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HomeMy WebLinkAboutSW8070933_Current Permit_20071221 OFvv9 OC1 pG Michael F.Easley,Governor 7, William G.Ross Jr.,Secretary North Carolina Department of Environment and Natural Resources -Es whisbalkmat Coleen H.Sullins Director Division of Water Quality December 21, 2007 Randy Martin, City Manager Town of Morehead City 706 Arendell St. Morehead City, NC 28557 Subject: Stormwater Permit No. SW8 070933 Morehead City Baseball Park High Density Project Carteret County Dear Mr. Martin:' The Wilmington Regional Office received a Stormwater Management Permit Application for Morehead City Baseball Park on September 25, 2007 with additional information submitted on October 16 and December 10, 2007. 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 070933 dated December 21, 2007, for the construction of the subject project. This permit shall be effective from the date of issuance until December 21, 2017, and shall be subject to the conditions and limitations as specified therein. Please pay special attention to.the Operation and Maintenance requirements in this permit. Failure to establish an adequate system for operation and maintenance of the stormwater management system will result in future compliance problems. If any parts, requirements, or limitations contained in this permit are unacceptable, you have the right to request an adjudicatory hearing upon written request within sixty (60) days following receipt of this permit. This request must be in the form of a written petition, conforming to Chapter 150B of the North Carolina General Statutes, and filed with the Office of Administrative Hearings, P.O. Drawer 27447, Raleigh, NC 27611-7447. Unless such demands are made this permit shall be final and binding. If you have any questions, or need additional information concerning this matter, please contact M.J. Naugle, or me at (910) 796-7215. Sincer , Edward Beck • Regional Supervisor Surface Water Protection Section ENB/mjn: S:IWQSISTORMWATERIPERMITI070933 dec07 cc: Vincent Antrilli, Jr., EDA Carteret County Building Inspections Wilmington Regional Office Central Files M.J. Naugle N�°_a�nnCarolina Naturally North Carolina Division of Water Quality 127 Cardinal Drive Extension Wilmington,NC 28405 Phone(910)796-7215 Customer Service Wilmington Regional Office Internet: www.ncwaterquality.o_rg Fax (910)350-2004 1-877-623-6748 An Equal Opportunity/Affirmative Action Employer-50%Recycled/10%Post Consumer Paper State Stormwater Management Systems Permit No. SW8 070933 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 Randy Martin, City Manager and Town of Morehead City Morehead City Baseball Park Mayberry Loop Road, Morehead City, Carteret County FOR THE Construction, operation and maintenance of three (3) infiltration basins 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 December 21, 2007, 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 1.6 on page 3 of this permit. The stormwater control has been designed to handle the runoff from 129,893 square feet of impervious area. 3. This basin must be operated with a 50 foot vegetated filter. 4. The tract wilt be limited to the amount of built-upon area indicated on page 3 of this permit, and per approved plans. 5. 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. 6. The runoff from all built-upon area within the permitted drainage area of this project must be directed into the permitted stormwater control system. Page 2 of 7 State Stormwater Management Systems Permit No. SW8 070933 7. The following design criteria have been permitted for the infiltration basins and must be provided and maintained at design condition: Infiltration Trench 1 2 3 a. Drainage area, acres 1.74 2.83 2.63 Onsite, ft2: 75892 123343 114440 Offsite, ft2: 0 0 0 b_Total Impervious Surfaces, ft2: 36316 42495 51082 c. Design Storm, inches: 1.5 1.5 1.5 d. Bottom Surface Area, ft2: 3115 3115 6135 e. Bottom Elevation, FMSL: 7 7 7 f. Bypass Weir Elevation, FMSL: 8.26 8.5 7.98 g. Permitted Storage Volume;ft3 7650 7650 14185 h. Type of Soil Ag i. Infiltration Rate, in/hr: 5.3 3.5 3.5 j. Seasonal High Water Table,FMSL: 5 5 5 k.Time to Draw Down,hours: 5 7 5 1. Receiving Stream/River Basin Crab Point Bay/White Oak m. Stream Index Number: 21-30 n. Classification: Within V2 mile of SA;HWQ 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 times provide the operation and maintenance necessary to assure the permitted stormwater system functions at optimum efficiency. The approved Operation and Maintenance Plan must be followed in its entirety and maintenance must occur at the scheduled intervals including, but not limited to: a. Semiannual scheduled inspections (every 6 months). b. Sediment removal. c. Mowing and re-vegetation of slopes and the vegetated filter. d. Immediate repair of eroded areas. e. Maintenance of all slopes in accordance with approved plans and specifications. f. Debris removal and unclogging of bypass structure, infiltration media,flow spreader, catch basins, piping and vegetated filter. g. A clear access path to the bypass structure must be available at all times. h. Maintain level spreaders in accordance with approved plans and O&M. 4. Records of maintenance activities must be kept and made available upon request to authorized personnel of DWQ. The records will indicate the date, activity, name of person performing the work and what actions were taken. 5. The facilities shall be constructed as shown on the approved plans. This permit shall become void unless the facilities are constructed in accordance with the conditions of this permit, the approved plans and specifications, and other supporting data. 6. 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. Page 3 of 7 State Stormwater Management Systems Permit No. SW8 070933 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 Randy Martin, City Manager and Town of Morehead City Morehead City Baseball Park Maybeny Loop Road, Morehead City, Carteret County FOR THE Construction, operation and maintenance of three (3) infiltration basins 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 December 21, 2007, 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 1.6 on page 3 of this permit. The stormwater control has been designed to handle the runoff from 129,893 square feet of impervious area. 3. This basin must be operated with a 50 foot vegetated filter. 4. The tract will be limited to the amount of built-upon area indicated on page 3 of this permit, and per approved plans. 5. 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. 6. The runoff from all built-upon area within the permitted drainage area of this project must be directed into the permitted stormwater control system. Page 2 of 7 State Stormwater Management Systems Permit No. SW8 070933 7. The following design criteria have been permitted for the infiltration basins and must be provided and maintained at design condition: Infiltration Trench 1 2 3 a. Drainage area,acres 1.74 2.83 2.63 Onsite,ft2: 75892 123343 114440 Offsite,ft2: 0 0 0 b.Total Impervious Surfaces,ft2: 36316 42495 51082 c. Design Storm,inches: 1.5 1.5 1.5 d. Bottom Surface Area, ft2: 3115 3115 6135 e. Bottom Elevation,FMSL: 7 7 7 f. Bypass Weir Elevation,FMSL: 8.26 8.5 7.98 g. Permitted Storage Volume;ft 7650 7650 14185 h. Type of Soil Ag i. Infiltration Rate,in/hr: 5.3 3.5 3.5 j. Seasonal High Water Table,FMSL: 5 5 5 k.Time to Draw Down,hours: 5 7 5 1. Receiving Stream/River Basin Crab Point Bay/White Oak m. Stream Index Number: 21-30 n. Classification: Within%2 mile of SA;HWQ 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 times provide the operation and maintenance necessary to assure the permitted stormwater system functions at optimum efficiency. The approved Operation and Maintenance Plan must be followed in its entirety and maintenance must occur at the scheduled intervals including, but not limited to: a. Semiannual scheduled inspections (every 6 months). b. Sediment removal. c. Mowing and re-vegetation of slopes and the vegetated filter. d. Immediate repair of eroded areas. e. Maintenance of all slopes in accordance with approved plans and specifications. f. Debris removal and unclogging of bypass structure, infiltration media, flow spreader, catch basins, piping and vegetated filter. g. A clear access path to the bypass structure must be available at all times. h. Maintain level spreaders in accordance with approved plans and O&M. 4. Records of maintenance activities must be kept and made available upon request to authorized personnel of DWQ. The records will indicate the date, activity, name of person performing the work and what actions were taken. 