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HomeMy WebLinkAbout20090554 Ver 1_More Info Received_200909141 O -?5 q s? BARTLETT eINc & suWNc, K 1906 Nash Street North Wilson, NC 27893-1726 September 11, 2009 Phone: (252) 399-0704 Fax: (252) 399-0804 R @@IN Mr? n NC DWQ 401 /Wetlands Unit SEP 1 4 2009 1650 :tail Service Center. Suite 250 DENR - (WATER QUALITY Raleigh, NC 27699-1650 WETIAWSANDSTORMWYATERBRANCH REFERENCE: OLDE MILL STREAM, ROCKY MOUNT, NC -NASH CO To Whom It May Concern: Please find herewith, 5 copies of revised plans, revised PCN, and supporting documentation for the above referenced project. The Corps of Engineers asked us to show all of the wetland impacts for the site including the outfall for the sewer line that is being permitted by the City of Rocky Mount under NWP12. Request for more information was addressed as follows: 1. Phase 1 of the project will be under 24% impervious. Curb cuts were added to replace pipe outfalls that will discharge to vegetative swales that outlet to either a drainage ditch or will discharge through level spreaders before entering Tar-Pamlico buffers. Also, where storm drainage piping could not be eliminated, it was redirected to discharge to a stormwater detention pond (calculations attached) for treatment before discharging to a level spreader. 2. A table of discharge points (either curb cut or pipe outlet) with impervious areas is attached at the back of the low density and bmp supplements. 3. A conceptual stormwater management plan for the future areas with supporting calculations appear on the last sheet (labeled "SNIP") of the construction plans. 4. The construction plans were modified along Halifax road that will eliminate the ditch north of the main entrance to the subdivision. This will provide sheet flow across the future lot 214 before entering the buffer. If you have any questions or need additional information, please contact our office. Thank you. Sincerely, r nat n Le? IN tea e onmental Specialist Enclosure OF W A rFR .' > ?ir1 y I pl? 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 1a. Type(s) of approval sought from the Corps: ®Section 404 Permit El Section 10 Permit 1b. Specify Nationwide Permit (NWP) number: 29 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 1e. 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: Olde Mill Stream D 0 q F 2b. County: Nash 2c. Nearest municipality / town: Rocky Mount SEP 4 2009 2d. Subdivision name: Olde Mill Stream DENR • WATER QUALITY 2e. NCDOT only, T.I.P. or state project no: N/A WETUNDSANDSTORMWATO BRAKH 3. Owner Information 3a. Name(s) on Recorded Deed: Hodge-Morris, LLC 3b. Deed Book and Page No. 2162, 770 3c. Responsible Party (for LLC if applicable): Ralph Hodge 3d. Street address: 1708 Trawick Rd, Suite 209 3e. City, state, zip: Raleigh, NC 27604 3f. Telephone no.: 252-237-3663 3g. Fax no.: 252-206-5789 3h. Email address: Page 1 of 12 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 12 B. Project Information and Prior Project History 1. Property Identification 1a. Property identification no. (tax PIN or parcel ID): 3830-18-31-0386 and 3830-18-31-1671 1 b. Site coordinates (in decimal degrees): Latitude: 35.94791 Longitude: - 77.87581 (DD.DDDDDD) (-DD.DDDDDD) 1 c. Property size: 93.8 acres 2. Surface Waters 2a. Name of nearest body of water (stream, river, etc.) to Maple Creek proposed project: 2b. Water Quality Classification of nearest receiving water: WS-IV; NSW 2c. River basin: Tar-Pamlico 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 93.8 acre site is partially wooded, mainly cropland farmstead with one stream/wetland feature on the east side and one stream/wetland feature (Maple Creek) on the south side. Bounded on the east by Halifax Rd. Most of the surrounding area is agricultural. 3b. List the total estimated acreage of all existing wetlands on the property: 15.75 acres 3c. List the total estimated linear feet of all existing streams (intermittent and perennial) on the property: 5259 LF 3d. Explain the purpose of the proposed project: Residential Subdivision 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 and installation of roads and utilities for subdivision. Access to the main portion of the property will require a perpendicular crossing of a stream/wetland feature. Equipment used will include backhoes, motor graders, dumptrucks, etc. 4. Jurisdictional Determinations 4a. Have jurisdictional wetland or stream determinations by the Corps or State been requested or obtained for this property / ED 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: ESI Name (if known): Jamie Shearn/Jeff Harbour(ESI) Other: 4d. If yes, list the dates of the Corps jurisdictional determinations or State determinations and attach documentation. Signed JD 2/22/08 by Jamie Shearn-12/02/05 Buffer Determination by Mike Horan 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 12 PCN Form - Version 1.3 December 10, 2008 Version B. Project Information and Prior Project History 6. Future Project Plans 6a. Is this a phased project? ® Yes ? No 6b. If yes, explain. The site will be divided into four residential phases. Phase 1 consists of the perpendicular access crossing and utility tie- in (No other impacts are expected in the remaining phases). The main sewer outfall line installation and associated wetland impacts and permits will be conducted by the City of Rocky Mount under NWP12 and is also accounted for on our PCN submittal. The overall plan has been reviewed by the City of Rocky Mount with preliminary approval. Page 4 of 12 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 - non404, other) (acres) Temporary T W1 ®P ? T Fill/Access ® Yes ® Corps 0 086 Crossing ? No ? DWQ . W2 ? P ®T Utility Crossing ® Yes ? No ® Corps ? DWQ 0.12 W3 ? P ®T Utility Crossing ® Yes ? No ® Corps ? DWQ 0.07 W4 ? P ®T Utility Crossing ® Yes ? No ® Corps ? DWQ 0.12 W5 ? P ? T ? Yes ? Corps ? No ? DWQ W6 ? P ? T ? Yes ? Corps ? No ? DWQ 2g. Total wetland impacts 0.396 2h. Comments: Main sewer line outfall to also be permitted by City of Rocky Mount (under their construction) will have a total of 0.31 acres of temporary wetland impacts (W2,W3,W4) under NWP12 associated with this property-designed to avoid wetlands and excessively deep manholes. 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 Maple Crk ? PER ® INT ® Corps ? DWQ 2 90 S2 ? P ? T ? PER ? Corps ? INT ? DWQ 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 90 LF 3i. Comments: Page 5 of 12 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 individual) list all open water impacts below. 4a. 4b. 4c. 4d. 4e. Open water Name of waterbody impact number - (if applicable) Type of impact Waterbody type Area of impact (acres) Permanent (P) or Temporary T 01 ?P?T 02 ?P?T 03 ?P?T 04 ?P?T 0. Total open water impacts 4g. Comments: 5. Pond or Lake Construction If and or lake construction proposed, then complete the chart below. 5a. 5b. 5c. 5d. 5e. Wetland Impacts (acres) Stream Impacts (feet) Upland Pond ID Proposed use or purpose (acres) number of pond Flooded Filled Excavated Flooded Filled Excavated Flooded P1 P2 5f. Total 5g. Comments: 5h. Is a dam high hazard permit required? ? Yes ? No If yes, permit ID no: 5i. Expected pond surface area (acres): 5j. Size of pond watershed (acres): 5k. Method of construction: 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 impact Stream name mitigation (square feet) (square feet) Temporary T required? 61 ®P ? T Access UT to Maple Crk ® Nos 5359 3585 B2 ?P?T ?Yes ? No 133 ?P?T ?Yes ? No 6h. Total buffer impacts 5359 3585 6i. Comments. Main utility line permitting and installation conducted by the City of Rocky Mount under NWP12 (exempt) Page 6 of 12 D. Impact Justification and Mitigation 1. Avoidance and Minimization 1 a. Specifically describe measures taken to avoid or minimize the proposed impacts in designing project. Site was configured to perpendicularly cross wetland and buffer zones at one location to access site. Utility line by City of Rocky Mount designed to avoid wetlands and Tar-Pamlico buffers and avoid excessively deep manholes. 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. For utility line (City of Rocky Mount) the impacts will only be temporary with mats used along with appropriate erosion control measures to minimize impacts and restored to original grade. 2. Compensatory Mitigation for Impacts to Waters of the U.S. or Waters of the State 2a. Does the project require Compensatory Mitigation for impacts to Waters of the U.S. or Waters of the State? ? Yes ® No 2b. If yes, mitigation is required by (check all that apply): ? DWQ ? Corps 2c. If yes, which mitigation option will be used for this project? ? Mitigation bank El Payment to in-lieu fee program ? Permittee Responsible Mitigation 3. Complete if Using a Mitigation Bank 3a. Name of Mitigation Bank: 3b. Credits Purchased (attach receipt and letter) Type Quantity 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. Page 7 of 12 PCN Form - Version 1.3 December 10, 2008 Version 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 12 E. Stormwater Management and Diffuse Flow Plan (required by DWQ) 1. Diffuse Flow Plan 1a. 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 prior to entering buffer zone. 2. Stormwater Management Plan 2a. What is the overall percent imperviousness of this project? 23.0% for Phase 1 2b. Does this project require a Stormwater Management Plan? ? Yes ® No 2c. If this project DOES NOT require a Stormwater Management Plan, explain why: Phase 1 will discharge runoff from curb openings to vegetative swales before discharging through level spreaders and vegetative filters at buffer areas. A stormwater detention pond will treat runoff from a piped system (5.92 acres of the interior of phase 1 lots and roadways). Subsequent phases will require the use of detention ponds and/or other BMP's to achieve peak flow and nutrient reduction. 