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HomeMy WebLinkAboutSW8060831_CURRENT PERMIT_20061005STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO. SW 'T,l.lO(J'FJ31 DOC TYPE � CURRENT PERMIT ❑ APPROVED PLANS ❑ HISTORICAL FILE ❑ COMPLIANCE EVALUATION INSPECTION DOC DATE ozTGYo /Uos__ YYYYMMDD oFwArFR O`a pG 0 October 5, 2006 Mr Charles R Price, Manager Overlook at Carson's Creek, LLC 3105A Holden Beach Road Supply, NC 28462 Subject* Stormwater Permit No. SW8 060831 Overlook at Carson's Creek High Density Project Brunswick County Dear Mr Price Michael I EaslLy, Governor William G Ross Jr , Sccrctary North Carolina Department of Fnvironment and Natural Resources Alan W Klimek, P C Director Division of Water Quality The Wilmington Regional Office received a complete Stormwater Management Permit Application for Overlook at Carson's Creek on September 7, 2006 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 060831 dated October 5, 2006, for the construction of the subject project This permit shall be effective from the date of issuance until October 5, 2016, and shall be subject to the conditions and limitations as specified therein Please pay special attention to the Operation and Maintenance requirements in this permit Failure to establish an adequate system for operation and maintenance of the stormwater management system will result in future compliance problems If any parts, requirements, or limitations contained in this permit are unacceptable, you have the right to request an adjudicatory hearing upon written request within sixty (60) 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 Paul Bartlett, or me at (910) 796-7125 Sincerel ; Edward Beck Regional Supervisor Surface Water Protection Section ENB/ptb S 1WQSISTORMWATERERIPERMIT1060831 oct06 cc J Phillip Norris, P E , Norris, Kuske & Tunstall Consulting Engineers, Inc Delaney Aycock, Brunswick County Building Inspections Jeff Phillips, Brunswick County Engineering Paul T Bartlett, P E [Wilmington Regional-Offic Central Files N �o�r Carolina Natura!!1l North Carolina DO, ision of Water Quality 127 Cardinal Drive Extension Wilmington, NC 28405 Phone (910) 796 7215 Customer Service Wilmington Regional Offica Internet wAw ncwatliquaiity org Fax (910) 350 2004 1 877 623-6748 An Equal OppertunitylAffirmattve Action Employer — 50% Recycledl10% Post Consumer Paper State Stormwater Management Systems Permit No SWs 06083,1 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 Charles R Price and Overlook at Carson's Creek, LLC Overlook at Carson's Creek Brunswick County FOR THE construction, operation and maintenance of an infiltration basin 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 October 5, 2016, and shall be subject to the following specified conditions and limitations I DESIGN STANDARDS 1 This permit is effective only with respect to the nature and volume of stormwater described in the application and other supporting data 2 This stormwater system has been approved for the management of stormwater runoff as described in Section 16 on page 3 of this permit The stormwater control has been designed to handle the runoff from 169,654 square feet of impervious area This basin must be operated with a 50' vegetated filter 3 The tract will be limited to the amount of built -upon area indicated on page 3 of this permit, and per approved plans The built -upon area for the future development is limited to 2,500 square feet 4 All stormwater collection and treatment systems must be located in either dedicated common areas or recorded easements The final plats for the project will be recorded showing all such required easements, in accordance with,the approved plans 5 The runoff from all built -upon area within the permitted drainage area of this project must be directed into the permitted stormwater control system Page 2 of 7 7 6 State Stormwater Management Systems Permit No SW8 060831 The following design criteria have been provided in the infiltration basin and must be maintained at design condition a c d e f 9 h .1 m n 0 p Drainage 2Area, acres Onsite, ft Offsite, ft2 Total Impervious Syrfaces, ft2 Onsite Buildings, ft Onsite Street/Parking, ft2 2 Onsite Sidewalks & Driv?s, ft Other Onsite (Future), ft Offsite (Exist Street), ft Design Storm, inches Basin Depth, feet Bottom Elevation, FMSL Bottom Surface Area, ft2 Bypass Weir Elevation, FMSL Permitted Storage Volume, ft3 Type of Soil Expected Infiltration Rate, in/hr Seasonal High Water Table, FMSL Time to Draw Down, hours Receiving Stream/River Basin Stream Index Number Classification of Water Body Pump Station TS II SCHEDULE OF COMPLIANCE 742 315,055 8,160 169,654 83,940 55,452 19,602 2,500 8,160 15 09 308 26,891 29 00 (Bypass via top of Pump Station) 25,912 Mandarin and Leon Sand 50 2869 6 3 (at Pump rate = 420 GPM) UT ICWW / Lumber 15-25 "SA, HQW" URUMI Model # KTZ 45 5-60 7 5 HP, 3430 rpm, 230/460 V, 30, 60 HZ Operating Point = 420 GPM, 15' TDH Pump On Invert Elev = 25 0' Pump Off Invert Elev = 24 0' 1 The stormwater management system shall be constructed in its entirety, vegetated and operational