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HomeMy WebLinkAboutSW8140416_HISTORICAL FILE_20180823 (2)STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO. SW8 If 04 16 DOC TYPE ❑ CURRENT PERMIT ❑ APPROVED PLANS M, HISTORICAL FILE ❑ COMPLIANCE EVALUATION INSPECTION DOC DATE Zol Q o$ 23 YYYYMMDD Energy, Mineral & Land Resources fi101 R ON MENTAL OUALI tY August 23, 2018 Mr. Michael Pollak, Managea Signature Top Sail vC, Ltd. LP & Signature Top Sail GP, LLC 9337 13 Katy Preewav #377 Houston. Ta 77024 ROY COOPER Go'c"10, MICHAEL S. REGAN secremry WILLIAM E. (TOBY) VINSON, JR. Inferinl 0irerwr Subject: State StonnwaterAlanagentent Vermil No. SW8140416 )Iodificalion Wyndwater Phase 2 (addition of Phase 9lots in Phase 2 area) I- igh Density Subdivision Wet'Detention Pond Project. Pender Comity Dear Ml'. Pollak: The Wilmington Regional Office received a complete, modified State Stormwater Management Permit Application for Wyndwater Phase 2 (,Phase 9 lots) on April 18, 2018. Staffreview 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 and Session Law 2008-211. We are forwarding modified Permit. No, SW8 1404) 6 MOD dated August 23, 20'18, for the construction, operation and maintenance of the Bh4P's and built -upon area associated with the subject project. This permit shall be effective from the date of issuance until July 3, 2022, and shall be 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, certification of the BMP's, procedures for changing 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 certify the BIMP's, to transfer the permit, or to renew the permit, will result in future compliance problems. The following modifications are included and covered by this permit: I. This phase 9 of development accounts for the previously permitted "future" impervious area of 60,300 sf in Phase 2. 2. The new impervious area will be allocated as a total of 40,500 sf for 9 additional lots, and will include 19,800 sf for additional pavement. 3. Overall impervious area and drainage area for Phase 2 remain the same. Ifany parts, requirements, or limitations contained in this permit: are unacceptable, you have the right to request an adjudicatory hearing by fling a written petition with the Office of Administrative Hearings (OAH). The written petition must conform to Chapter 150E of the North Carolina General Statutes, and must be filed with the OAll within thirty (30) days of receipt of this permit. You should contact the OAH with all questions regarding the filing fee (if a filing fee is required) and/or the details of the filing process at 6714 Mail Service Center, Raleigh, NC 27699-6714, or via telephone at 919-431-3000, of visit their website at www.NCOAH.com. Unless such demands arc made this permit shall be final and binding. slalcor Ne"t h Coioline 1Prnirnruni nl al Quuliy 1 e1'1er9y. t,-17numi :md Land iirsnm �cs W11rolun Rv9r'nal0Mcc I EV c_;ildnd Uri,e Extcll kw I wiicdn,.11nn,kC 25405 State, Sterm'.nacr Pcnnit NO SW 140i6 Page 20f2 ICyou have any questions, or need additional infornnau n concerning this rnaI(or . plc sc contacI Steve, Pt eY ir1 i.lte. 1ViImington k.egional Office, al. (910) 796-721 S. Sincctely, ..� • William 1' 'ffo&v) Vinson; 11 I'B; CT St C;P!vL lnierim Direwn Diviiion of, .no�r�v,-Minom) and Land Rusolaces C;I)SIsr.}p' OStarnIW,3t0rWcl-tuiLS k 1)1 o je t;l20i 4'110416 1-11) \! 0 1 5 0 8 p rmi1,140,!16 cc: bonniCcr Pollak, I :vans, Tegisit:red .gent, SInatuN Ap Sail N Lad. 4307 Pt^eble Drip';, WiIrmnsrfou. 1�C' 28d1 GnIry 'S_ Pape, IIp"— CSSP C:o11SIII ing, 1,LLC I'endk�r I QU1rty }'banning De1131111 ent TAMmingion Repional CWhce Sionnwater File ECEIVE. AUG 0 5 2019 Dv. 51mr01N.:(1aca.r:9:o I iim'Ro"',' wdl Qt'.)lil q u In g, t. hnc:'i m>'.L""iEo;. w-rV. N'ii;_i.y w RMmM N a,, 112 e Cn dunl 10m; L x 11 i*'.. i'n'; Mr, ,I M: 1Brt0'o to job : E State Stormwater Management Systems Permit No, SW8 140416 MOD STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENTAL QUALITY DIVISION OF ENERGY, MINERAL AND LAND RESOURCES STATE STORMWATER MANAGEMENT PERMIT HIGH DENSITY SUBDIVISION 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 Signature Top Sail NC Ltd. LP Wyndwater Phase 2 (Addition of Phase 9 lots) Sloop Point Road, Hampstead, Pender County FOR THE construction, operation and maintenance of one (1) wet detention pond in compliance with the provisions of 15A NCAC 2H .1000 and Session Law 2008-211 (hereafter 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 (hereafter referred to as the Division or DEMLR) and considered a part of this permit. This permit shall be effective from the date of issuance until July 3, 2022 and shall be subject to the following specified conditions and limitations: I. DESIGN STANDARDS This permit is effective only with respect to the nature and volume of stormwater described in the application and other supporting data. The subdivision is permitted for 70 lots, each limited to a maximum amount of built - upon area as indicated in Section 11.4 (f) of this permit. This stormwater system has been approved for the management of stormwater runoff as described in Section 1.8 of this permit. The runoff from all built -upon area within the permitted drainage area(s) of this project must be directed into the permitted stormwater control measure(s). The stormwater control measure has been designed to handle the runoff from 407,335 square feet of impervious area. 4. The maximum built -upon area allowed for the entire subdivision is 407,335 square feet. The drainage area will be limited to the amount of built -upon area indicated in Sections 1.3 and 1.8 of this permit, and per approved plans. Page 1 of 9 State Stormwater Management Systems Permit No. SW8 140416 MOD 6. A 50' wide vegetative buffer must be provided and maintained adjacent surface waters, measured horizontally from and perpendicular to the normal pool of impounded structures, the top of bank of both sides of streams and rivers and the mean high water line of tidal waters. All runoff being directed into wetlands shall flow into and through those wetlands at a non -erosive velocity. 8. The following design criteria have been permitted for the wet detention pond and it must be provided and maintained at the design condition. Pond 1 a. Drainage Area, acres: Onsite; ft2: Offsite, ft2: 24.01 1,046,055 0 b. Total Impervious Surfaces; ft2: Onsite, ft2: Offsite ft2: 407,335 0 c. Average Pond Design Depth, feet: 4.5 d. TSS Removal Efficiency: 90% e. Design Storm, inches: 1.5 f. Permanent Pool PP Elevation. FMSL: 20.5 g. Permitted PP Surface Area, ft2: 33,673 h. Temporary Storage Elevation; FMSL: 21.84 i. Permitted Storage Volume, ft3: 52,492 j, Predevelopment 1 yr-24 hr. discharge rate, cfs: 0.95 k. Controlling Orifice, inch 0 pipe: 4.0 I. Orifice Flow Rate, cfs: 0.28 m. PP Volume, ft3: 138,674 n. Foreb2Y Volume; ft3: 29,015 o. Maximum Fountain Horsepower: 1/2 p. Receiving Stream/River Basin: Mullet Run / Cape Fear q. Stream Index Number: 18-87-9-1 r. Classification of Water Body: SA; HWQ over''/z mile II. SCHEDULE OF COMPLIANCE No person or entity, including the permittee, shall alter any component of the approved stormwater system shown on the approved plans unless and until the Division has approved of the revised plan. 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. During construction, erosion shall be kept to a minimum and any eroded areas of the system will be repaired immediately. If the stormwater system is 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. Prior to the sale of any lot, the following deed restrictions must be recorded: The following covenants are intended to ensure ongoing compliance with State Stormwater Management Permit Number SW8 140416, as issued by the Division'of Energy, Mineral and Land Resources under NCAC 2H.1000. The State of North Carolina is made a beneficiary of these covenants to the extent necessary to maintain compliance with the Stormwater Management Permit. Page 2 of 9 State Stormwater Management Systems Permit No. SW8 140416 MOD 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 Division. e. Alteration of the drainage as shown on the approved plans may not take place without the concurrence of the Division. f. The maximum built -upon area per lot is as shown in the table below: Lot BUA (sf) Lot BUA (sf) Ph.9 Lots BUA (sf) 44 4500 75 4500 342 4500 45 4500 76 4500 343 4500 46 4500 77 4500 344 4500 47 4500 78 4500 345 4500 48 1 4500 79 4500 346 4500 49 4500 80 4500 347 4500 50 4500 81 4500 348 4500 51 4500 82 4500 349 4500 52 4500 83 4500 350 4500 53 4500 84 4500 _ 54 4500 85 3738 55 4500 86 3628 _ 56 4500 87 3628 _ 57 4500 88 3628 58 4500 89 3628 _ 59 4500 90 3628 60 4500 91 3628 61 4500 92 4043 62 4500 93 3665 63 4500 94 3987 64 4500 95 3688 65 4500 96 3688 66 4500 97 3911 67 4500 98 3625 68 4500 99 3625 69 4500 100 3625 70 4500 101 3625 71 4500 102 3625 72 4500 103 3625 73 4500 104 3698 74 4500 Total Lot BUA 298,936 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. Page 3 of 9 State Stormwater Management Systems Permit No. SW8 140416 MOD g. For those lots within CAMA's Area of Environmental Concern, where DCM calculates a different maximum lot built -upon area, the governing lot BUA shall be the more restrictive of the two numbers. h. All runoff from the built -upon areas on the lot must drain into the permitted system. This may be accomplished through providing roof drain gutters, which drain to the pond or street, grading the lot to drain toward the street or directly into the pond, or grading perimeter swales and directing them into the pond or street. i. Built -upon area in excess of the permitted amount will require a permit modification. j. All affected lots shall maintain a 50' wide vegetative buffer adjacent to surface waters, measured horizontally from and perpendicular to the normal pool of impounded structures, the top of bank of each side of streams and rivers and the mean high water line of tidal waters. k. Any individual or entity found to be in noncompliance with the provisions of a stormwater management permit or the requirements of the Stormwater Rules is subject to enforcement procedures as set forth in G.S. 143, Article 21. 5. 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, the signature of the Permittee, the deed book number and page, and the stamp/signature of the Register of Deeds. 