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HomeMy WebLinkAboutSW8040228_HISTORICAL FILE_20090330STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO. SW���J�X� DOC TYPE ❑ CURRENT PERMIT ❑ APPROVED PLANS HISTORICAL FILE ❑ COMPLIANCE EVALUATION INSPECTION DOC DATE WYYMMDD i'P. O1 TRANSACTION REPORT F� MAR-30-2009 MON 03:59 PM FOR: NCDENR 910 350 2004 SEND DATE START RECEIVER TX TIME PAGES TYPE NOTE M# DP MAR-30 03,57 PM 97991455 3'08" 17 FAX TX OK (01) 330 TOTAL 3M 8S PAGES; 17 Stare of North Car -Ming Npbrtment olEavirooment and Natural Resource Rrdmington Rogioaal Office Savaty Eases perdue, Governor FAX COVER SHEET Dee F?tw mn, Serremry Date: --' — •31' " ZQD 7 No. Pages (excl. cover): To: GQ rr Cr�,7 �p r d Frvm: JoSasmer -- Co: Z-4na duns r�< Co' m IV Phone: (910) 796.3336 Fax: Fex 10 50- 004 Re: //.0r (Te.,e �.s.G Gi�'nds �Q�'��E S ly �0�4c2�70 4VIe— !'CI N7 i .4L � rf/ i 5 /' S yn � % i 04 T O CQ _ C'O o � ,� �C/m�`f' 9s— Cl��/,'car �.•o.,� `O�J /Y!C i1 �'i o .✓ � � �c. /ICuJ O/�crJ it e r .� �� .SD�T r� '70 me oZ-)ae.rs If warm 5� WSJ o� ✓ C t C 7� /i1/e7 127 Cudbvd chive Ex maiom, W-Eb-ingtnq NC 2940 • (910) 7967215 • An Egail OPpw tmi y Afftrmetive Ac ion Employer w State of North Carolina Department of Environment and Natural Resources Wilmington Regional Office Beverly Eaves Perdue, Governor FAX COVER SHEET Dee Freeman, Secretary Date: �� Zoy / No. Pages (excl. cover): To: Ga rr� L ��n 4 d From: Jo Casmer Co: !a 7 eli w r/< Ly /n m r% �G �' Phone: (910) 796-7336 Fax. ! ` �� Fax: (910) 350-2004 Re: �a//Ar �e I 4j/ nos /��'el �ln'J 9' �S✓P�,or �'� g .,� ,v c c c/ f c �/ 6 .,� Ile O . w2 //, A/7 N /i '-- i 's 7/54-n < 127 Cardinal Drive Extension, Wilmington, NC 28405 • (910) 796-7215 • An Equal Opportunity Affirmative Action Employer 1. 2. 3. a NCDENR North Carolina Department of Environment and Natural Resources Division of Water Quality STATE STORMWATER PERMIT NAME/OWNERSHIP CHANGE FORM CURRENT PERMIT INFORMATION: Stormwater Management Permit Number: Permit Holder's Name: Signing official's Name: Title: (person legally responsible for permit) Mailina Address: City: State: Zip: Phone: ( } Fax: ( } II. NEW OWNER / PROJECT / ADDRESS INFORMATION: 1. This request is for: (please check all that apply) a. Change in ownership of the property/company (Please complete Items #2, #3, and #4 below) b. Name change of project (Please complete Item #5 below) c. Mailing address change. (Please complete Item #4 below) A. Other (please explain): 2. New owner's name to be put on permit: 3. New owner's signing official's name and title: Title: 4. New Mailing Address: City: State: Zip: Phone: ( ) Fax: { ) 5. New Project Name to be placed on permit: Ownership/Name Change-022309 Page 1 of 3 PERMIT NAME/OWNERSHIP CHANGE FORM THIS APPLICATION PACKAGE WILL NOT BE ACCEPTED BY THE DIVISION OF WATER QUALITY UNLESS ALL OF THE APPLICABLE ITEMS LISTED BELOW ARE INCLUDED WITH THE SUBMITTAL. REQUIRED ITEMS: 1. This completed form. 2. Legal documentation of the transfer of ownership. 3. A copy of the recorded deed restrictions, if required by the permit. 4. The designer's certification, if required by the permit. 5. A signed Operation and Maintenance plan, if a system that requires maintenance will change ownership. 6. Maintenance records. CERTIFICATION MUST BE COMPLETED AND SIGNED BY BOTH THE CURRENT PERMIT HOLDER AND THE NEW APPLICANT IN THE CASE OF A CHANGE OF OWNERSHIP. FOR NAME CHANGES, COMPLETE AND SIGN ONLY THE CURRENT PERMITTEE'S CERTIFICATION. Current Permittee's Certification: I, , attest that this application for a name/ownership change has been reviewed and is accurate and complete to the best of my knowledge. I understand that if all required parts of this application are not completed and that if all required supporting information and attachments are not included, this application