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HomeMy WebLinkAboutSW8010628_HISTORICAL FILE_20181109STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO. DOC TYPE ❑CURRENT PERMIT ❑ APPROVED PLANS HISTORICAL FILE ❑ COMPLIANCE EVALUATION INSPECTION DOC DATE YYWMMDD STATE OF NORTH CAROLiNA Department of Environrneatal Quality 127 Cardinal Drive Extension Wilmington, North Carolina 28405 (910) 796-7215 FILE ACCESS RECORD DEQ SECTION: O� P%, L- / Sd REVIEW TEv1E / DATE: � E � Y _ I —I P N AMF.: A` i m �` n t"%� to r .i , EMAZL: - - REPRESENTL'i iG: _ Q S - PHONE: Guidelines for Access: The staff of Wilmington Regional Office is dedicated to making public records in our custody readily available to the public for review and copying. 'VVe also have the responsibility to the public to safeguard these records and to carry out our day-to-day program obligations. Please read carefully the following guidelines signing the form Due to the large public demand for file'access, we request that you call at least a day in advance to schedule an appointment to review the files.' Appointments wi1.1 be scheduled between 9:00arn and 3:00 m. Viewing time ends at 4:45pm. Anyone arriving without an appointment may view the files to the extent that time and staff supervision is available. 2. You must specify files you want to review by facility name. The number of files that you may review at one time will be limited to five. 3. You may make copies of a file when the copier is not in use by the staff and if time permits. Cost per copy is FILES MUST BE KEPT LN ORDER YOU FOUND THEM. Files may not be taken from the office. To remove, alter, deface, mutilate-, or destroy material in one of these files is a misdemeanor for which you can be fined up to $500.00. No briefcases, large totes, etc. are permitted in the file review area. n. Necessary large plan copies can be. scheduled with Camcrori,Weqve7@nqdenE.gov 919-796-7475 for a later date/time at an offsite location at your expense. Large plan copies needed should be attached on top of the file. Allways Graphics can be contacted to set up payment options. Written questions may be left with this'co�inpleted foX.rd an 5taif merai�er.will b� in contact With y®d rF you"provide your contact iriforriiation-whe're indicateii above'.' In accordance with General Statue 25-3-512, a $25.00 processing fee will be charged and collected for checks on which payment has been refused. FACILITY NAME COUNTY ��s o eignaturv, and Name of FirrnBusiness Date Time In COPS MADE 110 -_ PAID INVOICE 2� Tirne Out G./ADM/Shared/File Review Access Form rev 2018 MEMORY TRANSMISSION REPORT FILE NO. 066 DATE 04.15 14:49 TO 919104556150 DOCUMENT PAGES 16 START TIME 04.15 14:49 END TIME 04.15 14:52 PAGES SENT 16 STATUS OK A..r 11rcG1nnry, (�o..ornnr TIME :04-15-2015 14:52 FAX NO.1 NAME "`SUCCESSFUL TX NOTICE' $tnt� of rgio tR Carnllna i7epwrt—t or ffc-1 o—t and N.W'al Re� Wll-"-ft4 n R��nnal (]fllce VAX <lc>VIRR SIiEE7' Lowola 7L van d r Vcaarf 5tecr4tary iio. ralgos (axcl. cover): �`�. From: ]o C...emer Ric: L�A�/fEl � � .✓ �� /✓�� /�O� 'rr� �E ��/ r' S 127 f_o:divol LJ civo E'Jct aio . Wi+-�+� on, i <'- 29,305 • (910] 796-7215 - /ln dual r•}pprntt+alty rmaacive Aotioo E —ploy State of;'North Carolina Department of Environment and Natural Resources Wilmington Regional Office Put McCrory, Governor FAX COVER SHEET Donald R van der Vaar4 Secretary Date: 7 � No. Pages (excl. cover): To: From: Jo Casmer Co: Phone: (91_0) 796-7336 Fax: d�s D Fax: (910) 350-2.004 T 7 le -r -/e- n ZI '71-,-' o ,LJ 127 Cardinal Drive Extension, Wilmington, NC 29405 • (910) 796-7215 • An Equal Opportunity Affirmative Action Employer NCDENR North Carolina Department of Environment and Natural Resources Beverly Eaves Perdue Governor November 18, 2010 Ms. Judy Core, President Heatherton Park Limited Partnership 2700 Wycliff Road, Suite 312 Raleigh, NC 27607 Division of Water Quality Coleen H. Sullins Director Subject: PERMIT RENEWAL REQUEST Stormwater Permit No. SW8 010628 Heatherton Park Apartments Onslow County Dear Ms. Core: Dee Freeman Secretary The Division of Water Quality issued a Coastal Stormwater Management Permit, Number SW8 010628 to Heatherton Park Apartments for a High Density project on November 5, 2001. This permit expires on November 5, 2011. Per 15A NCAC 2H.1003(h) (the stormwater rules), applications for permit renewals shall be submitted 180 days prior to the expiration of a permit and must be accompanied by a processing fee, which is currently set at $505.00. If this is still an active project please complete and submit the enclosed renewal application prior.to May 5, 2011. If this project has not been constructed and a permit is no longer needed, please submit a request to have the permit rescinded. If you have sold the project, or are no longer the permittee, please provide the name, mailing address and phone number of the person or entity that is now responsible for this permit. Enclosed is a form for change of ownership, which should be completed and submitted if the property has changed hands. Your permit requires that upon completion of construction and prior to operation of the permitted stormwater treatment system, a certification of completion be submitted to the Division from an appropriate designer for the type of system installed. This is to certify that the permitted facility has been installed in accordance with the permit, the approved plans, specifications and supporting documentation. Please include a copy of the certification with your permit renewal request and processing fee. Enclosed is a copy of a sample certification. Also enclosed is a new Operation and Maintenance agreement that should be completed and submitted along with your renewal application. You should be aware that failure to provide the Designer's Certification and the operation of a stormwater treatment facility without a valid permit, are violations of NC General Statute 143-215.1 and may result in appropriate enforcement action including the assessment of civil penalties of up to $10,000 per day. If you have any questions, please feel free to contact David Cox at 910-796-7318. Sincerely, Georgette Scott, Stormwater Supervisor Surface Water Protection Section Wilmington Regional Office Enclosures GDStdwc S:\WQS\Stormwater\Renewal\Requests\2001\010628.nov10 cc: Wilmington Regional Office File Mming ton Regional Office 127 Cardinal Dnve Extension, Wilmington, North Carolina 28405 One Phone: 910-796-7215 \ FAX: 910-350-20041 Customer Service: 1-877-623-6748 North Ca rol i n a Internet: www.ncwalerquality.org Natlftally An Equal Opportunity 1 Affirmativa Aclion Employer . 4 f. State Stormwater Management Systems Permit No. SW8 010628 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 Heatherton Park Limited Partnership Heatherton Park Apartments Onslow County FOR THE construction, operation and maintenance of a wet detention pond in compliance with the provisions of 15A NCAC 2H A 000 (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 November 5, 2011 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 66,692 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. 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 forebay of the permitted stormwater control system. A permit modification must be submitted and approved prior to the construction of additional built -upon area from outside of the approved drainage area. 2 State Stormwater Management Systems Permit No. SW8 010628 Project Name: Permit Number: Location: Applicant: Mailing Address: Application Date: Name of Receiving Stream/Index #: Classification of Water Body: Pond Depth, feet: Permanent Pool Elevation, FMSL: Drainage Area, acres: Total Impervious Surfaces, ft': Offsite Area entering Pond, ft2: Required Surface Area, ft2: Provided Surface Area, ft2: Required Storage Volume, ft3: Provided Storage Volume, ft3: Temporary Storage Elevation, FMSL: Controlling Orifice: )IVISION OF WATER QUALITY ROJECT DESIGN DATA SHEET Heatherton Park Apartments SW8 010628 Onslow County Ms. Judy Core, Vice President Heatherton Park Limited Partnership 2700 Wycliff Road, Suite 312 Raleigh, NC 27607 November 5, 2001 White Oak / Sandy Run Branch 119-10-1 "SC NSW" 3.5 41.75 3.16 66,692 None, per Engineer 6,669 7,430 5,575 5,899 42.5 1.375"cp pipe 3 State Stormwater Management Systems Permit No. SW8 010628 II. SCHEDULE OF COMPLIANCE The stormwater management system shall be constructed in it's 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 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. 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. Decorative spray fountains will not be allowed in the stormwater treatment system. 6. 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. 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. If the stormwater system was used as an Erosion Control device, it must be restored to design condition prior to operation as a stormwater treatment device, and prior to occupancy of the facility. 9. A modification must be permitted prior to any construction. The following items will require a modification to the permit. The Director may determine that other revisions to the project should 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. C. Further subdivision, acquisition, or sale of the project area. The project area is defined as all property owned by the permittee, for which Sedimentation and Erosion Control Plan approval 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. If the proposed BUA exceeds the pemitted amount, a modification to the permit must be submitted and approved prior to construction. 4 State Stormwater Management Systems Permit No. SW8 010628 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 permittee shall notify the Division of any name, ownership or mailing address changes within 30 days. 13. 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. 14. The permittee is responsible for verifying that the proposed built -upon area does not exceed the allowable built -upon area. 15. 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. 