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HomeMy WebLinkAboutSW8110227_Current Permit_20111031 Arc sir NCDENR North Carolina Department of Environment and Natural Resources Division of Water Quality Beverly Eaves Perdue Coleen H. Sullins Dee Freeman Governor Director Secretary October 31,2011 Gary Parker, Town Administrator Town of Sunset Beach 700 Sunset Boulevard North Sunset Beach, NC 28468 Subject: State Stormwater Management Permit No.SW8 110227 Sunset Beach Boating Access Area High Density Commercial infiltration Basin Project Brunswick County Dear Mr. Parker: The Wilmington Regional Office received a complete State Stormwater Management Permit Application for Sunset Beach Boating Access Area on October 31,2011. Staff review of the plans and specifications has determined that the project, as proposed,will comply with the Stormwater Regulations set forth in Session Law 2008-211 and Title 15A NCAC 2H.1000. We are forwarding Permit No.SW8 110227 dated October 31.2011,for the construction, operation and maintenance of the BMP's and built-upon area associated with the subject project. This permit shall be effective from the date of issuance until June 24, 2021, and shall be subject to the conditions and limitations as specified therein. Please pay special attention to the Operation and Maintenance requirements in this permit. Failure to establish an adequate system for operation and maintenance of the stormwater management system will result in future compliance problems. If any parts, requirements,or limitations contained in this permit are unacceptable,you have the right to request an adjudicatory hearing by filing a petition with the Office of Administrative Hearings(OAH). The petition must conform to Chapter 150B of the North Carolina General Statutes,and must be filed with the OAH within thirty(30)days of receipt of this permit. A petition is considered filed when it is received in the Office of Administrative Hearings during normal office hours.The OAH accepts filings Monday through Friday between the hours of 8:00 a.m.and 5:00 p.m., except for official state holidays. The petition may be filed by facsimile(fax)or electronic mail by an attached file (with restrictions)-provided the signed original,one(1)copy and a filing fee(if a filing fee is required by NCGS §150B-23.2)is received in the OAH within seven(7)business days following the faxed or electronic transmission. Unless such demands are made this permit shall be final and binding.You should contact the OAH with all questions regarding the filing fee and/orthe details of the filing process. The mailing address,telephone and fax numbers for the Office of Administrative Hearings are:6714 Mail Service Center, Raleigh, NC 27699-6714.Telephone 919-733- 2698. FAX 919-733-3378. If you have any questions,or need additional information concerning this matter, please contact Kelly Johnson, at (910)796-7215. Si erely, (.7 tt-A-0, 30.____EV For Coleen Sullins, Director Division of Water Quality GDS/kpj: S:IWQS\Stormwater\Permits&Projects120111110227 HD12011 10 permit 110227 cc: Tom Covington,P.E.,NCWRC Town of Sunset Beach Building Inspections Brunswick County Engineering Debbie Wilson, DCM Wilmington Wilmington Regional Office Stormwater File Wilmington Regional Office 127 Cardinal Drive Extension,Wilmington,North Carolina 28405 N One 7�� Phone:910-796-72151 FAX:910-350-20041 Customer Service:1-877-623-6748 o thCarohna Internet:www.ncwaterquality.org Naturally An Equal Opportunity 1 Affirmative Action Employer State Stormwater Management Systems Permit No. SW8 110227 STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF WATER QUALITY STATE STORMWATER MANAGEMENT PERMIT HIGH DENSITY COMMERCIAL DEVELOPMENT In accordance with the provisions of Article 21 of Chapter 143, General Statutes of North Carolina as amended, and other applicable Laws, Rules, and Regulations PERMISSION IS HEREBY GRANTED TO Town of Sunset Beach Sunset Beach BAA 101 Sunset Boulevard, Sunset Beach, Brunswick County FOR THE construction, operation and maintenance of one (1) infiltration basin in compliance with the provisions of Session Law 2008-211 and 15A NCAC 2H .1000 (hereafter collectively and separately 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 June 24, 2021, and shall be subject to the following specified conditions and limitations: I. DESIGN STANDARDS 1. This permit is effective only with respect to the nature and volume of stormwater described in the application and other supporting data. 2. This stormwater system has been approved for the management of stormwater runoff as described in Section 1.8 on page 3 of this permit. The stormwater control has been designed to handle the runoff from 34,915 square feet of impervious area. 3. This basin has been designed to handle the 10 year 24 hour storm volume without discharging; therefore, the offline bypass and vegetated filter strip are waived. 