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HomeMy WebLinkAboutSW8060302_HISTORICAL FILE_20060420STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO. SW DOC TYPE ❑ CURRENT PERMIT ❑ APPROVED PLANS HISTORICAL FILE COMPLIANCE EVALUATION INSPECTION DOC DATE o�GY�'o�ab YYYYMMDD State Stormwater Management Systems Permit No. SW8 060302 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 John M. Herion and 1302 Properties, LLP Southeastern Nephrology New Hanover County FOR THE construction, operation and maintenance of an underground infiltration trench 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 April 20, 2016, and shall be subject to the following specified conditions and limitations: I. DESIGN STANDARDS This permit is effective only with respect to the nature and volume of stormwater described in the application and other supporting data. 2. This stormwater system has been approved for the management of stormwater runoff as described in Section 1.6 on page 3 of this permit. The stormwater control has been designed to handle the runoff from 39,161 square feet of impervious. area. This trench must be operated with a 30' vegetated filter. 3. The tract will be limited to the amount of built -upon area indicated on page 3 of this permit, and per approved plans. There is no allotment for future built -upon area at the site. 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. Page 2 of 7 State Stormwater Management Systems Permit No. SW8 060302 6. The following design criteria have been provided in the infiltration trench and must be maintained at design condition: a. Drainage Area, acres: Z Onsite, ft : Offsite, ft2: b. Total Impervious Surfaces, ft2: OS Buildings, P : OS Parking, ft : z OS Sidewalks, ft C. Design Storm, inches: d. Trench Dimensions, L x W x H, ft e. Perforated Pipe Diameter/Length f. Bottom Elevation, FMSL: g. Bypass Weir Elevation, FMSL: h. Permitted Storage Volume, ft3: i. Type of Soil: j. Expected Infiltration Rate, in/hr: k. Seasonal High Water Table, FMSL I. Time to Draw Down, hours: M. Receiving Stream/River Basin: n. Stream Index Number: o. Classification of Water Body: II. SCHEDULE OF COMPLIANCE 1.273 55,464 None 39,161 6,197 30,672 2,292 1.0 12" 0 Pipe : 169.5' x 25' x 1.17' 6"0 Pipe: 85' avg. x 34.5' x 1.17' 6" 0 /125' 12,'0/112' 46.75 47.92' 3,342 Kureb Sand 60 44.75 0.1 UT to Greenfield Lake / Cape Fear 18-76-1 "C; Sw" 1. The stormwater management system shall be constructed in its entirety, vegetated and operational for its intended use prior to the construction of any built -upon surface. 2. During construction, erosion shall be kept to a minimum and any eroded areas of the system will be repaired immediately. 3. The permittee shall at all times provide the operation and maintenance necessary to assure the permitted stormwater system functions at optimum efficiency. The approved Operation and Maintenance Plan must be followed in its entirety and maintenance must occur at the scheduled intervals including, but not limited to: a. Semiannual scheduled inspections (every 6 months). b. Sediment removal. C. Mowing and revegetation of slopes and the vegetated filter. d. Immediate repair of eroded areas. e., Maintenance of all slopes in accordance with approved plans and specifications. f. Debris removal and unclogging of bypass structure, filter media, flow spreader, catch basins, piping and vegetated filter. g. A clear access path to the bypass structure must be available at all times. Page 3 of 7 State Stormwater Management Systems Permit No. SW8 060302 4. Records of maintenance activities must be kept and made available upon request to authorized personnel of DWQ. The records will indicate the date, activity, name of person performing the work and what actions were taken. 5. The facilities shall be constructed as shown on the approved plans. This permit shall become voidable unless the facilities are constructed in accordance with the conditions of this permit, the approved plans and specifications, and other supporting data. 6. Upon completion of construction, prior to issuance of a Certificate of Occupancy, and prior to operation of this permitted facility, a certification must be received from an appropriate designer for the system installed certifying that the permitted facility has been installed in accordance with this permit, the approved plans and specifications, and other supporting documentation. Any deviations from the approved plans and specifications must be noted on the Certification. A modification may be required for those deviations. 