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HomeMy WebLinkAboutSW8081114_HISTORICAL FILE_20090402STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO. SW8 DOC TYPE ❑ CURRENT PERMIT ❑ APPROVED PLANS HISTORICAL FILE ❑ COMPLIANCE EVALUATION INSPECTION DOC DATE loolNO2 YYYYMMDD t NCDENR North Carolina Department of Environment and Natural Resources Division of Water Quality Beverly Eaves Perdue Colleen H. Sullins Dee Freeman Governor Director Secretary April 2, 2009 Jeff Beaudoin PO Box 538 Hampstead, NC 28443 Subject: State Stormwater Management Permit No. SW8 081114 Hampstead Business Park High Density Commercial Wet Detention Pond Project Pender County Dear Mr. Beaudoin The Wilmington Regional Office received a complete Stormwater Management Permit Application for Hampstead Business Park on February 20, 2009. 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 and Session Law 2008-211. We are forwarding Permit No. SW8 081114 dated April 2, 2009, for the construction of the subject project. This permit shall be effective from the date of issuance until April 2, 2019, and shall be subject to the conditions and limitations as specified therein. Please pay special attention to the Operation and Maintenance requirements in this permit. Failure to establish an adequate system for operation and maintenance of the stormwater management system will result in future compliance problems. If any parts, requirements, or limitations contained in this permit are unacceptable, you have the right to request an adjudicatory hearing upon written request within thirty (30) days following receipt of this permit. This request must be in the form of a written petition, conforming to Chapter 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 Steve Pusey, or me at (910) 796-7215. --- Sincerely, �-�s� Georgette Scott Stormwater Supervisor Division of Water Quality GDS/ sgp: S:\WQS\STORMWATER\PERMIT\081114.apr09 cc: Garry S. Pape, PE — GSP Consulting, PLLC Derek Roberts - Withers & Ravenel Pender County Building Inspections Steve Pusey LW ilmLl�gton-Reg io n al-Office� Central Files Wilmington Regional Office 127 Cardinal Drive Extension, Wilmington, North Carolina 28405 \ Phone: 910-796-7215 \ FAX: 910-350-2004 \ Customer Service 1-877-623-6748 \\\\\\\\\\))) Internet w .nmaterquahtyorg An Equal Oppodunity \ Affirmative Action Employer NorthCarolina Naturally State Stormwater Management Systems Permit No. SW8 081114 STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF WATER QUALITY STATE STORMWATER MANAGEMENT PERMIT HIGH DENSITY COMMERCIAL 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 Jeff Beaudoin, Owner Hampstead Business Park Country Club Road, Hampstead, Pender County FOR THE construction, operation and maintenance of a wet detention pond in compliance with the provisions of 15A NCAC 2H .1000 and Session Law 2008-211 (hereafter collectively referred to as the "stormwater rules') 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 2, 2019, 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 1.8 on page 3 of this permit. The stormwater control has been designed to handle the runoff from 594,878 square feet of impervious area. The subdivision is permitted for eight (8) lots, each limited to a maximum amount of built -upon area as indicated in Section 11.15 (f) of this permit, and per approved plans. 3. A 50' wide vegetative buffer must be provided adjacent impounded structures, streams, rivers and tidal waters. 4. Each lot within the subdivision, whose ownership is not retained by the permittee, must submit a separate Offsite Stormwater Management Permit application package to the Division of Water Quality and receive a permit prior to any construction on the lot. 5. 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. Page 2 of 9 State Stormwater Management Systems Permit No. SW8 081114 The runoff from all built -upon area within the permitted drainage area(s) of this project must be directed into the permitted stormwater control system. The following design criteria have been provided in the wet detention pond and must be maintained at design condition: a. Drainage Area, acres: Onsite, ft : Offsite, ft2: b. Total Impervioul Surfaces, ft2: Onsite, ft : Offsite, ft2: C. Design Storm, inches: d. Average Pond Design Depth, feet: e. TSS removal efficiency: f. Permanent Pool Elevation, FMSl : g. Permanent Pool Surface Areq, ft h. Permitted Storage Volume, ft : i. Temporary Storage Elevation, FMSL: j. Pre-dev. 1 yr-24 hr. discharge rate, cfs: k. Controlling Orifice: I. Orifice flowrate, cfs: M. Permitted Forebay Volume, ft3: n. Fountain Horsepower o. Receiving Stream/River Basin: P. Stream Index Number: q. Classification of Water Body: II. SCHEDULE OF COMPLIANCE 27.5 1,197, 901 0 594,878 594,878 0 1.5 4.0 90% 27.2 91,244 170,524 28.85 2.634 5"0 pipe 0.49 67,569 1 hp UT Old Topsail Creek / CPF 18-87-12 "SA; HQW" (outside '/z mile) No homeowner/lot owner/developer shall fill in, alter, or pipe any drainage feature (such as swales) shown on the approved plans as part of the stormwater management system without submitting a revision to the permit and receiving approval from the Division. The permittee is responsible for verifying that the proposed built -upon area for the entire lot does not exceed the maximum allowed by this permit. Once the lot transfer is complete, the built -upon area may not be revised without approval from the Division of Water Quality, and responsibility for meeting the built -upon area limit is transferred to the individual property owner. If an Architectural Review Board or Committee is set up by the permittee to review plans for compliance with the BUA limit, the plans reviewed must include all proposed built -upon area. Any approvals given by the Board do not relieve the homeowner of the responsibility to maintain compliance with the permitted BUA limit. 4. 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. 5. 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 3 of 9 State Stormwater Management Systems Permit No. SW8 081114 6. 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 the approved plans, regardless of size. b. Project name change. C. Transfer of ownership. d. Redesign or addition to the approved amount of built -upon area. e. Further development, subdivision, acquisition, or sale of any, 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. 7. The permittee shall submit for approval, final site layout and grading plans for any permitted future development areas shown on the approved plans, prior to construction. 8. 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. 9. During construction, erosion shall be kept to a minimum and any eroded areas of the system will be repaired immediately. 10. 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. 11. 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. 12. The permittee shall at all times provide the operation and maintenance necessary to assure that all components of the permitted stormwater system function 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 re -vegetation of side slopes. d. Immediate repair of eroded areas. e. Maintenance of side slopes in accordance with approved plans. f. Debris removal and unclogging of structures, orifice, catch basins and piping. g. Access to all components of the system must be available at all times. 13. Records of maintenance activities must be kept by the permittee. The records will indicate the date, activity, name of person performing the work and what actions were taken. Page 4 of 9 State Stormwater Management Systems Permit No. SW8 081114 14. This permit shall become void unless the facilities are constructed in accordance with the conditions of this permit, the approved plans and specifications, and other supporting data. 15. Prior to the sale of any lot, the following deed restrictions must be recorded: a. The following covenants are intended to ensure ongoing compliance with State Stormwater Management Permit Number SW8 081114, as issued by the Division of Water Quality under NCAC 2H.1000. b. The State of North Carolina is made a beneficiary of these covenants to the extent necessary to maintain compliance with the Stormwater Management Permit. C. These covenants are to run with the land and be binding on all persons and parties claiming under them. d. The covenants pertaining to stormwater may not be altered or rescinded without the express written consent of the State of North Carolina, Division of Water Quality. e. Alteration of the drainage as shown on the approved plans may not take place without the concurrence of the Division of Water Quality. f. The maximum built -upon area per lot is listed in the table below: TRACT# LOT AREA s BUA (sf) 1 206,911 117,500 2 130,766 84,656 3 130,762 84,653 4 162,363 20,000 5 113,144 73,247 6 113,153 73,253 7 60,772 39,343 8 60,772 39,343 TOTAL 978,643 531,995 This allotted amount includes any built -upon area constructed within the lot property boundaries, and that portion of the right-of-way between the front lot line and the edge of the pavement. Built upon area includes, but is not limited to, structures, asphalt, concrete, gravel, brick, stone, slate, coquina and parking areas, but does not include raised, open wood decking, or the water surface of swimming pools. g. For those lots within CAMA's Area of Environmental Concern, where DCM calculates a different maximum lot built -upon area, the governing lot BUA shall be the most restrictive of the two numbers. h. All runoff on the lot must drain into the permitted system. This may be accomplished through providing roof drain gutters, which drain to the street, grading the lot to drain toward the street, or grading perimeter swales and directing them into the pond or street. Lots that will naturally drain into the system are not required to provide these measures. i. Built -upon area in excess of the permitted amount will require a permit modification. j. Each lot within the subdivision, whose ownership is not retained by the permittee, must submit a separate Offsite Stormwater Management Permit application package to the Division of Water Quality and receive a permit prior to any construction on the lot. k. If permeable pavement credit is allowed, the property owner must submit a request, with supporting documentation, to the permittee and receive approval prior to construction of BUA. I. A 50' wide vegetated buffer must be provided adjacent any impounded structures, streams, rivers and tidal waters on each lot. No built -upon area is allowed within this buffer. Page 5 of 9 State Stormwater Management Systems Permit No. SW8 081114 16. A copy of the recorded deed restrictions must be submitted to the Division within 30 days of the date of recording the plat, and prior to selling lots. The recorded copy must contain all of the statements above, the signature of the Permittee, the deed book number and page, and the stamp/signature of the Register of Deeds. 17. Prior to transfer of the permit, the stormwater facilities will be inspected by DWQ personnel. The facility must be in compliance with all permit conditions. Any items not in compliance must be repaired or replaced to design condition prior to the transfer. Records of maintenance activities performed to date will be required. 18. Decorative spray fountains will be allowed in the stormwater treatment system, subject to the following criteria: a. The fountain must draw its water from less than 2' below the permanent pool surface. b. Separated units, where the nozzle, pump and intake are connected by tubing, may be used only if they draw water from the surface in the deepest part of the pond. C. The falling water from the fountain must be centered in the pond, away from the shoreline. d. The maximum horsepower for the fountain's pump is based on the permanent pool volume. The maximum pump power for a fountain in this pond is 1 horsepower. 19. If permeable pavement credit is desired, the permittee must submit a request to modify the permit to incorporate such language as required by the Division of Water Quality. The request to modify must include a soils report identifying the type of soil, the Seasonal High Water Table elevation and the infiltration rate. Upon the successful completion of a permit modification, the individual lot owners that request to utilize permeable pavements must submit the necessary forms and documentation to the permittee and receive approval prior to construction of the permeable pavement. 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 completed Name/Ownership Change form signed by both parties, to the Division of Water Quality, accompanied by the supporting documentation as listed on page 2 of the form. The approval of this request will be considered on its merits and may or may not be approved. 