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HomeMy WebLinkAboutSW4090801_CURRENT PERMIT_20090903STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO. SW�Q���Qz DOC TYPE CURRENT PERMIT C ❑ APPROVED PLANS ❑ HISTORICAL FILE DOC DATE 2�`���j YYYYMMDD A74i'LA. RCD NR North Carolina Department of Environment and Natural Resources Beverly Eaves Perdue Governor Mr. William McDonald Davie Kidney Center of WFU 1804 King Road Tifton, GA 31793 Division of Water Quality Coleen H. Sullins Director September 1, 2009 Subject: Stormwater Permit No. SW4090801 Davie Kidney Center High Density Commercial Bio-Retention Project Davie County Dear Mr. McDonald: . Dee Freeman Secretary FRECEIVED N.C. Moot. of eNM SEP 0 3.2009 Winston-Salem Regional Office The Stormwater Permitting Unit received a complete Stormwater Management Permit Application for Davie Kidney Center on August 7, 2009, with additional information received on September 1, 2009. Staff review of the plans and specifications has determined that the project, as proposed, will comply with the Stormwater Regulations set forth in Title 15A NCAC 2H.1000 and Session Law 2006-246. We are forwarding Permit No. SW4090801, dated September 1, 2009, for the construction, operation and maintenance of the subject project and the stormwater BMPs. This permit shall be effective from the date of issuance until September 1, 2019, 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 inspection 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. This project will be kept on file at the Winston-Salem Regional Office. If you have any questions, or need additional information concerning this matter, please contact Robert Patterson at (919) 807-6375; or robert.patterson@ncdenr.gov. S�cerely, for Coleen H. Sullins Wetlands and Stormwater Branch One 1617 Mail Service Center, Raleigh, North Carolina 27699-1617 NorthCarofina Location: 512 N. Salisbury St. Raleigh, North Carolina 27604 Phone: 919-807-63001 FAX: 919.807.64N4 Customer Service: 1-877-623.6748 �atl Lrall� IntemeL www.ncwaterquality.org An Equal Opportunity 1 Affirmative Action Employer Mr. William McDonald , SW4090801 — Davie Kidney Center September 1, 2009 cc: Winston-Salem Regional Office Sue Homewood - WSRO Central Files SPU Files ec: Ken Binkley - Stimmel Associates, PA Page 2 of 2 State Stormwater Permit Permit No. SW4090801 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 Davie Kidney Center of Wake Forest University Davie Kidney Center Dr-; oc svil e; - avre-County= FOR THE construction, operation and maintenance of 2 bioretention cells in compliance with the provisions of Session Law 2006-246 and 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 1, 2019, and shall be subject to the following specified conditions and limitations: I. DESIGN STANDARDS This permit is effective only with respect to the nature and volume of stormwater described in the application and other supporting data. 2. This stormwater system has been approved for the management of stormwater runoff as described in Section 1.7 on page 3 of this permit. The stormwater control has been designed to handle the runoff from 48,449 square feet of impervious area. 3. The tract will be limited to the amount of built -upon area as indicated in Section 1.7 of this permit, and per the application documents and as shown on the approved plans. 4. All stormwater collection and treatment systems must be located in either dedicated common areas or recorded easements. The final plats for the project will be recorded showing all such required easements, in accordance with the approved plans. 5. The runoff from all built -upon area within the permitted drainage area of this project must be directed into the permitted stormwater control system. 6. The built -upon areas associated with this project shall be located at least 30 feet landward of all perennial and intermittent surface waters. Page 1 of 6 State Stormwater Permit ' Permit No. SW4090801 7 The following design criteria have been provided in the bioretention cells and must be maintained at design condition: Cell #1 a. Drainage Area, Acres: 0.98 7 Onsite, ft : 42,842 Offsite, ft2: 0 b. Total Impervioug Surfaces, ft2: 25,448 Onsite, ft : 25,448 Offsite, ft2: 0 C. Design Storm, inches:' 1.0 d. Max. Ponded Depth, inches: 12 e. Seasonal High Water Table, fmsl- 782 f. Planting Media Depth, feet: 3.0 g. Cell Dimensions, feet: 141 x22 h. Media Elevation, fmsl: 796.0 i. Bottom Surface Area, ft2: 2,602 j. Permitted Storage Volume, ft3: 2,165 k. Bypass 1 Storage Elevation, fmsl: 797.0 I. Predevelopment 1 year 24 hour: 0.253 cfs M. Post development 1 year 24 hour: 0.192 cfs n. Drawdown Time, hours: 18 . o. Underdrain Diameter, inches: 6..0 p LL' `Totahnumberof plants provided:---105T ---`- q. Receiving Stream/River Basin: Bear Creek 1 Ya r. Stream Index Number: 12-108 S. Classification of Water Body II. SCHEDULE OF COMPLIANCE Cell #2 1.02 37,308 7,182 23,001 23,001 0 1.0. 12- 782 3.0 82x37 799.5 2,453 2,159 800.5 0.593 cfs 0.243 cfs 18 dkin-Pee Dee -18-(1) 'C" 1. The stormwater management system shall be constructed in its entirety, vegetated and operational for its intended use prior to the construction of any built -upon surface. 2. During construction, erosion shall be kept to a minimum and any eroded areas of the system will be repaired immediately. 3. The permittee shall at all time 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 re -vegetation of slopes and the filter strip. d. Immediate repair of eroded areas. e. Maintenance of all slopes in accordance with approved plans. f. Debris removal and unclogging of all drainage structures, level spreader, filter media, planting media, underdrains, catch basins and piping. g. Access to the cell and outlet structure must be available at all times. 4. Records of maintenance activities must be kept for each permitted BMP. The reports will indicate the date, activity, name of person performing the work and what actions were taken. 5. The permittee shall submit to the Division of Water Quality an annual summary report of the maintenance and inspection records for each BMP. The report shall summarize the inspection dates, results of the inspections, and the maintenance work performed at each inspection. Page 2 of 6 State Stormwater Permit Permit No. SW4090801 6. The facilities shall be constructed as shown on the approved plans. This permit shall become void 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. A modification may be required for those deviations. 8. If the stormwater system was used as an Erosion Control device, it must be restored to design condition prior to operation as a stormwater treatment device, and prior to occupancy of the facility. 9. Access to the stormwater facilities shall be maintained via appropriate recorded easements at all times. 10. The permittee shall submit to the Director and shall have received approval for revised _plans,_specifi_cations, and calculations prior to construction, for any �--- modification to the approve- dplans, including, buf- i&flimited-toy those -listed below: a. Any revision to any item shown on the approved plans, including the stormwater management measures, built -upon area, details, etc. b. Project name change. C. Transfer of ownership. d. Redesign or addition to the approved amount of built -upon area or to the drainage area. e. Further subdivision, acquisition, lease or sale of all or part of the project area. The project area is defined as all property owned by the permittee, for which Sedimentation and Erosion Control Plan approval or a CAMA Major permit was sought. f. Filling in, altering, or piping of any vegetative conveyance shown on the approved plan. 11. The permittee shall submit final site layout and grading plans for any permitted future areas shown on the approved plans, prior to construction. 