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HomeMy WebLinkAbout20090312 Ver 1_401 Application_20090309ry` CLH design, p.a. Regency Park, 400 Regency Forest Drive, Suite 120 Cary, North Carolina 27918 Phone: (919) 319-6716 Fax.- (919) 319-7,516 Email- clhdesign@clhdesignpa.com LETTER OF TRANSMITTAL 0 9- 0 3 1 2 25-Mar-09 To: Annette Lucas,P.E. Company: NCDENR- DWQ Address: 2321 Crabtree Blvd, Suite 250 City, State Zip: Raleigh, NC 27604 Phone: 919-733-1786 Fax: 919-733-6893 Method: UPS Ground Subject: Wake County Continuum of Care CLH Project Number: 08-106-Prmt E E Prints Reports ? Originals ? Copy of Letter ? Specifications ® Applications ? Submittals E Other: Fee We are sending you the following items: No. of Copies Date Description • 1 3-19-09 Set of Plans • 1 3-25-09 Calculations, BMP Supplement and impact maps • 1 3-25-09 PCN Additional Remarks: Please find enclosed our application for buffer impact approval for the above referenced project. As discussed at our meeting on 2/19109 we are unable to obtain diffuse flow to the buffer and must build a BMP prior to discharging to Crabtree Creek. We will make ourselves available to answer any questions or provide addition information during your review. Please feel free to contact me if you have any questions at 919-459-6056 Thank you, Jason Kennedy Signed • 4@@@8W1LqD1r' "'R 2 ii 2009 DENR - WATER QUAL14 WETQA SAND STpRm;4TER B RANCH cc: File 08-106/Permit Permit Number (to be provided by DWQ) ?W 2pE W A rF9O NCDEHR c STORMWATER MANAGEMENT PERMIT APPLICATION FORM 401 CERTIFICATION APPLICATION FORM WETLAND 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 the required information. 1: RJECT RFORNATI Project name Wake County Continuum of Care Contact name Jason Kennedy Phone number 919.456.6056 Date March 25, 2009 Drainage area number N/a 'll:: ?.? ?NFOIITIC?N Site Characteristics Drainage area 380,714.40 ftz Impervious area 194,277.60 ftz Percent impervious 51.0% % Design rainfall depth 1.00 inch Peak Flow Calculations 1-yr, 24-hr rainfall depth 3.00 in 1-yr, 24-hr intensity 3.00 in/hr Pre-development 1-yr, 24-hr runoff ft3/sec Post-development 1-yr, 24-hr runoff ft3/sec Pre/Post 1-yr, 24-hr peak control ft3/sec Storage Volume: Non-SA Waters Minimum required volume 16,157.00 ft3 Volume provided (temporary pool volume) Design volume may be insufficient. Provide calculations 16,157.00 ft3 showing that it is greater than or equal to the Simple Method volume. Storage Volume: SA Waters Parameters 1.5" runoff volume ft3 Pre-development 1-yr, 24-hr runoff volume ft3 Post-development 1-yr, 24-hr runoff volume ft 3 Minimum volume required ft3 Volume provided ft3 Outlet Design Depth of temporary pool/ponding depth (Dp?antJ 12.00 in OK Drawdown time 3.20 days OK Diameter of orifice 2.00 in Drawdown orifice diameter may be insufficient. Please provide adequate supporting calculations. Coefficient of discharge (CD) used in orifice diameter 0.60 (unitless) calculation Driving head (Ho) used in the orifice diameter calculation 1.00 ft OK e..-... 011VAn4 ler..a__., n_... nuninn Permit Number (to be provided by DWQ) Surface Areas of Wetland Zones Surface Area of Entire Wetland Shallow Land The shallow land percentage is: Shallow Water The shallow water percentage is: Deep Pool Forebay portion of deep pool (pretreatment) The forebay surface area percentage is: Non-forebay portion of deep pool The non-forebay deep pool surface area percentage is: Total of wetland zone areas Add or subtract the following area from the zones Topographic Zone Elevations Temporary Pool Shallow Land (top) Permanent Pool Shallow Water (top) Deep Pool (top) Most shallow point of deep pool's bottom Deepest point of deep pool's bottom Design must meet one of the following two options: This design meets Option #1, Deep pool is 6inches below SLWT, If yes: SLWT (Seasonally Low Water Table) This design meets Option #2, Has a clay liner If yes: Depth of topsoil above clay liner Topographic Zone Depths Temporary Pool Shallow Land Permanent Pool Shallow Water Deep Pool (shallowest) Deep Pool (deepest) Planting Plan Are cattails included in the planting plan? Number of Plants recommended in Shallow Water Area: Herbaceous Wcubic-inch container) Number of Plants recommended in Shallow Land Area: Herbaceous (4'cubic-inch container), OR Shrubs (1 gallon or larger), OR Trees (3 gallon or larger) and Herbaceous (4+ cubic-inch) Number of Plants provided in Shallow Water Area: Herbaceous Wcubic-inch container) Number of Plants provided in Shallow Land Area: Herbaceous Wcubic-inch container) Shrubs (1 gallon or larger) Trees (3 gallon or larger) and Grass-like Herbaceous (4+ cubic-inch) 17,972.00 ftz OK 6,061.00 ftz OK 0.34% 7,230.00 ftz OK 0.40% 1,924.00 ftz OK 0.11 % 1,653.00 ftz OK 0.09% 16,868.00 ft2 Enter data into the shaded cells in this section. -1,104.00 ftz 208.00 fmsl 207.00 fmsl 206.50 fmsl 205.00 fmsl 203.00 fmsl (Y or N) fmsl Y 6.00 in 12.00 in OK 6.00 in OK 18.00 in OK 42.00 in Insufficient deep pool depth. N (Y or N) OK 1,850 1,550 248 31 and 1,240 232 Higher density is recommended. 