5. The facilities shall be constructed as shown on the approved plans. This permit shall become void unless the facilities are constructed in accordance with the conditions of this permit, the approved plans and specifications, and other supporting data. 6. 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. Page 3 of 7 State Stormwater Management Systems Permit No. SW8 070933 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. Access to the stormwater facilities shall be maintained via appropriate easements at all times. 9. The permittee shall submit to the Director and shall have received approval for revised plans, specifications, and calculations prior to construction, for any modification to the approved plans, including, but not limited to, those listed below: a. Any revision to any item shown on the approved plans, including the stormwater management measures, built-upon area, details, etc. b. Project name change. c. Transfer of ownership. d. Redesign or addition to the approved amount of built-upon area or to the drainage area. e. Further subdivision, acquisition, lease or sale of all or part of the project area. The project area is defined as all property owned by the permittee, for which Sedimentation and Erosion Control Plan approval or a CAMA Major permit was sought. f. Filling in, altering, or piping of any vegetative conveyance shown on the approved plan. 10. The permittee shall submit final site layout and grading plans for any permitted future areas shown on the approved plans, prior to construction. 11. A copy of the approved plans and specifications shall be maintained on file by the Permittee for a minimum of ten years from the date of the completion of construction. 12. The Director may notify the permittee when the permitted site does not meet one or more of the minimum requirements of the permit. Within the time frame specified in the notice, the permittee shall submit a written time schedule to the Director for modifying the site to meet minimum requirements. The permittee shall provide copies of revised plans and certification in writing to the Director that the changes have been made. III. GENERAL CONDITIONS 1. This permit is not transferable to any person or entity 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 to the Division of Water Quality, signed by both parties, and accompanied by the appropriate 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. 2. The permittee is responsible for compliance with all permit conditions until such time as the Division approves the 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) having jurisdiction. Page 4 of 7 State Stormwater Management Systems Permit No. SW8 070933 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 may be 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 permittee shall notify the Division in writing of any name, ownership or mailing address changes within 30 days. Permit issued this the twenty-first day of December 2007. NOR CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION CUD/3 for Coleen H. Sullins, Director Division of Water Quality By Authority of the Environmental Management Commission Page 5 of 7 State Stormwater Management Systems Permit No. SW8 070933 Morehead City Baseball Park Stormwater Permit No. SW8 070933 Carteret 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, (Project) for (Project Owner) hereby state that, to the best of my abilities, due care and diligence was used in the observation of the project construction such that the construction was observed to be built within substantial compliance and intent of the approved plans and specifications. The checklist of items on page 2 of this form is included in the Certification. Noted deviations from approved plans and specification: SEAL Signature Registration Number Date Page 6 of 7 State Stormwater Management Systems Permit No. SW8 070933 Certification Requirements: 1. The drainage area to the system contains approximately the permitted acreage. 2. The drainage area to the system contains no more than the permitted amount of built-upon area. 3. All the built-upon area associated with the project is graded such that the runoff drains to the system. 4. All roof drains are located such that the runoff is directed into the system. 5. The bypass structure weir elevation is per the approved plan. 6. The bypass structure is located per the approved plans. 7. A Trash Rack is provided on the bypass structure. 8. All slopes are grassed with permanent vegetation. 9. Vegetated slopes are no steeper than 3:1. 10. The inlets are located per the approved plans and do not cause short-circuiting of the system. 11. The permitted amounts of surface area and/or volume have been provided. 12. All required design depths are provided. 13. All required parts of the system are provided. 14. The required system dimensions are provided per the approved plans. cc: NCDENR-DWQ Regional Office Carteret County Building Inspections Page 7 of 7 Filter Strip, Restored Riparian Buffer and Level Spreader Inspection and Maintenance Agreement I will keep a maintenance record on this BMP. This maintenance record will be kept in a log in a known set location. 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. Important maintenance procedures: - Immediately after the filter strip is established,any newly planted vegetation will be watered twice weekly if needed until the plants become established (commonly six weeks). - Once a year,the filter strip will be reseeded to maintain a dense growth of vegetation - Stable groundcover will be maintained in the drainage area to reduce the sediment load to the vegetation. - Two to three times a year, grass filter strips will be mowed and the clippings harvested to promote the growth of thick vegetation with optimum pollutant removal efficiency. Turf grass should not be cut shorter than 3 to 5 inches and may be allowed to grow as tall as 12 inches depending on aesthetic requirements (NIPC, 1993). Forested filter strips do not require this type of maintenance. - Once a year,the soil will be aerated if necessary. - Once a year, soil pH will be tested and lime will be added if necessary. After the filter strip is established,it will be inspected quarterly and within 24 hours after every storm event greater than 1.0 inch (or 1.5 inches if in a Coastal County). Records of inspection 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. BMP element , Potential problem: How I will remediate the problem:, The entire filter strip Trash/debris is present. Remove the trash/debris. system The flow splitter device The flow splitter device is Unclog the conveyance and dispose (if applicable) clogged. _of any sediment off-site. The flow splitter device is Make any necessary repairs or damaged. replace if damage is too large for 1 repair. 