12. 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. 13. The Director may notify the permittee when the permitted site does not meet one or more of the minimum requirements of the permit. Within the time frame specified in the notice, the permittee shall submit a written time schedule to the Director for modifying the site to meet minimum requirements. The permittee shall provide copies of revised plans and certification in writing to the Director that the changes have been made. III. GENERAL CONDITIONS This permit is not transferable except after notice to and approval by the Director. In the event of a change of ownership, or a name change, the permittee must submit a completed Name/Ownership Change form signed by both parties, to the Division of Water Quality, accompanied by the supporting documentation as listed on page 2 of the form. The approval of this request will be considered on its merits and may or may not be approved: Page 3 of 6 State Stormwater Permit " Permit No. SW4090801 2. The permittee is responsible for compliance with all permit conditions until such time as the Division approves a request to transfer the permit. 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) having 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 stormwater management systems. 6. The permittee grants DENR Staff permission to enter the property during normal business hours for the purpose of inspecting all components of the permitted stormwater management facility. 7. The permit issued shall continue in force and effect until revoked or terminated._ _ TI1e permit may lae modified; revoked an-d-reissued-or-terminated-for cause: The filing of a request for a permit modification, revocation and re -issuance or termination does not stay any permit condition. 8. Unless specified elsewhere, permanent seeding requirements for the stormwater control must follow the guidelines established in the North Carolina Erosion and Sediment Control Planning and Design Manual. 9. Approved plans and specifications for this project are incorporated by reference and are enforceable parts of the permit. 10. The issuance of this permit does not prohibit the Director from reopening and modifying the permit, revoking and reissuing the permit, or terminating the permit as allowed by the laws, rules and regulations contained in Session Law 2006- 246, Title 15A NCAC 2H.1000, and NCGS 143-215.1 et.al. 11. The permittee shall notify the Division in writing of any name, ownership or mailing address changes at least 30 days prior to making such changes. 12. The permittee shall submit a renewal request with all required forms and documentation at least 180 days prior to the expiration date of this permit. Permit issued this the Vt day of September, 2009. NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION Division of Water Quality By Authority of the Environmental Management Commission Page 4 of 6 State Stormwater Permit Permit No. SW4090801 Davie Kidney Center Stormwater Permit No. SW4090801 Davie County Designer's Certification I, , as a duly registered in the State of North Carolina, having been authorized to observe (periodically/ weekly/ full time) the construction of the project, - :.-:- - — - (P-rojecf_ Nam e):--z._------- for (Project Owner) hereby state that, to the best of my abilities, due care and diligence was used in the observation of the project construction such that the construction was observed to be built within substantial compliance and intent of the approved plans and specifications. The checklist of items on page 2 of this form is included in the Certification. Noted deviations from approved plans and specification: Signature Registration Number Date SEAL Page 5 of 6 State Stormwater Permit Permit No. SW4090801 Certification Requirements: 1. The drainage area to the system contains approximately the permitted acreage. 2. The drainage area to the system contains no more than the permitted amount of built -upon area. 3. All the built -upon area associated with the project is graded such that the runoff drains to the system. 4. All roof drains are located such that the runoff is directed into the system. 5_._ _ Tlie-outletlbypass_structure elevations are --the approved plan: T� 6 7 8 9 The outlet structure is located per the approved plans. Trash rack is provided on the outlet/bypass structure. All slopes are grassed with permanent vegetation, per the vegetation plan. 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. All required parts of the system are provided, such as a vegetated shelf, and a forebay. The required system dimensions are provided per the approved plans. M. DV'WQ Winston-Salem Regional Office 585 Waughtown Street Winston-Salem, NC 27107 DWQ Central Files 1617 Mail Service Center Raleigh, NC 27699 Page 6 of 6 th NCDENR North Carolina Department of Environment and Natural Resources Beverly Eaves Perdue Governor Mr. William McDonald Davie Kidney Center of WFJ. 1804 King Road Tifton, GA 31793 Division of Water Quality Coleen H. Sullins Director September 1, 2009 Subject: Stormwater Permit No. SW4090801 Davie Kidney Center High Density Commercial Bio-Retention Project Davie County Dear. Mr. McDonald: .. _ Dee Freeman Secretary The Stormwater Permitting Unit received a complete Stormwater Management Permit Application for Davie Kidney Center on August 7, 2009, with additional information received on September 1, 2009. Staff review of the plans and specifications has determined that the project, as proposed, will comply with the Stormwater Regulations set forth in Title 15A NCAC 2H.1000 and Session Law 2006-246. We are forwarding Permit No. SW4090801, dated September 1, 2009, for the construction, operation and maintenance of the subject project and the stormwater BMPs. This permit shall be effective from the date of issuance until September 1, 2019, 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 inspection 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 150E 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. This project will be kept on file at the Winston-Salem Regional Office. If you have any questions, or need additional information concerning this matter, please contact Robert Patterson at (919) 807-6375; or robert.patterson@ncdenr.gov. ply, for Coleen H. Sullins Wetlands and Stormwater Branch One 1617 Mail Service Center, Raleigh, North Carolina 27699.1617 1. V �TOl�tl l Ci�rO 1 r� �� Location: 512 N. Salisbury St. Raleigh, North Carolina 27604 �aturall� Phone: 919-807.63001 FAX: 919.807.6494 I Customer Service: 1-877-623-6748 Internet: www.ncwaterqualit .org An Equal Opportunity 1 Atrrma5ve Acton Employer Mr. William McDonald r SW4090801 — Davie Kidney Center September 1, 2009 cc: Winston-Salem Regional Office Sue Homewood - WSRO Central Files SPU Files ec: Ken Binkley - Stimmel Associates, PA Page 2 of 2 State Stormwater Permit Permit No. SW4090801 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 Davie Kidney Center of Wake Forest University Davie Kidney Center - = interstate Dr; EVlocksvilfe Davie County---—-- FOR THE construction, operation and maintenance of 2 bioretention cells in compliance with the provisions of Session Law 2006-246 and 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 1, 2019, and shall be subject to the following specified conditions and limitations: I. DESIGN STANDARDS 1. This permit is effective only with respect to the nature and volume of stormwater described in the application and other supporting data. 2. This stormwater system has been approved for the management of stormwater runoff as described in Section 1.7 on page 3 of this permit. The stormwater control has been designed to handle the runoff from 48,449 square feet of impervious area. 3. The tract will be limited to the amount of built -upon area as indicated in Section 1.7 of this permit, and per the application documents and as shown on the approved plans. 