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HomeMy WebLinkAboutSW8040522_HISTORICAL FILE_20170817STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO. SW HOC TYPE ❑ CURRENT PERMIT ❑ APPROVED PLANS HISTORICAL FILE ❑ COMPLIANCE EVALUATION INSPECTION DOC DATE 11W708"I7 YYYYMMDD STATE OF A ni CAl"aws Depart:ept of! Vie, $a a 4 Na Reso Ps 72F wow ca of z as Ii,E 9C'z:ESa R CORD y G�ei�� fr acces<_ ��le �a�of �i%�or, Re�L�! 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Ties Who S O or mote ca.R. he iuyoiced fur you: cunt �ience . :. nT 1 N L bg $LPT LY ORDER YOU r: l MI r' F:IAs may aoL bV ta�,I-L koz, To i?l LOv y �,BT. e�?t`'� 'y uPT1lOr deS�iG�' �ttsden c�no� fa - vaich you am c had up o $500.00. Ito bijd aSes_, etc. are - uermifLd in the Q revievz area- �. In. aoc��ance v�'L �. G�:er� �aL:e 25��-5i�; a $is.00-�,ocessmg l.e�i�� he eh�� aad cCilected.r caeck� eIi �yLzcbaioat hag'teen refLseci. WMAXSAME ef, PIr, �b 3. ------------------------------------------------------- Please �?ta�.�s a busi�s�s.; cry � to iF:s ja�Rz COPIBS U'DE _ PAIM ANAR; awns; Cali-Nly -1 _a(g S.-oo Fime Its Time Od DIV CE UM NOTICE TO REGISTERED AGENT: Under N.C.G.S. Section 5513-30(b), it is the duty of the registered agent to forward this certificate to the business entity at the last known address. Terry Quinn The Pavilion at Carolina Beach, LLC (0718329) PO Box 1050 Wrightsville Beach, NC 28480 State of North Carolina Department of the Secretary of State CF Rur, ICATE OF A.ANIUNISTRATIVE, 1)1SSOLtiTIONN I, Elaine F. Marshall, Secretary of State, as mandated by law; do hereby certify that The Pavilion at Carolina Beach, IILC has been administratively dissolved pursuant to the procedure set forth in N.C_G.S_ Section 57C-6-03 for failure to file an annual report effective as of the date set forth hereunder. A Limited Liability Company administratively dissolved under IN.C.G.S. Section 57C-6-03 may apply to the Secretary of State for reinstatement by complying with the procedure set forth in the \'.C.G.S. Section 57C-6-03. This the 23rd day of May, 2013 Elaine F. Marshall Secretary of State Document Id: C201314315515 State Stormwater Management Systems Permit No. SW8 040522 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 The Pavilion at Carolina Beach, LLC The Pavilion at Carolina Beach New Hanover County FOR THE construction, operation and maintenance of an infiltration trench system 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 June 3, 2014, and shall be subject to the following specified conditions and limitations: I. DESIGN STANDARDS l . 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. 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. A permit modification must be submitted and approved prior to the construction of additional built -upon area from outside of the approved drainage area. 2 State Stormwater Management Systems Permit No. SW8 040522 DIVISION OF WATER QUALITY PROJECT DESIGN DATA SHEET Project Name: Permit Number: Location: Applicant: Mailing Address: Application Date: Receiving Stream/River Basin: Stream Index Number: Classification of Water Body: Drainage Area, acres: Onsite, sq. ft.: Offsite, sq. ft.: Total Impervious Surfaces, sq. I1.: Design Storm: Trench Dimensions, LxWxH/Pipe Dia.: Required Storage Volume, ft': Provided Storage Volume, ft3: Bottom Elevation, FMSL: Temporary Storage Elevation, FMSL: Type of Soil: Time to Drawdown, hours: Seasonal High Water Table, FMSL: The Pavilion at Carolina Beach SW8 040522 New Hanover County Mr. Stephen D. Saieed The Pavilion at Carolina Beach, LLC 1135 Military Cutoff Road, Suite 201 Wilmington, NC 28405 June 3, 2004 Snows Cut / Cape Fear 18-87-31.5 "SC" 2.74 119,354 none 95,970 2.0" 1,258' x 7.15' x 3.5'/30" 16,775 16,825 21.70 25.20 Sand 2 18.0 9a J State Stormwater Management Systems Permit No. SW$ 040522 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 b 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 outlet structure, orifice device, flow spreader, catch basins and piping. g. Access to the outlet structure must be available at all times. 