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Home My WebLink About20090204 Ver 1_401 Application_20090309 ~MULKEY ENGINEERS S, CONSULTANTS February 27, 2009 US Army Corps of Engineers Asheville Regulatory Field Office 151 Patton Avenue, Room 208 Asheville, North Carolina 28801-5006 Attention: Loretta A. Beckwith, Regulatory Agent Subject: NWP 14 Application for Pipe Extension, Little Savannah Road Widening, Western Carolina University, West Campus Millennial Initiative Neighborhood 1 Project in Jackson County Dear Ms. Beckwith, Mulkey, Inc. has been retained by Western Carolina University (WCD) to provide design and permitting services for development associated with the Millennial Initiative project. WCU plans to construct Neighborhood 1 of their 344-acre Millennial Initiative on West Campus (Figure 1, attached). Neighborhood 1 comprises approximately 40 acres and will include 280,000 square feet of academic space, 65,580 square feet of private development space, and 262,500 square feet of housing space. The initial anchor of Neighborhood 1 will be the 145,OOO-square foot School of Health and Gerontological Sciences building. An environmental assessment (EA) and fmding of no significant impact (FONS!) document was submitted to the State Clearing House and is open for comments until March 2, 2009. Please accept this letter as a request for a NWP 14 to extend the Long Branch Creek pipe on Little Savannah Road at the project site. Development of the Millennial Initiative project will require roadway improvements for additional lane capacity for dedicated right and left turn lanes on Little Savannah Road. The road widening will require use of a junction box . and extension of the existing reinforced concrete pipe (downstream side) on Long Branch Creek. The new junction box and pipe components will comply with N.C. Department of Transportation design guidelines. Unavoidable permanent impacts will occur to jurisdictional resources due to the placement of the junction box and a 44 linear foot, 60-inch diameter reinforced concrete pipe in the channel. Long Branch Creek at the site is classified as Class C HQW and drains to Cullowhee Creek, approximately 1 mile downstream, which is classified as Trout waters. Road widening and extension of the pipe will create permanent impacts of approximately 2,052 square feet (0.047 acre) of trout buffer along Long Branch Creek. MULKEY INC. 5750 TRYON ROAD GARY, NG 27511 PO Box 33127 RALEIGH, NG 27535 PH: 919-B51-1912 FAX: 919'B51-191 B WWW.MULKEYINC.COM February 27, 2009 Page 2 This permit application consists of the cover letter, Pre-Construction Notification (pCN) form, Agent Authorization, a project vicinity topographic map (Figure 1), project study area aerial map (Figure 2), permit drawings, erosion and sediment control approval, BIvIP Supplement forms, floodplain development permit, signed EA/FONSI conclusion statement, and half-size plan sheets depicting the site development plan. By copy of this letter we are also requesting issuance of a corresponding 401 General Certification 3704. A check for $240.00 is submitted to the NC Division of Water Quality as payment for a minor water quality certification application. If you have any questions or concerns regarding this project or the permit application package, please contact Cindy Carr at Mulkey, Inc. at (919) 858-1871 or by email to ccarr@mulkeyinc.com. Thank you. S?!:a 0wv Cindy Simpso2f"arr Mulkey, Inc. Attachments: Pre-Construction Notification (pCN) Form Agent Authorization Figure 1 Project Location Map Figure 2 Project Study Area Map Half-Size Permit Drawings (sheets S-l, S-la) Letter of Approval, Erosion and Sediment Control Plan BMP Supplement Forms Floodplain Development Permit Signed EA/FONSI Statement Half-Sized Plan Sheets (C-2.10; -2.11; -2.50; D-1.06) Copies w / Attachments: NC Division 6fWater Quality 401/Wetlands Unit, Raleigh (5 copies, CD) NC Wildlife Resources Commission, Waynesville U,S. Fish and Wildlife Service, Asheville Mr. Wiley D. Harris, AIA, Western Carolina University Mr. Chad Roberson, AlA, PBC + L Architecture Mr. Warren Sugg, P.E., Mulkey, Inc, Of; WA"r-l:~ O~ Qc/ i;j y - r > - - --I o """ Office Use Only: Corps action ID no. DWQ project no. Form Version 1.0 November 2008 Pre-Construction Notification (PCN) Form A. Applicant Information 1. Processing 1 a. Type(s) of approval sought from the lSl Section 404 Permit D Section 10 Permit Corps: 1 b. Specify Nationwide Permit (NWP) number: 14 or General Permit (GP) number: 3 704 1 c. Has the NWP or GP number been verified by the Corps? lSl Yes D No 1d. Type(s) of approval sought from the DWQ (check <;:III that apply): lSl401 Water Quality Certification - Regular D Non-404 Jurisdictional General Permit D 401 Water Quality Certification - Express D Riparian Buffer Authorization 1e. Is this notification solely for the record For the record only for DWQ 401 For the record only for Corps Permit: because written approval is not required? Certification: DYes lSl No DYes lSl No H. Is payment into a mitigation bank or in-lieu fee program proposed for mitigation DYes lSl No of impacts? If so, attach the acceptance letter from mitigation bank or in-lieu fee program. 1 g. Is the project located in any of NC's twenty coastal counties. If yes, answer 1 h DYes lSl No below. 1 h. Is the project located within a NC DCM Area of Environmental Concern (AEC)? DYes lSl No 2. Project Information 2a. Name of project: Western Carolina University Millennial Initiative Project 2b. County: Jackson 2c. Nearest municipality I town: Cullowhee 2d. Subdivision name: nla 2e. NCDOT only, T.I.P. or state n/a project no: 3. Owner Information 3a. Name on Recorded Deed: State of North Carolina clo State Property Office . 