217 More recommended if not planting shrubs or trees. 123 More recommended if not planting herb. and/or trees. 31 OK 0 More recommended if planting trees. Form SW401-Wetland-Rev.4-2/10/09 Parts I and U. Project Design Summary, Page 2 of 3 Permit Number (to be provided by DWQ) Additional Information Can the design volume be contained? Does volume in excess of the design volume flow evenly distributed through a vegetated filter? What is the length of the vegetated filter? Are calculations for supporting the design volume provided in the application? Is BMP sized to handle all runoff from ultimate build-out? Is the BMP located in a recorded drainage easement with a recorded access easement to a public Right of Way (ROW)? The length to width ratio is: Approximate wetland length Approximate wetland width Approximate surface area using length and width provided Will the wetland be stabilized within 14 days of construction? Y (Y or N) OK N (Y or N) Excess volume must pass through filter. 0.00 ft Y (Y or N) OK Y (Y or N) OK N (Y or N) Insufficient ROW location. 2.63 :1 OK 226.00 ft 86.00 ft 19,436.00 ft2 This approx. surface area is within this number of square feet of the entire wetland surface area reported above: Y (Y or N) OK Form SW401-Wetland-Rev.4-2/10/09 Parts I and II. Project Design Summary, Page 3 of 3 09-0312 0 Qc M ° Office Use Only: Corps action ID no. DWQ project no. Form Version 1.3 Dec 10 2008 Pre-Construction Notification PCN Form A. Applicant Information 1. Processing 1 a. Type(s) of approval sought from the Corps: F[01 Section 404 Permit El Section 10 Permit 1b. Specify Nationwide Permit (NWP) number: or General Permit (GP) number: 1c. Has the NWP or GP number been verified by the Corps? ? Yes ? No 1d. Type(s) of approval sought from the DWQ (check all that apply): ? 401 Water Quality Certification - Regular ? Non-404 Jurisdictional General Permit ? 401 Water Quality Certification - Express ® Riparian Buffer Authorization 1 e. Is this notification solely for the record because written approval is not required? For the record only for DWQ 401 Certification: ? Yes ® No For the record only for Corps Permit: ? Yes ® No 1 f. 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 1h. Is the project located within a NC DCM Area of Environmental Concern (AEC)? ? Yes ® No 2. Project Information 2a. Name of project: Wake County Continuum of Care 2b. County: Wake County 2c. Nearest municipality / town: City of Raleigh a 2d. Subdivision name: N/A L Lj 2e. NCDOT only, T.I.P. or state project no: N/A __UV T5 2009 3. Owner Information DENR - WATER WALITY WETLANDS AND STORffiWA 3a. Name(s) on Recorded Deed: County of Wake 3b. Deed Book and Page No. DB-2005 Pg. 1650 3c. Responsible Party (for LLC if applicable): Philip D. Stout 3d. Street address: 336 Fayetteville Street. 3e. City, state, zip: Raleigh, NC 27602 3f. Telephone no.: 919-856-6357 3g. Fax no.: 919-856-5305 3h. Email address: pstout@co.wake.nc.us Page I of 10 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: Jason Kennedy 5b. Business name (if applicable): CLH Design, P.A. 5c. Street address: 400 Regency Forest 5d. City, state, zip: Cary, NC 27511 5e. Telephone no.: 919-617-6716 5f. Fax no.: 919-319-7516 5g. Email address: jkennedy@clhdesignpa.com Page 2 of 10 PCN Form - Version 1.3 December 10, 2008 Version B. Project Information and Prior Project History 1. Property Identification 1a. Property identification no. (tax PIN or parcel ID): 1724401187 1 b. Site coordinates (in decimal degrees): Latitude: 35.4715 Longitude: - 78.3494 (DD.DDDDDD) (-DD.DDDDDD) 1 c. Property size: 18.924 acres 2. Surface Waters 2a. Name of nearest body of water (stream, river, etc.) to proposed project: Crabtree Creek 2b. Water Quality Classification of nearest receiving water: C:NSW 2c. River basin: Neuse 3. Project Description 3a. Describe