package will be returned as incomplete. Signature: Date: New Applicant's Certification: (Must be completed for all transfers of ownership) I, , attest that this application for an ownership change has been reviewed and is accurate and complete to the best of my knowledge. I understand that if all required parts of this application are not completed and that if all required supporting information and attachments are not included, this application package will be returned as incomplete. Signature: Date: Mail the entire package to: NCDENR Division of Water Quality Surface Water Protection Section — Stormwater at the Appropriate Contact Address (see the following page) Ownership/Name Change-022309 Page 2 of 3 State Stormwater Management Systems Permit No. SW8 040228 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 1S HEREBY GRANTED TO Dollar Properties Nine, LLC Dollar General Winds Ridge New Hanover County FOR THE construction, operation and maintenance of an infiltration basin in compliance with the provisions of 15A NCAC 2H .1000 (hereafter referred to as the "stormwater rules') and the approved stormwater management plans and specifications and other supporting data as attached and on file with and approved by the Division of Water Quality and considered a part of this permit. This permit shall be effective from the date of issuance until July 2, 2014, and shall be subject to the following specified conditions and limitations: I. DESIGN STANDARDS I . 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 64,070 square feet of impervious area. 3. The tract will be limited to the amount of built -upon area indicated on page 3 of this permit, and per approved plans. The built -upon area for the future development is limited to 32,000 square feet. 4. All stormwater collection and treatment systems must be located in either dedicated common areas or recorded easements. The final plats for the project will be recorded showing all such required easements, in accordance with the approved plans. 5. The runoff from all built -upon area within the permitted drainage area of this project must be directed into the permitted stormwater control system. Page 2 of 7 i State Stormwater Management Systems Permit No. SW8 040228 6. The following design criteria have been provided in the infiltration basin and must be maintained at design condition: a. Drainage Area, acres: 2.43 Onsite, ft2: 58,806 Offsite, ft2: 47,184 b. Total Impervious Surfaces, ft2: 641070 Building, ft2: 13,900 Parking, ft2: 14,820 Sidewalks, ft2: 3,350 Future, ft2: 32,000 C. Design Storm, inches: 3" d. Basin Depth, feet: 4.0 e. Bottom Elevation, FMSL: 38.5 f. Bottom Surface Area, ft2: 2,461 g. Bypass Weir Elevation, FMSL: 42.5 h. Permitted Storage Volume, ft3: 17,228 i. Type of Soil: Leon Sand j. Expected Infiltration Rate, in/hr: 10.8 k. Seasonal High Water Table, FMSL: 35.5 1. Time to Draw Down, hours: 8 M. Receiving Stream/River Basin: Everetts Creek / Cape Fear n. Stream Index Number: 18-87-29 o. Classification of Water Body: "SA HQW" II. SCHEDULE OF COMPLIANCE l . 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 revegetation of slopes and the vegetated filter. d. Immediate repair of eroded areas. C. Maintenance of all slopes in accordance with approved plans and specifications. f. Debris removal and unclogging of outlet structure, orifice device, flow spreader, catch basins and piping. g. A clear access path to the outlet structure must be available at all times. Page 3 of 7 State Stormwater Management Systems Permit No. SW8 040228 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. The facilities shall be constructed as shown on the approved plans. 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. 6. 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. 7. 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. 