Cass Flowers, Member/Manager Mailing Address: C & D Partnership, LLC 209 N. 35th Street Morehead City, NC 28557 Application Date: November 1, 1999 Modified August 29, 2003 Receiving Stream 1 River Basin: Calico Creek 1 White Oak Stream Index Number: WH003 21-32 Classification of Water Body: "SC" Pond Number: 2 3 -. 4 Design Storm: Drainage Area, acres: 10.7 6.34 2.22 Onsite: 10.7 6.34 2.22 Offsite: 0 0 0 Total Impervious Surfaces, ft2: 331,551 195,818 57,743 Lots, ft2: Q196,106 0179,702 330,161 Roads/Parking, ft2: 60,598 13,917 13,311 Existing, ft2: 69,118 0 . 11,393 Sidewalk, ft2: 5729 2,199 2,878 Pond Depth, feet: 6.5 5.8 5.0 TSS removal efficiency: 90% 90% 90% Permanent Pool (PP) Elevation, FMSL: 10.20 8.51 12.50 Permitted Surface Area, ft2: 16,746 11,653 6,020 Permitted Storage Volume, ft3: 28,624 16,871 7,299 Temporary Storage Elevation, FMSL: 11.71 9.76 13.54 Controlling Orifice: 2.00" � 2.00" � Forebay Volume, ft3: n/a 7,989 4,201 iDLot 1 @4200; Lots 2-7, Lot 8 @13,699; Lot 9 @10,961. ®Lot 8 @14,038; Lot 9 @ 11,813; Lots 10-16. (Lot 1 @30,161. State Stormwater Management Systems Permit No. SW8 971034 Modification II. SCHEDULE OF COMPLIANCE 1. No homeowner/lot owner/developer shall fill in, alter, or pipe any drainage feature (such as swales) shown on the approved plans as part of the stormwater management system without submitting a revision to the permit and receiving approval from the Division. 2. The permittee is responsible for verifying that the proposed built -upon area for the entire lot, including driveways and sidewalks, does not exceed the allowable built -upon area. Once the lot transfer is complete, the -built -upon area may not be revised without approval from the Division of Water Quality, and responsibility for meeting the built -upon area limit is transferred to the individual property owner. 3. If an Architectural Review Board or Committee is required to review plans for compliance with the BUA limit, the plans reviewed must include all proposed built -upon area. Any approvals given by the Board do not relieve the owner of the responsibility to maintain compliance with the permitted BUA limit. 4. The permittee shall submit to the Director and shall have received approval for revised plans, specifications, and calculations prior to construction, for any modification to the approved plans, including, but not limited to, those listed below: a. Any revision to the approved plans, regardless of size. b. Project name change. C. Transfer of ownership. d. Redesign or addition to the approved amount of built -upon area. e, Further subdivision, acquisition, or sale of all or part of the project area. The project area is defined as all property owned by the permittee, for which Sedimentation and Erosion Control Plan approval or a CAMA Major permit was sought. f. Filling in,'altering, or piping of any vegetative conveyance shown on the approved plan. 5. The Director may determine that other revisions to the project should require a modification to the permit. 6. 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. 7. The stormwater management system shall be constructed in it's entirety, vegetated and operational for its intended use prior to the construction of any built -upon surface. 8. During construction, erosion shall be kept to a minimum and any eroded areas of the system will be repaired immediately. 9. Upon completion of construction, prior to issuance of a Certificate of Occupancy, and prior to operation of this permitted facility, a certification must be received from an appropriate designer for the system installed certifying that the permitted facility has been installed in accordance with this permit, the approved plans and specifications, and other supporting documentation. Any deviations from the approved plans and specifications must be noted on the Certification. 4 State Stormwater Management Systems Permit No. SW8 971034 Modification 10. Prior to the sale of any lot, deed restrictions must be recorded which limit the built -upon area per lot to the amount as shown on the Project Data Sheet, per Section I, Part 2. The recorded statements must follow the form: a. The following covenants are intended to ensure ongoing compliance with State Stormwater Management Permit Number SW8 971034 Mod., as issued by the Division of Water Quality under NCAC 2H.1000. b. The State of North Carolina is made a beneficiary of these covenants to the extent necessary to maintain compliance with the Stormwater Management Permit. C. These covenants are to run with the land and be binding on all persons and parties claiming under them. d. The covenants pertaining to stormwater may not be altered or rescinded without the express written consent of the State of North Carolina, Division of Water Quality. e. Alteration of the drainage as shown on the approved plans may not take place without the concurrence of the Division of Water Quality. f. The maximum built -upon area per lot is as follows, in square feet: Lot 1 34,361 Lot 6 18,035 Lot 11 34,748 Lot 2 27,648 Lot 7 27,378 Lot 12 14,083 Lot 3 26,000 Lot 8 27,737 Lot 13 15,997 Lot 4 26,898 Lot 9 22,764 Lot 14 27,059 Lot 5 41,287 Lot 10 24,506 Lot 15 18,032 Lot 16 19,261 This allotted amount includes any built -upon area constructed within the lot property boundaries, including easements, and that portion of the right-of-way between the front lot line nd the edge of the pavement. Built upon area includes, but is not limited to, structures, asphalt, concrete, gravel, brick, stone, slate, coquina and parking areas, but does not include raised, open wood decking, or the water surface of swimming pools. g. All runoff on the lot must drain into the permitted system. This may be accomplished by providing roof drain gutters which drain to the street, grading the lot to drain toward the street, or grading perimeter swales and directing them into the pond or street. Lots that naturally drain into the system are not required to provide these measures. h. Built -upon area in excess of the permitted amount will require a permit modification. i. Each lot within the subdivision whose ownership is not retained by the permittee, must submit a separate Offsite Stormvater Management Permit application package to the Division of Water Quality and receive a permit prior to any construction on the lot. 11. , A copy of the recorded deed restrictions must be submitted to the Division within 30 days of the date of recording the plat, and prior to selling lots. The recorded copy must contain all of the statements above, bear the signature of the Permittee, the deed book number and page, and stamp/signature of the Register of Deeds. k State Stormwater Management Systems Permit No. SW8 971034 Modification 12. 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. 13. Decorative spray fountains will not be allowed in the stormwater treatment system 14. Permanent seeding requirements for the stormwater control must follow the guidelines established in the North Carolina Erosion and Sediment Control Planning and Design Manual. 15. Prior to transfer of the permit, the stormwater facilities will be inspected by DWQ personnel. The facility must be in compliance with all permit conditions. Any items not; in compliance must be repaired or replaced to design condition prior to the transfer. Records of maintenance activities performed to date will be required. 16. The permittee shall at all times provide the operation and maintenance necessary to assure that all components of the permitted stormwater system function at optimum efficiency. The approved Operation and Maintenance Plan must be followed in its entirety and maintenance must occur at the scheduled intervals including, but not limited to: a. Semiannual scheduled inspections (every-6 months). b. Sediment removal. C. Mowing and revegetation of side slopes. d. Immediate repair of eroded areas. e. Maintenance of side slopes in accordance with approved plans and specifications. f. Debris removal and unclogging of structures, orifice, catch basins and piping. g. Access to all components of the system must be available at all times. 17. Records of maintenance activities must be kept and made available upon request to authorized personnel of DWQ. The records will indicate the date, activity, name of person performing the work and what actions were taken. 18. This permit shall become voidable unless the facilities are constructed in accordance with the conditions of this permit, the approved plans and specifications, and other supporting data. 19. Built upon area includes, but is not limited to, structures, asphalt, concrete, gravel, brick, stone, slate, coquina and parking areas, but does not include raised, open wood decking, or the water surface of swimming pools. 111. GENERAL CONDITIONS This permit is not transferable to any person or entity except after notice to and approval by the Director. In the event there is either a desire for the facilities to change ownership, or there is a name change of the Permittee, a "Name/Ownership Change Form" must be submitted to the Division of Water Quality accompanied by appropriate documentation from the parties involved. This may include, but is not limited to, a deed of trust, recorded deed restrictions, Designer's Certification and a signed Operation and Maintenance plan. The project must be in good standing with DWQ. The approval of this request will be considered on its merits and may or may not be approved. M. State Stormwater Management Systems Permit No. SW8 971034 Modification 2. The permittee is responsible for compliance with all of the terms and conditions of this permit until such time as the Director approves the transfer'°request. 