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. Responsibility for compliance with all permit conditions remains with the Permittee until such time as the Division approves the formal permit request. 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. 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. Permit issued this the 5th day of November, 2001. NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION Gregory J. Thorpe, Ph.D., Acting Director Division of Water Quality By Authority of the Environmental Management Commission Permit Number SW8 010628 5 State Stormwater Management Systems Permit No. SW8 010628 I-Ieatherton Park Apartments Stormwater Permit No. SW8 010628 Onslow 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: Signature Registration Number Date SEAL 0 INANov 05 01 09:44a FENNER & F'ROFFITT, INC 252-237-4138 p. 1 IV A. s FENNER & PROFFITT CONSULTING ENGINECRS 125 W. BARNES STREET 1 P.O. BOX 1265 � WILSON, N.C, 27894-1265 PHONE (252)237-4136 FAX (252)2374138 E-N AIL fenpro£@onebox.com Date: November 5, 2001 To: Linda Lewis NCDENR Fax No.: (910) 350-2004 From: Dave Koss Re: Heatherton Park Stormwater Permit Total Pages Including Cover Page: 3 Message: Linda: Received the e-mail from last Friday, the building areas are shown on the C-I site Plan sheet. The attached sketch lists the building areas including the Community Building to get the 28,055 sgil shown on page 2 of SWU-101. When added to The parking and sidewalk area "38673 sgft) we get the 66,728 sgft (1.53 ac) used In the stormwater calaculatiors. Thanks for your help, Call if questions. Response Requested: Copy To: [ Yes [ ] No s h x SITE DATA ZONING: CURRENT=R-7; PROPOSED=TCA LOT SIZE: 4.05 AC. USE: MULTI —FAMILY BUILDING SQUARE FOOTAGE: AREA COVERED BY EACH 2—BR BUILDING: 4650 SF AREA COVERED BY EACH 3—BR BUILDING: 5722 SF NUMBER OF LIVING UNITS/BUILDING: 8 AREA OF PAVED DRIVES AND PARKING: 39.�,13 sF NUMBER OF PARKING SPACES REQUIRED: 66 NUMBER OF PARKING SPACES PROVIDED: 77 NUMBER OF HANDICAP SPACES PROVIDED: 4 TOTAL IMPERVIOUS SURFACE AREA: 66,728 SF MAXIMUM ALLOWABLE LOT COVERAGE: PERCENTAGE OF LOT COVERED BY BUILDINGS (FLOOR AREA RATIO): 16% PERCENTAGE OF IMPERVIOUS SURFACE AREA: 38% LOCATION. JACKSONVILLE, NORTH CAROLINA 0 a cn 0 m m m 0 J ro w Heatherton Subject: Heatherton Date: Fri, 02 Nov 2001 15:28:02 -0500 From: Linda Lewis <Linda.Lewis@ncmai1.net> Organization: NC DENR To: David Koss <Dkoss21137@ao1.com> Dear Dave: Maybe I'm just not doing a good job of communicating what I need regarding the building dimensions. While I understand that you certify the correctness of the amount of built -upon area for the buildings, I stall need either the square footage labeled on the plans for each building, or a dimensioned typcial footprint of the building itself with each side dimensioned. You can use a typical footprint as long as it applies to each building. For any non -typical buildings, please show individual square footages or dimensions for that building. As indicated in my October 15 letter, the dimensions you show from the parking lots to the buildings are fine for location purposes,- but do not indicate how much area that building covers. As far as I can tell, this is the last item. It appears that all other items have been addressed. I am ready to issue the permit upon receipt of the dimensioned buildings. Linda 1 of 1 1 1/2/2001 4:52 PM Heatherton Park Limited Partnership 2700 Wycliff Road Suite 312 E3- $ LUUi Raleigh North Carolina 27607 September 27, 2001 Ms. Linda Lewis North Carolina Division of Water Quality 127 Cardinal Drive Extension Wilmington, NC 28405 Re.: Amended Storm Water Management Permit Application Storm Water Project No.: SW8 010628 Heatherton Park Apartments, Onslow County, NC Dear Ms. Lewis: Please find attached our amended Storm Water Management Permit Application per your Request for Additional Information letter dated September 12, 2001. Heatherton Park Apartments is an affordable housing project partially funded by federal tax credits. Under federal guidelines, we are obligated to have this project designed, built, and have tenants in place within twenty-four (24) months of funding approval. Our funding was approved in January, 2001. If not completed within these time constraints, we -will loose our tax credit funding. Per our conversation with Mr. Rick Shiver Wednesday of this week, I understand that you may be considering the submittal of this amended application as the beginning of a second ninety (90) day review period. Our concern is that this additional ninety days, along with the previous review period, will total six months of our twenty-four month project, during which we cannot begin construction and which may eventually jeopardize our funding. In light of your overburdening workload and lack of an adequate staff, I would appreciate any consideration you can give to the expedition of this review process. Thank you for our help. Please feel free to call me if you have any questions. I remain Sincerely, Heatherton Park Limited Partnership OudVyre,VP Cc: Rick Shiver David Koss, PE James M. Ross, AIA File (06260111.doc) Attachments clF W A 7ER co r o -c Ms. Judy Core, Vice President Heatherton Park Limited Partnership 2700 Wycliff Road, Suite 312 Raleigh, NC 27607 Dear Ms. Core: Michael F. Easley, Governor William G. Ross, Jr., Secretary North Carolina Department of Environment and Natural Resources Gregory J. Thorpe, Ph.D., Acting Director Division of Water Quality Wilmington Regional Office October 15, 2001 Subject: REQUEST FOR ADDITIONAL INFORMATION Stormwater Project No. SW8 010628 Heatherton Park Apartments Onslow County The Wilmington Regional Office received a Stormwater Management Permit Application for Heatherton Park Apartments on September 15, 2001. A preliminary review of that information has determined that the application is not complete. The following information is needed to continue the stormwater review: The suggestion that the Division allow the collection swale beside Building 94 to be considered in lieu of a forebay might be possible if the swale beside Building #4 did not empty into the pond immediately adjacent the outlet structure. This is still considered short-circuiting the runoff, regardless of the amount of swale or lawn area sheet flow prior to it. The treatment is considered to be occurring in the pond, not the swale. A natural forested filter strip provides only 40% TSS removal, which does not satisfy the 85% TSS removal required for high density projects. All runoff from the impervious surfaces associated with this project must receive treatment in the pond by first passing through a forebay and then through the pond, as required by the rules, no exception. Please find a way to get this runoff into the forebay of the pond at the other end. I cannot permit this pond with such an obvious short-circuiting condition and without a forebay for that swale: 2. Based on the proposed grading, any roof drains located at the rear of Buildings 1, 2, 3, and 5 will cause runoff to leave the site untreated, bypassing the pond. I cannot approve any plans that do not provide sufficient grading to ensure collection of the roof drainage to the pond for treatment. Please show sufficient grading or the roof drain collection system to indicate how runoff from the buildings will get to the pond. _ 3. Sheet C-1 does not show any building dimensions, as referred to in your letter. Sheet C-I only shows dimensions from parking lots and property lines to the building faces. While helpful to the construction survey crews in locating the building, it does not help me to verify the square footage reported for the buildings on the application. Please revise. 4. Please change the note on sheet C-5 regarding the wetland species to be planted on the 6:1 shelf. The detail indicates it as General Note #1 found on sheet C-2, but it is actually General Note #4. N MENR N.C. Division of Water Quality 127 Cardinal Drive Extension Wilmington, N.C. 28405 (910) 395-3900 Fax (910) 350-2004 Customer Service 800-623-7748 Ms. Core October 15, 2001 Stormwater Project No. SW8 010628 ---------------------------------------------- 5. Please provide a copy of the reduced sheet C-2 with the 3.16 acre drainage area delineated. It was not included with the submittal. 6. As previously requested, please provide permanent pool dimensions. Some of the distances between pond contours are shown on Sheet C-2, but what I need are overall distances and radii for the 41.75 contour itself, not how far off the property fine or the fence line it is. While these distances are helpful for location, they do not convey the necessary information. The objective is to ensure that the surface area shown in the permit is provided. If the fence is not placed per the plan, or the building location is changed, the pond measurements based on those items will be incorrect, and may result in a deficient surface area. The new orifice design is an invitation for clogging. Item #23 from my September 12, 2001, letter was an either/or situation, not both. Built-in trash screening has now been provided by using a negative slope for the 4" pipe. Additional screening for the orifice is overkill. If the current design is used, another trash screen will be required to prevent floating debris from clogging the 3/4" drainage holes in the stainless steel trash filter. Additionally, the well created by the steel plate will trap large trash items in the bottom, clogging the 4"pipe. The simplest solution here is to delete the steel plate, keep the negative slope on the 4" pipe and drill a single orifice of the correct area (=1.3 square inches) at the correct elevation, into an endcap to be placed over the end'of the 4" pipe. Specify on the detail how far beneath the permanent pool the invert of the orifice will be. 8. Please report the correct orifice size on the supplement. If you keep the three 3/4" orifices, please report the orifice size as 3@ 3/4"T each. If you decide to use a single orifice drilled in an endcap, please report the drilled size, not the 4" size. The 4" pipe is not the controlling orifice. 