2. The permittee is responsible for compliance with all permit conditions until such time as the Division approves a request to transfer the permit. 3. 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. 4. 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. 5. 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 requires} by this Division, such as the construction of additional or replacement stormwater management systems. Page 6 of 9 State Stormwater Management Systems Permit No. SW8 081114 6. 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. The permit issued shall continue in force and effect until revoked or terminated. The permit may be modified, revoked and reissued or terminated for cause. The filing of a request for a permit modification, revocation and re -issuance or termination does not stay any permit condition. 8. 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. 9. Approved plans and specifications for this project are incorporated by reference and are enforceable parts of the permit. 10. The issuance of this permit does not prohibit the Director from reopening and modifying the permit,, revoking and reissuing the permit, or terminating the permit as allowed by the laws, rules and regulations contained in Session Law 2006- 246, Title 15A NCAC 2H.1000, and NCGS 143-215.1 et.al. 11. The permittee shall notify the Division in writing of any name, ownership or mailing address changes at least 30 days prior to making such changes. 12. The permittee shall submit a permit renewal application at least 180 days prior to the expiration date of this permit. The renewal request must include the appropriate documentation and the processing fee. Permit issued this the 2nd day of April, 2009. NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION Division of Water Quality By Authority of the Environmental Management Commission Page 7 of 9 DWQ USE ONLY ' Date Received Fee Paid Permit Number / -/O - 1/117 1sol. 00 -46 to a & State of North Carolina Department of Environment and Natural Resources Division of Water Quality STORMWATER MANAGEMENT PERMIT APPLICATION FORM This form may be photocopied for use as an original I. GENERAL INFORMATION 1. Applicants name (specify the name of the corporation, individual, etc. who owns the project): 2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance): Jeff Beaudoin -Owner 3. Mailing Address for person listed in item 2 above: City:Hampstead State:NC Zip:28443 Phone: (910 ) 547-3781 Fax: (910 ) 790-5917 Email:iibeaudoin@msn.com 4. Project Name (subdivision, facility, or establishment name -should be consistent with project name on plans, specifications, letters, operation and maintenance agreements, etc.): Hampstead Business Park 5. Location of Project (street address): City:Hampstead County:Pender Zip: 6. Directions to project (from nearest major intersection): From Wilmington follow 17N, take right on Country Club Road project site is approximately ] 5 miles on the 7. Latitude:34° 23' 30" N Longitude:77° 39' 50" W of project 8. Contact person who can answer questions about the project: Name:Garry S. Pape, P.E. Telephone Number: (910 1 256-9277 Email:gpape@withersravenel.com II. PERMIT INFORMATION: 1. Specify whether project is (check one): /1 - ❑Renewal ❑Modification Form SWU-101 Version 09.25.08 Page I of 2. If this application is being submitted as the result of a renewal or modification to an existing permit, list the existing permit number and its issue date (if known) 3. Specify the type of project (check one): ❑Low Density ®High Density ❑Redevelop ❑General Permit ❑Universal SMP ❑Other 4. Additional Project Requirements (check applicable blanks; information on required state permits can be obtained by contacting the Customer Service Center at 1-877-623-6748): ❑LAMA Major ®Sedimentation/Erosion Control ❑404/401 Permit ❑NPDES Industrial Stormwater III. PROJECT INFORMATION 1. In the space provided below, summarize how stormwater will be treated. Also attach a detailed narrative (one to two pages) describing stormwater management for the project. This project drains to and is within 1/2-mile of SA waters, therefore the primary stormwater management device will be a wet detention pond. The volume generated from the difference in the pre & post for the 1-yr storm will be treated by this facility and the drawdown runoff will be directed to an infiltration area. 2. Stormwater runoff from this project drains to the Cape Fear River basin. 3. Total Property Area: 28.55 acres 4. Total Coastal Wetlands Area: 0.00 acres 5. Total Property Area (3) - Total Coastal Wetlands Area (4) = Total Project Area**:28.55 acres 6. (Total Impervious Area / Total Project Area) X 100 = Project Built Upon Area (BUA): 78 % 7. How many drainage areas does the project have?1 8. 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. For high density projects, complete the table with one drainage area for each engineered stormwater device. Basin Information - Drainage Area 1 Drainage Area'2 Receiving Stream Name UT to Old Topsail Creek Stream Class & Index No. SA;18-87-12 Total Drainage Area (sf) 1,197,901 On -site Drainage Area (sf) 1,197,901 Off -site Drainage Area (so 0 Existing Impervious* Area (sf) 0 Proposed Impervious*Area (so 594,878 % Impervious* Area (total) 49.7 Impervious* Surface Area Drainage Area 1 Drainage Area 2 On -site Buildings (so See Attached On -site Streets (sf) 54,527 On -site Parking (so See Attached On -site Sidewalks (so 8,356 Other on -site (so 531,995 (See Attached) Off -site (sf) 0 Total (so: 594,878 * Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas, sidewalks, gravel areas, etc. **Total project area shall be caludated to exclude Coastal Wetlands from use When calculating the built upon area percentage calculation. This is the area used to calculate overall percent project built upon area (BUA). Form SWU-101 Version 09.25.08 Page 2 of 4 9. How was the off -site impervious area listed above derived? Projects in Union County: Contact the DWQ Central Office staff to check to see ifyou project is located within a Threatened & Endangered Species watershed that may he subject to more stringent stornnrater regaireinems. IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS One of the following property 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. Forms can be downloaded from htto://h2o.enr.state.nc.us/su/bmp forms.htm - deed restrictions. Form DRPC-1 High Density Commercial Subdivisions Form DRPC-2 High Density Developments with Outparcels Form DRPC-3 High Density Residential Subdivisions Form DRPC-4 Low Density Commercial Subdivisions Form DRPC-5 Low Density Residential Subdivisions Form DRPC-6 Low Density Residential Subdivisions with Curb Outlets By your signature below, you certify that the recorded property restrictions and protective covenants for this project shall include all the applicable items required in the above form, 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 NC DWQ 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 Permitting Unit at (919) 807-6300 for the status and availability of these forms. Forms can be downloaded from htto://h2o.enr.state.nc.us/su/bmp forms.htm. Form SW401-Low Density Form SW401-Curb Outlet System Form SW401-Off-Site System Form SW401-Wet Detention Basin Form SW401-Infiltration Basin Form SW401-Infiltration Trench Form SW401-Bioretention Cell Form SW401-Level Spreader Form SW401-Wetland Form SW401-Grassed Swale Form SW401-Sand Filter Form SW401-Permeable Pavement Form SW401-Cistern Low Density Supplement Curb Outlet System Supplement Off -Site System Supplement Wet Detention Basin Supplement Infiltration Basin Supplement Underground Infiltration Trench Supplement Bioretention Cell Supplement Level Spreader/Filter Strip/Restored Riparian Buffer Supplement Constructed Wetland Supplement Grassed Swale Supplement Sand Filter Supplement Permeable Pavement Supplement Cistern Supplement Form SWU-101 Version 09.25.08 Page 3 of 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 Office. (Appropriate office may be found by locating project on the interactive online map at http://h2o.enr.state.nc.us/su/msi maps htm) 1. Please indicate that you have provided the following required information by initialing in the space provided next to each item. • Original and one copy of the Stormwater Management Permit Application Form • Original and one copy of the Deed Restrictions & Protective Covenants Form (if required as per Part IV above) • Original of the applicable Supplement Form(s) and O&M agreement(s) for each BMP • Permit application processing fee of $505 (Express: $4,000 for HD, $2,000 for LD) payable to NCDENR • Calculations & detailed narrative description of stormwater treatment/management • Copy of any applicable soils report • Two copies of plans and specifications (sealed, signed & dated), including: - Development/Project name - Engineer and firm -Legend - North arrow - Scale - Revision number & date - Mean high water line - Dimensioned property/project boundary - Location map with named streets or NCSR numbers - Original contours, proposed contours, spot elevations, finished floor elevations - Details of roads, drainage features, collection systems, and stormwater control measures - Wetlands delineated, or a note on plans that none exist - Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations - Drainage areas delineated - Vegetated buffers (where required) VII. AGENT AUTHORIZATION If you wish to designate authority to another individual or firm so that they may provide information on your behalf (such as additional information requests), please complete this section. (ex. designing engineer or firm) Designated agent (individual or firm):Withers & Ravenel, Inc Mailing Address:1410 Commonwealth Drive, Unit 101 City:Wilmington State:NC Zip:28403 Phone: (910 ) 256-9277 Fax: (910 ) 256-2584 Email:gpape@withersravenel.com VIII. APPLICANT'S CERTIFICATION I, (print or type name of person listed in General Infonnation, item 2) Leff Beaudoin certify that the information included on this permit application form is, to the best of my knowledge, correct and that the project will be constructed in conformance with the approved plans, that the required deed restrictions and protective covenants will be recorded, and that the proposed project complies with the requirements of 15A NCAC 2H .1000000... (/ givnahire- / YJ,////J /��� r)a l'a 11� �I 0% Form SWUA01 Version 09.25.08 Page 4 of WITHERS RAVEN®f!L'0PE§j02009maoFY ANswrm ENGINEERS IPLANNERS ISURVEYORS 1430 Commonwealth Drive, Suite ioi WILMINGTON, NORTH CAROLINA, 28403 (910)256-9277 FAX (910) 256-2584 TO: Steve Pusey NC Division of Water Quality 127 Cardinal Drive Ext. Wilmington, NC 284o5 WE ARE SENDING YOU ❑ Shop Drawings ® Copy of Letter DATE 02/20/0 loaNO. O3o8oZ49.00 AITEN11ON Steve Puse PHONE# RE Hampstead Business Park Stormwater Permit (Conventional) SW8o8iii ❑Attached ❑ Under separate covervia the following items: ❑ Prints S Plans ❑ Samples ❑ Specifications ❑ Change order ❑ Diskette ® Calculations COPIES DESCRIPTION 2 Sets of revised sheet C-3.2, C-4.2 & C-5 for state stormwater permit 2 Revised Copy of Pond calculations 2 Revised Wet Detention Supplement AX THESE ARE TRANSMITTED as checked below: ® For approval ❑ Approved as submitted ❑ For your use ❑ Approved as noted ❑ As requested ❑ Returned for corrections ❑ For review and comment ❑ ❑ FOR BIDS DUE ❑ PRINTS RETURNED AFTER LOAN TO US REMARKS: For review and aooroval. ❑ Resubmit copies for approval ❑ Submit copies for distribution ❑ Return corrected prints COPYTO: File SIGNED: - Garry S. Pape If enclosures are not as noted, kindly notify us at once. 40. r NCDENR North Carolina Department of Environment and Natural Resources Division of Water Quality Beverly Eaves Perdue Coleen H. Sullins Governor Director February 20, 2009 Jeff Beaudoin PO Box 538 Hampstead, NC 28443 Subject: 2nd Request for Additional Information Stormwater Project No. SW8 081114 Hampstead Business Park Pender County Dear Mr. Beaudoin: Dee Freeman Secretary The Wilmington Regional Office received a revised State Stormwater Management Permit Application for Hampstead Business Park on February 5, 2009. 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. Move label for "Level Spreader Detail" directly underneath the detail. J 2. On forebay rip -rap detail, change elevation of top of berm to 28.85'. It must be at least equal to the temporary pool elevation to properly direct the flow path under design conditions. .J 3. Improve detail of forebay rip -rap on plan view of pond, showing the length and width of the rip -rap area. Also, please clarify the elevation contours and labels to show where it breaks from permanent pool elevation to temporary storage elevation. J 4. Provide weir equation for forebay rip -rap (with bottom at 27.2' and top at 28.85'). 