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HomeMy WebLinkAboutSW7050701_CURRENT PERMIT_20130731STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO. SW DOC TYPE CURRENT PERMIT APPROVED PLANS ❑ HISTORICAL FILE ❑ COMPLIANCE EVALUATION INSPECTION DOC DATE YYYYMMDD V)3:R0 MCDENR North Carolina Department of Environment and Division of Water Quality Pat McCrory Thomas A. Reeder Governor- Acting Director July 31, 2013 Mr, Steve Gruninger Island Land Centre Condominium Association, Inc. PO Box 2047 Washington, NC 27989 Natural Resources John E. Skvarla, III Secretary Subject: Stormwater Permit No. SW7050701 Modification & Ownership Change Island Land Centre High Density Project Dare County Dear Mr. Gruninger: The Washington Regional Office received a complete Stormwater Management Permit Application for ownership change and modification of permit SW7050701 for Island Land Centre on June 26, 2013. Staff review of the plans and specifications has determined that the project, as proposed, will comply with the Stormwater Regulations set forth in Title 15A NCAC 2H.1000. We are forwarding Permit No. SW7050701 dated July 31, 2013, for the construction and operation of the subject project. This permit shall be effective from the date of issuance until July 31, 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 adfudicatory hearing upon written request within thirty (30) days following receipt of this permit. This request must be in the form of a written petition, conforming to Chapter 150B of the North Carolina General Statutes, and filed with the Office of Administrative Hearings, 6714 Mail Service Center, Raleigh, NC 27699-6714. Unless such demands are made this permit shall be final and binding. If you have any questions, or need additional information concerning this matter, please contact Roger Thorpe at (252) 948-3923. Sincerely, Thomas A. cc: Bissell Professional Group James G. Geraghty North Carolina Division of Water Duality 943 Washington Square Mall Washington, NC 27889 Phone: 252-946-64811 FAX: 252-946-9215 Internet www.nmatergualilv.orq Reeder Nn rthC..arnlina STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF WATER QUALITY3 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 Island Land Centre Condominium Association, Inc. . Island Land Centre Dare County FOR THE construction, operation and maintenance of three infiltration basins in compliance with the provisions of 15A NCAC 2H .1000 (hereafter referred to as the "stormwater rules') and the approved stormwater management plans and specifications and other supporting data as attached and on file with and approved by the Division of Water Quality and considered a part of this permit. This permit replaces all previous issued stormwater permits for this project and shall be effective from the date of issuance until July 31, 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 1.6 of this permit. The stormwater control has been designed to handle the runoff from 55,755 square feet of impervious area. 3. The tract will be limited to the amount of built -upon area indicated in Part I. 6. of this permit, and per approved plans. 4. All stormwater collection and treatment systems must be located in either dedicated common areas or recorded, easements. The final plats for the protect will be recorded showing all such pl required easements, in accordance with the approved ans. 5. The runoff from all built -upon area within the permitted drainage area of this project must be directed into the permitted stormwater control system. 6. The following design criteria have been provided in the infiltration basin and must be maintained at design condition: a. Site Area, acres: 2.05 Basin 1A Basin 1B Basin 2 b. Drainage Area to Basins, acres: 0.68 0.54 0�- C. Total Impervious Surfaces, ftz: 23,020 16,033 15,904. d. Design Storm, inches: 1 1 1 e. Basins Depth, feet: 1.00 1.00 1.25 f. Bottom Elevation, FMSL: 10.0 10.0 10.0 g. Bottom Surface Area, ftz: 2,430 2,084 1,286 h. Bypass Overflow Elevation, FMSL: 11.0 11.0 11.25 i. Permitted Storage Volume, ft3: 3,210 3,090 2,574 j. Type of Soil: Newhan fine sand k. Expected Infiltration Rate, in/hr: 10 10 10 I. Seasonal High Water Table, FMSL: 7.5 7.5 7.5 M. Time to Draw Down, hours: 1.60 1.79 2.41 n. Receiving Stream/River Basin: Kitty Hawk Bay / Pasquotank o. Stream Index Number: 30-18 P. Classification of Water Body: "SC" 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. Mowin.9 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. 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. 5. The facilities shall be constructed as shown on the approved plans. This permit shall become voidable unless the facilities are constructed in accordance with the conditions of this permit, the approved plans and specifications, and other supporting data. 6. Upon completion of construction, prior to issuance of a Certificate of Occupancy, and prior to operation of this permitted facility, a certification must be received from an appropriate designer for the system installed certifying that the permitted facility has been installed in accordance with this permit, the approved plans and specifications, and other supporting documentation. Any deviations from the approved plans and specifications must be noted on the Certification. A modification may be required for those deviations. 7. If the stormwater system was used as an Erosion Control device, it must be restored to design condition prior to operation as a stormwater treatment device, and prior to occupancy of the facility. 8. Access to the stormwater facilities shall be maintained via appropriate easements at all times. 9. The permittee shall submit to the Director and shall have received approval for revised plans, specifications, and calculations prior to construction, for any modification to the approved plans, including, but not limited to, those listed below: a. Any revision to any item shown on the approved plans, including the stormwater management measures, built -upon area, details, etc. b. Project name change. C. Transfer of ownership. d. Redesign or addition to the approved amount of built -upon area or to the drainage area. e. Further subdivision, acquisition, lease or sale of all or part of the project area. The project area is defined as all property owned by the permittee, for which Sedimentation and Erosion Control Plan approval or a CAMA Major permit was sought. 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. 11. A copy of the approved plans and specifications shall be maintained on file by the Permittee for a minimum of ten years from the date of the completion of construction. 12. The Director may notify the permittee when the permitted site does not meet one or more of the minimum requirements of the permit. Within the time frame specified in the notice, the permittee shall submit a written time schedule to the Director for modifying the site to meet minimum requirements. The permittee shall provide copies of revised plans and certification in writing to the Director that the changes have been made. III. GENERAL CONDITIONS This permit is not transferable except after notice. to and approval by the Director. In the event of a change of ownership, or a name change, the permittee must submit a formal permit transfer request to the Division of Water Quality, accompanied by a completed name/ownership change form, documentation from the parties involved, and other supporting materials as may be appropriate. The approval of this request will be considered on its merits and may or may not be approved. The permittee is responsible for compliance with all permit conditions until such time as the Division approves the transfer request. 2. Failure to abide by the conditions and limitations contained in this permit may subject the Permittee to enforcement action by the Division of Water Quality, in accordance with North Carolina General Statute 143-215.6A to 143-215.6C. 3. The issuance of this permit does not preclude the Permittee from complying with any and all statutes, rules, regulations, or ordinances, which may be imposed by other government agencies (local, state, and federal) having jurisdiction. 4. In the event that the facilities fail to perform satisfactorily, including the creation of nuisance conditions, the Permittee shall take immediate corrective action, including those as may be required by this Division, such as the construction of additional or replacement stormwater management systems. 5. The permittee grants DENR Staff permission to enter the property during normal business hours for the purpose of inspecting all components of the permitted stormwater management facility. 6. The permit may be modified, revoked and reissued or terminated for cause. The filing of a request for a permit modification, revocation and reissuance or termination does not stay any permit condition. 7. Unless specified elsewhere, permanent seeding requirements for the stormwater control must follow the guidelines established in the North Carolina Erosion and Sediment Control Planning and Design Manual. 8. Approved plans and specifications for this project are incorporated by reference and are enforceable parts of the permit. 