3. Failure to abide by the conditions and limitations contained in this permit may subject the Permittee to enforcement action by the Division of Water Quality, in accordance with North Carolina General Statute 143-215.6A to 143-215.6C. 4: The issuance of this permit does not preclude the Permittee from complying with any and all statutes,. rules, regulations, or ordinances which may be imposed by other government agencies (local, state, and federal) which have jurisdiction. 5. 1n 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 permit may be modified, revoked and reissued or terminated for cause. The filing of a request for a permit modification, revocation and reissuance or termination does not stay any permit condition. 7. Permittee grants permission to staff of the DWQ to access the property for the purposes of inspecting the stormwater facilities during normal business hours. 8. The permittee shall notify the Division of any name, ownership or mailing address changes within 30 days. 9. A copy of the approved plans and specifications shall be maintained on file by the Permittee for a minimum of ten years from the date of the completion of construction. Permit issued this the 11th day of September, 2003. M NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION Alan W. Klimek, N.E., Uirector Division of Water Quality By Authority of the Environmental Management Commission Permit Number SW8 971034 Modification 7 State Stormwater Management Systems Permit No. SW8 971034 Modification Morehead Professional Park Stormwater Permit No. SW8 971034 Mod. Carteret Count _ ©eoisdner's Certification Page 1 of 2 I, , as a duly registered in the, State of North Carolina, having been authorized to observe (periodically/weekly/full tone) fire construction of the project, (Project) for (Project Owner) hereby state that, to the ix,st 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. fh�chouklist of items on page 2 of this form are a part of this Certification. Not(,d deviations from approved plans and specifications: Signat,'ure Registration Number )._ate SEAL E. State Stormwater Management Systems Permit No. SW8 971034 Modification Certification Requirements: Page 2 of 2 1. The drainage area to the system contains approximately the permitted acreage. 2. The drainage area to the system contains no more than the permitted amount of built -upon area. 3. All the built -upon area associated with the project is graded such that the runoff drains to the system. 4. All roof drains are located such that the runoff is directed into the system. 5: The outlet/bypass structure elevations are per the approved plan. 6.. The outlet structure is located per the approved plans. 7. Trash rack is provided on the outlet/bypass structure. 8. All slopes are grassed with permanent vegetation. 9. Vegetated slopes are .no steeper than 3:1. 10. The inlets are located per the approved plans and do not cause short- circuiting of the system. 11. The permitted amounts of surface area and/or volume have been provided. 12. Required drawdown devices are correctly sized per the approved plans. 13. All required design depths are provided. 14. All required parts of the system are provided, such as 'a vegetated shelf, a forebay, and the vegetated filter. 15. The required dimensions of the system are provided, per the approved plan. cc:' NCDENR-DWQ Regional Office Town of Morehead City Building Inspections 9 UFI'ICI�', USE U N I Y 11 I�.,u 12cr.ei�ecl Fee aid Permit Dumber 4-2e-63 M -�-v3 2vW 1005 1 f6ue 9'7ta-w- yoo/ State oI-North Carolina Department oi` Environtnent and Natural Resources Division Or Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM Tfris lilrur imil, be pluuocniti(,d for ttsr! as an origbwl 1. Gi:NFRAI: INFORNIAT[ON 1. Applit:mats m w (sl:rc61y the liar„e of' III(! corporatiorI. illdiviclu.rl, etc. whet owsis [hc ])inject): -- - - --C- &- D-Partnership,_-LLC---------------------------- - 2. Print UN%ner/Sigllillg 0I'11(:ial's nakllw mid line (1)srson legally I-esponsihle for facility and (-.ompliance): Richard Cass Flowers, Member Manager 3. M\ iiliuh Address Ior person li.swd in item 2 al w(, : .--209.N.. 35th_Street -- --------- -------------- Git�: Morehead -City_ State: —NC--_ Zip:-28557 ._--.----__ I f,lephnnC; Nunrltr'r: (---252-----)---.241-2310—--- ---- — _--- f Project Nnior; (.tiaihdivisioo, Facility, or esmWishrnerrt rranrC; - slutold he vonsislew Witli project n.une on plans. spedfi('.+lions. Inners, oper;lliorr and maintenance agreerrrents. etc.): Morehead Professional Park 5. L.ur.atinn of I'rujC r,t (slrcel mkirt-'s): Penny Lane & John Platt Drive city: - -- .- _Morehead City - - (aunty:- Carteret 6, Directions to project (fn,n) ne'll-est major irrters(%tiun): From Intersectionof NC Hwy__24_-& US._Hwy_100 Take Bridges St. Ext. Approximately 3. Miles to Stop Light,_Turn-Left_.on_-Penny Lane, --Penny Lane_1/2._Mile-to_ Project 7. L,ihik,df:: 340 43' 50" - LungittrrlC;: 760 45'-24"--------- of'pro.ject R. conl.rct persnn who Cart ans%w,rr yucsl it.tns ahCnrr the 1:x'njcCl: Marne: Kevin Kuhn, P.E. - - -- -- I'clel hC ne Nrnnher: (- 252 li. PI-RrM11' INFORMATION: 1. tilac.,cifj whellwi- LtrCrjc,a is (che(:k rme):---Ne%v --Renewal Farm SWLJ-101 Version 3.99 I'a-c I of 4 247-7479 --X—Modification Fry. 2. If this application is being submitted as the result of a renewal or modification to an existing permit, list the existing permit number Sw8 971034 and its issue date (if known) 3. Specify the type of project (check one): Low Density X High Density Redevelop General Permit Other 4. Additional Project Requirements (check applicable blanks): _CAMA Major x___Sedimentation/Erosion Control _X_404/401 Permit _NPDES Stormwater Information on required state permits can be obtained by contacting the Customer Service Center at 1-877-623-6748. III. PROJECT INFORMATION 1, In the space provided below, summarize how stormwater will be treated. Also attach a detailed narrative (one to two pages) describing stormwater management for the project. -9,07 TSS Removal -Wet Detention Pond 7 F.Xisting Ponds, 1 Proposed Pohd 2. Storrnwater runoff from this project drains to the White Oak River basin. 3• Total Project Area: 21.70 acres 4, Project Built Upon Area: 58 % 5. How many drainage areas does the project have? 3 6. Complete the fdllowing information for each drainage area. If there are more than two drainage areas in the project, attach an additional sheet with the information for each area provided in the same format as below, PoNc 4 pow o 2- Receiving Stream Name Calico Creek Calico Creek Receiving Stream Class SC SC Drainage Area 96,703 Ft2 466,092 Ft2 Existing Impervious; Area 27,582 Ft2 79,427 Ft2 Proposed Impervious'Area 30 161 Ft2 `±5t Ft2 Z 5 2, 12I PT 2 % Impervious` Area (total) 60% 71 On -site Buildings 11,393 Ft2 49,949 Ft2 On -site Streets _. 60,598 Ft2 On -site Parking 13,311 Ft2 19,269 Ft2 On -site Sidewalks 2,878 Ft2 5,729 Ft2 Other on -site gpt 30,161 Ft2 t9, Ft2 Off -site Total: 57,743 Ft2 I Tota13-_+i,1 FT2 331,5131 SF " Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas, sidewalks, gravel areas, etc. Farm SWU-101 Version 3.99 Page 2 of 4 If this application is being submitted as the result of a renewal or modification to an existing permit, list the existing permit number and its issue date (if known) 3. Specify the type of project (check one): Low Densit High Density Redevelop General Permit Other 4. Additional Project Re irements (check applicable blanks): _CAMA Major —Se mentation/Erosion Control _404/401 Permit _NPDES Stormwater Information on required state pe its can be T ed by contacting the Customer Service Center at 1-877 623 6748. n l per" k'- f /� j III. PROJECT INFORMATION cl 1. In the space provided below, summarize how stormw r will be treated. Also attach a detailed narrative (one to two pages) describing stormwater management fo he project . 2. Stormwater runoff from this project drains to the River basin. 3. Total Project Area: _ _ acres 4. Project Built Upon Area. % f 5. How many drainage areas does the project have? 6. Complete the following information for each drainage area. If there are more than two drainage areas in the project, attach an additional sheet with the information for each area provided in the same format as below. P 0 N1 0 3 irk n o t 9 .: 5r 11 f1..`t y Receiving Stream Name Calico Creek Receiving Stream Class SC Drainage Area 276,170 Ft2 Existing Impervious' Area 0 Proposed Impervious*Area 195,818 Ft2 % Impervious` Area (total) 71 r i rti �C it a; n e '' On -site Buildings — On -site Streets 13,917 Ft2 On -site Parking — On -site Sidewalks 2,199 Ft2 Other on -site 90% 179,702 Ft2 Off -site 1.9 I v —P2. P,p C_ Total: ( 5 S (a F-Tz otal: Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas, sidewalks, gravel areas, etc. Form SWU-101 Version 3.99 Page 2 of 4 7. How was the off -site impervious area listed above.derived? N/A IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS The following italicized deed restrictions and protective covenants are required to be recorded for all subdivisions, outparcels and future development prior to the sale of any lot. If lot sizes vary significantly, a table listing each lot number, size and the allowable built -upon area for each lot must be provided as an attachment. 