4. All stormwater collection and treatment systems must be located in either dedicated common areas or recorded easements. The final plats for the project will be recorded showing all such required easements, in accordance with the approved plans. 5. The runoff from all built -upon area within the permitted drainage area of this project must be directed into the permitted stormwater control system. 6. The built -upon areas associated with this project shall be located at least 30 feet landward of all perennial and intermittent surface waters. Page 1 of 6 State Stormwater Permit ' Permit No. SW4090801 7. The following design criteria have been provided in the bioretention cells and must be maintained at design condition: Cell #1 Cell #2 a. Drainage Area, acres: 0.98 : 1.02 Onsite, ft : 42,842 37,308 Offsite, ft2: 0 7,182 b. Total Imperviou Surfaces, ft2: 25,448 23,001 Onsite, W: 25,448 23,001 Offsite, ft . 0. 0 C. Design Storm, inches: 1.0 1.0 d. Max. Ponded Depth, inches: 12 - 12 e. Seasonal High Water Table, fmsl: 782 782 f. Planting Media Depth, feet: 3.0 3.0 g. Cell Dimensions, feet.- 141 x22 82x37 h. Media Elevation, fmsl: 796.0 799.5 i. Bottom Surface Area, ft2: 2,602 2,453 j. Permitted Storage Volume-, ft3: 2,165 2,159 k. Bypass 1 Storage Elevation, fmsl: 797..0 800.5 I. Predevelopment 1 year 24 hour: 0.253 cfs 0.593 cfs M. Post development 1 year 24 hour: 0.192 cfs 0.243 cfs n. Drawdown Time, hours: 18 . 18 o. Underdrain Diameter, inches: 6.0 6_0 _--_p r --- .Total -number -of plantsWp &_ided 5 q. Receiving Stream/River Basin: Bear Creek / Yadkin -Pee Dee r. Stream Index Number: 12-108-18-(1) S. Classification of Water Body: . "C" II. SCHEDULE OF COMPLIANCE 1. The stormwater management system shall be constructed in its entirety; vegetated and operational for its intended use prior to the construction of any built -upon surface. 2. During construction, erosion shall be kept to a minimum and any eroded areas of the system will be repaired immediately. 3. The permittee shall at all time 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 re -vegetation of slopes and the filter strip. d. Immediate repair of eroded areas. e. Maintenance of all slopes in accordance with approved plans. f. Debris removal and unclogging of all drainage structures, level spreader, filter media, planting media, underdrains, catch basins and piping. g. Access to the cell and outlet structure must be available at all times. 4. Records of maintenance activities must, be kept for each permitted BMP. The reports will indicate the date, activity, name of person performing the work and what actions were taken. 5. The permittee shall submit to the Division of Water Quality an annual summary report of the maintenance and inspection records for each BMP. The report shall summarize the inspection dates, results of the inspections, and the maintenance work performed at each inspection. Page 2 of 6 State Stormwater Permit Permit No. SW4090801 6. The facilities shall be constructed as shown on the approved plans. This permit shall become void 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. A modification may be required for those deviations. B. If the stormwater system was used as an Erosion Control device, it must be restored to design condition prior to operation as a stormwater treatment device, and prior to occupancy of the facility. 9. Access to the stormwater facilities shall be maintained via appropriate recorded easements at all times. 10. The permittee shall submit to the Director and shall have received approval for —_---revised plans, specifications, and calculations prior to construction, for any --" modification to the approved -plans, including;�but not -limited -to; those listed- below: a. Any revision to any item shown on the approved plans, including the stormwater management measures, built -upon area, details, etc. b. Project name change. C. Transfer of ownership. d. Redesign or addition to the approved amount of built -upon area or to the drainage area. e. Further subdivision, acquisition, lease or sale of all or part of the project area. The project area is defined as all property owned by the permittee, for which Sedimentation and Erosion Control Plan approval or a CAMA Major permit was sought. f. Filling in, altering, or piping of any vegetative conveyance shown on the approved plan. 11. The permittee shall submit final site layout and grading plans for any permitted future areas shown on the approved plans, prior to construction. 12. 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. 13. The Director may notify the permittee when the permitted site does not meet one or more of the minimum requirements of the permit. Within the time frame specified in the notice, the permittee shall submit a written time schedule to the Director for modifying the site to meet minimum requirements. The permittee shall provide copies of revised plans and certification in writing to the Director that the changes have been made. III. GENERAL CONDITIONS This permit is not transferable except after notice to and approval by the Director. In the event of a change of ownership, or a name change, the permittee must submit a completed Name/Ownership Change form signed by both parties, to the Division of Water Quality, accompanied by the supporting documentation as listed 'on page 2 of the form. The approval of this request will be considered on its merits and may or may not be approved. Page 3 of 6 State Stormwater Permit Permit No. SW4090801 2. The permittee is responsible for compliance with all permit conditions until such time as the Division approves a request to transfer the permit. 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) having 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 stormwater management systems. 6. The permittee grants DENR Staff permission to enter the property during normal business hours for the purpose of inspecting all components of the permitted stormwater management facility. 7. The permit issued shall continue in force and effect until revoked or terminated.__ --------- = The -permit maybe modified; revoked -and -reissued or -Terminated -for cause: The filing of a request for a permit modification, revocation and re -issuance or termination does not stay any permit condition. 8. Unless specified elsewhere, permanent seeding requirements for the stormwater control must follow the guidelines established in the North Carolina Erosion and Sediment Control Planning and Design Manual. 9. Approved plans and specifications for this project are incorporated by reference and are enforceable parts of the permit. 10. The issuance of this permit does not prohibit the Director from reopening and modifying the permit, revoking and reissuing the permit, or terminating the permit as allowed by the laws, rules and regulations contained in Session Law 2006- 246, Title 15A NCAC 2H.1000, and NCGS 143-215.1 et.al. 11. The permittee shall notify the Division in writing of any name, ownership or mailing address changes at least 30 days prior to making such changes. 12. The permittee shall submit a renewal request with all required forms and documentation at least 180 days prior to the expiration date of this permit. Permit issued this the 1" day of September, 2009. NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION for uoteen H. 5unins, uirector Division of Water Quality By Authority of the Environmental Management Commission Page 4 of 6 State Stormwater Permit Permit No. SW4090801 Davie Kidney Center Stormwater Permit No. SW4090801 Davie County Designer's Certification I, , as a duly registered in the State of North Carolina, having been authorized to observe (periodically/ weekly/ fall time) the construction of the project, --- (P_roject-Name)—=_—�___ for (Project Owner) hereby state that, to the best of my abilities, due care and diligence was used in the observation of the project construction such that the construction was observed to be built within substantial compliance and intent of the approved plans and specifications. The checklist of items on page 2 of this form is included in the Certification. Noted deviations from approved plans and specification. - Signature Registration Number Date SEAL 11 Page 5 of 6 State Stormwater Permit Permit No. SW4090801 Certification Requirements: 1. The drainage area to the system contains approximately the permitted acreage. 