1 BMP element Potential problem: How T will remediate the problem: The swale and the level The swale is dogged with Remove the sediment and dispose lip sediment. of it off-site, The level lip is cracked, Repair or replace lip. settled,undercut,eroded or otherwise damaged. There is erosion around the Regrade the soil to create a berm end of the level spreader that that is higher than the level lip,and shows stormwater has then plant a ground cover and bypassed it. water until it is established. Provide ' lime and a one-time fertilizer application. Trees or shrubs have begun Remove them. to grow on the swale or just downslope of the level lip. The bypass channel Areas of bare soil and/or Regrade the soil if necessary to erosive gullies have formed, remove the gully,and then reestablish proper erosion control. Turf reinforcement is Study the site to see if a larger damaged or ripap is rolling bypass channel is needed(enlarge if downhill, necessary). After this,reestablish the erosion control material. The filter strip Grass is too short or too long Maintain grass at a height of (if applicable). approximately three to six inches. Areas of bare soil and/or Regrade the soil if necessary to 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. Sediment is building up on Remove the sediment and the filter strip. restabilize the soil with vegetation if necessary. Provide lime and a one- time fertilizer application. Plants are desiccated. Provide additional irrigation and fertilizer as needed. Plants are dead,diseased or Determine the source of the dying. problem: soils,hydrology,disease, etc, Remedy the problem and, replace plants. Provide a one-time fertilizer application. Nuisance vegetation is Remove vegetation by hand if choking out desirable species. possible. If pesticide is used,do not allow it to get into the receiving __ water. The receiving water Erosion or other signs of Contact the NC Division of Water jdamage have occurred at the Quality local Regional Office,or the outlet. 401 Oversight Unit at 919-733-1786. S 6ri0933 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. Print name: P.andy Martin Title: City Manager Address: 706 Arendell Street, Morehead City,NC 28557 . Phone:252-726-684 Signature: /, /- , 77d. �` Date: /?/ $ ,f)? . 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 a vt r_o_ gi.b Cam,•. ,a Notary Public for the State of 4Jo,4-t- Chr o I;n.a_ , County of CCU r 4-cA2.4 . , do hereby certify that personally appeared before me this�'F"`- day of-0 Q.c ,c of , and acknowledge the due execution of the forgoing wet detention basin maintenance requirements. Witness my hand and official seal, 01;eu1441r s® It oe ~°°sue#r�eA SEAL My commission expires [, /3 0 /a..o o$, sr-z-5(c3 b rl = Filter Strip, Restored Riparian Buffer and Level Spreader Inspection and Maintenance Agreement I will keep a maintenance record on this BIVIP. This maintenance record will be kept in a log in a known set location. 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. Important maintenance procedures: — Immediately after the filter strip is established,any newly planted vegetation will be watered twice weekly if needed until the plants become established (commonly six weeks). — Once a year,the filter strip will be reseeded to maintain a dense growth of vegetation — Stable groundcover will be maintained in the drainage area to reduce the sediment load to the vegetation. Two to three times a year, grass filter strips will be mowed and the clippings harvested to promote the growth of thick vegetation with optimum pollutant removal efficiency. Turf grass should not be cut shorter than 3 to 5 inches and may be allowed to grow as tall as 12 inches depending on aesthetic requirements (NIPC, 1993), Forested filter strips do not require this type of maintenance. — Once a year,the soil will be aerated if necessary. — Once a year,soil pH will be tested and lime will be added if necessary. After the filter strip is established,it will be inspected quarterly and within 24 hours after every storm event greater than 1.0 inch (or 1.5 inches if in a Coastal County). Records of inspection 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. BMP element Potential problem: How I will remediate the problem:, The entire fitter strip Trash/debris is present. Remove the trash/debris. system The flow splitter.device The flow splitter device is Unclog the conveyance and dispose (if applicable) clogged. of any sediment off-site, The flow splitter device is Make any necessary repairs or damaged. replace if damage is too large for repair. 1 BMP element Potential problem: How I will reinediate the problem: The swale and the level The swale is dogged with Remove the sediment and dispose lip sediment. of it off-site. The level lip is cracked, Repair or replace lip. settled,undercut,eroded or otherwise damaged. There is erosion around the Regrade the soil to create a berm end of the level spreader that that is higher than the level lip,and shows stormwater has then plant a ground cover and bypassed it water until it is established. Provide line and a one-tune fertilizer application. Trees or shrubs have begun Remove them. to grow on the swale or just downslope of the level lip. The bypass channel Areas of bare soil and/or Regrade the soil if necessary to erosive grillies have formed, remove the gully,and then reestablish proper erosion control. Turf reinforcement is Study the site to see if a larger damaged or ripap is rolling bypass channel is needed(enlarge if downhill, necessary), After this,reestablish the erosion control material. The filter strip Grass is too short or too long Maintain grass at a height of (if applicable). approximately three to six inches. Areas of bare soil and/or Regrade the soil if necessary to 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. Sediment is building up on Remove the sediment and the filter strip. restabilize the soil with vegetation if necessary. Provide lime and a one- time fertilizer application. Plants are desiccated. Provide additional irrigation and fertilizer as needed. Plants are dead,diseased or Determine the source of the dying. problem: soils,hydrology,disease, etc, Remedy the problem and replace plants. Provide a one-time fertilizer application. Nuisance vegetation is Remove vegetation by hand if choking out desirable species. possible. if pesticide is used,do not allow it to get into the receiving water. The receiving water Erosion or other signs of Contact the NC Division of Water damage have occurred at the Quality local Regional Office,or the outlet. 401 Oversight Unit at 919-733-1786. cp-)8 3% 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. Print name: dandy Martin Title: City Manager Address: 706 Arendell Street Morehead City,NC 28557 Phone:252-726-6848 Signature:_ Date: /a? 5 0? 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, Q a fL-( • g, tA".. - , a Notary Public for the State of (Up v 411, Oar o U , County of Car .t r cr , do hereby certify that 1.()Cam 0 H Gar ;fi►--. personally appeared before me this &-k' day of Dee tow , D,.00-t , and acknowledge the due execution of the forgoing wet detention basin maintenance requirements. Witness my hand and official seal, YY� . �ee`a'eeeee �`�1E M. "i. m®s . e. A g lA .63 •yyy .•y a . sit. SEAL My commission expires ii /..3 /c6 Filter Strip, Restored Riparian Buffer and Level Spreader Inspection aid Maintenance Agreement I will keep a maintenance record on this BMP. This maintenance record will be kept in a log in a known set location. 