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HomeMy WebLinkAboutSW8970713_HISTORICAL FILE_19980109STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO. SWS o11p-AV) DOC TYPE ❑ CURRENT PERMIT ❑ APPROVED PLANS m HISTORICAL FILE ❑ COMPLIANCE EVALUATION INSPECTION DOC DATE k0kcIgS C310cl YYYYMMDD State of North Carolina Department of Environment and Natural Resources Wilmington Regional Office James B. Hunt, Jr., Governor Wayne McDevitt, Secretary Division of Water Quality January 9, 1998 Mr. Nathan Sanders, President Sanco of Wilmington PO Box 3167 Wilmington, NC 28406 NC®ENR NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES Subject: Permit No. SW8 970713 Antiqua Apartments High Density Commercial Stormwater Project New Hanover County Dear Mr. Sanders: The Wilmington Regional Office received the Stormwater Management Permit Application for Antiqua Apartments on July 14, 1997, with final information on November 12, 1997. 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 970713 dated January 9, 1998, for the construction of Antiqua Apartments. This permit shall be effective from the date of issuance until January 9, 2008, and shall be subject to the conditions and limitations as specified therein. Please pay special attention to the Operation and Maintenance requirements in this permit. Failure to establish an adequate system for operation and maintenance of the stormwater management system will result in future compliance problems. If any parts, requirements, or limitations contained in this permit are unacceptable, you have the right to request an adjudicatory hearing upon written request within thirty (30) days following receipt of this permit. This request must be in the form of a written petition, conforming to Chapter 150B of the North Carolina General Statutes, and filed with the Office of Administrative Hearings, P.O. Drawer 27447, Raleigh, NC 27611-7447. Unless such demands are made this permit shall be final and binding. If you have any questions, or need additional information concerning this matter, please contact Linda Lewis, or me at (910) 395-3900. Sincerely, Q-i'C lL S �,I'.,tt- Rick Shiver, P.G. Acting Regional Water Quality Supervisor RSS/arl: S:\WQS\STORMWAT\PERMIT\970713.JAN cc: Jeff Malpass Tony Roberts, New Hanover County Inspections Beth Easley, New Hanover County Engineering Linda LLewis _ Wilmington Regional-Office� Central Files 127 North Cardinal Dr., Wilmington, North Carolina 28405 Telephone 910-395-3900 FAX 910-350-2004 An Equal Opportunity Affirmative Action Employer 50% recycled/10% post -consumer paper 1W State Stormwater Management Systems Permit No. SW8 970713 STATE OF NORTH CAROLINA . DEPARTMENT OF ENVIRONMENT AND NATURAL 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 Sanco of Wilmington Antigua Apartments New Hanover County FOR THE construction, operation and maintenance of a 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. This permit shall be effective from the date of issuance until January 9, 2008 and shall be subject to the following specified conditions and limitations: I. DESIGN STANDARDS 1. This permit is effective only with respect to the nature and volume of stormwater described in the application and other supporting data. 2. This stormwater system has been approved for the management of stormwater runoff as described on page 3 of this permit, the Project Data Sheet. The stormwater control has been designed to handle the runoff from 292,850 square feet of impervious area. 3. Approved plans and specifications for this project are incorporated by reference and are enforceable parts of the permit. 4. The tract will be limited to the amount of built -upon area indicated on page 3 of this permit, and per approved plans. 2 State Stormwater Management Systems Permit No. SW8 970713 Project Name: Permit Number: Location: Applicant: Mailing Address: DIVISION OF WATER QUALITY PROJECT DATA SHEET Antiqua Apartments 970713 New Hanover County Mr. Nathan Sanders, President Sanco of Wilmington PO Box 3167 Wilmington, NC 28406 Application Date: July 14, 1997 Water Body Receiving Stormwater Runoff: Barnards Creek Classification of Water Body: "C Sw" If Class SA, chloride sampling results: Pond Depth, feet: Permanent Pool Elevation, FMSL: Total Impervious Surfaces, ftz: Outparcels, ftz Future, ftz Offshe Area entering Pond, ftz: Required Surface Area, ftz: Provided Surface Area, ftz: Required Storage Volume, ft3: Provided Storage Volume, ft3: Temporary Storage Elevation, FMSL: Controlling Orifice: N/A 7.5 10 292,850 n/a n/a rerouted, per Engineer 9,423 15,073 23,873 30,699 11.5 2" pipe State Stormwater Management Systems Permit No SWS 970713 5. The permittee is responsible for verifying that the proposed built -upon area does not exceed the allowable built- _ upon area. 6. The following items will require a modification to the permit: a. Any revision to the approved plans, regardless of size. b. Project name change. C. Transfer of ownership. d. Redesign or addition to the approved amount'of built -upon area. e. Further subdivision of the project area. f. Filling in, altering, or piping of any vegetative conveyance shown on the approved plan. In addition, the Director may determine that other revisions to the project should require a modification to the permit. 