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. £ 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 This permit is not transferable except after notice to and approval by the Director. In the event of a change of ownership, or a name change, the permittee must submit a' formal permit transfer request to the Division of Water Quality, accompanied by a completed name/ownership change form, 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. The permittee is responsible for compliance with all permit conditions until such time as the Division approves the transfer request. Page 4 of 7 State Stormwater Management Systems Permit No. SW8 040228 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) having 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. 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. 6. The permit may be modified, revoked and reissued or terminated for cause. The filing of a request for a permit modification, revocation and reissuance or termination does not stay any permit condition. 7. 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. Approved plans and specifications for this project are incorporated by reference and are enforceable parts of the permit. 9. The permittee shall notify the Division any name, ownership or mailing address changes within 30 days. Permit issued this the 2nd day of July 2004. NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION Alan W. Klimek, P.E., Director Division of Water Quality By Authority of the Environmental Management Commission Page 5 of 7 State Stormwater Management Systems Permit No. S W 8 040228 Dollar General Winds Ridge Stormwater Permit No. SW8 040228 New Hanover 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 ject Owner) hereby state that, to the best of my abilities, due care and diligence was used in the observation of the project construction such that the construction was observed to be built within substantial compliance and intent of the approved plans and specifications. The checklist of items on page 2 of this form is included in the Certification. Noted deviations from approved plans and specification: Signature Registration Number Date SEAL Page 6 of 7 State Stormwater Management Systems Permit No. SW8 040228 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 outletibypass structure elevations are per the approved plan. b. The outlet structure is located per the approved plans. 7. Trash rack is provided on the outlet/bypass structure. 8. All slopes are grassed with permanent vegetation. 9. Vegetated slopes are no steeper than 3:1. 10. The inlets are located per the approved plans and do not cause short-circuiting of the system. 11. The permitted amounts of surface area and/or volume have been provided. 12. Required drawdown devices are correctly sized per the approved plans. 13. All required design depths are provided. 14. All required parts of the system are provided, such as a vegetated shelf, and a forebay. 15. The required system dimensions are provided per the approved plans. cc: NCDENR-DWQ Regional Office New Hanover County Building Inspections Page 7 of 7 TRIPP ENGINEERING, P.C. 41 419 Chostnut Street Wilmington, North Caroline 28401 Phone: (910) 763-5100 - FAX: (910) 763-5631 July 1, 2004 NCDENR Division Water Quality 127 Cardinal Drive Wilmington, NC 28405-3845 Attn: Ms. Laurie Munn Re: Dollar General Winds Ridge Project No. SW8 040228 TE 03114 Dear Laurie: In response to your correspondence dated June 25, 2004, we offer the following: 1. A note is added to the site data table indicating that no wetlands exist on site. 2. The requested note has been added to the site plan. 3. The requested dimensions have been added to the plan, 4. The requested note has been added to the infiltration basin detail. 