5. Please remember that a change to one number may have a domino effect on other numbers. Please check all plans, calculations and forms and make changes as needed. Please note that this request for additional information is in response to a preliminary review. The requested information should be received in this Office prior to March 13, 2009 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, email 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 Division is allowed 90 days from the receipt of a completed application to issue the permit. Wilmington Regional Office 127 Cardinal Drive Extension, Wilmington, North Carolina 28405 One Phone: 910-796-72151 FAX. 910-350-20041 Customer Service. 1-877-623-6748 North Carolina Internet wwa.nmalerquallty, org Naturally ra l`[ An Equal Opportunity l Affirmative Action Employer Jeff Beaudoin February 20, 2009 Stormwater Application No. SW8 081114 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) 796-7215 or email me at steven.pusey@ncmail.net. Sincerely, Steves��/ Environmental Engineer GDS/sgp: S:\WQS\STORMWATER\ADDINFO\2009\081114.feb09 cc: Garry S. Pape, Withers & Ravenel, Wilmington, NC Steve Pusey CWilmington_Regional-Office Page 2 of 2 Re: New contact info Subject: Re: New contact info From: Steve Pusey <Steven.Pusey@ncmail.net> Date: Thu, 19 Feb 2009 16:25:36 -0500 To: gpape@gsp-consulting.com Garry, Concerning the Hampstead Business Park project, I have the following comments on your submittal drawing detail sheet C-5. Please reference the following: 1. Move label for "Level Spreader Detail" directly underneath the detail. 2. On forebay rip -rap detail, change elevation of top of berm to 28.85'. It must be at least equal to the temporary pool elevation to properly direct the flow path under design conditions. 3. Improve detail of forebay rip -rap on plan view of pond, showing the length and width of the rip -rap area. Also, please clarify the elevation contours and labels to show where it breaks from permanent pool elevation to temporary storage elevation. 4. Provide weir equation for forebay rip -rap (with bottom at 27.2' and top at 28.85'). I will be sending an official "Add Info." letter to Withers & Ravenel with these comments. I suggest that you contact them in order to obtain a copy of it. Best regards, Steve Posey gpape cr,gsp-consulting.com wrote: Steve, Below is my new contact info. I appreciate you getting back to me and let me know if you have any comments. Thanks. - Garry Carry S. Pape, P.E. GSP CONSULTING, PLLC 700 Military Cutoff Road Suite 232 Wilmington, North Carolina 28405 703-499-3273 gp ap ena,gsp-consu l ti ng. c o m CONFIDENTIALITY NOTICE: This e-mail may contain confidential and priviledged material for the sole use of the intended recipient(s). Any review, use, distribution or disclosure by others is strictly prohibited. If you have received this communication in error, please notify the sender immediately by e-mail and delete the message and any file attachments from your computer Information given or attached herewith is provided for informational purposes only. GSP CONSULTING, PLLC cannot guarantee the accuracy of this data and assumes no responsibility for any liability incurred by the recipient from the use of this data. Any information used for engineering or surveying purposes must be vented by a licensed engineer or surveyor and can only be used if written permission is obtained from GSP CONSULTING, PLLC 1 of 2 2/19/2009 4:26 PM WITHERS &i RAVENEL ENGINEERS IPLANNERS ISURVEYORS 1410 Commonwealth Drive, Suite ioi WILMINGTON, NORTH CAROLINA, 28403 (930)256-9277 FAX (910) 256-2584 TO: Steve Pusey NC Division of Water Quality 12Z Cardinal Drive Ext. Wilmington, NC 284o5 WE ARE SENDING YOU ❑ Shop Drawings ® Copy of Letter ❑ Attached ❑ Prints ❑ Change order 10ITITIIRZ0011MTtR7A1N� IM ly � I �TiTIrA1L� DATE 02/0/O 10BND. o3o8o749.00 ATTENTION Steve Puse PHONE# RE: Hampstead Business Park Stormwater Permit (Conventional) SW808111 ❑ Under separate cover via the following items: E Plans ❑ Samples ❑ Specifications ❑ Diskette ® Calculations COPIES DESCRIPTION 2 Sets of revised plans for state stormwater permit 2 Copies of NCDWQ calculations 2 Revised Wet Detention Supplement i Comment Response Letter a vex �r FEB 0 5 2009 R THESE ARE TRANSMITTED as checked below: ® For approval ❑ Approved as submitted ❑ For your use ❑ Approved as noted ❑ As requested ❑ Returned for corrections ❑ For review and comment ❑ ❑ FOR BIDS DUE ❑ PRINTS RETURNED AFTER LOAN TO US REMARKS: and approval. ❑ Resubmit ❑ Submit ❑ Return copies for approval copies for distribution corrected prints COPY TO: Hie SIGNED: - Garry S. Pape If enclosures are notes noted, kindly notify us at once. HAMPSTEAD BUSINESS PARK STORMWATER NARRATIVE & CALCULATIONS February 5, 2009 a SEAL 031315 Ry S FEB 0 5 2009 BY:SW 8 GS/I 1¢ Withers & Ravenel, Inc. 1410 Commonwealth Drive, Suite 101 Wilmington, North Carolina 28403 (910) 256-9277 STORMWATER NARRATIVE HAMPSTEAD BUSINESS PARK PENDER COUNTY, NC SITE DESCRIPTION This +/- 28.55 acre site is located off Country Club Road in Pender County, North Carolina. The site drains to existing ditches located around the property. The project will consist of the construction of a commercial development and related site appurtenances. The proposed drainage area for this project is 27.5 acres and the total amount of impervious area draining to the stormwater management pond is 49.7%. SOILS The soils for this project consist of Leon (Hydrologic Soil Group B/D), Murville (Hydrologic Soil Group A/D) and Onslow (Hydrologic Soil Group B) complexes. The Leon soils are poorly drained soils on broad interstream areas, the Murville soils are very poorly drained soils in interstream areas and depressions and the Onslow soils are moderately well drained soils on slightly convex uplands. STORM DRAINAGE DESIGN The primary stormwater measure for this project is a proposed wet detention pond located in the eastern corner of the site. The stormwater will be conveyed via overland sheet flow and a closed conduit system to the proposed wet detention pond. Since this site is within 1/2-mile and drains to SA waters the proposed wet detention pond is designed to control and treat the difference in volume of runoff between the pre -development and post -development conditions for the 1-year 24-hour storm event. This volume will be drawn down within 5 days and be directed to an infiltration area adjacent to the pond. Higher storm events will bypass the infiltration area and drain directly to the existing ditch located on the property boundary. The site drains to an unnamed tributary of Old Topsail Creek (classification SA) that drains to the Cape Fear River once leaving the site by existing ditches and existing storm culverts. Velocity Calculations for flow over Spillway Friction Method Manning Formula Solve For Roughness Channel Slope 0.00500 Tuft Normal Depth 0.29 ft Left Side Slope 300 ft/ft (H.V) Right Side Slope 3.00 ft/ft (H:V) Bottom Width 50.00 ft Discharge 23.69 ft3/s '«C ,.., '.. `''t d ; Tr:� -Y' } i ri Roughness Coefficient 0.028 Flow Area 14.75 ft- Wetted Perimeter 51.83 ft Top Width 51.74 ft Critical Depth 0.19 It Critical Slope 0.02042 ft/ft Velocity 1.61 ft/s Velocity Head 0.04 ft Specific Energy 0.33 ft Froude Number 0.53 Flow Type Subcritical �G9r' utaData �� �� ._' P c TMc+ Downstream Depth 0.00 ft Length 0.00 ft Number Of Steps 0 GU,FOutputData'r ,- + s° Upstream Depth 0.00 It Profile Description Profile Headless 0.00 ft Downstream Velocity Infinity ft/s Upstream Velocity Infinity ft/s Normal Depth 0.29 ft Critical Depth 0.19 ft Channel Slope 0.00500 Rift Critical Slope 002042 ft/ft Bentley Systems, Inc. Haestad Methods Solution Center Bentley FlowMaster [08.01.071.00] 2/2/2009 10:23:43 AM 27 Siemens Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 Page 1 of 1 HAMPSTEAD BUSINESS PARK Drainage Area Drainage Area Drainage Area Drainage Area Impervious Area Calculation Tract #1 Tract #2 Tract #3 Tract #4 Tract #5 Tract #6 Tract #7 Tract #8 % Impervious Volume/Storage Calculation DA 1 Wet Detention Pond 1,197,901 sf 27.50 ac aSEAL 9f 9 031315 _ ��'c9RR r S ;V24A ,4t f FES 2 0 2009 BY: Design Storm (P) 1.5 in Schueler Method Runoff Coeff (RV) EEE0.50 RV = %IMP'0.009+0.05 Required Volume (Vreq) 1 74,411 lcf Vreq = (P/12)`RV'DA 1-Year Pre Dev. Volume 1-Year Runoff Depth 3.75 in Rv=0.05 + 0.9 ` Ip 0.050 V=3630' Ro * Rv' A 18,717 cf 1-Year Post Dev Volume 1-Year Runoff Depth 3.75 in Rv=0.05 + 0 9' IA 0.497 V=3630' Ro " Rv * A 186,027 cf Required Volume (Vreq) 167,309 cf Infiltration Calculation System Width (W) 74.60 k System Length (L) 140.00 it System Area (SF) 10444 sf Infiltration Rate (It) 2.2 m/hr ARM Boring Location #2 System Outflow lot) 0.54 cfs Of = It-L`W/43,200 Pond Outfall Velocity Calculations Discharge through Outlet Pipe 9.475 cfs Discharge through Spillway 23.69 cfs Velocity of Outlet Pipe Discharge 1.34 O=VA Velocity of Spillway Discharge 1 61 See Calculations Forebay Weir Calculation Discharge through Weir 85.27 cfs Depth of Flow through 10' wide weir 0.67 cfs O=CI-W3/2 CONTOUR INCR ACCUM CONTOUR AREA VOL VOL t [sq ft] [cu ft] [cu ft] 22.0 46558 0 0 aQ 9 23.0 49425 47,992 47,992 = SEAL �; _ 031315 - 24.0 52358 50,892 98,883 25.0 55358 53,858 152,741 FYGINE�e .� 26.0 58424 56,891 209,632 iqR s if 27.2 65963 31,649 282,950 //� ��12���`7 7BY: CEIVED FOREBAYB ? 0 2009 CONTOUR INCR ACCUMCONTOUR AREA VOL VOL [sq ft] [cu ft] [cu ft] 24.0 16998 0 0 25.0 19552 18,275 18,275 26.0 22138 20,845 39,120 26.7 23967 16,137 55,257 27.2 25281 12,312 67,569 Ape" pool 91,244 Asnelf bottom 84,598 VOLUME Ape. pool Ashelf bottom Apond bottom Apond bottom 46,558 Total 350,519 91,244 84,598 46,558 Depth 4.7 PROVIDED FOR FOREBAY 19.3% daveage 4.13 1.5" STORAGE CONTOUR [NCR ACCUM CONTOUR AREA VOL VOL [sq ft] [cu ft] [cu ft 27.2 91244 0 0 28.0 106062 78,922 78,922 28.85 109472 91,602 170,524 POND RELEASE TIME FOR CONTROL PIPE: STORAGE ORIFICE STORAGE OUTFLOW RELEASE ELEVATION ELEVATION VOLUME RATE TIME (FT) (FT) (CF) (CFS) (HOURS) 28.85 27.20 170,524 0.487 97.3 TOTAL HOURS DAYS CONTROL PIPE: 5 INCH ORIFICE HOLE USED ORIFICE EQUATION TO DETERMINE OUTFLOW RATE Q= Cd*A*(2gh)^1/2 97.3 4.1 cr . r 4 SEA r' 031315 ��,5C *NGINEF:e't` �� Pond Depth Calculation Permanent Pool Elevation = 27.2 Shelf Bottom Elevation = 26.7 Pond Bottom Elevation = 22.0 Pond Volume = 350,519 Aperm pool = 91,244 Abot_shelf = 84,598 a SEA _ 0313 5 ; P� P Abotyond= 46,558 Depth = 4.7 daverage = [0.25X{1+Abot_shelf/Aperm_pool)]+[fAbot_Shelf+Abotyond/2)X{Depth/Abol_shelf)I daverage = 4.13 FEB 9 0 2009 Hydrograph Summary Report Hydraflow Hydrographs by Intelisolve v9.1 Hyd.[(oryp' No.t drograph igin) Peak flow (cfs) Time interval (min) Time to peak (min) Hyd. volume (cuft) Inflow hyd(s) Maximum elevation (ft) Total strge used (cuft) Hydrograph description 1 SCS Runoff 123.691 3 726 413,629 ---- ------ ----- POND 2 Reservoir 34.03 3 747 399,075 1 29.14 205,170 POND 10-YEAR.gpw Return Period: 10 Year Thursday, Feb 5, 2009 Hydrograph Report 6 Hydraflow Hydrographs by Intelisolve v9.1 Hyd. No. 1 POND Hydrograph type Storm frequency Time interval Drainage area Basin Slope Tc method Total precip. Storm duration = SCS Runoff I- yr = 3 min = 27.500 ac = 0.0 % = USER = 7.06 in = 24 hrs Thursday, Feb 5, 2009 Peak discharge - 12 6 cfs Time to peak =T2-1"0 hrs Hyd. volume = 413,629 cuft Curve number = 77` Hydraulic length = 0 ft - Time of conc. (Tc) = 5.0 min Distribution = Type III Shape factor = 484 ' Composite (Area/CN) _ [(13.870 x 98) + (10.370 x 61) + (3.260 x 39)] / 27.500 Hydrograph Discharge Table Time -- Outflow (hrs cfs) 12.05 113.23 12.10 123.69 << 12.15 107.09 ... End ( Pnnted values >= 85.00 % of Op ) Hydrograph Report 3 Hydraflow Hydrographs by Intelisolve v9.1 Hyd. No. 2 POND Hydrograph type Storm frequency Time interval Inflow hyd. No. Max. Elevation = Reservoir = 10 yrs = 3 min 1-POND =�9_14 ft Peak discharge Time to peak Hyd. volume Reservoir name Max. Storage Storage Indication method used. Hydrograph Discharge Table Time Inflow Elevation Clv A Clv B Clv C PfRsr Wr A (hrs) cfs ft cfs cfs cfs cfs cfs Thursday, Feb 5, 2009 = 34' 03_cfs = 12.45 hrs = 399,075 cuft = POND = 205,170 cuft ( Pnnted values >= 85 007 of Qp) Wr B Wr C Wr D Exfil Outflow cfs cfs cfs cfs cfs 12.40 43.31 29.13 12.63 0.861 ----- ----- 8.917 22.29 ----- ----- ----- 12.45 36.89 29.14 << 12.75 0.864 ----- ----- 9.475 23.69 ----- ----- ----- 12.50 30.37 29.14 12.75 0.864 ----- ----- 9.448 23.62 ----- ----- ----- 12.55 24.36 29.13 12.64 0.861 ----- ----- 8.992 22.48 ----- ----- ----- 12.60 20.11 29.12 12.49 0.858 - 8.290 2073 ----- ----- ----- ... End 32.07 34.03 << 33.93 32.33 29.87 3H l3 = L,(g2- Lf Level to-r� s�r.ti �'('3 �j/5 - NC 6� �rP-��fl = Ok- Pond Report 4 Hydraflow Hydrographs by Intelisolve v9.1 Thursday, Feb 5, 2009 Pond No. 1 - POND Pond Data Contours - User -defined contour areas. Conic method used for volume calculation. Begining Elevation = 27.20 ft Stage / Storage Table Stage (ft) Elevation (ft) Contour area (scift) Incr. Storage (cult) Total storage (cuft) 0.00 27.20 97,614 0 0 0.80 28.00 106,062 81,439 81,439 1.80 29.00 110,038 108,033 189,472 2.80 30.00 114,070 112,037 301,509 3.80 31.00 118,159 116,097 417,606 Culvert / Orifice Structures Weir Structures [A] [B] [C] [PrfRsr] [A] [B] [C] [D] Rise (in) = 36.00 5.00 0.00 0.00 Crest Len (ft) = 20.00 50.00 0.00 0.00 Span (in) = 36.00 5.00 0.00 0.00 Crest El. (ft) = 28.85 28.85 0.00 0.00 No. Barrels = 1 1 1 0 Weir Coeff. = 3.00 3.00 3.33 3.33 Invert El. (ft) = 25.85 27.20 0.00 0.00 Weir Type = Broad Broad - -- Length (ft) = 62.00 0.00 0.00 000 Multi -Stage = Yes No No No Slope (%) = 0.90 0.00 0.00 n/a N-Value = 010 .013 .013 n/a Orifice Coeff. = 0.60 0.60 0.60 0.60 Exfil.