4. The tract will be limited to the amount of built-upon area indicated in Section 1.8 of this permit, and as shown on the 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. Page 2 of 7 State Stormwater Management Systems Permit No. SW8 110227 6. The runoff from all built-upon area within the permitted drainage area of this project must be directed into the permitted stormwater control system. 7. The project shall provide a 50' wide vegetated buffer adjacent surface waters, measured horizontally from and perpendicular to the normal pool of impounded structures, the top of bank of both sides of streams and rivers, and the mean high water line of tidal waters. 8. The following design criteria have been permitted for the infiltration basin and must be provided and maintained at design condition: a. Drainage Area, Acres: 1.31 Onsite, ft` 57,050 Offsite, ft2: 0 b. Total Impervious Surfaces, ft2: 34,915 Onsite, ft : 34,915 Offsite, ftz: 0 c. Design Storm, inches: 6.99 d. Basin Depth, feet: 1.0 e. Bottom Elevation, FMSL: 14.0 f. Bottom Surface Area, ft: 7,604 g. Bypass Weir Elevation, FMSI�: N/A (waived) h. Permitted Storage Volume, ft : 19,966 i. Type of Soil: fine sand j. Expected Infiltration Rate, in/hr: 23.0 k. Seasonal High Water Table, FMSL: 10.0 I. Time to Draw Down, hours: 4.9 m. Receiving Stream/River Basin: ICWW/ LBR59 n. Stream Index Number: 15-25 o. Classification of Water Body: "SA HQW" II. SCHEDULE OF COMPLIANCE 1. The stormwater management system shall be constructed in its entirety, vegetated and operational for its intended use prior to the construction of any built-upon surface. 2. During construction, erosion shall be kept to a minimum and any eroded areas of the system will be repaired immediately. 3. The permittee shall at all times provide the operation and maintenance necessary to assure the permitted stormwater system functions at optimum efficiency. The approved Operation and Maintenance Plan must be followed in its entirety and maintenance must occur at the scheduled intervals including, but not limited to: a. Semiannual scheduled inspections (every 6 months). b. Sediment removal. c. Mowing and revegetation of slopes and the vegetated filter. d. Immediate repair of eroded areas. e. Maintenance of all slopes in accordance with approved plans and specifications. f. Debris removal and unclogging of bypass structure, infiltration media, flow spreader, catch basins, piping and vegetated filter. g. A clear access path to the bypass structure must be available at all times. 4. 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. Page 3 of 7 State Stormwater Management Systems Permit No. SW8 110227 5. 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. 6. 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. 7. Records of maintenance activities must be kept for each permitted BMP. The reports will indicate the date, activity, name of person performing the work and what actions were taken. 8. 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 the conditions of 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. 9. Access to the stormwater facilities shall be maintained via appropriate easements at all times. 10. 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. Redesign or addition to the approved amount of built-upon area or to the drainage area. c. Further development, subdivision, acquisition, lease or sale of any, 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. d. Filling in, altering, or piping of any vegetative conveyance shown on the approved plan. 11. The permittee shall submit final site layout and grading plans for any permitted future areas shown on the approved plans, prior to construction. 12. The Director may notify the permittee when the permitted site does not meet one or more of the minimum requirements of the permit. Within the time frame specified in the notice, the permittee shall submit a written time schedule to the Director for modifying the site to meet minimum requirements. The permittee shall provide copies of revised plans and certification in writing to the Director that the changes have been made. III. GENERAL CONDITIONS 1. Approved plans and specifications for this project are incorporated by reference and are enforceable parts of the permit. 2. This permit is not transferable to any person or entity except after notice to and approval by the Director. At least 30 days prior to a change of ownership, or a name change of the project or of the permittee or a mailing address change, the permittee shall submit a completed and signed Name/Ownership Change form to the Division of Water Quality, accompanied by the appropriate documentation as listed on the form. The approval of this request will be considered on its merits and may or may not be approved. Page 4 of 7 State Stormwater Management Systems Permit No. SW8 110227 3. The permittee is responsible for compliance with all permit conditions until such time as the Division approves the transfer request. Neither the sale of the project in whole or in part, nor the conveyance of common area to a third party shall constitute an approved transfer request. 4. 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. 5. 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. 