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HomeMy WebLinkAboutSW8041130_HISTORICAL FILE_20050628 (2)STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO. SW8 0+ 30 DOC TYPE ❑ CURRENT PERMIT ❑ APPROVED PLANS HISTORICAL FILE ❑ COMPLIANCE EVALUATION INSPECTION DOC DATE 205 06 28 YYYYMMDD Michael F. Easley, Governor William G._Ross, Jr., Secretary North Carolina Department of Environment and Natural Resources Alan W. Klimek, P.E. Director Division of Water Quality June 28, 2005 Warren G. Bailey, Member Bailey & Southstar, LLC 405-D Western Boulevard Jacksonville, NC 28546 Subject: Stormwater Permit No. SW8 041130 Modification Walgreen's Drugstore - Jacksonville, NC High Density Project Onslow County Dear Mr. Bailey: The Wilmington Regional Office received a complete Stormwater Management Permit Application for Walgreen's Drugstore - Jacksonville, NC on June 28, 2005. 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. SW8 041130 Modification dated June 28, 2005, for the construction of the subject project. This permit shall be effective from the date of issuance until June 28, 2015, 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 fcr=-GNeration 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 150E of the North Carolina General Statutes, and filed with the Office of Administrative Hearings, P.O. Drawer 27447, Raleigh, NC 27611-7447. Unless such demands are made this permit shall be final and binding. If you have any questions, or need additional information concerning this matter, please contact Rhonda Hall, or me at (910) 796-7215. Sincerely, Ed Beck Regional Supervisor Surface Water Protection Section ENB/rbh: S:\WQS\STORMWAT\PERMIT\041130 Mod.jun05 cc: Kent Harrell, Norris, Kuske & Tunstall Consulting Engineers, Inc. Onslow County Building Inspections Rhonda Hall cWilmirigton Regional Office Central Files North Carolina Division of Water Quality 127 Cardinal Drive Extension Phone (910) 796-7215 Customer Servicel-877-623-6748 Wilmington Regional Office Wilmington, NC 28405-3845 FAX (910) 350.2004 Internet: h2o.enr.state.nc.us An Equal Opportunity/Affirmative Action Employer— 50% Recycled/1 0% Post Consumer Paper NorthCarolina Mundy State Stormwater Management Systems Permit No. SW8 permit# 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 Warren G. Bailey, Bailey & Southstar, LLC Walgreen's Drugstore - Jacksonville, NC Onslow County FOR THE construction, operation and maintenance of both a dry detention basin and a sand filter 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 28, 2015, 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 and Section 1.7 on pages 3 and 4 of this permit. The stormwater control has been designed to handle the runoff from 59,449 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. Page 2 of 8 State Stormwater Management Systems Permit No. SW8 permit# 0 The following design criteria have been provided in the sand filter and must be maintained at design condition: a. Drainage Area, It': 0.83 Onsite, ft : 36,031 Offsite, ft2: None b. Total BLIA, ft2: 33,689 c. Design Storm, inches: V d. TSS removal efficiency: 90% e. Depth, ft: f. Width, ft: g. Length, ft: h. Bottom Elevation, FMSL: i. Surface Area, ft2: j. Storage Volume, ft3: k. Top of Sand, FMSL: I. Weir Elevation, FMSL: m. Grate Elev., FMSL: n. Controlling Orifice: o. Receiving Stream/River Basin p. Stream Index Number: q. Classification of Water Body: Sediment Chamber Sand Chamber 2.64 1.5 2.5 2.5 123.66 123.66 32.17 32.17 309 309 816 464 n/a 34.6 35.17 n/a 37.0 37.5 1 @4" 0 Mill Creek / White Oak 19-9 "SC, NSW" Page 3 of 8 State Stormwater Management Systems Permit No. SW8 permit# 7. The following design criteria have been provided in the dry detention basin and must be maintained at design condition: a. Drainage Area, Acres: 0.69 Onsite, ft : 30,000 Offsite, ftZ: None b. Total Impervious Surfaces, ftZ: 25,760 C. Design Storm, inches: 1 d. Bottom Elevation, FMSL: 34 e. Permitted Surface Area, ftZ: 2,007 f. Permitted Storage Volume, ft3: 2,593 g. Storage Elevation, FMSL: 36.3 h. Controlling Orifice: 0.50" 0 pipe i. Additional BMP: Grassed Swales j. Receiving Stream/River Basin: Mill Creek / White Oak k. Stream Index Number: 19-9 I. Classification of Water Body: "SC, NSW" II. SCHEDULE OF COMPLIANCE 1. The stormwater management system shall be constructed in its entirety, vegetated and operational for its intended use prior to the construction of any built -upon surface. 2. During construction, erosion shall be kept to a minimum and any eroded areas of the system will be repaired immediately. 3. The permittee shall at all times provide the operation and maintenance necessary to assure the permitted stormwater system functions at optimum efficiency. The approved Operation and Maintenance Plan must be followed in its entirety and maintenance must occur at the scheduled intervals including, but not limited to: a. Semiannual scheduled inspections (every 6 months). b. Sediment removal. C. Mowin.9 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. Page 4 of 8 State Stormwater Management Systems Permit No. SW8 permit# 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. III. 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. Page 5 of 8 State Stormwater Management Systems Permit No. SW8 permit# 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 the 28`h day of June, 2005. NORTH-CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION 4 ` A an lime , P. irecto�r Division of Water Quality By Authority of the Environmental Management Commission Page 6 of 8 AAC NORRIS, KUSKE &TUNSTALL CONSULTING ENGINEERS, INC. June 28, 2005 Ms. Rhonda Hall, Environmental Engineer NC DENR Division of Water Quality Water Quality Section 127 Cardinal Drive Extension Wilmington, NC 28405-3845 Re: Walgreen's Drug Store SW8 041130 Jacksonville, NC NKT Project No. 03308 Dear Ms. Hall: J. Phillip Norris, P.E. John A. Kuske, III, P.E. John S. Tunstall, P.E. J.A. Kuske, P.E. of Counsel Please find enclosed two (2) copies of the revised calculations for the sand filter volume and surface areas provided. Also enclosed are two (2) copies of revised plan Sheet C4.5 depicting the cross sections on which -We calms. Please contact us if you have any further questions or comments. Thank you for your assistance on this project. Sincerely, NORRIS, KUSKE & TUNSTALL CONSULTING ENGINEE , INC. ��011 Kent P. Harrell, P.E. KPH/asn 03308 06-28-05-s-sw response-ttr cc: Warren Bailey / Bailey & Southstar, LLC Jason Hood / Dalton Moran Robinson Architecture, PLLC 902 Market Street • Wilmington, NC 28401-4733 0 Phone: 910.343.9653 • Fax: 910.343.9604 NORRIS, KUSKE &TUNSTALL CONSULTING