7. If the stormwater system was used as an Erosion Control device, it must be restored to design condition prior to operation as a stormwater treatment device, and prior to occupancy of the facility. 8. Access to the stormwater facilities shall be maintained via appropriate easements at all times. 9. The permittee shall submit to the Director and shall have received approval for revised plans, specifications, and calculations prior to construction, for any modification to the approved plans, including, but not limited to, those listed below: a. Any revision to any item shown on the approved plans, including the stormwater management measures, built -upon area, details, etc. b. Project name change. C. Transfer of ownership. d. Redesign or addition to the approved amount of built -upon area or to the drainage area. e. Further subdivision, acquisition, lease or sale of all or part of the project area. The project area is defined as all property owned by the permittee, for which Sedimentation and Erosion Control Plan approval or a CAMA Major permit was sought. f. Filling in, altering, or piping of any vegetative conveyance shown on the approved plan. 10. The permittee shall submit final site layout and grading plans for any permitted future areas shown on the approved plans, prior to construction. 11. A copy of the approved plans and specifications shall be maintained on file by .the Permittee for a minimum of ten years from the date of the completion of construction. 12. The Director may notify the permittee when the permitted site does not meet one or more of the minimum requirements of the permit. Within the time frame specified in the notice, the permittee shall submit a written time schedule to the Director for modifying the site to meet minimum requirements. The permittee shall provide copies of revised plans and certification in writing to the Director that the changes have been made. Page 4 of 7 State Stormwater Management Systems Permit No. SW8 060302 Ill1KCi:411:11 0],`L9 vfrsw► This permit is not transferable except after notice to and approval by the Director. In the event of a change of ownership, or a name change, the permittee must submit a formal permit transfer request to the Division of Water Quality, accompanied by a completed name/ownership change form, documentation from the parties involved, and other supporting materials as may be appropriate. The approval of this request will be considered on its merits and may or may not be approved. The permittee is responsible for compliance with all permit conditions until such time as the Division approves the transfer request. 2. Failure to abide by the conditions and limitations contained in this permit may subject the Permittee to enforcement action by the Division of Water Quality, in accordance with North Carolina General Statute 143-215.6A to 143-215.6C. 3. The issuance of this permit does not preclude the Permittee from complying with any and all statutes, rules, regulations, or ordinances, which may be imposed by other government agencies (local, state, and federal) having jurisdiction. 4. In the event that the facilities fail to perform satisfactorily, including the creation of nuisance conditions, the Permittee shall take immediate corrective action, including those as may be required by this Division, such as the construction of additional or replacement stormwater management systems. 5. The.permittee grants DENR Staff permission to enter the property during normal business hours for the purpose of inspecting all components of the permitted stormwater management facility. 6. The permit may be modified, revoked and reissued or terminated for cause. The filing of a request for a permit modification, revocation and reissuance or termination does not stay any permit condition. 