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HomeMy WebLinkAboutSW8020637_CURRENT PERMIT_20030801STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO. SW DOC TYPECURRENT PERMIT APPROVED PLANS ❑ HISTORICAL FILE ❑ COMPLIANCE EVALUATION INSPECTION DOC DATE YYYYMMDD �F WArF9 Michael F. Easley, Governor p William G. Ross Jr., Secretary �O G North Carolina Department of Environment and Natural Resources Alan W. Klimek, P.E.,Director Division of Water Quality Coleen H. Sullins, Deputy Director Division of Water Quality August 1, 2003 Mr. Ken A. Chapman, Vice President Progress Point One, LLC 125 Scaleybark Road Charlotte, NC 28209 Subject: Permit No. SW8 020637 Modification Progress Point Master Plan High Density Subdivision Stormwater Project New Hanover County Dear Mr. Chapman: The Wilmington Regional Office received a complete modified Stormwater Management Permit Application for Progress Point Master Plan on July 30, 2003. 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 21-1.1000. We are forwarding Permit No. SW8 020637, dated August 1, 2003, for the construction of the project, Progress Point Master Plan. This permit shall be effective from the date of issuance until August 1, 2013, 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 thirty (30) days following receipt of this permit. This request'must be in the form of a written petition, conforming to Chapter 150B of the North Carolina General Statutes, and filed with the Office of Administrative Hearings, P.O. Drawer 27447, Raleigh, NC 27611- 7447. Unless such demands are made this permit shall be final and binding. If you have any questions, or need additional information concerning this matter, please contact Linda Lewis, or me at (910) 395-3900. Sincerely, Rick Shiver Water Quality Regional Supervisor RSS/:arl S:1WQSISTORMWATIPERMIT1020637.aug03 cc: Brian Michot, P.E. Tony Roberts, New Hanover County Inspections Beth E. Wetherill, New Hanover County Engineering Linda Lewis Wilmington Regional Office Central Files N. C. Division of Water Quality 127 Cardinal Drive Extension (910) 395-3900 Wilmington Regional office Wilmington, NC 28405 (910) 350-2004 Fax Customer Service 1 800 623-7748 NCDENR State Stormwater Management Systems Permit No. SW8 020637 Mod. 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 Progress Point One, LLC Progress Point Master Plan New Hanover County FOR THE construction, operation and maintenance of a wet detention pond and 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 August 1, 2013, and shall be subject to the following specified conditions and limitations: I. DESIGN STANDARDS This permit is effective only with respect to the nature and volume of stormwater described in the application and other supporting data. 2. This stormwater system has been approved for the management of stormwater runoff as described on page 3 of this permit, the Project Data Sheet. The subdivision is permitted for 5 lots, each allowed a maximum amount of built -upon area as described on Page 3 of this permit. 3. Approved plans, calculations and specifications for this project are incorporated by reference and are enforceable parts of the permit. 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. All overflows from the infiltration basin must be directed through a 30' vegetated filter. E State Stormwater Management Systems ' Permit No. SW8 020637 Mod DIVISION OF WATER QUALITY PROJECT DATA SHEET Project Name: Progress Point Master Plan Permit Number: SW8 020637 Location: New Hanover County Applicant: Mr. Ken A. Chapman, Vice President Mailing Address: Progress Point One, LLC ' 125 Scaleybark Road Charlotte, NC 28209 Application Date: November 27, 2002 Modified July 30, 2003 Name of Receiving Stream: Cape Fear / Bradley Creek Stream Index Number: 8-87-24-4-(2) Classification of Water Body: "SC #" Design Storm: 1.0" WET POND - INFILTRATION BASIN DA-A DA-B Drainage Area, acres: 7.71 4.64 Total Impervious Surfaces, ft2: 170,320 139,392 Lot 1 @30,693 ft2: 0 30,693 Lot 2 @64,164 ft2: 0 64,164 Lot 3 @100,581 � : 56,046 44,535 Lot 5 @48,065 ft : 48,065 0 Lot 6 @4p,913 ft2: 48,913 0 Offsite, ft : 17,296 0 Depth, feet: 6 2.37 Permanent Pool Elevation, FMSL: 23.5 Bottom @24 Permitted Surface Area, ft2: 9,794 2,636 @bottom Permitted Storage Volume, ft3: 14,236 11,329 Temporary Storage Elevation, FMSL: 24.42 26.37 Controlling Orifice. 1.5" O pipe OBypass @26.37 Type of Soil: n/a Leon and Murville Seasonal High Water Table Elevation: n/a 22 Expected Infiltration Rate: n/a 6" per hour Time to draw down: 4.2 days 3.1 hours OOverflows must be directed to a 30' vegetated filter. 3 State Stormwater Management Systems Permit No. SW8 020637 Mod, Il. SCHEDULE OF COMPLIANCE No homeowner/lot owner/developer shall fill in, alter, or pipe any drainage feature (such as swales) shown on the approved plans as part of the stormwater management system without submitting a revision to the permit and receiving approval from the Division. 2. The permittee is responsible for verifying that the proposed built -upon area for the entire lot does not exceed the allowable built -upon area. Once the lot 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. 3. If an Architectural Review Committee (ARC) is required to review plans for compliance with the BUA limit, the plans reviewed must include all proposed built -upon area. Any approvals given by the ARC do not relieve the lot owner of the responsibility to maintain compliance with the permitted BUA limit. 4. 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 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. g. Construction on any of the lots where ownership is retained by the permittee. 5. The Director may determine that other revisions to the project should require a modification to the permit. 6. 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. 7. 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. 8. During construction, erosion shall be kept to a minimum and any eroded areas of the system will be repaired immediately. 4 + State Stormwater Management Systems Permit No. SW8 020637 Mod. 9. 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. 10. Prior to the sale of any lot, deed restrictions must be recorded which limit the built -upon area per lot to the amount as shown on the Project Data Sheet, per Section I, Part 2. The recorded statements must follow the form: a. The following covenants are intended to ensure ongoing compliance with State Stormwater Management Permit Number SW8 020637, as issued by the Division of Water Quality under NCAC 2H.1000. b. The State of North Carolina is made a beneficiary of these covenants to the extent necessary to maintain compliance with the Stormwater Management Permit. C. These covenants are to run with the land and be binding on all persons and parties claiming under them. d. The covenants pertaining to stormwater may not be altered or rescinded without the express written consent of the State of North Carolina, Division of Water Quality. e. Alteration of the drainage as shown on the approved plans may not take place without the concurrence of the Division of Water Quality. f. The maximum built -upon area per lot is as follows: Lot 1 @30,693 ft2; Lot 2 @64,164 ft2; Lot 3 @100,581 ft2; Lot 5 @48,065 ft2; and Lot 6 @48,913 W. The offsite built -upon area from Allen's Lane is limited to 17,296 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, coquina and parking areas, but does not include raised, open wood decking, or the water surface of swimming pools. g. All runoff on the lot must drain into the approved and permitted stormwater management system. h. Each lot whose ownership is not retained by the permittee, shall submit a separate offsite stormwater permit application to the Division of Water Quality and receive a permit prior to construction. 