(in/hr) = 0.00 by Contour) Multi -Stage = n/a Yes Yes No TW Elev. (ft) = 0.00 Note: Culvert/Onflce outflows are analyzed under inlet hc) and outlet (oc) control Weir users checked for onflce candmons he) and submergence (s). Stage / Storage I Discharge Table Stage Storage Elevation Clv A Clv B Clv C PrfRsr Wr A Wr B Wr C Wr D Exfil User Total it cuft ft cfs cfs cfs cfs cfs cis cfs cfs cfs cfs cfs 0.00 0 27.20 0.00 0.00 --- --- 0.00 0.00 -- --- -- -- 0.00 0.08 8,144 27.28 12.31 is 0.02 is --- --- 0.00 0.00 --- --- -- -- 0.02 0A 6 16,288 27.36 1231 is 0.07 lc -- -- 000 0.00 --- - -- -- 0.07 0.24 24,432 27.44 12.31 is 0.14 is -- --- 0.00 0.00 - -- -- --- 0.14 0.32 32,576 27.52 12.31 is 0.22 is -- - 0.00 0.00 - - --- --- 0.22 0.40 40,719 27.60 12.31 is 0.29 is -- -- 0.00 0.00 -- --- -- --- 0.29 0.48 48,863 27.68 12.31 lc 0.34 is -- --- 0.00 0.00 --- --- --- -- 0.34 0.56 57,007 27.76 12.31 lc 0.39 is -- -- 0.00 0.00 --- --- --- --- 0.39 0.64 65,151 27.84 12.31 is 0.43 is -- -- 000 0.00 --- --- --- -- 0.43 0.72 73,295 27.92 12.31 is 0.47 is -- -- 0.00 0.00 --- --- --- --- 0.47 0.80 81,439 28.00 12.31 is 0.50 is -- -- 0.00 0.00 -- - -- - 0.50 0.90 92,242 28.10 12.31 is 0.55 is - - 0.00 0.00 --- - - - 0.55 1.00 103,046 28.20 12.31 is 0.58 is - - 0.00 0.00 - -- --- - 0.58 1.10 113,849 28.30 12.31 is 0.62 is - -- 0.00 0.00 --- --- -- -- 0.62 1.20 124,652 28,40 12.31 is 0.65 is --- -- 0.00 0.00 --- --- --- -- 0.65 1.30 135,456 28.50 12.31 is 0.69 is --- --- 0.00 0.00 --- --- --- --- 0.69 1,40 146,259 28.60 12.31 is 0.72 is --- -- 0.00 0.00 --- --- --- -- 0.72 1 50 157,062 28.70 12.31 is 0.75 is - -- 0.00 0.00 0.75 1.60 167,865 28.80 12.31 is 0.77 is -- - 0.00 0.00 --- --- -- -- 0.77 1 70 178,669 28.90 12.31 is 0.80 is - - 0.67 1.68 3.15 1.80 189,472 29.00 12.31 is 0.83 is - - 3.49 8.71 13.03 1.90 200,676 29.10 12.31 is 0.85 is - - 7.50 18.75 --- 27.10 2.00 211,879 29.20 13.41 is 0.88 is -- -- 12.42 31.06 -- - --- --- 44.36 2.10 223,083 29.30 18.97 is 0.86 is -- - 18.11 45.28 -- --- --- --- 64.25 2.20 234,287 29.40 25.25 oc 0.77 is --- --- 24.47 61 18 --- --- --- -- 86.43 2.30 245,490 29.50 32.01 oc 0.56 is --- -- 31.44 7861 -- --- --- -- 110.61 2.40 256,694 29.60 37.25 oc 0.49 is -- -- 36.76 s 9743 --- --- -- --- 134.68 2.50 267,898 29.70 41.41 oc 0.45 is - - 40.96 s 117.55 --- --- -- --- 158.96 2.60 279,101 29.80 44.92 oc 0.42 is - - 44.50 s 138.89 --- 183.80 2.70 290,305 29.90 47.96 oc 0.39 is -- - 47.57 s 161.39 -- -- - - 209.34 2.80 301,509 30.00 50.65 oc 0.36 is -- -- 50.28 s 184.99 --- -- --- - 235.63 2.90 313,118 30.10 53.07 oc 0.34 is --- --- 52.72 s 209.63 --- --- --- --- 262.69 3.00 324,728 30.20 55.08 is 0.32 is --- --- 54.76 s 235.28 --- --- --- --- 290.36 3.10 336,338 30.30 56.45 is 0.29 is --- -- 56.15 s 261.90 --- --- -- -- 318.35 3.20 347,948 30.40 57 73 is 0.27 is --- - 57.46 s 289.46 --- -- - -- 347.19 3.30 359,557 30.50 58.93 is 0.26 is --- -- 58.67 s 317.92 -- -- -- -- 376.84 3.40 371,167 30.60 60.08 is 0.24 is -- - 59.82 s 347.25 - -- - --- 407.32 Continues on next page... POND Stage / Storage I Discharge Table Stage Storage Elevation Clv A Clv B Clv C ft Cuft ft Cfs Cfs cfs 3.50 382,777 30.70 61.17 is 0.23 is -- 3.60 394,386 30.80 62.23 is 0.21 is --- 3.70 405,996 30.90 63.25 is 0.20 is --- 3.80 417,606 31.00 64.24 is 0.19 is --- ...End PrfRsr Wr A Wr B Wr C Wr D Exfil User cfs Cfs Cfs cfs Cfs cfs Cfs -- 60.94 s 377.44 --- -- -- -- -- 62.00 s 408.45 — — — -- -- 63.03 s 440.27 -- -- -- - -- 64.04 s 472.88 -- --- --- --- Total Cfs 438.61 470.67 503.51 537.11 HyoraOow Storm Sewers 2008 vl2 01 Storm Sewer Tabulation- Nc` Page 1 Station Len Drng Area Rnoff Area x C Tc Rain Total Cap Vel Pipe Invert Elev HGL Elev Grnd I Rim Elev Line ID coeff (1) flow full LineFUn Incr Total [nor Total Inlet Syst lope Din Up Dn Up Din Up 7n)(%) (k) (ac) (ac) (C) (min) (min) (in/hr) (cfs) (cfs) (Ws) (ft) (ft) (ft) (ft) (ft) (k) 1 End 49 0.00 7.73 0.00 0.00 5.41 0.0 15.2 6.1 32.75 36.901 6 36 0.3.1 24.00 24.15 29.14 29.26 0.00 0.00 2-1 2 1 117 1 55 7.73 0.70 1.09 5.41 10.0 14.6 6.1 33.19 36.43 4.70 36 0.30 24.15 24.50 2953 29.82 0.00 0.00 3-2 3 2 186 1.12 6.18 0.70 0.78 4.33 10.0 13.5 6.3 27.10 36.55 3.83 36 0.30 24.50 25.06 30.10 30.41 0.00 0.00 4-3 4 3 271 2.55 5.06 0.70 179 3.54 10.0 12.0 6.5 22.90 36.48 3.24 36 0.30 25.06 25.87 30.59 30.91 0.00 0.00 5-4 5 4 366 2.51 2.51 0.70 1.76 1.76 10.0 10.0 6.8 11.86 22.49 2.42 30 0.30 25.87 26.97 31.06 31.37 0.00 0.00 6-5 Project File: NE STORM.stm Number of lines: 5 Run Date: 02-05-2009 NOTES: Intensity = 2654.13 / (Inlet time + 55.70) ^ 1.43; Return period = 10 Yrs. ; c = cir e = ellip b = box Hydrailow Storm Sewers 2008 v12.01 Hydraflm Storm Sewers 2008 v1201 Storm Sewer Tabulation - 9'a:rd Page 1 Station Len Drng Area Rnoff Area x C Tc Rain Total Cap Vel Pipe Invert Elev HGL Elev Grnd / Rim Elev Line ID coeff (1) flow full Line To Incr Total Incr Total Inlet Syst Size Slope Dn Up Dn Up Dn Up Line (ft) (ac) (ac) (C) (min) (min) (in/hr) (cfs) (cfs) (ft/s) (in) (%) A , (ft) (ft) (ft) (ft) (ft) 1 End 427 0.22 2.49 0.63 0.14 1.57 10.0 17.4 5.3 8.36 1238 2.66 24 0.30 23.43- 24.71 29.14 29.72 0.00 30.00 2-1 2 1 200 0.14 2.05 0.63 0.09 1.29 10.0 16.3 5.5 7.04 12.39 2.24 24 0.30 24.71 25.31 29.92 30.11 30.00 30.19 3-2 3 2 200 034 1.77 0.63 0.21 1.12 10.0 152 5.6 6.23 12.39 1.98 24 0.30 25.31 25.91 30.25 30.40 30.19 30.49 4-3 4 3 400 0.10 1.09 0.63 0.06 0.69 10.0 13.0 5.9 4.03 12.39 1.28 24 0.30 25.91 27.11 30.53 30.65 30.49 30.74 5-4 5 4 303 0.18 0.89 0.63 0.11 0.56 10.0 11.3 6.1 3.42 5.75 1.94 18 0.30 27.11 28.02 30.69 31.01 30.74 31.10 6-5 6 5 105 0.07 0.55 063 0.04 0.35 10.0 10.7 6.2 2.15 5.80 1.21 18 0.31 28.02 28.34 31.14 31.18 31.10 31.27 7-6 7 6 103 0.19 0.41 0.63 0.12 0.26 10.0 10.1 6.3 1.62 3.54 1.32 15 0.30 28.34 28.65 31.22 31.28 31.27 31.37 8-7 8 7 26 0.22 0.22 0.63 0.14 0.14 10.0 10.0 6.3 0.87 3.59 0.71 15 0.31 28.65 28.73 31.34 3135 31.37 31.44 9-8 9 1 26 0.22 0.22 063 0.14 014 10.0 10.0 63 0.87 3.59 0.71 15 0.31 24.71 24.79 29.99 29.99 30.00 30.07 10-2 10 2 26 0.14 0.14 0.63 0.09 0.09 10.0 100 6.3 0.56 3.59 0.45 15 0.31 25.31 25.39 30.31 30.31 30.19 30.39 11-3 11 3 26 0.34 0.34 0.63 0.21 0.21 100 10.0 6.3 1 35 3.59 1.10 15 0.31 25.91 25.99 30.53 30.54 30.49 30.63 12-4 12 4 26 0.10 0.10 0.63 0.06 0.06 10.0 10.0 6.3 0.40 3.59 032 15 0.31 27.11 27.19 30.72 30.72 30.74 3081 13-5 13 5 26 0 16 0.16 0.63 010 0.10 10.0 100 6.3 0.64 3.59 0.52 15 0.31 28.02 28.10 31.16 31.16 31.10 31 25 14-6 14 6 26 0.07 0.07 0.63 0.04 0.04 10.0 10.0 6.3 0.28 3.59 0.23 15 0.31 28.34 28.42 31.24 31.24 31.27 31.33 15-7 Project File' ROAD STORM.stm Number of lines: 14 Run Date: 02-05-2009 NOTES: Intensity = 121.80 / (Inlet time + 23.50) ^ 0.84; Return period = 10 Yrs. c = cir e = ellip b = box Hydraflow Storm Sewers 2008 v12 01 Hydraflow Storm Sewers 2008 02.01 Storm Sewer Tabulation - 54 . Page 1 Station Len Drng Area Rnoff Area x C Tc Rain Total Cap Vol Pipet Elev HGL Elev Grnd I Rim Elev Line ID coeff (1) flow full Incr Total Incr Total Inlet Syst Size SloUp Dn Up Dn Up TLne (ft) (ac) (ac) (C) (min) (min) (in/hr) (cfs) (cfs) (Ws) (in) M(ft) (ft) (ft) (ft) (ft) 1 End 85 0.69 11.48 0.70 0.48 8.15 10.0 209 5.4 44.16 108.8 2.78 54 0.3 23.263 29.14 29.18 0.00 0.00 2-1 2 1 57 0.69 10.79 0.70 0.48 7.67 10.0 20.6 5.5 41.79 78.62 333 48 0.30 23.26m 23 43 29.34 29.39 0.00 0.00 3-2 3 2 261 1.38 10.10 0.70 0.97 7.19 10.0 19.2 5.6 40.24 78.59 3.20 48 0.30 23.43 �) 24.21 29.49 29.69 0.00 0.00 4-3 4 3 430 2.10 8.72 0.70 1.47 6.22 10.0 16.8 5.9 36.48 55.13 3.79 42 0.30 24.21© 25.50 Ctj 29.93 30.50 0.00 0.00 5-4 5 4 360 1.85 6.62 0.70 1.30 4.75 10.0 14.8 6.1 28.99 36.55 4.10 36 0.30 25.501& 26.58' 30.61 31.29 0.00 0.00 6-5 6 5 295 2.22 4.77 0.70 1.55 3.45 10.0 13.2 6.3 21.81 36.61 3.09 36 0.30 26.58 27.47 b 31.53 31.85 0.00 0.00 7-6 7 6 394 2.09 2.55 0.70 1.46 1.90 10.0 11.0 6.6 12.56 36.49 1.78 36 0.30 27.47 28.65 7 32.02 32.16 0.00 0.00 8-7 8 7 174 0.46 0.46 0.95 0.44 0.44 10.0 10.0 6.8 2.95 5.74 1.67 18 0.30 28.65 29.17k 32.19 32.33 0.00 0.00 9-8 Project File: SW STORM.stm Number of lines: 8 Run Date: 02-05-2009 NOTES: Intensity = 2654.13 1 (Inlet time + 55.70) ^ 1.43; Return period = 10 Yrs. c = cir e = ellip b = box Hydrallm Slo. Sewers 2008 v12.01 11 Hydrograph Summary Report Hydraflow Hydrographs by Intelisolve v9.1 Hyd. No. Hydrograph type (origin) Peak flow (cfs) Time interval (min) Time to peak (min) Hyd. volume (cuft) Inflow hyd(s) Maximum elevation (ft) Total strge used (cuft) Hydrograph description 1 SCS Runoff ( 251.52> 3 726 866,220 -- -- --- POND 2 Reservoir 18621 3 732 851,515 1 29.83 280,158 POND 10-YEAR.gpw Return Period. 100 Yea Thursday, Feb 5, 2009 Hydrograph Report 7 HydraFlow Hydrographs by Intelisolve v9.1 Hyd. No. 1 POND Hydrograph type Storm frequency Time interval Drainage area Basin Slope Tc method Total precip. Storm duration = SCS Runoff = 100 yrs = 3 min = 27.500 ac = 0.0 % = USER = 12.23 in = 24 hrs ` Composite (Area/CN) _ 1(13.870 x 98) + (10.370 x 61) + (3.260 x 39)] / 27.500 Hydrograph Discharge Table Time -- Outflow (hrs cfs) 12.05 233.63 12.10 251.52 << 12.15 215.13 ...End Thursday, Feb 5, 2009 Peak discharge = 251.52 cfs Time to peak = 12.10 hrs Hyd. volume = 413,629 cuft Curve number = 77' Hydraulic length = 0 ft Time of conc. (Tc) = 5.0 min Distribution = Type III Shape factor = 484 ( Panted values >= 85 00% of ep ) Hydrograph • Report 8 HydraFlow Hydrographs by Intelisolve v9.1 Thursday, Feb 5, 2009 Hyd. No. 2 POND Hydrograph type = Reservoir Peak discharge = 186.21 cfs Storm frequency = 100 yrs Time to peak = 12.20 hrs Time interval = 3 min Hyd. volume = 399,075 cuft Inflow hyd. No. = 1 -POND Reservoir name = POND Max. Elevation = 29.83 ft Max. Storage = 280,158 cuft Storage Indication method used Hydrograph Discharge Table (Panted values >=W00%Ot nG) Time Inflow Elevation Clv A Clv B Clv C PfRsr Wr A Wr B Wr C Wr D Exfil Outflow (hrs) cfs ft cfs cfs cfs cfs cfs cfs cfs cfs cfs cfs 12.10 251.52 << 29.71 41.60 0.447 ----- ----- 41.15 118.72 ----- ----- ----- 160.32 12.15 215.13 29.80 45.02 0.415 ----- ----- 44.59 139.62 ----- ----- ----- 184.63 12.20 163.42 29.81 << 45.20 0.413 ----- ----- 44.79 141.01 ----- ----- ----- 186.21 << 12.25 127.23 29.75 43.33 0.431 ----- ----- 42.89 129.23 ----- ----- ----- 172.55 End Hydrograph Report 1 Hydraflow Hydrographs by Intelisolve v9.1 Hyd. No. 1 POND Hydrograph type Storm frequency Time interval Drainage area Basin Slope Tc method Total precip. Storm duration = SCS Runoff = 1 yrs = 3 min = 27.500 ac = 0.0 % = USER = 3.75 in = 24 h rs * Composite (Area/CN) _ [(13.870 x 98) + (10.370 x 61) + (3.260 x 39)] / 27 500 Hydrograph Discharge Table Time -- Outflow (min cfs) 723 4004 726 45.12 << 729 40.08 End Thursday, Mar 26, 2009 Peak discharge 45Hc!