7. Unless specified elsewhere, permanent seeding requirements for the stormwater control must follow the guidelines established in the North Carolina Erosion and Sediment Control Planning and Design Manual. 8. Approved plans and specifications for this project are incorporated by reference and are enforceable parts of the permit. 9. The permittee shall notify the Division any name, ownership or mailing address changes within 30 days. Permit issued this # e 20th day of April 2006. NOR CAROLIN NVI ONMENTAL MANAGEMENT COMMISSION for Alan W. Klimek, P.E., Director Division of Water Quality By Authority of the Environmental Management Commission Page 5 of 7 State Stormwater Management Systems Permit No. SW8 060302 Page 1 of 2 Southeastern Nephrology Stormwater Permit No. SW8 060302 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 (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 S EAL Page 6 of 7 State Stormwater Management Systems Permit No. SW8 060302 Page 2 of 2 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 bypass structure elevations are per the approved plan. 6. The bypass structure is located per the approved plans. 7. A Trash Rack is provided on the outlet/bypass structure. 8. All slopes are grassed with permanent vegetation. 9. Vegetated slopes are no steeper than 3:1. 10. The inlets are located per the approved plans and do not cause short- circuiting of the system. 11. The permitted amounts of surface area and/or volume have been provided. 12. All required design depths are provided. 13. All required parts of the system are provided. 14. The required system dimensions are provided per the approved plans. cc: NCDENR-DWQ Regional Office Tony Roberts, New Hanover County Building Inspections Page 7 of 7 STORMWATER SYSTEM & EROSION CONTROL NARRATIVE SOUTHEASTERN NEPHROLOGY WILMINGTON, NORTH CAROLINA For 1302 Properties, LLC 1302 Medical Center Drive Wilmington, NC 28401 (910) 343-9800 MAR 0 7 Z006 . YL) g 0�_0_3_ February 2006 Prepared by: NORRIS, KUSKE & TUNSTALL CONSULTING ENGINEERS, INC. 902 Market Street Wilmington, North Carolina 28401 (910) 343-9653 (910) 343-9604 (Fax) E-mail: office@nkteng.com NKT Project No_ 05183 NARRATIVE DESCRIPTION: The project site is a 1.3 acre tract located at 1302 Medical Center Drive in Wilmington, North Carolina. The soils of the site consist of lightly vegetated, sandy topsoil and grades ranging from 0.5% to 1.0%. Approximately 1.41 acres will be graded to allow construction of a new doctor's office 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 outline the requirements for erosion control measures. Silt fencing will be provided along each side of the entrance drive where stormwater would be expected to sheet flow from disturbed areas directly to adjacent property. A gravel construction entrance will be constructed at the main entrance. 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 and County Regulations. The stormwater runoff from the development will be directed to the on site infiltration system. CONSTRUCTION SEQUENCE: The Contractor will install the gravel construction entrance and silt fence prior to beginning any clearing and grading operations. Additional silt fence will be installed when and if conditions warrant during construction. The detention pond/silt basin will be constructed immediately after that portion of the site is cleared, and outlet structure with protection will be installed_ . Disturbed areas will be landscaped or seeded upon completion. EROSION CONTROL NOTES AND MAINTENANCE PLAN 1. 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. 2. 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. 3. 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. 4. 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. Silt fence stakes shall be spaced 6 feet apart unless a wire backing is used with 8 foot stake spacing. 