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HomeMy WebLinkAboutSW8000323_CURRENT PERMIT_20000426STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO. SW eU`(X75oZ3- DOC TYPE M CURRENT PERMIT ❑ APPROVED PLANS ❑ HISTORICAL FILE ❑ COMPLIANCE EVALUATION INSPECTION DOC DATE ,?:FJ711�D�i YYYYMMDD State of North Carolina Department of Environment and Natural Resources Wilmington Regional Office James B. Hunt, Jr., Governor Bill Holman, Secretary Division of Water Quality April 26, 2000 Mr Edward Gore, Jr , President Mannon Holdings, LLC PO Box 7452 Shallotte, NC 28470 A&41� NCDENR NORTH CAROLINA DEPARTMENT OR ENVIRONMENT AND NATURAL RESOURCES Subject Permit No SW8 000323 Edward Gore, Mannon Holdings, LLC High Density Stormwater Project Brunswick County Dear Mr Gore The Wilmington Regional Office received a complete Stormwater Management Permit Application for Edward Gore, Mannon Holdings, LLC on March 20, 2000 Staff review of the plans and specifications has determined that the project, as proposed, will comply with the Stormwater Regulations set forth in Title 15A NCAC 2H 1000 We are forwarding Permit No SW8 000323 dated April 26, 2000, for the construction of Edward Gore, Mannon Holdings, LLC This permit shall be effective from the date of issuance until April 26, 2010, and shall be subject to the conditions and limitations as specified therein Please pay special attention to the Operation and Maintenance requirements in this permit Failure to establish an adequate system for operation and maintenance of the stormwater management system will result in future compliance problems If any parts, requirements, or limitations contained in this permit are unacceptable, you have the right to request an adj udicatory hearing upon written request within thirty (30) days following receipt of this permit This request must be in the form of a written petition, conforming to Chapter 150B of the North Carolina General Statutes, and filed with the Office of Administrative Hearings, P O Drawer 27447, Raleigh, NC 27611-7447 Unless such demands are made this permit shall be final and binding If you have any questions, or need additional information concerning this matter, please contact Scott Vinson, or me at (910) 395-3900 Sincerely, r Rick'Shiver Water Quality Regional Supervisor RSS/sav S 1WQSISTORMWATIPERMIT1000323 APR cc Don Covil, P E Delaney Aycock, Brunswick County Inspections Scott Vinson Wilmington Regional Office Central Files 127 Cardinal Dr Ext , Wilmington, North Carolina 28405 'Telephone 910-395-3900 FAX 910-350-2004 An Equal Opportunity Affirmative Action Employer 50% recycled/10% post -consumer paper State Stormwater Management Systems Permit No SWS 000323 STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF WATER QUALITY STATE STORMWATER MANAGEMENT PERMIT HIGH DENSITY DEVELOPMENT In accordance with the provisions of Article 21 of Chapter 143, General Statutes of North. Carolina as amended, and other applicable Laws, Rules, and Regulations PERMISSION IS HEREBY GRANTED TO Mannon Holdings, LLC Edward Gore, Mannon Holdings, LLC Brunswick County FOR THE construction, operation and maintenance of a wet detention pond in compliance with the provisions of 15A NCAC 2H 1000 (hereafter referred to as the "stormwater rules') and the approved stormwater management plans and specifications and other supporting data as attached and on file with and approved by the Division of Water Quality and considered a part of this permit This permit shall be effective from the date of issuance until April 26, 2010 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 on page 3 of this permit, the Project Data Sheet The stormwater control has been designed to handle the runoff from 32,624 square feet of impervious area 3 Approved plans and specifications for this project are incorporated by reference and are enforceable parts of the permit 4 The tract will be limited to the amount of built -upon area indicated on page 3 of this permit, and per approved plans 2 State Stormwater Management Systems Permit No SW8 000323 Project Name Permit Number Location Applicant Marling Address Application Date Name of Receiving Stream/Index # Classification of Water Body If Class SA, chloride sampling resul Pond Depth, feet Permanent Pool Elevation, FMSL Total Impervious Surfaces, ft2 Building, ft2 Parking, Drive, Walks, ft2 Offsite Area entering Pond, ft2 Required Surface Area, ft2 Provided Surface Area, ft2 Required Storage Volume, ft' Provided