9. The permittee shall notify the Division any name, ownership or mailing address changes within 30 days. 10. This permit shall be effective from the date of issuance until July 31, 2021. Application for permit renewal shall be submitted 180 days prior to the expiration date of this permit and must be accompanied by the processing fee Permit issued this the 31 st day of July, 2013. NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION Division of Wit r Quality By Authority o the Environmental Management Commission Island Land Center Stormwater Permit No. SW7050701 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: SEAL Signature Registration Number Date 6. The following design criteria have been provided in the infiltration basin and must be maintained at design condition: a. Site Area, acres: 2.05 Basin 1A Basin 1B Basin 2 b. Drainage Area to Basins, acres: 0.68 0.54 0.50 C. Total Impervious Surfaces, ftZ: 23,020 16,033 15,904 d. Design Storm, inches: 1 1 1 e. Basins Depth, feet: 1.00 1.00 . 1.25 f. Bottom Elevation, FMSL: 10.0 10.0 10.0 g. Bottom Surface Area, ftZ: 2,430 2,084 1,286 h. Bypass Overflow Elevation, FMSL: 11.0 11.0 11.25 i. Permitted Storage Volume, ft3: 3,210 3,090 2,574 j. Type of Soil: Newhan fine sand k. Expected Infiltration Rate, in/hr: 10 10 10 I. Seasonal High Water Table, FMSL: 7.5 7.5 7.5 M. Time to Draw Down, hours: 1.60 1.79 2.41 n. Receiving Stream/River Basin: Kitty Hawk Bay / Pasquotank o. Stream Index Number: 30-18 p. Classification of Water Body: "SC" 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. State Stormwater Management Systems RECEIVE® J U N 2 6 2013 Designer's Certification I, �Wlb VYAo as a duly registered __%F's_r-6l0/.►A L- tEN1,w5iZ in the State of North Carolina, having been authorized to observe (periodically/ weekly/ full time) the construction of the project, (Project) for �E-A&mAesI u-G (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: A -FsWAAm.rr V56eTATIVB ICp\lE=m ff A-5. AvoT' f�599&J ruuy E6rAt5LIt*4r=76 (5A6'^I-5, t1'�-BSVJ -t bwe,G Leo) Registratio Number_ Date 9tL- SEAL \�\Nt u u llllil \\\\, k C AR p( �` Q;• �a sS 6oF@ %y'9, ;a SEAL 9r', • 030406 - i IM /i i t\0 P\\\ Page 6 of 7 State Stormwater Management Systems Permit No. SW7050613 Certification Requirements: /1. The drainage area to the system contains approximately the permitted acreage. Z2. The drainage area to the system contains no more than the permitted amount of built -upon area. Z3 v/ 4. NIA 5. N A 6. (SEr NOTE g, c2fi DFVD4Tio *) ✓ 9. ✓ 10. All the built -upon area associated with the project is graded such that the runoff drains to the system. All roof drains are located such that the runoff is directed into the system. The bypass structure weir elevation is per the approved plan. The bypass structure is located per the approved plans. A Trash Rack is provided on the bypass structure. All slopes are grassed with permanent vegetation. Vegetated slopes are no steeper than 3:1. The inlets are located per the approved plans and do not cause short- circuiting of the system. The permitted amounts of surface area and/or volume have been provided. 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 Washington Regional Office Dare County Building Inspections ' Page 7 of 7 0 State of North Carolina Department of Environment and Natural Resources Division of Water Quality RECEIVED STATE STORMWATER PERMIT NAME/OWNERSHIP CHANGE FORM JUN 2 6 2013 I. CURRENT PERMIT INFORMATION 1. Stormwater Manaqement Permit Number: aW705070 I D V Q-1! ARO 2. Project Name: T5cAND LAND (35VM= 3: Current Permit Holder's Company Name/Organization: SL5A 6POA5iS , LLL 4: Signing Official's Name: 75&mg-5 GL-2yGH71/ Title: NiAIA�,L& 1' V7iv6-?Z 5. Mailing Address: -Po- '3ipx iCpco City: KrT`ry ,-/AVV< Stater Zip: c97FL/1c 6. Phone: (7.S-2-) a o�;Z - I (per Fax:( ) II. PROPOSED PERMITTEE / OWNER / PROJECT / ADDRESS INFORMATION This request is for: (please check all that apply) ❑ Name change of the owner (Please complete Items 1, 2 and 3 below) ❑ Name change of project (Please complete Item 5 below) ® Change in ownership of the property/company (Please complete Items 1, 2, 3, and 4 below) ❑ Mailing address / phone number change. (Please complete Item 4 below) ❑Other (please explain): 1.'Proposed permittee's company name/organization: ss4 V0L4$-oC+EA-ra Cou�bmnnuM Ad�rr 19MlAt . 2. Proposed permittee's signing official's name: 5'TwG ( VP. V0V- Fi2sTSny77-/&AVk 3. Proposed permittee's title: Mo"Acg,�rZ 4. Mailing Address: 'PC). iZo�c aoy 7 City: WAStdJN/'-�ToAy State: NL Zip: a78001 Phone: (ZS ) qY0 Fax: (Zsa) qy(o-3873 5. New Project Name to be placed on permit: Please check the appropriate box. The proposed permittee listed above is: CR HOA or POA (Attach documentation showing that the HOA or POA owns, controls, or has a recorded easement for all areas that contain stormwater system features. Print name of HOA or POA in #1 above and provide name of HOA/POA's authorized representative in #2 above) ❑ The property owner ❑ Lessee (Attach a copy of the lease agreement and complete Property Owner Information on page 4) ❑ Purchaser (Attach a copy of the pending sales agreement. Final approval of this transfer will be granted upon receipt of a copy of the recorded deed) ❑ Developer (Complete Property Owner Information on page 4) SSW N/O Change Rev24Sept2012 Page 1 of 4 x III. REQUIRED ITEMS A request to transfer a permit will not be approved by the Division of Water Quality (DWQ) unless all of the applicable required items listed below are included with the submittal. Failure to provide the listed items may result in processing delays or denial of the transfer. 1. This completed and signed form. This certification must be completed an`d signed bq both the current -permit holdei: and the new applicant if this is -a change of ownership. 2. Legal documentation of the property transfer to a new owner. 3. A copy of any recorded deed restrictions, covenants, or easements, if required by the permit. 4. The designer's certification (DWQ Engineer and Designer Certification Forms are available from .each DWQ Regional office), if required by the permit and if not already submitted to DWQ. 5. If the proposed permittee is a firm, partnership, association, institution, corporation, limited liability company, or other corporate entity, provide documentation showing the authority of the named representative to act on behalf of the proposed permittee. 6. The $40.00 processing fee. If this is an initial transfer from the original permittee the processing fee is not required. Subsequent ownership transfers will require the $40.00 processing fee. IV: CURRENT PERMITTEE'S CERTIFICATION Please check one of the following statements and fill out the certification below that statement: ❑ Check here if the current permittee is only changing his/her/its name, the project name, or mailing address, but will retain the permit. I, , the current permittee, hereby notify the DWQ that I am changing my name and/or I am changing my mailing address and/or I am changing the name of the permitted project. I further attest that this application for a name/ownership change is accurate and complete to the best of my knowledge. I understand that if all required parts of this application are not completed or if all required supporting information and attachments listed above are not included, this application package will be returned as incomplete. X Check here if current permittee is transferring the property to a new owner and will not retain ownership of the permit I, �gw,eS yv�, �,c;4 SC, b the current permittee, am submitting this application fora transfer of ownership for permit # SW 7v 50 7o / . I hereby notify DWQ of the sale or other legal transfer of the stormwater system associated with this permit. I have provided a copy of the most recent permit, the designer's certification for each BMP, any recorded deed restrictions, covenants, or easements, the DWQ approved plans and/or approved as -built plans, the approved operation and maintenance agreement, past maintenance records, and the most recent DWQ stormwater inspection report to the proposed permittee named in Sections II and V of this form. I further attest that this application for a name/ownership change is accurate and complete to the best of, my knowledge. I understand that if all required parts of this application are not completed or if all required supporting information and attachments listed above are not included, this application package will be returned as incomplete. I assign all rights and obligations as permittee to the proposed permittee named in Sections II and V of this form. I understand that this transfer of ownership cannot be approved by the DWQ unless and until the facility is in compliance with the re: G- b4-)-k Notary Public for the State of �3ot`E'In l G mac` , County of ID oi.2e , do hereby certify that �O-M45 1A. 62/1ct e ,C� personally appeared before me this the j day of 20 13 , and acknowledge the due execution of the forgoing instrument. Witness my hand and official seal, MARY E. YORK Notary Signatu ;NOTARY