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HomeMy WebLinkAboutSW8081114_HISTORICAL FILE_20101223STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO. SW8 d 21114 DOC TYPE ❑ CURRENT PERMIT ❑ APPROVED PLANS HISTORICAL FILE ❑ COMPLIANCE EVALUATION INSPECTION DOC DATE 1-0\0 \113 YYYYMMDD 4 'Q;s r NC®ENR North Carolina Department of Environment and Beverly Eaves Perdue Governor December 23, 2010 Mr. Jeff Beaudoin PO Box 538 Hampstead, NC 28443 Division of Water Quality Colleen H. Sullins Director Natural Resources Subject: State Stormwater Management Permit No. SW8 081114 Hampstead Lifestyle Center High Density Subdivision Wet Pond Project Pender County Dear Mr. Beaudoin: Dee Freeman Secretary The Wilmington Regional Office received a complete State Stormwater Management Permit Application for Hampstead Lifestyle Center on December 22, 2010. Staff review of the plans and specifications has determined that the project, as proposed, will comply with the Stormwater Regulations set forth in Session Law 2008-211 and Title 15A NCAC 2H.1000. We are forwarding Permit No. SW8 081114 dated December 23, 2010, 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 Kelly Johnson, or me at (910) 796-7215. Sincerely, dtZcott Stormwater Supervisor Division of Water Quality GDS/kpj: S:\WQS\STORMWATER\PERMIT\081114 dec10 cc: Garry Pape, PE Inspector, Pender County Inspections Division of Coastal Management Wilmington Regional Office Wilmington Regional Office 127 Cardinal Drive Extension, Wilmington, North Carolina 28405 1��One 1. Phone 910-796-72151 FAX 910-350-20041 Customer Service: 1-877-623.6748 L y Q Ctr ! Caroli n a Internet. vnnv.ncwateryuality.org Jhatur�rllJ An Equal Oppodumty 1 Affirmative Action Employer 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 SUBDIVISION 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 Hampstead Lifestyle Center Country Club Road, Hampstead, Pender County FOR THE construction, operation and maintenance of one wet detention pond in compliance with the provisions of Session Law 2008-211 and 15A NCAC 2H .1000 (hereafter separately and collectively referred to as the "stormwater rules') and the approved stormwater management plans and specifications and other supporting data as attached and on file with and approved by the Division of Water Quality and considered a part of this permit. This permit shall be effective from the date of issuance until April 2, 2019 and shall be subject to the following specified conditions and limitations: I. DESIGN STANDARDS 1. 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 of this permit. The subdivision is permitted for the phased development of Hampstead Lifestyle Center, Outparcel #1 and Outparcel #2 to drain to the pond described in Section 1.8 of this permit. This subdivision is also permitted for two additional parcels, Parcel B and Parcel C, which are not permitted to drain to the pond described in Section 1.8 of this permit. The owner of each of these parcels, Parcels B and C, must provide an engineered stormwater Best Management Practice (BMP) that is sized to store and treat the runoff from their parcel as well as any area that drains to their parcel as offsite drainage, per the applicable North Carolina Stormwater rules found in NCAC 2H.1000 and SL 2008-211. 3. The runoff from all built -upon area within the permitted drainage areas of this project must be directed into the permitted stormwater control systems. The wet pond has been designed to treat the runoff from 273,630, square feet of Built - Upon Area. Page 2 of 11 State Stormwater Management Systems Permit No. SW8 081114 4. A 50' wide vegetative buffer must be provided adjacent surface waters, measured horizontally from the normal pool of impounded structures, the banks of each side of streams and rivers and the mean high water line of tidal waters. The wet detention pond may not be located within the buffer and no built -upon area is allowed within the buffer. 5. 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. The following design elements have been permitted for this wet detention pond stormwater facility, and must be provided in the system at all times. a. Drainage Area, acres: Onsite, ft2: Offsite, ft2: b. Total Impervious Surfaces, ft2: Lot BUA, ft2: Roads/Parking, ft2: Sidewalks, ft2: Other, ft2: Future, W. Offsite, ft2: c. Average Pond Design Depth, feet: d. TSS removal efficiency: e. Design Storm: f. Permanent Pool Elevation, FMSL: g. Permitted Surface Area @PP, ft2: h. Permitted Temporary Storage Volume, ft3: i. Temporary Storage Elevation, FMSL: j. Predevelopment 1 yr-24 hr. discharge rate, cfs: k. Controlling Orifice: I. Orifice Flowrate, cfs m. Permanent Pool Volume, ft3: n. Forebay Volume, ft3: o. Maximum Fountain Horsepower: p. Receiving Stream / River Basin: q. . Stream Index Number: r. Classification of Water Body: II. SCHEDULE OF COMPLIANCE 11.8 514,138 0 273,630 53,500 125,000 630 15,500 79,000 0 3.5 90% 1.5 26.7 36,330 79,406 28.5 0.258 3.0"0 pipe 0.18 108,614 23,152 1/3 UT to Old Topsail Creek Cape Fear 18-87-12 "SA" (outside half 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 routine monitoring of the project's built -upon area and verifying that the built -upon area for the entire project and for each lot does not exceed the maximum allowed by this permit. Once the lot transfer is complete, the lot owner may not increase the built -upon area above the permitted maximum for that lot without approval from both the permittee and the Division of Water Quality. The permittee shall not approve any requests for additional built - upon area on any lot without first submitting for and receiving a permit modification from the Division. Page 3 of 11 State Stormwater Management Systems Permit No. SW8 081114 3. The permittee must maintain compliance with the overall BUA limit for the project established by this permit, the permit documents and the recorded deed restrictions. If any lot is found to have exceeded the permitted BUA limit for that lot without the approval of the Division and the permittee, the permittee shall notify the lot owner in writing and require resolution. 4. If an Architectural Review Board or Committee is set up by the permittee to review new and modified lot plans for compliance with the BUA limit, the plans reviewed must include all proposed built -upon area. Any approvals given by the Board or Committee on behalf of the permittee do not relieve the permittee or the lot owner of the responsibility to maintain compliance with the BUA limit established by the permit and in the recorded deed restrictions. 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. 6. 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. 7. 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. 8. Prior to the construction of any permitted future development areas shown on the approved plans, the permittee shall submit final site layout and grading plans to the Division for approval. 9. 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. 10. During construction, erosion shall be kept to a minimum and any eroded areas of the system will be repaired immediately. 11. 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. Page 4 of 11 State Stormwater Management Systems Permit No. SW8 081114 12. 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. 13. 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. 14. 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. 15. 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. 16. Prior to transfer of the permit, the stormwater facilities will be inspected by DWQ personnel. The project and the stormwater facility must be in compliance with all permit conditions. Any items not in compliance must be repaired, replaced or restored to design condition prior to the transfer. Records of maintenance activities performed to date will be required. 17. If the permanent pool volume is greater than 30,000 cubic feet, a decorative spray fountain 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 1/3. 18. 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 shall submit the necessary forms and documentation to the permittee, or a designated agent, and receive approval prior to construction of the permeable pavement. Page 5 of 11 State Stormwater Management Systems Permit No. SW8 081114 19. Prior to the sale of Outparcel 1 or 2, the following deed restrictions must be recorded for Outparcels 1 and 2: 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 for Outparcel 1 is 35,000 square feet. The maximum built -upon area for Outparcel 2 is 44,000 square feet. 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. All runoff from the built -upon areas on the lot must drain into the permitted system. This may be accomplished through providing roof drain gutters, which drain to the pond or street, grading the lot to drain toward the street or directly into the pond, or grading perimeter swales and directing them into the pond or street. h. Built -upon area in excess of the permitted amount will require a permit modification. i. 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. j. If permeable pavement credit is requested, the property owner must submit a request, with supporting documentation, to the permittee and receive approval prior to construction of BUA. 20. Prior to the sale of Parcel B or C, the following deed restrictions must be recorded for Parcels B and C: 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. Page 6 of 11 State Stormwater Management Systems Permit No. SW8 081114 f. In lieu of a common Best Management Practice to be shared by all of the lots, the declarant has opted to require each owner of an individual lot to provide an engineered stormwater Best Management Practice (BMP) that is sized to store and treat the runoff from that lot and from any offsite drainage onto that lot, per the applicable North Carolina Stormwater rules found in NCAC 21-1.1000, or SL 2008-211 or SL 2006-246. g. The owner of each lot must submit a stormwater management permit application to the NC Division of Water Quality and receive a permit prior to any construction on the lot. h. At a minimum, all runoff on the lot must drain into the permitted system. This may be accomplished through one or a combination of one or more of the following: providing roof drain gutters which direct runoff into the system; grading the lot such that the runoff drains into the system; and/or grading perimeter swales which capture and direct runoff into the system. Any drainage entering the lot from the road right-of-way must be treated in the lot's proposed BMP. Any other drainage entering the lot from outside the lot's property boundary, can be rerouted around the lot's proposed BMP. If the other offsite drainage is not rerouted, it must be accounted for in the lot's proposed BMP. 21. 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. III. GENERAL CONDITIONS This permit is not transferable except after notice to and approval by the Director. At least 30 days prior to the sale of the property in whole or in part, a change of ownership, or a name change of the permittee or of the project, or a mailing address change, the permittee must submit a completed and signed Name/Ownership Change form, to the Division of Water Quality, accompanied by the supporting documentation as listed on the form. The approval of this request will be considered on its merits and may or may not be approved. . The permittee is responsible for compliance with all permit conditions until such time as the Division approves a request to transfer the permit. Neither the sale of the project in whole or in part, nor the conveyance of common area to a third party constitutes an approved transfer of the permit. 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 required by this Division, such as the construction of additional or replacement stormwater management systems. 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. Page 7 of 11 State Stormwater Management Systems Permit No. SW8 081114 7. 