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HomeMy WebLinkAboutSW8000415_CURRENT PERMIT_20010926STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT oo�7IS NO. SW DOC TYPE � CURRENT PERMIT ❑ APPROVED PLANS ❑ HISTORICAL FILE ❑ COMPLIANCE EVALUATION INSPECTION DOC DATE ,-2a Lo la� YYYYMMDD Michael F Easley, Governor William G Ross, Jr, Secretary North Carolina Department of Environment and Natural Resources Gregory J Thorpe, Ph D , Acting Director Division of Water Quality Wilmington Regional Office September 26, 2001 Ms LaDane Williamson, President Ocean Harbour Golf Links, Inc 9686 Scenic Drive Calabash, NC 28467 Subject Permit No SW8 000415 Resort LaDane- Ocean Harbour Golf Links High Density Stormwater Project Brunswick County Dear Ms Williamson The Wilmington Regional Office received a complete Stormwater Management Permit Application for Resort LaDane- Ocean Harbour Golf Links on September 20, 2001 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 000415 dated September 26, 2001, for the construction of Resort LaDane- Ocean Harbour Golf Links This permit shall be effective from the date of issuance until September 26, 2011, 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 ofthe 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 0 If you have any questions, or need additional information concerning this matter, please contact Linda Lewis, or me at (910) 395-3900 Sincerely, Rick Shiver Water Quality Regional Supervisor RSS/arl S 1WQSISTORMWATIPERMIT1000415 SEP cc Harlan Britt, P E Town of Calabash Building Inspections Division of Coastal Management Linda Lewis Wilmington Regional Office Central Files N C Division of Water Quality 127 Cardinal Drive Extension Wilmington N C 28405 (910) 395-3900 Fax (910) 350-2004 NMENER Customer Service 800-623-7748 State Stormwater Management Systems Permit No SW8 000415 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 Ocean Harbour Golf Links, Inc Resort LaDane- Ocean Harbour Golf Links Brunswick County FOR THE construction, operation and maintenance of 25% overall low density with 3 infiltration basins for the pockets of high density- the clubhouse, multi -family and recreation facility, in compliance with the provisions of 15A NCAC 2H 1000 (hereafter referred to as the "stormwater rules') and the approved stormwater management plans and specifications and other supporting data as attached and on file with and approved by the Division of Water Quality and considered a part of this permit This permit shall be effective from the date of issuance until September 26, 2011 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 on page 3 of this permit, the Project Data Sheet The three infiltration basins have been designed to handle the runoff from 58,197 ft2, 92,912 ft2, and 72,745 ftz respectively of impervious area Each basin must be operated with a 50' vegetated filter 3 The runoff from all built -upon area within the permitted high density drainage areas of this project must be directed into the permitted stormwater control system A permit modification must be submitted and approved prior to the construction of additional built -upon area from outside of the approved drainage area 4 Approved plans and specifications for this project are incorporated by reference and are enforceable parts of the permit 5 The tract must maintain compliance with an overall low density of 25% A total of 1,523,488 square feet of built -upon area is approved under this permit State Stormwater Management Systems Permit No SW8 000415 6 The built -upon area for this project will be limited to the total amount indicated in Section 1, Part 5 on page 2 of this permit, and per the approved plans The built -upon area for each of the infiltration basins is limited to the amounts shown on Page 4 of this permit, the project data sheet 7 Each of the 83 patio home lots (denoted on the approved plans with a "P") is limited to a maximum of 4,000 square feet of built -upon area, each of the 41 single family lots (denoted on the approved plans with an "S") is limited to 6,000 R2 of built -upon area CAMA regulations may reduce the allowable built -upon area for those lots within the AEC 8 The low density portion of the project covered by this permit will maintain a minimum 30 foot wide vegetative buffer between all impervious areas and surface waters 9 Within the low density portion of the project, the only runoff conveyance systems allowed will be