3b. Deed Book and Page No. 1470/283 3c. Responsible Party (for LLC if nla applicable): 3d. Street address: 1321 Service Center 3e. City, state, zip: Raleigh, NC 27699 3f. Telephone no.: 3g. Fax no.: n/a 3h. Email address: nla Page 1 of 13 peN Form - Version 1.0 November 2008 Version Section A. Applicant Information, continued 4. Applicant Information (if different from owner) 4a. Applicant is: ~ Agent cgJ Other, specify: Project Manager 4b. Name: Wiley Harris, AlA, Director of Facilities Planning, Design & Construction 4c. Business name Western Carolina University (if applicable): 4d. Street address: 3476 Old Cullowhee Road 4e. City, state, zip: Cullowhee, NC 28723 4f. Telephone no.: (828) 227-7441 4g. Fax no.: nla 4h. Email address: n/a 5. Agent/Consultant Information (if applicable) 5a. Name: Cindy Carr 5b. Business name Mulkey, Inc. (if applicable): 5c. Street address: 6750 Tryon Road [Mail: P.O. Box 33127] 5d. City, state, zip: Cary, NC 27518 [Mail: Raleigh, NC 27636-3127] 5e. Telephone no.: (919) 858-1871 5f. Fax no.: (919) 851-1918 5g. Email address: ccarr@mulkeyinc.com Page 2 of 13 peN Form - November 2008 Version B. Project Information and Prior Project History 1. Property Identification 1a. Property identification no. (tax PIN or parcel 10): 7549-63-7272 1 b. Site coordinates (in decimal degrees): 35.3043035'N - 83.2025898'W 1c. Property size: 273.32 acres 2. Surface Waters 2a. Name of nearest body of water (stream, river, etc.) to Long Branch Creek proposed project: 2b. Water Quality Classification of nearest receiving water: C - HQW 2c. River basin: Little Tennessee River Page 3 of 13 PCN Form - Version 1.0 November 2008 Version B. Project Information and Prior Project History 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 proposed project is located on Little Savannah Road, approximately one-half mile west of NC 107 and the main Western Carolina University (WCU) campus. Little Savannah Road (SR 1367) is an existing two-lane transportation facility maintained by NC Department of Transportation. Jackson County Airport is immediately northwest of the project area. East and south of the project study area is a mix of rural development including small apartment complexes, mixed residences, a volunteer fire company, and a recycling and waste center. Land use in the proposed project area (Neighborhood 1 - see 3e below) consists of naturally forested areas and small maintainedldisturbed open areas. 3b. List the total estimated acreage of all existing wetlands on the property: 0.185 acre 3c. List the total estimated linear feet of all existing streams (intermittent and perennial) on the property: 1,521 LF of perennial stream (Long Branch Creek) and 374 LF of intermittent unnamed tributary to Long Branch Creek. 3d. Explain the purpose of the proposed project: The proposed project will construct the School of Health and Gerontological Sciences Building as part of the new Neighborhood 1 site. Neighborhood 1 will include a mix of academic, private, and residential development that will be part of WCU's Millennial Initiative project. Construction of the Millennial Campus facilities will require roadway widening and lane improvements to Little Savannah Road, including widening at the Long Branch Creek crossing. TheLittle Savannah Road widening will include extension of the existing 60-inch diameter corrugated metal pipe on Long Branch Creek. 3e. Describe the overall project in detail, including the type of equipment to be used: WCU plans to construct Neighborhood 1 of their 344-acre Millenniallnitiative on West Campus. Neighborhood 1 comprises approximately 40 acres and will include 280,000 square feet of academic space, 65,580 square feet of private development space, and 262,500 square feet of housing space. The initial anchor building for Neighborhood 1 will be the 145,000-square foot School of Health and Gerontological Sciences building. Construction of the overall project will involve clearing, grading, and landscaping pertaining to the construction of buildings, parking, and other infrastructure. Utility improvements related to the proposed infrastructure projects include new water and sewer line connections from the School of Health and Gerontological Sciences building to existing lines along Little Savannah Road. Roadway improvements will add an additional 30 feet of lane capacity for dedicated left and right turn lanes entering the Millenniallnitiative campus. Widening of Little Savannah Road will require extending the existing pipe on Long Branch Creek. Construction will involve typical construction equipment such as graders, bulldozers, cranes, track hoes, dump trucks, and road paving equipment. The School of Health and Gerontological Sciences building construction and associated infrastructure will generate approximately 6.0 acres of new impervious surface. Page 4 of 13 peN Form - November 2008 Version B. Project Information and Prior Project History 4. Jurisdictional Determinations 4a. Have jurisdictional wetland or stream determinations by the Corps or State been requested or obtained for this property / lZJ Yes o No o Unknown project (including all prior phases) in the past? 4b. If the Corps made the jurisdictional determination, what type o Preliminary lZJ Final of determination was made? 4c. If yes, who delineated the jurisdictional areas? Agency/Consultant Company: Mulkey Inc. Name (if known): Brian Dustin Other: 4d. If yes, list the dates of the Corps jurisdictional determinations or State determinations and attach documentation. November 13, 2007 5. Project History 5a. Have permits or certifications been requested or obtained for DYes o No lZJ Unknown this project (including all prior phases) in the past? 5b. If yes, explain in detail according to "help file" instructions. In a letter dated February 16, 2009, the NCDENR Division of Land Resources, Land Quality Section has issued a Letter of Approval (with modifications) for the Erosion and Sediment Control Plan. 6. Future Project Plans 6a. Is this a phased project? lZJ Yes ONo 6b. If yes, explain. In 2000, the North Carolina General Assembly authorized a Millennial Campus at each University of North Carolina member campus, including WCU. The purpose of the Millennial Campus is to promote public-private partnerships between the University and businesses to improve educational opportunities for students, as well as provide for economic development in the region. WCU plans to construct the 344-acre Millennial Initiative in phases, with utility and transportation improvements and the School of Health and Gerontological Sciences building being the first construction project. Page 5 of 13 PCN Form - November 2008 Version C. Proposed Impacts Inventory 1. Impacts Summary 1a. Which sections were completed below for your project (check all that apply): o Wetlands [gJ Streams - tributaries o Buffers o Open Waters o 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 Type of wetland Forested (Corps - 404, 10 Area of impact (acres) Permanent (P) or impact (if known) OWQ - non-404, other) Temporary (T) W1 0 PDT DYes 0 No o Corps none OOWQ W20POT DYes 0 No o Corps OOWQ W3 0 PDT DYes 0 No o Corps OOWQ W4 0 PDT DYes 0 No o Corps OOWQ W5 0 PDT DYes 0 No o Corps OOWQ W6 0 PDT DYes 0 No o Corps OOWQ 2g. Total wetland impacts none 2h. Comments: Wetland impacts will be avoided. 