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HomeMy WebLinkAbout20090063 Ver 2_401 Application_20100210dq-ao(3 Va 70_qf_..? February 4, 2010 NC DWQ 401 /Wetlands Unit 1650 Mail Service Center. Suite 250 Raleigh, NC 27699-1650 B?ARTLETT Mam+NC a suwuEn+c, rc 1906 Nash Street North Wilson, NC 27893-1726 Phone: (252) 399-0704 Fax: (252) 399-0804 REFERENCE: M6-MIDDLE SCHOOL ROLESVILLE, NC -WAKE CO. Ms. Karoly: sJ ?IJS FEB it DENR - WAXER t,'.?Pl IlY Please find herewith, a revised PCN Application and supporting documentation for the above referenced project. The 37.51 acre project site is located off of Burlington Mills Road in Rolesville, North Carolina. A PCN application was submitted approximately 1/16/2009 and the application was deemed incomplete. A meeting with Annette Lucas was held shortly thereafter to determine the requirements needed to meet 401 certification. The project was put on hold by the Wake County School Board until December 2009 and we are now resubmitting the project with the new $240.00 submittal fee. The site will consist of a middle school with associated drives and parking with three athletic fields. The bus loop access drive will perpendicularly cross one wetland area, another access drive to the multi-field will perpendicularly cross a buffer and wetland area, and there will be a utility and foot bridge perpendicularly crossing a buffer and wetland area. Handicap accessibility will require some fill in Zone 1 and Zone 2 of the buffer with the foot bridge spanning most of the Zone 1 buffer at the utility crossing. To meet 401 certification requirements, stormwater from areas with >24% BUA was directed to either a main stormwater detention pond or one of four bioretention areas. Two level spreaders will be used to provide diffuse flow for discharge points toward the Neuse Buffer area for discharge points <24%BUA. The information has also been sent to the US Army Corps of Engineers. If you have any questions or need additional information, please contact our office. Thank you. Sincerely, Vlonathan ee Meade Environmental Specialist Enclosure AGENT AUTHORIZATION FORM PROPERTY LEGAL DESCRIPTION: LOT NO. PLAN NO. PARCEL ID: 1758387160 STREET ADDRESS: 4700 Burlington Mills Road Rolesville, NC 27571 Please print: Property Owner: Wake County Board of Education Property Owner: The undersigned, registered property owners of the above noted property, do hereby authorize Robert S. Bartlett , of Bartlett Engineering and Surveying, PC (Contractor / Agent) (Name of consulting firm) to act on my behalf and take all actions necessary for the processing, issuance and acceptance of this permit or certification and any and all standard and special conditions attached. Property Owner's Address (if different than property above): Wake Co. Board of Education 1429 Rocky Quarry Road, Suite 116 Raleigh, NC 27610-4145 Telephone: 919-508-9048 (Tim Driscoll - WCPSS Project Manager) We hereby certify the above information submitted in this application is true and accurate to the best of our knowledge. Authoriz d ignature Authorized Signature Date: Z-/-/o Date: O T Office Use Only: Corps action ID no. DWQ project no. Form Version 1.3 Dec 10 2008 Pre-Construction Notification (PCN) Form A. Applicant Information 1. Processing 1 a. Type(s) of approval sought from the Corps: ®Section 404 Permit F-1 Section 10 Permit 1b. Specify Nationwide Permit (NWP) number: 39 or General Permit (GP) number: 1c. Has the NWP or GP number been verified by the Corps? ® Yes ? No 1d. Type(s) of approval sought from the DWQ (check all that apply): ® 401 Water Quality Certification - Regular ? Non-404 Jurisdictional General Permit ? 401 Water Quality Certification - Express ® Riparian Buffer Authorization 1 e. Is this notification solely for the record because written approval is not required? For the record only for DWQ 401 Certification: ? Yes ® No For the record only for Corps Permit: ® Yes ? No 1f. Is payment into a mitigation bank or in-lieu fee program proposed for mitigation of impacts? If so, attach the acceptance letter from mitigation bank or in-lieu fee program. ? Yes ® No 1 g. Is the project located in any of NC's twenty coastal counties. If yes, answer 1 h below. ? Yes ® No 1 h. Is the project located within a NC DCM Area of Environmental Concern (AEC)? ? Yes ® No 2. Project Information 2a. Name of project: Rolesville Middle School 2b. County: Wake 2c. Nearest municipality / town: Rolesville 2d. Subdivision name: N/A 2e. NCDOT only, T.I.P. or state project no: N/A 3. Owner Information 3a. Name(s) on Recorded Deed: Wake County 3b. Deed Book and Page No. 13179, 1360 3c. Responsible Parry (for LLC if applicable): Wake County Board of Education 3d. Street address: 1551 Rock Quarry Road 3e. City, state, zip: Raleigh, NC 27610-4145 3f. Telephone no.: 919-856-8247 3g. Fax no.: 919-856-2911 3h. Email address: Page 1 of 11 PCN Form - Version 1.3 December 10, 2008 Version 4. Applicant Information (if different from owner) 4a. Applicant is: ® Agent ? Other, specify: 4b. Name: 4c. Business name (if applicable): 4d. Street address: 4e. City, state, zip: 4f. Telephone no.: 4g. Fax no.: 4h. Email address: 5. Agent/Consultant Information (if applicable) 5a. Name: Robert S. Bartlett 5b. Business name (if applicable): Bartlett Engineering and Surveying, PC 5c. Street address: 1906 Nash St NW 5d. City, state, zip: Wilson, NC 27893 5e. Telephone no.: 252-399-0704 5f. Fax no.: 252-399-0804 5g. Email address: robert@bartletteng.com Page 2 of 11 PCN Form - Version 1.3 December 10, 2008 Version B. Project Information and Prior Project History 1. Property Identification 1 a. Property identification no. (tax PIN or parcel ID): 17583387160 1 b. Site coordinates (in decimal degrees): Latitude: 35.91568 Longitude: - 78.48002 (DD.DDDDDD) (-DD.DDDDDD) 1 c. Property size: 37.51 acres 2. Surface Waters 2a. Name of nearest body of water (stream, river, etc.) to U T to Toms Creek proposed project: . . 2b. Water Quality Classification of nearest receiving water: C;NSW 2c. River basin: Neuse 3. Project Description 3a. Describe the existing conditions on the site and the general land use in the vicinity of the project at the time of this application: The 37.51 acre site is partially wooded with one wetland feature in the middle and one stream/wetland feature on the south side. Bounded on the north by Burlington Mills Rd and on the south by a subdivision with two large lots on the east and west side. 3b. List the total estimated acreage of all existing wetlands on the property: 0.894 Acres 3c. List the total estimated linear feet of all existing streams (intermittent and perennial) on the property: 1144 LF 3d. Explain the purpose of the proposed project: School site with drives, parking, and three athletic fields. 3e. Describe the overall project in detail, including the type of equipment to be used: Project will consist of clearing and grading with appropriate erosion control measures, construction of a middle school with two access drives, parking, and three athletic fields. Due to grading restrictions, three walls 6-10 ft high will be required. 4. Jurisdictional Determinations 4a. Have jurisdictional wetland or stream determinations by the Corps or State been requested or obtained for this property / ®Yes ? No ? Unknown project (including all prior phases) in the past? Comments: 4b. If the Corps made the jurisdictional determination, what type ? Preliminary ® Final of determination was made? 4c. If yes, who delineated the jurisdictional areas? Agency/Consultant Company: Arcadis Name (if known): Other: S&ME 4d. If yes, list the dates of the Corps jurisdictional determinations or State determinations and attach documentation . Signed JD 6-18-08 with SAW 2008-01234 5. Project History 5a. Have permits or certifications been requested or obtained for ?Yes ® No ? Unknown this project (including all prior phases) in the past? 5b. If yes, explain in detail according to "help file" instructions. Page 3 of 11 PCN Form - Version 1.3 December 10, 2008 Version 6. Future Project Plans 6a. Is this a phased project? ? Yes ® No 6b. If yes, explain. Page 4 of 11 PCN Form - Version 1.3 December 10, 2008 Version C. Proposed Impacts Inventory 1. Impacts Summary 1a. Which sections were completed below for your project (check all that apply): ? Wetlands ? Streams - tributaries ? Buffers ? Open Waters ? Pond Construction 2. Wetland Impacts If there are wetland impacts proposed on the site, then complete this question for each wetland area impacted. 2a. 2b. 2c. 2d. 2e. 2f. Wetland impact Type of jurisdiction number - Type of impact Type of wetland Forested (Corps - 404, 10 Area of impact Permanent (P) or (if known) DWQ - non-404, other) (acres) Temporary T W1 ®P ? T Fill/Access ® Yes ® Corps 0 028 Crossing ? No ? DWQ . W2 ? P ®T Utility Crossing ® Yes ? No ® Corps ? DWQ 0.016 W3 ®P ? T Fill/Access ® Yes ® Corps 0 041 Crossing ? No ? DWQ . W4 ? P ? T ? Yes ? Corps ? No ? DWQ W5 ? P ? T ? Yes ? Corps ? No ? DWQ W6 ? P ? T ? Yes ? Corps ? No ? DWQ 2g. Total wetland impacts 0.085 2h. Comments: 3. Stream Impacts If there are perennial or intermittent stream impacts (including temporary impacts) proposed on the site, then complete this question for all stream sites impacted. 3a. 3b. 3c. 3d. 3e. 3f. 3g. Stream impact Type of impact Stream name Perennial Type of jurisdiction Average Impact number - (PER) or (Corps - 404, 10 stream length Permanent (P) or intermittent DWQ - non-404, width (linear Temporary (T) (INT)? other) (feet) feet) S1 ®P ? T Piped Access Crossing UT to Toms Crk ® PER ? INT ® Corps ? DWQ 12 105 S2 ? P ® T Utility Crossing UT to Toms Crk ® PER ? INT ® Corps ? DWQ 12 30 S3 ? P ? T ? PER ? Corps ? INT ? DWQ S4 ? P ? T ? PER ? Corps ? INT ? DWQ S5 ? P ? T ? PER ? Corps ? INT ? DWQ S6 ? P ? T ? PER ? Corps ? INT ? DWQ 3h. Total stream and tributary impacts 135 3i. Comments: Page 5 of 11 PCN Form - Version 1.3 December 10, 2008 Version 4. Open Water Impacts If there are proposed impacts to lakes, ponds, estuaries, tributaries, sounds, the Atlantic Ocean, or any other open water of the U.S. then individually list all open water impacts below. 4a. Open water impact number - Permanent (P) or Temporary T 4b. Name of waterbody (if applicable) 4c. Type of impact 4d. Waterbody type 4e. Area of impact (acres) 01 ?P?T 02 ?P?T 03 ?P?T 04 ?P?T 4L Total open water impacts 4g. Comments: 5. Pond or Lake Construction If and or lake construction proposed, then complete the chart below. 5a. Pond ID 5b. Proposed use or purpose 5c. Wetland Impacts (acres) 5d. Stream Impacts (feet) 5e. Upland (acres) number of pond Flooded Filled Excavated Flooded Filled Excavated Flooded P1 Stormwater 0 0 0 0 0 0 0.373 P2 5L Total 0.373 5g. Comments: 5h. Is a dam high hazard permit required? ? Yes No If yes, permit ID no: 5i. Expected pond surface area (acres): 0.373 5j. Size of pond watershed (acres): 13.3 5k. Method of construction: Conventional Page 6 of 11 PCN Form - Version 1.3 December 10, 2008 Version 6. Buffer Impacts (for DWQ) If project will impact a protected riparian buffer, then complete the chart below. If yes, then individually list all buffer impacts below. If an impacts require mitigation, then you MUST fill out Section D of this form. 6a. ® Neuse ?Tar-Pamlico ? Other: Project is in which protected basin? ? Catawba ? Randleman 6b. 6c. 6d. 6e. 6f. 6g. Buffer impact number - Reason Buffer Zone 1 impact Zone 2 impact Permanent (P) or for Stream name mitigation (square feet) (square feet) Temporary T im act required? 61 ®P ? T Access UT to Toms Crk ®Neos 6092 3664 Utility/ B2 ®P ? T Grading UT to Toms Crk ? Yes 4718 5884 in ®No zone2 B3 ®P ? T Grading UT to Toms Crk ®Neos 150 200 6h. Total buffer impacts 10960 9748 6i. Comments: B2 impacts include grading in zone 2. B3 impacts include discharge pipe from bioretention area. D. Impact Justification and Mitigation 1. Avoidance and Minimization 1a. Specifically describe measures taken to avoid or minimize the proposed impacts in designing project. Site was configured to cross wetland and buffer zones at narrowest of places to access site. The utility crossing will also have a 40' foot bridge to avoid any permanent wetland or stream impacts. 1 b. Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques. Limits of disturbance will clearly be marked and silt fence used along wetlands and buffer zones downslope of any disturbance along with temporary diversions and sediment traps upslope of wetland/buffer areas. 2. Compensatory Mitigation for Impacts to Waters of the U.S. or Waters of the State 2a. Does the project require Compensatory Mitigation for ? Yes ® No impacts to Waters of the U.S. or Waters of the State? 2b. If yes, mitigation is required by (check all that apply): ? DWQ ? Corps ? Mitigation bank 2c. If yes, which mitigation option will be used for this El Payment to in-lieu fee program pro project? ? Permittee Responsible Mitigation 3. Complete if Using a Mitigation Bank 3a. Name of Mitigation Bank: 3b. Credits Purchased (attach receipt and letter) EType Quantity Page 7 of 11 PCN Form - Version 1.3 December 10, 2008 Version 3c. Comments: 4. Complete if Making a Payment to In-lieu Fee Program 4a. Approval letter from in-lieu fee program is attached. ? Yes 4b. Stream mitigation requested: linear feet 4c. If using stream mitigation, stream temperature: ? warm ? cool ?cold 4d. Buffer mitigation requested (DWQ only): square feet 4e. Riparian wetland mitigation requested: acres 4f. Non-riparian wetland mitigation requested: acres 4g. Coastal (tidal) wetland mitigation requested: acres 4h. Comments: 5. Complete if Using a Permittee Responsible Mitigation Plan 5a. If using a permittee responsible mitigation plan, provide a description of the proposed mitigation plan. 6. Buffer Mitigation (State Regulated Riparian Buffer Rules) - required by DWQ 6a. Will the project result in an impact within a protected riparian buffer that requires buffer mitigation? ? Yes ® No 6b. If yes, then identify the square feet of impact to each zone of the riparian buffer that requires mitigation. Calculate the amount of mitigation required. Zone 6c. Reason for impact 6d. Total impact (square feet) Multiplier 6e. Required mitigation (square feet) Zone 1 3 (2 for Catawba) Zone 2 1.5 6f. Total buffer mitigation required: 6g. If buffer mitigation is required, discuss what type of mitigation is proposed (e.g., payment to private mitigation bank, permittee responsible riparian buffer restoration, payment into an approved in-lieu fee fund). 6h. Comments: Page 8 of 11 PCN Form - Version 1.3 December 10, 2008 Version E. Stormwater Management and Diffuse Flow Plan (required by DWQ) 1. Diffuse Flow Plan 1 a. Does the project include or is it adjacent to protected riparian buffers identified ® Yes ? No within one of the NC Riparian Buffer Protection Rules? 1 b. If yes, then is a diffuse flow plan included? If no, explain why. Comments: Diffuse flow will be achieved by using level spreaders at stormwater ® Yes ? No discharge points not treated (under 24% impervious). Also, flow velocities of stormwater discharge points toward wetlands were kept under 2.0fusec. 2. Stormwater Management Plan 2a. What is the overall percent imperviousness of this project? 32.24% 2b. Does this project require a Stormwater Management Plan? ® Yes ? No 2c. If this project DOES NOT require a Stormwater Management Plan, explain why: 2d. If this project DOES require a Stormwater Management Plan, then provide a brief, narrative description of the plan: Discharge points with >24% impervious area will be treated using a combination of detention pond and bioretention areas. ? Certified Local Government 2e. Who will be responsible for the review of the Stormwater Management Plan? ? DWQ Stormwater Program ® DWQ 401 Unit 3. Certified Local Government Stormwater Review 3a. In which local government's jurisdiction is this project? Rolesville ? Phase II 3b. Which of the following locally-implemented stormwater management programs ? NSW ? USMP apply (check all that apply): ? Water Supply Watershed ® Other: None at this time 3c. Has the approved Stormwater Management Plan with proof of approval been ? Yes ® No attached? 4. DWQ Stormwater Program Review ? Coastal counties 4a. Which of the following state-implemented stormwater management programs apply ? HQW ? ORW (check all that apply): ? Session Law 2006-246 ® Other: 401 Certification 4b. Has the approved Stormwater Management Plan with proof of approval been attached? ? Yes ® No 5. DWQ 401 Unit Stormwater Review 5a. Does the Stormwater Management Plan meet the appropriate requirements? ® Yes ? No 5b. Have all of the 401 Unit submittal requirements been met? ® Yes ? No Page 9 of 11 PCN Form - Version 1.3 December 10, 2008 Version F. Supplementary Information 1. Environmental Documentation (DWQ Requirement) 1a. Does the project involve an expenditure of public (federal/state/local) funds or the ® Yes ? No use of public (federal/state) land? 1 b. If you answered "yes" to the above, does the project require preparation of an environmental document pursuant to the requirements of the National or State ? Yes ® No (North Carolina) Environmental Policy Act (NEPA/SEPA)? 1 c. If you answered "yes" to the above, has the document review been finalized by the State Clearing House? (If so, attach a copy of the NEPA or SEPA final approval ? Yes ? No letter.) Comments: 2. Violations (DWQ Requirement) 2a. Is the site in violation of DWQ Wetland Rules (15A NCAC 2H .0500), Isolated Wetland Rules (15A NCAC 2H .1300), DWQ Surface Water or Wetland Standards, ? Yes ® No or Riparian Buffer Rules (15A NCAC 213 .0200)? 2b. Is this an after-the-fact permit application? ? Yes ® No 2c. If you answered "yes" to one or both of the above questions, provide an explanation of the violation(s): 3. Cumulative Impacts (DWQ Requirement) 3a. Will this project (based on past and reasonably anticipated future impacts) result in ? Yes ® No additional development, which could impact nearby downstream water quality? 3b. If you answered "yes" to the above, submit a qualitative or quantitative cumulative impact analysis in accordance with the most recent DWQ policy. If you answered "no," provide a short narrative description. 4. Sewage Disposal (DWQ Requirement) 4a. Clearly detail the ultimate treatment methods and disposition (non-discharge or discharge) of wastewater generated from the proposed project, or available capacity of the subject facility. Wastewater will be discharged to a public sanitary sewer system. Page 10 of 11 PCN Form - Version 1.3 December 10, 2008 Version 5. Endangered Species and Designated Critical Habitat (Corps Requirement) 5a. Will this project occur in or near an area with federally protected species or ? Yes ® No habitat? 5b. Have you checked with the USFWS concerning Endangered Species Act ? Yes ® No impacts? ? Raleigh 5c. If yes, indicate the USFWS Field Office you have contacted. ? Asheville 5d. What data sources did you use to determine whether your site would impact Endangered Species or Designated Critical Habitat? 