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. II. SCHEDULE OF COMPLIANCE The permittee will comply with the following schedule for construction and maintenance of the stormwater management system: a. The stormwater management system shall be constructed in it's entirety, vegetated and operational for it's intended use prior to the construction of any built -upon surface except roads. During construction, erosion shall be kept to a minimum and any eroded areas of the system will be repaired immediately. 2. The permittee shall at all times provide the operation and maintenance necessary to assure the permitted stormwater system functions at optimum efficiency. The approved Operation and Maintenance Plan must be followed in its entirety and maintenance must occur at the scheduled intervals including, but not limited to: a. Semiannual scheduled inspections (every 6 months). b. Sediment removal. C. Mowing and revegetation of side slopes. d. Immediate repair of eroded areas. e. Maintenance of side slopes in accordance with approved plans and specifications. f. Debris removal and unclogging of outlet structure, orifice device and catch basins and piping. g. Access to the outlet structure must be available at all times. 3. 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. 4. This permit shall become voidable unless the facilities are constructed in accordance with the conditions of this permit, the approved plans and specifications, and other supporting data. El State Stormwater Management Systems Permit No SW8 970713 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. 6. A copy of the approved plans and specifications shall be maintained on fide by the Permittee for a minimum of ten years from the date of the completion of construction. Prior to the sale of any portion of the property, an access/maintenance easement to the stormwater facilities shall be granted in favor of the permittee if access to the stormwater facilities will be restricted by the sale of any portion of the property. III. GENERAL CONDITIONS 1. This permit is not transferable. In the event there is a desire for the facilities to change ownership, or there is a name change of the Permittee, a formal permit request must be submitted to the Division of Water Quality accompanied by an application fee, documentation from the parties involved, and other supporting materials as may be appropriate. The approval of this request will be considered on its merits and may or may not be approved. 2. Failure to abide by the conditions and limitations contained in this permit may subject the Permittee to enforcement action by the Division of Water Quality, in accordance with North Carolina General Statute 143-215.6A to 143- 215.6C. 3. The issuance of this permit does not preclude the Permittee from complying with any and all statutes, rules, regulations, or ordinances which may be imposed by other government agencies (local, state, and federal) which have jurisdiction. 4. In the event that the facilities fail to perform satisfactorily, including the creation of nuisance conditions, the Permittee shall take immediate corrective action, including those as may be required by this Division, such as the construction of additional or replacement stormwater management systems. 5. The permittee grants DENR Staff permission to enter the property for the purpose of inspecting all components of the permitted stormwater management facility. 6. The permit may be modified, revoked and reissued or terminated for cause. The filing of a request for a permit modification, revocation and reissuance or termination does not stay any permit condition. Permit issued this the 9th day of January, 1998. NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION Ck i c_ L"'_ S h iy er t- r0 l� A. Preston Howard, Jr., P.E., Director Division of Water Quality By Authority of the Environmental Management Commission Permit Number SW8 970713 State Stormwater Management Systems Permit No. SW8 970713 Antiqua Apartments Stormwater Permit No. SW8 970713 New Hanover County Engineer's Certification h — as -a duly registered Professional Engineer in the State of North Carolina, having been authorized to observe (periodically/weekly/full time) the construction of the project, 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. Noted deviations from approved plans and specification: Signature Registration Number Date SEAL ri 1 DIVISION OF ENVIRONMENTAL MANAGEMENT NORTII CAROLINA STORMWATER MANAGEMENT PERMIT APPLICATION /I. GENERAL INFORMATION 1. Project Name/1+6 Ug 2. Location, directions to project (include County, Address, State Road) Attach map._ /Vpw 9r, we r off 3. Owner's Name Phone 4. Owner's Mailing Address City �00 5. Application date � — 9 -7 _State /V L ' zip Fee enclosed $ ? 8S 6.NearestReceiving Stream 60'rnnrIJ c cc"h Class C tti- 7. Projectdescription iU �ii �� , l l fps 'e.