4. Records of maintenance activities must be kept and made available upon request to authorized personnel of DWQ. The records will indicate the date, activity, name of person performing the work and what actions were taken. 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. b. 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. 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 CAMA Major permit was sought. £ Filling in, altering, or piping of any vegetative conveyance shown on the approved plan. 0 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 13UA 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 leasee. 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. 1QI. GENERAL CONDITIONS This permit is not transferable except after notice to and approval by the Director. In the event of a change of ownership, or a name change, the permittee must submit a formal permit transfer request to the Division of Water Quality, accompanied by a completed name/ownership change form, documentation from the parties involved, and other supporting materials as may be appropriate. The approval of this request will be considered on its merits and may or may not be approved. The permittee is responsible for compliance with all permit conditions until such time as the Division approves the transfer request. 2. Failure to abide by the conditions and limitations contained in this permit may subject the Permittee to enforcement action by the Division of Water Quality, in accordance with North Carolina General Statute 143-215.6A to 143-215.6C. 3. The issuance of this permit does not preclude the Permittee from complying with any and all statutes, rules, regulations, or ordinances which may be imposed by other government agencies (local, state, and federal) 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. SW8 040522 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. 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 CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION c z Alan W. Klimek, P.E., Director Division of Water Quality By Authority of the Environmental Management Commission Cl State Stormwater Management Systems Permit No. SW8 040522 The Pavilion at Carolina Beach Stormwater Permit No. SW8 040522 New Hanover 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 eject 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. 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. The outletlbypass structure elevations are per the approved plan. 5. The outlet structure is located per the approved plans. 6. 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 NORRIS, KUSKE & TUNSTALL CONSULTING ENGINEERS, INC. 902 MARKET STREET • WILMINGTON, NC 28401 PHONE (910) 343-9653 • FAX (910) 343-9604 June 1, 2004 Ms. Laurie Munn NC DENR Division of Water Quality Water Quality Section 127 Cardinal Drive Extension Wilmington, NC 28405-3845 Re: The Pavilion at Carolina Beach New Hanover County Project No. SW8 040522 Additional Information NKT Project No. 04032 Dear Ms. Munn: We are responding to your letter of May 27, 2004 as follows- 1 . The building has been dimensioned. 2. The infiltration trench detail has been corrected. J. PHILLIP NORRIS, P.E. JOHN A. KuSKE, RI, P.E. JOHN S. TUNSTALL, P.E. J.A. KUSKF, P.E. OF COUNSEL We are enclosing two (2) sets of revised drawings for your continued review and approval. Please contact us if you have any questions or comments. Thank you for your assistance on this project. Sincerely, NORRIS, KUSKE, & TUNSTALL CONSULTING ENGINEERS, INC. (� ��ulk 1 V l"� J. hillip Norris, P.E. 6 JPNlasn 04032 06-01-04-s-sw response -fir cc: Steve Saieed W A 9pG Michael F. Easley, Govemor William G. Ross Jr.. Secretary North Carolina Department of Environment and Natural Resources r Alan W. Klimek, P.E.,Director Division of Water Quality Coleen H. Sullins, Deputy Director Division of Water Quality May 27, 2004 Mr. Stephen D. Saieed The Pavilion at Carolina Beach, LLC 1135 Military Cutoff Road, Suite 201 Wilmington, NC 28403 Subject: REQUEST FOR ADDITIONAL INFORliATION Stormwater Project No. SW8 040522 The Pavilion at Carolina Beach New Hanover County Dear Mr. Saieed: The Wilmington Regional Office received a Stormwater Management Permit Application for The Pavilion at Carolina Beach on May 25, 2004. A preliminary rexiew of that information has determined that the application is not complete. The following information is needed to continue the stormwater review: Please dimension the building. 