6. Essential Fish Habitat (Corps Requirement) 6a. Will this project occur in or near an area designated as essential fish habitat? ? Yes ® No 6b. What data sources did you use to determine whether your site would impact Essential Fish Habitat? 7. Historic or Prehistoric Cultural Resources (Corps Requirement) 7a. Will this project occur in or near an area that the state, federal or tribal governments have designated as having historic or cultural preservation ? Yes ® No status (e.g., National Historic Trust designation or properties significant in North Carolina history and archaeology)? 7b. What data sources did you use to determine whether your site would impact historic or archeological resources? 8. Flood Zone Designation (Corps Requirement) 8a. Will this project occur in a FEMA-designated 100-year floodplain? ? Yes ® No 8b. If yes, explain how project meets FEMA requirements: 8c. What source(s) did you use to make the floodplain determination? Applicant/Agent's Printed Name Applicant/Agent's Signature Date (Agent's signature is valid only if an authorization letter from the applicant is provided. Page 11 of 11 PCN Form - Version 1.3 December 10, 2008 Version Version 1.4 January 9, 2009 401 Oversight/Express Permitting PCN Submittal Checklist The application fee (Checks may be made out to "N.C. Division of Water Quality" $240.00 for 401 Water Quality Certification with minor impacts - $570.00 for 401 Water Quality Certification with major impacts Express Review Fee (Amount requested on Acceptance Letter) ["? Five (5) complete and collated copies of the PCN Application and supporting documentation (instead of providing 5 copies of the full size plans you may provide two copies of full size plans along with three copies of 11 X 17 plans) Eg? Stormwater Management Plan (if applicable - see PCN Form Help File Section E) 1) Please provide three (3) copies of the stormwater management plans along with all supporting information pertaining to this project including the following: a. Entire site development/layout plans delineating all drainage areas; b. Design calculation sheets for all proposed BMP(s) sized for both on-site and off-site drainage; c. BMP supplements for each proposed BMP and Required Items Check List (http://h2o.enr.state.nc.us/su/bmp forms.htm) along with all required items; d. A Notarized Operation & Maintenance Agreement for each stormwater management facility; e. Detailed construction drawing sheets shall include (i) Erosion and sediment control plans; (ii) Installation and planting schedules for the proposed BMPs; (iii) Appropriately scaled plan views and cross sectional details of all BMPs and associated components - inlet and outlet structures, forebay, respective zones and pertinent elevations. If your project is located within a State implemented Riparian Buffer Rule Area, submit the following along with site plans and PCN form: 1) Three (3) copies of the details for on-site diffuse flow provisions, (refer to http://h2o.enr.state. nc. us/su/bm p_forms. htm ). [a'*"'DWQ Stream Determination Forms for streams on property and DWQ determination letter for wetlands or streams (if applicable). The following is the most critical of all the information that you must provide. The quality and detail of the information will often determine the expeditiousness of the review. The following is a checklist of the types of pertinent information required at a minimum: Maps and Plans: The most recent version of the 1:24,000 USGS Topographic Map - Please cleanly draw or delineate the site boundaries on the topographic map. [' The most recent version of the bound and published County NRCS Soil Survey Map - (required for projects within the Neuse River Basin, Tar-Pamlico River Basin, Randleman Lake Watershed and the Catawba River Basin, also recommended for all projects) - Please clearly delineate the site boundaries, etc. on the map. If the delineation obscures any of the features, it is recommended that a clean copy be provided. Copies of the Version 1.4 January 9, 2009 current soil survey and/or soil survey map sheets can be obtained from the local NRCS County Office (http://www.nc.nres.usda.gov/). GIS soil layers are not acceptable. [Vicinity map - Please clearly mark the location and approximate boundaries of the property and project on the map. Please indicate north arrow and scale. Please include applicable road names or State Road numbers. ED,fhe Site Plan - The most critical map to be provided is the site plan. You must provide full sized plans. The following is the minimum list of plans that are typically needed. ",Pre-construction/Pre-existing conditions - This sheet (or sheets) must include: • All jurisdictional and non-jurisdictional wetland, stream, water features, State regulated buffers (delineated into Zones 1 and 2) • Topographic contours with elevations • Any existing structures and impervious areas • Existing utility lines and easements • Existing roads, culverts, and other pertinent features • North arrow and the scale (1":50' scale is recommended). Proposed conditions - This sheet (or sheets) must include: • All jurisdictional and non-jurisdictional wetland, stream, water features, State regulated buffers (delineated into Zones 1 and 2) • Lot layout (if a subdivision or commercial development is proposed) - lots must be developable without further impacts to jurisdictional and non-jurisdictional wetlands streams, water features, and State regulated buffers. Building envelopes must be provided when streams, wetlands, riparian buffers, or water features exist on a lot • All built-out structures and impervious cover • Final grading contours with elevations • All utilities and easements (including septic fields on all lots within 100 feet of stream, wetland, or water features - if applicable) • Impacted areas - these should correspond with the Impact numbers listed on your PCN form. [D-15- rainage Plans - Final drainage plans must include the following: • Locations and pertinent elevations and sizes of the stormwater collection system and drainage ways • All inlets and outlets must also be shown with pertinent elevations (All outlets to wetlands must be at a non-erosive velocity, -generally less than 2 ft/sec during the peak flow from the 10-vr storm) • Scaled stormwater BMPs must also be indicated as required by DWQ rules and policies • In certain cases (see Section E of PCN form), final stormwater management plans must also be provided (see Stormwater Management Plan Checklist) ?roposed Impacts - All impacts to jurisdictional and non-jurisdictional wetland, stream, water features, and State regulated buffers must be shown and labeled on the site plans at a scale no smaller than 1" = 50'. All excavation, fill, flooding, stabilization, and other impacts that will be conducted in or near jurisdictional and non-jurisdictional wetland, stream, water features, and State regulated buffers must be indicated. Please provide cross sectional details showing the provisions for aquatic life passage (burial of culvert 20% for culverts <_ 48 inches, and 1-foot for culverts > 48 inches). Version 1.4 January 9, 2009 Wetland Impacts: Precise grading and final elevation contours must be provided. Existing vegetation and any clearing must be specified. All subsurface utility lines must indicate the location of anti-seep collars. Construction detail for anti-seep collars must be provided. Roadway or other crossings of riparian wetlands may require floodway culverts to maintain existing hydrological conditions. Plans should show that the hydrology of remaining wetlands on the site will be maintained. Stream Impacts: Stream impacts must be clearly shown on the plans. The centerline as well as the banks of the stream must be surveyed or located by GPS for the portion of the stream to be impacted. The inlet and the outlet of all culverts should be aligned with the stream as much as possible. Inlet and outlet elevations and streambed elevations should be indicated. Any inlet or outlet protection must be shown and enumerated on the impact map(s). 1?47 For bottomless culverts or other spans, a vertical cross section should be provided that shows the minimum distance from each span to each stream bank, the stream cross section, the height of the span above the stream and the minimum distance from the edge of each footer to each stream bank. Additionally, please provide a signed and sealed geotechnical report of subsurface soils at the proposed bottomless culvert location. The report must comply with the Division of Highways - Guidelines for Drainage Studies and Hydraulic Design, prepared by A.L. Hankins, Jr., State Hydraulics Engineer - 1999. Q-' Multiple culverts or sectioned box culverts typically require the use of sills, off- setting or other means to match the cross section of the existing stream (in order to maintain stream stability and provide aquatic life passage). A vertical cross section of the culverts should be shown overlain with the up and downstream stream cross section including the stream flood-prone area. Impacts associated with dam construction must indicate and enumerate all fill associated with the dam footprint, spillway and any bank stream bank stabilization. The length of stream impounded must also be indicated and enumerated. CAROLINA -- SHEET NUMBER 22 oD gu LwC\: ? i; L.C LwC2 VAP? C' ? ?j TerraServer Image Courtesy of the USGS Send To Printei Back To TerraServer Change to 11x17 Print Size ZUSGS 20 km NE of Raleigh, North Carolina, Page I of 1 Show Grid Lines Change to Landscape Bd States 01 Jul 1990 ?fe Image courtesy of the U.S. Geological Survey © 2004 Microsoft Corporation. Terms of Use Privacy Statement http://terraserver-usa.com/Printlmage.aspx?T=2&S=13&Z=17&X=453&Y=2486&W=2&... 1/12/2009 0' '1Km o' .SMi TerraServer Image Courtesy of the USGS Page 1 of 1 Send To Printer _ Back To TerraServer Change to 11x17 Print Size Show Grid Lines Change to Landscape $_.TE Image courtesy of the U.S. Geological Survey © 2004 Microsoft Corporation. Terms of Use Privacy Statement http://terraserver-usa.com/Printlmage.aspx?T=2&S=14&Z=17&X=228&Y=1243&W=2&... 1/12/2009 01 '2Km 0' 11Mi MPS B,ARTLETT ENGINEERING & SURVEYING, K 1906 Nash Street North Wilson, NC 27893-1726 Phone: (252) 399-0704 Fax: (252) 399-0804 ion@bartletteng.com February 4, 2010 NCDENR 401 Oversight/Express Review Permitting Unit 1650 Mail Service Center Raleigh, NC 27604 REFERENCE: ROLESVILLE MIDDLE SCHOOL- SOILS EVALUATION- ROLESVILLE, NC (WAKE COUNTY) INTRODUCTION: A preliminary evaluation of soils and site characteristics was performed by Jon L. Meade, PhD and Phil Hawley on January 20, 2010 to evaluate potential suitability for onsite stormwater control using a combination of a wet-detention pond and four bioretention areas. The soil series mapped for the location is Wo (Wehadkee and Bibb soils), DuB (Durham loamy sand) and ApB (Appling sandy loam). METHODS: Three soil sample bore holes (#l, #2, and #3) were performed for the detention pond and soils sample bore holes #4 through #7 were performed for each of the bioretention areas and locations are shown in Figure 1,2, and 3 with detailed information in Table 1. Soils are generally sandy to sandy loam at upper depths to sandy clay at deeper depths. CONCLUSIONS AND RECOMMENDATIONS: Based on site contours, the existing ground elevations for the detention pond range between 363' to 375' over the pond site. Soil layers were typically sandy to sandy clay and the estimated seasonal high water table was approximately 12" deep (Elevation approximately 363.5' to 365.5'). Due to the range of existing ground elevations and rock outcrops, further evaluation may be necessary to determine if a clay liner would be needed for the design permanent pool elevation of 370.0'. For the bioretention areas, seasonal high water table elevations were approximately 2-3 ft deep from existing ground elevations. The bottom of the planting media for bioretention areas were designed to be above the existing ground elevations which should be sufficiently above the SHWT. The planting media will all be fill material according to the design specifications. Underdrains were used for all bioretention areas. -2- February 4, 2010 If you have any questions or need additional information, please contact our office. Thank you. Sincerely, geering & Surveying Bartl;E i Robert S. Bartlett, PE Enclosure Page 1 of 2 WAKE COUNTY AND THE CITY OF RALEIGH -1"; " 1x?1K?1?I WAKE COUNTY Septic Points (layer in progress) No Y. /v. C ^ ? Interstates/Highways 17 / v Major Roads v Streets ¦ Lakes Parcels Soils Security Screen 2006 Color Orthos: Raleigh only 2005 Color Orthos: County wide 13 Wake County Boundary http://imaps.co.wake.nc.uslimapslpnntmap.asp?pin=&pinext=&minX=2153127.11192665... 2/4/2010 Copyright 2008. City of Raleigh, Wake County. 0 258 ft w J Q U U) 0 LO 0 z O a z O H z w w 0 Of w Q O U) U) z O Q U O J w J 0- 2 Q CO w J O w Of O m BORE SAMPLE LOCATIONS: BIORETENTION AREAS #3 AND #4 (SCALE 1:50) _I- ?I i I BIORETENTION AREA #3 TOP ELEV: 350.67' W J Q U 0 LO D Z O^ LL Z O H Z w F - w 0 w F- Q ct O H Z O H Q U O J w J Q Cn W Of O m TABLE 2: SOIL PROFILE DESCRIPTIONS LOCATION: BORE HOLE#1 (POND AREA) DEPTH " COLOR TEXTURE DESCRIPTION 0-6 10 YR 5/4 SANDY CRUMBLEY 6-18 2.5Y 5/4 SANDY CRUMBLEY WATER IN HOLE -12" DEEP 16-24 10 YR 5/4 SANDY CLAY 24-30 10YR 6/3 CLAYEY SAND CRUMBLEY 10YR 5/8 LIGHT REDOX STREAKS 30-36 10YR 6/3 SANDY CLAY 10YR 5/8 LIGHT REDOX STREAKS 10YR 5/2 IRON DEPLETIONS LOCATION: BORE HOLE#1A (Approx. 5 ft from Bore Hole#1) DEPTH " COLOR TEXTURE DESCRIPTION 0-6 2.5Y 5/4 SANDY LOAM 8-16 10 YR 5/4 SANDY CLAY 14-16 10 YR 5/4 SANDY CLAY WATER IN HOLE --15" DEEP 5YR 5/8 REDOX STREAKS Too wet to determine additional features EX GROUND ELEV=364.6' SHWT ELEV-363.6' LOCATION: BORE HOLE#2 (POND AREA) DEPTH " COLOR TEXTURE DESCRIPTION 0-8 10 YR 4/3 SANDY LOAM 10-15 10 YR 5/4 SANDY LOAM 5YR 5/8 REDOX STREAKS Hit rock-stopped test LOCATION: BORE HOLE#3 (POND AREA) DEPTH " COLOR TEXTURE DESCRIPTION 0-12 10 YR 4/3 SANDY LOAM 12-24 2.5Y 6/4 SANDY CLAY 24-29 2.5Y 5/4 SANDY CLAY 30-39 2.5Y 5/4 SANDY CLAY 2.5Y 5/8 REDOX STREAKS 40-48 2.5Y 6/4 SANDY CLAY 2.5Y 5/8 REDOX STREAKS EX GROUND ELEV=368.0' SHWT ELEV--364.5' LOCATION: BORE HOLE#4 (BIORETENTION AREA#4) DEPTH " COLOR TEXTURE DESCRIPTION 0-12 10 YR 5/3 SANDY LOAM 12-20 10 YR 6/6 SANDY LOAM 20-28 10 YR 6/6 SANDY CLAY 10 YR 5/8 REDOX STREAKS 10 YR 5/3 IRON DEPLETIONS EX GROU ND ELEV= 350.0' SHWT ELEV-348.0' LOCATION: BORE HOLE#5 (BIORETENTION AREA#3) DEPTH " COLOR TEXTURE DESCRIPTION 0-8 10 YR 5/4 SANDY LOAM 8-12 2.5Y 5/3 SANDY LOAM 12-24 2.5Y 6/4 SANDY CLAY 10 YR 5/8 REDOX STREAKS 10 YR 5/3 IRON DEPLETIONS EX GROUND ELEV=346.0' SHWT ELEV-344.0' LOCATION: BORE HOLE#6 (BIORETENTION AREA#1) DEPTH " COLOR TEXTURE DESCRIPTION 0-16 10 YR 5/3 SAND-SANDY LOAM 16-30 10YR 6/6 SANDY CLAY 30-32 10YR 6/6 CLAY 10 YR 7/2 IRON DEPLETIONS EX GROUND ELEV=365.0' SHWT ELEV-362.5' LOCATION: BORE HOLE#7 (BIORETENTION AREA#2) DEPTH " COLOR TEXTURE DESCRIPTION 0-12 10 YR 5/4 SANDY LOAM 12-18 10YR 6/4 LOAMY SAND 18-24 10YR 6/4 LOAMY SAND 10 YR 5/8 LIGHT REDOX STREAKS 24-32 10YR 5/3 LOAMY SAND 10YR 5/8 REDOX STREAKS EX GROUND ELEV=363'-364' SHWT ELEV-361.0' Official Series Description - APPLING Series LOCATION APPLING NC+AL GA SC VA Established Series Rev. AG, DTA 12/2005 APPLING SERIES Page 1 of 4 The Appling series consists of very deep, well drained, moderately permeable soils on ridges and side slopes of the Piedmont uplands. They are deep to saprolite and very deep to bedrock. They formed in residuum weathered from felsic igneous and metamorphic rocks of the Piedmont uplands. Slopes range from 0 to 25 percent. Near the type location, mean annual precipitation is 45 inches and mean annual temperature is 60 degrees F. TAXONOMIC CLASS: Fine, kaolinitic, thermic Typic Kanhapludults TYPICAL PEDON: Appling sandy loam, in a cultivated field. (Colors are for moist soil unless otherwise stated.) Ap--O to 6 inches; brown (IOYR 5/3) sandy loam; weak medium granular structure; very friable; common medium pores: common fine roots; about 10 percent angular quartz gravel; slightly acid; clear smooth boundary. (5 to 12 inches thick) E--6 to 9 inches: light yellowish brown (IOYR 6/4) sandy loam; weak medium granular structure; very friable; common medium pores; common fine roots; about 5 percent angular quartz gravel; slightly acid; clear smooth boundary. (0 to 5 inches thick) BE--9 to 12 inches; yellowish brown (1 OYR 5/6) sandy clay loam; weak medium subangular blocky structure; friable; few fine roots; few fine flakes of mica; strongly acid; gradual smooth boundary. (0 to 7 inches thick) Bt--12 to 48 inches; strong brown (7.5YR 5/6) clay; common medium distinct yellowish brown (IOYR 5/6) and prominent red (2.5YR 4/8) mottles; moderate medium subangular blocky structure; firm; sticky and plastic; few fine and medium roots; few distinct clay films on faces of peds; few fine flakes of mica; strongly acid; gradual wavy boundary. (Combined thickness of the Bt horizon is 24 to 50 inches) BC-48 to 53 inches; mottled red (2.5YR 4/8) and brownish yellow (IOYR 6/8) sandy clay loam; weak medium subangular blocky structure; friable; slightly sticky and slightly plastic; few fine and medium roots; few bodies of saprolite; common fine flakes of mica; strongly acid; gradual wavy boundary. (0 to 30 inches) C--53 to 80 inches; reddish yellow (7.5YR 7/6), red (2.5YR 4/8), and yellow (IOYR 8/6) sandy clay loam that weathered from saprolite; massive; friable; common fine flakes of mica; very strongly acid. TYPE LOCATION: Union County, North Carolina; about 1.8 miles west of Wesley Chapel on North Carolina Highway 84, about 2.2 miles north on Secondary Road 1338 to its intersection with Secondary Road 1358, about 250 feet northwest of the intersection, in a cultivated field; USGS Matthews topographic quadrangle; lat. 35 degrees 03 minutes 18 seconds N. and long. 80 degrees 43 minutes 25 http://www2.ftw.nres.usda.gov/osd/dat/A/APPLING.html 2/4/2010 Official Series Description - APPLING Series seconds W.. Page 2 of 4 RANGE IN CHARACTERISTICS: The Bt horizon is at least 24 to 50 inches thick and extends to 40 inches or more. Depth to bedrock ranges from 6 to 10 feet or more. The soil is very strongly acid or strongly acid throughout, unless limed. Limed soils typically are moderately acid or slightly acid in the upper part. Content of coarse fragments ranges from 0 to 35 percent by volume in the A and E horizons and 0 to 10 percent by volume in the Bt horizon. Fragments are dominantly gravel in size. Most pedons have few to common flakes of mica in the A and Bt horizons and few to many flakes of mica in the BC and C horizons. The A or Ap horizon has hue of 5YR to 2.5Y, value of 3 to 6, and chroma of 2 to 6. The A horizon is sandy loam, fine sandy loam, coarse sandy loam, loamy sand, loamy coarse sand, in the fine earth fraction. Eroded phases are sandy clay loam or clay loam in the fine earth fraction. The E horizon has hue of 5YR to 2.5Y, value of 4 to 6, and chroma of 4 to 6. It is sandy loam, fine sandy loam, coarse sandy loam, loamy sand, or loamy coarse sand in the fine earth