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HomeMy WebLinkAboutSW8901210_CURRENT PERMIT_20120316STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO. SW8 90120 DOC TYPE CURRENT PERMIT ❑ APPROVED PLANS ❑ HISTORICAL FILE ❑ COMPLIANCE EVALUATION INSPECTION DOC DATE 20 i z o 3�u YYYYMMDD r� NCDENR North Carolina Department of Environment and Natural Resources Beverly Eaves Perdue Governor March 16, 2012 Ronald McNeil, Managing Partner S & R Partnership 2320 Forty -First Street Wilmington, NC 28403 Division of Water Quality Charles Wakild, P. E. Director Subject: Stormwater Permit No. SW8 901210 Renewal Liberty Commons High Density Subdivision Project New Hanover County Dear Mr. McNeil: Dee Freeman Secretary The Wilmington Regional Office received a complete 8 year Stormwater Management Permit Renewal Application for Liberty Commons on February 22, 2012. This site was inspected on March 15, 2012. As noted in the enclosed inspection report the site is currently in compliance with the terms and conditions of the current state stormwater permit. The Division is hereby notifying you that permit SW8 901210 has been renewed on March 16, 2012, and shall be effective until April 16, 2020. The plans previously approved on April 16, 1991, in accordance with the regulations set forth in Title 15A NCAC 2H.1000 effective September 1, 1995, remain in full force and effect. Please attach this cover letter and new page 2 of the permit to your High Density Permit originally issued on April 16, 1991. This permit is subject to the conditions and limitations as specified therein. Please pay special attention to the conditions listed in this permit regarding the Operation and Maintenance of the BMP(s), recordation of deed restrictions, procedures for changes of ownership, transferring the permit, and renewing the permit. Failure to establish an adequate system for operation and maintenance of the stormwater management system, to record deed restrictions, to transfer the permit, or to renew the permit, 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 by filing a written petition with the Office of Administrative Hearings (OAH). The written petition must conform to Chapter 150E of the North Carolina General Statutes, and must be filed with the OAH within thirty (30) days of receipt of this permit. You should contact the OAH with all questions regarding the filing fee (if a filing fee is required) and/or the details of the filing process at 6714 Mail Service Center, Raleigh, NC 27699-6714, or via telephone at 919-431-3000, or visit their website at www.NCOAH.com. 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 Chris Baker, or me at (910) 796-7215. Sincerely, Georgette Scott Stormwater Supervisor Division of Water Quality GDS/csb: S:IWQS1Stormwater\Permits & Projects119901901210 HM2012 03 req_ren 901210 cc: Phil -Norris, P. E., Norris & Tunstall Consulting Engineers, P. C. ( Wilmington Regional Office Wilmington Regional Office 127 Cardinal Drive Extension, Wilmington, North Carolina 28405 1�7One t, 1 Phone: 910-796-72151 FAX: 910-350-20041 Customer Service: 1-877-623-6748 1 � O1-thC aCOlina Internet: w .nmalerquality.org Naturally An Eaual O000nunily 1 Atfrma6ve Acwn Emolorer March 16, 2012 Liberty Commons SW8 901210 STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF WATER QUALITY STATE STORMWATER MANAGEMENT PERMIT HIGH DENSITY COMMERCIAL 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 S & R Partnership Liberty Commons 2320 Forty -First Street, Wilmington, New Hanover County FOR THE construction, operation and maintenance of a wet detention pond 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. The permit is hereby renewed subject to the following addendums, clarifications, conditions and limitations: 1. The original permit conditions contained in the permit issued on April 16, 1991 remain in full force and effect, except as amended herein. (An additional copy of this original Permit can be obtained from the Division of Water Quality, Wilmington Regional Office.) 2. This permit shall be effective from the date of issuance until April 16, 2020. 