for its intended use prior to the construction of any built -upon surface 2 During construction, erosion shall be kept to a minimum and any eroded areas of the system will be repaired immediately 3 The permittee shall at all times 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 slopes and the vegetated filter d Immediate repair of eroded areas e Maintenance of all slopes in accordance with approved plans and specifications f Debris removal and unclogging of bypass structure, infiltration media, flow spreader, catch basins, piping and vegetated filter g A clear access path to the bypass structure must be available at all times Page 3 of 7 State Stormwater Management Systems Permit No SW8 060831 4 Records of maintenance activities must be kept and made available upon request to authorized personnel of DWQ The records will indicate the date, activity, name of person performing the work and what actions were taken 5 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 6 Upon completion of construction, prior to issuance of a Certificate of Occupancy, and prior to operation of this permitted facility, a certification must be received from an appropriate designer for the system installed certifying that the permitted facility has been installed in accordance with this permit, the approved plans and specifications, and other supporting documentation Any deviations from the approved plans and specifications must be noted on the Certification A modification may be required for those deviations 7 If the stormwater system was used as an Erosion Control device, it must be restored to design condition prior to operation as a stormwater treatment device, and prior to occupancy of the facility 8 Access to the stormwater facilities shall be maintained via appropriate easements at all times 9 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 Project name change c Transfer of ownership d Redesign or addition to the approved amount of built -upon area or to the drainage area e Further subdivision, acquisition, lease or sale of all or part of the project area The project area is defined as all property owned by the permittee, for which Sedimentation and Erosion Control Plan approval or a CAMA Major permit was sought f Filling in, altering, or piping of any vegetative conveyance shown on the approved plan 10 The permittee shall submit final site layout and grading plans for any permitted future areas shown on the approved pans, prior to construction 11 A copy of the approved plans and specifications shall be maintained on file by the Permittee for a minimum of ten years from the date of the completion of construction 12 The Director may notify the permittee when the permitted site does not meet one or more of the minimum requirements of the permit Within the time frame specified in the notice, the permittee shall submit a written time schedule to the Director for modifying the site to meet minimum requirements The permittee shall provide copies of revised plans and certification in writing to the Director that the changes have been made Ill. GENERAL CONDITIONS This permit is not transferable except after notice to and approval by the Director In the event of a change of ownership, or a name change, the permittee must submit a formal permit transfer request to the Division of Water Quality, accompanied by a completed name/ownership change form, 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 The permittee is responsible for compliance with all permit conditions until such time as the Division approves the transfer request Page 4 of 7 State Stormwater Management Systems Permit No SW8 060831 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) having 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 during normal business hours 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 7 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 8 Approved plans and specifications for this project are incorporated by reference and are enforceable parts of the permit 9 The permittee shall notify the Division any name, ownership or mailing address changes within 30 days Permit issued this the 5th day of October 2006 NO -CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION fbrAlalimek,-PE, Director Division of Water Quality By Authority of the Environmental Management Commission Page 5 of 7 State Stormwater Management Systems Permit No SW8 060831, Page 1 of 2 Overlook at Carson's Creek Stormwater Permit No SW8 060831 Brunswick Count Designer's Certification I, , as a duly registered in the State of North Carolina, having been authorized to observe (periodically/ weekly/ full time) the construction of the project, (Project) for (Project Owner) hereby state that, to the best of my abilities, due care and diligence was used in the observation of the project construction such that the construction was observed to be built within substantial compliance and intent of the approved plans and specifications The checklist of items on page 2 of this form is included in the Certification Noted deviations from approved plans and specification