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. Important maintenance procedures: - Immediately after the filter strip is established,any newly planted vegetation will be watered twice weekly if needed until the plants become established (commonly six weeks). - Once a year,the filter strip will be reseeded to maintain a dense growth of vegetation - Stable groundcover will be maintained in the drainage area to reduce the sediment load to the vegetation. - Two to three times a year, grass filter strips will be mowed and the clippings harvested to promote the growth of thick vegetation with optimum pollutant removal efficiency. Turf grass should not be cut shorter than 3 to 5 inches and may be allowed to grow as tall as 12 inches depending on aesthetic requirements (NIPC, 1993), Forested filter strips do not require this type of maintenance. - Once a year,the soil will be aerated if necessary. - Once a year, soil pH will be tested and lime will be added if necessary. After the filter strip is established,it will be inspected quarterly and within 24 hours after every storm event greater than 1.0 inch (or 1.5 inches if in a Coastal County). Records of inspection 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. BMP element Potential pmblem: low I will remediate the problem: The entire filter strip Trash/debris is present. Remove the trash/debris. system The flow splitter device The flow splitter device is Unclog the conveyance and dispose (if applicable) clogged. of any sediment off-site. The flow splitter device is Make any necessary repairs or damaged. replace if damage is too large for repair. . wS 0 `lo BMP element Potential problem: How I will remediate the problem: The swale and the level The Swale is dogged with Remove the sediment and dispose lip sediment. of it off-site. The level lip is cracked, Repair or replace lip. settled,undercut,eroded or otherwise damaked. There is erosion around the Regrade the soil to create a berm end of the level spreader that that is higher than the level lip,and shows stormwater has then plant a ground cover and bypassed it. water until it is established. Provide lime and a one-tune fertilizer application. Trees or shrubs have begun Remove them. to grow on the swale or just downslope of the level lip. _ The bypass channel Areas of bare soil and/or Regrade the soil if necessary to erosive gullies have formed, remove the gully,and then reestablish proper erosion control. Turf reinforcement is Study the site to see if a larger damaged or ripap is rolling bypass channel is needed(enlarge if downhill, necessary). After this,reestablish _ the erosion control material. The filter strip Grass is too short or too long Maintain grass at a height of (if applicable). approximately three to six inches. Areas of bare soil and/or Regrade the soil if necessary to 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 fertil i-ar application. Sediment is building up on Remove the sediment and the filter strip. restabilize the soil with vegetation if necessary. Provide lime and a one- time fertilizer application. Plants are desiccated. Provide additional irrigation and fertilizer as needed. Plants are dead,diseased or Determine the source of the dying• problem: soils,hydrology,disease, etc. Remedy the problem and, replace plants. Provide a one-time fertilizer application. Nuisance vegetation is Remove vegetation by hand if choking out desirable species. possible. If pesticide is used,do not allow it to get into the receiving • water. The receiving water Erosion or other signs of Contact the NC Division of Water I damage have occurred at the Quality local Regional Office,or the outlet. 401 Oversight Unit.at 919-733-1786. Su)o 0rl093; 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 I)WQ of any problems with the system or prior to any changes to the system or responsible party. Print name:, Randy Martin. Title: City Manager , Address: 706 Arendell Street,Morehead City,NC 28557 Phone:252-726-6848 Signature: / �7 f f�.. �. Date: : b .®� �/ 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, Q.a h r.&. /* • ,•k(i v , a Notary Public for the State of /U o r`i1-� (c y o)t n a, County of Qcor 4-a r-`4• , do hereby certify that Gym frt a. ►--4 ___personally appeared before me this 5si-t` dayof � o &)q cerm b•ca oLO -7, and acknowledge the due execution of the forgoing wet detention basin maintenance requirements. Witness my hand and official seal, (3e.,9,-K,s-e- ),),-1 . ,( 21..,-e_.--",-.- N. u - f.\_ ° 4,!AI )... a .... ., „ „: , ,. .... --t,E3L,?../1# SEAL My commission expires . i i /3 o f c2-OO g Infiltration Basin Inspection and Maintenance Agreement I will keep a maintenance record on this BM . This maintenance record will be kept in a log in a known set location. 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. Important maintenance procedures: — The drainage area will be carefully managed to reduce the sediment load to the infiltration basin. — Immediately after the infiltration basin is established,the vegetation will be watered twice weekly if needed until the plants become established(commonly six weeks). — No portion of the infiltration basin will be fertilized after the initial fertilization that is required to establish the vegetation. — The vegetation in and around the basin will be maintained at a height of approximately six inches. After the infiltration basin is established,it will be inspected once a quarter and within 24 hours after every storm event greater than 1.0 inches (or 1.5 inches if in a Coastal County). Records of inspection 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. BMP element; Potential.problem: How I will remediate the problem; The entire BMP Trash/debris is present. Remove the bash/debris. The perimeter of the Areas of bare soil and/or Regrade the soil if necessary to infiltration basin 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. The inlet device: pipe or The pipe is dogged(if Unclog the pipe. Dispose of the swale applicable). sediment off-site. , The pipe is cracked or Replace the pipe. otherwise damaged(if applicable). Erosion is occurring in the Regrade the Swale if necessary to swale(if applicable). smooth it over and provide erosion control devices such as reinforced turf matting or riprap to avoid future problems with erosion. I BMP element l Potential problem: How I will remediate the problem: The forebay f Sediment has accumulated I Search for the source of die and reduced the depth to 75% sediment and remedy the problem if of the original design depth. possible. Remove the sediment and dispose of it in a location where it will not cause impacts to streams or the BMP. Erosion has occurred or Provide additional erosion riprap is displaced. protection such as reinforced turf matting or riprap if needed to prevent_future erosion problems. Weeds are present. Remove the weeds,preferably by hand. If pesticides are used,wipe them on the plants rather than spraying. The main treatment area A visible layer of sediment Search for the source of the has accumulated. sediment and remedy the problem if possible. Remove the sediment and dispose of it in a location where it will not cause impacts to streams or the BMP. Replace any media that was removed in the process. Revegetate disturbed areas immediately. Water is standing more than Replace the top few inches of filter 5 days after a storm event. media and see if this corrects the standing water problem. If so, revegetate immediately. if not, consult an appropriate professional for a more extensive repair. Weeds and noxious plants are Remove the plants by hand or by growing in the main wiping them with pesticide(do not treatment area. spray). The embankment Shrubs or trees have started Remove shrubs or trees to grow on the embankment. immediately. An annual inspection by an Make all needed repairs. appropriate professional shows that the embankment needs repair. The outlet device Clogging has occurred. Clean out the outlet device. Dispose of the sediment off-site. The outlet device is damaged Repair or replace the outlet device. The receiving water Erosion or other signs of Contact the NC Division of Water damage have occurred at the Quality 401 Oversight Unit at 919- outlet. 