1. The following covenants are intended to ensure ongoing compliance with state stormwater management permit number as issued by the Division of Water Quality. These covenants may not be changed or deleted without the consent of the State. 2. No more than square feet of any lot shall be covered by structures or impervious materials. Impervious materials include asphalt, gravel, concrete, brick, stone, slate or similar material but do not include wood decking or the water surface of swimming pools. 3. Swales shall not be filled in, piped, or altered except as necessary to provide driveway crossings. 4. Built -upon area in excess of the permitted amount requires -a state stormwater management permit modification prior to construction. 5. All permitted runoff from outparcels or future development shall be directed into the permitted stormwater control system. These connections to the stormwater control system shall be performed in a manner that maintains the integrity and performance of the system as permitted. By your signature below, you certify that the recorded deed restrictions and protective covenants for this project shall include all the applicable items required above, that the covenants will be binding on all parties and persons claiming under them, that they will run with the land, that the required covenants cannot be changed or deleted without concurrence from the State, and that they will be recorded prior to the sale of any lot. V. SUPPLEMENT FORMS The applicable state stormwater management permit supplement form(s) listed below must be submitted for each BMP specified for this project. Contact the Stormwater and General Permits Unit at (919) 733-5083 for the status and availability of these forms. Form SWU-102 Wet Detention Basin Supplement Form SWU-103 Infiltration Basin Supplement Form SWU-104 Low Density Supplement Form SWU-105 Curb Outlet System Supplement Form SWU-106 Off -Site System Supplement Form SWU-107 Underground Infiltration Trench Supplement Form SWU-108 Neuse River Basin Supplement Form SWU-109 Innovative Best Management Practice Supplement Form SWU-101 Version 3.99 Page 3 of 4 V1. SUBMITTAL REQUIREMENTS Only ctmrph;te application packages will be accepted mud reviewed by the Division of Water- Quality (DWQ). A complete package include~ all of the items listed below. The complete application package Should be subinined to the appropriate; DWQ Regional Office.. PIeaSe iruifcale that you NIVe provided the following required infonmition by initialing in the space pi,ovided next to ("101 ilerrl. • Origintll 'rrrd one copy of lie Slornlvvaler C\ miiigemew Perrnil Application FOrtn • One copy of the applicable Supplement Form(s) fol. each 13MI, • Pernril application processing fee of S420 (payahk; 10 NCDENR) — • Dlaailed narrative descr;plioll of stormwaler trt;atnrent/ruanagenlent • TWO c01:>icS of l)IMIS MKI specifications, 'rncludingi Develolnnatt/I'r0ject name Hngincer anti firm ,JVmd North arrnw Scala Revision n111111 :r' K. date klean high water line Di rile] pl-opes-ty/project boun(aar-v Location nulp with mimed strce:ls 0r NCSR numbers Original r-0ntours, propooS(xl contours, spot elevations, firlisbed floor elevations Details of r)ads, tlrainaf;e features, o llection Sy.Stems, 111(1 stor1mv.11 l- conlrol ulr:asurs,s WellanJs delineated, or a note: on plans Thal none exist Exisling draitwgc (including off -sit(:), drailuge easenrenls, pipe sizes, runoff cal(:ulati(:1ns DraiT1ilgc areas delineated Vegetated buffers (where required) VII. AGENT AUTI-IOI2IZATION If you wish t0 designWl" aulhori(y In Another• irrdivitlual or firm so []lilt 11mY 11my provide infor-nr<Ition on your twil"llf, please complete this secliul1. Designatrcl agent (indiviclua] 0r i'irlrr):___Stroud-Engineering,-P-.A._ !!tailing Aclrlre:ss:_—__—_-- 151-A Hwy_24 Cilv:._ ..._ Morehead City- - ----- — Stilt(:, - NC - --- 7ip:-_28557 T - Plionc: ( 2.52 ).... 247-7479 — _-. - _ I ax: (_252 --) 247-4098_ _---- VII. APPLICANT'S CERTIP ICATION I, (prim or. t> pe lr"um, ofper:wn lister! it? General Infru rrlarion, ilem Z) Richard Cass Flowers cerlil:y IIlilt the irrforrllali(nl i11010era 0n this permit ;lpplictrtion form is, 10 1ht: best of my knotivlctfgc, (:0r'rccl and th;1l the project will Ire; cUnslr'octed in corlfornunu.e with the approved p1mis, Ihat. the re10iretl deed 1'estriclkms and protective covenants will Ire rccnrc[ed. and lhal the pi-oposed project complies with the retluirenlerits of 15A NCAC 2E-E .l{1[1{1 $i nalrn•e:_- Date: .z 3s�D3 Dorm SWU-Iffl Version 3.99 Pige 4 of 4 Permit No. sGv��%'� �y3¢ /7Ci/ (to be provided by DWQ ) . State of North Carolina - Department of Environment and Natural Resources Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM WET DETENTION BASIN SUPPLEMENT This form may be photocopied for use as an original DW.Q,StQrmwater Management- Plan Review*, A complete stormwater management plait submittal includes an application form, a wet detention basin supplement for each basin, design calculations, and plans and specifications showing all basin and outlet structure details. I. PROJECT INFORMATION Project Name: Morehead .Prnfpssinnal Park Contact Person: Rnn Cii 1 1 i phar , P _ F _ Phone Number: (252 ) 247-7479 For projects with multiple basins,.specify which basin this worksheet applies to: 2 elevations Basin Bottom Elevation 3.70 ft. (floor of the basin) Permanent Pool Elevation' lo.2o' ft. .(elevation of the orifice) - Temporary Pool Elevation _ __11.71 ft. (elevation of the discharge structure overflow) areas Permanent Pool Surface Area 16.746 sq. ft. (water surface area at the orifice elevation) Drainage Area 3 �- ton ac. (on -site and off -site drainage to the basin) Impervious Area Pir.� - 5- '7 .(o ac, (on -site and off -site drainage to the basin volumes Permanent Pool Volume _77,002 _ cu. ft. (combined volume of main basin and forebay) Temporary Pool Volume 2a.694 cu. ft. .(volume detained.above the permanent pool) Forebay Volume 15,909 cu, ft. (approximately 20% of total volume) Other parameters SAIDA10jz7 surface area to drainage area ratio from DWQ table) Diameter of Orifice 2 in. (2 to 5 day temporary pool draw -dawn required) Design Rainfall 1 in, Design TSS Removal 2 90 % (minimum 85% required) Form SWU-IO2 Rev 3.99 Page 1 of. 4 Footnotes: When using the Division SA/DA tables, the correct:SAIDA ratio for permanent pool sizing should be computed based upon the actual impervious % and permanent pool depth. Linear interpolation should be employed to determine the correct value for non-' standard table entries. In the 20 coastal counties, the requirement for a vegetative filter may be waived if the wet detention basin is designed to provide 90% TSS removal. The NCDENR BMP manual provides design tables for both 85% TSS removal and 90% TSS removal. II. REQUIRED ITEMS CHECKLIST The following checklist outlines design requirements per the Stormwater Best Management Practices Manual (N.C. Department of Environment, Health and Natural Resources, February 1999) and Administrative Code Section: 15 A NCAC 2H .1008. Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If the applicant has designated an agent in the Stormwater Management Permit Application Form, the agent may initial below. If a requirement has not been met, attach justification. Applicants Initials a. The permanent pool depth is between 3 and 6 feet (required minimum of 3 feet). b. The forebay volume is approximately equal to 20% of the basin volume. c. The temporary pool controls runoff from the design storm event. d. The temporary pool draws down in 2 to 5 days. A e. If required, a 30-foot vegetative filter is provided at the outlet (include non -erosive flow ` calculations) W EyIS'G—f. The basin length to width ratio is greater than 3:L g. The basin side slopes above the permanent pool are no steeper than 3:1. h. A submerged and vegetated perimeter shelf with a slope of 6:1 or less (show detail). i. Vegetative cover above the permanent pool elevation is specified. j. A trash rack or similar device is provided for both the overflow and orifice. k. A recorded drainage easement is 'Provided for each basin including access to nearest tight - of -way. L If the basin is used for sediment and erosion control during construction, clean out of the basin is specified prior to use as a wet detention basin. _Q u rAl? � --m. A mechanism is specified which will drain the basin for maintenance or an emergency. III. WET DETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT 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) , 0 does oes not corporate a vegetated filter at the outlet, This system (check one) 0 do oes n corporate pretreatment other than a forebay. Form SWU-102 Rev 3.99 Page 2 of 4 Maintenance activities shall be performed as foIlows:.. I , After every significant runoff producing rainfall event and at least monthly: a. Inspect the wet detention basin system for sediment accumulation, erosion, trash accumulation, vegetated cover, and general condition. b. Check and clear the orifice of any obstructions such that drawdown of the temporary pool occurs within 2 to 5 days as designed. 2. Repair eroded areas immediately, re -seed as necessary to maintain good vegetative cover, mow vegetative cover to maintain a maximutn height of six inches; and remove trash as needed. 