Signature Registration Number Date SEAL Page 6 of 7 State Stormwater Management Systems Permit No SW8 060831 Page 2 of 2 Certification Requirements 1 The drainage area to the system contains approximately the permitted acreage 2 The drainage area to the system contains no more than the permitted amount of built -upon area 3 All the built -upon area associated with the project is graded such that the runoff drains to the system 4 All roof drains are located such that the runoff is directed into the system 5 The bypass structure weir elevation is per the approved plan 6 The bypass structure is located per the approved plans 7 A Trash Rack is provided on the bypass structure 8 All slopes are grassed with permanent vegetation 9 Vegetated slopes are no steeper than 3 1 10 The inlets are located per the approved plans and do not cause short- circuiting of the system 11 The permuted amounts of surface area and/or volume have been provided 12 All required design depths are provided 13 All required parts of the system are provided 14 The required system dimensions are provided per the approved plans cc NCDENR-DWQ Regional Office Delaney Aycock, Brunswick County Building Inspections Jeff Phillips, Brunswick County Engineering Page 7 of 7 0 NKT #06072 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 1 GENERAL INFORMATION 1 Applicants name (specify the name of the corporation, individual, etc who owns the project) Overlook at Caison's Creek, LLC 2 Print Owner/Signing Official's name and title (person legally responsible for facility and compliance) Greg Faurote, Agent C 12 3 Mailing Address for person listed in item 2 above 3105A Holden Beach Road City Supply Telephone Number State NC Zip 28462 4 Project Name (subdivision, facility, or establishment name — should be consistent with project name on plans, specifications, Ietters, operation and maintenance agreements, etc ) Overlook at Caison's Creek 5 Location of Project (street address) NC 130 City Holden Beach County Brunswick 6 Directions to project (from nearest major intersection) From the intersection of US 17 & NC 130, take NC 130 towards Holden Beach to the intersection of NC 130 and SR 1139 Site is on the naht lust oast this intersection 7 Latitude 330 55' 33" Longitude 780 17' 23" of project 8 Contact person who can answer questions about the project Name J Phillip Norris, P E Telephone Number (910) 343-9653 Il PERMIT INFORMATION I Specify whether project is (check one) X New Renewal Modification Form SWU-101 Version 3 99 Page 1 of 4 I 2 If this application is being submitted as the result of a renewal or modification to an existing permit, list the Existing permit number NIA And its issue date (if known) NIA 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 404/401 Permit NPDES Stormwater Information on required state permits can be obtained by contacting the Customer Service Center at 1-877-623-6748 Ill PROJECT INFORMATION 1 In the space provided below, summarize how stormwater will be treated Also attach a detailed narrative (one to two pages) describing stormwater management for the project Infiltration Basin 2 Stormwater runoff from this project drains to the Lumber River Basin 3 Total Project Area 7 42 AC 4 Project Built Upon Area 525 °/a 5 How many drainage areas does the project have? 1 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 Basin Information Drainage Area I Drainage Area 2 Receiving Stream Name UT Atlantic Intracoastal Waterway Receiving Stream Class SA' ly Qq); /06 Drainage Area 7 42 AC 132 ,215 SF Existina Impervious * Area 0 187 AC 18,160 SF Prol2osed Impervious* Area 3 71 AC 1 161,607 SF % Im envious* Area total 52 5% Im envious* Surface Area Drainage Area I Drainage Area 2 On -site Buildings 1 927 AC /83,940 SF On -site Streets 0 On -site Parkin 1 273 AC 155,452 SF On -site Sidewalks & Drives 0 450 AC 1 19,602 SF Other on -site (Future) 0 057 AC 12,500 SF Off -site (Ex Street) 0 187 AC 18,160 SF Total 3 89 AC 1 169,654 SF Total * hnpen,iouv area is defined av the built upon area including, but not !united to, buddnrgv i oadv, parking areac sidewalks, gravel areas, etc Form SWU-101 Version 3 99 Page 2 of 4 How was the off -site impervious area listed above derived? NIA IV DEED RESTRICTIONS AND PROTECTIVE COVENANTS The following italicized deed restrictions and protective covenants are required to be recorded for all subdivisions, outparcels and future development prior to the sale of any lot If lot sizes vary significantly, a table listing each lot number, size and the allowable built -upon area for each lot must be provided as an attachment 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 No more than 169,654 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 Wales 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 All permitted runofffrom outparcels or future development shall be directed into the permitted stormwater control system These connections to the stormwater control system shall be performed in a manner that maintains the integrity and performance of the system as permitted By your signature below, you certify that the