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HomeMy WebLinkAboutSW7060819_CURRENT PERMIT_20061003STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO. SWDQ�? DOC TYPE L�7CURRENT PERMIT ❑ APPROVED PLANS ❑ HISTORICAL FILE DOC DATE UQ 3 YYYYMMDD Michael F. Easley, Governor William G. Ross Jr„ Secretary North Carolina Department of Environment and Natural Resources Alan W. Klimek, P.E. Director Division of Water Quality October 3, 2006 Mr. David Evans, Jr., President Garris-Evans Lumber Company PO Box 2548 Greenville, NC 27836 Subject: Stormwater Permit No. SW7060819 Garris Evans Lumber Company High Density Project Craven County Dear Mr. Evans: The Washington Regional Office received a complete Stormwater Management Permit Application for Garris Evans Lumber Company on September 22, 2006. 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. SW7060819 dated October 3, 2006, for the construction of the subject project. This permit shall be effective from the date of issuance until October 3, 2016, and shall be subject to the conditions and limitations as specified therein. Please pay special attention.to.the Operation and Maintenance requirements in this permit. Failure to establish an adequate system for operation and maintenance of the stormwater management system will result in future compliance problems. If any parts, requirements, or limitations contained in this permit are unacceptable, you have the right to request an adjudicatory hearing 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, P.O. Drawer 27447, Raleigh, NC 27611- 7447. 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 Scott Vinson, or me at (252) 946-6481. Tncerely, V 7,J Al H Regional Supervisor Surface -Water Protection Section AHlsav: C:ISTORMWATERIPERMIT1SW7060819 cc: Michael Tolson, PE Graven County Building Inspections ashington Regional Office Central Files North Caro Alaturai North Carolina Division of Water Quality Washington Regional Office Phone (252) 946-6481 FAX (252) 946-9215 Customer Service Intemet: w},vw.ncwaterqualitu ore. 943 Washington Square Mail, Washington, NC 27889 1-877-623-6748 An Equal Opportunity)Affirmative Action Employer— 50% Recycledh 0% Post Consumer Paper State Stormwater Management Systems Permit No. SW7060819 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 Garris-Evans Lumber Company Garris-Evans Lumber Company — New Bern Site Craven County FOR THE construction, operation and maintenance of a wet detention pond in compliance with the provisions of 15A NCAC 2H .1000 (hereafter referred to as the "stormwater rules') and the approved stormwater management plans and specifications and other supporting data as attached and on file with and approved by the Division of Water Quality and considered a part of this permit. This permit shall be effective from the date of issuance until October 3, 2016, 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 1.7 on page 3 of this permit. The stormwater control has been designed to handle the runoff from 239,365 square feet of impervious area. 3. The tract will be limited to the amount of built -upon area indicated on page 3 of this permit, and per -approved plans. 4. All stormwater collection and treatment systems must be located in either dedicated common areas or recorded easements. The final plats for the project will be recorded showing all such -required easements; in accordance with the approved plans. 5. The runoff from all built -upon area within the permitted drainage area of this project must be directed into the permitted stormwater control system per approved. plans. Final plans including site layout and drainage for the "Future" area shall be J submitted and approved by the -Division prior to the construction of any of the future impervious area.. Page 2of7 State Stormwater Management Systems Permit No. SW7060819 7. The following design criteria have been provided in the wet detention pond and must be maintained at design condition: a. Drainage Area, acres: 6.81 b. Total Impervious Surfaces, ft2: 239365 (5.50ac.) c. Design Storm, inches: 1.0 d. Pond Depth, feet: 7.50 e. TSS removal efficiency: 90% f. Permanent Pool Elevation, FMSL: 23.00 g. Permanent Pool Surface Area, ft2: 10,007 h. Permanent Storage Volume, ft3:. 