6. If permeable pavement BUA credit is desired, the permittee must submit a request to modify this permit to incorporate such language as required by the Division. The request to modify must include a proposed amendment to the deed restrictions and protective covenants for the subdivision, and a soils report identifying the type of soil, the Seasonal High Water Table elevation and the infiltration rate. Upon the successful completion of a permit modification, the individual lot owners that request to utilize permeable pavements shall submit the necessary forms and documentation to the permittee, or a designated agent, and receive approval prior to construction of the permeable pavement. The permittee shall review all lot plans for new construction and any subsequent modifications and additions, for compliance with the conditions of this permit. The permittee shall not approve any lot plans where the maximum allowed built -upon area has been exceeded, or where revisions to the grading or to the storm drainage system are proposed unless and until a permit modification has been approved by the Division. The permittee is responsible for the routine monitoring of the project for compliance with the built -upon area limits, grading, and the storm drainage system established by this permit, the permit documents, the approved plans, and the recorded deed restrictions. The permittee shall notify any lot owner that is found to be in noncompliance with the conditions of this permit in writing, and shall require timely resolution. The permittee shall at all times provide the operation and maintenance necessary to assure that all components of the permitted stormwater system function at design condition. The approved Operation and Maintenance Agreement is incorporated by reference into this permit and must be followed in its entirety and maintenance must occur at the scheduled intervals. 10. Records of maintenance activities must be kept and made available upon request to authorized personnel of the Division. The records will indicate the date, activity, name of person performing the work and what actions were taken. Page 4 of 9 State Stormwaler Management Systems Permit No. SW8 140416 MOD 11. If the permanent pool volume is greater than 30,000 cubic feet, a decorative spray fountain will be allowed in the stormwater treatment system, subject to the following criteria: a. The fountain must draw its water from less than 2' below the permanent pool surface. b. Separated units, where the nozzle, pump and intake are connected by tubing, may be used only if they draw water from the surface in the deepest part of the pond. C. The falling water from the fountain must be centered in the pond, away from the shoreline. d. The maximum horsepower for the fountain's pump is based on the permanent pool volume. The maximum pump power for a fountain in this pond is 1/2 hp. 12. The facilities shall be constructed in accordance with the conditions of this permit, the approved plans and specifications, and other supporting data. 13. Upon completion of construction, prior to issuance of a Certificate of Occupancy, and prior to operation of this permitted facility, the permittee shall cause a certification from an appropriate designer for the system installed to be submitted, 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. 14. All stormwater collection and treatment systems must be located in either public rights - of -way, dedicated common areas or recorded easements. The final plats for the project will be recorded showing all such rights -of -way, common areas and easements, in accordance with the approved plans. Access to the stormwater facilities for inspection and maintenance shall be maintained via appropriate recorded easements at all times. 15. The permittee shall submit to the Director and shall have received approval for revised plans, specifications, and calculations prior to construction, for any modification to the approved plans, including, but not limited to, those listed below: a. Any revision to any item shown on the approved plans, including the stormwater management measures, built -upon area, details, etc. b. Redesign or addition to the approved amount of built -upon area or to the drainage area. C. Further development, subdivision, acquisition, lease or sale of any, all or part of the project area. 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. d. Filling in, altering, or piping of any vegetative conveyance shown on the approved plan. e. The construction of any future BUA listed on the application. 16. Prior to transfer of the permit, the stormwater facilities will be inspected by Division personnel. The project and the stormwater facility must be in substantial compliance with all permit conditions. Any items not in substantial compliance must be repaired, replaced or restored to design condition prior to the transfer, Records of maintenance activities performed to date will be required. 17. 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 5 of 9 Stale Stormwater Management Systems Permit No. SW8 140416 MOD III. GENERAL CONDITIONS Any individual or entity found to be in noncompliance with the provisions of a stormwater management permit or the Stormwater rules is subject to enforcement procedures as set forth in NCGS 143 Article 21. 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. 3. In the event that the facilities fail to perform satisfactorily 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. Additional or replacement stormwater management systems shall receive a permit from the Division prior to construction. This permit is not transferable to any person or entity except after notice to and approval by the Director. The permittee shall submit a completed and signed Name/Ownership Change Form, accompanied by the supporting documentation as listed on the form, to the Division of Energy, Mineral and Land Resources at least 60 days prior to any one or more of the following events: a. An ownership change including the sale or conveyance of the project area in whole or in part, except in the case of an individual lot sale that is made subject to the recorded deed restrictions; b. The sale or conveyance of the common areas to a Homeowner's or Property Owner's Association, subject to the requirements of Session Law 2011-256; C. Bankruptcy; d. Foreclosure, subject to the requirements of Session Law 2013-121; e. Dissolution of the partnership or corporate entity, subject to NCGS 57D-2-01(e) and NCGS 57D-6-07, f. A name change of the current permittee; g. A name change of the project; h. A mailing address change of the permittee; 5. 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, in whole or in part, nor the conveyance of common area to a third party constitutes an approved transfer of the stormwater permit. 6. The permittee grants DEMLR Staff permission to enter the property during normal business hours for the purpose of inspecting all components of the permitted stormwater management facility. 7. The permit issued shall continue in force and effect until modified, revoked, terminated or renewed. The permit may be modified, revoked and reissued or terminated for cause. The filing of a request for permit modification, revocation and re -issuance or termination does not stay any permit condition. 8. Approved plans, calculations, supplement forms, operation and maintenance agreements and specifications for this project are incorporated by reference and are enforceable parts of the permit. A copy of the approved plans and specifications shall be maintained on file by the Permittee at all times. 9. Unless specified elsewhere, permanent seeding requirements for the stormwater control measure must follow the guidelines established in the North Carolina Erosion and Sediment Control Planning and Design Manual. Page 6 of 9 State Stormwater Management Systems Permit No. SW8 140416 MOD 10. The issuance of this permit does not prohibit the Director from reopening and modifying the permit, revoking and reissuing the permit, or terminating the permit as allowed by the laws, rules and regulations contained in Session Law 2006-246, Title 15A NCAC 2H.1000. and NCGS 143-215.1 et.al. 11. The permittee shall submit a permit renewal application request 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. Permit modified and reissued this the 23rd day of August 2018. NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION ,,,,;William E.gToby) Vinson, Jr., PE, CPESC, CPM, Interim Director Division of Energy, Mineral and Land Resources By Authority of the Environmental Management Commission Permit Number SW8 140416 Page 7 of 9 Pusey, Steven From: Pusey, Steven Sent: Thursday, June 28, 2018 5:05 PM To: Pape, Garry (gpape@gsp-consulting.com) Subject: Wyndwater Phase 2 Mod; SW8 140416 Importance: High Garry, I'm reviewing the subject application to modify permit SW8140416, originally issued in 2014 and modified in 2016. The wet pond supplement shows Phase 2 and everything in the file references Phase 2. However, your deed restriction document references Phase 9 and your O&M Agreement references Phase 9. Please explain. Thanks, ,Steve Puseu Steve Pusey, El Environmental Engineer Division of Energy, Mineral and Land Resources — State Stormwater Program Department of Environmental Quality 910 796 7215 office 910 796 7334 direct Steven. ousev(ccb ncdenr.00v 127 Cardinal Drive Ext Wilmington, NC 28405 Emrvvy� ARnvrof nnd(andRvources - o,woxwonuwwm. Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to third parties. Before printing this email, please consider your budget and the environment. WIN 14- MA 11 X,k 11c, . ., , . 'r I,, I A-, 1 1 � — 0 P - A :1 ' 1 % I% -I L" L A "C' -Jfl -;10V:WW"W; JPITI OpWr S Trio olq W v Vc I r w no woopo," *;pr aw A in- WI QW! Ov J I Mz WA &I'M% i" J- . YL .- "Ps6s, Own Pusey, Steven From: Garry Pape <gpape@gsp-consulting.com> Sent: Thursday, April 19, 2018 3:48 PM To: Pusey, Steven Subject: [External] Re: Wyndwater Phase 2; SW8 140416 o External email. Do not click links or open attachments unless verified. Send all suspicious email as an attachment to Thanks Steve. This one should be pretty simple. The BUA has already been permitted as future and just showing the plan for that BUA. - Garry Garry S. Pape, P.E. GSP CONSULTING, PLLC. 6626-C Gordon Road Wilmington, NC 28411 91G-442-7870 gpape@gsp-consulting.com ------- Original message -------- From: "Pusey, Steven" <steven.pusey@ncdenr.gov> Date: 4/19/18 3:43 PM (GMT-05:00) To: Garry Pape <gpape@gsp-consulting.com> Subject: FW: Wyndwater Phase 2; SW8 140416 FYI From: Pusey, Steven Sent: Thursday, April 19, 2018 3:43 PM To: 'mike@signature-companies.com' <mike@signature-companies.com> Subject: Wyndwater Phase 2; SW8 140416 The Wilmington Regional Office of the Division of Energy, Mineral, and Land Resources (Stormwater Section) accepted the Stormwater Permit Application for a major modification on April 18, 2018. The project has been assigned to Steve Pusey and you will be notified if additional information is needed. Please be advised that the construction of built -upon area may not commence until the Stormwater Permit is issued. Thank you. Steve Puseu Steve Pusey, El Environmental Engineer Division of Energy, Mineral and Land Resources — State Stormwater Program Department of Environmental Quality 910 796 7215 office AD) OP S Q 3 WW ! 09"; Aw, up IjA' !mt,71I.";!. :? " 7 'I I'- WtilflIjUl. 11T.; 'I R T -- ')G � jovww:cw tu;. i.A7th J" guy, 11JO '1PY:Z tf)1; L;- i4;U`, c. 11-, rw", VVOWN ji, I A( MCI U#Uq no a MEG . 1'-A! .