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HomeMy WebLinkAbout20110100 Ver 1_Complete File_20050908 A-f ma pleta^ p 1 i- P 158 3 137 6 Mgrcnnnis Millpond Stravat Drgans a ? \ Stall Park 1 Co mer 313 +Winton nls +Gatesvrlle Trotviil % 37 Sa v mss 1 F % SN tl 93 461 , HooD bs ill \ 1. union Cal : e1d t / ? Elizaet ity ca E T ?'P F O R .: D r: G der \ Yo + T u A 2 ? I e°? ? ? ~ ? HaRells? Y Job- Ryland *,3 Ahosltie 17 Sel 1 J r' ` - elvidere % s a ' NOW b r h:- c b O 11 rha chapanG4'e A ROBIMANS° -. al6r nar7r ?f _ Po..ettlr,. I Tyne= ? `? 1 l G .{] IIWdn al ~ .. Nixantsn ester. '?? ?rtfor erain o 3 4 o Weeksvill, Con-aritsa I l ' CHOWAN __ Hetttov: ti ,t 6 Burcenl 1 Rockyhock V ih ll vr•60 ? Ouranis ?deck Lt* Wl tie Houm? ??_ 3e5 a a a raounGould .t, IC ?"`'-? Askewvwl2 Asr>Ibnd 7 ` 1 He"rncoc ,rc Pf, E R T [ E a I Edm?orv r 37 "' -tr .-e.d n Y see M a,.<y vEdenlDn " -' r1E ba ®rtw wi dsar I z E?enl ouse? a G 1 rl ?-%- t- --- -? L- 3-1.11 _ 11ve=s+ta C - l I .. , - j '~\ \ Ball ]%.if i _Grabtaawi 308 12 41f Weuu?mu?indila¢r \ E-REFUG dPlae? 'f M2Ck_kv5 308 ? 'y ??? Pleasant ' /? 6 -h Woodard 4 RO.tMpM v62?ir?J„?f. :j L? ro've , =_ 1 Col.,nraia ? y -- a a Site I nta t'Ie..se4?DUFEQFfFi3f5 4 V'esiRauerr, ?/? Sc+tp+ern?orr a WpcdO-y w.. ? i1 'rte - Di^err 'G?rtesswelil N. T. S. _• NORTH CAROLINA - - -? DEPARTMENT OF TRANSPORTATION PROJECT DEVELOPMENT & ENVIRONMENTAL ANALYSIS BRANCH - - - -. ?? NC 32 (YEOPIM ROAD) ° BRIDGE NO. 12 OVER QUEEN ANNE CREEK JUN p 6 '/.005 CHOWAN COUNTY DENR - WATER QUALITY Chowan County WCT' A+'" ANDSTORMWATER B NCH TIP NO. B-4463 NOT TO SCALE PROJECT VICINITY MAP FIGURE 1 A EtdTON f }? _ eD +Jr A7 _ . POP. 5.008 n ' 1 l' 1 _ e? 1206 f> 111 I\ 1242 1204 B-4463 j' • ' % , AT 1202 - 17 \ 12U "fir _ r 1286 o aMar ,., A r L s .1204- ? 1 ' ti? full ` o SAY 32 N.T.S. ,, EXISTING CONDITIONS AND PRELIMINARY STUDY ALTERNATIVES B-4463 Chowan County (Bridge No. 12 on NC 32 over Queen Anne Creek) General Notes: 1.) NC 32 is a two-lane facility and is functionally classified as a major collector. 2.) Surrounding land uses include single-family residences and trailers, small businesses, agricultural uses and undeveloped forest. 3.) Overhead power and telephone lines and underground gas line are located on the south side of the bridge/road. 4.) NC 32 is a state designated bicycle route (Bike route #3). 5.) There is no posted weight limit for the bridge. 6.) Possible historic structures located near the bridge. 7.) Posted speed limit - 55 mph. 8.) Town of Edenton is located approximately 0.5 mile east. 9.) No public involvement. No off-site detour available. Study Alternatives: 1.) In-place replacement with temporary detour to the north. 2.) In-place replacement with temporary detour to the south. BRIDGE DEMOLITION AND REMOVAL T.I.P. No. B-4463 Bridge No. 12 over Queen Anne Creek on NC 32 (Yeopim Road) Chowan County Division 1 Federal Aid Project No. BRSTP-32(4) State Project No. 8.1030501 W.B.S. No. 33713.1.1 Description: The proposed project consists of the replacement of Bridge No. 12 over Queen Anne Creek on NC 32 (Yeopim Road) in Chowan County. The bridge was constructed in 1922 and its present condition is rated as fair. The bridge has a sufficiency rating of 40.2 out of a possible 100. Bridge No. 12 does not have a posted SV/TTST weight limit. The superstructure for Bridge No. 12 consists of a reinforced concrete deck girder (T- beam) with I-beams. The substructure consists of reinforced concrete abutments and bents on solid concrete piers, widened with timber piles. The bridge has 2 spans and totals approximately 47 feet in length. There is the potential for the concrete deck and the interior bents to be dropped into Waters of the United States during demolition and removal. The maximum resulting temporary fill associated with the