recorded deed restrictions and protective covenants for this project shall include all the applicable items required above, that the covenants will be binding on all parties and persons claiming under them, that they will run with the land, that the required covenants cannot be changed or deleted without concurrence from the State, and that they will be recorded prior to the sale of any lot V SUPPLEMENT FORMS The applicable state stormwater management permit supplement form(s) listed below must be submitted for each BMP specified for this project Contact the Stormwater and General Permits Unit at (919) 733-5083 for the status and availability of these forms Form SWU-102 Form SWU-103 Form SWU-104 Form SWU-105 Form SWU-106 Form SWU-107 Form SWU-108 Form SWU-109 Wet Detention Basin Supplement Infiltration Basin Supplement Low Density Supplement Curb Outlet System Supplement Off -Site System Supplement Underground Infiltration Trench Supplement Neuse River Basin Supplement 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. 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 $4m(payabie to NCDENR)� `�i f ION , 0 • Detailed narrative description of stormwater treatment / management • Two copies of plans and specifications, 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 - Original contours, proposed contours, spot elevations, finished floor elevations - 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) VII 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 J Phillip Noms, P E Designated agent (individual or firm) Norris, Kuske S Tunstall Consulting Engtneers, Inc Mailing Address 902 Market Street City Wilmington State NC Zip Phone (910) 343-9653 Fax (910) 343-9604 VH1. APPLICANT'S CERTIFICATION 28401 I, (print or type name ofperson listed in General Information, item 2) Greg Faurote, Agent , 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 Form SWU-101 Version 3 99 Page 4 of 4 Date 7 — / 3 0)(o 4 c, a N KT #06072 Permit No 5 U ot:� 0 t 31 State of North Carolina (to be provided by DWQ) Department of Environment and Natural Resources Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM INFILTRATION BASIN SUPPLEMENT This form may be photocopied for use as an original DWQ Stormwater Management Plan Review A complete stormwater management plan submittal includes a stormwater application form, an infiltration basin supplement for each system, design calculations, soils report and plans and specifications showing all stormwater conveyances and system details I. PROJECT INFORMATION Project Name Overlook at Carson's Creek Contact Person J Phillip Norris, P E Phone Number (910) 343-9653 This worksheet applies to Basin No in Drainage Area (as identified on plan) (from Form SWU-101) II. DESIGN INFORMATION — Attach supporting calculations/documentation The soils report must be based upon an actual field investigation and soil borings County soil maps are not an acceptable source of soils information All elevations shall be in feet mean sea level (fmsl) Sods Report Summary Soil Type Infiltration Rate SHWT Elevation Basin Design Parameters Design Storm Design Volume Drawdown Time Basin Dimensions Basin Size Basin Volume Provided Basin Elevations Bottom Elevation Storage Elevation Top Elevation Mandarin & Leon Sand 5 [n/hr br cf/iir/sf (circle appropriate units) 2869 finsl (Seasonal High Water Table elevation) 15 inch 25,046 c f 0 085 Days (1 5 inch event for SA waters, I inch event for others) Irregular ft x Irregular ft = 26,891 sq ft (bottom dimensions) 25,912 c f Form SWU-103 Version 3 99 30 80 fins! 3170 fmsl 3220 Emil C�-)s 16'�f r v t[Nrlt d 1 } Page 1 of 3 III REQUIRED ITEMS CHECKLIST The following checklist outlines design requirements per the Stormwater Best Management Practices Manual (N C Department of Environment, Health and Natural Resources, February 1999) and Administrative Code Section 15 A NCAC 2H 1008 Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached If the applicant has designated an agent in the Stormwater Management Permit Application Form, the agent may initial below If a requirement has not been met, attach justi;ficatfion. Applicants Initials System is located 50 feet from class SA waters and 30 feet from other surface waters System is located at least 100 feet from water supply wells Bottom of system is at least 2 feet above the seasonal high water table Bottom of the system is 3 feet above any bedrock or impervious soil horizon System is not sited on or in fill matenai DWQ approval has been obtained System is located in a recorded drainage easement for the purposes of operation and maintenance and has recorded access easements to the nearest public nght-of-way Drainage area for the device is less than 5 acres Soils have a minimum hydraulic conductivity of 0 52 inches per hour and soils report is attached System captures and infiltrates the runoff from the first 10 inch of rainfall (1 5 inch event for areas draining to SA waters) Design volume and infiltration calculations attached System is sized to take into account the runoff at the ultimate built -out potential from all surfaces draining