11. A copy of the recorded deed restrictions must be submitted to the Division within 30 days of the date of recording the plat, and prior to selling lots. The recorded copy must bear the signature of the Permittee, the deed book number and page, and stamp/signature of the Register of Deeds. 12. The permittee shall make all necessary contracts and arrangements with owners of the outparcels such that the cost of maintaining the Stormwater system is covered. 13. 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. 5 State Stormwater Management System Permit No, SW8 020637 Mod. 14. Decorative spray fountains will not be allowed in the stormwater treatment system 15. Lot 4 is an existing electrical substation that will remain, and its runoff will continue to drain into the ditch that surrounds it. It has not been included in the drainage area of either of the proposed stormwater facilities. 16. Permanent seeding requirements for the stormwater control must follow the guidelines established in the North Carolina Erosion and Sediment Control Planning and Design Manual. I 17. The permittee shall at all times provide the operation and maintenance necessary to assure that all components of the permitted stormwater system function 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, vegetated shelf and filter. d. Immediate repair of eroded areas. e. Maintenance of side slopes at 3:1 in accordance with approved plans and specifications. f. Debris removal and unclogging of infiltration pond, structures, orifice, bypass, catch basins, piping and vegetated filter. g. Access to all components of the system must be available at all times. 18. 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. 19. Prior to transfer of ownership, the stormwater systems must be inspected by DWQ personnel, and determined to be in compliance with all permit conditions. Any items not in compliance must be repaired;or replaced to design condition prior to the transfer. Records of maintenance activities performed to date will be required. 20. 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. 21. Built upon area includes, but is not limited to, structures, asphalt, concrete, gravel, brick, stone, slate, coquina and parking areas, but does not include raised, open wood decking, or the water surface of swimming pools. III. GENERAL CONDITIONS This permit is not transferable except after notice to and approval by the Director. In the event there is a desire for the facilities to change ownership, or there is a name change of the Permittee, a "Name/Ownership Change Form" must be submitted to the Division of Water Quality accompanied by appropriate documentation from the parties involved, including as may be required, but not limited to, a deed of trust, recorded deed restrictions, Designer's Certification and a signed Operation and Maintenance plan. The project must be in good standing with DWQ. The approval of this request will be considered on its merits and may or may not be approved. I State Stormwater Management Systems Permit No. SW8 020637 Mod. 2. The permittee is responsible for compliance with the terms and conditions of this permit until such time as the State approves an official transfer request. 3. 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. 4. The issuance of this permit does not preclude the Permittee from complying with any and all statutes, rules, regulations, or ordinances which may be imposed by other government agencies {local, state, and federal} which have jurisdiction. 5. 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 stormwate"r management systems. 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. Permittee grants permission to staff of the DWQ to access the property for the purposes of inspecting the stormwater facilities during normal business hours. 8. The permittee shall notify the Division of any name, ownership or mailing address changes within 30 days. - 9. 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. Permit issued this the 1st day of August, 2003. NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION Alan W. Klimek, P.E., Director Division of Water Quality By Authority of the Environmental Management Commission Permit Number SW8 020637 7 Progress Point Master Plan Stormwater Permit No. SW8 020637 New Hanover County Designer's Certification State Stormwater Management Systems Permit No. SW8 020637 Mod. Page-1 of 2 I, , as a duly registered in the State of North Carolina, having been authorized to observe (period icaIlylweeklylfuII 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 are a part of this Certification. Noted deviations from approved plans and specifications: Signature Registration Number Date SEAL I State Stormwater Management Systems Permit No. SW8 020637 Mod. Certification Requirements: Page 2 of 2 1. The drainage area to the system contains approximately the permitted acreage. 2. The drainage area to the system contains no more than the permitted amount of built -upon area. 3. All the built -upon area associated with the project is graded such that the runoff drains to the system. 4. The outlet/bypass structure elevations are per the approved plan. 5. The outlet structure is located per the approved plans. 6. Trash rack is provided on the outlet/bypass structure. 7. All slopes are grassed with permanent vegetation. 8. Vegetated slopes are no steeper than 3:1. 9. The inlets are located per the approved plans and do not cause short- circuiting of the system. 10. The permitted amounts of surface area and/or volume have been provided. 11. Required drawdown devices are correctly sized per the approved plans. 12. All required design depths are provided. 13. All required parts of the system are provided, such as a vegetated shelf, a forebay, and the vegetated filter. 14. The permitted system dimensions are provided, per the approved plans. cc: NCDENR-DWQ Regional Office Tony Roberts, New Hanover County Building Inspections 9 Michael F. Easley, Governor William G. Ross, Jr., Secretary North Carolina Department of Environment and Natural Resources November 27, 2002 Mr. Ken A. Chapman, Vice President Progress Point One, LLC 125 Scaleybark Road Charlotte, NC 28209 Subject: Dear Mr. Chapman: Alan W. Klimek, P.E., Director Division of Water Quality Wilmington Regional Office Permit No. SW8 020637 Progress Point Master Plan High Density Subdivision Stormwater Project -- " -New Hanover County The Wilmington Regional Office received a complete Stormwater Management Permit Application for Progress Point Master Plan on November 25, 2002. 