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HomeMy WebLinkAboutSW8110712_HISTORICAL FILE_20140529STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO SW8 1101 12 DOC TYPE ❑ CURRENT PERMIT ❑ APPROVED PLANS HISTORICAL FILE ❑ COMPLIANCE EVALUATION INSPECTION DOC DATE 2p1L-t 052q YYYYMMDD NCDENR North Carolina Department of Environment and Natural Resources Pat McCrory John E Skvarla, III Governor Secretary May 29, 2014 Chun Hoi Fung, Manager FCW&P Properties, LLC Post Office Box 1685 Jacksonville, NC 28540 Subject State Stormwater Management Permit No SW8 110712 FCW&P Properties High Density Commercial Wet Detention Pond Project Onslow, County Dear Mr Fung The Wilmington Regional Office received a complete, Stormwater Management Permit Application for FCW&P Properties on April 29, 2014 Staff review of the plans and specifications has determined that the project, as proposed, will comply with the Stormwater Regulations set forth in Title 15A NCAC 2H 1000 and Session Law 2008-211 We are forwarding Permit No SW8 110712 dated May 29, 2014, for the construction, operation and maintenance of the BMP's and built -upon areas associated with the subject project This submittal is to convert the previously approved stormwater wetlands to a wet detention basin Please replace the stormwater wetlands detail sheets C-21D and C-2E by Robertson Loia Roof and sheet 1 by Carter Crawford Design with the two (2) enclosed wet detention pond detail sheets by Crystal Coast Engineering On August 5, 2009, the Governor signed Session Law 2009-406 This law impacts any development approval issued by the Division of Energy, Mineral, and Land Resources under Article 21 of Chapter 143 of the General Statutes, which is current and valid at any point between January 1, 2008, and December 31, 2010 The law extends the effective period of any stormwater permit that was set to expire during this time frame to three (3) years from its current expiration date On August 2, 2010, the Govemor signed Session Law 2010-177, which granted an extra year for a total of four (4) years extension This permit shall be effective from the date of issuance until December 30, 2021, 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, procedures for changes of ownership, transferring the permit, and renewing the permit Failure to establish an adequate system for operation and maintenance of the stormwater management system, to record deed restrictions, to transfer the permit, or to renew the permit, will result in future compliance problems If any parts, requirements, or limitations contained in this permit are unacceptable, you have the right to request an adjudicatory hearing by filing a written petition with the Office of Administrative Hearings (OAH) The written petition must conform to Chapter 150B of the North Carolina General Statutes, and must be filed with the OAH within thirty (30) days of receipt of this permit You should contact the OAH with all questions regarding the filing fee (if a filing fee is required) and/or the details of the filing process at 6714 Mail Service Center, Raleigh, INC 27699-6714, or via telephone at 919-431-3000, or visit their website at www NCOAH com Unless such demands are made this permit shall be final and binding If you have any questions, or need additional information concerning this matter, please contact Chris Baker in the Wilmington Regional Office, at (910) 796-7215 Si erely, k/�%� �' Trac avis, P E , Dir�to� Division of Energy, Mineral and Land Resources GDS/csb G 1WQS1StormwaterlPermits & Prolects12011\110712 HD12014 05 permit 110712 cc David Newsom , P E , Crystal Coast Engineering, P A Onslow County Building Inspections Wilmington Regional Office Stormwater File Division of Energy, Mineral, and Land Resources Land Quality Section —Wilmington Regional Office 127 Cardinal Drive Extension Wilmmoton North Carolina 28405 • (910) 796 7215 / Fax (910) 350 2004 State Stormwater Management Systems Permit No SW8 110712 STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF ENERGY, MINERAL AND LAND RESOURCES STATE STORMWATER MANAGEMENT PERMIT HIGH DENSITY COMMERCIAL DEVELOPMENT In accordance with the provisions of Article 21 of Chapter 143, General Statutes of North Carolina as amended, and other applicable Laws, Rules, and Regulations PERMISSION IS HEREBY GRANTED TO FCW&P Properties, LLC FCW&P Properties Gum Branch Road, Jacksonville, Onslow County FOR THE construction, operation and maintenance of a wet detention pond in compliance with the provisions of 15A NCAC 2H 1000 and Session Law 2008-211 (hereafter collectively referred to as the "stormwaterrules') the approved stormwater management plans and specifications and other supporting data as attached and on file with and approved by the Division and considered a part of this permit This permit shall be effective from the date of issuance until December 30, 2021, and shall be subject to the following specified conditions and limitations I DESIGN STANDARDS This permit is effective only with respect to the nature and volume of stormwater described in the application and other supporting data 2 This stormwater system has been approved for the management of stormwater runoff as described in Section 17 of this permit The stormwater control has been designed to handle the runoff from 287,046 square feet of impervious area 3 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 4 The tract will be limited to the amount of built -upon area indicated in this permit, and per approved plans The built -upon area for the future development is limited to 7,500 square feet 5 All stormwater collection and treatment systems must be located in either dedicated common areas or recorded easements The final plats for the project will be recorded showing all such required easements, in accordance with the approved plans 6 The runoff from all built -upon area within the permitted drainage area(s) of this project must be directed into the permitted stormwater control system Page 2 of 7 State Stormwater Management Systems Permit No SW8 110712 rl The following design criteria have been provided in the wet detention pond and must be maintained at design condition a Drainage Area, acres Onsite, ft Offsite, ft2 b Total Impervious Surfaces, ft2 Onsite, ft Offsite, ft2 c Design Storm, inches d Average Pond Design Depth, feet e TSS removal efficiency f Permanent Pool Elevation, FMSL g Permanent Pool Surface Area, ft2 h Permitted Storage Volume, ft i Temporary Storage Elevation, FMSL I Pre-dev 1 yr-24 hr discharge rate, cfs k Controlling Orifice I Orifice flowrate, cfs m Permitted Forebay Volume, ft3 n Fountain Horsepower o Receiving Stream/River Basin p Stream Index Number q Classification of Water Body II SCHEDULE OF COMPLIANCE 12 R R 1057 460,345 N/A 287,046 287,046 N/A 15 5 90% 445 20,841 37,173 460 005 3" Ol pipe 017 22,528 1/3 UT to New River / White Oak 19-1 "C,NSW" 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 The permittee shall, at all times, provide the operation and maintenance necessary to assure the permitted stormwater system functions at optimum efficiency The signed and approved Operation and Maintenance Agreement must be followed in its entirety and maintenance must occur at the scheduled intervals Records of maintenance activities must be kept and made available upon request to authorized personnel of DENR The records will indicate the date, activity, name of person performing the work and what actions were taken Decorative spray fountains will be allowed in the stormwater treatment system, subject to the following criteria a The fountain must draw its water from less than 2' 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 The maximum horsepower for a fountain in this pond is 1/3 horsepower The facilities shall be constructed in accordance with the conditions of this permit, the approved plans and specifications, and other supporting data Page 3 of 7 State Stormwater Management Systems Permit No SW8 110712 7 Upon completion of construction, prior to issuance of a Certificate of Occupancy, and prior to operation of this permitted facility, a certification must be received from an appropriate designer for the system installed certifying that the permitted facility has been installed in accordance with this permit, the approved plans and specifications, and other supporting documentation Any deviations from the approved plans and specifications must be noted on the Certification A modification may be required for those deviations 8 If the stormwater system was used as an Erosion Control device, it must be restored to design condition prior to operation as a stormwater treatment device, and prior to occupancy of the facility 9 Access to the stormwater facilities for inspection and maintenance shall be maintained via appropriate recorded easements at all times 10 The permittee shall submit to the Director and shall have received approval for revised plans, specifications, and calculations prior to construction, for any modification to the approved plans, including, but not limited to, those listed below a Any revision to any item shown on the