to the system, including any off -site drainage Calculations attached All side slopes stabilized with vegetated cover are no steeper than 3 1 (H V) A pretreatment device such as a catch basin, grease trap, filter strip, grassed swale or sediment trap is provided Bottom of the device is covered with a layer of clean sand to an average depth of 4 inches or dense vegetative cover is provided Vegetated filter is provided for overflow and detail is shown on plans (Required minimum length is 50 feet for SA waters, 30 feet for other waters o Flow distribution mechanism within the basin is provided A benchmark is provided to determine the sediment accumulation in the pretreatment device q Runoff in excess of the design volume bypasses off-line systems (bypass detail provided) r System is designed to draw down the design storage volume to the proposed bottom elevation under seasonal high water conditions within five days A soils report and all pertinent draw -down calculations are attached s Plans ensure that the installed system will meet design specifications (constructed or stored) upon initial operation once the project is complete and the entire drainage area is stabilized Form SWU-103 Version 3 99 Page 2 of 3 Pfr' IV. INFILTRATION BASIN OPERATION AND MAINTENANCE AGREEMENT l After every runoff producing rainfall event and at least monthly inspect the infiltration system for erosion, trash accumulation, vegetative cover, and general condition 2 Repair eroded areas immediately, re -seed as necessary to maintain adequate vegetative cover, mow vegetated cover to maintain a maximum height of six -inches, and remove trash as needed After every runoff producing rainfall event and at least monthly inspect the bypass, inflow and overflow structures for blockage and deterioration Remove any blockage and repair the structure to approved design specifications 4 Remove accumulated sediment from the pretreatment system and infiltration basin annually or when depth in the pretreatment unit is reduced to 75% of the original design depth The system shall be restored to the original design depth without over -excavating Over -excavation may cause the required water table separation to be reduced and may compromise the ability of the system to perform as designed Removed sediment shall be disposed of in an appropriate manner and shall not be handled in a manner that will adversely impact water quality (i a stockpiling near a stormwater treatment device or stream, etc ) A benchmark shall be established in the pretreatment unit The benchmark will document the original design depth so that accurate sediment accumulation readings can be taken The measuring device used to determine the depth at the benchmark shall be such that it will give an accurate depth reading and not readily penetrate into accumulated sediments When the design depth reads 0 • (0 15 feet in the pretreatment unit, the sediment shall be removed from both the pretreatment unit and the infiltration basin. If the Division determines that the system is failing, the system will immediately be repaired to original design specifications if the system cannot be repaired to perform its design function, other stormwater control devices as allowed by NCAC 2H 1000 must be designed, approved and constructed I acknowledge and agree by my signature below that I am responsible for the performance of the five maintenance procedures listed above I agree to notify DWQ of any problems with the system or prior to any changes to the system or responsible party Print Name and Title Greg_Faurote, Agent Address 3105A Hoiden Beach Road Supply, NC 28462 Phone 910-842-7/898 Date 7 -- i3 cv Signature Note: The legally responsible party should not be a homeowners association unless more than SO% of the lots have been sold and a resident of the subdivision has been named the president a Notary Public for the State of \ 1` (� CtiCounty of Ntu�1�'t , do hereby certify that C(_IfI F(L�Lf C, 'U personally appeared before me this day of \ , and acknowledge the due execution of the foregoing infiltration gtnance requirements Witness my hand and official seal 1,�,O lk ) AWature zR� pt�BL�G i Four wr L -�., r r "�ra �10 `7 ~�w.a.�* V ,,, 4AIO VAR ', %- CM mission expires �� w Page 3 of 3 NKT #06072 • •. III illlilillillillillill III III 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 I Applicants name (specify the name of the corporation, individual, etc who owns the project) Overlook at Carson's Creek, LLC 2 Print Owner/Signing Official's name and title (person legally responsible for facility and compliance) Greq Faurote, Actent C_ i ,,, r IV .i rc . !'