�s Time to peak = 726-min Hyd. volume = 151,498 cuft Curve number = 77* Hydraulic length = 0 ft Time of conc. (Tc) = 5.0 min Distribution = Type III Shape factor = 484 ( Primed values >= 65 W% of pp ) •a SEAM �• 031315 ; R �GIN- ' E 0 , pP. /�t��,/f�rJo`► Hydrograph Report 2 Hydraflow Hydrographs by Intelisolve v9 1 Thursday, Mar 26, 2009 Hyd. No. 2 POND �\ = 0.6� 54 Hydrograph type = Reservoir Peak discharge cfs Storm frequency = 1 yrs Time to peak = 1428 min Time interval = 3 min Hyd. volume = 139,940 cuft Inflow hyd. No. = 1 -POND Reservoir name = POND Max. Elevation = 28.40 ft Max. Storage = 124,851 cult Storage Indication method used Hydrograph Discharge Table (Printed values 8600%of Op) Time Inflow Elevation Clv A Clv B Clv C PfRsr Wr A Wr B Wr C Wr D Exfil Outflow (min) cfs ft cfs cfs cfs cfs cfs cfs cfs cfs cfs cfs 825 3.846 28.13 12.31 0.557 ----- ----- ----- ----- ----- ----- ----- 0.557 828 3.772 28.13 12.31 0.559 ----- ----- ----- ----- ----- ----- ----- 0.559 831 3.698 28.14 12.31 0.561 ----- ----- ----- ----- ----- ----- ----- 0.561 834 3.623 28.15 12.31 0.563 ----- ----- ----- ----- ----- ----- ----- 0.563 837 3.547 28.15 12.31 0.565 ----- ----- ----- ----- ----- ----- ----- 0.565 840 3.472 28.16 12.31 0.567 ----- ----- ----- ----- ----- ----- ----- 0.567 843 3.400 28.16 12.31 0.569 ----- ----- ----- ----- ----- ----- ----- 0.569 846 3.340 28.16 12.31 0.571 ----- ----- ----- ----- ----- ----- ----- 0.571 849 3.295 28.17 12.31 0 572 ----- ----- ----- ----- ----- ----- ----- 0.572 852 3.257 28.17 12.31 0.574 ----- ----- ----- ----- ----- ----- ----- 0.574 855 3.222 28.18 12.31 0.576 ----- ----- ----- ----- ----- ----- ----- 0.576 858 3,187 28.18 12.31 0.577 ----- ----- ----- ----- ----- ----- ----- 0.577 861 3.152 28.19 12.31 0.579 ----- ----- ----- ----- ----- ----- ----- 0.579 864 3.117 28,19 12.31 0.581 ----- ----- ----- ----- ----- ----- ----- 0.581 867 3.082 28.20 12.31 0.582 ----- ----- ----- ----- ----- ----- ----- 0.582 870 3.046 28.20 12.31 0.584 ----- ----- ----- ----- ----- ----- ----- 0.584 873 3.010 28.20 12.31 0.585 ----- ----- ----- ----- ----- ----- ----- 0.585 876 2.974 28.21 12.31 0.587 ----- ----- ----- ----- ----- ----- ----- 0.587 879 2.938 28.21 12.31 0.588 ----- ----- ----- ----- ----- ----- ----- 0.588 882 2.902 28.22 12.31 0.590 ----- ----- ----- ----- ----- ----- ----- 0.590 885 2.866 28.22 12.31 0.591 ----- ----- ----- ----- ----- ----- ----- 0.591 888 2.829 28.22 12.31 0.592 ----- ----- ----- ----- ----- ----- ----- 0.592 891 2.792 28.23 12.31 0.594 ----- ----- ----- ----- ----- ----- ----- 0.594 894 2.756 28.23 12.31 0.595 ----- ----- ----- ----- ----- ----- ----- 0.595 897 2.719 28.23 1231 0 596 ----- ----- ----- ----- ----- ----- ----- 0.596 900 2,681 28.24 12.31 0.597 ----- ----- ----- ----- ----- ----- ----- 0.597 903 2.644 28.24 12.31 0.599 ----- ----- ----- ----- ----- ----- ----- 0.599 906 2.607 28.24 12.31 0.600 ----- ----- ----- ----- ----- ----- ----- 0.600 909 2.569 28.25 12.31 0.601 ----- ----- ----- ----- ----- ----- ----- 0 601 912 2.532 28.25 12.31 0.602 ----- ----- ----- ----- ----- ----- ----- 0.602 915 2.494 2825 12.31 0.603 ----- ----- ----- ----- ----- ----- ----- 0.603 918 2.456 28.26 12.31 0.604 ----- ----- ----- ----- ----- ----- ----- 0.604 921 2.418 2826 12.31 0.606 ----- ----- ----- ----- ----- ----- ----- 0.606 924 2.380 28.26 12.31 0.607 ----- ----- ----- ----- ----- ----- ----- 0.607 927 2.341 28.27 12.31 0.608 ----- ----- -- ----- ----- ----- 0.608 930 2.303 28.27 12.31 0.609 ----- ----- ----- ----- ----- ----- ----- 0.609 933 2.265 28.27 12.31 0.610 ----- ----- -- ----- ----- ----- 0.610 936 2.226 28.27 12.31 0.611 ----- ----- ----- ----- ----- ----- ----- 0,611 939 2187 28.28 12.31 0.612 ----- ----- ----- ----- ----- ----- ----- 0.612 942 2.149 28.28 12.31 0.613 ----- ----- ----- ----- ----- ----- ----- 0.613 Continues on next page... 3 POND Hydrograph Discharge Table Time Inflow Elevation Clv A Clv B Clv C PfRsr Wr A Wr B Wr C Wr D Exfil Outflow (min) cfs ft cfs cfs cfs cfs cfs cfs cfs cfs cfs cfs 945 2.110 28.28 12.31 0.613 ----- ----- ----- ----- ----- ----- ----- 0.613 948 2071 28.28 12.31 0.614 ----- ----- ----- ----- ----- ----- ----- 0.614 951 2032 2829 12.31 0.615 ----- ----- ----- ----- ----- ----- ----- 0.615 ,954 1 992 28.29 12.31 0.616 ----- ----- ----- ----- ----- ----- ----- 0 616 957 1.953 28.29 12.31 0.617 ----- ----- ----- ----- ----- ----- ----- 0 617 960 1.914 28.29 12.31 0.618 ----- ----- ----- ----- ----- ----- ----- 0.618 963 1.877 28.30 12.31 0.618 ----- ----- ----- ----- ----- ----- ----- 0.618 966 1.846 28.30 12.31 0.619 ----- ----- ----- ----- ----- ----- ----- 0.619 969 1.824 28.30 12.31 0.620 ----- ----- ----- ----- ----- ----- ----- 0.620 972 1.806 28.30 12.31 0.620 ----- ----- ----- ----- ----- ----- ----- 0.620 975 1.789 28.30 12.31 0 621 ----- ----- ----- ----- ----- ----- ----- 0.621 978 1.772 28.31 12.31 0.622 ----- ----- ----- ----- ----- ----- ----- 0.622 981 1.756 28.31 12.31 0 622 ----- ----- ----- ----- ----- ----- ----- 0.622 984 1.739 28.31 12.31 0.623 ----- ----- ----- ----- ----- ----- ----- 0.623 987 1.722 28.31 12.31 0.624 ----- ----- ----- ----- ----- ----- ----- 0.624 990 1.705 28.31 12.31 0.624 ----- ----- ----- ----- ----- ----- ----- 0.624 993 1.689 28.31 12.31 0.625 ----- ----- ----- ----- ----- ----- ----- 0.625 996 1.672 28.32 12.31 0.626 ----- ----- ----- ----- ----- ----- ----- 0.626 999 1.655 28.32 12.31 0.626 ----- ----- ----- ----- ----- ----- ----- 0.626 1002 1.638 28.32 12.31 0.627 ----- ----- ----- ----- ----- ----- ----- 0.627 1005 1.621 28.32 12.31 0.627 ----- ----- ----- ----- ----- ----- ----- 0.627 1008 1.604 28.32 12.31 0.628 ----- ----- ----- ----- ----- ----- ----- 0.628 1011 1.587 28.33 12.31 0.628 ----- ----- ----- ----- ----- ----- ----- 0.628 1014 1.570 28.33 12.31 0.629 ----- ----- ----- ----- ----- ----- ----- 0.629 1017 1.553 28.33 12.31 0.629 ----- ----- ----- ----- ----- ----- ----- 0.629 1020 1.536 28.33 12.31 0.630 ----- ----- ----- ----- ----- ----- ----- 0 630 1023 1.519 28.33 1231 0.630 ----- ----- ----- ----- ----- ----- ----- 0.630 1026 1.501 28.33 12.31 0.631 ----- ----- ----- ----- ----- ----- ----- 0.631 1029 1.484 28.33 12.31 0.631 ----- ----- ----- ----- ----- ----- ----- 0.631 1032 1.467 28.34 1231 0.632 ----- ----- ----- ----- ----- ----- ----- 0.632 1035 1.450 28.34 12.31 0.632 ----- ----- ----- ----- ----- ----- ----- 0.632 1038 1.432 2834 12.31 0.633 ----- ----- ----- ----- ----- ----- ----- 0.633 1041 1.415 28.34 12.31 0.633 ----- ----- ----- ----- ----- ----- ----- 0.633 1044 1.398 28.34 12.31 0.634 ----- ----- ----- ----- ----- ----- ----- 0.634 1047 1.380 28.34 12.31 0.634 ----- ----- ----- ----- ----- ----- ----- 0.634 1050 1363 28.34 12.31 0.635 ----- ----- ----- ----- ----- ----- ----- 0.635 1053 1.346 28.34 12.31 0.635 ----- ----- ----- ----- ----- ----- ----- 0.635 1056 1.328 28.35 12.31 0.635 ----- ----- ----- ----- ----- ----- ----- 0.635 1059 1.311 28.35 12.31 0.636 ----- ----- ----- ----- ----- ----- ----- 0.636 1062 1.293 28.35 12.31 0.636 ----- ----- ----- ----- ----- ----- ----- 0.636 1065 1.276 28.35 12.31 0.636 ----- ----- ----- ----- ----- ----- ----- 0.636 1068 1.258 28.35 12.31 0.637 ----- ----- ----- ----- ----- ----- ----- 0.637 1071 1.241 28.35 12.31 0.637 ----- ----- ----- ----- ----- ----- ----- 0.637 1074 1.223 28.35 1231 0.637 ----- ----- ----- ----- ----- ----- ----- 0.637 1077 1.206 28.35 12.31 0.638 ----- ----- ----- ----- ----- ----- ----- 0.638 1080 1.188 28.35 12.31 0.638 ----- ----- ----- ----- ----- ----- ----- 0.638 1083 1.172 28.35 12.31 0.638 ----- ----- ----- ----- ----- ----- ----- 0.638 1086 1.159 28.36 12.31 0.639 ----- ----- ----- ----- ----- ----- ,----- 0.639 1089 1.151 28.36 12.31 0.639 ----- ----- ----- ----- ----- ----- ----- 0.639 1092 1.145 28.36 12.31 0.639 ----- ----- ----- ----- ----- ----- ----- 0.639 1095 1.140 28.36 12.31 0.640 ----- ----- ----- ----- ----- ----- ----- 0.640 1098 1.135 28.36 12.31 0.640 ----- ----- ----- ----- ----- ----- ----- 0.640 1101 1.130 28.36 12.31 0.640 ----- ----- ----- ----- ----- ----- ----- 0.640 Continues on next page... 4 .e'�, Hydrograph Discharge Table Time Inflow Elevation Clv A Clv B Clv C PfRsr Wr A Wr B Wr C Wr D Exfil Outflow (min) cfs ft cfs cfs cfs cfs cfs cfs cfs cfs cfs cfs 1104 1.125 28.36 12.31 0.640 ----- ----- ----- ----- ----- ----- ----- 0.640 1107 1.120 28.36 12.31 0.641 ----- ----- ----- ----- ----- ----- ----- 0.641 1110 1.115 28.36 12.31 0.641 ----- ----- ----- ----- ----- ----- ----- 0.641 1113 1.110 28.36 12.31 0.641 ----- ----- ----- ----- ----- ----- ----- 0.641 1116 1.105 28.36 12.31 0.642 ----- ----- ----- ----- ----- ----- ----- 0.642 1119 1.100 28.36 12.31 0.642 ----- ----- ----- ----- ----- ----- ----- 0.642 1122 1.094 28.37 12.31 0.642 ----- ----- ----- ----- ----- ----- ----- 0.642 1125 1.089 28.37 12.31 0.642 ----- ----- ----- ----- ----- ----- ----- 0.642 1128 1.084 28.37 12.31 0.643 ----- ----- ----- ----- ----- ----- ----- 0.643 1131 1.079 28.37 12.31 0.643 ----- ----- ----- ----- ----- ----- ----- 0.643 1134 1.074 28.37 12.31 0.643 ----- ----- ----- ----- ----- ----- ----- 0.643 1137 1.069 28.37 12.31 0.643 ----- ----- ----- ----- ----- ----- ----- 0.643 1140 1.064 28.37 12.31 0.643 ----- ----- ----- ----- ----- ----- ----- 0.643 1143 1.059 28.37 12.31 0.644 ----- ----- ----- ----- ----- ----- ----- 0.644 1146 1.054 28.37 12.31 0.644 ----- ---- ----- ----- ----- ----- ----- 0.644 1149 1.049 28.37 12.31 0.644 ----- ----- ----- ----- ----- ----- ----- 0.644 1152 1.043 28.37 12.31 0.644 ----- ----- ----- ----- ----- ----- ----- 0.644 1155 1.038 28.37 12.31 0.645 ----- ----- ----- ----- ----- ----- ----- 0.645 1158 1.033 28.37 12.31 0.645 ----- ----- ----- ----- ----- ----- ----- 0.645 1161 1.028 28.37 12.31 0.645 ----- ----- ----- ----- ----- ----- ----- 0.645 1164 1.023 28.38 12.31 0.645 ----- ----- ----- ----- ----- ----- ----- 0.645 1167 1.018 28.38 12.31 0.646 ----- ----- ----- ----- ----- ----- ----- 0.646 1170 1.012 28.38 12.31 0.646 ----- ----- ----- ----- ----- ----- ----- 0.646 1173 1.007 28.38 12.31 0.646 ----- ----- ----- ----- ----- ----- ----- 0.646 1176 1.002 28.38 12.31 0.646 ----- ----- ----- ----- ----- ----- ----- 0.646 1179 0.997 28.38 12.31 0.646 ----- ----- ----- ----- ----- ----- ----- 0.646 1182 0.992 28.38 12.31 0.647 ----- ----- ----- ----- ----- ----- ----- 0.647 1185 0.987 28.38 12.31 0.647 ----- ----- ----- ----- ----- ----- ----- 0.647 1188 0.981 28.38 12.31 0.647 ----- ----- ----- ----- ----- ----- ----- 0.647 1191 0.976 28.38 12.31 0.647 ----- ----- ----- ----- ----- ----- ----- 0.647 1194 0.971 28.38 12.31 0.647 ----- ----- ----- ----- ----- ----- ----- 0.647 1197 0.966 28.38 12.31 0.647 ----- ----- ----- ----- ----- ----- ----- 0.647 1200 0.961 28.38 1231 0.648 ----- ----- ----- ----- ----- ----- ----- 0.648 1203 0.955 28.38 1231 0.648 ----- ----- ----- ----- ----- ----- ----- 0.648 1206 0.950 28.38 12.31 0.648 ----- ----- ----- ----- ----- ----- ----- 0.648 1209 0.945 28.38 12.31 0.648 ----- ----- ----- ----- ----- ----- ----- 0.648 1212 0.940 28.38 12.31 0.648 ----- ----- ----- ----- ----- ----- ----- 0.648 1215 0 934 28.38 12.31 0 648 ----- ----- ----- ----- ----- ----- ----- 0.648 1218 0.929 28.38 12.31 0.649 ----- ----- ----- ----- ----- ----- ----- 0.649 1221 0.924 28.39 12.31 0.649 ----- ----- ----- ----- ----- ----- ----- 0.649 1224 0.919 28.39 12.31 0.649 ----- ----- ----- ----- ----- ----- ----- 0.649 1227 0.913 28.39 12.31 0.649 ----- ----- ----- ----- ----- ----- ----- 0.649 1230 0.908 28.39 12.31 0.649 ----- ----- ----- ----- ----- ----- ----- 0.649 1233 0.903 28.39 12.31 0.649 ----- ----- ----- ----- ----- ----- ----- 0.649 1236 0.898 28.39 12.31 0.650 ----- ----- ----- ----- ----- ----- ----- 0.650 1239 0.892 28.39 12.31 0.650 ----- ----- ----- ----- ----- ----- ----- 0.650 1242 0.887 28.39 12.31 0.650 ----- ----- ----- ----- ----- ----- ----- 0.650 1245 0 882 28.39 1231 0.650 ----- ----- ----- ----- ----- ----- ----- 0.650 1248 0.876 28.39 12.31 0.650 ----- ----- ----- ----- ----- ----- ----- 0.650 1251 0.871 28.39 12.31 0.650 ----- ----- ----- ----- ----- ----- ----- 0.650 1254 0.866 28.39 12.31 0.650 ----- ----- ----- ----- ----- ----- ----- 0.650 1257 0.861 28.39 12.31 0.650 ----- ----- ----- ----- ----- ----- ----- 0 650 1260 0.855 28.39 12.31 0.651 ----- ----- ----- ----- ----- ----- ----- 0.651 Continues on next page... 5 POND Hydrograph Discharge Table Time Inflow Elevation Clv A Clv B Clv C PfRsr Wr A Wr B Wr C Wr D Exfil Outflow (min) cfs ft cfs cfs cfs cfs cfs cfs cfs cfs cfs cfs 1263 0.850 28.39 12.31 0.651 ----- ----- ----- ----- ----- ----- ----- 0.651 1266 0.845 28.39 12.31 0.651 ----- ----- ----- ----- ----- ----- ----- 0.651 1269 0.839 28.39 12.31 0.651 ----- ----- ----- ----- ----- ----- ----- 0.651 1272 0.834 28.39 12.31 0.651 ----- ----- ----- ----- ----- ----- ----- 0.651 1275 0.829 28.39 12.31 0.651 ----- ----- ----- ----- ----- ----- ----- 0.651 1278 0.823 28.39 12.31 0.651 ----- ----- ----- ----- ----- ----- ----- 0.651 1281 0.818 28.39 12.31 0.651 ----- ----- ----- ----- ----- ----- ----- 0.651 1284 0 813 28.39 12.31 0.651 ----- ----- ----- ----- ----- ----- ----- 0.651 1287 0.807 28.39 1231 0.651 ----- ----- ----- ----- ----- ----- -- 0.651 1290 0.802 28.39 12.31 0.652 ----- ----- ----- ----- ----- ----- ----- 0.652 1293 0.797 28.39 12.31 