2d. If this project DOES require a Stormwater Management Plan, then provide a brief, na rrative description of the plan: ? Certified Local Government 2e. Who will be responsible for the review of the Stormwater Management Plan? ? DWO Stormwater Program ® DWQ 401 Unit 3. Certified Local Government Stormwater Review 3a. In which local government's jurisdiction is this project? City of Rocky Mount ? Phase II 3b. Which of the following locally-implemented stormwater management programs ® NSW ? USMP apply (check all that apply): ® Water Supply Watershed ? Other: 3c. Has the approved Stormwater Management Plan with proof of approval been ? Yes ® No attached? Stormwater Plan not required for Phase 1 with overall impervious approx. 7% and Phase 1 impervious 23.0%. Additional phases will require stormwater BMP's for peak flow and nutrient reduction. (See attached letter from City of Rocky Mount) 4. DWQ Stormwater Program Review ? Coastal counties ? HOW 4a. Which of the following state-implemented stormwater management programs apply ? ORW (check all that apply): ? Session Law 2006-246 ? Other: 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 Page 9 of 12 PCN Form - Version 1.3 December 10, 2008 Version C. Stormwater Management and Diffuse Flow Plan (required by DWQ), continued 5b. Have all of the 401 Unit submittal requirements been met? ? Yes ? No Page 10 of 12 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)? 1c. 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 letter.) ? Yes ? No 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 2B .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 11 of 12 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? F1 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? NC stream classification 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? ® es ? No 8b. If yes, explain how project meets FEMA requirements: BUA will not be located in the 100 yr floodplain 8c. What source(s) did you use to make the floodplain determination? FEMA maps C)l Robert S. Bartlett 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 12 of 12 Permit No. State of North Carolina Department of Environment and Natural Resources Division of Water Quality (to be provided by DWQ) STORMWATER MANAGEMENT PERMIT APPLICATION FORM LOW DENSITY SUPPLEMENT This form may be photocopied for use as an original A low density project is one that meets the appropriate criteria for built upon area and transports stormwater runoff primarily through vegetated conveyances. Low density projects should not have a discrete stormwater collection system as defined by 15A NCAC 2H .1002(18). Low density requirements and density factors can be found in Session Law 2008-211, 15A NCAC 2H 1000, Session Law 2006-246, and the DWQ BMP Manual. Curb and gutter systems are allowed provided they meet the requirements in 15A NCAC 2H .1008(g). 1. PROJECT INFORMATION Project Name : Olde Mill Stream Contact Person: Jon Meade Phone Number: (252 )399-0704 Number of Lots:62 Allowable Built Upon Area (BUA) Per Lot*:3168 SF Number of Dwelling Units Per Acre**: Low Density Development (check one): ? without curb & gutter ® with curb & gutter, outlets to (check one): ® Swales ? Vegetated Area *If lot sizes are not uniform, attach a table indicating the number of lots, lot sizes and allowable built upon area for each lot. The attachment must include the project name, phase, page numbers and provide area subtotals and totals. BUA shall be shown in units of square feet. **(Phase II Post-Construction (non-SA) only) II. BUILT UPON AREA Refer to DWQ's forms and applications website for specific language that must be recorded in the deed restrictions for all subdivided projects. (http://h2o.enr.state.nc.us/su/bmp_forms.htm) Complete the following calculation in the space provided below where: • SA Site Area - the total project area above Mean High Water. • DF Density Factor - the appropriate percent built upon area divided by 100. • RA Road Area - the total impervious surface occupied by roadways. • OA Other Area -the total area of impervious surfaces such as clubhouses, tennis courts, sidewalks, etc. • No. of Lots - the total number of lots in the subdivision. • BUA per Lot - the computed allowable built upon area for each lot including driveways and impervious surfaces located between the front lot line and the edge of pavement. • Total allowable lot BUA - the computed allowable built upon area for all lots combined. • Total BUA from lot listing - the sum of built upon area allocated for each lot on the list of non-uniform lots. Form SW401-Low Density-Rev. 3-2/10/09 Page 1 of 4 V. SWALE SYSTEM MAINTENANCE REQUIREMENTS Mowing will be accomplished as needed according to the season. Grass height will not exceed six inches at any time; and grass will not be mowed too close to the ground or "scalped". 2. Swales will be inspected monthly or after every runoff producing rainfall event for sediment build-up, erosion, and trash accumulation. 3. Accumulated sediment and trash will be removed as necessary. Swales will be reseeded or sodded following sediment removal. 4. Eroded areas of the swales will be repaired and reseeded. Swales will be revegetated as needed and in a timely manner based on the monthly inspections. Side slopes must be maintained at the permitted slope. 5. Catch basins, curb cuts, velocity reduction devices, and piping will be inspected monthly or after every significant runoff producing rainfall event. Trash and debris will be cleared away from grates, curb cuts, velocity reduction devices and piping. 6. Swales will not be altered, piped, or filled in without approval from NCDENR Division of Water Quality. I acknowledge and agree by my signature below that I am responsible for the performance of the six 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. Print Name and Title:Ralph Hodge-Owner Address: 1708 Trawick Rd, Raleigh, NC 27604 Signature: Date: II DY 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, rte: se C?g r'-s , a NotaryPublic for the State of N c: ,% Caro 1'. n a , County of W .1, do hereby certify that P-- P ?N VjV d qe personally appeared before me this k_1 day of be(fte fkPer , J o aq , and acknowledge the due execution of the forgoing swale maintenance requirements. Witness my hand and official seal, Notary signature SEAL My commission expires O t" Q0 - )o t 1 Form SW401-Low Density-Rev.3-2/10/09 Page 4 of 4 Permit FWA NCDENR 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. (to be provided by DWO) o? 0F W A T F151 r o -? I. PROJECT INFORMATION Project name OLDE MILL STREAM (PHASE 1) Contact person Jon Meade Phone number 252-399-0704 Date Drainage area number 8/27/2009 II. DESIGN INFORMATION Site Characteristics Drainage area Impervious area, post-development % impervious Design rainfall depth 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 1 yr 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 1 Oft vegetated shelf elevation Bottom of 1 Oft 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 268,142 ft3 114,451 ftz 42.68 % 1.0 in 9,701 ft3 OK 9,935 ft3 OK, volume provided is equal to or in excess of volume required. _ft3 _ft3 _ft3 0 ft3 ft3 (Y or N) 3.2 in 0.60 (unitless) 0.80 (unitless) 1.57 in/hr OK 5.90 ft3/sec 1.79 ft3/sec A.11 ft3/sec 120.30 fmsl 119.50 fmsl 118.00 fmsl 120.00 fmsl 119.00 fmsl 114.75 fmsl 113.75 fmsl 1.00 ft (Y or N) 120.3 fmsl OK Form SW401-Wet Detention Basin-Rev.7-8/13/09 Paris I. 8 11. Design Summary, Page 1 of 2 Permit (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 Shee No. 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. " ' or larger) and details for the wet detention basin showing: 2. Partial plan (1 = 30 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 O_ Filter strip. " ' = 20 or larger) showing: 3. Section view of the wet detention basin 0 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, to verify volume provided. 6. A construction sequence that shows how the wet detention basin will be protected from sediment ntil the "ac"V Seth"Jc°n? a entire draina e area is stabilized ? C Pond -6 he o ed v s ` em ? g . 5 ? / ? 7 Th ti l l ti cIaI7? . e suppor ng ca cu a ons. 8. A copy of the signed and notarized operation and maintenance (0&M) agreement. 