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. Stream impact Type of Stream name Perennial (PER) or Average stream width (feet) Impact number - impact intermittent (INT)? length Permanent (P) or (linear feet) Temporary (T) Junction Long Branch S1 [gJPOT Box and [gJ PER DINT 10 55 Pipe (fill) Creek 82 OPOT o PER DINT S3 OPOT o PER DINT 84 OPOT o PER DINT 85 OPOT OPER DINT 86 OPOT OPER DINT 39. Total stream and tributary impacts 55 LF 3h. Comments: Impacts will be created by extending the existing culvert on Long Branch Creek. The junction box and pipe extension will create 55 linear feet of impacts. Page 6 of 13 peN Form - Version 1.0 November 2008 Version C. Proposed Impacts Inventory, continued 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 impact number waterbody Type of impact Waterbody type Area of impact (acres) - Permanent (if (P) or applicable) Temporary (T) 01 rI....... rI-r- 1\.1__- UI'"'UI i'IUIIC 02 DpDT 03 DpDT 04 DpDT 4f. Total open water impacts none 4g. Comments: Page 7 of 13 peN Form - November 2008 Version C. Proposed Impacts Inventory, continued 5. Pond or Lake Construction If pond or lake construction pro~ osed, then complete the chart below. 5a. 5b. 5c. 5d. 5e. Wetland Impacts (acres) Stream Impacts (feet) Upland PondlD Proposed use or (acres) number purpose of pond Flooded Filled Excavated Flooded Filled Excavated Flooded P1 P2 5f. Total none 5g. Comments: 5h. Is a dam high hazard permit required? DYes DNo 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 any impacts require mitigation, then you MUST fill out Section D of this form. 6a. o Neuse o Tar-Pamlico o Other: Project is in which protected basin? o Catawba o Randleman 6b. 6c. 6d. 6e. 6f. 6g. Buffer impact number - Reason Buffer Zone 1 impact (square Zone 2 impact Permanent (P) for impact Stream name mitigation feet) (square feet) or Temporary required? (T) B1 DpDT DYes DNo B2 DpDT DYes DNo B3 DpDT DYes DNo 6h. Total buffer impacts None 6i. Comments: There are no NCDENR designated river basin riparian buffers within the project boundaries. Long Branch Creek drains to a NCDENR designated trout stream (Cullowhee Creek) and is therefore subject to trout buffer rules. Trout buffer impacts include 2,051.76 square feet (0.047 acre) of permanent impacts at the pipe extension and within the adjacent right-of-way maintenance area. Page 8 of 13 PCN Form - November 2008 Version 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. A Campus Master Plan has been completed to provide an overall concept plan for the Millenniallnitiative and to identify potential impact areas. The site plan for WCU's Neighborhood 1 on West Campus was designed with a focus on avoiding and minimizing impacts to wetlands and streams, as well as preserving other significant natural features of the area. The School of Health and Gerontology site plan is in compliance with the WCU Millennial Initiative Campus Master Plan. Wetlands identified within the project area for Neighborhood 1 have been completely avoided and will not be imn::ldArI ....,----_. During construction of the pipe extension on Long Branch Creek, construction equipment will be operated from the existing roadway and will not enter the stream. A 25 foot widebuffer will be maintained along both sides of Long Branch Creek below the culvert extension. 1 b. Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques. Measures to minimize potential stream impacts include, but are not limited to, provisions for waste materials and storage, stormwater management measures, and appropriate road maintenance measures. Limiting in-stream activities and replanting stream banks immediately following the completion of grading can further reduce impacts. Tree protection fencing in combination with silt fencing will be constructed around the wetlands in order to protect them during construction. Temporary diversions may be constructed at the toe of the proposed fill slope to divert sediment-laden water from the construction site to temporary sediment traps (for drainage areas less than five acres). The traps will be sized to control the ten-year storm event. Check dams will be placed in the temporary diversions to restrict the velocity of flow in these channels thereby minimizing erosion. Silt fence will be installed between the diversion berms and adjacent areas to further ensure that silt does not impact offsite properties and the stream located at the low point of the property. The campus will have a closed stormwater system. All inlets into the proposed storm drainage system will be protected to prevent sediment from entering the pipe system and being conveyed downstream. Construction entrances will be installed at any entry points into the site to provide a buffer area where construction traffic can drop their mud and sediment to avoid transporting this material onto private and public roads, to control erosion from surface runoff, and to help control dust. The proposed erosion control measures will be installed at the beginning of the construction, prior to any land disturbance. All disturbed areas brought to final grade will be stabilized with permanent vegetation within fifteen days. Stormwater controls will be designed to maintain pre-development hydrographic conditions for the 1-yr, 24-hr storm and will be maintained by the University. The final design will encompass a combination of infiltration features as well as a closed piping network and a stormwater dissipation for additional storm water control. 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? DYes ~No 2b. If yes, mitigation is required by (check all that apply): D DWQ D Corps 2c. If yes, which mitigation option will be used for this project? D Mitigation bank D Payment to in-lieu fee program D Permittee Responsible Mitigation Page 9 of 13 PCN Form - Version 1.0 November 2008 Version D. Impact Justification and Mitigation, continued 3. Complete if Using a Mitigation Bank 3a. Name of Mitigation Bank: 3b. Credits Purchased (attach receipt and letter) Type Quantity 3c. Comments: 4~ Comp!ete if Making a Payment to In-lieu Fee Program 4a. Approval letter from in-lieu fee program is attached. DYes 4b. Stream mitigation requested: linear feet 4c. If using stream mitigation, stream temperature: warm, cool, cold 4d. Buffer mitigation requested (OWQ 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 Sa. If using a permittee responsible mitigation plan, provide a description of the proposed mitigation plan. 6. Buffer Mitigation (State Regulated Riparian Buffer Rules) - required by DWQ 6a. Will the project result in an impact within a protected riparian buffer that requires DYes ~No buffer mitigation? 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 Reason for impact Total impact Multiplier Required mitigation (square feet) (square feet) Zone 1 3 (2 for Catawba) Zone 2 1.5 Total buffer mitigation required: 6c. 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). 6d. Comments: Page10of13 peN Form - November 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 DYes [8J No within one of the NC Riparian Buffer Protection Rules? 