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HomeMy WebLinkAboutSW8040522_CURRENT PERMIT_20040603STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO. SW��C�a% DOC TYPE � CURRENT PERMIT ❑ APPROVED PLANS ❑ HISTORICAL FILE ❑ COMPLIANCE EVALUATION INSPECTION DOC DATE �'t1Zi/�iBB 3 YYYYMMDD + F WArF ",licnael =. Easley, Governor p William G. Ross Jr., 5eaetary , North Carolina Department of Environment and Natural Resources r .tan W. Ydimek, P.E.,Director -� Division of Water Quality Coleen H. 5uilins, Deputy Director Division of Water Quality June 3, 2004 Mr. Stephen D. Saieed The Pavilion at Carolina Beach, LLC 1135 Military Cutoff Road, Suite 201 Wilmington, NC 28405 Subject: Permit No. SWS O40522 The Pavilion at Carolina Beach High Density Stormwater Project New Hanover County Dear Mr. Saieed: The Wilmington Regional Office received a complete Stormwater Management Permit Application for The Pavilion at Carolina Beach on June 3, 2004. 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. SWS 040522 dated June 3, 2004, for the construction of The Pavilion at Carolina Beach. This permit shall be effective from the date of issuance until June 3, 2014, 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. Drawer27447, 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 Laurie Munn, or me at (910) 395-3900. Sincerely, r- , ` w4-- Rick Shiver Water Quality Regional Supen•isor RSS/:lsrh S:\1VQSISTORMWATIPERMM040522.jun04 cc: Phil Norris, P.E. New Hanover County Building Inspections Laurie Munn Wilmington Regional Office Central Files N. C. Division of Water Quality 127 Cardinal Drive Extension (910) 395-3900 Custcmer 5er,ic4a Wilmington Regional office Wilmington, NC 28;05 (910) 350-2004 Fax 1 800 623-7723 NCDENR State Stormwater Management Systems Permit No. SW8 040522 STATE OF NORTH CAROLIN A DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF WATER QUALITY STATE STORVIWATER NIANAGENIENT PER UT 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 The Pavilion at Carolina Beach, LLC The Pavilion at Carolina Beach iVew Hanover Countv FOR THE construction, operation and maintenance of an infiltration trench system in compliance with the provisions of 15A NCAC 2H A000 (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 .Tune 3, 2014, and shall be subject to the following specified conditions and limitations: I. DESIGN STANDARDS I . This permit is effective only with respect to the nature and volume of stormwater described in the application and other supporting data. 2. This stormwater system has been approved for the management of stormwater runoff as described on page 3 of this permit, the Project Data Sheet. The stormwater control has been designed to handle the runoff from 95,970 square feet of impervious area. I 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. a. The runoff from all built -upon area within the permitted drainage area of this project must be directed into the permitted stormwater control system. A permit modification must be submitted and approved prior to the construction of additional built -upon area from outside of the approved drainage area. State Stormwater Management Systems Permit No. SW8 040522 DIVISION OF WATER QUALITY PROJECT DESIGN DATA SHEET Project Name: The Pavilion at Carolina Beach Permit Number: SW8 040522 Location: New Hanover County Applicant: Mr. Stephen D. Saieed '0aihna Address: The Pavilion at Carolina Beach, LLC 1135 Military Cutoff Road, Suite 20I Wilmington, NC 28405 Application Date: June 3, 2004 Receiving Stream/River Basin: Snows Cut / Cape Fear Stream Index Number: 18-87-31.5 Classification of Water Body: "SC" T Drainage Area, acres: 2.74 Onsite, sq. ft.: 119,354 Offsite, sq. ft.: none Total Impervious Surfaces, sq. ft.: 95,970 Design Storm: 2.0" Trench Dimensions, LxWxH/Pipe Dia.: 1,258' x 7.15' x 3.5'/30" Required Storage Volume, ft3: 16,775 ProVided Storage Volume, ft'., 16,825 Bottom Elevation, FMSL: 21.70 Temporary Storage Elevation, FMSL: 25.20 T,,pe of Soil: Sand Time to Drawdown, hours: 2 Seasonal High Water Table, FMSL: 18.0 State Stormwater Management Systems Permit No. SWS O40522 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_ ?. During construction, erosion shall be kept to a minimum and any eroded areas of the system will be repaired immediately. 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. Mowiniz 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. Cr Access to the outlet structure must be available at all times. 1. 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. 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 in 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. S. 