6. 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. 7. 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. 8. The permit issued shall continue in force and effect until revoked or terminated. 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. 9. Unless specified elsewhere, permanent seeding requirements for the stormwater controls must follow the guidelines established in the North Carolina Erosion and Sediment Control Planning and Design Manual. 10. The issuance of this permit does not prohibit the Director from reopening and modifying the permit, revoking and reissuing the permit, or terminating the permit as allowed by the laws, rules and regulations contained in Session Law 2008- 211, Title 15A NCAC 2H.1000, and NCGS 143-215.1 et. al. 11. The permittee shall submit a permit renewal application at least 180 days prior to the expiration date of this permit. The renewal request must include the appropriate documentation and the processing fee. Permit issued this the 31st day of October 2011 NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION " J or oie H. Sullins, 'rector Division of Water Quality By Authority of the Environmental Management Commission Page 5 of 7 State Stormwater Management Systems Permit No. SW8 110227 Sunset Beach Boating Access Area Stormwater Permit No. SW8 110227 Brunswick County Designer's Certification 1, , as a duly registered in the State of North Carolina, having been authorized to observe (periodically/weekly/full time) the construction of the project, (Project) for (Project Owner) hereby state that, to the best of my abilities, due care and diligence was used in the observation of the project construction such that the construction was observed to be built within substantial compliance and intent of the approved plans and specifications. The checklist of items on page 2 of this form is included in the Certification. Noted deviations from approved plans and specification: SEAL Signature Registration Number Date Page 6 of 7 State Stormwater Management Systems Permit No. SW8 110227 Certification Requirements: 1. The drainage area to the system contains approximately the permitted acreage. 2. The drainage area to the system contains no more than the permitted amount of built-upon area. 3. All the built-upon area associated with the project is graded such that the runoff drains to the system. 4. All roof drains are located such that the runoff is directed into the system. 5. The bypass structure weir elevation is per the approved plan. 6. The bypass structure is located per the approved plans. 7. A Trash Rack is provided on the bypass structure. 8. All slopes are grassed with permanent vegetation. 9. Vegetated slopes are no steeper than 3:1. 10. The inlets are located per the approved plans and do not cause short- circuiting of the system. 11. The permitted amounts of surface area and/or volume have been provided. 12. All required design depths are provided. 13. All required parts of the system are provided. 14. The required system dimensions are provided per the approved plans. cc: NCDENR-DWQ Regional Office Town of Sunset Beach Building Inspections Page 7 of 7 Permit Number:`�" ffj/� I7 (to be provided r DWQ) Drainage Area Number: Infiltration Basin Operation and Maintenance Agreement I will keep a maintenance record on this BMP. This maintenance record will be kept in a log in a known set location. Any deficient BMP elements noted in the inspection will be corrected,repaired or replaced immediately. These deficiencies can affect the integrity of structures,safety of the public,and the removal efficiency of the BMP. Important maintenance procedures: - The drainage area will be carefully managed to reduce the sediment load to the infiltration basin. - Immediately after the infiltration basin is established,the vegetation will be watered twice weekly if needed until the plants become established (commonly six weeks). - No portion of the infiltration basin will be fertilized after the initial fertilization that is required to establish the vegetation. - The vegetation in and around the basin will be maintained at a height of approximately six inches. After the infiltration basin is established,it will be inspected once a quarter and within 24 hours after every storm event greater than 1.0 inches (or 1.5 inches if in a Coastal County). Records of operation and maintenance will be kept in a known set location and will be available upon request. Inspection activities shall be performed as follows. Any problems that are found shall be repaired immediately. BMP element: Potential problem: How I will remediate the problem: The entire BMP Trash/debris is present. Remove the trash/debris. The perimeter of the Areas of bare soil and/or Regrade the soil if necessary to infiltration basin erosive gullies have formed. remove the gully,and then plant a ground cover and water until it is established. Provide lime and a one-time fertilizer application. The inlet device: pipe or The pipe is clogged(if Unclog the pipe. Dispose of the swale applicable). sediment off-site. The pipe is