5. Inspect temporary sediment traps / check dams after each period of significant rainfall. Remove sediment and restore the trap to its original dimensions when the sediment has accumulated to one-half the design depth of the trap. Place the sediment that is removed in the designated disposal area and replace the contaminated part of the gravel facing. Check the structure for damage from erosion or piping. Periodically check the depth of the spillway to ensure it is a minimum of 1.5 ft below the low point of the embankment. Immediately fill any settlement of the embankment to slightly above design grade. Any riprap displaced from the spillway must be replaced immediately. After all sediment - producing areas have been permanently stabilized, remove the structure and all unstable sediment. Smooth the area to blend with the adjoining areas and stabilize properly. 6. The angle for graded slopes and fills shall be no greater than the angle that can be retained by vegetative cover or other adequate erosion -control devices or structures. In any event, slopes left exposed will, within 21 calendar days of completion of any phase of grading, be planted or otherwise provided with temporary or permanent ground cover, devices, or structures sufficient to restrain erosion. 7. 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. 8. More stringent measures shall be used to halt erosion if those shown on this plan are not effective. 9. All erosion shall be controlled including side slopes before the project is completed. 10. 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 or Class B erosion control stone 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 As = - NORRIS, KUSKE TUNSTALL Aoo'�� CONSULTING ENGINEERS, INC. April 3, 2006 Mr. Paul Bartlett, P-E., Environmental Engineer NC DENR / Division of Water Quality Water Quality Section 127 Cardinal Drive Extension Wilmington, NC 28405-3845 Re: Southeastern Nephrology SW8 060302 Additional Information NKT Project No. 05183 Dear Mr. Bartlett: J. Phillip Norris, P.E. John A. Kuske, III, P.E. John S. Tunstall, P.E. J.A. Kuske, P.E. of Counsel We are responding to your comments of March 20, 2006 regarding the subject project as follows: A note has been added that no wetlands exist on the site. The invert elevations have been added and modified. The seasonal high water table has been revised to reflect an elevation of 44.75 on the plans and in the supplement. A 30' vegetated filter has been added to the plans. �8 The calculations have been revised to reflect a required volume of 3,167 cubic feet. VIEK Skipped on your letter. V The supplement has been modified to reflect both 6 inch and 12 inch pipes. These have not been used in the volume calculations to be conservative. f 8. /The infiltration system size has been changed. The new bottom surface elevation is 46.75. We are enclosing two (2) sets of revised plans, one (1) set of revised calculations and the revised supplement application (SWU-107) for your approval. Please contact us if you have any further questions or comments. Thank you for your assistance on this project. Sincerely, NORRIS, KUSKE & TUNSTALL CONSULTINNGINEERS, INC T Phillib-Wrris, P.E. JPf4/asn 05183 04-03-06-s-sw response-Itr o r, fl �n �a cc: Chip Overman / Clancy & Theys Construction Co. 902 Market Street • Wilmington, NC 28401-4733 • Phone: 910.343.9653 0 Fax: 910.343.9604 • P. 1 T COMMUNICATION RESULT REPORT ( MAR.20.2006 1119PM ) '� TTI NCDENR WIRO FILE MODE OPTION ADDRESS (GROUP) -------RESULT- PAGE ---------------------------- ----------------------- -------------- -557 MEMORY TX----- 93433604 OK P. 3/3 REASON FOR ERROR E-1) HANG UP OR LINE FAIL E-3) NO ANSWER E-2) BUSY E-4) NO FACSIMILE CONNECTION State of North Carolina Department of Environment and Natural Resources Wilmington Regional Office Michael F. Easley, Governor Date: 3/20/06 To: Phil Norris Company: NKT FAX #: (910) 343-9604 William G. Ross, Jr., Secretary FAX COVER SHEET N6). of Pages: 3 (Incl. Cover) From: Paul Bartlett Water Quality Section - Stormwater FAX #: 910-350-2004 Phone #: 910-796-7301 DWQ Stormwater Project Number: SW8 060302 Project Name: Southeastern Nephrology MESSAGE: Phil, A Request for Additional Information is attached for the subject project. The original will be mailed to Mr. Herion, and a copy will be mailed to you, State of North Carolina Department of Environment and Natural Resources Wilmington Regional Office Michael F. Easley, Governor Date: 3/20/06 To: Phil Norris Company: NKT FAX #: (910) 343-9604 William G. Ross, Jr., Secretary FAX