{OJI � l IL PERI\TIT INFORMATION I. PermilNo.fro 2. Permit Type ✓ New Renewal Modification (existing Permit No. 3. Project Type: _Low Density L/— etention_ Infiltration Other:_ Redevelop _General Dir Cert 4. Other State/Federal Permits/Approvals Required (Check appropriate blanks) CAMA Major SedimentationlErosion Control L---� 404 Permit III. BUILT UPON AREA (please see NGC 211.1005 thru .1007for applicable density limits) Drainage Drainage Breakdown of Impervious Area Basin Basin (please indicate below the 'erign impery ous area) Classification Buildings— I Allowable Impervious Area _ N�{fj Stress nZ a )J o S, t; Total Project Area Proposed Impervious Area % Impervious Area 10,73e y, rv. .$ I'ORMWATER TREATMENT (Describe how the runoff will be treated) Parkin,/Sw--aq 00 Other. Totals V. DEED RESTRICTIONS AND PROTECTIVE COVENANTS Deed restrictions and protective covenants are required to be recorded for all low density projects and all subdivisions prior to the sale of any lot. Please see Attachment A for the specific items that must be recorded for the type of project applied for. By your signature below, you certify that the recorded deed restrictions and protective covenants for this project shall include all the items required by the permit, that the covenants will be binding on all parties and persons claiming under them, that they will run with the land, that the covenant cannot be changed or deleted without concurrence from the State, and that they will be recorded prior to the sale of any lot. VI. OWNER'S CERTIFICATION 1 / V fj%Nr¢N /' 5�NQ'5/ts certify that the information included on this permit (Please print or type name clearly) application form is correct, that the project will be constructed in conformance with the approved plans, that the deed restrictions will be recorded with all required permit conditions, and that to the best of my knowledge, the proposed project complies with the requirements of 15A NCAC 2H.1000. I authorize the below named per n o� to submit stormwater plans on my behalf. t caner/Authoriz gent Signature and Title Date VII. AGENT AUTHORIZATION (MUST B6 COMPLETED) Person or firm name Hanover 0R56 A 5ew1't;.s / , t". Mailing Address In. r Sireat City State N.C. Zip aV/-3 6 Phone Please submit application, fee, plans and calculations to the appropriate Regional Office. cc: Applicant/WiRO//Central Files Office use only JUL 14 1997 1 1 J& a POND MAINTENANCE REQUHMVIENTS p E C E I V E Project Name: An 1 i ug AUG 191997 D Permittee: 5n✓1 Lo o T W r I M n A To h PROJ N D E_�_ Address: n, O, ikon 3I 61 �M,���oh N C . a` qc)6 PhoneNo 9lO-7'II —//9 I. Monthly, or after every runoff producing rainfall event, whichever comes first: A. Inspect the trash rack; remove accumulated debris, repair/replace if it is not functioning. B. Inspect and clear the orifice of any obstructions. If a pump is used as the drawdown mechanism,, pump operation will be checked. A log of test runs of the pump will be kept on site and made available to DWQ personnel upon request. C. Inspect the pond side slopes and grassed inlet swales; remove trash, and repair eroded areas before the next rainfall event. D. If the pond is operated with a vegetated filter, the filter will be checked for sediment accumulation, trash accumulation, erosion and proper operation of the flow spreader mechanism. Repairs/cleaning will be done as necessary. II. Quarterly (Four times a year): A. Inspect the collection system (ie. catch basins, piping, grassed swales) for proper functioning. Accumulated trash will be cleared from basin grates, basin bottoms, and piping will be checked for obstructions and cleared as required. B. Pond inlet pipes will be checked for undercutting. Riprap or other energy dissipation structures will be replaced, and broken pipes will be repaired. III. Semi-annually (twice a year): A. Accumulated sediment from the bottom of the outlet structure will be removed. B. The forebay depth will be checked at various points. Sediment removal is required when the depth is reduced to 75 % of the original forebay design depth of 7, S C. Grassed swales, including the vegetated filter if applicable, will be reseeded twice a year as necessary. POND MAINTENANCE REQUIREMENTS PAGE 2 IV. Annually (Once a year): a A. The pond depth will be checked at various points. Sediment removal is required when the depth is reduced to 75 % of the original design depth or 3', whichever is greater. Design depth is '-I,5 ', measured vertically from the orifice down to the pond's bottom. Sediment must be removed to at least the original design depth. V. General A. Mowing of the side slopes will be accomplished according to the season. Maximum grass height will he 6". B. Cattails are encouraged along the pond perimeter, however they will be removed when they cover more than 1/2 the surface area of the pond. The best time to cut them is at the end of the growing season, in November. Environmentally sensitive chemicals for use in killing cattails can also be used. Contact your nearest Agricultural Extension Agent. C. The orifice/pump is designed to draw down the pond in 2-5 days. If drawdown is not accomplished in that tune, the orifice will be replaced with a larger or smaller orifice. Slow dmwdown may be attributed to a clogged system. The source of the clogging will be found and eliminated. D. All components of the detention pond system will be