733-1786. Sum 090133 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. Print name: Randy Martin Title: . City Manager _. Address: 706 Arendell Street, Morehead City, NC 28557 Phone: 252-720-684 Signature: . z Date: 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, —� Q In ►'i e- hi . iQ b 4,-,.:__ , a Notary Public for the State of /U0 e'I' 1 ea/o l t'A as, County of Coot-key#- , do hereby certify that R• kc , OLA3. H a f •h'rti _personally appeared before me this s 'F"'-• day of Le evy .. lo.Ji. , o--1 , and acknowledge the due execution of the forgoing wet detention basin maintenance requirements. Witness my hand and official seal, • ("41.-x--)t-g- Yk . (2c-6-4_,.i._.: 4\ , OTA.49 y Ss , f ~ 00 •I� O* SEAL, *. �T c e My commission expires i r /3ç iePoc8 , or-1°g33 Infiltration Basin Inspection and Maintenance Agreement I will keep a maintenance record on this BMP. This maintenance record will be kept in a log in a known set location. 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. Important maintenance procedures: — The drainage area will be carefully managed to reduce the sediment load to the infiltration basin. — Immediately after the infiltration basin is established,the vegetation will be watered twice weekly if needed until the plants become established(commonly six weeks). — No portion of the infiltration basin will be fertilized after the initial fertilization that is required to establish the vegetation. The vegetation in and around the basin will be maintained at a height of approximately six inches. After the infiltration basin is established,it will be inspected once a quarter and within 24 hours after every storm event greater than 1.0 inches (or 1.5 inches if in a Coastal County). Records of inspection and maintenance will be kept in a known set location and will be available upon request Inspection activities shall be perforrhed as follows. Any problems that are found shall be repaired immediately. BMP element: Potential problem: How I will,remediate the problem: 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 infiltration basin 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. The inlet device: pipe or The pipe is clogged(if Unclog the pipe. Dispose of the swale , applicable). sediment off-site. The pipe is cracked or Replace the pipe. otherwise damaged(if applicable). Erosion is occurring in the Regrade the swale if necessary to swale(if applicable). smooth it over and provide erosion control devices such as reinforced turf matting or riprap to avoid future problems with erosion. I BMP element: Potential problem: How I will remediate the problem: f The forebay Sediment has accumulated Search for the source of the and reduced the depth to 75% sediment and remedy the problem if of the original design depth possible. Remove the sediment and dispose of it in a location where it will not cause impacts to streams or the BMP. Erosion has occurred or Provide additional erosion riprap is displaced. protection such as reinforced turf matting or riprap if needed to prevent future erosion problems. Weeds are present. Remove the weeds,preferably by hand. If pesticides are used,wipe them on the plants rather than spraying. The main treatment area A visible layer of sediment Search for the source of the has accumulated. sediment and remedy the problem if possible. Remove the sediment and dispose of it in a location where it will not cause impacts to streams or the BMP. Replace any media that was removed in the process. Revegetate disturbed areas immediately. Water is standing more than Replace the top few inches of filter 5 days after a storm event. media and see if this corrects the standing water problem. If so, revegetate immediately. If not, consult an appropriate professional for a more extensive repair. Weeds and noxious plants are Remove the plants by hand or by growing in the main wiping them with pesticide(do not treatment area, spray). The embankment Shrubs or trees have started Remove shrubs or trees to grow on the embankment. immediately. An annual inspection by an Make all needed repairs. appropriate professional shows that the embankment needs repair. The outlet device Clogging has occurred. Clean out the outlet device. Dispose of the sediment off-site. The outlet device is damaged Repair or replace the outlet device, The receiving water. Erosion or other signs of Contact the NC Division of Water damage have occurred at the Quality 401 Oversight Unit at 919• I outlet. 733-1786. 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. Print name: Randy Martin • Title: City Manager Address: 706 Arendell Street, Morehead City, NC 28557 Phone: 252-726-68 Signature: or, �. Date:. Note: The legally responsible party should not be a homeowners association unless more than 50%of the lots have been sold and a resident of the subdivision has been named the president. I, t a n . g)'b( , a Notary Public for the State of /L..)or+lk Car o n. , County of Ca r.cn..e�( , do hereby certify that g , iE ct�-► . hi ar + r . , personally appeared before me this 54-41' day of Ce_t_eirvv io4,4._. , co o-/ , and acknowledge the due execution of the forgoing wet detention basin maintenance requirements. Witness my hand and official seal, rn . sfe........ . a®TAFgj„ by 0 S7��ze-UBLW ri • r r o{C,�cT coo;o SEAL s•eeetios My commission expires_ // /34o/o2._o a g . Infiltration Basin Inspection and Maintenance Agreement I will keep a maintenance record on this BMP. This maintenance record will be kept in a log in a known set location. 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.publie,and the removal efficiency of the BMP. Important maintenance procedures: — The drainage area will be carefully managed to reduce the sediment load to the infiltration basin. — Immediately after the infiltration basin is established,the vegetation will be watered twice weekly.if needed until the plants become established(commonly six weeks). — No portion of the infiltration basin will be fertilized after the initial fertilization that is required to establish the vegetation. - The vegetation in and around the basin will be maintained at a height of approximately six inches. After the infiltration basin is established,it will be inspected once a quarter and within 24 hours after every storm event greater than 1.0 inches (or 1.5 inches if in a Coastal County). Records of inspection 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. BMP element Potential problem: How I will remediate the problem: The entire BP Trash debris is present. Remove the trash/debris. The perimeter of the Areas of bare soil and/or Regrade the soil if necessary to infiltration basin 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. The inlet device: pipe or The pipe is clogged(if Unclog the pipe. Dispose of the swale , applicable). sediment off-site. The pipe is cracked or Replace the pipe. otherwise damaged(if applicable). Erosion is occurring in the Regrade the swale if necessary to swale(if applicable). smooth it over and provide erosion control devices such as reinforced turf matting or riprap to avoid Ifuture problems with erosion. IVIED I DEC 1 0 2007 BMP element: Potential problem: How I will remediate the problem: The forebay Sediment has accumulated I Search for the source of the and reduced the depth to 75% sediment and remedy the problem if of the original design depth. possible. Remove the sediment and dispose of it in a location where it will not cause impacts to streams or the BMP. Erosion has occurred or Provide additional erosion riprap is displaced. protection such as reinforced turf matting or riprap if needed to iirevent.future erosion problems. Weeds are present. Remove the weeds,preferably by hand. If