vegetated conveyances such as swales with minimum side slopes of 3 1 (H V) as defined in the stormwater rules and approved by the Division 10 All roof drains within the low density portion of the project must terminate at least 30' from the mean high water mark All other roof drains must be directed into the permitted stormwater treatement system 11 Within the low density portion of the project, no piping shall be allowed except a That minimum amount necessary to direct runoff beneath an impervious surface such as a road b That minimum amount needed under driveways to provide access to lots 3 State Stormwater Management Systems 14 Permit No SW8 000415 DIVISION OF WATER QUALITY PROJECT DESIGN DATA SHEET Project Name Resort LaDane- Ocean Harbour Golf Links Permit Number SW8 000415 Location Brunswick County Applicant Ms LaDane Williamson, President Mailing Address Ocean Harbour Golf Links, Inc 9686 Scenic Drive Calabash, NC 28467 Application Date September 20, 2001 Name of Receiving Stream/Index # Lumber / Calabash Creek / 15-25-5 Classification of Water Body "SA" Basin Number Basin Depth, feet Bottom Elevation, FMSL Drainage Area, acres Total Impervious Surfaces, ft2 Offsrte Area entering Pond, ft2 Required Storage Volume, ft3 Provided Storage Volume, ft3 Temporary Storage Elevation, FMSL Controlling Orifice Type of Soil Expected Infiltration Rate Seasonal High Water Table Elevation, FMSL Time to Draw Down, hours 1 2 3 15 2 2 125 8 22 194 33 34 58,197 92,912 72,745 None, per Engineer 7,075 11,351 9,112 9,040 13,464 10,175 14 10 24 bypass at storage elevation to vegetated filter pipe Sand 18 inches per hour 10 4 195 9 14 15 4 State Stormwater Management Systems Permit No SW8 000415 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 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 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, orifice device and catch basins and piping g Access to the outlet structure must be available at all times h The vegetated filters will be kept grassed with no erosion The spreader mechanism will be kept free of sediment and trash, and must distribute the runoff evenly over the width of the filter 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 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 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 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 A modification must be permitted prior to any construction The following items will require a modification to the permit The Director may determine that other revisions to the project should 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, acquisition, or sale of the project area The project area is defined as all property owned by the permittee, for which Sedimentation and Erosion Control Plan approval was sought f Filling in, altering, or piping of any vegetative conveyance shown on the approved plan 10 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 5 State Stormwater Management Systems " Permit No SW8 000415 11 the permittee shall submit final site layout and grading plans for any permitted future areas shown on the approved plans, prior to construction If the proposed BUA exceeds the pemitted amount, a modification to the permit must be submitted and approved prior to construction 12 Deed restrictions are incorporated into this permit by reference and must be recorded with the Office of the Register of Deeds prior to the sale of any lot Recorded deed restrictions must include, as a minimum, the following statements related to stormwater management a "The maximum allowable built -upon area per lot for each of the 83 patio home lots (denoted on the approved plans with a "P") is limited to 4,000 square feet, each of the 41 single fanuly lots (denoted on the approved plans with an "S") is Iimited to 6,000 ft2 This allotted amount includes any built -upon area constructed within the lot property boundaries, and that portion of the right-of-way between the front lot line and the edge of the pavement Built upon area includes, but is not limited to, structures, asphalt, concrete, gravel, brick, stone, slate, and coquina, but does not include raised, open wood decking, or the water surface of swimming pools " b "The covenants pertaining to stormwater regulations may not be changed or deleted without concurrence of the Division of Water Quality " "Filling in or piping of any vegetative conveyances (ditches, swales, etc ) associated