2. Please revise the infiltration trench detail. The top elevation of the rock bed is incorrectly labeled. Please note that this request for additional information is in response to a preliminary review. The requested information should be received by this Office prior to June 3, 2004, or the application will be returned as incomplete. The return of a project Aiil necessitate resubmittal of all required items, including the application fee. If you need additional time to submit the information, please mail or fax your request for a time extension to the Division at the address and fax number at the bottom of this letter. The request must indicate the date by which you expect to submit the required information. The Di-Osion is allowed 90 days from the receipt of a completed application to issue the pernvt. The construction of any imperious surfaces, other than a construction entrance under an approved Sedimentation Erosion Control Plan, is a violation of NCGS 143-215.1 and is subject to enforcement action pursuant to NCGS 143-215.6A. Please reference the State assigned project number on all correspondence. Any original documents that need to be revised have been sent to the engineer or agent. All original documents must be returned or new originals must be provided. Copies are not acceptable. If you have any questions concerning this matter please feel free to call me at (910) 395-3900. Sincerely, (::- J, - Laurie Munn Environmental Engineer RSSl:lsm S:1«'QSISTORMWATIADDLN"F0120041040522.ma),04.doc cc: Laurie Munn Phil Norris N. C. Division of Water Quality 127 Cardinal Drive Extension (910) 395-3900 Wilmington Regional Office Wilmington, NC 28405 (910) 350-2004 Fax Customer Service 1 800 623-7748 P. 1 i FILE MODE _ 112 MEMORY TX COMMUNICATION RESULT REPORT ( MAY.28.2004 8 11AM ) TTI NCDENR WIRO OPTION ADDRESS (GROUP) RESULT ---PAGE —-- —------------- 9--3439604 OK I ---------------------------- REASON FOR ERROR E-2) BUSY E-1) HANG UP OR LINE FAIL E-4) NO FACSIMILE CONNECTION E-3) NO ANSWER State.of North Carolina Department of Environment and Natural Resources Wilmington Regional Office Michael F. Easley, Governor William G. Ross Jr., Secretary FAX COVER SHEET Dater py To: PkLi h4Y-" CO: FAX #: N S --2�0 Wit_ REMARKS: No. Of Pages:` From: La� i1/1. n FAX#: 910-350-2004 127 CgrdinaT Drive Exteeslon, Wilmington, N.C. 78405.3845 Trlcphane (910) 395-3900 Fox 010) 350-1004 . An Equal Ohpartunky Affirmative Ac[ian Employer State.of North Carolina Department of Environment and Natural Resources Wilmington Regional Office . Michael F. Easley, Governor William G. Ross Jr., Secretary FAX COVER SHEET Date: No. Of Pacres: cz To.: 'P)-\kl NY-" From: (aakl t A/t k n n-- CO: CO: FAX #: 3 3 -1�(v4 Li FAX#: 910-350-2004 REMARKS: 127 Cardinal Drive Extension, Wilmington, N.C. 28405-3845 Telephone (910) 395-3900 Fax (910) 350-2004 An Equal opportunity Affirmative Action Emptoyer 5w r 0(40s� Andrew & Kuske CONSULTING ENGINEERS, INC. 902 Market Street Wilmington, NC 28401-4733 910/343-9653 910/343-9604 Fax www,andrewandkuske.com May 24, 2004 Ms. Laurie Munn, Environmental Engineer NC DENR Division of Water Quality 127 Cardinal Drive Extension Wilmington, NC 28405-3845 John R. Andrew, P.E. J. Phillip Norris, P.E. John S. Tunstall, RE. Neal W. Andrew, P.E. John A. Kuske, III, P.E. J.A. Kuske, P.E. of Counsel James T. Pyrtle. P.E. C. Lawrence Sneeden, Jr., P.E. Re: State Stormwater Express Permit Submittal The Pavilion at Carolina Beach Carolina Beach, NC A&K Project No. 04032 Dear Ms. Munn: Enclosed are two (2) sets of plans for the subject project, one (1) set of calculations, one (1) copy of the Soils Report by S&ME, Inc., the original Division of Water Quality Stormwater Management Permit application, the original SWU- 107 supplement form, one (1) copy of the stormwater narrative and a $4,000.00 check for the express permit review fee. Please review this information for approval and contact us with any questions or comments you may have. Thank you for your assistance on this project. Sincerely, ANDREW & KUSKE CONSULTING ENGINEERS, INC. J. P Ilip Norr4;Ds,.E JPN/asn 04032 05-24-04-s-sw express-Itr Enclosures cc: Cameron Weaver / NC DENR Express Division Stephen Saieed / The Pavilion at Carolina Beach, LLC MAY-12-04 lG:OI PROM:ra&ME WILMINGTON ID=910799995B PAGE 1/4 • May 11, 2004 Pavilion at Carolina Beach. LLC 1135 Military Cutoff Road, Suite 201 WilrniVon, North Carolina 28405 Attention: Mr, Steve Saieed Reference: Double Ring Infiltrometer Testing The Pavilion at Carolina Beach Carolina Beach, North Carolina Job No. 1061-04-210 Dear Mr. Saieed: As requested, S&NM personnel have recently conducted double -ring iu filtrometer testing of the surf cial soils at the subject site at the approximate location shown inai Figure 1. Specifically, our representatives performed the following work items on May 4, 2004: 1. Advanced three hand -angered borings across the site in order to visually classify the in -place soils. A Munsell Soil Color Chart was used to define the hue and chroma of the recovered soil samples_ 2. Conducted one double -ring infiltrometer test at a depth of 7 inches below the existing ground surface. This testing was conducted in general accordance with American Society for Testing and Materials (ASTN1) procedure D-3385 entitled, "Infiltration Rate of Soils in Field Using Double -Ring Infiltrometer'. Based on our field classifications of the excavated soils at the hand -angered boring locations, the iza- place soils consist of clean sands or slightly silty sand which extended to the completed boring depth of 96 inches below the existing ground surface. Cemented sands (known locally as hardpan) were noted at Location 1 from a depth of about 50 inches to the completed boric depth of 96 inches. No water was encountered in any of the boreholes- The site water level will fluctuate with climatic and seasonal conditions, however, and may be higher or lower at other times of the year_ It is our opinion that the depth to the seasonal high water table exceeds four feet below the existing grouzad surface. S&ME, Inc. (9101 799-99d5 6409 Amsterdam Way, Building B3 (9101 799-9958 Fox Wilmington, North Carolina 28do5 w%tirv.sr,-ccirc.corn MAY-12-04 16:01 FROM:S&ME WILMINGTON iD:91079999513 PAGE 2/4 Pavilion at Carolina Beach, LLC S&ME .lob Number 1061-04-210 May 11, 2004 Pace Two The average infiltration rate at the test location was approximately 83 inches per hour. A surnrnary of the field test results is presented in Table 1. S&ME appreciates the opportunity to provide our services during this phase of the project. Should you have any questions after reviewing this letter; or if we can be of additional assistance, please do not hesitate to contact Its at your convenience. Sincerely, S&NM, INC. C_ Richard Connell,11 Senior Engineering Technician, !Michael W. Behen, P.E. Senior Geotechr&al Engineer CRC:N1Avsr11S Attachmcnts Copy: Norris, Kuske and Tuastall Consulting Engineers, Mr. Phil Norris, P.E. MAY-12-04 16:01 FROM:S&ME WI1-MINCTON ID:9107999956 PACE 3/4 TABLE 1 Double Ring Infiltrometer Testing The Pavilion at Carolina Beach Carolina Beach, North Carolina Job No. 1061-04-210 Date of Test: May 4, 2004 Depth of Test Below Site Grade: 7 inches Depth of Water in Rings: 3% inches Inner Diameter of Inner Ring: I I'K inches Inner Diameter of Outer Ring: 22'/z incites Depth to 'Water: No water was encountered to depth investigated. Average Infiltration Rate: 53.4 inches per hour SOIL PROFILE Location I Depth Hue . VaIue/Chroma Soil Description 0-10" 2.5 Y 511 