9. A copy of the deed restrictions (if required). V 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.7-8/13/09 Part III. Required Items Checklist, Page 1 of 1 Permit Number: (to be provided by DWQ) Drainage Area Number: Wet Detention Basin Operation and Maintenance Agreement I will keep a maintenance record on this BMP. This maintenance record will be kept in a log in a known set location. Any deficient BMP elements noted in the inspection will be corrected, repaired or replaced immediately. These deficiencies can affect the integrity of structures, safety of the public, and the removal efficiency of the BMP. The wet detention basin system is defined as the wet detention basin, pretreatment including forebays and the vegetated filter if one is provided. This system (check one): ® does ? does not This system (check one): ? does ® does not incorporate a vegetated filter at the outlet. incorporate pretreatment other than a forebay. Important maintenance procedures: - Immediately after the wet detention basin is established, the plants on the vegetated shelf and perimeter of the basin should be watered twice weekly if needed, until the plants become established (commonly six weeks). - No portion of the wet detention pond should be fertilized after the first initial fertilization that is required to establish the plants on the vegetated shelf. - Stable groundcover should be maintained in the drainage area to reduce the sediment load to the wet detention basin. - If the basin must be drained for an emergency or to perform maintenance, the flushing of sediment through the emergency drain should be minimized to the maximum extent practical. - Once a year, a dam safety expert should inspect the embankment. After the wet detention pond is established, it should be inspected once a month and within 24 hours after every storm event greater than 1.0 inches (or 1.5 inches if in a Coastal County). Records of operation and maintenance should be kept in a known set location and must be available upon request. Inspection activities shall be performed as follows. Any problems that are found shall be repaired immediately. BMP element: Potential problem: How I will remediate the problem: The entire BMP Trash/ debris is resent. Remove the trash/ debris. The perimeter of the wet Areas of bare soil and/or Regrade the soil if necessary to detention basin erosive gullies have formed. remove the gully, and then plant a ground cover and water until it is established. Provide lime and a one-time fertilizer application. Vegetation is too short or too Maintain vegetation at a height of long. approximately six inches. Form SW401-Wet Detention Basin O&M-Rev.4 Page 1 of 4 Permit Number: (to be provided by DWQ) Drainage Area Number: BMP element: Potential problem: How I will remediate the problem: The inlet device: pipe or The pipe is clogged. Unclog the pipe. Dispose of the swale sediment off-site. The pipe is cracked or Replace the pipe. otherwise damaged. Erosion is occurring in the Regrade the swale if necessary to swale. smooth it over and provide erosion control devices such as reinforced turf matting or riprap to avoid future problems with erosion. The forebay Sediment has accumulated to Search for the source of the a depth greater than the sediment and remedy the problem if original design depth for possible. Remove the sediment and sediment storage. dispose of it in a location where it will not cause impacts to streams or the BMP. Erosion has occurred. Provide additional erosion protection such as reinforced turf matting or riprap if needed to prevent future erosion problems. Weeds are present. Remove the weeds, preferably by hand. If pesticide is used, wipe it on the plants rather than spraying. The vegetated shelf Best professional practices Prune according to best professional show that pruning is needed practices to maintain optimal plant health. Plants are dead, diseased or Determine the source of the dying. problem: soils, hydrology, disease, etc. Remedy the problem and replace plants. Provide a one-time fertilizer application to establish the ground cover if a soil test indicates it is necessary. Weeds are present. Remove the weeds, preferably by hand. If pesticide is used, wipe it on the plants rather than spraying- The main treatment area Sediment has accumulated to Search for the source of the a depth greater than the sediment and remedy the problem if original design sediment possible. Remove the sediment and storage depth. dispose of it in a location where it will not cause impacts to streams or the BMP. Algal growth covers over Consult a professional to remove 50% of the area. and control the algal growth. Cattails, phragmites or other Remove the plants by wiping them invasive plants cover 50% of with pesticide (do not spray). the basin surface. Form SW401-Wet Detention Basin O&M-Rev.4 Page 2 of 4 Permit Number: (to be provided by DWQ) Drainage Area Number: BMP element: Potential problem: How I will remediate the problem: The embankment Shrubs have started to grow Remove shrubs immediately. on the embankment. Evidence of muskrat or Use traps to remove muskrats and beaver activity is present. consult a professional to remove beavers. A tree has started to grow on Consult a dam safety specialist to the embankment. remove the tree. An annual inspection by an Make all needed repairs. appropriate professional shows that the embankment needs repair. if applicable) The outlet device Clogging has occurred. Clean out the outlet device. Dispose of the sediment off-site. The outlet device is damaged Repair or replace the outlet device. The receiving water Erosion or other signs of Contact the local NC Division of damage have occurred at the Water Quality Regional Office, or outlet. the 401 Oversight Unit at 919-733- 1786. The measuring device used to determine the sediment elevation shall be such that it will give an accurate depth reading and not readily penetrate into accumulated sediments. When the permanent pool depth reads 4.75 feet in the main pond, the sediment shall be removed. When the permanent pool depth reads 4.0 feet in the forebay, the sediment shall be removed. BASIN DIAGRAM ill in the blanks) Sediment Removal Bottom Permanent Pool Elevation 119.50 115.50 YPe anen•--- --------olume 114.50 in. ediment Storage FOREBAY Pool \ - - - - - - Sediment Removal Elevation-114.75 .......... Volume Bottom Elevation 113.75 j 1-ft MAIN POND Storage Form SW401-Wet Detention Basin O&M-Rev.4 Page 3 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:OLDE MILL STREAM BMP drainage area number:DETENTION POND Print name:Ralph Hodge Title:President Address: 1708 Trawick Rd Suite 209 Raleigh NC 27604 Phone:252-237-3663 Signature: Date: 1 I D 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, ? se C 29b , a Notary Public for the State of h1tpA-, 'p.« 1: n"_ , County of W 15?-r_ , do hereby certify that P_"_QVh yx. 'd. personally appeared before me this day of 5e?-?-,,oiler Qooq , and acknowledge the due execution of the forgoing wet detention basin maintenance requirements. Witness my hand and official seal, SEAL My commission expires Form SW401-Wet Detention Basin O&M-Rev.4 Page 4 of 4 NCDENR O2QF W ATE9Q O 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 OLDE MILL STREAM Contact name JON MEADE Phone number 252-399-0704 Date May 26, 2009 Drainage area number LEVEL SPREADER#1 II. DESIGN INFORMATION For Level Spreaders Receiving Flow From a BMP Type of BMP Vegetated Swale Drawdown flow from the BMP cfs For Level Spreaders Receiving Flow from the Drainage Area Drainage area 15,934.00 ftz Impervious surface area 14,326.00 ft2 Percent impervious 89.91 % Rational C coefficient 0.85 Peak flow from the 1 in/hr storm 0.31 cfs Time of concentration 7.10 min Rainfall intensity, 10-yr storm 6.9 in/hr Peak flow from the 10-yr storm 2.15 cfs Where Does the Level Spreader Discharge? To a grassed bioretention cell? N (Y or N) To a mulched bioretention cell? N (Y or N) To a wetland? Y (Y or N) Please complete filter strip characterization below. To a filter strip or riparian buffer? Y (Y or N) Please complete filter strip characterization below Other (specify) Filter Strip or Riparian Buffer Characterization (if applicable) Width of grass ft Width of dense ground cover 83.00 ft Width of wooded vegetation ft Total width 83.00 ft Elevation at downslope base of level lip 117.63 fmsl Elevation at top of bank of the receiving water 116.70 fmsl Slope (from level lip to to top of bank) 1.12 % OK Are any draws present? N (Y or N) OK Level Spreader Design Forebay surface area sq ft Feet of level lip needed per cfs 13 ft/cfs Answer "Y" to one of the following: Length based on the 1 in/hr storm? N (Y or N) Length based on the 10-yr storm? Y (Y or N) Length based on the BMP discharge rate? N (Y or N) Design flow 3.20 cfs Is a bypass device provided? N (Y or N) A bypass device is not needed. Form SW401-Level Spreader, Filter Strip, Restored Riparian Buffer-Rev.5 Parts I. and It. 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 32.00 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 • t •--- M M Form SW401-Level Spreader, Filter Strip, Restored Riparian Buffer-Rev.5 Parts I. and II. Design Summary, page 2 of 2 NCDENR O?0F Yq A?Tf;9 ONi? ? 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 OLDE MILL STREAM Contact name JON MEADE Phone number 252-399-0704 Date May 26, 2009 Drainage area number LEVEL SPREADER#2 II. DESIGN INFORMATION For Level Spreaders Receiving Flow From a BMP Type of BMP Vegetated Swale 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 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) N (Y or N) N (Y or N) Y (Y or N) Please complete filter strip characterization below. Y (Y or N) Please complete filter strip characterization below. Width of grass ft Width of dense ground cover 46.00 ft Width of wooded vegetation 12.00 ft Total width 58.00 ft Elevation at downslope base of level lip 128.43 fmsl Elevation at top of bank of the receiving water 125.34 fmsl Slope (from level lip to to top of bank) 5.33 % Are any draws present? N (Y or N) Level Spreader Design Forebay surface area sq ft Feet of level lip needed per cfs 24 ft/cfs Answer "Y" to one of the following: Length based on the 1 in/hr storm? N (Y or N) Length based on the 10-yr storm? Y (Y or N) Length based on the BMP discharge rate? N (Y or N) Design flow 1.20 cfs Is a bypass device provided? N (Y or N) 11,325.00 ft2 9,845.00 ft2 86.93 % 0.90 0.23 cfs 5.40 min 7.5 in/hr 1.75 cfs OK OK A bypass device is not needed Form SW401-Level Spreader, Filter Strip, Restored Riparian Buffer-Rev.5 Parts I. and ll. Design Summary, page 1 of 2 Length of the level lip 42.00 ft Level spreader length OK. Are level spreaders in series? N (Y or N) Bypass Channel Design (if applicable) Does the bypass discharge through a wetland? (Y or N) Do not complete this section of the worksheet Does the channel enter the stream at an angle? (Y or N) Do not complete this section of the worksheet. Dimensions of the channel (see diagram below): Do not complete this section of the worksheet M ft Do not complete this section of the worksheet B ft Do not complete this section of the worksheet W ft Do not complete this section of the worksheet. y ft Do not complete this section of the worksheet Peak velocity in the channel during the 10-yr storm cfs Do not complete this section of the worksheet Channel lining material Do not complete this section of the worksheet • W • t •------ ------- Y t --------------• M M B Form SW401-Level Spreader, Filter Strip, Restored Riparian Buffer-Rev.5 Parts I. and II. Design Summary, page 2 of 2 ?