!' < < p Z17�u 3 Mailing Address for person listed in item 2 above 3105A Holden Beach Road City Supply State NC Zip 28462 Telephone Number (910) 842-7898 4 Project Name (subdivision, facility, or establishment name — should be consistent with project name on plans, specifications, letters, operation and maintenance agreements, etc ) Overlook at Carson's Creek 5 Location of Project (street address) NC 130 City Holden Beach County Brunswick 6 Directions to project (from nearest major intersection) From the intersection of US 17 & NC 130, take NC 130 towards Holden Beach to the intersection of NC 130 and SR 1139 Site is on the right just past this intersection 7 Latitude 330 55' 33" Longitude 780 17' 23" of project 8 Contact person who can answer questions about the project Name d Phillip Norns, P E Telephone Number (910) 343-9653 II PERMIT INFORMATION I Specify whether project is (check one) Form SWU-101 Version 3 99 X New Page 1 of 4 Renewal Modification 0 2 If this application is being submitted as the result of a renewal or modification to an existing permit, list the Existing permit number NIA And its issue date (if known) _ NIA 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 404/401 Permit NPDES Stormwater Information on required state permits can be obtained by contacting the Customer Service Center at 1-877-623-6748 Ill PROJECT INFORMATION 1 In the space provided below, summarize how stormwater will be treated Also attach a detailed narrative (one to two pages) describing stormwater management for the project Infiltration Basin 2 Stormwater runoff from this project drams to the 3 Total Project Area 7 42 AC Lumber S How many drainage areas does the project have? 1 River Basin 4 Project Built Upon Area 525 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 Bann Information Drainage Area I Drainage Area 2 Receiving Stream Name UT Atlantic Intracoastal Waterway ReceivingStream Class SA' >' jev Drainage Area 7 42 AC 132 ,215 SF Existma Impervious * Area 0 187 AC 18,160 SF Proposed Impervious* Area 3 71 AC 1 161,607 SF % Impervious* Area total 52 5% Impervious* Surface Area Drainage Area 1 Drainage Area 2 On -site Buildings 1 927 AC / 83,940 SF On -site Streets 0 On -site Parking 1 273 AC / 55,452 SF On -site Sidewalks & Dives 0 450 AC 1 19,602 SF Other on -site (Future) 0 057 AC 12,500 SF Off -site Ex Street) 1 0 187 AC 18,160 SF Total 3 89 AC 1 169,654 SF Total * Impen,rouv ai ea is defined as the burll upon area including, but not limited to, buildings, i oadv, par king areav sidewalks, gravel areas, etc Form SWU-101 Version 3 99 Page 2 of 4 7 How was the off -site impervious area listed above derived? N/A IV DEED RESTRICTIONS AND PROTECTIVE COVENAN IS The following italicized deed restrictions and protective covenants are required to be recorded for all subdivisions, outparcels and future development prior to the sale of any lot If lot saes vary significantly, a table listing each lot number, size and the allowable built -upon area for each lot must be provided as an attachment 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 169,654 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 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 All permitted runoff from outparcels or future development shall be directed into the permitted stormwater control system These connections to the stormwater control system shall be performed in a manner that maintains the integrity and performance of the system as permitted By your signature below, you certify that the recorded deed restrictions and protective covenants for this project shall include all the applicable items required above, that the covenants will be binding on all parties and persons claiming under them, that they will run with the land, that the required covenants cannot be changed or deleted without concurrence from the State, and that they will be recorded prior to the sale of any lot V SUPPLEMENT FORMS The applicable state stormwater management permit supplement form(s) listed below must be submitted for each BMP specified for this project Contact the Stormwater and General Permits Unit at (919) 733-5083 for the status and availability of these forms Form SWU-102 Form SWU-103 Form SWU-104 Form SWU-105 Form SWU-106 Form SWU-107 Form SWU-108 Form SWU-109 Wet Detention Basin Supplement Infiltration Basin Supplement Low Density Supplement Curb Outlet System Supplement Off -Site System Supplement Underground Infiltration Trench Supplement Neuse River Basin Supplement 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. 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 $421"payable to NCDENR)1�1 000, 00 • Detailed narrative description of stormwater treatment / management • Two copies of plans and specifications, 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 - Original contours, proposed contours, spot elevations, finished floor elevations - 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) VII 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 J Phillip Norris, P E Designated agent (individual or firm) Norris, Kuske & Tunstall Consulting Engineers, Inc _ Mailing Address 902 Market Street City Wilmington State NC Zip 28401 Phone (910) 343-9653 Fax (910) 343-9604 VM. APPLICANT'S CERTIFICATION I, (print or type name of person listed in General Information, item 2) Gre Faurote, A ent , 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 L R- Date Form SWU-101 Version 3 99 Page 4 of 4 i r Q N KT #06072 Permit No �(t+iD o&0 2) al State of North Carolina (to be provided by DWQ) Department of