5. A revised infiltration basin supplement is attached. Please review for approval and contact us with any questions or comments. Thank you. Sincerely, Tripp Engineering, P.C. X/In. 0 Michael Hoffer MBH:dcb Enc. IV JUL 0 2 2004 RON Entity Names Page 1 of 1 North Carolina Elaine F Marshall DEPARTMENT OF THE Secretary SECRETARY OF STATE Corporations *Corporations Home *Important Notice •Corporate Forms/Fees *Corporations FAQ *Tobacco Manufacturers •Verify Certification •Online Annual Reports Links ®Secretary Of State Home *Business License •Register for E-Procuremer *Dept. of Revenue Legislation *1999 Senate Bills *2001 Bill Summaries OAnnual Reports 1997 *Corporations 1997 *Other Legislation Search *By Corporate Name *For New Corporation *By Registered Agent Online Orders *Start An Order *New Payment Procedures PO Box 29622 Raleigh, NC 2762"622 (919)807-2225 Date: 6/25/2004 Click here to: View Document Filings %Print a pre -populated Annual Report Form I File an Annual Report I Corporation Names Name Name Type NC Dollar Properties Nine, Legal LLC Limited Liability Company Information SOSID: 0729500 Status: Current -Active Date Formed: 61912004 Citizenship: Domestic State of Inc.: NC Duration: 1/1/2074 Registered Agent Agent Name: Vincent, Jon T. Registered Office Address: 1508 Military Cutoff Road, Suite 302 Wilmington NC 28403 Registered Mailing 1508 Military Cutoff Road, Suite 302 Address: Wilmington NC 28403 Principal Office Address: 1508 Military Cutoff Road, Suite 302 Wilmington NC 28403 Principal Mailing Address: 1508 Military Cutoff Road, Suite 302 Wilmington NC 28403 For questions or comments about the North Carolina Secretary of State's web site, please send e-mail to Webmaster. For questions or comments concerning the Corporations Division, please send e-mail to Corporations Administrator Click here for help downloading forms. http://www.secretary.state.ne.us/Corporations/soskb/Corp.asp?6480615 6/25/2004 INFILTRATION BASIN ANALYSIS FILENAME: G:IDATAIWPDATAIWQSIINBASIN1040228.WK1 PROJECT NUMBER: SW8 040228 DATE: 25-Jun-04 PROJECT NAME: Dollar General at Winds Ridge DRAINAGE BASIN: Cape Fear REVIEWER: L Munn RECEIVING STREAM: Everett Creek CLASS: SA Index No.: If ORW, is site within the 575' AEC? SITE AREA: 1.35 acres DRAINAGE AREA: a9Q SF IMPERVIOUS AREA CALCULATION BUILDINGS PARKINGIASPHALT CONCRETE FUTURE TOTAL % IMPERVIOUS, 1= 6{ 44l0. ELEVATION OF SEASONAL HIGH WATER TABLE REPORTED INFILTRATION RATE SURFACE AREAS AND ELEVATIONS Elev. (ft) Area, sq ft Inc. Volume Acc. Volume BOTTOM 38.5 2461 0 0 0 TOP 42.5 6150 17222 17222 VOLUME I DEPTH 1 DRAWDOWN CALCULATION DESIGN STORM, INCHES DESIGN VOLUME TOTAL VOLUME AVAILABLE DEPTH OF RUNOFF TIME TO DRAWDOWN 25 YEAR 24 HOUR STORM NIA Intensity, i = .33 inches / hour Qr=CiA= Qp through the bottom of the basin= 10 YEAR 10 MIN HIGH INTENSITY EVENT Intensity, i = 6.3 inches / hour Volume for 10 yr. 10 min. event = 54< CUBIC FEET €22 CUBIC FEET 4,L?Q FEET 73 HOURS MUST BE <120 0.55 CFS 0.62 CFS Must be > Qr 6287.33 CF < 17222 CF COMMENTS Volume and drawdown are (not) within Design Requirements. Michael F. Easley, Governor lvilliarn G. Ross Jr., Secretary North Carolina Department of Environment and Natural Resources Alan W. Klimek, P.E„Director Division of Water Quality Coleen H. Sullins, Deputy Director ❑Msion of Water Quality June 25. 2004 \ir. Jon T. Vincent Dollar Properties Nine, LLC 150S Military Cutoff Road, Suite 302 NVilminaton. NC 2&10 Subject: REQUEST 1FOR ADDITIONAL INFOR.NL4,TION Stormwater Project No. SW8 040228 Dollar General Winds Ridge Ne%v Hanover County v Dear Mr. Vincent: The «rilmington Regional Office received a Stormwater Management Permit Application for Dollar General Winds Ridge on May 24. 2004. A preliminary reN-iew of that information has determined that the application is not complete. The following information is needed to continue the stormwater re% iew: Please either delineate all wetlands on site, disturbed or undisturbed, or note on the plans that none exist. 