3. Inspect and repair the collection system (i.e. catch basins, piping, swales, riprap, etc.) quarterly to maintain proper functioning. 4. Remove accumulated sediment from the wet detention basin system semi-annually or when depth is reduced to 75% of the original design depth (see diagram below). Removed sediment shall be disposed of in an appropriate manner and shall be handled in -a manner that will not adversely impact water quality (i.e. stockpiling near a wet detention basin or stream, etc.). 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 4.875 feet in the main pond, the sediment shall be removed. When the permanent pool depth reads 2- 62 s _ feet in the forebay, the sediment shall be removed. BASIN -DIAGRAM (fill-in the blanks) Permanent Pool Elevation 10, 2� Sediment Re ovalEl. �$ � 75 0 ------- ----- - Sediment Removal Elevation 25 75% Bottom Ete gtian 6 70%---------------------------------------------f25%_/ ------ Bottom Etevation'i - 7�- FOREBAY MAIN POND 5. Remove cattails and other indigenous wetland plants when they cover 50% of the basin surface. These O, plants shall be encouraged to grow along the vegetated shelf and forebay berm. 10 5. if the basin must be drained for an emergency onto perform maintenance, the flushing of sediment through the emergency drain shall be minimized'to the maximum extent practical. Form SWU-102 Rev 3.99 Page 3 of.-4 10 7. All components of the wet detention basin system,shall be maintained in good working order. I acknowledge and agree by my signature below that [ am responsible for the performance of the seven 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. Print name: Richard Cass Flowers _ Title: Member Manager Address: 209 N. 35th Street, Morehead City, NC 28557 Phone: Note: The legally responsible party should not be a homeowneiss-association unless more than 50% of the lots have been sold and a resident of the subdivision -has been named the president. 1, Matthew Montanye a Notary Public for the State of North Carolina , County of Craven do hereby certify that _ Richard Cass Flower ._ ,.s personally appeared before me this Z day of ZAP. 3 , and acknowledge the due execution of the forgoing wet detention basin maintenance requirements. Witness my hand and official seal, afeet#,, ��. E1N � ......,. 0 ' t407A :� • A:mom :p •• �8L4G 9G •., Q. . . V . SEAL My commission expires October 29, 2003 Form 5WU-102 Rev 3.99 Page 4 of 4 Permit No. &Y L77 ln¢z%ml, (io be provided by DWQ) State of North Carolina Department of Environment and Natural Resources Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM WET DETENTION BASIN SUPPLEMENT This form may be photocopied for use as an original DWQStormwater Management Plan Review: A complete stormwater management plan submittal includes an application form, a wet detention basin supplement for each -basin, design calculations, and plans and specifications showing all basin and outlet structure details. 1. PROJECT INFORMATION Project Name: Morehead Professional Park Contact Person: Kevin Kuhn, P.E. Phone Number: 252 247-7479 For projects with multiple basins, specify which basin this worksheet applies to: 3 elevations Basin Bottom Elevation 2.71 ft. (floor- of the basin) Permanent Pool Elevation 8.51 ft. (elevation of the orifice) Temporary Pool Elevation 9.76 ft. (elevation of the discharge structure overflow) areas Permanent Pool Surface Area 11,653 sq. ft. (water surface area at the orif ce elevation) Drainage Area 6.34 ac. (on -site and off -site drainage to the basin) Impervious Area 4.50 ac. (on -site and off -site drainage to the basin)' volumes Permanent Pool Volume 39,504 cu. ft. (combined volume of main basin and forebay) Temporary Pool Volume 16,871 cu. ft. (volume detained above the permanent pool) Forebay Volume 7,989 cu. ft. (approximately 20% of total volume) Other parameters SA/DAJ 4.21 (surface area to drainage area ratio from DWQ table) Diameter of Orifice 2 in. (2 to 5 day temporary pool draw -down required) Design Rainfall 1 in. Design TSS Removal Z 90 % (minimum 85% required) Form S"-102 Rev 3.99 Page 1 of 4 Footnotes: When using the Division SA/DA tables, the correct SA/DA ratio for permanent pool sizing should be computed based -upon the actual impervious % and permanent pool depth. Linear interpolation should be employed to determine the correct value for non-' standard table entries. In the 20 coastal counties, the requirement for a vegetative filter may be waived if the wet detention basin is designed to provide 90% TSS removal. The NCDENR BMP manual provides design tables for both 85% TSS removal and 90% TSS removal. II. REQUIRED ITEMS CHECKLIST The following checklist outlines design requirements per the Stormwater Best Management Practices Manual (N.C. Department of Environment, Health and Natural Resources, February 1999) and Administrative Code Section: 15 A NCAC 2H .1008. Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If the applicant has designated an agent in the Stormwater Management Permit Application Form, the agent may initial below. If a requirement has not been met, attach justification. Applicants Initials �k5 it a. b. C. d. e. The permanent pool depth is between 3 and 6 feet (required minimum of 3 feet). The forebay volume is approximately equal to 20% of the basin volume. The temporary pool controls runoff from the design storm event. The temporary pool draws down in 2 to 5 days. If required, a 30-foot vegetative filter is provided at the outlet (include non -erosive flow calculations) The basin length to width ratio is greater than 3.1. The basin side slopes above the permanent pool are no steeper than 3:1. A submerged and vegetated perimeter shelf with a slope of 6:1 or less (show detail). Vegetative cover above the permanent pool elevation is specified. A trash rack or similar device is provided for both the overflow and orifice. A recorded drainage easement is provided for each basin including access to nearest right- of-way. If the basin is used for sediment and erosion control during construction, clean out of the basin is specified prior to use as a wet detention basin. m. A mechanism is specified which will drain the basin for maintenance or an emergency. III. WET DETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT 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) , 0 does does not incorporate a vegetated filter at the outlet. This system (check one) 0 does does not incorporate pretreatment other than a forebay. Form SWU-tot Rev 3.99 Page 2 of 4 Maintenance activities shall be performed as follows: 1. After every significant runoff producing rainfall event and at least monthly: a. Inspect the wet detention basin system for sediment accumulation, erosion, trash accumulation, vegetated cover, and general condition. b. Check and clear the orifice of any obstructions such that drawdown of the temporary pool occurs within 2 to 5 days as designed. 2. Repair eroded areas immediately, re -seed as necessary to maintain good vegetative cover, mow vegetative cover to maintain a maximum height of six inches, and remove trash as needed. 3. Inspect and repair the collection system (i.e. catch basins, piping, swales, riprap, etc.) quarterly to maintain proper functioning. 4. Remove accumulated sediment from the wet detention basin system semi-annually or when depth is reduced to 75% of the original design depth (see diagram below). Removed sediment shall be disposed of in an appropriate manner and shall be handled in a manner that will not adversely impact water quality (i.e. stockpiling near a wet detention basin or stream, etc.). 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 4.35 feet in the main pond, the sediment shall be removed. When the permanent pool depth reads 2.25 feet in the forebay, the sediment shall be removed. BASIN DIAGRAM (fill in the blanks) Permanent Pool Elevation 8. 51 Sediment Re oval El. 6. 26 175 0 -4.I6 0 _______ __ Sediment Removal Elevation 75/0 Bottom Ele ation 5.-5 1 3 ,, ------------------------------2: 71t--"----- - Bottom Elevation j 25% FOREBAY MAIN POND 5. Remove cattails and other indigenous wetland plants when they cover 50% of the basin surface. These plants shall be encouraged to grow along the vegetated shelf and forebay berm. 6. If the basin must be drained for an emergency or to perform maintenance, the flushing of sediment through the emergency drain shall be minimized to the maximum extent practical. . f Form SWU-102 Rev 3.99 Page 3 of 4 7. All components of the wet detention basin system,shall be maintained in good working order. I acknowledge and agree by my signature below that I am responsible for the performance of the seven maintenance procedures listed above. I agree to notify. DWQ of any probletns with the system or prior to any changes to the system or responsible party. Print name: Richard _Cass Flowers__ Title: Member Manager Address: 209 N. 35th Street, Morehead City, NC 28557 Phone: Signature: d,*XW—f- Date: 6- ZS r G 3 Note: The legally responsible party should not be a horneowners association unless more than 50% of the lots have been sold and a rdsideat of the subdivision has been named the president. I, Matthew Montane a Notary Public for the State of North Carolina County of Craven , do hereby certify that IRJ chard Qd5s Flowers personally appeared before me this Z day of and acknowledge the due execution of the forgoing wet detention basin maintenance requirements. Witness my hand and official seal, VLpiA�b, m C0 UN• �.