ENGINEERS, INC, June 22, 2005 Ms. Rhonda Hall NC DENR Division of Water Quality Water Quality Section 127 Cardinal Drive Extension Wilmington, NC 28405-3845 Re: Permit Modification for SW8 041130 Issued 02-04-05 Walgreen's Drug Store Jacksonville, NC NKT Project No. 03308 Dear Ms. Hall: J. Phillip Norris, P.E. John A. Kuske, III, P.E. John S. Tunstall, P.E. J.A. Kuske, P.E. of Counsel JUN 2 S euO Thanks for your timely review and phone call yesterday. This submittal is prepared relative to the items we discussed. A list of the items (in italics) and my response follows: Item No. 1: The calculations list the weir elevation as 36.3 feet (for drainage structure A2), however the detail on Sheet C4.1 shows the elevation as 36.8 feet. Response: The detail has modified to display the weir elevation of 36.3 feet for the structure A2 detail on Sheet C4.1. The enclosed "Extended Dry Detention Basin Supplement" has been updated. Item No. 2: A larger, drainage map with areas highlighted is needed. Response: A 1" = 20' scale drainage map with highlighted areas and data is enclosed. This is to replace all previous drainage maps. Item No. 3: The original application lists 63,790 SF of impervious area, however the current submittal lists 59,449 SF of impervious area. What accounts for the difference? Response: Item 6 if the application is amended with the attached Drainage Area Table (Drainage Area 3) to account for the entire 1.82 acre tract and the impervious surface areas included. The 63,790 SF of drainage area was the total amount of impervious surface within the property boundaries. Of the 63,790 SF total, 59,449 SF impervious area drains to the two BMP's proposed for the site. The remaining impervious area bypasses the BMP's. The site impervious area is proposed to increase by 48 SF to accommodate a concrete pad adjacent to Henderson Drive. The new total 902 Market Street • Wilmington, NC 28401-4733 • Phone: 910.343.9653 • Fax: 910.343.9604 Ms. Rhonda Hall / NC DENR June 22, 2005 Page 2 impervious area of the site is 63,838 SF. The impervious area draining to the BMP's remains 59,449-SF. Sheet C1.1 is revised to reflect this change. The concrete sidewalk area (including the new 48 SF pad) draining directly to the right of way is approximately 2,773 SF. The driveway aprons will create 1,616 SF impervious area draining directly off the site. The total amount of impervious area proposed to drain directly off the site is 4,389 SF. The attached drainage table summarizes the areas draining directly off the site. Please note the proposed dry basin and sand filter are sized to capture the remaining 59,449 SF impervious area per best management practices. Please find enclosed two (2) revised plan Sheets C1.1 and C4.1, two (2) copies of the Drainage Area Table Supplement to the Division of Water Quality Stormwater Management Permit application, and two (2) copies of the revised Extended Dry Detention Basin Supplement form. Please contact us if you have any questions or comments. Thank you for your assistance on this project. Sincerely, NORRIS, KUSKE & TUNSTALL CONSULTING ENGINEER , INC. Kent Harrell, P.E. KPH/asn 03308 06-22.05-s-sw response-Itr cc: Warren Bailey / Bailey at Southstar, LLC Jason Hood / Dalton Moran Robinson Architecture, PLLC NORRIS, KUSKE &TUNSTALL CONSULTING ENGINEERS, INC. June 6, 2005 Ms. Rhonda Hall NC DENR Division of Water Quality Water Quality Section 127 Cardinal Drive Extension Wilmington, NC 28405-3845 r Re: Permit Modification for SW8 041130 Issued 02-04-05 Walgreen's Drug Store Jacksonville, NC NKT Project No. 03308 Dear Ms. Hall: J. Phillip Norris, P.E. John A. Kuske, III, P.E. John S. Tunstall, P.E. J.A. Kuske, P.E. of Counsel JUN 0 c, 7005 ;y�SuJ & al! 3vD a On February 4th, 2005 DWQ issued the stormwater permit for four (4) dry detention basins to be constructed at this site. We desire modification of this permit to replace three (3) dry detention basins with one (1) sand filter. We will retain the primary dry detention basin. Please find enclosed two (2) sets of plans, one (1) set of calculations, the revised Division of Water Quality Stormwater Management Permit application, the revised Extended Dry Detention Basin Supplement form, the executed Sand Filter Operation and Maintenance Plan, and a $420.00 check for the processing fee. Please contact us if you have any questions or comments. Thank you for your assistance on this project. Sincerely, NORRIS, KUSKE & TUNSTALL CONS''ULLTTING ENGINEERS, I KU Kent Harrell, P.E. KPH/asn 03308 06-06-05-s-sw-mod.-Ilr cc: Warren Bailey / Bailey & Southstar, LLC Jason Hood / Dalton Moran Robinson Architecture, PLLC 902 Market Street • Wilmington, NC 28401-4733 0 Phone: 910.343.9653 • Fax: 910.343.9604 NKT #03308 State of North Carolina Department of Environment and Natural Resources Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM p, 4A Q This form may be photocopied for use as an original I. GENERALINFORMATION I. Applicants name (specify the name of the corporation, individual, etc. who owns the project): Bailev & Southstar. LLC 2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance) Warren G. Bailey, Member 3. Mailing Address for person listed in item 2 above: State: Telephone Number: (910) 346-8443 p: 4. Project Name (subdivision, facility, or establishment name — should be consistent with project name on plans, specifications, letters, operation and maintenance agreements, etc.): Walgreen's Drugstore - Jacksonville, NC 5. Location of Project (street address): Road Jacksonville County: Onslow 6. Directions to project (from nearest major intersection): Proceed NE from intersection of US 17 & NC 24 On us 17 in Jacksonville 1.4 miles, turn left on Gum Branch Road and go NW 1.6 miles to Intersection w/ Henderson. Site on north corner 7. Latitude: 340 47' 06" Longitude: 770 25' 29" of project 8. Contact person who can answer questions about the project: Name: Kent Harrell, P.E. Telephone Number: (910) 343-9653 II. PERMIT INFORMATION 1. Specify whether project is (check one): New Renewal X Modification Form SWU-101 Version 3.99 Page 1 of 4 2. If this application is being submitted as the result of a renewal or modification to an existing permit, list the Existing permit number SW8 041130 And its issue date (if known) February 4, 2005 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. 111. PROJECT INFORMATION 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. Site is redevelopment of existing paved lot and former gas station. Runoff is directed to a sand filter and a dry detention basin, then to the public piped system. Runoff from the roof drains directly through roof drains to the dry detention basin. 