3. The permittee shall submit a permit renewal application request at least 180 days prior to the expiration date of this permit. The renewal request must include the applicable documentation and the processing fee. 4. Decorative spray fountains are allowed in a wet detention pond,subject to the following criteria: a. The fountain must draw its water from less than 2' below the permanent pool surface. b. Separated units, where the nozzle, pump and intake are connected by tubing, may be used only if they draw water from the surface in the deepest part of the pond. c. The falling water from the fountain must be centered in the pond, away from the shoreline. d. The maximum horsepower for a fountain in this pond is 1/8 horsepower. e. A fountain is not allowed if the permanent pool volume of the pond is less than 30,000 cubic feet. 5. If the use of permeable pavement is desired, this permit must be modified to add the permeable pavement conditions. Operations and Maintenance Verification I acknowledge and agree by my signature below that I am responsible for the performance of the maintenance procedures listed in the original Operations and Maintenance Agreement. I agree to notify DWQ of any problems with the system or prior to any changes to the system or responsible party. Print name:Ronald McNeill Title:Manaeing Partner / S&R Partnership Address:2320 Forty -First Street, Wilminpton, NC 28403 Date: '�- Rio - /,7, 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, M, 6t7e j lam. yd �g. , a Notary Public for the State of N _C County of Ale w 14A i our , do hereby certify that %fin r-I c0 p12 L AJ-ed l personally appeared before me this day of Feb AD of and acknowledge the due execution of the forgoing stormwater BMP maintenance requirements. Witness my hand and official seal, Notary Signature: 1171C My commission expires: %1�I/a� y o2Ol y ECG'VE'. FEB 2 2 2012 BY: Form SWU-102 (Renewal Form) Rev 06May2010 Page 3 of POND MAINTENANCE REQUIREMENTS Project Name: Lihe Commanc Financinn-Abbouner AdHitqnnfRr4gbtmnrP. Project Number: Responsible Party: S & R Partnership Phone Number: 910-350-1980 Address: 2320 41st Street, Wilmington, NC 28403 I. Inspect monthly, or after every runoff -producing rainfall event, whichever comes first A. Remove debris from the trash rack. B. Check and clear the orifice of any obstructions. If a pump is used as the drawdown mechanism, check for pump operation. C. Check the pond side slopes; remove trash, repair eroded areas before the next rainfall even. D. If the pond is operated with a vegetated filter, check the filter for sediment accumulation, erosion and proper operation of the flow spreader mechanism. Repair as necessary. Quarterly A. Inspect the collection system (i.e., catch basin, piping, grassed swales) for proper functioning. Clear accumulated trash from basin grates and basin bottoms, and check piping for obstructions. B. Check pond inlet pipes for undercutting, replace riprap, and repair broken pipes. C. Reseed grassed males, including the vegetated filter if applicable, twice a year as necessary. Repair eroded areas immediately. III. Every 6 months A. Remove accumulated sediment from the bottom of the outlet structure. B. Check the pond depth at various points in the pond. If depth is reduced to 75% of original design depth, sediment will be removed to at least original design depth, 2.6 feet. STORMWATER uL DEC 2 31997 D DE PROJ # C�_ I POND MAINTENANCE REQUIREMENTS CONTINUED PAGE 2 N. General A. Mow the side slopes, not including normally submerged vegetated shelf, according to the season. Maximum grass height will be 6" B. Cattails, and other indigenous wetland plants, are encouraged along the pond perimeter; however, they must be removed when they cover the entire surface area of the pond. C. The orifice is designed to draw down the pond in 2-5 days. If drawdown is not accomplished in that time, the system may be clogged. The source of the clogging must be found and eliminated. D. All components of the detention pond system must be kept in good working order. V. Special Requirements. hereby acknowledge that I am the financially responsible party for maintenance of this detention pond. I will perform the maintenance as outlined above, as part of the Certification of Compliance ormwater Regulations received for this project. Signature: 01 Date: 1, J 2r i 0. `M . Co l trmt v% , a Notary Public for the State of INy e+i\ `A I•o I � A 0.. County of 'hLL J 9A N o J G✓ do hereby certify that to AD, 1 :C `'11 t i I I personally appeared before me this e2 Zvi day of De ce m 192 r 196, and acknowledge the due execution of the foregoing instrument. Witness my hand and official se ....