Storage Volume, ftz Temporary Storage Elevation, FMS Controlling Orifice DIVISION OF WATER QUALITY PROJECT DESIGN DATA SHEET Edward Gore, Mannon Holdings, LLC SW8 000323 Brunswick County Mr Edward Gore, Jr , President Mannon Holdings, LLC PO Box 7452 Shallotte, NC 28470 March 20, 2000 Shallotte River / LBR59 15-25-2-(7 5) "SC HQW" is n/a 600 1000 32,624 10,800 21,824 none, per Engineer 1,845 2,000 2,630 2,820 L 1120 0 8125"(� pipe 3 State Stormwater Management Systems Permit No SWS 000323 II. SCHEDULE OF COMPLIANCE The stormwater management system shall be constructed in it's entirety, vegetated and operational for its intended use prior to the construction of any built -upon surface except roads 2 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 tunes provide the operation and maintenance necessary to assure the permitted stormwater system functions at optimum efficiency The approved Operation and Maintenance Plan must be followed in its entirety and maintenance must occur at the scheduled intervals including, but not limited to a Semiannual scheduled inspections (every 6 months) b Sediment removal c Mowing and revegetation of side slopes d Immediate repair of eroded areas e Maintenance of side slopes in accordance with approved plans and specifications f Debris removal and unclogging of outlet structure, onfice device and catch basins and piping g Access to the outlet structure must be available at all times 4 Records of maintenance activities must be kept and made available upon request to authorized personnel of D WQ The records will indicate the date, activity, name of person performing the work and what actions were taken 5 Decorative spray fountains will not be allowed in the stormwater treatment system 6 The facilities shall be constructed as shown on the approved plans This permit shall become voidable unless the facilities are constructed in accordance with the conditions of this permit, the approved plans and specifications, and other supporting data 7 Upon completion of construction, prior to issuance of 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 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 The following items will require a modification to the permit a Any revision to the approved plans, regardless of size b Project name change c Transfer of ownership d Redesign or addition to the approved amount of built -upon area e Further subdivision of the project area f Filling in, altering, or piping of any vegetative conveyance shown on the approved plan 10 The Director may determine that other revisions to the project should require a modification to the permit 11 A copy of the approved plans and specifications shall be maintained on file by the Permittee for a mimmum of ten years from the date of the completion of construction 4 State Stormwater Management Systems Permit No SW8 000323 12 Prior to the sale of any portion of the property, an access/maintenance easement to the stormwater facilities shall be granted in favor of the permittee if access to the stormwater facilities will be restricted by the sale of any portion of the property 13 The permittee is responsible for verifying that the proposed built -upon area does not exceed the allowable built -upon area 14 The runoff from all built -upon area on the project must be directed into the permitted stormwater control system 15 The Director may notify the permittee when the permitted site does not meet one or more of the minimum requirements of the permit Within the time frame specified in the notice, the permittee shall submit a written time schedule to the Director for modifying the site to meet minimum requirements The permittee shall provide copies of revised plans and certification in writing to the Director that the changes have been made III. GENERAL CONDITIONS This permit is not transferable In the event there is a desire for the facilities to change ownership, or there is a name change of the Permittee, a formal permit request must be submitted to the Division of Water Quality accompanied by an application fee, documentation from the parties involved, and other supporting materials as may be appropriate The approval of this request will be considered on its merits and may or may not be approved 2 Failure to abide by the conditions and limitations contained in this permit may subject the Permittee to enforcement action by the Division of Water Quality, in accordance with North Carolina General Statute 