with the development except for average driveway crossings, is strictly prohibited by any persons " d "Lots withm CAMA's Area of Environmental Concern may have the permitted built -upon area reduced due to CAMA junsdiction within the AEC " "Each lot will maintain a 30' wide vegetated buffer between all impervious areas and surface waters " f "All roof drams shall terminate at Ieast 30' from the mean high water mark " 13 The permittee shall submit a copy of the recorded deed restrictions which indicates the approved built -upon area per lot within 30 days of the date of recording, and prior to selling any lots 14 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 15 The permittee is responsible for verifying that the proposed built -upon area does not exceed the allowable built -upon area Once the Iot transfer is complete, the built -upon area may not be revised without approval from the permittee and the Division of Water Quality, and responsibility for meeting the built -upon area limit is transferred to the individual property owner 16 The Director may notify the permittee when the permitted site does not meet one or more of the muumum requirements ofthe 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 pernuttee shall provide copies of revised plans and certification in writing to the Director that the changes have been made 17 The permittee shall notify the Division of any name, ownership or mailing address changes within 30 days 18 If an individual or group such as an Architectural Review Committee (ARC) will review plans for compliance with the BUA limit, the plans reviewed must include all proposed BUA, including house, driveway, roofed porches, outbuildings, and sidewalks Any approvals given by the ARC based on a specific plan do not relieve the homeowner of the responsibility to maintain compliance with the permitted BUA limit if modifications to that plan are made later If the plans indicate that the allowable BUA will be exceeded, it is the ARC's responsibility to deny the plans 51 State Stormwater Management Systems Permit No SW8 000415 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 The issuance of this permit does not preclude the Permittee from complying with any and all statutes, rules, regulations, or ordinances which may be nnposed 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 thus 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 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 Permit issued this the 26th day of September, 2001 NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION 0 ✓1 J, Gregory J Thorpe, P`hD , Acting, Directoi Division of Water Quality By Authority of the Environmental Management Commission Permit Number SW8 000415 7 State Stormwater Management Systems Permit No SW8 000415 Resort LaDane- Ocean Harbour Golf Links Stormwater Permit No SW8 000415 Brunswick County Designer's Certification 1, , as a duly registered in the State of North Carolina, having been authorized to observe (periodically/weekly/full-time) the construction of the project, (Prof ect) for {Prof ect 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 i 0 r State Stormwater Management Systems Permit No SW8 000415 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 outletibypass 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 Town of Calabash Building Inspections 9 k �, )I I �i, 1k I i,, 1, 4,, i OFFICE USE ONLY 1,1 , , -o r, 1 - s 1 „, " ", -'� 'I "> Date Received F e Paid Permit Number a3-OD l 4-M¢20 #/550 sW Q� 0004t5 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) Ocean Harbour Golf Links, Inc 2 Print Owner/Signing Official's name and title (person legally responsible for facility and compliance) Donald L Safrit, VP for Horizontal. Development 3 Mailing Address for person listed in item 2 above _ e 9(P5(a Sre'lic Dr _ City Calabash State — NC Zip 28467 Telephone Number 1 910 579-0733 4 Project Name (subdivision, facility, or establishment name -should be consistent with project name on plans, specifications, letters, operation and maintenance agreements, etc ) Resort LaDane — Ocean Harbour 5 Location of Project (street address) P.0 Box 7750 City Calabash, NC 28467 County _ Brunswick 6 Directions to project (from nearest major intersection) From Calabash take NCI79 toward Sunset Beach, 3 miles. Project is on the right at existing Ocean Harbour Golf Links, Inc. 7 Latitude Longitude of project 8 Contact person who can answer