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 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 23`d day of December 2010. NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION By Authority of the Environmental Management Commission Permit Number SW8 081114 Page 8 of 11 State Stormwater Management Systems Permit No. SW8 081114 Master Permit No. SW8 081114 Lot # Drains To Offsite Permit Date Issued Offsite Project Name Allocated Proposed from No. BUA BUA Master Permit Pond Permitted To be To be To be 1 Under To be Determined 35,000 Determined Determined Determined SW8 081114 Pond Permitted To be To be To be 2 Under To be Determined 44,000 Determined Determined Determined SW8 081114 Individual BMP B Required for Lot Individual BMP C Required for Lot Page 9 of 11 State Stormwater Management Systems Permit No. SW8 081114 Hampstead Lifestyle Center Stormwater Permit No. SW8 081114 Pender County Designer's Certification Page 1 of 2 I, , as a duly registered in the State of North Carolina, having been authorized to observe (periodically/weekly/full time) the construction of the project, (Project) for (Project Owner) hereby state that, to the best of my abilities, due care and diligence was used in the observation of the project construction such that the construction was observed to be built within substantial compliance and intent of the approved plans and specifications. The checklist of items on page 2 of this form is a part of this Certification. Noted deviations from approved plans and specifications: Signature Registration Number Date SEAL Page 10 of 11 State Stormwater Management Systems Permit No. SW8 081114 Certification Requirements: Page 2 of 2 1. The drainage area to the system contains approximately the permitted acreage. 2. The drainage area to the system contains no more than the permitted amount of built -upon area. 3. All the built -upon area associated with the project is graded such that the runoff drains to the system. 4. All roof drains are located such that the runoff is directed into the system. 5. The outlet/bypass structure elevations are per the approved plan. 6. The outlet structure is located per the approved plans. 7. Trash rack is provided on the outlet/bypass structure. 8. All slopes are grassed with permanent vegetation. 9. Vegetated slopes are no steeper than 3:1. 10. The inlets are located per the approved plans and do not cause short- circuiting of the system. 11. The permitted amounts of surface area and/or volume have been provided. 12. Required drawdown devices are correctly sized per the approved plans. 13. All required design depths are provided. 14. All required parts of the system are provided, such as a vegetated shelf, a forebay, and the vegetated filter. 15. The required dimensions of the system are provided, per the approved plan. cc: NCDENR-DWQ Regional Office Inspector Pender County Building Inspections Page 11 of 11 DWQ USE ONLY Date Received Fee Paid Permit Number -7 '7 P Applicable Rules: (select all that apply) ❑ Coastal SW -1995 ❑ Coastal SW - 2008 ❑ Ph II - Post Construction ❑ Non -Coastal SW- HQW/ORW Waters ❑ Universal Stormwater Management Plan ❑ Other WQ M mt Plan: 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 1. GENERAL INFORMATION 1. Project Name (subdivision, facility, or establishment name -should be consistent with project name on plans, specifications, letters, operation and maintenance agreements, etc.): Hampstead Lifestyle Center 2. Location of Project (street address): City:Hampstead County:Pender Zip:28443 3. Directions to project (from nearest major intersection): From Us Hwy 17 north turn right onto Country Club Road Site is 1.3 Miles on the left 4. Latitude:34° 23' 30" N Longitude:77° 39' 50" W of the main entrance to the project. IL PERMIT INFORMATION: 1. a. Specify whether project is (check one): ❑New ®Modification b.lf this application is being submitted as the result of a modification to an existing permit, list the existing permit numberSW8081114 , its issue date (if known)04/02/2009 , and the status of construction: ®Not Started ❑Partially Completed* ❑ Completed* *provide a designer's certification 2. Specify the type of project (check one): ❑Low Density ®High Density ❑Drains to an Offsite Stormwater System ❑Other 3. If this application is being submitted as the result of a previously returned application or a letter from DWQ requesting a state stormwater management permit application, list the stormwater project number, if assigned, and the previous name of the project, if different than currently proposed, 4. a. 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 ❑NPDES Industrial Stormwater ®Sedimentation/Erosion Control: 12.00 ac of Disturbed Area 0404/401 Permit: Proposed Impacts b.lf any of these permits have already been acquired please provide the Project Name, Project/Permit Number, issue date and the type of each permit:Hampstead Lifestyle Center/PENDE-2011-006/09/29/2010 NOV 18 2010 FormSWU-101 Version07July2009 Page I of III. CONTACT INFORMATION 1. a. Print Applicant / Signing Official's name and title (specifically the developer, property owner, lessee, designated government official, individual, etc. who owns the project): Applicant/ Organization: leff Beaudoin Signing Official & Title:ieff Beaudoin - Owner b.Contact information for person listed in item I above: Street Address:PO Box 538 City:Hampstead Mailing Address (if applicable): City: Phone: (910 ) 547-3781 Email: State:NC Zip:28443 State: Zip: Fax: (910 ) 790-5917 c. Please check the appropriate box. The applicant listed above is: ® The property owner (Skip to Contact Information, item 3a) ❑ Lessee* (Attach a copy of the lease agreement and complete Contact Information, item 2a and 2b below) ❑ Purchaser* (Attach a copy of the pending sales agreement and complete Contact Information, item 2a and 2b below) ❑ Developer* (Complete Contact Information, item 2a and 2b below.) 2. a. Print Property Owner's name and title below, if you are the lessee, purchaser or developer. (This is the person who owns the property that the project is located on): Property Owner/ Signing Official & Title: b.Contact information for person listed in item 2a above: Street Address: City: State: Zi Mailing Address (if applicable): City: State: Zi Phone: ( 1- __- Fax: 3. a. (Optional) Print the name and title of another contact such as the project's construction supervisor or other person who can answer questions about the project: Other Contact Person Signing Official & b.Contact information for person listed in item 3a above: Mailing Address: City: State: Form SWU-101 Version 07July2009 Page 2 of Phone: Fax: 4. Local jurisdiction for building permits: Point of IV. PROJECT INFORMATION Phone #: 1. In the space provided below, briefly summarize how the stormwater runoff will be treated. wet detention basin 2. a. If claiming vested rights, identify the supporting documents provided and the date they were approved: ❑ Approval of a Site Specific Development Plan or PUD Approval Date: ❑ Valid Building Permit Issued Date: ❑ Other: Date: b.Identify the regulation(s) the project has been designed in accordance with: ❑ Coastal SW -1995 ❑ Ph II - Post Construction 3. Stormwater runoff from this project drains to the Cape Fear River basin. 4. Total Property Area: 28.55 acres 5. Total Coastal Wetlands Area: acres 6. Total Surface Water Area: acres 7. Total Property Area (4) - Total Coastal Wetlands Area (5) - Total Surface Water Area (6) = Total Project Aree:28.55 acres Total project area shall be calculated to exclude the followin the normal pool of impounded structures, the area between the banks of streams and rivers, the area below the Normal High Water (NHW) line or Mean High Water (MHW) line, and coastal wetlands landward fron the NHW (or MHW) line. The resultant project area is used to calculate overall percent built upon area (BUA). Non -coastal zetlands landward of the NHW (or MHW) Iune may be included in the total project area. 8. Project percent of impervious area: (Total Impervious Area / Total Project Area) X 100 = 53.2 % 9. How many drainage areas does the project have?1 (For high density, count 1 for each proposed engineered stormwater BMP. For low density and other projects, use 1 for the whole property area) 10. Complete the following information for each drainage area identified in Project Information item 9. If there are more than four drainage areas in the project, attach an additional sheet with the information for each area provided in the same format as below. NOV 2 2 2010 Form SWU-101 Version 07July2009 Page 3 of Basin Information Drainage Area 1 Drainage Area _ Drainage Area _ Drainage Area _ Receiving Stream Name UT to Old Topsail Creek Stream Class * SA Stream Index Number * 18-87-12 Total Drainage Area (so 514,138 On -site Drainage Area (so 514,138 Off -site Drainage Area (so Proposed Impervious Area** (so 273,630 % Impervious Area** total 53.2 Impervious— Surface Area Drainage Area 1 Drainage Area _ Drainage Area _ Drainage Area _ On -site Buildings/Lots (so 53,500 On -site Streets (so On -site Parking (so 125,000 On -site Sidewalks (so 630 Other on -site (so 15,500 Future (so 79,000 Off -site (so Existing BUA*** (so Total (so: 273,630 Stream Class and Index Number can be determined at: Itttp://h2o.enr.state. natts/bnns/reports/reportsWB.htnd " Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas, sidewalks, gravel areas, etc. Report only that amount of existing BUA that will remain after development. Do not report any existing BUA that is to be removed and which will be replaced by new BUA. 11. How was the off -site impervious area listed above determined? Provide documentation. Proiects in Union County: Contact DWQ Central Offrce staffto check if the project is located within a Threatened & Endangered Species watershed that may be subject to more stringent stormwater requirements as per NCAC 02B .0600. V. SUPPLEMENT AND O&M FORMS RF, 'I? The applicable state stormwater management permit supplement and operation andd``m'arntenance &M) forms must be submitted for each BMP specified for this project. The latest versions of the foV�rt� ci nSbee�downloa ied from htto://h2o.enr.state.nc.us/su/bmD IV I forms.htm. VI. SUBMITTAL REQUIREMENTS IPY' 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. A detailed application instruction sheet and BMP checklists are available from http://h2o.enr.state.nc.us/su/bmp forms.htm. The complete application package should be submitted to the appropriate DWQ Office. (The appropriate office may be found by locating project on the interactive online map athqp://h2o.enr.state.nc.us/su/msi maps.htm.) Please indicate that the following required information have been provided by initialing in the space provided for each item. All original documents MUST be signed and initialed in blue ink. Download the latest versions for each submitted application package from htW://h2o.enr.state.nc.us/su/bmp forms.htm. Ini ' s 1. Original and one copy of the Stormwater Management Permit Application Form. 2. Original and one copy of the signed and notarized Deed Restrictions & Protective Covenants Form. (if required as per Part VII below) �_ t, 3. Original of the applicable Supplement Form(s) (sealed, signed and dated) and O&M I `l/ agreement(s) for each BMP. 4. Permit application processing fee of $505 payable to NCDENR. (For an Express review, refer to http://www.envhelp.org/pages/onestopexpress.html for information on the Express program Form SWU-101 Version 07Ju1y2009 Page 4 of 7 - and the associated fees. Contact the appropriate regional office Express Permit Coordinator for additional information and to schedule the required application meeting.) 5. A detailed narrative (one to two pages) describing the stormwater treatment/managementfor the project. This is required in addition to the brief summary provided in the Project Information, item 1. 6. A USGS map identifying the site location. If the receiving stream is reported as class SA or the receiving stream drains to class SA waters within'/2 mile of the site boundary, include the mile radius on the map. _(\ 7. Sealed, signed and dated calculations. �! 