2. Stormwater runoff from this project drains to the White Oak River Basin. 3. Total Project Area: 1.82 AC 5. How many drainage areas does the project have? 2 4. Project Built Upon Area: 80 % 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. A 1.3 fBasi'&1nf6rmation' h'114p1 i'$I! 14kl ICI ,llipmt ryllh ODraina"e Area 1 ° t i:ii�Miiti[i,Draina elAtea2ih 4011H16 Receiving Stream Name MITI Creek Mill Creek Receiving Stream Class SC; NSW SC; NSW Drainage Area 30,000 SF / 0.69 AC 36,031 SF / 0.83 AC Existing Impervious * Area 30,000 SF / 0.69 AC 36,031 SF / 0.83 AC Proposed Impervious* Area 25,760 SF / 0.59 AC 33,689 SF / 0.77 AC % Impervious* Area total 85.7% 93% jm ervious*SurfaceiAreaV01hwl�uiiJifi i J6lihiu kii:uuuu�Draina''eArea l 11 ,j. 11 ,Drain igArea2, On -site Buildings 14,820 SF 10.34 AC N/A On -site Streets N/A N/A On -site Parking 10,940 SF 10.25 AC 33,669 SF 10.77 AC On -site Sidewalks N/A N/A Other on -site N/A N/A Off -site N/A N/A Total: 25,760 SF / 0.59 AC Total: 33,689 SF 10.77 AC • 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/A 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. I. The following covenants are intended to ensure ongoing compliance with state stormwater management permit number SW8 041130 as issued by the Division of Water Quality. These covenants may not be changed or deleted without the consent of the State. 2. No more than N/A 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 ofswimming pools. 3. Swales shall not be filled in, piped, or altered except as necessary to provide driveway crossings. 4. Built -upon area in excess ofthe permitted amount requires a state stormwater management permit modification prior to construction. 5. All permitted runofffrom outparcels or future development shall be directed into the permitted stormwater control system. These connections to the stormwater control system shall be performed in a manner that maintains the integrity and performance of the system as permitted. By your signature below, you certify that the recorded deed restrictions and protective covenants for this project shall include all the applicable items required above, that the covenants will be binding on all parties and persons claiming under them, that they will run with the land, that the required covenants cannot be changed or deleted without concurrence from the State, and that they will be recorded prior to the sale of any lot. V. SUPPLEMENT FORMS The applicable state stormwater management permit supplement form(s) listed below must be submitted for each BMP specified for this project. Contact the Stormwater and General Permits Unit at (919) 733-5083 for the status and availability of these forms. Form SWU-102 Form SWU-103 Form SWU-104 Form SWU-105 Form SWU-106 Form SWU-107 Form SWU-108 Form SWU-109 Wet Detention Basin Supplement Infiltration Basin Supplement Low Density Supplement Curb Outlet System Supplement Off -Site System Supplement Underground Infiltration Trench Supplement Neuse River Basin Supplement 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. 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 to • One copy of the applicable supplement form(s) for each BMP ^Kp(f • Permit application processing fee of $420 (payable to NCDENR) • Detailed narrative description of stormwater treatment / management • Two copies of plans and specifications, including: p - 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) VII. AGENT AUTHORIZATION If you wish to designate authority to another individual or firm so that they may provide information on your behalf, please complete this section. Kent P. Harrell. P.E. Designated agent (individual or firm): Norris, Kuske & Tunstall Consulting Engineers, Inc. Mailing Address: City: 902 Market Street Phone: (910) 343-9653 VRI. APPLICANT'S CERTIFICATION State: NC Zip: 28401 Fax: (910) 343-9604 I, (print or type name of person listed in General Information, item 2) Warren G. Bailey, Member Certify that the information inclu ed on this permit application form is, to the best of my knowledge, correct and that the project will b /const- o rmance with the approved plans, that the required deed restrictions and protective covenant,�will r rded d thaj�the proposed project complies with the requirements of 15A NCAC 2H.1000. � l/ Signature: Form SWU-101 Version 3.99 Page 4 of 4 Date: (o-1-05 Drainage Area Table Supplement Additional Drainage Basin Information Areas On -site Proposed to Bypass the BMP's Drainage Basin C Basin lnfortitation " Drainage Area 3. Receiving Stream Name Mill Creek Receiving Stream Class SC; NSW Drainage Area 13,068 SF / 0.30 AC Existing Impervious * Area 8,712 SF / 0.20 AC Proposed Impervious* Area 4,389 SF / 0.10 AC % Impervious* Area (total) 33.5% Impervious* Surface Arca _;_ Drainage Area 3 17 On -site Build in s N/A On -site Streets N/A On -site Parkin (Driveways) 1,616 SF / 0.04 AC On -site Sidewalks 2,725 SF / 0.06 AC Other on -site 48 SF / 0.001 AC Off -site N/A 'total: 4,389 SF / 0.10 AC KPH/asn 03308 06-22-05-s-sw drainage supp. Permit No. Uk(Th (To be provided by DWQ) Ke q KPj ][I. 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, November, 1995) and Administrative Section 15A 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 written justification. /2A a. The basin captures the runoff from the 1 year, 24 hour storm and releases it over a period of 48 hours X� b. OR the basin captures the runoff from the 1 inch storm and allows it to draw down over a period of 2-5 days. /C C. The minimum flow length ratio is 3:1, L:W. d. Basin sideslopes are no steeper than 3:1. e. A small permanent pool has been provided at the outlet to reduce clogging. k f. Cleanout access has been provided, sufficient for heavy equipment. PI1 g. A drain has been provided which will completely empty the basin for cleanout. jzfh. Sufficient volume has been provided for any local government peak flow requirements. i. If the basin was used during construction as a sediment basin or trap, it must be cleaned out to design specifications prior to operation as a dry detention basin. yy' j. A vegetation plan has been prepared by a N.C. licensed professional. Consideration must be given to the grasses specified due to the frequent inundation. k. The basin must be stabilized within 14 days of construction. 