questions about the project Name Harlan Britt/Kimley—Horn Telephone Number ( 919 Tj 677--2000 II PERMIT INFORMATION 1 Specify whether project is (check one) X New Renewal Modification Form SWU-101 Version 3 99 Page 1 of 4 2 If this application is being submitted as the result of a renewal or modification to an existing permit, list the existing permit number and its issue date (if known) 3 Specify the type of project (check one) X Low Density High Density Redevelop General Permit Other 4 Additional Project Requirements (check applicable blanks) X CAMA Major Sedimentahon/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 III PROJECT INFORMATION 1 In the space provided below, stunmanze how stormwa ter will be treated Also attach a detailed narrative (one to two pages) describing stormwater management for the project Subdivision is low density overall, with roadside swales and engineered infiltration basins to treat the runoff from the pockets of higher density. 2 Stormwater runoff from this project drains to the h L)rm River basin 3 Total Project Area 215.27 acres /4 Project Built Upon Area 37.22AC �— 17.3 % 5 How many drainage areas does the project have? _ T1` J 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 SEE ATTACHED SPREADSHEET rurni SWU-101 Version 199 Page 2 of 4 BASIN INFORMATIONO 2 Basin I far atlan IS ra @ a Ba in �1) Receiving Stream Name Calabash River Receiving Stream Class SA Drainage Basin Area 143,749 Existing Impervious Area Proposed Impervious Area 92,912 % Impervious Area 65 Bas1llniar ma#on r©rains a easin7� Receiving Stream Name Calabash River Receiving Stream Class — SA Drainage Basin Area 84,507 Existing Impervious Area Proposed Impervious Area 58,197 % Impervious Area 69 Receiving Stream Name Calabash River Receiving Stream Class SA Drainage Basin Area 148,540 Existing Impervious Area , Proposed Impervious Area 72,745 % Impervious Area 49 On -site Buildings 21,780 On -site Streets 17,424 On -site Parkinr� " , On -site Sidewalks 4,356 Other On -site 29.185 Total I E = 72,745 1 BASIN INFORMATION 0 a anDIT MM tlon Enure Slte' Receiving Stream Name Calabash River Receiving Stream Class SA Drainage Basin Area 9,377,161 Existing Impervious Area' 97,644 Proposed Impervious Area 1,523,488 % Impervious Area 17 M _ r I-0urs 5u[lac_� Area Enure Slta On -site Buildings 171,520 On -site Streets 448,433 On -site Parking 192,515 On -site Sidewalks 133,020 Other On -site"" 578,000 Off -site Total E = 1,523,488 Existing golf cart paths " Patio and single family homes 7 How was the off -site impervious area listed above derived? N/A IV DEED RESTRICTIONS AND PROTECTIVE COVENANTS The following italicized deed restrictions and protective covenants are required to be recorded for all subdivisions, outparcels and future development prior to the sale of any lot If lot sizes vary significantly, a table listing each lot number, size and the allowable built -upon area for each lot must be provided as an attachment 1 The following covenants are intended to ensure ongoing compliance with state stormwater management permit number __SWS 000415 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 **see below 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 **Patio Home lots — 4000SF, Single Family logs — 6000SF 3 Swales shall not be filled in, piped, or altered except as necessary to provide driveway crossings 4 Built -upon area in excess of the permitted amount requires a state stormwater management permit modification prior to construction 5 All permitted runoff from outparcels or future development shall be directed into the permitted stormwater control system These connections to the stormwater control system shall be performed in a manner that maintains the integrity and performance of the system as permitted By your signature below, you certify that the recorded deed restrictions and protective covenants for this project shall include all the applicable items required above, that the covenants will be binding on all parties and persons claiming under them, that they will run with the land, that the required covenants cannot be changed or deleted without concurrence from the State, and that they will be recorded prior to the sale of any lot V SUPPLEMENT FORMS The applicable state stormwater management permit supplement form(s) listed below must be submitted for each BMP specified for this project Contact the Stormwater and General Permits Unit at (919) 733-5083 