2. The drainage area to the system contains no more than the permitted amount of built -upon area. 3. All the built -upon area associated with the project is graded such that the runoff drains to the system. 4. All roof drains are located such that the runoff is directed into the system. ThefoutEetibypass s6dt ireyeievations are per -the approved plan 6. The outlet structure is located per the approved plans. 7. Trash rack is provided on the outlet/bypass structure. 8. All slopes are grassed with permanent vegetation, per the vegetation plan. 9. Vegetated slopes are no steeper than 3:1. 10. The inlets are located per the approved plans and do not cause short- circuiting of the system. 11. The permitted amounts of surface area and/or volume have been provided. 12. Required drawdown devices are correctly sized per the approved plans. 13. All required design depths are provided. 14. All required parts of the system are provided, such as a vegetated shelf, and a forebay. 15. The required system dimensions are provided per the approved plans. cc: DWQ Winston-Salem Regional Office 585 Waughtown Street Winston-Salem, NC 27107 DWQ Central Files 1617 Mail Service Center Raleigh, NC 27699 Page 6 of 6 (,At State Stormwater Permit Permit No, SW4090801 RECEIVED N-C, Dent of 5NR AUG 0 3 2010 Winston-Salem Regional Crf Ce Davie Kidney Center Stormwater Permit No. SW4090801 Davie County Designer's Certification I Wilbur E. Christmas , as a duly registered Professional Engineer in the State of North Carolina, having been authorized to observe (periodically/ weekly/ full time) the construction of the project, Davie Kidney Center ; Interstate Drive -, Mocksville, NC (Project Name) for Davie Kidney Center of WFU (Project Owner) hereby state that, to the best of my abilities, due care and diligence was used in the observation of the project construction such that the construction was observed to be built within substantial compliance and intent of the approved plans and specifications. The checklist of items on page 2 of this form is included in the Certification. Noted deviations from approved plans and specification: -Portions of Entry Side Slopes into the cell are steeper than 3:1 Signature Registration Number 23552 Date 7/30/10 yea°a lb 4aAROO .. O�0l09y�9 ,C` �f �Q�ggSEES/p�.�9 P S�tL�t'9l 023552 C; HGINO.�.���:� Page 5 of 6 *$a oeafar)oms State Stormwater Permit Permit No. SW4090801 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,except portions of Driveway ✓ 4. All roof drains are located such that the runoff is directed into the system. _ Z 5. The outlet/bypass structure elevations are per the approved plan. ✓ 6. The outlet structure is located per the approved plans. NIA 7. Trash rack is provided on the outlet/bypass structure. 8. All slopes are grassed with permanent vegetation, per the vegetation plan. 4( 9. Vegetated slopes are no steeper than 11. 10. The inlets are located per the approved plans and do not cause short- circuiting of the.:system. 11. The permitted amounts of surface area and/or volume have been provided. NIA 12. Required drawdown devices are correctly sized per the approved plans. ✓ 13. All required design depths are provided. NIA ✓ 14. All required parts of the system are provided, such as a vegetated shelf and a may. NIA 15. The required system dimensions are provided per the approved plans. CC' DWQ Winston-Salem Regional Office 585 Waughtown Street Winston-Salem, NC 27107 DWQ Central Files 1617 Mail Service Center Raleigh, NC 27699 Page 6 of 6 Compliance Inspection Report Permit: SW4090801 Effective: 09/01/09 Expiration: 09/01/19 Owner: Davie Kidney Center of Wake Forest University Project: Davie Kidney Center County: Davie Interstate Dr Region: Winston-Salem Mocksville NC 27028 Contact Person: Ken Binkley Title: Phone: 336-723-1067 Directions to Project: Type of Project: State Stormwater - HD - Bioretention Drain Areas: 001 - (Bear Creek) (03-07-06 ) ( C) 002 - (Bear Creek) (03-07-C6 ) ( C) On -Site Representative(s): Related Permits: Inspection Date: 03122/2011 Entry Time: 02:00 PM Primary Inspector: Sue L Homewood Secondary Inspector(s): Reason for Inspection: Routine Permit Inspection Type: State Stormwater Facility Status: ® Compliant 0 Not Compliant Question Areas: ® State Stormwater (See attachment summary) Exit Time: 02:30 PM Phone: 336-771-4964 Inspection Type: Compliance Evaluation Page: 1 Permit: SW4090801 Owner - Project: Davie Kidney Center of Wake Forest University Inspection Date: 03/22/2011 Inspection Type: Compliance Evaluation Reason for Visit: Routine Inspection Summary: Built Upon Area Yes No NA NE Is the site BUA constructed as per the permit and approval plans? ■ In In n Is the drainage area as per the permit and approved plans? ■ n n n Is the BUA (as permitted) graded such that the runoff drains to the system? ■ n n n Comment: SW Measures Yes No NA NE Are the SW measures constructed as per the approved plans? ■ n n n Are the inlets located per the approved plans? n n n ■ Are the outlet structures located per the approved plans? n n ❑ ■ Comment: Other Permit Conditions Yes No NA NE Is the site compliant with other conditions of the permit? ■ n In n Comment: Other WQ Issues Yes No NA NE Is the site compliant with other water quality issues as noted during the inspection? ■ n In n Comment Page: 2 Fi 6 MCDENR North Carolina Department of Environment and Natural Resources Division of Energy, Mineral, and Land Resources Land Quality Section Tracy E. Davis, PE, CPM Director October 29, 2013 CERTIFIED MAIL 47013 1710 0002 1865 7614 RETURN RECEIPT .UQUESTED Mr. William McDonald Davie Kidney Center of WFU 1804 King Road Tifton, GA 31793 Subject: NOTICE OF INSPECTION Davie Kidney Center Permit No. SW4090801 Davie County Dear Mr. McDonald: Pat McCrory, Governor John E. Skvarla, III, Secretary On October 29, 2013, Aana Taylor -Smith of the Winston-Salem Regional Office of the Division of Energy, Mineral, and Land Resources (DEMLR) inspected the Davie Kidney Center site in Davie County to determine compliance with Stormwater Management Permit Number SW4090801 issued on September 1, 2009. DEMLR site inspection and subsequent File review revealed that the site is not compliant with the terms and conditions of this permit. The following items were noted during the inspection and file review: I . The slopes near both bioretention cells need minor re -seeding to prevent potential erosion into the treatment area. 2. Grass clippings and other debris should be kept out of the mulch in both bioretention cells. Please remove grass ciippings that have accumulated in the mulch. 