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, 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 CAMIA Major permit was sought. f. Filling in, altering, or piping of any vegetative convevance shown on the approved plan. 4 State Stormwater Management Systems Permit No. SW8 040522 9. The permittee shall submit final site layout and grading plans for any permitted future areas shown on the approved plans, prior to construction. If the proposed BUA exceeds the amount permitted under this permit, a modification to the permit must be submitted and approved prior to construction. 10. 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. 11. At least 30 days prior to the sale or lease of any portion of the property, the permittee shall notify DWQ and provide the name, mailing address and phone number of the purchaser or lessee. An access/maintenance easement to the stormwater facilities shall be granted in favor of the permittee if access to the stormwater facilities will be restricted by the sale or lease of any portion of the property. 12. The permittee must maintain compliance with the proposed built -upon area and ensure that the runoff from all the built -upon is directed into the permitted system. 13. 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. 14. The permittee must maintain the current permitted drainage area. No additional runoff from- outside of the permitted drainage area boundary may enter the permitted stormwater facilities without first applying for and receiving a permit modification. III. GENERAL CONDITIONS l . 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) which have jurisdiction. 4. In the event that the facilities fail to perform satisfactorily, including the creation of nuisance conditions, the Permittee shall take immediate corrective action, including those as may be required by this Division, such as the construction of additional or replacement stormwater management systems. 5. The permittee grants DENR Staff permission to enter the property 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. State Stormwater Management Systems Permit'No. SWS O40522 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. S. Approved plans and specifications for this project are incorporated by reference and are enforceable parts of the permit. 9. The permittee shall notify the Division any name, ownership or mailing address changes within 30 days. Permit issued this the 3rd day of June 2004. NORTH CAROLENA ENVIRONMENTAL MANAGEMENT COMMISSION At-6), -0 /6 gzl` an. Klimek, P.E., Director 4VI Division of Water Quality By Authority of the Environmental Management Commission 6 State Storrnwater Management Systems Permit No. SW8 040522 The Pavilion at Carolina Beach Stormwater Permit No_ SW8 040522 New Hanover County Designer's Certification 1, , as a duly registered in the State of North Carolina, having been authorized to observe (periodically/weekly/full time) the construction of the project, (Project) for (Project Owner) hereby state that, to the best of my abilities, due care and diligence was used in the observation of the project construction such that the construction was observed to be built within substantial compliance and intent of the approved plans and specifications. The checklist of items on page 2 of this form is included in the Certification. Noted deviations from approved plans and specification: SEAL Signature Registration Number Date State Stormwater Management Systems Permit No. SW8 040522 Certification Requirements: 1. The drainage area to the system contains approximately the permitted acreage. ?. The drainage area to the system contains no more than the permitted amount of built -upon area. 3. AlI the built -upon area associated with the project is graded such that the runoff drains to the system. 4. The outletibypass structure elevations are per the approved plan. 5. The outlet structure is located per the approved plans. b. Trash rack is provided on the outlet/bypass structure. 7. All slopes are grassed with permanent vegetation. 8. Vegetated slopes are no steeper than 3:1. 9. The inlets are located per the approved plans and do not cause short-circuiting of the system. 10. The permitted amounts of surface area and/or volume have been provided. 11. Required drawdown devices are correctly sized per the approved plans. 12. All required design depths are provided. 13. All required parts of the system are provided, such as a vegetated shelf, and a forebay. 