143-215 6A to 143-215 6C 3 The issuance of this permit does not preclude the Permittee from complying with any and all statutes, rules, regulations, or ordinances which may be imposed by other government agencies (local, state, and federal) which have jurisdiction 4 In the event that the facilities fail to perform satisfactorily, including the creation of nuisance conditions, the Permittee shall take immediate corrective action, including those as may be required by this Division, such as the construction of additional or replacement stormwater management systems 5 The permittee grants DENR Staff permission to enter the property for the purpose of inspecting all components of the permitted stormwater management facility 6 The permit may be modified, revoked and reissued or terminated for cause The filing of a request for a permit modification, revocation and reissuance or termination does not stay any permit condition Permit issued this the 26th day of April, 2000 NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION Kerr T Stevens, Director Division of Water Quality By Authority of the Environmental Management Commission Permit Number SW8 000323 5 State Stormwater Management Systems Permit No SW8 000323 Edward Gore, Mannon Holdings, LLC Stormwater Permit No SW8 000323 Brunswick County Designer's Certifieation I, , as a duly registered in the State of North Carolina, having been authorized to observe (periodically/weekly/full time) the construction of the project, (Project) for (Project Owner) hereby state that, to the best of my abilities, due care and diligence was used in the observation of the project construction such that the construction was observed to be built within substantial compliance and intent of the approved plans and specifications The checklist of items on page 2 of this form is included in the Certification Noted deviations from approved plans and specification Signature Registration Number Date SEAL 0 State Stormwater Management Systems Permit No SW8 000323 Certification Requirements 1 The drainage area to the system contains approximately the permitted acreage 2 The drainage area to the system contains no more than the permitted amount of built -upon area 3 All the built -upon area associated with the project is graded such that the runoff drains to the system 4 The outlet/bypass structure elevations are per the approved plan 5 The outlet structure is located per the approved plans 6 Trash rack is provided on the outlet/bypass structure 7 All slopes are grassed with permanent vegetation 8 Vegetated slopes are no steeper than 3 1 9 The inlets are located per the approved plans and do not cause short-circuiting of the system 10 The permitted amounts of surface area and/or volume have been provided 11 Required drawdown devices are correctly sized per the approved plans 12 All required design depths are provided 13 All required parts of the system are provided, such as a vegetated shelf, and a forebay 14 The overall dimensions of the system, as shown on the approved plans, are provided cc NCDENR-DWQ Regional Office Delaney Aycock, Brunswick County Building Inspector 7 OFFICE USE ONLY Date Received Fee Paid Pernut Number v� n 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 onginal I. GENERAL INFORMATION 1 Applicants name (specify the name of the corporation, individual, etc who owns the project) T 2 Print Owner/Signing Official's name and title (person legally responsible for facility and compliance) Edward Gore, Jr. 3 Mailing Address for person listed in item 2 above Mannongoldings, L. L. C., Post Office Box 74.52 City Shallotte State Nr. _ Zap 2Aa7n_ 7452 ^~ Telephone Number ( 910. i 575-7070 4. Project Name (subdivision, facility, or establishment name - should be consistent with project name on plans, specifications, letters, operation and maintenance agreements, etcEdward Gorp- ) Manl}On uoId�=ssr-t+. :..-r' 5 Location of Project (street address) NC179 City _ Shallotte- County' Brunswick 6 Directions to project (from nearest major intersection) From intersection of SR1173 gW SR1191, travel north on SR1 1 7 A approX] Mate1 y 150'. Pro3ect is on ri ht. 7 Latitude 3305810511 N Longitude 78o23,1 g,, W I of project 8 Contact person who can answer questions about the project Name Edward Gore Jr Telephone Number 910 575-7070 II. PERMIT INFORMATION. 