3. In bioretention cell #2, grass clippings are clogging the rip -rap near the inlet pipe. Please remove grass clippings and other debris from rip -rap. Please refer to the Sand Filter Operation and Maintenance Agreement and/or NC DENR Stormwater Best Management Practices (BMP) Manual for guidance. The BMP Manual can be found at the following website: .http://portal.nedenr.org/, eb/w /q ws/sti/btnp-manual All necessary repairs should be conducted within 30 days of receiving this letter. DEMLR staff will conduct a follow-up inspection at that time. Please find a copy of the completed form entitled "Compliance Inspection Report" attached to this letter. Please be advised that you are required to comply with the terms, conditions and limitations of your Stortnwater Management Permit under Title 15A North Carolina Administrative Code 21-1 .1003 and North Carolina General Statute 143-214.7, including operation and maintenance of your permitted stormwater system. Winston-Salem Regional Office 585 Waughtown Street, Winston-Salem, NC 27101 . Phone: 336-771-50001 FAX: 336-771-4631 Davie Kidney Center October 29, 2013 Page 2 of 2 If the project has changed name, ownership or mailing address, a formal change of name/ownership form must be submitted to DEMLR within 30 calendar days detailing the change. Please provide the name, mailing address and phone number of the person or entity that is now responsible for this permit. Thank you for your assistance and cooperation during this inspection. Please be advised that violations of the Stormwater Management Permit may be subject to a civil penalty assessment of up to $25,000.00 per day for each violation. if you have any questions, comments, or need assistance with understanding any aspect of Your permit, please do not hesitate to contact Aana Taylor -Smith, Sue White, or me at (336) 77 i-5000. Enclosure: Compliance Inspection Report cc: WSRO Files DWR Central Files Sincerely, Matthew E. Gantt, PE Regional Engineer Land Quality Section a ❑ o r � • m r � � ;n � ❑ CJ I I l k` r N m ; a o�m8E U 'U, Y T N I r D N O �aivYE C 7�r9 a I c ay i caQ cs oo m rn U N c .O N k �, 7- a) �--I O or_ m V U` N I rB -d bA C N 0= � �:E -W Y 5 O Y« Q 17 v C E E c Y o m ' > O ) -E a- W Q O � I � � � t— F_. I� E -�0 4 � Ln �a co a ru I] Q M rq r� rn r� N C'7 O N ii f Compliance Inspection Report Permit: SW4090801 Effective: 09/01/09 Expiration: 12/30/21 Owner: Davie Kidney Center of Wake Forest University Project: Davie Kidney Center County: Davie Interstate Dr Region: Winston-Salem Contact Person: Ken Binkley Title: Directions to Project: Type of Project: State Stormwater - HD - Bioretention Drain Areas: 001 - (Bear Creek) (03-07-06 ) ( C) 002 - (Bear Creek) (03-07-06 ) ( C) On -Site Representative(s): Related Permits: Inspection Date: 1012912013 Entry Time: 09:57 AM Primary Inspector: Aana Taylor -Smith Secondary Inspector(s): Reason for Inspection: Routine Permit Inspection Type: State Stormwater Facility Status: 0 Compliant ® Not Compliant Question Areas: ® State Stormwater (See attachment summary) Mocksville NC 27028 Phone: 336-723-1067 Exit Time: 10:17 AM P h one: 336-771-5000 Inspection Type: Compliance Evaluation Page: 1 Permit: SW4090801 Owner - Project: Davie i<idney Center of Wake Forest University Inspection Date: 10/29/2013 Inspection Type: Compliance Evaluation Reason for visit: Routine Inspection Summary: Please re -seed bare spots on slopes near both cells. Both cells have grass clippings washed into mulch - please remove. Clean out grass clippings in rip -rap near inlet pipe in cell #2. Otherwise, measures look very good and are well -maintained. File Review Yes No NA NE Is the permit active? El ❑ ❑ Signed copy of the Engineer's certification is in the file? ®❑ ❑ ❑ Signed copy of the Operation & Maintenance Agreement is in the file? ®❑ ❑ ❑ Copy of the recorded deed restrictions is in the file? ❑ n n Comment: Built Upon Area Yes No NA NE Is the site BItA constructed as per the permit and approvaf plans? ®❑ ❑ fl Is the drainage area as per the permit and approved plans? ❑ ❑ ❑ Is the BUA (as permitted) graded such that the runoff drains to the system? ®❑ rl ❑ Comment: cteF V.. Mn N❑ NF Are the SW measures constructed as per the approved plans? ®❑ fl ❑ Are the inlets located per the approved plans? ®❑ ❑ ❑ Are the outlet structures located per the approved plans? IN ❑ ❑ Comment: Operation and Maintenance Yes No NA NE Are the SW measures being maintained and operated as per the permit requirements? ❑ Eq 111 ❑ Are the SW BMP inspection and maintenance records complete and available for review or provided to DWQ ❑ ❑ D EM upon request? Comment: Please re -seed bare spots on slopes near both cells. Both cells have grass clippings washed into mulch - please remove. Clean out grass clippings in rip -rap near inlet pipe in cell #2. Otherwise, measures look very good and are well -maintained. Other Permit Conditions Is the site compliant with other conditions of the permit? Comment: Other WQ Issues Is the site compliant with other water quality issues as noted during the inspection? Comment: Yes No NA NE rM❑❑❑ Yes No NA NE M 0 0 0 Page: 2 i .q State Stormwater Inspection Report General Project Name: j:>GIVi-e 1Lid �-Enter ation Date: Contact Person: In V.t Phone Number: I LS - t pLo-1 inspection Type: G E t Inspection Date: 21'► f IS Time In: C)g 57 Time Out: i o 1 � Current Weather: 0 g 0,yCnCi-, I Uvj U 0 S Recent Rain (Date)? Rain - in Location Facility Address 1 Location: n}� S-j-oL D.r. City: jV1oGtLSVille Zip;o2E'� County: Lat: "N Long: - "W y Da v i2 Permit Information Rule Subject to (circle one): 1989 Coastal Rule 1995 Coastal Rule 2008 Coastal Rule Session Law 2006-246 Goose Creek High Quality Waters Outstanding Resource Waters Density (circle one): High (H Low (LD) Stormwater Best Management Practices (I3M Ps) (insert number of ecrcl�): Wet Ponds infiltration Basins Infiltration Trenches Dry Ponds Bioretention eelts Permeable Pavement Cistern Level Spreader/Filter Strip Other (specrfj): File Review LD Swales Stormwater Wetlands Sand filters (circle one) Open Closed Yes No NIA NIE 1. Is the permit active? 2. Signed f,n,,,ineer's Certification on file? t/ 3. Signed Operation and Maintenance agreement on file? 4. Recorded Deed Restrictions on file? ✓ Site Visit- guilt Unen Area MUM ttYe�� ►17.Ih_=. UM 5. BUA is constructed and consistent with the permit requirements? 6. BUA (aspermitted) is graded such that the runoff drains to the system? (high density only) 7. Drainage area is consistent withpermit? i.e. no un ermitted drainage to the SW BMPs) 8. Drainage area is stabilized? to reduce risk of sedimentation to the SW BMPs) t/ Site Visit: Stormwater BMPs Yes No NIA NIE 9. Stormwater BMPs are located per the approvedplans? 10. Stormwater BMPs have dimensions (e g. length, width, area) matching the approvedplans? 1 I . Stormwater BMPs are constructed pSr the approvedplans? / Site Visit: Ooeration and Maintenance Yes No NIA NIE 12. Access points to the site are clear and well maintained? 13. Trash has been removed as needed? 14, Excessive landscape debris (grass clippings, leaves, etc) is controlled? 15. Stormwater BMPs being operated and maintained as per the permit requirements? 16. Inspection and Maintenance records are available for inspection? (high density only, 1995 - present only) Site Visit: Other Permit Conditions Yes No NIA NIE 17. Is the site compliant with other conditions of thepert-nit? c/ Site Visit: Other Water Quality Issues Yes No NIA NIE 18. Is the site compliant with other water quality issues as noted during the inspection? State Stornmvater Inspection Report, Version 3.0_3-09 Page I o1'2 State Stormwater inspection Report IZe- s-e Ce! +1 CP It # t S C-UPP�ncy' w"1S►1A vvj ih-ry rv"-tAAUrttA av'e"l C_1e0LA 1 t) LA_t q V_CtSS Ci ! p i S Otis -t > � j Yip - re'_p A_)� ` C0- t i 2 otkeXw i 5 P_ , V - O ate S y� jrZ p_ w-el11 ' YytZL4 tits ZLA Yv A ctures (some of the pictures taken during the site Compliance Status Compliant ❑ Non -Compliant Letter Sent (circle one) No No Letter type'. NOV NOVRE Other Date Sent: Reference Number: Inspector Name and Signature: tSgYjQ TGU1Dr Date: jig 129 I 1 State Storniwater Inspection Report, Version 3.0_3-09 Page 2 of 2 BIORETENTION CELL: O & M Inspection Checklist J_ INLET and PERIMETER 1. Inlet and Perimeter are free of erosive gullies and bare soil areas: 2 ❑ ❑ ❑ 2. Inlet device (swale, pipe, stone verge) is free