COVER SHEET No. of Pages: 3 (Incl. Cover) From: Paul Bartlett Water Quality Section - Stormwater FAX #: 910-350-2004 Phone #: 910-796-7301 DWQ Stormwater Project Number: SW8 060302 Project Name: Southeastern Nephrology MESSAGE: Phil, A Request for Additional Information is attached for the subject project. The original will be mailed to Mr. Herion, and a copy will be mailed to you. ENBlptb: S:IWQSISTORMWATERIADDINF0120061060302.mar06 127 Cardinal Drive Extension, Wilmington, NC 28405-3845 Telephone (910) 796-7215 FAX (910) 350-2004 An Equal Opportunity Affirmative Action Employer -o�oF w A r�RQ� r March 20, 2006 Mr. John M. Herion, Partner 1302 Properties, LLP 1302 Medical Center Drive Wilmington, NC 28401 Subject: Request for Additional Information Stormwater Project No. SW8 060302 Southeastern Nephrology New Hanover County Dear Mr. Herion: Michael F. Easley, Governor William G. Ross Jr., Secretary North Carolina Department of Lnviionment and Natural Resources Alan W. Klimek, P.E. Director Divisiau of Water Quality The Wilmington Regional Office received a Stormwater Management Permit Application for Southeastern Nephrology on March 7, 2006. A preliminary review of that information has determined that the application is not complete. The following information is needed to continue the stormwater review: J1 �` lease either delineate all wetlands on site, disturbed or undisturbed, or note on the plans that none exist. ase provide the invert elevation for Cl #3 on Sheet #C3. 3. 0� se clarify the seasonal high water table elevation. Sheet #C7 (edited) lists 3.75', the supplement I' s 45.75', and the soils report lists 69" below grade at Location 3 (confiracent Lewis of this office, 12I5I05), which equates to a SHWT elevatiofor a 50.5' grade elevation per Sheet #C3. 4. Please provide aed filter for the infiltration system's bypass line or provide 2X the vored for a 1 " storm event. 5. lease clarify the calculation for the required volume. The calculation takes a conservative approach of: 1'712 * (20% * pervious area + 100% * impervious 1{ / area), which results in 3,535 cu ft vs. the BMP Manual calculation of: 1'712 * Rv Drainage Area, which results In 3,167 cu ft. The BMP approach may be more helpful in responding to Item #4 above. ✓Please clarify the pipe length and diameter entries in the supplement. Both 6"0 and 12" 0 perforated pipe are used in the infiltration system per Sheet #C3, but ('i l only 12" 0 pipe is listed in the supplement. The volume credit for the piping will help in responding to Item #4 if the 2X volume approach is used. 8. 2P6ase clarify the infiltration system's bottom surface area. Sheet #C7 mensions result in 5,692 sq ft vs. 5,808 sq ft listed in the calculations. No;-thCarohna A7aturally ,North Carolina Division of Water Quality 127 Cardinal Drive E.riension Wilmington, NC 28405 Phone (910) 796-7215 Customer Service Wilmington Regional Office Iniemet: wtiwricxvaterUualily -ork Ear (910)350-2004 1 -877-623 -6748 An Equal Opportunity/Affirmative Action Employer - 50% Recycled110% Post Consumer Paper Mr. John M. Herion, Partner March 20, 2006 Stormwater Application No. SW8 060302 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 March 28, 2006, or the application will be returned as incomplete. The return of a project will 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 construction of any impervious 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) 796-7301. Sincerely, 77 Paul T. Bartlett, P.E. Environmental Engineer ENBlptb: S:IWQSISTORMWATERIADDINFO120061060302.mar06 CC' J. Phillip Norris, P.E., Norris, Kuske & Tunstall Consulting Engineers, Inc. Paul Bartlett 0.2183 '20;Trwor-01 +♦. November 16, 2005 Norris, Kuske and Tunstall Consulting Engineers 902 Market Street Wilmington, North Carolina 28401 Attention: Mr. J. Philip Norris; P.E. Reference: Double Ring infiltrometer Testing Southeast Nephrology Medical Center Drive Wilmington, North Carolina Job No. 1061-05-576D Dear Mr. Norris: RECEIVED NOV ? 