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HomeMy WebLinkAboutSW7110902_CURRENT PERMIT_20111006STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO. DOC TYPE CURRENT PERMIT (❑ APPROVED PLANS ❑ HISTORICAL FILE ❑ COMPLIANCE EVALUATION INSPECTION DOC DATE YYYYMMDD r . r�{Aa ® •rf � NCDENR �JaR� . North Carolina Department of Environment and Natural Resources Division of Water Quality Beverly Eaves Perdue Coleen H. Sullins Dee Freeman Governor Director Secretary October 6, 2011 Mr. Arthur Ravenel, III, Managing Partner ARTTSCOTWO, LLC 105 Wappoo Creek Drive, Suite 4-A Charleston, SC 29412 Subject: Stormwater Permit No. SW7110902 Tractor, Supply High Density Project Craven County Dear Mr. Ravenel: The Washington Regional Office received a complete Stormwater Management Permit Application for Tractor Supply on September 20, 2011. Staff review of the plans and specifications has determined that the project, as proposed, will comply with the Stormwater Regulations set forth in Session Law 2008-211 and Title 15A NCAC 2H.1000. We are forwarding Permit No. SW7110902 dated October 6, 2011, for the construction of the subject project. This permit shall be effective from the date of issuance until October 6, 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 150E 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 Vinson, or me at (252) 946-6481. Su concerning this matter, please contact Scott Protection Section AH/sv: S:\WQS\STORMWATE R\PERM IT\SW7110902 cc: Kevin Avolis, PE City of New Bern Planning/Building Inspections Washington Regional Office North Carolina Division of Water Quality Internet: v .ncvvateiqualny org One 943 Washington Square Mall Phone: 252-946.6481 1 FAX: 252-946-9215 NorthCarolina. Washington, NC 27689 FAX: 252-946-9215 Naturally An Equal Opportunity 1 Affirmative Action Employer State Stormwater Management Systems Permit No. SW7110902 STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF WATER QUALITY STATE STORMWATER MANAGEMENT PERMIT HIGH DENSITY DEVELOPMENT In accordance with the provisions of Article 21 of Chapter 143, General Statutes of North Carolina as amended, and other applicable Laws, Rules, and Regulations PERMISSION IS HEREBY GRANTED TO ARTTSCOTWO, LLC Tractor Supply At the intersection of ML King, Jr. Blvd. and Academic Drive, New Bern, Craven County FOR THE construction, operation and maintenance of one infiltration basin and one curb outlet swale in compliance with the provisions of Session Law 2008-211 and 15A NCAC 2H .1000 (hereafter referred to as the "stormwater rules') and the approved stormwater management plans and specifications and other supporting data as attached and on file with and approved by the Division of Water Quality and considered a part of this permit. This permit shall be effective from the date of issuance until October 6, 2021, and shall be subject to the following specified conditions and limitations: I. DESIGN STANDARDS This permit is effective only with respect to the nature and volume of stormwater described in the application and other supporting data. 2. This stormwater system has been approved for the management of stormwater runoff as described in Section 1.8 on page 3 of this permit. The stormwater infiltration basin has been designed to handle the runoff from 110,114 square feet of impervious area. The stormwater curb outlet swale has been designed to handle the runoff from 13,641 square feet of impervious area. 3. This project proposes a curb outlet system. The curb outlet swale shown on the approved plan must be maintained at a minimum of 100' long, maintain 5:1 (H:V) side slopes or flatter, have a longitudinal slope no steeper than 5%, carry the flow from a 10 year storm in a non -erosive manner, maintain a dense vegetated cover, and be located in either a dedicated common area or a recorded drainage easement. 4. The tract will be limited to the amount of built -upon area indicated in Section 1.2 and 1.8 on page 3 of this permit, and as shown on the approved plans. All stormwater collection and treatment systems must be located in either dedicated common areas or recorded easements. The final plats for the project will be recorded showing all such required easements, in accordance with the approved plans. Page 2 of 7 State Stormwater Management Systems Permit No. SW7110902 6. The runoff from all built -upon area within the permitted drainage area of this project must be directed into the permitted stormwater control systems). 7. The built -upon areas associated with this project shall be located at least 50 feet landward of all surface waters. 8. The following design criteria have been permitted for the infiltration basin and must be provided and maintained at design condition: a. Drainage Area, acres: 3.82 b. Total Impervious Surfaces, ft2: 110,114 C. Design Storm, inches: 1.50 / (10yr.=7.Oin.) d. Basin Depth, feet: 5.20 e. Bottom Elevation, FMS 16.00 f. Bottom Surface Area, ft : 7,584 g. Bypass Weir Elevation, FMSy 21.20 h. Permitted Storage Volume, ft : 62,705 i. Predevelopment 1 year 24 hour: 0.09 j. Post -development 1 year 24 hour: 0.00 k. Type of Soil: Autryville I. Expected Infiltration Rate, in/hr: 8.30 m. Seasonal High Water Table, FMSL: 13.00 n. Time to Draw Down, hours: 14.00 o. Receiving Stream/River Basin: Wilson Creek / Neuse p. Stream Index Number: 27 — 101 — 37 q. Classification of Water Body: "C; Sw, NSW" II. SCHEDULE OF COMPLIANCE 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. Records of maintenance activities must be kept for each permitted BMP. The reports will indicate the date, activity, name of person performing the work and what actions were taken. 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. Page 3 of 7 State Stormwater Management Systems Permit No. SW7110902 6. 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. 