of erosion, damage or clogs: 12" ❑ ❑ ❑ 3. Weir heights appear to match approved plans: ❑'� ❑ ❑ ❑ PRETREATMENT 4. Flow is entering pretreatment area (not being bypassed): E( ❑ ❑ ❑ 5. Pretreatment area is free of erosion: a ❑ ❑ ❑ 6. Pretreatment area is free of excessive sediment or clogs: a ❑ ❑ ❑ MAIN TREATMENT AREA 7. Side slopes are 3:1 or less: ❑' ❑ ❑ ❑ 8. The under drain system is free flowing and free of clogs (if applicable): ❑ ❑ ❑ 9. Cleanout(s) and cap is provided for the under drain as per the approved plans: ❑ ❑ ❑ 10. Heavy equipment has not been driven into the cell: []� ❑ ❑ ❑ 11. Surface is free of piles of heavy materials (piles of mulch, etc): [a ❑ ❑ ❑ 12. Ponding depth is 9-12 inches after rain: ❑" r ❑ ❑ ❑ 13. All dimensions are >=10ft.: 12� ❑ ❑ ❑ SOXL/MULCH and VEGETATION 14. Plants are healthy and being maintained: []/ ❑ ❑ ❑ 15. The proper amount and type of vegetation is present in the cell: R ❑ ❑ ❑ 16. Mulch is in good condition (has not broken down or floated/ migrated towards the outlet): (' ❑ ❑ ❑ 17. Surface if free of excessive sediment and clogs: a ❑ ❑ ❑ 18. Trees are free of stakes/wires > 6 months after planting: Ea' ❑ ❑ ❑ 19. The annual soil test shows the proper pH and absence of heavy metal accumulation: ❑ ❑ 0 [� OUTLET 20. Outlet is free of evidence of improper drainage (no standing water, cattails, etc.): ❑ ❑ ❑ 21. Outlet device (drop inlet, weir, etc.) is free of damage or clogs: 12` ❑ ❑ ❑ 22. Orifice size matches approved plans: D ❑ ❑ ❑ 23. Outlet is free of damage, clogs, or erosion: ❑` ❑ ❑ ❑ 24. Relative elevations match approved plans: a ❑ ❑ ❑ V3.3_09 Permit Number: Sk/109 OglOI (to be p -ovided by DWQ) Drainage Area Number: _I Z Bioretention Operation and Maintenance Manual Davie Kidney Center Interstate Rd. Mocksville, NC Owner to keep a maintenance record on this BMP. This maintenance record will be kept in a log in a known set location. Any and all maintenance shall be documented in this log. Any deficient BMP elements noted in the inspection will be corrected, repaired or replaced immediately. These deficiencies can affect the integrity of structures, safety of the public, and the removal efficiency of the BMP. Please keep a copy of this manual with the maintenance log for reference. Any other problems or general questions about Bioretention cells can be addressed at NC Division of Water Quality; Winston-Salem Regional Office (336) 771-5000. Important operation and maintenance procedures: -Immediately after the bioretention cell is established, the vegetation will be watered twice weekly if needed until the vegetation become established (commonly sic weeks). -Snow, mulch or any other material will NEVER be piled on the surface of the bioretention cell. -Heavy equipment will NEVER be driven over the bioretention cell. -Special care will be taken to prevent sediment from entering the bioretention cell. -Once a year, a soil test of the soil media will be conducted. After the bioretention cell is established, the owner or owner's representative will inspect it once a month and within 24 hours after every storm event greater than 1.0 inches (or 1.5 inches if in a Coastal County). Records of operation and maintenance will be kept in a known set location and will be available upon request. Inspection activities shall be performed as follows. Any problems that are found shall be repaired immediately: BIVLP element: Potentialproblems: How I will remediate the The entire BMP Trash/debris is present. Remove the trash/debris. The perimeter of the Areas of bare soil and/or Regrade the soil if necessary to bioretention cell erosive gullies have formed. remove the gully, and then plant a ground cover and water until it is established. Provide lime and a one-time fertilizer application. SNIP element: Potential problems: How I will remediate the roblem The inlet device: pipe. The pipe is clogged (if Unclog the pipe. Dispose of the stone verge or swale applicable). sediment off -site. The pipe is cracked or Replace the pipe. otherwise damaged (if applicable). Stone verge is clogged or Remove sediment and clogged covered in sediment (if stone and replace with clean stone. applicable). The pretreatment area Flow is bypassing Regrade if necessary to route all pretreatment area and/or flow to the pretreatment area. gullies have formed. Restabilize the area after grading. Search for the source of the sediment and remedy the problem if possible, Sediment has accumulated to Remove the sediment and a depth greater than three restabilize the pretreatment area. inches. Erosion has occurred. Provide additional erosion protection such as reinforced turf matting or riprap if needed to prevent future erosion problems._ The bioretention cell: Best professional practices Prune according to best vegetation show that pruning is needed professional practice Weeds are Present Remove the weeds, preferably by hand Tree stakes/wires are present Remove tree stake/ wires six months after planting. (which can kill the tree if not removed). The bioretention Mulch is breaking down or Spot mulch if there are only cell: soils and has floated away. random void areas. Replace whole mulch mulch layer if necessary. Remove the remaining much and replace with triple shredded hard wood mulch at a maximum depth of three inches. Soils and/or mulch are Determine the extent of the clogged with sediment. clogging - remove and replace either just the top layers or the entire media as needed. Dispose of the spoil in an appropriate off -site location. Use triple shredded hard wood mulch at a maximum depth of three inches. Search for the source of the sediment and remedy the problem if possible. BtNIP element: Potential Problems: How I will remediate the problem The bioretention An annual soil test shows Dolomitic lime shall be applied as cell: soils and mulch that pH has dropped or recommended per the soil test and heavy metals have toxic soils shall be removed, disposed accumulated in the soil of properly and replaced with new media. planting media. The underdrain system Clogging has occurred. Wash out the underdrain system. (if applicable) The drop inlet Clogging has occurred. Clean out the drop inlet. Dispose of the sediment off -site. The drop inlet is damaged Repair or replace the drop inlet. Contact the NC Division of Water The receiving water Erosion or other signs of damage have occurred at Quality 401 Oversight Unit at 919- the outlet. 733-1786 Permit Number: 5KI1'0 )'DTOI (to be provided by DfVQ) I acknowledge and agree by my signature below that I am responsible for the performance of the 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. Project name: ) ; `L f Y1 C 4"-- BMP drainage area number: 1 Z Print name: k j�l�" c 1 0 Title: t/ vtn Address: % C� Phone: r o Signature: Date: � _ ,� / • � Note: The legally responsible party should not be a homeowners association unless more than 301"a of the lots have been sold and a resident of the subdivision has been named the president, Il&(A- fYMdrI CkS , a Notary Public for the State of County of _ 7do herebv certify that W 11, ( Y1(C personally appeared before me this SY day of 13AI Lk -24A , and acknowledge the due execution of the forgoing bior ention maintenance requirements. Witness my hand and official seal, SEAL IMy commission expires C 4 �/ D ONLY Date 5eceived Fee Paid Number l�Permit State of North Carolina Department of Environment and Natural Resources Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM This form may be photocopied for use as an original 1. GENERAL INFORMATION 1. Applicants name (specify the name of the corporation, individual, etc. who owns the project): Davie Kidnev Center of Wake Forest Universi 2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance): William McDonald, VP of Research and Development 3. Mailing Address for person listed in