2. Please proN ide a note on the plans that all roof drainage must be directed so as to be picked up by the infiltration basin. 3. Please provide dimensions for the parking area, entrance drive, dumpster pads, and sidewalks. Please note on the infiltration basin detail that the bottom of the basin must be covered with a 4" laver of clean sand. 5. Please revise the infiltration basin supplement to reflect the basin design parameters for the 3)" storm. Also, please re%7se the infiltration rate to match the soils report. Please note that this request for additional information is in response to a preliminary reN iew. The requested information shouid be received by this Office prior to July 2. 2004, or the application will be returned as incomplete. The return of a project will necessitate resubmittal of all required items, including the application fee. If you need additional time to submit the information. please mail or fax tour request for a time extension to the DIN-ision at the address and fax number at the bottom of this letter. The request must indicate the date by Which you expect to submit the required information. The Division is allowed 90 da,%•s from the receipt of a completed application to issue the permit. N. C. Division of VVazer Quality Wilmington Regional CJf-ice 127 Cardinal Drive Extension Wilmington, NC 28405 (910) 395-3900 (210) 350-2004 Fax Customer Service 1 800 523-7748 NUS HR Nor. Jon Vincent Pate 2 June 25, 2004 The construction of any impervious surfaces, other than a construction entrance under an approved Sedimentation Erosion Control Plan, is a Niolation of NCGS 143-215.1 and is subject to enforcement action pursuant to NCGS 143-215.6A. Please reference the State assigned project number on all correspondence. Any original documents that need to be revised have been sent to the engineer or agent. All original documents must be returned or new originals must be provided. Copies are not acceptable. If you have any questions concemmg this matter please feel free to call me at (910) 395-3900. Sincerely, Laurie Munn Environmental Engineer RSS/:Ism S:IWQSISTORMWATIADDINFO120041040228.jun04.doc cc: Laurie Munn Mike Hoffer State of North Carolina Department of Environment and Natural Resources Wilmington Regional Office Michael F. Easley, Governor William G. Ross Jr., Secretary FAX COVER SHEET Date: U/o--�S/oq No. Of Pages: 3 To: From: L&u�'Le, L;u.ng CO: CO: FAX #:_ r (D-3 - 5 La j - REMARKS: FAX#: 910-350-2004 127 Cardinal Drive Extension, Wilmington, N.C. 28405-3845 Telephone (910) 395-3900 Fax (910) 350-2004 An Equal Opportunity Affirmative Action Employer ti TRIPP ENGINEERING, P.C. a 19 che�tntit street Wilmington, Nloiih Carolina 28A1 1'1ione: (910) 763-5100 • FAX: (910) 763-5631 June l 1, 2004 NCDENR Division Water Quality 127 Cardinal Drive Wilmington, NC 28405-3845 Attn: Cameron Weaver Re: Dollar General Winds Ridge Project No. SW8 040228 TE 03114 Dear Mr. Weaver: JUN 11 zw BY: We are requesting the above referenced project be scheduled for the express review process forstormwater. Dollar General Winds Ridge was originally submitted for regular review in February. We have received comments from Linda Lewis and submitted revisions on May 20, 2004. This project is a 135 acre site designed as commercial -shopping center. The project will be treated with an infiltration basin. The Developer is: Dollar Properties Nine, LLC Jon T. Vincent, Member Manager 1508 Military Cutoff Road, Suite 302 Wilmington, NC 28403 Phone:256-0101; Fax:256-0515 We enclose the $4000 application fee for the express review. Please inform us of the date that this project can be reviewed. Thank you. Sincerely, Tripp Engineering, P.C. - D/a t" - - & j" Della Baird Enc. Y, (' Cathoy r`;4: Windgate Road Pilots Ridoe