7. Upon completion of construction, prior to issuance of a Certificate of Occupancy, and prior to operation of this permitted facility, a certification must be received from an appropriate designer for the system installed certifying that the permitted facility has been installed in accordance with this permit, the approved plans and specifications, and other supporting documentation. Any deviations from the approved plans and specifications must be noted on the Certification. A modification may be required for those deviations. Access to the stormwater facilities shall be maintained via appropriate easements at all times. 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. Prior to transfer of ownership, the infiltration basin and/or swale(s) must be inspected and determined to be in compliance with the permit. Any deficiencies will be repaired or replaced prior to the transfer. 11. A copy of the approved plans and specifications shall be maintained on file by the Permittee at all times. 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 to any person .or entity 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 completed Name/Ownership Change form to the Division of Water Quality, signed by both parties, and accompanied by the appropriate documentation as listed on page 2 of the form. The approval of this request will be considered on its merits and may or may not be approved. 2. The permittee is responsible for compliance with all permit conditions until such time as the Division approves the transfer request. 3. 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. Page 4 of 7 State Stormwater Management Systems Permit No. SW7110902 4. 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. 5. 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. 6. 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. 7. The permit issued shall continue in force and effect until revoked or terminated. The permit may be modified, revoked and reissued or terminated for cause. The filing of a request for a permit modification, revocation and reissuance or termination does not stay any permit condition. 8. Unless specified elsewhere, permanent seeding requirements for the stormwater controls must follow the guidelines established in the North Carolina Erosion and Sediment Control Planning and Design Manual. 9. Approved plans and specifications for this project are incorporated by reference and are enforceable parts of the permit. 10. The issuance of this permit does not prohibit the Director from reopening and modifying the permit, revoking and reissuing the permit, or terminating the permit as allowed by the laws, rules and regulations contained in Session Law 2008-211, Title 15A NCAC 2H.1000, and NCGS 143-215.1 et. al. 11. The permittee shall notify the Division in writing of any name, ownership or mailing address changes at least 30 days prior to making such changes. 12. This permit shall be effective from the date of issuance until October 6, 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 6ch day of October, 2011. LINA ENVIRONMENTAL MANAGEMENT COMMISSION 7z = for oleen H. 6011ins: Direc or Division of Water Quality By Authority of the Environmental Management Commission Permit No. SW7110902 Page 5 of 7 State Stormwater Management Systems Permit No. SW7110902 Tractor Supply — New Bern Stormwater Permit No. SW7110902 Craven County Designer's Certification I, , as a duly registered in the State of North Carolina, having been authorized to observe (periodically/ weekly/ full time) the construction of the project, (Project) for (Project Owner) hereby state that, to the best of my abilities, due care and diligence was used in the observation of the project construction such that the construction was observed to be built within substantial compliance and intent of the approved plans and specifications. The checklist of items on page 2 of this form is included in the Certification. Noted deviations from approved plans and specification: Signature Registration Number Date SEAL Page 6 of 7 State Stormwater Management Systems Permit No. SW7110902 Certification Requirements: 1. The drainage area to the system contains approximately the permitted acreage. 2. The drainage area to the system contains no more than the permitted amount of built -upon area. 3. All the built -upon area associated with the project is graded such that the runoff drains to the system. 4. All roof drains are located such that the runoff is directed into the system. 6. The bypass structure weir elevation is per the approved plan. 6. The bypass structure is located per the approved plans. 7. A Trash Rack is provided on the bypass structure. 8. All slopes are grassed with permanent vegetation. 9. Vegetated slopes are no steeper than 3:1. 10. The inlets are located per the approved plans and do not cause short-circuiting of the system. 11. The permitted amounts of surface area and/or volume have been provided. 12. All required design depths are provided. 13. All required parts of the system are provided. 14. The required system dimensions are provided per the approved plans. cc: NCDENR-DWQ Regional Office City of New Bern. Planning/Building Inspections Page 7 of 7 tractor Supply — New Bern Rormwater Permit No. SW7110902 yen Courrtv )esigner's Certification State Stormwater Management Systems Permit No. §W7110902 RECEIVE® MAR 2 8 2012 J. Kevin Avolis as a duty registered Professional Engineer intheState ;f North Carolina, having been authorized to observe (periodically/ weekly/ full time) the instruction of the project, Tractor Supply (Project) for ARTTSCOTWO , LLC I (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 bullt 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: Page 6 of 1 't • i'� � � .:' �. �' �V ' State Stormwater Management Systems Permit No, SW7110902 Certification Requirements: ✓ 1. The drainage area to the system contains approximately the permitted acreage. 2. The drainage area to the system contains no more than the permitted amount / of built -upon area. 3. All the built -upon area associated with the project is graded such that the runoff drains to the system. ✓4. All roof drains are located such that the runoff is directed into the system. �ZI5. The bypass structure weir elevation is per the approved plan. ✓6. 