approved plans, including the stormwater management measures, built -upon area, details, etc b 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 protect area The protect 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 11 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 12 Approved plans 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 III GENERAL CONDITIONS Any individual or entity found to be in noncompliance with the provisions of this storrmwater management permit or the requirements of the Stormwater rules is subject to enforcement procedures as set forth in G S 143 Article 21 2 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 fad 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 Page 4 of 7 State Stormwater Management Systems Permit No SW8 110712 4 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 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, 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, e Dissolution of the partnership or corporate entity, f A name change of the current permittee, g A name change of the project, h A mailing address change of the permittee, The permittee is responsible for compliance with all permit conditions until such time as the Division approves the transfer request The permittee grants DENR Staff permission to enter the property during normal business hours for the purpose of inspecting all components of the permitted stormwater management facility The permit remains 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 a permit modification, revocation and re -issuance or termination does not stay any permit condition 8 Unless specified elsewhere, permanent seeding requirements for the stormwater control must follow the guidelines established in the North Carolina Erosion and Sediment Control Planning and Design Manual 9 The permittee shall submit a permit renewal request at least 180 days prior to the expiration date of this permit The renewal request must include the appropriate documentation and the processing fee Permit issued this the 29th day of May, 2014 RONMENTAL MANAGEMENT COMMISSION Uroision OTEnergy, Mineral and Land Resources By Authority of the Environmental Management Commission Page 5 of 7 State Stormwater Management Systems Permit No SW8 110712 FCW&P Properties Stormwater Permit No SW8 110712 Onslow Countv Designer's Certification I, , as a duly registered in the State of North Carolina, having been authorized to observe (periodically/ weekly/ full time) the construction of the protect, (Protect) for (Protect Owner) hereby state that, to the best of my abilities, due care and diligence was used in the observation of the protect construction such that the construction was observed to be built within substantial compliance and intent of the approved plans and specifications The checklist of items on page 2 of this form is included in the Certification Noted deviations from approved plans and specifications Signature Registration Number Date SEAL Page 6 of 7 State Stormwater Management Systems Permit No SW8 110712 Certification Requirements 1 The drainage area to the system contains approximately the permitted acreage 2 The drainage area to the system contains no more than the permitted amount of built -upon area 3 All the built -upon area associated with the project is graded such that the runoff drams to the system 4 All roof drains are located such that the runoff is directed into the system 5 The outlet structure elevations are per the approved plan 6 The outlet structure is located per the approved plans 7 Trash rack is provided on the outlet structure 8 All slopes are grassed with permanent vegetation 9 Vegetated slopes are no steeper than 3 1 10 The inlets are located per the approved plans and do not cause short-circuiting of the system 11 The permitted amounts of surface area and/or volume have been provided 12 Required drawdown devices are correctly sized and located per the approved plans 13 All required design depths are provided 14 All required parts of the system are provided, such as a vegetated shelf, and a forebay 15 The required system dimensions are provided per the approved plans 16 All components of the stormwater BMP are located in either recorded common areas, or recorded easements cc NCDENR-DEMLR Wilmington Regional Office Onslow County Building Inspections Page 7 of 7 - DWQ USE ONLY Date Received Fee Paid Permit Number 0c f 11 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 Mgmt Plan State of North Carolina Department of Environment and Natural Resources Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM This form may be photocopied for use as an original I GENERAL INFORMATION 1 Project Name (subdivision, facility, or establishment name - should be consistent with project name on plans, specifications, letters, operation and maintenance agreements, etc ) FCW&P Propeerties,3±:t— 2 Location of Project (street address) NCSR 1308 (Gum Branch Road) & NC Hwy 53 (formerly NCSR 1470) City Jacksonville County Onslow Zip 28546 3 Directions to project (from nearest major intersection) From the intersection of NC 24 and US 17 in Jacksonville, north on US 17 approximately 2 3 miles to NC 53 (Western Blvd), left on NC 53 approx 5 6 miles, site on right 4 Latitude 340 48' 00 9" N Longitude 77' 26' 18 4" W of the main entrance to the project II PERMIT INFORMATION 1 a Specify whether project is (check one) ❑New ®Modification ❑ Renewal w/ Modification[ tRenewals with modifications also requires SWU-102 - Renewal Application Form b If this application is being submitted as the result of a modification to an existing permit, list the existing permit numberSW8 110712 Mod , its issue date (if known)9/30/11 and the status of construction []Not Started ❑Partially Completed* ® Completed* *provide a designer s certification 2 Specify the type of project (check one) ❑Low Density ®High Density ❑Drams to an Offsite Stormwater System ❑Other 3 If this application is being submitted as the result of a previously returned application or a letter from DWQ requesting a state stormwater management permit application, list the stormwate o e rct number, if fin assigned, n/a and the previous name of the project, if differ (E64a> pie IF proposed, n/a DD ��Il��t/C 4 a Additional Project Requirements (check applicable blanks, information on require s te� M�s�a N& obtained by contacting the Customer Service Center at 1-877-623-6748) ❑LAMA Major ®Sedunentation/Erosion Control 2 0 ac of D stur e ❑NPDES Industrial Stormwater ❑404/401 Permit Proposed Impacts b If any of these permits have already been acquired please provide the Project Name, Project/Permit Number, issue date and the type of each permit Is the project located within 5 miles of a public airport? ®No ❑Yes If yes, see S L 2012-200, Part VI htto //portal ncdenr org/web/wq/ws/su/statesw/rules laws Form SWU-101 Version 06Aug2012 Page I of 6 III CONTACT INFORMATION 1 a Print Applicant / Signing Official's name and title (specifically the developer, property owner, lessee, designated government official, individual, etc who owns the oroiect) Applicant/Organization FCW&P Properties, LLC Signing Official&Title. Chun-Hol Fung, Manager b Contact mformahon for person listed in item la above Street Address City Jacksonville Mailing Address (if applicable) P O Box 1685 City lacksonville Phone (910 ) 346-9800 Email State NC Zip 28540 State NC Zip 28540 Fax (910 J 346-1210 Please check the appropriate box The applicant listed above is ® The property owner (Skip to Contact Information, item 3a) ❑ Lessee' (Attach a copy of the lease agreement and complete Contact Information, item 2a and 2b below) ❑ Purchaser" (Attach a copy of the pending sales agreement and complete Contact Information, item 2a and 2b below) ❑ Developer' (Complete Contact Information, item 2a and 2b below) 2 a Print Property Owner's name and title below, if you are the lessee, purchaser or developer (This is the person who owns the property that the project is located on) Property Owner/Organization Signing Official & Title b Contact information for person listed in item 2a above Street Address City Mailing Address (if applicable) City Phone ( ) Email State State Fax ( 1 Zip Zip 3 a (Optional) Print the name and title of another contact such as the project's construction supervisor or other person who can answer questions about the project Other Contact Person/Organization Signing Official & Title b Contact information for person listed in item 3a above Mailing Address City Phone I Email 4 Local jurisdiction for budding permits State Fax Point of Contact Danny Bryan Phone # Form SWU-101 Version 06Aug2012 Page 2 of 6 Zip IV PROJECT INFORMATION 1 In the space provided below, briefly summarize how the stormwater runoff will be treated Existing Constructed Wetland will be enlarged and converted to Wet Pond to accommodate existing as well a If claiming vested rights, identify the supportmg 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 4 Total Property Area 10 57 acres River basin 5 Total Coastal Wetlands Area -0- acres 6 Total Surface Water Area -0- acres 7 Total Property Area (4) — Total