(f — 1 1.,. !L . '.,* U. i J 4 Z-,On:'n 1: kJ 1 7 a, I :, . Pusey, Steven From: Pusey, Steven Sent: Thursday, April 19, 2018 3:43 PM To: 'mike@signature-companies.com' Subject: Wyndwater Phase 2; SW8 140416 The Wilmington Regional Office of the Division of Energy, Mineral, and Land Resources (Stormwater Section) accepted the Stormwater Permit Application for a major modification on April 18, 2018. The project has been assigned to Steve Pusey and you will be notified if additional information is needed. Please be advised that the construction of built -upon area may not commence until the Stormwater Permit is issued. Thank you. Steve PuSe Steve Pusey, El Environmental Engineer Division of Energy, Mineral and Land Resources — State Stormwater Program Department of Environmental Quality 910 796 7215 office 910 796 7334 direct Steven. ouseva ncden r.aov 127 Cardinal Drive Ext. Wilmington, NC 26405 N�aPa�aa�,o�.rr� _ wonnm�awmr Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to third parties. Before printing this email, please consider your budget and the environment. on, it V L! low V J !"Ca ULM tjb!"C IP, A Am 1 4 fJ, . e,--. Pusey, Steven From: Pusey, Steven Sent: Thursday, April 19, 2018 3:44 PM To: Pape, Garry (gpape@gsp-consulting.com) Subject: FW: Wyndwater Phase 2; SW8 140416 FYI From: Pusey, Steven Sent: Thursday, April 19, 2018 3:43 PM To: 'mike@signature-companies.com' <mike@signature-companies.com> Subject: Wyndwater Phase 2; SW8 140416 The Wilmington Regional Office of the Division of Energy, Mineral, and Land Resources (Stormwater Section) accepted the Stormwater Permit Application for a major modification on April 18, 2018. The project has been assigned to Steve Pusey and you will be notified if additional information is needed. Please be advised that the construction of built -upon area may not commence until the Stormwater Permit is issued. Thank you. Steve Pusey Steve Pusey, El Environmental Engineer Division of Energy, Mineral and Land Resources — State Stormwater Program Department of Environmental Quality 910 796 7215 office 910 796 7334 direct Steven. ousev(cDnodenr.aov 127 Cardinal Drive Ext Wilmington, NC 28405 t,. Enwppp. Mnwral and LandRecwvtvs WHgnM W Ol W0.R� Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to third parties. Before printing this email, please consider your budget and the environment. 7 . YNA Elul A 1 100: V. now a rK ?!;I win: A h"M mv soon X! =NVY ;I. 1996 ON 3 '6010 OF Kj Pt 0 J t*-;:'f !,;.t -, - -KA n Noun 0 ill AN W 41 A "I Wa a nj Iwo QQmb,liyf�!; y,pjq ,nN TOR 1 0 Pat 1; V.. TO: ,GSP CONSULTING 6626 Gordon Road, Unit C WILMINGTON, NORTH CAROLINA, 28411 (910) 442-7870 FAX (910) 799.6659 NCDEQ-DLEMR 127 Cardinal Drive Ext. Wilmington, NC 28405 WE ARE SENDING YOU ® Fee Check ❑ Copy of Letter LETTER OF TR/�NSI�/IITTWL DATE 0 /2 /i8 JOB NO. 201 -0008 ATTENTION ATTENTION PHONE# RE: W ndwater Phase Stormwater permit (Conventional) ❑ Attached ❑ Under separate cover via ® Permit Applications ® Plans ® Calculations ❑ Change order ❑ Diskette ❑ the following items: ❑ Specifications COPIES DESCRIPTION 2 Sets of plans & calculations for state stormwater permit 2 Stormwater Management Permit Application Form 1 Wet Detention Basin Supplement & Checklist 1 Wet Detention Basin Operation and Maintenance Agreement 1 High Density Residential Development Deed Restrictions & Covenants 1 Application fee for $505.00 for conventional review THESE ARE TRANSMITTED as checked below: ® For approval ❑ Approved as submitted ❑ Resubmit copies for approval ❑ Foryour use ❑ Approved as noted ❑ Submit copies for distribution ❑ As requested ❑ Returned for corrections ❑ Return corrected prints ❑ For review and comment ❑— ❑ FOR BIDS DUE ❑ PRINTS RETURNED REMARKS: COPYTO: File SIGNED: y If enclosures are not as noted, kindly notify us at once. TO US APR 18 2018 vt Garry S. N C iLo 11L 6 `JB 'rL. '. APR 11 lulu P.E. Application Completeness Review Checklist Project Name: 0yid Lpt���_t — pk�Se i Date Delivered to WIRO:ApF BIMS Received/Accepted Date: <- ( ya Project County/Location: P—e-ncfi— . *BIMS Acknowledged Date: fRule(s): M2017 Coastal 12_110& Coastal 01995 Coastal ❑Phase II MUniversal F-11988 Coastal l Action: New Major Mod Minor Mod / Renewal / Transfer TypeHsi/ LD / LD Overall / HD &LD Combo General Permit / Offsite / Exempt / Rescission ((�� 5CM Type(s): �� � {z�Q(}, _ YX, ,, Development Ty�px-\`Commercial / Residential / Other *New Permit #: Existing Permit #: I Lyp Lf OPE Cert on File? Offsite to SWB: Master PE Cert on File? For New or Tralhsferr-ed Permits Permittee is: Stream Class: Property Owner(s) DDeveloper Lessee Purchaser IJ lr6A EISA Map ORW Map raperworK Emailed Engineer on: upplement(s) (1 original per BMP) 0&M with correct/original signatures (1 original per BMP except LS/VFS and swoles) Application with correct/original signatures orp or LLC: Sig. Auth. per SoS or Si nature Authorization letter or re ort /L �3505 (within 5mo) FiNo Fee ck# 995-1 Soils Report: w/SHWT or General Report alculations (signed/sealed) Deed Restrictions, if subdivided: & Notarized Template Covenants Email Address: Design Engineer ail Address: Property Owner Deed Email Address: Lessee Lease Agreement Email Address: Purchaser Purchase Agreement Email Address: Developer Email Address: HOA Representative Recorded Plats F-150% or more Lots Sold List roject Narrative EIUSGS Map Plans 01"s� ts Wetlands: Delineated or No Wetlands MVicinity Map oject Boundaries 121ceg4'1 ayout (proposed BUA dimensions) aps etails (roads, cul-de-sacs, curbs, sidewalks, BMPs, Buildings, etc) ffxisting Conditions Landscape Plan rading E Seal REVIEWER NAME: NOTES TO REVIEWER: *Enter BIMS Acknowledged Date on this Sheet 1 - **FOR NEW Projects -Enter New Permit # on 5{ t Supplements & Deed Restiction Templates. G:WQ\\\Reference Library\Procedures\Checklists\Completeness Review Checklist 2018 03 13 DEMLR USE ONLY Dale Received Fee Paid Permit Number 05 A� 2 Sw 4o -7 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 Energy, Mineral and Land Resources r %-+ STORMWATER MANAGEMENT PERMIT APPLICATION F RM 201a T his firm may be photocopied for use as an original APR 18 L GENERAL INFORMATION BV:-- 1. Project Name (subdivision, facility, or establishment name - should be consistent with project name on plans, specifications, letters, operation and maintenance agreements, etc.): Wlmdwater - Phase 2 2. Location of Project (street address): Wyndwater Subdivision City: Hampstead Cou nty: PenderLi p:28443 3. Directions to project (from nearest major intersection): Project is approximately 2 mi heading southeast on Sloop Point Loop Road from US 17/Sloop Point Loop 4. Latitude:34° 24' 28" N Longitude:77° 37' 57" W of the main entrance to the project. 11. PERMIT INFORMATION: 1.a. Specify whether project is (check one): []New ®Modification ❑ Renewal w/ Modificationt t Renea als With modifications also requires SWU-102 — Rencund Application Fornt b.If this application is being submitted as the result of a modification to an existing permit, list the existing permit numberSW8 140416 Mod , its issue date (if known)luly 15, 2016 , and the status of construction: [-]Not Started ®Partially Completed* Q Completed* *provide a designer's certification 2. Specify the type of project (check one): ❑Low Density ®I-ligh 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 DEMI,R 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): ❑LAMA Major ❑NPDES Industrial Stormwater ®Sedimentation/ Eros ion Control: 2.96 ac of Disturbed Area ❑404/401 Permit: Proposed Impacts b.If any of these permits have already been acquired please provide the Project Name, Project/Permit Number, issue date and the type of each permit: 5. Is the project located within 5 miles of a public airport? ®No ❑Yes If yes, see S.L. 2012-200, Part Vl: httVi //portal ncdenr org/web/ir/rules-and-regulations Form SWU-101 Version Oct. 31, 2013 Page I of Ill. COMPACT 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 protect): Applicant/Organization:Sienature'rop Sail NC LP Signing Official & Title:Michael H. Pollak - Manager b.Contact information for person listed in item la above: Street Address:9337B Katy Freeway #377 City:Houston State:TX Zip:77024 Mailing Address (if applicable): City: State: Zip: Phone: (_713 ) 822-3891 Fax: Email: m i ke©si gnatu re -corn panies.com Z01$ c. Please check the appropriate box. The applicant listed above is: APR ® The property owner (Skip to Contact Information, item 3a) ❑ Lessee* (Attach a copy of the lease agreement and complete Contact Information, item 2g\'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 Properly 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/, Signing Official & b.Contact information for person listed in item 2a above: Street Add City: Mailing Address (if City: Phone: ( ) Ema State: Fax:-- Zi 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 Signing Official & Ti b.Contact information for person listed in item 3a above: Mailing Address: City: State: Phone: ( ) _ Fax: ( ) 4. Local jurisdiction for building permits: Pender County Point of Contact: Phone #: Form SWU-101 Version Oct. 31, 2013 Page 2 of ` IV. PROJECT INFORMATION 1. In the space provided below, briefly summarize how the stormwater runoff will be treated. The stornn water for this project will be treated by an existing wet detention basin 2. a. If claiming vested rights, identify the supporting documents provided and the date they were approved: ❑ Approval of a Site Specific Development Plan or PUD Approval Date: ❑ Valid Building Permit Issued Date: ❑ Other: Date: b.If claiming vested rights, identify the regulation(s) the project has been designed in accordance with: ❑ Coastal SW -1995 ❑ Ph II - Post Construction 3. Stormwater runoff from this project drains to the Cape Fear River basin. 4. Total Property Area: 24.01 acres 5. Total Coastal Wetlands Area: 0 acres 6. Total Surface Water Area: 0 acres L✓ 7. Total Property Area (4) - Total Coastal Wetlands Area (5) -'total Surface Water Are . � u ,4fol'i'f`t'"' Area+:24.0'1 acres pp J ft 2018 Fatal project area shall He calculated to exclude thefollowing: the norrunl Ftool ofimtttoun a st �r)�t5lres, he area between the banks of streams and rivers, the area below the Nornml High Water (NM I r or Mean High Water (MHW) line, and coastal Wetlands londumrd from the NHW (or MHI1 line. The resultar t njeet nr a.is.used-tn­ calculate overall percent built upon area (BUA). No -coastal Wetlands landward of the N 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 = 38.9 % 9. I -low many drainage areas does the project have?l (For high density, count 1 for each proposed engineered stornnWater BMP. For loco 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 Drainage Area _ Drainage Area _ Receiving Stream Name Mullet Run Stream Class * SA, HQW > 0.5 mile Stream Index Number * 18-87-9-1 Total Drainage Area (sf) 1,046,055 On -site Drainage Area (so 1,046,055 Off -site Drainage Area (so Proposed Impervious Area**(so 407,335 % Impervious Area** total 38.9 impervious** Surface Area Draina e Area 1 Draina e Area _ Drainage Area _ Drainage Area _ On -site Buildings/Lots (so 40,500 On -site Streets (so 19,800 On -site Parkin (so On -site Sidewalks (so Other on -site (so Future(so Off -site (so L'xistin BUA*** (so 347,035 Total (so: 1 407,335 Stream Class and Index Nuruber can be determined at: Irttt).