for the status and availability of these forms Form SWU-102 Wet Detention Basin Supplement Form SWU-103 Infiltration Basin Supplement Form SWU-104 Low Density Supplement Form SWU-105 Curb Outlet System Supplement Form SWU-106 Off -Site System Supplement Form SWU-107 Underground Infiltration Trench Supplement Form SWU-108 Neuse River Basin Supplement Form SWU-109 Innovative Best Management Practice Supplement Form SWU-101 Version 3 99 Page 3 of 4 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 1 Please indicate that you have provided the following required information by initialing in the space provided next to each item Initials • Original and one copy of the Stormwater Management Permit Application Form DLS • One copy of the applicable Supplement Form(s) for each BMP DLS • Perrrut application processing fee of $420 (payable to NCDENR) NIA* • Detailed narrative description of Stormwater treatment/management DI1S • Two copies of plans and specifications, including DLS -Development/Project name *New forms for resubmission - 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 - 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) 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 Designated agent (individual or firm) Mailing Address City Raleigh P.O. Box 33068 Phone ( 919 ) 677-2000 VIII APPLICANT'S CERTIFICATION Harlan Britt/David Smith - Kimley-Horn & Associates State NC 7-ap 27636 Fax ( 919 ) 677-2050 I, (print or type name of person listed in General Information, item 2) �orj� L- - SA V--P,I T -_ 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 Date s4p, , 1p , ZO O t Form SWU-101 Version 3 99 Page 4 of 4 11 Permit No '5000415 (to be provided by D WQ) State of North Carolina Department of Environment and Natural Resources Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM LOW DENSITY SUPPLEMENT This form may be photocopied for use as an original A low density project is one that meets the appropriate criteria for built upon area and transports stormwater runoff primarily through vegetated conveyances Low density projects should not have a discrete stormwater collection system as defined by I5A NCAC 2H 1002(18) Low density requirements and density factors can be found in 15A NCAC 2H 1005 through 1007 I. PROJECT INFORMATION Project Name _&So rZ r L.N-r) N 3 Pc.- eckA a b4eA-po z' Contact Person 4A z,N,3 Fats,-rr Phone Number (9 ! °t ) &77 - Zo ay Number of Lots . 124 Allowable Built Upon Area Per Lot* �fr- -r-rac-" R— *If lot sizes are not uniform, attach a table indicating the number of lots, lot sizes and allowable built upon area for each lot The attachment must include the project name, phase, page numbers and provide area subtotals and totals -0 1?A rlti0 c- IDAC LOTS — 4poo 5v- it -or 44 o J L) sc= i i<o r II. BUILT UPON AREA See the Stormwater Management Permit Application for specific language that must be recorded in the deed restrictions for all subdivisions For uniform lot sizes, complete the following calculation in the space provided below where • SA Site Area - the total project area above Mean High Water Wetlands may be excluded when the development results in high density pockets • DF Density Factor - the appropriate percent built upon area divided by 100 • RA Road Area - the total impervious surface occupied by roadways • OA Other Area - the total area of impervious surfaces such as clubhouses, tennis courts, sidewalks, etc • No Lots - the total number of lots in the subdivision • BUAILot - the computed allowable built upon area for each lot including driveways and impervious surfaces located between the front lot line and the edge of pavement Form SWU-104 Rev 3 99 Page 1 of 2 5,,a $ o ov 415 (SA x DF) - RA - OA = BUA No Lots Lot Calculation � qr-rTAr-bke- III. REQUIRED ITEMS CHECKLIST Initial in the space provided to indicate that the following requirements have been met and supporting documentation is provided as necessary If the applicant has designated an agent on the Stormwater Management Permit Application Form, the agent may initial below Appt)qants Initials 1.'J160), a A 30 foot vegetative buffer is provided adjacent to surface waters Projects in the Neuse River basin may require additional buffers AA b Deed restriction language as required on form SWU-101 shall be recorded as a restrictive covenant A copy of the recorded document shall be provided to DWQ within 30 days of platting and prior to sale of any lots &Aa c Built upon area