*A'A' NCDENR ?oE?w A?T ?9?c > IILJ_ O 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 OLDE MILL STREAM Contact name JON MEADE Phone number 252-399-0704 Date May 26, 2009 Drainage area number LEVEL SPREADER#3 II. DESIGN INFORMATION For Level Spreaders Receiving Flow From a BMP Type of BMP Detention Pond Drawdown flow from the BMP 3.83 cis For Level Spreaders Receiving Flow from the Drainage Area Do not complete this section of the worksheet Drainage area ft2 Do not complete this section of the worksheet Impervious surface area ftz Do not complete this section of the worksheet Percent impervious % Do not complete this section of the worksheet Rational C coefficient Do not complete this section of the worksheet Peak flow from the 1 in/hr storm cfs Do not complete this section of the worksheet Time of concentration min Rainfall intensity, 10-yr storm in/hr Do not complete this section of the worksheet Peak flow from the 10-yr storm CIS Do not complete this section of the worksheet Where Does the Level Spreader Discharge ? To a grassed bioretention cell? N (Y or N) To a mulched bioretention cell? N (Y or N) To a wetland? Y (Y or N) Please complete filter strip characterization below. To a filter strip or riparian buffer? Y (Y or N) Please complete filter strip characterization below Other (specify) Filter Strip or Riparian Buffer Characterization (if applicable) Width of grass ft Width of dense ground cover 50.00 ft Width of wooded vegetation ft Total width 50.00 ft Elevation at downslope base of level lip 121.33 fmsl Elevation at top of bank of the receiving water 120.49 fmsl Slope (from level lip to to top of bank) 1.68 % OK Are any draws present? N (Y or N) OK Level Spreader Design Forebay surface area sq ft No forebay is needed Feet of level lip needed per cfs 13 ft/cfs Answer "Y" to one of the following: Length based on the 1 in/hr storm? N (Y or N) Length based on the 10-yr storm? Y (Y or N) Length based on the BMP discharge rate? Y (Y or N) Design flow 3.10 cfs Is a bypass device provided? n (Y or N) 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 cfs Do not complete this section of the worksheet Do not complete this section of the worksheet t U7 ------------ M 42.00 ft #VALUE! 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 B / 1 ------------- M Form SW401-Level Spreader, Filter Strip, Restored Riparian Buffer-Rev.5 Parts I. and Il. Design Summary, page 2 of 2 I. REMURM RM t 6K{ 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 o? 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), - 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 or larger) for the level spreader showing: = 30 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. L S 3. Section view of the level spreader (1" = 20' or larger) showing: Underdrain system (if applicable), Level lip, Upslope channel, and Downslope filter fabric. + 4. A date-stamped photograph of the filter strip that clearly shows the type of vegetation that is present. _JI 5. A construction sequence that shows how the level spreader will be protected from sediment until the entire drainage area is stabilized. UP f'ahc? ??na s 5fa ?. ?I??v?a ?eyl?uc Lr'cr/ S?i,^ey? ?Y • /? /1 AD 6 Th ti l l i 4 . e suppor ng ca cu ons. at A 7. A copy of the signed and notarized operation and maintenance (0&M) agreement. ) 8. A copy of the deed restrictions (if required). Form SW401-Level Spreader, Filter Strip, Restored Riparian Buffer-Rev-5 Part III, page 1 of 1 Permit Number: (to be provided by DWQ) Drainage Area Number: Filter Strip, Restored Riparian Buffer and Level Spreader Operation and Maintenance Agreement I will keep a maintenance record on this BMP. This maintenance record will be kept in a log in a known set location. Any deficient BMP elements noted in the inspection will be corrected, repaired or replaced immediately. These deficiencies can affect the integrity of structures, safety of the public, and the removal efficiency of the BMP. Important maintenance procedures: - Immediately after the filter strip is established, any newly planted vegetation will be watered twice weekly if needed until the plants become established (commonly six weeks). - Once a year, the filter strip will be reseeded to maintain a dense growth of vegetation - Stable groundcover will be maintained in the drainage area to reduce the sediment load to the vegetation. - Two to three times a year, grass filter strips will be mowed and the clippings harvested to promote the growth of thick vegetation with optimum pollutant removal efficiency. Turf grass should not be cut shorter than 3 to 5 inches and may be allowed to grow as tall as 12 inches depending on aesthetic requirements (NIPC,1993). Forested filter strips do not require this type of maintenance. - Once a year, the soil will be aerated if necessary. - Once a year, soil pH will be tested and lime will be added if necessary. After the filter strip is established, it will be inspected quarterly and within 24 hours after every storm event greater than 1.0 inch (or 1.5 inches if in a Coastal County). Records of operation and maintenance will be kept in a known set location and will be available upon request. Inspection activities shall be performed as follows. Any problems that are found shall be repaired immediately. BMP element: Potential problem: How I will remediate the problem: The entire filter strip Trash/debris is present. Remove the trash/debris. system The flow splitter device The flow splitter device is Unclog the conveyance and dispose (if applicable) clogged. of an sediment off-site. The flow splitter device is Make any necessary repairs or damaged. replace if damage is too large for repair. Form SWU401-Level Spreader, Filter Strip, Restored Riparian Buffer O&M-Rev.3 Page 1 of 3 BMP element: Potential problem: How I will remediate the problem: The swale and the level The swale is clogged with Remove the sediment and dispose lip sediment. of it off-site. The level lip is cracked, Repair or replace lip. settled, undercut, eroded or otherwise damaged. There is erosion around the Regrade the soil to create a berm end of the level spreader that that is higher than the level lip, and shows stormwater has then plant a ground cover and bypassed it. water until it is established. Provide lime and a one-time fertilizer application. Trees or shrubs have begun Remove them. to grow on the swale or just downslo e of the level lip. The bypass channel Areas of bare soil and/or Regrade the soil if necessary to erosive gullies have formed. remove the gully, and then reestablish proper erosion control. Turf reinforcement is Study the site to see if a larger damaged or ripap is rolling bypass channel is needed (enlarge if downhill. necessary). After this, reestablish the erosion control material. The filter strip Grass is too short or too long Maintain grass at a height of if applicable). approximately three to six inches. Areas of bare soil and/or Regrade the soil if necessary to erosive gullies have formed. remove the gully, and then plant a ground cover and water until it is established. Provide lime and a one-time fertilizer application. Sediment is building up on Remove the sediment and the filter strip. restabilize the soil with vegetation if necessary. Provide lime and a one- time fertilizer application. Plants are desiccated. Provide additional irrigation and fertilizer as needed. Plants are dead, diseased or Determine the source of the dying. problem: soils, hydrology, disease, etc. Remedy the problem and replace plants. Provide a one-time fertilizer application. Nuisance vegetation is Remove vegetation by hand if choking out desirable species. possible. If pesticide is used, do not allow it to get into the receiving water. The receiving water Erosion or other signs of Contact the NC Division of Water damage have occurred at the Quality local Regional Office, or the outlet. 401 Oversight Unit at 919-733-1786. Form SWU401-Level Spreader, Filter Strip, Restored Riparian Buffer O&M-Rev.3 Page 2 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 party. Project name:Olde Mill Steam BMP drainage area number:Level Spreader #l, Level Spreader #2, Level Spreader #3 Print name:Ralph Hodge Title: Hodpe-Morns, LLC (Owner) Address: 1709 Trawick Rd. Suite 209 Raleigh NC 27604 Phone:252-237-3663, Signature. Date: 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, b?r?se l ROC. , a Notary Public for the State of County of W do hereby certify that k.