the existing conditions on the site and the general land use in the vicinity of the project at the time of this application: Undeveloped, mostly wooded site with some severe slopes and an on-site stream subject to Neuse Buffer rules. General land use in vicinity varies from high density residental to mixed office 3b. List the total estimated acreage of all existing wetlands on the property: N.A. 3c. List the total estimated linear feet of all existing streams (intermittent and perennial) on the property: Crabtree Creek: 600 LF. Other: 500 LF. 3d. Explain the purpose of the proposed project: Mental Health medical treatment facility 3e. Describe the overall project in detail, including the type of equipment to be used: New commercial construction, associated parking, utilities, and roadway improvments to Sunnybrook and Merrell Drive 4. Jurisdictional Determinations 4a. Have jurisdictional wetland or stream determinations by the Corps or State been requested or obtained for this property / project (including all prior phases) in the past? Comments: ? Yes ®No ? Unknown 4b. If the Corps made the jurisdictional determination, what type of determination was made? ? Preliminary ? Final 4c. If yes, who delineated the jurisdictional areas? Name (if known): Agency/Consultant Company: Other: 4d. If yes, list the dates of the Corps jurisdictional determinations or State determinations and attach documentation. 5. Project History 5a. Have permits or certifications been requested or obtained for this project (including all prior phases) in the past? ? Yes ® No ? Unknown 5b. If yes, explain in detail according to "help file" instructions. 6. Future Project Plans 6a. Is this a phased project? ? Yes ® No 6b. If yes, explain. Page 3 of 10 PCN Form - Version 1.3 December 10, 2008 Version C. Proposed Impacts Inventory 1. Impacts Summary 1 a. Which sections were completed below for your project (check all that apply): ? Wetlands ? Streams - tributaries ® Buffers ? Open Waters ? Pond Construction 2. Wetland Impacts If there are wetland impacts proposed on the site, then complete this question for each wetland area impacted. 2a. 2b. 2c. 2d. 2e. 2f. Wetland impact Type of jurisdiction number - Type of impact Type of wetland Forested (Corps - 404, 10 Area of impact Permanent (P) or (if known) DWQ - non-404, other) (acres) Temporary T W1 ? P ? T ? Yes ? Corps ? No ? DWQ W2 ? P ? T ? Yes ? Corps ? No ? DWQ W3 ? P ? T ? Yes ? Corps ? No ? DWQ W4 ? P ? T ? Yes ? Corps ? No ? DWQ W5 ? P ? T ? Yes ? Corps ? No ? DWQ W6 ? P ? T ? Yes ? Corps ? No ? DWQ 2g. Total wetland impacts 2h. Comments: 3. Stream Impacts If there are perennial or intermittent stream impacts (including temporary impacts) proposed on the site, then complete this question for all stream sites impacted. 3a. 3b. 3c. 3d. 3e. 3f. 3g. Stream impact Type of impact Stream name Perennial Type of jurisdiction Average Impact number - (PER) or (Corps - 404, 10 stream length Permanent (P) or intermittent DWQ - non-404 width (linear Temporary (T) (INT)? , other) (feet) feet) S1 ?P?T ?PER ?Corps ? INT ? DWQ 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 3i. Comments: Page 4 of 10 PCN Form - Version 1.3 December 10, 2008 Version 4. Open Water Impacts If there are proposed impacts to lakes, ponds, estuaries, tributaries, sounds, the Atlantic Ocean, or any other open water of the U.S. then individually list all open water impacts below. 4a. 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 4f. 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. Pond ID Proposed use or purpose Wetland Impacts (acres) Stream Impacts (feet) Upland b (acres) num er 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 Stream name mitigation (square feet) (square feet) Temporary T impact required? B1 ®P ? T Storm Outfall Crabtree Creek ? Yes ® No 600 400 B2 ?P?T ?Yes ? No B3 ?P?T ?Yes ? No 6h. Total buffer impacts 600 400 6i. Comments: Buffer impact for outfall of stormwater BMP. Diffuse flow to the buffer is not possible due to topography. Page 5 of 10 PCN Form - Version 1.3 December 10, 2008 Version D. Impact Justification and Mitigation 1. Avoidance and Minimization 1a. Specifically describe measures taken to avoid or minimize the proposed impacts in designing project. Development plan includes no other impacts to the buffers. Proposed impact is require DWQ BMP manual and Neuse Buffer Rules. 1b. Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques. With the exception of the stormwater outfall, the site development plan does not create any additional impacts to the buffer. 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 6 of 10 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 7 of 10 PCN Form - Version 1.3 December 10, 2008 Version E. Stormwater Management and Diffuse Flow Plan (required by DWQ) 1. Diffuse Flow Plan 1 a. Does the project include or is it adjacent to protected riparian buffers identified ® Yes ? No within one of the NC Riparian Buffer Protection Rules? 1 b. If yes, then is a diffuse flow plan included? If no, explain why. Comments: Diffuse flow to the buffer is not possible given the topography of the site ? Yes ® No and the buffer. A stormwater wetland is proposed to provide 30% nutrient reduction and will discharge directly to crabtree creek. . 2. Stormwater Management Plan 2a. What is the overall percent imperviousness of this project? (20.0) % 2b. Does this project require a Stormwater Management Plan? ? Yes ® No 2c. If this project DOES NOT require a Stormwater Management Plan, explain why: Project is excempt from City of Raleigh Stormwater Regulations. However, a report has been prepared which outlines the design and performance of the stormwater wetland. 2d. If this project DOES require a Stormwater Management Plan, then provide a brief, narrative description of the plan: ® Certified Local Government 2e. Who will be responsible for the review of the Stormwater Management Plan? ? DWQ Stormwater Program ? DWQ 401 Unit 3. Certified Local Government Stormwater Review 3a. In which local government's jurisdiction is this project? City of Raleigh ® Phase II 3b. Which of the following locally-implemented stormwater management programs ? NSW apply (check all that apply): ? USMP ? Water Supply Watershed ? Other: 3c. Has the approved Stormwater Management Plan with proof of approval been ? Yes ® No attached? 4. DWQ Stormwater Program Review ? Coastal counties 4a. Which of the following state-implemented stormwater management programs apply El HQW ? 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 5b. Have all of the 401 Unit submittal requirements been met? ? Yes ? No Page 8 of 10 PCN Form - Version 1.3 December 10, 2008 Version F. Supplementary Information 1. Environmental Documentation (DWQ Requirement) 1 a. 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. Sanitary Sewage generated from the proposed facilities will be conveyed to the City of Raleigh Sewer main located to the east of the site running along Crabtree Creek. Page 9 of 10 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 ® El Yes No habitat? 5b. Have you checked with the USFWS concerning Endangered Species Act ? Yes ® No impacts? 5c. If yes, indicate the USFWS Field Office you have contacted. El Raleigh ? Asheville 5d. What data sources did you use to determine whether your site would impact Endangered Species or Designated Critical Habitat? N/A 6. Essential Fish Habitat (Corps Requirement) 6a. Will this project occur in or near an area designated as essential fish habitat? ? Yes ® No 6b. What data sources did you use to determine whether your site would impact Essential Fish Habitat? 7. Historic or Prehistoric Cultural Resources (Corps Requirement) 7a. Will this project occur in or near an area that the state, federal or tribal governments have designated as having historic or cultural preservation ? Yes ® No status (e.g., National Historic Trust designation or properties significant in North Carolina history and archaeology)? 7b. What data sources did you use to determine whether your site would impact historic or archeological resources? City of Raleigh Planning Department 8. Flood Zone Designation (Corps Requirement) 8a. Will this project occur in a FEMA-designated 100-year floodplain? ? Yes ® No 8b. If yes, explain how project meets FEMA requirements: 8c. What source(s) did you use to make the floodplain determination? Flood plan as shown on project survey. Jason Kennedy % i A 3-25-09 Applicant/Agent's Printed Name UAgen s Signature Date is (Agent's sy if an aut horization letter from the applicant is rovided. Page 10 of 10 PCN Form - Version 1.3 December 10, 2008 Version 9TSl,-sTS W6 :XQJ 9TZ9-61E (6T6 :auogd 919za aupo.193 W-ION "Quo OZT a7rng 9A.FJa }saaod .fouaffag 00th Yd 'NDIS3a HD f? I m aJ T? N 4 -? C7 w dVW lDbdWl 21333(18 MAIN 3sn3N 901-90 -"ON 1031Obd 60OZ•SZ•£ 91YO dM DVdWl 321d:) 30 wnnNI1N0:) AINnOD DIVM ,OZ = „ L :31VDS F CV co O O 0 a