Environment and Natural Resources Division of Water Quality ��CI • ; u .: u : ► : i��t�i � : u �II:l1i��1I�IlI�]��C�]�1 INFILTRATION BASIN SUPPLEMENT This form may he photocopied for use as an original DWQ Stormwater Management Plan Review A complete stormwater management plan submittal includes a stormwater application form, an infiltration basin supplement for each system, design calculations, soils report and plans and specifications showing all stormwater conveyances and system details I. PROJECT INFORMATION Protect Name Overlook at Carson's Creek Contact Person J Phillip Norris, P E Phone Number This workshect applies to Basin No (910) 343-9653 in Drainage Area (as identified on plan) (from Form SWU-101) 11I. DESIGN INFORMATION —Attach supporting calculations/documentation The soils report must be based upon an actual held investigation and soil borings County soil maps are not an acceptable source of soils information All elevations shall be in feet mean sea level (fmsl) Soils Report Summary Soil Type Infiltration Rate SHWT Elevation Basin Design Parameters Design Storm Design Volume Drawdown Time Basin Dimensions Basin Size Basin Volume Provided Basin Elevations Bottom Elevation Storage Elevation Top Elevation Mandarin & Leon Sand 5 ln/hr br cf/hr/sf (circle appropriate units) 2869 fmsl (Seasonal High Water Tahle elevation) 15 inch (1 5 inch event far SA waters, 1 inch event for others) 25,046 c f 0 085 Days Irregular ft x Irregular ft = 26,891 sq ft (bottom dimensions) 25,912 c f Form SW11-103 Version 3 99 30 80 fmsl 17,4106 3170 fmsl f 3220 fimsl 0-�' I VtGi j Page 1 of 3 III. REQUIRED ITEMS CHECKLIST The following checklist outlines design requirements per the Stormwater Best Management Practices Manual (N C Department of Environment, Health and Natural Resources, February 1999) and Administrative Code Section 15 A NCAC 2H 1008 Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached If the applicant has designated an agent in the Stormwater Management Permit Application Form, the agent may initial below If a requirement has not been met, attach justification. Applicants Initials System is located 50 feet from class SA waters and 30 feet from other surface waters System is located at least 100 feet from water supply wells Bottom of system is at least 2 feet above the seasonal high water table Bottom of the system is 3 feet above any bedrock or impervious soil horizon System is not sited on or in fill material DWQ approval has been obtained System is located in a recorded drainage easement for the purposes of operation and maintenance and has recorded access easements to the nearest public right-of-way Drainage area for the device is less than 5 acres Soils have a minimum hydraulic conductivity of 0 52 inches per hour and soils report is attached System captures and infiltrates the runoff from the first 1 0 inch of rainfall (1 5 inch event for areas draining to SA waters) Design volume and infiltration calculations attached System is sized to take into account the runoff at the ultimate built -out potential from all surfaces draining to the system, including any off -site drainage Calculations attached All side slopes stabilized with vegetated cover are no steeper than 3 1 (H V) A pretreatment device such as a catch basin, grease trap, filter strip, grassed swale or sediment trap is provided Bottom of the device is covered with a layer of clean sand to an average depth of 4 inches or dense vegetative cover is provided Vegetated filter is provided for overflow and detail is shown on plans (Required minimum length is 50 feet for SA waters, 30 feet for other waters o Flow distribution mechanism within the basin is provided A benchmark is provided to determine the sediment accumulation in the pretreatment device q Runoff in excess of the design volume bypasses off-line systems (bypass detail provided) r System is designed to draw down the design storage volume to the proposed bottom elevation under seasonal high water conditions within five days A soils report and all pertinent draw -down calculations are attached s Plans ensure that the installed system will meet design specifications (constructed or stored) upon initial operation once the project is complete and the entire drainage area is stabilized Form SWU-103 Version 3 99 Page 2 of 3 IV. INFILTRATION BASIN OPERATION AND MAINTENANCE AGREEMENT After every runoff producing rainfall event and at least monthly inspect the infiltration system for erosion, trash accumulation, vegetative cover, and general condition 2 Repair eroded areas immediately, re -seed as necessary to maintain adequate vegetative cover, mow vegetated cover to maintain a maximum height of six -inches, and remove trash as needed 3 After every runoff producing rainfall event and at least monthly inspect the bypass, inflow and overflow structures for blockage and deterioration Remove any blockage and repair the structure to approved design specifications 4 Remove accumulated sediment from the pretreatment system and infiltration basin annually or when depth in the pretreatment unit is reduced to 75% of the