8. Two sets of plans folded to 8.5" x 14" (sealed, signed, & dated), including: S� a. Development/Project name. b. Engineer and firm. c. Location map with named streets and NCSR numbers. d. Legend. e. North arrow. I. Scale. g. Revision number and dates. h. Identify all surface waters on the plans by delineating the normal pool elevation of impounded structures, the banks of streams and rivers, the MHW or NHW line of tidal waters, and any coastal wetlands landward of the MHW or NHW lines. • Delineate the vegetated buffer landward from the normal pool elevation of impounded structures, the banks of streams or rivers, and the MHW (or NHW) of tidal waters. i. Dimensioned property/project boundary with bearings & distances. j. Site Layout with all BUA identified and dimensioned. k. Existing contours, proposed contours, spot elevations, finished floor elevations. 1. Details of roads, drainage features, collection systems, and stormwater control measures. m. Wetlands delineated, or a note on the plans that none exist. (Must be delineated by a qualified person. Provide documentation of qualifications and identify the person who made the determination on the plans. n. Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations. o. Drainage areas delineated (included in the main set of plans, not as a separate document). p. Vegetated buffers (where required). 9. Copy of any applicable soils report with the associated SHWT elevations (Please identify elevations in addition to depths) as well as a map of the boring locations with the existing elevations and boring logs. Include an 8.5"Al" copy of the NRCS County Soils map with the project area clearly delineated. For projects with infiltration BMPs, the report should also include the soil type, expected infiltration rate, and the method of determining the infiltration rate. (Infiltration Devices submitted to WiRO: Schedule a site visit for DWQ to verify the SHWT prior to submittal, (910) 796-737&) 10. A copy of the most current property deed. Deed book: 3523 Page No: 295 11. For corporations and limited liability corporations (LLC): Provide documentation from the NC 1 Secretary of State or other official documentation, which supports the titles and positions held by the persons listed in Contact Information, item la, 2a, and/or 3a per NCAC 2H.1003(e). The corporation or LLC must be listed as an active corporation in good standing with the NC Secretary of State, otherwise the application will be returned. http:/ /www.secretary.state.nc.us/Corporations/CSearch.aspx RECEIVED NOV 1 � 2010 BY: Form SWU-101 Version 07July2009 Page 5 of 7 VII. DEED RESTRICTIONS AND PROTECTIVE COVENANTS For all subdivisions, outparcels, and future development, the appropriate property restrictions and protective covenants are required to be recorded prior to the sale of any lot. If lot sizes vary significantly or the proposed BUA allocations vary, a table listing each lot number, lot size, and the allowable built -upon area must be provided as an attachment to the completed and notarized deed restriction form. The appropriate deed restrictions and protective covenants forms can be downloaded from http://h2o.enr.state.nc.us/su/bmp forms.htmkdeed restrictions. Download the latest versions for each submittal. In the instances where the applicant is different than the property owner, it is the responsibility of the property owner to sign the deed restrictions and protective covenants form while the applicant is responsible for ensuring that the deed restrictions are recorded. By the notarized signature(s) below, the permit holder(s) certify that the recorded property restrictions and protective covenants for this project, if required, shall include all the items required in the permit and listed on the forms available on the website, 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. VIII. CONSULTANT INFORMATION AND AUTHORIZATION Applicant: Complete this section if you wish to designate authority to another individual and/or firm (such as a consulting engineer and/or firm) so that they may provide information on your behalf for this project (such as addressing requests for additional information). Consulting Engineer:Garry S. Pape. P.E. Consulting Firm: GSP Consulting Mailing Address:6626 Gordon Road, Unit C City:Wilmington State:NC Zip:28411 Phone: (910 ) 442-7870 Email:gpal2e@gsl2-consulting.com Fax: (910 ) 799-6659 IX. PROPERTY OWNER AUTHORIZATION (if Contact Inforniation, item 2 has been filled out, complete this section) 1, (print or hjpe name of person listed in Contact Information, item 2a) , certify that I own the property identified in this permit application, and thus give permission to (print or hlpe name of person listed in Contact Information, item la) with (print or hjpe name of organization listed in Contact Infornmtion, item Ib) to develop the project as currently proposed. A copy of the lease agreement or pending property sales contract has been provided with the submittal, which indicates the party responsible for the operation and maintenance of the stormwater system. RECEIVED NOV 18 2010 BY: Form SWU-101 Version 07Ju1y2009 Page 6 of As the legal property owner I acknowledge, understand, and agree by my signature below, that if my designated agent (entity listed in Contact Information, item 1) dissolves their company and/or cancels or defaults on their lease agreement, or pending sale, responsibility for compliance with the DWQ Stormwater permit reverts back to me, the property owner. As the property owner, it is my responsibility to notify DWQ immediately and submit a completed Name/Ownership Change Form within 30 days; otherwise I will be operating a stormwater treatment facility without a valid permit. I understand that the operation of a stormwater treatment facility without a valid permit is a violation of NC General Statue 143-215.1 and may result in appropriate enforcement action including the assessment of civil penalties of up to $25,000 per day, pursuant to NCGS 143-215.6. a Notary Public for the State of , County of do hereby certify that before me this _ day of personally appeared , and acknowledge the due execution of the application for a stormwater permit. Witness my hand and official seal, SEAL My commission X. APPLICANT'S CERTIFICATION I, (print or hjpe name of person listed in Contact Information, item 2) leffrey 1 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 the applicable stormwater rules under 15AA NCAC 2H .1000, SL 2006-246 (Ph. II - Post Construction) or SL 2008-211. Signature: �. /y`�1/�� Date: I, 1'GOL t � ��5 • 1L a Notar Public for the State of lyoeT 4 6a4l t Countyof N r✓W l*L,vww�y�ssr , do hereby certify that 5� � ? V�� ✓� personally appeared Y before me this day of Ala, Vera 6-r , ZOO, and 4knowledge the dQe execution of the application for a stormwater permit. Witness my hand and official seal, ....enenmm... S NOTARY PUBOO SEAL My commission expiresy'j'13 12A is- 7 CEIVED ov 18 2010 __—. Form SWU-101 Version 07July2009 Page 7 of 7 1-'a lkitt`r—, General Data: Impervious, Drainage Area and Volume PROJECT NUMBER: SW8 081114 Reviewer: K Johnson DRAINAGE BASIN: Cape Fear Current Date 23-Dec-10 Original Run Date: 13-Dec-10 DA Number 1 2 3 4 5 6 7 8 9 10 BMP Type Wet Pond No BMP In DA No BMP in DA No BMP In DA No BMP in DA No BMP in DA No BMP in DA No BMP in DA No BMP in DA No BMP 'n DA Receiving Stream UT Om Td,a l Creek Stream Index 18-87-12 Class Impervious Area Proposed Impervious ALL IMPERVIOUS Total ftd SA 273,630 0 0 0 0 0 0 0 0 0 Onsite Buildm s 53,500 Onsite Streets Onsite Parking 125,000 Onsite Sidewalks 630 Onsite Other 15,500 Future 79,000 Offsite Existing Prewoust -Permitted Impervious Old Rule, ft2 0 0 0 0 0 0 0 0 0 0 Onsite Buildings Onsite Streets Onsite Parkin Onsite Sidewalks Onsite Other Future Offsite Exlshn Proposed Impervious. Sub ect to 2008/Phil Rule. ft' Drainage Area 273,630 0 0 0 0 0 0 0 0 0 Drainage Area Previousiv Permitted ft2 514,138 0 0 0 0 0 0 01 0 0 Onsite ft' 514,138 Offsite ft2- 0 Drainage Area Not Prev. Permitted (or DA Added), ft' 0 0 0;#DIV/01#DiV/01 0 0 0 0 0 0 Onsite. ft' 0 ' Offsite ft2. 0 Drainage Area ust for Excel If/Then Statements ft2 514.138 0 00 0 0 0 0 0 Is New DA BeingAdded Y or N N Drainage Area Sub ect to Old Rule f[z 0 0 00 0 0 0 0 0 Drainage Area, Subject to New Rule, ft2 514.138 0 00 0 0 0 0 0 Drainage Area,,,,,, Subject to (New+Old) Rule, ft2 514,138 0 00 0 0 0 0 0 Percent Impervious Overall, per DA 53 22% #DIV/OI #DIV/Oi/01 #DIV/01 #DIV/01 #DIV/01 #DIV/01 #DiWOi Volume Required Volume Re uired Old Rule ft' 0 Rvvoslo,,,¢iovmr„t, Old Rule #DIV/01 #DIV/01 #DIV/Oi 1 #DIV/01 #DIV/01 #DIV/0! #DIV/01 #DIV/01 Desi n Storm. Old Rule. in 1 5 Volume Re uired New Rule ft' 33,997RvweDe�emvmvm, New Rule005 0.05 00505 005 005 005 005 005Rvvo,t oiNew Rule 053 0.05 00505 005 005 005 0.05 005 Desi n Storm. 1 5 in 1 5 1 5 1.5.5 1 5 1 5 1 5 1 5 1 5 Design Storm, 1 r24hr. in 380 Subject to SA7 Y 0r N IN Required% ' ft 33.997 0 0 0 0 0 0 0 0 0 Volume Regwredlyrzar„ ft 77,985 0 0 0 0 0 0 0 0 0 Volume Required Total Old+New Rule ft' 33,997 Wet Ponds PROJECT NUMBER: SW8 081114 Reviewer: K Johnson DRAINAGE BASIN: Cape Fear Current Date 23-Dec-10 Original Run Date: 13-Dec-10 DA Number 1 2 1 3 4 5 6 7 8 9 to BMP Type Minimum Surface Area Wet Pond No BMP in DA No BMP in DA NOBMPrn Norf DA DA Fe BMPin DA No BMP rn DA NO BMP in DA NO BMP in DA NO BMP in DA Aimpervious 532% #DIV/01 #DIV/0! #DIV/01 #DIV/Oi #DIV/0I #DIV/Oi #DIV/01 #DIV/01 #DIV/O! Lower Impervious 500% #DIV/01 #DIV/01 #DIV/O' #DIV/01 #DIV/0I #DIV/01 #DIV/01 #DIV/01 #DIV/01 Upper Impervious 600% #DIV/01 #DIV/01 #DIV/01 #DIV/Oi #DIV/01 #DIV/01 #DIV/Oi #DIV/0l# TSS 85 or 90 90 Lower SA/DA 50 #DIV/0I #DIV/01 #DIl #DIV/01 #DIV/Oi #DIV/0l #DIV/01 #DIV/0i #DIVIOi Upper SA/DA 60 #DIV/01 #DIVIOl #DIV/0! #DIV/0l #DIV/0, #DIV/0I #DIV/Oi #DIV/0l #DIV/01 SA/DA ratio 5 3 #DIV/O! #DIV/0I #DIV/01 #DIV/0I #DIVIOI #DIV/01 #DIV/Oi #DIV/0! #DIV/Oi PP Surface Area req, Storage Calculations 27,363 #DIV/01 #DIV/0I #DIV/Oi #DIWO1 #DIV/0I #DIV/01 #DIV/0I #DIV/01 #DIV/0I Elevation, To of Sediment bottom ontl ,fmsl 22.00 Elevation, Bottom of shelf, fmsl 2620, Elevation, Permanent Pool, fmsl 26701 Elevation, To of Shelf. fmsl 27 20 Elevation, TempPool, fmst 28 50 Area, Top of Sediment bottom pond) . ft' 13,495 Area, Bottom of Shelf, ft 31,844 Area, Perm Pool, ft2 36,330 Area, Top of Shelf, h2 41.099 Area, Tem Pool, 49,412 Volume Provided(Temp Pool), DWQ Calculated. ft' 78,190 0 0 0 0 0 0 01 0 0 Volume Provided(Temp Pool), Provided Per Consultant, ft' 79,406 Volume Required(Temp Pool), DWQ Caieul.rad, ft 33,997 Consultant Re oRed Enough Provided Volume9 Y Consultant Provided Enough Volume9 Y Average Depth Option 1 or Option 2 Enter 1 or 2 7 2 Average Depth Provided, ft 3 5 Avera a Depth - OPTION 1 -, DWQ Calculated, ft 3 09 #DIV/01 #DIV/01 #DIV/01 #DIV/01 #DIV/Ot #DIV/OI #DIV/01 #DIVIOI #DIV/011 Average Depth - OPTION 2 -, DWQ Calculated, ft Foreba Volume 3 51 #DIV/O1 #DIwoI #DIV/0I;#VALULI #DIV/Ot #DIVI01 #DIV/Oi #DIV/0I #DIV/01 Permanent Pool Volume, ft' 112,255 0 0 0 0 0 0 0 0 Foreba Volume, Required, ft' 22.451 0 0 0 0 0 0 0 0 Foreba Volume, Provided, ft 23.152 Percent of Permanent Pool 18-22%is Target) 21% #DIV/01 #DIV/01 #DIV/01 #DIV/01 #DIV/Oi #DIV/0� #DIV/01 #DIV/01 Max Pump, hp Drawdown 1/3 NIA N/A N/A N/A N/A N/A N/A N/A Av era a Head, If 0.56 000 000 000 0.00 000 000 000 0 00 Average Flow Qz, ft'/sec 0197 #VALUE' #VALUE' #VALUES #VALUE) #VALUE, #VALUEf #VALUE' #VALUEi Average Flow Qs, ft/sec 0079 #VALUES #VALUE' #VALUEIJ #VALUES #VALUE! #VALUE, #VALUES #VALUE' #VALUE' Qi Area, in 7.874 #VALUE' #VALUEi #VALUE' #VALUE[ #VALUE! #VALUE' #VALUEt #VALUE' #VALUE, Qs Area, m` 3150 #VALUE' #VALUE' #VALUE, #VALUE' #VALUE' #VALUE1 #VALUE] #VALUE' #VALUE' No. of Orifices 1 Orifice Diameter, in 3 00 Orifice Area, m' 7 069 0 000 0 000 0.000 0 000 0 000 0 000 0 000 0 000 0 000 Weir Height, in Weir Length, in. Weir #DIV/01 #DIV/01 #f #DIV/01 #DIV/O! #DIV/01 #DIV/01 #DIV/01 #DIV/01 #DIV/01 Weir L, Effective Len th, ft -0 112 0 000 0 000 0 000 0 000 0.000 0 000 0.000 0 000 0 000 Average Onfice Flowrate Q ft'/sec 0 177 0.000 0 000 0 000 0 000 0 000 0 000 0 000 0 000 0 000 Runoff Coefficient Cc 0.250 0 250 0 250 0 250 0 250 0 250 0 250 0 250 0.250 0 250 7 yr 24 hr rainfall depth, m 3801 1 yr 24 hr Intense in/hr 0 1581 0 000 0 000 0 000 0 000 0 000 0 000 0 000 0.000 0 000 1 yr 24 hr Pre -Development (0). ft'/sec 0 1671 0 000 0000 0000 0 000 0 000 0 000 0 000 0 000 0 000 Av Orifice flow<Pre Q7 OK N N N N N N N N N Drawdown, days. Soils Report Data 2.23 #VALUE! #VALUE! #VALUES #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! Ground Elevation at Boring in Soils Report. fmsf 28 76 Distance Ground to SHWT per Soils Report, in 1900 Distance Ground to SH AT per Soils Report, it 1 58 000 0.00 000 000 0.00 0 00 0001 0001 000 SHWT Elevation. DWQ Calculated, fmsl 27 18 0001 0001 000 000 000 000 000 000 0 00 SHWT Elevation, Reported by Consultant, fmsl 27 18 Distance SHWTtO PP, it Design OK if Or_ Value <= 0 5 048 000 000 000 000 000 0.00 000 000 000 Permanent Pool Elevation, fmsl Pump Max HP 2670 V3 000 N/A 0 00 N/A 0 00 N/A 0 00 N/A 0 00 N/A 000 N/A 000 N/A 000 N/A 0 00 N/A Bottom D TP Wet Pond Use to Find Areas/Volumes if the Engineer Reports the Main Pond and Forebay Separately Basin Forebay Total Contour El (ft) SA (sf) Inc Vol (cf) Cum Vol (cf) Contour El I (ft) SA (sf) Inc Vol (cf) Cum Vol (cf) Contour El (ft) SA (sf) Inc Vol (cf) Cum Vol (cf) 22.0 13,495 0 Om 22.0 13,495 0 0 23.0 15,360 14,428 14,428 23.0 15,360 14,428 14,428 24.0 17,291 16,326 30,753 24.0 6,213 0 0 24.0 23,504 16,326 30,753 25.0 19,2891 18,290 49,043 25.0 7,951 7,082 7,082 25.0 27,2401 25,372 56,125 26.0 21,354 20,322 69,365 26.0 9,715 8,833 15,915 26.0 31,069 29,155 85,280 26.2 21,774 4,313 73,677 26.2 10,070 1,978 17,894 26.2 31,844 6,291 91,571 26.7 25,3661 11,785 85,462 26.7 10,964 5,259 23,152 26.7 36,330 17,044 108,614 27.0 39,370 11,355 119,969 28.0 48,017 43,694 163,663 28.5 49,412 24,357 188,020 Volume Provided: 79,406 (This matches the engineer's number. The other sheet uses my interpolated area at 27.2. Interpolating SA at 27.2: 41,099 Johnson, Kelly From: Garry Pape [gpape@gsp-consulting.com] Sent: Wednesday, December 22, 2010 9:18 AM To: Johnson, Kelly Subject: RE: Community Aquatic Lifestyle Center I'll get you the revised info within an hour I changed the sheet numbers because I made the Site Plan 2 sheets instead of 1 to make things more clear. So I just eliminated Sheet C-3 and turn it into Sheets C-3.1 & C-3.2 and made Sheet C-3 1 Sheet C-3.3. Thanks. - Garry From: Johnson, Kelly [mailto:kelly.p.johnson@ncdenr.gov] Sent: Wednesday, December 22, 2010 8:48 AM To: Garry Pape Subject: FW: Community Aquatic Lifestyle Center Garry, There is one more thing for this permit, but it is a simple fix. The required volume (33,997cf) has to discharge in 2-5days rather than the provided volume (79,406cf). A 3.5" orifice would draw down the provided volume in this timeframe, but the required volume would discharge in only 1.6 days. I attached my calcs on this, and I think that you could use a 2.0- 3.0" pipe and get the required drawdown time. 1.) Please update the necessary items (plan, supplement, calcs, and any other info) where the orifice size effects the data. 2.) Also, I just want to verify the numbers of the pages of the full set of plans. The November set had a sheet C-3. This set has C-1, C-2, C-3.1, C-3.2, C-3.3, C-4, C-5, and C-6 (no sheet C-3). Should I add C-3 from the previous set to this set, or is it no longer necessary? This isn't actually due until 1/13 so I thought I would just send an email rather than a formal letter requesting this change. If I don't receive it by 1/13 1 will send a formal letter. I have already written the permit. I just need to put a date on it when I hear back from you. Thanks, and have a great holiday! Kelly From: Johnson, Kelly Sent: Tuesday, December 14, 2010 3:21 PM To: 'Garry Pape' Subject: RE: Community Aquatic Lifestyle Center Gary, Please submit the hard copy. Thanks, KJ From: Garry Pape [mailto:gpape@gsp-consulting.com] Sent: Tuesday, December 14, 2010 3:18 PM To: Johnson, Kelly Subject: RE: Community Aquatic Lifestyle Center Kelly Thanks for the quick review and comments I will try to get you the revised plans in the next day or so. Do you need a hard copy of the plans or can we just do pdf's right now and once everything is good I'll get you revised prints for your files. Thanks. - Garry From: Johnson, Kelly [mailto:kelly.p.johnson@ncdenr.gov] Sent: Monday, December 13, 2010 2:56 PM To: Garry Pape Subject: FW: Community Aquatic Lifestyle Center Garry, Please see the attached add info which will be mailed today. It is all pretty easy. KJ From: Garry Pape [mailto:gpape@gsp-consulting.com] Sent: Friday, -November 19, 2010 2:52 PM To: Johnson, Kelly Subject: RE: Community Aquatic Lifestyle Center Here is the plan sheet I forgot to attach to the last e-mail From: Johnson, Kelly [mailto:kelly.p.johnson@ncdenr.gov] Sent: Friday, November 19, 2010 9:12 AM To: Garry Pape Subject: Community Aquatic Lifestyle Center Garry, We received this application, and I went through it this morning. I have a few questions for you: 1.) Project Area: The site is currently permitted to 28.55ac all treated by a single pond. It appears that you intend to still cover the entire 28.55ac project under this permit number, but instead of having the whole thing drain to a single pond you want to have only 11.8acres (514,138sf) of the site drain to the pond. Is that correct? If that is the case, then the property area on the application (Section IV, 4) should be 28.55ac. If this is correct I will make and initial the change to the application if you authorize me to do so. Otherwise, you would have to get a separate permit for the area in excess of 11.8ac. 2.) Deed Restrictions: It also looks like you intend to subdivide two outparcels in the 11.80ac that will drain to the pond because you have submitted deed restrictions for those two parcels. The remaining area that does not drain to the pond is shown to be Parcel B which is 11.78ac. a. Totaling 28.55ac: If the area that will drain to the pond is 11.78ac and Parcel B is 11.80ac where is the remaining 4.97acres? Is there another parcel on this site that covers 4.97acres? Sheet C-3 shows distance and bearing lines for some of the project boundaries, but the western edge is not labeled. Please show the entire area to be permitted (28.55ac) either on Sheet C-3 or as a matchline from that sheet to another sheet. b. Deed Restrictions: It appears that you will require Parcel B (and the remaining 4.97ac) to provide individual BMPs. If that is the case, then you still need deed restrictions for that land. It is not our standard deed restrictions because the impervious is not yet known. But, I have attached example deed restrictions for you to use. They have to be signed and notarized just as our typical deed restrictions which are available on our website, http://portal.ncdenr.org/web/wq/ws/su/statesw/forms docs#tab- 4. Please submit deed restrictions for this land. 3.) Plans: Please review the design checklist available on our website, httl2://portal.ncdenr.org/web/wq/ws/su/statesw/forms docs#tab-4. See pages 4-6. This checklist shows the items that we will look for during the review. There area few items that I noticed are not on the plan. For instance, you may want to go ahead and add the dimensions of each line and arc formed by the permanent pool, a detail of the sidewalk which shows its width, and the dimensions of all impervious area on the plan. I didn't go through the entire list, these are just items I noticed off -hand. But, the review engineer who eventually gets assigned to this project will send an add info letter for any of the items on the list that are not on the plan/in the package. I generally go through each package when it comes in and ask that any items that need to be resolved (such as Items 1&2 above) be resolved by COB the next business day or I have to return the package because I cannot hold packages with uncashed checked for too long. But, since this is Friday before Thanksgiving that may not be feasible. So, please return this package as soon as you can. If I don't hear back from you pretty soon I will try to get up with you and we will work out some sort of deadline. Thanks, KJ *** My email has changed to kellv.o.iohnsonCeDncdenr.gov K,eL LL Ji0kVUSOVL Kelly Johnson Environmental Engineer Division of Water Quality Stormwater Permitting 127 Cardinal Drive Extension Wilmington, NC 28405-3845 Office: 910.796.7331 Fax: 910.350.2004 E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to third parties. GSP CONSULTING 6626 Gordon Road, Unit C WILMINGTON, NORTH CAROLINA, 28411 (910) 442-7870 FAX (910) 799-6659 To: Kelly Johnson NC Division of Water Quality 127 Cardinal Drive Ext. Wilmington, NC 28405 WE ARE SENDING YOU ❑ Fee Check ❑ Copy of Letter LETTER 0 F'RE A HAT' DATE 12/22/10 JOB NO. 2010-000 ATTENnON Kell Johnson PHONE# RE: Community Aquatic Lifestyle Center SW8 o8111 ❑ Attached ❑ Under separate covervia ❑ Permit Applications ® Plans ® Calculations ® Comment/Response Letter ❑ the following items: ® Supplements COPIES DESCRIPTION 2 Revised Plan Sheet C-6 1 Revised Wet Detention Basin Supplement 1 Revised Drawdown and pond routing calculations 0 By. 2 2 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: COPYTO: File ❑ Resubmit copies for approval ❑ Submit copies for distribution ❑ Return corrected prints SIGNED: - Garry S. PaDe. P.E. IF enclosures are not as noted, kindly notify as at once. GSP CONSULTING 6626 Gordon Road, Unit C WILMINGTON, NORTH CAROLINA, 28411 (910) 442-7870 FAX (910) 799-6659 To: Kelly Johnson NC Division of Water Quality 127 Cardinal Drive Ext. Wilmington, NC 284o5 WE ARE SENDING YOU ❑ Fee Check ❑ Copy of Letter RECD DEC 17 2010 LETTER OF TRANSMYTAL DATE 12/1 /10 JOB NO. 2010-000 1 AUENTION Kell Johnson PHONE# RE: Community Aquatic Lifestyle Center SW8 o8111 ❑ Attached ❑ Under separate covervia ❑ Permit Applications ® Plans ® Calculations ® Comment/Response Letter ❑ the following items: ® Supplements COPIES DESCRIPTION 2 Revised Community Aquatic Lifestyle Center Plans 1 Revised Wet Detention Basin Supplement 1 Revised Drawdown and Infiltration area calculations 1 Comment/Response Letter THESE ARE TRANSMITTED as checked below: ® For approval ❑ Approved as submitted ❑ Foryour use ❑ Approved as noted ❑ As requested ❑ Returned for corrections ❑ For review and comment ❑ ❑ FOR BIDS DUE ❑ PRINTS RETURNED AFTER LOAN TO US REMARKS: ❑ Resubmit copies for approval ❑ Submit copies for distribution ❑ Return corrected prints COPYTO: Jile SIGNED: - Garry S. Pape, P.E. if enclosures are not as noted, kindly notify us at once. GSP CONSULTING December 17, 2010 RECEIVED NCDENR DEC 17 2010 Division of Water Quality 127 Cardinal Drive Extension BY: Wilmington, NC 28405 Re: Request for Additional Information Hampstead Lifestyle Center SW8 081114 We have received your request for additional information, dated December 13, 2010. 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. Drawdown: a. Drawdown time: Please checkyour drawdown calculation to ensure that it is done as shown in the example in Section 3.5.2 of the BMP M Manual and draws down in 2-5 days. Please also ensure that the vz� diameter in calculations match the supplement and plans. Response: The drawdown calculations are done based on the formula of Orifice Equation as shown in Section 3.5.2. The drawdown calculation is attached as well as the revised Wet Detention Basin Supplement and both the calculation, supplement and plans signify a 3.5" orifice. b. Discharge Rate: Please provide calculations showing that the discharge rate (orifice,flow rate) is less than the pre -development discharge rate.for the lyr24hr storm. Response: The drawdown calculations show the discharge from the pond to the infiltration area to be 0.249 cfs and the infiltration rate of the infiltration area is 0.258 cfs as shown on the attached calculations sheet which is greater than the pond drawdown into the infiltration area signifying that the 1-year 24-hour storm volume will infiltrate into the ground and not leave the site. Plans: a. Elevations: It appears that the pond will be excavated to elevation 21.0, and the sediment will be removed when it reaches 22.0. Please show elevation 2 1. 0 on the cross-section on sheet C-5. Response: Elevation 21.0 has been shown on the pond cross section on Sheet C-6. b. Drainage Easement: Please show its location and dimensions on the plans. 