& ph 4-dae_ personally appeared before me this 114L. day of 5eZ?er&b r r ,Eck 9 , and acknowledge the due execution of the forgoing filter strip, riparian buffer, and/or level spreader maintenance requirements. Witness my hand and official seal, SEAL My commission expires Form SWU401-Level Spreader, Filter Strip, Restored Riparian Buffer O&M-Rev.3 Page 3 of 3 DRAINAGE AREA-IMPERVIOUS INVENTORY DRAINAGE IMPERVIOUS AREAS MANAGED AREA TOTAL ROOF/BUILDINGS ROAD/DRIVEWAYS OPEN SPACE %IMP CC#1 /S#1 14326 3635 10692 1608 89.91% CC#2 7819 1984 5835 1528 83.65% CC#3 13136 3333 9803 3503 78.95% CC#4S#2 5955 1511 4444 0 100.00% CC#5/S#3 27194 6899 20295 28789 48.58% CC#6/S#4 9846 2498 7348 0 100.00% DET. POND 113133 28702 84431 144307 43.95% OLDE MILL STREAM Rocky Mount, NC STORM WATER POND (Phase 1) PRELIMINARY CALCULATIONS Septetg4er 9, 2009 y SEAL 20106 ( : ntr ) BARTLETT SIG & SllFiVEYNG, PC 1906 Nash Street North Wilson, NC 27893-1726 Phone: (252) 399-0704 Fax: (252) 399-0804 Ruben'u hartleuene-rnm OLDE MILL STREAM PHASE 1 DETENTION POND VOLUMES STORMWATER POND VOLUMES POND VOLUME (BELOW PERMANENT POOL-NO FOREBAY) ELEVATION AREA INCR. VOL. CUM. AVG. (FT) (FT2) (CU FT CU FT) 114.8 1629 0 0.00 115.0 1860 435.84 435.84 115.3 2104 495.04 930.88 115.5 2361 557.71 1488.59 116.0 2892 1312.49 2801.08 117.0 4003 3447.78 6248.86 118.0 5192 4597.83 10846.69 119.0 6447 5818.56 16665.25 119.5 8699 3785.94 20451.19 FOREBAY VOLUMES ELEVATION AREA INCR. VOL. CUM. AVG. FT FT2 (CU FT (CU FT 114.5 400 0 0.00 115.5 601 500.10 500.10 116.5 834 717.06 1217.16 117.5 1099 966.04 2183.20 118.5 1396 1247.01 3430.21 119.5 1724 1560.00 4990.21 POND VOLUMES ABOVE PERMANENT POOL ELEVATION AREA INCR. VOL. CUM. AVG. FT FT2 (CU FT (CU FT 119.5 10422.00 0 0.00 120.0 13186.00 5902.02 5902.02 120.3 13705.00 4033.71 9935.73 120.5 14054.00 2775.91 12711.64 121.0 14681.00 7248.44 19960.08 L U a co a? cc 3 E `o U) 0 U z E O LL Q O C14 1- LO c CO c (D 0I,- LO 0 N I- LM N cv) M H U-) N V 00 co M O6 z O O O O N Q D 0) Q w N 'z V ?v c ' a o Q E 0 s a _0 0 0 O N `?- N L o N J E o + N E 0 o w a L + a 0 ov n O O LO o Ln ? € f rn o v CL a LO r r- 00 O H N 't C,4 C,4 O 00 T Lfl a LO N O LU w (1) z z U) _ a WWw0 w a W m N CL m =aWW Q W w w U Wv a0 0 Z Qi< waLZ --W aWD~ LL._Ivw -S ry a0w--I ww0OjO0- _ W <(1) owwZJwW_Z ? w O w 0 0~ w w? 00 = O W N d Z? g p w 9 aU Ua 00 a Z Q 0 z 0 w WaLLLL?n:>U a O?2<-Cnu)wo?o0o0 0 0 n LL LL 0 D II N 0 r w D U 0O U) > C) w0 C? 00 Q Q m p z Q D 0) CC) LL CA J W `- Z) w m a ?I W LL Q U N Q z a W Q' N o a z a m ?W z op a O F- Z W 10 Olde Mill Stream Subdivision- Rocky Mount, NC STORMWATER POND PRELIMINARY CALCULATIONS PREDEVELOPED POST DEVELOPED RETURN EVENT PEAK RUN-OFF PEAK RUN-OFF REDUCTION (YEARS) (CFS CFS 1 5.56 1.59 71.4 2 7.28 4.69 35.6 10 15.36 19.57 -27.4 25 21.62 26.05 -20.5 100 29.86 34.98 -17.1 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 I-yr storm event. Elevation: 119.50' to 121.70' top of dike Maximum Elevation: 120.68' for a 100-yr storm event with 1.0'+ freeboard Inlet Box: Crest Elevation 120.3' Inlet Box- 24"x36" Barrel: Free Outfall Diameter = 1.0' Emergency Weir Elevation 120.50' Length=140' Orifice Structure : One opening Invert Elevation 119.50' Diameter = 1.75" Drawdown Time: Approximately 70 hrs (Type 11 24hr 1-yr storm event) Job File: P:\_PROJECT FILES\halilfax road\POND\OMS401_PRE.PPW Rain Dir: P:\ PROJECT FILES\halilfax road\POND\ -------------------------- -------------------------- JOB TITLE -------------------------- -------------------------- Project Date: 8/24/2009 Project Engineer: Robert S. Bartlett Project Title: Watershed Project Comments: SIN: 121EOlC0709D Bartlett Engineering and Surveying, PC PondPack Ver. 9.0041 Time: 12:51 PM Date: 9/2/2009 Table of Contents Table of Contents i +++*++++++++++++++++++ MASTER SUMMARY ++++++++++++++++++++++ watershed....... Master Network Summary ............. 1.01 ****************** DESIGN STORMS SUMMARY ******************* ROCKY MT........ Design Storms ...................... 2.01 ++++++++++++++++++++++ TC CALCULATIONS +++++++++++++++++++++ SUBAREA 10...... Tc Calcs ........................... 3.01 ++++++++++++++++++++++ CN CALCULATIONS +++++++++++++++++++++ SUBAREA 10...... Runoff CN-Area ..................... 4.01 SIN: 121EOlC0709D Bartlett Engineering and Surveying, PC PondPack Ver. 9.0041 Time: 12:51 PM Date: 9/2/2009 Type.... Master Network Summary Page 1.01 Name.... Watershed File.... P:\-PROJECT FILES\halilfax road\POND\OMS401 PRE.PPW MASTER DESIGN STORM SUMMARY Network Storm Collection: ROCKY MT Total Depth Rainfall Re -- turn Ev ------- ent in --- Type RNF ID Pre 1 ------ 3.2000 ---------------- Synthetic Curve ------- TypeII --------- 24hr Pre 2 3.6000 Synthetic Curve TypeII 24hr Pre 10 5.2800 Synthetic Curve TypeII 24hr Pre 25 6.4800 Synthetic Curve TypeII 24hr Pre100 8.0000 Synthetic Curve TypeII 24hr MASTER NETWORK SUMMARY SCS Unit Hydrograph Meth od (*Node=Outfall; +Node=Divers ion;) (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 *OUT 10 JCT 1 - -- - .458 -------- 12.1000 -------- 5.56 -------- ------------ *OUT 10 JCT 2 .585 12.1000 7.28 *OUT 10 JCT 10 1.190 12.1000 15.36 *OUT 10 JCT 25 1.670 12.1000 21.62 *OUT 10 JCT 100 2.312 12.1000 29.86 SUBAREA 10 AREA 1 .458 12.1000 5.56 SUBAREA 10 AREA 2 .585 12.1000 7.28 SUBAREA 10 AREA 10 1.190 12.1000 15.36 SUBAREA 10 AREA 25 1.670 12.1000 21.62 SUBAREA 10 AREA 100 2.312 12.1000 29.86 SIN: 121EOlC0709D Bartlett Engineering and Surveying, PC PondPack Ver. 9.0041 Time: 12:51 PM Date: 9/2/2009 Type.... Design Storms Page 2.01 Name.... ROCKY MT File.... P:\ PROJECT FILES\halilfax road\POND\ Title... Project Date: 8/24/2009 Project Engineer: Robert S. Bartlett Project Title: Watershed Project Comments: DESIGN STORMS SUMMARY Design Storm File,ID = ROCKY MT Storm Tag Name = Pre 1 Data Type, File, ID = Synthetic Storm TypeII 24hr Storm Frequency = 1 yr Total Rainfall Depth= 3.2000 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= 3.6000 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= 5.2800 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 Typell 24hr Storm Frequency = 25 yr Total Rainfall Depth= 6.4800 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= 8.0000 in Duration Multiplier = 1 Resulting Duration = 24.0000 hrs Resulting Start Time= .0000 hrs Step= .1000 hrs End= 24.0000 hrs SIN: 121E01C0709D Bartlett Engineering and Surveying, PC PondPack Ver. 9.0041 Time: 12:51 PM Date: 9/2/2009 Type.... Tc Calcs Page 3.01 Name.... SUBAREA 10 File.... P:\-PROJECT FILES\halilfax road\POND\OMS401 PRE.PPW ....... ............................................................. TIME OF CONCENTRATION CALCULATOR Segment #1: Tc: SCS Lag Hydraulic Length 741.00 ft Runoff CN 72 Slope .027000 ft/ft Avg.Velocity .64 ft/sec Segment #1 Time: .3203 hrs ------------------------------------------------------------------------ ------------------------- ------------------------- Total Tc: .3203 hrs ------------------------- ------------------------- S/N: 121EOIC0709D Bartlett Engineering and Surveying, PC PondPack Ver. 9.0041 Time: 12:51 PM Date: 9/2/2009 Type.... Tc Calcs Page 3.02 Name.... SUBAREA 10 File.... P:\-PROJECT FILES\halilfax road\POND\OMS401 PRE.PPW ------------------------------------------------------------------------ Tc Equations used... ------------------------------------------------------------------------ ==== SCS Lag Tc = 0.000877 * (Lf**0.8) * ((1000/CN) - 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: 121EOlCO709D Bartlett Engineering and Surveying, PC PondPack Ver. 9.0041 Time: 12:51 PM Date: 9/2/2009 Type.... Runoff CN-Area Page 4.01 Name.... SUBAREA 10 File.... P:\ PROJECT FILES\halilfax road\POND\OMS401 PRE.PPW RUNOFF CURVE NUMBER DATA .......................................................................... .......................................................................... Impervious Area Adjustment Adjusted Soil/Surface Description CN acres %C RUC CN -------------------------------- ---- --------- ----- ----- ------ Small grain - SR + Crop residue, go 72 5.910 72.00 COMPOSITE AREA & WEIGHTED CN ---> 5.910 72.00 (72) ........................................................................... ........................................................................... SIN: 121E01C0709D Bartlett Engineering and Surveying, PC PondPack Ver. 9.0041 Time: 12:51 PM Date: 9/2/2009 Appendix A Index of Starting Page Numbers for ID Names ----- R ----- ROCKY MT... 2.01 ----- S ----- SUBAREA 10... 3.01, 4.01 ----- W ----- Watershed... 1.01 A-1 SIN: 121EOlC0709D Bartlett Engineering and Surveying, PC PondPack Ver. 9.0041 Time: 12:51 PM Date: 9/2/2009 Job File: P:\_PROJECT FILES\halilfax road\POND\OMS401.PPW Rain Dir: P:\-PROJECT FILES\halilfax road\POND\ -------------------------- -------------------------- JOB TITLE -------------------------- -------------------------- Project Date: 8/24/2009 Project Engineer: Robert S. Bartlett Project Title: Watershed Project Comments: SIN: 121EOlCO709D Bartlett Engineering and Surveying, PC PondPack Ver. 9.0041 Time: 12:58 PM Date: 9/2/2009 Table of Contents i Table of Contents ++++*+++++++++++++++++ MASTER SUMMARY ++++++++++++++++++++++ Watershed....... Master Network Summary ............. 1.01 ****************** DESIGN STORMS SUMMARY ******************* ROCKY MT........ Design Storms ...................... 2.01 ++++++++++++++++*+++++ TC CALCULATIONS ++++++++*++*+++++++++ SUBAREA 10...... Tc Calcs ........................... 3.01 +*++*+++++++++++++++++ CN CALCULATIONS ++++*++++++++++++++++ SUBAREA 10...... Runoff CN-Area ..................... 4.01 ++++++++++++++++++++++* POND VOLUMES ++++++++++++++++*++++++ POND 10......... Vol: Elev-Area ..................... 5.01 ******************** OUTLET STRUCTURES ********************* Outlet 1........ Outlet Input Data .................. 