1b. If yes, then is a diffuse flow plan included? DYes DNo 2. Determination if the Proiect Requires a Stormwater Manaaement Plan 2a. Does the project require a Non-404 Jurisdictional General Permit? DYes [8J No 2b. Is the project subject to General Certification 3704 or 3705? [8J Yes DNo 3. Determination of Stormwater Review Jurisdiction 3a. Is this project subject to any of the following state-implemented stormwater 0 Coastal counties management programs (check all that apply)? [8J HQW 0 ORW If so, attach one copy of the approval letter from the DWQ and one copy of the 0 Session Law 2006-246 approved stormwater management plan. [8J Other: Trout 3b. In which local government's jurisdiction is this project? Jackson County 3c. Is this local government certified to implement a state stormwater program? DYes [8J No If so, attach one copy of the approval letter from the local government and one copy of the approved stormwater management plan (or one copy of the approved Stormwater management plan stamped as approved). 4. Information Required for DWQ 401 Unit Stormwater Review 4a. What is the overall percent imperviousness accordinq to the most current site plan? 6% 4b. Does this project contain any areas that meet the criteria for "high density" per DYes [8J No General Certifications 3704 and 3705? 4c. If the site is over 24% impervious andlor contains high density areas, then provide a brief narrative description of the stormwater management plan. 4d. Has a completed BMP Supplement Form with all required items been submitted [8J Yes DNo for each stormwater BMP? Page 11 of 13 PCN Form - Version 1.0 November 2008 Version F. Supplementary Information 1. Environmental Documentation (DWQ Requirement) 1a. Does the project involve an expenditure of public (federal/state/local) funds or the ~Yes o No use of public (federal/state) land? 1b. 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 DNo (North Carolina) Environmental Policy Act (NEPAlSEPA)? 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: An EAlFONSI has been submitted to the State Clearing House for approval 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, DYes ~ No or Riparian Buffer Rules (15A NCAC 2B .0200)? 2b. Is this an atter-the-fact permit application? DYes ~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 DYes ~ 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. The project site is planned for phased development of the Millenial Campus. Protection of downstream water quality will be provided through the various levels of Federal, State, and local permit review processes. These include the North Carolina Division of Land Resources (NCDLR) sediment and erosion control permit for land disturbing activities. All sediment and erosion control plans must control surface water run-off, limit the size of the area exposed at anyone time, avoid increases in velocities of storm water discharge, and identify on-site areas subject to severe erosion, as well as those adjacent or nearby off-site areas that are especially vulnerable to damage from erosion and sedimentation. Jackson County land use ordinances, including those that address Flood Damage Prevention; Land Development Compliance; Mountain and Hillside Development; Noise; Sediment Control; and Watershed Protection will also offer another level of water quality protection for this project and other projects in the County. 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. Waste water will be treated at local treatment plant. Page 12 of 13 peN Form - Version 1.0 November 2008 Version F. Supplementary Information, continued 5. Endangered Species and Designated Critical Habitat (Corps Requirement) 5a. Will this project occur in or near an area with federally protected species or habitat? DYes ~No 5b. Have you checked with the USFWS concerning Endangered Species Act impacts? ~Yes DNo 5c. If yes, indicate the USFWS Field Office you have contacted. o Raleigh ~ Asheville 5d. What data sources did you use to determine whether your site would impact Endangered Species or Designated Critical Habitat? Review of NC Natural Heritage Program mapping of known populations; field investigations for suitable habitat and presence of protected species; scoping comments requested from NC Wildlife Resources Commission and US Fish & Wildlifer Service. 6. Essential Fish Habitat (Corps Requirement) 6a. Will this project occur in or near an area designated as essential fish habitat? 0 Yes ~No 6b. What data sources did you use to determine whether your site would impact Essential Fish Habitat? Review of NC Natural Heritage Program maps and agency scoping letters. 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 status (e.g., National Historic Trust designation or properties significant in North Carolina history and archaeology)? ~Yes DNo 7b. What data sources did you use to determine whether your site would impact historic or archeological resources? Phase I and Phase II cultural surveys were conducted and reported by MACTEC Engineering and Consulting in April and July 2008. Survey results are included in the EAlFONSI document. 8. Flood Zone Designation (Corps Requirement) 8a. Will this project occur in a FEMA-designated 1 DO-year floodplain? DYes ~No 8b. If yes, explain how project meets FEMA requirements: 8c. What source(s) did you use to make the floodplain determination? FEMA flood study map DFIRM Panel No. 7549, Jackson County, available online www.ncfloodmaps.com. Applicant/Agent's Printed Name ~ 3J~/o9 ~, NPY CARR. Date Page 13 of 13 peN Form - November 2008 Version ~^~ WESTERN CAROLINA UNIVERSITY FACIlITIES MANAGEMENT February 27,2009 W mIen M Sugg, P E. Mulkey Engineers & Consultants 6750 Tryon Rd Cary, NOlth Carolina 27518 Su~ject: School of Health and Gerontology Building sea ill #0606788-02B Code 40629 Item 301 Dear Mr Sugg: Mulkey, Inc. is authOlized to represent Western Carolina University as authorized agent fOl pmposes of submitting a Pre-Construction Notification (PCN) application for appropriate State and Federal permits for installation of a culvert extension. Sincerely, L )2-W ~ Joe Walker, P E Associate Vice Chancellor for Facilities Management /rg 3476 Old Cullowhee Road Cullowhee, NC 28723 Office: (828) 227-7442 Fax: (818) 227-7198 \^lestern Carolina University is a campus of the Univer'sity of l"-.Jorth Carolina and an affirmative action/equal opportunity institution , . I '(/'If' . -':':'1 I r' " -.. 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'-.. -... -:\fJ; I .' .. -- I ,'" i 1.-. ... ......-J l ~_ .:-...',;.......\ II.J.... ~ J ). ,.. .,. ,. ,..; '- . ........ . -i ,,, ~ ~-... .. ~, ""'-. -/,~/.:.-. . ~\.../~".....:,:.~"'\'....~ ',... +, ~:~~ 'It ,i""II'-'~ I .:'\........~+ ,.-.--,_~,..." ..,........'" .___ .......