PUBLIC ' �fta County, North Carolina SSW N/O Change Rev24Sept2012 Page 2 of 4 V. PROPOSED PERMITTEE CERTIFICATION: (This section must be completed by the Proposed Permittee for all transfers of ownership) I, ST6VE 610uni/A/6ar=lZ , hereby notify the DWQ that I have acquired through sale, lease or legal transfer, the responsibility for operating and maintaining the permitted stormwater management system, and, if applicable, constructing the permitted system. I acknowledge and attest that I have received a copy of: (check all that apply to this permit) [� the most recent permit the designer's certification for each BMP ['r any recorded deed restrictions, covenants, or easements [the DWQ approved plans and/or approved as -built plans []'the approved operation and maintenance agreement Bpast maintenance records from the previous permittee (where required) DWQ stormwater inspection report showing compliance within 90 days prior to this transfer I have reviewed the permit, approved plans and other documents listed above, and I will comply with the terms and conditions of the permit and approved plans. I acknowledge and agree that I will operate and maintain the system pursuant to the requirements listed in the permit and in the operation and maintenance agreement. I further attest that this application for a name/ownership change is accurate and complete to the best of my knowledge. I understand that if all required parts of this application are not completed or if all required supporting information and attachments listed above are not included, this applicati n package will be returned as incomplete. Signature: Date: !o'Z6-13 / ,I1 a Notary Public for the State of County of do hereby certify that rjc ✓c-- Gn V /,V 1 ✓ yfr personally appeared before me this the cL4 day of 20 l3 , and acknowlgdgeAhe_due execution of the forgoing instrument. Witness my hand and official seal, .•`'`LoA J. pl`Yj�Pj, 0 //1' • Notary Signature Ifllp 11100 Additional copies of the original permit and the approved Operation and Mainterfdnmagreement can be obtained from the appropriate Regional Office of the Division of Water Quality. This completed form, including all supporting documents and processing fee (if required), should be sent to the appropriate Regional Office of the North Carolina Department of Environment and Natural Resources, Division of Water Quality, as shown on the attached map. Please note that if the Proposed Permittee listed above is not the property owner, the property owner must complete and sign page 4 of this document. Both the lessee / developer and the property owner will appear on the permit as permittees. SSW N/O Change Rev24Sept2012 Page 3 of 4 VI. PROPERTY OWNER CONTACT INFORMATION AND CERTIFICATION If the Proposed Permittee listed in Sections If and V of this form is not the Property Owner, the Property Owner must provide his/her Contact Information below and sign this form: Printed Name: Organization: Title within the Organization: Street Address: City: Mailing Address: City: Phone: I rM1 1 State: (if different from street address) State: Fax: Zip: a I certify that I own the property identified in this permit transfer document and have given permission to the Proposed Permittee listed in Sections II and V to develop and/or, lease the property. A copy of the lease agreement or other contract, which indicates the party responsible for the construction and/or operation and maintenance of the stormwater system, has been provided with the submittal. As the legal property owner I acknowledge, understand, and agree by my signature below, that I will appear as a permittee along with the lessee/developer and I will therefore share responsibility for compliance with the DWQ Stormwater permit. As the property owner, it is my responsibility to notify DWQ by submitting a completed Name/Ownership Change Form within 30 days of procuring a developer, lessee or purchaser for the property. I understand that failure to operate and maintain the stormwater treatment facility in accordance with the permit is a violation of NC General Statute (NCGS) 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 of the property owner County of Date: a Notary Public for the State of do hereby certify that personally appeared before me this the day of , 20, and acknowledge the due execution of the forgoing instrument. Witness my hand and official seal, (Notary Seal) Notary Signature SSW N/O Change Rev24Sept2012 Page 4 of 4 C DWQ USE ONLY Date Received Fee Paid Permit Number s 5 W Applicable Rules: ❑ Coastal SW -1995 Coastal SW - 2008 ❑ Ph II - Post Construction (select all that apply) ❑ Non -Coastal SW- HQW/ORW Waters ❑ Universal Stormwater Management Plan ❑ Other WQ M mt Plan: S State of North Carolina Department of Environment and Natural Resources RECEIVED Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORWN 2 6 2013 This form may be photocopied for use as an original 1. GENERAL INFORMATION �/� 1. Project Name (subdivision, facility, or establishment name -should be consistent withl? jecf nam- onplaivs,'R® specifications, letters, operation and maintenance agreements, etc.): Island Land Centre 2. Location of Project (street address): 3210 N Croatan Highway City: Kill Devil Hills County: Dare Zip: 27948 3. Directions to project (from nearest major intersection): Located in the southwest corner of the intersection of N. Croatan Hwy (US HWY 158) and West Arch Street 4. Latitude:36° 03' 06" N Longitude:75° 41' 05" W of the main entrance to the project. 11. PERMIT INFORMATION: 1. a. Specify whether project is (check one): ❑New ®Modification ❑ Renewal w/ Modificationt tRenetoals with modifications also requires SWU-702 - Reneu,al Application Fonn b.If this application is being submitted as the result of a modification to an existing permit, list the existing permit number SW7050701 , its issue date (if known) 7-26-2005 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 ®High 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, and the previous name of the project, if different than currently proposed, 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): ❑CAMA Major ❑NPDES Industrial Stormwater ®Sedimentation/Erosion Control: 2.0 ac of Disturbed Area ❑404/401 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:Erosion and Sediment Control Plan No. Dare-2005-020, Dated 4-5-2005 5. Is the project located within 5 miles of a public airport? ❑No ®Yes If yes, see S.L. 2072-200, Part Vl: http://12ortal.ncdenr.org/web/wq/ws/su/­statesw/­rules laws Form SWU-101 Version 06Aug2012 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: Island Land Centre Condominium Associaton, Inc Signing Official & Title: Steve Gruninger, Vice President for First South Bank, Member Manager b.Contact information for person listed in item I above: Street Address: 1311 Carolina Ave. City: Washington State: NC Zip: 27889 Mailing Address (if applicable): P.O. Box 2047 City: Washington State: NC Zip: 27889 Phone: ( 252 ) 940-4926 Fax: (252 ) 946-3873 Email: Steve.Gruninger@firstsouthnc.com 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/1 Signing Official & b.Contact information for person listed in item 2a above: Street Address: Mailing Address (if 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: Signing Official & b. Contact information for person listed in item 3a above: Mailing Address: City: State: Zip: Phone: ( ) Fax: ( ) 4. Local jurisdiction for building permits: The Town of Kill Devil Hills Planning and Inspections Department Point of Contact: Matt Lowcher Phone H: ( 252 ) 449-5312 Form SWU-101 Version 06Aug2012 Page 2 of 6 IV. PROJECT INFORMATION 1. In the space provided below, briefly summarize how the stormwater runoff will be treated. Stormwater runoff from the developmental activities drain to (3) dry infiltration basins located along the boundary of the development. Treatment is provided within the infiltration basins that are designed to provide greater than two times the required storage capacity. 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 Pasquotank River basin. 