Road .9 �J N Site Vicinity Map (No Scale) 9. le - [Fwd: Dollar General @Winds Ridge SW8 040228] Subject: [Fwd: Dollar General @Winds Ridge SW8 0402281 From: Linda Lewis <Linda.Lew is@ncmail.net> Date: Thu, 06 May 2004 10:20:44 -0400 To: Phil Tripp <trippeng@ec.rr.com> Phil: In addition to my previous email, attached, please also provide the following information: The proposed emergency spillway will drain into a previously permitted curb outlet swale for the Winds Ridge subdivision. No other drainage may enter that swale without first modifying the low density application. We are requesting via separate letter, that Martin Sorenson of Myrtle Grove Group, LLC, submit a modified application to address the changes proposed under the winds Ridge plan submitted to the NHC Planning Department on March 12, 2004. Perhaps, at the same time, Mr Vincent can discuss moving the curb outlet swale and the spillway/vegetated filter location for this infiltration basin with Mr. Sorenson. Linda Subject: Dollar General @Winds Ridge SW8 040228 From: Linda Lewis <Linda.Lewis@ncmall. net> Date: Thu, 06 May 2004 09:40:16 -0400 To: Phil Tripp <trippeng@ec.rr.cor> Phil: The Division received a stormwater application for the subject project on February 24, 2004. The application is incomplete. Please provide the following information prior to June 6, 2004, to continue the review: 1. Section 11I.1 of the application indicates that this will be a dry detention system, the supplement is for an infiltration basin, and the calculations are for a wet detention pond. Which system will be used at this site? a. If it's truly infiltration, as the supplement and plans suggest, please add a cross-section detail of the basin labeling the elevations and the 3:1 slope requirement. b. Additionally, please add an offline bypass mechanism, or provide storage for 3" of runoff. 2. Provide a 50, vegetated filter for all overflows from the infiltration basin. Label the location on the plans, and provide a detail showing elevations and grading for the filter. 3. Delineate the 2.43 acre drainage area. 4. Provide sealed infiltration calculations. Linda Dollar General @Winds Ridge SW8 040228 Content -Type: message/rfc$22 Content -Encoding: 7bit 1 of 1 5/6/2004 10:21 AM TRIPP ENGINEERING, P.C. 419 ChcStnut Street Wilmington, North Carolina 28401 Phone: (910) 763-5100 • FAX: (910) 763-5631 May 20, 2004 NCDENR Division Water Quality 127 Cardinal Drive Wilmington, NC 28405-3845 Attn: Ms. Linda Leivis Re: Dollar General Winds Ridge Project No. SW8 040228 TE 03114 Dear Linda: Im C MAY 2 4 20 In response to your email correspondence regarding the above referenced project, I have enclosed the following: 1. Updated site plan showing a revised location for the emergency spillway and a drainage delineation map. 2. Updated detail sheet including a cross-section detail of the infiltration basin. I Sealed infiltration calculations. 4. 10-year and 25-year routing calculations to show that post -construction runoff is lower than pre -construction runoff. 5. An updated page 2 of the stormwater application stating that the project will be treated with an infiltration basin. 6. A copy of the soils report. 7. An updated stormwater narrative. Please review for approval and contact us with any questions or comments. Thank you. Sincerely, Tripp Engineering, P.C. Michael Hoffer MBH:dcb Eric. 05/20/04 Stormwater Narrative Dollar General — Winds Ridge New Hanover County, NC TE03114 Dollar General — Winds Ridge is a 1.35-acre existing vacant tract proposed for a commercial shopping center. Impervious areas include 13,400 SF of building, 3,350 SF of sidewalk and 14,820 SF of asphalt, creating a total lot impervious area of 32,070 SF. The drainage basin also includes a 1.08-acre vacant tract to be developed in the future with an estimated 32,000 SF of impervious