�, �.w. SiM C01 r"*% v 080 SEAL s� PUBLIC s` My Commission Expires: 7 -aco a cba �a• POND MAINTENANCE REQUIREMENTS Project Name: 1.ihFriy rnmmnnc Finanainn-Abhr' nr Additinn/Rrifirm r project Number: Responsible Party: S & R Partnership Phone Number: 910-350-1980 Address: 2320 41st Street, Wilmington, NC 28403 I. Inspect monthly, or after every runoff -producing rainfall event, whichever comes first A. Remove debris from the trash rack. B. Check and clear the orifice of any obstructions. If a pump is used as the drawdown mechanism, check for pump operation. C. Check the pond side slopes, remove trash, repair eroded areas before the next rainfall event. D. If the pond is operated with a vegetated filter, check the filter for sediment accumulation, erosion and proper operation of the flow spreader mechanism. Repair as necessary. II. Quarterly A. Inspect the collection system (i.e., catch basin, piping, grassed swales) for proper functioning. Clear accumulated trash from basin grates and basin bottoms, and check piping for obstructions. B. Check pond inlet pipes for undercutting, replace riprap, and repair broken pipes. C. Reseed grassed swales, including the vegetated filter if applicable, twice a year as necessary. Repair eroded areas immediately. III. Every 6 months A. Remove accumulated sediment from the bottom of the outlet structure. B. Check the pond depth at various points in the pond. If depth is reduced to 75% of original design depth, sediment will be removed to at least original design depth, 2.6 feet. STORMWATER nD E C E I V E 1 DEC 2 31997 D PROJ # �/LMC LIBERTY COMMONS REST HOME OPERATION AND MAINTENANCE PROCEDURES FOR STORMWATER RETENTION FACILITY Project Address: 2320 41st Street Wilmington, NC 28403 Owner: S& R Partnership 506A East Jefferson Street W U Whiteville, NC 28472 DEC 1 9� 1"0 Mr. John McNeill, Jr. D E M (919) 652-3065 YROJ 2I11 Engineer: Talbert & Bright, Inc. • 321 North Front Street Wilmington, NC 28401 (919) 763-5350 ATTN: R. Daniel Latta, PE General Description: The project consists of construction of an 18,450 square foot addition to the existing building and additional parking areas, walks and miscellaneous site improvements. The existing stormwater detention pond will be enlarged and a new outlet structure and vegetative Swale constructed to handle this project plus the runoff from a future additional wing and parking area. The revised pond is designed to meet both the State stormwater regulations (water quality) and City of Wilmington requirements (quantity) for the ultimate development of the project. Controlled release of the first one inch of runoff from the impervious surfaces is through an orifice on a negatively sloped outlet pipe. Operation: The wet detention pond is designed to maintain a permanent water pool with an average depth of 3.5 feet. The pond is designed to temporarily store an amount of water equivalent to 1 inch of storm water runoff from the impervious areas above the normal pool. In the event of a 1 inch rainfall, the wet detention pond is designed such that the water surface will rise approximately 1.50 feet above the normal pool level. This increase in water depth wil] slowly recede to the normal pool level in a two to three day time period. This drawdown time is controlled by a 1 : inch diameter PVC drawdown pipe submerged 1 foot below the normal pool elevation to reduce the possible accumulation of trash on the orifice. In rain events which produce more than the I inch runoff, excess runoff will be routed over a riser weir to a vegetative swale downstream of the pond outlet. This diversion system is Liberty Commons Rest Home Page 2 designed based on the ten year frequency storm event. Additional storage is provided for containing the 50 year storm to conform with the City of Wilmington stormwater regulations. An emergency spillway is provided for storm events in excess of a 50 year magnitude. Maintenance: Several areas will need attention by Owner's maintenance personnel for the continued performance of this system as designed and as required by the Division of Environmental Management. These items are detailed as follows: 1. Grassing around the wet detention pond shall be maintained to prevent the erosion of these areas. The areas shall be periodically mowed to maintain the aesthetic quality of the site and to prevent a reduction in capacity of the storm water system. 2. Landscaping of the areas around the wet detention pond shall be of the type and located such that it will not reduce the capacity or operation of the storm water system. 3. Following each rain event at the site, the drawdown tube orifice shall be checked for accumulation of debris and cleared of any blockage that is present. If the water level following a rain event fails to recede to the normal pool elevation within the two to five day time period, the Engineer must be notified as soon as possible. If the water level fails to recede within a period of five days following a rain event, the Owner must notify the Division of Environmental Management, 7225 Wrightsville Avenue, Wilmington, NC (919) 256-4161. 4. Storm drainage pipes and culverts shall be inspected periodically for debris and sand build-up. These shall be cleaned as necessary to provide for the conveyance of storm water as designed. 5. The wet detention pond depth shall be maintained at the design depth. The pond shall be inspected a minimum of every six months and cleaned as necessary. 