1 Specify whether project is (check one) X New Renewal Modification Form swU-101 Version 3 99 Page I of 4 ORIGINA f 1 it ttuis appucation is oeing suornittea as cne rerun ur a reimwai or aiuuuic.auun w art existing pernuz, ua[ cne existing permit number N./am_ and its issue date (if Down) 3 Specify the type of project (check one) Low Density X High Density Redevelop General Permit Other 4 Additional Project Requirements (check applicable blanks) --CAMA Major X Sedimentation/Erosion Control X 404/401 Permit _NPDES Stormwater Information on required state permits can be obtained by contacting the Customer Service Center at 1-877-623-6748 III. PROJECT INFORMATION 1 In the space provided below, summanze how stormwater will be treated Also attach a detailed narrative (one to two pages) descnbing stormwater management for the project Storiwater Detention Pond._ See_ "Erosion Control and Stormwater Man4swent Narrative," on plans. 2 Stormwater runoff from this project drains to the Shallotte River basin. 3 Total Project Area 12 4- acres 5 How many drainage areas does the project have? 1 4 Project Built Upon Area 60. % 6 Complete the following information for each drainage area. If there are more than two drainage areas in the project, attach an additional sheet with the information for each area provided in the same format as below a • .tou x• � � .asa :: +d m ➢ u ; AlQyraytrysfi,a ,roail".."QK` dsebw � k SWe., Receiving Stream Name Shallotte River Receiving Stream Class SC HQW Drainage Area 1.01 ac . Existsn envious* Area -0- Pro osed Im ervious'Area 0.749 ac . % Impervious* Area (total) 73.0 On -site Buildings On -site Streets On -site Parking Drives On -site Sidewalks Other on -site Off -site 14 �y Tom 0.749 ac • r. lmpervwus area is defused as the built upon area including, but not Iimited to, buildings, raids, parkmg areas, sidewalks, gravel areas, etc. Form XW- Ila Mod 99Page Z of 4 7 How was the off -site unpervious area listed above derived" NSA 61 IV DEED RESTRICTIONS AND PROTECTIVE COVENANTS The following italicized deed restrictions and protective covenants are required to be recorded for all subdivisions, outparcels and future development prior to the sale of any lot LE lot sizes vary significantly, a table listing each lot number, size and the allowable built -upon area for each lot must be provided as an attachment 1. The following covenants are intended to ensure ongoing compliance with state stormwater management permit number as issued by the Division of Water Quality. These covenants may not be changed or deleted without the consent of the State 2. No more than square feet of any lot shall be covered by structures or impervious materials Impervious materials include asphalt, gravel, concrete, brick, stone, slate or similar material but do not include wood decking or the water surface of swimming pools 3 Swales shall not be filled in, piped, or altered except as necessary to provide driveway crossings 4 Built -upon area in excess of the permitted amount requires a state stormwater management permit modification prior to construction 5 All permitted runoff from outparcels or future development shall be directed into the permitted stormwater control system These connections to the stormwater control system shall be performed in a manner that maintains the integrity and performance of the system as permitted By your signature below, you certify that the recorded deed restrictions and protective covenants for this project shall include all the applicable items required above, that the covenants will be binding on all parties and persons claiming under them, that they will run with the land, that the required covenants cannot be changed or deleted without concurrence from the State, and that they will be recorded prior to the sale of any lot V. SUPPLEMENT FORMS The applicable state stormwater management permit supplement form(s) listed below must be submitted for each BMP specified for this protect. Contact the Stormwater and General Permits Unit at (919) 733-5083 for the status and availability of these forms Form SWU-102 Wet Detention Basin Supplement Form SWU-103 infiltration Basin Supplement Form SWU-104 Low Density Supplement Form SWU-105 Curb Outlet System Supplement Form SWU-106 Off -Site System Supplement Form SWU-107 Underground Infiltration Trench Supplement Form SWU-108 Neuse River Basin Supplement Form SWU-109 Innovative Best Management Practice Supplement Form SWU-101 Version 3 99 Page 3 of 4 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. The complete application package should be submitted to the appropriate DWQ Regional Office. I Please indicate that you have provided the following required information by initialing in the space provided next to each item • Original and one copy of the Stormwater Management Permit Application Form • One copy of the applicable Supplement Form(s) for each BMP • Permit application processing fee of $420 (payable to NCDENR) • Detailed narrative description of stormwater treatment/management • Two copies of plans and specihcations, including - Development/Project name - Engineer and firm - Legend - North arrow - Scale - Revision number & date - Mean high water line - Dimensioned property/project boundary - Location map with named streets or NCSR numbers - Ongunal contours, proposed contours, spot elevations, finished floor elevations - Details of roads, drainage features, collection systems, and stormwater control measures - Wetlands delineated, or a note on plans that none exist - Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations - Drainage areas delineated - Vegetated buffers (where required) VEL AGENT AUTHORIZATION If you wish to designate authority to another individual or firm so that they may provide information on your behalf, please complete this section Designated agent (individual or hum) East Coast Engineering Company, PA Mailing Address _. PoSt Q_ffir_e Box_246() City- Shallotte State Zip 28459 Phone („ _qj_ � 754-8029 _ _ Fax. { 910 } .754--8049 VUL APPLICANT'S CERTIFICATION I, (print or type name of person Iisted in General Information, item 2) Edward Core, Jr. 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 15A NCAC 2H 1000 Signature Date 3--) (4- ':Pd6 o Form SWU-101 Version 3 99 Page 4 of 4 Permit Na (to be provided by DWQ) State of North Carolina Department of Environment and Natural Resources Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM WET DETENTION BASIN SUPPLEMENT This form may be photocopied for use as an original DWQ Stormwater Management Plan Review A complete stormwater management plan submittal includes an application form, a wet detention basin supplement for each basin, design calculations, and plans and specifications showing all basin and outlet structure details I. PROJECT INFORMATION Project Name Edward Gore, Mannon. Holdincya, I,, L__ S',_ Contact Person Edward Gore, Jr. Phone Number (91 o) 57s_m7o For projects with multiple basins, specify which basin this worksheet applies to N/A elevations Basin Bottom Elevation 4.0 ft Permanent Pool Elevation 10.0 ft Temporary Pool Elevation ft areas Permanent Pool Surface Area 2, 000 sq ft. Drainage Area 1.007 ac Impervious Area volumes Permanent Pool Volume Temporary Pool Volume Forebay Volume Other parameters SA/DA I Diameter of Onfice 'Design Rainfall Design TSS Removal 2 Form SWU-102 Rev 3 99 0.749 ac (floor of the basin) (elevation of the orifice) (elevation of the discharge structure overflow) (water surface area at the onfice elevation) (on -site and off -site drainage to the basin) (on -site and off -site drainage to the basin) 3,706 cu. ft (combined volume of main basin and forebay) 2, 8 0 cu ft (volume detained above the permanent pool) ,. 756 cu. ft (approximately 20% of total volume) 0.0411 (surface area to drainage area ratio from DWQ table) 13 / 1 fi_ in (2 to S day temporary pool draw -down required) 1 (] in 90 % (minimum $S%a required) Page I of 4 ORIGINAL Footnotes_ i When using the Division SAIDA tables, the correct SAIDA ratio for permanent pool sizing should be computed based upon the actual impervious % and permanent pool depth Linear interpolation should be employed to determine the correct value for non- standard table entries 2 In the 20 coastal counties the requirement for a vegetative filter may be waived if the wet detention basin is designed to provide 90% TSS removal The NCDENR BMP manual provides design tables for both 85% TSS removal and 90% TSS removal II. REQUIRED ITENIS CHECKLIST The following checklist outlines design requirements per the Stormwater Best Management Practices Manual (N C Department of Environment, Health and Natural Resources, February 1999) and Administrative Code Section 15 A NCAC 2H 1008 Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached If the applicant has designated an agent in the Stormwater Management Permit Application Form, the agent may initial below If a requirement has not been met, attach justification. Applicants Initials a. The permanent pool depth is between 3 and 6 feet (required minimum of 3 feet) b The forebay