item 2 above: 1804 Kin! Rd. City:`I'ifton State:GA Zip:31793 Phone: (229 ) 386-5505 ext 107 Fax: (229 } 382-6167 Email:william@healths,ystemsinc.com 4. Project Name (subdivision, facility, or establishment name -should be consistent with project name on plans, specifications, letters, operation and maintenance agreements, etc.): Davie Kidney Center _ 5. Location of Project (street address): City:Mocksville County:Davie Zip: 6. Directions to project (from nearest major intersection): Head Northwest on Hwy 601 from Hw,.y 601, Interstate 40 Intersection (exit # 170) , take left on Interstate drive, property on right about a quarter mile from 601 / Interstae Drive Intersection 7. Latitude:35° 55' 27" N Longitude:80° 35' 53" W of project 8. Contact person who can answer questions about the project: Name:Ken Binklev Telephone Number: (336 ) 723-1067 Email:kbinkle,,,@stimrnelpa.com 11. PERMIT INFORMATION: Form SWU-101 'Version 09.25.08 Page I of 4 j 1. Specify whether project is (check one): ®Newv ❑Renewal ❑Modification 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 hype of project (check one): ❑Low Density ❑High Density ❑Redevelop ®General Permit ❑Universal SMP ❑Other 4. Additional Project Requirements (check applicable blanks; information on required state permits can be obtained by contacting the Customer Service Center at 1-877-623-6748): ❑CAMA Major ❑Sedimentation/Erosion Control 7404/401 Permit ❑NPDES Industrial Stormwater ICI. 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 will be treated by wav of two bioretention cells 2. Stormwater runoff from this project drains to the Yadkin River basin. 3. Total Property Area: 2.80 acres 4. Total Coastal Wetlands Area: N/A acres 5. Total Property Area (3) - Total Coastal Wetlands Area (4) = Total Project Area**:2.80 acres 6. (Total Impervious Area / Total Project Area) X 100 = Project Built Upon Area (BUA):42 % 7. How many drainage areas does the project have?2 S. 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. For high densih, vroiects, complete the table with one drainage area for each engineered stormwater device. ,Basin Itiform' lion L Drainage`Area 1 Drainage Area Receiving Stream Name Bear Creek Bear Creek Stream Class & Index No. C & 12-108-18-(1) C & 12-108-18-(1) Total Drainage Area (so 42842 44490 On -site Drainage Area (sf) 42842 37308 Off -site Drainage Area (sf) 0 7182 Existing Impervious* Area (so 0 0 Proposed Impervious*Area (so 25448 23001 % Impervious* Area (total) 59.4 51.7 Impervious Surface.Area Drainage�Area 1' ,r �.Drai.naOeArea 2. On -site Buildings (so 0 13190 On -site Streets (so 0 0 On -site Parking (so 24786 9171 On -site Sidewalks (so 662 640 Other on -site (st) 0 Off -site (so 0 Total (so: 25448 23001 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 09.25.09 Page 2 of 1 **Total project area shall be calculated to exclude Coastal Wetlands from rise when calculating the built upon area percentage calculation. This is the area used to calculate overall percent project built upon area (BUA). 9. How was the off -site impervious area listed above derived?Autocad Area Function Projects in Union County: Contact the DIVQ Central Office staff to check to see if you project is located vvithin a Threatened & Endangered Species watershed that niai- be subject to more stringent storm water requirements. IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS One of the following property 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. Forms can be downloaded from littp:j h2o.enr.state.nc.us/su/bmh forms.litm - deed restrictions. Form DRPC-1 High Density Commercial Subdivisions Form DRPC-2 High Density Developments with Outparcels Form DRPC-3 High Density Residential Subdivisions Form DRPC-4 Low Density Commercial Subdivisions Form DRPC-5 Low Densitv Residential Subdivisions Form DRPC-6 Low Density Residential Subdivisions with Curb Outlets By your signature below, you certify that the recorded property restrictions and protective covenants for this project shall include all the applicable items required in the above form, that the covenants will be binding on all parties and persons claiming under them, that they will run with the land, that the required covenants cannot be changed or deleted without concurrence from the NC DWQ, and that they will be recorded prior to the sale of any lot. V. SUPPLEMENT FORMS The applicable state stormwater management permit supplement form(s) listed belo%v must be submitted for each BMP specified for this project. Contact the Stormwater Permitting Unit at (919) 807-6300 for the status and availability of these forms. Forms can be downloaded from 1-ittp://h2o.enr.state.nc.us/sLi/bmp f0rm5.h1111. Form SW401-Low Density Form S1111401-Curb Outlet Svstem Form SW401-Off-Site Svstem Form SW401-Wet Detention Basin Form S11\1401-Infiltration Basin Form SW401-Infiltration Trench Form SW401-Bioretention Cell Form SW401-Level Spreader Form SW401-Wetland Form SW401-Grassed Swale Form SW401-Sand Filter Form SW401-Permeable Pavement Form SW401-Cistern Lowy Density Supplement Curb Outlet System Supplement Off -Site System Supplement Wet Detention Basin Supplement Infiltration Basin Supplement Underground Infiltration Trench Supplement Bioretention Cell Supplement Level Spreader/Filter Strip/Restored Riparian Buffer Supplement Constructed Wetland Supplement Grassed Swale Supplement Sand Filter Supplement Permeable Pavement Supplement Cistern Supplement Form S11'U-101 Version 09.25.08 Page 3 of 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 Office. (Appropriate office may be found by locating project on the interactive online map at httl2://l12o,enr.state.nc.us/su/nisi maps.htm) 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 • Original and one copy of the Deed Restrictions & Protective Covenants Form (if required as per Part IV above) • Original of the applicable Supplement Form(s) and O&M agreement(s) for each BMP • Permit application processing fee of $505 (Express: $4,000 for HD, $2,000 for LD) payable to NCDENR • Calculations & detailed narrative description of stormwater treatment/management • Copy of any applicable soils report • Two copies of plans and specifications (sealed, signed & dated), 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) VIL AGENT AUTHORIZATION If you wish to designate authority to another individual or firm so that they may provide information on your behalf (such as additional information requests), please complete this section. (ex. designing engineer or firm) Designated agent (individual or firm):Stimmel Associates, PA Mailing Address:601 N. Trade St. Suite 200 Citv:Winston-Salem State:NC Zip:27101 Phone: (336 723-1067 Fax: (336 723-1069 Email: kbinkley®stimmelpa.com VIII. APPLICANT'S CERTIFICATION I, (print or type name of person Iisted in General Information, item 2) William McDonald certify that the information included on this permit application form is, to the best of my kno,.vledge, 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. 1 A Signature: Date: 7_3/ i2Cfo � Form SWU-101 Version 09.25.08 Pav-e 4 of 4 Permit Number. 