0.652 ----- ----- ----- ----- ----- 0.652 1296 0.791 28.39 12.31 0.652 ----- ----- ----- ----- ----- ----- ----- 0.652 1299 0.786 28.39 12.31 0.652 ----- ----- ----- ----- ----- ----- ----- 0.652 1302 0.780 28.39 12.31 0.652 ----- ----- ----- ----- ----- ----- ----- 0 652 1305 0.775 28.39 12.31 0.652 ----- ----- ----- ----- ----- ----- ----- 0.652 1308 0.770 28.39 12.31 0.652 ----- ----- ----- ----- ----- ----- ----- 0.652 1311 0.764 28.40 12.31 0.652 ----- ----- ----- ----- ----- 0.652 1314 0.759 28.40 12.31 0.652 ----- ----- ----- ----- ----- ----- ----- 0.652 1317 0.754 28.40 12.31 0.652 ----- ----- ----- ----- ----- ----- ----- 0.652 1320 0.748 28.40 12.31 0.652 ----- ----- ----- ----- ----- ----- ----- 0.652 1323 0.976 28.40 12.31 0.652 ----- ----- ----- ----- ----- ----- ----- 0.652 1326 1.215 28.40 12.31 0.653 ----- ----- ----- ----- ----- ----- ----- 0.653 1329 1.077 28.40 12.31 0.653 ----- ----- ----- ----- ----- ----- ----- 0.653 1332 0.933 28.40 12.31 0.653 ----- ----- ----- ----- ----- ----- ----- 0.653 1335 0.781 28.40 12.31 0.653 ----- ----- ----- ----- ----- ----- ----- 0.653 1338 0.777 28.40 12.31 0.653 ----- ----- ----- ----- ----- ----- ----- 0.653 1341 0.773 28.40 12.31 0.653 ----- ----- ----- ----- ----- ----- ----- 0.653 1344 0.769 28.40 12.31 0.653 ----- ----- ----- ----- ----- ----- ----- 0.653 1347 0.765 28.40 12.31 0.653 ----- ----- ----- ----- ----- ----- ----- 0.653 1350 0.761 28.40 12.31 0.654 ----- -- ----- ----- ----- ----- 0.654 1353 0.757 28.40 12.31 0.654 ----- ----- ----- ----- ----- ----- ----- 0.654 1356 0.753 28.40 12.31 0.654 ----- ----- ----- ----- ----- ----- ----- 0.654 1359 0.749 28.40 12.31 0.654 ----- ----- ----- ----- ----- ----- ----- 0.654 1362 0.745 28.40 12.31 0.654 ----- ----- ----- ----- ----- ----- ----- 0.654 1365 0.741 28.40 12.31 0.654 ----- ----- ----- ----- ----- ----- ----- 0.654 1368 0.737 28.40 12.31 0.654 ----- ----- ----- ----- ----- ----- ----- 0 654 1371 0.733 28.40 12.31 0.654 ----- ----- ----- ----- ----- ----- ----- 0.654 1374 0.729 28.40 12.31 0.654 ----- ----- ----- ----- ----- ----- ----- 0.654 1377 0.725 28.40 12.31 0.654 ----- ----- ----- ----- ----- ----- ----- 0.654 1380 0.721 28.40 12.31 0.654 ----- ----- ----- ----- ----- ----- ----- 0.654 1383 0.717 28.40 12.31 0.654 ----- ----- ----- ----- ----- ----- ----- 0.654 1386 0.713 28.40 12.31 0.654 ----- ----- ----- ----- ----- ----- ----- 0.654 1389 0.709 28.40 12.31 0.654 ----- ----- ----- ----- ----- ----- ----- 0.654 1392 0.705 28.40 12.31 0.654 ----- ----- ----- ----- ----- ----- ----- 0.654 1395 0 701 28.40 12.31 0.654 ----- ----- ----- ----- ----- ----- ----- 0.654 1398 0.697 28.40 12.31 0.654 ----- ----- ----- ----- ----- ----- ----- 0.654 1401 0.693 28.40 12.31 0.654 ----- ----- ----- ----- ----- ----- ----- 0.654 1404 0.689 28.40 12.31 0.654 ----- ----- ----- ----- ----- ----- ----- 0.654 1407 0.685 28.40 12.31 0.654 ----- ----- ----- ----- ----- ----- ----- 0.654 1410 0.681 28.40 12.31 0.654 ----- ----- ----- ----- ----- ----- ----- 0.654 1413 0.677 28.40 12.31 0.654 ----- ----- ----- ----- ----- ----- ----- 0.654 1416 0.673 28.40 12.31 0.654 ----- ----- ----- ----- ----- ----- ----- 0.654 1419 0.668 28.40 12.31 0.654 ----- ----- ----- ----- ----- ----- ----- 0.654 Continues on next page... 11 POND Hydrograph Discharge Table Time Inflow Elevation Clv A Clv B Civ C PfRsr Wr A Wr B Wr C Wr D Exfil Outflow (min) cfs ft cfs cfs cfs cfs cfs cfs cfs cfs cfs cfs 1422 0.664 28.40 12.31 0.654 ----- ----- ----- ----- ----- ----- ----- 0.654 1425 0.660 28.40 12.31 0.654 ----- ----- ----- ----- ----- ----- ----- 0.654 1428 0.656 28.40 << 12.31 0.654 ----- ----- ----- ----- - ----- ----- ----- 0.654 « 1431 0 652 28.40 12.31 0.654 ----- ----- ----- ----- ----- ----- ----- 0.654 1434 0.648 28.40 12.31 0.654 ----- ----- ----- ----- ----- ----- ----- 0.654 1437 0.644 28.40 12.31 0.654 ----- ----- ----- ----- ----- ----- ----- 0.654 1440 0.640 28.40 12.31 0.654 ----- ----- ----- ----- ----- ----- ----- 0.654 1443 0.510 28.40 12.31 0.654 ----- ----- ----- ----- ----- ----- ----- 0.654 1446 0.254 28.40 12.31 0.654 ----- ----- ----- ----- ----- ----- ----- 0.654 1449 0.085 28.40 12.31 0.654 ----- ----- ----- ----- ----- ----- ----- 0.654 1452 0.000 28.40 1231 0.654 ----- ----- ----- ----- ----- ----- ----- 0.654 1455 0.000 28.40 1231 0.653 ----- ----- ----- ----- ----- ----- ----- 0.653 1458 0.000 28.40 12.31 0.653 ---- ----- ----- ----- ----- ----- ----- 0.653 1461 0.000 28.40 12.31 0.652 ----- ----- ----- ----- ----- ----- ----- 0.652 1464 0.000 28.40 12.31 0.652 ----- ----- ----- ----- ----- ----- ----- 0.652 1467 0.000 28.39 12.31 0.652 ----- ----- ----- ----- ----- ----- ----- 0.652 1470 0.000 28.39 12.31 0.651 ----- ----- ----- ----- ----- ----- ----- 0.651 1473 0.000 28.39 12.31 0.651 ----- ----- ----- ----- ----- ----- ----- 0.651 1476 0.000 28.39 12.31 0.651 ----- ----- ----- ----- ----- ----- ----- 0.651 1479 0.000 28.39 12.31 0.650 ----- ----- ----- ----- ----- ----- ----- 0 650 1482 0.000 28.39 12.31 0.650 ----- ----- ----- ----- ----- ----- ----- 0.650 1485 0.000 28.39 12.31 0.649 ----- ----- ----- ----- ----- ----- ----- 0.649 1488 0.000 28.39 12.31 0.649 ----- ----- ----- ----- ----- ----- ----- 0.649 1491 0.000 28.39 12.31 0.649 ----- ----- ----- ----- ----- ----- ----- 0 649 1494 0.000 28.38 12.31 0.648 ----- ----- ----- ----- ----- ----- ----- 0.648 1497 0.000 28.38 12.31 0.648 ----- ----- ----- ----- ----- ----- ----- 0.648 1500 0.000 28.38 12.31 0.648 ----- ----- ----- ----- ----- ----- ----- 0 648 1503 0 000 28.38 12.31 0.647 ----- ----- ----- ----- ----- ----- ----- 0 647 1506 0.000 28.38 1231 0.647 ----- ----- ----- ----- ----- ----- ----- 0.647 1509 0.000 28.38 12.31 0.647 ----- ----- ----- ----- ----- ----- ----- 0.647 1512 0.000 28.38 12.31 0.646 ----- ----- ----- ----- ----- ----- ----- 0.646 1515 0.000 28.38 12.31 0.646 ----- ----- ----- ----- ----- ----- ----- 0.646 1518 0.000 28.38 12.31 0.645 ----- ----- ----- ----- ----- ----- ----- 0.645 1521 0.000 28.37 12.31 0.645 ----- ----- ----- ----- ----- ----- ----- 0.645 1524 0.000 28.37 12.31 0.645 ----- ----- ----- ----- ----- ----- ----- 0.645 1527 0.000 28.37 12.31 0.644 ----- ----- ----- ----- ----- ----- ----- 0.644 1530 0.000 28.37 12.31 0.644 ----- ----- ----- ----- ----- ----- ----- 0.644 1533 0.000 28.37 12.31 0.644 ----- ----- ----- ----- ----- ----- ----- 0.644 1536 0.000 28.37 12.31 0.643 ----- ----- ----- ----- ----- ----- ----- 0.643 1539 0.000 28.37 1231 0.643 ----- ----- ----- ----- ----- ----- ----- 0.643 1542 0.000 28.37 12.31 0.643 ----- ----- ----- ----- ----- ----- ----- 0.643 1545 0.000 28.37 12.31 0.642 ----- ----- ----- ----- ----- ----- ----- 0.642 1548 0.000 28.36 12.31 0.642 ----- ----- ----- ----- ----- ----- ----- 0.642 1551 0.000 2836 12.31 0.641 ----- ----- ----- ----- ----- 0.641 1554 0.000 28.36 12.31 0.641 ----- ----- ----- ----- ----- ----- ----- 0.641 1557 0 000 28.36 12.31 0.641 ----- ----- ----- ----- ----- ----- ----- 0.641 1560 0.000 28.36 12.31 0.640 ----- ----- ----- ----- ----- ----- ----- 0.640 1563 0.000 28.36 12.31 0.640 ----- ----- ----- ----- ----- ----- ----- 0.640 1566 0.000 28.36 12.31 0.640 ----- ----- ----- ----- ----- ----- ----- 0.640 1569 0.000 28.36 12.31 0.639 ----- ----- ----- ----- ----- ----- ----- 0.639 1572 0.000 28.36 12.31 0.639 ----- ----- ----- ----- ----- ----- ----- 0.639 1575 0.000 28.36 12.31 0.639 ----- ----- ----- ----- ----- ----- ----- 0.639 1578 0.000 28.35 12.31 0.638 ----- ----- ----- ----- ----- ----- ----- 0.638 Continues on next page... 7 POND Hydrograph Discharge Table Time Inflow Elevation Clv A Clv B Clv C PfRsr Wr A Wr B Wr C Wr D Exfil Outflow (min) cfs ft cfs cfs cfs cfs cfs cfs cfs cfs cfs cfs 1581 0.000 28.35 12.31 0.638 ----- ----- ----- ----- ----- ----- ----- 0.638 1584 0.000 28.35 12.31 0.637 ----- ----- ----- ----- ----- ----- ----- 0.637 1587 0.000 28.35 12.31 0.637 ----- ----- ----- ----- ----- ----- ----- 0.637 1590 0 000 28.35 12.31 0.637 ----- ----- ----- ----- ----- ----- ----- 0.637 1593 0 000 28.35 12.31 0.636 ----- ----- ----- ----- ----- ----- ----- 0.636 1596 0.000 28.35 12.31 0.636 ----- ----- ----- ----- ----- ----- ----- 0.636 1599 0.000 28.35 12.31 0.636 ----- ----- ----- ----- ----- ----- ----- 0.636 1602 0.000 28.35 12.31 0.635 ----- ----- ----- ----- ----- ----- ----- 0.635 1605 0 000 28.34 12.31 0.635 ----- ----- ----- ----- ----- ----- ----- 0.635 1608 0.000 28.34 12.31 0.635 ----- ---- ----- ----- ----- ----- ----- 0.635 1611 0.000 28.34 12.31 0.634 ----- ----- ----- ----- ----- ----- ----- 0.634 1614 0.000 28.34 12.31 0.634 ----- ----- ----- ----- ----- ----- ----- 0.634 1617 0.000 28.34 12.31 0.634 ----- ----- ----- ----- ----- ----- ----- 0.634 1620 0 000 28.34 12.31 0.633 ----- ----- ----- ----- ----- ----- ----- 0.633 1623 0.000 28.34 12.31 0.633 ----- ----- ----- ----- ----- ----- ----- 0.633 1626 0.000 28.34 12.31 0.632 ----- ----- ----- ----- ----- ----- ----- 0.632 1629 0.000 28.34 12.31 0.632 ----- ----- ----- ----- ----- ----- ----- 0.632 1632 0.000 28.34 12.31 0.632 ----- ----- ----- ----- ----- ----- ----- 0.632 1635 0.000 28.33 12.31 0.631 ----- ----- ----- ----- ----- ----- ----- 0.631 1638 0.000 28.33 12.31 0.631 ----- ----- ----- ----- ----- ----- ----- 0.631 1641 0.000 28.33 12.31 0.631 ----- ----- ----- ----- ----- ----- ----- 0.631 1644 0.000 28.33 12.31 0.630 ----- ----- ----- ----- ----- ----- ----- 0.630 1647 0.000 28.33 12.31 0.630 ----- ----- ----- ----- ----- ----- ----- 0.630 1650 0.000 28.33 12.31 0.630 ----- ----- ----- ----- ----- ----- ----- 0.630 1653 0.000 28.33 12.31 0 629 ----- ----- ----- ----- ----- ----- ----- 0.629 1656 0.000 28.33 12.31 0.629 ----- ----- ----- ----- ----- ----- ----- 0.629 1659 0.000 28.33 12.31 0.629 ----- ----- ----- ----- ----- ----- ----- 0.629 1662 0.000 28.32 12.31 0 628 ----- ----- ----- ----- ----- ----- ----- 0.628 1665 0.000 28.32 12.31 0.628 ----- ----- ----- ----- ----- ----- ----- 0.628 1668 0.000 28.32 12.31 0.628 ----- ----- ----- ----- ----- ----- ----- 0.628 1671 0 000 28.32 12.31 0.627 ----- ----- ----- ----- ----- ----- ----- 0.627 1674 0.000 28.32 12.31 0.627 ----- ----- ----- ----- ----- ----- ----- 0.627 1677 0.000 28.32 12.31 0.626 ----- ----- ----- ----- ----- ----- ----- 0.626 1680 0.000 28.32 12.31 0.626 ----- ----- ----- ----- ----- ----- ----- 0.626 1683 0.000 28.32 12.31 0.626 ----- ----- ----- ----- ---- ----- ----- 0.626 1686 0.000 28.32 12.31 0.625 ----- ----- ----- ----- ----- ----- ----- 0.625 1689 0.000 28.32 12.31 0.625 ----- ----- ----- ----- ----- ----- ----- 0.625 1692 0.000 28.31 12.31 0.625 ----- ---- ----- ----- ----- ----- ----- 0.625 1695 0 000 28.31 12.31 0.624 - ----- ----- ----- ----- ----- ----- ----- 0.624 1698 0.000 28.31 12.31 0.624 ----- ----- ----- ----- ----- ----- ----- 0.624 1701 0.000 28.31 12.31 0.624 ----- ----- ----- ----- ----- ----- ----- 0.624 1704 0.000 28.31 12.31 0.623 ----- ----- ----- ----- ----- ----- ----- 0.623 1707 0.000 2831 12.31 0.623 ----- ----- ----- ----- ----- ----- ----- 0.623 1710 0.000 28.31 12.31 0.623 ----- ----- ----- ----- ----- ----- ----- 0.623 1713 0.000 28.31 12.31 0.622 -- ----- ----- ----- ----- ----- 0.622 1716 0.000 28.31 12.31 0.622 ----- ----- ----- ----- ----- ----- ----- 0.622 1719 0.000 28.30 12.31 0.622 ----- ----- ----- ----- ----- ----- ----- 0.622 1722 0.000 28.30 12.31 0.621 ----- ----- ----- ----- ----- ----- ----- 0.621 1725 0.000 28.30 12.31 0.621 ----- ----- ----- ----- ----- ----- ----- 0.621 1728 0.000 28.30 12.31 0.620 ----- ----- ----- ----- ----- ----- ----- 0.620 1731 0.000 28.30 12.31 0.620 ----- ----- ----- ----- ----- ----- ----- 0.620 1734 0.000 28.30 12.31 0.620 ----- ----- ----- ----- ----- ----- ----- 0.620 1737 0.000 28.30 12.31 0 619 ----- ----- ----- ----- ----- ----- ----- 0.619 Continues on next page... Pond Report 12 Hydraflow Hydrographs by Intelisolve v9.1 Thursday, Mar 26, 2009 Pond No. 1 - POND Pond Data Contours - User -defined contour areas. Conic method used for volume calculation. Begining Elevation = 27 20 it Stage / Storage Table Stage (ft) Elevation (it) 0.00 27.20 0.80 28.00 1 80 29.00 280 30.00 380 31 00 Culvert / Orifice Structures Contour area (scift) Incr. Storage (cuft) Total storage (cult) 97,614 0 0 106,062 81,439 81,439 110,038 108,033 189,472 114,070 112,037 301,509 118,159 116,097 417,606 Weir Structures [A] [B] [C] [PrfRsr] [A] [B] [C] [D] Rise (in) = 3600 5.00 0.00 0.00 Crest Len (it) = 20.00 50.00 0.00 0.00 Span (in) = 3600 5.00 0.00 000 Crest El. (ft) = 28.85 28.85 000 0.00 No. Barrels = 1 1 1 0 Weir Coeff. = 3.00 3.00 333 3.33 Invert El. (ft) = 25.85 27.20 0.00 0.00 Weir Type = Broad Broad -- --- Length (ft) = 62.00 0.00 0.00 000 Multi -Stage = Yes No No No Slope (%) = 0.90 0.00 0.00 nia N-Value = 010 .013 .013 nia Orifice Coeff. = 0.60 0.60 0.60 0.60 Exftl.