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. ✓9. Vegetated slopes are no steeper than 3:1. ✓ 10 The inlets are located per the approved p tans and do not cause short-circuitin I✓ 11. -712. ✓13. —714. of the system. 9 The permitted amounts of surface area and/or volume have been provided. All required design depths are provided. All required parts of the system are provided. The required system dimensions are provided per the approved plans. cc: NCDENR-DWQ Regional Office City of New Bern Planning/Building Inspections Page 7 of 7 AVOLIS ENGINEERING, P.A. P.O. Box 15564 New Bern, North Carolina 28561 Office: 252.633.0068 RECEIVE® March 22, 2012 MAR 2 8 2012 Mr. Al Hodge Regional Supervisor Surface Water Protection Section Washington Regional Office 943 Washington Square Mall Washington, NC 27889 RE: Engineer's Stormwater Certification — SW 7110902 "tractor Supply, New Bern, Craven County, North Carolina AE Project No. 10051 Dear Al: Enclosed please find the Engineer's Stormwater Certification for the above -referenced project. Should you have any questions relating to this matter or need any additional information or assistance, please do not hesitate to call. Sincerely, :vin Avolis, P.E. ce-President F� r `DWQ USE ONLY . . ... -,..: e s, Fee Paid Permit Number Gr e 094) Applicabl 1 astal SW -1115 ❑ Coasta SW - 2008 ❑ Ph II - Post Construction (select all t(g+td 1'���6❑ Non-CoastalSW- HQW/ORW Waters ❑ Universal Stormwater Management Plan �(r LJ�n�y�.�ther WQ M mtPlan: State of North Carolina M �i E Department of Environment and Natural Resources Q`1 Division of Water Quality �2 W py tfij STORMWATER MANAGEMENT PERMIT APPLICATION FO�CT `�n, Q (� 0 This form may be photocopied for use as an original D1J^u_ Y Y �1 �O I. GENERAL INFORMATION 1. Project Name (subdivision, facility, or establishment name -should be consistent with project name on plans, specifications, letters, operation and maintenance agreements, etc.): 2. Location of Project (street address): 3821 Mi. King, In Boulevard City:New Bern County:Craven Zip:28562 3. Directions to project (from nearest major intersection): Project is located southeast of the intersection of ML King Jr. Boulevard (U517) and Academic Drive. 4. Latitude:35° 05' 41" N Longitude:77* 06' 43" W of the main entrance to the project. IL PERMIT INFORMATION: 1. a. Specify whether project is (check one): ®New ❑Modification b.If this application is being submitted as the result of a modification to an existing permit, list the existing permit number , its issue date (if known) 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: 6.5 ac of Disturbed Area 0404/401 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: Form SWU-101 Version 07Jun2010 Page 1 of 6 floc E t 938 � ti, r Ill. CONTACT INFORMATION I. 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:ARTTSCOTWO. LLC Signing Official & Title:Arthur Ravenel, III - Managing Partner b.Contact information for person listed in item I above: Street Address:105 Wappoo Creek Drive, Suite 4-A City:Charleston Mailing Address (if Phone: (843 ) 723-7840 Email:arthur@arjrc.com Zip:29412 Fax: (843 ) 722-6647 c. Please check the appropriate box. The applicant listed above is: ❑ The property owner (Skip to Contact Information, item 3a) ❑ Lessee* (Attach a copy of the lease agreement and complete Contact Information, item 2a and 2b below) ® Purchaser* (Attach a copy of the pending sales agreement and complete Contact Information, item 2a and 2b below) ❑ Developer* (Complete Contact Information, item 2a and 2b below.) 2. a. Print Property Owner's name and title below, if you are the lessee, purchaser or developer. (This is the person who owns the property that the project is located on): Property Owner/Organization: Meadows Properties, LLC Signing Official & Title:Heidi W. Ravenel, N en+er IAo. ag of b. Contact information for person listed in item 2a above: Street Address:120 Farmfield Avenue City:Charleston State:SC Zip:29407 Mailing Address (if applicable): Phone: ( ) Fax: 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/ Signing Official & Title b.Contact information for person listed in item 3a above: Mailing Address: Phone: ( ) Fax: 4. Local jurisdiction for building permits: City of New Bern Point of Contact:Mr. Johnny Clark Phone #: (252 ) 639-2941 Form SWU-101 Version 07Jun2010 . Page 2 of 6 IV. PROJECT INFORMATION 1, In the space provided below, briefly summarize how the stormwater runoff will be treated. Stormwater from the high density portion of the site will be treated by an infiltration basin designed to capture the 10-year, 24-hour storm. The low density driveway area runoff will be treated by a 5:1 swale. 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 Neuse River basin. 4. Total Property Area: 5.96 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*:5.96 acres Total project area shall be calculated to exclude the following the nornnal pool of impounded structures, the area between the banks of streams and rivers, the area below the Nornal High Water (NHW) line or Mean High Water (MHW) line, and coastal wetlands landward from the NHW (or MHA line. The resultant project area is used to calculate overall percent built upon area (BUA). Non -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 = 47.64 % 9. How many drainage areas does the project have?2 (For high density, count 1 for each proposed engineered stormrater BMP. For low density and other projects, use 1 for the whole property area) 10. Complete the following information for each drainage area identified in Project Information item 9. If there are more than four drainage areas in the project, attach an additional sheet with the information for each area provided in the same format as below. 