9. The total of 27,195 ft2 and 37,773 ft2 is 64,968 ft2, not 63,568 ft2, as reported on the application. Please revise application or calculations as needed. 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 November 15, 2001, or the application will be returned as incomplete. The return of aproject will -necessitate resubmittal of all required items, including the application fee. If you need additional time to submit the information, please mail or fax your request for a time extension to the Division- 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 days from the receipt of a completed application to issue the permit. The construction of any impervious surfaces, other than a construction entrance under an approved Sedimentation Erosion Control Plan, is a violation of NCGS 143-215.1 and is subject to enforcement action pursuant to NCGS 143-215.6A. 0 Ms. Core October 15. 2001 _ Stormwater Project No. SV118 010628 ---------------------------------------------- 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 concerning this matter please feel free to call me at (910) 395-3900. Sincerely, Linda Lewis Environmental Engineer RSS/arl: S:IWQSISTORMWATIADDINF01010628.00T cc: Linda Lewis David Koss, P.E. 2. if this applit::ltiUrl is being subrnilltcd as lhl: result of a re:ne�ti'al or modificalion to an existing perlllil. list I he exislir$g perrnil number t�Jo and its issue date (if kno",n)___.__ 3. Specify tilt type of project (check one): -- Low Density � High Density _Redevelop General Permit _Other a 4. Additional Project Requirements (dieck ripphcable. blanks): -CAMA Major ✓Sedimentation/Erosion Control �404/401 Permit NPDES Stormwater Information on required state permits can be obtained by contacting the Customer Service Center at 1-977-623-6748. III, PROJECT INFORMATION 1. 111 Ilrc space provrticd hcloW, SLlrllIl ir•I%e how suer nixater %vial he treated. Also attach a detailed narrative (one to two pages) describin- 5tor"mwater management for the project . ----_._—AvNoPIc F4-�•INPOWIbus_ASChs'b 611 COLL_aC,0 lu A Wee 06jL:rNTW#J P-44 �ELVASC KAPr f/�-m P-tlo 1b Err 464vLATto B) as fLer srVc. VXV 2. Stormwater runoff from this project drains to the _ J'LW (tAt5 ohk-) River basin. 3. Total Project Area: �.as. acres 4. Project Built Upon Area: 3t' % 5. How many drainage areas does the project have? I 6. 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. Basin Infarrnatton Drainage Area I `=;; Drainage,:, ea-2 Receiving Stream Name 5A Jp q uIIJ 6XAAJr A Receiving Stream Class Drainage Area 3,,�,4` Existing Impervious' Area O _ Proposed Impervious*Area . 4t, h c. % Impervious* Area (total) 44e °In Irnpervlotis� Surface Aiea:.' ": Draina e Area 1 g D�'ama e /Area.2 g On -site Buildings 2'] ]efs -S i On -site Streets On -site Parking 31 7v 5 On -site Sidewalks Other on -site D Off -site p hh Totill: Co; 56 DjS I.'�ftef7� Total: Impervious area is defined as the built upon area includgig. but riot limited to, buildings, roads, parking areas, sidewalks, gravel areas, etc. Form SWU-101 Version 3.99 Page 2 of4 Permit No. 5 W S o l o 6 25 (10 be Provided kv D t.FO) State of North Carolina Department of Environment and Natural Resources Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM WET DETENTION BASIN SUPPLEMENT This form may be photocopied for use as an original DWQ Stormwater Management Plan -Review: A complete stormwater management plan submittal includes an application form, a wet detention basin supplement for each basin, design calculations, and plans and specifications showing all basin and outlet structure details. I. PROJECT INFORMATION Project Name: k-Afder'�Toto PARILAAArML--wrs Contact Person: DA%JzO L1. kess� Prr Phone Number: ( 2St) Z 31-413to For projects with multiple basins, specify which basin this work -sheet applies to: o 1A elevations Basin Bottom Elevation 3 S. 2 ft. (floor of the basin) Permanent Pool Elevation 413S ft. (elevation of the orifice) Temporary Pool Elevation Z ft, (elevation of the discharge structure overflow) areas Permanent Pool Surface Area sq, ft. (water suz face al ea at the orifice elevation) Draina;e Area 3.1 Lo ac. (on -site and off. -site drainage to the basin) Impervious Area 1. 4(c ac. (on-site'and off -site drainage to the basin) volumes Permanent Pool Volume 1 ? ,3 4 S cu. ft. (combined volume of main basin and fiorebay) Temporary Pool Volume S&ZS ry cu. ft. (volume detained above the permanent pool) Forebay Volume cu. ft. (approximately 20% of total volzrnze) Other parameters SA/DA 1 4 • (surface area to drainage area ratio from DWQ table) Diameter of Orifice 4 in. (2 to 5 day temporary pool draw -down required) Design Rainfall l in. Design TSS Removal z °]a % (nzinimum 85% required) Farm SWU-102 12ev 3.99 #, W/TSASi45r XPJ Paue l of 4 W.L. Fenner, P.E A.M. Clark, P.E. H.M. Long, P.E. D.M. Koss, P.E. FENNER & PROFFITT CONSULUNG ENGINEERS ,F_,P_J 125 W. BARNES S'1'RLIs'r 1 P.O. BOX 1265 I WILSON, N.C. 27894-1265 PHONE (252)237A 136 FAX (252)237A 138 E-MAIL - fenprof@onebox.com NCDENR Division of Water Quality 127 Cardinal Drive Extension Wilmington, NC 28405 Attn: Ms. Linda Lewis Heatherton Park Apartments Stormwater Management Plan Stormwater Project No SW8010628 Jacksonville, North Carolina Dear Ms. Lewis: October 31, 2001 RECEIVED NOV 0" 1 2001 PROD # S(ku y 0106908 We have received the latest comments on the Stormwater permit for the subject project and are proposing to modify the existing design as follows: Items 1 & 2 — In order to comply with the requirements listed, it will be necessary to raise the grades around several buildings and create a berni/swale to direct roof drainage from behind the apartment buildings to the parking areas. This will make sure that the runoff will be carried to the forebay as requested. This arrangement will also eliminate possible "short-circuiting" as suggested by the comments. (Sheet C-2) Item 3 — The building dimensions continue to be issue for this project so we have gone back to the computer files to get the actual dimensions for the roof areas rather than rely on the architect's information. We have determined that the areas listed are for the building foot print and do not include the roof "overhang". The result is to increase the impervious surface area for the buildings by about 500 sq ft. We have also re -checked the pavement/sidewalk area and have found some additional sidewalk, which was added by the City of Jacksonville running out to Commerce Road, which was not included in the original numbers. We now certify the impervious surface areas are correct as shown on the drawings and as now listed in the Stormwater permit application. Item 4 —The note reference on Sheet C-5 has been corrected as noted. .�i Page 2 Item 5 — A copy of the reduced Sheet C-2 with the 3.16 acres drainage area based on the revised grading is enclosed. Item 6 -- Pond dimensions for the 41.75 contours have been added to the C-1 drawing as requested, however, we use the computer to calculate the exact surface area being listed in the application. We certify that the area listed in the application is what will be provided and subject to some normal construction tolerances for land grading, will provide written as -built verification of the surface area by a registered surveyor if that is necessary. Item 7 & 8 — The design of the orifice/trash screen will be changed to delete the screen and provide the endcapldrilled hole. The detail on drawing C-5 has been revised accordingly. Item 9 — the total impervious area has been revised to include the additional area as noted in Item 3 along with an updated calculation package. The assistance of the Wilmington regional Office to complete work on this application as soon as possible will be greatly appreciated. Sincerely, avid M. Koss, PE Engineering Director �bl g� it gA---- ---------ti4��� I -t y lee �• � f • I / r, ���r � r�.•-' ter', `i j ,Yd. L,�S i %!- 125 W. BAR N 11S STREET P.O. 14OX 1265 WILSON, N.C. 27S94-1265 Project: Fenner & Proffitt CONSULTING ENGINEERS ELECTRICAL - MECHANICAL - CIVIL A6A*-Klb.-J P.44k- Prepared by: DV4— —Date: q 110 Sheet I of 5 AL — — . i a PHONE (252) 237-4136 FAX (252) 237-4138 .. .. .. .. ..... a- Ll EA)AAAJ6Af ri POOL 1 TCA W1046 4'uiu0fl(-: LAqw,"tr T) ALAJULJ .. .. .. .. ...... -PROJ- .......... 151C . .. .............. .... NOV �*fo4kttq - VKID7 9A -.20111 Dw (0 WX 0 ­ J- I QuAu z0J/zQ* I A EA------- 46 0i .... .. .. ... ... ... f--. ----- ----- ---- ---- Sim aid 5 2 ---------- 0. A� 1.4 A k 03 S ep"10,0 . .. .. ... ... . .... C 4T& 41 - �°-gyp Tss/�Mp l�_G��'9-��-1 Dv4d ....................... --- --�— ...... �-- ... .... . . ..... P0,1 �--�-- L r LIE, Z 1.75 -�---1I--i------• - - ------------ .. .. .... ..... AN 10 A�Lv 41115 I is ILA ST06441' . .. ...... ... .. .. .. ... .. .. .. .. . ............ . . ......... f6 0,'AAAl ft.W A4 . . . . . . . . . . . .. ... ... ... .. ­7 V QL�U .. .. ... ... 2-So p 1.4 .0e L IN 1?5 W. KARNES STREET 11.0. BOX 1265 WILSON, N.C. 27894-1265 Project: — Prepared by: Fenner & Proffitt CONSULTING ENGINEERS ELECTRICAL - MECHANICAL - QVIL Date: Sheet 2 of S PHONE (252) 237-4136 FAX (2521237-4138 P 00W Poac. .. .. .. .... ..... VoILU -- ------- A 4o[4- t 5'sz, ----- Sy .... .. .. .. ..... .... .. ....... .. ..... 41 .......... . t z koc� -74 (-.,D Ir . L L A Q#oA," 09 L V-0 L VJA 61 A-4 A bt r ... .. ........ -------- - ------- Y. -141a +'83 * &7 3J A -41- t 2-o . ............. SOS Jo 4z ....... ... .......... - . .............. .3 ' SYFi �_. CTU �.Ltf04A�j 4 .. XAIK) # , ._. .I .._ ! __.... --` ...... ---- - ------------ -i ... ... .. .. 1.;6 .. .. .. ... .. ...... ..... !T: 7� ... ..... . %,� I - _Tj _ owl."-_ T r I ! �-i- -_ _�-.__.. —_ ® Fenner & Proffitt 125 M BARNis sn:EEF CONSULTING ENGINEERS P.U. BOX 1?(,5 PHONF (252) 237-4136 wri SON, N.C. 27894-1265 ELECTRICAL • MECHANICAL CIVIL FAX (252) 237-4138 Project: Prepared by: Date: Sheet 3 of S - .............................. ............ E Usd Q FtIG Pr�cs W 0 41 �krd - --L--- --- _ 1 - {-_-......- -- --- --- __ -- .- --- root 1.315�... �a,e.l.t'►oU= _... ................ ... t ..-....