4. Total Property Area: 2.05 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': 2.05 acres Total project area shall be calculated to exclude thefollowing: the normal pool of imppounded structures, the area between the banks of streams and rivers, the area below the Normal High Water (NHW) line or Mean High Water (MHW) line, and coastal wetlands landward fron the NHW (or MHW) line. The resultant project area is used to calculate overall percent built upon area (BUA). Not -coastal wetlands landward of the NHW (or MHW) line may be included in the total project area. 8. Project percent of impervious area: (Total Impervious Area / Total Project Area) X 100 = 62.3 % 9. How many drainage areas does the project have? 4 (For high densihj, count I for each proposed engineered stormwater BMP. For low densihij and other projects, use 1 for the whole properhj 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 2 Drainage Area 3 Drainage Area 4 Receiving Stream Name Kitty Hawk Bay Kitty Hawk Bay Kitty Hawk Bay Kitty Hawk Bay Stream Class * SC SC SC SC Stream Index Number * 30-19 30-19 30-19 30-19 Total Drainage Area (so 52,990 21,650 798 14,049 On -site Drainage Area (sf) 52,990 21,650 798 14,049 Off -site Drainage Area (sf) 1 0 0 1 0 1 0 Proposed Impervious Area** (so 39,053 15,904 798 0 % Impervious Area** total 73.7% 73.5% 100% 0% Impervious" Surface Area DrainageAreal DrainageAreaZ DrainageAreaa Drains Area 4 On -site Buildings/Lots (so 6,760 3,812 0 0 On -site Streets (so 0 0 0 0 On -site Parking (so 32,073 9,939 798 0 On -site Sidewalks (so 220 2,153 0 0 Other on -site (so 0 0 0 0 Future (so 0 0 1 0 1 0 Off -site (so 0 0 0 0 Existing BUA*** (so 0 0 0 0 Total (so: 39,053 15,904 798 0 * Stream Class and Index Number can be determined at: littp.aortal.?icdetir.orgLweblwqlpslcsiilclassificatioiis * Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas, sidewalks, gravel areas, etc. Report only that amount of existing BUA that will remain after development. Do not report any existing BUA that is to be removed and which will be replaced by new BUA. Form SWU-101 Version 06Aug2012 Page 3 of 6 11, How was the off -site impervious area listed above determined? Provide documentation. Projects in Union County: Contact DWQ Central Office staff to check if the project is located within a Threatened & Endangered Species watershed that maybe subject to more stringent stormwater requirements as per 15A 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. 11 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 hn://portal.ncdenr.org/web/wq/ws/su/statesw/forms does. 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 does. 1. Original and one copy of the Stormwater Management Permit Application Form. 2. Original and one copy of the signed and notarized Deed Restrictions & Protective Covenants Form. (if required as per Part VII below) 3. Original of the applicable Supplement Form(s) (sealed, signed and dated) and O&M agreement(s) for each BMP. 4. Permit application processing fee of $505 payable to NCDENR. (For an Express review, refer to http://www.envhelp.oriz/pages/onestol2express.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 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 (one copy). 8. Two sets of plans folded to 8.5" x 14" (sealed, signed, & dated), including: a. Development/Project name. b. Engineer and firm. c. Location map with named streets and NCSR numbers. d. Legend. e. North arrow. I. Scale. g. Revision number and dates. h. Identify all surface waters on the plans by delineating the normal pool elevation of impounded structures, the banks of streams and rivers, the MHW or NHW line of tidal waters, and any coastal wetlands landward of the MHW or NHW lines. • 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). �DMIL b�AA yc 'DMfC Form S WU-101 Version 06Aug2012 Page 4 of 6 9. Copy of any applicable soils report with the associated SHWT elevations (Please identify DM 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"xll" 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 verifij the SHWT prior to submittal, (910) 796-7378.) 10. A copy of the most current property deed. Deed book: 1726 Page No: 476 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 15A NCAC 21-1.1003(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 does. 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: Mark S. Bissell, P.E. Consulting Firm: Bissell Professional Group Mailing Address: P.O. Box 1068 City: Kitty Hawk State: NC Zip: 27949 Phone: ( 252 ) 261-3266 Email:—mark@bissellprofessionalaoup.com Fax: (252 ) 261-1760 IX. PROPERTY OWNER AUTHORIZATION (if Contact Information, item 2 has been fulled out, complete this section) I, (print or hjpe 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 hjpe name of person listed in Contact Information, item la) with (print or hjpe narne 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. Form SWU-101 Version 06Aug2012 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. a Notary Public for the State of , County of do hereby certify that before me this _ day of personally appeared . and acknowledge the due execution of the application for a stormwater permit. Witness my hand and official seal, SEAL My commission X. APPLICANT'S CERTIFICATION 1, (print or type nnnie of person listed in Contact Information, item ]a) Steve Gnmin,ger 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 rules under 5A NCAC 21-I .1000 and any other applicable state stormwater requirements. w--4-k 6'. �Cou of personally appeared before me this o-� day of 1 / ✓ r L 0/3 and acknowledge the due execution of the application for a stormwater petm4rl . p ttt�sss my hand and official seal, 0 '-r.� I/ f A4. .c .�� kiE�i 1 s+71-V a �Jaf SEAL My commission expires ` '0' Form SWU-101 Version 06Aug2012 Page 6 of 6 Permit No. to be provided y State of North Carolina Department of Environment and Natural Resources Division of Water Quality RECEIVED STORMWATER MANAGEMENT PERMIT APPLICATION FORM INFILTRATION BASIN SUPPLEMENT This form may he photocopied for use as an original JUN 2 6 2013 DWO Stormwater Manasement Plan Review: ®0/,/�` ji��o A complete stormwater management plan submittal includes a stormwater management permit ap ati n, infiltration basin supplement for each system, design calculations, soils report and plans and specifications showing all stormwater conveyances and system details. L PROJECT INFORMATION Project Name : Island Land Centre Contact Person: Michael C. Casey, Condo Assoc. Registered Agent Phone Number: (252) 4414125 This worksheet applies to: Basin No. lA in Drainage Area 1 (as identified on plans) (from Form SWU-101) II. DESIGN INFORMATION Attach supporting calculations/documentation. The soils report must be based upon an actual field investigation and soil borings. County soil maps are not an acceptable source of soils information. All elevations shall be in feet mean sea level (fmsl). Soils Report Summary Soil Type Newhan fine sand Infiltration Rate 1011+ SHWT Elevation 7.5' Basin Design Parameters Design Storm 1.0 Design Volume Drawdown Time 1.6 Basin Dimensions Basin Size in/hr or cf/hr/sf (circle appropriate units) f nsl (Seasonal Nigh Water Table elevation) inch (1.5 inch event far SA waters, I inch event for others) c.f. hrs ft. x Basin Volume Provided 3,210.0 c.f. Basin Elevations Bottom Elevation 10.0 fmsl Storage Elevation Top Elevation Form SWU-103 Rev.3.99 10.58 11.0 fmsl fmsl (irregular geometry see attached plan) sq. ft. (bottom dimensions) Top of Basin Area: 3,990 s.f. Bottom of Basin Area: 2,430 s.f. Page[ of 3 III. REQUIRED ITEMS CHECKLIST The following checklist outlines design requirements per the Stormwater Best Management Practices Mani (N.C. Department of Environment, Health and Natural Resources, February 1999) and Administrative Co Section: 15 A NCAC 2H .1008. Initial in the space provided to indicate .that the following design requirements have been met and supportii documentation is attached. If the applicant has designated an agent in. the Stormwater Management Pern Application Form, the agent may initial below. Attach justification if a requirement has not been met. Applicants Initials DM IL a. System is located 50 feet from class SA waters and 30 feet from other surface waters. b. System is located at least 100 feet from water supply wells. c. Bottom of system is at least 2 feet above the seasonal high water table. DM IL d. Bottom of the system is 3 feet above any bedrock or impervious soil horizon. �M IC e. System is not sited on or in fill material or DWQ approval has been obtained. f. System is located in a recorded drainage easement for the purposes of operation and maintenance and has recorded access easements to the nearest public right-of-way. -�� g. Drainage area for the device is less than 5 acres.Gr o.rov 4,7-" QATitJ v bM IL h. Soils have a minimum hydraulic conductivity of 0.52 in ches per hour and soils report is attached. i. System captures and infiltrates the runoff from the fast 1.0'inch of rainfall (1.5 inch evens for'areas draining to SA waters ). Design volume. and infiltration calculations attached. DM IL j. System is sized to take into account the runoff at the ultimate built -out potential from all surfaces draining to the system, including any off -site drainage. Calculations attached. i7M V k. All side, slopes stabilized with vegetated cover are no steeper than 3:1 (H:V). ` IL 1. A pretreatment device such as a catch basin, grease trap, filter strip, grassed Swale or sediment tiap is provided. <7M in. Bottom of the device is covered with a layer of clean sand to an average depth of 4 inches RNn o St:eA(9c or dense vegetative cover is provided. ��s. ( f zo n. Vegetated filter is provided for overflow and detail is shown on plans (Required minimun "9,u 1T5 length is. 50 feet for SA waters, 30 feet for other waters). t i7M o. Flow distribution mechanism within the basin is provided. �� lL p. A benchmark is provided to determine the sediment accumulation in the pretreatment device. • nu q. Runoff in excess of the design volume bypasses off-line systems (bypass detail provided). r. System is designed to draw down the design storage volume to the proposed bottom elevation under seasonal