6.01 SIN: 121EOlC0709D Bartlett Engineering and Surveying, PC PondPack Ver. 9.0041 Time: 12:58 PM Date: 9/2/2009 Type.... Master Network Summary Name.... Watershed File.... P:\-PROJECT FILES\halilfax road\POND\OMS401.PPW MASTER DESIGN STORM SUMMARY Network Storm Collection: ROCKY MT Total Depth Return Event in Dev 1 3.2000 Dev 2 3.6000 Dev 10 5.2800 Dev 25 6.4800 Dev100 8.0000 Rainfall Type ---------------- Synthetic Curve Synthetic Curve Synthetic Curve Synthetic Curve Synthetic Curve RNF ID Page 1.01 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 ---------- .591 *OUT 10 JCT 2 .735 *OUT 10 JCT 10 1.402 *OUT 10 JCT 25 1.916 *OUT 10 JCT 100 2.593 POND 10 IN POND 1 .598 POND 10 IN POND 2 .743 POND 10 IN POND 10 1.410 POND 10 IN POND 25 1.925 POND 10 IN POND 100 2.602 POND 10 OUT POND 1 .591 POND 10 OUT POND 2 .735 POND 10 OUT POND 10 1.402 POND 10 OUT POND 25 1.916 POND 10 OUT POND 100 2.593 Max Qpeak Qpeak Max WSEL Pond Storage hrs --------- cfs -------- ft - ac-ft 12.5500 1.59 - ------ ------------ 12.3000 4.69 12.0500 19.57 12.1000 26.05 12.0500 34.98 12.0500 8.06 12.0500 10.14 12.0500 19.55 12.0500 26.63 12.0500 35.77 12.5500 1.59 120.42 .266 12.3000 4.69 120.51 .295 12.0500 19.57 120.59 .322 12.1000 26.05 120.63 .333 12.0500 34.98 120.68 .349 SIN: 121EOlCO709D Bartlett Engineering and Surveying, PC PondPack Ver. 9.0041 Time: 12:58 PM Date: 9/2/2009 Type.... Master Network Summary Name.... Watershed File.... P:\-PROJECT FILES\halilfax road\POND\OMS401.PPW MASTER NETWORK SUMMARY SCS Unit Hydrograph Method Page 1.02 (*Node=Outfall; +Node=Diversion;) (Trun= HYG Truncation: Blank=None; L=Left; R=Rt; LR=Left&Rt) Return HYG Vol Qpeak Qpeak Node ID -------- ------- Type -- -- Event ac-ft Trun hrs cfs SUBAREA 10 -- AREA ------ 1 ---------- .598 -- --------- 12.0500 -------- 8.06 SUBAREA 10 AREA 2 .743 12.0500 10.14 SUBAREA 10 AREA 10 1.410 12.0500 19.55 SUBAREA 10 AREA 25 1.925 12.0500 26.63 SUBAREA 10 AREA 100 2.602 12.0500 35.77 Max Max WSEL Pond Storage ft ac-ft -------- ------------ S/N: 121EOlC0709D Bartlett Engineering and Surveying, PC PondPack Ver. 9.0041 Time: 12:58 PM Date: 9/2/2009 Type.... Design Storms Page 2.01 Name.... ROCKY MT File.... P:\ PROJECT FILES\halilfax road\POND\ Title... Project Date: 8/24/2009 Project Engineer: Robert S. Bartlett Project Title: Watershed Project Comments: DESIGN STORMS SUMMARY Design Storm File,ID = ROCKY MT Storm Tag Name = Dev 1 Data Type, File, ID = Synthetic Storm TypeII 24hr Storm Frequency = 1 yr Total Rainfall Depth= 3.2000 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 TypelI 24hr Storm Frequency = 2 yr Total Rainfall Depth= 3.6000 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 TypeII 24hr Storm Frequency = 10 yr Total Rainfall Depth= 5.2800 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 TypeII 24hr Storm Frequency = 25 yr Total Rainfall Depth= 6.4800 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= 8.0000 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: 12:58 PM Date: 9/2/2009 Type.... Tc Calcs Page 3.01 Name.... SUBAREA 10 File.... P:\-PROJECT FILES\halilfax road\POND\OMS401.PPW TIME OF CONCENTRATION CALCULATOR Segment #1: Tc: SCS Lag Hydraulic Length 741.00 ft Runoff CN 77 Slope .027000 ft/ft Avg.Velocity .74 ft/sec Segment #1 Time: .2777 hrs ------------------------------------------------------------------------ ------------------------- ------------------------- Total Tc: .2777 hrs ------------------------- ------------------------- S/N: 121EOlC0709D Bartlett Engineering and Surveying, PC PondPack Ver. 9.0041 Time: 12:56 PM Date: 9/2/2009 Type.... Tc Calcs Page 3.02 Name.... SUBAREA 10 File.... P:\-PROJECT FILES\halilfax road\POND\OMS401.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: 12:58 PM Date: 9/2/2009 Type.... Runoff CN-Area Page 4.01 Name.... SUBAREA 10 File.... P:\ PROJECT FILES\halilfax road\POND\OMS401.PPW RUNOFF CURVE NUMBER DATA Impervious Area Adjustment Adjusted Soil/Surface Description CN acres %C RUC CN -------------------------------- ---- --------- ----- ----- ------ Impervious Areas - Paved parking to 98 2.570 98.00 Open space (Lawns,parks etc.) - Goo 61 3.350 61.00 COMPOSITE AREA & WEIGHTED CN ---> 5.920 77.06 (77) SIN: 121EOlC0709D Bartlett Engineering and Surveying, PC PondPack Ver. 9.0041 Time: 12:58 PM Date: 9/2/2009 it Type.... Vol: Elev-Area Page 5.01 Name.... POND 10 File.... P:\ PROJECT FILES\halilfax road\POND\OMS40a.PPW Elevation Planimeter Area Al+A2+sgr(Al*A2) Volume Volume Sum (ft) ------------ (sq.in) (acres) --------------------- (acres) ----------------- (ac-ft) -- - (ac-ft) 119.50 ----- .2392 .0000 - ----- .000 ------------- .000 120.00 ----- .3027 .8110 .135 .135 120.30 ----- .3146 .9259 .093 .228 120.50 ----- .3226 .9558 .064 .291 121.00 ----- .3430 .9982 .166 .458 121.50 ----- .3637 1.0599 .177 .634 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: 121EOlC0709D Bartlett Engineering and Surveying, PC PondPack Ver. 9.0041 Time: 12:58 PM Date: 9/2/2009 Type.... Outlet Input Data Page 6.01 Name.... Outlet 1 File.... P:\ PROJECT FILES\halilfax road\POND\OMS401.PPW REQUESTED POND WS ELEVATIONS: Min. Elev.= 119.50 ft Increment = .20 ft Max. Elev.= 121.50 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 120.500 121.500 Inlet Box IB ---> CV 120.300 121.500 Orifice-Circular 01 ---> CV 119.500 121.500 Culvert-Circular CV ---> TW 118.800 121.500 TW SETUP, DS Channel SIN: 121EOlC0709D Bartlett Engineering and Surveying, PC PondPack Ver. 9.0041 Time: 12:58 PM Date: 9/2/2009 Type.... Outlet Input Data Name.... Outlet 1 File.... P:\ PROJECT FILES\halilfax road\POND\OMS401.PPW OUTLET STRUCTURE INPUT DATA Structure ID Structure Type -------------- # of Openings Crest Elev. Weir Length Weir Coeff. WR Weir-Rectangular ---------------- 1 120.50 ft 140.00 ft 2.800000 Weir TW effects (Use adjustment equation) Page 6.02 Structure ID = IB Structure Type ----------------- = Inlet Box ------------- ------ # of Openings = 1 Invert Elev. = 120.30 ft Orifice Area = 3.9000 sq.ft Orifice Coeff. _ .600 Weir Length = 10.00 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. = 119.50 ft Diameter = .1458 ft Orifice Coeff. _ .600 SIN: 121EOlC0709D Bartlett Engineering and Surveying, PC PondPack Ver. 9.0041 Time: 12:58 PM Date: 9/2/2009 Type.... Outlet Input Data Name.... Outlet 1 File.... P:\ PROJECT FILES\halilfax road\POND\OMS401.PPW OUTLET STRUCTURE INPUT DATA Structure ID = CV Structure Type ------------------ = Culvert-Circular ------------------ No. Barrels = 1 Barrel Diameter = 1.0000 ft Upstream Invert = 118.80 ft Dnstream Invert = 118.74 ft Horiz. Length = 25.00 ft Barrel Length = 25.00 ft Barrel Slope = .00260 ft/ft OUTLET CONTROL DATA... Mannings n = .0150 Ke = .5000 Kb = .041636 Kr = .5000 HW Convergence = .001 INLET CONTROL DATA... Equation form = 2 Inlet Control K = .5190 Inlet Control M = .6400 Inlet Control c = .02100 Inlet Control Y = .9000 T1 ratio (HW/D) = 1.157 T2 ratio (HW/D) = 1.235 Slope Factor = -.500 Page 6.03 (forward entrance loss) (per ft of full flow) (reverse entrance loss) +/- ft Use unsubmerged inlet control Form 2 equ. below Ti elev. Use submerged inlet control Form 2 equ. above T2 elev. In transition zone between unsubmerged and submerged inlet control, interpolate between flows at T1 & T2... At T1 Elev = 119.96 ft ---> Flow = 2.75 cfs At T2 Elev = 120.03 ft ---> Flow = 3.14 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; 121EOlC0709D Bartlett Engineering and Surveying, PC PondPack Ver. 9.0041 Time: 12:58 PM Date: 9/2/2009 Appendix A Index of Starting Page Numbers for ID Names ----- O ----- Outlet 1... 6.01 ----- P ----- POND 10... 5.01 ----- R ----- ROCKY MT... 2.01 ----- S ----- SUBAREA 10... 3.01, 4.01 ----- W ----- Watershed... 1.01 A-1 SIN: 121EOlC0709D Bartlett Engineering and Surveying, PC PondPack Ver. 9.0041 Time: 12:58 PM Date: 9/2/2009 Type.... Individual Outlet Curves Name.... Outlet 1 File.... P:\ PROJECT FILES\halilfax road\POND\OMS401.PPW RATING TABLE FOR ONE OUTLET TYPE WS Elev,Device Q WS Elev. Q ft cfs -------- 119.50 ------- .00 119.60 .00 119.70 .00 119.80 .00 119.90 .00 120.00 .00 120.10 .00 120.20 .00 120.30 .00 120.40 .00 120.50 .00 120.60 12.40 120.70 35.06 120.80 64.41 120.90 99.17 121.00 138.59 121.10 182.18 121.20 229.58 121.30 280.49 121.40 334.70 121.50 392.00 Structure ID = WR (Weir-Rectangular) -------------------------------------- Upstream ID = (Pond Water Surface) DNstream ID = TW (Pond Outfall) Tail Water Notes --------------- TW Elev Converge ft +/-ft -------- ----- Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Free Outfall Computation Messages Page 13.04 WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. WS below an invert; no flow. H=.10; Htw=.00; Qfree=12.40; H=.20; Htw=.00; Qfree=35.06; H=.30; Htw=.00; Qfree=64.41; H=.40; Htw=.00; Qfree=99.17; H=.50; Htw=.00; Qfree=138.59; H=.60; Htw=.00; Qfree=182.18; H=.70; Htw=.00; Qfree=229.58; H=.80; Htw=.00; Qfree=280.49; H=.90; Htw=.00; Qfree=334.70; H=1.00; Htw=.00; Qfree=392.00; SIN: 121EOlC0709D Bartlett Engineering and Surveying, PC PondPack Ver. 9.0041 Time: 1:00 PM Date: 9/2/2009 Type.... Individual Outlet Curves Page 13.05 Name.... Outlet 1 File.... P:\ PROJECT FILES\halilfax road\POND\OMS401.PPW RATING TABLE FOR ONE OUTLET TYPE Structure ID = IB (Inlet Box) ------------- Upstream ID -------- = (P ---------- ond Water ------- Surface) DNStream ID = CV ( Culvert-Ci rcular) Pond WS. Device (into) Converge Next DS HGL Q SUM DS Chan. TW Elev. Q HW HGL D S HGL DS HGL Error Error TW Error ft cfs ft ft ft + /-ft +/-cfs -- ft ----- +/-ft -- ------- -------- 119.50 -------- .00 ------- -- ... ------ ... ------- - ... ----- ---- ... ... Free Outfall WS below an invert; no flow. 119.60 .00 ... ... ... ... ... Free Outfall WS below an invert; no flow. 119.70 .00 ... ... ... ... ... Free Outfall WS below an invert; no flow. 119.80 .00 ... ... ... ... ... Free Outfall WS below an invert; no flow. 119.90 .00 ... ... ... ... ... Free Outfall WS below an invert; no flow. 120.00 .00 ... ... ... ... ... Free Outfall WS below an invert; no flow. 120.10 .00 ... ... ... ... ... Free Outfall WS below an invert; no flow. 120.20 .00 ... ... ... ... ... Free Outfall WS below an invert; no flow. 120.30 .00 ... ... ... ... ... Free Outfall WS below an invert; no flow. 120.40 .89 120.40 Free 119.45 .000 .000 Free Outfall We ir: H =.10 120.50 2.50 120.50 Free 119.99 .000 .000 Free Outfall We ir: H =.20 120.60 3.83 120.60 120.60 120.60 .000 .000 Free Outfall DS HGL+Loss > crest: Flow set to Downstream outlet. 