77m,1. The design provides for the sediment storage in addition to the detention volume that is equal to 20% of the detention volume. in. Inlet and outlet channels have been protected from scour during high flows from large storms. n. In areas of easily erodible soils, an additional plunge pool at the inlet has been provided, or riprap is used as an energy dissipator. o. A forebay to capture sediment is recommended to make cleanout easier. P. The basin is located in uncompacted natural soils. q. The seasonal high water table is located at least 1 foot below the bottom of the extended dry detention basin. Z&r. An additional BMP (such as a swale or vegetated filter) has been designed to operate in conjunction with this dry detention basin to meet the required minimum 85% TSS removal. Permit No.SGJ $ 04 113 0 Al o b (To be provided by D{VQ) EXTENDED DRY DETENTION OPERATION AND MAINTENANCE AGREEMENT The extended dry detention system is defined as the dry detention basin, forebay, and the required additional BMP. This system (check one) 0 does tkdoes not incorporate a vegetated filter. This system (check one) 0 does 01 does not incorporate non-integrated pretreatment. Maintenance activities shall be performed as follows: 1. All grassed areas of the basin shall be mowed at least twice annually, more frequently as needed. 2. Debris must be removed from the basin, outlet and orifice whenever it accumulates or at least twice annually. 3. Annually- inspect the basin after a rain event to ensure it is functioning properly. 4. Repair any erosion of the side slopes and around the inlets and outlet immediately. 5. Accumulated sediment shall removed if it has reduced the available volume to 75% of the original depth." 6. The emergency spillway shall be kept in good working order. 7. Woody vegetation shall be removed from the banks. 8. Any areas of the system found to be deficient shall be repaired or replaced to design standards. 9. Written records of the inspections and maintenance activities shall be kept on file. I acknowledge and agree by my signature below that I am responsible for the performance of the above maintenance procedures. I agree to notify DWQ of any problems with the system or changes in the name of the project, responsible party, or address. Printname:Warren G. Bailey Phone: 910- Signature: Title: Member 910-346-8637 Date: 6-7- 05 I, W a4_ "'" Y• V: . ,,e t ols a Notary Public for the State of N0,41 CJcL, L.i._Z , County of do hereby certify that L-� rra-/., 6 , (30` personally appeared before me this the -14A_ day of f Zoo 5 and acknowledge the due execution of the forgoing dry detention basin maintenance requirements. Witness my hand and official seal, SigTA nature aa3 •' IOd _* 9` WS g aao _ My Commission expires 8 /8'0% cpL ' ••'v„ • .• . ,.: » _ . ��. ;' .. x� � .-' NKT #03308 Permit No. &jF 6!�1130 JYUZ (7o be provided by D111v State of North Carolina Department of.Environnlent and Natural Resources Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION EXTENDED DRY DETENTION BASIN SUPPLEMEr 77ds form may be photocopied for use as an original. DWO Stormwater Management Plan Review: A complete stormwater management plan submittal includes a dry detention basin supplement for each basin, design calculations, plans and specification showing all basin and outlet structure details, and a fully executed operation and maintenance agreement. I. PROJECT INFORMATION (Please complete the following information) Project Name: Walgreen's Drug Store - Jacksonville, NC Contact Person: Kent Harrell P.E. Phone Number: 910-343-9653 For projects with multiple basins, specify which basin this worksheet applies to: A Design Storm: 1 " (Please choose either the 1 yr, 24 hr storm, or the 1 " storm) Drainage Area:_3 0, 0 0 0 square feet Built -upon Area: 25,760 square feet Required Volume: z, oo3 cubic feet SHWT elevation: 35: 0 +/— FMSL Basin Dimensions: Irregular * Bottom Elevation: 3 4 feet, MSL Area: fl long x ft wide = 248 fly * Storage Elevation: 3 6.3 feet, MSL Area: Irregular long x fl wide= 2 , 0 07 fly *. Detention Volume Provided: -� cubic feet Sediment Storage Provided: N/A cubic feet (Equivalent to 20% of the detention volume) O Drawdown Orifice: 0 7T" Vertical Orifice (Please (ndicate size and t}pe of orifice) Additional BMP to achieve 85% TSS (check one): (;Grassed swale 0 Vegetated Filter 0 Other State Stormwater Permit No. Sfa S d Y'f t '0 V o l Applies to System No. SAND FILTER OPERATION AND MAINTENANCE PLAN Regular maintenance is essential to the long-term performance and durability of the sandfilter, as it is with all stormwater BMP's. Depending on the types of activities occurring within the drainage area, most sand filters will show a decreased capacity for filtration after a few years. At least once a year, each filter must be inspected after a V design storm event to determine if the filter bed is passing the runoff within 24 hours. 2. If the filter is not passing the runoff completely within 24 hours,, the first 2"-3" of discolored sand must be removed and replaced with new sand. The removed sand must be dewatered and disposed of properly. 3. At the same time that maintenance is performed on the sand chamber, the sediment chamber should be pumped and cleaned. The removed sediment should be dewatered and disposed of properly. 4. At least once every quarter, check that the orifice is clear. I acknowledge and agree by my signature below that I am responsible for the performance of the maintenance procedures listed above. I agree to notify DWQ of any problems with the system and prior to any changes to the system or the responsible party. Print name Address Phone: Signature Note: The legally responsible party should not be a homeowners association unless more than 50% of the lots have been sold and a resident of the subdivision has been named the president. I, L� `� T, �a `i ^At cL3 , a Notary Public for the State of County of C>.aloz, do hereby certify that U—w,"ak G f32� personally appeared before me this the IJA-- day of 2.e oS and acknowledge the due execution of the foregoing saM filter maintenance requirements. Witness my hand and icial seal, 3 •'apSA ft)EJUtMy commission expires'k.0Z._jO0BVX o. yy�� � � .. ,; ., .. „ .. .. , , r . .. ... _ , �: .. ... .. .. �, �. �t.• .. ,., • � � 1 • . a � L. a J I r F �.. �1: r� " r . .. .. l ".. r . I .. �. l+ . .. F. � � r � �, i a n Date Design ' NORRIS, KUSKE & TUNSTALL sheet 902Market St. CONSULTING ENGINEERS, INC. Wilmington, N.C.28401 Of Check Job �/ t <<i(S For I/� � z C`1LC i',/ Job No. 3 309 7C) / 4-9 zo 14 2-,O ISISO 3c;�l7sF �.69dc) i�TMP =( 2576� /3v, �,Yiav gs 7"/0 _)y 91�-0 V C(2E;? cOSrx0 60 xo_ZJx ��"(' 2)=_2oo3CF s To�Z �rr6 P1200005O (� ST YE 3� _ 3 �sE£ 16iv kOu ING� Vot,014e PP-011ae0 = 20/3 U7 �6EsCI21PT/ v OgelllC,- TD r-1Z-7 2 3 6, 031 J9. 