removal of the bridge is approximately 87.7 cubic yards. Calculations: Superstructure: (Length over water - 45 feet) Deck: 26.0'x45'x0.50'=585.0ft3=21.7cy Curb: 2 x (45' x 0.50' x 1.5') = 67.5ft3 = 2.5 cy Substructure: (Concrete caps, piers and girders) Bents: Interior: 26.75'x 2' x 2' = 107.0 ft3 = 4.0 cy End Bent # 1: 3 6.2' x 2' x 2' = 144.8 ft3 = 5.4 cy End Bent #2: 35.7' x 2' x 2' = 142.8 ft3 = 5.3 cy Piers: 3 x (18.0'x 2' x 10') = 1080.0 ft3 = 40.0 cy Girders: 2 x (45' x 1.33' x 1.25') =149.6 ft3 = 5.5 cy : 2 x (45' x 0.79' x 1.25') = 88.9 ft3 =3.3cy Moratorium: In-stream construction activities will be scheduled to avoid and minimize impacts to aquatic resources/organisms. Specific moratorium dates will be determined by the North Carolina Wildlife Resources Commission. Section 7 Consultation: None anticipated. Prepared By: James R. Smith, CEP DRMP 05/25/05 ,0. ' QG r 7 L=1 D 'C September 8, 2005 MEMORANDUM TO: Stacy Baldwin, NCDOT Consultant Engineering Unit Head FROM: Nicole Thomson, NC Division of Water Quality, Transportation Permitting U (t' SUBJECT: Scoping Review of NCDOT's proposed bridge replacement projects: B-4435, B-4463, B- 4465, B-4551, B-4576 and B-4647 In reply to your correspondence dated may 25, 2005 (received June 6, 2005) in which you requested. comments for the referenced projects, the NC Division of Water Quality has the following comments: L Proieet-Specific Comments B-4435 Bridge No. 44.over Roquist Creek, Bertie Co. Roquist Creek are class C; Sw waters of the State. DWQ has no specific comments regarding this project. B-4463 Bridge No. 12 over Oueen Anne Creek. Chowan Co. Queen Anne Creek are class C; NSW waters of the State. DWQ is very concerned with sedimentation and erosion impacts that could result from this project. DWQ recommends that highly protective sedimentation and erosion control BMPs be implemented to reduce the risk of nutrient runoff to Queen Anne Creek. DWQ requests that road design plans provide treatment of the storm water runoff through best management practices as detailed in Best Management Practices for the Protection of Surface Waters. Refer to 15A NCAC 2B .0224(2) and 15A NCAC 2H. 1006. B-4465 Bridge No. 5 over Pollock Swamp, Chowan Co. Pollock Swamp are class C; NSW waters of the State.. DWQ is very concerned with sedimentation and erosion impacts that could result from this project. DWQ recommends that highly protective sedimentation and erosion control BMPs be implemented to reduce the risk of nutrient runoff to Pollock Swamp. DWQ requests that road design plans provide treatment of the storm water runoff through best management practices as detailed in Best Management Practices for the Protection of Surface Waters. Refer to 15A NCAC 2B .0224(2) and 15A NCAC 2H. 1006. B-4551 Bridge No. 45 over Outfall Canal, Hyde Co. Outfall Canal are class SC waters of the State. DWQ has no specific comments regarding this project. B-4576 Bridge No. 6 over Ready Branch, Martin Co. Ready Branch are class C waters of the State. DWQ has no specific comments regarding this project. C ?ne?ffiCarohna Transportation Permitting Unit ? u?7lrQ??? 1650 Mail Service Center, Raleigh, North Carolina 27699-1650 2321 Crabtree Boulevard, Suite 250, Raleigh, North Carolina 27604 Phone: 919-733-1786 / FAX 919-733.6893 / Internet: http://h2o.enr.state.nc.us/ncwetlands North Carolina Department of Environment and Natural Resources Alan W. Klimek, P.E. Director Division of Water Quality An Equal Opportunity/Affirmative Action Employer- 509/6 Recycled/100/6 Post Consumer Paper B-4647 Bridge No. 6 over Northwest Fork Allikator River, Tyrell Co. Northwest Fork Alligator River are class C; SW; ORW waters of the State. The waters in the project area are Outstanding Resource Waters of the State. DWQ is extremely concerned with sedimentation/erosion