kept in good working order. Repair or replacement components will meet the original design specifications as per the approved stonnwater plan. If previously approved components are determined to be ineffective, the component must be redesigned and/or replaced. VI. Special Requirements: I, L�r4 Nee, D. , hereby acknowledge that I am the financially (please print or type name clearly) responsible party for maintenance of this detention pond. I will be responsible for the performance of the maintenance as outlined above, as part of the Stornwater Management Permit received for this project. Revised 225197 ---- MEMO=LETTER HANOVER DESIGN SERVICES, P.A. (910)343-8W2 319 WALNUT ST. WILWNGTON, NC 28401 , DATE SUBJECTn AIAII � % ins Ir�[r r / o4oKt °a+P�h�sp—not4o.", 4-^berm5; ke4re ;+1 Gou 40eve c7.,llA r,2 w Plt-75rl Ct Please reply E No reply necessary r°9l' ' Hanover Design Services, P.A. Land Surveyors, Engineers, Land Planners NOVEMBER 11, 1997 Ms. Linda Lewis N.C.D.E.H.N.R. 127 Cardinal Drive Extension Wilmington, NC 28405-3845 Re: ANTIQUA, revisions as per State request E C E I V E NOV 121997 D Dear Linda: o J10 PROJ # `7(f�13 1. Attached are copies of footprints of the buildings with the applicable building numbers on each. 2. I have revised the forebay weir elevation so that it is the same as the water surface elevation. 3. I have noted on the cul-de-sac detail that the 26' dimension is from face of curb to face of curb. If you have any questions, or require any additional information, please feel free to contact me. Sincerely, Jeffrey B. Malpass, EIT 319 Walnut Street Wilmington, NC 28401 (910) 343-8002 State of North Carolina Department of Environment and Natural Resources Wilmington Regional Office James B. Hunt, Jr., Governor Wayne McDevitt, Secretary Division of Water Quality November 6, 1997 Mr. Jeff Malpass Hanover Design Services 319 Walnut Street Wilmington, NC 28401 NCDENR NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES Subject: ACKNOWLEDGEMENT OF RECEIPT AND REQUEST FOR ADDITIONAL INFORMATION Stormwater Project No. SW8 970713 Antiqua Apartments New Hanover County Dear Mr. Malpass: The Wilmington Regional Office received previously requested information for the Stormwater Management Permit Application for Antiqua Apartments on October 3, 1997. A preliminary review of that information has determined that the application is not complete. The following information is needed to continue the stormwater review: 1. You have provided 4 copies of the exact same footprint with different dimensions. Please add the applicable building numbers to each footprint. 2. The forebay section has not been revised to reflect a new weir elevation at the permanent pool, or a maximum of 8"-12" below it. It still shows a 2' separation. 3. Please note on the cul-de-sac detail that the 26' dimension is from the face of curb to face of curb. 127 North Cardinal Dr., Wilmington, North Carolina 28405 Telephone 910-395-3900 FAX 910-350-2004 An Equal Opportunity Affirmative Action Employer 50% recycled/10% post -consumer paper %fl Mr. Malpass November 6, 1997 Stormwater Project No. SW8 970713 Please note that this request for additional information is in response to a preliminary review. The requested information should be received by this Office prior to December 6, 1997, or the application will be returned as incomplete. The return of a project will necessitate resubmittal of all required items, including the application fee. If you have any questions concerning this matter please feel free to call me at (910) 395-3900. Sincerely, 47& Ms. Linda Lewis Environmental Engineer RSS/arl: S:\WQS\STORMWAT\ADDINFO\970713.NOV cc: Linda Lewis Central Files 2 HANOVER DESIGN SERVICES, P.A. (910) 343-SW2 319 WALNUT ST. WILMINGTON, NC 28401 ,-To� / C�4 �-QWlf DATE SUBJECT Dj1 Co/4les OT 5��.`.c.✓/ d- �ro5l' Conf'/o� 2�s / p�"ZX _ l �oo k let CT� C4-1G"j. oA � o0 , h n I�i� �GJ /A, 5 ElPlease reply 0 No reply necessary 9� /,/ Hanover Design Services, P.A. Land Surveyors, Engineers, Land Planners OCTOBER 2, 1997 Ms. Linda Lewis N.C.D.E.H.N.R. 127 Cardinal Drive Extension Wilmington, NC 28405-3845 Re: ANTIQUA, revisions as per State request Dear Linda: As per comment number 1, attached is a copy of calcs. with areas at elevations requested. As per comments #2, I'm sending the first page of the revised stormwater management application. As per commment #3, attached are foot prints for all buildings. As per commment #4, I have redimensioned the pool. As per comment #5, I have ajusted the forebay weir to the water surface el. As per comment #6, I have added cul-de-sac detail. As per comment 47, I have corrected the street detail. As per comment #8, the area in the other category on application was in the wrong place that area was for driveways. As per commment #9, application and summary have been revised to show correct impervious area. As per comment #10, a detail for "All type curb has been provided. If you have any questions, or require any additional information, please feel free to contact me. TOR ,,,,,„ATE R Sincerely, Jeffrey B. MaJlpass, EIT E C E I V E OCT 0 31997 D PROJH gM)v-7(3 319 Walnut Street Wilmington, N.C. 28401 (910) 343-8002