Coastal Wetlands Area (5) — Total Surface Water Area (6) = Total Project Area' 10 57 acres Total project area shall be calculated to exclude thefollowing the normal pool of impounded structures, the area between the banks of streams and rivers, the area below the Normal High Water (NHW) line or Mean High Water (MHW) line, and coastal wetlands landward from the NHW (or MHW) line The resultant project area is used to calculate overall percent built upon area (BUA) Non -coastal wetlands landward of the NHW (or MHW) line may be included in the total project area 8 Project percent of impervious area (Total Impervious Area / Total Project Area) X 100 = 62 4 % 9 How many drainage areas does the project have?l (For high density, count 1 for each proposed engineered stormwater BMP For low density and other projects, use 1 for the whole property area) 10 Complete the following information for each drainage area identified in Project Information item 9 If there are more than four drainage areas in the project, attach an additional sheet with the information for each area provided in the same format as below Basin Information Drainage Area _ Drainage Area _ Drainage Area _ Drainage Area _ Receiving Stream Name UT to New River Stream Class * C,NSW Stream Index Number * 19-1 Total Drainage Area (sf) 460,345 sf On -site Drainage Area (sf) 460,345 sf Off -site Drainage Area (sf) -0- Proposed Impervious Area** (sf) 287,046 sf % Impervious Area** (total) 624 Impervious" Surface Area Drainage Area _ Drainage Area Drainage Area Drainage Area _ On -site Buildings/Lots (sf) 48,795 sf On -site Streets (so -0- On-site Parking (so 115,450 sf On -site Sidewalks (so 14,672 sf Other on -site (so Future (so 7,500 sf DV Off -site (sf) 4, 1 a Existing BUA*** (sf) —49"2tsf— C6 Xop Total (sf) 287,046 sf Stream Class and Index Number can be determined at httt //vortal ncdenr org/web/evq/ys/esu/classifications * Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas, Sidewalks, gravel areas, etc Form SWU-101 Version 06Aug2012 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 How was the off -site impervious area listed above determined? Provide documentation n/a Projects in Union County Contact DWQ Central Office staff to check if the project is located within a Threatened & Endangered Species watershed that may be subject to more stringent stormwater requirements as per 15A NCAC 02B 0600 V SUPPLEMENT AND O&M FORMS The applicable state stormwater management permit supplement and operation and maintenance (O&M) forms must be submitted for each BMP specified for this project The latest versions of the forms can be downloaded from httn //portal ncdenr org/web/wq/ws/su/bmp-manual VI SUBMITTAL REQUIREMENTS Only complete application packages will be accepted and reviewed by the Division of Water Quality (DWQ) A complete package includes all of the items listed below A detailed application instruction sheet and BMP checklists are available from htt2 ////portal ncdenr org/web/wq/ws/su/statesw/forms does The complete application package should be submitted to the appropriate DWQ Office (The appropriate office maybe found by locating project on the interactive online map at http / /portal ncdenr org/web/wq/ws/su/maps ) Please indicate that the following required 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 httj2 //portal ncdenr org/web/wq/ws/su/statesw/forms does to 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 r/ 4 Permit application processing fee of $505 payable to NCDENR (For an Express review, refer to /�, /(/ htto ///www envhelenvhelp org/12ages/onestopexpress html for information on the Express program and the associated fees Contact the appropriate regional office Express Permit Coordinator for additional information and to schedule the required application meeting) �/ 5 A detailed narrative (one to two pages) describing the stormwater treatment/managementfor the project This is required in addition to the brief summary provided in the Project Information, item 1 6 A USGS map identifying the site location If the receiving stream is reported as class SA or the receiving stream drains to class SA waters within'i mile of the site boundary, include the'rz mile radius the map LDIZ , 7 Sealed, signeded and dated calculations (one copy) Q�(,�r'r�a/v�(/�X 8 Two sets of plans folded to 8 5" x 14" (sealed, signed, & dated), including a Development/Project name b Engineer and firm c Location map with named streets and NCSR numbers d Legend e North arrow f Scale g Revision number and dates h Identify all surface waters on the plans by delineating the normal pool ON. VEIM impounded structures, the banks of streams and rivers, the MHW or N e waters, and any coastal wetlands landward of the MHW or NHW lines 5 51p6 a y flab • Delineate the vegetated buffer landward from the normal pool elev i n A�j u M structures, the banks of streams or rivers, and the MHW (or NHW) dal waters i Dimensioned property/project boundary with bearings & distances By j Site Layout with all BUA identified and dimensioned k Existing contours, proposed contours, spot elevations, finished floor elevations 1 Details of roads, drainage features, collection systems, and stormwater control measures in 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 Form SWU-101 Version 06Aug2012 Page 4 of 6 10 11 o Drainage areas delineated (included in the main set of plans, not as a separate document) p Vegetated buffers (where required) Copy of any applicable sods report with the associated SHWT elevations (Please identify 4�I 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 DWQ to verify the SHWT prior to submittal, (910) 796-7378 ) A copy of the most current property deed Deed book 2930 Page No 903-904 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 hM2 / /www secretary state nc us/Corporations/CSearch aspx VII DEED RESTRICTIONS AND PROTECTIVE COVENANTS For all subdivisions, outparcels, and future development, the appropriate property restrictions and protective covenants are required to be recorded prior to the sale of any lot If lot sizes vary significantly or the proposed BUA allocations vary, a table listing each lot number, lot size, and the allowable built -upon area must be provided as an attachment to the completed and notarized deed restriction form The appropriate deed restrictions and protective covenants forms can be downloaded from htto //portal ncdenr org/web/wq/ws/su/statesw/forms does Download the latest versions for each submittal In the instances where the applicant is different than the property owner, it is the responsibility of the property owner to sign the deed restrictions and protective covenants form while the applicant is responsible for ensuring that the deed restrictions are recorded By the notarized signature(s) below, the permit holder(s) certify that the recorded property restrictions and protective covenants for this project, if required, shall include all the items required in the permit and listed on the forms available on the website, that the covenants will be binding on all parties and persons claiming under them, that they will run with the land, that the required covenants cannot be changed or deleted without concurrence from the NC DWQ, and that they will be recorded prior to the sale of any lot VIII CONSULTANT INFORMATION AND AUTHORIZATION Applicant Complete this section if you wish to designate authority to another individual and/or firm (such as a consulting engineer and/or firm) so that they may provide information on your behalf for this project (such as addressing requests for additional information) Consulting Engineer David K Newsom PE Consulting Firm Crystal Coast Engineering, PA Mailing Address City Swansboro Phone (910 ) 325-0006 Email crystalcoastengQbizec rr com State NC Zip 28584 Fax (910 ) 325-0060 IX PROPERTY OWNER AUTHORIZATION (if Contact Information, item 2 has been filled out, complete this section) I, (print or type name of person listed in Contact Information, item 2a) certify that I own the property identified in this permit application, and thus give permission to (print or type name of person listed in Contact Information, item 1a) with (print or type name of organization listed in Contact Information, item 1a) to develop the project as currently proposed A copy of the lease agreement or pending property sales contract has been provided with the submittal, which indicates the party responsible for the operation and maintenance of the stormwater system IECEME APR 2 9 2014 Form SWU-101 Version 06Aug2012 Page 5 of 6 BY As the legal property owner I acknowledge, understand, and agree by my signature below, that if my designated agent (entity listed in Contact Information, item 1) dissolves their company and/or cancels or defaults on their lease agreement, or pending sale, responsibility for compliance with the DWQ Stormwater permit reverts back to me, the property owner As the property owner, it is my responsibility to notify DWQ immediately and submit a completed Name/Ownership Change Form within 30 days, otherwise I will be operating a stormwater treatment facility without a valid permit