pesticides are used,wipe them on the plants rather than spraying. The main treatment area A visible layer of sediment Search for the source of the has accumulated. sediment and remedy the problem if possible. Remove the sediment and dispose of it in a location where it will not cause impacts to streams or the BMP. Replace any media that was removed in the process. Revegetate disturbed areas immediately. Water is standing more than Replace the top few inches of filter 5 days after a storm event. media and see if this corrects the standing water problem. If so, revegetate immediately. If not, consult an appropriate professional for a more extensive repair. Weeds and noxious plants are Remove the plants by hand or by growing in the main wiping them with pesticide(do not treatment area. spray). The embankment Shrubs or trees have started Remove shrubs or trees to grow on the embankment. immediately. An annual inspection by an Make all needed repairs. appropriate professional shows that the embankment needs repair. The outlet device Clogging has occurred. Clean out the outlet device. Dispose of the sediment off-site. The outlet device is damaged Repair or replace the outlet device. The receiving water Erosion or other signs of Contact the NC Division of Water damage have occurred at the Quality 401 Oversight Unit at 919- outlet. 733-1786. 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 b)WQ of any problems with the system or prior to any changes to the system or responsible party. Print name: Randy Martin . Title: City Manager Address: 706 Arendell Street, Morehead City, NC 28557 Phone: 252-726-6;, ; „;--7, 7 ./,/, r Signature: .75 1 e� Date: f'2/ 0 P 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, ea n 1-'1 . g b Cam- , a Notary Public for the State of ,kJ o r 41A- C)oi'ol l'A.o, , County of Zak,-lcn.,2_ , do hereby certify that e . Ram oL. H a -fi n personally appeared before me this 1-4-- day of.pae.vm b.c./._... , 02.p crl ,and acknowledge the due execution of the forgoing wet detention basin maintenance requirements. Witness my hand and official seal, C)--44"-x-'7"- )-1<- . 9-41-44.4---. f/#,OTAR4 y fit° 20 • r '1►,•%,vT cove 0 sae, SEAL My commission expires i 1 /3o/6-ace 8 . R.F..:CF,PraTED DEC 1 0 2007 BY:5 °ri °`13i3 • _ iztotort _ `fo ,, ri . Qlp - _ Date Received Fee Paid 0ouggell Permit Number e tor] b$.1-O(o 5t3 S . 09 o 33 `07 tooc- . ci{4101(o 33S 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 L GENERAL INFORMATION 1. Applicants name(specify the name of the corporation,individual,etc.who owns the project): Town of Morehead City 2. Print Owner/Signing Official's name and title(person legally responsible for facility and compliance): • Randy Martin,City Manager 3. Mailing Address for person listed in ftem 2 above: 70¢A3rendell St City:Morehead City State:NC Zip;28557 Phone: (252 ) 726-6848 Fax: (252 ) 726-2267 Emahcitymanage}Obizec.rr.com • 4. Project Name(subdivision,facility,or establishment name-should be consistent with project name on plans,specifications,letters,operation and maintenance agreements,etc.): Morehead City Baseball Park , 5. Location of Project(street address): Mayberry Loop Road City:Morehead city County:Carteret 6. Directions to project(from nearest major intersection): From the intersection of US70 and N.20th St,travel North 1.15 miles to Mayberry Loop Road,then approximately 1000 feet West on Mayberry Loop Road,Site located op South side of street. 7. Latitude:34.7380 N Longitude:76.7347 W of project 8. Contact person who can answer questions about the project: Name:Vincent Antrilli,Jr./EL1Apa , Telephone Number: (919. ) 7811i1083 Email_vantrilii©ERApa.com_._ 11�-SO(O-6 l5 IL PERMIT INFORMATION: —RECEIVED BY: 1. Specify whether project is(check one): 111 New °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 type of project(check one): ❑Low Density ®High Density °Redevelop °General Permit °Universal SMl' °Other 4. Additional Project Requirements(check applicable blanks): °CAMA Major ►:t 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, Th &st 1.5 inks of}Stormwater Runoff will be treated to Infiltration Basins.Excess Runoff will flow through a bypass channel to a Level Spreader. 2. Sttormwater runoff from this project drains to the White Oak River basin. 3. Total Site Area: 12.71 . acres 4. Total Wetlands Area: 0.39 , acres 5. 100'Wide Strip of Wetland Area: 0.39 acres (not applicable if no wetlands exist on site) 6. Total Project Area":: 12.71 acres 7. Project Built Upon Area: 23.6 8. How many drainage areas does the project have? 3 . 9. 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, Ede "flAe . j eft*it. Basin Inforniation Drainage Ala1 Drainage Area2 Receiving Stream Name Stream Class&Index No. Drainage Area(sf) Existing Impervious*Area(sf) Proposed Impervious*Area(sf) % Impervious*Area(total) hnpervio s Aar . . Ai 1 Drainage ge Area 2 On-site Buildings(sfl On-site Streets (sf) • On-site Parking (sf) • v On-site Sidewalks (sf) Other on-site (sf) Off-site (sf) Total. (sf): *Impervious area is defined as the built upon area including,but not limited to,buildings,roads,parking areas, sidewalks,gravel areas,etc. **Total project area shall be calculated based on the current policy regarding inclusion of wetlands in the built upon area percentage calculation. (k v2. oco—t .le 10. How was the offsite impervious area listed above derived?: 2 2 es IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS One of the following 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. 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 Density Residential Subdivisions Form DRPC-6 Low Density Residential Subdivisions with Curb Outlets By your signature below,you certify that the recorded deed 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 State,and that they will be recorded prior to the sale of any Iot. 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)735083 for the status and availability of these forms. Form SW401-Low Density Low Density Supplement Form SW401-Curb Outlet System Curb Outlet System Supplement Form SWIM-Off-Site System Of Site System Supplement Form SW401 Wet Detention Basin Wet Detention Basin Supplement Form SW401-Infiltration Basin Infiltration Basin Supplement Form SWIM-Infiltration Trench Underground Infiltration Trench Supplement Form SW401-Bioretention Cell Bioretention Cell Supplement Form SW401-Level Spreader Level Spreader/Filter Strip/Restored Riparian Buffer Supplement Form SW401-Wetland Constructed Wetland Supplement Form.SW401-Grassed Swale Grassed Swale Supplement Form SW401-Sand Filter Sand Filter Supplement r..... C'17TT 1AI is._-:.«0 n,' T 3 .D4 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 http://h2o.enr.state.nc.us/su/msi maps.htm) 1. Please indicate that you have provided the following required information by initialing in the space provided next to each item. Initials • Original and one copy of the Stormwater Management Permit Application Form • Original and one copy of the Deed Restrictions&Protective Covenants Form • Original of the applicable Supplement Form(s)and O&M agreement(s)for each BlvMP T • Permit application processing fee of$505($4,000 for Express)payable to NCDENR • Calculations&detailed narrative description of stormwater treatment/management • Copy of any applicable soil report • Three 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) 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): EDApa Mailing Address: 4140 Perklake Ave,Suite 3Q0 City: Raleigh State:, NC Zip: 27612 Phone: (. 