high water conditions within five days. A soils report and all pertinent draw -down calculations are attached. t AIL s. Plans ensure that the installed system will meet design specifications (constructed or restored) upon initial operation once the project is complete and the entire drainage area is stabilized. Form SWU-103 Rev 3.99 Page 2 of 3 Permit No. to be provided y DWT- State of North Carolina Department of Environment and Natural Resources Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM INFILTRATION BASIN SUPPLEMENT This form may be photocopied for use as an original DWO Stormwater Manasement Plan Review: A complete stormwater management plan submittal includes a stormwater management permit application, an infiltration basin supplement for each system, design calculations, soils report and plans and specifications showing all stormwater conveyances and system details. L PROJECT INFORMATION Project Name : Island Land Centre Contact Person: Michael C. Casey, Condo Assoc. Registered Agent Phone Number: (252) 4414125 This worksheet applies to: Basin No. 1 B (as identified on plans) in Drainage Area 1 (from Form SWU-101) 11. DESIGN INFORMATION Attach supporting calculations/documentation. The soils report must be based upon an actual field investigation and soil borings. County soil maps are not an acceptable source of soils information. All elevations shall be in feet mean sea level (fmsl). Soils Report Summary Soil Type Newhan fine sand Infiltration Rate 1011+ SHWT Elevation 7.5' in/hr or cf/hr/sf (circle appropriate units) fmsl (Seasonal High Water Table elevation) Basin Design Parameters Design Storm 1.0 inch (1.5 inch event for SA waters, I inch event for others) Design Volume 1,300 c.f. Drawdown Time 1.79 hrs Basin Dimensions Basin Size (irregular geometry see attached plan) ft. x it. = sq. ft. (bottom dimensions) Basin Volume Provided 3,090.0 c.f. Basin Elevations Bottom Elevation Storage Elevation Top Elevation 10.0 fmsl 10.42 fmsl 11.0 frisl Top of Basin Area: 4,095 s.f. Bottom of Basin Area: 2,084 s.f. III. REQUIRED ITEMS CHECKLIST The following checklist outlines design requirements per the Stormwater Best Management Practices Mar,. (N.C. Department of Environment, Health and Natural Resources, February 1999) and Administrative G Section: 15 A NCAC 2H .1008. Initial in the space provided to indicate that the following design requirements have been met and support documentation is attached. If the applicant has designated an agent in. the Stormwater Management Per. Application Form, the agent may initial below. Attach justification if a requirement has not been met. Applicants Initials DM IC a• L��11L b. C. System is located 50 feet from class SA System is not sited on or in fill material or DWQ approval has been obtained. System is located in a recorded drainage easement for the purposes of operation and maintenance and has recorded access easements to the nearest public right-of-way. Drainage area for the device is less than 5 acres. awwpv a cA24T Soils have a minimum hydraulic conductivity of 0.52 inches per hour and soils report is attached. System captures and infiltrates the runoff from the fast 1.0'inch of rainfall (I inch ever foi area§ draining to SA waters ). Design volume. and infiltration calculations attached. System is sized to take into account the runoff at the ultimate built -out potential from all surfaces draining to the system, including any off -site drainage. Calculations attached'. All side, slopes stabilized with vegetated cover are no steeper than 3:1 (H:V). A pretreatment device such as a catch basin, grease trap, filter strip, grassed Swale or sediment trap is provided. c�>�M,,•L M. N v �tts6= �S. ,6. n. c0mQ' &-0 w/8wv JA bM K o. waters and 30 feet from other surface waters. System is located at least 100 feet from water supply wells. Bottom of system is at least 2 feet above the seasonal high water table. d. Bottom of the system is 3 feet above any bedrock or impervious soil horizon. K e. g• t>m IL h. ' — t>A r. . i �M IL j- 1:�M K k. DM C P. N/A Sac I neLLL- q. Z� IL r. Bottom of the device is covered with a layer of clean sand to an average depth of 4 inche or dense vegetative cover is provided. Vegetated filter is provided for overflow and detail is shown on plans (Required minimur length is. 50 feet for SA waters, 30 feet for other waters). � Flow distribution mechanism within the basin is provided. A benchmark is provided to determine the sediment accumulation in the pretreatment device. Runoff in excess of the design volume bypasses off-line systems (bypass detail provided) System is designed to draw down the design storage volume to the proposed bottom elevation under seasonal high water conditions within five days. A soils report and all pertinent draw -down calculations are attached. iJ/11L s. Plans ensure that the installed system will meet design specifications (constructed or restored) upon initial operation once the project is complete and the entire drainage area i stabilized. Form SWU-103 Rev 3.99 Page 2 of 3 Permit No. to be provided y DWO State of North Carolina Department of Environment and Natural Resources Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM INFILTRATION BASIN SUPPLEMENT This form may be photocopied for use as an original DWO Stormwater Management Plan Review: A complete stormwater management plan submittal includes a stormwater management permit application, an infiltration basin supplement for each system, design calculations, soils report and plans and specifications showing all stormwater conveyances and system details. I. PROJECT INFORMATION Project Name : Island Land Centre Contact Person: Michael C. Casey, Condo Assoc. Registered Agent Phone Number: (252) 441-4125 This worksheet applies to: Basin No. 2 in Drainage Area 2 (as identified on plans) (from Form SWU-101) 11. DESIGN INFORMATION Attach supporting calculations/documentation. The soils report must be based upon an actual field investigation and soil borings. County soil maps are not an acceptable source of soils information. All elevations shall be in feet mean sea level (fmsl). Soils Report Summary Soil Type Newhan fine sand Infiltration Rate 1011+ SHWT Elevation 7.5' in/fir or cf/hr/sf (circle appropriate units) fmsl (Seasonal High Water Table elevation) Basin Design Parameters Design Storm 1.0 inch (1.5 inch eventforSA waters, l inch eventforothers) Design Volume 1,283 c.f. Drawdown Time 2.41 his Basin Dimensions Basin Size ft. x_ Basin Volume Provided 2,574.0 c.f. Basin Elevations Bottom Elevation 10.0 fmsl Storage Elevation 10.62 fmsl Top Elevation 11.25 fmsl (irregular geometry see attached plan) ft. = sq. R. (bottom dimensions) Top of Basin Area: 2,833 s.f. Bottom of Basin Area: 1,286 s.f. III. REQUIRED ITEMS CHECKLIST The following checklist outlines design requirements per the Stormwater Best Management Practices Mar. (N.C. Department of Environment, Health and Natural Resources, February 1999) and Administrative C, Section: 15 A NCAC 2H .1008. Initial in the space provided to indicate that the following design requirements have been met and support documentation is attached. If the applicant has designated an agent in the Stormwater Management Per, Application Form, the agent may initial below. Attach justification if a requirement has not been met. Applicants Initials DM IL a. System is located 50 feet from class SA waters and 30 feet from other surface waters. b. System is located at least 100 feet from water supply wells. IC c. Bottom of system is at least 2 feet above the seasonal high water table. d. Bottom of the system is 3 feet above any bedrock or impervious soil horizon. �M K e. System is not sited on or in fill material or DWQ approval has been obtained. f. System is located in a recorded drainage easement for the purposes of operation and maintenance and has recorded access easements to the nearest public right-of-way. g. Drainage area for the device is less than 5 acres.'ccM,t-T<d,t/ �M h. Soils have a minimum hydraulic conductivity of attached. 0.52 inches per hour and soils report is i. System captures and infiltrates the runoff from the first 1.0'inch of rainfall 0.5 inch ever forareas draining to SA waters ). Design volume. and infiltration calculations attached. �M IL j. System is sized to take into account the runoff at the ultimate built -out potential from all surfaces draining to the system, including any off -site drainage. Calculations attached'. _ k. All side slopes stabilized with vegetated cover are no steeper than 3:1 (H:V). ` 1. A pretreatment device such as a catch basin, grease trap, filter strip, grassed swale or sediment trap is provided. pM m. Bottom of the device is covered with a layer of clean sand to an average depth of 4 inche N JfnL or dense vegetative cover is provided. �JiiO �S. n. Vegetated filter is provided for overflow and detail is shown on plans (Required minimur length is 50 feet for SA waters, 30 feet for other waters). bMC o. Flow distribution mechanism within the basin is provided. DM ►L P. N//{ Sac te ns3xt- q. A benchmark is provided to determine the sediment accumulation in the pretreatment device. Runoff in excess of the design volume bypasses off-line systems (bypass detail provided) System is designed to draw down the design storage volume to the proposed bottom elevation under seasonal high water conditions within five days. A soils report and all pertinent draw -down calculations are attached. iJ/ 11L s. Plans ensure that the installed system will meet design specifications (constructed or restored) upon initial operation once the project is complete and the entire drainage area i stabilized. 