I understand that the operation of a stormwater treatment facility without a valid permit is a violation of NC General Statue 143-2151 and may result in appropriate enforcement action mcluding the assessment of civil penalties of up to $25,000 per day, pursuant to NCGS 143-215 6 Signature a Notary Public for the State of do hereby certify that Date County of personally appeared before me this _ day of and acknowledge the due execution of the application for a stormwater permit Witness my hand and official seal, SEAL My commission X APPLICANT'S CERTIFICATION I, (print or type name of person listed in Contact Information, item 1-' Chun Hoi Fung, Manager certify that the information included on this permit application form is, to the best of my knowledge, correct and that the project will be constructed in conformance with the approved plans, that the required deed restrictions and protective covenants will be recorded, and that the proposed project complies with the requirements of the applicable stormwat rules under 15A NCAC 2H 1000 and any other applicable state stormwater requirements Signatur;�/ Date d� Public do hereby certify that (/// before me this4kday of �/��and a stormwater permit Witness my hand and official seal, _ SEAL the State of L(/���/G/J� sG/. County of personally appeared due exFcution of the application for My commission expires�/ Form SWU-101 Version 06Aug2012 Page 6 of 6 ecrvv' APR 2 9 2014 BY Casmer,,Jo From Casmer, Jo Sent Thursday, May 08, 2014 4 34 PM To Newsom, David Subject FCW&P Properties, Stormwater Permit SW8 110712 The Wilmington Regional Office of the Division of Energy, Mineral, and Land Resources (Stormwater Section) received the Stormwater Permit Modification Application and $505 00 fee on April 29, 2014 Your project will be assigned to a staff member and you will be notified if additional mfomration is needed Please be advised that the construction of built -upon area may not commence until the Stormwater Pernnt is issued Since we do not have an email address for the applicant, we ask you please notify them of the current status Jo Casmer Administrative Assistant IV NC Department of Environment & Natural Resources Division of Environmental Assistance & Customer Service 127 Cardinal Drive Extension Wilmington, NC 28405 Phone (910) 796-7336 Fax (910) 350-2004 Emart correspondence to and from this address may be subject to the North Carolina Pubtrc Records Law and may be disclosed to third parties t,ompiexeness rsevnew t,necrcux Project Name f r r +- P Abaer-�A., Received Date 2v/ Project Location ��,5 &� 2 Accepted Date Lt0 Rule(s) 131608 Coastal ®1995 Coastal ❑Phase II (WiRO) Universal 1:31988 Coastal Type of Permit New o Mod or PR Existing Permit # (Mod or PR) f pZ (y �PE Cert on File? -I Type -, OK?) I Stream Class Map Paperwork Emaded Engineer on p�plement(s) (1 original per BMP) BMP Type(s) n0&Mwith correct/original signatures (1 original per BMP except LS/VFS and swal/es) p6catio ith correct/original signatures tl rp or LLC Sig Auth ! or letter mad Address �05 (within 6mo) Email Address to SW8 Design Engineer Owner ®Soils Report with SHWT Note to Reviewer, Iculations(signed/sealed) / � Ots-J — _ ❑No obvious errors ��� cAe Ct— ""� Density includes common areas, etc ad Restrictions, if subdivided & Notarized u Plans ❑2 Sets mty Map infiltration Soils Report Additional Information parmrtted Details (roads, cul-de-sacs, curbs, sidewalks, BMPs, Buildings, etc) rids Delineated or No Wetlands Layout (proposed BUA dimensions) DA Maps Wet Pond Soils Report �SHWT PP Pronosed Offsite Cert for Master Boundaries JDeed Rest for Master BUA Permitted (Master) BUA Proposed (Offsite) Proposed Lot # Lot # Matches Master sf sf Proposed BUA (sf) DA (sf) PP (el) SHWT (el) Depth (ft) SA (sf) JOHN L. PIERCE & ASSOCIATES, P.A LAND SURVEYING — LAND PLANNING — MAPPING P 0 BOX 1685 JACKSONVILLE, NC 28541 OFFICE (910) 346 9800 FAX (910) 346-1210 E-MAIL bettvbnilonc corn Or bnani(agdonc com TO Mr Chris Baker N C Department of Environment and Natural Resources — Department of Stormwater 127 Cardinal Drive Extension Wilmington, NC 28405 Letter of Transmittal DATE April 28, 2014 ATTENTION Mr Chris Baker Re FCW& P Properties LLC —NC Hwy 53 Westem Blvd & Gum Branch Road COPIES DATE NUMBER DESCRIPTION 2 Sets of plans 2 Stormwater applications with calculations 1 Check in the amount of $505 00 2 Narrative & Quad Ma 1 Copy of Deed of Record 1 Copy of Articles of Organization 1 Copy of Annual Report SIGNED Page 1 bf 2 4 IIWY W11 �„I��.MII�MP�1n11Y111„NIW ����� Doc ID 0,00011500002 TYne CRP Recorded 08/IS/2007 at 03 24 35 P" Fee Amt $2, 167 DO Page 1 of 2 Excl se Tax $2,150 o0 On e).OM Cc Unty, (� naryland K Washington Reg Of Deeds SK2930 Pa903-904 This deed presented to The nslow Co Tax Qfce Datt - Cluj Delinquent taxes, if any, will be paid to the Onslow County Tax Collector out of the closing proceeds by the closing attorney NORTH CAROLINA GENERAL WARRANTY DEED Excise Tax $2,1 50 00 Recording Time Book and Page above This instrument prepared by Gaylor, Edwards and Vatcher, Attorneys 219 New Bridge St , Jacksonville NC Tax parcel 339-17 Mail after recording to F C W & P Properties LLC, attn Chun Hoi Fung, 722 Lynchburg Drive Jacksonville NC 28546 Brief description for index Tract II 9 98 acres Revised Recomb Map for WBP III, LLC Map Bk 53, Pg 233 THIS DEED made this I$ day of August, 2007 by and between GRANTOR * GRANTEE * W B P III, LLC, a North Carolina * F C W& P PROPERTIES, LLC, a North limited liability company Carolina limited liability company The designation Grantor and Grantee as used herein shall include said parties their heirs, successors and assigns and shall include singular plural, masculine, feminine or neuter as required by context WITNESSETH, that the Grantor, for a valuable consideration paid by the Grantee, the receipt and sufficiency of which is hereby acknowledged, has and by these presents does grant, bargain sell and convey unto the Grantee, in fee simple, all that certain tract lot or parcel of land, situated in Jacksonville Township, Onslow County, North Carolina and more particularly described as follows BEING all of Tract II, containing 9 98 acres as shown and described on a plat entitled, Revised Recombination Map Prepared For WBP III, LLC, Showing Tract I, Tract II & Tract III , dated August 7, 2007, prepared by John L Pierce & Associates, P A and recorded in Map Book 53, Page 233, Slide M-107 in the office of the Register of Deeds of Onslow County, North Carolina TOGETHER WITH AND SUBJECT TO that certain Cross -Access, Utility Easements, Accessways Construction, Maintenance and Restrictive Use Declaration recorded in Book 2861 Page 591 in the office of the Register of Deeds of Onslow County, North Carolina t \WPDOCYCEWORWA UCO EEO WBP FCW&P Wpa Book 2930 Page, 1977-Current 903 Seq 1 C -- Page 21of 2 1 ALSO TOGETHER WITH AND SUBJECT TO all easements and minimum building setback Imes as shown on the map recorded in Map Book 53, Page 233, Onslow County Registry This conveyance is made subject to the reservation of mineral rights by Weyerhaeuser Company by deeds recorded in Book 719 Page 441, Book 807, Page 734 and Book 807, Page 745, Onslow County Registry This conveyance is made subject to ad valorem taxes for 2007 and thereafter The property heremabove described is a portion of the property acquired by Grantor by instrument recorded in Book 1489, Page 106, Onslow County Registry TO HAVE AND TO HOLD the aforesaid tract, lot or parcel of land and all privileges and appurtenances thereto belonging to the Grantee in fee simple THE GRANTOR COVENANTS WITH THE GRANTEE, that Grantor is seized of the premises in fee simple, has the right to convey the same in fee simple, that title is marketable and free and clear of all encumbrances, and that Grantor will warrant and defend the title against the lawful claims of all persons whomsoever except for the exceptions hereinafter stated Title to the property heremabove described is subject to the following exceptions 1 Cross -Access, Utility Easements, Accessways Construction, Maintenance and Restrictive Use Declaration recorded in Book 2861, Page 591 2 Mineral rights reservations by Weyerhaeuser Company recorded in Book 719 Page 441 Book 807 Page 734 and Book 807, Page 745 3 Minimum building setback lines easements and other matters shown on the maps recorded in Map Book 53, Page 233 4 Sixty (60) foot ingress & egress easement recorded in Book 949, Page 91 5 Stormwater and Drainage Easement recorded in Book AT 30, page 847 IN WITNESS WHEREOF, the Grantor has hereto set his/her hand and seal, or7t76rp6rate or otftur— entity, has caused this instrument to be executed by its duly authorized partner(s), manager(s) or officer(s), the day and year first above written W B P III, LLC, a North Carolina limited liability company ( (Seal) By JOHA L PIERCE Its Manager STATE OF NORTH CAROLINA COUNTY OF ONSLOW The undersigned a Notary Public in and for the county and state aforesaid, does hereby certify that JOHN L PIERCE personally appeared before me this date and acknowledged that he is the Manager of W B P III LLC, a North Carolina