(in/hr) = 0 000 (by Contour) Multi -Stage = nta Yes Yes No TW Elev. (ft) = 000 Note CuN.M(DrRce outflow are analyzed under inlet (n) and outlet (oc) control Weir risers checked for orifice conditions (ic) and submergence (s) Stage / Storage / Discharge Table Stage Storage Elevation Clv A Chi 8 Clv C PrfRsr Wr A Wr B Wr C Wr D Exftl User Total It cult ft cfs cis cis cfs cfs cfs cis cfs cis cfs cis 0.00 0 27.20 0.00 000 --- -- 000 000 --- -- --- -- 0.00 008 8,144 2728 12.31 is 0 02 lc --- -- 000 0.00 --- -- --- -- 0.02 016 16,288 27.36 12.31 is 0 07 lc --- -- 000 000 --- -- -- -- 007 0.24 24,432 27.44 12.31 is 0 14 lc --- -- 000 0.00 -- -- --- -- 014 0.32 32,576 27.52 12.31 is 0 22 lc -- -- 0.00 0.00 -- -- - --- 022 0.40 40,719 27.60 12.31 is 0.29 is -- - 0.00 0.00 - -- - - 029 0.48 48,863 27.68 1231 is 0.34 is -- - 0.00 0.00 - - -- -- 0.34 0.56 57,007 27.76 12.31 is 0.39 is -- - 0.00 0.00 -- - -- -- 0.39 0.64 65,151 27.84 12.31 is 0.43 is -- -- 0.00 0.00 -- --- --- - 0.43 0.72 73,295 27.92 12.31 is 0.47 is --- --- 0.00 000 -- -- --- - 0.47 0.80 81,439 28.00 12.31 is 0,50 is -- --- 0.00 000 --- --- -- -- 0.50 0.90 92,242 28.10 12.31 is 0 55 lc --- -- 0.00 000 -- --- --- --- 0.55 1 00 103,046 28.20 12.31 is 0.58 is --- --- 000 000 --- --- -- --- 0.58 1.10 113,849 28.30 12.31 is 0 62 lc --- --- 000 0.00 --- --- --- --- 0.62 1.20 124,652 28.40 12.31 is 0 65 lc --- -- 000 0.00 --- --- --- --- 0.65 1 30 135,456 28.50 12.31 is 0 69 lc --- -- 000 0.00 --- --- --- --- 0.69 1 40 146,259 2860 12.31 is 0.72 is -- -- 0.00 000 --- --- -- --- 0.72 1 50 157,062 2870 12.31 is 0.75 is -- --- 000 0.00 --- --- -- --- 0.75 1.60 167,865 2880 1231 is 0.77 lc -- - 000 0.00 --- -- --- --- 0.77 1.70 178,669 2890 1231 is 0.80 is -- - 0.67 1.68 --- -- 3.15 1.80 189,472 29.00 1231 lc 0.83 is -- - 3.49 8.71 - - 1303 1.90 200,676 29.10 12.31 lc 0.85 is -- -- 7.50 1875 -- -- - -- 27 10 200 211,879 29.20 13.41 tc 0.88 is - - 1242 31 06 -- -- - - 44.36 210 223,083 29.30 18.97 is 0.86 is -- -- 18.11 45.28 - --- -- -- 64.25 2.20 234,287 29.40 25.25 oc 0.77 is -- -- 24.47 61.18 - -- -- --- 86.43 2.30 245,490 29.50 32.01 oc 0 56 is -- -- 31.44 78.61 -- --- --- --- 110.61 2.40 256,694 29.60 37.25 oc 0.49 is -- -- 36.76 s 97.43 --- --- --- -- 13468 2.50 267,898 29.70 41 41 oc 0.45 is --- --- 40.96 s 11755 --- --- --- --- 15896 2.60 279,101 29.80 44 92 oc 0.42 is --- -- 44 50 s 13889 --- --- --- --- 18380 2.70 290,305 29.90 47 96 oc 0.39 lc --- --- 47.57 s 161 39 --- --- --- --- 209.34 280 301,509 30.00 50 65 oc 0.36 is --- -- 50.28 s 18499 --- --- --- -- 235.63 2.90 313,118 30.10 53.07 oc 0.34 is -- --- 52.72 s 209.63 --- -- --- --- 26269 3.00 324,728 30.20 55.08 is 0.32 is --- --- 54.76 s 23528 --- --- -- --- 29036 3.10 336,338 30.30 56.45 lc 0.29 is --- - 56.15 s 261 90 --- --- -- --- 318.35 320 347,948 3040 57.73 tc 0.27 is -- - 57.46 s 289.46 --- --- -- - 347.19 330 359,557 3050 58.93 is 0.26 is -- -- 58.67 s 317.92 -- - - - 376.84 Continues on next page 13 POND Stage / Storage / Discharge Table Stage Storage Elevation Clv A ft Cuft ft Cfs 340 371,167 30.60 60.08 is 350 382,777 30.70 61.17 is 3.60 394,386 30.80 62.23 is 370 405,996 30.90 63.25 is 3.80 417,606 31.00 64.24 is .End Clv B Clv C PrfRsr Wr A Wr B Wr C Wr D Exfil User Cfs Cfs Cfs Cfs Cfs Cfs Cfs Cfs Cfs 0.24 is -- -- 59.82 s 347.25 --- --- --- -- 0.23 is --- --- 60.94 s 377.44 -- --- -- — 0.21 is -- -- 62.00 s 408.45 --- -- -- -- 0.20 is --- -- 63 03 s 440.27 --- --- --- --- 0.19 is --- -- 64.04 s 472.88 — Total Cfs 407.32 438.61 47067 503.51 537.11 WITHERS &- RAVENEL February 5, 2009 NCDENR Division of Water Quality 127 Cardinal Drive Extension Wilmington, NC 28405 Re: Request for Additional Information Hampstead Business Park ENGINEERS IPLANNERS ISURVEYORS I. FEB 0 5 2009 We have received your request for additional information, dated January 26, 2009. The following notes outline our responses to your requests and address how the requests have been addressed, and identify the changes to the plan: 1. Please locate each BMP and all swales in access/drainage easements, to be recorded. Response: The BMP's are located on their own lot which when recorded will have easements associated with it. A note has been added to sheets C- 4.1 & C-4.2 to this effect. 2. Please provide more detail offlow path on plans, from each inlet through the pond to the outlet .structure. Forebay and flow path layout should prevent short- circuiting through the pond. Flow path must have a minimum length to width ratio of 3:1. Artificial baffles of timber, vinyl or earth can be used to create longer f ow path. The top elevation of the baffle should beset at the temporary pool elevation or higher. Response: The flow paths are shown on Sheet C-3.2. The width of the basin is 180' with flow paths from the inlets to the outlet structure of 600' & 550' which are greater than 3:1. � 5wt ��rFf ? p.C•'I.L 3. Please provide original contours, proposed contours, pie inverts, pipe sizes, drop inlet inverts, swale inverts, etc. throughout entire grading/drainage plan. Response: All contours, pipe inverts, pipe sizes are shown on sheets C- 4.1 & C-4.2. 4. Please provide pertinent elevations for all pond contours, noting especially the bottom, the permanent pool, the temporary pool, the SHWT, and the weir elevation between the main pond and the forebay. Show the 10' vegetated shelf extending 6" below and 6" above the permanent pool elevation. 1410 Commonwealth Drive, Suite ioi Wilmington, North Carolina 28403 tel: 910-256-9277 fax: 910-256-2584 www.withersravenel.com WITHERS & RAVENEL ENGINEERS IPLANNERS ISURVEYORS Response: All elevations are clearly shown on Sheet C-5 the Pond Details sheet. 5. Please show dimensions of each line and arc formed by the permanent pool contour. / Response: Permanent Pool dimensions are shown on sheet C-3.2. 6. Revise outlet structure detail to more accurately show the 6" PVC outlet pipe to the infiltration area. ✓ Response: This comment has been previously addressed. 7. Please show the proposed contours of the infiltration area. / Response: The contours for the infiltration area are shown on Sheet C- 4.2. 8. Please provide a detail of the FES outlet pipe to the drainage ditch, including elevations, and riprap energy dissipater. Response: The detail for the riprap at the outlet is shown on sheet C-5. 9. Please add a note on the plans stating that all roof drainage shall be directed to the pond. Response: A note is on Sheet C-4.1, C-4.2 & C-5 stating that all impervious surfaces including roof areas are to be drained to the detention pond. 10. Please remember that a change to one number may have a domino effect on other numbers. Please check all plans, calculations and forms and make changes as needed. Response: Revisions are attached. 1410 Commonwealth Drive, Suite iol Wilmington, North Carolina 28403 tel: 910-256-9277 fax: 910-256-2584 www.withersravenel.com WITHERS & RAVENEL ENGINEERS IPLANNERS ISURVEYORS I trust the responses to the comments will adequately address your concerns. Please contact me immediately at (910)256-9277 or gpape@withersravenel.com if you have any questions or require additional information. Sincerely, WITHE S &RAVENEL, INC. Garry S. P e, P.E. Project Manager 1410 Commonwealth Drive, Suite ioi Wilmington, North Carolina 28403 tel: 910-256-9277 fax: 910-256-2584 www.withersravenel.com Re- Outl& JtruOire Subject: Re: Outlet Structure From: Steve Pusey <Steven.Pusey@ncmail.net> Date: Mon, 02 Feb 2009 10:52:21 -0500 To: Gant' Pape <GPape@withersravenel.com> Garry, I understand that the referral permit was just for the outlet structure detail. However, it simply brought out some other points that I thought may be important. In conclusion, I appreciate that you have calculated the discharge velocity being 2 ft/s or less for a 10-year storm. We just need for you to submit these calculations for our review. Furthermore, concerning the pipe sizes, inverts,etc., we require that you provide general plans showing the overall drainage design for the project. This should include location, sizes, and critical elevations for roads, pipes, manholes, curb inlets, curb cuts, swales, etc. as applicable. In addition to size, we will need slopes and inverts for the piping. For example, you show the road location and size but where are the curb inlets? What are the proposed elevations? How will the stormwater drain? Will all pipe locations be as shown on the plans? We do not need the piping design for each individual tract, only the overall plan. I hope this helps to clarify our requirements. If you have any questions, please don't hesitate to call. Best regards, Steve Posey DWQ Garry Pape wrote: Steve, I think you are confusing 2 different comments. The referral to Permit # SWS 080305 was just for the outlet structure detail, showing that a similar detail had been previously approved because you were looking for more detail on the 6" pipe fastened to the side of the box and I wasn't sure how to provide that because it's just something that will be worked out with the contractor. Also as far as the velocity for the discharge into the ditch I've preformed the calcs and the discharge is less than 2.0 ft/s so no lining would be required. - Garry From: Steve Pusey[ma ilto:Steven. Pusey@ncmai1.net] Sent: Friday, January 30, 2009 5:51 PM To: Garry Pape Subject: Re: Outlet Structure Garry, Thanks for your e-mail. 1 researched this issue by reviewing Permit # SW8 080305, Monkey Junction Storage. This project had a wet pond that discharged into wetlands via a riprap apron. Most likely, it would not have been permitted that way today. Instead, a level spreader would be I of 3 2/2/2009 10:53 AM Re: Outl&`truct&e required in lieu of riprap so that the flow is non -erosive for a 10-yr storm. Things are now different under the new Stormwater Rules of Oct.1, 2008. To summarize, according to the new Session Law 2008-21 1, Section 2.(b)(1)b.4-5, "Stormwater runoff from the development that is in excess of the design volume must flow overland through a vegetative filter... Vegetative buffers and filters required by this section and any other buffers or filters required by State Water Quality ... rules ... may be met concurrently and may contain, in whole or in part, coastal, isolated, or 404 jurisdictional wetlands that are located landward of the normal waterline." So, you may use the wetlands as a vegetative filter in this case, however, a level spreader would also be required in accordance with Section 2.(b)(1)c.2. This section states "Diffuse flow of stormwater at a non -erosive velocity to a vegetative buffer or other natural area..." The term "diffuse flow" means that a level spreader device is required so that the flow is non -erosive. Non -erosive for wetlands is considered as being above 2 ft/s for a 10-yr. storm. There is also another mention in Session Law 2008-21 1, Section 2.(b)(3)b.4, concerning other coastal development, that states "Stormwater runoff from built upon areas that is directed to flow through any wetlands shall flow into and through these wetlands at a non -erosive velocity. In the case of this project, Hampstead Business Park, the discharge pipe for excess flow is directed to a swale. This swale must be properly lined so as to be non -erosive for a 10-yr. storm. The lining could be centipede grass, bermuda, grass, or other channel lining material. You must show this in your calculations. If necessary, a level spreader could be used. I will get back with you next week about the pipe sizing, inverts, etc. I hope you find this e-mail helpful. Regards, Steve Garry Pape wrote: Steve, Thanks again for meeting with me to go over the comments, I think it will be helpful in getting this project finalized more efficiently. The other projects I've had approved using the same outlet structure detail with the drawdown pipe attached to the side of the box were SW8 080501 (Echo Farms Tract 6A Phase 1) & SW8 080305 (Monkey Junction Storage - Leland). Chris Baker approved Echo Farms and Christine Nelson approved Monkey Junction Storage. Thanks. - Garry GARRY S. PAPE, P.E. WITHERS & RAVENEL ,q,o Conrrtwww alth OrRe, Unit io, I Wilmington, N C 2303 tel: 9,0 25693771 fu 910.:56.x586 7,�ri4l4lt4t1 1T4M_r—T7 110r, 2 of 3 2/2/2009 10:53 AM Re: Outltt'Struc'tttt'e NOTICE OF CONFIDENT WLITY AND NONUISCLO5URE this electronic message, which includes any attachments and other ducmne tits referred to hemtn, writains information from Withers & Ravencl, Inc. that may be la mlly privileged and confide nI!a 1. The inforamuon is intended far the use of the add ressee(s),onty, If you are not the addressee, note that a ny disclosure, copying, print rig, distributic n, or use of file contents of this messa9r is prohibited if you received this message it error, please advise the sender try reply and delete lh is electronic message and any attachments. COPYRIGIfI NOTICE: Copyright 2418 by %''Ithcrs & Rave rml, InC. All Rights Reserved by Withers & Ravenel, Inc. This notice applies to thiselectronic message, all attachments thereto, and all documents referred to lherem. 