~..:\ _,;~....;.. ~"" 10 ...... \ '"_ '. ... .,~:~ . ~ ...."t... '.. ~ ~ ~~_, . Legend D Study Area Boundary ~MULKEY ENGINEERS & CONSULTANTS PROJECT LOCATION Western Carolina University Milleniallnitiative Jackson County, North Carolina Figure No. I 1 :24,000 2 o 0.1 0.2 0.4 0.6 Miles 0.8 USGS 7.5- Minule Topographic Quadrangle: Soulh Sylva / (' ! I I I / I I ( / i i I 1 I i / / I / ! ! J i f / . \ \ " - \ . \ \ \ " --~:9 ~----80(;2'\ .-d -------- '\ RO SR 132/ ~.~-~ ~-_../'--'-- I EX!~r~ lillLBT-GF"~~Y- /../- - -- I -~ ~ -.... _---."\7iiJ~(, .-/ ./ _. ----...----- ~ ..........- ...--- --------- --f~-- ---- --....~ - ----_./ --- - ---= ~ -~ <~___-;?: _;.:~ ~=-_. _ r- _ -~~ ~ ~~:.-~v ~=~~~~8 _-----:=-_-=-~--/-~--~. -::::::::::=:= . ~~~'<l2i~O~ =-- , ~ - r! / I 1-- -_.;;?;::,~--;;"~-:::::;:::'-- .-------- - - - - --- ((}/ ; (~ ! i r..... ,P,~;,f(~Z-------_.---- - . - _-- --- SCALE: r = 30' L-!-- - 1/-.- v"~:~~ ~ ~. . ;' - [-:0 /?w --- - ---- 30' \ / /~.~::_-~~~)~~g~g~~W!y:/-::%1~z=-- - 0' 60' \ \,,,,4<" .:::::::---0.""'::::::'-' ~';": C7:"'::-';:'~o=~ 44.0 LF 60" RCP ~ .__::',,"hlil,~Y/ ~ ~ ~ --... CD @ WCU School of Health & Gerontology Building Stream Impact Exhibit Map -F-MULKEV ENGINEERS & CONSULTANTS Cullowhee, North Carolina EXlSTING RIGHT OF WAY TO NEW RIGHT OF WAY BUFFER IMPACT = 1,082,34 SF; 0.02 AC. PERMENANT BUFFER IMPACT (OUTSIDE RIGHT OF WAY) = 969.42 SF; 0.02 AC. S-1 PO Sex 33127 RALEIGH, N.C. 27636 (919J 851-1912 (9191851-1918 (F"AXl WWW.MULKEYINC.CCM . - "' - ~ -------- - - - - ,-' ~ .- ~ --1- ~c -- - - - - .,--- -1 - - - I -~ - I r I II . .. I i__ ----,-------,-~l----- ______.J_________L..____ --,-~-, J L ___ - __ ==_=l__jS~G-louND--I----- _u_ -+I---J ___j 2 204------ I ~l~eN--,n--------+-----I---n-f-nm--1 -~ "__-L~~.L -- -- ~~ -_.~ .--- nep=T204~OO - -j -,' - .~'~-l- - - --I - -., -~~ ~ . 1___;__.__1 ,\_L ! -n-----f..~-T . --nu..---Ji------ - ---~--\- 11..~....._l'R1pOSED GRQl1N))........___m_ . _1&00 - J~_-~~ r--:~=l " ~ j=- -. =-F-=- -- -_.:- -]A~~j~=~~~l~=~-=-- j 2t!!}~ .. .. --- In- 7" -2T-9B-- -1- . " '11.g~}Cp- - 1- - -1"-- ..- ~ -.. - ~~ ~ -, ~- --~Pf"2.02" -\-. -----1.--- -----l------ ---i----m-~ ____un .. . J_____ ---+.::..:...:....., - -'=r--- . -I __________,_n___1 . 21192 ~nm --~~9t~5LI--.~LQP~Ci:81:~- ~_;~;~2~1._--1 ......:.1=--, ,---- -- I - -L---I---t---I-----, I _?!.1?,~ I ; I ~ ~. I 10+00 11 +00 WCU School of Health & Gerontology Building Stream Impact Exhibit Map Cullowhee, North Carolina ~MULKEV EN(3INEERS & CONSULTANTS S-1a PO Bex 33127 RAL.EIGH, N.C. 27636 (919) BSI-1912 (91 9) as 1 -1 91 a IF"AXl WWW.MULKEYINC.COM AVA NCDENR North Carolina Department of Environment and Natural Resources Division of Land Resources Land Quality Section Beverly Eaves Perdue, Go'!(Onl(,f Dee Freeman, SeclHi.afY James D. Simons, PG, PE Director and State Geologist February 16, 2009 LETTER OF APPROVAL WITH MODIFICATIONS Western Carolina Unversity ATTN: Joe Walker, Associate Vice Chancellor Facilities Management 3476 Old Cullowhee . Cullowhee, North Carolina 28723 RE: Project Name: WCU School of Health & Gerontology Building Acres Approved: 11.05 Project 10: JACKS-2009-003 County: Jackson Street and City: NC 1367 Butte Road, Cullowhee River Basin: LittleTennessee Stream Classification: C, Tr Latitude: 35.3083 Longitude: -83.2000 Submitted By: Mulkey Engineers & Consultants, Warren M. Sugg Date Received by LOS: 1/23/2009 Plan Type: New Submittal Dear Mr. Walker: This office has reviewed the subject erosion and sedimentation control plan. We find the plan to be acceptable with modifications and hereby issue this letter of Approval With Modifications. The Modifications Required for Approval are listed on the attached page, This plan approval shall expire three (3) years following the date of approval, if no land-disturbing activity has been undertaken, as is required by Title 15A NCAC 4B .0129. Please be advised that Title 15A NCAC 4B ,0118(a) requires. that a copy of the approved erosion control plan be on file at the job site. Also, you should consider this letter to give the Notice required by G,S, 113A-61,1 (a) of our right of periodic inspection to insure compliance with the approved plan. 2090 us Highway 70, Swannanoa, North Carolina, 28778-8211 Telephone 828-296-4500 Fax 828-299-7043 www.enr.state.nc.us An Equal Opportunity 1 Affirmalive Action Employer N~rthCarolina Natl/fallll Letter of Approval with Modifications Joe Walker, Associate Vice Chancellor Facilities Management, Western Carolina Unversity February 16, 2009 . Page ~. of 3 North Carolina's SedimEmtation ... ~olluti()n. Control Program is performance-oriented, reqUiring protection of existing"'natura:f resources and adjoining properties. If, following the commencement of this project, it is determined that the erosion and sedirnentation control plan is inadequate to meet the requirements of the Sedimentation Pollution Control Act of 1973 (North Carolina General Statute 113A-51 through 66), this office may require revisions to the plan and implementation of the revisions to insure compliance with the Act. Acceptance and approval of this plan is conditioned upon your compliance with Federal and State water quality laws, regulations, and rules, In addition, local city or county ordinances or rules may also apply to this land-disturbing activity. This approval does not supersede any other permit or approval. Please be aware that your project wili be covered by the enclosed NPDES General Stormwater Permit NCG010000 (Construction Activities), You should first become familiar with all of the requirements for compliance with the enclosed general permit. Please note that this approval is based in part on the accuracy of the information provided in the Financial Responsibility Form, which you have provided. You are requested to file an amended form if there is any change in the information included on the form. In addition I it would be helpful if you notify this office of the proposed starting date for this project. Please notify Katherine Marciniak qr myself if you plan to have a pre-construction conference. Your cooperation is appreciated. Sincerely, ,.-/ "J'.. . I. :1 :"-. l t(..-1"l_S ''\j YJ Starr Silvis, PE Land Quality Section Enclosures: Certificate of Approval Modifications Required for Approval NPDES Permit cc: Mulkey Engineers & Consultants, Warren M. Sugg G:\LQ\Jackson\E&SC\2009-003 WCU School of Health and Gerontology Bldg\LoAwM 2-16-209.doc Letter of Approval with Modifications Joe Walker, Associate Vice Chancellor Facilities Mana~~Gm('nt, Western Carolina Unversity February 16, 2009 Page 3 of 3 MODIFICATIONS REGt.:;'F~.:.,::JFOR APPROVAL Project Name: WCU School of Health & Gero:'" '}~~<W Building Project 10: JACKS-2009-003 County: Jackson Reviewed 8y: Starr Silvis, PE 1. If borrow or waste is brought in or moved off site, this office shall be notified and appropriate erosion control measures shall be taken off-site as required by The North Carolina General Statutes and The North Carolina Administrative Code 15A NCAC .048.0110, "Borrow and Waste Areas". 