limited liability company, and that with authority duly given and as the act and deed of said limited liability company, the foregoing instrument was signed by him as its Manager for the purposes set forth therein Witness my hand and official stamp or seal, this �S day of August, 2007 f) I r �,\$" Book 2930 Page,1977-Current 903 Seq 2 C200714500206 918176 ARTICLES OF ORGANIZATION OF F C W & P PROPERTIES, LLC Date Filed 5/25/2007 3 43 00 PM Elaine F Marshall North Carolina Secretary of State C200714500206 The undersigned, does hereby make and acknowledge these Articles of Organization for the purpose of forming a limited liability company under and by virtue of the laws of the State of North Carolina, as contained in Chapter 57C of the General Statutes of North Carolina, entitled, "North Carolina Limited Liability Company Act" and to that end does hereby set forth 1 The name of the limited liability company is "F C W & P PROPERTIES, LLC" 2 There shall be no limit on the duration of existence of the limited liability company, other than dissolution pursuant to the terms of its written operating agreement, the unanimous consent of its members or as otherwise provided by law 3 The name and address of each organizer executing these Articles of Organization is as follows J Dewey Edwards, Jr P O Box 1057 219 New Bridge Street Jacksonville, NC 28540 4 The street address and county of the initial registered office of the limited liability company is 722 Lynchburg Drive, Jacksonville Onslow County, North Carolina 28546, the mailing address of the initial registered office of the limited liability company is 722 Lynchburg Drive, Jacksonville, North Carolina 28546, and the name of the initial registered agent of the limited liability company at such address is Chun Hoi Fung 5 Except as provided by NCGS Section 57C-3-20(a), the members of this limited liability company shall not be managers by virtue of their status as members 6 These Articles of Organization shall be effective upon filing of same by the North Carolina Secretary of State In Testimony Whereof, the undersigned has executed or caused this instrument to be properly executed in his name, this the 22"d day of May, 2007 Prepared by and return to J Dewey Edwards, Jr Gaylor, Edwards and Vatcher P O Box 1057 219 New Bridge Street Jacksonville, North Carolina 28540 Telephone (910) 455-9494 J D y Edwards, Jr 11 Organizer ECEIVE APR 2 9 20% BY AMENDMENT TO OPERATING AGREEMENT OF F C W & P PROPERTIES, LLC (the "Company") THIS AMENDMENT TO OPERATING AGREEMENT OF F C W & P PROPERTIES, LLC, is made effective as of the 1" day of August, 2012, by the undersigned, being all of the Members of the Company The Operating Agreement of the Company, effective as of May 27, 2007 (the "Operating Agreement"), is hereby amended as follows 1 Article III - Rights and Duties of Managers, Section 3 1 - Management, is amended by deleting all of the terms and provisions in Section 3 1, and substituting the following 31 Management The business and affairs of the Company shall be managed by the Manager or Managers In addition to the powers and authorities expressly conferred by this Agreement upon the Manager(s), the Manager(s) shall have full and complete authority, power and discretion to manage and control the business of the Company, to make all decisions regarding those matters and to perform any and all other acts or activities customary to or incident to the management of the Company's business, except only as to those acts as to which approval by the Members is expressly required by the Articles of Organization, this Agreement, the Act or other applicable law At any time when there is more than one Manager (a) the approval of all Managers is expressly required, provided however, either Manager, without the joinder of the other Manager, shall be entitled to execute any document or instrument required or permitted by law (i) to be filed, registered, or recorded with any public authority, or (u) to be executed by a limited liability company, and said action shall be binding upon the Company as to third parties without further written documentation of such approval, (b) the Managers may elect one or more officers who may, but need not, be Members or Managers of the Company, with such titles, duties and compensation as may be designated by the Managers, subject to any applicable restrictions specifically provided in this Agreement or contained in the Act 2 Article III - Rights and Duties of Managers, Section 3 2 - Appointment, General Authority and Power of Manager, is amended by deleting the first paragraph in Section 3 2 and substituting the following 32 Appointment, General Authority and Power of Manager CHUN HOI FLING and JOHN L PIERCE are hereby appointed, designated, and named Managers of the Limited Liability Company Each manager shall serve until his death, mental incompetence, resignation, or removal by the Member(s) Upon the death, mental incompetence, resignation, or removal as a Manager, the Member(s) shall elect/appoint a replacement Manager, unless otherwise determined by the Member(s) of the Limited Liability Company The Member(s) shall elect a new manager or managers upon the death, mental incompetence, resignation, or removal of the last surviving Manager Any Manager who acts beyond the scope of the authority granted by the Operating Agreement, as hereby amended, in addition to any other remedy available to the Company or Member(s), shall be liable foi damages to the Company and each Member for any losses or damages, including attorney fees and expenses, that they may incur or suffer as a consequence of such act 3 Except as hereby amended, the terms and provisions of the Operating Agreement are hereby ratified and confirmed IN WITNESS WHEREOF, the undersigned, being the imttal Manager, and all of the Members of the Company, have caused this Agreement to be duly adopted by the Company as of the 1 st day of August, 2012, and do hereby assume and agree to be bound by and to perform all of the terms and provisions set forth in this Agreement The undersigned Members do further consent to the appointment of the Manager and successor Manager set forth in this Agreement HOI FUNG - MEM YUEN CHIK CHEUNG - MEMBER /��6 -P'� I/t/M HONG DA WU - MEMBER JO L IERCE -MEMBER The Undersigned hereby consent to their appointment as a Manager in accordance with the terms of the foregoing Operating Agreement CHUM HOI FUNG - MANYWER JOHN L PIERCE -MANAGER North Carolina Secretary of State Page 1 of 2 Account Login Register North Carolina Elaine F Marshall DEPARTMENT OFTHE Secretary SECRETARY OF STATE PO Box 29622 Raleigh, NC 2762"622 (919)607 2000 Date 4/28/2014 Click here to View Document Filings I File an Annual Report I J Print a Pre -populated Annual Report Fillable PDF Form I Amend A Previous Annual Report Corporation Names Name Name Type NC F C W & P PROPERTIES LLC LEGAL Limited Liability Company Information SOSID 0918176 Status Current -Active Effective Date 5/25/2007 Citizenship DOMESTIC State of Inc NC Duration PERPETUAL Annual Report Status CURRENT Registered Agent Agent Name FLING CHUN HOI Office Address 722 LYNCHBURG DR JACKSONVILLE NC 28546 Mailing Address 722 LYNCHBURG DR JACKSONVILLE NC 28546 Principal Office Office Address 722 LYNCHBURG DR JACKSONVILLE NC 28546 Mailing Address 722 LYNCHBURG DR JACKSONVILLE NC 28546 Officers/Company Officials Title MANAGER Name YUEN CHIK CHEUNG Business Address 371 ROYAL BLUFF ROAD JACKSONVILLE NC 28546 Title MANAGER Name CHUN HOI FLING Business Address 722 LYNCHBURG DR JACKSONVILLE NC 28546 Title MEMBER Name HONG DA WU http //www secretary state nc us/corporations/Corp aspx?PitemId=8216530 4/28/2014 CA Q 1' a / �'r�y •' F,L Design Calculations 1 143 Stormwater Treatment Facilities for y�F^., i�ti� 50�,• FCW&P Properties N CVS - Gum Branch Road (Basin 2 Modification) located in Onslow County 1 PROJECT DESCRIPTION Crystal Coast Engineering, PA 205 3 Ward Road Swansboro NC 28584 910 325 0006 Business License C 2553 Enlargement and convershon of existing constructed wetland into a wet pond to serve additional area 2 COMPUTE POND AREA REQUIRED a Compute Percent Imoervious Existing BUA Proposed BUA CVS Lot 1 Lot 2 Lot 3 Lot 3 Vacant S&J Farms Vacant Subtotal Subtotals Building 3,660 3 660 48,795 52 455 Street 10,798 3 820 1376 15 994 15,994 Parking 13,460 13,460 115 450 128 910 Sidewalks 830 830 14,672 15 502 Other 22,429 22,429 22,429 Fut Reserve 36 442 7,814 44,256 7 500 51,756 0 Subtotal 1 22,429 47,240 29 584 1 376 100 629 186 417 287,046 Total Area Drainage to Pond 460,345 SF Percent Impervious = 0 624 or 624 % b Compute Pond Surface Area Using Surface Area to Drainage Area Ratio Chart for 90% TSS Removal (copy attached) and assuming 4 94 foot pond depth SA/DA = 4 52 % (interpolated - Select from Highlighted Cell in SA/DA) Therefore Surface Area = SA/DA x Drainage Area = 20,830 SF say 20,841 SF must be > 20,830 SF c Compute Minimum Pond Dimensions Assume rectangular shape with 3 1 Length (L) to Width (W) Ratio ee v vV APR 2 9 2014 BY !