//PortnLnedenr.orghoebhutl[ps/csu/clnssiFrcations » Innpervious area is defined as the built upon area including, but not liruited to, buildings, rands, parking areas, sidewalks, gravel areas, etc. Fonn SWU-101 Version Oct. 31, 2013 Page 3 of 6 ***Report only that amount of existing BUA that will remain after development. Do not report any existing BUA that is to be removed and which Will be replaced by new BUA. 11. Flow was the off -site impervious area listed above determined? Provide documentation. Projects in Union County: Contact DEMLR Central Office staff to check if the project is located within a Threatened & Endangered Species watershed that may be subject to more stringent stornttvater requirennentr as per 15A NCAC 02B .0600. V. SUPPLEM17NT 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'//i2ortaI.ncclenr.org/web/wci/ws/su/bap-manual. VI. SUBMITTAL REQUIREMENTS Only complete application packages will be accepted and reviewed by the Division of Energy, Mineral and Land Resources (DEMLR). A complete package includes all of the items listed below. A detailed application instruction sheet and BMP checklists are available from httu'//portalncdenr.org/web/wq/ws/su/statesw/forms docs. The complete application package should be submitted to the appropriate DEMLR Office. (The appropriate office may be found by locating project on the interactive online map athttL)://12ortii.nctlei)t-.org/web/wq/ws/su/­inaLis.) Please indicate that the following required information 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•//lortal.ncdennorg web/wq/ws/su/statesw/forms docs. Ini s 1. Original and one copy of the Stormwater Management Permit Application Form. 2. Original and one copy of the signed and notarized Deed Restrictions & Protective Covenants Form. (if required as per Part VII below) 3. Original of the applicable Supplement Form(s) (sealed, signed and dated) and O&M agreement(s) for each BMP. 1 , 4. Permit application processing fee of $505 payable to NCDENR. (For an Express review, refer to http•/ /www.ciivhe]p.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.) ,r,s. ^ 5. A detailed narrative (one to two pages) describing the stormmm water treatment/anageent fo'r' (� e 6. A USGS map identifying the site location. If the receiving stream is reported as class SA or the N I� receiving stream drains to class SA waters within V2 mile of the site boundary, include the'/z mile radius on the map. 7. Sealed, signed and dated calculations (one copy). 8. Two sets of plans folded to 8.5" x 14" (sealed, signed, & dated), including:° a. Development/Project name. b. Engineer and firm. 20t8 c. Location map with named streets and NCSR numbers. APR i 8 d. Legend. e. North arrow. BY: - f. Scale. g. Revision number and dates. h. Identify all surface waters on the plans by delineating the normal pool elevation of impounded structures, the banks of streams and rivers, the MHW or NHW line of tidal waters, and any coastal wetlands landward of the MFI W or NHW lines. • Delineate the vegetated buffer landward from the normal pool elevation of impounded structures, the banks of streams or rivers, and the MI-IW (or NI-IW) 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. I. 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). Form SWU-101 Version Oct. 31, 2013 Page 4 of 6 p. Vegetated buffers (where required). 1n n 9. Copy of any applicable soils report with the associated SI-IWT elevations (Please identify_ j elevations in addition to depths) as well as a map of the boring locations with the existing elevations and boring logs. Include an 8.5"xll" copy of the NRCS County Soils map with the project area clearly delineated. For projects with infiltration BMPs, the report should also include the soil type, expected infiltration rate, and the method of determining the infiltration rate. (infiltration Devices submitted to WiRO: Schedule a site visit for DEMLR to verifij the SHWT prior to submittal, (910) 796-7378.) n lo. A copy of the most current property deed. Deed book: 4654 Page No: 2102 11'. For corporations and limited liability corporations (LLC): Provide documentation from the NC Secretary of State or other official documentation, which supports the titles and positions held by the persons listed in Contact Information, item la, 2a, and/or 3a per 15A NCAC 2H.1003(e). The corporation or LLC must be listed as an active corporation in good standing with the NC Secretary of State, otherwise the application will be returned. litti2://www.secretary.stite.nc.us/Corporatioiis/CSearcii.asi2x 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 BOA 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://12ortal.ncdenr.org/web/Ir/state- siormwater-forms does. Download the latest versions for each submittal. In the instances where the applicant is different than the property owner, it is the responsibility of the property owner to sign the deed restrictions and protective covenants form while the applicant is responsible for ensuring that the deed restrictions are recorded. By the notarized signature(s) below, the permit holder(s) certify that the recorded property restrictions and protective covenants for this project, if required, shall include all the items required in the permit and listed on the forms available on the website, that the covenants will be binding on all parties and persons claiming under them, that they will run with the land, that the required covenants cannot be changed or deleted without concurrence from the NC DEMLR, and that they will be recorded prior to the sale of any lot. VIII. CONSULTANT INFORMATION AND AUTHORIZATION Applicant: Complete this section if you wish to designate authority to another individual and/or firm (such as a consulting engineer and/or firm) so that they may provide information on your behalf for this project (such as addressing requests for additional information). Consulting Engineer:Garry S. Pape P.E. Consulting Firm: GSP Consulting PLl C Mailing Address:6626 Gordon Road Unit C icity:Wihnington State:NC Zip:28411 I (Phone: (910 ) 442-7870 Fax: (910 ) 799-6659 I]iniaii:gpilpe@gsp-consultijig.com gsp-consulting.com IX. PROPERTY OWNER AUTHORIZATION (if Contact Information, item 2 has been filled out, complete this section) i 1, (print or type name of person listed in Contact Information, item 2a) certify that I own the property identified in this permit application, and thus give permission to (print or type name of person listed in Contact Information, item 1a) with (print or type name of organization listed in Contact Information, item la) to develop the project as currently proposed. A copy of the lease agreement or pending property sales contract has been provided with the submittal, which indicates the party responsible for the operation and maintenance of the stormwater system. r � LI APR 1 8 2018 I i Form SWU-101 Version Oct. 31, 2013 Page 5 of 6 AI the legal property owner I acknowledge, understand, and agree b m signature below, that if m designated g P P h' g g Y Y g Y g agent (entity listed in Contact Information, item 1) dissolves their company and/or cancels or defaults on their lease agreement, or pending sale, responsibility for compliance with the DEMLR Stormwater permit reverts back to me, the property owner. As the property owner, it is my responsibility to notify DEMLR immediately and submit a completed Name/Ownership Change Form within 30 days; otherwise I will be operating a stormwater treatment facility without a valid permit. 1 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. a Notary Public for the State of , County of do hereby certify that before me this _ day of personally appeared , and acknowledge the due execution of the application for a stormwater permit. Witness my hand and official seal, 63W." nP My commission expires t� APR 1 8 2Gi3 X. APPLICANT'S CERTIFICATION 1, (print or hjpe name of person listed in Contact Information, item la) Michael H. Pollak 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 w' 1 be recorded, and that the ro sed project complies with the requirements of the applicable stor ru 1 N AC ny other applicable state stormwwate, requi ements. Signna'ture: \D1ate: ✓ Z�P �O 1, Gf fr{ S ��yt a Notary lPublic 'for the State of 0Oi-'Y (4ra 6k bountyof OIL 11]�aN .'do hereby certify that Kki%J 4- -UC6 �-- personally appeared G �t before me this � ay of M•/✓LL 2VIV, and knowledge tly6 due execution of the application for a stormwater permit. Witness my hand and official seal, :0G-kY 1S Pw%li. NOTARY PUBL\G SEAL. My commission expires 0 (� 13 �w Form SWU-101 Version Oct. 31, 2013 Page 6 of sul 7 IgW4116 ,kDA Operation & Maintenance Aqreement Project Name: Project Location: on Wyndwater Phase 9 Wyndwater Subdivision The BMP(s) on this project include (check all that apply & Bioretention Cell Quantity: Dry Detention Basin Quantity: Grassed Swale Quantity: Green Roof Quantity: Infiltration Basin Quantity: Infiltration Trench Quantity: Level SpreaderNFS Quantity: Permeable Pavement Quantity: Proprietary System Quantity: Rainwater Harvesting Quantity: Sand Filter Quantity: This maintenance O&M tables Location(s): Location(s): Location(s): Location(s): Location(s): Location(s): Location(s): Location(s): Location(s): Location(s): Location(s): Stormwater Welland Quantity: Location(s): Wet Detention Basin Quantity: 9No Location(s): Disconnected Impervious Area Present: Location(s): User Defined BMP Present: Location(s): Vill De aaaea I acknowledge and agree by my signature below that I am responsible for the performance of the maintenance procedures Responsible Party: Title & Organization: Street address: City, state, zip: Phone number(s): Email: Signature: I, Garry S. Pape a Notary Public for the State of North Carolina County of New Hanover do h r y c rtify that Michael H. Pollak Michael H. Pollak Manager - Signature Top Sail NC, LP 9337B Katy Freeway #377 Houston, Texas 77024 713-822-3891 mike -companiescopf co personally appeared before me this_ acknowledge the due execution oft Operations Witness my hand and official seal, NOTARY PtJBUG Date: _ day of 1'\ Zv 1Er, and Maintenance Agreement. My commission expires: April 13, 2020 ►� 11/� � y� ,tl� C� All 18 Maintenance The detention basin system is defined as the wet detention basin, pretreatment including forebays and the vegetated filter if one is provided i. 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). I 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 i 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: Potential problem: How I will remediate the problem: The entire BMP Trash/debris is present. Remove the trash/debris. The perimeter of the BMP Areas of bare soil and/or Regrade the soil if necessary to remove the gully, and then plant a erosive gullies have formed. 