••�• SEAL My commission expires__ _Qctober_29,2.003 Form SWU-102 Rev 3.99 Page 4 of 4. Pernat No. 5Gu ,? ? 03¢ Hbd , (to be provided by DWQ) State of North Carolina - Department of Environment and Natural Resources Division of -Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM WET DETENTION BASIN SUPPLEMENT This form may be photocopied for use as an original DWQ Stormwater Manazement Plan Review:' A complete stormwater management plan submittal includes an application form, a wet detention basin supplement for each basin, design calculations, and: plans and specifications showing all basin and outlet structure details. I. PROJECT INFORMATION Project Name: Morehead Professional Park Contact Person: Ron Cullipher, P.E. Phone Number: €252 247-7479 For projects with multiple basins, -specify which basin this worksheet applies to: 4 elevations Basin Bottom Elevation 7 50 ft. (floor of the basin) Permanent Pool Elevation 12. 5D ft. (elevation -of the orifice) - Temporary Pool Elevation _ t -_ Sri ft. (elevation of the discharge structure overflow) areas Permanent Pool Surface Area 6, non sq. ft. (water surface area at the orifice elevation) Drainage Area 2 22 ac. (on -site and off -site drainage to the basin) Impervious Area 1.89 ac. pe : (on -site and off -site drainage to the basin) volumes Permanent Pool Volume 18,640 cu: ft. (combined volume of main basin and forebay) Temporary Pool Volume 7, 300 cu. ft, (volume detained above the permanent pool) Forebay Volume. 4,201 cu. ft. {approximately 20% of total volume} Other parameters SAIDA6.1 (surface area to drainage area ratio from DWQ table).. Diameter of Orifice 1.5 in. (2 to 5 day temporary pool draw -down required) Design Rainfall I in. . Design TSS Removal 2 90 % (minimum 85% required) Form SWU-102 Rev 3.99 Page 1 of. 4 10• When using the Division SAIDA tables, the correct:SAIDA ratio for permanent pool sizing.should be computed based upon the actual impervious % and permanent pool depth. Linear interpolation should'be employed to determine the correct value for non- standard table entries. In the 20 coastal counties, the requirement for a vegetative filter may be waived if the wet detention basin is designed to provide 90% TSS removal. The NCDENR BMP manual provides'design tables for both 95% TSS removal and 90% TSS removal. II. REQUIRED ITEMS CHECKLIST The following checklist outlines design requirements per the Stormwater Best Management Practices Manual (N.C. Department of Environment, Health and Natural Resources, February 1999) and Administrative Code Section: I5 A NCAC 2H .1008. Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. if the applicant has designated an agent in the Stormwater Management Permit Application -Form, the agent may initial below. If a requirement has not been met, attach justification. Applicants Initials a. The permanent pool depth is between 3 and 6 feet (required minimum of 3 feet). b. The forebay volume is approximately equal to 20% of the basin volume. c. The temporary pool controls runoff from the design storm event. d. The temporary pool draws down in 2 to 5 days. e. If required, a 30-foot vegetative filter is provided at the outlet (include non -erosive flow calculations) The basin length to width ratio is greater than 3:1. g. The basin side slopes above the permanent pool are no steeper than 3.1. h. A submerged and vegetated perimeter shelf with a slope of 6:1 or less (show detail). i. Vegetative cover above the permanent pool elevation is'specified. . A trash rack or similar device is provided for both the overflow and orifice. k. A recorded drainage easement is provided for each basin including access to nearest right- of-way. �- I.- If the basin is used for sediment and erosion control during construction, clean out of the basin is specified prior to use as a wet detention basin. m. A mechanism is specified which will drain the basin for maintenance or an emergency. l III. WET DETENTION BASIN OPERATION AND MAINTENANCE.AGREEMENT 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) This system (check one) 0 does 0 does oes t incorporate a vegetated filter at the outlet. incorporate pretreatment other than a forebay. Form SWU-102 Rev 3.99 Page 2 of 4 Maintenance activities shall be performed as follows: 1. After every significant runoff producing rainfall event and at.least monthly: a. Inspect the wet detention basin system for sediment accumulation, erosion, trash accumulation, vegetated cover, and general condition. b. Check and clear the orifice of any obstructions such that drawdown of the temporary pool occurs within 2 to 5 days as designed. 2. Repair eroded areas immediately, re -seed as necessary to maintain good vegetative cover, mow vegetative cover to maintain a maximum height of six inches; and remove trash as needed. 3. Inspect and repair the collection system (i.e. catch basins, piping, swales, riprap, etc.) quarterly to maintain proper functioning. 4. Remove accumulated sediment from the wet detention basin system semi-annually or when depth is reduced to 75% of the original design depth (see.diagram below). Removed sediment shall be disposed of in an appropriate manner and shall be handled in� a manner that will not adversely impact water quality (i.e. stockpiling near a wet detention basin or stream, etc.). 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 3.75 feet in the main pond, the sediment shall be removed. When the permanent pool depth reads 2.625 feet in the forebay, the sediment shall be removed. BASIN DIAGRAM {fill in the blanks) Permanent Pool Elevation Z 2.50 Sediment Re oval El. 9.875 75 0 Sediment Removal Elevation 8.75 75% Bottom Ele ,�tion %--------------------------------7 : ------------- Bottom Elevation 50 25% FOREBAY MAIN POND 5. Remove cattails and other indigenous wetland plants when they cover 50% of the basin surface. These !, plants shall be encouraged to grow along the vegetated shelf and forebay berm. 6. If the basin must be drained for an emergency orto perform maintenance, the flushing of sediment through the emergency drain shall be minimized to the maximum extent practical. Form S W U-102 Rev 3.99 Page 3 of 4 7. All components of the wet detention basin systern•shall be maintained in good working order. I acknowledge and agree by my signature below that I am responsible for the performance of the seven 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. Print name: Richard Cass Fl owarG Title: Member Manager Address; 209 N. 35th Street, Morehead City, NC 28557 Phone:- -----_ e—D252) 241_ Signature:�L56l,GL�.aY.� G�fr l Date: 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, Matthew Montanye , a Notary Public for the State of North Carolina County of r-a-aa , do hereby certify that Aj or,arfi C'acc Fl,nwars personally appeared before me this Z day of and acknowledge the due execution of the forgoing wet detention basin maintenance requirements. Witness my hand and official seal, SEAL My commission expires October 29, 2003 Form SWU-102 Rev 3.99 Page 4 of 4 State StormwaWr,Management. Systems Permit No.;8 971034 Modification Morehead Professional Park Stormwater Permit No. SW8 971034 Mod. Carteret County Designer's Certification Page 1 of 2 I, }Eo nCJ d Cv (I LP)-)!-, as a duly registered yo 6o:& V"� effqWJU in the State of North Carolina, having been authorized to obs e (perio - weekly/full time) the construction of the project, (Project) for C � b N xsi) tP y LLC (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 are a part of this Certification. Noted deviations from approved plans and specifications. - 1MP�fU10QCk+3 A� (�J BE U01 L 4vcc- i-t� -pe C -r14-cpUg-H bF-V�SIIC, OS� , mb) d i by ly, p q SignaturQa C 6R,n,. Registration Number 13 ,3 Date "o,411111 loot" '•. �� OQ. ,..... 0 •• ` : q 7'� SEAL �= s 13343 = � � �6a G1NG •� � ' d. Cud-;1101%� ?�,114466*64 �C OCZ 1610a9 N. a State Sto,Mwater Management Systems Perrr,.�L-_�Io. SW8 971034 Modification rtification Requirements: Page 2 of 2 RDL-1. The drainage area to the system contains approximately the permitted E acreage. 2. The drainage area to the system contains no more than the permitted amount of built -upon area. Z VIZ 4 �c S f}�_3. All the built -upon area associated with the project is graded such that the SEC e runoff drains to the system. S 4 J 4. All roof drains are located such that the runoff is directed into the system. _5. The outlet/bypass structure elevations are per the approved plan. gft_6. The outlet structure is located per the approved plans. 7. Trash rack is provided on the outlet/bypass structure. inn _8. All slopes are grassed with permanent vegetation. ham. 9. Vegetated slopes are no steeper than 3:1. i,D< 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. 610"L 12. Required drawdown devices are correctly sized per the approved plans. gA�L13. All required design depths are provided. 14. All required parts of the system are provided, such as'a vegetated shelf, a forebay, and the vegetated filter. �15. The required dimensions of the system are provided, per the approved plan. cc: NCDENR-DWQ Regional Office Town of Morehead City Building Inspections E DWQ USE ONLY Date Received Fee Paid Permit Number Applicable Rules: ❑ Coastal SW -1995 ❑ Coastal SW - 2008 ❑ Ph II - 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 Department of Environment and Natural Resources Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM This form nray be photocopied for use as an original [. 