Gray Fine to Medium SAND - Trace of Silt 10"-50" 10 YR 711 Light Gray Fine to Medium SAWED - Trace of Silt 50"-96" 2.5 Y 3/2 Very Dark Grayish Brown Fine to Medium SAND - Trace of Silt (Slightly to Fim-iIy Cemented) Location 2 Depth Hue Value/Chroma Soil Description 0-34" 2.5 Y 7/1 Light Gray Fine to Medium SAND - Trace of Silt 34"-50" 10 YR 618 Brownish Yellow Fine to Medium SAND - Trace of Silt 50"-96" 2.5 Y 6/6 Brownish Yellow Fine to Medium SAND -Trace of Silt Location 3 Depth Hue VaIue/Chroma Soil Description 0-39" 2.5 Y 6/1 Gray Fine to Medium SAND - Trace of Silt 39"-47" 10 YR 5/9 Yellowish Brown Fine to Medium SAND - Trace of Silt 4T`-70" 10 YR 4/3 Brown Fine to Medium SAND - Trace of Silt 70"-96" 2.5 Y 3/2 Very Dark Grayish Brown Fine to Medium SAND - Trace of Silt MAY-12-04 1G:02 FROM:B&ME WILMINGTON ID='9107999958 PAGE 4/4 -- ——.———— ASS- w ]57.�Y``--T _----- r [ ry, I ■ 3 2 ---- --- ------ ---- - --- -- -� r! -' 50,'Y All W, — ----- ----- — — ----- i ii 2 No ■ 2 !a k —D 1 r 1-_ -11-I [JI L . -- m 1 r iTw"H.ca^ N 13i.s' ; yyz'•1.E0k '� K "9'45.W" E�Z.i7 a7 — — \ � 1 \1 1 --------.- ...--..._� -------•-------- NOYE: Site plan drawing provided to S&ME by Saieed Construction Systems personnel. LEGEND Approximate Location of Hand-Augered Boring rFFI THE PAVILION RETAIL CENTERI: •i r� %r. i ..r 1+a .i. 32ci ! • 1 1 i�Jt`I r u .fti.,;�:, .'1)� ��. r; STORMWATER SYSTEM & EROSION CONTROL NARRATIVE THE PAVILION AT CAROLINA BEACH WILMINGTON, NORTH CAROLINA For The Pavilion at Carolina Beach, LLC 1135 Military Cutoff Rd., Suite 201 Wilmington, NC 28405 (910) 509-1696 May 2004 Prepared by: ANDREW & KUSKE CONSULTING ENGINEERS, INC. 902 Market Street Wilmington, North Carolina 28401 (910) 343-9653 (910) 343-9604 (Fax) E-mail: office@andrewandkuske.com A & K Project No. 04032 DESCRIPTION: The project site is a 2.74-acre tract located on US Hwy. 421 in Carolina Beach, North Carolina. The soils of the site consist of lightly vegetated sandy topsoil and grades ranging from 0.5% to 2.0%. Approximately 2.5 acres will be graded to allow construction of a new retail building with paved parking and paved access. The runoff from the site is estimated using the rational method 10-year design storm and rainfall data for the area. Construction is scheduled to begin as soon as all permits and approvals are obtained. EROSION CONTROL MEASURES: The attached plans and specifications give the requirements for erosion control measures. A gravel construction entrance will be constructed at the two entrances. Sediment traps will be installed around all inlets to provide sediment storage. Due to the dry, sandy nature of the site, very little sediment movement is expected. Maintenance will be provided by the grading contractor and developer. STORMWATER MANAGEMENT MEASURES: The project site is located in New Hanover County. Land disturbing on the site will exceed one acre, which requires the site to comply with the State Regulations. The stormwater runoff from the development will be directed to the underground infiltration system. The stormwater system was designed to accommodate this site at 80% impervious area lot coverage. It is designed to contain 2 inches of runoff and not discharge in a 50-year storm event. CONSTRUCTION SEQUENCE: The Contractor will install the gravel construction entrance prior to beginning any clearing and grading operations. Disturbed areas will be landscaped or seeded upon completion. MAINTENANCE PLAN 1. All erosion and sediment control practices will be checked for stability and operation following every runoff -producing rainfall but in no case less than once every week. Any needed repairs will be made immediately to maintain all practices as designed. 2. Install erosion control measures before beginning construction or as soon thereafter as possible. All erosion and sediment control practices will be checked for stability and operation following every runoff -producing rainfall but in no case less than once every week. Any needed repairs will be made immediately to maintain all practices as designed. 