934) -3 - 6'99 (0, 77,jz�-) SCE / 7 (K- 0 rL7-6-12 TVILLE WALGREENS\dwg\03308 Current.dwg, 10:57:20 AM, �I m; o �A NORRIS, KUSKT-,&=rUNsrALI owNEwoEVELoaER: BPILET l• $�UTH$TPR, LI G DRAINAGE MAP a y i i O p CONSULTING HNGINIiI RS, INC. o6-owesreRN6Lvo. �1 u co 902 MARKET STREET PRONE (010)34&9W4 JAG(90NNLLE. NC 26546 �yALGREEN DRUG STORE WLLMINGTON, NC,26401 FAX 01010409604 91p'�968443 JgCKSONVILLE, NORTH CAROLINA Walgreens Jacksonville NKT #03308 6/6/2005 Page 1 Basin A Engineer KPH Routing Pre -Development Runoff Coefficient, C Hydraulic Length, L .... .. ... . ft Elevation Change, H 2� fit Watershed Area, A acres Time of Concentration, Tc 4.34 min 10-yr Intensity, 1 7.34 in/hr 50-yr Intensity, 1 9.05 in/hr 10-yr Flow, Qa 1.02 cis 50-yr Flow, Qa 1.26 cis Post -Development Impervious Area 0.59i acres Runoff Coefficient, C 0.84 Hydraulic Length, L 355 ft Elevation Change, H Area, A 0.69 acres Time of Concentration. Tc 5.28 min 10-yr Intensity, 1 7.14 in/hr 50-yr Intensity, 1 8.83 in/hr 10-yr Flow, Qp 4.18 cfs 50-yr Flow, Op 5.17 cfs dO, 10 yr storm 3.16 cfs dQ. 50 yr storm 3.91 cfs 1 st Inch Required Storage 2000 cu It Time to Peak 10-yr Storm Depth (P) 4.80 in 50-yr storm depth (P) 6.40 in Soil Curve Number (CN) . .... ...... . . 70. SCS Curve Number (CN) 94 Soil Storage Capacity (S) 0.64 10-yr Runoff Depth (0') 4.10 in 10-yr Runoff Volume (V) 10280 cu ft 50-yr Runoff Depth (0*) 5.69 in 50-yr Runoff Volume (V) 14242 cu ft Tc = (L3/H)o ... 1128 1 = 2521(30+Tc) I = 338/(33+Tc) 0 =CIA 0 =CIA Tc = (L3/HPm'/128 I = 2521(30+Tc) I = 338/(33+Tc) Q=CIA Q = CIA 6 hr runoff 6 hr runoff S = 1000/CN - 10 0' = [(P-0.2-S)]A2/(p + 0.8*S) V = Q*A Q* = [(P-0.2*S )]A 2/(P + 0.8*S) V = Q*A 10-yr Time to Peak (Tp) 29.48 min Tp = V11.39Qp 50-yr Time to Peak (Tp) 33.04 min Tp = V/1.390p NKT Progect 03308 Walgreens at Jacksonville, NC 26-Apr-05 Stage Storage Function of Basin Permanent Pond Level i 34:00'.ff S z CONTOUR INCR ACCUM CONTOUR AREA VOL VOL STAGE In S InZ Zest (sq it) [cu 11] [cu ft] [ft] 34.00 248 0 0 000 0.0000 0.0000 0,0248 3500 509 509 1.00 6.2324 0,0000 1.0060 36.00 1,361 1,066 1,575 2.00 7.3617 0.6931 1,9676 37.00 1,684 3,259 3.00 8.0890 1,0986 3.0310 b.1 b (in (S2/S,)]/Iln (Z2/Zl)l Ks K, = S2/Z25 Walgreens Jacksonville NKT #03308 6/6/2005 Paget Basin A Engineer KPH Routing Inflow Hydrograph, 10-yr storm t < 1.25 Tc Q (1) = Qp/2'(I-ws(pi*t1Tp)) W, t > 1.25 Tc 0 = 4.34'0p*eXp(-1.3*(trrp)) Permanent Level 34.00 it 10,000fe. � Q �6414. Riser Length t;cto it CIO. Pipe Diameter in Peak Outflow ..... . : , cfs " Elevation 3*3IdYt Elevation 34.00 A Peak Stage , 3690 It 4 SEA Weir Coe( 3.00 Orif, Coal. 0.52 Orif. Cost. 0.60 Q Pre -Development 1.02 Peak Inflow 4.18 Pond Bank :3 Riser 2 Length . . .. .. I'm It Barrel Onf. Coat 0.65 Top El. it Di , ameter : in Dot. El. 44.0011 Elevation 0 Weir Coof 3.00 Number 1.00 Orif. Cost. 0.60 Int: .:�.o Tp= 29.48 Riser 2 Riser 2 Riser Riser Riser Structure Total Time I Orn Storage Stage Ctrl Pipe Weir Oriface Outflow Weir OrIface Outflow Total Barrel Outflow min CIS cu it Ift Cis cis CIS cfs cis CIS Cie cis cfs cis 0 0.00 0.00 34.00 0.00 0.00 0,00 0.00 0.00 0.00 0.00 0.00 1.28 0.00 3 6.10 0.00 34.00 0.00 0.00 OM 0.00 0.00 0.00 0.00 0.00 1.28 0.00 6 0.40 18.10 34.14 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.01 1.85 0.01 9 0.96 87.47 34.35 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.01 2.86 0.01 12 1.44 237.66 34.64 0.02 0.00 0.00 0.00 0.00 0.00 0.00 0.02 4.41 0.02 15 2.09 490.08 34.98 0.02 0.00 0.00 0.00 0.00 0.00 0.00 OM 5.92 0.02 18 2.74 855.97 35.37 0.03 0.00 0.00 0.00 0.00 0.00 0.00 0.03 7.13 0.03 21 3.32 1335.41 35.78 0.03 0.00 0.00 0.00 0.00 0.00 0.00 0.03 8.23 0.03 24 3.78 1917.26 36.21 0.03 0.00 0.00 0.00 0.00 0.00 0.00 0.03 9.23 0.03 27 4.08 2580.30 36.64 0.04 0.00 0.00 0.00 1.77 8.41 1.77 1.81 10.13 1.81 29 4.18 2981.56 36.88 0.04 0.00 0.00 0.00 3.93 10.96 3,93 3.96 10.60 3.96 32 4.08 3019.83 36.90 0.04 0.00 0.00 0.00 4.15 11.16 4.15 4.19 10.64 4.19 35 3.78 3000.00 36.89 0.04 0.00 0.00 0.00 4.04 11.06 4.04 4.07 10.62 4.07 38 3.35 2948.44 36.86 0.04 0.00 0.00 0.00 3.73 10.77 3.73 3.77 10.56 3.77 41 2.94 2873.57 36.81 ODAI 0.00 0.00 0.00 3.31 10.35 3.31 3.34 10.48 3.34 44 2.58 2902.16 36.77 0.04 0.00 0.00 0.00 2.91 9.92 2.91 2.95 10.40 2.95 47 2.27 2737.31 36.73 0.04 0.00 0.00 0.00 2.56 9.50 2.56 2.60 10.32 2.60 50 1.99 2678.29 36.70 0.04 0.00 0.00 0.00 2.26 9.11 2.26 2.29 10.25 2.29 53 1.75 2624.53 36.67 0.04 0.00 0.00 0.00 1.99 8.73 1.99 2.03 10.19 2.03 56 1.53 2575.52 36.64 0.04 0.00 0.00 0.00 1.75 8.37 1.75 1.79 10.13 1.79 59 1.35 2530.82 3661 0.04 0.00 0.00 0.00 1.54 8.02 1.54 1.58 10.07 1.58 62 1.18 2490.02 36.58 0.04 0.00 0.00 0.00 1.36 7 69 1.36 1.39 10.02 1.39 65 1.04 2452.74 36.56 0.04 0.00 0.00 0.00 1.20 7.37 1.20 1.23 9.97 1.23 68 0.91 2418.67 36.54 0.04 0.00 0.00 0.00 1.05 7.06 1.05 1.09 9.93 1.09 71 0.80 2387.50 36.52 0.04 0.00 0.00 0.00 0.93 6.77 0.93 0.96 9.89 0.96 74 0.70 2358.97 36.60 0.04 0.00 0.00 0.00 0.82 6.49 0.82 0.85 9.85 0.85 77 0.62 2332.83 36.49 0.04 0.00 0.00 0.00 0.72 6.22 0.72 0.75 9.82 0.75 80 0.54 2308.88 3647 0.04 0.00 0.00 0.00 0.63 5.96 0.63 0.67 9.79 0.67 83 0.48 2286.92 36.46 0.04 0.00 0.00 0.00 0.56 5.71 0.56 0.59 9.76 0.59 85 0.42 2266.76 36.44 0.04 0.00 0.00 0.00 0.49 5.47 0.49 0.52 9.73 0.52 all 6.37 2248.24 36.43 0.04 0.00 0.00 OM 0.43 5.23 0.43 0.46 9.71 0.46 91 0.32 2231.23 36.42 0.04 0.00 0.00 0.00 0.38 5.01 0.38 0.41 9.68 0.41 94 0.28 2215.58 36.41 0.03 0.00 0.00 0.00 0.33 4.80 0.33 0.36 9.66 0.36 97 0.25 2201.18 36.40 0.03 0.00 0.00 0.00 0.29 4.59 0.29 0.32 9.64 0.32 100 0.22 2187.92 36.39 0.03 0.00 0.00 0.00 0.25 4.39 0.25 0.29 9.62 0.29 103 6.19 2175.69 36.38 0.03 0.00 0.00 0.00 0.22 4.20 0.22 0.26 9.61 0.26 106 0.17 2164.41 36.38 0.03 0.00 0.00 0.00 0.19 4.01 0.19 0.23 9.59 0.23 109 0.15 2153.99 36.37 0.03 0.00 0.00 0.00 0.17 3.83 0.17 0.20 9.58 0.20 112 0.13 2144.36 36.36 OM 0.00 0.00 0.00 0.15 3.65 0.15 0.18 9.56 0.18 115 0.11 2135.45 36.36 0.03 0.00 0.00 0.00 0.13 3.48 0.13 0.16 9.55 0.16 118 0.10 2127.19 36.35 0.03 0.00 0.00 0.00 0.11 3.32 0.11 0.14 9.54 0.14 121 0.09 2119.53 36.35 0.03 0.00 0.00 0.00 0.09 3.15 0.09 0.13 9.53 0.13 124 ODS 2112,41 36.34 0.03 0.00 0.00 0.00 0.08 2.99 0.08 0.11 9.52 0.11 127 0.07 2105.78 36.34 0.03 0.00 0.00 0.00 0.07 2.84 0.07 0.10 9.51 0.10 130 0.06 2099.60 36.33 0.03 0.00 0.00 0.00 0.06 2.68 0.06 0.09 9.50 0.09 133 0.05 2093.83 36.33 0.03 0.00 0.00 0.00 0.05 2.53 0.05 0.08 9.49 0.08 136 0.05 2088.42 36.33 0.03 0.00 0.00 0.00 0.04 2.38 0.04 0.07 9.48 0.07 139 0.04 2083.35 36.32 CM 0.00 0.00 0.00 0.03 2.23 0.03 0.07 9.48 0.07 142 0.04 2078.57 36.32 0.03 0.00 0.00 0.00 0.03 2.07 0.03 0.06 9.47 0.06 Date Design A NORRIS, KUSKE &TUNSTAL,L 902 Market St. Sheet 1( `�� CONSULTING ENGINEERS, INC. Wilmington, N.C. 28401-4733 Of 1— Check Job 5A.N0 For WA L 6-T EEN l� Job No. COL L1MC- C.41-000ATIONs I Jl+0ks0NV1LZ-E 0330E 1) PICASC CISgC6-Azf) PZ0V10c1) 1/O00lic AIV-0 Sup-OC6 14P(- A 2- of 9 OX7-cri 61r/OS (SSE THC F-OLGOWIA1G z) NLFflS[-- T f]e Crass seCTia,1V a"WIN& 5lfCc7- -2 or 9 &f7Cp 6/s/05. CI s C THE NC C koss s e6T/Ows AA '�No r36 Pnovwa ij ON P"'A/ srJc-Cr c 4-s 0,4-rC--0 6/2-6/0s. P000060 VOLVv(LG ANO -500-AEC AkEz X Of�" SAX RLTEI2 �SCpINICNT CNA,V113E2 LIMU,yC mull EC> [2. P DG6-P x 2.5 PI WIbC x 12 3.66 4?