'XPe;,t� ) pr( 1 P G J" " Basin Information` Drainage Area Drainage Area Drainage Area Drainage Area " Receiving Stream Name Wilson Creek Wilson Creek Stream Class * C; Sw, NSW C; Sw, NSW Stream Index Number * 27-101-37 27-101-37 Total Drainage Area (so 166,375 93,407 On -site Drainage Area (sf) 166,375 85,782 Off -site Drainage Area (sf) 1 0 7,625 Proposed Impervious Area** (so 1.10,114 13,641 % Im ervious Area** total 66.18 14.6 Impervious" Surface Area '' 'Draina e Areal_ Draina e Area2 Draina eArea Draina e Area On -site Buildings/Lots (so 19,050 0 On -site Streets (so 0 6,016 On -site Parking (so 84,126 0 On -site Sidewalks (so 6,938 0 Other on -site (so 0 0 Future (so 0 0 Off -site (sf) 1 0 7,625 (Driveway) Existing BUA*** (sf) 1 0 0 Total (so: 1 110,114 13,641 * Stream Class and Index Number can be determined at: lltp:dportaLuedennr.or oeb/mq[ps/csn/elassifieatious 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 annount 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 07Jun2010 Page 3 of 6 11. How was the off -site impervious area listed above determined? Provide documentation. Field visit and topographic survey. Proiccts in Union County: Contact DWQ Central Office staff to check if the project is located within a Threatened & Endangered Species watershed that inav be subject to more stringent stormwater requirements as per NCAC 02B .0600. V. SUPPLEMENT AND O&M FORMS The applicable state stormwater management permit supplement and operation and maintenance (O&M) forms must be submitted for each BMP specified for this project. The latest versions of the forms can be downloaded from httt)://Dortal.ncdenr.ore/web/wo/ws/su/bmD-manual. VI. SUBMITTAL REQUIREMENTS Only complete application packages will be accepted and reviewed by the Division of Water Quality (DWQ). A complete package includes all of the items listed below. A detailed application instruction sheet and BMP checklists are available from http://portal. ncdennorg/web/wg/ws/su/statesw/forms dots. 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://porta1.ncdennorg/web/wq/ws/so/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 ham://portal.ncclennorg/web/wq/ws/su/statesw/forms does. II r 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 Porm. (if required as per Part VII beloL oeo) 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.envhel]2.org/pages/onestopexpress.htmI 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. 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 NI-IW 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. I. Details of roads, drainage features, collection systems, and stormwater control measures. m. Wetlands delineated, or a note on the plans that none exist. (Must be delineated by a qualified person. Provide documentation of qualifications and identify the person who made the determination on the plans. n. Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations. o. Drainage areas delineated (included in the main set of plans, not as a separate document). p. Vegetated buffers (where required). Form SWU-101 Version 07Jun2010 Page 4 of 6 '9. Copy of any applicable soils report with the associated SHWT elevations (Please identify ld' ' f 1 F111 11. h h eevations m ad ition to depths) as well th as a map o e boring ocahons witte existing efevations 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.) _ A copy of the most current property deed. Deed book: 1633 Page No: 242 For corporations and limited liability corporations (LLC): Provide documentation from the NC Secretary of State or other official documentation, which supports the titles and positions held by the persons listed in Contact Information, item la, 2a, and/or 3a per NCAC 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/Corl2orations/­CSearch.aVx VIL 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://portalmcdennorg/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:Kevin Avolis, PE Consulting Firm: Avolis Engineering, PA Mailing Address:P.O. Box 15564 City:New Bern Phone: (252 ) 633-0068 Email:avolisengineeriiig@embarqmail.com State:NC Zip:28561 Fax: (252 ) 633-6507 IX. PROPERTY OWNER AUTHORIZATION (if Contact Information, item 2 has been filled out, complete this section) 1, (print or type naine of person listed in Contact Information, item 2a) Heidi Ravenel, Membei Moa ogef, certify that I own the property identified in this permit application, and thus give permission to (print or type mmne of person listed in Contact Information, item 1a) Arthur Ravenel with (print or type mmne of organization listed in Contact Information, item la) ARTTSCOTWO, LLC 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 07Jun2010 Page 5 of 6 As the legal property owner I acknowledge, understand, and agree by my signature below, that if my designated agent (entity listed in Contact Information, item 1) dissolves their company and/or cancels or defaults on their lease'agreement, or pending sale, responsibility for compliance with the DWQ Stormwater permit reverts back to me, the property owner. As the property owner, it is my responsibility to notify DWQ immediately and submit a completed Name/Ownership Change Form within 30 days; otherwise I will be operating a stormwater treatment facility without a valid permit. I understand that the operation of a stormwater treatment facility without a valid permit is a violation of NC General Statue 143-215.1 and may result iri appropriate enforcement action including the assessment of civil penalties of up to $25,000 per day, pursuant to NCGS 143-215.6. Signature: �lfGQ�eT,foP i • G1-c 4, r C • Date: I^ 1, �d N ✓��1 t9Iedd(1 ZT!! Z-Notary Public for the State of t � ounty of C{ [/�2l �S�or✓ do hereby certify that t4�t D I �y��✓�L personally appeared before me this I 17d4avof lJ L and acknowle$e the due ep9cution c1the application for a stormwater permit. Witness my hand and official seal, SEAL L &MWIM h, NdW cnanosimcountySt Ch dS`ti mnfVp TIY11551plI Evp1165 NOv. 71, 101f (2/ I My commission expires /_ 1 1 A X. APPLICANT'S CERTIFICATION 1, (print or hjpe mmne of person listed in Contact Information, item ]a) Arthur Ravenel certify that the information included on this permit