6626 Gordon Road, Unit C Wilmington, North Carolina 28411 tel: 910-442-7870 fax: gio-799-6659 1 GSP CONSULTING Response: The drainage easement has been dimension and shown on Sheet C-6. C. Wetlands: Please either delineate wetlands on the plans or include a note that none exist onsite. Response: Note 6 on the Cover Sheet denotes that no wetlands exist on site. d Details: Please provide details for the roads, parking and sidewalks showing width, radii, dimensions, and slopes. Response: The road detail has been shown on Sheet C-3.1 and width, radii & dimensions for the road, parking area and sidewalks have been shown on Sheets C-3.1 & C-3.2 and the slopes are shown on Sheet C-4. e. Forebay berm: Please show the elevation of the berm separating the .forebay_from the main pond. Response: The elevations of the forebay berm of 27.2 have been shown on Sheets C-4 & C-6. f Permanent Pool: Please show the dimensions of each line and arc formed by the permanent pool. Response: The permanent pool dimensions of the lines and arcs have been shown on Sheet C-3.2. 3. 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: Comment noted. I trust the responses to the comments will adequately address your concerns. Please contact me immediately at (910) 442-7870 or gpapeOgsn-consulting com if you have any questions or require additional information. Sincerely, GSP CO SULTING, PLLC. Garry S. Pa 6626 Gordon Road, Unit C Wilmington, North Carolina 28411 tel: 910-442-7870 fax: 910-799-6659 IWA �6 NC®ENR North Carolina Department of Environment and Natural Resources Beverly Eaves Perdue Governor December 13, 2010 Mr. Jeff Beaudoin, Owner. Hampstead Lifestyle Center PO Box 538 Hampstead, NC 28443 Division of Water Quality Colleen H. Sullins Director Subject: Request for Additional Information Stormwater Project No. SW8 081114 Hampstead Lifestyle Center Pender County Dear Mr. Beaudoin: Dee Freeman Secretary The Wilmington Regional Office received and accepted a modified State Stormwater Management Permit Application for the subject project on November 22, 2010. A preliminary in-depth review of that information has determined that the application is not complete. The following information is needed to continue the stormwater review: Drawdown: a. Drawdown time: Please check your drawdown calculation to ensure that it is done as shown in the example in Section 3.5.2 of the BMP Manual and draws down in 2-5 days. Please also ensure that the diameter in calculations match the supplement and plans. b. Discharge Rate: Please provide calculations showing that the discharge rate (orifice flow rate) is less than the pre -development discharge rate for the 1 yr24hr storm. _ 2. Plans: a. Elevations: It appears that the pond will be excavated to elevation 21.0, and the sediment will be removed when it reaches 22.0. Please show elevation 21.0 on the cross-section on sheet C-5. b. Drainage Easement: Please show its location and dimensions on the plans. c. Wetlands: Please either delineate wetlands on the plans or include a note that none exist onsite. d. Details: Please provide details for the roads, parking and sidewalks —showing width, radii, dimensions, and slopes. e. Forebay berm: Please show the elevation of the berm separating the forebay from the main pond. f. Permanent Pool: Please show the dimensions of each line and arc formed by the permanent pool. 3. 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. Wilmington Regional Office 127 Cardinal Drive Extension, Wilmington, North Carolina 28405 One Phone: 910.796.72151 FAX. 910-350-2004 1 Customer Service: 1-877-623-6748 NorthCaroli na Internet*w .ncwaterquallty.org Nahtnrlly An Equal Opportunity 1 Affirmative Action Employer SW8 081114. December 13, 2010 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 January 13, 2011, 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 kelly.p.johnson@ncdenr.gov. neer GDS/kpj: S:\WQS\STORMWATER\ADDINFO\2010\081114.dec10 cc: Garry Pape, PE Wilmington Regional Office Stormwater File Page 2 of Johnson, Kelly From: Johnson, Kelly Sent: Monday, November 22, 2010 7:45 AM To: 'Garry Pape' Subject: RE: Community Aquatic Lifestyle Center Gary, We will permit it as a high density subdivision and will create some text for the permit to clarify the scenario of Parcels B & C having to get their own permits later. Please submit a master plan showing the entire 28.55 ac tract showing bearing/distance lines of all property lines including the entire outline of Parcels B&C. Please also show the area of Parcels B & C on the plan. I recommend showing it in square feet rather than acres. Please also submit the deed restrictions that we discussed previously, and update the paperwork to show that the 28.55ac tract will be permitted. Thanks, KJ - From: Garry Pape [mailto:gpape@gsp-consulting.com] Sent: Friday, November 19, 2010 2:52 PM To: Johnson, Kelly Subject: RE: Community Aquatic Lifestyle Center Kelly, The original permit was for the entire 28.55 acres. What we are trying to do is get a new permit that will be only for the first 11.8 acres. The other 16.78 acres (Parcels B & C as shown on attached Overall Sire Plan) will be required to obtain individual stormwater permits. What do you need me to do? Can I just submit this extra sheet showing the entire parcel noting that Parcels B & C will be required to obtain individual stormwater permits and get you a signed copy of the individual lot systems deed restrictions? Thanks. - Garry From: Johnson, Kelly [mailto:kelly.p.johnson@ncdenr.gov] Sent: Friday, November 19, 2010 9:12 AM To: Garry Pape Subject: Community Aquatic Lifestyle Center Garry, We received this application, and I went through it this morning. I have a few questions for you: 1.) Project Area: The site is currently permitted to 28.55ac all treated by a single pond. It appears that you intend to still cover the entire 28.55ac project under this permit number, but instead of having the whole thing drain to a single pond you want to have only 11.8acres (514,138sf) of the site drain to the pond. Is that correct? If that is the case, then the property area on the application (Section IV, 4) should be 28.55ac. If this is correct I will make and initial the change to the application if you authorize me to do so. Otherwise, you would have to get a separate permit for the area in excess of 11.8ac. 2.) Deed Restrictions: It also looks like you intend to subdivide two outparcels in the 11.80ac that will drain to the pond because you have submitted deed restrictions for those two parcels. The remaining area that does not drain to the pond is shown to be Parcel B which is 11.78ac. a. Totaling 28.55ac: If the area that will drain to the pond is 11.78ac and Parcel B is 11.80ac where is the remaining 4.97acres? Is there another parcel on this site that covers 4.97acres? Sheet C-3 shows distance and bearing lines for some of the project boundaries, but the western edge is not labeled. Please show the entire area to be permitted (28.55ac) either on Sheet C-3 or as a matchline from that sheet to another sheet. 1 � J b. Deed Restrictions: It appears that you will require Parcel B (and the remaining 4.97ac) to provide individual BMPs. If that is the case, then you still need deed restrictions for that land. It is not our standard deed restrictions because the impervious is not yet known. But, I have attached example deed restrictions for you to use. They have to be signed and notarized just as our typical deed restrictions which are available on our website, http://portal.ncdenr.org/web/wq/ws/su/statesw/forms docs#tab- 4. Please submit deed restrictions for this land. 3.) Plans: Please review the design checklist available on our website, http://Portal.ncdenr.org/web/wq/ws/su/statesw/forms docs#tab-4. See pages 4-6. This checklist shows the items that we will look for during the review. There are a few items that I noticed are not on the plan. For instance, you may want to go ahead and add the dimensions of each line and arc formed by the permanent pool, a detail of the sidewalk which shows its width, and the dimensions of all impervious area on the plan. I didn't go through the entire list, these are just items I noticed off -hand. But, the review engineer who eventually gets assigned to this project will send an add info letter for any of the items on the list that are not on the plan/in the package. I generally go through each package when it comes in and ask that any items that need to be resolved (such as Items 1&2 above) be resolved by COB the next business day or I have to return the package because I cannot hold packages with uncashed checked for too long. But, since this is Friday before Thanksgiving that may not be feasible. So, please return this package as soon as you can. If I don't hear back from you pretty soon I will try to get up with you and we will work out some sort of deadline. Thanks, KJ *** My email has changed to kellv.p.iohnsonCaDncdenr.aov K.BI.I.I� Dh InSD Vt. Kelly Johnson Environmental Engineer Division of Water Quality Stormwater Permitting 127 Cardinal Drive Extension Wilmington, NC 28405-3845 Office: 910.796.7331 Fax: 916.350.2004 E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to third parties. GSP CONSULTING 6626 Gordon Road, Unit C WILMINGTON, NORTH CAROLINA, 28411 (910) 442-7870 FAX (910) 799-6659 To: Kelly Johnson NC Division of Water Quality 127 Cardinal Drive Ext. Wilmington, NC 284o5 WE ARE SENDING YOU ® Fee Check ❑ Copy of Letter RECO Nov 2 2 2010 LETTER OF TRANSNUAL DATE 11/22/10 JOB NO. 2010-000 1 ATrENnON Kell Johnson PHONE# RE: Community Aquatic Lifestyle Center Stormwater permit (Conventional) ❑ Attached ❑ Under separate covervia ® Permit Applications ® Plans ® Calculations ❑ Change order ❑ Diskette ❑ the following items: ❑ Specifications COPIES DESCRIPTION 2 Copies of Overall Site plan 1 Page 3 of the Stormwater Management Permit Application 1 Individual Lot Systems Deed Restrictions 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: COPY TO: ❑ Resubmit ❑ Submit ❑ Return _ SIGNED: copies for approval copies for distribution corrected prints - Garry S. Paoe. P.E. if enclosures are not as noted, kindly notify us at once. Project Name: 6 Proiect Received Date received: ' ✓'= Yes/OK: ' x'= Rule(s) Subject (check all that apply): ❑ 1995 Coastal 12'�2008 Coastal ❑ Phase II ❑ Universal Papeerww rk: LE �Gheck for $505 (must be no older than 6 months) y' Application form with correc/original signatures (original plus 1 copy). If Corporation or LLC also: o Print the info from the NCSOS 1L\0 Either, 1.) The applicant is listed on the NCSOS with his/her correct title or, 2.) A notarized letter,of authorization has been provided: q w r %� l�Supplements (1 original per BMP). BMP type(s). 9A .�•. /U �F5 ��l 3yFl� tom wit 1 c mt�' f�0&M with correct/original signatures (1 original per BMP, except level spreaders/filter strips and swales) �ACk 0?06 1ML— p ❑ Deed restrictions (if outparcel or subdividing) (original plus 1 copy) UN tie o Deed restriction template (signed and notarized) or o Proposed'Declaration of Covenants and Restrictions (signed and notarized) J`C.�ci08dll, ils report identifying the SHWT (U51ol�j Sc)AV pP& as 0„QQ£," pVxmr{� (Pb")i> f�p GYSupporting calculations, signed & sealed (T necessary) IN U,4eceiving stream classification: lj If SA or ORW also%MSiLL' �3 m�(ij { G ctegf, ne a12E o SA: USGS topo map with the site, the receiving waters and the ''% mile radius shown to sc e. o .ORW: 575 ft of MHWL for Area of Environmental Concern and max BUA per rule. ,dlModifications: 1.) If built: Designer's Cert., 2.) If partially built. Partial Ce , 3.) f not built: No Cert. needed. Development Type (check all that apply): ❑ Residential or O'Commercial ❑ Deed restrictions match? Ud Subdivision or ❑ Single Lot ❑ Deed restrictions match? 