- - - ...... .ofo3�1� 2�32.t Z 4v H 4[ /' ]MG L I�-; L I J IfitAsf 14 t '�> 85% TSS REMOVAL 30 FOOT VEGETATED FILTER REQUIRED DEPTH 3 3.5' 4.0' 4.5' 5.0' 5.5' 6.0' 6.5' 7.0' 7.5' IMP % 10% .9 .8 .7 .6 .5 0 0 0 0 0 20% L7 1.3 1.2 1.1 To .9 .8 .7 .6 .5 30% 2.5 2.2' 1.9 1.8 1.6 1.5 1.3 1.2 LO 9 40 % 3.4 3.0 2.6 2.4 2.1 1.9 1.6 1.4 L 1 1.0 5 0 % 4.2 3.7 3.3 13.0 2.7 12.4 2.1 1.8 1.5 1.3 60 % 5.0 4.5 '3.8 3.5 3.2 2.9 2.6 2.3 2.0 1.6 70 % 6.0 5.2 4.5 4.1 3.7 *3.3 2.9 2.5 2.1 1.8 80 % 6.8 6.0 5.2 4.7 4.2 3.7 3.2 2.7 2.2 2.0 90 % 7.5 6.5 5.8 5.3 4.8 4.3 3.8 3.3 2.8 1.3 100 % 8.2 7.4 6.8 6.2 1 5.6 5.0 4.4 3.8 3.2 2.6 *Revised 10/31/97 90% TSS REMOVAL NO VEGETATED FILTER REQUIRED DEPTH 3' 3.5' 4.0' 4.5' 5.0' 5.5' 6.0' 6.5' 7.0' 7.5' IMP % 10 % 1.3 1.0 .8 .7 .6 .5 .4 .3 .2 .1 20 % 2.4 2.0 1.8 1.7 1.5 1.4 1.2 1.0 .9 .6 30 % 3.5 3.0 2.7 2.5 2.2 1.9 1.6 1.3 1.1 .8 40 % 4.5 3.5 3.1 2.8 2.5 2.1 1.8 1.4 1.1 5 0 % 5.6 5 4.3 3.9 3.5 3.1 2.7 2.3 1.9 1.5 60 % 7.0 6.0 5.3 4.8 4.3 3.9 3.4 2.9 2.4 1.9 70 % 8.1 7.0 6.0 5.5 5.0 4.5 3.9 3.4 2.9 2.3 80 % 9.4 8.0 7.0 6.4 5.7 5.2 4.6 4.0 3.4 2.8 90 % 10.7 9.0 7.9 7.2 6.5 5.9 5.2 4.6 3.9 3.3 100 % 12.0 10.0 8.8 8.1 7.3 6.6 5.8 5.1 4.3 3.6 Note: The required surface area calculated from the tables is to be provided at the permanent pool elevation. sEdbbf Si S I U it I t p p 7 / BM 50 / Jacksonville Airporl / BM 47x, 47' 30" U'n Ceq r -_l�• ••• a BM A wcale Golf Coors / 43 0 BM 40 ,5 1 VO 'oast ;Lrna J1 e�fLQ .1"o corrt]]=O y imege y' ♦1 1470 II C �^ `,'bk:r'r Nr '� �,eS+ ♦ {J a iodide •� �y.� � •�• . j3M 26. A "�C � • � Mc SimF., adi0•TowCr. � t ]e51 7050 ni f,. titi• '•. f ( I` �.. Count Merno 'aosl --�. � • _- B �K 3949 •,�I3ell Fork 35 �� I =.{�:' 39�'.,�`i_: t*.'i.�•• t�+.� $UbSfaf lOn • C + N - 4 S• a4n - �� � j �•. • 1Va. Radio Towcr yL f' � { ie I s.,� i rrL : �%' �' �9 t � 1 � \\\��/j7 . _ � `•?-\�� �Jl 01 �- ats F,,x i y jK ,, ,� ��i'�ir 1i� +k. lr, � �- ! � \fI I�., •r� "•). •`/'�� i�h __ -�.�u� � � �'C Sa:Hfy I un '�! '�t �,O Bi •F�L{.I FF ...i• �.l\ �• il�� :1�•��•���q' �•r''_.r- �a •s� .;� ` rf ,�y� ',_..�,c�i * � IF o Ra to lower LA New ltrver ork 1J q 1308 34°45' vcMr. 75' ]80C 1,TCAIQR_GEULOG CAL SURVEY. ACSTON. VORGINIA_1978 77°22'30" '7S ]81 s auum ROAD LASSIFICATION l MILE � r primary highway, Light -duty road, hard or :LT hard surface -._...-_ ... improved surface ... �° Secondary highway, hard surface...Unimproved road Interstate Route C3 U. S. Route O Stale Route _ r rn = s - r; �Vaf�_� ALISON A. POCRAT, ASLA LANDSCAPE ARCHITECT / LAND PLANNER 106 SCeepbank Dr. Cary, NC 27511 (919) 363-4415 DATE: A/u/01 T0: i)c"c LOSS FAX NUMBER: 23 7 - 1-E 13 T RE: TOTAL NUMBER OF PAGES I NCLUDINC COVER: NOTE., uric: c,ll Alc'y" 6 i. c NoII(oSt. �. " ,� G3rouQ5 biR �3Gn�5 --•.. 0n( Aof i1-.< 1p�Jc/ �ev�i aft( �Of v fct Fr? Oux leucl ofr%vm cus (CAu.r Srr,r.r�W,:,-� nr\ i c [ a � ; 4 n, c � 4k o' f wk t 01 1 1o'>l! cornci5 Vsc: VS V$t, �V5 f SoQkGk(lost. 10! C�V Vp�CI �CVc[ L Gley lyc.ci lis r sc� q:lra.scos ,mc6c�'wk05, { o5, ow,f , �JGn:CL; a��►,� e e� Se WC✓►tits f �e d -St✓, �r L.�-'.yam IUCI ii 11 ((��` tG1r nJJr fir. II l fff STORMWATER MANAGEMENT PLAN Heatherton Park Apartments RECEIVED Jacksonville, North Carolina NOV 0 1 2001 SITE BASELINE DATA DWQ A. General Description PROD # OCo2� Site is one of last undeveloped areas on Commerce Avenue. Local area consists of Single and multi -family housing; lots to the west, south and east are currently developed. Commerce is one block off US Hwy 17 which is currently occupied by considerable commercial development. Access to site will be via driveway from Commerce Avenue. B. Existing Drainage Site is generally flat with most surface drainage running towards the existing drainage ditch along the rear of the property. All of the surface runoff originates within the site area. Stormwater from the surrounding residential areas drain to Sandy Run Branch. With all of the existing development, most of the stormwater runoff is collected in storm drains and transported via channelized drainage ditches. C. Proposed Drainage Plan Runoff from the roof areas of the apartment buildings will discharge via gutters and downspouts to the lawn areas around the buildings. Runoff from the lawn areas will collect in shallow swales and be carried to the parking areas. All runoff from the parking areas will discharge to the stormwater retention pond. The new impervious surface represents about 38% of the total site area, The remaining areas include mostly lawns, landscape buffers, and the area reserved for the retention pond. There is no system of curb/yard inlets and stormwater piping, all runoff is carried through the site via sheet flow. D. Stormwater Plan Due the restricted site area and the location of the existing drainage ditch, the best management practice (BMP) selected for this development is a shallow stormwater retention pond. The pond will serve as a combined filter to improve the quality of the stormwater and a means to reduce the peak outflow released to the ditch offsite. the pond area and forebay have been sized based on NCDENR criteria with a vegetated perimeter. The system will hold the first one inch of runoff from the impervious surfaces for slow release over an extended period and should provide the 90% TSS removal required by the regulations. Page 2 Plant material for the pond perimeter will be selected from the recommended vegetation listed in the BMP stormwater manual. A secondary BMP being employed at this site involves the use of lawns and grass swales to collect and hold the runoff from the building roof drains. The lawn areas will slowdown the runoff rate, provide some filtering, and reduce the peak outflow from the design storm. The outflow device for the retention pond involves a simple concrete structure consisting of extended detention pipe, outflow weir, trash rack, and outlet pipe. with the high water table in this area, the pond elevation is expected to remain at about elevation 40 ft +1- even during extended drought conditions. With the outlet to the existing drainage ditch at about elevation 40 ft+ and a high water table, the pond can not be completely drained via the outlet pipe. A temporary pump would be required at the outlet structure to completely drain the pond area. E. Maintenance Plan The proper operation of this BMP will require annual maintenance as listed in the Wet Detention Basin Supplement. The two primary maintenance activities involve clearing any obstructions at the outlet structure and removing accumulated sediment in the forebay area. With the high water table, there should not he a problem with establishing a vegetative shelf around the pond area. Since the development expects young children as part of the resident population, a fence is provided around the entire pond area. Direct access to the pond is provided via the adjacent parking area through a wide gate in the perimeter fence. I Michael F. Easley, Governor William G. Ross, Jr., Secretary North Carolina Department of Environment and Natural Resources Gregory J. Thorpe, Ph.D., Acting Director Division of Water Quality Wilmington Regional Office September 12, 2001 Ms. Judy Core, Vice President Heatherton Park Limited Partnership 2700 Wycliff Road, Suite 312 Raleigh, NC 27607 Subject: REQUEST FOR ADDITIONAL INFORMATION Stormwater Project No. SW8 010628 Hcatherton Park Apartments Onslow County Dear Ms. Core: The Wilmington Regional Office received a Stormwater Management Permit Application for Heatherton Park Apartments on July 5, 2001. 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. Section III, Part 6 of the application is very inconsistent. Please explain/correct these items. A. If the total project area is 4.05 acres, and the drainage area is 9.65, then there must be some offsite runoff, but that box is marked as "0". Conversely, Section III, Part 7 indicates that the offsite area was determined by USGS topographic maps. Which offsite area is this referring to? B. If you have 2.00 acres of existing BUA and 2.00 acres of proposed BUA, then the total BUA is 4 acres. The application lists only 1.46 acres. C. How did you determine that the Project BUA percentage is 36%? 2. This is not a general permit. Please check the "High Density" blank. 3. The impervious area listed on the supplement is 1.48 acres, which is different from the 1.46 reported on the application. Please check, correct and revise. 4. Please fill in the SA/DA ratio blank on the supplement. 5. Per the calculations, the design rainfall for the pond is 1 ", not 7". Please revise the supplement. 6. If you design a pond using the 85% TSS chart, you MUST provide a 30' vegetated filter for the outflow from the pond. An existing ditch does not qualify as the vegetated filter. The vegetated filter must be provided before the runoff enters the watercourse. See attached detail. MAN N.C. Division of Water Quality 127 Cardinal Drive Extension Wilmington, N.C. 28405 (910) 395-3900 Fax (910) 350-2004 Customer Service 800-623-7748 Ms. Core September 12, 2004 Stormwater Project No. SW8 010628 ---------------------------------------------- 7. Site geometry is not a valid reason to not provide the required 3:1 L: W ratio. Please redesign to provide the required ratio. 8. Please show the forebay wall location on the plans, and specify the 6:1 shelf width and location on the plans. 9. The forebay volume is required to be between 18%-22% of the permanent pool volume. Please revise. 10. Please locate the vegetated shelf below the permanent pool. It- Please label the contour elevations in the pond. At a minimum, please show the bottom, permanent pool and temporary pool contours. 12. The inlet is located too close to the outlet and will cause short-circuiting. Please bring the runoff into the pond at one side, and relocate the outlet structure so that it is as far as possible from the inlet. See enclosed sketch. 13. Item "m" on the supplement must be provided, regardless of a high water table. A portable pump can be specified. Please initial. 14. Please show the locations of all roof drains. If roof drains are located along the rear of buildings 1, 2, 3 or 5, the runoff will bypass the pond, which is not acceptable. 15. Please provide a typical dimensioned building footprint, and dimension building #6. 