'Form SWU-103 Rev 3.99 Page 2 of 3 RECEIVE® JUN .2 6 2013 Permit Number: (to be provided by DWQ) Drainage Area Number: " Infiltration Ba'siiin O-jaAfaq A YP&ntenance 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: Potentialproblem: How I will remediate theproblem: 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. Form SW401-Infiltration Basin O&M-Rev.3 Page 1 of 3 BMP element: The forebay The main treatment area The embankment The outlet device Potential problem: Sediment has accumulated and reduced the depth to 75% of the original design depth. Erosion has occurred or riprap is displaced. Weeds are present. A visible layer of sediment has accumulated. Water is standing more thi 5 days after a storm event. Weeds and noxious plants are growing in the main treatment area. Shrubs or trees have started to grow on the embankment. An annual inspection by an appropriate professional shows that the embankment needs reoair. Clogging has occurred How I will remediate the problem: Search for the source of the 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. Provide additional erosion protection such as reinforced turf matting or riprap if needed to prevent future erosion problems. Remove the weeds, preferably by hand. If pesticides are used, wipe them on the plants rather than Search for the source of the 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 Replace the top few inches of filter 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. Remove the plants by hand or by wiping them with pesticide (do not Remove shrubs or trees Make all needed repairs. 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. 733-1786. Form SW401-Infiltration Basin O&M-Rev.3 Page 2 of 3 Permit Number: (to be provided by DWQ) 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: Island Land Centre BMP drainage area number: Print name: Steve Gruninger, Vice President for First South Bank Title: Member Manager Address: P.O. Box 2047, Washington, NC 27889 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. 1, M aA.,- � , a Notary Public for the State of &AAA 6kn ltrL County of Bet„ A..L ! , do hereby certify that ✓ e— G A,-�,v personally appeared before me this ::�6 day of tr✓ ,x_ %'�/3, and acknowledge the due execution of the forgoing infiltration basin maintenance requirements. Witness my hand and official seal, ttot 40000o0I 00 4 q Np j� a••° lot SEAL My commission expires // �✓ �Di �/y Form SW401-Infiltration Basin O&M-Rev.3 Page 3 of 3 Permit Number: (to be provided by DWQ) Drainage Area Number: Q 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: Potentialproblem: How I will remediate theproblem: 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. Form SW401-Infiltration Basin O&M-Rev.3 Page 1 of 3 BMP element: treatment area The embankment The outlet device The receiving water Sediment has accumulated and reduced the depth to 75% of the original design depth. Erosion has occurred or riprap is displaced. Weeds are present. A visible layer of has accumulated. Water is standing more than 5 days after a storm event. Weeds and noxious plants are growing in the main treatment area. Shrubs or trees have started to grow on the embankment. An annual inspection by an appropriate professional shows that the embankment needs repair. Clogging has occurred The outlet device is damaged Erosion or other signs of damage have occurred at the outlet. How I will remediate the problem: Search for the source of the 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. Provide additional erosion protection such as reinforced turf matting or riprap if needed to prevent future erosion problems. Remove the weeds, preferably by hand. If pesticides are used, wipe them on the plants rather than Search for the source of the 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 Replace the top few inches of filter 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. Remove the plants by hand or by wiping them with pesticide (do not Remove shrubs or trees Make all needed repairs. Clean out the outlet device. Dispose of the sediment off -site. Repair or replace the outlet device. Contact the NC Division of Water Quality 401 Oversight Unit at 919- 733-1786. Form SW401-Infiltration Basin O&M-Rev.3 Page 2 of 3 Permit Number: (to be provided by DWQ) 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: Island Land Centre BMP drainage area number: Print name: Steve Gruninger, Vice President for First South Bank Title: Member Manager Address: P.O. Box 2047, Washington, NC 27889 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. 1, J a Notary Public for the State of /✓i, nt �i.. 1 J� County of J6 e4t--J 140- . , do hereby certify that j9-�o Al I,- f G*_ personally appeared before me this day of;T,,$.-<— , "/ 3 , and acknowledge the due execution of the forgoing infiltration basin maintenance requirements. Witness my hand and official seal, • Ye�e44 nneeee•`ee . SEAL My commission expires lk �P✓ 3v, ;ze)l1 Form SW401-Infiltration Basin O&M-Rev.3 Page 3 of 3 ������� Permit No. S W 0 tl to beprovided by State of North Carolina JUL 0 12005 Department of Environment and Natural Resources ((�� 11An1'pppp((�� Division of Water Quality DWY�S�b,YiNi'bVATER MANAGEMENT PERMIT APPLICATION FORM INFILTRATION BASIN SUPPLEMENT This form may be photocopied for use as an original DWO Stormwater Management Plan Review: A complete stormwater management plan submittal includes a stormwater management permit application, an infiltration basin supplement for each system, design calculations, soils report and plans and specifications showing all stormwater conveyances and system details. I. PROJECT INFORMATION Project Name : Island Land Center Contact Person: Jim Geraghty Phone Number: 1252 261-4010 This worksheet applies to: Basin No. 1 (as identified on plans) in Drainage Area 1 (from Form SWU-101) II. DESIGN INFORMATION Attach supporting calculations/documentation. The soils report must be based upon an actual field investigation and soil borings. County soil maps are not an acceptable source of soils information. All elevations shall be in feet mean sea level (first). Soils Report Summary Soil Type Newhan fine sand Infiltration Rate 1011+ SHWT Elevation 7.5' Basin Design Parameters Design Storm 1.0 Design Volume 1051 Drawdown Time 1.4 Basin Dimensions Basin Size ft.� Basin Volume Provided 3,706.5 Basin Elevations Bottom Elevation 10.0 Storage Elevation 10.28 Top Elevation 11.0 in/hr or cfq r/sf (circle appropriate units) finsl (Seasonal High Water Table elevation) inch (1.5 inch event for SA waters, I inch eventfor others) c.f. hrs (irregular geometry see attached plan) ft. = sq. ft. (bottom dimensions) c.f. Top of Basin Area: 4,175 s.f. Bottom of Basin Area: 3,238 s.f. fmsl fmsl fmsl Form SWU-103 Rev.3.99 Pagel of 3 IIl. 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 Qoe, Section: 15 A NCAC 2H .1008. Initial in the space provided to indicate -that 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. Attach justification if a requirement has not been met. Applicants Initials bmrz a. System is located 50 feet from class SA waters and 30 feet from other, surface waters. Drn M b. System is located at least 100 feet from water supply wells. L)M V, c. Bottom of system is at least 2 feet above theseasonal high-water table. bM(Z- d. Bottom of the system is 3 feet above any bedrock or impervious soil horizon. t>M(Z. e. System is not sited on or in fill material or DWQ approval has been obtained. f. System. is located in a recorded drainage easement for the purposes of operation and maintenance and has recorded access easements to the nearest public right-of-way. �'>MfL g. Drainage area for the device is less than 5 acres.' bM 2 h. Soils have a minimum hydraulic conductivity of 0.52 inches per hour and soils report is attached. Y bMV, i. System captures and infiltrates the runoff from the fast 10'inch.of rainfall (1.5 inch event for areas:diaining to SA waters ). Design volume. and infiltratioh c'alcul'ations attached. DMR- j. System is sized to take into account the runoff at the ultimate built -out potential from all surfaces draining to the system, including any off -site drainage. Calculations attached. d� k. All side slopes stabilized with vegetated cover are -no -steeper than 3:1 (H:V). DM1Z 1. A pretreatment device such as a catch basin, grease trap, filter strip, grassed swale or sediment trap is provided. DMfL in. Bottom of the device is covered with a layer of clean sand to arkaverage depth of 4 inches a/'a Pizov,eeA or dense vegetative cover is provided. 