120.70 4.02 120.70 120.70 120.70 .000 .000 Free Outfall DS HGL+Loss > crest: Flow set to Downstream outlet. 120.80 4.20 120.80 120.80 120.80 .000 .000 Free Outfall DS HGL+Loss > crest: Flow set to Downstream outlet. 120.90 4.36 120.90 120.90 120.90 .000 .000 Free Outfall DS HGL+Loss > crest: Flow set to Downstream outlet. 121.00 4.52 121.00 121.00 121.00 .000 .000 Free Outfall DS HGL+Loss > crest: Flow set to Downstream outlet. 121.10 4.69 121.10 121.10 121.10 .000 .000 Free Outfall DS HGL+Loss > crest: Flow set to Downstream outlet. 121.20 4.83 121.20 121.20 121.20 .000 .000 Free Outfall DS HGL+Loss > crest: Flow set to Downstream outlet. SIN: 121EOlC0709D Bartlett Engineering and Surveying, PC PondPack Ver. 9.0041 Time: 1:00 PM Date: 9/2/2009 Type.... Individual Outlet Curves Page 13.06 Name.... Outlet 1 File.... P:\ PROJECT FILES\halilfax road\POND\OMS401.PPW RATING TABLE FOR ONE OUTLET TYPE Structure ID = IB (Inlet Box) ------------ Upstream ID -------- = ( ---------- Pond Water -------- Surface) DNstream ID = CV (Culvert-C ircular) Pond WS. Device (into) Converge Next DS HGL Q SUM DS Chan. TW Elev. Q HW HGL DS HGL DS HGL Error Error TW Error ft - --- cfs -- ft ft ft +/-ft +/-cfs ft +/-ft - --- 121.30 -- --- 4.99 - ------- - 121.30 ------- 121.30 ------- 121.30 ------ ------ .000 .000 ------- ------- Free Outfall DS HGL+Loss > crest : Flow set to Downstream outlet. 121.40 5.14 121.40 121.40 121.40 .000 .000 Free Outfall DS HGL+Loss > crest : Flow set to Downstream outlet. 121.50 5.29 121.50 121.50 121.50 .000 .000 Free Outfall DS HGL+Loss > crest : Flow set to Downstream outlet. SIN: 121E01C0709D Bartlett Engineering and Surveying, PC PondPack Ver. 9.0041 Time: 1:00 PM Date: 9/2/2009 Type.... Individual Outlet Curves Page 13.07 Name.... Outlet 1 File.... P:\ PROJECT FILES\halilfax road\POND\OMS401.PPW RATING TABLE FOR ONE OUTLET TYPE Structure ID = 01 (Orifice-Ci rcular ) ------------ Upstream ID -------- = ( ----------- Pond Water ------ Surfac - e) DNstream ID = CV (Culvert-Ci rcular ) Pond WS. Device (into) C onverge Next D S HGL Q SUM DS Chan. TW Elev. Q HW HGL DS HGL DS HGL E rror Error TW Error ft cfs ft ft ft + /-ft +/-cfs --- ft +/-ft ------- ------- -------- 119.50 -------- .00 ------- - ... ------- ... ------- - ... ----- ... --- ... Free Outfall WS below an invert; no flow. 119.60 .01 119.60 Free 118.87 .000 .000 Free Outfall CRIT.DEPTH CONTROL Vh= .026ft Dcr= .073ft CRIT.DEPTH 119.70 .03 119.70 Free 118.91 .000 .000 Free Outfall H =.13 119.80 .04 119.80 Free 118.92 .000 .000 Free Outfall H =.23 119.90 .05 119.90 Free 118.94 .000 .000 Free Outfall H =.33 120.00 .OS 120.00 Free 118.95 .000 .000 Free Outfall H =.43 120.10 .06 120.10 Free 118.95 .000 .000 Free Outfall H =.53 120.20 .06 120.20 Free 118.96 .000 .000 Free Outfall H =.63 120.30 .07 120.30 Free 118.97 .000 .000 Free Outfall H =.73 120.40 .07 120.40 Free 119.45 .000 .000 Free Outfall H =.83 120.50 .06 120.50 120.00 119.99 .007 .000 Free Outfall H =.50 120.60 .00 120.60 120.60 120.60 .000 .000 Free outfall Full riser flow. Q=0 this opening. 120.70 .00 120.70 120.70 120.70 .000 .000 Free Outfall Full riser flow. Q=0 this opening. 120.80 .00 120.80 120.80 120.80 .000 .000 Free Outfall Full riser flow. Q=0 this opening. 120.90 .00 120.90 120.90 120.90 .000 .000 Free Outfall Full riser flow. Q=0 this opening. 121.00 .00 121.00 121.00 121.00 .000 .000 Free Outfall Full riser flow. Q=0 this opening. 121.10 .00 121.10 121.10 121.10 .000 .000 Free Outfall Full riser flow. Q=0 this opening. 121.20 .00 121.20 121.20 121.20 .000 .000 Free Outfall Full riser flow. Q=0 this opening. 121.30 .00 121.30 121.30 121.30 .000 .000 Free Outfall Full riser flow. Q=0 this opening. 121.40 .00 121.40 121.40 121.40 .000 .000 Free Outfall Full riser flow. Q=0 this opening. 121.50 .00 121.50 121.50 121.50 .000 .000 Free Outfall Full riser flow. Q=0 this opening. SIN: 121EOlC0709D Bartlett Engineering and Surveying, PC PondPack Ver. 9.0041 Time: 1:00 PM Date: 9/2/2009 Type.... Individual Outlet Curves Page 13.08 Name.... Outlet 1 File.... P:\ PROJECT FILES\halilfax road\POND\OMS401.PPW RATING TABLE FOR ONE OUTLET TYPE Structure ID = CV (Culvert-Circular) -------------------------------------- Mannings open channel maximum capacity: 1.69 cfs UPstream ID's= IB, 01 DNStream ID = TW (Pond Outfall) Pond WS. Device (into) Converge Next DS HGL Q SUM DS Chan. TW Elev. Q HW HGL DS HGL DS HGL Error Error TW Error ft -------- cfs -------- ft --- ft - ft +/ -ft + /-cfs ft +/-ft 119.50 .00 ---- 118.80 ------- Free ------- -- Free ---- - .000 ----- .000 ------ Free - ------- Outfall 119.60 .01 118.87 Free Free .000 .000 Free Outfall BACKWATER CONTROL.. Vh= .005ft hwDi= .060ft Lbw= 25.Oft 119.70 .03 118.91 Free Free .000 .000 Free Outfall BACKWATER CONTROL.. Vh= .009ft hwDi= .094ft Lbw= 25.Oft 119.80 .04 118.92 Free Free .000 .000 Free Outfall BACKWATER CONTROL.. Vh= .Ollft hwDi= .108ft Lbw= 25.Oft 119.90 .05 118.94 Free Free .000 .000 Free Outfall BACKWATER CONTROL.. Vh= .012ft hwDi= .118ft Lbw= 25.Oft 120.00 .05 118.95 Free Free .000 .000 Free Outfall BACKWATER CONTROL.. Vh= .013ft hwDi= .125ft Lbw= 25.Oft 120.10 .06 118.95 Free Free .000 .000 Free Outfall BACKWATER CONTROL.. Vh= .014ft hwDi= .132ft Lbw= 25.Oft 120.20 .06 118.96 Free Free .000 .000 Free Outfall BACKWATER CONTROL.. Vh= .015ft hwDi= .137ft Lbw= 25.Oft 120.30 .07 118.97 Free Free .000 .000 Free Outfall BACKWATER CONTROL.. Vh= .016ft hwDi= .142ft Lbw= 25.Oft 120.40 .96 119.45 Free Free .000 .000 Free Outfall BACKWATER CONTROL.. Vh= .083ft hwDi= .522ft Lbw= 25.Oft 120.50 2.56 119.99 Free Free .000 .000 Free Outfall BACKWATER CONTROL.. Vh= .178ft hwDi= .923ft Lbw= 25.Oft 120.60 3.83 120.60 Free Free .000 .000 Free Outfall FULL FLOW . ..Lfull=19 .12ft Vh=. 370ft HL=.85 0ft 120.70 4.02 120.70 Free Free .000 .000 Free Outfall FULL FLOW . ..Lfull=20 .13ft Vh=. 407ft HL=.95 2ft 120.80 4.20 120.80 Free Free .000 .000 Free Outfall FULL FLOW . ..Lfull=21 .14ft Vh=. 443ft HL=1.0 55ft 120.90 4.36 120.90 Free Free .000 .000 Free Outfall FULL FLOW . ..Lfull=21 .93ft Vh=. 480ft HL=1.1 58ft 121.00 4.52 121.00 Free Free .000 .000 Free Outfall FULL FLOW . ..Lfull=22 .60ft Vh=. 516ft HL=1.2 59ft 121.10 4.69 121.10 Free Free .000 .000 Free Outfall FULL FLOW . ..Lfull=22 .96ft Vh=. 554ft HL=1.3 60ft 121.20 4.83 121.20 Free Free .000 .000 Free Outfall FULL FLOW . ..Lfull=23 .72ft Vh=. 588ft HL=1.4 63ft SIN: 121EOIC0709D Bartlett Engineering and Surveying, PC PondPack Ver. 9.0041 Time: 1:00 PM Date: 9/2/2009 Type.... Individual Outlet Curves Page 13.09 Name.... Outlet 1 File.... P:\ PROJECT FILES\halilfax road\POND\OMS401.PPW RATING TABLE FOR ONE OUTLET TYPE Structure ID = CV (Culvert-Circular) -------------------------------------- Mannings open channel maximum capacity: 1.69 cfs UPstream ID's= IB, 01 DNstream ID = TW (Pond Outfall) Pond WS Elev. ft 121.30 121.40 121.50 Device (into) Converge Next Q HW HGL DS HGL DS HGL cfs ft ft ft -------- ------- -------- ------- 4.99 121.30 Free Free FULL FLOW ...Lfull=23.84ft 5.14 121.40 Free Free FULL FLOW ...Lfull=23.93ft 5.29 121.50 Free Free FULL FLOW ...Lfull=24.Olft DS HGL Q SUM DS Chan. TW Error Error TW Error +/-ft +/-cfs ft +/-ft ------ ------ ------- ------- .000 .000 Free Outfall Vh=.627ft HL=1.562ft .000 .000 Free Outfall Vh=.665ft HL=1.661ft .000 .000 Free Outfall Vh=.705ft HL=1.762ft SIN: 121EOIC0709D Bartlett Engineering and Surveying, PC PondPack Ver. 9.0041 Time: 1:00 PM Date: 9/2/2009 BARTLETT 1906 Nash Street North Wilson, NC 27893-1726 Phone: (252) 399-0704 Fax: (252) 399-0804 ion@bartletteng.com September 9, 2009 NCDENR 401 Oversight/Express Review Permitting Unit 1650 Mail Service Center Raleigh, NC 27604 REFERENCE: OLDE MILL STREAM SOILS EVALUATION-ROCKY MOUNT, NC INTRODUCTION: A preliminary evaluation of soils and site characteristics was performed by Jon L. Meade, PhD on September 2, 2009 to evaluate potential suitability for onsite stormwater control using wet-detention ponds. The soil series mapped for the location is NrB and include Norfolk, Georgeville, and Faceville soils. Bore samples tend to match the closest to the Georgeville and Faceville soils which are generally shown as well drained with moderate permeability and red clay to red silty clay exceeding 30-40 inches. METHODS: Two soil sample bore holes (#1 and #2) were performed and locations are shown in Figure 1 with detailed information in Table 1. Soils are generally sandy clay loam 0"-6" and red clay to a depth of 40"-48" before turning to a more streaky red /brown sandy clay. Some iron depletions were evident at approximately 36"40" and the high water table was estimated to be between 36"40". CONCLUSIONS AND RECOMMENDATIONS: Based on site contours, the existing ground elevations for the detention pond range between 120.0' to 122.0'. The high clay content of the soil layers and estimated seasonal high water table of approximately 36"- 40" deep (Elevation approximately 118.0') should be sufficient to support a stormwater detention pond with a proposed permanent pool elevation of 119.5'. If you have any questions or need additional information, please contact our office. Thank you. Sincerely, Bartlett Engineering & Surveying ?% N CARpj/// \ ``\ ............ u .„ Robert S. Bartlett, PE SEAL 20106 ,H Enclosure = ,n •_ - .. TABLE 1: SOIL PROFILE DESCRIPTIONS LOCATION: BORE HOLE#1 DEPTH " COLOR TEXTURE DESCRIPTION 0-6 10YR 6/6 SANDY LOAM 6-12 2.5Y 5/4 SANDY LOAM 12-20 5YR 5/8 CLAY 20-26 5YR 5/8 CLAY HEAVY CLAY 10YR 5/4 APPROX. 