cracked or Replace the pipe. otherwise damaged(if applicable). Erosion is occurring in the Regrade the swale if necessary to swale(if applicable). smooth it over and provide erosion control devices such as reinforced turf matting or riprap to avoid future problems with erosion. OCT 14 Z011 Form SW401-Infiltration Basin O&M-Rev.3 1 of 3 BMP element: Potential problem: How I will remediate the problem: The forebay Sediment has accumulated Search for the source of the and reduced the depth to 75% sediment and remedy the problem if of the original design depth. possible. Remove the sediment and dispose of it in a location where it will not cause impacts to streams or the BMP. Erosion has occurred or Provide additional erosion riprap is displaced. protection such as reinforced turf matting or riprap if needed to prevent future erosion problems. Weeds are present. Remove the weeds,preferably by hand. If pesticides are used,wipe them on the plants rather than spraying. The main treatment area A visible layer of sediment Search for the source of the has accumulated. sediment and remedy the problem if possible. Remove the sediment and dispose of it in a location where it will not cause impacts to streams or the BMP. Replace any media that was removed in the process. Revegetate disturbed areas immediately. Water is standing more than Replace the top few inches of filter 5 days after a storm event. media and see if this corrects the standing water problem. If so, revegetate immediately. If not, consult an appropriate professional for a more extensive repair. Weeds and noxious plants are Remove the plants by hand or by growing in the main wiping them with pesticide(do not treatment area. spray). The embankment Shrubs or trees have started Remove shrubs or trees to grow on the embankment. immediately. An annual inspection by an Make all needed repairs. appropriate professional shows that the embankment needs repair. The outlet device Clogging has occurred. Clean out the outlet device. Dispose of the sediment off-site. The outlet device is damaged Repair or replace the outlet device. The receiving water Erosion or other signs of Contact the NC Division of Water damage have occurred at the ' Quality 401 Oversight Unit at 919- outlet. 1733-1786. RECEJVEli OCT 14 2011 BY: Form SW401-Infiltration Basin O&M-Rev.3 Page 2 of 3 Permit Number: (to be provided by DWQ) '11 OCT 6 Pm4:17 I acknowledge and agree by my signature below that I am responsible for the performance of the maintenance procedures listed above. I agree to notify DWQ of any problems with the system or prior to any changes to the system or responsible party. Project name:Sunset Beach Boating Access Area BMP drainage area number:1 Print name: Cott C AR.kc . Title: Tor NI/win I zkZ To . W D n eg Sun 3*-4- IS eA c.L. Address: flOtt n Su IIS l ��ViL 14.. air15�e_4 Be�'cl.) lsl C.. 04 (pc 0 Phone: '"11 D - 5')9 - C4L2 q 9 Signature: ,,, ",. Date: _3 e -4/ 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, L—i%Sps 4 . 1 1s� i n ,a Notary Public for the State of M.64.- L Q1 tr c1A , County of unSu Ic . ,do hereby certify that GiACL PATZ.k.22.. personally appeared before me this day of&FA-e,r/be::Z. , kit ,and acknowledge the due execution of the forgoing infiltration basin maintenance requirements. Witness my hand and official seal, 4(71LA/)6"- 9)7. '76:4—' ,:. 0 v % - /jellef 1111�\ SEAL My commission expires ina-tiv'J� c20 (Cp if(112,- --r) OCT 14 2011 Form SW401-Infiltration Basin O&M-Rev.3 Page 3 of 3 DWQ USE ONLY Date Received Fee Paid Permit Number le7t14,-5- Applicable Rules: 0 Coastal SW-1995 0 Coastal SW-2008 0 Ph II-Post Construction (select all that apply) 0 Non-Coastal SW-HQW/ORW Waters 0 Universal Stormwater Management Plan 0 Other WQ Mgmt Plan: 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 I. GENERAL INFORMATION 1. Project Name(subdivision,facility,or establishment name-should be consistent with project name on plans, specifications,letters,operation and maintenance agreements,etc.): Sunset Beach Boating Access Area 2. Location of Project(street address): IR CEi I i r') 101 Sunset Blvd 0 C T 14 2011 City:Sunset Beach County:Brunswick Zip:28468 3. Directions to project(from nearest major intersection): B ' From the intersection of Hwy 904 and Hwy 179 in Seaside,take 904 South towards Sunset beach. Follow 904/Sunset Boulevard until it dead ends at the water. 