calculations are provided for the overall project and all lots A d Project conforms to low density requirements within the ORW AEC (if applicable) [15A NCAC 2H 1007(2)(b)] Form SWU-104 Rev 3 99 Page 2 of 2 Sw g, avo 4 t S 0 r OPEN SPACE LEGEND I TOTAL AREA 215 27 Ac OPEN SPACE REOUIRED 53 75 Ac OPEN SPACE PROVIDER 125 83 Ac OPEN SPACE (PROVIDED) I IMPERVIOUS AREA SUMMARY EXISTING CART PATHS 97,644 SF PROPOSED WALKS 133,020 SF ROADWAY 448, 433 SF PARKING (INCL DRIVES) 192,515 SF PATIO HOMES (83 x 4000 SF) 332,000 SF SINGLE FAMILY HOMES (41 x 6000 SF) 246.000 SF BUILDINGS 171,520 SF TOTAL IMP AREA = 1,621,132 SF (BUA) 37 22 AC IMP - 37.22 215.27 - 17.3% � � � m.� ; ')§&) � � � z � , .�.a,w � � �����EE22 � Z� � �� � /� ]#�/ � !@r0< } �%%������ƒ�/ ' z zz��� '.� � �,\�! j �� Permit No ` W 0 Ock9 416 (to be provided by DWO State of North Carolina Department of Environment and Natural Resources Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM INFILTRATION BASIN SUPPLEMENT This farm may be photocopied for use as an original DWO Stormwater Management Plan Review A complete stormwater management plan submittal includes a stormwater management permit application, 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 Rv;.5c,7—r lAaAa P-- Contact Person A&7-L-R,o 'Esz..-rr Phone Number ( q, iq ) Ca"7 7 - This worksheet applies to Basin No 41 _. in Drainage Area F- F (as +dented on plans) (from Form 5WU 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) Soils Report Summary Soil Type Infiltration Rate t. 16 i r or cf/hr/sf (circle appropriate units) SHWT Elevation fmsl (Seasonal High Water Table elevation) Basin Design Parameters Design Storm 1 , 6 inch U 5 inch event for SA waters, 1 inch event for others) Design Volume G, 09 1 c f Drawdown Time O. 275 _ days Basin Dimensions Basin Size 50 -ft x 10-3 ft 1 -1 19 —sq ft (bottom dimensions) Basin Volume Provided 04o c f Basin Elevations Bottom Elevation IZ. 5 fmsl Storage Elevation L4 fmsl Top Elevation 15_ fmsl Form SWU-103 Rev 3 99 Page 1 of 3 5,3 t6 000 4 L 5 I1I. 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 that 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 Attach justification if a requirement has not been met. Applicants Initials CAM a System is located 50 feet from class SA waters and 30 feet from other surface waters b System is located at least 100 feet from water supply wells c Bottom of system is at least 2 feet above the seasonal high water table d Bottom of the system is 3 feet above any bedrock or impervious soil horizon LO e System is not sited on or in fill material or DWQ approval has been obtained f 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 g Drainage area for the device is less than 5 acres h Soils have a minimum hydraulic conductivity of 0 52 inches per hour and soils report is attached i 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 j 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 �} N7 k All side slopes stabilized with vegetated cover are no steeper than 3 1 (H V) 1 A pretreatment device such as a catch basin, grease trap, filter strip, grassed Swale or sediment trap is provided m 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 n 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 p 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 restored) upon initial operation once the project is complete and the entire drainage area is stabilized Form SWU-103 Rev 3 99 Page 2 of 3 ,5,4 t3 IV. INFILTRATION BASIN OPERATION AND MAINTENANCE AGREEMENT 1 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 -excavating 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 onginal 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 3,15 _ - feet in the pretreatment unit, the sediment shall be removed from both the pretreatment unit and the inflltration basin. 5 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 N%AX4o_[.-_ 5AF4?-i7l_UI? oi_AoXLZO-42AL. Z�cQk OM19„rr-- CA&A-AL W,ia..