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.): Morehead Professional Park 2. Location of Project (street address): Penny Lane &_ John Platt Drive City: Morehead_City _ _ _ _ County:Carteret Zip:28557 3. Directions to project (from nearest major intersection): From the intersection of H 24 & US Hwy 70 take Bridges Street Ext. approximately 3 miles to stop light. Turn left on Penny Lane. Project will he 1/2 mile on right 4. Latitude:34° 43' 50" N Longitude:760 45' 23" W of the main entrance to the project. II. PERMIT INFORMATION: 1. a. Specify whether project is (check one): ❑New ®Modification b.If this application is being submitted as the result of a modification to an existing permit, list the existing permit numberSW8-971034 MOD , its issue date (if known)9/11/03 _ _ , and the status of construction: []NotStarted []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 Ietter from DWQ 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: 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: MAR 3 1 2011 Fay: Fonn SWU-l01 Version 07Jun2010 Page I 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 ro'ect): Applicant/Organ ization:C & D Partnership, LLC O Signing Official & Title:Richard Cass Flowers Member/Manager ItIp�., b.Contact information for person listed in item I above: �o-`z ��2Y' S Street Address q� vPb IHRVAP] City:Atlantic Beach -,-State:NC Zip:28512 Mailing Address (if applicable):209 N 35 Street City:Morehead Ci State:NC Zip:28557 Phone: (252 1 241-2310 Fax: { ) Email: 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/Organization: Signing Official & Title: b.Contact information for person listed in item 2a above: Street Address: City: Mailing Address (if appl City: Phone: ( 1 Email: State: Zip: State: Fax: Zip: 3. a. (Optional) Print the name and title of another contact such as the project's construction supervisor or other person who can answer questions about the project: Other Contact Person/Organization: Signing Official & Title: b.Contact information for person listed in item 3a above: Mailing Address: City: State: Phone: (- - -- } Fax: Email: 4. Localjurisdiction for building permits: Point of Contact: Phone #: Zip: Form SWU-101 Version 07Jun2010 Page 2 ofb IV. PROJECT INFORMATION 1. In the space provided below, briefl summarize how the stormwater runoff wilt be treated. Wet von J Lv"4r �-o% -F55 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 WHITEOAK River basin. 4. Total Property Area: 21.70 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':21.70 acres ' Total project area shall be calculated to exclude the following the normal pool of impounded structures, the area between the batiks of streams and rivers, the area below the Nonnal Higglr Water (NHW) line or Mean High Water (MHW) litre, and coastal zetlands landward front the NHW (or MH1Nj lute. The resultant p. roject area is used to calculate overall percent built upon area (BUA). Non -coastal wetlands landward of tyre 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 = 58 % 9. How many drainage areas does the project have?3 (For high density, count 1 for each proposed engineered stormwater BMP. For lozv 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,."... ` , ._ . , 'Draina eArea�2 Drain a e�Area'3' " Draiiia' e Area'4' ' DrAinage.Area _ Receiving Stream Name Calico Creek Calico Creek Calico Creek Stream Class * SC SC SC Stream Index Number * 21-32 21-32 21-32 Total Drainage Area (sf) 466,092 SF 276,170 SF 96,703 SF On -site Drainage Area (sf) 466,092 SF 276,170 SF 96,703 SF Off -site Drainage Area (sf) 0 0 0 rT_ Proposed Impervious Area** (sQ 331,551 SF 195,818 SF 57,743 SF % Inip ervious Area total 71 % 71 % 60%if ►� ,� N 1�© lni ervious**'Surface Area_, o Draina e.A'rea.2, .`Drainii'e Area,3 :.1?rainy e Area 4 Df66real_ On -site Buildings/Lots (so 196,106 SF 179,702 SF 30,161 SF On -site Streets (so 60,598 SF 13,917 SF 13,311 SF >7 t On -site Parking (so - - On -site Sidewalks (so 5,729 SF 2,199 SF 2,878 SF Other on -site (so Future (so Off -site (SO Existing BUA*** (so 69,118 SF - 11,393 SF Total (so: 331,551 SF 195,818 SF 57,743 SF * Stream Class and Index Number can be determined at: http.- portal.ttcderrr.oU,/veb/wrj&s/cstr/classifications * 1111peruious area is defined as the built upon area including, brit not limited to, buildings, roads, parking areas, sirfezualks, gravel areas, etc. *** Report only that amount of existing BUA that will remain after development. Do riot report any existing BUA that is to be removed and which will be replaced by new BUA. I-orrn SWU-101 Version 07Jun2010 Page 3 of 6 11. How was the off -site impervious area listed above determined? Provide documentation. NA Projects in Union County: Contact DPVQ 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 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 http://portal.i)cdeiir.org/web/wqZwsZsu/bniR-rnanual, VI. SUBMITTAL REQUIREMENTS Only complete application packages will be accepted and reviewed by the Division of Water Quality (DWQ). A complete package includes all of the items listed below. A detailed application instruction sheet and BMP checklists are available from http_I/portal.ncdenr.orgf web/wq/ws/su/statesw/fortns_docs. The complete application package should be submitted to the appropriate DWQ Office. (The appropriate office may be found by locating project on the interactive online map at http://portal.ncdenr.org/web/wq/ws/su/maps.) Please indicate that the following required i.niormation, have been provided by initialing in the space provided for each item. All original documents MUST be signed and initialed in blue ink. Download the latest versions for each submitted application package from http://12ortal.ncdonr.org/web/wq/ws/su/statesw/forms dots. Initials 1. Original and one copy of the Stormwater Management Permit Application Form. fi 2. Original and one copy of the signed and notarized Deed Restrictions & Protective Covenants �G- Form. (if required as per Part VI1 below) 3. Original of the applicable Supplement Form(s) (sealed, signed and dated) and O&M agreement(s) for each BMP. 4. Permit application processing fee of $505 payable to NCDENR. (For an Express review, refer to http://www.envhelp.org/pages/onestopexpress.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/managementfor the project. This is required in addition to the brief summary provided in the Project Information, item 1. 6. A USGS map identifying the site location. If the receiving stream is reported as class SA or the receiving stream drains to class SA waters within 1/2 mile of the site boundary, include the'/z mile radius on the map. 7. Sealed, signed and dated calculations. 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 impounded structures, the banks of streams and rivers, the MHW or NHW line of to waters, and any coastal wetlands landward of the MHW or NHW lines. • Delineate the vegetated buffer landward from the normal pool elevation of impounde 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). Forn SWU-101 Version 071Un2010 Page 4 of 6 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: Schedule a site visit for DWQ to verify tire SHWF prior to submittal, (9I0) 796-7378.) 10. A copy of the most current property deed. Deed book: 977 r Page No: z l �G' 11. For corporations and limited liability corporations (LLC): Provide documentation from the NC F—)Cr Secretary of State or other official documentation, which supports the titles and positions held by the persons listed in Contact Information, item 1a, 2a, and/or 3a per NCAC 21-1.1003(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. http://www.secretary-state.nc.us/Corporatioiis/CSearcii.aspx V1I. 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 http://portal.ncdenr.org/web/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 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:Stroud Engineering PA Consulting Firm: II Mailing Address: Sl N r h ✓S` -zq City: /`�a^��4 lir�f-� State: 111C Zip: ST's S-7 Phone: ( 2 Sz- ) Zq 7 - 7 Y 7 Fax: ( ) Email: IX. PROPERTY OWNER AUTHORIZATION (if Contact Information, item 2 has been filled out, complete this section) I, (print or type name of person Iisted in Contact Information, item 2a) Richard Cass Flowers certify that I own the property identified in this permit application, and thus give permission to (print or hjpe name of person listed in Contact Information, item Ia) with (print or type name of organization listed in Contact Information, item 1a) to develop the project as currently proposed. A copy of the Iease 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. RECEIVED MAR 3 1 2011 BY: Form SWU-101 Version 07Jun2010 Page 5 of As the legal property owner I acknowledge, understand, and agree by my signature below, that if my designated abent (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 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 assessmept9f civil penalties of up to $25,000 per day, pursuant to NCGS 143-215.6. / Signature: GG�"�'� Date: I, /h.�j� ���✓ a Notary Public for the State of �L County of C.�..