application form is, to the best of my knowledge, correct and that the project will be constructeo in confor anc with the approved plans, that the required deed restrictions and protective covenants wil Ue ecorded, nd the proposed project complies with the requirements of the applicable stormwater rulesiin r 15A AC�1000, SL 2006-246 (Ph. II -Post Constructy6n) Pr SL 2008-217. Signature: I N Dater I, �C�hSlryv" a Notary Public for the State of N County of C r0"x LPG do hereby certify that '1 0 J �"�1 -1-u- personally appeared before me this Sf-day of �-Ati,S 2C,t\ and acynpwledge the due execution of the application for a stormwater permit. Witness my hand and official seal"- NOTARY PUBLIC �� I eNCO`�p�`• SEAL My commission expires \ 221 tow Form SWU-101 Version 07Jun2010 Page 6 of 6 Permit . (to be provided by DWD) NCDEMRrXpRESS ��� STORMWATER MANAGEMENT PERMIT APPLICATION FORM .SEP 2 0 2011 401 CERTIFICATION APPLICATION FORM p' pe GRASSED SWALE SUPPLEMENT NC ®ENR This form must be filled out, printed and submitted. The Required Items Checklist (Part III) must also be filled out, printed and submitted along with all of the required information. Project name Contact name Phone number Date Drainage area number Site Characteristics Drainage area Impervious area Percent impervious Design rainfall depth Peak Flow Calculations 10-yr storm runoff depth 10-yr storm intensity Post -development 10-yr storm peak Flow Velocity Maximum non -erosive velocity (peak 10-year storm) Soil characteristics (enter 'Y' below) Sand/silt (easily erodible) Clay mix (erosion resistant) Grass Type (enter Y' below) Bermuda Tall fescue Bahiagrass Kentucky bluegrass Grass -legume mixture Swale type: Fill out one of the options below: Option 1: Curb Outlet Swale: Maximum velocity Side slopes Swale length Option 2: Conveyance Swale, Seekina Pollutant Credit: Maximum velocity for 10-yr storm Side slopes Swale length F 93,407 00 f? I 13,641.001fl2 14.6% % I 1.50' inch 7.00 lin I 8.38 l in/hr ( 5.20 Ife/sec 5.00 fYsec C X I I X—� I I I I I I - I (Y or N) 1.00 OK 5.00 1:1 OK 319.00 ift OK Y I(YorN) 1.00 Ift/sec OK 5.00 1:1 OK 319.00 Ift OK RECEIVE® SEP 19 2011 DWQ-WARO Form SW401-Grassed Swale-Rev.3 Parts I and II. Project Design Summary, Page 1 of 2 Permit Number: (to be provided by DWQ) Swale Characteristics Swale Shape: Enter an'Y in the appropriate cell below: Trapezoidal Parabolic V-shaped Width of the bottom of the Swale Width of the top of the Swale Additional Information Is the Swale sized for all runoff from ultimate build -out? Is the BMP located in a proposed drainage easement with a recorded access easement to a public Right of Way (ROW)? What is the distance from the bottom of the Swale to the SHWT? What is the ground level elevation? What is the elevation of the bottom of the swale? What is the SHWT elevation? What is the longitudinal slope of the Swale? What is the depth of freeboard? I I x I 0.00 lit ( lit (YOrN) OK I I Yj (Y or N) OK 6.90 it OK OK OK Form SW401-Grassed Swale-Rev.3 Parts I and II. Project Design Summary, Page 2 of 2 Permit No: (to be assigned by DWQ) III. REQUIRED'ITEMS CHECKLIST Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a requirement has not been met, attach justification. Initials Pagel Plan Sheet No. 1. Plans (1" = 50' or larger) of the entire site showing: - Design at ultimate build -out, - Off -site drainage (if applicable), - Delineated drainage basins (include Rational C coefficient per basin), - Swale dimensions (width, length, depth), - Maintenance access, - Proposed drainage easement and public right of way (ROW), - Grass species, and - Boundaries of drainage easement. c4— 2. Plan details (1" = 50' or larger) for the grassed swale showing: - Swale dimensions (width, length, depth), - Maintenance access, - Proposed drainage easement and public right of way (ROW), - Design at ultimate build -out, - Grass species, - Off -site drainage (if applicable),and - Boundaries of drainage easement. �V V — 3. Section view of the grassed swale (1" = 20' or larger) showing: - Side slopes, - Longitudinal slope, - Freeboard - Swale dimensions, and - SHWT level(s) A"n*HIV 4. Supporting calculations (including maximum velocity calculations for applicable storms) =Y 5. A copy of the signed and notarized operation and maintenance (0&M) agreement. AITACHO 6. A copy of the deed restrictions (if required). SW401-Grassed Swale-Rev.3 Part III, Page 1 of 1 EXPRESS PermitName: P Qi to be ravided Y DW b Drainage Area Number: SEP 2 0 2011Grassed Swale Operation and Maintenance Agreement NC ®ENR 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 of the grassed swale will be carefully managed to reduce the sediment load to the grassed swale. — After the first-time fertilization to establish the grass in the swale, fertilizer will not be applied to the grassed swale. The grassed Swale will be inspected once a quarter. 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 length of the Trash/debris is present. Remove the trash/debris. swale Areas of bare soil and/or Regrade the soil if necessary to erosive gullies have formed. remove the gully, and then re -sod (or plant with other appropriate species) and water until established. Provide time and a one-time fertilizer application. Sediment covers the grass at Remove sediment and dispose in an the bottom of the Swale. area that will not impact streams or BMPs. Re -sod if necessary. Vegetation is too short or too Maintain vegetation at a height of long. approximately six inches. 