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 020637, dated November 27, 2002, for the construction of the project, Progress Point Master Plan. This permit shall be effective from the date of issuance until November 27, 2012, 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 thirty (30) days following receipt of this permit. This request must be in the form of a written petition, conforming to Chapter 150B of the North Carolina General Statutes, and filed with the Office of Administrative Hearings, P.O: Drawer 27447, Raleigh, NC 27611-7447. Unless such demands are made this permit shall be final and binding. If you have any questions, or need additional information concerning this matter, please contact . - - ' Linda Lewis, or -me at (910) 395-3900. Sincerely, Rick Shiver Water Quality Regional Supervisor RSS/:arl S:1WQSISTORMWATIPERMIT1020637.NOV cc: Brian Michot, P.E. Tony Roberts, New Hanover County Inspections Beth E. Wetherill, New Hanover County Engineering Linda Lewis Wilmington Regional Office Central Files X*A NCDEN'R N.C. Division of Water. Quality 127 Cardinal Drive Extension Wilmington, N.C. 28405 (910) 395-3900 Fax (910) 350-2004 Customer Service 800-623-7748 State Stormwater Management Systems _ Permit No. SW8 020637 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 Progress Point One, LLC Progress Point Master Plan New Hanover County FOR THE construction, operation and maintenance of a wet detention pond and 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 November 27, 2012 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 subdivision is permitted for 5 lots, each allowed a maximum amount of built -upon area as described on Page,3 of this permit. Lot 4 is an existing substation that will remain, and its runoff will continue to drain into the ditch that surrounds it, and is not included in this permit. Lot 3 straddles the drainage areas for the stormwater facilities. A maximum of 56,046 ftz of Lot 3 may drain to the wet pond and a maximum of 44,535 ftz of Lot 3 may drain to the infiltration basin. 3. Approved plans, calculations and specifications for this project are incorporated by reference and are enforceable parts of the permit. 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. All overflows from the infiltration basin must be directed through a 30' vegetated filter. 2 - State St6rmwater Management Systems Permit No. SW8 020637 DIVISION OF WATER QUALITY PROJECT DATA SHEET Project Name: Progress Point Master Plan Permit Number: SW8 020637 Location: New Hanover County Applicant: Mr. Ken A. Chapman, Vice Presdient Mailing Address: Progress Point One, LLC 125 Scaleybark Road Charlotte, NC 28209 Application Date:_ November 25, 2002 Name of Receiving Stream 1 Index #: Cape Fear / Bradley Creek / 18-87-24-4-(2) Classification of Water Body: "SC #11 Design Storm: 1.0" WET POND INFILTRATION BASIN (DA-A) (DA-B) Depth, feet: 6 1.4 Permanent Pool Elevation, FMSL: 23.5 Bottom @24 Drainage Area, acres: 7.71 4.48 Total Impervious Surfaces, ftz: 170,320 118,484 Lot 1 @10,890 ftz: --- 10,890 Lot 2 @63,059 ft2: --- 63,059 Lot 3 @100,581 ft2: 56,046 44,535 Lot 5 @48,065 ftz: 48,065 --- Lot 6 @48,913 ftz: 48,913 --- Offsite, ft2: 17,296 --- Permitted Surface Area, ft2: 9,794 8,921 @bottom Permitted Storage Volume, ft3: 14,236 14,044 Temporary Storage Elevation, FMSL: 24.42 25.4 Controlling Orifice: 1.5" cp pipe Bypass @25.4 Type of Soil: --- Leon and Murville Seasonal High Water Table Elevation: -- 22 Expected Infiltration Rate: --- 6" per hour Time to draw down: 4.2 days 3.1 hours 3 State Stormwater Management Systems Permit No. SW8 020637 II. SCHEDULE OF COMPLIANCE No homeowner/lot owner/developer shall fill in, alter, or pipe any drainage feature (such as swales) shown on the approved plans as part of the stormwater management system without submitting a revision to the permit and receiving approval from the Division. 2. The permittee is responsible for verifying that the proposed built -upon area for the entire lot does not exceed the allowable built -upon area. Once the lot transfer is complete, the built -upon area may not be revised without approval from the permiftee and the Division of Water Quality, and responsibility for meeting the built -upon area limit is transferred to the individual property owner. 3. If an Architectural Review Committee (ARC) is required to review plans for compliance with the BUA limit, the plans reviewed must include all proposed built -upon area. Any approvals given by the ARC do not relieve the lot owner of the responsibility to maintain compliance with the permitted BUA limit. - _ - 4. 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 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. The Director may determine that other revisions to the project should require a modification to the permit. 6. 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. T.- 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. 8. During construction, erosion shall be kept to a minimum and any eroded areas of the system will be repaired immediately. 9. 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. 10. 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. 4 -. - - " State Stormwater Management Systems Permit No. SW8 020637 11. Decorative spray fountains will not be allowed in the stormwater treatment system 12. The permittee shall at all times provide the operation and maintenance necessary to assure that all components of the permitted stormwater system function 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 structures, orifice, catch basins and piping. g. Access to all components of the system must be available at all times. 13. 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. 14. Prior to the sale of any lot, deed restrictions must be recorded which limit the built -upon area per lot to the amount as shown on the Project Data Sheet, per Section I, Part 2. The recorded statements must follow the form: a. The following covenants are intended to ensure ongoing compliance with State Stormwater Management Permit Number SW8 020637, as issued by the Division of Water Quality under NCAC 2H.1000. b. The State of North Carolina is made a beneficiary of these covenants to the extent necessary to maintain compliance with the Stormwater Management Permit. C. These covenants are to run with the land and be binding on all persons and parties claiming under them. d. The covenants pertaining to stormwater may not be altered or rescinded without the express written consent of the State of North Carolina, Division of Water Quality. e. Alteration of the drainage as shown on the approved plans may not take place without the concurrence of the Division of Water Quality. f. The maximum built -upon area per lot is as follows: Lot 1 @10,890 ft2; Lot 2 @63,059 ft2; Lot 3 @100,581 ft2; Lot 5 @48,065 ft2- and Lot 6 @48,913 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 Iot Iine and the edge of the pavement. Built upon area includes, but is not limited to, structures, asphalt, concrete, gravel, brick, stone, slate, coquina and parking areas, but does not include raised, open wood decking, or the water surface of swimming pools. g. All runoff on the lot must drain into the approved and permitted system. This may be accomplished through providing roof drain gutters which drain to the street, grading the lot to drain toward the street, or grading perimeter swales and directing them into the pond or street. Lots that naturally drain into the system are not required to provide these measures. h. Each lot whose ownership is not retained by the permittee, shall submit a separate stormwater permit application to the Division of Water Quality and receive a permit prior to construction. [1 P. - State Stormwater Management Systems Permit No. SW8 020637 15. Permanent seeding requirements for the stormwater control must follow the guidelines established in the North Carolina Erosion and Sediment Control Planning and Design Manual. 16. Prior to transfer of the permit, the pond must be inspected by DWQ personnel, and determined to be in compliance with all permit conditions. Any items not in compliance must be repaired or replaced to design condition prior to the transfer. Records of maintenance activities performed to date will be required. 17. A copy of the recorded deed restrictions must be submitted to the Division within 30 days of the date of recording the plat, and prior to selling lots. The recorded copy must bear the signature of the Permittee, the deed book number and page, and stamp/signature of the Register of Deeds. 18. 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. - - - : 19. Built upon area includes, but is not limited to, structures, asphalt, concrete, gravel, brick, stone, slate, coquina and parking areas, but does not include raised, open wood decking, or the water surface of swimming pools. III. GENERAL CONDITIONS 1. This permit is not transferable except after notice to and approval by the Director. In the event there is a desire for the facilities to change ownership, or there is a name change of the Permittee, a "Name/Ownership Change Form" must be submitted to the Division of Water Quality accompanied by appropriate documentation from the parties involved, including as may be required, but not limited to, a deed of trust, recorded deed restrictions, Designer's Certification and a signed Operation and Maintenance plan. The project must be in good standing with DWQ. The approval of this request will be considered on its merits and may or may not be approved. 2. The permittee is responsible for compliance with the terms and conditions of this permit until such time as the State approves an official transfer request. 3. 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. 4. The issuance of this permit does not preclude the Permittee from complying with any and all statutes, rules, regulations, or ordinances which may be imposed by other government agencies (local, state, and federal) which have jurisdiction. 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. 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. Permittee grants permission to staff of the DWQ to access the property for the purposes of inspecting the stormwater facilities during normal business hours. 2 - State Storrnwater Management Systems Permit No. SW8 020637 8. The permittee shall notify the Division of any name, ownership or mailing address changes within 30 days. 9. 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. Permit issued this the 27th day of November, 2002. NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION Alan W. Klimek, P.E., Director Division of Water Quality By Authority of the Environmental Management Commission Permit Number SW$ 020637 7 Progress Point Master Plan Storm%vater Permit No. SW8 020637 New Hanover County Designer's Certification State Stonnwater Manage -Meat Systems Permit No. SW8 020637 Page 1 of 2 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, (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 are a part of this Certification Noted deviations from approved plans and specifications: Signature Registration Number Date SEAL State Stormwater Management Systems Permit No. SWS 020637 -Certification Requirements: Page 2 of 2 1. The drainage area to the system contains approximately the permitted acreage. 2. The drainage area to the system contains no more than the permitted amount of built -upon area. 3. All the built -upon area associated with the project is graded such that the runoff drains to the system. 4. The outlet/bypass structure elevations are per the approved plan. 5. The outlet structure is located per the approved plans. --6. - Trash rack is provided on the outlet/bypass structure. 7. All slopes are grassed with permanent vegetation. 8. Vegetated slopes are no steeper than 3:1. 9. The inlets are located per the approved plans and do not cause short-circuiting of the system. 10. The permitted amounts of surface area and/or volume have been provided. H. 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, a forebay, and the vegetated filter. 14. The overall dimensions of the system, as shown on the approved plans, are provided. cc: NCDENR-DWQ Regional Office Tony Roberts, New Hanover County Building Inspections i 9 OF Mr. Ken Chapman, Vice President Progress Point One, LLC 125 Scaleybark Road Charlotte, NC 28209 Dear Mr. Chapman: Michael F. Easley, Governor William G. Ross, Jr., Secretary North Carolina Department of Environment and Natural Resources Alan W. Klimek, P.E., Director Division of Water Quality Wilmington Regional Office August 22, 2002 Subject: REQUEST FORADDITIONAL INFORMATION Stormwater Project No. SW8 020637 Progress Point Master Plan New Hanover County The Wilmington Regional Office received a Stormwater Management Permit Application for Progress Point Master Plan on June 28, 2002. A preliminary review of that information has determined that the application is not complete. The following information is needed to continue the stormwater review: k/ 1. Per a site visit conducted on Friday, August 16, 2002, the regional soils scientist determined that the seasonal high water table for Basin A is too high. Please either raise the bottom elevation to 25, or revise the application to a wet pond submittal. J2. Since you do not know for sure how the lots will develop, you must include all of the property area of the lots in the drainage area. Please revise and provide a revised drainage area delineation map. (see enclosed map) 3. If the drainage areas change as a result of #2 above, please revise the calculations to account for the increased drainage area. 4. The storage elevations and volumes reported on the supplements must correspond to the bypass weir elevations shown in the flow control structure details on sheet C4. PIease either increase the weir elevations to 26, or reduce the storage elevations reported on the supplement to 25.35 and 25.40 respectively. 