//W"/ do hereby certify that 4'C444 L' �410*✓4/ personally appeared before me this1I day ofand acknowledge the due execution of the application for a stormwater permit. Witness my hand and official seal, .Z' SEAL My commission expires S- /7 - .20�3 X. APPLICANT'S CERTIFICATION I, (print or type naive of person listed in Contact Information, item Ia) Richard Cass Flowers 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 stater rules under_15A NCAC 2H .1000, SL 2006-246 (Ph. II - Post Construction) or SL 2008-21.1. Signature: Date: 3.122-lr li/✓ a Notary Public for the State of 7 � County of do hereby certify that 9. personally appeared before me this 2 1`^day of 04 , Z-/ / , and acknowledge the due execution of the application for a stormwater permit. Witness my hand and official seal, SEAL My commission expires _ 9 - / 7- Z e!-e 3_ MAR 3 I Z011 Form SWU-101 Version 07Jun2010 Page 6 of 6 R Permit No. SW8971034 (to he provided by DWO_) State of North Carolina Department of Environment and Natural Resources Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM WET DETENTION BASIN SUPPLEMENT This form n►ay be photocopied for use as an original DWO Stormwater Management Plan Review: A complete stormwater management plan submittal includes an application form, a wet detention basin supplement for each basin, design calculations, and plans and specifications showing all basin and outlet structure details. I. PROJECT INFORMATION Proiect Name: Morehead Professional Park Contact Person: Ronald D. Cullipher, P.E. Phone Number: (252-) 247-7479 For projects with multiple basins, specify which basin this workshect applies to: 3 elevations Basin Bottom Elevation 2.71 ft. (floor of the basin) Permanent Pool Elevation 8.51 ft. (elevation of the orifice) Temporary Pool Elevation 9.76 ft. (elevation of the discharge structure overflow) 7 areas Permanent Pool Surface Area 11,653 sq. ft. (water srnfface area at the orifice elevation) Drainage Area 6.34 ac. (on -site and off -.cite drainage to the basin) [tnpervious Arca 4.50 ac. (on -site and of drainage to the basin) volumes Permanent Pool Volume 39,504 cu. ft. (combined volutne of main basin and forebay) Temporary Pool Volume 16,871 cu. ft. (volume detained above the permanent pool) Forebay Volume 7,989 cu. ft. (approximately 20% of total volume) Other parameters SAIDA I 4.21 (surface area to drainage area ratio fi-om DWQ table) Diameter of Orifice 2 ill. (2 to 5 day temporary pool draw -down requtrecl] Design Rainfall 1 in. C�i Design TSS Removal Z 90 `% (minimum 85% required) �`% i D MAR 31 2011 DY: i�onn SWU-102 Rev 3.99 Page I of 4 1 Footnotes: When using the Division SA/DA tables, the correct SA/DA ratio for pernianent pool sizing should be computed based upon the actual impervious % and permanent pool depth. Linear interpolation should be employed to determine tic correct value for non- standard table entries. z In the 20 coastal counties, the requirement [or a vegetative Filter may be waived if the wct detention basin is designed to provide 90% TSS removal. The NCDI:NR BMP manual provides design tables For both 85 TSS removal and 90'%, TSS removal. 11. REQUIRED ITEMS CHECKLIST The following checklist outlines design requirements per the Stormwater Best Management Practices Manual (N.C. Dcparttmcnt of Environment, health and Natural Resources, February 1999) and Administrative Code Section: 15 A NCAC 2H .1008. Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If the applicant has designated an agent in the Stormwater Management Permit Application Form, the agent may initial below. If a requirement has not been met, attach justification. Ap licants Initials a. o b. C. C. C— d. C. The permanent pool depth is between 3 and 6 feet (required minimum of 3 feet). The forebay volume is approximately equal to 20% of the basin volume. The temporary pool controls runoff from the design storm event, The temporary pool draws down in 2 to 5 days. If required, a 30-foot vegetative filter is provided at the outlet (include non -erosive flow calculations) The basin length to width ratio is greater than 3:1. The basin side slopes above the permanent pool are no steeper than 3:1. A submerged and vegetated perimeter shelf with a slope of 6:1 or less (show detail). Vegetative cover above the pcnmancnt pool elevation is specified. A trash rack or similar device is provided for both the overflow and orifice. A recorded drainage casement is provided for each basin including access to nearest right- of-way. If the basin is used for sediment and erosion control during construction, clean out of the basin is specified prior to use as a wet detention basin. OA U C m. A mechanism is specified which will drain the basin for maintenance or an emergency. III. WET DETENTION BASIN OPERATION AND MAINTENANCE AGREE The wet detention basin system is defined as the wet detention basin, pretreatment incl tding forcbays and vegetated filter if one is provided. L MgR 31 2011 This system (check one) doe incorporate a vegetated filter at thc�le�— This system (check one) 0 does x0 does no incorporate pretreatment other than a forebay. Form S W U-102 Rev 3.99 Page 2 of 4 Maintenance activities shall be performed as follows: 1. After every significant runoff producing rainfall event and at least monthly: a. Inspect the wet detention basin system for sediment accumulation, erosion, trash accumulation, vegetated cover, and general condition. b. Check and clear the orifice of any obstructions such that drawdown of the temporary pool occurs within 2 to 5 days as designed. 2. Repair eroded areas immediately, re -seed as necessary to maintain good vegetative cover, mow vegetative cover to maintain a maximum height of six inches, and remove trash as needed. 3. Inspect and repair the collection system (i.e. catch basins, piping, swales, riprap, etc.) quarterly to maintain proper functioning. 4. Remove accumulated sediment from the wet detention basin system semi-annually or when depth is reduced to 75% of the original design depth (see diagram below). Removed sediment shall be disposed of in an appropriate manner and shall be handled in a manner that will not adversely impact water quality (i.e. stockpiling near a wet detention basin or stream, etc.). 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 4 .35 feet in the main pond, the sediment shall be removed. When the permanent pool depth reads 2 .25 feet in the forebay, the sediment shall be removed. BASIN DIAGRAM (fill in the blanks) Permanent Pool Elevation 8 • 51 Sediment Ren oval El. 6 . 26 75` Sediment Removal Elevation 4 . 16 75% Bottom Ele anon 5 . 51 %-------------------------------------------- ----- Bottom Elevation 2 • 7 1 25% FORE13AY MA[N POND 5. Remove cattails and other indigenous wetland plants when they cover 50% of the basin surface. These plants shall be encouraged to grow along the vegetated shelf and forebay berm. 6. If the basin must be drained for an emergency or to perform maintenance, the emergency drain shall be minimized to the maximum extent practical. MAR 3 1 2011 t through Form SW U-1 U2 Rcv 3.99 Page 3 of 4 tL l : 7. All components of the wet detention basin system shall be maintained in good working order. I acknowledge and agree by my signature below that I am responsible for the performance of the seven 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. Print name: Richard Cass Flowers Title: Member Manager Address: 701 N 35th Street, Morehead City, NC 28S57 Phone: — 2S2-241-2310 �%�� I MOWA�A Note: The legally responsible Party should not be a homeowners association unless more than 50%) or the lots have been sold and a resident or the subdivision has been named the president. r - 1, %/,(�, l �� , a Notary Public for the State of , County of f , do hereby certify that -Y /W ,—„- personally appeared before me this ZS day of �.s✓�y , and acknowledge the due execution of the forgoing wet detention basin maintenance requirements. Witness my hand and official seal, SEAL My eotnnttsslon expires q-1 - A r- 9_ MAR 3 1 20f1 Fonn SWU-102 Rev 3.99 Page 4 ol'4 , V e Pcrmit No. sw8971034 (to 6e provided by DiVQJ State of North Carolina Department of Environment and Natural Resources Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM WET DETENTION BASIN SUPPLEMENT This form tray be photocopied for use as an original DWO Stormwatcr Management Plan Review: A complete stormwater' management plan submittal includes an application form, a wet detention basin supplement for each basin, design calculations, and plans and specifications showing all basin and outlet structure details. 1. PROJECT INFORMATION Project Name: Morehead Professional Park Contact Person: Ronald D. Cullipher, P.E. Phone Number: (252- ) 247-7479 For projects with multiple basins, specify which basin this workshcct applies to: 4 elevations Basin Bottom Elevation 7,50 ft. Permanent Pool Elevation 12.50 ft. Temporary Pool Elevation 13.54 ft. C1reCLS Permanent Pool Surface Area 6,020 Drainage Area 2.22 Impervious Area 1.89 vo1 unres Permanent Pool Voltumc Temporary Pool Volume Forebay Volume Other parameters SAIDAI Diameter of'Onlice Design Rainfall Design TSS Removal 2 Form SWU-102 Rev 3.99 (floor of the basin) (elevatiota of the orifice) (elevation of the discharge Structure ot,efloly) sq. ft. (water Sul face area at the orifice elevation) ac. (on -site and cuff -site drainage 10 the basin) ae. (on -sire and off --sire drainage to the hasin) 18,640 cu. ft. (combined volume of'main basin and fiorebay) 7,300 cu. ft. (volutue detained above the Permanent pool) 4,201 cu. ft. (approximately 20% of total volume) 6.1 (sutface area to drainage area ratio ft-om DWQ table) 1.5 in, (2 to 5 dery temporarj, pool drem,'-down required 1 in. VC'�UFi� 90 % (minimum 85% required) MAR 3 i ��11 FAY Page 1 of 4 Footnotes: When using the Division SA/DA tables, the correct SA/DA ratio t'or permanent pool sizing should be computed based upon the actual impervious %, and permanent pool depth. Linear interpolation should be employed to determine the correct value for non- standard table entries. 