919 ) 781-1083 Fax: ( 919 ) 787-9678 Email: . VIII, APPLICANT'S CERTIFICATION 1,(print ar type name of person listed in General Information, item 2) .Randy Martin,City Manager • certify that the information included on this permit application form is,to the best of my knowledge,correct and that the project will be constructed in conformance with the approved plans,that the required deed restrictions and protective covenants will be recorded,and that proposed project complies with the requirements of 15A NCAC 2H.1000. Signature: 1 _ ' 9'2 Date: GJ r.�. . c1sTTT 1 A 1 'IY._.4 0 MI W r7l ro o, ico ¢ cav ¢3 020 boo wito00000 and c o RI 2 `0 o ii co Cs ri. >, as Qo co J� Q0No co N ii. a2 OS to OOcj0000 CD N ' = _. Q. Lnv- om Nr Lo tn ?m U C as N o arcNM C QI-: �l0) r NI,- • b_ T et m G i Cl N u mC oM to 0 u- 0 r v LO 0 0 Z • OO MOB N CO C N NI:O u. 4 � � NM mh� ir � ui .QQr Nr a O � ixi M M J oI U {; U g ,/ N\A ctif n T N' / CO aa: ie co la -, C o 8 O f0 0 <g� r CO O 1 Ct C Cr pp m e <f O r 0) L�* O C r o 1d O O N O a00 0 c) -O 2 0 o 0 0 0 r O o cc r) EL N O «666 N CO V., 6{ c N r r M N G .0 � N � r C M CO CO L 0 \ c % 25 0 ,o e -, U a5 a N iii y-J C . ., N ? m , m � CD C Q fU6 . ap r O , oN coc ‹'N NN CO a 2 M c � ' o o 2 co 0 v 0ico pia? r00 co- N-0 N c i W N a ao J "Z. I.a to cp N- 0 LO o CO Q r O C r r •+ G Q h co r r r as .4 2 m 41. ,> o � coM nr fs D z co a) as A O m c CO ca To flu a co li ° H1 LL .O r M r .0 Q O r N VN � aa)i N N U V U }S c c c t. # o I- o I-- ai c o m o 0 co Q I0 y„ N y N Q .o., fl3 O c Z Ov3 e I J I C z U US = o QS I f iin'Ii ca i iiiii: •C ytfLB1 ' occo *0 UJ a �+2 om0- cnc«? m m a> o �?CO a)E a7 C/) U) (n'.�LU a o 0 o00000 roxy, 2b .f4 u38 a Permit No. ` (to be provided by DWQ) ♦ r- w WATEG ASTORMWATER MANAGEMENT PERMIT APPLICATION FORMNCDENR 401 CERTIFICATION APPLICATION FORM INFILTRATION BASIN SUPPLEMENT This form must be filled out,printed and submitted. The Required Items Checklist(Part Ill)must be printed,filled out and submitted along with all of the required information. L PROJECT INFORMATION Project Name Morehead City'Baseball Park Contact Person Randy Martin,City Manager Phone Number 252-726-6848 Date 3-Dec-07 Drainage Area Number 2(Peak Flow includes Baseball Field but Treatment excludes Baseball Field) IIi. DESIGN UtIFORMATION• Site Characteristics Drainage area 24g 58-r r ft2 12 3 3 ` vv f c pglaS 4(�L Impervious area 42,495.00 ft2 Percent impervious 0.17 Design rainfall depth 1,5 in Peak Flow Calculations Is pre/post control of the 1-yr 24-hr peak flow required? N (Y or N) 1-yr,24-hr runoff depth 3.66 in 1•yr,24-hr intensity 0.15 in/hr Pre-development 1-yr,24-hr runoff volume 0.14 ft3/sec Post-development 1-yr,24-hr runoff volume 0.2 ft3/sec Pre/Post 1-yr,24-hr peak flow control 0.1 ft3/sec Storage Volume:Non-SR Waters Minimum design volume required 5,552 ft3 Design volume provided 7.650 ft3 OK for non-SR waters Storage Volume: SR Waters 1-yr,24-hr rainfall depth in Pre-development 1-yr,24-hr runoff ft3 Post-development 1-yr,24-hr runoff ft3 Minimum volume required ft3 Volume provided ft3 Soils Report Summary Soil type Ag Infiltration rate a 9'' in/hr ,ram u4�A� ft`I - CAL45 �1 t.1ZEl'o$j SHWT elevation 5 00 fmsl Basin Design Parameters Drawdown time 2 days 0K Basin side slopes 3 :1 OK Basin bottom elevation 7.00 fmsl OK Storage elevation a 50 fmsl Top elevation 9.00 fmsl Basin Bottom Dimensions Basin length 80 ft Basin width 40 ft Bottom SA 3115 ft2 I DEC p Z007 Form SW401-Infiltration Basin-Rev.1 Parts I.&II.Design Summary,Page 1 of 2 Permit No. SW t 09 oC 3j- (to be provided by DWQ) Additional Information Total runoff volume captured by basin 1.53 ac-in OK Length of vegetative filter for overflow. 50 ft OK Distance to structure 20 ft OK Distance from surface waters 12000 ft OK Distance from water supply well(s) n!a ft OK Separation from impervious soil layer 2 ft OK Naturally occuring soil above shwt 1 ft OK Bottom covered with 4-in of clean sand? Y (Y or N) OK Recorded drainage easement provided? Y (Y or N) OK Capures all runoff at ultimate build-out? Y (Y or N) OK Bypass provided for larger storms? Y (Y or N) OK Pretreatment device provided Swale Fonn SW401-Infiltration Basin-Rev.1 Parts I.&II.Design Summary,Page 2 of 2 Permit No. c(0 S b 9 O 1 (to be provided by DWQ) REQUIRED rr s cHEcKUsr Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will result in a request for additional information. This will delay final review and approval of the project Initial in the space provided to indicate the following design requirements have been met. If the applicant has designated an agent,the agent may initial below. If a requirement has not been met,attach justification. Page!Plan Initials Sheet No. 1. Plans(1"-50'or larger)of the entire site showing: -Design at ultimate build-out, -Off-site drainage(if applicable), -Delineated drainage basins(include Rational C coefficient per basin), -Basin dimensions, -Pretreatment system, -High flow bypass system, -Maintenance access, -Recorded drainage easement and public right of way(ROW), Overflow device,and -Boundaries of drainage easement. C 2 2. Partial plan(1"=30'or larger)and details for the infiltration basin showing: -Bypass structure, -Maintenance access, -Basin bottom dimensions, -Basin cross-section with benchmark for sediment cleanout, -Flow distribution detail for inflow, -Vegetated filter,and -Pretreatment device. `rik C-6 3. Section view of the infiltration basin(1"=20'or larger)showing: -Pretreatment and treatment areas,and -Inlet and outlet structures. 'a Cal`5 4. A table of elevations,areas,incremental volumes&accumulated volumes to verify the volume provided. ' L ?tfc'f~ 5. A soils report that is based upon an actual field investigation,soil borings,and infiltration tests. The results of the soils report must be verified in the field by DWQ,by completing&submitting the soils investigation request form. County soil maps are not an acceptable source of soils information. 'v4 e:-eort- 6. An assurance that the installed system will meet design specifications upon initial operation once the project is complete and the entire drainage area is stabilized. 7. A construction sequence that shows how the infitiration basin will be protected from sediment until the entire drainage area is stabilized. 11/4 s 8. The supporting calculations. `k4 14^a.4 9. A copy of the signed and notarized inspection and maintenance(I&M)agreement. 1.1/4. 10. A copy of the deed restriction. Form SW401-Infiltration Basin-Rev.1 Page 1 of 1 Part III.Required Items Checklist, Page 1 of 1 • Permit No.5033 orl 9 33 (to be provided by DWQ) O�oF WATe'9pG ` ` STORMWATER MANAGEMENT PERMIT APPLICATION FORM > NCDENR 401 CERTIFICATION APPLICATION FORM >'M1` INFILTRATION BASIN SUPPLEMENT This form must be filled out,printed and submitted. The Required Items Checklist(Part Ill)must be printed,filled out and submitted along with all of the required information. L PROAC1 DrowT1O Project Name Morehead City Baseball Park Contact Person Randy Martin,City Manager Phone Number 252-726-6848 — Date :3-Dec 07 Drainage Area Number 1 It. DESIGN ENFORMATION Site Characteristics Drainage area 75,892.00 ft2 Impervious area 36,316.00 ft2 Percent impervious 0.48 Design rainfall depth 1.5 in Peak Flow Calculations Is pre/post control of the 1-yr 24-hr peak flow required? N (Y or N) 1-yr,24-hr runoff depth 3.66 in 1-yr,24-hr intensity 0.15 in/hr Pre-development 1-yr,24-hr runoff volume 0.04 ft3/sec Post-development 1-yr,24-hr runoff volume 0.15 ft3/sec Pre/Post 1-yr,24-hr peak flow control 0.1 ft3/sec Storage Volume:Non-SR Waters Minimum design volume required 4,560 ft3 Design volume provided 7,650 ft3 OK for non-SR waters Storage Volume: SR Waters 1-yr,24-hr rainfall depth in Pre-development 1-yr,24-hr runoff ft3 Post-development 1-yr,24-hr runoff ft3 Minimum volume required ft3 Volume provided ft3 Soils Report Summary Soil type Ag Infiltration rate 5.30 in/hr SHWT elevation 5.00 fmsl Basin Design Parameters Drawdown time 2 days OK Basin side slopes 3 :1 OK Basin bottom elevation 7.00 fmsl OK Storage elevation 8.26 fmsl Top elevation 9.00 fmsl Basin Bottom Dimensions Basin length 80 ft Basin width 40 ft .