16. Please dimension each line and arc of the permanent pool contour. 17. Please place the cross-section detail of the proposed wet pond and the outlet structure detail on the plans. Label the required 3:1 slope above permanent pool, the 10' wide, 6:1 vegetated shelf, the forebay, permanent pool and temporary pool elevations, orifice size, etc. 18. Please specify the wetland plant species to be planted on the 6:1 shelf. 19. There are two swales entering the pond at two corners. Please direct all runoff that drains into the pond through the required forebay. 20. Please delineate the entire drainage area to the pond, both onsite and offsite. 21. Please seal the pond design calculations. The calculations do not address all the minimum requirements. Please calculate the minimum required surface area at permanent pool. The drawdown orifice sizing must be based on the orifice equation. The 4" specified is much too large. See enclosed example from the workshops. Ms. Core September 12, 2001 Stormwater Project No. SW8 010628 --------------------------------------------- 22. The pond depth must be maintained at least Y deep at all times. Please revise the sediment cleanout elevations on the supplement form. 23. Please either place the orifice at an angle (negative slope) or specify a trash screen to prevent clogging. See enclosed sketch from the workshops. 24. Please specify the type of trash rack to be provided. The openings in the trash rack must be a maximum of 4" OC13W. 25. The low flow outlet valve shown on the plans must be in the "Closed" position during normal pond operation. 26. Please specify the invert of the 15" CMP oulet pipe. 27. The surface area and volume provided in the pond are deficient, and the 4" y is too large. Please check, correct and revise the calculations. k 28. The forebay volume is not supposed to be added to the 1" volume to obtain the total volume. 29. The required minimum 1" volume must include the runoff from the entire drainage area, including the pervious areas. Please revise. 30. Please correctly show the proposed grading in the area of the pond. The 43 contour is shown crossing over the pond contours, which is not possible. 31. Please either delineate all wetlands on site, disturbed or undisturbed, or note on the plans that none exist. 32. Please add the nearest intersection of two major roads to the vicinity map. A major road is. considered any 1, 2, or 3 digit NC highway, US highway, or interstate. 33. Please report all built -upon areas in square feet on the application. 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 October 12, 2001, or the application will be returned as incomplete. Tlie 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 your request for a time extension to the Division 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 days from the receipt of a completed application to issue the permit. The construction of any impervious surfaces, other than a construction entrance under an approved Sedimentation Erosion Control Plan, is a violation of NCGS 143-215.1 and is subject to enforcement action pursuant to NCGS 143-215.6A. Ms. Core September 12, 2001 Stormwater Project No. SW8 010628 ---------------------------------------------- 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 concerning this matter please feel free to call me at (910) 395-3900. Sincerely, Linda Lewis Environmental Engineer RSS/arl: S:1WQSISTORMWATIADDINF01010628.SEP cc: Linda Lewis David Koss, P.E. OFFICE USE'ONLr Date Received Fee Paid Permit Number L JIUC.� State of North Carolina Department of Environment and Natural Resources Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM This form may be photocopied for use as an original 1. GENERAL INFORMATION 1. Applicants name (specify the name of the corporation, individual, etc. who owns the project): Heatherton Park Limited Partnership 2. Print Owner/Signing Official's name and title (person legaliy responsible for facility and compliance): Jvjo { Gone- Ulccf PAe's»vtr,Js 3. Mailing'Address for person listed in item 2 above: 2700_ wycliff Road_, Suite 312 City:__ Raleigh State:- N _ C_ Zip:2Z607 _ Telephone Number: 91 9 51 0- 4. Project Name (subdivision, facility, or establishment name - should be consistent with project name on plans, specifications, letters, operation and maintenance agreements, etc.): Heatherton Park Apartments. 5. Location of Project (street address): Commerce Road City:Jacksonville County: Onslow G. Directions to project (from nearest major intersection): From Jacksonville on US17 turn right on_Wor_kshop Rd., turn left on Commerce Road, Site ise. pty fieLd on the right 1 Z 1 t 7. Latitude: 3'�a . �I '4''" �(a -Longitude:� " � 5 of project S. Contact person who can answer questions about the project: Name: David M_ Koss, PE Telephone Number: 11. PERMIT INFORMATION: 1. Specify whether project is (check one): X New Renewal Modification Form SWU-101 Version 3.99 Page i of 2. If this application is being submitted as the result of a renewal or modification Loan existing permit, list the existing permit number N ° and its issue date (if known) 3. Specify the type of project (check one): Low Density High Density Redevelop v1 General Permit Other 4. Additional Project Requirements (check applicable blanks): CAMA Major ✓Sedimentation/Erosion Control _404/401 Permit �NPDES Stormwater Information on required state permits can be obtained by contacting the Customer Service Center at 1-877-623-67.48, 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 . — RuNofo kom I MPe dugs A4e&5 'To 66 rPLL.CcTcb_ fu Joel Oe"Te-Nftoo PeNO, Re$l'ise; Aft r4.m ppv Tb 6e 4!y1yt.A1r~+o B bUM i STAULIJA9 . 2. Storrnwater runoff from this project drains to the PLO 1, Whti C {� bil _ River basin. 3. Total Project Area `1 ��� acres 4. Project Built Upon Area: 36 % 5. How many drainage areas does the project have? t 6. Complete the following information for each drainage area. If there are more than two drainage areas in the project, attach an additional sheet with the information far ach area provided in the same format as below. Basin Information�H ..,..Y..,._..... ..... ...n ��... -... ..- a , }, 5�a,Drariaage Area l� _ t y'' ,. ... _...,. -. .... ....._ n "�yr Y,�Dratnage Area 2,� - _ Receiving Stream Name 5A0'0 �G Receiving Stream Class I��Grt Drainage Area C.64.he Cli'6 A a-z— Existing Impervious" Area { net r Zp- AZ Proposed Impervious*Area Mli d ,Do A % Impervious* Area {total} 14 2 o 0040 .`impervious ;Surface Area : Drains e Area 1 g . .... Drairi e Area 2' }'' On -site Buildings ,S$ On -site Streets W1A On -site Parking On -site Sidewalks (1Ne�Jp�p) Other on -site p Off -site p Total: q {o Total: " Impervious area is defined as the built up—in-anea16cluding, but not limited to, buildings, roads, parking areas, sidewalks, gravel areas, etc. Form SWU-101 Version 3.99 Page 2 of 7. How was the off -site impervious area listed above derived? -- US4S fbPaC5RAP 11k4 JA Pr -- E5'r1.AAfE0 IV. DEED RESTRICTIONS AND PROTECTIVE COVENANT' The following italicized 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. 1. The following covenants are intended to ensure ongoing compliance with state stormwater management permit number as issued by the Division of Water Quality. These covenants may not be changed or deleted without the consent of the State. 2. No more than square feet of any lot shall be covered by structures or impervious materials. Impervious materials include asphalt, gravel, concrete, brick, stone, slate or similar material but do not include wood decking or the water surface of swimming pools. 3. Swales shall not be felled in, piped, or altered except as necessary to provide driveway crossings. 4. Built -upon area in excess of the permitted amount requires a state stormwater management permit modification prior to construction. 5. All permitted runoff from outparcels or future development shall be directed into the permitted stormwater control system. These connections to the stormwater control system shall be performed in a manner that maintains the integrity and performance of the system as permitted. By your signature below, you certify that the recorded deed restrictions and protective covenants for this project shall include all the applicable items required above, 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 lot. 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) 733-5083 for the status and availability of these forms. Form SWU-102 Wet Detention Basin Supplement Form SWU-103 Infiltration Basin Supplement Form SWU-104 Low Density Supplement Form SWU-105 Curb Outlet System Supplement. Form SWU-106 Off Site System Supplement Form SWU-107 Underground -Infiltration Trench Supplement Form SWU-108 Neuse River Basin Supplement Form SWU-109 Innovative Best Management Practice Supplement Form SWU-l0l' Version 3.99 Page 3 of VI. SUBMITTAL REQUIREMENTS Only complete application packages will be accepted and reviewed by the Division of Water Quality (DWQ). A complete package includes all of the items listed below. The complete application package should be stibmitted to the appropriate DWQ Regional Office. Please indicate that you have provided the following required information by initialing in the space provided next to each item" • Original and one copy of the Stormwater Management Permit Application Form • One copy of the applicable Supplement Form (s) for each BMP • Permit application processing fee of $420 (payable to NCDENR) • Detailed narrative description of stormwater treatment/management • Two copies of plans and specifications, 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): Fenner & Proffitt Inc. David ' Mailing Address: P.O. Box 1265 1 2 5 W _ Barnes 5f=reet _ City: Wilson Phone: (,252 _ ) 237-41 36 VIII. APPLICANT'S CERTIFICATION State: __N _ C_ Zip: 27894 Fax: ( 252 ) 237-413R _ I, (print or type name of person listed in General Information, item 2) 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 enants will be recorded, and that the proposed project complies with the requirements of 15A NCAC 2H :1fl00. f Q Signature: Date: g .