3"High Density or ❑ Low Density ❑ Deed restrictions match? ❑ Offsite project ❑ Redevelopment Clk`�Modification bSioL{ ❑ Exempt Wo. ❑ NCG02 (bulkhead) ❑ NCG03 (clear/grade) ❑ NCG04 (linear) Density* ' i%6A calculations include common areas, clubhouse, sidewalks, etc. IBUA %: 0 �t 6aJ, Matches high/low density requirement for rule and receiving stream class. (_ ,No obvious math errors Iy If High Density: Design storm correct for rule and receiving stream class Plan�s,�ned and sealed (2 sets): ' LN Two sets received / ❑ .,ayout (with proposed BUA dimensions) ❑,Grading ✓� LX Drainage area map (all HD systems & curb outlet swales) CY'inity map*'—iU Project Boundaries ❑ Legend rY Wetlands: o Delineated on plans "No wetlands onsite" on plans ❑ Details: ,D o Roads o Cul-de-sacs o Curbing o Sidewalk C� o BMPs/ Level spreaders/ Filter strips/ Curb outlet swales o Buildings (Apts or Condos) Offsite Projects: ❑ Desi er's Certification has been submitted for the Offsite BMP receiving the runoff from the project. ❑ ed restrictions have been recorded and a copy submitted for the Offsite BMP permit. Lot size has not changed from what was approved under the Master Plan ❑ Correct lot number is referenced on the supplement form. ❑❑ite system is in compliance with its permit, if known. Infiltr n Projects: Z❑ Soils report: SHWT, soil type, and expected infiltration rate are provided. ❑ DWO has conducted a site visit? Date: Wet Pond Permanent Pool Meets One of the Following: C`Y Is located no lower than 6" below the estimated SHWT. ✓ ❑ Incoming groundwater is quantified and evaluated, AND Storage volume verified, AND Outlet evaluated for free drainage to the receiving waters under SHWT conditions Decision (check one): ❑ Complete: Return file to admin (Jo Casmer) to log in. (Stamped in received date = BIMS date) ❑ Slightly incomplete: E-mail consultant, request information to be returned within one business day (24 hours after request. Info requests on Friday, allow a return on the following business day). If info not returned, issue an application return letter and give everything to admin. (Add info received date = BIMS date) 0 Substantially incomplete: Issue an application return letter and give everything to admin. f`(trl'IEP 5�� say, 9' 2 I)� G-1�Qal 5114. 13-0 7 Iq, s rrw4 �S�s� . �� G7H�NK sad i ku- - • ya � �� dYv rJ �iYl P G}v �tn � � i ON,n 15)10 dv, L ,I , z5c- V�-(g Wl I I 6� cvlvn (.),p rrn / %_ GSP CONSULTING TO: 6626 Gordon Road, Unit C WILMINGTON, NORTH CAROLINA, 28411 (910) 442-7870 FAX (9io) 799-6659 NC Division of Water Quality 127 Cardinal Drive Ext. Wilmington, NC 284os WE ARE SENDING YOU ® Fee Check ❑ Copy of Letter REC'D NOV 18 2010 LQ OF Y° ° NSMITTQL DATE 11/18/10 JOB NO. 2010-000 ATTENTION PHONE # RE: Community Aquatic Lifestyle Center Stormwater permit (Conventional) ❑Attached ❑Underseparatecovervia ® Permit Applications ® Plans ® Calculations ❑ Change order ❑ Diskette ❑ the following items: ❑ Specifications COPIES DESCRIPTION 2 Sets of plans & calculations for state stormwater permit 2 Stormwater Management Permit Application Forms (one original, one copy) 1 Wet Detention Basin Supplement & Checklist 1 Wet Detention Basin Operation and Maintenance Agreement 1 High Density Commercial Development Deed Restrictions & Covenants 1 Application fee for $505.00 for conventional review 1 Property Deed & USGS Map 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 ❑ ❑ Resubmit copies for approval ❑ Submit copies for distribution ❑ Return corrected prints ❑ FOR BIDS DUE ❑ PRINTS RETURNED AFTER LOAN TO US REMARKS: COPYTO: File - Garry S. PaDe. P.E. /fenclosures are not as noted, kindly notify as at once. plied l�e5vurce Management, f'.C. 7 November 2008 Jeff Beaudoin `'! V PO Box 538 Hampstead, NC 28443 ?010 Re: Storm Water Evaluation Transfer Station Road, Hampstead, NC Mr. Beaudoin, Please find below a report referencing a soil and site evaluation for the above referenced site, located near Transfer Station Road, Hampstead, North Carolina. 1.O Introduction/Purpose The purpose.of the soil and site evaluation was to determine the seasonal high water table within the proposed pond location and to obtain hydraulic conductivity readings for the proposed area. 2.0 Methods (Refer to Figure 1) The site was evaluated using hand auger borings. Auger borings were made at varying locations throughout the proposed pond area to a depth of at least 48 inches and profile descriptions recorded. The seasonal high water table was determined by the indication of redoximorphic features and/or colors of chroma 2 or less (Munsell Color Book) at >2% of the soil volume in mottles or matrix of a horizon or horizon subdivision. The saturated hydraulic conductivity (K.,) of the unsaturated portion of the soil profile was measured using a Compact Constant Head Permeameter (CCHP): These in situ measurements of saturated hydraulic conductivity were obtained in accordance with the Compact Constant Head Permeameter User's Manual by Ka„ Inc. Field work was•conducted at the site on October 6, 2008 - October 24, 2008. 7 November 2008 3.0 Results/Findings (Refer to Appendix A and Figure 1) The area for the pond was characterized by soils with a seasonal high water table that ranged from less than 12 inches from the natural soil surface to a depth of 19 inches from the natural soil "surface as indicated by the presence of redoximorphic features and/or colors of chroma 2 or less (Munsell Color Book) at >2% of the soil volume in mottles or matrix of a horizon or horizon subdivision. The seasonal high water table at soil boring one (SB1) was noted to be 19 inches from natural soil surface. ,The seasonal high water table at soil boring two (SB2) was noted to be <12" from the natural soil surface. The in -situ saturated hydraulic conductivity (Ksat) measurement at soil boring two (SB2) was noted to be 2,23 inches per hour at the most limiting soil horizon in the unsaturated portion of the soil profile. A detailed profile description and data sheet for each boring location is in Appendix A. 4.0 Limitations The areas analyzed as part of this investigation only provide isolated data sets and points and do not represent, subsurface conditions at every location in the project area. The data contained in this report is that -which was specifically requested by Withers and Ravenel and may riot be inclusive of all field data collected. Analyses and conclusions of this report, interpretation between data points, and subjective subsurface interpretation, may not be completely representative of all subsurface conditions. This investigation, furthermore does not provide conclusive data on limits of impact or other interpolations where indicated by question marks. or where otherwise qualified. Conclusions and recommendations 'ofthis investigation and report are based on the best available data in an effort to assist in the understanding, control and/or site planning and preparation. No guarantee is expressed or implied that new or additional data and/or scientific measures will not be required for ultimate solution of the existing project. 7 November 2008 Should you have any questions or concerns please do not hesitate to contact me at (910)270-2919. Sincerely, e S Gene Yduppg, R Environm�`ntal cien'tist" 0.2"n% I L- S! Walter D. Giese, LSS, IRS Soil Scientist 3 7 Naue,.,e,/, �Oo8 Jeff Beaudoin Stormwater Soil Boring Profile Descriptions Transfer Station RD, Hampstead, North Carolina October 24, 2008 Logged By: Gene Young, IRS Page 1 of 1 SB1 Soil Description 0 - 10 inches Dark gray (10YR 4/1) loamy sand, crumb, very friable, non - expansive. 10 - 12 inches Black (10YR 2/1) sandy loam, sub -angular blocky, friable, slightly expansive. 12 - 15 inches Very dark brown (10YR 2/2) loamy sand, granular, firm, non - expansive, cemented. 15 - 19 inches Brown (10YR 4/3) loamy sand, crumb, very friable, non -expansive. 19 - 34 inches Brown (10YR 4/3) loamy sand, crumb, very friable, non - expansive, with very dark brown (10YR 3/2) and grayish brown (10YR 5/2) mottles. 34 - 44 inches Light brownish gray (2.5Y 6/2) loamy sand, granular, very friable, non -expansive with brownish yellow (10YR 6/8) mottles and sandy loam lenses. 44 - 48 inches Black (2.5Y 2.5/1) sandy loam, sub -angular blocky, friable, slighty expansive. Seasonal High Water Table 19" Jeff Beaudoin Stormwater Soil Boring Profile Descriptions Transfer Station RD, Hampstead, North Carolina October 24, 2008 Logged By: Gene Young, IRS Page 1 of 3 SB 2 Soil Description 0 - 34 inches Black (10YR 2/1) sandy loam, sub -angular blocky, friable, slightly expansive. 34 - 40 inches Very dark gray (10YR 3/1) sandy loam, sub -angular blocky, friable, slightly expansive. 40 - 48 inches Very dark gray (2.5Y 3/1) loamy sand, sub -angular blocky, friable, non -expansive. 48 - 60 inches Black (10YR 2/1) sandy loam, sub -angular blocky friable, slightly expansive. Seasonal High Water Table <12" Jeff Beaudoin Stormwater Infiltration Study Test Site: SB 2/ CCHP 2 Page 2 of 3 Soil notes: Location (cm) Hole Depth 46 water H 15 Reference 10 d 41 D 56 HI 41 DTW (cm) Time Valve A Conver. Test 9:II Start: Initial: 41 On cm^-2) Factor 2 0.001056 105 Final: 41 Test 9:57 Time dt Res dR DTW H Conver. Q K K K Loading (min) (min) (cm) (cm) (cm) (cm) Factor (cm^3/hr) (cm/hr) (in/hr) (in/wk) (gpd/ft'") 0:00:00 0 46.5 0 41 15 105 0:02:00 2 44 2.5 41 15 105 7875 8.3160 3.274 550.035 ' 0:04:00 2 42.1 1.9 41 15 105 5985 6.3202 2.488 418.026 0:06:00 1 2 40.4 1.7 41 15 105 1 5355 5.6549 2.226 374.024 0:08:00 2 38.7 1.7 41 15 105 5355 5.6549 2.226 374.024 0:10:00 2 37 1.7 41 15 105 5355 5.6549 2.226 374.024 0:12:00 2 35.3 1.7 41 15 105 5355 5.6549 2.226 374.024 0:14:00 2 33.6 1.7 41 15 105 5355 5.6549 2.226 374.024 0:16:00 2 31.8 1.8 41 15 105 5670 5.9875 2.357 396.025 0:18:00 2 30.1 1.7 41 15 105 5355 5.6549 2.226 374.024 0:20:00 2 28.4 1.7 41 15 105 5355 5.6549 2.226 374.024 0:22:00 2 26.8 1.6 41 15 105 5040 5.3222 2.095 352.022 0:24:00 2 25 1.8 41 15 105 5670 5.9875 2.357 396.025 0:26:00 2 23.3 1.7 41 15 105 5355 5.6549 2.226 374.024 0:28:00 2 21.7 1.6 41 15 105 5040 5.3222 2.095 352.022 0:30:00 2 19.9 1.8 41 15 105 5670 5.9875 2.357 1 396.025 0:32:00 2 18.3 1.6 41 15 105 1 5040 5.3222 2.095 1 352.022 0:34:00 1 2 16.7 1.6 41 15 .105 1 5040 5.3222 2.095 1 352.022 SB 4/ CCHP 4 Page 3 of 3 0:36:00 2 15 1.7 41 15 105 5355 5.6549 2.226 374.024 0:38:00 2 13.3 1.7 41 15 105 5355 5.6549 2.226 374.024 0:40:00 2 11.6 1.7 41 15 105 5355 5.6549 2.226 374.024 0:42:00 2 9.9 1.7 41 15 105 5355 5.6549 2.226 374.024 0:44:00 2 8.2 1.7 41 15 105 5355 5.6549 2.226 374.024 0:46:00 2 6.5 1.7 41 15 105 5355 5.6549 2.226 374.024 K,�, 5.6549 1 2.226 374.024 33.306 i d'' 7 November 2008 pplied Resource Management, P. C. P.O. Box 882, Hampstead, NC 28443 (910) 270-2919 FAX 270-2988 Soil Boring # 1 ® �\ Soil Boring # 2 ® i Map atlapted Isom prevx s devgn map by Wth&s and Ra+enN TITLE: Jeff Beaudoin FIGURE: Storm Water Soil Boring Locations OB: SCALE: DATE: DRAWN BY: 08166 1 "= 300' 1 1 /7/08 1 GY PENUEN COUNTY NC 09/161noe $456.00 ,.n°r1H Real p GEstate P�IOUHF E,,j liS�'�/ xclse Tex F11_ED G8 SEP ) 6 PH 2: 11 I `M.SYiICFGf,Git SCG!STC? Cr nrE'JS dlil i Y. HC PIN 0 (1a03 - 3(e-11 olio oo00 -0 urr_-J_U_ 811(3523fG295 NORTH CAROLINA GENERAL WARRANTY DEED F..: PC.11:% l..u::.1y, Pit) STATE OF NORTH CAROLINA 113x reel No. 1126-0000 COUNTY OF PENDER ° e X $456.00 This instrument was prepared bT*. James Brandon The attorney preparing this instrument has made no record search or title examination as to the property herein described, unless the same is shown by his written and signed certificate. Further no tax advice of any nature has been rendered to the parties to this instrument. Brief description for the index: 28.552 Acres THIS DEED, made this loth day of September, 2008 by and between, JEFPREY J. BEAUDOIN, separated, (hereinafter called "Grantor"); and WILLIAM A. GARRICH whose mailing address is 115B Parmele Blvd., Wrightsville Beach, North Carolina 28480 (hereinafter called "Grantee"). The designation Grantor and Grantee as used herein shall include said parties, their heirs, successors and assigns, and shall include singular, plural, masculine, feminine or neuter as required by context. THAT WHEREAS, the said Grantor for a valuable consideration paid by the Grantee, receipt of which is hereby acknowledged, has bargained and sold, and by these presents does hereby grant, bargain, sell and convey unto the said Grantee in fee simple, a fifty (50%) percent undivided interest in the following described lot or parcel of land located in Topsail Township, Pender County, North Carolina: q RECEIVED NOV 18 2010 BY: Mi3523PG296 Being a fifty (50$) undivided interest in that certain 28.552 Acre Tract of land more particularly described on the attached Exhibit,A which is incorporated by reference as if fully set forth herein. The property hereinabove described was acquired by Grantor by instrument recorded in Book _ at Page of the Pander County Registry. TO HAVE AND To HOLD said fifty (501) percent undivided interest in the aforesaid lot or parcel of land and all privileges and appurtenances thereto belonging to the Grantee in fee simple. And the Grantor covenants with the Grantee, that Grantor is seized of the premises in fee simple, has the right to convey the said fifty (50%) percent undivided interest in fee simple, that title is marketable and free and clear of all encumbrances, and that Grantor will WARRANT and DEFEND the title against the lawful claims and demands of any and all persons whomsoever except for the exceptions hereinafter stated. Title to the property hereinabove described is subject to the following exceptions: 1. Ad valorem taxes for 2008 and subsequent years. 