impacts that could result from this project. Sedimentation and erosion control measures should be implemented as described in 15A.NCAC 4B .0124 Design Standards in Sensitive Watersheds. Additionally, hazardous spill catchment basins will be required for all crossings of any Outstanding Resource Waters of the State. The environmental document associated with this project should address these concerns by describing the potential impacts that may occur to the aquatic environments and any mitigating factors that would reduce the impacts.. DWQ requests that alternatives developed for the proposed environmental document consider design criteria that reduce the impacts to streams and wetlands from storm water runoff. These alternatives should include road designs that allow for treatment of the storm water runoff through best management practices as detailed in Best Management Practices for the Protection of Surface Waters. In accordance with 15A NCAC 2H .1005, developments in coastal counties that require a sedimentation/erosion control plan must have a storm water permit. Prior to land disturbing activities, a storm water permit must be obtained for the above referenced project. H. General Comments Reyardinr Brid-ve Replacement Protects 1. If corrugated metal pipe arches, reinforced concrete pipes, or concrete box culverts are used to replace the bridge, then DWQ recommends the use of Nationwide Permit No. 14 rather than Nationwide Permit 23. 2. If the old bridge is removed, no discharge of bridge material into surface waters is preferred. Strict adherence the Corps of Engineers guidelines for bridge demolition will be a condition. of the 401 Water Quality Certification. 3. DWQ prefers spanning structures. Spanning structures usually do not require work within the stream and do not require stream channel realignment. The horizontal and vertical clearances provided by bridges allows for human and wildlife passage beneath the structure, does not block fish passage, and does not block navigation by canoeists and boaters. 4. Bridge deck drains should not discharge directly into the stream, stormwater should be directed across the bridge and pre-treated through site-appropriate means (grassed swales, pre-formed scour holes, vegetated buffers, etc.) before entering the stream. Please refer to NCDOT Best'Management Practices for the Protection of Surface Waters 5. Live concrete should not be allowed to contact the water in or entering into the stream Concrete is mostly made up of lime (calcium carbonate) and when in a dry or wet state (not hardened) calcium carbonate is very soluble in water and has a pH of approximately 12. In an unhardened state concrete or cement will change the pH of fresh water to very basic and will cause fish and other macroinvertebrate kills. 6. If possible, bridge supports (bents) should not be placed in the stream. 7. If temporary access roads or detours are constructed, they should be removed back to original ground elevations immediately upon the completion of the project. Disturbed areas should be seeded or mulched to stabilize the soil and native tree species should be. planted with a spacing of,not more than .10'x10'. If possible, when using temporary structures the area should be cleared but not grubbed. Clearing the area with chain saws, mowers, bush-hogs, or other mechanized equipment and leaving the stumps and root mat intact, allows the area to re-vegetate naturally and minimizes disturbed soil. 8. A clear bank (rip rap-free) area of at least 10 feet should remain on each side of the stream underneath the bridge. 9. Sedimentation and erosion control measures sufficient to protect water resources must be implemented prior to any ground disturbing activities. Structures should be maintained regularly, especially following rainfall events. 