fraction. The BA or BE horizon has hue of 5YR to l OYR, value of 5 or 6, and chroma of 3 to 8. It is sandy clay loam or sandy loam. The Bt horizon contains 35 to 60 percent clay and extends to depths of 30 to 60 inches. It has hue of 5YR to 2.5Y, value of 4 to 6, and chroma of 4 to 8. Pedons of 5YR hue have evident patterns of mottling in a subhorizon of the Bt horizon. Mottles in shades of red, yellow, and brown range from few to many throughout most pedons. The Bt horizon is sandy clay, clay loam, or clay with thin layers of sandy clay loam and contains less than 30 percent silt. The BC horizon has hue of 5YR to 2.5Y, value of the 4 to 7 and chroma of 4 to 8, or is mottled in these colors. BC horizons that have hue of 5YR have evident patterns of mottling. The BC horizon is clay loam, sandy clay loam, or sandy clay. The C horizon is similar in color to the BC horizon or is multicolored. It is saprolite weathered from felsic high-grade metamorphic or igneous rock that typically has a loamy texture. COMPETING SERIES: These are the Bethlehem, Cecil, Georgeville, Herndon, Madison, Nanford, Nankin, Pacolet, Saw, Tarrus, and Wedowee series in the same family. Those in closely related families are the Cataula, Chestatee, Cullen, Durham, Grover, Hard Labor, Helena, Hulett, Lloyd, Ma odan, Rion, and Vance series. Bethlehem soils have soft bedrock at depths of 20 to 40 inches and cola less than 40 inches thick. Cataula soils have a perched water table at 2 to 4 feet. Cecil soils have dominant hue of 5YR or redder; where hue is 5YR, evident patterns of mottling are absent in the Bt and BC horizon. Chestatee soils contain more than 15 percent, by volume, coarse fragments throughout. Cullen soils have more clay in the Bt horizon. Helena, Mayodan and Vance soils have mixed mineralogy, and in addition Helena soils have a perched water table at 1.5 to 2.5 feet and Mayodan soils formed in Triassic age sediments. Durham, Grover and Rion soils are fine-loamy. Georgeville, Herndon, Nanford, and Tarrus soils formed in Carolina slate and contain more than 30 percent silt. Hard Labor soils have a perched water table at 2.5 to 5 feet. Hulett, Madison, Pacolet and Wedowee soils have thinner Bt horizons, and, in addition Hulett and Madison soils contain more mica. Nankin soils formed from marine sedinments. Lloyd soils have at least one subhorizon in the Bt horizon that has moist value of 3. Saw soils have hard bedrock at depths of 20 to 40 inches. GEOGRAPHIC SETTING: Appling soils are on broad nearly level to gently sloping ridges and on http://www2.ftw.nres.usda.gov/osd/dat/A/APPLING.htm1 2/4/2010 Official Series Description - APPLING Series Page 3 of 4 sloping to moderately steep sides of ridges between intermittent and permanent streams in the southern Piedmont. Slopes are mostly from 2 to 10 percent but range from 0 to 15 percent. Appling soils formed in residuum weathered from felsic igneous and high-grade metamorphic rock. Near the type location, the mean annual precipitation is 45 inches and the mean annual air temperature is 60 degrees F. GEOGRAPHICALLY ASSOCIATED SOILS: In addition to the competing Cecil, Durham, Hard Labor, Helena, Pacolet, Rion, Vance and Wedowee series, these are Colfax, Louisburg, and Worsham series. Colfax soils are somewhat poorly drained to moderately well drained and have a fragipan. _ Louisburg soils contain less than 18 percent clay in the Bt horizon. Worsham soils are poorly drained and are around the heads of drains. DRAINAGE AND PERMEABILITY: Well drained; medium to rapid runoff, moderate permeability. USE AND VEGETATION: Most of the acreage is in cultivation or pasture and the remainder is in forests of mixed hardwoods and pine. Common crops are corn, tobacco, soybeans, cotton, and small grains. DISTRIBUTION AND EXTENT: The Piedmont of Alabama, Georgia, North Carolina, South Carolina, and Virginia. The series is of large extent. MLRA OFFICE RESPONSIBLE: Raleigh, North Carolina SERIES ESTABLISHED: Columbia County, Georgia; 1911. REMARKS: The June 1988 revision recognized low activity clay properties of this soil as defined in the Low Activity Clay Amendment to Soil Taxonomy, August, 1986 and changed the classification from Typic Hapludults to Typic Kanhapludults. The December 2005 revision changed the type location from a mesic region (Rockingham County, North Carolina) to a thermic region. Diagnostic horizons and features recognized in this pedon are: Ochric epipedon - the zone from the surface of the soil to a depth of 12 inches (Ap, E, and BE horizons) Kandic horizon - the zone between 12 and 48 inches has low activity clay in more than 50 percent of the horizon (Bt horizon) Argillic horizon - the zone between 12 and 48 inches (Bt horizon) ADDITIONAL DATA: Perkins, H.F. Southern Cooperative Series Bulletin 61, January, 1959, Virginia Agricultural Experiment Station, Blacksburg, Virginia. MLRA: 136 REVISED: 6/5/97-RLV; 12/30/2000-DTA TABULAR SERIES DATA: SOI-5 Soil Name Slope Airtemp FrFr/Seas Precip Elevation NCO032 APPLING 0- 25 58-65 185-240 37-69 350-900 http://www2.ftw.nres.usda.gov/osd/dat/A/APPLING.htmi 2/4/2010 Official Series Description - APPLING Series SOI-5 FloodL FloodH Watertable Kind Months Bedrock Hardness N00032 NONE >6.0 - >60 SOI-5 Depth Texture 3-Inch No-10 Clay% -CEC- N00032 0-9 FSL SL LS 0- 5 80-100 5-20 1- 5 N00032 0-9 GR-SL GR-SCL 5-15 55- 85 5-30 2- 6 N00032 0-9 SCL CL 0- 5 85-100 20-35 5- 10 N00032 9-12 SCL, SL 0- 5 90-100 20-35 5- 10 N00032 12-48 SC CL C 0- 5 90-100 35-60 3- 12 N00032 48-53 SC CL SCL 0- 5 85-100 20-45 2- 8 N00032 53-80 VAR - - - - SOI-5 Depth -pH- O.M. Salin Permeab Shnk-Swll N00032 0-9 4.5-6.5 .5-2. 0-0 2.0- 6.0 LOW N00032 0-9 4.5-6.5 .5-2. 0-0 2.0- 6.0 LOW N00032 0-9 4.5-6.5 .5-1. 0-0 0.6- 2.0 LOW NCO032 9-12 4.5-6.5 0.-.5 0-0 0.6-2.0 LOW N00032 12-48 4.5-5.5 0.-.5 0-0 0.6- 2.0 LOW N00032 48-53 4.5-5.5 0.-.5 0-0 0.6- 2.0 LOW N00032 53-80 - - - - National Cooperative Soil Survey U.S.A. http://www2.ftw.nres.usda.gov/osd/dat/A/APPLING.htmI Page 4 of 4 2/4/2010 Official Series Description - DURHAM Series LOCATION DURHAM NC+AL GA SC VA Established Series Rev. JWC:REH 07/1999 DURHAM SERIES The Durham series consists of deep, well drained moderately permeable soils formed in loamy residuum from acid crystalline rock. They are nearly level to sloping soils on broad ridges of the Piedmont. TAXONOMIC CLASS: Fine-loamy, siliceous, semiactive, thermic Typic Hapludults Page I of 4 TYPICAL PEDON: Durham loamy sand--cultivated. (Colors are for moist soil unless otherwise stated.) Ap--O to 8 inches; light brownish gray (1 OYR 6/2) loamy sand; weak coarse granular structure; very friable; medium acid; clear smooth boundary. (6 to 10 inches thick) BA1--8 to 13 inches; pale brown (l OYR 6/3) loamy sand; weak coarse granular structure; very friable; strongly acid; clear smooth boundary. (4 to 10 inches thick) BA2--13 to 16 inches; pale brown (l OYR 6/3) sandy loam; weak medium granular structure; friable, slightly brittle; strongly acid; clear smooth boundary. (0 to 4 inches thick) Bt1--16 to 25 inches; brownish yellow (IOYR 6/6) sandy clay loam; moderate medium subangular blocky structure; friable, slightly sticky, slightly plastic; thin continuous clay films; strongly acid; clear smooth boundary. (8 to 10 inches thick) Bt2--25 to 36 inches; yellowish brown (1 OYR 5/8) heavy sandy clay loam, few fine and medium distinct (7.5YR 5/6) strong brown and yellowish red (5YR 4/6) mottles; moderate medium subangular blocky structure; friable, slightly sticky, slightly plastic; thin continuous clay films; strongly acid; gradual smooth boundary. (10 to 14 inches thick) Bt3--36 to 42 inches; mottled yellowish brown (IOYR 5/8), strong brown (7.6YR 5/8), and yellowish red (5YR 5/8) sandy clay loam; weak medium subangular blocky structure; friable, slightly sticky, slightly plastic; thin patchy clay films on vertical faces of peds; few fine flakes of mica; strongly acid; gradual wavy boundary. (0 to 8 inches thick) BC--42 to 48 inches; mottled yellowish brown (1 OYR 5/4), strong brown (7.5YR 5/6), and yellowish red (5YR 5/8) sandy clay loam; weak medium subangular blocky structure; friable; few fine flakes of mica; few bodies of sandy loam; strongly acid; gradual http://www2.ftw.nres.usda.gov/osd/dat/D/DURBAM.htm] 2/4/2010 Official Series Description - DURHAM Series wavy boundary. (5 to 12 inches thick) Page 2 of 4 C-48 to 60 inches; mottled yellow, yellowish red, and pale brown saprolite that crushes to sandy loam; rock structure; friable; strongly acid. TYPE LOCATION: Wake County, North Carolina; five miles south of Rolesville, North Carolina, on county road 2227, 1/4 mile east of Bethany Baptist Church at junction of county road 1003; 50 feet north of road in cultivated field. RANGE IN CHARACTERISTICS: The thickness of the loamy horizons over saprolite range from 40 to more than 60 inches below the surface. Depth to bedrock is more than 5 feet. Coarse fragments range from 0 to 5 percent throughout. The soil is strongly acid or very strongly acid except where the surface has been limed. The A or Ap horizons have hues of 7.5YR, l OYR, and 2.5Y, value of 4 to 6, and chroma of 1 to 3. The BA horizon as hue of l OYR and 2.5Y, value of 6 to 8, chroma of l to 4. The A horizon is loamy coarse sand, loamy sand, sandy loam, or fine sandy loam. Where present, BA and BE horizons of sandy loam are pale brown, brownish yellow, brown, or light yellowish brown. The Bt horizon has hue of 7.5YR, l OYR, or 2.5Y, value of 5 to 8, and chrorna of 4 to 8. It has few to common reddish, brownish, or yellowish mottles. Mottles in chroma of 2 or less are below the upper 20 inches of the Bt horizon. It is sandy clay loam or clay loam. Some pedons have lower Bt horizon of sandy clay, but the textural control section averages less than 35 percent clay. The BC horizon is similar in color to the Bt horizon except where the mottles are more contrasting. It is sandy loam, sandy clay loam, or clay loam. The B3 horizon contains weatherable minerals such as mica and feldspar. The C horizon is mottled or varicolored saprolite of acid crystalline rock. It is sandy loam or loamy sand. COMPETING SERIES: These are the Apison, Cahab_a, Cowarts, Emporia, Euharlee, Granville, Hartsells, Kempsville, Linker, Marvyn, Nauv_oo, Nectar, Pirum, Spadra, and Suffolk_ series. Apison, Hartsells, Linker, and Pirum soils have bedrock at depths less than 40 inches. Cahaba, Nauvoo, and Nectar soils have redder hue. Cowarts, Emporia, Kempsville, Marvyn, Spadra, and Suffolk soils lack weatherable minerals in the lower solum and have C horizons of Coastal Plain or old alluvial sediments. Euharlee soils contain more silt. Granville soils are higher in exchangeable aluminum. GEOGRAPHIC SETTING: Durham soils are on nearly level to sloping Piedmont uplands. Slopes are commonly 2 to 5 percent and range http://www2.ftw.nres.usda.gov/osd/dat/D/DURBAM.html 2/4/2010 Official Series Description - DURHAM Series Page 3 of 4 from 0 to 10 percent. Durham soils formed in residuum weathered from acid crystalline rocks, chiefly granite and gneiss. Mean annual precipitation is about 47 inches and the mean annual temperature is about 60 degrees F. near the type location. GEOGRAPHICALLY ASSOCIATED SOILS: These are the Appling, Cecil, Helena, Louisburg, Pacolet, Vance, Wedowee, and Worsham series. Appling, Cecil, Helena, Pacolet, Vance, Wedowee, and Worsham soils contain more clay and Louisburg soils contain less clay. Helena and Worsham soils have mottles with chroma 2 or less in the upper 20 inches of the control section and occupy lower positions on the landscape. DRAINAGE AND PERMEABILITY: Well drained; medium runoff; moderate permeability in upper subsoil and moderately slow permeability in lower subsoil. USE AND VEGETATION: About two thirds of the total acreage is in cultivation or pasture. The remainder is in mixed hardwood and pine. Common crops grown are corn, soybeans, tobaco, cotton, small grain, and vegetables. Native tree species include loblolly pine, short leaf pine, Viginia pine, sweetgum, whiteoak, red oak, post oak, hickory, and yellow-poplar. Understory species include flowering dogwood, persimmon, sourwood, red maple, eastern redbud, eastern redcedar, and common sassafras DISTRIBUTION AND EXTENT: Piedmont of North Carolina, Alabama, Georgia, South Carolina, and Virginia. The series is of moderate extent. MLRA OFFICE RESPONSIBLE: Raleigh, North Carolina SERIES ESTABLISHED: Raleigh to New Bern Area, North Carolina, 1900. REMARKS: Durham soils were formerly placed in the Red-Yellow Podzolic great soil group. They ranged in texture of the B horizon from moderately-fine to fine, and in drainage from well drained to moderately well drained. This revision restricts the texture of the argillic horizon to fine-loamy and the drainage class to well drained. TABULAR SERIES DATA: SOI-5 Soil Name Slope Airtemp FrFr/Seas Precip Elevation N00070 DURHAM 0- 10 58- 65 185-240 40- 60 350- 600 NCO123 DURHAM 0- 10 58- 65 185-240 40- 60 350- 600 SOI-5 F1oodL F1oodH Watertable Kind Months Bedrock Hardness N00070 NONE 6.0-6.0 - 60-60 NCO123 NONE 4.0-6.0 PERCHED DEC-MAR 60-60 SOI-5 Depth Texture 3-Inch No-10 Clay% -CEC- NC0070 0-16 LCOS LS 0- 3 90-100 2-10 1- 3 N00070 0-16 SL FSL 0- 3 90-100 5-20 1- 4 NCO070 16-36 SCL CL 0- 3 90-100 18-35 2- 4 NCO070 36-42 CL SC SCL 0- 3 90-100 25-45 3- 5 N00070 42-48 SCL SL 0- 3 90-100 8-30 1- 4 NCO070 48-60 LS SL SCL 0- 3 85-100 5-20 1- 3 http://www2.ftw.nres.usda.gov/osd/dat/D/DURHAM.html 2/4/2010 Official Series Description - DURHAM Series NCO123 0-16 LCOS LS 0- 3 90-100 2-10 1- 3 NCO123 0-16 SL FSL 0- 3 90 -100 5-20 1- 4 NCO123 16-36 SCL CL 0- 3 90 -100 18-35 2- 4 NCO123 36-42 CL SC 0- 3 90 -100 25-45 3- 5 NCO123 42-48 SCL SL 0- 3 90 -100 8-30 1- 4 NCO123 48-60 LS SL SCL 0- 3 85 -100 5-20 1- 3 SOI-5 Depth -pH- O.M. Salin Permeab Shnk-Swll NCO070 0-16 4.5- 6.0 .5- 2. 0- 0 2.0- 6.0 LOW N00070 0-16 4.5- 6.0 .5-2. 0- 0 2.0- 6.0 LOW NCO070 16-36 4.5- 5.5 0.- .5 0- 0 0.6- 2.0 LOW N00070 36-42 4.5- 5.5 0.-.5 0- 0 0.2- 0.6 LOW N00070 42-48 4.5- 5.5 0.- .5 0- 0 0.6- 2.0 LOW N00070 48-60 4.5- 5.5 0.- .5 0- 0 0.6- 2.0 LOW NCO123 0-16 4.5- 6.0 .5- 2. 0- 0 2.0- 6.0 LOW NCO123 0-16 4.5- 6.0 .5- 2. 0- 0 2.0- 6.0 LOW NCO123 16-36 4.5- 5.5 0.- .5 0- 0 0.6- 2.0 LOW NCO123 36-42 4.5- 5.5 0.- .5 0- 0 0.2- 0.6 LOW NCO123 42-48 4.5- 5.5 0.- .5 0- 0 0.6- 2.0 LOW NCO123 48-60 4.5- 5.5 0.-.5 0- 0 0.6- 2.0 LOW Page 4 of 4 National Cooperative Soil Survey U.S.A. http://www2.ftw.nres.usda.gov/osd/dat/D/DUF-HAM.html 2/4/2010 Official Series Description - WEHADKEE Series LOCATION WEHADKEE NC+AL GA SC TN VA Established Series Rev. RM:AG 07/2007 WEHADK d SERIES Page] of 3 The Wehadkee series consists of very deep, poorly drained and very poorly drained soils on flood plains along streams that drain from the mountains and piedmont. They are formed in loamy sediments. Slopes range from 0 to 2 percent. Near the type location, mean annual precipitation is about 48 inches, and mean annual temperature is about 60 degrees F. TAXONOMIC CLASS: Fine-loamy, mixed, active, nonacid, thermic Fluvaquentic Endoaquepts TYPICAL PEDON: Wehadkee fine sandy loam -- cultivated (Colors are for moist soil unless otherwise stated.) Ap--O to 8 inches; grayish brown (IOYR 5/2) fine sandy loam; weak medium granular structure; very friable; few flakes of mica; moderately acid; abrupt smooth boundary. (6 to 14 inches thick) Bgl--8 to 17 inches; dark gray (IOYR 4/1) loam; common medium prominent strong brown (7.5YR 5/6) soft masses of iron accumulation; weak fine and medium subangular blocky structure; friable; few flakes of mica; moderately acid; clear smooth boundary. (8 to 20 inches thick) Bg2--17 to 40 inches; gray (IOYR 6/1) sandy clay loam; common medium prominent strong brown (7.5YR 5/6) soft masses of iron accumulation; weak medium subangular blocky structure; friable; common flakes of mica; moderately acid; clear smooth boundary. ( 0 to 30 inches thick) Cg--40 to 50 inches; gray (IOYR 6/1) sandy loam; common medium faint grayish brown (IOYR 5/2) iron depletions and prominent strong brown (7.5YR 5/6) soft masses of iron accumulation; massive; friable; common flakes of mica; moderately acid. TYPE LOCATION: Catawba County, North Carolina; 1/2 mile south of Witherspoon Crossroads on SR 1801, 3/4 mile east on SR 1807, and 650 feet north of bridge on Hogan Creek. RANGE IN CHARACTERISTICS: Solum thickness ranges from about 20 to more than 60 inches. The content of mica flakes ranges from few to many. The soil ranges from very strongly acid through neutral, but some part of the 10 to 40 inch control section is moderately acid through neutral. Content of rock fragments ranges from 0 to 5 percent by volume in the A and B horizons, and from 0 to 20 percent by volume in the C horizons. Fragments are dominantly pebbles in size. The Ap or A horizon has hue of l OYR or 2.5Y or is neutral, value of 3 to 6, and chroma of 0 to 4. Some pedons have soft masses of iron accumulation in shades of brown or red. Texture is fine sandy loam, very fine sandy loam, loam, silty clay loam, sandy loam, or silt loam. Some pedons have recent layers of overwash as much as 20 inches thick that are loamy and variable in color. Many pedons have an Ab horizon that has the same color and texture range as the A horizon. http://www2.ftw.nres.usda.gov/osd/dat/W/WEHADKEE.html 2/4/2010 Official Series Description - WEHADKEE Series Page 2 of 3 The Bg horizon has hue of l OYR to 5Y or is neutral, value of 4 to 6, and chroma of 0 to 2. Soft masses of iron accumulation are in shades of red, yellow, and brown. Texture is sandy clay loam, silt loam, loam, clay loam, or silty clay loam. The Cg horizon has hue of l OYR to 5Y or is neutral, value of 4 to 7, and chroma of 0 to 2. Soft masses of iron accumulation are in shades of brown, red, and yellow. Texture is commonly sandy loam, loam, or silt loam, but in some pedons the Cg horizon contains stratified layers of sandy clay loam, clay loam, silty clay loam, loamy sand, sand, and gravel. Sandy textures are restricted to depths below 40 inches. COMPETING SERIES: There are no other known series in this family. Series in closely related families are Bibb, Chastain, Chewacla, Chowan, Englehard, Hatboro, Kinston, Lee, Mantachie, Mhoon, Muckalee, Rosebloom, and Una series. Bibb and Muckalee soils are coarse-loamy with siliceous mineralogy. Bibb soils have reaction of strongly acid or more acid throughout the control section. Chastain and Una soils are clayey and reaction is strongly acid or more acid throughout the control section. Chewacla soils have dominant chroma of more than 2 in the upper 20 inches of the soil. Chewacla soils are Fluvaquentic Dystrochrepts. Chowan, Mhoon, and Rosebloom soils are fine-silty. The subgroup for Chowan is Thapto-Histic. Englehard soils are coarse-silty and their subgroup is Humaqueptic. Hatboro soils are mesic. Kinston and Lee soils have siliceous mineralogy and reaction is strongly acid or more acid throughout the control section. Mantachie soils have siliceous mineralogy and reaction is strongly acid or more acid throughout the control section. GEOGRAPHIC