2. General utility service easements and rights of way of record. 3. Matters shown on maps recorded in the Pender county Registry. 4. Restrictions of record in the Pander County Registry. 5. Applicable local, county, state or federal government laws or regulations relative to environment, zoning, subdivision, occupancy, use or construction of the subject property. [Remainder of this Page intentionally left blank] 00523PG297 IN WITNESS WHEREOF, the Grantor has hereunto set his hand and seal, the day and year first abb�ove/ written/��/ / K/f2N/ i�}fA•�/ u^ (SEAL) !�6jrfrdyBeaudoin (SEAL) General Warranty Deed dated September 10, 2008; 28.552 Acres STATE OF NORTH CAROLINA COUNTY OF FENDER I certify that the following person(s), known to me or proved to me on the basis of satisfactory evidence to be the person(s) described, personally appeared before me this day, each acknowledging to me that he or she voluntarily signed the foregoing document for the purposes stated therein and in the capacity indicated: Jeffrey J. Beaudoin I Date: s i..A _, 2008. ` � (SAnature of Notary) (Notary Stamp or Seal) Notary Public Printed or typed name 1 My commission expires: � 2oIJ7 V40TW4 FOLIO NK352.3PG298 EXHIBIT A LOCATED IN TOPSAIL TOWNSHIP, PENDER COUNTY, NORTH CAROLINA, AND BEING DESCRIBED AS FOLLOWS: BEGINNING AT AN IRON PBPE IN THE NORTHERN LINE OF THE FORMERLY R. E. HUGHES TRACT OF LAND, AS SHOWN ON THE MAP OF THE DIVISION OF LAND FOR GLEN DELL DEVELOPMENT COMPANY, AS PREPARED BY JOHN A. BENSON, REGISTERED LAND SURVEYOR; DATED JUNE 1976, SAID PIPE BEING LOCATED NORTH 34 DEGREES 09 MINUTES WEST 235.49 FEET FROM AN OLD IRON ROD IN THE CENTERLINE OF S.R. #1565, SAID ROD BEING LOCATED NORTH 43 DEGREES 27 MINUTES 30 SECONDS EAST 199.85 FEET FROM A CONCRETE CULVERT UNDER SAID S.R. #1565, SAID CULVERT IN TURN BEING 0.45 MILES NORTHWARDLY FROM THE INTERSECTION OF SAID S.R. #1565 WITH S.R. #1567; RUNNING THENCE FROM SAID BEGINNING POINT, PARALLEL TO, AND 230.0 FEET WESTWARDLY FROM THE CENTERLINE OF THE AFOREMENTIONED S.R. #1565, SOUTH 43 DEGREES 27 MINUTES 30 SECONDS WEST 575.89 FEET TO AN IRON PIPE; RUNNING THENCE AT RIGHT ANGLES, SOUTH 46 DEGREES 32 MINUTES 30 SECONDS EAST 200.00 FEET TO AN IRON PIPE IN THE WESTERN RIGHT OF WAY LINE OF S.R. #1565; RUNNING THENCE WITH SAID RIGHT OF WAY SOUTH 43 DEGREES 27 MINUTES 30 SECONDS WEST 30.0 FEET TO AN IRON PIPE; RUNNING THENCE AT RIGHT ANGLES NORTH 46 DEGREES 32 MINUTES 30 SECONDS WEST 324.82 FEET TO AN IRON PIPE; RUNNING THENCE NORTH 34 DEGREES 55 MINUTES 30 SECONDS WEST 1,900.1 FEET TO AN IRON PIPE; RUNNING THENCE NORTH 55 DEGREES 05 MINUTES EAST 644.4 FEET TO AN. IRON PIPE IN THE NORTHERN LINE OF THE AFOREMENTIONED GLEN DELL DEVELOPMENT COMPANY'S TRACT OF LAND; RUNNING THENCE WITH SAID LINE, SOUTH 34 DEGREES 09 MINUTES EAST 1,900 46 FEET, MORE OR LESS, TO THE POINT OF BEGINNING, CONTAINING 28.552 ACRES, MORE OR LESS; THE FOREGOING SURVEY AND DESCRIPTION PREPARED BY GEORGE LOSAK, N.C. REGISTRATION NUMBER L-494. COMMUNITY AQUTIC LIFESTYLE CENTER STORMWATER NARRATIVE & CALCULATIONS November 17, 2010 031315ZZ = G 41GINS�� Y• \� Q � GSP Consulting, PLLC. 6626 Gordon Road, Unit C Wilmington, North Carolina 28411 (910) 442-7870 RECF-TVED DEC 17 2010 ?PA6 As BY:v_.0 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. This project is for a portion of the overall tract. The project will consist of the construction of a Community Aquatic & Lifestyle Center and related site appurtenances. The proposed drainage area for this project is 11.8 acres and the total amount of impervious area draining to the stormwater management pond is 53.2%. SOILS The soils for this project consist of Leon (Hydrologic Soil Group 13/1)), Murville (Hydrologic Soil Group A/D) and Onslow (Hydrologic Soil Group 13) 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 comer 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 %-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. Drainage Area COMMUNITY AQUATIC LIFESTYLE CENTER Drainage Area DA 1 Wet Detention Pond Drainage Area 514,138 sf Drainage Area 11.80 lac Impervious Area Calculation Buildings 53,500 Pools 15,500 Pavement 125,000 Sidewalk 630 Outparcel 1 35,000 Outparcel 21 44,000 Total sf Total _2_73,630_ 6.28 ac % Impervious _ 53.20 Volume/Storage Calculation Design Storm (P) 1.5 in Schueler Method Runoff Coeff (RV) Required Volume (Vreq) 33,997 cf 1-Year Pre Dev. Volume 1-Year Runoff Depth 3.75 in Rv=0.05 + 0 9 ' IA 0.050 V=3630' RD * Rv `A 8,033 cf 1-Year Post Dev. Volume 1-Year Runoff Depth 3.75 in Rv=0.05 + 0.9 ' IA 0.529 V=3630' Ro' Rv' A 84,992 cf Required Volume (Vreq) 76,958 cf Infiltration Calculation System Width (W) System Length (L) System Area (SF) Infiltration Rate (It) System Outflow (Ot) 50 001 ft _l m_ool ft 5000 sf 2.2 in/hr 0.258 cfs RV = %IMP'0.009+0.05 Vreq = (P/12)'RV'DA ARM Boring Location #2 Ot = It'L'W/43,200 2 a SEAL = 031315 '. �vGIN�oa'tt.�.� Y S • PP�tO i 4 7N'v -• __, POND N0.1 . _ CONTOUR INCR ACCUM CONTOUR AREA VOL VOL [sq ft] [cu ft] [Cu ft] 22.0 13495 0 0 23.0 15360 14,428 14,428 24.0 17291 16,326 30,753 25.0 19289 18,290 49,043 26.0 21354 20,322 69,365 26.2 21774 4,313 73,677 267 25366 11,785 85,462 FOREBAY CONTOUR INCR ACCUM CONTOUR AREA VOL VOL [sq ft] [cu ft] [cu ft] 24.0 6213 0 0 25.0 7951 7,082 7,082 26.0 9715 8,833 15,915 26.2 10070 1,978 17,894 26.7 10964 5,259 23,152 Ape" pool 36,330 Ashen bottom 31,844 VOLUME Aperm pool Ashen bottom Apond bottom Apond bottom 13,495 Total 108,614 36,330 31,844 13,495 Depth 4.2 PROVIDED FOR FOREBAY 21.3% daverage 3.46 STORAGE CONTOUR INCR ACCUM CONTOUR AREA VOL VOL [sq ft] [cu ft] [cu ft] 26.7 36330 0 0 27.0 39370 11,355 11,355 28.0 48017 43,694 55,049 28.5 49412 24,357 79,406 POND RELEASE TIME FOR CONTROL PIPE: POND 1 POND RELEASE TIME FOR CONTROL PIPE: STORAGE ORIFICE STORAGE OUTFLOW RELEASE ELEVATION ELEVATION VOLUME RATE TIME (FT) (FT) (CF) (CFS) (HOURS) 27.52 25.50 33,997 0.194 48.6 TOTAL HOURS 48.6\ DAYS '" 2.03 \-- CONTROL PIPE: 3 INCH ORIFICE HOLE USED ORIFICE EQUATION TO DETERMINE OUTFLOW RATE Q = Cd*A*(2gh)^1/2 � yam•. 1'Y DEC 2 2 2010 By:_ POND RELEASE TIME FOR CONTROL PIPE: POND 1 POND RELEASE TIME FOR CONTROL PIPE: STORAGE ORIFICE STORAGE OUTFLOW RELEASE ELEVATION ELEVATION VOLUME RATE TIME (FT) (FT) (CF) (CFS) (HOURS) 28.50 26.70 79,406 0.183 120.5 TOTAL HOURS 120.5 DAYS 5.00 CONTROL PIPE: 3 INCH ORIFICE HOLE USED ORIFICE EQUATION TO DETERMINE OUTFLOW RATE Q = Cd*A*(2gh)^I/2 Hydrograph Summary Report Hydraflow Hydrographs by lntelisolve v9.1 Hyd.rt No. ograph type rigin) Peak flow (cfs) Time interval (min) Time to peak (min) Hyd. volume (cult) Inflow hyd(s) Maximum elevation (ft) Total strge used (cuft) Hydrograph description 1 SCS Runoff 21.88 3 726 79,285 ---- ------ ------ POND EXISTING.gpw Return Period: 10 Year Wednesday, Nov 17, 2010 Hvdroaranh Renort 2 Hydraflow Hydrographs by Intelisolve v9 1 Wednesday, Nov 17, 2010 Hyd. No. 1 POND Hydrograph type = SCS Runoff Peak discharge = 21.88 cfs Storm frequency = 10 yrs Time to peak = 726 min Time interval = 3 min Hyd. volume = 79,285 cuft Drainage area = 11.800 ac Curve number = 53' Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = USER Time of conc. (Tc) = 5.00 min Total precip. = 7.06 in Distribution = Type III Storm duration = 24 hrs Shape factor = 484 Composite (Area/CN) _ [(3.370 x 36) + (8,430 x 60)] / 11 800 Q (Cfs) 24.00 rI ie 16.00 12.00 : KI • m POND Hyd. No. 1 -- 10 Year Q (Cfs) 24.00 20.00 16.00 1200 MI 4.00 0.00 0.00 0 180 360 540 720 900 1080 1260 1440 1620 Hyd No. 1 Time (min) Pond Report a HydraBow Hydrographs by Intelisolve v9 1 Wednesday, Nov 17, 2010 Pond No. 1 - POND Pond Data Contours - User -defined contour areas. Conic method used for volume calculation. Begining Elevation = 26.70 It Stage / Storage Table Stage (ft) Elevation (ft) Contour area (sqft) Incr. Storage (cuft) Total storage (cuft) 0.00 26.70 36,330 0 0 030 2700 39,370 11,351 11,351 130 28.00 48,017 43,618 54,968 230 29.00 50,547 49,272 104,240 330 30.00 53,403 51,963 156,203 Culvert / Orifice Structures Weir Structures [A] [B] [C] [PrfRsr] [A] [B] [C] [D] Rise (in) = 36.00 350 0.00 000 Crest Len (ft) = 20.00 000 000 000 Span (in) = 36.00 350 0.00 0.00 Crest El. (ft) = 2850 000 000 000 No. Barrels = 1 1 1 0 Weir Coeff. = 300 333 333 333 Invert El. (ft) = 25.50 2670 0.00 000 Weir Type = Broad -- --- -- Length (ft) = 10300 0.00 000 000 Multistage = Yes No No No Slope (%) = 0.30 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) = 0 000 (by Contour) Multi -Stage = n/a Yes Yes No TW Elev. (ft) = 000 Note Q4vert/Onf ce outflows are anal zed under inlet (id) and outlet (oc) control Weir risers checked for onfice conditions (ic) and submergence (s) Stage / Storage / Discharge Table Stage Storage Elevation CIv A CIv B CIv C Pr Rsr Wr A Wr B Wr C Wr D Exfil User Total fit cuft ft cfs cfs cfs cfs cfs cfs cfs cfs cfs cfs cfs 0.00 0 2670 000 0.00 - -- 0.00 -- -- --- --- --- 000 0.03 1,135 2673 8 44 oc 0.00 is -- -- 0.00 -- --- --- --- --- 000 0.06 2,270 26.76 8 44 oc 0.01 is --- -- 0.00 - - --- --- --- 0 01 0.09 3,405 26.79 8 44 oc 0.02 is -- --- 0.00 --- --- -- --- -- 0 02 0.12 4,540 26.82 8 44 oc 0.03 is -- --- 0.00 --- --- --- --- --- 0.03 0.15 5,675 26.85 8.44 oc 0051c -- - 0.00 --- --- --- --- --- 0.05 0.18 6,810 26.88 8.44 oc 0.06 is --- - 0.00 --- --- --- --- --- 0.06 0.21 7,946 26.91 8.44 oc 0 08 is --- -- 0.00 --- -- --- --- --- 0.08 024 9,081 26.94 8.44 oc 0 10 is --- --- 000 --- --- -- --- --- 0.10 027 10,216 26 97 8.44 oc 0.11 is -- --- 000 --- --- -- -- --- 0.11 0.30 11,351 2700 8.44 oc 0.13 is -- --- 0.00 --- --- -- --- --- 0.13 040 15,713 2710 8 44 oc 0.16 is --- - 0.00 --- --- --- --- --- 0 16 0.50 20,074 2720 8.44 oc 0.19 is -- -- 000 -- --- --- --- --- 0 19 0.60 24,436 2730 8 44 oc 0.22 is --- --- 000 --- -- --- --- --- 0.22 0.70 28,798 27.40 8 44 oc 0.24 is --- --- 0.00 -- -- --- --- --- 0.24 0 80 33,160 27.50 8.44 oc 0 26 is -- --- 000 --- --- --- --- --- 026 090 37,521 27.60 8.44 oc 0 28 is -- --- 000 --- --- -- --- --- 028 1 00 41,883 27.70 8.44 oc 0 30 is - -- 0.00 -- --- --- --- --- 030 1 10 46,245 27.80 8.44 oc 0 31 is -- - 0.00 --- --- --- --- --- 0 31 1 20 50,607 27.90 8 44 oc 0.33 is --- --- 0.00 --- --- -- --- --- 0.33 1 30 54,968 28.00 8 44 oc 0.35 is --- --- 0.00 --- --- --- --- --- 0.35 1 40 59,896 28.10 8 44 oc 0.36 is --- --- 000 -- --- --- --- --- 0.36 1.50 64,823 28.20 8.44 oc 0.37 is -- --- 000 --- --- --- --- -- 0.37 1.60 69,750 28.30 8.44 oc 0.39 is --- -- 000 --- --- --- --- --- 0.39 1.70 74,677 28.40 8.44 oc 0.40 is -- -- 000 -- --- --- --- --- 0.40 1.80 79,604 2850 8.44 oc 0.41 is --- -- 0.00 --- --- --- --- --- 0.41 1.90 84,531 28 60 8.44 oc 0 43 is --- --- 1 90 --- --- --- --- --- 2.32 2.00 89,459 2870 8 44 oc 0 44 is --- --- 537 --- -- --- --- --- 5.80 2.10 94,386 28.80 10 35 oc 0.45 is -- -- 986 --- --- --- --- --- 10.30 2.20 99,313 2890 15 59 oc 0 39 is --- -- 15.18 --- --- --- --- --- 15.57 2.30 104,240 29.00 21.56 oc 0 30 is --- --- 21.21 --- --- --- --- --- 21.52 2.40 109,437 29.10 26 99 oc 0.22 is --- --- 26 77 s --- --- --- --- --- 26.99 2.50 114,633 29.20 31.46 oc 0.21 is --- --- 31 25 s --- --- --- --- --- 31.45 2.60 119,829 29.30 35.27 oc 0.19 is --- --- 35.08 s --- --- --- --- --- 35.27 2.70 125,025 29.40 38 57 oc 0.18 is --- --- 38 39 s --- --- --- --- -- 38.57 2 80 130,222 29.50 41 48 oc 0 17 is -- --- 41 31 s --- --- --- --- --- 41.48 Continues on next page FOND Stage / Storage / Discharge Table Stage Storage Elevation Clv A Clv B Clv C PrfRsr Wr A Wr B Wr C Wr D Exfil User Total ft cuft ft cts cfs cfs cfs cfs cfs cfs cfs cfs cfs cfs 290 