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. RECEIVED SEP 19 2011 DWQ- V VAFrRO Form SW401-Grassed Swale O&M-Rev.3 Page 1 of 2 Permit Number: (to be provided by DWQ) I acknowledge and agree by my signature below that I am responsible for the performance of the maintenance procedures listed above. I agree to notify DWQ of any problems with the system or prior to any changes to the system or responsible party. Project name:Tractor Supply BMP drainage area number:2 Print name:Arthur Ravenel, III Title:Managing Partner - ARTTSCOTWO, LLC 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, � t �� rnm �t , a Notary Public for the State of C , County of C t^0. rc do hereby certify that 0-f-A4- ' _lSL personally appeared before me this _ day of (� 2G\k , and acknowledge the due execution of the forgoing grassed swale maintenance requirements. Witness my hand and official seal, sl NOTARY rvCLl(; 09 eNICt0`\` '' SEAL My commission expires �fJ�t \ 22 2 3\-A Form SW401-Grassed Swale O&M-Rev.3 Page 2 of 2 EXPRESS Permit No. (to be provided by DWQ) ,SEP d 0 i1111 I'` State of North Carolina Department of Environment and Natural Resources ����'��® Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM SEP 19 2011 LOW DENSITY SUPPLEMENT This form may be photocopied far use as an original n w .o_, n IARO A low density project is one that meets the appropriate criteria for built upon area and transports stormwater runoff primarily through vegetated conveyances. Low density projects should not have a discrete stormwater collection system as defined by 15A NCAC 2H .1002(18). Low density requirements and density factors can be found in Session Law 2008-211, 15A NCAC 2H .1000, Session Law 2006-246, and the DWQ BMP Manual. Curb and gutter systems are allowed provided they meet the requirements in 15A NCAC 2H .1008(g). 1. PROJECT INFORMATION Project Name : Tractor Supply Contact Person: Kevin Avolis, PE Phone Number: ( 252 )633-0068 Number of Lots:I Allowable Built Upon Area (BUA) Per Lot*:N/A Number of Dwelling Units Per Acre**:N/A Low Density Development (check one): ❑ without curb & gutter ® with curb & gutter, outlets to (check one): ® Swales ❑ Vegetated Area *If lot sizes are not uniform, attach a table indicating the number of lots, lot sizes and allowable built upon area for each lot. The attachment must include the project name, phase, page numbers and provide area subtotals and totals. BUA shall be shown in units of square feet. **(Phase 11 Post -Construction (non -SA) only) II. BUILT UPON AREA Refer to DWQ's forms and applications website for specific language that must be recorded in the deed restrictions for all subdivided projects.(http://h2o.enr.state.nc.us/su/bmp_fonns.htm) Complete the following calculation in the space provided below where: • SA Site Area - the total project area above Mean High Water. • DF Density Factor - the appropriate percent built upon area divided by 100. • RA Road Area - the total impervious surface occupied by roadways. • OA Other Area - the total area of impervious surfaces such as clubhouses, tennis courts, sidewalks, etc. • No. of Lots - the total number of lots in the subdivision. • BUA per Lot - the computed allowable built upon area for each lot including driveways and impervious surfaces located between the front lot line and the edge of pavement. • Total allowable lot BUA - the computed allowable built upon area for all lots combined. • Total BUA from lot listing - the sum of built upon area allocated for each lot on the list of non -uniform lots. Form SW401-Low Density-Rev.3-2/10/09 Page 1 of 4 ME e f 93Z � �� Calculation: For uniform lot sizes: (SA: ft2 x DF: ) — (RA: ft2) — (OA: ft2) = BUA per Lot = ftZ (No of Lots: For non -uniform lot sizes: a. (SA: ft2 x DF: ) — (RA: ft2) — (OA: ft2) = Total allowable lot BUA = ft2 b. Total BUA from lot listing: sf. b must be < a III. DESIGN INFORMATION Complete the following table. If additional space is needed the information should be provided in the same format as Table 1 and attached to this form. Rainfall intensity data can be found in Appendix 8.03 of the State of North Carolina Erosion and Sediment Control Planning and Design Manual or at http://hdsc.nws.noaa.gov/hdsc/pfds/ Table 1. Swale design information based on the 10-vear storm. Swale No. Drainage Area (ac)' Impervious Area (ac)' Grassed Area (ae) C Q (cfs) Slope (%) V.11'. (fps) Vactual (fps) Flow Depth ft l 2.14 0.31 1.06 0.45 5.2 0.10 4.5 1.0 1.0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Form SW401-Low Density-Rev.3-2/10/09 Page 2 of 4 IV. REQUIRED ITEMS CHECKLIST The following checklist outlines design requirements per the North Carolina Administrative Code Section 15A NCAC 2H .1000, NCDENR BMP Manual (2007), Session Law 2006-246, and Session Law 2008-211. Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to indicate that the following requirements have been met and supporting documentation is provided as necessary. If the applicant has designated an agent on the Stormwater Management Permit Application Form, the agent may initial below. If any item is not met, then iustification must be attached. Only complete items n through p for projects with curb outlets. Page/Plan Initials Sheet No. VtA- a. t For projects in the 20 coastal counties: Per NCAC 2H.1005, a 50 foot wide vegetative buffer is provided adjacent to surface waters. For Redevelopment projects, a 30' wide vegetative buffer adjacent surface waters is provided. hA b. t For HQW or ORW projects outside the 20 coastal counties: A 30 foot wide vegetative buffer is provided adjacent to surface waters. 14A c. t For Phase II Post -Construction projects: All built upon area is located at least 30 feet landward of all perennial and intermittent surface waters. 4 d. Deed restriction language as required on form SWU-101 shall be recorded as a restrictive covenant. A copy of the recorded document shall be provided to DWQ within 30 days of platting and prior to the sale of any lots. q-rjt� Of e. Built upon area calculations are provided for the overall project and all lots. f. Project conforms to low density requirements within the ORW AEC. (if applicable per 15A NCAC 2H .1007) C 9 g. Side slopes of swales are no steeper than 3:1; or no steeper than 5:1 for curb outlet swales. V 4 It. Longitudinal slope of swales is no greater than 5%; for non -curb outlet projects, calculations for shear stress and velocity are provided if slope is greater than 5%. lk C8LCL i. At a minimum, swales are designed to carry the 10 year storm velocity at a non -erosive rate. NtA j. Swales discharging to wetlands are designed to flow into and through the wetlands at a non - erosive velocity (for this flow requirement into wetlands, non -erosive is velocity < 2 ft/s). B' C` k. Swale detail and permanent vegetation is specified on the plans. I. Swale detail provided on plans; includes grass type(s) for permanent vegetative cover. -ram m. Swales are located in recorded drainage easements. C-+ n.tt Length of swale or vegetated area is at least 100 feet for each curb outlet. 