4. Latitude:33°52'56.47"N Longitude:78°30'40.18"W of the main entrance to the project. IL PERMIT INFORMATION: 1.a.Specify whether project is(check one): :New ®Modification b.If this application is being submitted as the result of a modification to an existing permit,list the existing permit numberSW8 110227 ,its issue date(if known)fune 24,2011 ,and the status of construction: Not Started ['Partially Completed* ❑ Completed* *provide a designer's certification 2. Specify the type of project(check one): ❑Low Density ZHigh Density ['Drains to an Offsite Stormwater System ['Other 3. If this application is being submitted as the result of a previously returned application or a letter from DWQ requesting a state stormwater management permit application,list the stormwater project number,if assigned,N/A and the previous name of the project,if different than currently proposed,N/A 4.a.Additional Project Requirements(check applicable blanks;information on required state permits can be obtained by contacting the Customer Service Center at 1-877-623-6748): ZCAMA Major Sedimentation/Erosion Control:1.12 ac of Disturbed Area ❑NPDES Industrial Stormwater Z404/401 Permit:Proposed Impacts b.If any of these permits have already been acquired please provide the Project Name,Project/Permit Number, issue date and the type of each permit:CAMA Major-117-10,401 Water Quality Certification#3846 COW SAW-2009-01206 General Permit 198000291,S&EC Permit BRUNS-2012-004 Form SWU-101 Version 07Jun2010 Page 1 of 6 III. CONTACT INFORMATION 1.a.Print Applicant/Signing Official's name and title(specifically the developer,property owner,lessee, designated government official,individual,etc.who owns the project): Applicant/Organization:Gary Parker,Town of Sunset Beach Signing Official&Title: b.Contact information for person listed in item la above: Street Address:700 Sunset Boulevard North City:Sunset Beach State:NC Zip:28468 Mailing Address(if applicable): City: State: Zip: Phone: (910 ) 579-6297 Fax: Email:gparker@atmc.net c.Please check the appropriate box.The applicant listed above is: ®The property owner(Skip to Contact Information,item 3a) ❑Lessee*(Attach a copy of the lease agreement and complete Contact Information,item 2a and 2b below) ❑Purchaser*(Attach a copy of the pending sales agreement and complete Contact Information,item 2a and 2b below) ❑Developer*(Complete Contact Information,item 2a and 2b below.) 2.a.Print Property Owner's name and title below,if you are the lessee,purchaser or developer. (This is the person who owns the property that the project is located on): Property Owner/Organization: Signing Official&Title: b.Contact information for person listed in item 2a above: Street Address: ,�1" City: State: Mailing Address(if applicable): OCT 1 4 2011 City: State: Phone: ( ) Fax: ( ) Email: 3.a. (Optional)Print the name and title of another contact such as the project's construction supervisor or other person who can answer questions about the project Other Contact Person/Organization:Tom Covington,PB,NC Wildlife Resources Commission Signing Official&Title: b.Contact information for person listed in item 3a above: Mailing Address:1720 Mail Service Center City:Raleigh State:NC Zip:27699-1720 Phone: (919 ) 707-0154 Fax: (919 ) 707-0162 Email:tom.covington@ncwildlife.org 4. Local jurisdiction for budding permits:N/A Point of Contact:N/A Phone#: ( ) Form SWU-l01 Version 07Jun2010 Page 2 of 6 ' IV. PROJECT INFORMATION 1. In the space provided below,briefly summarize how the stormwater runoff will be treated. The site has been designed to capture as much as practical,and all stormwater within the drainage area will sheet flow to an infiltration basin that has been designed so that no bypass,no filter strip,or no additional storage volume is needed. 2.a.If claiming vested rights,identify the supporting documents provided and the date they were approved: ❑Approval of a Site Specific Development Plan or PUD Approval Date: ❑Valid Building Permit Issued Date: ❑ Other: Date: b.If claiming vested rights,identify the regulation(s)the project has been designed in accordance with: ❑Coastal SW-1995 ❑Ph II-Post Construction 3. Stormwater runoff from this project drains to the Lumber River basin. 4. Total Property Area:1.77 acres 5. Total Coastal Wetlands Area:0 acres 6. Total Surface Water Area:0 acres 7. Total Property Area(4)-Total Coastal Wetlands Area(5)-Total Surface Water Area(6)=Total Project Area+:1.77 acres + Total project area shall be calculated to exclude the following: the normal pool of impounded structures, the area between the banks of streams and rivers, the area below the Normal High Water(NHVV)line or Mean High Water (MHVV)line,and coastal wetlands landward from the NHW(or Miff)line. The resultant project area is used to calculate overall percent built upon area(BUA). Non-coastal wetlands landward of the NI-W(or MHVV)line may be included in the total project area. 8. Project percent of impervious area: (Total Impervious Area/ Total Project Area)X 100 =60 % 9. How many drainage areas does the project have?1 (For high density,count 1 for each proposed engineered stormwater BMP. For low density and other projects,use 1 for the whole property area) 10. Complete the following information for each drainage area identified in Project Information item 9. If there are more than four drainage areas in the project,attach an additional sheet with the information for each area provided in the same format as below. Basin Information Drainage Area 1 Drainage Area_ Drainage Area_ Drainage Area_ Receiving Stream Name Intracoastal WW Stream Class * SA/HQW Stream Index Number* 15-25 Total Drainage Area(sf) 57050 On-site Drainage Area(sf) 57050 Off-site Drainage Area(sf) 0 Proposed Impervious Area**(sf) 34,915 % Impervious Area**(total) 