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 a height of approximately six inches. long. The inliet device The pipe is clogged. Unclog the pipe. Dispose of the sediment off -site. The pipe is cracked or Replace the pipe. otherwise damaged. Erosion is occurring in the Regrade the swale if necessary to smooth it over and provide erosion swale. control devices such as reinforced turf matting or riprap to avoid future problems with erosion. Stone verge is clogged or Remove sediment and replace with clean stone. covered in sediment (if applicable). The forebay Sediment has accumulated to Search for the source of the sediment and remedy the problem if a depth greater than the possible. Remove the sediment and dispose of it in a location where it original design depth for will not cause impacts to streams or the BMP. sediment storage. 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 practices show that pruning is needed I to maintain optimal plant health. Plants are dead, diseased or Determine the source of the problem: soils, hydrology, disease, etc. dying. 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 haad !f pegtrdiae is used, wipe it on the plants rather than spr IN i�g pr`y t>r0 I STORM-EZ Version 1.4 APR 1 8 2G18 O&M Manual 3/2212018 Page 3 of 5 l Wet Detention Pond Maintenance Requirements (Continued) The main treatment area Sediment has accumulated to Search for the source of the sediment and remedy the problem if a depth greater than the possible. Remove the sediment and dispose of it in a location where it original design sediment will not cause impacts to streams or the BMP. storage depth. Algal growth covers over 50% Consult a professional to remove and control the algal growth. of the area. Cattails, phragmites or other Remove the plants by wiping them with pesticide (do not spray). invasive plants cover 50% of the basin surface. The embankment Shrubs have started to grow Remove shrubs immediately. on the embankment. I Evidence of muskrat or Use traps to remove muskrats and consult a professional to remove beaver activity is present. beavers. A tree has started to grow on Consult a dam safety specialist to remove the tree. the embankment. An annual inspection by an Make all needed repairs. appropriate professional shows that the embankment needs repair. (if applicable) 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 Department of Environment and Natural damage have occurred at the Resources Regional Office. j outlet. 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. IP APR 1 a 201a ev:f ISTORM-EZ 3/2212018 Version 1.4 08M Manual Page 4 of U WET POND ID FOREBAY MAIN POND 0 Permanent Pool El. 20.5 Permanent Pool El. IE Temporary Pool El: 21.84 Temporary Pool El:Pretreatment other NoClean Out Depth: 5.5 Clean Out Depth:than forIebay? Sediment Removal El: 15 Sediment Removal El:Has Vag. Filter? No Bottom Elevation: 14 Bottom Elevation: "^ � c; % APR 18 2018 I STORM-EZ 3/22/2018 Version 1.4 O&M Manual Page 5 of '•I Permit No.SW9 (HD I« A101, (to be provided by DWD) _ b^F WA rZ, h r CDEN NCDENR 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 IIQ must be printed, filled out and submitted along with all of the required information. name wynawaier erase z t person Garry S, Pape, P.E. number 910442-7670 area number Characteristics lags area :ivious area, post -development Design rainfall depth Storage Volume: Non -SA Waters Minimum volume required Volume provided Storage Volume: SA Waters 1.5' runog volume Pre -development 1-yr, 24-hr runoff Post -development 1-yr, 24-hr mnoff Minimum volume required ' Volume provided Peak Flow Calculations Is the pre/post control of the lyr 24hr storm peak flow required? 1-yr, 24-hr rainfall depth Rational C, pre -development Rational C, post -development Rainfall intensity: 1-yr, 24-hr storm Pre -development 1-yr, 24-hr peak Bow Post -development 1-yr, 24-hr peak Bow PielPost 1-yr, 24-hr peak Bow control Elevations Temporary pool elevation Permanent pool elevation SHWT elevation (approx. at the pen. pool elevation) Top of 10B vegetated shelf elevation Bolcom of 10B 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 1,046,055 ft? 407,335 hr 38.94 1.5 in 52,363 ft' 52,492 ft' it, ft' If It B3 N (Y or N) OK, volume provided is equal to or in excess of volume required. 3.8 in 0.20 (unitless) 0.49 (unitless) 5.00 infl r OK 24,01 ft/sec 59.08 B3lsec 35.07 ft/sec 21.84 fmsl 20.50 fmsl 20.90 fmsl 21.00 fmsl 20.00 fmsl 14.00 fmsl 13.00 fmsl 1.00 It N (Y or N) fmsl M FAPR 18 2018 by: _-- S •y :4 SEAL r' 031315 c �. INj.Ef;�' \ Ry SI ?1P. � bj� i Form SW401-Wet Detention Basin -Rev 9-411 B112 I Pads I. a H. Design summary, Page 1 of 2 Permit No, (to be provided by DWQ) temporary pool REQUIRED, permanent pool PROVIDED, permanent pool, Ap,e„_p,a bottom of 1 Oft vegetated shelf, AW a,ul sediment cleanout, top elevation (bottom of pond), A.., Volume, temporary pool Volume, permanent pool, Vp,,,, p„ I Volume, forebay (sum of forebays if more than one forebay) Forebay %of permanent pool volume SAIDA Table Data Design TSS removal Coastal SAIDA Table Used? MountainlPiedmonl SAIDA Table Used? SAIDA ratio Average depth (used in SAIDA table): Calculation option 1 used? (See Figure 10-21c) Volume, permanent pool, Vpe„ py Area provided, permanent pool, Ape„ p„I Average depth calculated Average depth used in SAIDA, it,,, (Round to nearest 0.5ft) Calculation option 2 used? (See Figure 10.2b) Area provided, permanent pool, Ape„ pea Area, bottom of 10h vegetated shed, Ap„ ,Heil I Area, sediment cleanoul, lap elevation (bottom of pond), A,_,, "Depth" (distance blw bottom of 1Oft shelf and top of sediment) Average depth calculated Average depth used in SAIDA, d.„ (Round to down to nearest 0.51t) Dlawdown Calculations Diawdown through orifice? Diameter of orifice (if circular) Area of orifice (if -men -circular) Coefficient of discharge (CD) Driving head (Hp) Drawdown through weir! Weir type Coefficient of discharge (C„) Length of weir (L) Driving head (H) Pre-developmenl 1-yr, 24-hr peak flow Post -development 1-yr, 24-hr peak flow &forage 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 flowpalh to width ratio Length to width ratio Trash rack for overflow 8 orifice? Freeboard provided Vegetated filter provided? Recorded drainage easement provided? Capuras all runoff at ultimate build -out? Drain mechanism for maintenance or emergencies is: I Form SW401-Wel Detenllon Basin-Rev.9.4I18I12 41,633 ft' 31,800 ft' 3.04 (unitless) 33,673 ft' OK 29,622 ft' 10,888 ft, 52,492 ft' OK 138,674 ft' 29,015 ft' 20.9% % OK 90 % Y (Y or N) (Y or N) 3.04 (unitless) N (Y or N) 138,674 ft' 33,673 ft` ft Need 3 It min. It Y (Y or N) 33,673 ft' 29,622 rye 10,888 ftz 6,00 ft 4.57 It 4.5 ft Y (Y or N) 4.00 in in' 0.60 (unitless 0.45 It (Y or N) (unitless) It If 24.01 ft'/sec 59.08 ft'Isec 0.28 ft/sec 2.16 days 3 :1 10 :1 OK OK OK, draws down in 2-5 days. OK OK rAPR 18 201a Y - �- 10.0 it OK 8 3:1 OK 1.6 :1 OK Y (Y or N) OK 2.0 It OK N (Y or N) OK Y (Y or N) OK Y (Y or N) OK Mechanical Pans I. 8 II. Design Summary, Page 2 of 2 High Density Residential Subdivisions Deed Restrictions & Protective Covenances I In accordance with Title 15 NCAC 2H.1000 and S.L. 2006-246, the Stormwater Management Regulations, deed restrictions and protective covenants are required for High Density Residential 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. I, Michael H. Pollak, acknowledge, affirm and agree by my signature below, that I will cause the following deed restrictions and covenants to be recorded for Wyndwater - Phase 9 prior to the sale of any lot: 1. I The following covenants are intended to ensure ongoing compliance with State Stormwater Management Permit Numbersi..t as issued by the Division of Water Quality under the I 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 j 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 allowable built -upon area per lot is 4,500 square feet. 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. I OR, if the proposed built -upon areas per lot will vary, please REPLACE #6 above with the following: 6. The maximum built -upon area per lot, in square feet, is as listed below: Lot # BUA Lot # BUA Lot # BUA Lot # BUA 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. 7. Each lot will maintain a 30** foot wide vegetated buffer between all impervious areas and surface waters. **50 i foot for projects located in the 20 coastal counties. 8. j 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. KAFIR i 8 2018 I Form DRPC-3 Rev.2 05Nov2009 Page 1 of 2 I High Density Residential Subdivisions 3 2 /8 I, Garry S. Pape , a Notary Public in the State of North Carolina , County of New Hanover , do hereby certify that Michael H. Pollak personally appeared i before me this the 20' day of /�. I Ma✓G^ , 20 , and acknowledge the due executi n of the foregoing instrument. Witness my hand and official seal, Sign t re My Commission expires April 13, 2020 .FySA. SEAL NOTA%, j IJBLIC E�c�0 APR 1 11111 BY. Form DR-PC-3 Rev.2 05Nov2009 Page 2 of 2 I Sw8 1 `(nq,C' WYNDWATER - PHASE 9 STORM WATER NARRATIVE & CALCULATIONS March 27, 2018 RO a SEA r' 031315 O'.`�GINE.�.' \\`� APR 1 8 2G18 GSP CONSULTING, PLLC. 6626 Gordon Road, Unit C Wilmington, North Carolina 28411 (910)442-7970 MOP STORMWATER NARRATIVE WYNDWATER- PHASE 9 PENDER COUNTY, NC SITE DESCRIPTION This project is a plan revision to the Wyndwater Phase 2 Stormwater Permit #SW8 140416 Mod, issued July 15, 2016. This phase of the development accounts for the previously permitted future BUA of 60,300 sf as shown with the attached plans and calculations. '['here are no wetlands located within the limits of this phase of the project which have been field verified by the USACOE. The site will be developed by Signature Top Sail NC, LP c/o Michael H. Pollak — Manager. Water is available to the site via a main owned by Pender County Utilities that was constructed with Phase 2 of this development and sewer will be by gravity sewer that will connect to a lift station that will be owned and operated by Pluris, Inc. SOILS The soils for this project consist of Autryville series soils (Hydrologic Soil Group A), Baymeade Series Soils (Hydrologic Soil Group A) and Poreston Series Soils (Hydrologic Soil Group C). The Autryville series are well drained soils near drainageways on convex divides on uplands. The Baymeade series consist of well drained soils on low ridges and convex divides on the uplands near the major drainageways. The Poreston series consists of moderately well drained soils on slightly convex interstream divides near shallow drainageways.. STORM DRAINAGE DESIGN The primary Stormwater measures for this phase of the project will be a wet detention basin. The stormwater will be conveyed via overland sheet flow and a closed conduit system to the proposed wet detention basin that will be designed to treat the first 1.5" of rainfall and to control the peak runoll' from the 10-year storm event. The site drains to an unnamed tributary of Mullet Run (classification SA, HQW) but is