/5 Min Length = 249 98 feet Min Width = 83 33 feet Site conditions, however dictate irregular shaped pond Hydr Length = 370 0 feet so Hydr Width (a\ 56 3 feet (avg) Actual L/W = 6 6 (irregular shape) 3 DETERMINE REQUIRED STORAGE VOLUME Design Rainfall Depth = 1 5 inches Using Schuler "Simple Method" Rv = 0 05 + 0 009(I) where I = percent impervious Rv = 0 611 in/in Control Volume = Design Rainfall x Rv x Drainage Area Control Volume = 35 170 CF 4 DETERMINE REQUIRED STORAGE DEPTH Assume 3 1 side slopes solving for depth (d) by trial & error d = 1 54 5 DETERMINE ORIFICE SIZE SaYNNME37 173 CF Must be > 35.170 SF Control Volume must be drawn down over a 2 day - 5 day penod Using orifice equation solve for Diameter (D) that results in 3-1/2 day penod D=(Q/0026(h)e)e Where Q = (Control Volume / 3 5 days x 86 400 sec/day) 0 123 cfs h=D/3 =051 Solving for D D = 257 Use 3 00 " pipe Actual Drawdown with actual drawdown pipe diameter (using orifice equation) Q= 0 168 cfs Draw Down Period = 2 43 days OK, < 5 0 %r 6 SELECT OUTLET STRUCTURE SIZE Size outlet structure such that depth of Q10 flow < or + to 1 5 Feet Using Rational Formula (Q=CIA) where Cimper = 0 8 Cpery = 02 Ccum = 056 110 = 7 50 in/hr A = 10 57 ac Q10 = 44 01 cfs Using Francis Formula (Q=3 OLH' 5) to solve for L such that H = 1 5 Feet Min L = 7 986 Linear Feet Use 12 Linear Foot Weir Use 5 Square Precast Structure 7 DETERMINE Q10 STAGE Q10 = 44 01 cfs From Routing Analysis, H10 = 2 39 8 DETERMINE Q100 STAGE (ELEV OF EMERGENCY SPILLWAY) Using Rational Formula (Q=CIA) where Cimper = 08 Cpery = 02 Ccum = 056 1100 = 9 50 in/hr A= 1057ac Q100 = 55 75 cfs From Routing Analysis H100 = 2 83 9 DETERMINE Q100 STAGE OVER EMERGENCY SPILLWAY (TOP BERM ELEV ) Assume primary spillway blocked (i a emergency spillway to accommodate Q100) Emergency spillway shall be a broad crested earthern weir designed to pass 100 year storm Using broad crested weir equation H = (Q/(Cw x L))" where Q = Q101 55 75 cfs Cw=30 Length = 30 feet H = 0 73 feet 3r5 10 FOREBAY SIZING Compute Actual Pond Volumes (using average end method) Avg Incr Incr Cum Main Bay Volume Elevation Area SFJ Area SF Depth (FT) Vol (CF) Vol (CF) Pond Bottom 3400 1,358 Bottom Veg Shelf 4400 13 222 7 290 1000 72 900 72,900 Normal Pond 4450 16,981 15 102 050 7,551 80,451 Main Bay Volume = 80,451 CF Forebay Volume Elevation Area SF Area SF Depth (FT) Vol (CF) Vol (CF) Pond Bottom 3400 431 Normal Pond 4450 3 860 2,146 1050 22 528 22 528 Forebay Volume = 22,528 CF Total Pond Volume = 102,979 CF Total Pond Area = 20 841 SF Forebay Volume equates to 21 9 % of Total Volume Must be > 18% and < 22% Average Pond Depth = 4 94 feet Compare to assumed Dept l 4 94 feet Cum Temp Storage Volume Elevation Area SF Area SF Depth (FT) Vol (CF) Vol (CF) Normal Pond 4450 20,841 Top Shelf 4500 24 503 22,672 050 11 336 11 336 Temp Pond Level 46001 27,170 25 837 1 00 25,837 37,173 Temporary Level should be 4604 or greater Temp Pool Volume = 37 173 CF 11 SUMMARY Pond Elevations Top Berm (minimum) H= 0 73 100-Yr Storm H100= 283 10-Yr Storm H70= 239 1-inch Storage storage depth = 1 50 Permanent Pool pond tlepth = 10 50 Relative Actual 1556 4806 1483 47 33 (emerg weir elev) 1439 4689 1200 46 00 (primary weir elev) 1050 44 50 (invert out elev) 0 3400 12 WET DETENTION BASIN SUPPLEMENT Site Characteristics Drainage Area 460,345 sf Impervious Area 287,046 sf % Impervious 624 % Design Rainfall Depth 1 5 in Storage Volume Min Volume Required 35 170 cf Volume Provided 37 173 cf Peak Flow Calculations 1-yr 24 hour rainfall depth 3 65 in Rational C, predevelopment 015 Rational C, post development 056 Rainfall Intensity 1 yr 24 hr 0 15 m/hr Pre Dev Q1(24 hour) 024 cfs Post Dev Q1 (24 hour) 089 cfs Pre/Post Flow Control 065 cfs Basin Elevations Basin Bottom Elevation 33 00 feet (Elev) Sediment Cleanout Elevation 34 00 feet (Elev) Permanent Pool Elevation 44 50 feet (Elev) Temporary Pool Elevation 46 00 feet (Elev) Volume and Surface Area Calculations SA/DA ratio 452 Surface Area Required 20,830 sf Surface Area Provided 20 841 sf Permanent Pool Volume 102,979 cf Average Depth 494 feet Forebay Volume 22,528 cf Forebay % of Total Volume 21 9 % Temporary pool Area 27 170 sf Drawdown Calculations Drawdown Time 2 43 days Discharge Rate 0 168 cfs Pre Dev Q1(24 hour) 0 24 cfs Post Dev Q1 (24 hour) 0 17 cfs Additional Information Diameter of orifice 300 in Design TSS Removal 90 % Basin Side Slopes 3 1 Vegetated Shelf Slope 10 1 Vegetated Shelf Width 10 ft Length to Width Ratio 7 1 Trash Rack? Yes Freeboard Provided? Yes Vegetated Filter Provided? No Recorded Easement? Yes Captures all Runoff? Yes Drain Mechanism Pump ,NH,55 •rrrrr .� Simplified Routing Procedure - 10 Year Storm = S I_ - Crystal Coast Engineering, PA 205 3 Ward Road Project lFCW&P Swansboro NC 28584 Date 1 4/8/2014 l Fly �NEEP O 910 3250006 ; Business License C 2553 •••`•q.n n. N Ir Increment (— 1�minutes (Must be < 29 / minutes) I Orifice Weir Pump Total Total Time Time Inflow(cfs) Inflow Stored Volume Stage Water Surface Outflow Outflow Outflow Outflow Outflow min (days) cfs (ccf) cuf In) Elevation cfs) (cfs) (cfs) (cfs (9D 0 00 000 000 0 000 4450 000 000 000 000 0 1 00 015 883 9 000 4450 001 000 000 001 0 2 00 059 3523 44 000 4450 001 000 000 001 1 3 00 131 7888 122 001 4451 002 000 000 002 1 4 00 232 13928 259 002 4452 003 000 000 003 2 5 00 360 21572 473 003 4453 004 000 000 004 3 6 00 5 12 30730 778 005 4455 005 000 000 005 3 7 00 688 41297 1188 007 4457 006 000 000 006 4 8 00 886 531 48 1715 0 10 4460 008 000 000 008 5 9 00 11 02 661 45 2372 0 13 4463 009 000 000 009 5 10 00 1336 801 37 3169 0 17 4467 0 10 000 000 0 10 6 11 00 1583 94960 4112 022 4472 0 11 000 000 0 11 7 12 00 1841 110441 5210 027 4477 012 000 000 012 7 13 00 21 07 126400 6467 032 4482 0 13 000 000 0 13 8 14 00 2377 142649 7885 039 4489 0 15 000 000 0 15 9 15 00 2650 159001 9466 045 4495 0 16 000 000 0 16 10 16 00 2921 175263 11209 053 4503 017 000 000 0 17 10 17 00 31 87 191245 13112 060 45 10 018 000 000 0 18 11 18 00 3446 206762 15168 069 45 19 020 000 000 020 12 19 00 3694 221632 17373 077 4527 021 000 000 021 12 20 00 3928 235682 19717 087 4537 022 000 000 022 13 21 00 4146 248747 22191 096 4546 023 000 000 023 14 22 00 4345 260675 24784 1 06 4556 024 000 000 024 15 23 00 4522 271327 27483 1 16 4566 025 000 000 025 15 24 00 4676 280578 30273 1 26 4576 027 000 000 027 16 25 00 4805 288321 33141 1 37 4587 028 000 000 028 17 26 00 4908 294465 36069 1 47 4597 029 000 000 029 17 27 00 4982 298938 39041 1 58 4608 030 079 000 1 08 65 28 00 5028 301688 41993 1 68 46 18 031 281 000 3 12 187 r' 29 00 5045 302684 44833 1 78 4628 032 540 000 572 343 30 00 5032 3019 12 47509 1 88 4638 032 829 000 861 517 31 00 4990 299384 49986 1 96 4646 033 11 28 000 11 61 697 32 00 49 19 2951 27 52241 204 4654 034 1424 000 1458 875 33 00 4820 2891 91 54258 2 11 4661 034 1707 000 1741 1045 34 00 4694 281647 56030 2 17 4667 035 1967 000 2002 1201 35 00 4543 272582 57554 222 4672 035 2200 000 2236 1341 36 00 4368 2621 01 58834 226 4676 036 2402 000 2438 1463 37 00 41 81 250863 59880 230 4680 036 2571 000 2607 1564 38 00 3998 239885 60715 2 33 4683 036 2708 000 2744 1646 39 00 3823 229388 61362 235 4685 036 28 16 000 2852 1711 40 00 3656 219349 61845 237 4687 036 2897 000 2933 1760 41 00 3496 209750 62182 238 4688 036 2954 000 2991 1794 42 00 3343 200571 62394 238 4688 036 2990 000 3027 1816 43 00 31 97 191794 62496 239 4689 036 3007 000 3044 1826 44 00 3057 183401 62503 239 4689 037 3009 000 3045 1827 45 00 2923 175375 62430 2 38 4688 036 2996 000 3033 1820 46 00 2795 167700 62287 2 38 4688 036 2972 000 3008 1805 47 00 2673 160362 62086 237 4687 036 2938 000 2974 1784 48 00 2556 153344 61835 236 4686 036 2895 000 2932 1759 49 00 2444 146633 61542 235 4685 036 2846 000 2882 1729 50 00 2337 1402 17 61215 234 4684 036 2791 000 2827 1696 51 00 2235 134080 60860 233 4683 036 2732 000 2768 1661 52 00 21 37 1282 13 60481 232 4682 036 2669 000 2705 1623 53 00 2043 122602 60084 231 4681 036 2604 000 2640 1584 54 00 1954 117237 59672 229 4679 036 2537 000 2573 1544 55 00 1868 1121 07 59250 228 4678 036 2469 000 2504 1503 56 00 1787 107201 58819 226 4676 036 2400 000 2435 1461 57 00 1708 102509 58383 225 4675 035 2330 000 2366 1419 58 00 1634 98023 57944 223 4673 035 2261 000 2296 1378 59 00 1562 93734 57503 222 4672 035 21 92 000 2228 1337 60 00 1494 89632 57063 220 4670 035 2124 000 21 59 1296 61 00 1428 85709 56624 219 4669 035 2057 000 2092 1255 62 00 1366 81959 56189 217 4667 035 1991 000 2026 1216 63 00 1306 78372 55757 216 4666 035 1926 000 1961 1177 64 00 1249 74942 55329 214 4664 035 1863 000 1898 1139 65 00 11 94 71663 54908 213 4663 034 1801 000 1835 1101 66 00 1142 68527 54492 212 4662 034 1740 000 1775 1065 67 00 1092 65528 54082 2 10 4660 034 1681 000 17 16 1029 68 00 1044 62660 53679 209 4659 034 1624 000 16 58 995 69 00 999 599 18 53283 207 4657 034 1568 000 1602 961 70 00 955 57296 52895 206 4656 034 15 14 000 1548 929 71 00 913 54789 52514 205 4655 034 1462 000 1495 897 72 01 873 52391 52141 204 4654 034 1411 000 1444 867 73 01 835 50098 51775 202 4652 034 1361 000 1395 837 74 01 798 47906 51417 201 4651 033 13 14 000 1347 808 75 01 763 458 10 51067 200 4650 033 1267 000 1301 780 76 01 730 43805 50725 1 99 4649 033 1223 