29,610 i. Permitted Forebay Volume, ft3: 5,472 i. Temporary Storage Elevation, FMSL: 25.10 j. Temporary Storage Volume, ft3: 24,020 k. Controlling Orifice: 1.75" � pipe I. Receiving Stream/River Basin: Brice Creek 1 Neuse M. Stream Index Number: 27-101-40-(1) n. Classification of Water Body: "C; Sw, NSW" 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. Mowinq 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 outlet structure, orifice device, flow spreader, catch basins and piping. g. Access to the outlet structure must be available at all times. Page 3 of 7 State Stormwater Management Systems Permit No. SW7060819 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. 1 The Director may notify the permittee when the permitted site does not meet one or more of the minimurxv 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. 13. This permit shall be effective from the date of issuance until October 3, 2016. 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. Page 4 of 7 State Stormwater Management Systems Permit No. SW7060819 III: GENERAL CONDITIONS 1. 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 of any name, ownership or mailing address changes within 30 days. Permit issued this the 3`d day of October, 2006. RTH YAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION -- t- ]�� for Alan W. Klimek, P.E., Director Division of Water Quality By Authority of the Environmental Management Commission Permit Number SW7060819 Page 5 of 7 State Stormwater Management Systems Permit No. SW7060819 Garris-Evans Lumber Compansy Stormwater Permit No. SW7060819 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. SW7060819 Certification Requirements: 1. The drainage area to the system contains approximately the permitted acreage. 2. The drainage area to the system contains no more than the permitted amount of built -upon area. 3. All the built -upon area associated with the project is graded such that the runoff drains to the system. 4. All roof drains are located such that the runoff is directed into the system. 5. The outlet/bypass structure elevations are per the approved plan. 6. The outlet structure is located per the approved plans. 7. Trash rack is provided on the outlet/bypass structure. 8. All slopes are grassed'with permanent vegetation. 9. Vegetated slopes are no steeper than 11. 10. The inlets are located per the approved plans and do not cause short- circuiting of the system. 11. The permitted amounts of surface area and/or volume have been provided. 12. Required drawdown devices are correctly sized per the approved plans. 13. All required design depths are provided. 14. All required parts of the system are provided, such as a vegetated shelf, and a forebay. 15. The required system dimensions are provided per the approved plans. cc: NCDENR-DWQ Regional Office Craven County Building Inspections Page 7 of 7 :OFFICE USE ONLY ' Date Received Fee Paid Permit Number a ()6081 -IS WAC-K- $ l-1-9la4P State of North Carolina Department of Environment and Natural Resources AUG " 2C,0.6 Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM t This form may be photocopied for use as an original I. GENERAL INFORMATION 1. Applicants name (specify the name of the corporation, individual, etc. who owns the project): Garris-Evans Lumber Company . 2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance): David Evans, Jr, i�2Gs�bc.�T 3. Mailing Address for person listed in item 2 above: PO Bax.vs=:5 t Z521Z Ci ty: Greenville State: NC zip:2783% Telephone Number: ( 252 ) -754 1175 4. Project Name (subdivision, facility, or establishment name - should be consistent with project name on plans, specifications, letters, operation and maintenance agreements, etc.): Garris Evans Lumber Company 5. Location of Preject (street address): near Intersection of NCSR 1121 (Garner Road) and NCSR 1113 (Old Cherry Point Road) City: New Bern County: Craven 6. Directions to project (from nearest major intersection): From Intersection of NCSR 1121 (Garner Road) and NCSR 1113 (Old Cherry Point Road) project is approximately 1000 feet on the left T Latitude: 35.05670 Longitude:-77,01980 of project 8. Contact person who can answer questions about the project: Name: Michael D. Tolson, P.E. Telephone Number: (252�752-4135-4135 II. PERMIT INFORMATION: 1. Specify whether project is (check one) 0 New 0 Renewal Modification Form SWU- 101 Version 3.99 Page 1 of 4 2. If this application is being submitted as the result of a renewal or modification to an existing permit, list the existing permit number and its issue date (if known) 3. 