� LONG] _ S EDl�1 EN7 Cf Ifl,�l3C�Z 50tZr, 6 E OCA /�lZr7�ld�t� C2. S -Fr W/06 x / 2 3.66 -P- 691VCr� _ SAND FILTE9 CHAM815E 110LUN1E PXVIjJi513 /. S 44 IOEEp x 2. S -0- bvjpE x / 2 3 C6 4�4 L()Alq = SAV10 P" TCIZ CA4`196P-' 5UrrA6C ,A ( /-9le-OI/100 �2-e r- - WIDE x /23. c6 ('f z-wc] = 8 / C_ I6-CF -3oq_1SSF 463.73-CF 3o2 iSF 03 305 '54wis sH&T12 Design �J NORRIS, KuSKE & TUNSTALL Sheet /�� 902MarketSt. CONSULTING ENGINEERS, INC. Wilmington, N.C.28401 Of Check Job 5,1VO f7Z_j-EQ For (A1,,AL¢/LC6N5 Amr� --;'" IobNo�' TjC.ccsoNU/u.0 '`p -5(ImnA PC �s � TOTAL DRIJ-IIV46-C AEC-14 m SIWVFI�"31 TOZ-4-L�- = a�:8 ES 33. /1CI-6 Z,IpC2110tcs = D Ke6S ( 336Se.S /'11,Ulr1UN1 2CQUI/ZCO VOW11C /Wo Sukr1l6E SCpIM�NI' Ctl,�/ti6Cr �OLU,MC = �4�G. � CF r S 60111CtiT C. H/-h,8 C2 SUPOC-C M-CA = 2 '?" , 5 SF SAND FI1-TCP C Hkg66P VOLU/1 E = .y 46 7 C � 1S, 0 Oz-Tc-"lz. SG(gf&C. SF fZ &5ol SE.o 61'*O'5 — f t�CO VOLV✓15 At1l) 5-61prj4Ge ,mc� Or SAND CP, - 5 01W7NT G t3 crz (2. 3 / jq OCEP x S E'pI,M-01-r Cff1f11BCi2 S (2. 5 -F4 w106 x 123. C6 t G) 5,40 r1LTG'C aJA,MBE OLwA4 E �l. S F'd aCEP x 2.5 WIDE x /Z- . C6 49 VOL Ul1 C PROV/Olf-0 -IqL wIOC x I �3.6b wvV60 _ 3Q9. ° -- SF = 4,0 , $- CF 2. ZeC x /23. 6K -R LOAVG)S 14 P-C- - A#0 VOL U11 CCS P�V(/?E /) EET 11NO cxc rc-� 71-I C �WI140 � 2EaU-l2GrlEAiZS 30g_2 SF Date Deslgn Sheet IVORRIS, KuSKE a TUNSTALL 3 5 K�� 1902 Market St. CONSULTING ENGINEERS, INC. Wilmington,N.C.28401 Of o% Check Job e F fL'� For oj (�qire/ yl Job No. )-ST .Tac%son it NC o3sc)� ,SAV0.r-1ZJ Ciz SC- 01P vT CHMISQ -f- S/W-O Pt l'C-E CH41YBEP scD CHmleclz. • vaU/gc SyO cF/14CPC of D&UffCrCC Y;6E/4 °POSITIVE DQIMAGE TO 56D CH,tgSC-k PlpFp az SuRtroE, 007-LCT -M SAD 614vS 2 0/VC �' SHEcr F-Lal ScD cgsmn To sIwo r code SET F-0/2 PA-2K11V6- LaT- 00-11 -&-E S/JNO (W TC/z Ca &69 - Vo/-u14E 1? s4-0 c-VAC2E 6.1?/4I06-C f1REA • DEP-M 0r SAHIB � / 8 / / SOD POF-T/CCES 2mn? JY6 Dlh, S URF�CC 3,Z SrlAcec C�,lTZ Er 7 a OWWA/ F-iZ 7Cez C(21c1PLrIaV s V 2-t H/?S 11.11 11WI' I 12 54NO lfewC" P/PE Dat Design :S���etJIB/�j sign NORRIS, KUSKE a TuNSTALL 902MarketSt. CONSULTING ENGINEERS, INC. Wilmington, N.C.28401 Check Job S N� For (1/41 &71Z6CIV5 Job No. lJ,PWAY66 /fUX S DA .'e>_.. TO -FA(, 14-P- C_ 10 3 0 S F rMpolvicus Jf2EA = 3366g.9V9e- (,?.77- 1/0L 56V C /9C S-fOCF ,fCoz ) = q-4 6,70 ; CF- ,; c �zF SE"CJ C1�62 j60 5 'Z ` 2 S, SF itGZ�= W L H • r w.. 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Wilmington, N.C.28401 !/k' Check Job s eNb r/ L7-CIZ For t'V41-6K66N5 Job No. CROSS s6Cr1OA1aQ T(cSotM&1-67 0330g 1-1419 NOLC- t1IN. Cvv6lz CURQ=NLCr 56C C49 lnl6- WT-hL- n N0 Ex r -, IvOGR ` Tr m 1' wIE2 I -AN 35.17 _ CGCl/. 39:6/ 10/v wo�Ed r1 i;r6rz SA AID r Al F. ,1.:/- TCrC C I-I.AMigrtz z. S' —2 -+ I1-1( r N'A + # 97 W-06-0 57-L7N6 /' 00 66 7 2,71 7 z, q-'10 OUC P-IP6-s �rNV. 3 81 9o°CLh,�vJ Cr-1,eM8E2 6 '10 fIDPE PffF-o1MTr0 SOU< PIPE 7 S°O.0 SG-CrroN BE CROSS SC6T101-V r. 37 R►M 36:5/TOP Fo oT6/L #- 4 k66A-Q /2'0.. CAC14 Wrr r Date Desll/gn NORRIS, KuSKE a TUNSTALL Sheet S��l'OS KA�) 902MarketSt. CONSULTING ENGINEERS, INC. Wilmington,N.C.28401 Of - Check Job S14/U0 r/ L7-6 1For /� L (-V 2CC Job No. C C)UT- ET 067-IJI L VJV�c/C.SU✓VVI ��G- 03s�� rJ ZO G060 d121'i ;) MfiNHocC i21NU 4co�G� CO uc12E7-6 CW6�(Zs, }� �I N(�r exTEN0FZ /. 3�. s TOP films- � STGcc 261NEJaccP 4"pv(�- P1pFs o crl�1 11/��CS 2 4"oc ,I AA) = 3 5.17 .rNv z S�lp CUNCI2GT(- � x 0.66 wI C2 o 2. u 'n/oN Z5 di01/6N rA13klc 1z" Wlt?C FcoH/ VAacy Fob i J5 {2Gp -T NV 32.5 F0 o-rc BO77-0/1 or FOOTF2 Olo pE soup ,1'/VV 32, s secrlod 1,-A SAwO Cl LTC- g OUTLC7" O»o9 Scenario: Base IDpV po/V o To L)j 1,#bG7" NtI d 7" Title: 03308 Walgreens Doc Project Engineer: NKT f:\...\calculations\03308 da a pipes 6-2-05.stm Andrew 8 Kuske Consulting Engineers Storn-CAD v5.5 [5.5003] O6/02/05 06:15:47 PM 0 Haest d Methods, Inc. 37 Brookside Road Waterbury, CT 06708 USA +1.203-755-1666 Page 1 of 1 p R Y Pv NO 7-0 DOT .TN't-C:— Scenario: Base NKT PipelNode Design Review Label Upstream Down- Section Length Average Total Full Pipe Hydraulic Upstream Upstream Average Upstream Downstream Upstream Node stream Size (it) Velocity System Capacity Slope Slope Ground Hyd. Grade Pipe Invert Invert Inlet Node (f's) Flow (cfs) (Rift) (Rift) Elevation (ft) Cover Elevation Elevation Area (cfs) I(it) (it) (ft) (ft) (acres) P-4 DI-A2 DOT 115 inch 183.00 2.60 3.19 5.27 0.006667 ).002439 38.00 36.40 2.86 33.50 32.28 0.69 Title: 03308 Walgreens fA... \calculations\03308 da a pipes 6-2-05.stm Andrew & Kuske Consulting Engineers 06/02/05 06:12:46 PM ®Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 USA -1-203-755-1666 03W, 5 , '-� A f0 5 Project Engineer: NKT StormCAD v5.5 15.50031 Page 1 of 1 DRV POA10 TO DOT FILET 03�O8 Scenario: Base 10 Yk STv2N1 NKT PipelNode Design Review Label Upstreanr Down- Section Length Average Total Full Pipe Hydraulic pstrea Upstream Average Upstream Downstream Upstream Node stream Size (ft) Velocity System Capacity Slope Slope Ground Hyd. Grade Pipe Invert Invert Inlet Node IWO Flow (Cfs) (fUft) (fUft) Elevation (ft) Cover Elevation Elevation Area (cfs) (ft) (ft) (ft) (ft) (acres) P4 01-A2 DOT 15 inc 183.00 3.20 3.92 5.27 0.006667 ).003687 38.00 36.62 2.86 33.50 32.28 0.69 Title: 03308 Walgreens 1:\... \calculations\03308 do a pipes 6-2-05.stm Andrew 8 Kuske Consulting Engineers O6102105 06.12.26 PM ®Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 USA +1-203-755-1666 Project Engineer: NKT StormCAD v5.5 [5.5003) Page i of 1 MN TO 007 iN<< r. Scenario: Base ? 5 VIZ 57-00 N+ NKT Pipe\Node Design Review Label Upstrea Down- Section Length Average Total Full Pipe Hydrauli pstrea Upstream Average Upstream Downstream Upstream Node stream Size (ft) Velocity System Capacity Slope Slope Ground Hyd. Grade Pipe Invert Invert Inlet Node (ft/s) Flow (cfs) (f /ft) (ft/ft) Elevation (ft) Cover Elevation Elevation Area (CIS) (ft) (ft) (ft) (ft) (acres) P-4 DI-A2 DOT 15 inch 183.00 3.60 4.42 5.27 0.006667 ).004685 38.00 36.81 2.86 33.50 1 32.281 0.69 Title: 03308 Walgreens f:\...