12005 In accordance with S&ME Proposal 976-05 dated September 19, 2005, S&ME personnel have recently conducted double -ring infiltrometer testing of the surficial soils at the subject site at the approximate location shown in Figure 1. Specifically, our representatives performed the following work items: 1. Advanced three hand -angered borings across the site in order to visually classify the in -place soils. The hue and chrorma of the recovered soil samples were compared to a Munsell Soil Color Chart. 2. Conducted one double -ring infiltrometer test at a depth of approximately 19 inches below the existing ground surface. This testing was conducted in general accordance with American Society for Testing and Materials (ASTM) 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 in - place soils consist of sands with varying amounts of silt or clay which extended to the maximum completed boring depth of 71 inches below the existing ground surface. Water was encountered in the boreholes at depths ranging from 57 to 69 inches below the existing ground surface. The site water level N ill fluctuate with climatic and seasonal conditions, however, and may be higher or 1oNver at other times of the year. 5&ME, Inc. (910) 799-9945 6409 Amsterdam Way, Building 113 19101 799-9958 fox Wilmington, Nortio CoroGna 28405 www.smeinc.com Norris, Kuske turd Tunstall Consulting Engineers November 16, 2005 S&ME Job Number 1061-05-57617 rage Two The average infiltration rate at the test location was 61.6 inches per hour. A summary of the field test results is presented in Tables 1 and 2. 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 us at your convenience. Sincerely, S&ME, INC. Paul A. Masten Environmental Professional Randy Martin, P.E. Branch Manager PtiM:RGM/jns Attachments TABLE I Hand Auger Borings Munsell Soil Descriptions Southeast Nephrology Medical Center Drive Wilmington, North Carolina Job Number 1061-05-576D Depth Location Inches Hue Value/Chroma Soil Description 1 0-14 2.5 Y 4/2 Dark grayish brown slightly silty medium to fine SAND with rock. fragments 14-30 2.5 Y 6/1 Gray slightly silty medium to fine SAND 30-48 2.5 Y 4/3 Olive brown slightly silty medium to fine SAND (few clay lumps) 48-60 2.5 Y 3/1 Very dark gray slightly silty medium to fine SAND Water was encountered at a depth of 57" below the existing ground surface. 2 0-14 2.5 Y 4/1 Dark gray slightly silty medium to fine SAND 14-36 2.5 Y 7/1 Light gray slightly silty medium to fine SAND 36-45 10 YR 2/1 Black gray slightly silty medium to fine SAND (slightly cemented) 45-68 2.5 Y 5/2 Grayish brown slightly silty medium to fine SAND Water was encountered at a depth ol'64" below the existing ground surface. TABLE 1 .lob Number 1061-05-576D Page Two Depth Location Inches Hue Valise/Chroma Soil Description 3 0-5 2.5 Y 4/1 Dark gray slightly silty medium to fine SAND 5-30 2.5 Y 7/1 Light gray slightly silty medium to fine SAND 30-45 10 YR 4/2 Dark grayish brown slightly silty medium to fine SAND (slightly cemented) 45-60 2.5 Y 4/4 Olive brown slightly silty medium to fine SAND 60-71 2.5 Y 2.5/1 Black slightly silty medium to fine SAND Water was encountered at a depth of 69" below the existing ground surface. According to the Soil Survey of New Hanover County prepared by the United States Department of Agriculture, Soil Conservation Service, the areas wherein the hand augers were advanced consist of the Kureb soil series. As reported in the New Hanover County Soil Survey, the seasonal high water table for that series is typically greater than 6 feet below land surface. This information conflicts with the data gathered during the hand auger advancements. This deviation is most likely due to the amount of rainfall that the area received during the months of September and October 2005. TABLE 2 Double Ring Infiltrometer Testing Southeast Nephrology Medical Center Drive Wilmington, North Carolina Job Number 1061-05-576D Location: 2 Date of Test: November 15, 2005 Depth of "Pest Below Site Grade: 19 inches Depth of Water in Rings: 3% inches Depth to Water: No water at time of testing Average infiltration Rate: 61.6 inches per hour High Water Table: >6 feet below land surface* Soil Series: Kureb* Inner Diameter of Inner Ring: 1 P14 inches Inner Diameter of Outer Ring: 22'VZ inches Note: *As interpolated from the "Soil Survey of New Hanover County" prepared by the United States Department of Agriculture Soil Conservation Service Approximate SS']� •9.52 I I l I I I I I Eec ° aiPE' I e;P�E I I r. vE ` c l 2 CPOW 5206 •C502 52.20 51, 79 EPBC +960 • EPBa cs EP EP Infiltrometer ®� rcREPE c €.y SW 6 19.55 .9 10 9.15 Y1rs1PE V ~ . ,'RO•e, °51.86 CPBC 'SNIPE PV 9 87 EW Pv Test Location EPBC EpPC •P9..0 {}_ �9.52 PVC I-vm1,EB+♦ Pv °.y 27 DROP INLET 7 p -z6 DROP INLET By °Pv TOP= 49.10 w of:R, Pv TOP=.I_ i . 