'SpeWi ffieltype of p'r d (check one): ❑ Low Density 0 High Density ❑ Redevelop ❑ General Permit ❑ Other 4. Additional Project Requirements (check applicable blanks): OCAMA Major QSedimentation/Erosion Control D404/401 Permit ONPDES Stormwater Information on required state permits can be obtained by contacting the Customer Service Center at 1-877-623-6748. III. PROJECT INFORMATION 1. In the space provided below, summarize how Stormwater will be treated. Also attach a detailed narrative (one to two pages) describing stormwater management for the project . The first inch of Stormwater will be collected via a storm drainage pipe network into a wet detention facility where it will be released over a period of two to five days. 2. Stormwater runoff from this project drains to the Neuse 3. Total Project Area: 7.00 acres 5. How many drainage areas does the project have? 1 River basin. 4. Project Built Upon Area: 81 % 6. Complete the following information for each drainage area. If there are more than two drainage areas in the project, attach an additional sheet with the information for each area provided in the same format as below. Basin Information Drainage Area I Drainage Area 2 Receiving Stream Name Brice Creek Receiving Stream Class C, Sw, NSW Drainage Area 6.81 Existing Impervious* Area 12,385 SF Proposed Impervious*Area 5.50 % Impervious* Area (total) 81 Impervious` Surface Area Drainage Area I Drainage Area 2 On -site Buildings 71,330 SF On -site Streets 6,650 SF On -site Parking 11,825 SF On -site Sidewalks 0 Other on -site 149,560 SF (GRAVEL) Off -site 0 Total: 239,365 SF Total: * Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas, sidewalks, gravel areas, etc. Form SWU-101 Version 3.99 Page 2 of 7. How was the off -site impervious area listed above derived? nla IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS The following italicized deed restrictions and protective covenants are required to be recorded for all., subdivisions, outparcels and future development prior to the sale of any lot. If lot sizes vary significantly, a table listing each lot number, size and the allowable built -upon area for each lot must be provided as an attachment. 1. The following covenants are intended to ensure ongoing compliance with state stormwater management permit number NIA as issued by the Division of Water Quality. These covenants may not be changed or deleted without the consent of the State. 2. No more than square feet of any lot shall be covered by structures or impervious materials. , Impervious materials include asphalt, gravel, concrete, brick, stone, slate or similar material but do not include wood decking or the water surface of swimming pools. 3. Swales shall not be filled in, piped, or altered except as necessary to provide driveway crossings. 4. Built -upon area in excess of the permitted amount requires a state stormwater management permit modification prior to construction. 5. All permitted runoff from outparcels or future development shall be directed into the permitted stormwater control system. These connections to the stormwater control system shall be performed in a manner that maintains the integrity and performance of the system as permitted. By your signature below, you certify that the recorded deed restrictions and protective covenants for this project shall include all the applicable items required above, that the covenants will be binding on all parties and persons claiming under them, that they will run with the land, that the required covenants cannot be changed or deleted. without concurrence from the State, and that they will be recorded prior to the sale of any lot. V. SUPPLEMENT FORMS The applicable state stormwater management permit supplement form(s) listed below must be submitted for each BMP specified for this project. Contact the Stormwater and General Permits Unit at (919) 733-5083 for the status and availability of these forms. Form SWU-102 Wet Detention Basin Supplement Form SWU-103 Infiltration Basin Supplement Form SWU-104 Low Density Supplement Form SWU-105 Curb Outlet System Supplement Form SWU-106 Off -Site System Supplement Form SWU-107 Underground Infiltration Trench Supplement Form SWU-108 Neuse River Basin Supplement Form SWU-109 Innovative Best Management Practice Supplement Form SWU-101 Version 3.99 Page 3 of 4 VI. SUBMITTAL REQUIREMENTS Only complete application packages will be accepted and reviewed by the Division of Water Quality (DWQ). A complete package includes all of the items listed below. The complete application package should be submitted to the appropriate DWQ Regional Office. 