14. The overall dimensions of the system, as shown on the approved plans, are provided. cc: NCDENR-DWQ Regional Office New Hanover County Building Inspections S A&K #04032 mate Received Fee Paid Permit Number o 1 Ll000 SU o State of North Carolina Department of Environment and Natural Resources Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM This form may be photocopied for use as an original I. GENERAL INFORMATION 1. Applicants name (specify the name of the corporation, individual, etc, who owns the project): The Pavilion at Carolina Beach, LLC 2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance): Stephen D. Saieed, Managing Partner 3. Mailing Address for person listed in item 2 above: 1135 Military Cutoff Rd., Suite 201 _ City: Wilmington _ State: NC Zip: 28405 Telephone Number: (910) 509-1696 4. Project Name (subdivision, facility, or establishment name — should be consistent with project name on plans, specifications, letters, operation and maintenance agreements, etc.): The Pavilion at Carolina Beach 5. Location of Project (street address): US Hwy. 421 City: Carolina Beach County: New Hanover 6. Directions to project (from nearest major intersection): At Monkey Junction (intersection of US 421 & NC 132) take US 421 to go across the Snows Cut Bridge. Site is on the left on US 421 between Lewis Drive & Risley Rd. 7. Latitude: 340 03' 12" Longitude: 7705315911 of project 8. Contact person who can answer questions about the project: Name: Phil Norris, P.E. Telephone Number: 910 343-9653 II. PERMIT INFORMATION I. Specify whether project is (check one): X New Form SWU-101 Version 3.99 Page 1 of 4 Renewal Modification 2. If this application is being submitted as the result of a renewal or modification to an existing permit, list the Existing permit number NIA And its issue date (if known) NIA 3. Specify the type of project (check one): Low Density X High Density Redevelop General Permit Other 4. Additional Project Requirements (check applicable blanks): CAMA Major X Sedimentation/Erosion Control 404/401 Permit NPDES Stormwater Information on required state permits can be obtained by contacting the Customer Service Center at 1-877-623-6748. 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. Infiltration System 2. Stormwater runoff from this project drains to the 3. Total Project Area: 2.74 AC Cape Fear River Basin. 4. Project Built Upon Area: 80.4 5. How many drainage areas does the project have? 2 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. N-31 31.5 Basin lnformation F - _ Drainage Area I Drainage Area 2 Receiving Stream Name UT Snows Cut Receiving Stream Class S Drainage Area 119,354 SF 12.74 AC Existing Impervious * Area 0 Pro osed Impervious* Area 95,970 SF 12.203 AC % Impervious* Area (total) 80.4% Impervious* Surface -A-re-a-.T t T - Draina e.Area 1 T ✓ f Draina e Area 2 .� On -site Buildings 27,660 SF 10.635 AC On -site Streets 0 On -site Parking 67,960 SF 1 1.560 AC On -site Sidewalks 350 SF / 0.008 AC Other on -site 0 Off -site 0 Total: 95,970 SF 12.203 AC 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 4 • 7. How was the off -site impervious area listed above derived? N/, 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. The following covenants are intended to ensure ongoing compliance with state stormwater management permit number as issued by the Division of Water Quality. These covenants may not be changed or deleted without the consent of the .State. No more than 95,970 square feet ofany 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, piper, 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. 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 sate 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 S� j • One copy of the applicable supplement form(s) for each BMPj r • Permit application processing fee of $420 (payable to NCDENR) ��Al • Detailed narrative description of stormwater treatment 1 management Spr • Two copies of plans and specifications, including: e„�r - 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 - 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) V1I. 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. J. Phillip Norris, P.E. Designated agent (individual or firm): Andrew & Kuske Consulting Engineers, Inc. Mailing Address: 902 Market Street City: Wilmington State: NC Zip: 28401 Phone: (910) 343-9653 Fax: (910) 343-9604 VHI. APPLICANT'S CERTIFICATION 1, (print or type name ofperson listed in General Information, item 2) Stephen D. Saieed, Managing Partner , Certify that the information included on this permit application form is, to the best of my knowledge, correct and that the project will be constructed in conformance with the approved plans, that the required deed restrictions and protective covenapts will bar orded, and that the proposed project complies with the requirements of 1 SA NCAC 2 H.1000. 