-AMVo-J L'a vtr�9+J { Address 10166 Btrgc A Dyugf_ -sW CALAP rAg t1og-w C wz"as Za4- 0-7 Phone Signati Note The legally responsible party should not 6 a meo rs association unless more than 50% of the lots have been sold and a resident of the subdivision has been named the president toaA.41— a Notary Public for the State ofCounty of _?xlllr,&,f'1(' , do hereby certify that J)DnQld L S2�P-_ � personally appeared before me this Ito day of , )DO) , and acknowledge the due execution of the forgoing infiltration basin maintenance requirements Witness my hand and official seal, SEAL, My commission expires_ _ 3_ d 0 -.2 Up � _ Form SWU-103 Rev 3 99 Page 3 of 3 Permit No 5v-1 6 0004- t S (to be provided by DW) State of North Carolina 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 D)KQ_Storm_ water Management Plan Review A complete stormwater management plan submittal includes a stormwater management permit application, 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 R1&Sr>z-r LAbA,3 OCEA i-1 14 A Z&a,: ? Contact Person _ AAgj .rk,,) Zx, rr Phone Number ( q iq, ) (o "7 7 -- Zeu v. _ This worksheet applies to Basin No --tL Z in Drainage Area CD (as identified on plans) (from Form SWU 101) II. DESIGN INFORMATION - Attach supporting calculations/documentation The soils report must be based upon an actual field investigation and soil bonngs County soil maps are not an acceptable source of soils information All elevations shall be in feet mean sea level (fmsi) 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 Saa,C> q ! . b i or cf/hr/sf (circle appropriate units) g- fmsl (Seasonal High Water Table elevation) I . inch (1 5 inch event for SA waters, 1 inch event for others) io,aVla cf O 56 days 50 ft x to S ft = Z 5 O sq ft (bottom dimensions) 13, 4&4- c f a fmsl 4 0 fmsl v t fmsl Form 5WU-103 Rev 3 99 Page 1 of 3 6,0 B doa 41 BA.;%Z 4 Z 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 that 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 Attach justification if a requirement has not been met. Apocants Initials /.J-A A a System is located 50 feet from class SA waters and 30 feet from other surface waters b System is located at least 100 feet from water supply wells c Bottom of system is at least 2 feet above the seasonal high water table 91 d Bottom of the system is 3 feet above any bedrock or impervious soil horizon e System is not sited on or in fill material or DWQ approval has been obtained f 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 g Drainage area for the device is less than 5 acres h Soils have a minimum hydraulic conductivity of 0 52 inches per hour and soils report is attached i 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 k All side slopes stabilized with vegetated cover are no steeper than 3 1 (H V) /lwJ 1 A pretreatment device such as a catch basin, grease trap, filter strip, grassed Swale or sediment trap is provided m 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 n 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 p 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 restored) upon initial operation once the project is complete and the entire drainage area is stabilized Form SWU-103 Rev 3 99 Page 2 of 3 .6,,j 6 4 l5 IV. INFILTRATION BASIN OPERATION AND MAINTENANCE AGREEMENT 1 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 -excavating 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 onginal 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 S 5 feet in the pretreatment unit, the sediment shall be removed from both the pretreatment unit and the infiltration basin. 5 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 DQ1A1,_V L Si6atr. 4`'t or- lJ0i2izQ.3-KAL iJeA&,LpPe4tG,-3r- CADa.JE cj e.1_) Era;50^S C&A PA^) Y Address _ Phone Signature Note The legally responsible party should not N14-1 resident of the subdivision has been named the association unless more than 50% of the lots have been sold and a I. I'Nyu u I N OA, , a Notary Public for the State of M . C- , County of L3U1 A/)LA),U , do hereby certify that _ Onnai I . Sal-A-4 Jk personally appeared before me this day of ?mt , and acknowledge the due execution of the forgoing infiltration basin maintenance requirements Witness my hand and official seal, SEAL My comrmssion expires 3 - 2U — O mot` Form SWU-103 Rev 3 99 Page 3 of 3 Permit No 5W $ Ocx34t5 (to be provided by DWQ) State of North Carolina Department of Environment and Natural Resources Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM INFILTRATION BASIN SUPPLEMENT This form may be photocopted for use as an original DWQ Stormwater Management Plan Review A complete stormwater management plan submittal includes a stormwater management permit application, 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 Rr,-Sour L,A1Dbr) . — C%-EA.) 9MZZoU& Contact Person Phone Number Q 19 &-7 — ZocjO This worksheet applies to Basin No in Drainage Area G G (as ideniifed on plans) (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) Soils Report Summary Soil Type Infiltration Rate 1. 