5W-i 0 `0 VJ (to be pmvrded by pwO) oaflp WA7FgoG MEW Y STORMWATER MANAGEMENT PERMIT APPLICATION FORM 401 CERTIFICATION APPLICATION FORM BIORETENTION CELL SUPPLEMENT This form must be filled out, printed and submitted. The Required Items Checklist (Part 111) must be printed, filled out and submitted along with all of the required information. I. PROJECT INFORMATION Project name Davie Kidney Center Contact name Ken Binkley Phone number 336-723-1067 Date July 6, 2009 Drainage area number 1 II. DESIGN INFORMATION Site Characteristics Drainage area 42,842 ft2 Impervious area 25,448 ft2 Percent impervious 59.4% % Design rainfall depth 1.0 inch Peak Flow Calculations Is prelpost control of the 1-yr, 24-hr peak flow required? y (Y or N) 1-yr, 24-hr runoff depth 2.77. in 1-yr, 24-hr intensity 0.12 in/hr Pre -development 1-yr, 24-hr peak flow 0.253 ft3lsec Post -development 1-yr, 24-hr peak flow 0.192 ft3lsec Pre/Post 1-yr, 24-hr peak control -0.061 ft3/sec Storage Volume: Non -SA Waters Minimum volume required 2,098.0 ft3 Volume provided 2,165.0 ft3 OK Storage Volume: SA Waters 1.5' runoff volume ft3 Pre -development 1-yr, 24-hr runoff ft3 Post -development 1-yr, 24-hr runoff ft3 Minimum volume required 0 ft3 Volume provided ft3 Cell Dimensions Ponding depth of water 12 inches OK Ponding depth of water 1,00 ft Surface area of the tap of the bioretention cell 2,602.0 ft' OK Length: 141 ft OK Width: 22 ft OK -or- Radius ft Media and Soils Summary Drawdown time, ponded volume 6 hr OK Drawdown time, to 24 inches below surface 12 hr OK Drawdown time, total: 18 hr In -situ soil: Soil permeability 2,00 inlhr OK Planting media soil. Soil permeability 2.00 in/hr OK Soil composition % Sand (by weight) 85% OK % Fines (by weight) 10% OK 410 Organic (by weight) 5% OK Total: 100% Phosphorus Index (P-Index) of media 30 (unitless) OK Form SIN401-Rioretention-Rev.7 Parts I and II. Design Summary, Page 1 of 2 A Permit Number: (to be provided by DWO) Basin Elevations Temporary pool elevation 797,00 fmsl Type of bioretention cell (answer "Y" to only one of the two following questions): Is this a grassed cell? (Y or N) Is this a cell with treesishrubs? y _,(Y or N) OK media depth Planting elevation (top of the mulch or grass sod layer) 796 fmsl Depth of mulch 2 inches OK Bottom of the planting media soil 793 fmsl Planting media depth 3 It Depth of washed sand b0ow planting media soil It Are underdrains being installed? y (Y or N) How many clean out pipes are being installed? 3 OK What factor of safety is used for sizing the underdrains? (See 10 OK BMP Manual Section 12.3.6) Additional distance between the bottom of the planting media and 1 ft the bottom of the cell to account for underdrains Bottom of the cell required 792 fmsl SHWT elevation 782 fmsl Distance from bottom to SHWT loft OK Planting Plan Number of tree species 10 Number of shrub species 3 Number of herbaceous groundcover species 3 OK Additional Information Does volume in excess of the design volume bypass the y (Y or N} OK bioretention cell? Does volume in excess of the design volume flow evenly distributed n (Y or N) Excess volume must pass through filter. through a vegetated filter? What is the length of the vegetated filter? 0 ft Does the design use a level spreader to evenly distribute flow? n (Y or N) Show how flow is evenly distributed. Is the BMP located at least 30 feet from surface waters (50 feet if y (Y or N) OK SA waters)? Is the BMP located at least 100 feet from water supply wells? y (Y or N) T OK Are the vegetated side slopes equal to or less than 3:1? y (Y or N) OK Is the BMP located in a proposed drainage easement with access y (Y or N} OK to a public Right of Way (ROW)? intet velocity (from treatment system) 458 ft/sec Insufficient inlet velocity untess energy dissipating devices are being used. Is the area surrounding the cell likely to undergo development in n (Y or N) OK the future? Are the slopes draining to the bioretention cell greater than 20%? n (Y or N) OK Is the drainage area permanently stabilized? y (Y or N) OK Pretreatment Used (Indicate Type Used with an "X" in the shaded cell) Gravel and grass (8'lnches gravel followed by 3-5 ft of grass} Grassed swale #VALUE! Forebay Other x Form SVJ461-8ioretention-Rev.7 Parts I and II. Design Summary, Page 2 of 2 Permit Number: LIA `! 0 ! )O Q/ {to be provided by DWQ) �°� wargRo HCDENR STORMWATER MANAGEMENT PERMIT APPLICATION FORM 401 CERTIFICATION APPLICATION FORM BIORETENTION CELL SUPPLEMENT This form must be filled out, printed and submitted. The Required Items Checklist (Part 111) must be printed, filled out and submitted along with all of the required information. I. PROJECT INFORMATION Project name Davie Kidney Center Contact name Ken Binkley Phone number 336-723.1067 Date July 6, 2009 Drainage area number 2 II. DESIGN INFORMATION Site Characteristics Drainage area 44,490 ft' Impervious area 23.001. ftz Percent impervious 51.7% % Design rainfall depth 1.0 inch Peak Flow Calculations Is pre/post control of the 1-yr, 24-hr peak flow required? y (Y or N) 1-yr, 24-hr runoff depth 2.77 in 1-yr, 24-hr intensity 0.12 inlhr Pre -development 1-yr, 24-hr peak Flow 0,593 ft3/sec Post -development 1-yr, 24-hr peak flow 0.243 ft3lsec Pre/Post 1-yr, 24-hr peak control -0,350 Wisec Storage Volume: Non -SA Waters Minimum volume required 1,925.0 ft' Volume provided 2,159.0 ft3 OK Storage Volume: SA Waters 1.5" runoff volume It Pre -development 1-yr, 24-hr runoff ft3 Post -development 1-yr, 24-hr runoff ft3 Minimum volume required 0 ft3 Volume provided ft3 Cell Dimensions Ponding depth of water 12 inches OK Ponding depth of water 1.00 ft Surface area of the top of the bioretention cell 2,453.0 ft' OK Length: 82 ft OK Width: 37 ft OK -or- Radius ft Media and Soils Summary Drawdown time, ponded volume 6 hr OK Drawdown time, to 24 inches below surface 12 hr OK Drawdown time, total: 18 hr In -situ soil, Soil permeability 2.00 inrhr OK Planting media soil: Soil permeability 2.00 inihr OK Soii composition % Sand (by weight) 85% OK % Fines (by weight) 10% OK % Organic (by weight) 5% OK Total: 100% Phosphorus Index (P-Index) of media 30 (un&ess) OK Form SbV401-Bioretention-Rev.7 Pars I and II. Oesign Summary. Page I of 2 �Permit Number; (to be provided by DWQ) Basin Elevations Temporary pool elevation 800.50 fmsl Type of bioretention cell (answer "Y" to only one of the two following questions): Is this a grassed cell? (Y or N) Is this a cell with trees/shrubs? r y (Y or N) OK media depth Planting elevation (top of the mulch or grass sod layer) 799.5 fmsl Depth of mulch 2 inches OK Bottom of the planting media soil 796,5 fmsl Planting media depth 3 ft Depth of washed sand below planting media soil ft Are underdrains being installed? y (Y or N) How many clean out pipes are being installed? 6 OK What factor of safety is used for sizing the underdrains? (See 10 OK BMP Manual Section 12.3.6) Additional distance between the bottom of the planting media and 1 ft the bottom of the cell to account for underdrains Bottom of the cell required 795.5 fmsl SHWT elevation 782 fmsl Distance from bottom to SHWT 13.5 ft OK Planting Plan Number of tree species 0 Number of shrub species 3 Number of herbaceous groundoover species 3 OK Additional Information Does volume in excess of the design volume bypass the y (Y or N) OK bioretention cell? Does volume in excess of the design volume Flow evenly distributed n (Y or N) Excess volume must pass through filter. through a vegetated filter? What is the length of the vegetated filter? 0 ft Does the design use a level spreader to evenly distribute flow? n (Y or N) Show how Flow is evenly distributed. Is the BMP located at least 30 feet from surface waters (50 feet if , y '(Y or N) OK SA waters)? Is the BMP localed at least 100 feet from water supply wells? y (Y or N) Ot< Are the vegetated side slopes equal to or less than 3:1? y (Y or N) OK Is the BMP located in a proposed drainage easement with access y (Y or N) OK to a public Right of Way (ROW)? Inlet velocity (from treatment system) 4.06 ft/sec Insufficient inlet velocity unless energy dissipating devices are being used. is the area surrounding the cell likely to undergo development in n (Y or N) OK the future? Are the slopes draining to the bioretention cell greater than 20%? n (Y or N) OK Is the drainage area permanently stabilized? y (Y or N) OK Pretreatment Used (Indicate Type Used with an "X" in the shaded cell) Gravel and grass (8inches gravel followed by 3-5 ft of grass) Grassed swale #VALUE! Forebay Other x Form SW461-8ioretention-Rev.7 Parts I and IL Design Summary. Page 2 of