��, Bottom SA 3,115 ft2 P EC .M�� DEC 1 0 Zoo? 11Y: Form SW401-Infiltration Basin-Rev.1 Parts I.&II.Design Summary,Page 1 of 2 Permit No. SU3 e b 109-33 (to be provided by DWQ) Additional Information Total runoff volume captured by basin 1..26 ac-in OK Length of vegetative filter for overflow 50 ft OK Distance to structure 20 ft OK Distance from surface waters 12000 ft OK Distance from water supply well(s) n/a ft OK Separation from impervious soil layer 2 ft OK Naturally occuring soil above shwt 1 ft OK Bottom covered with 4-in of clean sand? Y (Y or N) OK Recorded drainage easement provided? Y (Y or N) OK Capures all runoff at ultimate build-out? Y (Y or N) OK Bypass provided for larger storms? Y (Y or N) OK Pretreatment device provided Catch Basin Form SW401-Infiltration Basin-Rev.1 Parts I.&II.Design Summary,Page 2 of 2 Permit No. S 01 o9 33 (to be provided by DWQ) !Il" REQUIRED ma CHECKLIST Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to indicate the following design requirements have been met. If the applicant has designated an agent,the agent may initial below. If a requirement has not been met,attach justification. Pagel Plan Initials Sheet No. 14( e— 1. Plans(1"-50'or larger)of the entire site showing: -Design at ultimate build-out, -Off-site drainage(if applicable), -Delineated drainage basins(include Rational C coefficient per basin), -Basin dimensions, -Pretreatment system, -High flow bypass system, -Maintenance access, -Recorded drainage easement and public right of way(ROW), -Overflow device,and DD// -Boundaries of drainage easement. U� 2. Partial plan(1"=30'or larger)and details for the infiltration basin showing: -Bypass structure, -Maintenance access, -Basin bottom dimensions, -Basin cross-section with benchmark for sediment cleanout, -Flow distribution detail for inflow, -Vegetated filter,and -Pretreatment device. ° 3. Section view of the infiltration basin(1"=20'or larger)showing: -Pretreatment and treatment areas,and -Inlet and outlet structures. ✓� Co(c5 4. A table of elevations,areas,incremental volumes&accumulated volumes to verify the volume provided. �`� erf- 5. A soils report that is based upon an actual field investigation,soil borings,and infiltration tests. The results of the soils report must be verified in the field by DWQ,by completing&submitting the soils - investigation request form. County soil maps are not an acceptable source of soils information. 4" /�4 o(4- 6. An assurance that the installed system will meet design specifications upon initial operation once the project is complete and the entire drainage area is stabilized. (2-49of f- 7. A construction sequence that shows how the infitlration basin will be protected from sediment until the A entire drainage area is stabilized. c1,01 8. The supporting calculations. q h+ 9. A copy of the signed and notarized inspection and maintenance(I&M)agreement. � - 10. A copy of the deed restriction. Form SW401-Infiltration Basin-Rev.1 Page 1 of 1 Part III.Required Items Checklist,Page 1 of 1 r� Permit No. 0 l 0�IQ 53 (to be provided by DWQ) apF wa�Tpq .r��F" o ��, STORMWATER MANAGEMENT PERMIT APPLICATION FORM JUJlX9 NCDENR 401 CERTIFICATION APPLICATION FORM INFILTRATION BASIN SUPPLEMENT This form must be filled out,printed and submitted. The Required Items Checklist(Part Ill)must be printed,filled out and submitted along with all of the required information. I. PROJECT SNFORMATION Project Name Morehead City Baseball Pant Contact Person Randy Martin,City Manager Phone Number 252- g48 Date .37 Drainage Area Number 3(NE grassed and wetland area has been excepted out of this draiange area) II. DESIGN INFORMATION . - • Site Characteristics Drainage area 114,440:00 ft2 Impervious area 51,082.00 ft2 Percent impervious 0.45 Design rainfall depth 1.5 in Peak Flow Calculations Is pre/post control of the 1-yr 24-hr peak flow required? N (Y or N) 1-yr,24-hr runoff depth 3 66 in 1-yr,24-hr intensity 0.15 in/hr Pre-development 1-yr,24-hr runoff volume 0.1 ft3/sec Post-development 1-yr,24-hr runoff volume 0.21 ft3/sec Pre/Post 1-yr,24-hr peak flow control 0.1 ft3/sec Storage Volume:Non-SR Waters Minimum design volume required 6.462 ft3 Design volume provided 14,185 ft3 OK for non-SR waters Storage Volume: SR Waters 1-yr,24-hr rainfall depth in Pre-development 1-yr,24-hr runoff ft3 Post-development 1-yr,24-hr runoff ft3 Minimum volume required ft3 Volume provided ft3 Soils Report Summary Soil type Ag Infiltration rate 3.50 in/hr SHWT elevation 5.00 fmsl Basin Design Parameters Drawdown time 2 days OK Basin side slopes 3 :1 OK Basin bottom elevation 7.00 fmsl OK Storage elevation 7.98 fmsl Top elevation 9.00 fmsl Basin Bottom Dimensions Basin length 77 ft Basin width 53 ft Bottom SA 6,135 ft2 FRECTC. IVED DEC 1 0 2001 Form SW401-Infiltration Basin-Rev.1 Parts I.&II.Design Summary,Page 1 of 2 Permit No. S u- C)9 69 33 (to be provided by DWQ) Additional Information Total runoff volume captured by basin 1.78 ac-in OK Length of vegetative filter for overflow 50 ft OK Distance to structure 30 ft OK Distance from surface waters 12000 ft OK Distance from water supply well(s) n!a ft OK Separation from impervious soil layer 2 ft OK Naturally occuring soil above shwt 1 ft OK Bottom covered with 4-in of clean sand? Y (Y or N) OK Recorded drainage easement provided? Y (Y or N) OK Capures all runoff at ultimate build-out? Y (Y or N) OK Bypass provided for larger storms? Y (Y or N) OK Pretreatment device provided Swale Form SW401-Infiltration Basin-Rev.1 Parts I.&II.Design Summary,Page 2 of 2 Permit NO.SCO3Q 09 3 (to be provided by DWQ) M. REQUIRED ITEMS CHECKLIST Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to indicate the following design requirements have been met. If the applicant has designated an agent,the agent may initial below. If a requirement has not been met,attach justification. Page/Plan InitialsIn� Sheet No. `l/4 1. Plans(1"-50'or larger)of the entire site showing: -Design at ultimate build-out, -Off-site drainage(if applicable), -Delineated drainage basins(include Rational C coefficient per basin), -Basin dimensions, -Pretreatment system, -High flow bypass system, -Maintenance access, Recorded drainage easement and public right of way(ROW), -Overflow device,and -Boundaries of drainage easement. gy4 e 2. Partial plan(1"=30'or larger)and details for the infiltration basin showing: -Bypass structure, Maintenance access, -Basin bottom dimensions, Basin cross-section with benchmark for sediment cleanout, -Flow distribution detail for inflow, -Vegetated filter,and -Pretreatment device. �a 3. Section view of the infiltration basin(1"=20'or larger)showing: -Pretreatment and treatment areas,and -Inlet and outlet structures. to CKfc s 4. A table of elevations,areas,incremental volumes&accumulated volumes to verify the volume provided. 114 go 5. A soils report that is based upon an actual field investigation,soil borings,and infiltration tests. The results of the soils report must be verified in the field by DWQ,by completing&submitting the soils investigation request form. County soil maps are not an acceptable source of soils information. e-teer 6. An assurance that the installed system will meet design specifications upon initial operation once the project is complete and the entire drainage area is stabilized. tive l-o p e r i' 7. A construction sequence that shows how the infttration basin will be protected from sediment until the entire drainage area is stabilized. 447 i4441atkei 8. The supporting calculations. 'iya A .4 9. A copy of the signed and notarized inspection and maintenance(I&M)agreement. NM 10. A copy of the deed restriction. Form SW401-Infiltration Basin-Rev.1 Page 1 of 1 Part III.Required Items Checklist,Page 1 of 1