area. The total drainage basin area will be 2.43 acres with 64,070 SF of impervious area. The total percent impervious is 60.4%. The project will be treated with an infiltration basin. The infiltration pond will be designed to meet the State's 3" and the County's 25-year pre -post requirement. Outflow from the pond drains to Everetts Creek, classification SA. Re: Dollar General @Winds Ridge SW8 040228] Subject: Re: Dollar General @Winds Ridge SW8 040228] From: "Phillip Tripp" <trippeng@ec.rr.coin> Date: Fri, 14 May 2004 16:21:10 -0400 To: "Linda Lewis" <Linda.Lewis@ncmai1.net> Linda: Regarding the outfall location of the infiltration pond, we propose to move the emergency spillway location so that it drains into the swale over 100, from the roadway flume. Currently the site drains to this area and our design will actually lower the outfall on a 10 or 25-year storm. Additionally, the pond is capable of storing 3" of runoff and this is not counting infiltration. If this is acceptable to you, I will forward drawings & calculations to support our position. Mike Hoffer ----- Original Message ----- From: "Linda Lewis" <Linda.Lewis@ncmail.net> To: "Phil Tripp" <trippeng@ec.rr.com> Sent: Thursday, May 06, 2004 10:20 AM Subject: [Fwd: Dollar General @Winds Ridge SW8 0402281 > Phil: > • in addition to my previous email, attached, please also provide the > following information: 7 > The proposed emergency spillway will drain into a previously permitted > curb outlet swale for the Winds Ridge subdivision. No other drainage may a enter that swale without first modifying the low density application. > We are requesting via separate letter, that Martin Sorenson of Myrtle > Grove Group, LLC, submit a modified application to address the changes > proposed under the Winds Ridge plan submitted to the NHC Planning > Department on March 12, 2004. Perhaps, at the same time, Mr Vincent can > discuss moving the curb outlet swale and the spillway/vegetated filter > location for this infiltration basin with Mr. Sorenson. > Linda 1 of 1 5/17/2004 7:59 AM 03/04/2004 10:56 9102560515 JTV MGMT PAGE 02/05 Ut: Park A. L)own'ingg Jr. Consultant 8044 Bald Eagle Lane Wilmington, NC 28411 910-686-1841 Mr. Jan Vincent .ITV Business and Management Consultant 1.508 Military Cut Off Road, Suite 302 Wilmington, North Carolina 28403 Subject: Infiltration Evaluation Winding River Business Center Wilmington, North Carolina Dear Mr. Vincent, January 26, 2003 RECENEi� MAY 2 4 2004 DWQ pnoa # An infiltration test for the development of The Winding River Business Center located on Carolina Beach Road in Wilmington, North Carolina has recently been conducted. Field Investigations An investigation of the subsurface soil and ground water conditions within the proposed storm water infiltration location indicated on the provided sketch was recently conducted. The purpose of the investigation was to determine the suitability of the in - place sails for the infiltration of storm water runoff. We investigated the subsurface soil and ground water conditions by drilling a hand auger boring to depths of approximately five feet below the existing ground surface at the approximate location indicated. Subsurface soils were classified by depth. The attached Site Soil Evaluation form provides a summary of the subsurface conditions encountered at the auger boring location Our field classifications test results indicate that the subsurface soils consisted of relatively drainable stratas of fine to medium grained sands to the depths explored. 