1. Please indicate that you have provided the following required information by initialing in the space provided next to each item. Initials • Original and one copy of the Stormwater Management Permit Application Form • One copy of the applicable Supplement Form(s) for each BMP • Permit application processing fee of $420 (payable to NCDENR) • Detailed narrative description of stormwater treatment/management • Two copies of plans and specifications, including: - Development/Project name - Engineer and firm -Legend - North arrow Scale Revision number & date - Mean high water line - Dimensioned property/project boundary - Location map with named streets or NCSR numbers - Original contours, proposed contours, spot elevations, finished floor elevations - Details of roads, drainage features, collection systems, and stormwater control measures - Wetlands delineated, or a note on plans that none exist - Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations - Drainage areas delineated - Vegetated buffers (where required) VII. AGENT AUTHORIZATION If you wish to designate authority to another individual or firm so that they may provide information on your behalf, please complete this section. Designated agent (individual or firm): Rivers and Associates Mailing Address: PO Box 929 City: Greenville Phone: ( 252 ) 752-4135 VIII. APPLICANT'S CERTIFICATION State: NC Zip: 27835 Fax: (252 ) 752-3974 I, (print or type name of person listed in General Information, item 2) David Evans, Jr. certify that the information included on this permit application form is, to the best of my knowledge, correct and that the pr will be constructed in conformance with the approved plans, that the required deed restrictions and protec ve venants will be recorded, and that the proposed project complies with the requirements of 15A NCAC 2H . 000. _ �J Signature: Date: 2 f 0 Form SWU-101 Version 3.99 Page 4 of 4 PcnnitNo. 706 0T19 (to be provided by DWQ) State of North Carolina Department of Environment and Natural Resources Division of Water Quality � I V E I-j" STORMWATER MANAGEMENT PERMIT APPLICATION'914 WET DETENTION BASIN SUPPLEMENT SEP 2 21006 This form may be photocopied for use as an original DWQ PROJ # DWQ Stormwater Management Plan Review: A complete stormwater management plan submittal includes an application form, a wet detention basin supplement for cacti basin, design calculations, and plans and specifications showing all basin and outlet structure details. 1. PROJECT INFORMATION Proicet Name: Gams -Evans Lumber Company Contact Person: Michael D. Tolson Phone Number: For projects with multiple basins, specify which basin this worksheet applies to: - elevatiozzs 752-4135 Basin Bottom Elevation 15.5 ft. (floor of The basin) Permanent Pool Elevation 23 ft. (elevation of the orifice) Temporary Pool Elevation 25.1 ft. (elevation of the discharge structure overflow) areas Permanent Pool Surface Area 10,007 sq. ft. (water surface area at the orifice elevation) Drainage Area 6.8 ac. (on -site and of -site drainage to the basin) Impervious Area 5.50 ac. (on -site arzd off -site drainage to the basin) volumes Permanent Pool V01ume 29,610 cu. ft. (combined volume of main basin and forebay) Temporary Pool Volume 24,020 cu. ft. (volume detained above the permanent pool) Forebay Volume 5,472 cu. ft. (approximately 20% of total volume) Other parameters SA/DAI 2.83 (surface cm -ea to drainage area ratio fi-om DWQ table) Diameter of Orifice 1.75 in. (2 to S day temporary pool draw -Clown required Design Rainfall 1 in. Design TSS Removal 2 90 % (ininimzum 85% required) Fomi S W U-102 Rev 3.99 Page 1 of 4 Footnotes: ' when using the Division SA/DA tables, the correct SAMA ratio for permanent pool sizing should be computed based upon the actual impervious % and permanent pool depth. Linear interpolation should be employed to determine the correct value for non- standard table entries. 2 In the 20 coastal counties, the requirement for a vegetative filter may be waived if the wet detention basin is designed to provide 90% TSS removal. The NCDENR BMP manual provides design tables for both 85% TSS removal and 90% TSS removal. 