1 Signature: Form SWU-101 Version 3.99 Page 4 of 4 Date: A&K #04032 Permit No. SW V D AID 5a.2, State of North Carolina (to be provided by DWQ) Department of Environment and Natural Resources Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM UNDERGROUND INFILTRATION TRENCH SUPPLEMENT This form may be photocopied for use as an original DWO Stormwater Management Plan Review: A complete stormwater management plan submittal includes a stormwater management permit application, an underground trench supplement for each system, design calculations, and plans and specifications showing all stormwater conveyances and system details. I. PROJECT INFORMATION Project Name: The Pavilion at Carolina Beach Contact Person: Phil Norris, P.E. Phone Number: (910) 343-9653 For projects with multiple infiltration systems, a supplement form must be completed for each system. This worksheet applies to: Trench 1 in Drainage Area 1 )rrom plans) (from Form SWU-101) n• DESIGN INFORMATION (attach supporting calculations/documentation); Soils Report Summary (based upon an actual field investigation and soil borings) Soil Type Sand Infiltration Rate 83.4 Nin/hr or Dcf/hr/sf (check appropriate units) SHWT Elevation Below 18.00 fmsl (Seasonal High Water Table elevation) Trench Design Parameters Design Volume Design Storm Drawdown Time Perforated Pipe Size Perforated Pipe Length No. Observation Wells Stone Type (if used) Stone Void Ratio 16,775 c.f. 2.0 inch event 0.08 days 30 inch diameter 1,258 ft. (1.5 inch event for SA waters, 1 inch event far others) 0 (may be required on a case —by-case basis) Washed Stone n d Trench Elevations (in feet mean seal level) Bottom Elevation 21.70 fmsl Storage/Overflow Elevation 26.2 fmsl Form SWU-107 Version 3.99 Page I of Trench Dimensions Height Width 3.5 ft. Length 1.258 ft. 7.15 ft. Volume Provided 16,825 cu.ft. 111. 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. System is located 50 feet from class SA waters and 30 feet from other surface waters. _ b. System is located at least 100 feet from water supply wells. c. Bottom of system is at least 2 feet above the seasonal high water table. SPZ d. Bottom of the system is 3 feet above any bedrock or impervious soil horizon. NIA e. Off-line system, runoff in excess of the design volume bypasses the system (bypass detail provided). ,tt 0( lt*' v1 Cive*ty f. System is designed to draw down the design storage volume to the proposed bottom elevation under seasonal high water conditions within five days based upon infiltration through the bottom only (a hydrogeologic evaluation may be required). SMg. Soils have a minimum hydraulic conductivity of 0.52 inches per hour. h. System is not sited on or in fill material or DWQ approval has been obtained. T5f Sf i. Plans ensure that the installed system will meet design specifications (constructed or restored) upon initial operation once the project is complete and the entire drainage area is stabilized. SQ j. System is sized to take into account the runoff at the ultimate built -out potential from all D surfaces draining to the system, including any off -site drainage. SDf k. System is located in a recorded drainage easement for the purposes of operation and maintenance and has recorded access easements to the nearest public right-of-way. I. System capture and infiltrates the runoff from the first 1.0 inch of rainfall (1.5 inch event for areas draining to SA waters). c(!f m. Drainage area for the device is less than 5 acres. n. A pretreatment device (filter strip, grassed swale, sediment trap, etc.) is provided. o. Trench bottom is covered with a layer of clean sand to an average depth of 4 inches. p. Sides of the infiltration trench are lined with geotextile fabric. q. Rock used is free of fines (washed stone) and has a large void ratio. Side to bottom area ratio is less than 4:1. Form SWU-107 Version 3.99 Page 2 of 4 t NIA NIA s. Observation well(s) are provided (case -by -case basis). t. Vegetated filter is provided for overflow (50 feet for SA waters, 30 feet for other waters) and detail is shown on plans. u. A benchmark for checking sediment accumulation is provided. IV. INFILTRATION BASIN OPERATION AND MAINTENANCE AGREEMENT l . After every runoff producing rainfall event and at least monthly inspect the bypass/overflow structure for blockage and deterioration and the infiltration system for erosion, trash accumulation, grass cover, and general condition. 2. Repair eroded areas immediately, re -seed as necessary to maintain adequate vegetative cover, mow vegetated cover to maintain a maximum height of six -inches, and remove trash as needed. 3. Remove accumulated sediment annually or when depth is reduced to 75% of the original design depth. Restore depth to original design depth without over -excavating. Over -excavating may cause the required water table separation to be reduced and may compromise the ability of the system to perform as designed. 4. The water level in any monitoring wells will be recorded after a I inch rainfall event and at least once a month. Chronic high water table elevations (within I foot of the bottom of the system for a period of three months) shall be reported to DWQ immediately. 