SETTING: Wehadkee soils occur on flood plains, along streams that drain from the mountains and piedmont. Slopes are generally less than 2 percent. Wehadkee soils formed in loamy sediments washed from soils that formed from schist, gneiss, granite, phyllite, and other metamorphic and igneous rocks. Mean annual precipitation is about 48 inches near the type location and mean annual temperature is about 60 degrees F. Mean annual precipitation ranges from 37 to 69 inches, and mean annual air temperature ranges from 58 to 68 degrees F. GEOGRAPHICALLY ASSOCIATED SOILS: These are the competing Chewacla series and Altavista, Augusta, Buncombe, Con aree, Riverview, Roanoke, State, and Wickham series. Altavista, Augusta, Roanoke, State, and Wickham soils are on terraces and have argillic horizons. Buncombe soils are on flood plains typically beside stream channels and are sandy and excessively drained. Chewacla soils are on flood plain positions that are higher or nearer to stream channels and are somewhat poorly drained. Congaree and Riverview soils are on flood plains adjacent or near stream channels and are better drained. DRAINAGE AND PERMEABILITY: Poorly drained and very poorly drained. Runoff is very slow and internal drainage is very slow. Permeability is moderate. Most areas are frequently flooded. USE AND VEGETATION: Most of the area is in forest; chiefly water tolerant hardwoods such as sweetgum, blackgum, water oak, willow, oak, poplar, hickories, beech, and elm. Drained areas are used for pasture, corn, and hay. DISTRIBUTION AND EXTENT: Alabama, Arkansas, Florida, Georgia, Mississippi, North Carolina, South Carolina, Tennessee, and Virginia. The soil is of moderate extent. MLRA OFFICE RESPONSIBLE: Raleigh, North Carolina SERIES ESTABLISHED: Johnston County, North Carolina; 1911. http://www2.ftw.nres.usda.gov/osd/dat/W/WEHADKEE.htmi 2/4/2010 Official Series Description - WEHADKEE Series Page 3 of 3 REMARKS: Diagnostic horizons and features recognized in this pedon are: Ochric epipedon - The zone from 0 to 8 inches (Ap horizon) Irregular decrease in organic carbon with depth Aquic conditions - redoximorphic features associated with wetness in the zone from 8 to 50 inches (Bgl, Bg2, and Cg horizons) MLRA = 133A, 133B, 136,153A, 153B REVISED = 10/2000 KSL ADDITIONAL DATA: SOI-5 Soil Name Slope Airtemp FrFr/Seas Precip Elevation N00052 WEHADKEE 0- 2 58- 68 185-250 37- 69 5- 700 NC0233 WEHADKEE 0- 2 58- 68 185-250 37- 69 5- 700 SOI-5 FloodL F1oodH Watertable Kind Months Bedrock Hardness N00052 COMMON 0-1.0 APPARENT NOV-MAY 60-60 NC0233 COMMON - APPARENT - 60-60 SOI-5 Depth Texture 3-Inch No-10 Clay% -CEC- N00052 0- 8 FSL L SL 0- 0 95-100 5-20 5- 20 N00052 0- 8 SIL SICL 0- 0 98-100 6-40 5- 35 N00052 8-40 SICL L SCL 0- 0 99-100 18-35 5- 25 N00052 40-50 VAR - - - - NC0233 0- 8 FSL L SL 0- 0 95-100 5-20 3- 9 NC0233 0- 8 SIL SICL 0- 0 95-100 6-40 3- 12 NC0233 8-40 SIL SICL VFSL 0- 0 95-100 18-35 4- 9 NC0233 40-50 VAR - - - - SOI-5 Depth -pH - O.M. Salin Permeab Shnk-Swll N00052 0- 8 4.5- 6.5 2.-5.0- 0 2.0- 6.0 LOW N00052 0- 8 4.5- 6.5 2.-5. 0- 0 0.6- 2.0 LOW N00052 8-40 4.5- 6.5 0.-2. 0- 0 0.6- 2.0 LOW N00052 40-50 - - - - NC0233 0- 8 4.5- 6.5 2.-5. 0- 0 2.0- 6.0 LOW NC0233 0- 8 4.5- 6.5 2.-5. 0- 0 0.6- 2.0 LOW NC0233 8-40 4.5- 6.5 0.-2. 0- 0 0.6- 2.0 LOW NC0233 40-50 -- -- National Cooperative Soil Survey U.S.A. http://www2.ftw.nres.usda.gov/osd/dat/W/WEHADKEE.html 2/4/2010 ROLESVILLE M.S. (M6) Rolesville, NC Wake County STORMWATER PRELIMINARY CALCULATIONS February 4, 2010 'I b 20106 ? '•n•FNGINE??'' .?: ??lIISIIIIItl13t11P??````` 0 BARTLETT e mrNC, Pc 1906 Nash Street North Wilson, NC 27893-1726 Phone: (252) 399-0704 Fax: (252) 399-0804 Robert?kbartletteng com Permit Number: (to be provided by DWQ) op WArF9 HMENR STORMWATER MANAGEMENT PERMIT APPLICATION FORM 401 CERTIFICATION APPLICATION FORM BIORETENTION CELL SUPPLEMENT This form must be filled out, printed and submitted. The Required Items Checklist (Part lll) must be printed, filled out and submitted along with all of the required information. I. PROJECT INFORMATION Project name Rolesville Middle School Contact name Jon Meade Phone number 252-399-0704 Date January 28, 2010 Drainage area number Bioretention#1 11. DESIGN INFORMATION Site Characteristics Drainage area 94,337 ft2 Impervious area 67,677 ft2 Percent impervious 71.7% % Design rainfall depth 1.0 inch Peak Flow Calculations Is pre/post control of the 1-yr, 24-hr peak flow required? N (Y or N) 1-yr, 24-hr runoff depth 2.91 in 1-yr, 24-hr intensity 5.04 in/hr Pre-development 1-yr, 24-hr peak flow 4.374 ft'/sec Post-development 1-yr, 24-hr peak flow 8.203 ft3/sec Pre/Post 1-yr, 24-hr peak control 3.829 fl3/sec Storage Volume: Non-SA Waters Minimum volume required 5,469.0 ft3 Volume provided 5,760.0 ft3 OK Storage Volume: SA Waters 1.5" runoff volume ft3 Pre-development 1-yr, 24-hr runoff ft3 Post-development 1-yr, 24-hr runoff fl3 Minimum volume required 0 ft3 Volume provided ft3 Cell Dimensions Ponding depth of water Ponding depth of water Surface area of the top of the bioretention cell Length: Width: -or- Radius 12 inches 1.00 ft 6,448.0 ft2 179 ft 41 ft ft OK Media and Soils Summary Drawdown time, ponded volume Drawdown time, to 24 inches below surface Drawdown time, total: In-situ soil: Soil permeability Planting media soil: Soil permeability Soil composition % Sand (by weight) % Fines (by weight) % Organic (by weight) Phosphorus Index (P-Index) of media Form SW401-Bioretention-Rev.8 July 30, 2009 OK OK OK 8 hr OK 24 hr OK 32 hr in/hr 1.50 in/hr OK 87% OK 10% OK 3% OK Total: 100% 10 (unitless) OK Parts I and II. Design Summary, Page 1 of 2 Permit Number: (to be provided by DWQ) Basin Elevations Temporary pool elevation Type of bioretention cell (answer "Y" to only one of the two following questions): Is this a grassed cell? Is this a cell with trees/shrubs? Planting elevation (top of the mulch or grass sod layer) Depth of mulch Bottom of the planting media soil Planting media depth Depth of washed sand below planting media soil Are underdrains being installed? How many clean out pipes are being installed? What factor of safety is used for sizing the underdrains? (See BMP Manual Section 12.3.6) Additional distance between the bottom of the planting media and the bottom of the cell to account for underdrains Bottom of the cell required SHWT elevation Distance from bottom to SHWT Internal Water Storage Zone (IWS) Does the design include IWS Elevation of the top of the upturned elbow Separation of IWS and Surface Planting Plan Number of tree species Number of shrub species Number of herbaceous groundcover species Additional Information Does volume in excess of the design volume bypass the bioretention cell? Does volume in excess of the design volume flow evenly distribute( through a vegetated filter? What is the length of the vegetated filter? Does the design use a level spreader to evenly distribute flow? Is the BMP located at least 30 feet from surface waters (50 feet if SA waters)? Is the BMP located at least 100 feet from water supply wells? Are the vegetated side slopes equal to or less than 3:1? Is the BMP located in a proposed drainage easement with access to a public Right of Way (ROW)? Inlet velocity (from treatment system) Is the area surrounding the cell likely to undergo development in the future? Are the slopes draining to the bioretention cell greater than 20%? Is the drainage area permanently stabilized? Pretreatment Used (Indicate Type Used with an "X" in the shaded cell) Gravel and grass (8inches gravel followed by 3-5 ft of grass) Grassed Swale Forebay Other 370.00 fmsl Y AI -(Y or N) _(Y or N) 369 fmsl 0 inches 367 fmsl 2ft 0.33 ff OK Insufficient mulch depth, unless installing grassed cell. Y (Y or N) 7 OK 10 OK 1ft 365.67 fmsl 362.5 fmsl 3.17 ft OK N (Y or N) fmsl 369 ft 0 Y (Y or N) OK Y (Y or N) OK 56 ft N (Y or N) Show how flow is evenly distributed. Y (Y or N) Y (Y or N) Y (Y or N) Y (Y or N) 7.01 ft/sec N (Y or N) N (Y or N) Y (Y or N) vwaiPawi Pau OK OK OK OK Insufficient inlet velocity unless energy dissipating devices are being used. OK OK OK #VALUE! Form SW401-Bioretention-Rev.8 July 30, 2009 Parts I and II. Design Summary, Page 2 of 2 Permit Number: (to be provided by DWQ) o?OF W ATE9OG A ? WDENR ° STORMWATER MANAGEMENT PERMIT APPLICATION FORM 401 CERTIFICATION APPLICATION FORM BIORETENTION CELL SUPPLEMENT This form must be filled out, printed and submitted. The Required Items Checklist (Part III) must be printed, filled out and submitted along with all of the required information. I. PROJECT INFORMATION Project name Rolesville Middle School Contact name Jon Meade Phone number 252-399-0704 Date January 28, 2010 Drainage area number Bioretention#2 II. DESIGN INFORMATION Site Characteristics Drainage area 94,338 ft2 Impervious area 59,241 ft2 Percent impervious 62.8% % Design rainfall depth 1.0 inch Peak Flow Calculations Is pre/post control of the 1-yr, 24-hr peak flow required? N (Y or N) 1-yr, 24-hr runoff depth 2.91 in 1-yr, 24-hr intensity 5.04 in/hr Pre-development 1-yr, 24-hr peak flow 4.366 ft'/sec Post-development 1-yr, 24-hr peak flow 8.186 ft'/sec Pre/Post 1-yr, 24-hr peak control 3.820 ft'/sec Storage Volume: Non-SA Waters Minimum volume required 4,836.0 ft' Volume provided 4,879.0 ft3 OK Storage Volume: SA Waters 1.5" runoff volume ft3 Pre-development 1-yr, 24-hr runoff ft3 Post-development 1-yr, 24-hr runoff ft3 Minimum volume required 0 ft3 Volume provided ft3 Cell Dimensions Ponding depth of water 12 inches OK Ponding depth of water 1.00 It Surface area of the top of the bioretention cell 5,522.0 ft2 OK Length: 215 ft OK Width: 32 ft OK -or- Radius It Media and Soils Summary Drawdown time, ponded volume 8 hr OK Drawdown time, to 24 inches below surface 24 hr OK Drawdown time, total: 32 hr In-situ soil. Soil permeability NA in/hr OK Planting media soil: Soil permeability 1.50 in/hr OK Soil composition % Sand (by weight) 87% OK % Fines (by weight) 10% OK % Organic (by weight) T.I. OK Total: 100% Phosphorus Index (P-Index) of media 10 (unitless) OK Form SW401-Bioretention-Rev.8 July 30, 2009 Parts I and II. Design Summary, Page 1 of 2 Permit Number: (to be provided by DWQ) Basin Elevations Temporary pool elevation 367.40 fmsl Type of bioretention cell (answer "Y" to only one of the two following questions): Is this a grassed cell? Y (Y or N) OK Is this a cell with trees/shrubs? (Y or N) Planting elevation (top of the mulch or grass sod layer) 366.4 fmsl Depth of mulch 0 inches Insufficient mulch depth, unless installing grassed cell. Bottom of the planting media soil 364.4 fmsl Planting media depth 2 It Depth of washed sand below planting media soil 0.33 It Are underdrains being installed? Y (Y or N) How many clean out pipes are being installed? 6 OK What factor of safety is used for sizing the underdrains? (See BMP Manual Section 12.3.6) 10 OK Additional distance between the bottom of the planting media and the bottom of the cell to account for underdrains 1 ft Bottom of the cell required 363.07 fmsl SHWT elevation 361 fmsl Distance from bottom to SHWT 2.07 It OK Internal Water Storage Zone (IWS) Does the design include IWS Y (Y or N) Elevation of the top of the upturned elbow fmsl Separation of IWS and Surface 366.4 ft Planting Plan Number of tree species 0 Number of shrub species Number of herbaceous groundcover species Additional Information Does volume in excess of the design volume bypass the bioretention cell? Y Y or N) ( ) OK Does volume in excess of the design volume flow evenly distributed through a vegetated filter? Y (Y or N) OK What is the length of the vegetated filter? 50 ft Does the design use a level spreader to evenly distribute flow? N (Y or N) Show how flow is evenly distributed. Is the BMP located at least 30 feet from surface waters (50 feet if SA waters)? Y (Y or N) OK Is the BMP located at least 100 feet from water supply wells? Y (Y or N) OK Are the vegetated side slopes equal to or less than 3:1? Y (Y or N) OK Is the BMP located in a proposed drainage easement with access to a public Right of Way (ROW)? Y (Y or N) OK Inlet velocity (from treatment system) 5.41 ft/sec Insufficient inlet velocity unless energy dissipating devices are being used. Is the area surrounding the cell likely to undergo development in the future? N Y or N) ( ) OK Are the slopes draining to the bioretention cell greater than 20%? N (Y or N) OK Is the drainage area permanently stabilized? Y (Y or N) OK Pretreatment Used (Indicate Type Used with an "X" in the shaded cell) Gravel and grass (flinches gravel followed by 3-5 ft of grass) Grassed swale #VALUE! Forebay Other Dissipator Pad Form SW401-Bioretention-Rev.8 July 30, 2009 Parts I and II. Design Summary, Page 2 of 2 Permit Number: (to be provided by DWp) AT M_ A NCDENR O??F WATF9oG > -i o STORMWATER MANAGEMENT PERMIT APPLICATION FORM 401 CERTIFICATION APPLICATION FORM BIORETENTION CELL SUPPLEMENT This form must be filled out, printed and submitted. The Required Items Checklist (Part III) must be printed, filled out and submitted along with all of the required information. 1. PROJECT INFORMATION Project name Rolesville Middle School Contact name Jon Meade Phone number 252-399-0704 Date January 28, 2010 Drainage area number Bioretention#3 Ill. DESIGN INFORMATION Site Characteristics Drainage area 43,386 ft2 Impervious area 24,394 ft2 Percent impervious 56.2% % Design rainfall depth 1.0 inch Peak Flow Calculations Is pre/post control of the 1-yr, 24-hr peak flow required? N (Y or N) 1-yr, 24-hr runoff depth 2.91 in 1-yr, 24-hr intensity 5.04 in/hr Pre-development 1-yr, 24-hr peak flow 2.008 ft3/SeC Post-development 1-yr, 24-hr peak flow 3.263 ft3/sec Pre/Post 1-yr, 24-hr peak control 1.255 ft3/sec Storage Volume: Non-SA Waters Minimum volume required 2,010.0 ft3 Volume provided 2,054.0 ft3 OK Storage Volume: SA Waters 1.5" runoff volume ft3 Pre-development 1-yr, 24-hr runoff ft3 Post-development 1-yr, 24-hr runoff ft3 Minimum volume required 0 ft3 Volume provided ft3 Cell Dimensions Ponding depth of water 12 inches OK Ponding depth of water 1.00 ft Surface area of the top of the bioretention cell 2,472.0 ft2 OK Length: 118 ft OK Width: 21 ft OK -or- Radius ft Media and Soils Summary Drawdown time, ponded volume 8 hr OK Drawdown time, to 24 inches below surface 24 hr OK Drawdown time, total: 32 hr In-situ soil: Soil permeability NA in/hr OK Planting media soil: Soil permeability 1.50 in/hr OK Soil composition % Sand (by weight) 87% OK % Fines (by weight) 10% OK % Organic (by weight) 3% OK Total: 100% Phosphorus Index (P-Index) of media 10 (unitless) OK Form SW401-Bioretention-Rev.8 July 30, 2009 Parts I and II. Design Summary, Page 1 of 2 Permit Number: (to be provided by DWQ) Basin Elevations Temporary pool elevation Type of bioretention cell (answer "Y" to only one of the two following questions): Is this a grassed cell? Is this a cell with trees/shrubs? Planting elevation (top of the mulch or grass sod layer) Depth of mulch Bottom of the planting media soil Planting media depth Depth of washed sand below planting media soil Are underdrains being installed? How many clean out pipes are being installed? What factor of safety is used for sizing the underdrains? (See BMP Manual Section 12.3.6) Additional distance between the bottom of the planting media and the bottom of the cell to account for underdrains Bottom of the cell required SHWT elevation Distance from bottom to SHWT Internal Water Storage Zone (IWS) Does the design include IWS Elevation of the top of the upturned elbow Separation of IWS and Surface Planting Plan Number of tree species Number of shrub species Number of herbaceous groundcover species Additional Information Does volume in excess of the design volume bypass the bioretention cell? Does volume in excess of the design volume flow evenly distributed through a vegetated filter? What is the length of the vegetated filter? Does the design use a level spreader to evenly distribute flow? Is the BMP located at least 30 feet from surface waters (50 feet if SA waters)? Is the BMP located at least 100 feet from water supply wells? Are the vegetated side slopes equal to or less than 3:1? Is the BMP located in a proposed drainage easement with access to a public Right of Way (ROW)? Inlet velocity (from treatment system) Is the area surrounding the cell likely to undergo development in the future? Are the slopes draining to the bioretention cell greater than 20%? Is the drainage area permanently stabilized? Pretreatment Used (Indicate Type Used with an "X" in the shaded cell) Gravel and grass (81inches gravel followed by 3-5 ft of grass) Grassed swale Forebay Other Form SW401-Bioretention-Rev.8 July 30, 2009 350.67 fmsl Y (Y or N) OK N (Y or N) 349.67 fmsl 0 inches Insufficient mulch depth, unless installing grassed cell. 347.67 fmsl 2ft n1414 ft Y (Y or N) 3 OK 10 OK 1ft 346.34 fmsl 344 fmsl 2.34 ft OK Y (Y or N) fmsl 349.67 ft 0 Y (Y or N) OK Y (Y or N) OK 40 n N (Y or N) Show how flow is evenly distributed. Y (Y or N) OK Y (Y or N) OK Y (Y or N) OK Y (Y or N) OK 4.73 ft/sec Insufficient inlet velocity unless energy dissipating devices are being used. N (Y or N) OK N (Y or N) OK Y (Y or N) OK #VALUE! Parts I and II. Design Summary, Page 2 of 2 Permit Number: (to be provided by DWQ) O?pF WATE9OG aC*A WDENR T STORMWATER MANAGEMENT PERMIT APPLICATION FORM 401 CERTIFICATION APPLICATION FORM BIORETENTION CELL SUPPLEMENT This form must be filled out, printed and submitted. The Required Items Checklist (Part /I/) must be printed, filled out and submitted along with all of the required information. I. PROJECT INFORMATION Project name Rolesville Middle School Contact name Jon Meade Phone number 252-399-0704 Date January 28, 2010 Drainage area number Bioretentionfi4 II. DESIGN INFORMATION Site Characteristics Drainage area 79,849 ft2 Impervious area 37,941 ft2 Percent impervious 47.5% % Design rainfall depth 1.0 inch Peak Flow Calculations Is pre/post control of the 1-yr, 24-hr peak flow required? N (Y or N) 1-yr, 24-hr runoff depth 2.91 in 1-yr, 24-hr intensity 5.04 in/hr Pre-development 1-yr, 24-hr peak flow 3.695 ft'/sec Post-development 1-yr, 24-hr peak flow 5.358 ft'/sec Pre/Post 1-yr, 24-hr peak control 1.663 ft'/sec Storage Volume: Non-SA Waters Minimum volume required 3,178.0 ft' Volume provided 3,613.0 ft' OK Storage Volume: SA Waters 1.5" runoff volume ft3 Pre-development 1-yr, 24-hr runoff ft3 Post-development 1-yr, 24-hr runoff ft3 Minimum volume required 0 ft3 Volume provided ft3 Cell Dimensions Ponding depth of water 12 inches OK Ponding depth of water 1.00 ft Surface area of the top of the bioretention cell 4,136.0 ft2 OK Length: 101 ft OK Width: 38 ft OK -or- Radius ft Media and Soils Summary Drawdown time, ponded volume 8 hr OK Drawdown time, to 24 inches below surface 24 hr OK Drawdown time, total: 32 hr In-situ soil: Soil permeability NA in/hr OK Planting media soil: Soil permeability 1.50 in/hr OK Soil composition % Sand (by weight) 87% OK % Fines (by weight) 10% OK % Organic (by weight) 3% OK Total: 100% Phosphorus Index (P-Index) of media 10 (unitless) OK Form SW401-Bioretention-Rev.8 July 30, 2009 Parts I and II. Design Summary, Page 1 of 2 Permit Number: (to be provided by DWQ) Basin Elevations Temporary pool elevation Type of bioretention cell (answer "Y" to only one of the two following questions): Is this a grassed cell? Is this a cell with trees/shrubs? Planting elevation (top of the mulch or grass sod layer) Depth of mulch Bottom of the planting media soil Planting media depth Depth of washed sand below planting media soil Are underdrains being installed? How many clean out pipes are being installed? What factor of safety is used for sizing the underdrains? (See BMP Manual Section 12.3.6) Additional distance between the bottom of the planting media and the bottom of the cell to account for underdrains Bottom of the cell required SHWT elevation Distance from bottom to SHWT Internal Water Storage Zone (IWS) Does the design include IWS Elevation of the top of the upturned elbow Separation of IWS and Surface Planting Plan Number of tree species Number of shrub species Number of herbaceous groundcover species Additional Information Does volume in excess of the design volume bypass the bioretention cell? Does volume in excess of the design volume flow evenly distributed through a vegetated filter? What is the length of the vegetated filter? Does the design use a level spreader to evenly distribute flow? Is the BMP located at least 30 feet from surface waters (50 feet if SA waters)? Is the BMP localed at least 100 feet from water supply wells? Are the vegetated side slopes equal to or less than 3:1? Is the BMP located in a proposed drainage easement with access to a public Right of Way (ROW)? Inlet velocity (from treatment system) Is the area surrounding the cell likely to undergo development in the future? Are the slopes draining to the bioretention cell greater than 20%? Is the drainage area permanently stabilized? Pretreatment Used (Indicate Type Used with an "X" in the shaded cell) Gravel and grass (flinches gravel followed by 3-5 ft of grass) Grassed Swale Forebay Other 355.00 fmsl Y N (Y or N) _(Y or N) 354 fmsl 0 inches 352 fmsl 2ft 0.33 ft Y (Y or N) 4 10 1ft 350.67 fmsl 348 fmsl 2.67 ft OK Insufficient mulch depth, unless installing grassed cell. Insufficient number of clean out pipes provided. OK OK N (Y or N) fmsl 354 ft 0 Y (Y or N) OK Y (Y or N) OK 46 ft N (Y or N) Show how flow is evenly distributed. Y (Y or N) OK Y (Y or N) OK Y (Y or N) OK Y (Y or N) OK 4.73 ft/sec Insufficient inlet velocity unless energy dissipating devices are being used. N (Y or N) OK N (Y or N) OK Y (Y or N) OK Dissipator Pad #VALUE! Form SW401-Bioretention-Rev.8 July 30, 2009 Parts I and 11. Design Summary, Page 2 of 2 Permit No: (to be assigned by DWq) t. Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a requirement has not been met, attach justification. Pagel Plan In' ials Sheet No. jez?. -9 "4 1. Plans (1" - 50' or larger) of the entire site showing: Design at ultimate build-out, t Off-site drainage (if applicable), Delineated drainage basins (include Rational C coefficient per basin), Cell dimensions, Pretreatment system, High flow bypass system, Maintenance access, Recorded drainage easement and public right of way (ROW), Clean out pipe locations, Overflow device, and Boundaries of drainage easement. G "3• 2. Plan details (1" = 30' or larger) for the bioretention cell showing: ' Cell dimensions Pretreatment system, High flow bypass system, Maintenance access, Recorded drainage easement and public right of way (ROW), Design at ultimate build-out, Off-site drainage (if applicable), Clean out pipe locations, Overflow device, and Boundaries of drainage easement. V 3 'S Indicate the P-Index between 10 and 30 3. Section view of the bioretention cell (1" = 20' or larger) showing: Side slopes, 3:1 or lower Underdrain system (if applicable), and Bioretention cell layers [ground level and slope, pre-treatment, ponding depth, mulch depth, fill media depth, washed sand, filter fabric (or choking stone if applicable), #57 stone, underdrains (if applicable), SHWT level(s), and overflow structure] ATITjC??j 4. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. The results of the soils report must be verified in the field by DWO, by completing & submitting the soils investigation request form. County soil maps are not an acceptable source of soils information. All elevations shall be in feet mean sea level (fmsl). Results of soils tests of both the planting soil and the in situ soil must include: Soil permeability, Soil composition (% sand, % fines, % organic), and P-index. " ' 5. A detailed planting plan (1 = 20 or larger) prepared by a qualified individual showing: i ?a/¢46 A variety of suitable species, u Sizes, spacing and locations of plantings, Total quantity of each type of plant specified, A planting detail, The source nursery for the plants, and Fertilizer and watering requirements to establish vegetation. 6. An assurance that the installed system will meet design specifications upon initial operation once the project is complete and the entire drainage area is stabilized. /J • L `? ARV 7. A construction sequence that shows how the bioretention cell will be protected from sediment until the C' entire drainage area is stabilized. 8. The supporting calculations (including underdrain calculations, if applicable). 9 A f . copy o the signed and notarized inspection and maintenance (I&M) agreement. / 10. A copy of the deed restriction. Form SW401-Bioretention-Rev.7 Part III, Page 1 of 1 o?O? W AT f9oG > ti NCDENR ° STORMWATER MANAGEMENT PERMIT APPLICATION FORM 401 CERTIFICATION APPLICATION FORM LEVEL SPREADER, FILTER STRIP AND RESTORED RIPARIAN BUFFER SUPPLEMENT This form must be completely filled out, printed and submitted. DO NOT FORGET TO ATTACH THE REQUIRED ITEMS CHECKLIST AND ALL REQUIRED ITEMS (NEXT WORKSHEET)! 1. PROJECT INFORMATION Project name Rolesville Middle School (M6) Contact name Jon Meade Bartlett Engineering Phone number 252-399-0704 Date February 3, 2010 Drainage area number LEVEL SPREADER#2 (FES#8) II. DESIGN INFORMATION For Level Spreaders Receiving Flow From a BMP Type of BMP Drawdown flow from the BMP cfs For Level Spreaders Receiving Flow from the Drainage Area Drainage area Impervious surface area Percent impervious Rational C coefficient Peak flow from the 1 in/hr storm Time of concentration Rainfall intensity, 1 0-yr storm Peak flow from the 10-yr storm Where Does the Level Spreader Discharge ? To a grassed bioretention cell? To a mulched bioretention cell? To a wetland? To a filter strip or riparian buffer? Other (specify) Filter Strip or Riparian Buffer Characterization (if applicable) Width of grass Width of dense ground cover Width of wooded vegetation Total width Elevation at downslope base of level lip Elevation at top of bank of the receiving water Slope (from level lip to to top of bank) Are any draws present? Level Spreader Design Forebay surface area Feet of level lip needed per cfs Answer "Y" to one of the following: Length based on the 1 in/hr storm? Length based on the 10-yr storm? Length based on the BMP discharge rate? Design flow Is a bypass device provided? 46,448.00 ft 9,665.00 ft2 20.81 % 0.40 0.43 cfs 5.00 min 7.22 in/hr 3.08 cis (Y or N) (Y or N) (Y or N) (Y or N) Please complete filter strip characterization below. 30.00 ft ft 30.00 ft 60.00 ft 354.00 fmsl 350.00 fmsl 6.67 % Level spreaders must be used in series if vegetation is >50% wooded N (Y or N) OK 35.00 sq it 39 ft/cfs N (Y or N) Y (Y or N) N (Y or N) 3.08 cfs N (Y or N) OK A bypass device is not needed Form SW401-Level Spreader, Fitter Strip, Restored Riparian Buffer-Rev.5 Parts I. and II. Design Summary, page 1 of 2 Length of the level lip Are level spreaders in series? Bypass Channel Design (if applicable) Does the bypass discharge through a wetland? Does the channel enter the stream at an angle? Dimensions of the channel (see diagram below): M B W y Peak velocity in the channel during the 10-yr storm Channel lining material ------------ M 121.00 ft Level spreader length OK N (Y or N) (Y or N) Do not complete this section of the worksheet (Y or N) Do not complete this section of the worksheet Do not complete this section of the worksheet ft Do not complete this section of the worksheet ft Do not complete this section of the worksheet ft Do not complete this section of the worksheet ft Do not complete this section of the worksheet cfs Do not complete this section of the worksheet Do not complete this section of the worksheet B M Form SW401-Level Spreader, Filter Strip, Restored Riparian Buffer-Rev.5 Parts I. and II. Design Summary, page 2 of 2 O?O? W ATFAOG NCDENR ° STORMWATER MANAGEMENT PERMIT APPLICATION FORM 401 CERTIFICATION APPLICATION FORM LEVEL SPREADER, FILTER STRIP AND RESTORED RIPARIAN BUFFER SUPPLEMENT This form must be completely filled out, printed and submitted. DO NOT FORGET TO ATTACH THE REQUIRED ITEMS CHECKLIST AND ALL REQUIRED ITEMS (NEXT WORKSHEET)! I. PROJECT INFORMATION Project name Rolesville Middle School (M6) Contact name Jon Meade Bartlett Engineering Phone number 252-399-0704 Date February 3, 2010 Drainage area number LEVEL SPREADER#1(FES#7) II. DESIGN INFORMATION For Level Spreaders Receiving Flow From a BMP Type of BMP Drawdown flow from the BMP cfs For Level Spreaders Receiving Flow from the Drainage Area Drainage area Impervious surface area Percent impervious Rational C coefficient Peak flow from the 1 in/hr storm Time of concentration Rainfall intensity, 10-yr storm Peak flow from the 10-yr storm 45,606.00 ftz 6,640.00 ft2 14.56 % 0.35 0.37 cis 5.00 min 7.22 in/hr 2.65 cfs Where Does the Level Spreader Discharge ? To a grassed bioretention cell? To a mulched bioretention cell? To a wetland? To a filter strip or riparian buffer? Other (specify) Filter Strip or Riparian Buffer Characterization (if applicable) Width of grass Width of dense ground cover Width of wooded vegetation Total width Elevation at downslope base of level lip Elevation at top of bank of the receiving water Slope (from level lip to to top of bank) Are any draws present? Level Spreader Design Forebay surface area Feet of level lip needed per cfs Answer "Y" to one of the following: Length based on the 1 in/hr storm? Length based on the 10-yr storm? Length based on the BMP discharge rate? Design flow Is a bypass device provided? (Y or N) (Y or N) (Y or N) (Y or N) 30.00 ft ft 40.00 ft 70.00 ft 354.00 fmsl 352.00 fmsl 2.86 % OK N (Y or N) OK 35.00 sq ft OK 43 ft/cfs N (Y or N) Y (Y or N) N (Y or N) 2.65 cfs (Y or N) A bypass device is not needed Form SW401-Level Spreader, Filter Strip, Restored Riparian Buffer-Rev.5 Parts I. and II. Design Summary, page 1 of 2 Length of the level lip Are level spreaders in series? Bypass Channel Design (if applicable) Does the bypass discharge through a wetland? Does the channel enter the stream at an angle? Dimensions of the channel (see diagram below): M B W y Peak velocity in the channel during the 10-yr storm Channel lining material cfs Do not complete this section of the worksheet Do not complete this section of the worksheet • • M 120.00 ft Level spreader length OK N (Y or N) (Y or N) Do not complete this section of the worksheet (Y or N) Do not complete this section of the worksheet. Do not complete this section of the worksheet it Do not complete this section of the worksheet ft Do not complete this section of the worksheet ft Do not complete this section of the worksheet ft Do not complete this section of the worksheet B 1 M Form SW401-Level Spreader, Fitter Strip, Restored Riparian Buffer-Rev.5 Parts I. and II. Design Summary, page 2 of 2 Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a requirement has not been met, attach justification. Pagel Plan Initials Sheet No. l rcLA 4. A date-stamped photograph of the filter strip that clearly shows the type of vegetation that is present. i ngm& 5. A construction sequence that shows how the level spreader will be protected from sediment until the entire G-s• 3 drainage area is stabilized. -3s,? 6. The supporting calculations. 7. A copy of the signed and notarized operation and maintenance (08M) agreement. r 8. A copy of the deed restrictions (if required). Plans (1" - 50' or larger) of the entire site showing: Design at ultimate build-out, Off-site drainage (if applicable), Delineated drainage basins (include Rational C coefficient per basin), Forebay (if applicable), High flow bypass system, - Maintenance access, Proposed drainage easement and public right of way (ROW), and Boundaries of drainage easement. 2. Plan details (1" = 30' or larger) for the level spreader showing: - Forebay (if applicable), - High flow bypass system, - One foot topo lines between the level lip and top of stream bank, - Proposed drainage easement, and - Design at ultimate build-out. 3. Section view of the level spreader (1" = 20' or larger) showing: - Underdrain system (if applicable), - Level lip, - Upslope channel, and - Downslope filter fabric. Form SW401-Level Spreader, Filter Strip, Restored Riparian Buffer-Rev.5 Part III, page 1 of 1 Level Spreader #2 Location Level Spreader #1 Location Permit No. (to be provided by DWp) ARWA OF W A Ttc9 NCDENR O -? STORMWATER MANAGEMENT PERMIT APPLICATION FORM 401 CERTIFICATION APPLICATION FORM WET DETENTION BASIN SUPPLEMENT This form must be filled out, printed and submitted. The Required Items Checklist (Part 111) must be printed, filled out and submitted along with all of the required information. It. PROJECT INFORMATION Project name Rolesville Middle School Contact person Jon Meade Phone number 252-399-0704 Date 2/2/2010 Drainage area number Detention Pond II. DESIGN INFORMATION Site Characteristics Drainage area 579,348 ft2 Impervious area, post-development 288,742 ft % impervious 49.84 % Design rainfall depth 1.0 in Storage Volume: Non-SA Waters Minimum volume required Volume provided Storage Volume: SA Waters 1.5" runoff volume Pre-development 1-yr, 24-hr runoff Post-development 1-yr, 24-hr runoff Minimum volume required Volume provided Peak Flow Calculations Is the pre/post control of the 1yr 24hr storm peak flow required? 1-yr, 24-hr rainfall depth Rational C, pre-development Rational C, post-development Rainfall intensity: 1-yr, 24-hr storm Pre-development 1-yr, 24-hr peak flow Post-development 1-yr, 24-hr peak flow Pre/Post 1-yr, 24-hr peak flow control Elevations Temporary pool elevation Permanent pool elevation SHWT elevation (approx. at the perm. pool elevation) Top of 1Oft vegetated shelf elevation Bottom of 1Oft vegetated shelf elevation Sediment cleanout, top elevation (bottom of pond) Sediment cleanout, bottom elevation Sediment storage provided Is there additional volume stored above the state-required temp. pool? Elevation of the top of the additional volume 24,070 ft3 OK 26,311 ft3 OK, volume provided is equal to or in excess of volume required. ft3 ft3 ft3 ft3 ft3 N (Y or N) 3.0 in 0.35 (unitless) 0.62 (unitless) 7.22 in/hr OK 1.60 ft3/sec 1.91 ft3/sec 0.31 ft3/sec 368.35 hsl 367.00 hsl 363.5-365 fmsl 367.50 hsl 366.50 hsl 362.00 fmsl 361.00 hsl 1.00 It Y (Y or N) 368.4 fmsl OK Form SW401-Wet Detention Basin-Rev.8-9/17/09 Parts I. & II. Design Summary, Page 1 of 2 Permit No (to be provided by DWp) II. DESIGN INFORMATION Surface Areas Area, temporary pool 21,131 ftz Area REQUIRED, permanent pool 16,222 ft2 SAIDA ratio 2.80 (unitless) Area PROVIDED, permanent pool, Ap._p,, 16,230 ft OK Area, bottom of 1 Oft vegetated shelf, Abof sheff 12,349 ft` Area, sediment cleanout, top elevation (bottom of pond), Ab,-Pd 4,567 ft Volumes Volume, temporary pool 26,311 ft' OK Volume, permanent pool, Vperm_" 46,096 ft' Volume, forebay (sum of forebays if more than one forebay) 8,495 ft' Forebay % of permanent pool volume 18.4% % OK SAIDA Table Data Design TSS removal 90 % Coastal SAIDA Table Used? N (Y or N) Mountain/Piedmont SAIDA Table Used? Y (Y or N) SAIDA ratio 2.80 (unitless) Average depth (used in SAIDA table): Calculation option 1 used? (See Figure 10-2b) N (Y or N) Volume, permanent pool, Vpe-_po 46,096 ft' Area provided, permanent pool, A,ar,r,j. 16,230 ft` Average depth calculated ft Need 3 ft min. Average depth used in SAIDA, dav, (Round to nearest 0.5ft) it Calculation option 2 used? (See Figure 10-2b) Y (Y or N) Area provided, permanent pool, Ai --P, 16,230 ft` Area, bottom of 1 Oft vegetated shelf, Ate, shelf 12,349 ft` Area, sediment cleanout, top elevation (bottom of pond), Anoiya,d 4,567 ft2 'Depth' (distance b/w bottom of 1 Oft shelf and top of sediment) 4.50 ft Average depth calculated 3.52 ft OK Average depth used in SAIDA, dal, (Round to nearest 0.5ft) 3.5 ft OK Drawdown Calculations Drawdown through orifice? Y (Y or N) Diameter of orifice (if circular) 3.00 in Area of orifice (if-non-circular) inz Coefficient of discharge (CD) 0.60 (unitless) Driving head (Ha) 0.41 ft Drawdown through weir? N (Y or N) Weir type (unitless) Coefficient of discharge (CW) (unitless) Length of weir (L) ft Driving head (H) ft Pre-development 1-yr, 24-hr peak flow 1.60 ft'/sec Post-development 1-yr, 24-hr peak flow 1.91 ft'/sec Storage volume discharge rate (through discharge orifice or weir) 0.15 ft3/sec Storage volume drawdown time 2.01 days OK, draws down in 2-5 days. Additional Information Vegetated side slopes 3 :1 OK Vegetated shelf slope 10 :1 OK Vegetated shelf width 10.0 ft OK Length of flowpath to width ratio 3 :1 OK Length to width ratio 3.3 :1 OK Trash rack for overflow & orifice? Y (Y or N) OK Freeboard provided 1.0 ft OK Vegetated filter provided? N (Y or N) OK Recorded drainage easement provided? Y (Y or N) OK Capures all runoff at ultimate build-out? Y (Y or N) OK Drain mechanism for maintenance or emergencies is: Y Form SW401-Wet Detention Basin-Rev.8-9/17/09 Parts I. & II. Design Summary, Page 2 of 2 Permit No. (to be provided by DWQ) Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a requirement has not been met, attach justification. Pagel Plan Initials Sheet No.? j C _ 3 'I 1. Plans (1" - 50' or larger) of the entire site showing: Design at ultimate build-out, Off-site drainage (if applicable), Delineated drainage basins (include Rational C coefficient per basin), Basin dimensions, Pretreatment system, High flow bypass system, Maintenance access, Proposed drainage easement and public right of way (ROW), Overflow device, and Boundaries of drainage easement. C - ?0 2. Partial plan (1" = 30' or larger) and details for the wet detention basin showing: Outlet structure with trash rack or similar, - Maintenance access, - Permanent pool dimensions, Forebay and main pond with hardened emergency spillway, Basin cross-section, Vegetation specification for planting shelf, and Filter strip. r C - 3 b " ' 1 3. Section view of the wet detention basin (1 = 20 or larger) showing: Side slopes, 3:1 or lower, Pretreatment and treatment areas, and Inlet and outlet structures. 4. If the basin is used for sediment and erosion control during construction, clean out of the basin is specified on the plans prior to use as a wet detention basin. 