135,418 29.60 44 08 oc 0 16 is --- — 43.92 s --- --- --- -- -- 44.08 300 140,614 2970 46 44 oc 0.15 is --- -- 46 28 s --- --- --- -- --- 46.43 310 145,811 29.80 48 60 oc 0.14 is --- -- 48 46 s --- -- --- --- --- 48.59 320 151,007 29.90 50 62 oc 0.13 is --- -- 50 48 s --- -- -- --- --- 50.61 330 156,203 30.00 52 50 oc 0.12 is --- --- 52 36 s --- -- --- --- --- 52.49 End Hydrograph Summary Report Hydraflow Hydrographs by lntelisolve v9.1 Hyd. No. Hydrograph type (origin) Peak flow (cfs) Time interval (min) Time to peak (min) Hyd. volume (cult) Inflow hyd(s) Maximum elevation (ft) Total strge used (cuft) Hydrograph description 1 SCS Runoff 41.34 6 732 177,484 -- ------ ----- POND 2 Reservoir 9 875 6 762 176,733 1 2879 93,916 POND PROPOSED.gpw Return Period: 10 Year Wednesday, Nov 17, 2010 Hydrograph Report HydraBow Hydrographs by Intelisolve v9.1 Hyd. No. 1 POND Hydrograph type = SCS Runoff Storm frequency = 10 yrs Time interval = 6 min Drainage area = 11.800 ac Basin Slope = 0.0 % Tc method = USER Total precip. = 7.06 in Storm duration = 24 hrs Composite (Area/CN) _ [(1 580 x 36) + (3.940 x 60) + (6.280 x 98)] / 11 800 Q (cfs) 50.00 's ie 30.00 20.00 10.00 POND Hyd. No. 1 -- 10 Year `A Wednesday, Nov 17, 2010 Peak discharge = 41.34 cfs Time to peak = 732 min Hyd. volume = 177,484 cuft Curve number = 77` Hydraulic length = 0 ft Time of conc. (Tc) = 10.00 min Distribution = Type III Shape factor = 484 Q (Cfs) 50.00 3000 20.00 10.00 0.00 ' ' ' ' i I I I I I ' 000 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 Hyd No. 1 Time (min) Hydrograph Report 3 HydraHow Hydrographs by Intelisolve v9.1 Wednesday, Nov 17, 2010 Hyd. No. 2 POND Hydrograph type = Reservoir Peak discharge = 9.875 cfs Storm frequency = 10 yrs Time to peak = 762 min Time interval = 6 min Hyd. volume = 176,733 cuft Inflow hyd. No. = 1 -POND Max. Elevation = 28.79 ft Reservoir name = POND Max. Storage = 93,916 cuft Storage Indication method used Q (cfs) 50.00 40.00 30.00 20.00 10.00 0 00 0 720 Hyd No. 2 POND Hyd. No. 2 -- 10 Year 1440 2160 2880 3600 4320 5040 5760 Hyd No. 1 Total storage used = 93,916 cuft Q (cfs) 50.00 40.00 30.00 20.00 10.00 --L- 0.00 6480 Time (min) Coo Storm Sewer Tabulation Page 1 Station Len Drng Area Rnoff Area x C Tc Rain Total Cap Vel Pipe Invert Elev HGL Elev Grind / Rim Elev Line ID core ff (1) flow full LineFT Incr F Incr Total Inlet Syst Size Slope Dn Up Dn Up Dn Up (ft) (ac) (C) (min) (min) (in/hr) (cfs) (cfs) (ft/s) (in) M (ft) (ft) (ft) (ft) (ft) (ft) 1 End 99 033 1.54 0.85 0.28 1.07 100 11.9 6.5 6.91 12.45 2.20 24 0.30 24.00 2430 2879 28 88 0.00 29.50 2-1 2 1 178 0.70 1 21 0.65 0.46 079 10.0 10.9 6.6 5.20 12.34 1.66 24 0 30 2430 24.83 29.01 29.11 29.50 29.50 3-2 3 2 169 0 51 0.51 0.65 0 33 0.33 100 100 6.8 224 3.55 1.82 15 0.30 24.83 25.34 29.15 29.35 29.50 29.09 4-3 Project File STORM 4-1 Sim Number of lines: 3 Run Date: 11-17-2010 NOTES: Intensity = 2654.13 / (Inlet time + 55.70) A 1.43; Return period = 10 Yrs ; c = cu e = ellip b = box Hydraf m Storm Sewers 200E v12 01 r H 0 Storm Sewer Tabulation Page Station Len Drng Area Rnoff Area x C Tc Rain Total Cap Val Pipe Invert Elev HGL Elev Grind I Rim Elev Line (b coeff (1) flow full Line Incr Total Incr Total Inlet Syst Size Slope Dn Up Dn Up Dn Up FUne (ft) (ac) (ac) (C) (min) (min) (inlhr) (cfs) (cfs) (ftts) (in) (%) (ft) (ft) (ft) (ft) IN (ft) 1 End 53 0.24 072 085 020 0.61 10.0 11.0 6.6 404 355 330 15 0.30 24.00 2416 2879 29.00 000 2950 6-5 2 1 178 048 0.48 0.85 0.41 0.41 10.0 10.0 6.8 275 352 224 15 0.30 24 16 24.69 29.17 29.50 2950 2950 7-6 Project File STORM 7-5.stm Number of lines 2 Run Date. 11-17-2010 NOTES Intensity = 2654.13 / (Inlet time + 55 70) ^ 1 43, Return period = 10 Yrs. ; c = cir e = ellip b = box Hydratlow Storm Sewers 2008 v12 01 Col 0 Storm Sewer Tabulation Page 1 Station Len Drng Area Rnoff Area x C Tc Rain Total Cap Val Pipe Invert Elev HGL Elev Grnd I Rim Elev Line (D coeff (I) flow full Line Incr Total Incr Total Inlet Syst Size Slope Dn Up Dn Up Dn Up FLn, (ft) (ac) (ac) (C) (min) (min) (inlhr) (cfs) (cfs) (f /s) (in) (%) (ft) (ft) (ft) (ft) (ft) (ft) 1 End 53 0.24 0.72 085 0.20 0.61 100 11.0 6.6 404 3 55 3.30 15 0.30 24.00 24.16 2879 29 00 0.00 29.50 9-8 2 1 178 0.48 048 085 0.41 0 41 10.0 10.0 6.8 2.75 3.52 2.24 15 0.30 24.16 24.69 29.17 2950 2950 29 50 10-9 Project File STORM 10-B.stm Number of lines. 2 Run Date: 11-17-2010 NOTES: Intensity = 2654.13 / (Inlet time + 55.70) A 1.43, Return period = 10 Yrs ; c = cv e = ellip b = box HydraOew Storm Sewers 2wa v12 01 Storm Sewer Tabulation . Page 1 Station Len Drng Area Rnoff Area x C Tc Rain TotalTCapVel) Pipe Invert Elev HGL Elev Grnd / Rim Elev Line IDcoeff (I) flowIncr Total Incr Total Inlet Syst Size Slope Dn Up Dn Up Dn Up (ft) (ac) (ac) (C) (min) (min) (in/hr) (cfs) (in) (%) (ft) (ft) (ft) (ft) (ft) (ft) i End , 53 0.35 099 0 85 0.30 0.84 10.0 11 0 6.6 5.56 5.77 3 15 18 030 24.00 24.16 28.79 28.94 0.00 2950 12-11 2 1 178 064 064 085 0.54 0.54 100 10.0 6.8 367 3.52 299 15 0.30 24.16 24.69 2903 2961 2950 29.50 13-12 Project File. STORM 13-11 stm Number of lines 2 Run Date 11-17-2010 NOTES Intensity = 2654 13 / (Inlet bme + 55.70) " 1.43, Return period = 10 Yrs ; c = cir e = ellip b = box Hytlreflow Storm Sewers 2008 02 01 1s 15 m u Storm Sewer Tabulation Page 1 Station Len Drng Area Rnoff Area x C Tc Rain Total Cap Val Pipe Invert Elev HGL Elev Grnd / Rim Elev Line ID coeff (1) flow full Line Incr Total Incr Total Inlet Syst Size Slope On Up Dn Up Dn Up FLine (ft) (ac) (ac) (C) (min) (min) (in/hr) (cfs) (cfs) (ft/s) (in) (%) IN (ft) (ff) (ft) (ft) (ft) 1 End 76 0.39 4.33 0.85 0 33 2.85 100 10.7 6.6 18.96 36 69 2.68 36 0.30 2400 2423 28.79 28 85 0.00 29.50 15-14 2 1 134 3.94 3.94 064 2.52 252 10.0 10.0 6 8 1702 36.46 2.41 36 0.30 24.23 2463 29.01 29.09 29.50 29.50 16-15 Project File: STORM 16-14.stm Number of lines: 2 Run Date: 11-17-2010 NOTES: Intensity = 2654.13 / (Inlet time + 55.70) ^ 1.43, Return period = 10 Yrs ; c = clr e = ellip b = box Hydreflow Storm Sewers 2008 v1201 Hydrograph Summary Report HydraBow Hydrographs by lntelisolve v91 Hyd. No. Hydrograph type (origin) Peak flow (cfs) Time interval (min) Time to peak (min) Hyd. volume (cult) Inflow hyd(s) Maximum elevation (ft) Total strge used (cuft) Hydrograph description 1 SCS Runoff 41.34 6 732 177,484 ---- ------ ------ POND 2 Reservoir 9 940 6 762 176,513 1 2880 94,116 POND PROPOSED.gpw Return Period 10 Year Wednesday, Dec 22, 2010 2 Hydrograph Report Hydraflow Hydrographs by Intelisolve v9.1 Wednesday, Dec 22, 2010 Hyd. No. 1 POND Hydrograph type = SCS Runoff Peak discharge = 41.34 cfs Storm frequency = 10 yrs Time to peak = 732 min Time interval = 6 min Hyd. volume = 177,484 cuft Drainage area = 11.800 ac Curve number = 77' Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = USER Time of conc. (Tc) = 10.00 min Total precip. = 7.06 in Distribution = Type III Storm duration = 24 hrs Shape factor = 484 Composite (Area/CN) _ [(1 580 x 36) + (3.940 x 60) + (6 280 x 98)1 / 11 800 Q (cfs) 50.00 30.00 20.00 10.00 0.00 0 120 240 360 480 Hyd No. 1 POND Hyd. No. 1 -- 10 Year Q (Cfs) 5000 K' 1 11 30.00 20.00 10.00 ' 0.00 600 720 840 960 1080 1200 1320 1440 1560 Time (min) Hydrograph Report 3 Hydraflow Hydrographs by Intelisolve v9 1 Wednesday, Dec 22, 2010 Hyd. No. 2 POND Hydrograph type = Reservoir Peak discharge = 9.940 cfs Storm frequency = 10 yrs Time to peak = 762 min Time interval = 6 min Hyd. volume = 176,513 cuft Inflow hyd. No. = 1 -POND Max. Elevation = 28.80 ft Reservoir name = POND Max. Storage = 94,116 cuft Storage Indication method used Q (cfs) 50.00 30.00 20.00 10.00 0.00 i 0 720 — Hyd No. 2 POND Hyd. No. 2 -- 10 Year 1440 2160 2880 3600 4320 5040 5760 6480 — Hyd No. 1 L_! !! Total storage used = 94,116 cuft Q (cfs) 5000 40.00 3000 20.00 10.00 0.00 7200 Time (min) Pond Report a Hydraflow Hydrographs by Intelisolve v9.1 Wednesday, Dec 22, 2010 Pond No. 1 - POND Pond Data Contours - User -defined contour areas. Conic method used for volume calculation. Beglning Elevation = 26.70 ft Stage / Storage Table Stage (ft) Elevation (ft) Contour area (sqft) Incr. Storage (cult) Total storage (cuft) 0.00 2670 36,330 0 0 0.30 27.00 39,370 11,351 11,351 1.30 28.00 48,017 43,618 54,968 230 29.00 50,547 49,272 104,240 3.30 30.00 53,403 51,963 156,203 Culvert / Orifice Structures Weir Structures [A] [B] [C] [PrfRsr] [A] [B] [C] [D] Rise (in) = 36.00 3.00 0.00 0.00 Crest Len (ft) = 20.00 0.00 0.00 000 Span (in) = 36.00 3.00 0.00 0.00 Crest El. (ft) = 28.50 000 0.00 0.00 No. Barrels = 1 1 1 0 Weir Coeff. = 300 3.33 3.33 3.33 Invert El. (ft) = 25.50 2670 0.00 000 Weir Type = Broad -- -- --- Length (ft) = 103.00 0.00 0.00 000 Multi -Stage = Yes No No No Slope (%) = 0.30 0.00 0.00 n/a N-Value = .010 .013 .013 n/a Orifice Coeff. = 060 0.60 0.60 0.60 Exffl.(inthr) = 0.000 (by Contour) Multi -Stage = rue Yes Yes No TW Elev. (ft) = 0.00 Note CulverVOnfice oudlaws are anar zed under inlet (m) and outlet loci control Weir risers checked for onfim conditions (ic) and submergence (s) Stage I Storage / Discharge Table Stage Storage Elevation CIv A Clv B Clv C PriRsr Wr A Wr B Wr C Wr D Exfil User Total It cult ft cis cfs cfs cfs cfs cfs cfs cfs cis cfs cfs 0.00 0 26.70 0.00 0.00 --- --- 0.00 --- --- -- --- --- 0.00 003 1,135 26.73 8.44 oc 0.00 is --- --- 0.00 --- --- --- --- --- 0.00 0.06 2,270 2676 8.44 oc 0.01 is --- --- 0.00 --- --- --- --- --- 0.01 0.09 3,405 26.79 8.44 oc 0 02 is --- -- 0.00 --- --- -- --- --- 0.02 0.12 4,540 26.82 8.44 oc 0 03 is -- --- 0.00 --- --- --- --- --- 0.03 0.15 5,675 26.85 8.44 oc 0.04 is --- --- 000 --- --- -- --- --- 0.04 0.18 6,810 26.88 8.44 oc 0.06 is --- --- 000 --- -- --- --- --- 0.06 0.21 7,946 26.91 8.44 oc 0.07 Ic --- --- 000 --- --- --- --- --- 0.07 0.24 9,081 26.94 8.44 oc 0 08 Ic -- --- 0.00 --- -- --- -- --- 0.08 0.27 10,216 26.97 8.44 oc 0 09 Ic -- --- 000 --- --- --- --- --- 0.09 0.30 11,351 27.00 8.44 oc 0A0 is --- --- 000 -- -- -- --- --- 010 0.40 15,713 27 10 8.44 oc 0 12 is -- -- 000 --- --- -- --- -- 012 0.50 20,074 2720 8.44 oc 0.14 Ic -- --- 000 --- --- --- --- --- 014 0.60 24,436 2730 8.44 oc 0.16 is --- --- 0.00 --- --- --- --- --- 016 0.70 28,798 27.40 8.44 oc 0.18 is --- --- 000 -- --- --- --- --- 018 0.80 33,160 27.50 8.44 oc 0.19 is -- --- 000 -- --- --- --- --- 0.19 0.90 37,521 27.60 8.44 oc 0.21 is --- --- 0.00 -- -- -- --- --- 021 1 00 41,883 27.70 8.44 oc 0.22 is -- -- 0.00 --- --- --- -- -- 022 1 10 46,245 27.80 8.44 oc 0.23 is --- --- 000 -- --- --- --- --- 023 1 20 50,607 27.90 8.44 oc 0.25 is --- -- 000 --- --- --- -- --- 025 1 30 54,968 2800 8 44 oc 0.26 is --- --- 000 --- --- --- --- --- 026 1 40 59,896 28 10 8 44 oc 0 27 is --- -- 0.00 --- --- --- --- --- 027 1.50 64,823 2820 8 44 oc 0 28 is --- --- 0.00 --- -- --- --- --- 0.28 1 60 69,750 2830 8 44 oc 0 29 is --- --- 000 --- --- --- --- --- 0.29 1 70 74,677 2840 8.44 oc 0.30 is --- --- 000 --- --- --- --- --- 030 1.80 79,604 2850 8 44 oc 0.31 is --- --- 0.00 --- --- --- --- --- 031 1 90 84,531 2860 8 44 oc 0.31 is --- --- 1.90 --- --- --- --- --- 2.21 200 89,459 2870 8 44 oc 0 32 is --- --- 537 --- --- --- --- --- 5.69 210 94,386 2880 10.35 oc 0.33 Ic --- --- 986 --- -- --- --- --- 10 19 220 99,313 2890 15.59 oc 0 29 Ic --- --- 15.18 --- --- --- --- --- 1547 230 104,240 2900 21 46 oc 0 23 Ic --- --- 21.21 -- --- --- --- --- 21 44 240 109,437 29.10 26.95 oc 0 16 Ic -- -- 26.79 s --- --- --- --- --- 26.95 250 114,633 29.20 31 43 oc 0 15 Ic --- --- 31.27 s --- --- --- --- -- 31 A3 260 119,829 29.30 35.25 oc 0 14 Ic --- -- 35.10 s --- --- --- --- --- 35.25 270 125,025 2940 , 38.56 oc 0 13 is --- --- 38.42 s --- --- --- --- --- 38.55 , 2.80 130,222 2950 41.47 oc 0 12 is --- --- 41.35 s --- --- -- --- --- 41 A7 Continues on next page tit POND Stage / Storage / Discharge Table Stage Storage Elevation Clv A Clv 8 Clv C ft cuft ft cfs cis cfs 2.90 135,418 29.60 44.07 oc 0.12 is -- 3.00 140,614 29.70 46.43 oc 0.11 is --- 3.10 145,811 29.80 48.60 oc 0.10 is --- 3.20 151,007 29.90 50.61 oc 0.10 is -- 3.30 156,203 3000 52.50 oc 0.09 is --- End PrfRsr WrA Wr B Wr C Wr D Exfil User Total cfs cis cis cis cis cfs cfs cfs --- 43 95 s --- --- --- --- --- 44.07 -- 46 32 s -- --- --- --- --- 46A2 --- 48 49 s --- -- --- --- --- 4860 --- 5051 s --- --- --; --- --- 50.61 --- 52 40 s -- -- --- --- --- 5249