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HomeMy WebLinkAbout20130687 Ver 1_More Info Received_20130708EQUIN6X ENVIRONMENTAL CONSULTATION A OSNON L.l..s• �Lr.. /M 7.03.13 North Carolina Dept. of Environment and Natural Resources Division of Water Quality - Water Quality Section To whom it may concern: We recently submitted a 404/401 application for the Craven Street Improvements -New Belgium Brewery project and did not include a check with the application. This check is for the application. Enclosed as a reference only is the PCN for which we included 5 copies in the set we mailed out on 7.02.13 which you have either just recently received or will be receiving soon. Please call me so we know that the check and application have been received. Thank you, �i David Tuch (828) 253 -6856 ext 202 [;53 �120W12 Do JUL C G 2013 n R - W<,M QUALITY Equinox Environmental Consultation and Design. Inc. 37 Haywood Street, Suite 100, Asheville NC 28801 828.253.6856 www.equinoxenvironmental.com aot WA r�90G A? E O < Office Use Only: Corps action ID no. DWQ project no. Form Version 1.3 Dec 10 2008 Pre - Construction Notification (PCN) Form A. Applicant Information 1. Processing 1 a. Type(s) of approval sought from the Corps: ®Section 404 Permit ❑Section 10 Permit 1b. Specify Nationwide Permit (NWP) number: 27 & 39 or General Permit (GP) number: 1c. Has the NWP or GP number been verified by the Corps? ® Yes ❑ No 1d. Type(s) of approval sought from the DWQ (check all that apply): ® 401 Water Quality Certification — Regular ❑ Non -404 Jurisdictional General Permit ❑ 401 Water Quality Certification — Express ❑ Riparian Buffer Authorization le. 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 1g. 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: Craven Street Improvements - New Belgium Brewery 2b. County: Buncombe 2c. Nearest municipality / town: Asheville 2d. Subdivision name: 2e. NCDOT only, T.I.P. or state project no: 3. Owner Information 3a. Name(s) on Recorded Deed: Kimberly Beth Jordan and Christine Nicole Perich 3b. Deed Book and Page No. New Belgium Site — 5008/1972 3c. Responsible Party (for LLC if applicable): New Belgium Brewing Company Inc. & City of Asheville 3d. Street address: 500 Linden Street 3e. City, state, zip: Fort Collins, CO 80524 3f. Telephone no.: JIM 3g. Fax no.: 3h. Email address. KJordan @newbelgium.com I I JUL �3 d waW ganch 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: McCray Coates 4c. Business name (if applicable): City of Asheville 4d. Street address: Public Works Building, 161 S. Charlotte Street 4e. City, state, zip: Asheville, NC 28801 4f. Telephone no.: 828- 259 -5935 4g. Fax no.: 4h. Email address: mcoates @ashevillenc.gov 5. Agent/Consultant Information (if applicable) 5a. Name: David Tuch 5b. Business name (if applicable): Equinox Environmental Consultation and Design, Inc. 5c. Street address. 37 Haywood Street 5d. City, state, zip: Asheville, NC 28801 5e. Telephone no.: 828 - 2536856 5f. Fax no.: 5g. Email address: david @equinoxenvironmental.com a.. r� Page 2 of 12 B. Project Information and Prior Project History 1. Property Identification 1a. Property identification no. (tax PIN or parcel ID): 9638 -87 -3707 1 b. Site coordinates (in decimal degrees): Latitude: 35.587810 Longitude: - 82.572626 (DD DDDDDD) (- DD.DDDDDD) 1c. Property size: 18.99 acres 2. Surface Waters 2a. Name of nearest body of water (stream, river, etc.) to French Broad River proposed project: 2b. Water Quality Classification of nearest receiving water: B- Primary Recreation, Freshwater 2c. River basin: map is available at French Broad River hftp://h2o.enr.state.nc.us/admin/maps/ 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 site is located within Asheville City Limits adjacent to the French Broad River. Topographically, most of the site consists of a large flat, impervious area recently cleared of warehouse structures. The eastern boundary of the parcel slopes down to the French Broad River, where the riparian corridor is forested. One perennial stream bisects the center and one perennial stream intersects the southeastern comer of the property. The National Land Cover Dataset (2006) classifies the site as a mixture of low to high intensity development, deciduous forest, and developed open space. 