5. A table of elevations, areas, incremental volumes & accumulated volumes for overall pond and for forebay, S - S 3 to verify volume provided, f 6. A construction sequence that shows how the wet detention basin will be protected from sediment until the entire drainage area is stabilized. - 7 . The supporting calculations. 1u.Qe? 8. A copy of the signed and notarized operation and maintenance (0&M) agreement. 9. A copy of the deed restrictions (if required). ??tU 10. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. County soil maps are not an acceptable source of soils information. Form SW401-Wet Detention Basin-Rev.8-9/17/09 Part III. Required Items Checklist, Page 1 of 1 Permit Number: (to be provided by DWQ) I acknowledge and agree by my signature below that I am responsible for the performance of the maintenance procedures listed above. I agree to notify DWQ of any problems with the system or prior to any changes to the system or responsible parry. Project name: Rolesville Middle School BMP drainage area number:_ [)6a' 6,,,, P"Cl Print name: Tim Driscoll Title: Project Manager, Wake County Schools - Facility Planning and Construction Address: 1429 Rock Quarry Road, Suite 116, Raleigh, NC 27610 Phone: 919 508-9048 Signature:.?o Date: 2-i- Note: The legally responsible party should not be a homeowners association unless more than 50% of the lots have been sold and a resident of the subdivision has been named the president. L . a Notary Public for the State of erth CG ro 1 i n t , County of y?) 1 , do hereby certify that rAt)l't- ?J n « ,oil ! personally appeared before me this s t day of and acknowledge the due execution of the forgoing wet detention basin maintenance requirements. Witness my hand and official seal, °•'v?.•?- rrr . % 0 TA LAG ,G f C) U 1,41 SEAL My commission expires 2 l a l ?o I n I Form SW401-Wet Detention Basin O&M-Rev.4 Page 4 of 4 Permit Number: (to be provided by DWQ) I acknowledge and agree by my signature below that I am responsible for the performance of the maintenance procedures listed above. I agree to notify DWQ of any problems with the system or prior to any changes to the system or responsible party. Project name: Rolesville Middle School BMP drainage area number: Bioretention Area #1 Print name: Tim Driscoll Title: Project Manager, Wake County Schools - Facility Planning and Construction Address: 1429 Rock Quarry Road, Suite 116, Raleigh, NC 27610 Phone: (919) 508-9048 Signature: iI--v, Date: Z -/`io Note: The legally responsible party should not be a homeowners association unless more than 50% of the lots have been sold and a resident of the subdivision has been named the president. L 417,1 u r? ?? r , a Notary Public for the State of aor±b C4"-o It k7 a, , County of On -b do hereby certify that j, tr, ?, rr sc U ! personally appeared before me this 15y- day of 2 a i c , and acknowledge the due execution of the forgoing bioretention maintenance requirements. Witness my hand and official seal, `Q-A r\. r'`rF"` '....... SEAL My commission expires Form SW401-Bioretention I&M-Rev. 2 Page 4 of 4 Permit Number: (to be provided by DWQ) I acknowledge and agree by my signature below that I am responsible for the performance of the maintenance procedures listed above. I agree to notify DWQ of any problems with the system or prior to any changes to the system or responsible parry. Project name: Rolesville Middle School BMP drainage area number: Bioretention Area #2 Print name: Tim Driscoll Title: Project Manager Wake County Schools - Facility Planning and Construction Address: 1429 Rock Quarry Road Suite 116, Raleigh NC 27610 191508 Signature: --7 '-, Date: 2-1-10 Note: The legally responsible party should not be a homeowners association unless more than 50% of the lots have been sold and a resident of the subdivision has been named the president. in L l urn e r , a Notary Public for the State of A112 r' 6?10 11 nUt County of do hereby certify that ?, th,,c,p i j personally appeared before me this I s r day of and acknowledge the due execution of the forgoing bioretention maintenance requirements. Witness my hand and official seal, -'v SEAL -7 1 l d-v a My commission expires a 1, Form SW401-Bioretention I&M-Rev. 2 Page 4 of 4 Permit Number: (to be provided by DWQ) I acknowledge and agree by my signature below that I am responsible for the performance of the maintenance procedures listed above. I agree to notify DWQ of any problems with the system or prior to any changes to the system or responsible parry. Project name: Rolesville Middle School BMP drainage area number: Bioretention Area #3 Print name: Tim Driscoll Title: Project Manager, Wake County Schools - Facili y Planning and Construction Address: 1429 Rock Quarry Road, Suite 116, Raleigh, NC 27610 Phone Signat Date: -,?-/-/O Note: The legally responsible party should not be a homeowners association unless more than 50% of the lots have been sold and a resident of the subdivision has been named the president. I, r? rr t-.K , a Notary Public for the State of IV'or+i-? f:?z??f ? t? _ , County of ?k do hereby certify that Trr, 1?, , ; ?. c personally appeared before me this ?- day of 7 o ; o , and acknowledge the due execution of the forgoing bioretention maintenance requirements. Witness my hand and official seal, SEAL My commission expires --V /a-7 / / 0 Form SW401-Bioretention I&M-Rev. 2 Page 4 of 4 Permit Number: (to be provided by DWQ) I acknowledge and agree by my signature below that I am responsible for the performance of the maintenance procedures listed above. I agree to notify DWQ of any problems with the system or prior to any changes to the system or responsible parry. Project name: Rolesville Middle School BMP drainage area number: Bioretention Area #4 Print name: Tim Driscoll Title: Project Manager Wake County Schools - Facility Planning and Construction Address: 1429 Rock Quarry Road Suite 116, Raleigh NC 27610 Date: Z-/-i0 Note: The legally responsible party should not be a homeowners association unless more than 50% of the lots have been sold and a resident of the subdivision has been named the president. I, ?, ,-, L - I u r? r r , a Notary Public for the State of zr 1ia -r> f t n e , County of hJ r.U , do hereby certify that personally appeared before me this 10- day of -2p 10 , and acknowledge the due execution of the forgoing bioretention maintenance requirements. Witness my hand and official seal, C0\3 Z SEAL My commission expires --?I a-7 ?o Form SW401-Bioretention I&M-Rev. 2 Page 4 of 4 Permit Number: (to be provided by DWQ) I acknowledge and agree by my signature below that I am responsible for the performance of the maintenance procedures listed above. I agree to notify DWQ of any problems with the system or prior to any changes to the system or responsible party. Project name: Rolesville Middle School BMP drainage area number: Level Spreader #1 Print name: Tim Driscoll Title: Project Manager, Wake County Schools - Facility Planning and Construction Address: 1429 Rock Quarry Road, Suite 116, Raleigh, NC 27610 Phone: (919) 508-9048 Signature: Date: z - /-/o Note: The legally responsible party should not be a homeowners association unless more than 50% of the lots have been sold and a resident of the subdivision has been named the president. L , T h r o l ? , a Notary Public for the State of County of W,_IL I_ , do hereby certify that ?rn cth ?a r s (] personally appeared before me this Is .,L day of FLbr , -a o r c, and acknowledge the due execution of the forgoing filter strip, riparian buffer, and/or level spreader maintenance requirements Witness my hand and official seal, U__ . ...........I. SEAL My commission expires? ja o J o Form SWU401-Level Spreader, Filter Strip, Restored Riparian Buffer O&M-Rev.3 Page 3 of 3 Permit Number: (to be provided by DWQ) I acknowledge and agree by my signature below that I am responsible for the performance of the maintenance procedures listed above. I agree to notify DWQ of any problems with the system or prior to any changes to the system or responsible parry. Project name: Rolesville Middle School BMP drainage area number: Level Spreader #2 Print name: Tim Driscoll Title: Proiect Manager, Wake County Schools - Facility Planning and Construction Address: 1429 Rock Quarry Road, Suite 116, Raleigh, NC 27610 Phone: (919) 508-9048 Signature: Date: e-1-1c) Note: The legally responsible party should not be a homeowners association unless more than 50% of the lots have been sold and a resident of the subdivision has been named the president. 1, 14ey?l L - ._ FW_4 a_? , a Notary Public for the State of L r `;f4 [ _r o J ? r Ca , County of i) alc t , do hereby certify that F) r - fA L4 f I personally appeared before me this day of Fe6yu v; , and acknowledge the due execution of the forgoing filter strip, riparian buffer, and/or level spreader maintenance requirements. Witness my hand and official seal, =O 'u SEAL My commission expires ;;)-1 -71 a0, / t) Form SWU401-Level Spreader, Filter Strip, Restored Riparian Buffer O&M-Rev.3 Page 3 of 3 ? w N - D pp m D ? 0 D 0 v ?ooo a C o N , to (o n) d x m =1 m T rn (D O m D o ?OCDN Z 0 T c C N A oo z o o cn Z z 3; U) ((n = O c ??oo 0 1 00 K 0CD rn - 71 D Z J N p v n Z 0? C 0 m z-U 0z0 N T (n v G D ?m U) ;u r- C m U) p o m D 0 D D n w 4 A m D M O 0 0 { Co 0 D (n Z? m Z x OT (nC °C N N Z o ? mm T x D ) rn rn rn o 0 x m 0 = D _ m (n z o z c o N w (i co X a N O O X 0 mr- 0 m _C D z O M c 0 ? m D P W N ? m cn p D G) X z m D m -4 (D co x? m ?DwAl> mD 0 )DW w w 00 w C ) >z y -- O z l D M00 V (nC) T m > O z ? > D ;u N 1) N (n 0) J A cD V D -r{ m T /V D w N 0 (D .0- -4 T W T 111 CT o D D - Z D c z ? n C ?ooo co p(nrnV b O W N DD D I O z (n O C) O (n V DON O < M -i A) N) 0 oOD ? (gyp w (m ccoT?D oorn mm 0 m 0 OD .4 D CJ O) T - D DOO(O m 0 ?o oCnnw - Z D 00 2 ;p m m cn ?nm0 JNNN (S a D 2 G) m cn c -u ;u T N U7 0) ?A(nA in- O< > n N N OODD T v m m D 0 X m D W J-+ACn D O ?rnrnco -nm n W W V K aNA(n n O OD V n O ?p cri -4 0) c0 0 T m J A 0m m O J w w w m m n(nrn-4 <:*m n o V C) D m;o 71 D V O O O 0 Z < ci c m 0 v v m CL 3 D 0 In V N fD N 3 d 7 N m w CL d 0 3 m (O co DO z0 D T 0(n mT 0 aD m1 < ccn 0-0 U) 2 > 1 n O z 0 m 1 m 00 N cD O ? N -+ in v O 7- N !o O? V 000 wrn coc oo - rn °V4 w °' a' w V W W 0 O z V O N 1 m c? D q = D r c m v m 1 m X 3 Z O z < D r c m Co O D ;o ;a m m 1 Dm at z 1 O z W O D ;o Dm Xk z N 1 O Z _M 0 D m m? M Z w 1 O z W O D x ;u m D m at z A 1 O z ? O mz D o r - m m r oo7- O (Tw 00 A N Dmcn ;o D D4D 0 m r m m r- > TU) Xm? Do y 0 m N Rolesville Middle School (M6)-Rolesville, NC STORMWATER POND PRELIMINARY CALCULATIONS PREDEVELOPED POST DEVELOPED RETURN EVENT PEAK RUN-OFF PEAK RUN-OFF REDUCTION YEARS CFS (CFS 1 1.6 1.91 -19.4 2 4.77 13.51 -183.2 10 18.55 49.85 -168.7 25 26.5 61.84 -133.4 100 42.57 84.21 -97.8 STORMWATER DETENTION BASIN The storm water detention basin was designed to meet the Tar-Pamlico Stormwater Regulations for nitrogen and peak-flow reduction. The detention pond meets the required 2-5 day drawdown for a 1-yr storm event. Elevation: 361.0' to 370.0' top of dike Maximum Elevation: 368.98' for a 100-yr storm event with 1.0'+ freeboard Inlet Box: Crest Elevation 368.35' Inlet Box- 24"x36" Barrel: Free Outfall Diameter = 1.5' Emergency Weir Elevation =368.6' Length=110' Orifice Structure: One opening Invert Elevation 367.0' Diameter = 3.0" Drawdown Time: Approximately 110 hrs (Type 11 24hr 1-yr storm event) PRELIMINARY POND DESIGN DATA POND RESIDENTIAL DRAINAGE AREA (ACRES) 13.3 IMPERVIOUS AREA 6.63 MAX IMPERVIOUS AREA 50% AVG. POOL DEPTH (FEET) 3.5 TSS REMOVAL 90% SA/DA RATIO 2.8 SURFACE AREA REQUIRED (SF) 16,222 SURFACE AREA PROPOSED SF 16,230 DRAWDOWN ORIFICE SIZE (INCHES) 3 TEMP. POOL VOLUME PROVIDED 26311 DRIVING HEAD (FT) 0.41 DISCHARGE (CFS) 0.151 DRAWDOWN TIME (DAYS) 2.01 OPTION#2 da„ _ Depth = Abot shell = Aperm_pool = Abot_pond = day = (From NCDWQ Stormwater BMP Chart) (0.25'(1 +Abot_sheH/Aperm_pool))+(((Abot_sheH+Abot_pond)/2 )`Depth/Abot_shelf) 4.5 (Depth from bottom shelf to bottom pond) 12349 366.50 16230 367.00 4567 362.00 3.52 DESIGNED TO CAPTURE 1.0" RUN-OFF W QV D.A. BUILT UPON BUA./ Rv STORAGE BMP DRAINAGE AREA (BUA) D.A. REQUIRED AREA AREA (SF) (SF) (CF) 'ION BASIN 579,348 288,742 0.50 0.50 24070 tmp#3.txt #units=Elevation,f t,Area,ac,volume ,ft3,volume,ft3 # Elev Area Cumml Avg Cumml conic # ft ac ft3 ft3 370.0000 0.5749 64557.5860 64539.8902 369.5000 0.5487 52321.4316 52304.8482 369.0000 0.5229 40651.7207 40636.2627 368.5000 0.4976 29538.3106 29523.9920 368.3500 0.4901 26311.4807 26297.1931 368.0000 0.4728 18971.5914 18957.7006 367.5000 0.4484 8940.4532 8927.7345 367.0000 0.3726 0.0000 0.0000 Page 1 tmp#4.txt #units=Elevation,ft,Area,ft2,vol ume,ft3,volume, # Elev Area Cumml Avg # ft ft2 ft3 370.0000 25043.8235 64557.5860 369.5000 23900.7941 52321.4316 369.0000 22778.0496 40651.7207 368.5000 21675.5907 29538.3106 368.3500 21348.8083 26311.4807 368.0000 20593.4165 18971.5914 367.5000 19531.1360 8940.4532 367.0000 16230.6770 0.0000 ft3 Cumml conic ft3 64539.8902 52304.8482 40636.2627 29523.9920 26297.1931 18957.7006 8927.7345 0.0000 Page 1 tmp#5.txt #units=Elevation,ft,Area,ft2,vol ume,ft3,volume, # Elev Area Cumml Avg # ft ft2 ft3 367.0000 12260.2533 37601.9028 366.5000 9912.0419 32058.8290 366.0000 9246.4514 27269.2057 365.0000 7969.0884 18661.4358 364.0000 6763.4835 11295.1498 363.0000 5629.6350 5098.5906 362.0000 4567.5461 0.0000 ft3 POND ONLY Cumml conic ft3 37556.4968 32023.8144 27235.1548 18635.2940 11277.2434 5089.3469 0.0000 Page 1 #units=Elevation, # Elev # ft 367.0000 366.5000 366.0000 365.0000 364.0000 363.0000 362.0000 ft,Area,ft2,vo Area ft2 3681.8514 2437.7001 2216.3990 1801.3231 1422.9481 1081.2743 776.3019 tmp#6.txt ume,ft3,volume, Cumml Avg ft3 8495.3087 6965.4208 5801.8960 3793.0349 2180.8993 928.7881 0.0000 ft3 FOREBAY ONLY Cumml conic ft3 8468.8191 6949.5819 5786.4958 3781.2178 2172.7953 924.5871 0.0000 Page 1 Job File: P:\_PROJECT FILES\Rolesville Middle School (M6)\POND\R1 PRE.PPW Rain Dir: P:\-PROJECT FILES\Rolesville Middle School (M6)\POND\ -------------------------- -------------------------- JOB TITLE -------------------------- -------------------------- Project Date: 2/4/2009 Project Engineer: Robert S. Bartlett Project Title: Rolesville MS Project Comments: SIN: 121E01C0709D Bartlett Engineering and Surveying, PC PondPack Ver. 9.0041 Time: 4:07 PM Date: 2/2/2010 Table of Contents Table of Contents i aaaaaaaaaaaaaaaaaaaaaa MASTER SUMMARY aaaaaaaaaaaaaaaaaaaaaa Watershed....... Master Network Summary ............. 1.01 aaaaaaaaaaaaaaaaaa DESIGN STORMS SUMMARY aaaaaaaaaaaaaaaaaaa WILSON.......... Design Storms ...................... 2.01 aaaaaaaaaaaaaaaaaaaaaa TC CALCULATIONS aaaaaaaaaaaaaaaaaaaaa SUBAREA 10...... Tc Calcs ........................... 3.01 aaaaaaaaaaaaaaaaaaaaaa CN CALCULATIONS aaaaaaaaaaaaaaaaaaaaa SUBAREA 10...... Runoff CN-Area ..................... 4.01 SIN: 121EOlC0709D Bartlett Engineering and Surveying, PC PondPack Ver. 9.0041 Time: 4:07 PM Date: 2/2/2010 Type.... Master Network Summary Page 1.01 Name.... Watershed File.... P:\-PROJECT FILES\ROlesville Middle School (M6)\POND\R1 PRE.PPW MASTER DESIGN STORM SUMMARY Network Storm Collection: WILSON Total Depth Return Event in Pre 1 3.0000 Pre 2 3.7500 Pre 10 5.8000 Pre 25 6.7500 Pre100 8.5000 Rainfall Type ---------------- Synthetic Curve Synthetic Curve Synthetic Curve Synthetic Curve Synthetic Curve RNF ID TypeII 24hr TypeII 24hr TypeII 24hr TypeII 24hr TypeII 24hr MASTER NETWORK SUMMARY SCS Unit Hydrograph Method (*Node=Outfall; +Node=Diversion;) (Trun= HYG Truncation: Blank=None; L=Left; R=Rt; LR=Left&Rt) Return HYG Vol Qpeak Node ----- ID -------- Type ---- --- Event ac-ft Trun hrs *OUT 10 - JCT ------ 1 ---------- -- .304 --------- 12.2500 *OUT 10 JCT 2 .616 12.2000 *OUT 10 JCT 10 1.811 12.1500 *OUT 10 JCT 25 2.484 12.1500 *OUT 10 JCT 100 3.856 12.1500 Max Qpeak Max WSEL Pond Storage cfs ft ac-ft -------- -------- ------------ 1.60 4.77 18.55 26.50 42.57 SUBAREA 10 AREA 1 .304 12.2500 1.60 SUBAREA 10 AREA 2 .616 12.2000 4.77 SUBAREA 10 AREA 10 1.811 12.1500 18.55 SUBAREA 10 AREA 25 2.484 12.1500 26.50 SUBAREA 10 AREA 100 3.856 12.1500 42.57 SIN: 121EOlC0709D Bartlett Engineering and Surveying, PC PondPack Ver. 9.0041 Time: 4:07 PM Date: 2/2/2010 Type.... Design Storms Page 2.01 Name.... WILSON File.... P:\-PROJECT FILES\Rolesville Middle School (M6)\POND\ Title... Project Date: 2/4/2009 Project Engineer: Robert S. Bartlett Project Title: Rolesville MS Project Comments: DESIGN STORMS SUMMARY Design Storm File,ID = WILSON Storm Tag Name = Pre 1 Data Type, File, ID = Synthetic Storm TypelI 24hr Storm Frequency = 1 yr Total Rainfall Depth= 3.0000 in Duration Multiplier = 1 Resulting Duration = 24.0000 hrs Resulting Start Time= .0000 hrs Step= .1000 hrs End= 24.0000 hrs Storm Tag Name = Pre 2 Data Type, File, ID = Synthetic Storm TypeII 24hr Storm Frequency = 2 yr Total Rainfall Depth= 3.7500 in Duration Multiplier = 1 Resulting Duration = 24.0000 hrs Resulting Start Time= .0000 hrs Step= .1000 hrs End= 24.0000 hrs Storm Tag Name = Pre 10 Data Type, File, ID = Synthetic Storm TypeII 24hr Storm Frequency = 10 yr Total Rainfall Depth= 5.8000 in Duration Multiplier = 1 Resulting Duration = 24.0000 hrs Resulting Start Time= .0000 hrs Step= .1000 hrs End= 24.0000 hrs Storm Tag Name = Pre 25 Data Type, File, ID = Synthetic Storm TypeII 24hr Storm Frequency = 25 yr Total Rainfall Depth= 6.7500 in Duration Multiplier = 1 Resulting Duration = 24.0000 hrs Resulting Start Time= .0000 hrs Step= .1000 hrs End= 24.0000 hrs Storm Tag Name = Pre100 Data Type, File, ID = Synthetic Storm TypeII 24hr Storm Frequency = 100 yr Total Rainfall Depth= 8.5000 in Duration Multiplier = 1 Resulting Duration = 24.0000 hrs Resulting Start Time= .0000 hrs Step= .1000 hrs End= 24.0000 hrs SIN: 121EOlC0709D Bartlett Engineering and Surveying, PC PondPack Ver. 9.0041 Time: 4:07 PM Date: 2/2/2010 Type.... Tc Calcs Name.... SUBAREA 10 Page 3.01 File.... P:\-PROJECT FILES\Rolesville Middle School (M6)\POND\R1 PRE.PPW ........................................................................ TIME OF CONCENTRATION CALCULATOR Segment #1: Tc: SCS Lag Hydraulic Length 812.00 ft Runoff CN 58 Slope .038200 ft/ft Avg.Velocity .54 ft/sec Segment #1 Time: .4177 hrs ------------------------------------------------------------------------ ------------------------- ------------------------- Total Tc: .4177 hrs ------------------------- ------------------------- S/N: 121EOlC0709D Bartlett Engineering and Surveying, PC PondPack Ver. 9.0041 Time: 4:07 PM Date: 2/2/2010 Type.... Tc Calcs Name.... SUBAREA 10 Page 3.02 File.... P:\-PROJECT FILES\Rolesville Middle School (M6)\POND\R1 PRE.PPW ------------------------------------------------------------------------ Tc Equations used... ------------------------------------------------------------------------ ==== SCS Lag Tc = 0.000877 * (Lf**0.8) * ((10001CN) - 9)**0.7) * (Sf**-0.5) Where: Tc = Time of concentration, hrs Lf = Flow length, ft CN = SCS Curve Number Sf = Slope, ft/ft SIN: 121EOIC0709D Bartlett Engineering and Surveying, PC PondPack Ver. 9.0041 Time: 4:07 PM Date: 2/2/2010 Type.... Runoff CN-Area Name.... SUBAREA 10 Page 4.01 File.... P:\-PROJECT FILES\Rolesville Middle School (M6)\POND\R1 PRE.PPW RUNOFF CURVE NUMBER DATA Impervious Area Adjustment Adjusted Soil/Surface Description CN ------ -------- acres %C RUC CN - ----------------- ---- Woods - fair 60 --------- 6.800 ----- ----- ------ 60.00 Brush - brush, weed, grass mix - fa 56 6.500 56.00 COMPOSITE AREA & WEIGHTED CN ---> 13.300 58.05 (58) SIN: 121EOIC0709D Bartlett Engineering and Surveying, PC PondPack Ver. 9.0041 Time: 4:07 PM Date: 2/2/2010 Appendix A Index of Starting Page Numbers for ID Names ----- S ----- SUBAREA 10... 