000 1256 754 77 0 1 698 41888 50390 1 98 4648 033 11 79 000 1213 728 78 0 1 668 40055 50063 1 96 4646 033 11 38 000 11 71 703 79 0 1 638 38302 49743 1 95 4645 033 1097 000 11 30 678 80 0 1 6 10 36626 49431 1 94 4644 033 10 58 000 1091 655 81 0 1 584 35023 49127 1 93 4643 033 1021 000 1054 632 82 0 1 558 33490 48830 1 92 4642 033 985 000 1017 610 83 0 1 534 32025 48539 1 91 4641 033 9 50 000 982 589 84 0 1 5 10 30623 48256 1 90 4640 033 9 16 000 948 569 85 0 1 488 29283 47980 1 89 4639 032 883 000 916 549 86 0 1 467 28002 47711 1 88 4638 032 852 000 884 531 87 0 1 446 26776 47448 1 87 4637 032 822 000 854 512 88 0 1 427 25605 47191 1 86 4636 032 792 000 825 495 89 0 1 408 24484 46941 1 86 4636 0 32 764 000 796 478 90 0 1 390 234 13 46698 1 85 4635 032 737 000 769 462 91 0 1 373 223 88 46460 1 84 4634 032 7 11 000 743 446 92 0 1 357 21408 46228 1 83 4633 032 686 000 718 431 93 0 1 341 20472 46003 1 82 4632 032 661 000 693 416 94 0 1 326 19576 45782 1 82 4632 032 638 000 670 402 95 0 1 3 12 187 19 45568 1 81 4631 032 615 000 647 388 96 01 298 17900 45358 1 80 4630 032 594 000 625 375 97 0 1 285 171 17 45154 1 79 4629 032 573 000 604 363 98 0 1 273 16367 44955 1 79 4629 032 5 52 000 584 350 99 0 1 261 156 51 44762 1 78 4628 032 533 000 564 339 100 0 1 249 14966 44573 1 77 4627 0 31 514 000 546 327 101 0 1 239 143 11 44388 1 77 4627 031 496 000 527 316 102 0 1 228 13685 44209 1 76 4626 031 479 000 5 10 306 103 0 1 2 18 13086 44033 1 75 4625 031 462 000 493 296 104 0 1 209 125 14 43863 1 75 4625 031 446 000 477 286 105 0 1 1 99 11966 43696 1 74 4624 031 430 000 461 277 106 0 1 1 91 11442 43534 1 74 4624 031 4 15 000 446 268 -Y 1 107 0 1 1 82 10942 43376 1 73 4623 0 31 400 000 432 259 108 0 1 1 74 10463 43221 1 73 4623 031 386 000 4 18 251 109 0 1 1 67 10005 43071 1 72 4622 031 373 000 404 242 110 0 1 1 59 9567 42924 1 72 4622 0 31 360 000 391 235 111 0 1 1 52 91 48 42781 1 71 4621 0 31 347 000 378 227 112 0 1 1 46 8748 42642 1 71 4621 0 31 3 35 000 366 220 113 0 1 1 39 8365 42506 1 70 4620 031 324 000 355 213 114 0 1 1 33 7999 42373 1 70 4620 031 312 000 343 206 115 0 1 1 27 7649 42243 1 69 46 19 031 302 000 332 199 116 0 1 1 22 73 14 42117 1 69 46 19 031 291 000 322 193 117 0 1 1 17 6994 41994 1 68 46 18 031 281 000 312 187 118 0 1 1 11 6688 41874 1 68 46 18 031 271 000 302 181 119 0 1 1 07 6396 41756 1 67 46 17 031 262 000 293 176 120 0 1 1 02 61 16 41642 1 67 46 17 031 253 000 284 170 Total DA=1 4603451sf Imp SA=1 2870461sf Inflow Hydrograph Ccum= 064 Length W shed=l 6001feet (Using Malcolm Step Function) 1 =1 7 51m/hr Height W'shed=I 2lfeet A= 10 57 ac P(Prec Depth)'=1 4 91 in Time Flow (Q) (min) (cfs) 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 000 015 059 131 232 360 512 688 886 11 02 1336 1583 1841 21 07 2377 2650 2921 31 87 3446 3694 3928 4146 4345 4522 4676 4805 4908 4982 5028 5045 5032 4990 4919 4820 4694 4543 4368 41 81 3998 3823 3656 3496 3343 31 97 3057 2923 2795 Qpeak 50 4 cfs ip = 29 minutes S = 1 89 in Q.= 319 in Vol= 122 218 cf tc= 10 minutes 10 Year 6 hour Precip I 5l( Z 47 2673 48 2556 49 2444 50 2337 51 2235 52 21 37 53 2043 54 1954 55 1868 56 1787 57 1708 58 1634 59 1562 60 1494 61 1428 62 1366 63 1306 64 1249 65 1194 66 1142 67 1092 68 1044 69 999 70 955 71 913 72 873 73 835 74 798 75 763 76 730 77 698 78 668 79 638 80 610 81 584 82 558 83 534 84 510 85 488 86 467 87 446 88 427 89 408 90 390 91 373 92 357 93 341 94 326 95 312 96 298 97 285 98 273 99 261 100 249 101 239 102 228 103 218 6y,7" 104 209 105 1 99 106 1 91 107 1 82 108 1 74 109 1 67 110 1 59 111 1 52 112 146 113 1 39 114 1 33 115 1 27 116 1 22 117 1 17 118 1 11 119 1 07 120 1 02 7/1'L Accum Z Volume Staqe In S In Z Zest Comment 0 0 Contour at Normal Pond (wet pond) or Basin Bottom (infiltration) 233735 1 10 05936 0 1 005119 50629 2 10 83228 0693147 1 983487 806185 31 11 29748 1 098612 2986143 113408 4 11 63875 1 386294 403138 149063 5 5 11 91213 1 609438 5 127072 187651 5 6 12 14234 1 791759 6 277664 Contour at Berm Top 0 b = 1 137067 Ks = 2323819 Regression Analysis Y Data Range —I Regression Analysis X Data Range SUMMARY OUTPUT Regression Statistics Multiple R 0999918 R Square 0999836 Adjusted F 0999755 Standard E 0010706 Observatic 4 ANOVA F Regressooi 1 1401795 1 401794939 12229 53 8 18E-05 Residual 2 0 000229 0 000114624 Total 3 1 402024 Intercept 10 05355 0 009767 1029 34757 9 44E-07 10 01153 10 09558 10 01153 10 09558 X Variable 1 137067 0 010282 110 5872028 8 18E-05 1 092827 1 181307 1 092827 1 181307 Outlet Device 1 (Orifice) Diameter of Orifice in Cd= I 061 Cross Sectional Area = 0 049063 sf g = 32 2 fUsec2 Stage Head Q feet feet cfs 000 000 000 001 000 000 002 000 000 003 000 000 004 000 000 005 000 000 006 000 000 007 000 000 008 000 000 009 000 000 010 000 000 011 000 000 012 000 000 013 000 002 014 002 003 015 003 004 016 004 004 017 005 005 018 006 006 019 007 006 020 008 006 021 009 007 022 010 007 023 011 008 024 012 008 025 013 008 026 014 009 9/Iz Outlet Device 2 (Weir) Weir Length = 12 feet Cw= 1 31 Weir Elevations = I 461feet Stage Head O ffgetl feet cfs 000 -1 50 000 001 -1 49 000 002 -1 48 000 003 -1 47 000 004 -1 46 000 005 -1 45 000 006 -1 44 000 007 -1 43 000 008 -1 42 000 009 -1 41 000 010 -1 40 000 Oil -1 39 000 012 -1 38 000 013 -1 37 000 014 -1 36 000 015 -1 35 000 016 -1 34 000 017 -1 33 000 018 -1 32 000 019 -1 31 000 020 -1 30 000 021 -1 29 000 022 -1 28 000 023 -1 27 000 024 -1 26 000 025 -1 25 000 026 -1 24 000 027 -1 23 000 028 -1 22 000 029 -1 21 000 030 -1 20 000 031 -1 19 000 032 -1 18 000 033 -1 17 000 Use 3 33 for Sharp, 3,00 for Broad or Free 5000 - 1 11 w 3000 - 0 FL 2000 - 1000 1 11 1 11 21 31 41 51 61 71 81 91 101 111 121 Time (minutes) Inflow —Outflow A } _ Simplified Routing Procedure - 100 Year Storm = I 2 Crystal Coast Engineering, PA 205 3 Ward Road Project lFCW&P % 5 `;^y r�rEPz Swansboro INC 28584 Date 4/8/2014 l L ••••'•. NS^^: 910 325 0006 •,,,,,,� Ni I j I {' 17 Business License C 2553 Increment r— 1�minutes (Must be < 45 minutes) �I� Orifice Weir Pump Total Total Time Time Inflow(cfs) Inflow Stored Volume Stage Water Surface Outflow Outflow Outflow Outflow Outflow min da s cfs cf�f Sf im Elevation cfs) (cfs) (cfs) (cfs LC-q 0 00 000 000 0 000 4450 000 000 000 000 0 1 00 008 466 5 000 4450 001 000 000 001 0 2 00 031 1860 23 000 4450 001 000 000 001 1 3 00 070 41 77 64 001 4451 002 000 000 002 1 4 00 1 23 7405 137 001 4451 002 000 000 002 1 5 00 1 92 11528 251 002 4452 003 000 000 003 2 6 00 275 16526 414 003 4453 004 000 000 004 2 7 00 373 22375 635 004 4454 005 000 000 005 3 8 00 484 29047 923 006 4456 006 000 000 006 3 9 00 608 36509 1285 008 4458 007 000 000 007 4 10 00 745 44725 1728 0 10 4460 008 000 000 008 5 11 00 894 53654 2260 0 13 4463 008 000 000 008 5 12 00 1054 63255 2887 0 16 4466 009 000 000 009 6 13 00 1225 73479 3617 0 19 4469 0 10 000 000 0 10 6 14 00 1405 84278 4453 023 4473 0 11 000 000 0 11 7 15 00 1593 95598 5402 028 4478 0 12 000 000 0 12 7 16 00 1790 107385 6469 032 4482 013 000 000 0 13 8 17 00 1993 119582 7656 038 4488 0 14 000 000 0 14 9 18 00 2202 1321 30 8969 043 4493 016 000 000 0 16 9 19 00 24 16 144966 10409 049 4499 017 000 000 0 17 10 20 00 2634 158030 11980 056 4506 018 000 000 0 18 11 21 00 2854 171257 13682 063 45 13 019 000 000 019 11 22 00 3076 184584 15516 070 4520 020 000 000 020 12 23 00 3299 197945 17484 078 4528 021 000 000 021 13 24 00 3521 211275 19584 086 4536 022 000 000 022 13 25 00 3742 224511 21816 095 4545 023 000 000 023 14 26 00 3960 237588 24178 1 04 4554 024 000 000 024 14 27 00 41 74 250441 26668 1 13 4563 025 000 000 025 15 28 00 4383 263009 29283 1 23 4573 026 000 000 026 16 /,7 29 00 4587 275231 32020 1 33 4583 027 000 000 027 16 30 00 4784 287047 34874 1 43 4593 028 000 000 028 17 31 00 4973 298399 37841 1 54 4604 029 024 000 053 32 32 00 51 54 309234 40901 1 64 4614 030 1 97 000 227 136 33 00 5325 319497 43960 1 75 4625 031 455 000 486 292 34 00 5486 3291 40 46960 1 86 4636 032 766 000 798 479 35 00 5635 3381 15 49862 1 96 4646 033 11 12 000 11 45 687 36 00 5773 346379 52638 205 4655 034 1479 000 15 12 907 37 00 5898 353891 55270 2 14 4664 035 1854 000 1889 1133 38 00 60 10 3606 16 57743 223 4673 035 2230 000 2265 1359 39 00 61 09 366520 60049 2 30 4680 036 2598 000 2634 1581 40 00 61 93 371575 62184 238 4688 036 2954 000 2991 1794 41 00 6263 375756 64147 244 4694 037 3294 000 33 30 1998 42 00 63 17 379043 65939 250 4700 037 36 13 000 3650 2190 43 00 6357 381420 67564 256 4706 038 3909 000 3947 2368 44 00 6381 382875 69024 260 4710 038 41 82 000 4220 2532 45 00 6390 383402 70326 265 4715 038 4429 000 4467 2680 46 00 6383 382997 71476 269 4719 039 4651 000 4690 2814 47 00 6361 381663 72479 272 4722 039 4847 000 4886 2932 48 00 6323 379407 73341 275 4725 039 50 18 000 50 57 3034 49 00 6271 376238 74070 277 4727 039 51 63 000 5202 3121 50 00 6203 3721 73 74670 279 4729 039 5284 000 5323 3194 51 00 61 21 367232 75148 281 4731 040 5380 000 5420 3252 52 00 6024 361437 75511 282 4732 040 5454 000 5494 3296 53 00 59 14 3548 19 75763 283 4733 040 5505 000 5545 3327 54 00 5790 347408 75910 283 4733 040 5535 000 5575 3345 55 00 5654 339240 75957 283 4733 040 5545 000 5585 3351 56 00 5506 330356 75910 