3b. List the total estimated acreage of all existing wetlands on the property: 0.25 acres 3c. List the total estimated linear feet of all existing streams (intermittent and perennial) on the property: 789 ft. 3d. Explain the purpose of the proposed project: See Supplemental Information 3e. Describe the overall project in detail, including the type of equipment to be used: See Supplemental Information Page 3 of 12 PCN Form — Version 1.3 December 10, 2008 Version 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: A jurisdictional Stream Determination has been ® Yes ❑ No ❑ Unknown performed as well as a wetland delineation by Equinox Environmental Consultation & Design, Inc. which has been reviewed by the local US Army Corps of Engineers - Tasha McCormick 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: Equinox Environmental Name (if known): Hunter Terrell Consulation and Design, Inc. Other: 4d. If yes, list the dates of the Corps jurisdictional determinations or State determinations and attach documentation. Met with Tasha McCormick of the Corps and Tim Fox of NCDENR for a site review of the wetland delineation (May 2013) and a jurisdictional determination of the stream (Fall 2012). 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. 6. Future Project Plans 6a. Is this a phased project? ® Yes ❑ No 6b. If yes, explain. This is a joint venture project between the City of Asheville and New Belgium Brewing. As a first phase the City of Asheville will start construction on improvements to Craven Street, the greenway along the French Broad River, and the stream restoration. The stream restoration will be constructed in two phases. The first phase will include the arch culvert and the stream channel. The upland areas will be temporarily seeded until New Belgium is nearing completion with the construction of the site including parking areas, buildings and stormwater BMPs. At this time the upland areas will be planted with native bottomland hardwood forest species. The New Belgium site development will include two pedestrian bridges that completely span the stream and will have footings placed outside of the stream channel and top of bank. Page 4 of 12 C. Proposed Impacts Inventory 1. Impacts Summary la. Which sections were completed below for your project (check all that apply): ® Wetlands ® Streams - tributaries ❑ Buffers ❑ Open Waters ❑ Pond Construction 2. Wetland Impacts If there are wetland impacts proposed on the site, then complete this question for each wetland area impacted. 2a. 2b. 2c. 2d. 2e. 2f. Wetland impact Type of jurisdiction number — Type of impact Type of wetland Forested (Corps - 404, 10 Area of impact Permanent (P) or (if known) DWQ — non -404, other) (acres) Temporary T W1 ®P ❑ T Fill Bottomland ® Yes ® Corps 0.06 Hardwood Forest ❑ No E] DWQ W2 ®P ❑ T Excavation Non -Tidal ❑ Yes ® Corps 0.03 Freshwater Marsh ® No ❑ DWQ W3 ❑ P ❑ T ❑ Yes ❑ Corps ❑ No ❑ DWQ W4 []PC] T ❑ Yes ❑ Corps ❑ No ❑ DWQ W5 ❑ P ❑ T ❑ Yes ❑ Corps ❑ No ❑ DWQ W6 ❑ P ❑ T ❑ Yes ❑ Corps ❑ No ❑ DWQ 2g. Total wetland Impacts 0.09 2h. Comments: Wetland impacts will occur in both wetlands on site (see Stream and Wetland Delineation map). Wetland impacts include fill for a 10' wide greenway trail (Wetland 1) and excavation for a grade control structure (Wetland 2) as part of the stream restoration. 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) Unnamed S1 ®P ❑ T Replace Culvert Tributary to ® PER ® Corps 9.4 67.5 with Arch Culvert French Broad ❑ INT ® DWQ River Unnamed S2 ®P [IT Arch Culvert Tributary to French Broad ® PER ❑ INT ® Corps ❑ DWQ 9.4 278 River Unnamed S3 ®P ❑ T Restoration Tributary to French Broad ® PER ❑ INT ® Corps ❑ DWQ 9.4 369 River S4 ❑ P ❑ T ❑ PER ❑ Corps []INT ❑ DWQ S5 ❑ P [IT ❑ PER ❑ Corps []INT ❑ DWQ Page 5 of 12 S6 ❑ P ❑ T ❑ PER 1 ❑ Corps ❑ INT ❑ DWQ 3h. Total stream and tributary impacts 714.5 3i. Comments. Stream impacts will be limited to Stream 1 (see Stream and Wetland Delineation map). Impacts to this stream include a section where the existing round culvert will be replaced with an arch culvert, a section where an arch culvert will be constructed over the stream, and a section where the stream channel will be restored. 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 indivi ually 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 02 ❑P 03 ❑P 04 ❑P 0. Total open water impacts 4g. Comments: 5. Pond or Lake Construction If pond 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: Page 6 of 12 6. Buffer Impacts (for DWO) 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. ❑ 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 El Yes ❑ No B2 ❑P ❑T ❑Yes ❑ No B3 ❑P ❑T El Yes ❑ No 6h. Total buffer Impacts 6i. Comments: Page 7 of 12 D. Impact Justification and Mitigation 1. Avoidance and Minimization 1a. Specifically describe measures taken to avoid or minimize the proposed impacts in designing project. See Supplemental b. Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques. See Supplemental 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 ❑ ro Payment to in -lieu fee ram y p g ❑ 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: Page 8 of 12 PCN Form — Version 1.3 December 10, 2008 Version 5. Complete if Using a Permittee Responsible Mitigation Plan 5a. If using a permittee responsible mitigation plan, provide a description of the proposed mitigation plan. 6. Buffer Mitigation (State Regulated Riparian Buffer Rules) — required by DWQ 6a. Will the project result in an impact within a protected riparian buffer that requires buffer mitigation? If yes, you will have to fill out this entire form — please contact the State for more information. [:] 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 9 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? 1b. If yes, then is a diffuse flow plan included? If no, explain why. ❑ Yes E] No Comments: 2. Stormwater Management Plan 2a. What is the overall percent imperviousness of this project? -6% 2b. Does this project require a Stormwater Management Plan? ❑ Yes ® No 2c. If this project DOES NOT require a Stormwater Management Plan, explain why: The site is reducing overall impervious cover by 6 %. 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 Asheville ❑ 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? 4. DWQ Stormwater Program Review ❑ Coastal counties ❑ HQW 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 ❑ Yes ® No attached? 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 10 of 12 PCN Form — Version 1.3 December 10, 2008 Version F. Supplementary Information 1. Environmental Documentation (DWQ Requirement) 1a. Does the project involve an expenditure of public (federal /state /local) funds or the ® Yes ❑ No use of public (federal /state) land? 1 b. If you answered "yes" to the above, does the project require preparation of an environmental document pursuant to the requirements of the National or State ❑ Yes ® No (North Carolina) Environmental Policy Act (NEPA/SEPA)? 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. 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? ❑ 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? Most recent N.C. Natural Heritage Element Occurrence Database; USFWS Critical Habitat Web Portal (htta: / /criticalhabitat.fws. gov /crithab /) 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? NOAA- National Marine Fisheries Service Essential Fish Habitat Mapper V 3.0 (hq://www.habitat.noaa.gov/protection/efh/habitatmqpggr.html) 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? State Historic Preservation Office -HPO Web (http: / /gis.ncdcr.pov /hpoweb /); 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: A No -Rise Certification Report has been prepared with supporting hydraulic analysis, in accordance with NC Emergency Management National Flood Insurance Program guidelines, and has been submitted to NCDPS officials for review. 8c. What source(s) did you use to make the floodplain determination? NCDPS Floodplain Mapping Program data, and FEMA Flood Map Panels were used in assembling floodplain data for design determination. David Tuch 7.02.13 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 SUPPLEMENTAL Section 8 3d. Project Purpose (Describe the reason or purpose of the project). The purpose of the project improvements for the New Belgium Brewing: East Coast Brewery is based on a partnership with the City of Asheville and New Belgium Brewing. As part of this partnership the City of Asheville has agreed to make improvements to the site as part of an incentive package to help attract New Belgium Brewing to Asheville. In return New Belgium is developing the site which includes a beer production facility and tasting room. This project is estimated to create 154 local jobs to operate the facility. The construction of the facility is estimated to support 1,252 jobs over a seven year period, pumping an estimated $41 million into the community, as estimated by the Asheville Chamber of Commerce. The project is seen as a major economic development catalyst for the River Arts District and will have significant benefits to the overall community and the revitalization of the riverfront as part of the Wilma Dykeman RiverWay. Both the City of Asheville and New Belgium Brewing have a goal of developing the site in a sustainable manner. As such, the improvements to the site that the City of Asheville is providing include stormwater improvements and a greenway. The stormwater improvements are part of a larger project and are being considered by the City of Asheville as a regional stormwater project. There are three major aspects of this regional stormwater project: 1. Watershed Improvements- The City of Asheville is looking to improve water quality and address sedimentation issues upstream of the New Belgium property prior to water entering the New Belgium site & the French Broad River. 