10% 26-30 5YR 5/8 CLAY HEAVY CLAY 10YR 5/4 2.5Y 6/4 30-36 5YR 5/8 CLAY 2.5Y 4/4 5Y 7/2 IRON DEPLETIONS -30% 36-48 2.5Y 8/2 SANDY CLAY 5YR 5/8 NOTES: HIGH WATER TABLE ESTIMATED TO BE 36" LOCATION: BORE HOLE#2 DEPTH" COLOR TEXTURE DESCRIPTION 0-6 2.5Y 6/4 SANDY CLAY LOAM 6-16 5YR 5/6 CLAY 2.5Y 6/4 MINOR 16-24 5YR 5/4 CLAY 50% 2.5Y 6/3 50% 24-36 5Y 7/2 CLAY 25% 5YR 5/4 75% 36+ 5Y 7/2 CLAY MAJORITY 5YR 5/4 7.5YR 5/6 STREAKY NOTES: HIGH WATER TABLE ESTIMATED TO BE 30"-36" N z O ?H QQ W U wO N W J J _JO W LLJ -JO Om ^\ J :l I W ? I I a J 'a r zl ?" ? W N ? o '1 ? 0 E- U w u x z ? o 10 °n Official Series Description - GEORGEVILLE Series LOCATION GEORGEVILLE SC+AL GA NC VA Established Series Rev.DJD;DTA 11/2007 GEORGEVILLE SERIES Pagel of 4 The Georgeville series consists of very deep, well drained, moderately permeable soils that formed in material mostly weathered from fine-grained metavolcanic rocks of the Carolina Slate Belt. Slopes are 2 to 50 percent. TAXONOMIC CLASS: Fine, kaolinitic, thermic Typic Kanhapludults TYPICAL PEDON: Georgeville silt loam - forested. (Colors are for moist soil.) Oe--1 to 0 inches; decayed leaves and live roots. A--O to 4 inches; dark yellowish brown (I OYR 4/4) silt loam; weak medium subangular blocky structure; friable; many fine and common medium roots; strongly acid; abrupt smooth boundary. (2 to 9 inches thick) E-4 to 6 inches; yellowish brown (1 OYR 5/4) silt loam; weak medium subangular blocky structure; friable; many fine and medium roots; strongly acid; abrupt broken boundary. (0 to 5 inches thick) Btl--6 to 10 inches; yellowish red (5YR 5/6) silt clay loam; weak fine subangular blocky structure; friable; common fine and few medium roots; few distinct clay films on faces of peds; common fine pores; strongly acid; clear smooth boundary. Bt2--10 to 28 inches; red (2.5YR 4/8) clay; moderate fine subangular blocky structure; friable; few fine and medium roots; common distinct clay films on faces of peds; common fine pores; strongly acid; clear smooth boundary. Bt3--28 to 41 inches; red (2.5YR 4/6) clay with few fine prominent strong brown (7.5YR 5/8) mottles; moderate fine and medium subangular blocky structure; friable; common distinct clay films on faces of peds; few fine pores; strongly acid; gradual smooth boundary. Bt4--41 to 53 inches; red (2.5YR 4/6) silty clay loam with few fine prominent yellowish brown (IOYR 5/6) and brownish yellow (1 OYR 6/8) mottles; moderate coarse subangular blocky structure; friable; few fine roots; common distinct clay films on faces of peds; few fine pores; few fine flakes of mica; strongly acid; gradual smooth boundary. (Combined thickness of the Bt horizon ranges from 24 to 48 inches or more) BC--53 to 63 inches; red (2.5YR 4/6) silty clay loam with common fine and medium prominent reddish yellow (7.5YR 6/8) and few fine distinct dark yellowish brown (IOYR 4/6) mottles; weak coarse and very coarse subangular blocky structure; friable; few fine roots; few faint clay films on faces of peds; few fine flakes of mica; strongly acid. (5 to 25 inches thick) http://www2.ftw.nres.usda.gov/osd/dat/G/GEORGEVILLE.html 9/9/2009 Official Series Description - GEORGEVILLE Series Page 2 of 4 TYPE LOCATION: Lancaster County, South Carolina; 6 miles northeast of Lancaster, South Carolina; 1.3 miles east of junction of State Highway 28 and 82; 60 feet south of State Highway 28; and 235 feet southeast of power pole no. COA31. RANGE IN CHARACTERISTICS: Thickness of the clayey part of the Bt horizon ranges from 24 to 48 inches. Depth to the bottom of the clayey Bt horizon exceeds 30 inches. Depth to a lithic contact is more than 60 inches. The soil is very strongly acid to neutral in the A horizon and very strongly acid or strongly acid throughout the rest of the profile. Content of rock fragments ranges 0 to 20 percent in the A and E horizons, and 0 to 10 percent in the Bt, BC and C horizons. Few fine flakes of mica are in the lower part of the solum of some pedons, and some pedons may have few fine manganese concretions in the surface and upper subsoil horizons. The A horizon has hue of 5YR to 2.5Y, value of 4 or 5 and chroma of 0 to 8. It is silt loam, loam, or very fine sandy loam in the fine-earth fraction. Where eroded, the A horizon has hue of 2.5YR to 7.5YR, value of 4 or 5, and chroma of 4 to 8. It is clay loam or silty clay loam. The E horizon, where present, has hue of 5YR to 2.5Y, value of 4 or 5, and chroma of 3 to 8. It is silt loam, loam, or very fine sandy loam in the fine-earth fraction. The upper part of the Bt horizon has hue of 5YR, value of 4 or 5 and chroma of 6 to 8. The middle part of the Bt horizon has hue of I OR or 2.5YR, value of 4 or 5 and chroma of 6 to 8. The lower part of the Bt horizon has hue of l OR or 2.5YR, value of 4 or 5 and chroma of 6 to 8, commonly with mottles in shades of red, yellow, or brown. The Bt horizon is clay loam, silty clay loam, silty clay or clay. The particle-size control section averages more than 30 percent silt or more than 40 percent silt plus very fine sand, or less than 15 percent sand coarser than very fine sand.. The BC horizon has hue of l OR to 5YR, value of 4 to 6, and chroma of 6 to 8, commonly with mottles in shades of yellow or brown. It is silt loam, loam, silty clay loam, or clay loam. The C horizon has hue of l OR to l OYR, value of 4 to 6, and chroma of 3 to 8, commonly with mottles in shades of brown, yellow, white, gray, or red. In some pedons, the C horizon is coarsely mottled in shades of red, brown, yellow or gray. The C horizon is silt loam, loam, very fine sandy loam, fine sandy loam, sandy loam, or silty clay loam saprolite of fine-grained metavolcanic rock. COMPETING SERIES: These are the Appling, Aragon, Cataula, Cecil, Chestatee, Darley, Herndon, Hulett, Kolomaki, Mahan, Nanford, Nectar, Neeses, Pacolet, Spotsylvania, Tarrus, and Wedowee series. Appling, Cecil, Hulett, Pacolet, and Wedowee soils have less than 30 percent silt in the control section. Aragon soils have Bt horizons that are mottled in the upper part. Aragon and Nectar soils formed in weathered limestone, sandstone, shale, or siltstone. Chestatee soils have more than 15 percent by volume of coarse fragments throughout. Darley soils contain layers of fractured ironstone in the B horizon. Herndon soils have Bt horizons with hue of 5YR or yellower. Nanford and Tarrus soils have a depth to weathered bedrock of 40 to 60 inches. Spotsylvania soils have a lithologic discontinuity. Mahan soils formed in coastal plain sediments and have coarse fragments of ironstone. GEOGRAPHIC SETTING: Georgeville soils are on gently sloping to moderately steep Piedmont uplands. Slopes are generally 6 to 15 percent but range from 2 to 50 percent. The soil formed in residuum weathered from fine-grained metavolcanic rocks. Mean annual precipitation ranges from 37 to 60 inches, mean annual temperature ranges from 59 to 66 degrees F, and the frost-free season ranges from 190 to 240 days. http://www2.ftw.nres.usda.gov/osd/dat/G/GEORGEVILLE.html 9/9/2009 Official Series Description - GEORGEVILLE Series Page 3 of 4 GEOGRAPHICALLY ASSOCIATED SOILS: In addition to the competing Herndon, Nanford, and Tarr-us series, these are the Alamance, Badin, Goldston, Gundy, Kirksey, Nason, Tatum, and Uwharrie series. Alamance and Kirksey soils are fine-silty. Goldston soils are loamy-skeletal. Badin, Gundy, Nason, Tatum, and Uwharrie soils have mixed mineralogy. DRAINAGE AND PERMEABILITY: Well drained; medium runoff, moderate permeability. USE AND VEGETATION: Cleared areas are used for cotton, small grains, tobacco, corn, hay, and pasture. Forested areas are in mixed hardwood and pines. DISTRIBUTION AND EXTENT: Piedmont of Alabama, Georgia, North Carolina, South Carolina, and Virginia. The series is extensive. MLRA OFFICE RESPONSIBLE: Raleigh, North Carolina SERIES ESTABLISHED: Cabarrus County, North Carolina, 1910. REMARKS: Diagnostic horizons and features recognized in this pedon are: Ochric epipedon - the zone from the surface of the soil to 6 inches (A and E horizons) Argillic horizon - the zone from 6 to 53 inches (130, Bt2, 130, and 13t4 horizons) MLRA = 136 SIR = S00014, SCO124 (ROCKY) ADDITIONAL DATA: TABULAR SERIES DATA: SOI-5 Soil Name Slope Airtemp FrFr/Seas Precip Elevation S00014 GEORGEVILLE 2-50 59-66 190- 225 37-60 300-1100 SCO124 GEORGEVILLE 2-50 59-66 190- 225 37-60 300-1100 SOI-5 FloodL F1oodH Watertable Kind Months B edrock Hardness S00014 NONE 6.0-6.0 - 60-60 SCO124 NONE 6.0-6.0 - 60-60 SOI-5 Depth Texture 3-Inch No-10 Clays -CEC- S00014 0- 6 L VFSL SIL 0- 2 80-100 5-27 8-16 500014 0- 6 SICL CL 0- 2 90-100 27-35 8-16 S00014 0- 6 FSL SL 0- 2 80-100 5-20 4-10 S00014 6-10 SICL CL 0- 1 90-100 27-35 6-10 S00014 10-53 C SIC SICL 0- 1 95-100 35-65 9-15 S00014 53-63 SICL L SIL 0- 5 90-100 15-40 7-15 SCO124 0-6 GR-L GR-SIL GR-VFSL 0- 10 55- 75 5-27 8-16 SCO124 0-6 SY-SIL SY-L SY-VFSL 0- 5 70- 80 5-27 8-16 SCO124 0-6 GR-FSL GR-SL 0- 10 55- 75 5-20 4-10 SCO124 6-0 SICL CL 0- 1 90-100 27-35 6-10 SCO124 10-53 C SIC SICL 0- 1 95-100 35-65 9-15 SCO124 53-63 SICL L SIL 0- 5 90-100 15-40 7-15 SOI-5 Depth -pH- O.M. Sal in Permeab S hnk-Swll S00014 0- 6 4.5- 7.3 .5-2. 0- 0 0.6- 2 .0 LOW http://www2.ftw.nres.usda.gov/osd/dat/G/GEORGEVILLE.html 9/9/2009 Official Series Description - GEORGEVILLE Series S00014 0- 6 4.5- 7.3 0.-.5 0- 0 0.6- 2.0 LOW S00014 0- 6 4.5- 6.0 .5-2. - 0.6- 2.0 LOW S00014 6-10 4.5- 5.5 0.-.5 0- 0 0.6- 2.0 LOW 500014 10-53 4.5- 5.5 0.-.5 0- 0 0.6- 2.0 LOW SCO014 53-63 4.5- 5.5 0.-.5 0- 0 0.6- 2.0 LOW SCO124 0- 6 4.5- 7.3 .5-2. 0- 0 0.6- 2.0 LOW SCO124 0- 6 4.5- 7.3 .5-2. 0- 0 0.6- 2.0 LOW SCO124 0- 6 4.5- 7.3 .5-2. - 0.6- 2.0 LOW SCO124 6-10 4.5- 5.5 0.-.5 0- 0 0.6- 2.0 LOW SCO124 10-53 4.5- 5.5 0.-.5 0- 0 0.6- 2.0 LOW SCO124 53-63 4.5- 5.5 0.-.5 0- 0 0.6- 2.0 LOW National Cooperative Soil Survey U.S.A. Page 4 of 4 http://www2.ftw.nres.usda.gov/osd/dat/G/GEORGEVILLE.htrnl 9/9/2009