4- o." The system takes into account the run-off at ultimate built -out potential from all surfaces draining to the system (delineate drainage area for each swale). C4- p.tt Curb outlets direct flow to a swale or vegetated area. t Projects in the Neuse, Tar -Pamlico, Catawba River basins, and Randleman Lake may require additional buffers. tt Only complete these items for projects with curb outlets. Forth SW401-Low Density-Rev.3-2/10/09 Page 3 of 4 V. SWALE SYSTEM MAINTENANCE REQUIREMENTS Mowing will be accomplished as needed according to the season. Grass height will not exceed six inches at any time; and grass will not be mowed too close to the ground or "scalped". 2. Swales will be inspected monthly or after every runoff producing rainfall event for sediment build-up, erosion, and trash accumulation. 3. Accumulated sediment and trash will be removed as necessary. Swales will be reseeded or sodded following sediment removal. 4. Eroded areas of the swales will be repaired and reseeded. Swales will be revegetated as needed and in a timely manner based on the monthly inspections. Side slopes must be maintained at the permitted slope. Catch basins, curb cuts, velocity reduction devices, and piping will be inspected monthly or after every significant runoff producing rainfall event. Trash and debris will be cleared away from grates, curb cuts, velocity reduction devices and piping. 6. Swales will not be altered, piped, or filled in without approval from NCDENR Division of Water Quality. acknowledge and agree by my signature below that I am responsible for the performance of the six 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 Title:Arthur Ravenel, III - Managing Partner - ARTTSCOTWO, LLC Note: The legally responsible party should not be a homeowners association unless more than 50% of the lots have been sold and a resident of the subdivision has been named the president. I, I��.f\L(-� o�lrvs✓v� or, V , a Notary Public for the State of N �- , County of J�. Cr Q.V Cl^ , do hereby certify that personally appeared before me this _ day of ��.,.�.� 'Zps s , and acknowledge the due execution of the forgoing swale maintenance requirements. Witness my hand and official seal, Notary signature NOTARY seA�UBLIC Q Z. My commission expires Dl�)f t � 22,'2- porm SW401-Low Density-Rev.3-2/10/09 Page 4 of 4 • �,,.r � �r !�P� LMi � � Yw �'� •' �•i� . {*'�'; �. .,,, �. EV"'RESS Permit (to be provided by DWQ) Ill. REQUIRED,IT,EM$jCHECKLIST u v.pi r •YYY Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a requirement has not been met, attach justification. Page/ Plan RECEIVED Initials Sheet No. G4 1. Plans (1" - 50' or larger) of the entire site showing: SEP , 9 ZO,� - Design at ultimate build -out, - Off -site drainage (if applicable), - Delineated drainage basins (include Rational C coefficient per basin),®, w ,�_, A I �® -Basindimensions, VV VVH - Pretreatment system, - High flow bypass system, - Maintenance access, - Proposed drainage easement and public right of way (ROW), - Overflow device, and - Boundaries of drainage easement. GS 2. Partial plan (1" = 30' or larger) and details for the infiltration basin showing: - Bypass structure, - Maintenance access, - Basin bottom dimensions, - Basin cross-section with benchmark for sediment cleanoul, - Flow distribution detail for inflow, - Vegetated filter, and - Pretreatment device. GS 3. Section view of the infiltration basin (1" = 20' or larger) showing: - Pretreatment and treatment areas, and - Inlet and outlet structures. GS 4. A table of elevations, areas, incremental volumes & accumulated volumes to verity the volume provided. A WK9 5. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. The results of the soils report must be verified in the field by DWO, by completing & submitting the soils investigation request form. County soil maps are not an acceptable source of soils information. �_ 6. A construction sequence that shows how the infiltration basin will be protected from sediment until the entire drainage area is stabilized. AIM2W 7. The supporting calculations. 8. A copy of the signed and notarized operation and maintenance (0&M) agreement. 9. A copy of the deed restrictions (if required). Form SW401-Infiltration Basin-Rev.4 Page 1 of 1 Part III. Required Items Checklist, Page 1 of 1 a soil s� Permit No. 11 (to be provided by D WD) °F WATeq` STORMW ° N ATER MANAGEMENT PERMIT APPLICATION FORM NCDENR t4, ^ YF•'ft 401 CERTIFICATION APPLICATION FORM o Y INFILTRATION BASIN SUPPLEMENT This form must be filled out, printed and submitted. The Required Items Checklist (Part 111) must be printed, rifled out and submitted along with all of the required information. I.11P,RWECT I N F,ORMATION Project Name iTractor Supply Contact Person !Kevin Avolis, PE Phone Number 1252-633-0068 i Date ;8,lul-1 l Drainage Area Number 11 ! Site Characteristics Drainage area Impervious area Percent impervious Design rainfall depth Peak Flow Calculations 1-yr, 24-hr rainfall depth 1-yr, 24-hr intensity Pre -development 1-yr, 24-hr discharge Post -development 1-yr, 24-hr discharge Pre/Post 1-yr, 24-hr peak flow control Storage Volume: Non -SA Waters Minimum design volume required Design volume provided Storage Volume: SA Waters 1.5" runoff volume Pre -development 1-yr, 24-hr runoff volume Post -development 1-yr, 24-hr runoff volume Minimum required volume Volume provided Soils Report Summary Soil type Infiltration rate SHWT elevation Basin Design Parameters Drawdown time Basin side slopes Basin bottom elevation Storage elevation Storage Surface Area Top elevation Basin Bottom Dimensions Basin length Basin width Bottom Surface Area 1 166,375TO 1ft2 110,114.00 Ift' 66.18 % tr 7.00 n ISD 1 3.70 lin 1 0.15 ;in/hr 1 0.09 Ift'/sec 1 0.00 I ft'/sec -0.09 ft'/sec RECEIVE® SEP 19 2011 DWQ-WARD F 13,437.00 It, 1 62,705.00 {ft' OK for non -SA waters Autryville ��� i 8.90 lin/hr 1 13.00 Ifmsl 0.10 days OK 3.00 C1 OK 16.00 fmsl OK 1 21.20 jfmsl 1 17,003.00 Ift2 /6t Ss`t 1 22.00 Ifmsl it 237.00 _ If 32.40 Ift 7,626.00 'fta -71s $4 Form SW401-Infiltration Basin-Rev.5 11Ap2011 Parts I. & 11. Design Summary, Page 1 of 2 Permit No. (to be provided by DWQ) Additional Information Maximum runoff to each inlet to the basin? 