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Steve Pusey Environmental Engineer NCDENR - Division of Water Quality Wilmington Regional Office 910-796-7334 Steve Pusey Environmental Engineer NCDENR - Division of Water Quality Wilmington Regional Office 910-796-7334 3 of 2/2/2009 10:53 AM WArS,9 P 11 r_ Beverly Eaves Perdue, Governor Dee Freeman, Secretary North Carolina Department of Environment and Natural Resources Coleen 14 Sullins, Director Division of Water Quality Jeff Beaudoin, Owner PO Box 538 Hampstead, NC 28443 January 26, 2009 Subject: Request for Additional Information Stormwater Project No. SW8 081114 Hampstead Business Park Pender County Dear Mr. Beaudoin: The Wilmington Regional Office received a State Stormwater Management Permit Application for Hampstead Business Park on November 10, 2008. A preliminary review of that information has determined that the application is not complete. The following information is needed to continue the stormwater review: .J. Please locate each BMP and all swales in access/drainage easements, to be recorded. 22.. Please provide more detail of flow path on plans, from each inlet through the pond to the outlet structure. Forebay and flow path layout should prevent short-circuiting through the pond. Flow path must have a minimum length to width ratio of 3:1. Artificial baffles of timber, vinyl, or earth can be used to create a longer flow path. ( The top elevation of the baffle should be set at the temporary pool elevation or higher. 3. Please provide original contours, proposed contours, pipe inverts, pipe sizes, drop inlet inverts, Swale inverts, etc. throughout entire grading / drainage plan. J4. Please provide pertinent elevations for all pond contour noting especially the bottom, the permanent pool, the temporary pool, the H , and the weir elevation between the main pond and the forebay- Show the 10" etated shelf extending 6" below and 6" above the permanent pool elevation. OPlease show dimensions for each line and arc formed by the permanent pool contour. OS 6. Revise outlet structure detail to more accurately show the 6" PVC outlet pipe to the �tl� infiltration area. e �7. Please show the proposed contours of the infiltration area. Please provide a detail of the FES outlet pipe to the drainage ditch, including C✓ S elevations, and riprap energy dissipater. 9.Please add a note on the plans stating that all roof drainage shall be directed to the �J pond. NortliCarolina Naturally North Carolina Division of Water Quality 127 Cardinal Drive Extension Wilmington, NC 28405 Phone (910) 796-7215 Customer Service Wilmington Regional Office Internet w ,v ncwaterauahtv.ore Fax (910) 350-2004 1-877-623-6748 An Equal Opportunity/Affirmative Action Employer - 50 % Recycled/10% Post Consumer Paper Jeff Beaudoin January 26, 2009 Stormwater Application No. SW8 081114 10. Please remember that a change to one number may have a domino effect on other numbers. Please check all plans, calculations and forms and make changes as needed. Please note that this request for additional information is in response to a preliminary review. The requested information should be received in this Office prior to February 24, 2009, 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, email 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 Division is allowed 90 days from the receipt of a completed application to issue the permit. 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) 796-7215 or email me at steven.pusey@ncmail.net: Sincerely, . ' -"�/ Steve G. Pusey Environmental Engineer ENB/sgp: S:\WQS\STORMWATER\ADDINFO\2007\081114.jan09 cc: Garry S. Pape, Withers & Ravenel, Wilmington, NC Steve Pusey Page 2 of 2 WITHERS & RAVENEL ENGINEERS IPLANNERS ISURVEYORS 1410 Commonwealth Drive, Suite ioi WILMINGTON, NORTH CAROLINA, 28403 (930) 256-9277 FAX (910) 256-2584 To: Mary Jean Naugle NC Division of Water Quality 127 Cardinal Drive Ext. Wilmington, NC 284o5 LETTER OF TRANSMITTAL DATE 12/0 /08 JOB NO. O 080 .00 ATTENTION PHONE # RE: Hampstead Business Park Stormwater Permit (Conventional) SW8o8111 VVti WE ARE SENDING YOU ❑ Attached ❑ Under separate covervia the following items: ❑ Shop Drawings ❑ Prints ® Plans ❑ Samples ❑ Specifications ❑ Copy of Letter ❑ Change order ❑ Diskette ® Calculations COPIES DESCRIPTION 2 Sets of plans for state stormwater permit 1 Copies of NCDWQ calculations THESE ARE TRANSMITTED as checked below: ® For approval ❑ Approved as submitted ❑ Resubmit copies for approval ❑ For your use ❑ Approved as noted []Submit _copies for distribution ❑ As requested ❑ Returned for corrections ❑ Return corrected prints ❑ For review and comment ❑ ❑ FOR BIDS DUE ❑ PRINTS RETURNED AFTER LOAN TO US REMARKS: For review and a COPYTO: File SIGNED: - Gam S. Pa If enclosures are not as noted, kindly notify us at once. Stormwater Application for Hampstead Business Park Subject: Stormwater Application for Hampstead Business Park From: Mary Jean Naugle <Mary.Naugle@ncmail.nev Date: Wed, 03 Dec 2008 09:58:08 -0500 To: gpape@withersravenet.com, Mary Naugle <Mary.Naugle@ncmail.n&t Gary; I did the preliminary completeness review of your stormwater application and noticed the following: 1. need to use a maximum of 7.5 feet for the average depth on pond to figure the SA/DA ratio. you need to provide calcs for the avg depth determination. check the erata sheet for the bmp 10-5 since it added a figure and example calcs. the bmp is at: tp://h2o.enr.state.nc.us/su/bmp forms.htm. the erata sheet is at: http://h2o.enr.state.nc.us/su/documents/BMPManuaiErrata 7.doc. 2. provide north arrow on plan C-2 and/or C3.1. 3. provide bearings and distances on lot lines since the deed restrictions indicate you intend to subdivide and sell lots. 4. need easement on plans for stormwater pipe/system, especially on each lot. dedicated common areas for the pond are ok. 5. are there any wetlands within the property area? you included a note for no 404 wetlands, but what about 401 and/or isolated wetlands. The applicant will receive the note for acceptance into the regular stormwater program, but I just wanted to let you know that i noticed these so that you can address them while the permit is in line for review so it won't hold up your review time. Mary Jean 1 of 1 12/3/2008 9:58 AM "ei'vAlAnv0 CbA)RETET e0"'1 ET -CI A L, Checklist for Completeness Review of Stormwater Applications ouTFgec t✓ PaND OGT• t 4.-L%.LE Each application for which a "Completeness Review" is needed will have this checklist printed on yellow paper to distinguish it from other applications to be reviewed. ❑ Read the narrative and application to determine the type of project, i.e., residential vs commercial, subdivision vs. single lot, high density, low density, offsite, redevelopment, and determine what documentation needs to be provided. Make sure that all required forms, supplements, O&M's, deed restrictions, signature authorizations, etc., are included and contain original signatures. �-- If low density, make sure the BUA calculations include any common areas, clubhouse areas, etc., and do a quick math check for addition errors. ❑ Do a quick consistency check of the numbers used in the calculations vs. the numbers reported on the application. For multiple BMP's pick one or two to check. 'ET Ownership issues? Make sure the correct person has signed the application. If it's a corporation or LLC, print off the NCSOS information sheet and latest annual report. Make 0�yr sure the person who signed is listed on the annual report with his/her correct title, or make [� sure a signature authorization letter has been provided. Make 2 sure sets of plans have been submitted, and that they include grading, layout (with dimensions for all proposed BUA) and details. the Wetlands delineated on the plans? Y N By whom? NUV-67 �014 yAre If the project drains to SA waters, make sure a USGS topo map with the site, the receiving rd m'` waters and the'/2 mile radius clearly shown to scale is provided. For high density projects, make sure the correct design storm is used, based on the receiving stream classification and the projects proximity to SA waters. ❑ Make sure appropriate details are provided such as roads, cul-de-sacs, curbing, sidewalk, BMP's, level spreaders, vegetated filter strips, curb outlet swales, etc. Two of the most common errors are that sidewalk is indicated on the plans, but not included in the BUA calcs or shown with the road detail, and the road width used in the BUA calculations is less than that shown on the road detail. re there any issues within the 575 ft ORW AEC? If high density, make sure the plans and calculations are n sealed and dated. If the project involves the subdivision of property or out arcel make sure a copy of the Proposed Declaration of Covenants and Restrictions in legal format with all required statements is provided, or that the appropriate standard deed restriction template, signed and ^/ notarized, is provided. L� Make sure that a Soils Report for all projects is provided, to determine if the required separation to the SHWT is provided. For multiple HD systems & curb outlet swales, make sure a drainage area map is provided. If the application is substantially incomplete, give the entire file with the check to admin (Jo Casmer) to be returned to the applicant. Jo will keep copies of the return letters, application & check. ❑ If the application lacks only a few minor items such that it can be made complete within 24 hours, you can email the consultant and request the information. Hold onto the package for 24 hours. If the information isn't received within 24 hours, give the application to Jo to return. For Offsite projects: The Designer's Certification for the offsite system has been submitted. The deed restrictions have been recorded and a copy submitted. The offsite system is in compliance with its permit. Make sure the lot size hasn't changed from what was approved under the Master Plan and that the correct lot number is referenced on the supplement form. For Infiltration projects: Soils report to determine SHWT, soil type and expected infiltration rate is provided. Has Vincent conducted the site investigation? If Yes, date? For infiltration projects, the maximum 2 acre inches of volume in any single system has not been exceeded. For Wet Ponds projects: [� Permanent pool to be located no lower than 6" below the estimated SHWT. Otherwise, the incoming groundwater must be quantified and evaluated; the storage volume must be verified; and the outlet needs to be evaluated for free drainage to the receiving waters under SHWT conditions -aEC F K S:\WQS\STORMWATER\FORMS\COMPLETENESS REVIEW n G WITHERS & RAVEN ENGINEERS I PLANNERS 1 SURVEYOI 1410 Commonwealth Drive, Suite ioi/ NOV 1 0 2( WILMINGTON, NORTH CAROLINA, 2840 (910)256-9277 FAX (910) 256-2584 To: David Cox NC Division of Water Quality 127 Cardinal Drive Ext. Wilmington, NC 28405 WE ARE SENDING YOU ❑ Shop Drawings ❑ Copy of Letter OFT° ° NSMlMAL Qp� I11ll30� 8 loallo. O 080] .00 ATTENTION I .(avid Cox PHONE M3/ RE: Ham stead Business Park Stormwater Permit (Conventional) ❑ Attached ❑ Under separate cover via ❑ Prints ® Plans ❑ Samples ❑ Change order ❑ Diskette ® Other the following items: ❑ Specifications COPIES DESCRIPTION 2 Sets of plans for state stormwater permit 2 Copies of NCDWQ calculations 2 Stormwater Management Permit Application Forms (one original, one copy) 2 Wet Detention Basin Supplement (one original, one copy) 2 Wet Detention Basin Operation and Maintenance Agreement (one original, one copy) 2 Level Spreader Supplement (one original, one copy) 1 Level Spreader Operation & Maintenance Agreement 1 High Density Commercial Development Deed Restrictions & Covenants 1 T Application fee for $505.00 for conventional review THESE ARE TRANSMITTED as checked below: ® For approval ❑ Approved as submitted ❑ Far your use ❑ Approved as noted ❑ As requested ❑ Returned for corrections ❑ For review and comment ❑ ❑ FOR BIDS DUE ❑ PRINTS RETURNED AFTER LOAN TO US 7:hriG17'.(.7l For review and approval. COPYTO: File ❑ Resubmit ❑ Submit ❑ Return SIGNED: _ copies for approval copies for distribution corrected prints - Garry S. Pa If enclosures are not as noted, kindly notify us at once.