11. REQUIRED ITEMS CHECKLIST The following checklist outlines design requirements per the Stormwater Best Management Practices Manual (N.C. Department of Environment, Health and Natural Resources, February 1999) and Administrative Code Section: 15 A NCAC 2H .1008. Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If the applicant has designated an agent in the Stormwater Management Permit Application Form, the agent may initial below. If a requirement has not been met, attach justification. Applicants Initials a. b. Wl9s1 C. t1 d. 1Y% e. f. 9. h. . W M 7,� The permanent pool depth is between 3 and Yfeet (required minimum of 3 feet). The forebay volume is approximately equal to 20% of the basin volume. The temporary pool controls runoff from the design storm event. The temporary pool draws down in 2 to 5 days. If required, a 30-foot vegetative filter is provided at the outlet (include non -erosive flow calculations) The basin length to width ratio is greater than 3:1. The basin side slopes above the permanent pool are no steeper than 3:1. A submerged and vegetated perimeter shelf with a slope of 6:1 or less (show detail). Vegetative cover above the permanent pool elevation is specified. A trash rack or similar device is provided for both the overflow and orifice. A recorded drainage casement is provided for each basin including access to nearest right- of -way. 1. If the basin is used for sediment and erosion control during construction, clean out of the basin is specified prior to use as a wet detention basin. Ix in. A mechanism is specified which will drain the basin for maintenance or an emergency. 111. WET DETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT The wet detention basin system is defined as the wet detention basin, pretreatment including forebays and the vegetated filter if one is provided. This system (check one) 0 does ® does not incorporate a vegetated filter at the outlet. This system (check one) 0 does 0 does not incorporate pretreatment other than a forebay. Form SWU-102 Rev 3.99 Page 2 of 4 Maintenance activities shall be performed as follows: After every significant runoff producing rainfall event and at least monthly: a. Inspect the wet detention basin system for sediment accumulation, erosion, trash accumulation, vegetated cover, and general condition. b. Check and clear the orifice of any obstructions such that drawdown of the temporary pool occurs within 2 to 5 days as designed. 2. Repair eroded areas immediately, re -seed as necessary to maintain good vegetative cover, mow vegetative cover to maintain a maximum height of six inches, and remove trash as needed. 3. Inspect and repair the collection system (i.e. catch basins, piping, swales, riprap, ete.) quarterly to maintain proper functioning. 4. Remove accumulated sediment from the wet detention basin system semi-annually or when depth is reduced to 75% of the original design depth (see diagram below). Removed sediment shall be disposed of in an appropriate manner and shall be handled in a manner that will not adversely impact water quality (i.e. stockpiling near a wet detention basin or stream, etc.). The measuring device used to determine the sediment elevation shall be such that it will give an accurate depth reading and not readily penetrate into accut ulated sediments. ,� When the permanent pool depth reads-1-8fr feet in the main pond, the sediment shall be removed. S. 69s When the permanent pool depth reads feet in the forebay, the sediment shall be removed. BASIN DIAGRAM (Jill in the blankv) p Permanent Pool Elevation 23 Sediment R\Ele al El. 17.38 75' o t _ Sediment Removal Elevation 17.38 75% Bottomation%15.5 --------------------•-------------•------------- ------ Bottom Elevation 15.5 25% FOREBAY MAIN POND 5. Remove cattails and other indigenous wetland plants when they cover 50% of the basin surface. These plants shall be encouraged to grow along the vegetated shelf and forebay berm. 6. if the basin must be drained for an emergency or to perform maintenance, the flushing of sediment through the emergency drain shall be minimized to the maximum extent practical. Form SWU-102 Rev 3.99 Page 3 of Maintenance activities shall be performed as follows: 1. After every significant runoff producing rainfall event and at least monthly: a. Inspect the wet detention basin system for sediment accumulation, erosion, trash accumulation, vegetated cover, and general condition. b. Check and clear the orifice of any obstructions such that drawdown of the temporary pool occurs within 2 to 5 days as designed. 