volume is approximately equal to 20% of the basin volume c The temporary pool controls runoff from the design storm event d The temporary pool draws down in 2 to 5 days e If required, a 30-foot vegetative filter is provided at the outlet (include non -erosive flow calculations) f The basin length to width ratio is greater than 3-1 �, z :2 - 5: 1 g The basin side slopes above the permanent pool are no steeper than 3 1 h A submerged and vegetated perimeter shelf with a slope of 6 1 or less (show detail) Vegetative cover above the permanent pool elEvation is specified A trash rack or similar device is provided for both the overflow and onfice k A recorded drainage easement is provided for each basin including access to nearest right- of-way 1 If the basin is used for sediment and erosion control during construction, clean out of the basin is specified prior to use as a wet detention basin m. A mechanism is specified which will drain the basin for maintenance or an emergency C?, —e IIL WET DETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT The wet detention basin system is defined as the wet detention basin, pretreatment including forebays and the ,V egetated filter if one is provided This system (check one) 0 does This system (check one) 0 does Form SWU-102 Rev 3 99 JAVI@19,0 Wdoes not incorporate a vegetated filter at the outlet. 9/does not incorporate pretreatment other than a forebay. Pape 2 of 4 Maintenance activities shall be performed as follows It 1 After every significant runoff producing rainfall event and at least monthly a inspect the wet detention basin system for sediment accumulation, erosion, trash accumulation, vegetated cover, and general condition b Check and clear the onf ce of any obstructions such that drawdown of the temporary pool occurs within 2 to 5 days as designed 2 Repair eroded areas immediately, re -seed as necessary to maintain good vegetative cover, mow_ vegetative cover to maintain a maximum height of six inches, and remove trash as needed` ` 3 Inspect and repair the collection system (i a catch basins, piping, swales, nprap, etc ) quarterly to maintain proper functioning 4 Remove accumulated sediment from the wet detention basin system semi-annually or when depth is reduced to 75% of the original design depth (see diagram below) Removed sediment shall be disposed of in an appropriate manner and shall be handled in a manner that will not adversely impact water quality (i a stockpiling near a wet detention basin or stream, etc ) J The measuring device used to deternme the sediment elevation shall be such that it will give an accurate depth reading and not readily penetrate into accumulated sediments When the permanent pool depth reads 4.5 feet in the main pond, the sediment shall be removed When the permanent pool depth reads 3.75 feet in the forebay, the sediment shall be removed i �s r .% " Sediment Redtoval El 6.25 J. 7 Bottom Ele anon 5.00 FOREBAY BASIN DIAGRAM (fill to the blanks) Permanent Pool Elevation 10.00' Sediment Removal Elevation 5 , 50' Bottom Elevation 4.00' tjtS�iL` I t�l lili it •� 75% 25 % 5 Remove cattails and other indigenous wetland plants when they cover 50% of the basin surface These plants shall be encouraged to grow along the vegetated shelf and forebay berm. 6 If the basin must be drained for an emergency or to perform maintenance, the flushing of sediment through the emergency drain shall be minimized to the maximum extent practical. Form SWU-102 Rev 3 99 Page 3 of 4 7 All components of the wet detention basin system skull be maintained in good working order 1 acknowledge and agree by my signature below that 1 am responsible for the performance of the seven maintenance procedures listed above 1 agree to notify DWQ of any problems with the system or pnor to any changes to the system or responsible party Print name Edward core, Jr. Title President Phone Signati Date -3- lLI � 1-11C�O0 Note The legally responsible party should not be a homeowners association unless more than 50% of the lots have been sold and a resident of the subdivision has been named the president. I, 1 , a Notary Public for the State of Kcx +k Cctn 11I o� County of i��4,r�guJ : , do hereby certify that F c�+�'d F- . ~ personally appeared before me this day of LZa Lz) and acknowledge the due execution of the forgoing wet detention basin maintenance requirements Witness my hand and official seal, My cornmission expires_ ) 0 ^ate : ;;� 00 3 r . Form SWU-102 Rev 3 99 Page 4 of 4