3.01, 4.01 ----- W ----- Watershed... 1.01 WILSON... 2.01 A-1 SIN: 121E01C0709D Bartlett Engineering and Surveying, PC PondPack Ver. 9.0041 Time: 4:07 PM Date: 2/2/2010 Job File: P:\_PROJECT FILES\Rolesville Middle School (M6)\POND\R1 POSTREV.PPW Rain Dir: P:\-PROJECT FILES\Rolesville Middle School (M6)\POND\ JOB TITLE Project Date: 2/4/2009 Project Engineer: Robert S. Bartlett Project Title: Rolesville MS Project Comments: SIN: 121EOlC0709D Bartlett Engineering and Surveying, PC PondPack Ver. 9.0041 Time: 4:03 PM Date: 2/2/2010 Elev. vs. Time POND 10 OUT Dev 1 368.6 368.4 368.2 368.0 367.8 w 367.6 367.4 367.2 367.0 10 20 30 40 50 60 70 Time (hrs) POND 10 OUT Dev 1 80 90 100 110 Table of Contents Table of Contents i ++++*+++++++++++++++++ MASTER SUMMARY ++++++++++++++++++++++ Watershed....... Master Network Summary ............. 1.01 ****************** DESIGN STORMS SUMMARY ******************* WILSON.......... Design Storms ...................... 2.01 ++++++++++++++++++++++ TC CALCULATIONS +++++++++++++*+++++++ SUBAREA 10...... Tc Calcs ........................... 3.01 ++++++++++++++++*+++++ CN CALCULATIONS +++++++++++++++++++++ SUBAREA 10...... Runoff CN-Area ..................... 4.01 +++++++++++++++++++++++ TIME VS.ELEV +++++++++++++++++++++++ POND 10 OUT Dev 1 Time-Elev .......................... 5.01 +++++++++++++++++++++++ POND VOLUMES +++++++++++++++++++++++ POND 10......... Vol: Elev-Area ..................... 6.01 SIN: 121EOlC0709D Bartlett Engineering and Surveying, PC PondPack Ver. 9.0041 Time: 4:03 PM Date: 2/2/2010 Table of Contents Table of Contents (continued) ii ******************** OUTLET STRUCTURES ********************* Outlet 6........ Outlet Input Data .................. 7.01 Composite Rating Curve ............. 7.04 SIN: 121EOlC0709D Bartlett Engineering and Surveying, PC PondPack Ver. 9.0041 Time: 4:03 PM Date: 2/2/2010 Type.... Master Network Summary Page 1.01 Name.... Watershed File.... P:\-PROJECT FILES\Rolesville Middle School (M6)\POND\R1 POSTREV.PPW MASTER DESIGN STORM SUMMARY Network Storm Collection: WILSON Total Depth Return Event in Dev 1 3.0000 Dev 2 3.7500 Dev 10 5.8000 Dev 25 6.7500 Dev100 8.5000 Rainfall Type ---------------- Synthetic Curve Synthetic Curve Synthetic Curve Synthetic Curve Synthetic Curve RNF ID TypeII 24hr TypeII 24hr TypeII 24hr TypeII 24hr TypeII 24hr MASTER NETWORK SUMMARY SCS Unit Hydrograph method (*Node=Outfall; +Node=Diversion;) (Trun= HYG Truncation: Blank=None; L=Left; R=Rt; LR=Left&Rt) Return HYG Vol Node ----- ID ------ ------ Type - Event ac-ft Trun *OUT 10 --- JCT ------ 1 ---------- 1.300 *OUT 10 JCT 2 1.936 *OUT 10 JCT 10 3.864 *OUT 10 JCT 25 4.811 *OUT 10 JCT 100 6.605 POND 10 IN POND 1 1.318 POND 10 IN POND 2 1.954 POND 10 IN POND 10 3.882 POND 10 IN POND 25 4.830 POND 10 IN POND 100 6.625 POND 10 OUT POND 1 1.300 POND 10 OUT POND 2 1.936 POND 10 OUT POND 10 3.864 POND 10 OUT POND 25 4.811 POND 10 OUT POND 100 6.605 Max Qpeak Qpeak Max WSEL Pond Storage hrs --------- cfs -------- ft --- ac-ft 13.0000 1.91 ----- ------------ 12.3000 13.51 12.1000 49.85 12.1000 61.84 12.1000 84.21 12.1000 16.82 12.1000 25.25 12.1000 50.06 12.1000 61.93 12.1000 83.96 13.0000 1.91 368.51 .681 12.3000 13.51 368.69 .772 12.1000 49.85 368.86 .859 12.1000 61.84 368.90 .883 12.1000 84.21 368.98 .924 SIN: 121EOlC0709D Bartlett Engineering and Surveying, PC PondPack Ver. 9.0041 Time: 4:03 PM Date: 2/2/2010 Type.... Master Network Summary Page 1.02 Name.... Watershed File.... P:\-PROJECT FILES\Rolesville Middle School (M6)\POND\R1 POSTREV.PPW MASTER NETWORK SUMMARY SCS Unit Hydrograph Method (*Node=Outfall; +Node=Diversion;) (Trun= HYG Truncation: Blank=None; L=Left; R=Rt; LR=Left&Rt) Max Return HYG Vol Qpeak Qpeak Max WSEL Pond Storage Node ID -------- ------ Type Event --- ---- ------ ac-ft --------- Trun hrs cfs ft ac-ft SUBAREA 10 AREA 1 - 1.318 -- -------- 12.1000 - -------- -------- ------------ 16.82 SUBAREA 10 AREA 2 1.954 12.1000 25.25 SUBAREA 10 AREA 10 3.882 12.1000 50.06 SUBAREA 10 AREA 25 4.830 12.1000 61.93 SUBAREA 10 AREA 3.00 6.625 12.1000 83.96 SIN: 121E01C0709D Bartlett Engineering and Surveying, PC PondPack Ver. 9.0041 Time: 4:03 PM Date: 2/2/2010 Type.... Design Storms Page 2.01 Name.... WILSON File.... P:\_PROJECT FILES\Rolesville Middle School (M6)\POND\ Title... Project Date: 2/4/2009 Project Engineer: Robert S. Bartlett Project Title: Rolesville MS Project Comments: DESIGN STORMS SUMMARY Design Storm File,ID = WILSON Storm Tag Name = Dev 1 Data Type, File, ID = Synthetic Storm TypeII 24hr Storm Frequency = 1 yr Total Rainfall Depth= 3.0000 in Duration Multiplier = 1 Resulting Duration = 24.0000 hrs Resulting Start Time= .0000 hrs Step= .1000 hrs End= 24.0000 hrs Storm Tag Name = Dev 2 Data Type, File, ID = Synthetic Storm TypeII 24hr Storm Frequency = 2 yr Total Rainfall Depth= 3.7500 in Duration Multiplier = 1 Resulting Duration = 24.0000 hrs Resulting Start Time= .0000 hrs Step= .1000 hrs End= 24.0000 hrs Storm Tag Name = Dev 10 Data Type, File, ID = Synthetic Storm TypelI 24hr Storm Frequency = 10 yr Total Rainfall Depth= 5.8000 in Duration Multiplier = 1 Resulting Duration = 24.0000 hrs Resulting Start Time= .0000 hrs Step= .1000 hrs End= 24.0000 hrs Storm Tag Name = Dev 25 Data Type, File, ID = Synthetic Storm TypelI 24hr Storm Frequency = 25 yr Total Rainfall Depth= 6.7500 in Duration Multiplier = 1 Resulting Duration = 24.0000 hrs Resulting Start Time= .0000 hrs Step= .1000 hrs End= 24.0000 hrs Storm Tag Name = Dev100 Data Type, File, ID = Synthetic Storm TypeII 24hr Storm Frequency = 100 yr Total Rainfall Depth= 8.5000 in Duration Multiplier = 1 Resulting Duration = 24.0000 hrs Resulting Start Time= .0000 hrs Step= .1000 hrs End= 24.0000 hrs SIN: 121EOlC0709D Bartlett Engineering and Surveying, PC PondPack Ver. 9.0041 Time: 4:03 PM Date: 2/2/2010 Type.... Tc Calcs Name.... SUBAREA 10 Page 3.01 File.... P:\-PROJECT FILES\Rolesville Middle School (M6)\POND\R1 POSTREV.PPW .............................................................::::::::: TIME OF CONCENTRATION CALCULATOR Segment #1: Tc: SCS Lag Hydraulic Length 960.00 ft Runoff CN 79 Slope .027000 ft/ft Avg.Velocity .83 ft/sec Segment #1 Time: .3217 hrs ------------------------------------------------------------------------ Total Tc: .3217 hrs SIN: 121EOlC0709D Bartlett Engineering and Surveying, PC PondPack Ver. 9.0041 Time: 4:03 PM Date: 2/2/2010 Type.... Tc Calcs Name.... SUBAREA 10 Page 3.02 File.... P:\-PROJECT FILES\Rolesville Middle School (M6)\POND\Rl POSTREV.PPW ------------------------------------------------------------------------ Tc Equations used... ------------------------------------------------------------------------ ___= SCS Lag Tc = 0.000877 * (Lf**0.8) * ((10001CN) - 9)**0.7) * (Sf**-0.5) Where: Tc = Time of concentration, hrs Lf = Flow length, ft CN = SCS Curve Number Sf = Slope, ft/ft SIN: 121EOlC0709D Bartlett Engineering and Surveying, PC PondPack Ver. 9.0041 Time: 4:03 PM Date: 2/2/2010 Type.... Runoff CN-Area Name.... SUBAREA 10 Page 4.01 File.... P:\-PROJECT FILES\ROlesville Middle School (M6)\POND\R1 POSTREV.PPW RUNOFF CURVE NUMBER DATA Impervious Area Adjustment Adjusted Soil/Surface Description CN acres %C RUC CN -------------------------------- ---- --------- ----- ----- ------ Open space (Lawns,parks etc.) - Goo 61 6.670 61.00 Impervious Areas - Paved parking to 98 6.630 98.00 COMPOSITE AREA & WEIGHTED CN ---> 13.300 79.44 (79) SIN: 121EOlC0709D Bartlett Engineering and Surveying, PC PondPack Ver. 9.0041 Time: 4:03 PM Date: 2/2/2010 Type.... Time-Elev Page 5.01 Name.... POND 10 OUT Tag: Dev 1 Event: 1 yr File.... P:\_PROJECT FILES\Rolesville Middle School (M6)\POND\R1 POSTREV.PPW Storm... TypeII 24hr Tag: Dev 1 TIME vs. ELEVATION (ft) Time Output Time increment = .0500 hrs hrs ----- - -- Time on ----------- left represents - time for first value in each row. 10.0000 367.00 -------------- 367.00 ---------- 367.00 --------------- 367.00 ---------- 367.00 10.2500 367.00 367.00 367.00 367.00 367.00 10.5000 367.00 367.00 367.00 367.01 367.01 10.7500 367.01 367.01 367.01 367.01 367.01 11.0000 367.02 367.02 367.02 367.03 367.03 11.2500 367.03 367.04 367.04 367.05 367.05 11.5000 367.06 367.07 367.07 367.08 367.10 11.7500 367.12 367.15 367.19 367.26 367.35 12.0000 367.46 367.60 367.75 367.89 368.02 12.2500 368.12 368.20 368.27 368.32 368.37 12.5000 368.40 368.43 368.45 368.47 368.48 12.7500 368.49 368.50 368.50 368.51 368.51 13.0000 368.51 368.51 368.51 368.51 368.50 13.2500 368.50 368.50 368.50 368.50 368.49 13.5000 368.49 368.49 368.49 368.49 368.48 13.7500 368.48 368.48 368.48 368.47 368.47 14.0000 368.47 368.47 368.47 368.46 368.46 14.2500 368.46 368.46 368.46 368.45 368.45 14.5000 368.45 368.45 368.45 368.45 368.45 14.7500 368.45 368.44 368.44 368.44 368.44 15.0000 368.44 368.44 368.44 368.44 368.44 15.2500 368.44 368.43 368.43 368.43 368.43 15.5000 368.43 368.43 368.43 368.43 368.43 15.7500 368.43 368.43 368.42 368.42 368.42 16.0000 368.42 368.42 368.42 368.42 368.42 16.2500 368.42 368.42 368.42 368.41 368.41 16.5000 368.41 368.41 368.41 368.41 368.41 16.7500 368.41 368.41 368.41 368.41 368.41 17.0000 368.41 368.41 368.41 368.41 368.41 17.2500 368.41 368.41 368.41 368.40 368.40 17.5000 368.40 368.40 368.40 368.40 368.40 17.7500 368.40 368.40 368.40 368.40 368.40 18.0000 368.40 368.40 368.40 368.40 368.40 18.2500 368.40 368.40 368.40 368.40 368.40 18.5000 368.40 368.40 368.40 368.40 368.40 18.7500 368.40 368.39 368.39 368.39 368.39 19.0000 368.39 368.39 368.39 368.39 368.39 19.2500 368.39 368.39 368.39 368.39 368.39 19.5000 368.39 368.39 366.39 368.39 368.39 19.7500 368.39 368.38 368.38 368.38 368.38 20.0000 368.38 368.38 368.38 368.38 368.38 20.2500 368.38 368.38 368.38 368.38 368.38 20.5000 368.38 368.38 368.38 368.38 368.38 SIN: 121EOIC0709D Bartlett Engineering and Surveying, PC PondPack Ver. 9.0041 Time: 4:03 PM Date: 2/2/2010 Type.... Time-Elev Page 5.02 Name.... POND 10 OUT Tag: Dev 1 Event: 1 yr File.... P:\_PROJECT FILES\ROlesville Middle School (M6)\POND\Rl_POSTREV.PPW Storm... TypeII 24hr Tag: Dev 1 TIME vs. ELEVATION (ft) Time Output Time increment = .0500 hrs hrs --------- Time on left -------- represents time for first value in each row. 20.7500 ------- 368.38 ------------ 368.38 --------- 366.37 --------------- 368.37 ---------- 368.37 21.0000 368.37 368.37 368.37 368.37 368.37 21.2500 368.37 368.37 366.37 368.37 368.37 21.5000 368.37 368.37 366.37 368.37 368.37 21.7500 368.37 368.37 368.37 368.37 368.37 22.0000 368.37 368.37 368.37 368.37 368.37 22.2500 368.37 366.37 368.37 368.37 368.37 22.5000 368.37 368.37 368.37 368.37 368.37 22.7500 368.37 368.37 368.37 368.37 368.37 23.0000 368.37 368.37 368.37 368.37 368.37 23.2500 368.37 368.37 368.37 368.36 368.36 23.5000 368.36 368.36 368.36 368.36 368.36 23.7500 368.36 368.36 368.36 368.36 368.36 24.0000 368.36 368.36 368.36 368.36 368.36 24.2500 368.36 368.36 368.36 368.35 368.35 24.5000 368.35 368.35 368.35 368.34 368.34 24.7500 368.34 368.34 368.34 368.33 368.33 25.0000 368.33 368.33 368.32 368.32 368.32 25.2500 368.32 368.32 368.31 368.31 368.31 25.5000 368.31 368.31 368.30 368.30 368.30 25.7500 368.30 368.29 368.29 368.29 368.29 26.0000 368.29 368.28 368.28 368.28 368.28 26.2500 368.27 368.27 368.27 368.27 368.27 26.5000 368.26 368.26 368.26 368.26 368.26 26.7500 368.25 368.25 368.25 368.25 368.24 27.0000 368.24 368.24 368.24 368.24 368.23 27.2500 368.23 368.23 368.23 368.23 368.22 27.5000 368.22 368.22 368.22 368.22 368.21 27.7500 368.21 368.21 368.21 368.20 368.20 28.0000 368.20 368.20 368.20 368.19 368.19 28.2500 368.19 368.19 368.19 368.18 368.18 28.5000 368.18 368.18 368.18 368.17 368.17 28.7500 368.17 368.17 368.16 368.16 368.16 29.0000 368.16 368.16 368.15 368.15 368.15 29.2500 368.15 368.15 368.14 368.14 368.14 29.5000 368.14 368.14 368.13 368.13 368.13 29.7500 368.13 368.13 368.12 368.12 368.12 30.0000 368.12 368.12 368.11 368.11 368.11 30.2500 368.11 368.11 368.10 368.10 368.10 30.5000 368.10 368.10 368.09 368.09 368.09 30.7500 368.09 368.09 368.08 368.08 368.08 31.0000 I 368.08 368.08 368.07 368.07 368.07 31.2500 368.07 368.07 368.06 368.06 368.06 31.5000 368.06 368.06 368.05 368.05 368.05 SIN: 121EOlC0709D Bartlett Engineering and Surveying, PC PondPack Ver. 9.0041 Time: 4:03 PM Date: 2/2/2010 Type.... Time-Elev Page 5.03 Name.... POND 10 OUT Tag: Dev 1 Event: 1 yr File.... P:\_PROJECT FILES\Rolesville Middle School (M6)\POND\R1 POSTREV.PPW Storm... TypeII 24hr Tag: Dev 1 TIME vs. ELEVATION (ft) Time Output Time increment = .0500 hrs hrs --------- I- Time on left ------------- represents time for first value in each row. 31.7500 -- 368.05 ------------ 368.05 --------- 368.04 --------------- 368.04 ---------- 368.04 32.0000 368.04 368.04 368.03 368.03 368.03 32.2500 368.03 368.03 368.02 368.02 368.02 32.5000 368.02 368.02 368.01 368.01 368.01 32.7500 368.01 368.01 368.00 368.00 368.00 33.0000 368.00 368.00 367.99 367.99 367.99 33.2500 367.99 367.99 367.99 367.98 367.98 33.5000 367.98 367.98 367.98 367.97 367.97 33.7500 367.97 367.97 367.97 367.96 367.96 34.0000 367.96 367.96 367.96 367.95 367.95 34.2500 367.95 367.95 367.95 367.95 367.94 34.5000 367.94 367.94 367.94 367.94 367.93 34.7500 367.93 367.93 367.93 367.93 367.92 35.0000 367.92 367.92 367.92 367.92 367.92 35.2500 367.91 367.91 367.91 367.91 367.91 35.5000 367.90 367.90 367.90 367.90 367.90 35.7500 367.90 367.89 367.89 367.89 367.89 36.0000 367.89 367.88 367.88 367.88 367.88 36.2500 367.88 367.88 367.87 367.87 367.87 36.5000 367.87 367.87 367.86 367.86 367.86 36.7500 367.86 367.86 367.86 367.85 367.85 37.0000 367.85 367.85 367.85 367.84 367.84 37.2500 367.84 367.84 367.84 367.84 367.83 37.5000 367.83 367.83 367.83 367.83 367.83 37.7500 367.82 367.82 367.82 367.82 367.82 38.0000 367.81 367.81 367.81 367.81 367.81 38.2500 367.81 367.80 367.80 367.80 367.80 38.5000 367.80 367.80 367.79 367.79 367.79 38.7500 367.79 367.79 367.79 367.78 367.78 39.0000 367.78 367.78 367.78 367.78 367.77 39.2500 367.77 367.77 367.77 367.77 367.76 39.5000 367.76 367.76 367.76 367.76 367.76 39.7500 367.75 367.75 367.75 367.75 367.75 40.0000 367.75 367.74 367.74 367.74 367.74 40.2500 ( 367.74 367.74 367.73 367.73 367.73 40.5000 367.73 367.73 367.73 367.72 367.72 40.7500 367.72 367.72 367.72 367.72 367.71 41.0000 367.71 367.71 367.71 367.71 367.71 41.2500 367.71 367.70 367.70 367.70 367.70 41.5000 367.70 367.70 367.69 367.69 367.69 41.7500 367.69 367.69 367.69 367.68 367.68 42.0000 367.68 367.68 367.68 367.68 367.67 42.2500 367.67 367.67 367.67 367.67 367.67 42.5000 367.67 367.66 367.66 367.66 367.66 SIN: 121EOlC0709D Bartlett Engineering and Surveying, PC PondPack Ver. 9.0041 Time: 4:03 PM Date: 2/2/2010 Type.... Time-Elev Page 5.04 Name.... POND 10 OUT Tag: Dev 1 Event: 1 yr File.... P:\_PROJECT FILES\Rolesville Middle School (M6)\POND\R1 POSTREV.PPW Storm... TypeII 24hr Tag: Dev 1 TIME vs. ELEVATION (ft) Time Output Time increment = .0500 hrs hrs ---- ----- Time on left -- represents time for first value in each row. 42.7500 ------------- 367.66 ------------ 367.66 --- 367.65 ----- ---- 367.65 ---------- 367.65 43.0000 367.65 367.65 367.65 367.65 367.64 43.2500 367.64 367.64 367.64 367.64 367.64 43.5000 367.63 367.63 367.63 367.63 367.63 43.7500 367.63 367.63 367.62 367.62 367.62 44.0000 367.62 367.62 367.62 367.61 367.61 44.2500 367.61 367.61 367.61 367.61 367.61 44.5000 367.60 367.60 367.60 367.60 367.60 44.7500 367.60 367.60 367.59 367.59 367.59 45.0000 367.59 367.59 367.59 367.58 367.58 45.2500 367.58 367.58 367.58 367.58 367.58 45.5000 367.57 367.57 367.57 367.57 367.57 45.7500 367.57 367.57 367.56 367.56 367.56 46.0000 367.56 367.56 367.56 367.56 367.55 46.2500 367.55 367.55 367.55 367.55 367.55 46.5000 367.55 367.54 367.54 367.54 367.54 46.7500 367.54 367.54 367.54 367.53 367.53 47.0000 367.53 367.53 367.53 367.53 367.53 47.2500 367.53 367.52 367.52 367.52 367.52 47.5000 367.52 367.52 367.52 367.51 367.51 47.7500 367.51 367.51 367.51 367.51 367.51 48.0000 367.50 367.50 367.50 367.50 367.50 48.2500 367.50 367.50 367.50 367.49 367.49 48.5000 367.49 367.49 367.49 367.49 367.49 48.7500 367.48 367.48 367.48 367.48 367.48 49.0000 367.48 367.48 367.48 367.47 367.47 49.2500 367.47 367.47 367.47 367.47 367.47 49.5000 367.47 367.46 367.46 367.46 367.46 49.7500 367.46 367.46 367.46 367.46 367.45 50.0000 367.45 367.45 367.45 367.45 367.45 50.2500 367.45 367.45 367.44 367.44 367.44 50.5000 367.44 367.44 367.44 367.44 367.44 50.7500 367.43 367.43 367.43 367.43 367.43 51.0000 367.43 367.43 367.43 367.42 367.42 51.2500 367.42 367.42 367.42 367.42 367.42 51.5000 367.42 367.41 367.41 367.41 367.41 51.7500 367.41 367.41 367.41 367.41 367.40 52.0000 367.40 367.40 367.40 367.40 367.40 52.2500 367.40 367.40 367.40 367.39 367.39 52.5000 367.39 367.39 367.39 367.39 367.39 52.7500 367.39 367.38 367.38 367.38 367.38 53.0000 367.38 367.38 367.38 367.38 367.38 53.2500 367.37 367.37 367.37 367.37 367.37 53.5000 367.37 367.37 367.37 367.37 367.36 SIN: 121EOlC0709D Bartlett Engineering and Surveying, PC PondPack Ver. 9.0041 Time: 4:03 PM Date: 2/2/2010 Type.... Time-Elev Page 5.05 Name.... POND 10 OUT Tag: Dev 1 Event: 1 yr File.... P:\_PROJECT FILES\Rolesville Middle School (M6)\POND\R1 POSTREV.PPW Storm... TypeII 24hr Tag: Dev 1 TIME vs. ELEVATION (ft) Time Output Time increment = .0500 hrs hrs --- ---- Time on left --------------- represents time for first value in each row. 53.7500 367.36 ------------ 367.36 --------- 367.36 ------- 367.36 ---------- 367.36 54.0000 367.36 367.36 367.36 367.35 367.35 54.2500 367.35 367.35 367.35 367.35 367.35 54.5000 367.35 367.35 367.34 367.34 367.34 54.7500 367.34 367.34 367.34 367.34 367.34 55.0000 367.34 367.34 367.33 367.33 367.33 55.2500 367.33 367.33 367.33 367.33 367.33 55.5000 367.33 367.32 367.32 367.32 367.32 55.7500 367.32 367.32 367.32 367.32 367.32 56.0000 367.32 367.31 367.31 367.31 367.31 56.2500 367.31 367.31 367.31 367.31 367.31 56.5000 367.31 367.30 367.30 367.30 367.30 56.7500 367.30 367.30 367.30 367.30 367.30 57.0000 367.30 367.29 367.29 367.29 367.29 57.2500 367.29 367.29 367.29 367.29 367.29 57.5000 367.29 367.29 367.28 367.28 367.28 57.7500 367.28 367.28 367.28 367.28 367.28 58.0000 367.28 367.28 367.27 367.27 367.27 58.2500 367.27 367.27 367.27 367.27 367.27 58.5000 367.27 367.27 367.27 367.27 367.26 58.7500 367.26 367.26 367.26 367.26 367.26 59.0000 367.26 367.26 367.26 367.26 367.26 59.2500 367.25 367.25 367.25 367.25 367.25 59.5000 367.25 367.25 367.25 367.25 367.25 59.7500 367.25 367.25 367.24 367.24 367.24 60.0000 367.24 367.24 367.24 367.24 367.24 60.2500 367.24 367.24 367.24 367.24 367.24 60.5000 367.23 367.23 367.23 367.23 367.23 60.7500 367.23 367.23 367.23 367.23 367.23 61.0000 367.23 367.23 367.23 367.22 367.22 61.2500 