\calculations\03308 da a pipes 6-2-05.stm Andrew & Kuske Consulting Engineers O6/02105 06: 12:01 PM ® Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 USA +1-203-755-1666 U SS 3Cc,/ r�i��l.1J Project Engineer: NKT StormCAD v5.5 [5.5003) Page 1 of 1 DRY A21V19 To /7J1 i V667- 0330Z Scenario: Base 5O Y12 NKT Pipe\Node Design Review Label Upstrea Down- Section Length Average Total Full Pipe Hydrauli pstrea Upstream Average Upstream Downstream Upstream Node stream Size (ft) Velocity System Capacity Slope Slope Ground Hyd. Grade Pipe Invert Invert Inlet Node (ft/s) Flow (cfs) (ft/ft) (fift) Elevation (ft) Cover Elevation Elevation Area (cfs) (ft) (ft) (R) (ft) (acres) P4 DI-A2 I DOT 15 inch 183.00 3.92 4.81 5.27 0.006667 ).005550 38.00 36.97 2-861 33.501 32.281 0.69 Title: 03308 Walgreens f:V..\calculations\03308 da a pipes 6-2-05.stm Andrew & Kuske Consulting Engineers 06/02/05 06:10:25 PM 0 Haeslad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 USA +1-203-755-1666 Project Engineer: NKT StormCAD v5.5 [5.5003) Page 1 of 1 03305 CI-7 Q0) W• Scenario: Base 1-5 -Cl -1 CI-2 P-5 CI-3 Title: 03308 Walgreens f:\...\calculations\03308 pipes 6-2-05.stm Andrew & Kuske Consulting Engineers 06/02/05 03:05:40 PM ® Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 USA -1-203-755-1666 Q,0 'NN CI-4 Project Engineer: NKT StormCAD v5.5 [5.5003] Page 1 of 1 1. To 5,4410 FlC7CZ Scenario: Base O3 so z Z - YjZ ST012/1 NKT Pipe\Node Design Review Label Upstrearr Node Down- stream Node Section Size Length (ft) Average Velocity (ft/s) Total System Flow (CIS) Full Capacity (cfs) Pipe Slope (ft/ft) Hydraulic Slope (fttft) Upstreaff Ground Elevation (ft) Upstream Hyd. Grade (ft) Average Pipe Cover (ft) Upstream Invert Elevation (ft) Downstream Invert Elevation (ft) Upstream Inlet Area (acres) P-1 B1 DOT 15 inch 18.00 2.95 3.62 6.81 0.011111 1003141 37.00 35.06 2.95 32.40 32.20 0.00 P-2 SF Bt 15 inch 35.00 2.97 3.64 3.45 0.002857 3.003176 37.00 35.17 3.30 32.50 32.40 0.00 P-3 Cl -1 SF 12 inch 7.00 3.03 2.38 3.01 0.007143 3.004471 37.00 35.20 2.77 33.25 33.20 0.13 P4 CI-2 CI -1 12 inch 26.00 2.34 1.84 3.49 0.009615 3.002662 37.00 35.27 2.63 33.50 33.25 0.12 P-5 CI-3 CI-2 12 inch 110.00 1.69 1.33 3.04 0.007273 0.001386 37.00 35.42 2.10 34.30 33.50 0.12 P-6 CI-4 CI-3 12 inch 56.00 3.59 0.76 3.53 0.009821 J.000092 37.00 35.43 1.43 34.85 34.30 0.17 P-7 CI-5 SF 12 inch 8.00 10.48 128 12.91 0.131250 3.000908 37.00 35.17 2.27 34.25 33.20 0.13 P-8 CI-6 CI-5 12 inch 36.00 0.93 0.73 5.14 0.020833 3.000421 37.00 35.19 2.37 34.00 33.25 0.06 P-9 CI-7 CIE 12 inch 77.00 3.17 0.46 3.63 0.010390 3.000131 37.00 35.18 1.60 34.80 34.00 0.10 _OTAL O-Z3 Title: 03308 Walgreens f\.. \calculations\03308 pipes 6-2-05.stm Andrew& Kuske Consulting Engineers 06/02/05 03:49: 15 PM ®Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 05708 USA +1-203-755-1666 Project Engineer: NKT StormCAD v5.5 (5.5003] Page 1 of 1 /3A5 /N 6 To s)tNO rI O-C/Z Scenario: Base 0330� / D - Ylz ST02/1 NKT PipelNode Design Review Label Upstream Node Down- stream Node Section Size Length (ft) Average Velocity (f 1s) Total System Flow (cfs) Full Capacity (cfs) Pipe Slope (ft/ft) Hydraulic Slope (ft/ft) Upstream Ground Elevation (ft) Upstream Hyd. Grade (ft) Average Pipe Cover (ft) Upstream Invert Elevation (ft) Downstream Invert Elevation (ft) Upstream Inlet Area (acres) P-1 81 DOT 15 inch 18.00 3.67 4.50 6.81 0.011111 ).004862 37.00 35.09 2.95 32.40 32.20 0.00 P-2 SF Bt 15 inc 35.00 3.69 4.52 3.45 0.002857 ).004901 37.00 35.26 3.30 32.50 32.40 0.00 P-3 Cl -1 SF 12 inch 7.00 3.77 2.96 3.01 0.007143 ).006897 37.00 35.31 2.77 33.25 33.20 0.13 P4 CI-2 CI-1 12 inch 26.00 2.90 2.28 3.49 0.009615 ).004096 37.00 35.41 2.63 33.50 33.25 OA2 P-5 CI-3 CI-2 12 inch 110.00 2.08 1.63 3.04 0.007273 ).002100 37.00 35.64 2.10 34.30 33.50 0.12 P-6 CI-4 CI-3 12 inch 56.00 3.80 0.94 3.53 0.009821 ).000570 37.00 35.68 1.43 34.85 34.30 0.17 P-7 CI-5 SF 12 inch 8.00 2.02 1.58 12.91 0.131250 ).001973 37.00 35.27 2.27 34.25 33.20 0.13 P-8 CIE CI-5 12 inch 36.00 1.15 0.90 5.14 0.020833 ).000639 37.00 35.30 2.37 34.00 33.25 0.06 P-9 CI-7 CIE 12 inch 77.00 3.37 0.57 3.63 0.010390 ).000032 37.00 35.30 1.60 34.80 34.00 0.10 Title: 03308 Walgreens f:\...\calculations\03308 pipes 6-2-05.stm Andrew & Kuske Consulting Engineers O6/02/05 03:49.42 PM 0 Hassled Methods, Inc. 37 Brookside Road Waterbury, CT 06708 USA +1-203-755-1666 Project Engineer: NKT StormCAO v5.5 [5.5003[ Page 1 of 1 13.11511V 6 TO 5,00 f I LT(51L Scenario: Base Z 5 - Ya STWLh NKT Pipe\Node Design Review Label Upstream Node Down- stream Node Section Size Length (ft) Average Velocity (ft/s) Total System Flow (cfs) Full Capacity (cfs) Pipe Slope (ft/ft) Hydraulic Slope (ft/ft) Upstream Ground Elevation (ft) Upstream Hyd. Grade (ft) Average Pipe Cover (ft) Upstream Invert Elevation (ft) Downstream Invert Elevation (ft) Upstream Inlet Area (acres) P-1 B1 DOT 15 inch 18.00 4.11 5.04 6.81 0.011111 ).006091 37.00 35.11 2.95 32.40 32.20 0.00 P-2 SF 61 15 inch 35.00 4.12 5.06 3.45 0.002857 ).006134 37.00 35.32 3.30 32.50 32.40 0.00 P-3 Cl -1 SF 12 inch 7.00 4.21 3.31 3.01 0.007143 ).008629 37.00 35.38 2.77 33.25 33.20 0.13 P-4 CI-2 Cl -1 12 inch 26.00 3.25 2.55 3.49 0.009615 ).005119 37.00 35.52 2.63 33.50 33.25 0.12 P-5 CI-3 CI-2 12 inch 110.00 2.32 1.82 3.04 0.007273 ).002609 37.00 35.80 2.10 34.30 33.50 0.12 P-6 CI-4 CI-3 12 inch 56.00 1.35 1.06 3.53 0.009821 ).000881 37.00 35.85 1A3 34.85 34.30 0.17 P-7 CI-5 SF 12 inch 8.00 2.28 1.79 12.91 0.131250 1002520 37.00 35.34 2.27 34.25 33.20 0.13 P-8 CI-6 CI-5 12 inch 36.00 1.29 1.02 5.14 0.020833 ).000813 37.00 35.37 2.37 34.00 33.25 0.06 P-9 CI-7 CI-6 12 inch 77.00 3.48 0.64 3.63 0,010390 ).000143 37.00 35.38 1.60 34.80 34.00 0.10 Title: 03308 Walgreens f:\...\calculations\03308 pipes 6-2-05.stm Andrew 8 Kuske Consulting Engineers 06/02/05 03:56:48 PM ® Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 USA +1.203-755-1666 0330 Project Engineer: NKT Storm CAD v5.5 [5.5003] Page 1 of 1 f� ,51 AI 19 To 5,ilgq F-1L i c-1, Scenario: Base SO- Y/Z-57011/ 1 NKT Pipe\Node Design Review Label Upstream Node Down- stream Node Section Size Length (ft) Average Velocity (fus) Total System Flow (cfs) Full Capacity (cfs) Pipe Slope (ft/ft) Hydraulic Slope (tuft) Upstream Ground Elevation (ft) Upstream Hyd. Grade (ft) Average Pipe Cover (ft) Upstream Invert Elevation (ft) Downstream Invert Elevation (ft) Upstream Inlet Area (acres) P-1 B1 DOT 15 inch 18.00 4.49 5.51 6.81 0.011111 ).007285 37.00 35.13 2.95 32.40 32.20 0.00 P-2 SF Bt 15 inch 35.00 4.51 5.53 3.45 0.002857 ).007331 37.00 35.39 3.30 32.50 32.40 0.00 P-3 Cl -1 SF 12 inch 7.00 4.61 3.62 3.01 0.007143 ).010312 37.00 35.46 2.77 33.25 33.20 0.13 P-4 CI-2 Cl -1 12 inch 26.00 3.55 2.78 3.49 0.009615 ).006113 37.00 35.62 2.63 33.50 33.25 0.12 P-5 CI-3 CI-2 12 inch 110.00 2.53 1.98 3.04 0.007273 ).003102 37.00 35.96 2.10 34.30 33.50 0.12 P-6 CI-4 CI-3 12 inch 56.00 1.47 1.15 3.53 0.009821 ).001043 37.00 36.02 1.43 34.85 34.30 0.17 P-7 CI-5 SF 12 inch 8.00 2.48 1.95 12.91 0.131250 ).002995 37.00 35.41 2.27 34.25 33.20 0.13 P-8 CI-6 CI-5 12 inch 36.00 1.41 1.11 5.14 0.020833 ).000964 37.00 35.45 2.37 34.00 33.25 0.06 P-9 CI-7 CI-6 12 inch 77.00 3.57 0.70 3.63 0.010390 1000240 37.00 35.46 1.60 34.80 34.00 0.10 Title: 03308 Walgreens f:\...