03/04/1-004 10:58 9102560515 JTV MGMT PAGE 03/e5 i Infiltration Evaluation Winding River Business Center Wilmington, North Carolina Although groundwater was not actually encountered to the depths explored. A thin strata of cemented silty sands (hard pan) was encountered at a relatively shallow depth. This thin strata will create a perrbed groundwater condition of seasonal rainfall. The seasonal high groundwater condition was encountered at a depth of seven feet from a test pit study conducted by others. We also conducted an infiltration test near the hand auger boring location to estimate infiltration rates for the subsurface soils. The infiltration test was conducted at a depth of 48 inches at the suspected depth of the proposed retention pond. The testing was performed within the upper stratum of moderately-drainable fine to medium sands. The results of this test arc summarized on the Site Soil Evaluation Form and are also listed below. The infiltration test was performed at a deptb of approximately 48 inches below surface grade and indicated on infiltration rate of 0.19 inch per minute. If you have any questions please do not hesitate to tail'. Sincerely, TAAA.6 A, Parks A Downing, R. Project Consultant Attachments: Site Soil Evaluation Form Site Sketch 03/04/2004 10:58 9102569515 JTV MGMT PAGE 04/05 Q infiltration Evaluation Winding River Business Center Wilmington, North Carolina December 2003 Location Depth Soil Description # 1 0-8" Gray fine to medium SAND 811-42" White fiune to medium SAND 42"-48" Brown silty line do medium SAND (Hardpan) 48"-55" Brown fine to medium Sand No groundwater was encountered to the depths explored. Infiltration Rate: 0.18 inches per minute Test was conducted at 48 inches below the existing ground surface. TRIPP ENGINEERING, P.C. +19 CllestIlUt SlTeet Wilmington, North Carolina 28401 Phone: (910) 763-5100 • FAX: (910) 763-5631 February 24, 2004 NCDENR Division Water Quality 127 Cardinal Drive Wilmington, NC 28405-3845 Attn: Ms. Linda Lewis Re: Dollar General Winds Ridge New Hanover County, NC TE 03114 Dear Linda: Enclosed please find two (2) sets of plans, one (1) signed original and one (1) copy of the application form with narrative, one (1) infiltration basin supplement, two (2) sets of calculations and one check for the application fee. Please review for approval and contact us with any questions or comments. Thank you. Sincerely, Tripp Engineering, P.C. Michael Hoffer MBH:dcb Enc. M ED 4 02/06/04 Stormwater Narrative Dollar General — Winds Ridge New Hanover County, NC TE03114 Dollar General — Winds Ridge is a 1.35-acre existing vacant tract proposed for a commercial shopping center. Impervious areas include 13,900 SF of building, 3,350 SF of sidewalk and 14,820 SF of asphalt, creating a total lot impervious area of 32,070 SF. The drainage basin also includes a 1.08-acre vacant tract to be developed in the future with an estimated 32,000 SF of impervious area. The total drainage basin area will be 2.43 acres with 64,070 SF of impervious area. The total percent impervious is 60.4%. The project will be treated by dry detention. The detention pond will be designed to meet the State's 1" and the County's 25-year pre -post requirement. Outflow from the pond drains to Everetts Creek, classification SA. TRI-COAST PROPERTIES, LLC 1508 MILITARY CUTOFF RD, SUITE 302 WILMINGTON, NC 28403 1495 66-12471531 DATE Z I PAY s TO THE 1 ORDER OF '42 D OU I :g art y `l L� OO DOLLARS 8 „; � r ORT CITY v CAPITAL BANK 1 SOB 114ITARY CUTOFF Rp_ WP_MJNGTON, NC 25403 FOrl 11 TRII'P ENGINEERING, P.C. 419 Chestnut Street Wilmington, North Carolina 28401 Phone: (910) 763-5100 • FAX: (910) 763-5631 November 26, 2003 NCDENR Division Water Quality 127 Cardinal Drive Wilmington, NC 28405-3845 Attn: Vincent Lewis Re: Seasonal High Groundwater Table Elevation 10/31/03 Site Visit Wind's Ridge Site US Hwy 421 TE 03114 Dear Vincent: Enclosed is a copy of our findings for your file. Please review and contact us with any questions, comments or if you need additional information. Thank you. Sincerely, Tripp Engineering, P.C. k. b. Phillip G. Tripp4P.E. 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