9 w ... 2.0] CrJvG Ca°cs I k _ BW .7.9 Y f1 1y[q € v,= i. V IINI'.OUT= 45.92I . °' i O .ci'•` +� ri at-3 w am !iO t, SaaPv c PECS CPen 2-U+EPE N a9.99 ! . r 1W WE RT c5 ©lDC St53 R sT 5 8 •. 51. �u WI !TIE _ I a9.79 P.1 �+ if 3 SiORACE { EP { 19, I�50 Q SC .).S4 1//� 4 G -rnL CKE ! / h 51 $��r1' S � 50 V'4C � BC 51-'R SI °GnAc 1 b 11 NE ! �50 0 _ •'j,T 50,Op 1 �-3 a] 5 EP ZJ ✓ �y.l 2 2' aY . 6 1-B-enB 1 5a,+x B 50. }R P i9fi�' R[ cs' 'B 1•REDO�R cv � IPI � 50,21. 'SC � U N r C� �99 � 9 � � ' 3'3+. 10•LLPtnE �- • � � � � ' .5 OC CS � �taa s Dwaoa J az,5 t 5,. $ac sec s ba MASONRY I [Ep d x 1 EPE + ` s&�59 C 9 0wo00 P 0 L 'NE Y BUILf11tV� n p 51 a5 _ 52,1 p, i. 17�5R IE'nCE .. • lvei'OZ , CE6.lR 0� qp .. 1°•uP1nE w I r F.F_F 52,95 A oc72 }-STORY BRI K & )-WORK �'' �Ra 796 1 s�a1 FRA, r!E I.BUIL -1NG 'EPR° e) +•cEBRR 1 •I of cs 9 •9 P ( 5-CEDAR J' RR 3'c CAR 1-CEORR 12 rt01 - 2^BWvoB l 9 a1 S5w.:7 1 ~ i L 5,WORK EPBC li uP1nC - 2.Ow00a 9 Sn 9 9 y ]' PC Y C 7•CREPE .1•CaCAE La 5 7 61 i - PORCR �_ �,y ga'� OS h\00 "� 3--CREPE 7•{7tE7'E g CH ,iQ.�, +S.9,90 � � C ��YY yy' 19.97 �0a ♦ 1J•LLPiNE 5w$6 19.a).. .06 A.+6 SIDEWALK 10.,8 I E AZA fan,+ eP ` 2 [71 SN51 I 50.12 ''� °S I t Sw •] Sµ.15 Sw.+p Lil EPA 50..0 0Sr SW $ Sw 5p 2 y, 7.8a 52.25 O 1'(p 7 EP.• a50,30 P9[ S BC °CS [�5[ a s9.s. FF i'-!3P 'At:T . ARKJi'%%"a 7. ,PE u °GS 1CnEPP• Q .Pv.a1 °Pv']b .SAY - J I CS07 °51.69 M ,PY69 .5192 05 to DROP INL T r- p INLET ° TCA= 4 .15 TOP= 49 45 cN° 10 s,s9 -s, �. 51 0 , ".4N_ tFA'?6 F:.B' RKIA 7.96 B' c nw INV. 46. 9 Q �n j as INV. = 45.40 0 9 ec S2,a5Dw] 50 ]+ B.a2 EPBC 96 P 44.2 a9,72 19.19 BI I s"0 cs , I s,). ,so,e __ EPUC ePRc .969 ePa .50 EPBC ,.ucs Q EPec-.. U' ILITY •].' °as °5o.J5 c, EP 0 °tt cs I ,46. B,e 5'ca r"e, 'r V ULT ESQ EP9C q EPBC 9, 9.a7 EPBC -nO ? 2"0ri0aB S ff $C' PRC ° .9 JB EP9C EPnc yu, EPBC ! 9g53 .,9Gd ,v,as ac°< JuB a 1,9E p Y� C9 PVC p t J"HOLLY 1•CREPE .9.}I] a9.171 - 17-77 ��,y� -~ 3-CREPE M �{ � 58-I1 I BUT Dvi 2-DwpOa .+5 „n i c9 • L`i i.l ea r M C5GI'€ .906 9.0a i a2,44� as _ ! 184.88 EP r. FPNc U I+4.94 5�in `HscN CONCRETE _ L - - �'" 0 +9.71 - - - - - DRI VE D4 BE.a w B:: CJ `�LIL ,9.a4 5. EP 25 7 S __ Al ry u BC 19, EP _ CONCRETE CURB J ,9,51 - - .. o SSMK 5D61 I S5ME TO 17th STREET EP CP TOP= 48.48 TOP= 48.47 TOP= 4 21 �-- EDICAL CENTER DRIVE INV.=. 43.12 r INV.- 44.92 INV.- 4 79 oa 10.55 h,t,- - R9.77--'.'-__-L-_.` •8-7b i .R.�t Note: Site plan drawing provided to S&ME by Clancy & Theys Construction Company personnel. LEGEND SCALE: NOT TO SCALE DOUBLE -RING INFILTROMETER TESTING FI GURE SOUTHEAST NEPHROLOGY NUMBER ® Approximate CHECKED BY: PAM MEDICAL CENTER DRIVE 1 Infiltrometer DRAWN BY. JNS WILMINGTON, NORTH CAROLINA Test Location ENGINEERING TESTING DATE: 11-16-05 ENVIRONMENTAL SERVICES JOB NUMBER: 1061-05-576D TopoZone - The Web's Topographic Map P ge 1 of 1 It (,'`efJe laff-i3 -7G- 1 sch• 0' r�t r 42 Imo-„ _�� .�% `� � -�- _ .•� n /' � � `t � �.- � �.� � � , �1 r fn yaiy .,._.4'} S„s ✓��e„{j!![ • �_ ��/' McMO f f�''� err>orbj � 4`�� �, �LOlAl itll�,' �f�.rG •1. Yi � � -`t..-L f it Tank I 0 0.3 0.6 0.9 1.2 1.5 km 0 0.1 0.2 0.3 0.4 0.5 mi Map center is 340 12' 13%, 770 55' 3TV (WGS84/NAD83) Wilmington quadrangle Projection is UTM Zone 18 NAD83-Daturn M "` M=--8.969 G=-1.647 http://-vvww.topozone.com/print.asp?z=18&n=3788606,7052771 &e=230306.137795634&s 3/20/2006 051x3 2O 164 9O30 State of North Carolina i006 SOSID: 0563714 Department of the Secretary of State MAC ate Filed: 6113/2000 8:04 AM �1op Elaine F. Marshall APPLICATION FOR REGISTRA�ON�North Carolina Secretary of State Registered Limited Liability Partnership Pursuant to §59-84.2 oil me General Statues ofNorth Carolina, the undersigned hereby submits this application for registration as a Registered Limited Liability Partnership. 1. 2. 