3. Maintain the gravel construction entrances in a condition to prevent mud or sediment from leaving the construction site. The contractor shall inspect the construction entrances on a daily basis. This will require periodic top dressing with additional No. 4 stone. Any objectionable materials spilled, washed, or tracked onto public roadways shall be removed immediately. 4. Install erosion control measures around the drop inlets as shown on the plans to trap silt during construction. Inspect the erosion control around the inlets after each rain and make repairs immediately. Remove sediment when it becomes 0.50 deep to provide adequate storage volume for subsequent rains. When the contributing drainage area has been adequately stabilized, remove all materials and any unstable soil and either salvage or dispose of it properly. Bring the disturbed area to proper grade and appropriately stabilize all bare areas around the drop inlets. 5. Sediment will be removed from behind the silt fence when it becomes 0.5 feet deep at the fence. The sediment fence will be repaired as necessary to maintain a barrier. 6. No cut or fill slopes shall exceed a side slope of 1 vertical to 3 horizontal unless otherwise specified on the plan. All slopes shall be seeded and stabilized within 15 days. 7. The stormwater ponds will act as sediment basins and will be cleaned out when the level of sediment reaches 2.0 ft below the top of the riser. Gravel will be cleaned or replaced when the sediment pool no longer drains properly. 8. No cut or fill slopes shall exceed a side slope of 1 vertical to 3 horizontal unless otherwise specified on the plan. All slopes shall be seeded and stabilized within 15 days. 9. All disturbed areas shall be seeded within 15 days of disturbance. All seeded areas will be fertilized, reseeded as necessary and mulched according to specifications in the vegetative plan to maintain a vigorous, dense vegetative cover. 10. More stringent measures shall be used to halt erosion if those shown on this plan are not effective. 11. All erosion shall be controlled including side slopes before the project is completed. 12. Remove temporary measures upon completion of project. All permanent measures will be well established before project closeout. SECTION 02920 SOIL EROSION AND SEDIMENTATION CONTROL 1. GENERAL 1.1 Contractor shall take every reasonable precaution throughout construction to prevent the erosion of soil and the sedimentation of streams, lakes, reservoirs, other water impoundments, ground surfaces, or other property as required by State and Local regulations. 1.2 The Contractor shall install all required silt fences, and construction entrances at the initiation of work, and have these measures reviewed and approved by the local permit authority prior to clearing and grading operations. 1.3 The Contractor shall, within 15 days of suspension or completion of land disturbing activities, provide permanent protective covering for disturbed areas. Temporary and permanent erosion control measures shall be coordinated to assure economical, effective, and continuous erosion and siltation control throughout the construction and post -construction period. Use the specified seed for both temporary and permanent seeding. 2. PRODUCTS 2.1 Asphalt for anchoring mulch shall be Type SS-1 Emulsion. 2.2 Fertilizer shall be 10-10-10 grade or equivalent. 2.3 Lime shall be dolomitic agricultural ground limestone containing not less than 10 percent magnesium oxide. 2.4 Mulch shall be small grain straw, hay, wood chips, asphalt emulsion, jute or other suitable material free of undesirable weed seed. 2.5 Phosphate shall be 20 percent superphosphate or equivalent. 2.6 Seed shall be 20% carpet grass, 24% Bermuda, 20% turf Fescue, 10% Creeping Red Fescue, and 24% Annual Rye grain. Bermuda seed shall be hulled for warm weather planting and unhulled for cool weather planting. Purity of seed shall be a minimum of 98 percent and germination shall be a minimum of 85 percent. 