\calculations\03308 pipes 6-2-05.stm Andrew & Kuske Consulting Engineers 06/02/05 02*59*44 PM m Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 USA +1-203-755-1666 Project Engineer: NKT StormCAD v5.5 (5,5003] Page 1 of 1 04/27/2005 WED 11:42 FAI 910 343 9604 Norris, Kuske, Tunstall �001/004 NORRIS, KUSKE &TUNSTALL CONSULTING ENGINEERS, INC. April 26, 2005 Ms. Rhonda Hall NC DENR Division of Water Quality Water Quality Section 127 Cardinal Drive Extension Wilmington, NC 28405-3845 Re: Plan Modification Walgreen's Drug Store Jacksonville, NC NKT Project No. 03308 Dear Ms. Hall: J, Phillip Norris, RE, John A Kuske, III, P.E. John S. Tunstall, P.E. JA Kuske, P.E. of Counsel Thanks for your time and understanding yesterday. Per our discussion, we are enclosing a proposed drainage map. You had indicated this was the most critical piece of information to provide in addition to a letter with the facts of the situation. DWQ Issued Permit No. SW8 041130 on February 4, 2005 based in part on the plan revision R7 dated February 4, 2005 by Larry Sneeden, P.E. The approved stormwater plan and permit was forwarded to the contractor (Steve Brodie of WIMCO). The project was conditionally released for construction by the City of Jacksonville prior to the issuance of Storrnwater Permit SW8 041130. 1 believe the construction release by the City of Jacksonville was basically for the building foundation. This plan (R7) never reached the City of Jacksonville. Last Thursday Jacksonville City officials discovered the City approved plan dated January 4, 2004 (R6) was not the plan the contractor was following. City of Jacksonville officials then issued a stop work order with the exception of the building. Mr. Ryan King, Senior Planner, City of Jacksonville can give you additional details or can be contacted at 910-938-5293 to verify the facts as I have presented them. The current state of the construction is as follows in accordance with the DWQ approved plan (R7): 1. The building is 25% complete with finish floor W. 2. The drainage pipes and inlets are constructed. 3. The water lines are constructed. 4. The area is cleared and graded. 902 Market Street • Wilmington, NC 28401.4733 • Phone: 910.343.9653 - Fax. 910.343.9604 -. 04/27/2005 WED 11,42 FAX 910 343 9604 Norris, Kuske, Tunstall f 002/004 Ms. Rhonda Hell / NC DENR April 26, 2005 Page 2 5. Neither the curb and gutter or asphalt is installed yet The city planning issues that impact the DWQ approved plan (R7) are as follows: 1. The city requires a 12-foot wide trail within public easement located on the site outside the right of way along Henderson Drive. 2. Fencing Is required around all stormwater detention basins per city code. Fencing around the detention area near the intersection of Gum Branch and Henderson Drive is prohibited by NC DOT sight distance requirements regardless of depth or nature of the surface basin. 3. The City minimum parking requirement Is 75 spaces. 75 spaces total were provided. 4. The two detention areas on the north side of the site are acceptable provided fencing and landscaping are installed. Given these issues please consider the following modifications and the reasons for them: 1. Less parking spaces and / or rearrangement of the parking lot will not meet the City standards on parking lots therefore a reduction of impervious surfaces is not allowed. 2. Detention Basin B near the intersection of Gum Branch and Henderson Drive is prohibited since the City requirement for a pond fence contradicts the NC DOT minimum sight distance requirements. This is Basin B on the DWQ permit with 480 CF of storage and 17,500 SF of impervious area. We propose to reduce the impervious surface down to 12,941,48 SF by grading the parking lot differently. See the attached drainage map. Additional grading Is not possible given the surrounding grades offsite and the fact that the finish floor of the building has been set. A grassed swale is proposed In this area so that some minimum treatment will occur. 3. Detention adjacent to Henderson Drive is not allowed given that ADA (handicap) grades apply to the trail and the area is too small with the 12-foot wide deduction from the site for the trail. A grassed swale can be provided and the drainage area will continue to receive some treatment. The treatment volume is reduced by the loss of the roadside detention area. The proposed Impervious surface area to detention Basin A is 46,112.43 SF. The DWQ permit lists the detention area to Basin A as 48,120 SF. I believe the 46,120 SF erroneously counted the driveway apron in the Henderson Drive right of way. The proposed detention volume for this drainage area (Basin A) is 3,194 CF accounting for a 236 CF reduction from the DWQ permitted volume of 3,430 CF. 04/27/2005 WED 11.43 FAX 910 343 9604 Norris, Euske, Tunstall 2003/004 Ms. Rhonda Hell / NC DENR April26, 2005 Page 3 I need verification as we discussed that only grass is allowed in the storage volume portion of the dry basins to develop a new landscape plan. Please consider this request favorably given this is redevelopment with a reduction of impervious area and the facts of the situation. Since a stop work order Is in effect and the design Engineer no longer works at this firm, a timely resolution is critical for the Clty, the Contractor, and our firm. We intend to follow this up with a modification submittal package upon receiving your comments. Please contact us if you have any further questions or comments. Thank you for your assistance on this project. Sincerely, NORRIS, KUSKE & TUNSTALL CONSULTING ENGINEERS, INC. Kent Harrell, P.E. KPH/asn 033M 04.26-05-aaw plan mWAr 1 - Q J I Q Q w U cc ' A5E O 1 f TOTAL AREA = 23.519.48 3F Q p a O Z I TOTAL IMPERVIOUS - 23,519.48 SF �� !j Q Q 8 j Ck W Z J J, r:¢2' S�'-i: y'a`..p..�"`.�•,'�F::..:i._Y.�ti?'w. _.:.' i W Z � Y 3 AB1 ` TOTALAREA m 1145113O' BULD8IG Wo M7 8 13.141.483F FEE. W i �.4 TOTAL IMPERVIOUS 8M. 14820 SF o / = 12,941.48 SF CANOPY 725 SF A5B TOTAL 15.545 SF TOTAL AREA ti +� ? =5,229.823F d TOTAL IMPERVIOUS t=5,229.82 SF v: K vu om NO ' O* am TOTAL AREA :t =5,156.743E 1 � TOTAL IMPERVIOUS I A3A = S,OS6J4 SF ----------r Z 0 I ,j t... TOTAL AREA = 1 ,936.39 3F C 0 , z + hTOTAL IMPERVIOUS= 12,308.39 SF I �� prw ulI). `�• I o I (IN Em 03308 } C. PM OlnSS Ci