61.2% Impervious**Surface Area Drainage Area 1 Drainage Area_ Drainage Area_ Drainage Area_ On-site Buildings/Lots(sf) 0 On-site Streets (sf) 17,423 On-site Parking (sf) 17,492 On-site Sidewalks (sf) 0 G IV L,1.) Other on-site (sf) 0 O C T 1 4011 Future(sf) 0 Off-site (sf) 0 I Existing BUA***(sf) 0 P Total (sf): 34,915 * Stream Class and Index Number can be determined at: http://portal.ncdenr.org/web/wq/ps/csu/classifications ** Impervious area is defined as the built upon area including, but not Iimited to,buildings,roads,parking areas, sidewalks,gravel areas,etc. ***Report only that amount of existing B LIA that will remain after development. Do not report any existing BUA.that is to be removed and which will be replaced by new BLIA. Form SWU-101 Version 07Jun2010 Page 3 of 6 11. How was the off-site impervious area listed above determined?Provide documentation.N/A Projects in Union County: Contact DWQ Central Office staff to check if the project is located within a Threatened& Endangered Species watershed that may be subject to more stringent stormwater requirements as per NCAC 02B.0600. V. SUPPLEMENT AND O&M FORMS The applicable state stormwater management permit supplement and operation and maintenance(O&M)forms must be submitted for each BMP specified for this project. The latest versions of the forms can be downloaded from http://portal.ncdenr.org/web/wq/ws/su/bmp-manual. 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. A detailed application instruction sheet and BMP checklists are available from http://portal.ncdenr.org/web/wq/ws/su/statesw/forms docs. The complete application package should be submitted to the appropriate DWQ Office. (The appropriate office may be found by locating project on the interactive online map at http://portal.ncdenr.org/web/wq/ws/su/maps.) Please indicate that the following required information have been provided by initialing in the space provided for each item.All original documents MUST be signed and initialed in blue ink. Download the latest versions for each submitted application package from http://portal.ncdenr.org/web/wq/ws/su/statesw/forms docs. Initials 1. Original and one copy of the Stormwater Management Permit Application Form. '(Z 2. Original and one copy of the signed and notarized Deed Restrictions&Protective Covenants N Form. (if required as per Part VII below) 3. Original of the applicable Supplement Form(s)(sealed,signed and dated)and O&M "R G agreement(s)for each BMP. 4. Permit application processing fee of$505 payable to NCDENR. (For an Express review,refer to ALRi1tD4 Str i,J http://www.envhelp.org/pages/onestopexpress.html for information on the Express program and the associated fees. Contact the appropriate regional office Express Permit Coordinator for additional information and to schedule the required application meeting.) 5. A detailed narrative(one to two pages)describing the stormwater treatment/managementfor � the project. This is required in addition to the brief summary provided in the Project Information,item 1. 6. A USGS map identifying the site location. If the receiving stream is reported as class SA or the —TIC receiving stream drains to class SA waters within 1/2 mile of the site boundary,include the 1/2 mile radius on the map. 7. Sealed,signed and dated calculations. 8. Two sets of plans folded to 8.5"x 14" (sealed,signed,&dated),including: [LC a. Development/Project name. b. Engineer and firm. Yf c. Location map with named streets and NCSR numbers. C►1.V d. Legend. Od G 41.5\ e. North arrow. f. Scale. QC\ g. Revision number and dates. h. Identify all surface waters on the plans by delineating the normal pool elevation of a impounded structures,the banks of streams and rivers,the MHW or NHW line of tidy waters,and any coastal wetlands landward of the MHW or NHW lines. e Delineate the vegetated buffer landward from the normal pool elevation of impounded structures,the banks of streams or rivers,and the MHW(or NHW)of tidal waters. i. Dimensioned property/project boundary with bearings&distances. j. Site Layout with all BUA identified and dimensioned. k. Existing contours,proposed contours,spot elevations,finished floor elevations. 1. Details of roads,drainage features,collection systems,and stormwater control measures. m.Wetlands delineated,or a note on the plans that none exist. (Must be delineated by a qualified person. Provide documentation of qualifications and identify the person who made the determination on the plans. n. Existing drainage(including off-site),drainage easements,pipe sizes,runoff calculations. o. Drainage areas delineated(included in the main set of plans,not as a separate document). p. Vegetated buffers(where required). Form SWU-101 Version 07Jun2010 Page 4 of 6 9. Copy of any applicable soils report with the associated SHWT elevations(Please identify elevations in addition to depths)as well as a map of the boring locations with the existing elevations and boring logs.Include an 8.5"x11"copy of the NRCS County Soils map with the project area clearly delineated. For projects with infiltration BMPs,the report should also include the soil type,expected infiltration rate,and the method of determining the infiltration rate. (Infiltration Devices submitted to WiRO:Schedule a site visit for DWQ to verify the SHWT prior to submittal, (910) 796-7378.) 