3TORJtlsE IN Sx a P- n. Vegetated filter is provided for overflow and detail is shown on plans (Required minimum "`" length is 50.feet for SA waters, 30 feet for other waters). t bMQ- o. Flow distribution mechanism within the basin is provided. DM2 p. A benchmark is provided to determine the sediment accumulation in the pretreatment device. (56E NOTE N.) q. Runoff in excess of the design volume bypasses off-line systems (bypass detail provided). r. System is designed to draw down the design storage volume to the proposed bottom elevation under seasonal high water conditions within five days. A soils report and all pertinent draw -down calculations are attached. I�M1Z s. Plans ensure that the installed system will meet design specifications (constructed or restored) upon initial operation once the project is complete and the entire drainage area is stabilized. Form SWU-103 Rev 3.99 - Page 2 of 3 IV. INFILTRATION BASIN OPERATION AND MAINTENANCE AGREEMENT 1. After every runoff producing rainfall event and at least monthly inspect the infiltration system for erosion, trash accumulation, vegetative cover, and general condition. 2. Repair eroded areas immediately, re -seed as necessary to maintain adequate vegetative cover, mow vegetated cover to maintain a maximum height of six inches, and remove trash as needed. 3. After every runoff producing rainfall event and at least monthly inspect the bypass, inflow and overflow structures for blockage and deterioration. Remove any blockage and repair the structure to approved design specifications. 4. Remove accumulated sediment from the pretreatment system and infiltration basin annually or when depth in the pretreatment unit is reduced to 75% of the original design depth. The system shall be restored to the original design depth without over -excavating. Over -excavating may cause the required water table separation to be reduced and may compromise the ability of the system to perform as designed. Removed sediment shall be disposed of in an appropriate manner and shall not be handled in a manner that will adversely impact water quality (i.e. stockpiling near a stormwater treatment device or stream, etc.). A benchmark shall be established in the pretreatment unit. The benchmark will document the original design depth so that accurate sediment accumulation readings can be taken. The measuring device used to determine the depth at the benchmark shall be such that it will give an accurate depth reading and not readily penetrate into accumulated sediments. / AuS L When the design depth reads 10. ZS feet in the pretreatment unit, the sediment shall be removed from both the pretreatment unit and the infiltration basin. 5. If the Division determines that the system is failing, the system will immediately be repaired to original design specifications. If the system cannot be repaired to perform its design function, other stormwater control devices as allowed by NCAC 2H .1000 must be designed, approved and constructed. I acknowledge and agree by my signature below that I am responsible for the performance of the five 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 and s, E !Vote: The IegaN,vrss'ponsible 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, I�/�LLt4 L� • ��A-f ! t✓(1 , a Notary Public for the State of l 4, County of ^L t '''' '''' """" ��_� do hereby certify that G personally appeared before me this Sk day ofZDO>r' , and acknowledge the due execution of the orgoing infiltration basin maintenance requirements. Witness my hand and official seal, SEAL am IAL SEAL'lic, North Carolinanty of Dere W. Warren� s4/10/2010 My commission expires "'f • ( O • ( t7 Page 3 of 3 1 Permit No. Sw (o-�-07o' (to e provi e y� JUL 0 12005 State of North Carolina Department of Environment and Natural Resources ®lp/Q.1A//t p0 Division of Water Quality YY tlVf1SIlTORMWATER MANAGEMENT PERMIT APPLICATION FORM INFILTRATION BASIN SUPPLEMENT This farm may be photocopied for use as an original DWQ Stormwater Management Plan Review: A complete stormwater management plan submittal includes a stormwater management permit application, an infiltration basin supplement for each system, design calculations, soils report and plans and specifications showing all stormwater conveyances and system details. I. PROJECT INFORMATION Project Name : Island Land Center Contact Person: Jim Geraghty Phone Number: 1252 261-4010 This worksheet applies to: Basin No. 2 in Drainage Area 2 (as identified on plans) (from Form SWU-101) II. DESIGN INFORMATION Attach supporting calculations/documentation. The soils report must be based upon an actual field investigation and soil borings. County soil maps are not an acceptable source of soils information. All elevations shall be in feet mean sea level (fmsl). Soils Report Summary Soil Type Newhan fine sand Infiltration Rate SHWT Elevation Basin Design Parameters Design Storm Design Volume Drawdown Time Basin Dimensions Basin Size 1011+ in/hr or cf)hr/Sf (circle appropriate units) 7.5' 1.0 1861 1.46 fmsl (Seasonal High Water Table elevation) inch (1.5 inch event jar SA waters, I inch event for others) c.f. hrs ft.x Basin Volume Provided 4,120.0 c.f. Basin Elevations Bottom Elevation Storage Elevation Top Elevation 10.0 fmsl 10.45 fmsl 11.0 fmsl (irregular geometry see attached plan) ft. = sq. ft. (bottom dimensions) Top of Basin Area: 4,846 s.f. Bottom of Basin Area: 3,393 s.f. III. REQUIRED ITEMS CHECKLIST The following checklist outlines design requirements per the Stormwater Best Management Practices Manual 0 (N.C. Department of Environment, Health and Natural Resources, February 1999) and Administrative c_oe Section: 15 A NCAC 211.1008. Initial in the space provided to indicate .that 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. Attach justification if a requirement has not been met. Applicants Initials DM 2 a. System is located 50 feet from class SA waters and 30 feet from other surface waters. DM iZ b. System is located at least 100 feet from water supply wells. MV, c. Bottom of system is at least 2 feet above the seasonal -high water table. WA12- d. Bottom of the system is 3 feet above any bedrock or impervious soil horizon. bM fL, e. System is not sited on or in fill material or DWQ approval has been obtained. �M2 f. System is located in a recorded drainage easement for the purposes of operation and maintenance and has recorded access easements to the nearest public right-of-way. AMR g. Drainage area for the device is less than 5 acres. DM 2 h. Soils have a minimum hydrau}ic conductivity of 0.52 inches per hour and soils report is attached. DMt� i. System captures and infiltrates the runoff fioni the first 1.01incli ot}raitifall (1 S imlt event for areas draining to SA waters ). Design vblume: and infrltratibii calcuiations attached. DM2 j. System is sized to take into account the runoff at the ultimate built -out potential from all surfaces draining to the system, including any off -site drainage. Calculations attaehed: '6MIZ k. All side slopes stabilized with vegetated cover are no steeper than 3:1 (H:V). 6M2 1. A pretreatment device such as a catch basin, grease trap, filter strip, grassed swale or sediment trap is provided. pMR- in. Bottom of the device is covered with a layer of clean sand to an average depth of 4 inches u/.APriovmEA or dense vegetative cover is provided. sTORAW W SK Mr n. Vegetated filter is provided for overflow and detail is shown on plans (Required minimum 'AA&r;;, length is 50.feet for SA waters, 30 feet for other waters). DN►2 o. Flow distribution mechanism within the basin is provided. �MR' p. A benchmark is provided to detemune the sediment accumulation in the pretreatment device. (5" NOTE N. q. Runoff in excess of the design volume bypasses off-line systems (bypass detail provided). r. System is designed to draw down the design storage volume to the proposed bottom elevation under seasonal high water conditions within five days.. A soils report and all pertinent draw -down calculations are attached. DMiZ s. Plans ensure that the installed system will meet design specifications (constructed or restored) upon initial operation once the project is complete and the entire drainage area is stabilized. Form SWU-103 Rev 3.99 Page 2 of 3 IV. INFILTRATION BASIN OPERATION AND MAINTENANCE AGREEMENT 1. After every runoff producing rainfall event and at least monthly inspect the infiltration system for erosion, trash accumulation, vegetative cover, and general condition. 2. Repair eroded areas immediately, re -seed as necessary to maintain adequate vegetative cover, mow vegetated cover to maintain a maximum height of six inches, and remove trash as needed. 3. After every runoff producing rainfall event and at least monthly inspect the bypass, inflow and overflow structures for blockage and deterioration. Remove any blockage and repair the structure to approved design specifications. 