greater than %z mile as verified by a Water Classification Request EROSION CONTROL PLAN FOR WYNDWATER — PHASE 9 Area to be disturbed: +/- 2.96 acres This project is a revision to the previously approved Wyndwater Phase 2 project Permit 4PENDE-2014-023 and will increase the permitted acreage by 2.96 Ac. There are no wetlands located within the limits of this phase of the project which have been field verified by the USACOE. The site will be developed by Signature Top Sail NC, LP c/o Michael H. Pollak — Manager. Water is available to the site via a main owned by Pender County Utilities that was constructed with Phase 2 of this development and sewer will be by gravity sewer that will connect to a lift station that will be owned and operated by Pluris, hic.. EROSION CONTROL MEASURES: '['his project will primarily control erosion with the use of a temporary construction entrance, outlet protection at the ends of culverts, temporary silt fence surrounding the site and a sediment basin. The contractor shall install, maintain and remove upon completion the silt fence as necessary to prevent any sediment from leaving the project limits. This will include any temporary stockpile areas if necessary. Contractor shall clean and restore to pre - construction conditions any areas that may inadvertently be damaged due to the failure of the erosion control measures. SCHEDULING OI' WORK: Clearing and grubbing shall be scheduled and performed in such a manner that fine grading operations and erosion control practices can follow immediately thereafter. Excavation and embankment operations will be conducted such that cuts and fills will be completed to final grades in a continuous operation. All construction areas not otherwise protected shall be planted with permanent vegetative cover in accordance with the specifications within 15 working days after completion of active construction. MINIMUM AREAS TO BE DISTURBED: Only those areas necessary for timely and proper completion of the project shall be stripped of native vegetation. 'rile angle for graded sloped and tills shall be no greater than the angle which can be retained by vegetative cover or other adequate erosion control devices or structures. Slopes left exposed will, within 21 calendar days of completion of any phase of grading, be planted or otherwise provided with ground cover, devices, or structures sufficient to restrain erosion. All other areas to be stabilized within 15 working days of cease of any phase of activity. PLACEMENTOF SEDIMENT CONTROL DEVICES: All devices (sediment fences, construction entrances, etc.) for sediment control shall be constructed prior to beginning clearing and grubbing on the site. FINAL COVER: As soon as practicable after finished grades have been established, all operations in connection with establishing final ground cover shall be performed. Any inactive disturbed ground area to remain denuded more than 15 working days shall be temporarily seeded in accordance with the temporary seeding schedule as noted on the plans. All slopes to be stabilized within 21 calendar days. SEQUENCE OF CONSTRUCTION 1. Install temporary construction entrance as shown on erosion & sediment control plan. 2. Install perimeter controls (silt fence, tree protection fencing, etc.) as shown on the erosion & sediment control plan. This step needs to be completed prior to upslope land disturbing activities. 3. Once perimeter controls and sediment trapping measures are installed clear and grub site within limits of disturbance. 4. Upon bringing the site to rough grade, stabilize all areas with temporary vegetation if left undisturbed for 15 working days and all slopes within 21 calendar days. 5. Once the storm culverts and waterlines are in place, install inlet protection and outlet protection as shown on the erosion & sediment control plans. 6. Upon bringing the roads to subgrade elevations, stabilize the areas by placing stone base as early as possible. 7. For temporary vegetative stabilization of all denuded areas see note referencing the erosion control program and specifications. 8. After construction operations have ended and all disturbed areas have stabilized, mechanical sediment controls shall be removed. Sediment from temporary sediment trapping devices shall be disposed of by spreading on the site or hauling away if not suitable for fill. All denuded areas are to be permanently stabilized with permanent vegetation. POND RELEASE TIME FOR CONTROL PIPE: POND 2 POND RELEASE TIME FOR CONTROL PIPE: STORAGE ORIFICE STORAGE OUTFLOW RELEASE ELEVATION ELEVATION VOLUME RATE TIME (FT) (FT) (CF) (CFS) (HOURS) 21.84 20.50 52,492 0.281 51.9 TOTAL HOURS 51.9 DAYS 2.16 CONTROL PIPE: 4 INCH ORIFICE HOLE USED ORIFICE EQUATION -1.0 DE-1-ERMINE OU"Il'LOW RATE Q = Cd*A*(2gh)^ I /2 t SEDIMENT BASIN #1 CALCULATIONS Drainage Area = 24.01 Required Storage = 43,225 Provided Storage = 52,492 10-Year Peak Flow = 45.39 Required Area = 14,751 Provided Area = 41,633 Skimmer Size = 3.00 SKIMMER DEWATERING DISCHARGE CALCULATIONS SEDIMENT TRAP #1 STORAGE ORIFICE ELEVATION ELEVATION (FT) (FT) 21.84 20.50 CONTROL PIPE : 3 STORAGE OUTFLOW VOLUME RATE (CF) (CFS) 52,492 0.158 TOTAL HOURS DAYS INCH ORIFICE HOLE USED ORIFICE EQUATION TO DETERMINE OUTFLOW RATE Q = Cd*A*(2gh)^1/2 i RELEASE TIME (HOURS) 92.3 92.3 3.8 Pre -Developed Flows 10-Year Pre Dev. Peak Flow Intensity 9.43 in/hr C-Factor 0.25 Q=C`I'A 53.41 cfs Drainage Area PHASE 9 SUA CALCS Drainage Area 1,046,055 sf Drainage Area 24.01 ac Impervious Area Calculation Lots 40,500 sf Pavement 19,800 sf Existing 347,035 sf Total 407,335 sf Total 9.35 ac % Impervious 38.9% Volume/Storage Calculation Design Storm (P) Schueler Method Runoff Coeff (RV) Required Volume (Vreq) 1.5 in 0.40 RV = %IMP'0.009+0.05 52,363 cf Vreq = (P/12)`RV'DA u CONTOUR INCR ACCUM CONTOUR AREA VOL VOL [sq ft] [cu ft] [cu ft] 14.0 10888 0 0 15.0 12593 11,741 11,741 16.0 14363 13,478 25,219 17.0 16196 15,280 40,498 18.0 18090 17,143 57,641 19.0 20044 19,067 76,708 20.0 22058 21,051 97,759 20.5 25543 11,900 109,659 FOREBAY CONTOUR INCR ACCUM CONTOUR AREA VOL VOL [sq ft] [cu ft] [cu ft] 15.0 2711 0 0 16.0 3561 3,136 3,136 17.0 4473 4,017 7,153 18.0 5444 4,959 12,112 19.0 6476 5,960 18,072 20.0 7564 7,020 25,092 20.5 8130 3,924 29,015 Aperm pool Ashelt bottom VOLUME Aperm pool Ashen bottom Apand bottom Apond bottom Total 138,674 33,673 29,622 10,888 Depth PROVIDED FOR FOREBAY 20.9% 1.5" STORAGE CONTOUR INCR ACCUM CONTOUR AREA VOL VOL [sq ft] [cu ft] [cu ft] 20.5 33673 0 0 21.0 39683 18,339 18,339 21.84 41633 34,153 52,492 33,673 29,622 10,888 6.0 daverage 4.5726 Hydrograph Summary Report HydraBow Hydrographs by Intelisolve v9.1 Hyd. No. Hydrograph type (origin) Peak flow (cfs) Time Interval (min) Time to peak (min) Hyd. volume (tuft) Inflow hyd(s) Maximum elevation IN Total strge used (tuft) Hydrograph description 1 SCS Runoff 65.14 1 725 206,564 — -- - — - WET DETENTION BASIN 2 Reservoir 11.91 1 754 184,368 1 22.62 84,660 WET DETENTION BASIN 2015-04-20 PHASE 2 WET POND.gpw Return Period: 10 Year Wednesday, May 4, 2016 Pond Report a Hydranow Hydrographs by Intelisolve v9.1 Pond No. 1 - WET DETENTION BASIN Pond Data Contours - User -defined contour areas. Conic method used for volume calculation. Begining Elevation = 20.50 n Stage / Storage Table Stage (fit) Elevation (ft) Contour area (sgft) nor. Storage (tuft) Total storage (tuft) 0.00 20.50 33,673 0 0 0.50 21.00 37,894 17,880 17,880 1.50 22.00 42,009 39,930 57,809 2.50 23.00 44,393 43,191 101,001 3.50 24.00 46,832 45,602 146,603 4.50 25.00 49,329 48,070 194,673 5.50 26.00 51,882 50,595 245,269 Wednesday, May 4, 2016 Culvert I Orifice Structures Weir Structures [A] [B] [C] [PrfRsr] [A] [B] [C] [D] Rise (in) = 24.00 4.00 0.00 0.00 Crest Len (ft) = 16.00 6.00 0.00 0.00 Span (in) = 24.00 4.00 0.00 0.00 Crest El. (ft) = 22.69 21.84 0.00 0.00 No. Barrels = 1 1 0 0 Weir Coeft. = 3.00 3.00 3.33 3.33 Invert El. (ft) = 20.45 20.50 0.00 0.00 Weir Type = Riser Broad -- -- Length (ft) = 104.00 0.00 0.00 0.00 Multi -Stage = Yes Yes No No Slope(%) = 1.00 0.00 0.00 n/a N-Value = .010 .013 .013 n/a Orifice coeff. = 0.60 0.60 0.60 0.60 Exfii.(Inihr) = 0.000 (by Contour) Multistage = n/a Yes No No TIN Elev. (ft) = 0.00 Note'. CuIvery ifice outflows are analysed under inlet (ic) and oWet (oc) wridol. Weir nsers checked for orifice conditions (Ic) and submergence (a). Stage I Storage / Discharge Table Stage Storage Elevation CIvA Clv B Clv C PrfRsr WrA Wr B Wr C WrID Exfil User Total it tuft It cfe cfs cfe cfs cfs cis cis cfs cfs cfs cfs 0.00 0 20.50 0.00 0.00 -- - 0.00 0.00 - - -- 0.00 0.05 1,788 20.55 0.02 is 0.01 is -- --- 0.00 0.00 -- --- ----- 0.01 0.10 3,576 20.60 0.03 is 0.02 is - - 0.00 0.00 - - -- -- 0.02 0.15 5,364 20.65 0.06 is 0.05 is --- --- 0.00 0.00 - - -• -- 0.05 0.20 7,152 20.70 0.08 is 0.08 is - -- 0.00 0.00 - - --- --- 0.08 0.25 8,940 20.75 0.12 is 0.12 is - - 0.00 0.00 - - -- -- 0.12 0.30 10,72B 20.80 0.16 is 0.15 is --- --- 0.00 0.00 - - -- -- 0.15 0.35 12,516 20.85 0.18 is 0.18 is - •- 0.00 0.00 - - -- -- 0.18 0.40 14,304 20.90 0.20 is 0.20 is - -- 0.00 0.00 - - -- -- 0.20 0.45 16,092 20.95 0.22 is 0.22 is - -- 0.00 0.00 -- --- -- -- 0.22 0.50 17,880 21.00 0.24 is 0.24 is - -- 0.00 0.00 - - -- -- 0.24 0.60 21,873 21.10 0.29 is 0.28 is - --- 0.00 0.00 - - -- - 0.28 0.70 25,866 21.20 0.32 is 0.31 is - -- 0.00 0.00 - --- -- -- 0.31 0.80 29,859 21.30 0.35 is 0.33 is - -- 0.00 0.00 - - -- -- 0.33 0.90 33,852 21.40 0.35 is 0.35 is -- -- 0.00 0.00 - - -- - 0.35 1.00 37,845 21.50 0.38 is 0.38 is - -- 0.00 0.00 - - -- --- 0.38 1.10 41,837 21.60 0.41 is 0.40 is - -- 0.00 0.00 - - -- -- 0.40 1.20 45,830 21.70 0.44 is 0.42 is - --- 0.00 0.00 - -- --- --- 0.42 1.30 49,823 21.80 0.44 is 0.44 is - -- 0.00 0.00 - - - -- 0.44 1.40 53,816 21.90 0.73 is 0.44 is -- -- 0.00 0.26 - - -- -- 0.71 1.50 57,809 22.00 1.58 is 0.43 is - -- 0.00 1.15 -- - -- -- 1.58 1.60 62,129 22.10 2.61 is 0.41 is - -- 0.00 2.39 - - -- -- 2.80 1.70 66,448 22.20 4.30 is 0.39 is --- --- 0.00 3.89 -- - -- - 4.28 1.80 70,767 22.30 6.06 is 0.37 is - -- 0.00 5.62 - - --- --- 5.99 1.90 75,086 22A0 7.96 is 0.35 is - -- 0.00 7.54 - - -- - 7.90 2.00 79,405 22.50 10.00 is 0.33 is - •- 0.00 9.57 s -- -- -- -- 9.90 2.10 83,724 22.60 11.58 is 0.31 is - •- 0.00 11.27 s - - -- - 11.58 2.20 88,043 22.70 13.11 is 0.30 is - -- 0.05 12.76 s - - -- - 13.11 2.30 92,362 22.80 15.07 is 0.25 is - -- 1.75 13.06 s - -- --- --- 15.06 2.40 96,681 22.90 16.85 is 0.19 is - -- 4.62 s 12.04 s - - - -- 16.85 2.50 101,001 23.00 18.02 is 0.15 is -- -- 6.63 s 11.23 s - - -- -- 18.02 2.60 105,561 23.10 18.89 is 0.13 is -- -- 8.05 s 10.72 s - - - - 18.89 2.70 110,121 23.20 19.63 is 0.11 is -- -- 9.17 s 10.35 s -- -- - -- 19.63 2.80 114,681 23.30 20.29 is 0.09 is - --- 10.11 a 10.08 s - - -- - 20.29 2.90 119,242 23.40 20.91 is 0.08 is - -- 10.92 s 9.88 s - - -- - 20.89 3.00 123,802 23.50 21.49 is 0.07 is -•- -- 11.669 9.75 s - - - - 21.48 3.10 128,362 23.60 22.04 is 0.07 is -- -- 12.32 s 9.65 s - - -- - 22.04 3.20 132,922 23.70 22.58 is 0.06 is - -- 12.91 