283 4733 040 5535 000 5575 3345 57 00 5353 3211 88 75776 283 4733 040 5508 000 5548 3329 58 00 5201 312052 75568 282 4732 040 5466 000 5505 3303 59 00 5053 3031 75 75297 281 4731 040 54 11 000 5450 3270 60 00 4909 294551 74972 280 4730 040 5345 000 5384 3231 61 00 4770 2861 72 74603 279 4729 039 5270 000 5310 3186 62 00 4634 278032 74198 278 4728 039 51 89 000 5228 3137 63 00 4502 2701 23 73762 276 4726 039 51 01 000 51 41 3084 64 00 4374 262439 73302 275 4725 039 5010 000 5049 3029 65 00 4250 254974 72823 273 4723 0 39 4915 000 4954 2972 66 00 41 29 247721 72327 271 4721 0 39 4817 000 4856 2914 67 00 40 11 240674 71820 270 4720 0 39 47 18 000 4757 2854 ,3; 68 00 3897 233828 71305 268 47 18 039 46 18 000 4656 2794 69 00 37 86 2271 76 70783 266 47 16 039 45 17 000 4555 2733 70 00 3679 2207 14 70257 265 47 15 038 44 16 000 4454 2672 71 00 3574 214435 69729 263 47 13 038 43 15 000 4353 2612 72 01 3472 208336 69200 261 47 11 038 4215 000 4253 2552 73 01 3373 202409 68672 259 4709 038 41 15 000 41 53 2492 74 01 3278 196652 68147 258 4708 038 40 17 000 4055 2433 75 01 31 84 191058 67624 256 4706 038 3920 000 3958 2375 76 01 3094 185623 67106 254 4704 038 3825 000 3862 2317 77 01 3006 180343 66592 252 4702 038 3731 000 3768 2261 78 01 2920 175212 66083 251 4701 037 3638 000 3676 2206 79 01 2837 170228 65580 249 4699 037 3548 000 3585 2151 80 01 2756 165386 65082 247 4697 037 3459 000 3496 2098 81 01 2678 160681 64592 246 4696 037 3372 000 3409 2045 82 01 2602 1561 11 64107 244 4694 037 3287 000 3323 1994 83 01 2528 151670 63630 243 4693 037 3203 000 3240 1944 84 01 2456 147356 63160 241 4691 037 31 22 000 31 58 1895 85 01 2386 143164 62696 239 4689 037 3042 000 3078 1847 86 01 2318 139091 62240 238 4688 036 2964 000 3000 1800 87 01 2252 1351 35 61791 236 4686 036 2888 000 2924 1755 88 01 21 88 131291 61350 235 4685 036 2814 000 2850 1710 89 0 1 21 26 127556 60915 233 4683 036 2741 000 2777 1666 90 0 1 2065 123928 60488 232 4682 036 2671 000 2706 1624 91 01 2007 120402 60068 231 4681 036 2602 000 2637 1582 92 01 19 50 116977 59656 229 4679 036 2534 000 2570 1542 93 0 1 1894 113650 59250 228 4678 036 2469 000 2504 1503 94 01 1840 110417 58852 226 4676 036 2405 000 2440 1464 95 0 1 1788 107276 58460 225 4675 035 2343 000 2378 1427 96 0 1 1737 104224 58076 224 4674 035 2282 000 2317 1390 97 0 1 1688 101260 57698 223 4673 035 2223 000 2258 1355 98 0 1 1640 98379 57327 221 4671 035 21 65 000 2200 1320 99 0 1 1593 95581 56963 220 4670 035 21 09 000 21 44 1286 100 0 1 1548 92862 56605 2 19 4669 035 2054 000 2089 1254 101 01 1504 90220 56253 2 18 4668 035 2001 000 2036 1222 102 0 1 1461 87654 55908 2 16 4666 035 1949 000 1984 1190 103 0 1 14 19 851 60 55570 2 15 4665 035 1899 000 1933 1160 104 0 1 1379 82738 55237 2 14 4664 035 1849 000 1884 1130 105 0 1 1340 80384 54911 2 13 4663 034 1801 000 1836 1102 106 0 1 1302 78098 54590 2 12 4662 034 1755 000 1789 1073 107 01 1265 75876 54275 211 4661 034 1709 000 1744 1046 108 0 1 1229 73718 53967 210 4660 034 1665 000 1699 1019 109 0 1 11 94 71621 53663 209 4659 034 1622 000 1656 994 110 0 1 11 60 69583 53366 208 4658 034 1580 000 1614 968 111 0 1 11 27 67604 53073 207 4657 034 1539 000 1573 944 112 0 1 1095 65681 52786 206 4656 034 1499 000 1533 920 113 0 1 1064 63813 52505 205 4655 034 1460 000 1494 896 114 0 1 1033 61997 52228 204 4654 034 1423 000 1456 874 115 0 1 1004 60234 51957 203 4653 034 1386 000 14 19 852 116 0 1 975 58520 51690 202 4652 034 1350 000 1384 830 117 0 1 948 56856 51429 201 4651 034 13 15 000 1349 809 118 0 1 921 55238 51172 200 4650 033 1281 000 1315 789 119 0 1 894 53667 50920 1 99 4649 033 1248 000 1281 769 120 0 1 869 521 41 50673 1 98 4648 033 12 16 000 1249 750 Total DA=1 460 3451 sf Imp SA =1 287 0461 sf Inflow Hydrograph Ccum= 064 Length W shed=l 6001feet (Using Malcolm Step Function) 1 =1 9 51m/hr Height W shed=l 21feet A= 10 57 ac P(Prec Depth)'=j 8 16) in Time Flow (Q) (min) (cfs) 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 000 008 031 070 1 23 1 92 275 373 484 608 745 894 1054 1225 1405 1593 1790 1993 2202 2416 2634 2854 3076 3299 3521 3742 3960 41 74 4383 4587 4784 4973 51 54 5325 5486 5635 5773 5898 6010 61 09 61 93 6263 6317 6357 6381 6390 6383 Qpeak 63 9 cfs tp = 45 minutes S = 1 89 in Q.= 6 26 in Vol= 240 047 cf tc= 10 minutes 10 Year 6 hour Precip I 47 6361 48 6323 49 6271 50 6203 51 61 21 52 6024 53 5914 54 5790 55 5654 56 5506 57 5353 58 5201 59 5053 60 4909 61 4770 62 4634 63 4502 64 4374 65 4250 66 41 29 67 4011 68 3897 69 3786 70 3679 71 3574 72 3472 73 3373 74 3278 75 31 84 76 3094 77 3006 78 2920 79 2837 80 2756 81 2678 82 2602 83 2528 84 2456 85 2386 86 2318 87 2252 88 21 88 89 21 26 90 2065 91 2007 92 1950 93 1894 94 1840 95 1788 96 1737 97 1688 98 1640 99 1593 100 1548 101 1504 102 1461 103 1419 y2 104 1379 105 1340 106 1302 107 1265 108 1229 109 11 94 110 11 60 111 11 27 112 1095 113 1064 114 1033 115 1004 116 975 117 948 118 921 119 894 120 869 7/,L Accum Z Volume Staae In S In Z Zest Comment 0 0 Contour at Normal Pond (wet pond) or Basin Bottom (infiltration) 233735 1 1005936 0 1 005119 50629 2 1083228 0693147 1 983487 806185 3 11 29748 1 098612 2986143 113408 4 11 63875 1 386294 403138 149063 5 5 11 91213 1 609438 5127072 187651 5 6 1214234 1 791759 6 277664 Contour at Berm Top b = 1 137067 Ks = 2323819 Regression Analysis Y Data Range ! _--]Regression Analysis X Data Range SUMMARY OUTPUT Regression Statistics Multiple R 0999918 R Square 0999836 Adjusted F 0999755 Standard E 0010706 Observahc 4 Regressioi 1 1 401795 1 401794939 12229 53 8 18E-05 Residual 2 0 000229 0 000114624 Total 3 1402024 X Variable 1 137067 0 010282 110 5872028 8 18E-05 1 092827 1 181307 1 092827 1 181307 �a Outlet Device 1 (Orifice) Diameter of Orifice = (------- 3j in Cd = 1 061 Cross Sectional Area = 0 049063 sf g = 32 2 fUsec2 Stage Head Q feet feet cfs 000 000 000 001 000 000 002 000 000 003 000 000 004 000 000 005 000 000 006 000 000 007 000 000 008 000 000 009 000 000 010 000 000 011 000 000 012 000 000 013 000 002 014 002 003 015 003 004 016 004 004 0 17 005 005 018 006 006 019 007 006 020 008 006 021 009 007 022 010 007 023 011 008 024 012 008 025 013 008 026 014 009 Outlet Device 2 (Weir) Weir Length = 12 feet Cw= 31 Weir Elevations = 46ifeet Stage Head Q feet Jfggen cfs 000 -1 50 000 001 -1 49 000 002 -1 48 000 003 -1 47 000 004 -1 46 000 005 -1 45 000 006 -1 44 000 007 -1 43 000 008 -1 42 000 009 -1 41 000 010 -1 40 000 Oil -1 39 000 012 -1 38 000 013 -1 37 000 014 -1 36 000 015 -1 35 000 016 -1 34 000 017 -1 33 000 018 -1 32 000 019 -1 31 000 020 -1 30 000 021 -1 29 000 022 -1 28 000 023 -1 27 000 024 -1 26 000 025 -1 25 000 026 -1 24 000 027 -1 23 000 028 -1 22 000 029 -1 21 000 030 -1 20 000 031 -1 19 000 032 -1 18 000 033 -1 17 000 Use 3 33 for Sharp, 3,00 for Broad or Free 7000 - 60 00 5000 - ,M 4000 - -- —inflow 3 Outflow EL- 3000 -- 2000 - 1000 000 1 11 21 31 41 51 61 71 81 91 101 111 121 Time (minutes) �N Stormwater Treatment Narrative FCW&P Properties, LLC FCW & P Properties, LLC owns a undeveloped 7 63 acre tract that includes an existing stormwater wetland, that wetland sized and permitted to accommodate several existing adjacent tracts Those adjacent tracts include several existing uses, including a portion of a CVS drug store (SW8 070804 Mod), a "Jones Car Wash" (SW8 110713 ), and one additional undeveloped tract The original permit for the stormwater wetland was issued on 8/18/11 (SW8-110712) FCW& P Properties, Inc now desires to abandon the stormwater wetland and construct, in its place, a Wet Pond, that Wet Pond sized as to accommodate ALL existing tributary BUA, as well as additional BUA associated with new proposed development on the remaining FCW&P tract The new Wet Pond wills serve a total drainage area of 460,345 sf (10 57 Ac) The project site is located in the White Oak River basin The tract is currently cleared with most runoff draining to adjacent ditches and wetland basins From there the flow runs into a nearby unnamed tributary of New River (C, NSW) The site is relatively flat (0 6%-1 5% slopes) The proposed development activities are high density (percent impervious > 24%), therefore, stormwater treatment facilities are required The attached Stormwater Plan includes a wet detention basin located within the designed Stormwater lot at the eastern section of the site This pond has been designed to meet the Coastal Rules, and according to current BMP Manual Specifications The stormwater pond has been designed with a connected forebay and main pond Runoff generated from impervious surfaces on and off site will be diverted to the forebay via inlets and underground storm dram pipes Treated Stormwater will exit the main pond via an new outlet structure and new 36" outlet pipe and into the nearby drainage ditch across the Southern side of the Western Blvd )0" W 077° 27' 00.00" VV 077- 2630.00" W 077- 26' 00.00" W 077° 25' 30.00" W 077- EE r n a+ S 1 n Propert es,1 �i LLC � Il c Z + ylvan- h o x.�4 J•l,`.'. $jr - anclni o att � l 5 ntf _ b INI '-!Mon II tll2 n am _ o )T W 077" 27' 00.00" W 077" 26' 30.00" W 077' 26 00.00" W 077' 25' 30.00" W 077" SCALE124000 0 1000 2000 3000 4000 5000 6000 No FEET