10. A copy of the most current property deed.Deed book:2840 Page No:393 11. For corporations and limited liability corporations(LLC):Provide documentation from the NC Secretary of State or other official documentation,which supports the titles and positions held by the persons listed in Contact Information,item la,2a,and/or 3a per NCAC 2H.1003(e).The corporation or LLC must be listed as an active corporation in good standing with the NC Secretary of State,otherwise the application will be returned. http://www.secretary.state.nc.us/Corporations/CSearch.aspx VII. DEED RESTRICTIONS AND PROTECTIVE COVENANTS For all subdivisions,outparcels,and future development,the appropriate property restrictions and protective covenants are required to be recorded prior to the sale of any lot. If lot sizes vary significantly or the proposed BUA allocations vary,a table listing each lot number,lot size,and the allowable built-upon area must be provided as an attachment to the completed and notarized deed restriction form. The appropriate deed restrictions and protective covenants forms can be downloaded from http://portal.ncdenr.org/web/wq/ws/su/statesw/forms docs.Download the latest versions for each submittal. In the instances where the applicant is different than the property owner,it is the responsibility of the property owner to sign the deed restrictions and protective covenants form while the applicant is responsible for ensuring that the deed restrictions are recorded. By the notarized signature(s)below,the permit holder(s) certify that the recorded property restrictions and protective covenants for this project,if required,shall include all the items required in the permit and listed on the forms available on the website,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 NC DWQ and that they will be recorded prior to the sale of any lot. VIII. CONSULTANT INFORMATION AND AUTHORIZATION Applicant Complete this section if you wish to designate authority to another individual and/or firm(such as a consulting engineer and/or firm)so that they may provide information on your behalf for this project(such as addressing requests for additional information). Consulting Engineer:Tom Covington,PE' Consulting Firm:NC Wildlife Resources Commission Mailing Address:1720 Mail Service Center City:Raleigh State:NC Zip:27699-1720 Phone: (919- ) 707-0154 Fax: (919 ) 707-0162 Email:tom.covington@ncwildlife.org IX. PROPERTY OWNER AUTHORIZATION (if Contact Information,item 2 has been filled out, complete this section) I, (print or type name of person listed in Contact Information,item 2a) ,certify that I own the property identified in this permit application,and thus give permission to(print or type name of person listed in Contact Information, item la) with(print or type name of organization listed in Contact Information,item la) to develop the project as currently proposed. A copy of the lease agreement or pending property sales contract has been provided with the submittal,which indicates the party responsible for the operation and maintenance of the stormwater system. I�EC EIVED OCT 142011 BY. Form SWU-101 Version 07Jun2010 Page 5 of 6 As the legal property owner I acknowledge,understand,and agree by my signature below,that if my designated agent(entity listed in Contact Information,item 1)dissolves their company and/or cancels or defaults on their lease agreement,or pending sale,responsibility for compliance with the DWQ Stormwater permit reverts back to me,the property owner.As the property owner,it is my responsibility to notify DWQ immediately and submit a completed Name/Ownership Change Form within 30 days;otherwise I will be operating a stormwater treatment facility without a valid permit. I understand that the operation of a stormwater treatment facility without a valid permit is a violation of NC General Statue 143-215.1 and may result in appropriate enforcement action including the assessment of civil penalties of up to$25,000 per day,pursuant to NCGS 143-215.6. Signature: Date: L ,a Notary Public for the State of ,County of ,do hereby certify that personally appeared before me this day of ,and acknowledge the due execution of the application for a stormwater permit. Witness my hand and official seal, SEAL reETVED My commission expires 11 OCT 14 20 X. APPLICANT'S CERTIFICATION I,(print or type name of person listed in Contact Information,item la) , certify that the information included on this permit application form is,to the best of my knowledge,correct and that the project will be constructed in conformance with the approved plans,that the required deed restrictions and protective covenants will be recorded,and that the proposed project complies with the requirements of the applicable stormwater es under 15A NCAC 2H.1000,SL 2006-246(Ph.II-Post Construction)or SL 2008-211. Signature: Date: /0////// I, fj. .. c1 . ,a Notary Public for the State of_kcjik., C fa.d County of LCAto ,do her y certify that — 1 ri)C ,L, personally appeared before me this I 114fday of O GW L& O )A.. , n I I ,and ackn ledge the due execution of the application for a stormwater permit. Witness my hand and official seal, c tiOCL 4 . 