5. if DWQ determines that the system is failing, the system will immediately be repaired or replaced to original design specifications. If the system cannot be repaired to perform its design function, other stormwater control devices as allowed by NCAC 2H .1000 must be designed, approved and constructed. 6. Remove accumulated sediment from the infiltration system annually or when depth in the unit is reduced to 75% of the original design depth. The system shall be restored to the original design depth without over -excavating. Over excavating may cause the required water table separation to be reduced and may compromise the ability of the system to perform as designed. Removed sediment shall be disposed of in an appropriate manner and shall not be handled in a manner that will adversely impact water quality (i.e. stockpiling near a stormwater treatment device or stream, etc.). A benchmark shall be established in the infiltration system. The benchmark will document the original design depth so that accurate sediment accumulation readings can be taken. The measuring device used to determine the depth at the benchmark shall be such that it will give an accurate depth reading and not readily penetrate into accumulated sediments. When the depth at the benchmark reads 3.62 FT* , the accumulated sediment shall be removed from the system. * Benchmark is top of inlet #1. Form SWU-107 Version 3.99 Page 3 of I acknowledge and agree by my signature below that I am responsible for maintaining the stormwater collection system in accordance with 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: Stephen D. Saieed, Managing Partner Address: 1135 Militpiry Cutoff Rd., Suite 201 Wilmington, NC 28405 Phone: 91 Signature: Date: S o 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. a Notary Public for the State of NOrA-V\ CCx.(Ai YACounty of �QatJ 1T[c>-`(64krr , do hereby certify that +fit( Q�� t.��C� personally appeared before me this ac °day of —MCIa , and acknowledge the due execution of the foregoing infiltration ba j�ltff� Hn-4w a require ents. Witness my hand and official seal. SI At ••,yc� �''s I commission expires 0)Ck C h aa, a�J "SigrMt�r�q _ rn �•` GQLIC �'/'• '_, O'• r �i Y ••r'r l••• �� /� /�� I11 11117111j1 / Form SWU-I07 Version 3.99 Page 4 of c .� ;_ Andrew & Kuske CONSULTING ENGINEERS, INC. _ 902 Mork et Street VVilrninyton, NC 28401-4733 910/343-%53 9101343-96C0 Fax w,.,(v e.anctrewarxikuskc.com TO: Linda Lewis, Environmental Engineer NC DENR/Division of Environmental Management Water Quality Section 127 Cardinal Drive Extension Wilmington, NC 29405-3845 RE: The Pavilion at Carolina Beach Carolina Beach, NC A&K Project No. 04032 Engineer's Certification John R. Andrew, P.E. J. Phillip Norris, P.E. John S. Tunstall. P.E. Neal W. Andrew, P.E. John A. Kuske, 111, P.E. J.A. Kuske, P.E. of Counsel James T. Ryrtle, P.E. C. Lawrence Sneeden, Jr., P.E. State Stormwater Management Systems Permit No S W 8 040522 FM,4Y 0 5 9nn5 BY: I, J. Phillip Norris, P.E. , as a duly registered Professional Engineer in the State of North Carolina, having been authorized to observe (periodically, weekly, fW! fifne) the construction of the project, The Pavilion at Carolina Beach (Project), for The Pavilion at Carolina Beach, LLC (Project Owner) hereby state that, to the best of my abilities, due care and diligence were 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. Required items to be checked for this certification to be considered complete are on page 2 of this form. Noted deviations from approved plan�pA,;pecifications: 0 �►► CgROI� JPN/asn :�•' ••• E5S•j�• s 04032 05-03-05-s-sw-cert. • y t ` F C-D ` .•��: Signature ,,p MGl N Registration No. 11966 Date May 3, 2005 cc: Tony Roberts, New Hanover County Building Inspector Dick Hurst 1 Saieed Construction Mike Davis / Saieed Construction SEAL Certification Requirements: ALIThe drainage area to the system contains approximately the permitted acreage. The drainage area to the system contains no more than the permitted amount of built -upon area. All the built -upon area associated with the project is graded such that the runoff drains to the system. �✓ - 4. The outlet/bypass structure elevations are per the approved plan. The outlet structure is located per the approved plans. �A 6. Trash rack is provided on the outletibypass structure. slopes are grassed with permanent vegetation. slopes are no steeper than 3:1. inlets are located per the approved plans and do not cause short-circuiting of the system. permitted amounts of surface area and/or volume have been provided. drawdown devices are correctly sized per the approved plans. All required design depths are provided. ;4�Al_q 3. All required parts of the system are provided, such as vegetated shelf, and a forebay. k 4. veFall dimensions of the system, as shown on the approved plans, are provided. cc: Tony Roberts, New Hanover County Building Inspector Dick Hurst 1 Saieed Construction Mike Davis / Saieed Construction