1 — 12.: __' ac-in Maximum of 2 acre -inches allowed Length of vegetative filter for overflow 0.00 )fl Filter is too short, must be > 30-ft Distance to structure 50.00 It OK Distance from surface waters 150.00 ift OK Distance from water supply well(s) i 150.00. ;It OK Separation from impervious soil layer i 4.00 ift OK Naturally occuring soil above shwt i 4.00 ff OK Bottom covered with 4-in of clean sand? 1 Y J(Y or N) OK Proposed drainage easement provided? Y I (Y or N) OK Capures all runoff at ultimate build -out? t Y i (Y or N) OK Bypass provided for larger storms? i. N (Y or N) Must provide bypass for larger flows Pretreatment device provided ! None Fonn SW401-Infttmtlon Basin -Revs 11Ap2011 Parts I. & 11. Design Summary, Page 2 of 2 .EXPRESS SEP 2 0 2011 NC ®ENR Permit Number: (to be provided by DWQ) Drainage Area Number: Infiltration Basin Operation and Maintenance Agreement I will keep a maintenance record on this BMP. This maintenance record will be kept in a log in a known set location. Any deficient BMP elements noted in the inspection will be corrected, repaired or replaced immediately. These deficiencies can affect the integrity of structures, safety of the public, and the removal efficiency of the BMP. Important maintenance procedures: — The drainage area will be carefully managed to reduce the sediment load to the infiltration basin. — Immediately after the infiltration basin is established, the vegetation will be watered twice weekly if needed until the plants become established (commonly six weeks). — No portion of the infiltration basin will be fertilized after the initial fertilization that is required to establish the vegetation. — The vegetation in and around the basin will be maintained at a height of approximately six inches. After the infiltration basin is established, it will be inspected once a quarter and within 24 hours after every storm event greater than 1.0 inches (or 1.5 inches if in a Coastal County). Records of operation and maintenance will be kept in a known set location and will be available upon request. Inspection activities shall be performed as follows. Any problems that are found shall be repaired immediately. BMP element: Potentialproblem: How 1 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. RECEIVES SEP 19 2011 Form SW401-Infiltration Basin O&M-Rev.3D' A Q_, w , w RO Page I of 3 BMP element: Potentialproblem: How I will remediate theproblem: The forebay Sediment has accumulated Search for the source of the and reduced the depth to 75% sediment and remedy the problem if of the original design depth. possible. Remove the sediment and dispose of it in a location where it will not cause impacts to streams or the BMP. Erosion has occurred or Provide additional erosion riprap is displaced. protection such as reinforced turf matting or riprap if needed to prevent future erosion problems. Weeds are present. Remove the weeds, preferably by hand. If pesticides are used, wipe them on the plants rather than spraying. The main treatment area A visible layer of sediment Search for the source of the has accumulated. sediment and remedy the problem if possible. Remove the sediment and dispose of it in a location where it will not cause impacts to streams or the BMP. Replace any media that was removed in the process. Revegetate disturbed areas immediately. Water is standing more than Replace the top few inches of filter 5 days after a storm event. media and see if this corrects the standing water problem. If so, revegetate immediately. If not, consult an appropriate professional for a more extensive repair. Weeds and noxious plants are Remove the plants by hand or by growing in the main wiping them with pesticide (do not treatment area. spray). The embankment Shrubs or trees have started Remove shrubs or trees to grow on the embankment. immediately. An annual inspection by an Make all needed repairs. appropriate professional shows that the embankment needs repair. The outlet device Clogging has occurred. Clean out the outlet device. Dispose of the sediment off -site. The outlet device is damaged Repair or replace the outlet device. The receiving water Erosion or other signs of Contact the NC Division of Water damage have occurred at the Quality 401 Oversight Unit at 919- outlet. 733-1786. Form SW401-Infiltration Basin O&M-Rev.3 Page 2 of 3 Permit Number: (to be provided by DWQ) I acknowledge and agree by my signature below that I am responsible for the performance of the maintenance procedures listed above. I agree to notify DWQ of any problems with the system or prior to any changes to the system or responsible party. Project BMP drainage area number: I Print name:Arthur Ravenel, III Title:Managing Partner - ARTTSCOTWO,LLC Note: The legally responsible party should not be a homeowners association unless more than 50% of the lots have been sold and a resident of the subdivision has been named the president. I, (' & n--'m o-y , a Notary Public for the State of L County of , do hereby certify that fur w� personally appeared before me this day of�� 20and acknowledge the due execution of the forgoing infiltration basin maintenance requirements. Witness my hand and official seal, SIM NOTARY( PUBLIC ,a 9�EN10P\0�` SEAL My commission expires 22 12 Form SW401-Infiltration Basin O&M-Rev.3 Page 3 of 3