4F4iwiiiiiei$d,,,p, 1\ ;r :� 'r,. SEAL•••,. , • 177-1 7 ,.i1' 1l . .,,``' 11'?CLA7# My commission expires30, 026/( ,, V t... . 1 q�1 1 '11 OCT 12 410.16 Form SWU-101 Version 07Jun2010 Page 6 of 6 Permit No.-5147 , (to be provided by DWQ) rM'- C7 QC, STORMWATER MANAGEMENT PERMIT APPLICATION FORM0 I4CDENR 401 CERTIFICATION APPLICATION FORM INFILTRATION BASIN SUPPLEMEN'. This form must be filled out,printed and submitted. The Required Items Checklist(Part III)must be printed,filled out and submitted along with all of the required information. I. PROJECT INFORMATION Project Name Sunset Beach Boating Access Area Contact Person Torn Covington,PE Phone Number 919-707-0154 Date 6Sep-11 Drainage Area Number 1 II. DESIGN INFORMATION Site Characteristics Drainage area 57,050.00 ft2 Impervious area 34,915.00 ft2 Percent impervious 0.61 % Design rainfall depth 6.99 in Peak Flow Calculations 1-yr,24-hr rainfall depth 3.70 in 1-yr,24-hr intensity 0.16 in/hr Pre-development 1-yr,24-hr discharge 1.36 ft3/sec Post-development 1-yr,24-hr discharge 4.06 ft3/sec Pre/Post 1-yr,24-hr peak flow control 2.70 ft3/sec Storage Volume:Non-SA Waters Minimum design volume required N/A ft3 Design volume provided N/A ft3 OK for non-SA waters Storage Volume:.SA Waters 1.5"runoff volume 4284.00 ft3 Pre-development 1-yr,24-hr runoff volume 2,873.00 ft3 Post-development 1-yr,24-hr runoff volume 10,568.00 ft3 Minimum required volume 7695.00 ft3 Volume provided 8,336.00 ft3 OK Soils Report Summary Soil type fine sand granular • Infiltration rate 23.00 in/hr SHWT elevation • 10.00 fmsl Basin Design Parameters Drawdown time 0.14 days OK OC Basin side slopes 3.00 :1 OK T 1�( Basin bottom elevation 14.00 fmsl OK ZOl� Storage elevation 15.00 fmsl Storage Surface Area 9,068.00 ft2 Top elevation 15.00 fmsl Basin Bottom Dimensions Basin length 200.00 ft Basin width 40.00 ft Bottom Surface Area 7,604.00 ft2 Form SW401-Infiltration Basin-Rev.4 Parts I.&II.Design Summary,Page 1 of 2 Permit No. (to be provided by DWQ) Additional Information Maximum runoff to each inlet to the basin? N/A ac-in Maximum of 2 acre-inches allowed Length of vegetative filter for overflow N/A ft OK Distance to structure N/A ft OK Distance from surface waters N/A ft OK Distance from water supply well(s) N/A ft OK Separation from impervious soil layer N/A ft OK Naturally occuring soil above shwt 6.00 ft OK Bottom covered with 4-in of clean sand? Y (Y or N) OK Proposed drainage easement provided? N/A (Y or N) OK Capures all runoff at ultimate build-out? Y (Y or N) OK Bypass provided for larger storms? N/A (Y or N) OK Pretreatment device provided N/A • RECElVV . OCT 142011 BY: Form SW401-Infiltration Basin-Rev.4 Parts I.&II.Design Summary,Page 2 of 2 Permit No. (to be provided by DWQ) REQUIRED ITEMS CHECKLIST Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to indicate the following design requirements have been met. If the applicant has designated an agent,the agent may initial below. If a requirement has not been met,attach justification. Pagel Plan Initials Sheet No. "TtC mul)114 LC 1. Plans(1"-50'or larger)of the entire site showing: -Design at ultimate build-out, -Off-site drainage(if applicable), -Delineated drainage basins(include Rational C coefficient per basin), -Basin dimensions, -Pretreatment system, -High flow bypass system, -Maintenance access, Proposed drainage easement and public right of way(ROW), -Overflow device,and -Boundaries of drainage easement. -re over 4 2. Partial plan(1"=30'or larger)and details for the infiltration basin showing: Bypass structure, Maintenance access, Basin bottom dimensions, -Basin cross-section with benchmark for sediment deanout, -Flow distribution detail for inflow, -Vegetated filter,and -Pretreatment device. SWEET 6 3. Section view of the infiltration basin(1" 20'or larger)showing: -Pretreatment and treatment areas,and -Inlet and outlet structures. Tit CALLS 4. A table of elevations,areas,incremental volumes&accumulated volumes to verify the volume provided. - i 4 Ma—Ake 5. A soils report that is based upon an actual field investigation,soil borings,and infiltration tests. The results of the soils report must be verified in the field by DWQ,by completing&submitting the soils investigation request form. County soil maps are not an acceptable source of soils information. I`c. velar b 6. A construction sequence that shows how the infitlration basin will be protected from sediment until the entire drainage area is stabilized. lu MU 7 The supporting calculations. epa6,0 3. A copy of the signed and notarized operation and maintenance(O&M)agreement. 14- 9. A copy of the deed restrictions(if required). 1 -e�k-•;j , j.\rEJ OCT 14 2011 BY: Form SW401-Infiltration Basin-Rev.4 Page 1 of 1 Part III.Required Items Checklist,Page 1 of 1