� � I Foma SWU-101 Version 3.99 Page 4 of 4 Permit No. .M>yV 6 G/UG%zG (to be pnvided hi+ DWQ) State of North Carolina Department of Environment and Natural Resources Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM WET DETENTION BASIN SUPPLEMENT This form may be photocopied for use as an original DWO Stormwater Management Plan Review: A complete stormwater management plan submittal includes an application farm; - a wet detention basin supplement for each basin, design calculations, and plans and specifications showing all basin and outlet structure details. I. PROJECT INFORMATION 1 I Project Name- 9L,- A-N0Jf°a pAAkl �tQ�►'�M�+.r�5 - — - Contact Person: ^ DA`' w Al *,3s, Piz • Phone Number: (Zs?) L51- 4 in. For projects with multiple basins, specify which basin this worksheet applies to: N lA elevations Basin Bottom Elevation S9. ° ft. Permanent Pool Elevation 41-n, ft. Temporary Pool Elevation 4 P.sa ft. (floor of the basin) (elevation of the orifice) (elevation of the discharge structure overfloiv) areas Permanent Pool Surface Area sq. ft. (water surface area at the orifice elevation) Drainage Area 4-as ac. (on -site and off -site drainage to the basin) Impervious Area I.4$ ac. (on -site and off -site drainage to the basin) volumes Permanent Pool Volume Temporary Pool Volume Forebay Volume } 7rpoc cu. fi• jo,onp cu. ft. 2,6 cu. ft. (combined volume of main basin and forebay) (volunie detained above the permanent pool) (approximately 20% of total volume) Other parameters SA/DAI (surface area to drainage area ratio from DWQ table) Diameter of Orifice 4 in_ (2 to 5 day temporar); pool drain -down required) Design Rainfall ° in/". Design TSS Removal' % (minimum 85% required) Form 5WU-102 Rev 3.99 Page I of 4 Footnotes: When using the Division SA/DA tables, the correct SA/DA ratio for permanent pool sizing should be computed based upon the actual impervious % and permanent pool depth. Linear interpolation should be employed to determine the correct value for non- standard table entries. 2 In the 20 coastal counties, the requirement for a vegetative filter may be waived if the wet detention basin is designed to provide 90% TSS removal. The NCDENR BMP manual provides design tables for both 85% TSS removal and 90% TSS removal. 1I. REQUIRED ITEMS CHECKLIST The following checklist outlines design requirements per the Stormwater Best Management Practices Manual (N.C. Department of Environment, Health and Natural Resources, February 1999) and Administrative Code Section: 15 A NCAC 2H .1008. Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If the applicant has designated an agent in the Stormwater Management Permit Application Form, the agent may initial below. If a requirement has not been met, attach justification. N )A Is a. The permanent pool depth is between 3 and 6 feet (required minimum of 3 feet). b. The forebay volume is approximately equal to 20% of the basin volume. c. The temporary pool controls runoff from the design storm event. d. The temporary pool draws down in 2 to 5 days. e. If required, a 30-foot vegetative filter is provided at the outlet (include non -erosive flow calculations) The basin length to width ratio is greater than 3:1. { 51;J 45i ToML7T" The basin side slopes above the permanent pool are no steeper than 3:1. A submerged and vegetated perimeter shelf with a slope of 6:1 or less (show detail). Vegetative cover above the permanent pool elevation is specified. A trash rack or similar device is provided for both the overflow and orifice. A recorded drainage easement is provided for each basin including access to nearest right- of-way. t 0 krf-S Acttr5s Ifl a/A�i&ylkt+�c, �l If the basin is used for sediment and erosion control during construction, clean out of the basin is specified prior to use as a wet detention basin. m. A mechanism is specified which will drain the basin for maintenance or an emergency. .(Al44r444v,vo ujA8M T14ht,9) III. WET DETENTION BASIN OPERATION. AND MAINTENANCE AGREEMENT The wet detention basin system is defined as the wet detention basin, pretreatment including forebays and the vegetated filter if one is provided. This system (check one) 0 does does not incorporate'a vegetated filter at the outlet (Exlsflo4 006A) This system (check one) 0 does § does not incorporate pretreatment other than a forebay. Form SWU-102 Rev 3.99 Page 2 of 4 Maintenance activities shall be performed as follows: 1. After every significant runoff producing rainfall event and at least monthly: a. Inspect the wet detention basin system for sediment accumulation, erosion, trash accumulation, vegetated cover, and general condition. b. Check and clear the orifice of any obstructions such that drawdown of the temporary pool occurs within 2 to 5 days as designed. 2. Repair eroded areas immediately, re -seed as necessary to maintain good vegetative cover, mow vegetative cover to maintain a maximum height of six inches, and remove trash as needed. 3. Inspect and repair the collection system (i.e. catch basins, piping, swales, riprap, etc.) quarterly to maintain proper functioning. 4. Remove accumulated sediment from the wet detention basin system semi-annually or when depth is reduced to 75% of the original design depth (see diagram below). Removed sediment shall be disposed of in an appropriate manner and shall be handled in a manner that will not adversely impact water quality (i.e. stockpiling near a wet detention basin or stream, etc.). The measuring device used to determine the sediment elevation shall be such that it will give an accurate depth reading and not readily penetrate into accumulated sediments. When the permanent pool depth reads OZ•19 feet in the main pond, the sediment shall be removed. When the permanent pool depth reads feet in the forebay, the sediment shall be removed. BASIN DIAGRAM (Jill in the blankv) 0 Permanent Pool Elevation Sediment Re oval El. 3t•15 -----------jr75o Sediment Removal Elevation 39•00 75% Bottom Ele anon 3ca _ ------------------------------------- -------- ----- Bottom Elevation:fl� $ 25%, .POREBAY 'MAIN.POND 5. Remove cattails and other indigenous wetland plants when they cover 50% of the basin surface. These plants shall be encouraged to grow along the vegetated shelf and forebay berm. b. if the basin -must be drained for an emergency or to perform maintenance, the flushing of sediment through the emergency drain shall be minimized to the maximum extent practical. Fonn S WU- 102 Rev 3.99 Page 3 of 4 7. All components of the wet detention basin system shall be maintained in good working order. I acknowledge and agree by my signature below that I am responsible for the performance of the seven 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:V ct'D Vice � Title: V i Ce 2— Phone:. -_ "i _" - to/ U` Signature:~ 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, �:TO-iZ7l AEI Ct -I n (t- _ -,a Notary Public for the State of 4) r / 1 k 4� County of Oa. V , do hereby certify that � M . C o r e— personally appeared before me this I I -tj\_ day of Ma -SOU ' •, and acknowledge the due execution of the forgoing wet detention basin maintenance requirements. Witness my hand and official seal, • e �A PUBUC, v' C O t l ,���I1111111 LI�� SEAL My commission expires • 9- '7 ' ayQ.S Farm SWU-102 Rev 3.99 Page 4 of 4 STORMWATER MANAGEMENT PLAN Heatherton Park Apartments Jacksonville, North Carolina SITE BASELINE DATA A. General Description Site is one of last undeveloped areas on Commerce Avenue. Local area consists of Single and multi -family housing; lots to the west, south and east are currently developed. Commerce is one block off US Hwy 17 which is currently occupied by considerable commercial development. Access to site will be via driveway from Commerce Avenue. B. Existing Drainage Site is generally flat with most surface drainage running towards the existing drainage ditch along the rear of the property. All of the surface runoff originates within the site area. Stormwater from the surrounding residential areas drain to Sandy Run Branch. With all of the existing, development, most of the stormwater runoff is collected in storm drains and transported via channelized drainage ditches. C. Proposed Drainage Plan Runoff from the roof areas of the apartment buildings will discharge via gutters and downspouts to the lawn areas around the buildings. Runoff from the lawn areas will collect in shallow swales.and be carried to the parking areas. All runoff from the parking areas will discharge to the stormwater retention pond. The new impervious surface represents about 36% of -the total site area, The remaining areas include mostly lawns, landscape buffers, and the area reserved for the retention pond. There is no system of curb/yard inlets and stormwater piping, all runoff is carried through the site via sheet flow. D. Stormwater Plan Due the restricted site area and the location of the existing drainage ditch, the best management practice (BMP) selected for this development is a shallow stormwater retention pond. The pond will serve as -a combined filter to improve the quality of the stormwater and a means to reduce the peak outflow released to the ditch offsite. the pond area and forebay have been sized based on NCDENR criteria with a vegetated perimeter. The system will hold the first one inch of runoff from the impervious surfaces for slow release over an extended period and should provide the 85% TSS removal required by the regulations. page 2 Plant material for the pond perimeter will be selected from the recommended vegetation listed in the BMP stormwater manual. A secondary B1VIP being employed at this site involves the use of lawns and grass swales to collect and hold the runoff from the building roof drains. The lawn areas will slowdown the runoff rate, provide some filtering, and reduce the. peak outflow from the design storm. The outflow device for the retention pond involves a simple concrete structure consisting of extended detention pipe, outflow weir, trash rack, and outlet pipe. with the high water table in this area, the pond elevation is expected to remain at about elevation 40 ft +/- even during extended drought conditions. With the outlet to the existing