367.22 367.22 367.22 367.22 367.22 61.5000 367.22 367.22 367.22 367.22 367.22 61.7500 367.22 367.22 367.22 367.21 367.21 62.0000 ( 367.21 367.21 367.21 367.21 367.21 62.2500 367.21 367.21 367.21 367.21 367.21 62.5000 367.21 367.21 367.21 367.21 367.20 62.7500 367.20 367.20 367.20 367.20 367.20 63.0000 I 367.20 367.20 367.20 367.20 367.20 63.2500 367.20 367.20 367.20 367.20 367.20 63.5000 367.20 367.20 367.19 367.19 367.19 63.7500 367.19 367.19 367.19 367.19 367.19 64.0000 367.19 367.19 367.19 367.19 367.19 64.2500 367.19 367.19 367.19 367.19 367.19 64.5000 367.18 367.18 367.18 367.18 367.18 SIN: 121EOlC0709D Bartlett Engineering and Surveying, PC PondPack Ver. 9.0041 Time: 4:03 PM Date: 2/2/2010 Type.... Time-Elev Page 5.06 Name.... POND 10 OUT Tag: Dev 1 Event: 1 yr File.... P:\_PROJECT FILES\Rolesville Middle School (M6)\POND\R1 POSTREV.PPW Storm... TypeII 24hr Tag: Dev 1 TIME vs. ELEVATION (ft) Time Output Time increment = .0500 hrs hrs -- --- - - Time on left ----------- represents time for first value in each row. 64.7500 ---- 367.18 ------------ 367.18 --------- 367.18 --------------- 367.18 ---------- 367.18 65.0000 367.18 367.18 367.18 367.18 367.18 65.2500 367.18 367.18 367.18 367.18 367.18 65.5000 367.18 367.17 367.17 367.17 367.17 65.7500 367.17 367.17 367.17 367.17 367.17 66.0000 367.17 367.17 367.17 367.17 367.17 66.2500 367.17 367.17 367.17 367.17 367.17 66.5000 367.17 367.17 367.17 367.17 367.16 66.7500 367.16 367.16 367.16 367.16 367.16 67.0000 ( 367.16 367.16 367.16 367.16 367.16 67.2500 367.16 367.16 367.16 367.16 367.16 67.5000 367.16 367.16 367.16 367.16 367.16 67.7500 367.16 367.16 367.16 367.16 367.16 68.0000 367.15 367.15 367.15 367.15 367.15 68.2500 367.15 367.15 367.15 367.15 367.15 68.5000 367.15 367.15 367.15 367.15 367.15 68.7500 367.15 367.15 367.15 367.15 367.15 69.0000 367.15 367.15 367.15 367.15 367.15 69.2500 367.15 367.15 367.15 367.14 367.14 69.5000 367.14 367.14 367.14 367.14 367.14 69.7500 367.14 367.14 367.14 367.14 367.14 70.0000 367.14 367.14 367.14 367.14 367.14 70.2500 367.14 367.14 367.14 367.14 367.14 70.5000 367.14 367.14 367.14 367.14 367.14 70.7500 367.14 367.14 367.14 367.14 367.14 71.0000 367.13 367.13 367.13 367.13 367.13 71.2500 367.13 367.13 367.13 367.13 367.13 71.5000 367.13 367.13 367.13 367.13 367.13 71.7500 367.13 367.13 367.13 367.13 367.13 72.0000 367.13 367.13 367.13 367.13 367.13 72.2500 367.13 367.13 367.13 367.13 367.13 72.5000 367.13 367.13 367.13 367.13 367.13 72.7500 367.13 367.12 367.12 367.12 367.12 73.0000 367.12 367.12 367.12 367.12 367.12 73.2500 367.12 367.12 367.12 367.12 367.12 73.5000 367.12 367.12 367.12 367.12 367.12 73.7500 367.12 367.12 367.12 367.12 367.12 74.0000 367.12 367.12 367.12 367.12 367.12 74.2500 367.12 367.12 367.12 367.12 367.12 74.5000 367.12 367.12 367.12 367.12 367.12 74.7500 367.12 367.12 367.12 367.11 367.11 75.0000 367.11 367.11 367.11 367.11 367.11 75.2500 367.11 367.11 367.11 367.11 367.11 75.5000 367.11 367.11 367.11 367.11 367.11 SIN: 121EOlC0709D Bartlett Engineering and Surveying, PC PondPack Ver. 9.0041 Time: 4:03 PM Date: 2/2/2010 Type.... Time-Elev Page 5.07 Name.... POND 10 OUT Tag: Dev 1 Event: 1 yr File.... P:\_PROJECT FILES\Rolesville Middle School (M6)\POND\R1 POSTREV.PPW Storm... TypeII 24hr Tag: Dev 1 TIME vs. ELEVATION (ft) Time Output Time increment = .0500 hrs hrs ---------- Time on left -------------- represents time for first value in each row. 75.7500 - 367.11 ------------ 367.11 --------- 367.11 -------------- 367.11 ----------- 367.11 76.0000 367.11 367.11 367.11 367.11 367.11 76.2500 367.11 367.11 367.11 367.11 367.11 76.5000 367.11 367.11 367.11 367.11 367.11 76.7500 367.11 367.11 367.11 367.11 367.11 77.0000 367.11 367.11 367.11 367.11 367.11 77.2500 367.11 367.11 367.10 367.10 367.10 77.5000 367.10 367.10 367.10 367.10 367.10 77.7500 367.10 367.10 367.10 367.10 367.10 78.0000 367.10 367.10 367.10 367.10 367.10 78.2500 367.10 367.10 367.10 367.10 367.10 78.5000 367.10 367.10 367.10 367.10 367.10 78.7500 367.10 367.10 367.10 367.10 367.10 79.0000 367.10 367.10 367.10 367.10 367.10 79.2500 367.10 367.10 367.10 367.10 367.10 79.5000 367.10 367.10 367.10 367.10 367.10 79.7500 367.10 367.10 367.10 367.10 367.10 80.0000 367.10 367.10 367.10 367.10 367.10 80.2500 367.10 367.10 367.09 367.09 367.09 80.5000 367.09 367.09 367.09 367.09 367.09 80.7500 367.09 367.09 367.09 367.09 367.09 81.0000 367.09 367.09 367.09 367.09 367.09 81.2500 367.09 367.09 367.09 367.09 367.09 81.5000 367.09 367.09 367.09 367.09 367.09 81.7500 367.09 367.09 367.09 367.09 367.09 82.0000 367.09 367.09 367.09 367.09 367.09 82.2500 367.09 367.09 367.09 367.09 367.09 82.5000 367.09 367.09 367.09 367.09 367.09 82.7500 367.09 367.09 367.09 367.09 367.09 83.0000 367.09 367.09 367.09 367.09 367.09 83.2500 367.09 367.09 367.09 367.09 367.09 83.5000 367.09 367.09 367.09 367.09 367.09 83.7500 367.09 367.09 367.08 367.08 367.08 84.0000 367.08 367.08 367.08 367.08 367.08 84.2500 367.08 367.08 367.08 367.08 367.08 84.5000 367.08 367.08 367.08 367.08 367.08 84.7500 367.08 367.08 367.08 367.08 367.08 85.0000 367.08 367.06 367.08 367.08 367.08 85.2500 367.08 367.08 367.08 367.08 367.08 85.5000 367.08 367.08 367.08 367.08 367.08 85.7500 367.08 367.08 367.08 367.08 367.08 86.0000 367.08 367.08 367.08 367.08 367.06 86.2500 367.08 367.08 367.08 367.08 367.08 86.5000 367.08 367.08 367.08 367.08 367.08 SIN: 121EOIC0709D Bartlett Engineering and Surveying, PC PondPack Ver. 9.0041 Time: 4:03 PM Date: 2/2/2010 Type.... Time-Elev Page 5.06 Name.... POND 10 OUT Tag: Dev 1 Event: 1 yr File.... P:\_PROJECT FILES\ROlesville Middle School (M6)\POND\R1 POSTREV.PPW Storm... TypeII 24hr Tag: Dev 1 TIME vs. ELEVATION (ft) Time Output Time increment = .0500 hrs hrs -------- Time on left --------- represents time for first value in each row. 86.7500 ------ 367.08 ------------ 367.08 --------- 367.08 --------------- 367.08 ---------- 367.08 87.0000 367.08 367.08 367.08 367.06 367.08 87.2500 367.08 367.08 367.08 367.08 367.08 87.5000 367.06 367.08 367.08 367.08 367.08 87.7500 367.08 367.08 367.08 367.08 367.08 88.0000 367.08 367.08 367.07 367.07 367.07 88.2500 367.07 367.07 367.07 367.07 367.07 88.5000 367.07 367.07 367.07 367.07 367.07 88.7500 367.07 367.07 367.07 367.07 367.07 89.0000 367.07 367.07 367.07 367.07 367.07 89.2500 367.07 367.07 367.07 367.07 367.07 89.5000 367.07 367.07 367.07 367.07 367.07 89.7500 367.07 367.07 367.07 367.07 367.07 90.0000 367.07 367.07 367.07 367.07 367.07 90.2500 367.07 367.07 367.07 367.07 367.07 90.5000 367.07 367.07 367.07 367.07 367.07 90.7500 367.07 367.07 367.07 367.07 367.07 91.0000 367.07 367.07 367.07 367.07 367.07 91.2500 367.07 367.07 367.07 367.07 367.07 91.5000 367.07 367.07 367.07 367.07 367.07 91.7500 367.07 367.07 367.07 367.07 367.07 92.0000 367.07 367.07 367.07 367.07 367.07 92.2500 367.07 367.07 367.07 367.07 367.07 92.5000 367.07 367.07 367.07 367.07 367.07 92.7500 367.07 367.07 367.07 367.07 367.07 93.0000 367.07 367.07 367.07 367.07 367.07 93.2500 367.07 367.07 367.07 367.07 367.07 93.5000 367.07 367.06 367.06 367.06 367.06 93.7500 367.06 367.06 367.06 367.06 367.06 94.0000 367.06 367.06 367.06 367.06 367.06 94.2500 367.06 367.06 367.06 367.06 367.06 94.5000 367.06 367.06 367.06 367.06 367.06 94.7500 367.06 367.06 367.06 367.06 367.06 95.0000 367.06 367.06 367.06 367.06 367.06 95.2500 ( 367.06 367.06 367.06 367.06 367.06 95.5000 367.06 367.06 367.06 367.06 367.06 95.7500 367.06 367.06 367.06 367.06 367.06 96.0000 367.06 367.06 367.06 367.06 367.06 96.2500 367.06 367.06 367.06 367.06 367.06 96.5000 367.06 367.06 367.06 367.06 367.06 96.7500 367.06 367.06 367.06 367.06 367.06 97.0000 367.06 367.06 367.06 367.06 367.06 97.2500 367.06 367.06 367.06 367.06 367.06 97.5000 367.06 367.06 367.06 367.06 367.06 SIN: 121EOIC0709D Bartlett Engineering and Surveying, PC PondPack Ver. 9.0041 Time: 4:03 PM Date: 2/2/2010 Type.... Time-Elev Page 5.09 Name.... POND 10 OUT Tag: Dev 1 Event: 1 yr File.... P:\_PROJECT FILES\Rolesville Middle School (M6)\POND\R1 POSTREV.PPW Storm... TypeII 24hr Tag: Dev 1 TIME vs. ELEVATION (ft) Time Output Time increment = .0500 hrs hrs ---- ---- Time on left --------------- represents -------- time for first value in each row. 97.7500 367.06 ---- 367.06 --------- 367.06 --------------- 367.06 ---------- 367.06 98.0000 367.06 367.06 367.06 367.06 367.06 98.2500 367.06 367.06 367.06 367.06 367.06 98.5000 367.06 367.06 367.06 367.06 367.06 98.7500 367.06 367.06 367.06 367.06 367.06 99.0000 367.06 367.06 367.06 367.06 367.06 99.2500 367.06 367.06 367.06 367.06 367.06 99.5000 367.06 367.06 367.06 367.06 367.06 99.7500 367.06 367.06 367.06 367.06 367.06 100.0000 367.06 367.06 367.06 367.06 367.06 100.2500 367.06 367.06 367.06 367.06 367.06 100.5000 367.06 367.06 367.06 367.06 367.06 100.7500 367.06 367.06 367.06 367.06 367.06 101.0000 367.06 367.05 367.05 367.05 367.05 101.2500 367.05 367.05 367.05 367.05 367.05 101.5000 367.05 367.05 367.05 367.05 367.05 101.7500 367.05 367.05 367.05 367.05 367.05 102.0000 367.05 367.05 367.05 367.05 367.05 102.2500 367.05 367.05 367.05 367.05 367.05 102.5000 367.05 367.05 367.05 367.05 367.05 102.7500 367.05 367.05 367.05 367.05 367.05 103.0000 367.05 367.05 367.05 367.05 367.05 103.2500 367.05 367.05 367.05 367.05 367.05 103.5000 367.05 367.05 367.05 367.05 367.05 103.7500 367.05 367.05 367.05 367.05 367.05 104.0000 367.05 367.05 367.05 367.05 367.05 104.2500 367.05 367.05 367.05 367.05 367.05 104.5000 367.05 367.05 367.05 367.05 367.05 104.7500 367.05 367.05 367.05 367.05 367.05 105.0000 367.05 367.05 367.05 367.05 367.05 105.2500 367.05 367.05 367.05 367.05 367.05 105.5000 367.05 367.05 367.05 367.05 367.05 105.7500 367.05 367.05 367.05 367.05 367.05 106.0000 367.05 367.05 367.05 367.05 367.05 106.2500 367.05 367.05 367.05 367.05 367.05 106.5000 367.05 367.05 367.05 367.05 367.05 106.7500 367.05 367.05 367.05 367.05 367.05 107.0000 367.05 367.05 367.05 367.05 367.05 107.2500 367.05 367.05 367.05 367.05 367.05 107.5000 367.05 367.05 367.05 367.05 367.05 107.7500 367.05 367.05 367.05 367.05 367.05 108.0000 367.05 367.05 367.05 367.05 367.05 108.2500 367.05 367.05 367.05 367.05 367.05 108.5000 367.05 367.05 367.05 367.05 367.05 SIN: 121EOlC0709D Bartlett Engineering and Surveying, PC PondPack Ver. 9.0041 Time: 4:03 PM Date: 2/2/2010 Type.... Time-Elev Page 5.10 Name.... POND 10 OUT Tag: Dev 1 Event: 1 yr File.... P:\_PROJECT FILES\Rolesville Middle School (M6)\POND\R1 POSTREV.PPW Storm... TypeII 24hr Tag: Dev 1 TIME vs. ELEVATION (ft) Time Output Time increment = .0500 hrs hrs ---------- Time on left --------------- represents time for first value in each row. 108.7500 367.05 ----------- 367.05 ---------- 367.05 --------------- 367.05 ---------- 367.05 109.0000 367.05 367.05 367.05 367.05 367.05 109.2500 367.05 367.05 367.05 367.05 367.05 109.5000 367.05 367.05 367.05 367.05 367.05 109.7500 367.05 367.05 367.05 367.05 367.05 110.0000 367.05 SIN: 121E01C0709D Bartlett Engineering and Surveying, PC PondPack Ver. 9.0041 Time: 4:03 PM Date: 2/2/2010 Type.... Vol: Elev-Area Name.... POND 10 Page 6.01 File.... P:\-PROJECT FILES\Rolesville Middle School (M6)\POND\R1 POSTREV.PPW Elevation Planimeter Area Al+A2+sgr(Al*A2) Volume Volume Sum (ft) ------------ (sq.in) ------------ (acres) --------- (acres) ---------- --- - (ac-ft) (ac-ft) 367.00 ----- .3726 -- - .0000 --------- .000 ------------- .000 367.50 ----- .4484 1.2297 .205 .205 368.00 ----- .4728 1.3816 .230 .435 368.35 ----- .4901 1.4443 .169 .604 368.50 ----- .4976 1.4815 .074 .678 369.00 ----- .5229 1.5306 .255 .933 369.50 ----- .5487 1.6072 .268 1.201 370.00 ----- .5749 1.6852 .281 1.482 POND VOLUME EQUATIONS * Incremental volume computed by the Conic Method for Reservoir Volumes. Volume = (1/3) * (EL2-EL1) * (Areal + Area2 + sq.rt.(Areal*Area2)) where: EL1, EL2 = Lower and upper elevations of the increment Areal,Area2 = Areas computed for EL1, EL2, respectively Volume = Incremental volume between EL1 and EL2 SIN: 121EOIC0709D Bartlett Engineering and Surveying, PC PondPack Ver. 9.0041 Time: 4:03 PM Date: 2/2/2010 Type.... Outlet Input Data Page 7.01 Name.... Outlet 6 File.... P:\-PROJECT FILES\Rolesville Middle School (M6)\POND\R1 POSTREV.PPW REQUESTED POND WS ELEVATIONS: Min. Elev.= 367.00 ft Increment = .05 ft Max. Elev.= 370.00 ft OUTLET CONNECTIVITY ---> Forward Flow Only (UpStream to DnStream) *--- Reverse Flow Only (DnStream to UpStream) < --- > Forward and Reverse Both Allowed Structure No. Outfall E1, ft E2, ft Weir-Rectangular WR ---> TW 368.600 370.000 Inlet Box IB ---> CV 368.350 370.000 Orifice-Circular 01 ---> CV 367.000 370.000 Culvert-Circular CV ---> TW 360.850 370.000 TW SETUP, DS Channel SIN: 121EOlC0709D Bartlett Engineering and Surveying, PC PondPack Ver. 9.0041 Time: 4:03 PM Date: 2/2/2010 Type.... Outlet Input Data Name.... Outlet 6 Page 7.02 File.... P:\-PROJECT FILES\Rolesville Middle School (M6)\POND\R1 POSTREV.PPW OUTLET STRUCTURE INPUT DATA Structure ID = WR Structure Type = Weir-Rectangular ------------------------------------ # of openings = 1 Crest Elev. = 368.60 ft Weir Length = 110.00 ft Weir Coeff. = 2.800000 Weir TW effects (Use adjustment equation) Structure ID = IB Structure Type ------ = Inlet Box ----------- # of Openings ------------- = 1 ------ Invert Elev. = 368.35 ft Orifice Area = 2.8000 sq.ft Orifice Coeff. _ .600 Weir Length = 9.30 ft Weir Coeff. = 2.800 K, Submerged = .000 K, Reverse = 1.000 Kb,Barrel .000000 (per ft of full flow) Barrel Length = .00 ft Mannings n = .0000 Structure ID = 01 Structure Type = Orifice-Circular ------------------------------------ # of Openings = 1 Invert Elev. = 367.00 ft Diameter = .2500 ft Orifice Coeff. _ .600 SIN: 121EOlC0709D Bartlett Engineering and Surveying, PC PondPack Ver. 9.0041 Time: 4:03 PM Date: 2/2/2010 Type.... Outlet Input Data Name.... Outlet 6 Page 7.03 File.... P:\-PROJECT FILES\Rolesville Middle School (M6)\POND\R1 POSTREV.PPW OUTLET STRUCTURE INPUT DATA Structure ID = CV Structure Type ---------- = Culvert-Circular -------- No. Barrels ----------- = 1 ------- Barrel Diameter 1.5000 ft Upstream Invert = 360.85 ft Dnstream Invert = 360.53 ft Horiz. Length = 64.00 ft Barrel Length = 64.00 ft Barrel Slope = .00500 ft/ft OUTLET CONTROL DATA.. . Mannings n = .0150 Ke = .5000 Kb = .024249 Kr = .5000 HW Convergence = .001 INLET CONTROL DATA... Equation form = 1 Inlet Control K = .0045 Inlet Control M 2.0000 Inlet Control c = .03170 Inlet Control Y = .6900 T1 ratio (HW/D) = 1.093 T2 ratio (HW/D) = 1.195 Slope Factor = -.500 (forward entrance loss) (per ft of full flow) (reverse entrance loss) +/- ft Use unsubmerged inlet control Form 1 equ. below T1 elev. Use submerged inlet control Form 1 equ. above T2 elev. In transition zone between unsubmerged and submerged inlet control, interpolate between flows at T1 & T2... At T1 Elev = 362.49 ft ---> Flow = 7.58 cfs At T2 Elev = 362.64 ft ---> Flow = 8.66 cfs Structure ID = TW Structure Type = TW SETUP, DS Channel ------------------------------------ FREE OUTFALL CONDITIONS SPECIFIED CONVERGENCE TOLERANCES... Maximum Iterations= 30 Min. TW tolerance = .01 ft Max. TW tolerance = .01 ft Min. HW tolerance = .01 ft Max. HW tolerance = .01 ft Min. Q tolerance = .10 cfs Max. Q tolerance = .10 cfs SIN: 121EOIC0709D Bartlett Engineering and Surveying, PC PondPack Ver. 9.0041 Time: 4:03 PM Date: 2/2/2010 Type.... Composite Rating Curve Name.... Outlet 6 Page 7.04 File.... P:\-PROJECT FILES\Rolesville Middle School (M6)\POND\R1 POSTREV.PPW ***** COMPOSITE OUTFLOW SUMMARY **** WS Elev, Total Q Notes -------- -------- ----- --- Converge ----------- -- ------------ Elev. Q TW E lev Error ft -------- cfs ------- f ----- t +/-ft --- Contributing Structures 367.00 .00 Free ----- Outfall ------------ (no Q: WR, -- IB ------------ ,OI,CV) 367.05 .00 Free Outfall 01,CV (no Q: WR,IB) 367.10 .02 Free Outfall 01,CV (no Q: WR,IB) 367.15 .03 Free Outfall 01,CV (no Q: WR,IB) 367.20 .06 Free Outfall 01,CV (no Q: WR,IB) 367.25 .08 Free Outfall 01,CV (no Q: WR,IB) 367.30 .10 Free Outfall 01,CV (no Q: WR,IB) 367.35 .11 Free Outfall 01,CV (no Q: WR,IB) 367.40 .12 Free Outfall 01,CV (no Q: WR,IB) 367.45 .13 Free Outfall 01,CV (no Q: WR,IB) 367.50 .14 Free Outfall 01,CV (no Q: WR,IB) 367.55 .15 Free Outfall 01,CV (no Q: WR,IB) 367.60 .16 Free Outfall 01,CV (no Q: WR,IB) 367.65 .17 Free Outfall 01,CV (no Q: WR,IB) 367.70 .18 Free Outfall 01,CV (no Q: WR,IB) 367.75 .19 Free Outfall 01,CV (no Q: WR,IB) 367.80 .19 Free Outfall 01,CV (no Q: WR,IB) 367.85 .20 Free Outfall 01,CV (no Q: WR,IB) 367.90 .21 Free Outfall 01,CV (no Q: WR,IB) 367.95 .21 Free Outfall 01,CV (no Q: WR,IB) 368.00 .22 Free Outfall 01,CV (no Q: WR,IB) 368.05 .23 Free Outfall 01,CV (no Q: WR,IB) 368.10 .23 Free Outfall 01,CV (no Q: WR,IB) 368.15 .24 Free Outfall 01,CV (no Q: WR,IB) 368.20 .24 Free Outfall 01,CV (no Q: WR,IB) 368.25 .25 Free Outfall 01,CV (no Q: WR,IB) 368.30 .26 Free Outfall 01,CV (no Q: WR,IB) 368.35 .26 Free Outfall 01,CV (no Q: WR,IB) 368.40 .56 Free Outfall IB,OI,CV ( no Q: WR) 368.45 1.10 Free Outfall IB,01,CV ( no Q: WR) 368.50 1.79 Free Outfall IB,OI,CV ( no Q: WR) 368.55 2.61 Free Outfall IB,01,CV ( no Q: WR) 368.60 3.54 Free Outfall IB,OI,CV ( no Q: WR) 368.65 8.01 Free Outfall WR,IB,OI,CV 368.70 15.43 Free Outfall WR,IB,OI,CV 368.75 24.78 Free Outfall WR,IB,OI,CV 368.80 35.71 Free Outfall WR,IB,OI,CV 368.85 48.02 Free Outfall WR,IB,OI,CV SIN: 121EOlC0709D Bartlett Engineering and Surveying, PC PondPack Ver. 9.0041 Time: 4:03 PM Date: 2/2/2010 Type.... Composite Rating Curve Name.... Outlet 6 Page 7.05 File.... P:\-PROJECT FILES\Rolesville Middle School (M6)\POND\R1 POSTREV.PPW * **** COMPOSITE OUTFLOW SUMMARY **** WS Elev, Total Q Notes -------- -------- -------- Converge Elev. Q TW Elev Error ft -------- cfs ------- ft +/-ft ----- Contributing Structures 368.90 60.92 - Free -- ----- Outfall -------------------------- WR,IB,01,CV 368.95 74.54 Free Outfall WR,IB,01,CV 369.00 89.11 Free Outfall WR,IB,01,CV 369.05 104.57 Free Outfall WR,IB,01,CV 369.10 120.90 Free Outfall WR,IB,01,CV 369.15 138.02 Free Outfall WR,IB,01,CV 369.20 155.91 Free Outfall WR,IB,01,CV 369.25 174.53 Free Outfall WR,IB,01,CV 369.30 193.86 Free Outfall WR,IB,01,CV 369.35 213.88 Free Outfall WR,IB,01,CV 369.40 234.55 Free Outfall WR,IB,01,CV 369.45 255.86 Free Outfall WR,IB,01,CV 369.50 277.79 Free Outfall WR,IB,01,CV 369.55 300.31 Free Outfall WR,IB,01,CV 369.60 323.44 Free Outfall WR,IB,01,CV 369.65 347.12 Free Outfall WR,IB,01,CV 369.70 371.38 Free outfall WR,IB,01,CV 369.75 396.16 Free Outfall WR,IB,01,CV 369.80 421.48 Free Outfall WR,IB,01,CV 369.85 447.34 Free Outfall WR,IB,01,CV 369.90 473.69 Free outfall WR,IB,01,CV 369.95 500.56 Free Outfall WR,IB,01,CV 370.00 527.91 Free Outfall WR,IB,01,CV SIN: 121E01C0709D Bartlett Engineering and Surveying, PC PondPack Ver. 9.0041 Time: 4:03 PM Date: 2/2/2010 Appendix A Index of Starting Page Numbers for ID Names ----- 0 ----- Outlet 6... 7.01, 7.04 ----- P ----- POND 10... 6.01 POND 10 OUT Dev 1... 5.01 ----- S ----- SUBAREA 10... 3.01, 4.01 ----- W ----- Watershed... 1.01 WILSON... 2.01 A-1 SIN: 121EOlC0709D Bartlett Engineering and Surveying, PC PondPack Ver. 9.0041 Time: 4:03 PM Date: 2/2/2010