2. All measures shall be designed and installed in accordance with The State of North Carolina Erosion and Sediment Control Planning and Design Manual Practice Standards and Specification, 3. Rolled erosion control fabric is required on all slopes completed between the dates of October 15th and March 15th, 4. A retaining wall design certification by a licensed geotechnical engineer is required prior to the construction of the retaining walls. This certification shall be submitted to our office prior to the construction of the retaining walls. ~~ = (0 ;-0- o ~ :;= s-= == ~ > ~ ~ ~ ~ ~ !.I~ Q Q \0 el~~ !I~ "~ ~i :., ~'" " .Cj ~ ~ Q = ~ Q 11-I ~ ~ co = ~. 11-I ~~ lo1 ~. ~. = .~ ~ Z = = ~ = == Q. t'""i o ~ = ~ ... o = ~ > rJ ~ 00 I N~ Q= Q~ 'P~ Qr.IJ QQ w= ~> ~ ~ ~1 ~Q.; ~ e: ~. ~53 =. 7JJ ~. \. .1 S. ~ ~ Lj ... fb 7JJ ~ ~, Un =if =. :t. 4;;, r"=' ~ ::'i~, ~ '" ~~. = B t;t ;.::::g ~ ~ s. ;- ~='., ~;~j ~ =- .......~ ch. 0 Q rlo :- 53 ':' 0 .-< \... = _ f-: (C) o Q.; ~ rl\ :s ~ Q. - ~ ~ .... Q.. f";) ~'4 ~~ ~~~ Q~ ~z lo1~ ... =: ~ _.:-10 lo1 ~~ 7JJ -:= t""'t- ~;- ="~ ~ ~ joIo/. ~ ~ 53 ~ =- ; ~. ~ ~tIl ~ ~ (j 8 ~ (O,~ s. 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'- n ~ ~ C3 ~ ~ ~ C1 ~ ~ o ~ ~ ~ > Z > ~ ~ .~. o ~ ~ Permit Number: (to be provided by DWQ) AVA NCDE~R STORMWA TER MANAGEMENT PERMIT APPLICATION FORM 401 CERTIFICATION APPLICATION FORM BIORETENTION CELL SUPPLEMENT This form must be filled out, printed and submitted, The Required Items Checklist (Part III) must be printed, filled out and submitted along with all of the required information. Project name Contact name Phone number Date Drainage area number Site Characteristics Drainage area Impervious area Percent impervious Design rainfall depth Peak Flow Calculations Is pre/post control of the 1-yr, 24-hr peak flow required? 1-yr, 24-hr runoff depth 1-yr, 24-hr intensity Pre-development 1-yr, 24-hr peak flow Post-development 1-yr, 24-hr peak flow Pre/Post 1-yr, 24-hr peak control 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 Cell Dimensions Ponding depth of water Ponding depth of water Surface area of the top of the bioretention cell Length: Width: -or- Radius Media and Soils Summary Drawdown time, ponded volume Drawdown time, to 24 inches below surface Drawdown time, total: In-situ soil: Soil permeability Planting media soil: Soil permeability Soil composition % Sand (by weight) % Fines (by weight) % Organic (by weight) 208,216 fe 30,875 fe 14,8% % Y (Y or N) 2,82 in 0.12 in/hr 4.720 ft3/sec 5.920 fe/sec 1.200 fe Isec 3,178.0 ft3 3,317.0 fe OK o ft3 fe OK OK OK OK OK 9 hr OK OK 36 hr 0,80 in/hr OK 2.00 in/hr OK 85% OK 10% OK 5% OK 100% 18 (unitless) OK Total: Phosphorus Index (P-Index) of media Form SW401-Bioretention-Rev.7 Parts I and II. Design Summary, Page 1 of 2 Basin Elevations Temporary pool elevation Type of bioretention cell (answer "Y" to only one of the two following questions): Is this a grassed cell? Is this a cell with trees/shrubs? Planting elevation (top of the mulch or grass sod layer) Depth of mulch Bottom of the planting media soil Planting media depth Depth of washed sand below planting media soil Are underdrains being installed? How many clean out pipes are being installed? What factor of safety is used for sizing the underdrains? (See BMP Manual Section 12.3.6) Additional distance between the bottom of the planting media and the bottom of the cell to account for underdrains Bottom of the cell required SHWT elevation Distance from bottom to SHWT Planting Plan Number of tree species Number of shrub species Number of herbaceous groundcover species Additional Information Does volume in excess of the design volume bypass the bioretention cell? Does volume in excess of the design volume flow evenly distributed through a vegetated filter? What is the length of the vegetated filter? Does the design use a level spreader to evenly distribute flow? Is the BMP located at least 30 feet from surface waters (50 feet if SA waters)? Is the BMP localed at least 100 feet from water supply wells? Are the vegetated side slopes equal to or less than 3:1? Is the BMP located in a proposed drainage easement with access to a public Right of Way (ROW)? Inlet velocity (from treatment system) Is the area surrounding the cell likely to undergo development in the future? Are the slopes draining to the bioretention cell greater than 20%? Is the drainage area permanently stabilized? Pretreatment Used (Indicate Type Used with an "X" in the shaded cell) Gravel and grass (8lnches gravel followed by 3-5 ft of grass) Grassed swale Forebay Other Form SW401-Bioretention-Rev.7 Permit Number: (to be provided by DWQ) 2209.50 fmsl OK media depth OK (YorN) 5 OK 2 OK 1 ft 2202.5 fmsl 2186 fmsl 16.5 OK OK (YorN) OK OK or N) Show how flow is evenly distributed. OK orN) OK orN) OK (YorN) OK OK (Y or N) OK (Y orN) OK Y orN) OK Parts I and II. Design Summary, Page 2 of 2 AVA NCDENR Permit Number: (to be provided by DWQ) ~ WCU-Health & Gerontology Warren M. Sugg, PE 919-858-1811 January 19, 2009 3 ,j'~:r WAT~>?Oc. i!J r > - _ -i o " STORMWATER MANAGEMENT PERMIT APPLICATION FORM 401 CERTIFICATION APPLICATION FORM SAND FILTER SUPPLEMENT This form must be filled out on line, printed and submitted with all of the required information, Make sure to also fill out and submit the Required Items Checklist (Section III) and the I&M Agreement (Section IV) II. PROJECT INFORMATION Project name Contact name Phone number Date Drainage area number III. DESIGN INFORMATION Site Characteristics Drainage area (AD) Impervious area % Impervious (IA) Design rainfall depth (RD) Peak Flow Calculations 1-yr, 24-hr runoff depth 1-yr, 24-hr intensity Pre-development 1-yr, 24-hr runoff. Post-development 1-yr, 24.hr runoff PrelPost 1-yr, 24-hr peak control Storage Volume Design volume (WQV) Adjusted water quality volume \NQV Adi) Volume contained in the sedimentation basin and on top of the sand filter Maximum head on the sedimentation basin and sand filter (hMaxFitter) Average head on the sedimentation basin and sand filter (hA) Runoff Coefficient (Rv) Type of Sand Filter Open sand filter? If this is an open sand filter: The clearance between the bottom of the sand filter and the SHWT (dsHWT) Closed/pre-cast sand filter? If this is a closed sand filter: The clearance between the bottom of the sand filter and the SHWT (dsHWT) If this is a closed, underground closed sand filter: The clearance between the surface of the sand filter