s 9.57 s - - -- - 22.54 Continues on next page... 5 WET DETENTION BASIN Stage I Storage I Discharge Table Stage Storage Elevation Clv A Ctv B Clv C PrfRsr WrA Wr B Wr C Wr D EzTil User Total It Curt It efs cfs efs efs Cfs efs efs cfs efs cfs cfs 3.30 137,483 23.80 23.10 Ic 0.06 is -- •- 13.48 s 9.54 s - - -- - 23.08 3.40 142,043 23.90 23.60 is 0.05 is -- -- 14.00 s 9.51 s - - -- -- 23.56 3.50 146,603 24.00 24.09 Ic 0.05 is -- -- 14.52 s 9.51 s - - -- - 24.08 3.60 151,410 24.10 24.57 Ic 0.05 is -- -- 14.98 s 9.51 s - - -- - 24.53 3.70 156,217 24.20 25.03 is 0.04 is -- -- 15.41 s 9.51 s - - -- - 24.97 3.80 161,024 24.30 25.49 Ic 0.04 is --- -- 15.87 s 9.55 s - -- -- - 25.46 3.90 165,831 24.40 25.94 Ic 0.04 is -- - 16.26 s 9.57 s - - -- - 25.87 4.00 170,638 24.50 26.38 Ic 0.04 is --- --- 16.68 s 9.61 s - --- --- - 26.33 4.10 176,445 24.60 26.81 Ic 0.04 Ic -- -- 17.07 s 9.65 s - - -- - 26.76 4.20 180,252 24.70 27.24 is 0.03 is -- •- 17.46 s 9.70 s -- - •-- -- 27.20 4.30 185,059 24.80 27.66 Ic 0.03 is -- --- 17.75 s 9.71 s - - -- - 27.48 4.40 189,866 24.90 28.07 is 0.03 is -- -- 18.18 s 9.80 s - - --- - 28.01 4.50 194,673 25.00 28.48 Ic 0.03 is -- --- 18.54 s 9.86 s - - --- -- 28.43 4.60 199,733 25.10 28.88 Ic 0.03 is -- -- 18.82 s 9.89 s - - -- - 28.74 4.70 204,792 25.20 29.27 is 0.03 is -- --- 19.19 s 9.96 s -- - -- -- 29.18 4.80 209,852 25.30 29.66 is 0.03 is -- -- 19.49 s 10.01 s -- - - -- 29.52 4.90 214,911 25.40 30.05 is 0.03 is -- •- 19.72 s 10.03 s -- --- - - 29.77 5.00 219,971 25.50 30.42 Ic 0.02 is -- -- 20.10 s 10.12 s -- - - -- 30.25 5.10 225,030 25.60 30.80 is 0.02 is -- -- 20.43 s 10.209 -- - - -- 30.65 5.20 230,090 25.70 31.17 Ic 0.02 is •- •- 20.71 a 10.25 s -- - - -- 30.98 5.30 235,149 25.80 31.53 is 0.02 is -- -- 20,93 s 10.27 s - - - - 31.22 5.40 240,209 25.90 31.90 is 0.02 is --- -- 21.39 s 10.42 s -- --- - - 31.83 5.50 245,269 26.00 32.25 Ic 0.02 is -- -- 21.50 s 10.41 a - - - -- 31.93 ...End Storm Sewer Tabulation Page 1 Station on Dmg Area Rnoff Area x C Tc Rain Total Cap Vol Pipe Invert Elev HGL Elev Gmd / Rim Elev Line ID coeff (1) Flow full Line To Incr Total Incr Total Inlet Syst Size Slope Dn Up Dn Up Dn Up Line (ft) (ac) (ac) (C) (min) (min) (inlhr) (cfs) (cfs) (ft/5) (in) (%) (ft) (ft) (ft) (ft) (ft) (ft) 1 End 35.544 0.00 2.71 0.00 0.00 1.52 0.0 7.8 6.3 9.57 12.58 3.57 24 0.31 21.00 21.11 22.62 22.67 0.00 26.00 2-1 2 1 279.467 1.30 2.71 0.56 0.73 1.52 5.0 6.3 6.3 9.57 12.40 3.64 24 0.30 21.11 21.95 22.88 23.36 26.00 25.04 3-2 3 2 71.586 0.24 1.41 0.56 0.13 0.79 5.0 5.8 6.3 4.98 5.69 2.82 18 0.29 21.95 22.16 23.84 24.01 25.04 25.82 4-3 4 3 112.972 0.66 1.17 0.56 0.37 0.66 5.0 5.3 6.3 4.13 3.54 3.37 15 0.30 22.16 22.50 24.09 24.55 25.82 25.82 5-4 5 4 24.664 0.51 0.51 0.56 0.29 0.29 5.0 5.0 6.3 1.80 3.44 1.47 15 0.28 22.50 22.57 24.96 24.98 25.82 25.82 6-5 Project File: 6-1.stm Number of lines: 5 Run Date: 4/4/2018 NOTES:Intensity = 121.80 1 (Inlet time + 23.50) ^ 0.84; Return period =Yrs. 10 ; c = cir e = ellip b = box simm sews. v11.00 ECS CAROLINAS, LLP ;Fui :ta,r sr, .trr,�f,"ts,: ic• lit'f tNit ,lI " ,,ItJt:I I( II trIi11�-rI'll I"" 'I •;I"' i:a . F,!' Illttt?•: February 10, 2014 Mr. Gary Pape, P.E. GSP Consulting, PLLC 6626 Gordon Road Wilmington, North Carolina 28411 Reference: Report of Seasonal High Water Table Estimation The Oaks at Sloop Point PH 2 Sloop Point, Pander County, North Carolina ECS Project No. 22.20203 Dear Mr. Pape: ECS Carolinas, LLP (ECS) recently conducted an estimation of the Seasonal High Water Table (SHWT) for the proposed stormwater best management practice (BMP) areas at the Oaks at Sloop Point PH 2 in Sloop Point, Pander County, North Carolina. This letter, with attachments, is the report of our estimation. Field Testing On February 5, 2014, ECS conducted an exploration of the subsurface soil and SHWT conditions at one requested location shown on the attached Boring Location Plan (Figure 1). The purpose of this exploration was to estimate the SHWT of the in place soils for the design of for the proposed stormwater BMP area. ECS met with Mr. Garry Pape on site in order to locate the boring. ECS explored the subsurface soil and groundwater conditions by advancing one hand auger boring into the existing ground surface at the requested boring location. ECS visually classified the subsurface soils and obtained representative samples of each soil type encountered. ECS recorded the SHWT and groundwater level observed at the time of the hand auger boring. The attached SHWT sheet provides a summary of the subsurface conditions encountered at the hand auger boring location. The groundwater level and the SHWT were estimated at the boring location below the existing grade elevation. Below is a summary of each boring location. The SHWT may vary within the proposed site due to changes in subsurface conditions and elevation. i , � I it;:l f•': ils ;.. 1'.II.. �4Q1' �'4) i VS .iI I`d V;l�i71 '�C %+A1 I �: i' I _ i' , •�"�.1 �-: US.. t+':r1-,IAab N,'.V'!: y'7. Lr•1d.i^.i.' qT. •rV�+ .l. t' .. i. .:� , �1• Report of SHWT Estimation The Oaks at Sloop Point Ph 2 Sloop Point Ponder County, North Carolina ECS Project No. 22.20203 February 10, 2014 Closure The activities and evaluative approaches used In this assessment are consistent with those normally employed in assessments of this type. Our testing of site conditions has been based on our understanding of the project information and the data obtained during our field activities. ECS appreciates the opportunity to provide our services to you on this project. If you have any questions concerning this report or this project, please contact us at (910) 686-9114. Respectfully, ECS CAROLINAS, LLP r, K. Brooks Wall Project Geologist Attachments: Boring Location Plan SHWT sheet 2 Kris J. Stamm Principal APPROXIMATE BORING LOCATION NOT TO SCALE The Oaks at Sloop Point PH2 Sloop Point, Ponder County, North Carolina ECS Project # 20203 February 5, 2014 KBW Figure 1— Boring Location Plan Provided by: GSP Consulting I e Seasonal High Water Table Estimation The Oaks at Sloop Point Ph 2 Sloop Point, Pender Co., North Carolina ECS Project No. 22.20203 February 10, 2014 Location Death Soil Description B-1 0-20" Brown silty SAND 20"-32" Gray fine SAND w silt 32"-48" Gray/orange clayey SAND 48"-70" Gray/orange fine SAND w silt Seasonal High Water Table was estimated to be at 40 inches below the existing grade elevation. Groundwater was encountered at 65 inches below the existing grade elevation. Wyndwater Phase 2 Built Upon Area (BUA) Allocation Summary SW8 140416 Lot # Owner Lot Size Actual BUA Permitted Deed Restrictions BUA Book/ Page # Lots: 69 # Owned by Permittee/Home Builder: # Sold: 18 51 % Sold: 74% 44 COATES, ANDREW T 18,154 4,316 4,500 DB 4615, PG 298 45 VOGLER, KURT 15,444 4,175 4,500 DB 4615, PG 298 46 GREfCHKO, DARREN THOMAS 13,338 3,124 4,500 DB 4615, PG 298 47 BORGEN, JAMES ARTHUR 12,287 3,237 4,500 DB 4615, PG 298 48 THOMAS, THOMAS A JR 12,006 3,566 4,500 DB 4615, PG 298 49 THOMAS, ROBERT WALTER III 12,005 2,823 4,500 DB 4615, PG 298 50 MOORLAG, MATTHEW JAMES 12,005 3,273 4,500 DB 4615, PG 298 51 FARBER, BRANDON L 12,005 3,342 4,500 DB 4615, PG 298 52 DENNIS, BRIAN M 12,005 3,325 4,500 DB 4615, PG 298 53 SEIDNER, ANTHONY LOUIS 12,005 3,869 4,500 DB 4615, PG 298 54 SILVA, OMAR F 12,005 3,309 4,500 DB 4615, PG 298 55 ZIMMER, JESSE J 12,005 3,634 4,500 DB 4615, PG 298 56 DOWNIE, DEAN A 12,005 3,825 4,500 DB 4615, PG 298 57 BRADSHAW, JEFFERY 12,005 2,923 4,500 DB 4615, PG 298 58 MOSHER, MICHAEL II 12,005 3,236 4,500 DB 4615, PG 298 59 DICK, SEAN R 12,005 3,029 4,500 DB 4615, PG 298 60 ROMERO, HENRY RENE 12,005 4,083 4,500 DB 4615, PG 298 61 BANOS, CLAUDIO A GUTIERREZ 12,086 3,306 4,500 DB 4615, PG 298 62 NEFF, JESSE STEPHEN 12,905 3,619 4,500 DB 4615, PG 298 63 SISCO, JESSE A 14,897 4,133 4,500 DB 4615, PG 298 64 PHILLIPS, DAVID CASEY 18,485 4,429 4,500 DB 4615, PG 298 65 HOAG, DAVID F II 16,666 3,238 4,500 DB 4615, FIG 298 66 KELSAW, STEVEN 17,185 3,244 4,500 DB 4615, FIG 298 67 ROSS, DAVID RUSSELL 16,294 3,840 4,500 DB 4615, PG 298 68 BROWN, ERIC CHRISTOPHER 19,643 4,002 4,500 DB 4615, PG 298 69 GILLUM, CHARLES R II 12,095 4,025 4,500 DB 4615, PG 298 70 WHITE, JASON M 12,005 3,749 4,500 DB 4615, PG 298 71 LEE, ROBERT C II 12,005 3,575 4,500 DB 4615, PG 298 72 MULLEN, KAREL L 12,005 3,459 4,500 DB 4615, PG 298 73 DA SILVA, JASON MICHAEL 12,005 3,370 4,500 DB 4615, PG 298 74 FETTY, NICHOLAS L 12,005 3,710 4,500 DB 4615, PG 298 75 COY, JEREMY RYAN 14,5781 3,969 4,500 DB 4615, PG 298 76 PLACKE, DUSTIN 12,845 3,905 4,500 DB 4615, PG 298 77 BECKNER, AARON T 12,005 2,595 4,500 DB 4615, PG 298 78 RADDIGAN, MARTY L 12,005 3,897 4,500 DB 4615, PG 298 79 NANCE, ALLISON NICOLE 12,005 3,286 4,500 DB 4615, PG 298 80 TELFER, LIAM 12,005 2,809 4,500 DB 4615, PG 298 81 JONES, BRANDON H 12,005 3,669 4,500 DB 4615, PG 298 82 WILLIAMS, JENNIFER M 12,240 2,833 4,500 DB 4615, PG 298 83 GREEN, JUSTIN T 12,012 3,863 4,500 DB 4615, PG 298 84 GILILLAND, MATTHEW 16,442 2,897 4,500 DB 4615, PG 298 85 AMERICAN HOMESMITH LLC 7,159 0 3,738 DB 4615, PG 298 86 LENNON, DANIEL E TRUSTEES 7,253 3,201 3,628 DB 4615, PG 298 87 AMERICAN HOMESMITH LLC 7,230 0 3,628 DB 4615, PG 298 88 YATES, BRENDA W TRUSTEE 7,208 3,219 3,628 DB 4615, PG 298 89 AMERICAN HOMESMITH LLC 7,186 0 3,628 DB 4615, PG 298 90 HEBRON, TIFANNI MICHELLE 7,164 3,201 3,628 DB 4615, PG 298 91 AMERICAN HOMESMITH LLC 7,142 0 3,628 DB 4615, PG 298 92 AMERICAN HOMESMITH LLC 6,589 0 4,043 DB 4615, PG 298 93 KARSEVAR, LINDA JOY 8,892 2,769 3,665 DB 4615, PG 298 94 AMERICAN HOMESMITH LLC 13,182 3,365 3,987 DB 4615, PG 298 95 LANE, ROGER W 14,974 3,318 3,688 DB 4615, PG 298 96 CARDEA, LAURIE-JO 15,470 3,320 3,688 DB 4615, PG 298 97 CHUNG, ERIC J 8,467 3,435 3,911 DB 4615, PG 298 98 AMERICAN HOMESMITH LLC 8,571 3,353 3,625 DB 4615, PG 298 99 DEBENPORT, BOB 8,571 3,448 3,625 DB 4615, PG 298 100 AMERICAN HOMESMITH LLC 8,571 0 3,625 DB 4615, PG 298 101 COUNCILMAN, JESSE H III 8,571 3,425 3,625 DB 4615, PG 298 102 AMERICAN HOMESMITH LLC 8,571 0 3,625 DB 4615, PG 298 103 PENN, MICAH JONATHAN 8,571 3,219 3,625 DB 4615, PG 298 104 AMERICAN HOMESMITH LLC 8,589 0 3,698 DB 4615, PG 298 344 Signature Top Sail NC, LTD 11,232 0 4,500 DB 4615, PG 298 345 Signature Top Sail NC, LTD 10,400 0 4,500 DB 4615, PG 298 346 Signature Top Sail NC, LTD 9,286 0 4,500 DB 4615, PG 298 347 Signature Top Sail NC, LTD 9,504 0 4,500 DB 4615, PG 298 348 Signature Top Sail NC, LTD 10,278 0 4,500 DB 4615, PG 298 349 Signature Top Sail NC, LTD 11,719 0 4,500 DB 4615, PG 298 350 Signature Top Sail NC, LTD 12,000 0 4,500 DB 4615, FIG 298 351 Signature Top Sail NC, LTD 12,162 0 4,500 DB 4615, FIG 298 PFN 1. 2. 3. 