5. Please show the required elevations, inverts and widths specific to each basin on the vegetated filter detail. Please also specify the type of flow spreader mechanism, i.e., a half round"cp pipe, a concrete box, etc. 6. The outlet from flow control structure #1 to the vegetated filter appears to flow over the weir without going into a pipe. Please make this clear on a separate vegetated filter detail, since the current detail shows only a pipe outlet. J7. Please make it clear on the flow structure details which side of the box has a \ Q� grated top and which has a solid top. The entire top of Basin A can be grated, but for Basin B, only the side where all the come into the box can be The pipes grated. side that goes to the bypass needs to be a solid top. NCDENR N.C. Division of Water Quality 127 Cardinal Drive Extension Wilmington, N.C. 28405 (910) 395-3900 Fax (910) 350-2004 Customer Service 800-623-7748 Mr. Chapman August 22, 2002 Stormwater Project No. SW8 020637 Please note that this request for additional information is in response to a preliminary review. The requested information should be received by this Office prior to September 22, 2002, or the application will be returned as incomplete. The return of a project will necessitate resubmittal of all required items, including the application fee. If you need additional time to submit the information, please mail or fax your request for a time extension to the Division at the address and fax number at the bottom of this letter. The request must indicate the date by which you expect to submit the required information. The Division is allowed 90 days from the receipt of a completed application to issue the permit. The construction of any impervious surfaces, other than a construction entrance under an approved Sedimentation Erosion Control Plan, is a violation of NCGS 143-215.1 and is subject to enforcement action pursuant to NCGS 143-215.6A. Please reference the State assigned project number on all correspondence. Any original documents that need to be revised have been sent to the engineer or agent. All original documents must be returned or new originals must be provided. Copies are not acceptable. If you have any questions concerning this matter please feel free to call me at (910) 395-3900. Sincerely, Linda Lewis Environmental Engineer RSSlarl: S:1WQSISTORMWATIADDINFO120021020637-2.AUG cc: Linda Lewis Brian Michot, P.E. Permit No.19a1-L) (, 37 (to be provided by D vo State of North Carolina Department of Environment and Natural Resources Division of Water Quality STORIvIWATER MANAGEMENT PERMIT APPLICATION FORM INFILTRATION BASIN SUPPLEMENT This form tnay be photocopied for use as an original DWO Stormwater Managemeni_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: Progress. Point Master Plan Contact Person: Brian J. Michot Phone Number: ( 919 ) 678-4132 This worksheet applies to: Basin No. A in Drainage Area 1 (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 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 Le and Mn Infiltration Rate 6.0 in/hr or cf/hr/sf (circle appropriate units) SHWT Elevation 21 .5 _ fmsl (Seasonal Nigh Water Table elevation) Basin Design Parameters Design Storm 1 _ inch (1.5 inch event for SA waters, 1 inch event for others) Design Volume _ 13,573 c.f. Drawdown Time 0.245 days Basin Dimensions Basin Size Basin Volume Provided Basin Elevations Bottom Elevation Storage Elevation Top Elevation 105 ft. x 153.2 ft. = 16085 47 , 205_ _ c.f. 23.5 fmsl 26 fmsl 27 fmsl q. ft. (bottom dimensions) Forni SWU-103 Rev 3.99 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 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. T. 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. 'G 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. *Proposs0 6rszM0-,r TO B6 2GeOrLvGip 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 1.0 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. k. All side slopes stabilized with vegetated cover are no steeper than 3:1 (H:V). 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. G 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. FoRn SWU-103 Rev 3.99 Page 2 of 3 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.e. 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 0.625 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: tt A Address: aS •_mil euio ems' Q-� c�ttat"F� �- ��i�`�.., Phone: .s 61 - ,2 3SC Date: Z. Signature: %f Note: The legally responsible parry should not be a homeowners association unless more than 507a of the lots have been sold and a resident of the subdivision has been named the president. I, Fit ,l1WC- J 14-7 . Cio 7 1-7 a Notary Public for the State of ��L �r�t , Counry of t9 cGCz( do hereby certify that /-6!2, A Cha,,"]4 h i personally appeared before me this day of Ju H e , -?oe-t_ , and acknowledge the due execution of the forgoing infiltration basin maintenance requirements. Witness my hand and official seal, SEAL. My commission expires_ L-1 , Form 5WU-103 Rev 3.99 Page 3 of 3 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): Low Density g High Density Redevelop General Permit Other 4. Additional Project Requirements (check applicable blanks): --LAMA Major I 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. III. 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, Storm water runoff will be collected by a storm crater system and conveyed to one of two infiltration basins. 2. Stormwater runoff from this project drains to the Cape Fear River basin. 3. Total Project Area: 11.83 acres 4. Project Built Upon Area: 89 % S.• How many drainage areas does the project have? 2 6: Corpplete 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. .+�-.. ::r....c:.c.: —y; asin fafoana anf ` ��'?`fD.rarnage ""ro:�tE`-.:�•4�:.-t:�-,;s...ti..,...,.' ',4 r�.�+.-+• :��w.+y 4reg�I� y:..xsa..-:�Yi`:-^ .w-rr_ �5I3inage~Area�2 s .�3C�.•^.�-' Receiving Stream Name Bradley. Creek Bradley Creek Receiving Stream Class Sc Sc Drainage Area 4.40 ac (191,665 sf) 3.04 ac (132,423 of) Existing Impervious` Area 1.25 ac 54,395 sf 2.13 ac 166,637 sf Proposed Impervious "Area 3.91 ac (170,320 sf) 2.72 ac (118,484 sf) % Impervious* Area (total) 89 89% mpe ous:•uFfaceArea� ti.., ;� Qrasiiage_A�ze�X ' kw' ::x r.�,f .. y , ;DFaiiiager ea' f� r' _.,i. On -site Buildings 0.95 ac (41,382 sf) 0.73 ac (31,939 sf On -site Streets N/A -• N/A On -site Parking 2.24 ac (97,703 sf) 1.70 ac (74,170 sf) On -site Sidewalks 0.32 ac (13,939 sf) _ 0.29 ac (12,375 sf) Other on -site N/A N/A Off -site 0.40 ac (17,296 sf) N/A Total: 3.91 ac (170,320 sf) Total: 2.72 ac (118,484 of) Impervious area is defined as the built upon area including, but not limited to. buildings, roads, parking areas, sidewalks, gravel areas, etc. Form SWU-101 Version 3.99 Page 2 of 4 Permit No..