original design depth The system shall be restored to the original design depth without over -excavating Over -excavation may cause the required water table separation to be reduced and may compromise the ability of the system to perform as designed Removed sediment shall be disposed of in an appropriate manner and shall not be handled in a manner that will adversely impact water quality (i a stockpiling near a stormwater treatment device or stream, etc ) A benchmark shall be established in the pretreatment unit The benchmark will document the original design depth so that accurate sediment accumulation readings can be taken The measuring device used to determine the depth at the benchmark shall be such that it will give an accurate depth reading and not readily penetrate into accumulated sediments When the design depth reads D - (01 $ feet in the pretreatment unit, the sediment shall be removed from both the pretreatment unit and the infiltration basin If the Division determines that the system is failing, the system will immediately be repaired to original design specifications if the system cannot be repaired to perform its design function, other stormwater control devices as allowed by NCAC 2H 1000 must be designed, approved and constructed I acknowledge and agree by my signature below that 1 am responsible for the performance of the five maintenance procedures listed above I agree to notify DWQ of any problems with the system or prior to any changes to the system or responsible party Print Name and Title Greg Faurote, Agent _ Address 3105A Hoiden Beach Road Supply, NC 28462 Phone 910-842-7898 Date 7 --I Signature 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, t , a Notary Public for the State of Lffi ka\161("County0f do hereby certify that GFUI personally appeared before me this day of , , and acknowledge the due execution of the foregoing infiltration iWriance requirements Witness my hand and official seal C'� M ommission expires ._ _0.11-- e8t�iature _ �►�'°�! B LAG 2 Foy. W03 rsion 3 99 Page 3 of 3 All— u . J Phillip Norris, P E John S Tunstall, P E NORRIS, KUSKE & TUNSTALL John A Kuske, III, P E James T Pyrtte, P E Kent P Harrell, P E Philip Bewiacqua, Jr, P E CONSULTING ENGINEERS, INC.James L Lewis, Jr,Jr P E J A Kuske, P E 902 Market Street • Wilmington, NC 28401-4733 • Phone (910) 343-9653 • Fax (910) 343-9604 E-Mail offioe@nktang com LETTER OF TRANSMITTAL To Mr Ed Beck Date December 4, 2007 Job No 06072 NC DENR /Division of Water Quality subject Overlook at Calson's Creek 127 Cardinal Drive Extension Wilmington, NC28405-3845 WE ARE SENDING YOU VIA ® ATTACHED ❑ UNDER SEPARATE COVER ❑ SHOP DRAWINGS ❑ PRINTS ❑ TRACINGS ❑ SPECIFICATIONS ❑ DISKS ❑ COPY OF LETTER ❑ FAX TRANSMITTAL: NUMBER OF PAGES INCLUDING THIS TRANSMITTAL Call 910-287-5900 If you have any difficulty receiving this message COPIES DATE NO DESCRIPTION 1 Certification a h0l wbvv 1��F-T�D DEC Il 6 2007 BY --- ❑ ® AS REQUESTED ❑ FOR REVIEW AND COMMENT ❑ FOR APPROVAL FOR YOUR USE ❑ FOR BIDS DUE ❑ YOUR PRINTS LOANED TO US REMARKS cc SIGNED J Phillip Norris, P E / neh CONFIDENTIAL AND PRIVILEGED Information contained in this document is privileged and confidential, intended for the sole use of the addressee If you are not the addressee or the person responsible for delivering it to the addressee you are hereby notified that any dissemination, distribution or copying of this document is strictly prohibited If you have received this document in error please immediately notify the sender and return to the address above 14 kL- cq6e7,oq. State Stormwater Management Systerns Permit No SW8 060831 Page 1 of 2 Overlook at Carson's Creek Stormwater Permit No SW8 060831 Brunswick Count Designer's Certification I, J Phillip Norris , as a duly registered Professional Engineer in the State of North Carolina, having been authorized to observe (periodically/vv Ey/ fie) the construction of the protect, Overlook at Carson's Creek (Protect) for Overlook at Caison I s Creek, LLC (Project 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 specification Signature Registratic natp Dec SEAL Page 6 of 7 11 State Stormwater Management Systems Permit No SW8 060831 Page 2 of 2 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 t 3 All the built -upon area associated with the project is graded such that the runoff drains to the system Ali roof drains are located such that the runoff is directed into the system The bypass structure weir elevation is per the approved plan f14 The bypass structure is located per the approved plans Trash Rack is provided on the bypass structure All slopes are grassed with permanent vegetation Vegetated slopes are no steeper than 3 1 10 The inlets are located per the approved plans and do not cause short- i circuiting of the system iitted amounts of surface area and/or volume have been ed design depths are provided ed parts of the system are provided fired system dimensions are provided per the approved plans cc NCDENR-DWQ Regional Office Delaney Aycock, Brunswick County Building Inspections Jeff Phillips Brunswick County Engineering Page 7 of 7