drainage ditch at about elevation 40 ft+ and a high water table, the pond can not be completely drained and a pond drain has not been provided. R Maintenance Plan The proper operation of this BMP will require annual maintenance as listed in the Wet Detention Basin Supplement. The two primary maintenance activities involve clearing any obstructions at the outlet structure and removing accumulated sediment in the forebay area. With the high water table, there should not be a problem with establishing a vegetative shelf around the pond area. Since the development expects young children as part of the resident population, a fence is provided around the entire pond area. Direct access to the pond is provided via the adjacent parking area through a wide gate in the perimeter fence. W.E. Penner, P.L A.M. Clark, P.L. H.M. Long, P.L. I.M. Koss, P.E. FENNER & PROFFITT CONSULTING ENGINEERS F's—P125 W. BARNES STRUT/ P.O. BOX 1265 I WILSON, N.C. 27894-1265 PHONE (252)237-4136 FAX (252)237-4138 E-MA1I, - fcnprofazdnctmail.cnm NCDENR — Division of Water Quality 127 Cardinal Drive Extension Wilmington, North Carolina 28405 Attn: Ms. Linda Lewis Environmental Engineer Heatherton Park Apartments Stormwater Management Project # SW8010628 Jacksonville, North Carolina Dear Ms. Lewis: September 26, 2001 RECEIVED SEP - 2 B 2001 DWQ PRQJ # We have reviewed the comments provided in the DWQ letter of September 12, 2001 and have prepared a written response to each of the 33 items listed. Many of our responses have attempted to follow the specific wording in the NCDENR Stormwater Management Manual as to how the wet detention pond is intended to properly function. An updated application, completely revised Form SWU-102 and project design drawings are enclosed. Since this project involves 40 low-income housing units funded by tax credits, we have very little flexibility in trying to adjust the site area to accommodate the specific shape of the retention pond discussed in the DWQ comments. Since this site involves a considerable amount of lawn area and no piped stormwater, it appears that the Stormwater Management Manual can be interpreted to treat to residential roof drainage using the lawn areas as "vegetated" buffers separate from the pavement areas. Specific changes to the design documents based on the DWQ comments are as follows: 1) Unfortunately, Form SWU-101 is confusing as to the "receiving stream" data; we provided information on the Drainage Area for Sandy Run Branch; it appears that the "basin" information should have been limited to the project site. These valves have been revised accordingly. 2) Form SWU-101 has been revised to check the "High Density" project type. 3) Impervious area -- The total impervious area for this project is 1.46 acres, the 1.48 acres was copied in error and has now been revised on page 1 of SWU-102. 2 4) SAIDA Ratio — Since there appears to be no "credit" available for the vegetated ditch at the outfall from the proposed retention pond, we have used the 90% TSS chart and have selected a value of 4.6. 5) Design Rainfall — This parameter is very confusing as the design rainfall for the "system" is the 7 inches per hour mandated by the Erosion Control guidelines. The 1" of rainfall shown in our calculations is only used to determine the "water quality treatment volume". We have revised Form SWU-102 to list 1" to satisfy the comment, however, the system/outlet structure is designed to safely pass the 10-year, 5-min storm. 6) Vegetated Filter — We have interpreted the existing ditch running along the rear property line as a man-made drainage feature and not a natural "watercourse". To comply with the comment, we will use the 90% TSS chart as noted above. 7) Retention Pond Shape — This appears to be a major problem area in trying to develop this site. The Architect has established the site layout as shown on the site plan and provided the triangular area for the retention pond. The minor portion of roof drainage associated with this project is being routed through considerable lawn area that is recognized by the Stormwater Manual as a type of "vegetated buffer". Prior to attempting to re -design this entire project, we suggest that the quality of the runoff entering the main pond from the south ditch will not need the "forebay" area as would be required for the runoff from the parking area pavements. S) Forebay :Location — This information, including the 6.1 shelf has been added to the design drawings. 9) Forebay Volume — As shown in the revised calculations, the permanent pool volume is 17,345 cult; the forebay volume is 3682 cult. This amounts to about 21 % of the permanent pool volume. The revised the shape of the forebay area meets this requirement. 10) Vegetated Shelf — The vegetative shelf is shown in the calculations to be below the permanent pool level of 41.75 ft. A section thru the retention pond has been added to the design drawings to show this requirement. 11) Pond Geometry — The contours in and around the pond area have been added to the design drawings. 12) Pond Outlet — As noted in our response to .Item 47, we intend to try to keep the pond at the location shown; the outlet has been moved to achieve the maximum distance. 13) Pond Drain — We will specify a portable pump which can be used to drain the pond area as requested. 14) Roof Drains — We do not have specific locations from the architect regarding the downspouts, however, since there is no piped drainage to concentrate the runoff, all roof drainage will discharge to open lawn areas. The current design considers the lawn areas and grass swales to be a continuous vegetative filter which will help to improve water quality before the runoff reaches to retention pond. 15) Building Dimensions — Building dimensions are provided on drawing C-1. 16) Pond Dimensions -- Specific pond dimensions have been added to the design drawings. 17) Pond Cross Section — See Item # 10 1 S) Plantings -- The "wetland plant species" to be installed as part of the 6:1 shelf have been added as a note to the cross-section shown on Sheet C-2. 19) Swales — See Item 47 and Item #14 ; we are using these swales as vegetative filters which would preclude the need to pass through the forebay area. 20) Retention Pond Drainage Area — We have marked a reduced copy of drawing C-2 to show the pond drainage area and have used this area in the revised calculations. 21) Outlet Size — The 2" outlet size suggested by the comment has been questioned in the workshop we attended as being too to easily clogged and requiring constant maintenance. A better solution would be to use the 4" pipe with a stone filter or trash screen at the inlet to limit the outflow and reduce the maintenance requirement. 22) Pond Depth — Since this will be an excavated pond, we will need to increase the average pond depth to 3.5 ft to allow some sediment accumulation. The cleanout elevations have been revised accordingly. 23) Orifice Orientation — We agree that the outlet pipe should be placed at a reverse angle and have added a detail for the outlet structure to Drawing C-5. 24) Trash Rack — The details for the trash rack are now shown in the detail for the outlet structure on Drawing C-5. 25) Outlet Valve -- A note has been added to the outlet structure detail to require this valve to be in the "closed" position. 26) Outlet Pipe — The invert of the outlet pipe is (40.50 ft); this is now shown in the outlet structure detail. 27) The calculations have been updated to address questions regarding the items noted. lI 28) Forebay Volume — Please refer to the updated calculations. 29) Temporary pool Volume — The revised calculations (using the "Simple Method") show the temporary pool volume to be essentially the same as presented in our original submittal. 30) Pond Grading — Please refer to the revised grading and drainage plan shown on Drawing C-2. 31) Wetlands — As noted in the approved erosion control plan, no "wetland" areas have been identified on this site. (See General Note 4 on Sheet C-2) 32) Location Map — A location map is shown on the cover sheet. 33) BUA quantities — All build-up areas have been noted on the application forms and on the drawings in square feet. We hope this information will satisfy the Division of Water Qualities need for additional information regarding the proposed development. Since the stormwater regulations are relatively new requirements and that the Stormwater BMP Manual provides considerable flexibility in meeting the intent of the State Statues, we request that we work together to expedite the issuance of the Stormwater management Permit for this project. Sincerely, d e - avid M. Koss, PE Engineering Director Jul 19 01 02.32p FENNER & PROFFITT, INC 252-237-4138 FENNER & PROFFITT ® CONSULTING ENGINEERS 125 W. BARNES STREET! P.O. BOX 12651 WILSON, T.C. 27894-1265PHO r 1 J��Jj 1�7 (252)237-4136 FAX FA.X (252)237-1138 E-MAIL fenprof@zdnclmail.com oj I1lud.� lnttl Itt-?Iltll To: Linda Lewis NCDENR Fax No-- (91.0) 350-2004 From: Dave Koss Stormswater Permit Total Pages Including Cover Page: I Message: Linda: I received your e-mail on Monday and have left messages with some questions regarding our application. Plans -- The plans for this project were provided back in May confirmed by an e-mail dated May 8, 2001. Do you still have these plans or do we need need to send two replacement copies? Built -on Areas — This information is provided on sheet C-1 of the drawings and listed in the "site data" block. The information listed in Part III (6) on the application is given in acres, do these values need to be given in square feet (?), please clarify. Section V1II - Do we need to send a new original with Ms. Core's name printed on the sheet or can we mark a copy and fax it to your office? For the SAIDA value, I have used the chart for the 90% TSS and have determined this ratio to be 3.8 for this site. Following the calculation in the BMP manual, the required surface area is 6700 sgft As for s table of accumulated volumes, the pond shown is man-made with fixed dimensions, the volume is simply surface area times depth as opposed to a natural basin where the surface area would change with depth. Please call so we can discuss p.1 City of Jacksonville Engineering TO: A�- �G*50N VIL1,E � � •c Caraing Community NOME OF00, LETTER OF TRANSMITTAL Divi i n pf Environm n al Manamment 127 Cardinal Drive -Extension__ Wi min n N Phone # (910) 395-3900 Linda: WE ARE SENDING YOU _ PRINTS _ COPY OF LETTER DESCRIPTION: Date: June 11, 2001 Attn: Ms. Linda Lewis ' .'