6. No modifications shall be made to the system without notification of the Engineer or approval from the Division of Environmental Management. Liberty Commons Rest Home Page 3 Party Responsible for Maintenance of Stormwater Management System: S & R PARTNERSHIP ate ' ENGINEER'S CERTIFICATION I, R. Daniel Latta, as a duly registered Professional Engineer in the State of North Carolina, having been authorized to observe periodically the construction of the project, Liberty Commons Rest Home, Phase II New Hanover County 'Stormwater-Prof ect-No. 901210) for Ballard McKim & Sawyer Architects on behalf of S&R Partnership hereby state that, to the best of my knowledge and belief, 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 o the ap rove tans and specifications. Signature Registration Number 9S3¢ 'yQ '4j Date /G D� /7cl1 SEAT 9534 DANI(� DWQ USE ONLY Date Received Fee Paid Permit Number State of North Carolina Department of Environment and Natural Resources Division of Water Quality STORMWATER MANAGEMENT PERMIT RENEWAL APPLICATION FORM This form may be photocopied for use as an original I. GENERAL INFORMATION 1. Stormwater Management Permit Number: SW8 901210 MOD 2. Permit Holder's name (specify the name of the corporation, individual, etc.): S&R Partnership 3. Print Owner/Signing Official's name and title (person legally responsible for permit): Ronald McNeill Managing_ Partner 4. Mailing Address for person listed in item 2 above: 2320 Forty-first Street City:Wilmington State:NC Zip:28403 Phone: (910 1 350-1980 Fax: Email:N/A 5. Project Name: Liberty Commons 6. Location of Project (street address): 2320 Fortes -first Street City:Wilmington County:New Hanover Zip:28403 7. Directions to project (from nearest major intersection): II. PERMIT INFORMATION: 1. Specify the type of stormwater treatment: ❑Constructed Wetland ❑Bioretention ®Wet Detention Basin ❑Dry Detention Basin ❑Infiltration Basin ❑Infiltration Trench ❑Sand Filter ❑Other: 2. List any changes from project that was originally approved (attach additional pages if needed): :GEE E' FEB 2 2 2012 Form SWU-102 (Renewal Fonn) Rev 06May2010 Pagel of 3 .I 3. Do you have a copy of the original Operation and Maintenance Agreement? (check one) ®Yes (If yes, submit the attached (page 3) Operations and Maintenance verification sheet.) ❑No (If no, then submit a new Operations and Maintenance Agreement that can be located on the Division of Water Quality Home Page under the BMP Manual link: http://h2o.enr.state.nc.us/su/bmp—forms.htm) III. 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://portal.ncdenr.org/web/wq/ws/su/mapssl 1. Please indicate that you have provided the following required information by initialing in the space provided next to each item. Initials • Original & 1 copy of the Stormwater Management Permit Renewal Application Form • Application fee of $505.00 (made payable to NCDENR) �1J • Operation & Maintenance Verification or a new O&M Agreement • SWU-101 Application Form (if requesting a modification to the permit) A11,9 2. If you are also requesting a ownership change or a name change then also submit the "State Stormwater Name Ownership change Form' available at: http://portal.ncdenr.org/web/wq/ws/su/statesw/forms dots. When requesting a permit ownership change please make sure that all signatures and initials for both parties are filled in on this form or the transfer cannot be completed and the original owner will remain as the permit holder. VI. APPLICANT'S CERTIFICATION I, (print or type name of person listed in General Information, item 3) Ronald McNeill certify that 1 have a copy of the Permit and O&M Agreement on -site and that the information included on this permit renewal application is, to the best of my knowledge, correct and complete. i 2-16-12 Note: Additional copies of the original permit can be obtained from the appropriate Regional Office of the Division of Water Quality. (httl2://portal.ncdenr.org/web/`wqihonie/ro) ECEIVE FEB 2 2 2012 Form SWU-102 (Renewal Form) Rev 06May2010 Page 2 of 3 I Engineer's Certification I, Carl H. Farmer, Jr., as a duly registered Professional Engineer in the State of North Carolina, having been authorized to observe periodically the construction of the project, Stormwater Control Facilities, McNeill Rest Home, Wilmington, North Carolina, hereby state that to the best of my abilities, due care and diligence were used in the observation of the project construction such that the construction was observed to be built within substantial compliance and intent of the approved plans and specifications. Signature A Registration Number 8406 Date: May 3, 1991 MAy 61991 VrIlmingwn Baglonal p01eo Der?