3. 4. 5. fi. 7. 8. The name of the partnership is: 1302 Properties, LLP (Thee name must contain the words "Registered Limited Liability Partnership," "Limited Liability Partnership, or the abbreviation "L.L.P.," ILL.L.P.," "LLP," or "RLLP" as the last words or letters of its name.) The street address of the partnership's principal office is: Number and Street 1302 Medical. Center Drive City, State, Zip Code Wilmington, North Carolina 28401 The name of the initial registered agent is: John M. Herion County New Hanover The street address and county of the initial registered office of the limited liability partnership is: Number and Street 1302 Medical Center Drive City, State, Zip Cade Wilmington, North Carolina 28401 County New Hanover The mailing address V dorerew from 111e swm addrm of the initial registered office is: Briefly describe the business in which the partnership is engaged: Real estate investments The fiscal year end of the partnership December 31 This registration will be effective upon filing, unless a date and/or time is specified: This the 9day of June , 2000 1302 Properties, LLP ` jinLlin . /k Si e John M. Herion — Partner Type or Print Name and Title NOM: F►7ing fee is $125_ This domnmW end one erect or conformed oopy of the application mast be Sled wfth the Secretary of Stain. C(MPOKA'n0NS aIYiSIQN RoBox 29622 (Revised NP avember1999j OM LLP, NC 27626-0622Z Form LP-07 'A I Page 1 of 1 OSM North Carolina Maine F. Marshall DEPARTM ENT OF TldE Secretary SECRETARY OF STATE Corporations *Corporations Home *Important Notice *Corporate Forms/Fees *Corporations FAQ *Tobacco Manufacturers *Dissolution Reports *Non -Profit Reports *Verify Certification *online Annual Reports *KBBE B2B Annual Reports Links *Secretary Of State Home *Register for E-Procurement *Dept. of Revenue Legislation *1999 Senate Bills *2001 Bill Summaries *Annual Reports 1997 *Corporations 1997 *Other Legislation Search *By Corporate Name *For New Corporation *By Registered Agent Online Orders *Start An Order *New Payment Procedures Contact Us *Corporations Division *Secretary of State's web site Print *Printable Page PO Box 29622 Raleigh, NC 27626-0622 (919)807-2000 Date: 3/7/2006 Click here to: View Document Filings I Print apre-populated Annual Report Form i Annual Report Count i File an ij Annual Report i Corporation Names Name Name Type NC 1302 Properties, LLP Legal Limited Liability Partnership Information SOSID: 0553714 Status: Current -Active Date Formed: 6/13/2000 Citizenship: Domestic State of Inc.: NC Duration: Perpetual Registered Agent Agent Name: Registered Office Address: Registered Mailing Address: Principal Office Address: Principal Mailing Address: Herion, John M. 1302 Medical Center Drive Wilmington NC 28401 1302 Medical Center Drive Wilmington NC 28401 1302 Medical Center Drive Wilmington NC 28401 No Address For questions or comments about the North Carolina Secretary of State's web site, please send a -mail to Webmaster. http://www.secretary.state.nc.us/Corporations/Corp.aspx?PitemId=52735 87 3/7/2006 NORRIS, KUSKE &TU NSTALL CONSULTING ENGINEERS, March 7, 2006 Mr. Cameron Weaver, Express Review Coordinator NC DENR 1 Division of Water Quality Water Quality Section 127 Cardinal Drive Extension Wilmington, NC 28405-3845 Re: State Stormwater Permit Express Review Submittal Southeastern Nephrology 1302 Medical Center Drive Wilmington, NC NKT Project No. 05183 Dear Mr. Weaver: INC. J. Phillip Norris, P.E. John A. Kuske, III, P.E. John S. Tunstall, P.E. J.A. Kuske, PE, of Counsel Enclosed are two (2) sets of plans for the subject project, one (1) set of calculations, one (1) copy of the stormwater narrative, one (1) copy of the soils 1 infiltration system report, one (1) copy of the Articles of Organization, the original Division of Water Quality Stormwater Management Permit application, the original SWU-107 supplement form, 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, NORRIS, KUSKE, & TUNSTALL CONSULTING ENGINEERS, INC. J. Poillip Norris, P.E. JPNlasn 05183 03-07-06-s-sw express-Itr Enclosures CC' Chip Overman 1 Clancy & Theys Construction Co. 902 Market Street • Wilmington, NC 28401-4733 • Phone: 910.343.9653 • Fax: 910.343.9604