`� (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 pirolocopied 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 : Progress Point Master Plan Contact Person: Brian J. Michot Phone Number: (919 ) 678-4132 This worksheet applies to: Basin No. B in Drainage Area 2 (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 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 Le and Mn Infiltration Rate 6.0 in/hr or eflltrlsf (circle appropriate units) SHWT Elevation 22.0 fmsi (Seasonal Nigh Water Table elevation) Basin Design Parameters Design Storm 1 inch (1.5 inch event far SA waters, I inch evens for others) Design Volume 9,438 c.f. Drawdown Time 0. 19 days Basin Dimensions Basin Size Basin Volume Provided Basin Elevations Bottom Elevation Storage Elevation Top Elevation 160 ft. X 5 5.7 6 ft. - 8921 sq. f t. (botront dimensions) 20- 682 _c.f. 24 fmsl 26 fmsl 27 fmsi Farm SWU-103 Rev 3.99 Page 1 of 3 ------------ ........ ..... ............. I NOTE- —O 5 -%- AS PRVPO= I" P..coL an-m ­0 BEAR s i pRopowD pmC m OE Pwvm IIPM ocupLEpou O 3le01N9C11 PLAT. - ALL PNM.WC AM MES 9 AU HAVE MRt Amo W = MAP NQT;7- ALL Ea5».c aorg AR A Lu 9.1R,cy PRcp-F-ED er. L.4AJ,.K= �ATUJ Pk CA, 27 mqwy. 2002 V�nZJ:3>. CAAMPA POq ANO LaT CL MY . PRELIMINARY NOT FOR CONSTRUCTION iiweoat c­ Rh au jl;YZN C2 I ;, :._. -° , ': r:_ OEF[CE.,USE ON1;Y •' Date Received Fee Paid Permit Number a o 0 da o (0 3 / State of North Carolina Department of Environment and Natural Resources Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM This form may be photocopied for use as an original I. GENERAL INFORMATION 1. Applicants name (specify the name of the corporation, individual, etc, who owns the project): Progress Point one, LLC 2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance): Ken A. Chapman Vice President 3. Mailing Address for person listed in itern 2 above: 125 Scaleybark Road City: Charlotte Telephone Number: ( 704 ) 561-5238 State: NC Zip: 28209 4. Project Name (subdivision, facility, or establishment name - should be consistent with project name on plans, specifications, letters, operation and maintenance agreements, etc.): Progress Point Master Plan S. Location of Project (street address): SE quadrant of Eastwood Road and Mil.itary Cutoff Road City: Wilmington ,. _.. _ County: New Hanover 6. 'Directions to project (from nearest major intersection): SE quadrant of Eastwood Road and Military Cutoff Road 7. Latitude: 340 13' 38" N Longitude: 77Q 49' 47" w of project 8. Contact person who can answer questions about the project: Name: Brian J. Michot Telephone Number: 919 ) 678-4132 II. PERMIT INFORMATION: 1. Specify whether project is (check one): New Renewal X 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 SW 8 020637 and its issue date (if known) 11 / 27 / 2002 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 . Stormwater runoff will be collected by a stormwater system and conveyed to one of two basins. Drainage area "A" drains to a wet detention basin; drainage area "B" drains to an infiltration basin. 2. Stormwater runoff from this project drains to the Cape Fear River basin. 3. Total Project Area: 12.35 acres 4. Project Built Upon Area 5. I -low many drainage areas does the project have? 2 57.6% % 6. Complete the following information for each drainage area. If there are more than two drainage areas in the project, attach an additional sheet with the information for each area provided in the same format as below. "A" (Wet Pond) "B" (Infiltration Pond) Basin Information Drainage Area 1, Drainage Area 2. Receiving Stream Name Bradle Creek Bradley Creek Receiving Stream Class SC SC Drainage Area 7.71 ac (335,858 sf) 4.64 ac (202,118 sf) Existing Impervious` Area 1.25 ac (54,395 sf) 2.13 ac (166, 637 sf) Proposed Impervionus'Area 3.91 ac (170, 320 sf) 3.20 ac (139, 392 sf) Impervious` Area (total) 51% 69% Impervious* Surface Area Drainage Area 1 Drainage Area 2 On -site Buildings 0.95 ac (41,382 sf) 0.79 ac (32, 620.47 sf) On -site Streets N/A N/A On -site Parking 2.24 ac (97,703 sf) 2.14 ac (93, 242.64 sf) On -site Sidewalks 0.32 ac (13, 939 sf) 0.311 ac (13, 528. 89 sf) Other on -site N/A N/A Off -site 0.40 ac (17,296 sf) N/A Total: 3.91 ac (170,320 sf) Total: 33!20 ac (139,392 §f) * Impervious area is defined as the built upon area including, bw riot limited to, buildings, roads, parking areas, sidewalks, gravel areas, etc. Form SWU-101 Version 3.99 Page 2 of 4 How was the off -site impervious area listed above derived? 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 SW8 020637 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 a total of 309, 712 square feet for the development 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. Each lot will be restricted based on the following table; Wet Pond Infiltration_ Basin Lot I @ 30,693 ft': --- 30,693 Lot 2 @ 64,164 ftz: --- 64,164 Lot 3 @ 100,581 ftz: 56,046 44,535 Lot 5 @ 48,065 ftz: 48,065 --- Lot 6 @ 48, 913 ftz: 48,913 --- Offsite, ft2: 17,296 ---. 3. Swales shall not be filled in, piped, or altered except as necessary to provide driveway crossing. 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 fiiture development shall be directed into the permitted stortwater 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 399 Page 3 of 4 VI. SUBMITTAL REQUIREMENTS Only complete application packages will be accepted and reviewed by the Division of Water -Quality (DWQ). A complete package includes all of the items listed below. The complete application package should be submitted to'the appropriate DWQ Regional Office. I. Please indicate that yotr have provided the following required information by initialing in the space provided next to each item. • Original and one copy of the Stormwater Management Permit Application Form • One copy of the applicable Supplement Form(s) for each BMP • Permit application processing fee of $420 (payable to NCDENR) • Detailed narrative description of stormwater treatment/management • Two copies of plans and specifications, including: - Development/Project name - Engineer and firm -Legend North arrow Scale - Revision number & date Mean high water line Dimensioned property/project boundary Location map with named streets or NCSR numbers Original contours, proposed contours, spot elevations, finished floor elevations Details of roads, drainage features, collection systems, and stormwater control measures Wetlands delineated, or a note on plans that none exist Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations - Drainage areas delineated Vegetated buffers (where required) VII. AGENT AUTHORIZATION If you wish to designate authority to another individual or firm so that they may provide information on your behalf, please complete this section. Designated agent (individual or firm):_ Brian J. Michotz_ Kimley _Horn and Associates Mailing Address: 3001 Weston Parkway City: Cary Phone: ( 919 ) 678-4132 VIII. APPLICANT'S CERTIFICATION State: NC Zip: Fax: ( 919 ) 677-2050 27513 1, (print or type name of person fisted in General Information, item 2) �'.✓ �j�%!