.IV JUN 1 Ref. Erosion & Sedimentation Heatherton.Park off Qf C 9r3)`mcrce Drjyc XX ATTACHED _ UNDER SEPARATE COVER XX PLANS _ SPECIFICATIONS XX OTHER copy of the financial responsibility statement THESE ARE TRANSMITTED AS CHECKED BELOW: _ FOR APPROVAL _ AS REQUESTED _ FOR REVIEW AND COMMENT XX FOR YOUR USE _ DOCUMENTS ARE DUE TO BE RETURNED BY: _ PRINTS RETURNED AFTER LOAN TO US _ OTHER REMARKS: (i Tom Anderson, Engineering Specialist COPIES TO: File Post Office Box 128 • Jacksonville, North Carolina 28541 • (910) 938-5249 • TDD# (910) 455-8852 • FAX (910) 455-6761 FROM Ross/Becl<ard Architects, P. A. PHONE NO. : 919 875 9200 Oct. 11 1999 05:02PM P2 FINANCIAL RESPONSIBILITY/OR>bi8R88IP FORM SEDIMMATION POLLUTION CONTROL ACT No person may initiate a land -disturbing activity on one or more acres as covered by the Act before this form and an acceptable erosion And sedimentation control plan have been completed and approved by the Land Quality Section, N.C. Department of Environment, Health, and Natural Resources. (Please typo or print and, if question is not applicable, place »/A in the blank). Part A. 1. Project Name Z. 3. 4. Location of land -di tur in act v County City or Township � ('�( I C. Approximate date land -disturbing activity will be commenced-, Purpose of development (residential., commercial, industrial, etc.) : ?- �("Iq L `/ Total acreage disturbed or uncoverod ( including off -site borrow and waste areab ) 6. Amount of fee enclosed 7� Has an erosion and sedimentation control plan been filed? Yes , ✓ No Enclosed a. Person to contact, should sediment control issues arise during land -disturbing activity. r CJr e V c-x n i ) Telephon Ct S � Q ` CG C,06GC 9. Landowner(s) of Record (Use blank page to list additional owners): •H.D. Sou�r}-c��N ... Name(s) o. pox current maillng—Addreea _ Current Street Address �}P�UC�NVIL�G— � 2Ssg l City State zip ,,,, pp city state Zip 10. Recorded in Deed Book No. lilC�V Page No.(0 � I. Person(a) or firm(e) who are financially responsible for this land -disturbing activity (Uae a blank page to. list additional persona or fisrms): 1 I �'� 'c � ►�+��SJ�1 r P Rama of erson(s) or Firm(s) V-JYC. L-1 FF aJ{ 2- Mailing Addrees u3— U I—t N City State p °1Iq. 5io- gc0e0 Telephone Street a8dreas City State zip Telephone � 1 ADP-1. 7 ?0-01 1 0/ 1 1 /99 51{),N' 1.7: 49 f `I'X/RX NO 82571 FROM Ross/Deckard Architects, P.A. PHONE NO. 919 875 9200 Oct. 11 1999 05:03PM P3 (a) If the Financially Responsible Party is. not a rusident of north Carolina give name and street a$drass of a North Carolina Agent. Name syg Address Street Addre9a My State Yip City state sip alephone Telephone (b)If the Financially Responsible Party is a Partnership or other person engaging La buninoan under an assumed name, attach a copy of the certificate of assumed name. If the 1rinancially Responsible party is a Corporation give name 'need street address of the Registered Agent. _ Name of Registered 'Agent 31 Z iiai inq see Street'Address _ City State Lip City State sip qlq. 10. 9 (0(,00 Telephone - Telephone The above information is true and correct to the best of my knowledge and belief and was provided by we under oats. (This fokm must be signed by•r-he financially responsible, person if an individual or his attorney -ire -fact or if not an individual by an officer, director, 'partner, or registered agent with authority to 4,xecute instruments for the financially responsible person). I agree to provide corrected information should there be any change in the information provided herein. Pr1,-4,kr_1 r-1 L-1 G r pr nt name Title or Authority Date a Jrotary public of the County of State of Forth Carolina, hereby certify that appeared personally before me this day and ire n��y wworu 4.c)mo�.rle q that t a above form was executed by him. Witness my hand and notar Seal v0 19� 10/1.1/99 MOO' 17:49 [TX/RRX NO 82571 "State of N rih 'Carolina Department of Environment and Natural Resources Wilmington Regional Office Michael F. Easley, Governor William G. Ross Jr., Secretary Division of Water Quality CERTIFIED MAIL #7000 1530 0001 0444 2210 RETURN RECEIPT REQUESTED Mr. H. D. Southerland PO Box 628 Jacksonville, NC 28541 Subject Dear Mr. Southerland: June 22, 2001 REQUEST FOR STORMWATER MANAGEMENT PERMIT APPLICATION Heatherton Park Stormwater Project No. SW8010628 Onslow County On June 13, 2001, the Wilmington Regional Office received a copy of an Erosion & Sedimentation Pollution Control Act for Heatherton Park. The North Carolina Administrative Code requires any project that must receive either Sedimentation and Erosion Control Plan approval and/or a LAMA Major permit to apply for and receive a Stormwater Management Permit by the Division of Water Quality. Any construction on the subject site, prior to receipt of the required permit, will constitute a violation of 15A NCAC 2H.1000 and may result in appropriate enforcement action by this Office. Either a Stormwater Permit Application Package including 2 sets of plans, completed application form, fee, and supporting documentation, or a written response regarding the status of this project and the expected submittal date must be received in this Office no later than July 13, 2001. Failure to respond to this request may result in the initiation of enforcement action, and construction may experience a subsequent delay. The NPDES 010000 Federal Stormwater Permit that accompanies the Erosion Control Plan approval letter must NOT be considered the Coastal Stormwater Management Permit, which will be signed by the Water Quality Supervisor. Please reference the Project Number above on all correspondence. If you have any questions, please call me at (910)- 395-3900. Sincerely, Linda Lewis Environmental Engineer RSS/arl: S:1WQSISTORMWATISTORMSUB1010628.JUN cc: Mitchell Parker, Onslow County Inspections David Koss Jim Gregson [;inch -Lewis Central Files 127 Cardinal Dr. Ext., Wilmington. North Carolina 28405 'Telephone 910-395-3900 FAX 910-350-2004 An Equal Opportunity Affirmative Action Emplover 500/6 reeveled/10°/. post -consumer paper Postal CERTIFIED MAIL REbEIPT (Domestic '' r F F C A U S A ru • !ri Postage $ d tr1:j._4' I J�,1 Certified Fee a Q i Postmark Retom Receipt Fee40 a dorsement RequrU4 :� ?� Q Restricted Delivery Fee © {Endorsement RegLdTOA © Total Postage 6 Fees $3•� 0 M Se To Ln cJ %j -- r' Street pt. No.; or PO C3a Box No. G 4--------- ........ , Q City, tate,ZlP 4 ------------ -----------------•------ r11 r11 ■ Complete items 1, 2, and 3. Also complete item 4 if Restricted Delivery is desired. ■ Print your name and address on the reverse so that we can return the card to you_ ■ Attach this card to the back of the mailpiece, or on the front if space permits. 1. Article Addressed to: n by Datg of /— X (k��Av, ' `❑ Agent El Addressee D. Is delivery address different from item 1? If YES, enter delivery address below: ❑ No 3. Service Type B-Certified Mail ❑ Express Mail ❑ Registered ❑ Return Receipt for Merchandise ❑ Insured Mail ❑ C.O.D. 4, Restricted Delivery? (Extra Fee) ❑ Yes 2, Article Number (Copy from service label) _ 700n r S + 0 19061 PS Form 3811, July 1999 Domestic Return Receipt 102595-00-M-o952 UNITED STATES POSTAL ZE PJ� � Firs �tass'M'ai1-4 P M J v5P e 81 Fees Pali l ' Jul -PerrNLNo-G-R4—� ` Sender: Please print your name, address, and ZIP+4 in this box • State of North Car0lina DI NR 127 Cardinal Drive Ext. Wilmington, NC 29405 (AUn: Bev) '.j..'84 F,: I I 1 111111111111 11 i 1 I I I I 111111111111 Shelf Nortb Carolina bepartmertt of Environment and Natural Resources Wilmington Regional Office Michael F. Easley, Govcrnor William G. Ross Jr., Secretary Division of %Alater Quality .tune 22, 2001 CERTIFIED MAIL 07000 1530 0001 0444 2210 RETURN RECEIPT REQUESTED Mr. H. D. Southerland PO Box 628 Jacksonville, NC 28541 y NCDENR NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES RECEIVED JUL 0 5 2001 DWQ PROD # Subject: REQUEST FOR STORMWATER MANAGEMENT PERMIT APPLICATION 1-leatherton Park Stormwater Project No. SW8010628 Onslow County Dear Mr. Southerland: On June 13, 2001, the Wilmington Regional Office received a copy of an Erosion & Sedimentation Pollution Control Act for Heatherton Park. The North Carolina Administrative Code requires any project that must receive either Sedimentation and Erosion Control Plan approval and/or a CAMA Major permit to apply for and receive a Stormwater Management.Permit by the Division of Water Quality. Any construction on the subject site, prior to receipt of the required permit, will constitute a violation of 15A NCAC 2H.1000 and may result in appropriate enforcement action by this Office. Either a Stormwater Permit Application Package including 2 sets of plans, completed application form, fee, and supporting documentation, or a written response regarding the status of this project and the expected submittal date must be received in this Office no later than July 13, 2001. Failure to respond to this request may result in the initiation of enforcement action, and construction may experience a subsequent delay. The NPDES 010000 Federal Stormwater Permit that accompanies the Erosion Control Plan approval letter must NOT be considered the Coastal Stormwater Management Permit, which will be signed by the Water Quality Supervisor. Please reference the Project Number above on all correspon(Ience. If YOU have any cluestions, please cal l me at (910)- 395-3900. Sincerely, Linda Lewis Environmental Engineer RSS/arl: S:1WQSISTORMWATISTORMSUB1010628.JUN cc: Mitchell Parker, Onslow County Inspections 4r"eson im Linda Lewis Central Files 127 Cardinal Dr. Ext., Wilmington, North Carolina 28405 'telephone 910-395-3900 FAX 910-350-2004 An Isqual Opportunity Affirmative Action I,mpinycr 50'Y(1 recycled110%, posl-consumer paper