4. Remove accumulated sediment from the pretreatment system and infiltration basin annually or when depth in the pretreatment unit is reduced to 75% of the original design depth. The system shall be restored to the original design depth without over -excavating. Over -excavating may cause the required water table separation to be reduced and may compromise the ability of the system to perform as designed. Removed sediment shall be disposed of in an appropriate manner and shall not be handled in a manner that will adversely impact water quality (i.e. stockpiling near a stormwater treatment device or stream, etc.). A benchmark shall be established in the pretreatment unit. The benchmark will document the original design depth so that accurate sediment accumulation readings can be taken. The measuring device used to determine the depth at the benchmark shall be such that it will give an accurate depth reading and not readily penetrate into accumulated sediments. M5L When the design depth reads 10-ZS feet in the pretreatment unit, the sediment shall be removed from both the pretreatment unit and the infiltration basin. 5. If the Division determines that the system is failing, the system will immediately be repaired to original design specifications. If the system cannot be repaired to perform its design function, other stormwater control devices as allowed by NCAC 2H .1000 must be designed, approved and constructed. I acknowledge and agree by my signature below that I am responsible for the performance of the five 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. �i�V-n�S�l:,�S' \MAMCls �(ky� Print Name and Title:_ „ Y�,�tn 0 • �o k 1 � n—r7 k . (�1 �A Arlrirrss- a r r. � 1 i 7 \ TO )L --? 9 ((el 3kr Note.' The legr Wresponsible 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•_.) . LA-')Q r lLn ,,aallotary Public for the State of , lyj�f County of �0.i�-fl-� do hereby certify that(: �bl�YY1 personally appeared before me this 2119 day of4(.y k ,ZCOS , and acknowledge the due execution of the forgoing infiltration basin maintenance requirements. Witness my hand and official seal, , Notary Public. North Carolina County of Dare Nancy W. Warren My commission expires � • 1 O . I C) Page 3 of 3 RECEIVED JUL 0 12005 Permit No. SWg05070( to ve provided y 1A/ State of North Carolina ®WQ"WARO Department of Environment and Natural Resources Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM INFILTRATION BASIN SUPPLEMENT This form may be photocopied for use as an original DWO Stormwater Management Plan Review: A complete stormwater management plan submittal includes a stormwater management permit application, an infiltration basin supplement for each system, design calculations, soils report and plans and specifications showing all stormwater conveyances and system details. I. PROJECT INFORMATION Project Name : Island Land Center Contact Person: Jim Geraghty Phone Number: 1252 261-4010 This worksheet applies to: Basin No. 3 in Drainage Area 3 (as identified on plans) (from Form SWU-101) H. DESIGN INFORMATION Attach supporting calculations/documentation. The soils report must be based upon an actual field investigation and soil borings. County soil maps are not an acceptable source of soils information. All elevations shall be in feet mean sea level (fmsl). Soils Report Summary Soil Type Newhan fine sand Infiltration Rate 1011+ SHWT Elevation 7.5' Basin Design Parameters Design Storm 1.0 Design Volume 1390 Drawdown Time 13.24 Basin Dimensions Basin Size in/hr or ef/hr/sf (circle appropriate units) fmsl (Seasonal High Water Table elevation) inch (1.5 inch event for SA waters, I inch event for others) c.f. hrs ft. x (irregular geometry see attached plan) ft. = sq. ft. (bottom dimensions) Basin Volume Provided 3,516.3 c.f. Top of Basin Area: 2,493 s.f. Bottom of Basin Area: 320 s.f. Basin Elevations Bottom Elevation 10.0 fmsl Storage Elevation 10.99 fmsl Top Elevation 12.5 fmsl III. REQUIRED ITEMS CHECKLIST e 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 Cod Section: 15 A NCAC 211.1008. Initial in the space provided to indicate .that 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. Attach justification if a requirement has not been met. Applicants Initials flMIZ a. System is located 50 feet from class SA waters and 30 feet from other surface waters. Dwt fZ b. System is located at least 100 feet from water supply wells. nAiL c. Bottom of system is at least 2 feet above the seasonal high water table. DAIIZ d. Bottom of the system is 3 feet above any bedrock or impervious soil horizon. e. System is not sited on or in fill material or DWQ approval has been obtained. DMrL f. System is located in a recorded drainage easement for the purposes of operation and maintenance and has recorded access easements to the nearest public right-of-way. [�>M(L g. Drainage area for the device is less than 5 acres. DM 2 h. Soils have a minimum hydraulic conductivity of 0.52 inches per hour and soils report is attached. �Mf(, i. System captures and infiltrates the runoff ftom the first l O'inch of rainfall (1S inch event for areas draining to SA waters ). Design volume. and infiltration calculations attached. DMIL j_ System is sized to take into account the runoff at the ultimate built -out potential from all surfaces draining to the system, including any off -site drainage. Calculations attached. dM� k. All side slopes stabilized with vegetated cover are no steeper than 3:1 (H:V). ` bmiz 1. pM2 in. Bottom of the device is covered with a layer of clean sand to an average depth of 4 inches or dense vegetative cover is provided. N/,!, Przcv,eea aToRAir6 uo SL4 a t" n. Vegetated filter is provided for overflow and detail is shown on plans (Required minimum .r, &C- length is 50.feet for SA waters, 30 feet for other waters). A pretreatment device such as a catch basin, grease trap, filter strip, grassed swale or sediment trap is provided. pnti2 0. NAP, P. �5 _E NOTE N. q. ()6A R- r. Flow distribution mechanism within the basin is provided. A benchmark is provided to determine the sediment accumulation in the pretreatment device. Runoff in excess of the design volume bypasses off-line systems (bypass detail provided). System is designed to draw down the design storage volume to the proposed bottom elevation under seasonal high water conditions within five days. A soils report and all pertinent draw -down calculations are attached. ()MfL s. Plans ensure that the installed system will meet design specifications (constructed or restored) upon initial operation once the project is complete and the entire drainage area is stabilized. Form SWU-103 Rev 3.99 - — Page 2 of 3 IV. INFILTRATION BASIN OPERATION AND MAINTENANCE AGREEMENT 1. After every runoff producing rainfall event and at least monthly inspect the infiltration system for erosion, trash accumulation, vegetative cover, and general condition. 2. Repair eroded areas immediately, re -seed as necessary to maintain adequate vegetative cover, mow vegetated cover to maintain a maximum height of six inches, and remove trash as needed. 3. After every runoff producing rainfall event and at least monthly inspect the bypass, inflow and overflow structures for blockage and deterioration. Remove any blockage and repair the structure to approved design specifications. 4. Remove accumulated sediment from the pretreatment system and infiltration basin annually or when depth in the pretreatment unit is reduced to 75% of the original design depth. The system shall be restored to the original design depth without over -excavating. Over -excavating may cause the required water table separation to be reduced and may compromise the ability of the system to perform as designed. Removed sediment shall be disposed of in an appropriate manner and shall not be handled in a manner that will adversely impact water quality (i.e. stockpiling near a stormwater treatment device or stream, etc.). A benchmark shall be established in the pretreatment unit. The benchmark will document the original design depth so that accurate sediment accumulation readings can be taken. The measuring device used to determine the depth at the benchmark shall be such that it will give an accurate depth reading and not readily penetrate into accumulated sediments. When the design depth reads 10• 62.c feet n the pretreatment unit, the sediment shall be removed from both the pretreatment unit and the infiltration basin. 5. If the Division determines that the system is failing, the system will immediately be repaired to original design specifications. If the system cannot be repaired to perform its design function, other stormwater control devices as allowed by NCAC 2H .1000 must be designed, approved and constructed. I acknowledge and agree by my signature below that I am responsible for the performance of the five 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 pa Print Name and Tit Ie� l!I/CC S li �Ct ( GJ mr- K CV- <, I 1 _ �4tlr �jx p Address: V• U. 'b k U 0 11, v J C a v Phone: ( 1 l7 Date: a Signatur Note: The le Ify sponsible 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. / LAD• Lah_r,"a� �V , a Notary Public for the State of 'o ounty of do hereby certify that ^+ M� personally appeared before me this day of , ?—DQ?and acknowledge the due execution of the rgoing i filtration basin maintenance requirements. hand and official seat, Notary Public, North Carolina County of Dare Nancy W. Warren 11! Commission Expires 4/10/2010 commission expires .4 • ( C) - t o Page 3 of 3