2. Craven Street Improvements- The City of Asheville is looking to address water quality along Craven Street (porous pavers or porous concrete and bio- retention), the stream within the New Belgium property, and a parking area which will include stormwater BMPs (Low Impact Parking Lot) 3. New Belgium Site- New Belgium Brewing is looking to implement water quality within their site including stormwater BMPs such as constructed wetlands, bio- retention areas, bio- swales, and rainwater collection. The purpose of the stream restoration is to improve the conditions of the unnamed tributary that flows through the site before emptying into the French Broad River. The stream has been manipulated overtime and is currently exhibiting low ecological value as an aquatic system. In fact, water flow is subsurface and one of the goals is to re- establish base flow where it currently does not occur. To improve the stream and not impact the existing wetland above Craven Street, a grade control structure will be constructed to maintain the original elevation of Wetland 2 (See Wetland and Stream Delineation Map) improving water quality downstream of the structure. To accommodate the programming needs of the site for New Belgium Brewing, an arch culvert to help meet the parking requirements for the site is also planned to be constructed. As well, an arch culvert is proposed for Craven Street in which an existing culvert is located. The City of Asheville will construct the arch culvert under Craven Street and New Belgium Brewing will construct the arch culvert within the site. As part of this project a greenway will also be constructed by the City of Asheville to provide a key connection to the larger greenway system in Asheville for alternative transportation, recreation, and health benefits to the community. This greenway section will provide a critical link to the progress energy corridor to the south linking to the French Broad River Park and will be part of a loop that will connect to the east side of the river and the Wilma Dykeman RiverWay. It will also include a connection to the West Asheville community. The approximate dates for construction are September 2013 - September 2014 for the improvements identified above. The greenway will rely on coordination with the Metropolitan Sewerage District (MSD) and the stream restoration is proposed to be built in phases. Phase one of the stream restoration will include the arch culvert and the stream channel including all of the in- stream structures. The areas beyond the stream channel will be temporarily seeded and used for temporary diversion ditches. When the work within the site is nearing completion the grading and final planting for the areas between the stream channel and the New Belgium site will be graded and planted with native vegetation. The site work is scheduled to be completed by December 2014. 3e. Describe the overall project in detail, including the type of equipment to be used The greenway is a 10' asphalt paved trail that will be located on an existing bench within the existing MSD sewer easement. There will be a trailhead located at the terminus of the trail at the north end of the site across from Craven Street. There are two unnamed tributaries which the greenway will cross. Stream 2, closest to Haywood Road, will be spanned with an arch culvert. Stream 1, that bisects the New Belgium site, will be crossed with a bridge and abutments outside of the top of bank will be used to support the bridge. The span of the arch culvert and the footings are more than 2 % times bank full width which on average is 9.4 feet and above the ordinary high water mark. The greenway plans provided indicate grading and structures to be constructed including crossings and retaining walls. The overall length of the greenway is 2,316 linear feet. The stream restoration includes 369 linear feet. In addition, an arch culvert will be used to span the stream for 278 linear feet, approximately 67.5 linear feet of which will be replacement of the existing culvert with a bottomless arch culvert. A grade control structure will be constructed before the stream flows under Craven Street into the arch culvert. This grade control structure will limit the impacts to the existing wetland while also allowing the necessary gradient for the stream as it flows under Craven Street. At Craven Street the existing culvert which is essentially silted in will be replaced with an arch culvert. The arch culvert will include footers and the stream channel will include a linear to keep the base flow from going subsurface. Appropriately sized rock, as well as concrete baffles to deter movement will also be placed within the channel through the section of the arch culvert. Once the stream flows through