2.7 Silt fence shall consist of NCDOT Class A fabric supported by wood or metal posts spaced not more than 6 feet on center. The bottom of the fabric shall be buried a minimum of 6 inches. 2.8 Gravel for check dams shall be #57 washed stone. 2.9 Aggregate for construction entrance shall be #4 washed stone. 2.10 Stone rip rap for check dams and erosion control shall be NCDOT Class A or B as shown. 3. EXECUTION 3.1 General: Take every practicable measure during construction or suspension to work to minimize erosion and siltation. Measures should include good construction practices, temporary physical barriers to sediment travel, settling basins for new ditches, and establishment of vegetative cover. 3.2 Construction Practices 3.2.1 Avoid dumping soil or sediment into any wetland or watercourse. 3.2.2 Maintain an undisturbed vegetative buffer where possible between a natural watercourse and trenching and grading operations. 3.2.3 Avoid equipment crossings of streams, creeks, and ditches where practicable. 3.2.4 Grade all cut, fill and ditch slopes to minimum slope of 3:1, unless otherwise shown or directed. 3.3 Temporary Physical Barriers are required where sedimentation on off site property or excessive erosion is a problem. 3.3.1 Mulch shall be used for temporary stabilization of areas subject to excessive erosion and for protection of seedbeds after planting where required. 1. Apply grain straw and hay at a rate of 75 to 100 pounds per 1000 square feet and wood chips at a rate of 500 pounds per 1000 square feet. Jute and mesh should be installed as per manufacturer's instructions. 2. Asphalt emulsion for slope stabilization should be applied at a rate of 1,000 gallons per acre. Asphalt emulsion used for anchoring straw should be applied at a rate of 150 gallons per ton of straw. 3.3.2 Silt Fences shall be used at the base of slopes to restrict movement of sediment from the site. Clean silt fence of accumulated sediment after each rainfall event or when it exceeds a depth of 0.5 feet above natural grade. 3.3.3 Stone Check Dams, placed at the discharges of creeks, ditches, and swales, shall consist of Class A rip rap at minimum two feet high and three feet thick across the watercourse, with a one foot thick layer of gravel on upstream side. Remove sediment if accumulated to a depth of 1.0 feet at upstream face. 3.4 Vegetative Cover: Establish and maintain permanent vegetative cover on all unpaved areas disturbed by the work. 3.4.1 Preparation of Seedbed: Areas to be seeded shall be scarified to a depth of 4 inches and until a firm, well pulverized, uniform seedbed is prepared. Lime, phosphorous and fertilizer shall be applied during the scarification process in accordance with the following rates: Lime: 45 pounds per 1000 square feet Phosphorous: 20 pounds per 1000 square feet Fertilizer: 17 pounds per 1000 square feet 3.4.2 Seeding: Disturbed areas shall be seeded with 2 to 3 pounds per 1000 square feet of the specified seed mixture. Seed shall be worked into the bed to a depth of 114 inch. Regrade and seed eroded areas immediately 3.4.3 Mulch all areas immediately after seeding. Mulch shall be applied and anchored as specified hereinbefore. Reapply as necessary to retain cover until grass is established. 3.5 Construction Entrance: Provide an aggregate drive, 20 feet wide by 50 feet long by 6 inches thick at each entrance to the site used by construction vehicles, until such time as the permanent roadway is constructed. Remove soil if accumulated to a depth greater than 0.5 inches. 3.6 Maintenance: The Owner and Contractor shall be responsible for maintaining all temporary and permanent erosion control measures. Temporary structures shall be maintained until such time as vegetation is firmly established in the area protected by the structure. Permanent streambank protection and grassed areas shall be maintained until completion of the project. Areas that fail to show a suitable stand of grass or which are damaged by erosion shall be immediately repaired. END OF SECTION