and the bottom of the roof of the underground structure (dspace) Form SW401-Sand Filter-Rev.4 77,667,00 tf OK 57,622,00 tf 74.2% % 1.00 in 2.82 in 0.12 in/hr 1.76 ft3/sec 4,00 ft3/sec 2.24 ft3/sec 4,645.00 ft3 3.483.75 ft3 OK 3,672.00 2.00 ft OK 1.00 ft OK 0,72 (unitless) N Y orN ft Y Y orN 5,00 ft 5.00 ft Parts I and II. Project Design Summary, Page 1 of 3 Sedimentation Basin Surface area of sedimentation basin (As) Sand Filter Surface area of sand filter (AF) Depth of the sand media filter bed (dF) Coefficient of permeability for the sand filter (k) Time to drain the sand filter (t) Time to drain the sand filter (t) Additional Information Does volume in excess of the design volume bypass the sand filter? Is an off-line flow-splitting device used? Does volume in excess of the design volume flow evenly distributed through a vegetated filter? What is the length of the vegetated filter? Does the design use a level spreader to evenly distribute flow? Is the BMP located at least 30ft from surface waters (50ft if SA waters)? If not a closed bottom, is BMP located at least 100ft from water supply wells? Are the vegetated side slopes equal to or less than 3:1 Is the BMP located in a recorded drainage easement with a recorded access easement to a public Right of Way (ROW)? What is the width of the sedimentation chamber/forebay CNSed)? What is the depth of sand over the outlet pipe? Figure 1: Open Sand Filter Sedimentation Chamber (or Fgrebay) Sand Filter Chamber A "' W ir r Flo.w tf Y orN Y orN Y orN 50.00 ft Y Y orN Y Y orN Y orN Y orN Y orN :"\ O,otl" p"i.................. ~:.'~:J J, ...............! c!sHVvr' II I ",-,,", S'illmm:::=:'~I'1 Hi" W ro.' T,bl, \VS,d Form SW401-Sand Filter-RevA Permit Number: (to be provided by DWQ) OK. Meets minimum, but may need to be increased to contain the required volume if error under Storage Volume section. Increase surface area. This will also increase the system's ability to contain the adjusted water quality volume (a requirement above), OK. Submit drainage calculations. OK OK OK OK OK OK OK OK Parts I and II. Project Design Summary, Page 2 of 3 Figure 2: Closed Sand Filter \Veir Flow Onlland Flow :;easollably High Water Table 1 L.r--J1 Sedimelltalion Chamber (FJrebav) 1 (Heavy sediments, 1 . 1 Or~cs, Debris) i i \V~:~.... Outlet Pipe .... :::;:::::::::J.~~:'~.1e ~dPipe ~ d : : F ... . .................................., ...................1 dSHWT Water Collected L.r--J Sanil Filter Chamber (Trapped Solids) Form SW401-Sand Filter-RevA Permit Number: (to be provided by DWQ; Parts 1 and II. projecl Design Summary, Page 3 of 3 AVA NCDENR Permit Number: (to be provided by DWQ) STORMWATER MANAGEMENT PERMIT APPLICATION FORM 401 CERTIFICATION APPLICATION FORM SAND FILTER SUPPLEMENT This form must be filled out on line, printed and submitted with all of the required information. Make sure to also fill out and submit the Required Items Checklist (Section III) and the I&M Agreement (Section IV) Project name Contact name Phone number Date Drainage area number Site Characteristics Drainage area (Ao) Impervious area % Impervious (IA) Design rainfall depth (Ro) Peak Flow Calculations 1-yr, 24-hr runoff depth 1-yr, 24-hr intensity Pre-development 1-yr, 24-hr runoff Post-development 1-yr, 24-hr runoff Pre/Post 1-yr, 24-hr peak control Storage Volume Design volume (WQV) Adjusted water quality volume (WQV Adi) Volume contained in the sedimentation basin and on top of the sand filter Maximum head on the sedimentation basin and sand filter (hMaxFi~er) Average head on the sedimentation basin and sand filter (hA) Runoff Coefficient (Rv) Type of Sand Filter Open sand filter? If this is an open sand filter: The clearance between the bottom of the sand filter and the SHWT (dsHwT) Closed/pre-cast sand filter? If this is a closed sand filter: The clearance between the bottom of the sand filter and the SHWT (dsHWT) If this is a closed, underground closed sand filter: The clearance between the surface of the sand filter and the bottom of the roof of the underground structure (dspace) Form SW401-Sand Filter-Rev.4 OK 74.9% % 1.00 in 1 ,973.00 fe 1,479.75 fe 1,900.00 2.00 ft 1.00 ft 0.72 (unitless) OK OK OK Y orN Y orN ft ft Parts I and II. Project Design Summary, Page 1 of 3 Sedimentation Basin Surface area of sedimentation basin (As) Sand Filter Surface area of sand filter (AF) Depth ofthe sand media filter bed (dF) Coefficient of permeability for the sand filter (k) Time to drain the sand filter (t) Time to drain the sand filter (t) Additional Information Does volume in excess of the design volume bypass the sand filter? Is an off-line flow-splitting device used? Does volume in excess of the design volume flow evenly distributed through a vegetated filter? What is the length of the vegetated filter? Does the design use a level spreader to evenly distribute flow? Is the BMP located at least 30ft from surface waters (50ft if SA waters)? If not a closed bottom, is BMP located at least 100ft from water supply wells? Are the vegetated side slopes equal to or less than 3:1 Is the BMP located in a recorded drainage easement with a recorded access easement to a public Right of Way (ROW)? What is the width ofthe sedimentation chamberfforebay (WSed)? What is the depth of sand over the outlet pipe? Figure 1: Open Sand Filter r Sedimentation Cbamber (orF1!rebay) ..... W ir r Saud Filter Clmmber ..A. Flm,v IuS,", S'illmm='~:'::1 ro,b W"" T,bl, 'VSed Form SW401-Sand Filter-Rev.4 Permit Number: (to be provided by DWQ) OK. Meets minimum, but may need to be increased to contain the required volume if error under Storage Volume section. OK. Meets minimum, but may need to be increased to contain the required volume if error under Storage Volume section. OK. Submit drainage calculations. Y or N OK Y or N OK Y or N OK 50.00 ft Y Y or N OK Y Y or N OK Y orN Y orN Y or N OK ft OK ft OK .... Outlet Pipe on ............n......... .......:::!..~~~:~:.i dF ...............1 clsH'iVT Parts I and II. Project Design Summary, Page 2 of 3 Figure 2: Closed Sand Filter Weir Flow Outlet Pipe OVeJlllUcI Flow .... :::;::::::::::r!~:.~\e ~dPipe ~ d , : F n. . .... ..............................., Seasonably High \',':,ter Tllble ~ Ly--J~ Sedimentation Chamber (Fcjrehay) ~ (He>vy sediments. ~ ~ Organics. Deb';") I I .\V~:.~...