8 in/hr r cf/hr/sf (circle appropriate units) SHWT Elevation fmsl (Seasonal High Water Table elevation) Basin Design Parameters Design Storm . 5 inch (1 S inch event for SA waters, 1 inch event for others) Design Volume Ci, ut c f Drawdown Time O. (o3 days Basin Dimensions Basin Size ft x 38 ft = ¢ j,S� sq ft (bottom dimensions) Basin Volume Provided 101 0 9; c f Basin Elevations Bottom Elevation 27, fmsl Storage Elevation Z4 fmsl Top Elevation Z fmsl Form SWU-103 Rev 3 99 Page 1 of 3 S� 18 000 d-r 5 6 As, -A -EL 3 II1. 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 that 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 Attach justification if a requirement has not been met. Applicants Initials a System is located 50 feet from class SA waters and 30 feet from other surface waters b System is located at least 100 feet from water supply wells c Bottom of system is at least 2 feet above the seasonal high water table d Bottom of the system is 3 feet above any bedrock or impervious soil horizon e System is not sited on or in fill material or DWQ approval has been obtained f 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 g Drainage area for the device is less than 5 acres h Soils have a nummum hydraulic conductivity of 0 52 inches per hour and soils report is ^ !'(7� attached i 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 k All side slopes stabilized with vegetated cover are no steeper than 3 1 (H V) W i A pretreatment device such as a catch basin, grease trap, filter strip, grassed swale or sediment trap is provided m 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 C 11 I I 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) Flow distribution mechanism within the basin is provided A benchmark is provided to determine the sediment accumulation in the pretreatment device Runoff in excess of the design volume bypasses off-line systems (bypass detail provided) 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 Plans ensure that the installed system will meet design specifications (constructed or restored) upon initial operation once the project is complete and the entire drainage area is stabilized Form SWU-103 Rev 3 99 Page 2 of 3 50 8 0004(5 aPrsi.a 0- 3 IV. INFILTRATION BASIN OPERATION AND MAINTENANCE AGREEMENT I 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 -excavating 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 1- 2-5 feet in the pretreatment unit, the sediment shall be removed from both the pretreatment unit and the infiltration basin 5 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 'DbiaAtrD L. SA F P Lr, VV Or- kziza,Mai✓ D"rc. ?m,6,)T--L4D1W LO IL4a,"so.J -SPAT f Address 101 S -.4 U c., A Z Phone _ LC%4&N - 013'� i Date w: ({o , 20 0 l Signature Note The legally responsible party should not be omeo e s association unless more than 50% of the lots have been sold and a resident of the subdivision has been named the press ent 1, _ _ V&/jg_ t , a Notary Public for the State of n . C County of _bl (,M/Ql _J4_ do hereby certify that _D&Acj [S S cLbLL personally appeared before me this 1(I p day of JODI , and acknowledge the due execution of the forgoing infiltration basin maintenance requirements Witness my hand and official seal, SEAL My commission expires �J -Z O - CDT _ Form SWU-103 Rev 3 99 Page 3 of 3 Z�m LADANE WILLIAMSON COMPANY STORMWAi'ER April 17, 2000 p E C E I V E Ms. Linda Lewis, Environmental Engineer APR 192000 Division of Water Quality P R 0 J # S�GuB 4/57 127 Cardinal Drive Extension Wilmington, North Carolina 28405 Subject: Ocean Harbour Golf Links, Inc Signature Authority Dear Ms Lewis Please accept this letter as confirmation that Mr. Donald L. Safrit, Vice President for Horizontal Development, La Dane Williamson Company, LLC, has authority to sign the stormwater application form and associated attachments associated with the subject project. The proper entity for permit purposes is Ocean Harbour Golf Links, Inc. If you have any questions regarding this matter, please do not hesitate to contact Mr Safrit at (910)579-0733 or me at (212)586-0334. Sincerely, LaDane Williamson, President Ocean Harbour Golf Links, Inc PO Box 5070 • 0( can Isle Heath, North Carolina 28469 • Phone 910 579 7300 • Fax 910 579 8995 7 i0 14111 Ai enae 15th F I • Nei► fork Ne►� York 10019 • Phone 212 586 034 • 1 ax 212,186 02,10