2 In the 20 coastal counties, the requirement for a vegetative filter may be waived il' the wet detention basin is designed to provide 90% TSS removal. The NCDENR BMP manual provides design tables for both 85% TSS removal and 90% TSS removal. 11. REQUIRED ITEMS CHECKLIST The following checklist outlines design requirements per the Stormwater Best Management Practices Manual (N.C. Department of Environment, Health and Natural Resources, February 1999) and Administrative Code Section: 15 A NCAC 2H .1008. Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If the applicant has designated an agent in the Stormwater Management Permit Application Form, the agent may initial below. If a requirement has not been met, attach justification. Applicants Initials a. b. C. d. C. N/A EXISTING f. C g. O C. h. C i. C j. k. The permanent pool depth is between 3 and 6 feet (required minimum of 3 feet). The forcbay volumc is approximately equal to 20% of the basin volumc. The temporary pool controls runoff from the design storm event. The temporary pool draws down in 2 to 5 days. If required, a 30-foot vegetative filter is provided at the outlet (include non -erosive flow calculations) The basin length to width ratio is greater than 3:1. The basin side slopes above the permanent pool are no steeper than 3:1. A submerged and vegetated perimeter shelf with a slope of 6:1 or less (show detail). Vegetative cover above the permanent pool elevation is specified. A trash rack or similar device is provided for both the overflow and orifice. A recorded drainage casement is provided for each basin including access to nearest right- of-way. If the basin is used for sedimcnt and erosion control during construction, clean out of the basin is specified prior to use as a wet detention basin. PUYIP!�Qo m. A mechanism is specified which will drain the basin for maintenance or an emergency. Ill. WET DETENTION BASIN OPERATION AND MAINTENANCE AGRE7L ,vED The wet detention basin system is defined as the wet detention basin, pretreatment tncludtnffo�e�ay�cbtld th vegetated filter if one is provided. ti.a x .=== This system (check one) 0 does x0 does incorporate a vegetated filter at the outlet. This system (check one) 0 does does not incorporate pretreatment other than a forebay. Form SWU-102 Rev 3.99 Page 2 of4 A Y Maintenance activities shall be performed as follows: 1. After every significant runoff producing rainfall event and at least monthly: a. Inspect the wet detention basin system for sediment accumulation, erosion, trash accumulation, vegetated cover, and general condition. b. Check and clear the orifice of any obstructions such that drawdown of the temporary pool occurs within 2 to 5 days as designed. 2. Repair eroded areas immediately, rc-sccd as necessary to maintain good vegetative cover, mow vegetative cover to maintain a maximum height of six inches, and remove trash as needed. 3. Inspect and repair the collection system (i.e. catch basins, piping, swales, riprap, etc.) quarterly to maintain proper functioning. 4. Remove accumulated sediment from the wet detention basin system semi-annually or when depth is reduced to 75% of the original design depth (see diagram below). Removed sediment shall be disposed of in an appropriate manner and shall be handled in a manner that will not adversely impact water quality (i.e. stockpiling near a wet detention basin or stream, etc.). 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 3 .75 feet in the main pond, the sediment shall be removed. When the permanent pool depth reads 2 . G25 feet in the forebay, the sediment shall be removed. BASIN DIAGRAM (r1ll ill the hlallkv) Permanent Pool Elevation 12 . 50 Sediment Ren oval El. 9 . 8 75 75' o -------__W__-_ __ Sediment Removal Elevation 8 . 75 75%� Bottom EIc -ation %--"----- ------------------------------------ ------ Bottom Elevation 7 • 5 0 25% FORE SAY MAIN POND 5. Remove cattails and other indigenous wetland plants when they cover 54% of the basin surface. These plants shall be encouraged to grow along the vegetated shelf and forebay berm. 6. If the basin must be drained for an emergency or to perform maintenance, the flushing_o£scdiinent through the emergency drain shall be minimized to the maximum extent practical. FIv�� MAR 3 1 2011 Form SWU-102 Rev 3,99 Page 3 of 7. All components of the wet detention basin system shall be fnaintained in good working order. I acknowledge and agree by my signature below that I am responsible for the performancc of the seven 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. Print name: Richard Cass Flowers Title: Member Manager Address: 701 N 35th Street, Morehead City, NC 28557 Phone Signat Date:_ 3 ^LZ -f f Y Note: The legally responsible party should not be a homeowners association unless more fhan 50% of the lots have been sold and a resident or the subdivision has been named the president. 1, /k-1�v `a,/�/ , a Notary Public for the State of County of .�.y�.� , do hereby certify that C— 1���.,•,•� personally appeared before me this _ Z !— day of 0" 4- -e— , ZOY , and acknowledge the due execution of the forgoing wet detention basin maintenance requirements. Witness my hand and official seal, r SEAL My commission expires / —/ 7- ZAI� 8.. MAR 31 2011 Form SWU-102 Rev 3.99 Page 4 or4 �, • � � - �., ... .. .. t t High Density Commercial Subdivisions ^� Deed Restrictions & Protective Convenances In accordance with Title 15 NCAC 2H.1000 and S.L. 2006-246, the Management Regulations, deed restrictions and protective covenants are required for High Density Commercial Subdivisions where lots will be subdivided and sold and runoff will be treated in an engineered stormwater control facility. Deed restrictions and protective covenants are necessary to ensure that the development maintains a built -upon area consistent with the design criteria used to size the stormwater control facility. 1, _Richard Cass Flowers , acknowledge, affirm and agree by my signature below, that I will cause the following deed restrictions and covenants to be recorded prior to the sale of any lot within the project kowr as Ina Ce`%e" Pre P3j1Anril Pf,1C_ 1. The following covenants are intended to ensure ongoing compliance with State Stormwater Management Permit Number , as issued by the Division of Water Quality under the Stormwater Management Regulations. 2. The State of North Carolina is made a beneficiary of these covenants to the extent necessary to maintain compliance with the stormwater management permit. 3. These covenants are to run with the land and be binding on all persons and parties claiming under them. 4. The covenants pertaining to stormwater may not be altered or rescinded without the express written consent of the State of North Carolina, Division of Water Quality. 5. Alteration of the drainage as shown on the approved plan may not take place without the concurrence of the Division of Water Quality. 6. The maximum built -upon area per lot, in square feet, is as listed below: Lot # BUA Lot # BUA Lot # BUA Lot # BUA 1 34,361 ,SF 2A 49,174 SF 3A 31,372 SF 5 41,287 SF 6 18,035 SF 7 27,378 SF 8A 33,000 SF 9 22,764 SF 10A 23,000 SF 11A 30,991 SF 12 14,083 SF 13-1 61,088 SF This allotted amount includes any built -upon area constructed within the lot property boundaries, and that portion of the right-of-way between the front lot line and the edge of the pavement. Built upon area includes, but is not limited to, structures, asphalt, concrete, gravel, brick, stone, slate, coquina and parking areas, but does not include raised, open wood decking, or the water surface of swimming pools. T All runoff from the built -upon areas on the lot must drain into the permitted system. This may be accomplished through a variety of means including roof drain gutters which drain to the street, grading the lot to drain toward the street, or grading perimeter swales to collect the lot runoff and directing them into a component of the stormwater collection system. Lots that will naturally drain into the system are not required to provide these additional measures. 8. The owner of each lot, whose ownership is not retained by the permittee, is required to submit a separate stormwater permit application to the Division of Water Quality and receive a permit prior to construction. 9. The project and each lot will maintain a 30** foot wide vegetated buffer between all impervious areas and surface waters. **50 foot for projects located in the 20 coastal counties. MAR 31 2011 Form DRPC-1 Rev.2 05Nov2009 Page 1 of 2 High Density Commercial Subdivisions Deed Restrictions & Protective Convenances Signature: Date: 3 - I, A / � , a Notary Public in the State of AAG- , County of G.v�✓�y _ , do hereby certify that �i �-! ,c,� C.! �s.� _ personally appeared before me this the day of �----� , 20 ! / , and acknowledge th6 due execution of the foregoing instrument. Witness my hand and official seal, SEAL Signature My Commission expires !n— / 7f Zvi r Form DRPC-1 Rev.2 05Nov2009 Page 2 of 2