¢Q/'1 s✓ certify that the information included on this permit application form is, to the hest of my knowledge, correct and that the project will be constructed in conformance with the approved plans, that the required deed restrictions and protective covenants will be recorded, and that the proposed project complies with the requirements of 15A NCAC 21-1 .1000. Sig Date: ! h N I D_3 Form SWU-101 Version 3,99 Page 4 of 4 Kimley-Horn and Associates, Inc. RECEIVED AUG 14 2002 0 DWQ Deed Restriction Documents for P.O. Box33068 �$ �WV 37 Progress Point Ralolgh, North Carolina PROD # 27636-3068 1. The following covenants are intended to ensure ongoing compliance with State Stormwater Management Permit Number-'YA-)g0Zk)(P37 as issued by the Division of Water Quality under NCAC 2H.1000. 2. The State of North Carolina is made beneficiary of the covenants to the extent necessary to maintain compliance with the stormwater management permit. 3. These covenants are to run with the land and be binding on all persons and parties claiming under them. 4. The covenants pertaining to stormwater may not be altered or rescinded without the express written consent of the State of North Carolina, Division of Water Quality. 5. Alteration to the drainage as shown on the approved plan may not take place without the concurrence of the Division of Water Quality. 1 6. The maximum allowable built -upon areas are: U3 Lot 1: 3U {0�13� ll' e0 19,89SF 6 t Lot 2:.63,059-SF ( 4,144- \N 6 Lot 3 (Portion that drains to lion Pond `A'): 56,046 SF Lot 3 (Portion that drains to Infiltration Pond `B'): 44,535 SF Lot 4: NIA Lot 5: 48,065 SF Lot 6: 48,913 SF This allotted amount includes any built -upon area constructed within the lot property boundaries. Built upon area includes, but is not limited to, structures, asphalt, concrete, gravel, brick, stone, slate, coquina, and parking areas, but does not include raised, open wood decking, or the water surface of swimming pools. 7. All runoff from the built -upon areas on the lot must drain into the permitted system. This may be accomplished through providing roof drain gutters which drain to the street, grading the lot to drain toward the street, or grading perimeter swales to collect lot runoff and directing them into the stormwater system or into the street. Lots that naturally drain into the system are not required to provide these additional measures. 8. Each lot whose ownership is not retained by the permittee, shall submit a permit application to the Division of Water Quality and receive a permit prior to construction. ■ TEL 919 677 2000 FAX 919 677 2050 Permit No. SW 8 020637Q� (to be provided by DWQ) State of North Carolina Department of Environment anti 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 management permit application, in infiltration basin supplement for each system, design calculations, soils report and plans and specifications showing all stormwater conveyances and system details. 1. PROJE C'T INFORMATION Project Name : Progress Point Contact Person: Brian J. Michot This worksheet applies to: Basin No. B (cis idenlified on plans) Phone Number: ( 919) 678-4132 in Drainage Area 2 (frnni Form SiVU-101) 11. 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 SI-IWT Elevation Basin Design Parameters Design Storm Design Volume Drawdown Time Basin Dimensions Basin Size Basin Volumc Provided Basin Elevations Bottorn Elevation Storage Elevation Top Elevation T o ­1 Mr. 6 inlhr or cflhrlsf (circle appropriate units) 22 fmsi (Seasotlal High Water table elevatioii) 1 inch (1.5 hich eveiir for SA waters, I inch evew fur others) T11,297 c.f. 0.36 days 10.5 ft. x 251.0 11,329 c.f. 24 fins] 26.37 frrtsl 29 fllsl ft. = 2636 sq. ft. (bottom tlimeiisioiis) Form SWU-103 Rev 3.99 rage 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 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. *To be recorded upon final plat approval by the City of Wilmington 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 1.0 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. 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 Swt}-103 Rev 3.99 Page 2 of 3 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. 1 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.e. 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 24.6 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: � !J 74Pt tnJ i/Cc e- 0t'�,t ,J+pJ Address: I S �_ c- ec to cr(c. RcA-A G(tiu I a"mar Phone: -2e — Date- /03 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. 1 �/I,Fi�ycrz L/v7� —,a Notary Public for the State of County of do hereby certify that /41 1A 1 640/7/%74'1 personally appeared before me this day of 4vur4 and acknowledge the due execution of the forgoing infiltration basin maintenance requirements. Witness my hand and official seal, SEAL My commission expires xa� Form SWU-103 Rev 3.99 Page 3 of 3 Permit No. SW8020637 (to he provided by DWQ) State of North Carolina Department of Environment and Natural Resources Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM WET DETENTION BASIN SUPPLEMENT This form may be photocopied for use as an original DW Stormwater Management Plan Review: A complete Stormwater management plan submittal includes an application form, a wet detention basin supplement for each basin, design calculations, and plans and specifications showing all basin and outlet structure details. 1. PROJECT INFORMATION Project Name: Progress Point Master P1 nn Contact Person: Brian J. Michot Phone Number: ( 919) 678-4132 For projects with multiple basins, specify which basin this worksheet applies to: A elevations Basin Bottom Elevation 17.5 ft. Permanent Pool Elevation 23.5 ft. Temporary Pool Elevation 24.42 ft. (floor of the basin) (elevation of the orifice) (elevation of the discharge structure overflow) areas Permanent Pool Surface Area 9794 sq. ft. (water surface area at the orifice elevation) Drainage Area 7 .7 1 ac. (on -site and off -site drainage to the basin) Impervious Area 3.91 ac. (on -site and off -site drainage to the basin) volimies Permanent Pool Volume Temporary Pool Volume Forebay Volume Other parameters SA/DA1 . Diameter of Orifice Design lZamfall I)esign TSS Removal 2 Dorm SWU-102 Rev 3.99 25,451 cu. ft. (conihiiied volinne of main basin chid forehav) 14,236 cu. ft. (volume detained above the permanent pool) 5,531 cu. ft. (approximately 20%n of total volinne) 2.77 (surface area to drainage area ratio fromi DWQ table) 1.5 ici. (2 to 5 clay temporary pool draw -clown required) 7 in. 90 __ % (minimian 8.5% required) Page 1 of 4 Footnotes: t When using the Division SAIDA tables, the correct SAIDA ratio for permanent pool sizing should be computed based upon the actual impervious % and permanent pool depth. Linear interpolation should be employed to determine the correct value for non- standard table entries. 2 In the 20 coastal counties, the requirement for a vegetative filter may be waived if the wet detention basin is designed to provide 90% TSS removal. The NCDENR BMP manual provides design tables for both 85% TSS removal and 90% TSS removal. H. 