4. Option #1 Permit Transfer Checklist Both the Current and Proposed Permittees Signed the Application gnature Top Sail NC Ltd. LP — Reviewed on Oct. 4, 2019 Permit No. SW8140416 Expiration Date: July 3, 2022 Session Law Extension Previously Issued (Y/N): NA Proposed Permittee: a. Secretary of State (SoS) is Active (Y/N): Y b. SoS Current Person: Michael Pollak c. Original Signature w/Signature Authority (Y/N): Y d. Deed Submitted Showing Owner (Y/N): Y e. Permittee is Developer or Purchaser? (which one?): N I. Deed showing Property Owner (Y/N): Y ii. If Developer, Development Agreement (Y/N):NA iii. If Purchaser, Purchase Agreement (Y/N): NA Property Owner (Only if Proposed Permittee is the Developer or Purch esa �): a. SoS is Active (Y/N): b. SoS Current Person: c. Original Signature w/Signature Authority (Y/N): Current Permittee: a. SoS is Active (YIN): Y b. SoS Current Person: Michael Pollak, Jennifer Pollak Evans c. Original Signature with Signature Authority (Y/N): Y 6. Transfer to HOA: Session Law 2011-256 a. Correct type of project (Y/N): Y b. Three criteria for transferring to HOAs: i. 50% lots are sold to individuals (YIN): Y ii. Common area transferred to HOA (see compliance): Y iii. Permit is in compliance (see compliance): c. HOAs, Transfer Documents Needed: I. HOA is Viable (Y/N): Y ii. Election Meeting Minutes (Y/N): N iii. Contact Information for HOA (Y/N): Y 1. Property Manager: CAMS 2. President or VP: Michael Pollak 7. Compliance: a. File Review Inspection Documents: i. Deed for Common Areas (Y/N): Y ii. Recorded Deed Restrictions (Y/N): Needs amendment vx� • Some lots are not 4,500 sf each ace to permit / iii. 0&M (Y/N): Needs new 0&M signed by Mike Pollak ✓ iv. PE Certification: Y v. BUA/Lot Summary: N b. Letter: If there are items to fix in the field, ask them to send pictures of the finished product with their resubmittal. c. Field Inspection: i. Inspector: Steve Pusey ii. Date: iii. Issues/Actions Needed: G:\WQ\Shared\StormW ater\Permits & I'rojects\2014\140416 I ID\2019 10 xfer checklist 140416.docx Permit Transfer Checklist Option Ni: Both the Current and Proposed Permittees Signed the Application Signature Top Sail NC Ltd. LP - Reviewed on Oct. 4, 2019 1. Permit No. SW8140416 Expiration Dal _ _ _ _ _ _ _ _ _ JUIy 3, 2022 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ - - Commented pK1]: If it is expired, it needs a rrnewal prior 2. Session Law Extension Previously Issued (YIN): NA to transfer. 3. (Proposed Permittleq_ _ _ _ _ _ _ _ _ _ _ _ _ _ — — — — — — — — _ , Commented IJK2]: If the p;ojcct has not been constructed, a. Secretary of State (SoS) is Active (YIN): Y it can get a new permit ifthe currcm permiaee requests a h. SoS Current Person: Michael Pollak rescission, Ifn is constructed, then the pcnnit must be transferred. A new permit is not an option. c. Original Signature wlSignature Authority (YIN): Y d. Deed Submitted Showing Owner (YIN)J. _ _ _ _ _ — Y_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Commented I1K31: Request map booWpagc refeenced in e.Pennittee 15 Developer Or PUrohasellNW71Ch one?): N ------------------------------ the deed so we can easily sec what land the deed covers. i. Deed showing Property Owner (YIN): Y Commented [JN4]: Owner must sign the application, too. ii. If Developer, Development Agreement (YIN):NA iii. If Purchaser, Purchase Agreement (YIN): NA 4. Property Omer (Only it Proposed Perrnittee_is_ih_e_f)eyel_oper or,Pprohaser): a. BOB is Active (YIN): b. SoS Current Person: It. Original Signature wlSignature Authority (YIN): 5. Current Permiflee: a. SoS is Active (YIN): b, SoS Current Person: Michael Pollak, Jennifer Pollak Evans c. Original Signature with Signature Authority(YIN): Y Transfer to HOA: Session Law 2011-256 a. Correct type of project (YIN):[__--------Y----------------______ b. Three criteria for transferring to HOAs: 1. 50%lots are sold to individuals (YIN): Y ii. Common area transferred to HOA (see compliance): Y iii. Permit is in compliance (see compliance): c. HOAs, Transfer Documents Needed: I. 'HOA is Viable (YIN):� Y______________--. ii. Election Meeting Minutes, (YIN); _ N iii. Contact Information for HOA (YIN): Y 1. property Managerf________ CAMS ______-_____ _ - -. 2. President or VP: Michael Pollak Compliance: a. File Review Inspection Documents: i. (Deed for Common Areas ,(YIN);______ Y______________ ii. ,Recorded Deed Restrictions YIN : Needs amendment - a Some lots ore not 4,500 sf each acc to permit iii. 0&M'(YIN): _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Needs new 0&M signed by Mike Pollak _ _ _ _ _ iv. :PE Certification Y v. !BUA/Lot Summary-L_____________N_________---__ Commented IJK5]: Check dead restrictions to see if it is designed par the rule cited in SL2011 256 ('Declarant of Condominium' par Chapter 47C or 'Declarant of a Planned Community' per 47F). If the subdivision was built prior to 1999, the Decfarama Attorney can make a itB emtinanon that the elements of the Planned Community Act (see g47F) have been met by the Dedaranl fix the subdmision. If the Declarant chooses to use this type of transfer, the determination trust be in venting, signed by the attempt, and submitted to DEMLR with this form. Commented [JK6]: Articles of Incamoration for the HOA Commented [JK7]: Show the names of the Presiders WP and have one of those people sign the harsher form. Commented lJK8]: A property manager cannot sign for an HOA unless the President m VP has transferred signature authority to them in writing. Commented IJK91:'Legal docimentatern of land transfer.' Resources: 1.Check county GIs site to vent' owner if deed is hard ad figure out (e if the referenced map is not included). 2.Cheok aoriats or county W websits to spot check BUA Commented [1K 10]: Must match the permit text. Commented IJK111: Signed by proposed permitted Commented [JK12]: Check the date to ensure that the project wasn't modified after it was eenined. Commented [JK131: See Example GAWQ\Shared\StormWater\I'ermits & Projects\2014\140416 HD\2019 10 xfer checklist 140416.docx b. Letter. If there are items to fix in the field, ask them to send pictures of the finished product with their resubmittal. c. Field Inspection ____________________________ i. Inspector: Brian Lambe ii. Date: iii. Issues/Actions Needed: Commented [1K141: The intoning pcnnince can choose to accept the project with compliance issues ifthey submit a letter in writing stating that they understand that they will have to bring the project into compliance once they become the pemtittee. (DEMI.K generally first inspects the site to identify the compliance items and notifies them ofthe items needed. But, it is not required ifthey want the permit without an inspection.) WIT DCTFNLION POND AINAl FILE "Fee r:\Wll\1narM\Siormxaler\vermnsBvgk[Is\J01!\MOl16MOE IraV016W1![eI WP1a.16Mo0 PROJECT#SWB 14DI16 Mod REVIEWER: Pussy PROTECT NAME WVnd%oter Phase 2(PH 9 bend OtlylnN Run Date 6121/16 Note- Urrinpa lNen.m.hadad In blue Last Modelled 23 A.,16 Food Pmd2 Pad3 Fbnda Plead Nnd6 M,1/and Run Clilra .,Slrlem wit S198, dies Ind.. Mumper 1 Onene DA 4 055. 1046053.00 Ef DI%A, DA, st= 0,00 Total Dnr,np Ar.&,O E... an. 000 000 0,00 000 UDa Total grain., Area.., 2401 00o a.Do 0.00 OW 000 Wit Uponfille, BUlmnp/Irrcn,. sfrt z9e936 as pn[L.ddnnn of ghats 04,saa seal Sl reen/Peronprt 100999.00 Irncl. eddrtad.019.s00ef,mrsmentlorst.) sMegB/consrete. A= 2400.00 aher. e -- ol%ne,er- Total BUlRupon Area r 40733500 0.00 1 0.00 0.00 0.00 O.W $sxlT-11Om ke /Voluor I Ooff tGaidel l BUA a DA n aar$n smrm. nrnl. Rr ADIV/01 1 NDIV 01 ro1V/01 IDIV N WIV 01 IDIV 01 Volume required, 0 0 0 0 0 a 0 Melmum Salve Me. %imprvlaue 36.94% NDIV/01 IDIV/DI Marv/OI eDIV/01 MIV/01 Ad, Dn1$p Depth a 4.5 TSSI15neor90b1 w SNDAnic 3.04% IDIV/01 41)IV/01 WIV/01 eDIV/01 4aV/01 nemlr.ereall 31762 no,101 I WN 01 I WN 01 I roN 01 roN I POWI PqWI 2 PaW3 PoMI Pmd5 Mail Tpm.aw Sear, Velum, 41c,4 0ao WtlM1m l/)mile I., Is. H IF IYr laM x'arnlPll O'd 3A Pret IN II.ow 0.050 aaw O.Ow O.OSO Low POM/M ,Also IpIV/al eDIV/01 NDIV/DI 9aV/o, YDIV/01 I Yr lAM Pre/Volune,,l 16563 0 0 0 0 0 l yr la once[/Vn,—d IA2653 roIV/01 IpIV/01 XDI RrDIVAH eDIV/W 13'.owme 2aNruler $2363 roof0 roN01 IaVOI YpIV/01 NDIV/01 Va.. PA W,.d 52363 WN 01 WN 01 roN 01 ION 01 roN 01 In, Val SedlrMnl 1 Mr I nnl 14,M Top 1)1 sldxanl AH,R . loss$ xonomolu.M Lleu lmd tow xnrMmel."Are'll 2%22 Permenem Pool EYy-- 20,% Palm peel As..• 33613 ON To,of sneM eler- 2200 Top at Relse= 3%s3 Temp. Pool Elmvie= 21.N ➢mp.Pipe Am= 41633 Temp Vel. Pow rf. 52492 0 0 0 0 0 A,.rge Depth'. 4.6 WN/01 1110N/01 NON/01 TUN/01 WN/01 FaebeyVelrle. Perm.nent peal Vol = .FE. IT o 0 0 a Rea Fe ew, Vold-2)O1 0 0 0 a 0 Pod, ioleb.y VoWm.: 29015 PYrnn,=d22Nb1sl 21% ODIVAH YDIV/0, IDIV/01 NDW/0, WIV/01 M... pump He I/I N/A N/A N/A N/A N/A Ford EMU Pmd3 False Pand P9.s193 aln[s VNr AswRioWn Ann Haped.,Flans 039 000 a.W 0.00 000 0.00 Awap Flow@ cN 0121 w1vtolail WIV/01 WIV/01 ArYwol.01wol Awap Flow DS, cN 0121 WIV/al IpIV/01 WIV/01 IOIV/01 WIV/01 WIV/al L22 Alu, p.ln.= 14.491 eDIV/al IDIV/01 IDIVl01 WIV/01 WIV/01 Q3 An.. p.le.= 5]% IDIV/01 IDIV/01 IpIV/01 IDIV/01 YpIV/01 Na. of Orifices 1 Ord.e OemMer. He 4.00 Ord.. Neap in 12.%6 0000 0,000 0.000 0.000 0.000 Wevordsl racn.4 We Lennn. inches= Wen C= CIV/0I RDIV/01 IDIV/DI al l si l IDIV/01 Wen L, eN kips= 0076 ,0DO a000 D.000 0.000 a.a00 A, Odd..,.dda1l,S 0.263 OaaO a000 0000 0.000 0.000 Runoff CeeNlc%rid cc 0.250 0.230 0250 0.250 0,290 0.2M I yr ll M rmman deals. 1. 3.w 1 yr ). R, m1 tons"1. In/le, a.Is$ 0.000 allo 0" 0.000 0000 nr9re02rN 0.95t O.aOa I O.00a I O.D00 D.pOD 0.000 All All Ilydael4",-O) N X N H N an.dwn, drys • 2.31 .3 NON 01 roN 01 ION/01 will 01 ION 01 AIfD SNF F Art. I I Min aol plants planntb s ow goo a.W o.00 O,W 000 w.wMetM pre IN Value for.A. we, ..Mr., BDA. rwrne IM1e art d.bpment r...X CC value d needed "he cooled drum to nonSR voters ba3 up IM1e nmhll depth in One NDA,4 chains Hydrograph Report Hydraflow Hydrographs by Intelisolve v9.1 Hyd. No. 1 WET DETENTION BASIN Hydrograph type = SCS Runoff Storm frequency = 10 yrs Time interval = 1 min Drainage area = 24.010 ac Basin Slope = 0.0 % Tc method = USER Total precip. = 6.30 in Storm duration = 24 hrs Composite (Area/CN) = [(9.350 x 98) + (14.660 x 39)j / 24.010 Q (cfs) 70.00 50.00 40.00 30.00 20.00 10.00 Wednesday. May 4. 2016 Peak discharge = 65.14 cfs Time to peak = 725 min Hyd. volume = 206,564 cuft Curve number = 62' Hydraulic length = 0 ft Time of conc. (Tc) = 5.00 min Distribution = Type III Shape factor = 484 WET DETENTION BASIN Hyd. No. 1 -- 10 Year Q (cfs) 70.00 50.00 40.00 30.00 20.00 10.00 0.00 ' ' ' ' ' ---I L 0.00 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 — Hyd No. 1 Time (min) 3 Hydrograph Report Hydrallow Hydrographs by Intelisolve v9.1 Hyd. No. 2 WET DETENTION BASIN Hydrograph type = Reservoir Storm frequency = 10 yrs Time interval = 1 min Inflow hyd. No, = 1 - WET DETENTION BASIN Reservoir name = WET DETENTION BASIN Storage Indication method used Wednesday, May 4, 2016 Peak discharge = 11.91 cfs Time to peak = 754 min Hyd. volume = 184,368 cuft Max. Elevation = 22.62 ft Max. Storage = 84,660 cuft WET DETENTION BASIN Q (cfs) Hyd. No. 2 -- 10 Year Q (cfs) 7000 - 70.00 6000 60.00 50.00 50.00 40.00 40.00 30.00 30.00 20.00 20.00 10.00 10.00 0.00 0.00 0 300 600 900 1200 1500 1800 2100 2400 2700 3000 Time (min) — Hyd No. 2 —Hyd No. 1 Total storage used = 84,660 cult