2. Repair eroded areas immediately, re -seed as necessary to maintain good vegetative cover, mow vegetative cover to maintain a maximum height of six inches, and remove trash as needed. 3. Inspect and repair the collection system (i.e. catch basins, piping, swales, riprap, etc.) quarterly to maintain proper functioning. 4. Remove accumulated sediment from the wet detention basin system semi-annually or when depth is reducedto�75% of the original design depth (see diagram below). Removed sediment shall be disposed of in an appropriate manner and shall be handled in a manner that will not adversely impact water quality (i.e. stockpiling near a wet detention basin or stream, etc.). The measuring device used to determine the sediment elevation shall be such that it will give an accurate depth reading and not readily penetrate 'nto accumulated sediments. as�I 9/, V When the permanent pool depth reads feet in the main pond, the sediment shall be removed. When the permanent pool depth reads feet in the forebay, the sediment shall be removed. BAST DIAGRAM 4p�✓ �� ��j1~"�" ill in he blanks) ` ' rw tl r, Permanent Pool Elevation 23 Sediment Ren oval El. 17.75 175 o -----E --- ♦♦__ Sediment Remov Elevation 17.75 75"/0 BottomEle ation 0------------------------------�-__---------- - Bottom � levation 6 25% FOREBAY� MAINPOND 5. Remove cattails and other indigenous wetland plants when they cover 50% of the basin surface. These plants shall be encouraged to grow along the vegetated shelf and forebay berm. 6. If the basin must be drained for an emergency or to perform maintenance, the flushing of sediment through the emergency drain shall be minimized to the maximum extent practical. Form SWU-102 Rev 3.99 Page 3 of "7'. '~All components of the wet detention basin system shall be maintained in good working order. I acknowledge and agree by my signature below that I am responsible for the performance of the seven maintenance procedures listed above. I agree to notify DWQ of any problems with the system or prior to any changes to the system or responsible party. Print name: Garris-Evans Lumber Company _ p Fv Title: President Address•• PO Box 3353, Greenville, NC 27835 Phone: (�52'JgU-1175 Signature; ' V Date: N ilzIlOG _ 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, :'Auc S NL(ZP , a Notary Public for the State of North Carolina County of _ PI-rK _ do hereby certify that David Evans, Jr. personally appeared before me this,._Z, 1 day of pp,&_, and acknowledge the due execution of the forgoing wet detention basin maintenance requirements. Witness my hand and official seal, u `pp11NHn1lh�� o� 4 9 7Aig1, � s b • � s SEAL My commission expires S 1 1 ZO1 D Form SWU-102 Rev 3.99 Page 4 of 4 . Compliance Inspection Report Permit: SW7060819 Effective: 10/03/06 Expiration: 10/03/20 Owner: Garris-Evans Lumber Company Project: Garris Evans Lumber Company - Express County: Craven Garner Rd Old Cherry Point Rd Region: Washington New Bern NC 28560 Contact Person: David Evans Title: Phone: Directions to Project: From intersect of NCSR 1121 (Garner Rd) and NCSR 1113 (Old Cherry Point Rd) project is approx 1000' on the left Type of Project: State Stormwater - HD - Detention Pond Drain Areas: 1 - (Brice Creek) (03-04-10) ( C;Sw,NSW) On -Site Representative(s): Related Permits: Inspection Date: 08/23/2012 Entry Time: 03:15 PM Primary Inspector: Scott A Vinson Secondary Inspector(s): Reason for Inspection: Complaint Permit Inspection Type: State Stormwater Facility Status: ■ Compliant ❑ Not Compliant Question Areas: 0 State Stormwater (See attachment summary) Exit Time: 04:00 PM Phone: 252-946-6481 Ext.208 Inspection Type: Compliance Evaluation Page: 1 Permit: SW7060819 Owner - Project: Garris-Evans Lumber Company Inspection Date: 08/23/2012 Inspection Type: Compliance Evaluation Reason for Visit: Complaint Inspection Summary: Visited site in response to flooding/drainage complaint from neighbor of lumber site. All aspects of the State Stormwater permit and approved plans appear to be in compliance. It had rained on the day of inspection and was drizzling during the site visit. The neighbor's yard did not have standing water at the time of the visit, however there was water in the NCDOT right of way ditch running in front of property approximately 9-12 inches deep, flowing northeast down Garner Rd. towards and under Old Cherry Point Rd. prior to draining into the Neuse River. Page: 2