- Ly--J Sand Filter Chamber (Trapped Solids) \Vate!' C'olledecl Form SW401-Sand Filter-Rev.4 Permit Number: (to be provided by DWQ) Parts I and II. Project Design Summary, Page 3 of 3 AVA NCDENR Permit Number: (to be provided by DWQ) STORMWATER MANAGEMENT PERMIT APPLICATION FORM 401 CERTIFICATION APPLICATION FORM SAND FILTER SUPPLEMENT This form must be filled out on line, printed and submitted with all of the required information. Make sure to also fill out and submit the Required Items Checklist (Section III) and the I&M Agreement (Section IV) Contact name Phone number Date Drainage area number Site Characteristics Drainage area (Ao) Impervious area % Impervious (IA) Design rainfall depth (RD) Peak Flow Calculations 1-yr, 24-hr runoff depth 1-yr, 24-hr intensity Pre-development 1-yr, 24-hr runoff Post-development 1-yr, 24-hr runoff Pre/Post 1-yr, 24-hr peak control Storage Volume Design volume (WQV) Adjusted water quality volume (WQV Adj) Volume contained in the sedimentation basin and on top of the sand filter Maximum head on the sedimentation basin and sand filter (hMaxFilter) Average head on the sedimentation basin and sand filter (hA) Runoff Coefficient (Rv) Type of Sand Filter Open sand filter? If this is an open sand filter: The clearance between the bottom of the sand filter and the SHWT (dsHWT) Closed/pre-cast sand filter? If this is a closed sand filter: The clearance between the bottom of the sand filter and the SHWT (dsHWT) If this is a closed, underground closed sand filter: The clearance between the surface of the sand filter and the bottom of the roof of the underground structure (dspace) Form SW401-Sand Filter-Rev.4 22,900.00 tf 18,095.00 ft2 79.0% % in OK 0.70 1,452.00 ft3 1,089.00 ft3 1,280.00 2.00 ft 1.00 ft 0.76 (unitless) OK OK OK N Y or N ft Y orN ft 5.00 ft Parts I and II. Project Design Summary, Page 1 of 3 Sedimentation Basin Surface area of sedimentation basin (As) Sand Filter Surface area of sand filter (AF) Depth of the sand media filter bed (dF) Coefficient of permeability for the sand filter (k) Time to drain the sand filter (t) Time to drain the sand filter (t) Additional Information Does volume in excess of the design volume bypass the sand filter? Is an off-line flow-splitting device used? Does volume in excess of the design volume flow evenly distributed through a vegetated filter? What is the length of the vegetated filter? Does the design use a level spreader to evenly distribute flow? Is the BMP located at least 30ft from surface waters (50ft if SA waters)? If not a closed bottom, is BMP located at least 100ft from water supply wells? Are the vegetated side slopes equal to or less than 3: 1 Is the BMP located in a recorded drainage easement with a recorded access easement to a public Right of Way (ROW)? What is the width of the sedimentation chamber/forebay (W Sed)? What is the depth of sand over the outlet pipe? Figure 1: Open Sand Filter r-:-. Sedimentation Chamber (01' F1!l'ebay) -.. iVeir r SilUd Filter eh,lmbe!' .A. ",~im SOillm~',,:",~I)1 H~h W,,,, Thbl. iV Sed Form SW401-Sand Filter-Rev.4 y Y orN OK y Y orN OK Y orN OK 50,00 ft Y orN OK Y orN OK Y orN Y orN Y orN OK OK OK 320,00 ft2 Permit Number: (to be provided by DWQ) OK. Meets minimum, but may need to be increased to contain the required volume if error under Storage Volume section. OK, Meets minimum, but may need to be increased to contain the required volume if error under Storage Volume section. OK. Submit drainage calculations. ... ..................... :::!..~~~;.~.i elF ...............J ClsHWT Parts I and II. Project Design Summary, Page 2 of 3 Figure 2: Closed Sand Filter \Veil' Flow Ondlllld Flow Sea~ollably Hi~1 \V ateI' Table Water Collected ~ '-y---J~ Sedimentation Chamber (F~rebay) ~ (Heavy sediments. ~ ~ Organics. Debri>) 1............1 \VSod .... :::;:::::::::J~.~:'~1e ~dpip. ~ cl , : F ... . .................................., '-y---J Sand Filter Chamber (Trapped Solids) Form SW401-Sand Filter-Rev.4 Permit Number: (to be provided by DWQ) Parts I and II. Project Design Summary, Page 3 of 3 North Carolina Department of Administration Michael F. Easley, Governor Britt Cobb, Secretary State Construction Office Gregory Driver, P.E., Director February 12, 2009 Sara Melanson, AlA Pearce Brinkley Cease & Lee, PA 1 West Pack Square, Suite 1501 Asheville, NC 28801 Re: Floodplain Deyelopment Permit School of Health and Gerontology Western Carolina University sca 10# 06-06788-02B Dear Ms. Melanson: Attached is a copy oftha fullY'6xecuted Floodplain Development PBrmitfOl' the subject project.: Please keep this copy for your project file. Upon completion of this project, a Certificate of Compliance (http://interscope2.doa.state.nc.us/bb/sec324.htm) related to construction in a flood plain must be completed by the Designer and submitted in triplicate to this office. Very truly yours, TDL .~tb ']).) ~ Timothy D. Langford, PE Building Systems Engineyr Cc: :Susan Gentry - NC Dept. of Insurance, OSFM, State Property Plan Review Section (Ed Curtis - NC Division of Emergency Management RECeiVED FEB 1 7 2009 '\;' !:>~)(.i;\ <. {n~~i\' :~~:~:~().~.~; .\ ;; ;CpEARCE, BRINK\JiV, CEASE & LEE, P.A. j, ','L r. . J:. ~ ~ Mailillg Address: ' 1307 Mai.l Service. Center: Raleigh, N:C. 27699"1307 .; ..~ .:. Telepholle (919) 807-4100 Fax (919) 807-41 10 State Courier #56-02-0 I An Equal Opportunity/Affirmative Action Employer Locatioll: 301 N. Wilmington St., Ste. 450 Raleigh, North Carolina 27601 ; J ,. ,;, NCDEPARTMENT OF ADMINISTRATION OFFICE OF STATE CONSTRUCTION PERMIT FOR CONSTRUCTION IN A FLOODPLAIN (FLOODPLAIN DEVELOPMENT PERMIT) ~j ~ Ie" ina Universi OAT E: -.l-_~ll~Lq_~_____ (Attach Site Plan) .!~pact to Floodplain and stream resuJ. t NCDOT. is 44 linear feet of __,___,__ Building Is Elevated Building Is Wet Floodproofed Building Is Dry Floodproofed of the owner, hereby makes application fOi a area. The work to be performed is described above agrees that all sLlch work shall be done in the Uniform Floodplain Management Policy of Executive Elevation (if applicable) and a Certificate of Compliance will 7E and 7H, of Executive Order No. 123 before the facility filed in triplicate with the Departr;nent of Administration, ,) ,./~ ./ . /-' / 1'4!;( (/JU~~,,:;;t 1,1 Lief! Applicant's SfQI)i;ltLlre '('Date) -- I I) ,I .................. .L <,A l~ I - 8 JJ~_l...__ (Signature) (.l (Date) c:: '\' f1 . I I .. --, J "..... Insurance Approval L/ :t.~,,- r -.JE..,-^"~._j,, L.fk3.j- 0--( (Signst' Ire) ~. (Date) to Section 7, Executive Order No. 123, Uniform Floodplain Management Policy, a construction is hereby granted for the above subject ~roje t. 12 (/1-~ 1-3/'01 ------~~.__._---_... Britt Cobb, Sec. (Date) Department of Administration H. OONOLUSION STATEMENT X After preparationj review of this EA, the responsible state agency has concluded there is a Finding of No Significant Impad (FONS!) and will not be preparing an Environmentallmpatt 5tatement (EIS), The agency has completed this EA and is hereby submitting it for review and comment After a consideration of the comments received, the agency will proceed with a FONSI or prepar'e anEIS/2 / I / L / -?(/~ Signed Western Carolina University Agency / 14