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 .1005. 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 .B -1 a. The permanent pool depth is between 3 and 6 feet (required minimum of 3 feet). AM b. The forebay volume is approximately equal to 20% of the basin volume. 180r r _ c. The temporary pool controls runoff from the design storm event. aTn d. The temporary pool draws down in 2 to 5 days. e. if required, a 30-foot vegetative filter is provided at the outlet (include non -erosive Flow calculations) 3a� f. The basin length to width ratio is greater than 3:1. 1, ✓n g. The basin side slopes above the permanent pool are no steeper than 3:1. �VrA h. A submerged and vegetated perimeter shelf with a slope of 6:1 or less (show detail). 10" t i. Vegetative cover above the permanent pool elevation is specified. M-11 j. A trash rack or similar device is provided for both the overflow and orifice. ax�-, k. A recorded drainage easement is provided for each basin including access to nearest right- of-way. ( re dE /&Vcr/aParp) 1. If the basin is used for sediment and erosion control during construction, clean out of the basin is specified prior to use as a wet detention basin. ✓'`� m. A mechanism is specified which will drain the basin for maintenance or an emergency. ( ore yr -wW e P't .-e) III. WET DETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT The wet detention basin system is defined as the wet detention basin, pretreatment including forebays and the vegetated filter if one is provided. This system (check one) "'�oes 0 does not incorporate a vegetated filter at the outlet. This system (check one) 0 does does not incorporate pretreatment other than a forebay. Form SWU-IO2 Rev 3.99 Page 2 of 4 Maintenance activities shall be performed as follows: l . After every significant runoff producing rainfall event and at least monthly: a. Inspect the wet detention basin system for sediment accumulation, erosion, trash accumulation, vegetated cover, and general condition. b. Check and clear the orifice of any obstructions such that drawdown of the temporary pool occurs within 2 to 5 days as designed. 2. Repair eroded areas immediately, re -seed as necessary to maintain good vegetative cover, mow vegetative cover to maintain a maximum height of six inches, and remove trash as needed. 3. Inspect and repair the collection system (i.e. catch basins, piping, swales, riprap, etc.) quarterly to maintain proper functioning. 4. Remove accumulated sediment from the wet detention basin system semi-annually or when depth is reduced to 75% of the original design depth (see diagram below). Removed sediment shall be disposed of in an appropriate manner and shall be handled in a manner that will not adversely impact water quality (i.e. stockpiling near a wet detention basin or stream, etc.). The measuring device used to determine the sediment elevation shall be such that it will give an accurate depth reading and not readily penetrate into accumulated sediments. When the permanent pool depth reads When the permanent pool depth reads Sediment Re oval El. 19 7 Bottom Ele ation 17.5 ?, FOREBAY 4.5 feet in the main pond, the sediment shall be removed. 4.5 feet in the forebay, the sediment shall be removed. BASIN DIAGRAM (fill in the blanks) Permanent Pool Elevation 23.5 Sediment Removal Elevation 19___- Bottom Elevation 17 -5 25% MAIN POND 5. Remove cattails and other indigenous wetland plants when they cover 50% of the basin surface. These plants shall be encouraged to grow along the vegetated shelf and forebay berm. 6. If the basin must be drained for an emergency or to perform maintenance, the flushing of sediment through the emergency drain shall be minimized to the maximum extent practical. Form SWU-102 Rev 3.99 Page 3 of 4 7. All components of the wet detention basin system shall be maintained in good working order. I acknowledge and agree by my signature below that I am responsible for the performance of the seven 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: Ken A. Chapman Title: Vice President Address: 125 Scaley Bark Rd., Charlotte, NC 28209 Pho Sigr Date:_OJ-- 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,.e yrwc�s f'�7. (7ia, , a Notary Public for the State ofa�s County of do hereby certify that y � Z'q personally appeared before me this 3,wt day of Alzd—� .tom z and acknowledge the due execution of the forgoing wet detention basin maintenance requirements. Witness my hand and official seal, SEAL My commission expires_ _ .z 3, Loa.S Form S WU-102 Rev 3.99 Page 4 of 4 State Stormwater Management Systems Permit No SW8 020637 TO: Linda Lewis, Environmental Engineer � !~, NC DENR/Division of Environmental Management Water Quality Section i JUL l 200 127 Cardinal Drive Extension 1 Wilmington, NC 28405-3845 RE: Progress Point Master Plan ---` Wilmington, NC A & K Project No. 03041 Engineer's Certification 1, J. Phillip Norris, P.E. , as a duly registered Professional Engineer in the State of North Carolina, having been authorized to observe (periodically, weekly, full tirne) the construction of the project, , M - = - ' *`-CT@ Progress Point (Project) for Progress Point One, LLC (Project Owner) hereby state that, to the best of my abilities, due care and diligence were 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. Required items to be checked for this certification to be considered complete are on page 2 of this form. Noted deviations from appro J PN/asn 03041 07-0I-03-sw cert. Signature Registration No. IN . Date July 1, 2003 tions: cc: 'bony Roberts, New Hanover County Building Inspector Ken Chapman / Progress Point One, LLC _-_-- CONSULTING ENGINEERS, INC. 902 Markel Street Wilmington, NC 28401-4733 910-343-9653 Phone 910-343-9604 Fax www.andrewandkuske.com SEAL -w- Certification Requirements: the drainage area to the system contains approximately the permitted acreage. the drainage area to the system contains no more than the permitted amount of built -upon area. A11 the built -upon area associated with the project is graded such that the runoff drains to the system. the outlet/bypass structure elevations are per the approved plan. Fhe outlet structure is located per the approved plans. Trash rack is provided on the outlet/bypass structure. All slopes are grassed with permanent vegetation. Vegetated slopes are no steeper than 3: 1. The inlets are located per the approved plans and do not cause short-circuiting of the system. The permitted amounts of surface area and/or volume have been provided. Required drawdown devices are correctly sized per the approved plans. All required design depths are provided. t14. 3 All required parts of the system are provided, such as vegetated shelf, and a forebay. The overall dimensions of the system, as shown on the approved'plans, are provided. cc: Tony Roberts, New Hanover County Building Inspector Ken Chapman / Progress Point One, LLC _ CONSULTING ENGINEERS, INC. 902 Merkel Street Wilmingion, NC 28401-4733 910-343-9653 Phone 910-343-9604 Fax www.andrewandkuske.com