the arch culvert it will enter a restored section of stream. The stream will be designed as a threshold channel with Type B morphology and an immobile bed constructed of natural river cobble. The design includes in- stream structures to create a riffle pool system and grade control structures using natural stone boulders. A low rock wall will be constructed at the back of the floodplain bench. Above the bench the slope will be graded and when needed, retaining walls will be used to step up the slope with terraces to meet the grade of the New Belgium site. Native plants will be used to revegetate the banks and provide habitat and shade along the stream. For construction of the greenway a motor grader, mini track hoe, and bobcat will be the primary equipment used to construct the trail. The limits of disturbance will be flagged to avoid unnecessary impacts to the wetland. The stream will be constructed from the top down with the arch culvert installed first and progressing downstream. A track hoe will be used for the stream channel construction activities. Section D la. Specifically describe measures taken to avoid or minimize the proposed impacts in designing the project. The City of Asheville and New Belgium Brewing are focused on creating a model for sustainable commercial development and have taken steps to minimize and avoid impacts to jurisdictional waters. In fact, the stormwater BMPs that will be used by the City of Asheville and New Belgium Brewing show their commitment to being sensitive to the environment since many of the stormwater BMPS are not required as there not an increase in impervious cover as a result of the project. The project has been designed to avoid impacts to wetlands and streams whenever possible. The wetlands on the property are located along the floodway near Haywood Road and immediately above the site on the southwest side of Craven Street. The wetland along the floodway is located where the greenway passes. Impacts could not be avoided as the trail surface needs to be designed to accommodate a 60,000 lbs. pound Metropolitan Sewerage District (MSD) vehicle to access the line and manholes. To attempt to avoid this wetland impact and meet the design criteria for the trail would require excessive cost to build a trail that has the structural integrity to accommodate such a weight. In addition, the agreement that MSD and the City of Asheville have for allowing greenways within their MSD sewer easement states that "no structures, including footings, are allowed in MSD easement areas ". A boardwalk system to span a wetland is considered a structure by MSD. Wetland 2, located near the southwest boundary of the parcel along Craven Street, has been created due to sediment that has accumulated in the culvert passing under Craven Street. This blockage in essence is serving as a dam that backs water up above the road and has created the conditions for the wetland. Impacts to the wetland in this location are minimized by utilizing a grade control structure. If a grade control structure was not used the wetland area would need to be re- graded to connect to the stream that passes under Craven Street. If such grading were to occur it would change the hydrology and drain the wetland. The grade control structure prevents draining the wetland and allows the stream restoration on the New Belgium property to create the longitudinal grade necessary for the stream restoration. Avoidance and minimization of impacts to the unnamed tributary that flows under Craven Street through and existing culvert is a significant part of this project. A portion of this stream will be restored while another section will be spanned with a bottomless arch culvert. At the onset of the design it was thought that the entire stream would be piped. However, the design team representing both New Belgium Brewing and the City of Asheville was able to meet the design needs and program elements of the site (providing the necessary parking requirements) while also enhancing the degraded stream through restoration. As the unnamed tributary enters the site the existing culvert will be replaced with a bottomless arch culvert. The arch culvert will then be extended to span the stream and provide employee parking above the stream. Beyond this section the stream will be restored. 1b. Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques. During the construction of the greenway the limits of disturbance will be flagged by the surveyor and sediment fencing will be used to minimize impacts. The stream will include temporary diversion of stormwater off the banks of the stream during construction. As well sediment fencing will be used to minimize sediment from reaching the stream channel.