10. Bare soil should be stabilized through vegetation or other means as quickly as feasible to prevent sedimentation of water resources. 11. All work in or adjacent to stream waters should be,conducted in a dry work area. Sandbags, rock berms, cofferdams, or other diversion structures should be used where possible to prevent excavation in flowing water. 12. Heavy equipment should be operated from the bank rather than in stream channels in order to minini?e sedimentation and reduce the likelihood of introducing other pollutants into streams. This equipment should be inspected daily and maintained to prevent contamination of surface waters from leaking fuels, lubricants, hydraulic fluids, or other toxic materials. III General Comments if Replacinz the Bridke with a Culvert 1. The culvert must be designed to allow for aquatic life and fish passage. Generally, the culvert or pipe invert should be buried at least 1 foot below the natural streambed (measured from the natural thalweg depth). If multiple barrels are required, barrels other than the base flow barrel(s) should be placed on or near stream bankfull or floodplain bench elevation (similar to Lyonsfield design). These should be reconnected to floodplain benches as appropriate. This may be accomplished by utilizing sills on the upstream end to restrict or divert flow to the base flow barrel(s). Sufficient water depth should be provided in the base flow barrel during low flows to accommodate fish movement. If culverts are longer than 40-50 linear feet, alternating or notched baffles should be installed in a manner that mimics existing stream pattern. This should enhance aquatic life passage: 1) by depositing sediments in the barrel, 2) by maintaining channel depth and flow regimes, and 3) by providing resting places for fish and other aquatic organisms. In essence, the base flow barrel(s) should provide a continuum of water depth and channel width without substantial modifications of velocity. 2. If multiple pipes or cells are used, at least one pipe or box should be designed to remain dry during normal flows to allow for wildlife passage. 3. Culverts or pipes should be situated along the existing channel alignment whenever possible to avoid channel realignment. Widening the stream channel should be avoided. Stream channel widening at the inlet or outlet end of structures typically decreases water velocity causing sediment deposition that requires increased maintenance and disrupts aquatic life passage. 4. Riprap should not be placed in the active thalweg channel or placed in the streambed in a manner that precludes aquatic life passage. Bioengineering boulders or structures should be professionally designed, sized, and installed. In most cases, we prefer the replacement of the existing structure at the same location with road closure. If road closure is not feasible, a temporary detour should be designed and located to avoid wetland impacts, minimize the need for clearing and to avoid destabilizing stream banks. If the structure will be on a new alignment, the old structure should be removed and the approach fills removed from the 100- year floodplain. Approach fills should be removed down to the natural ground elevation. The area should be stabilized with grass and planted with native tree species. Tall fescue should not be used in riparian areas. If the area that is reclaimed was previously wetlands, NCDOT should restore the area to wetlands. If successful, the site may be used as wetland mitigation for the subject project or other projects in the watershed. Thank you for requesting our input at this time. The DOT is reminded that issuance of a 401 Water Quality Certification requires that appropriate measures be instituted to ensure that water quality standards are met and designated uses are not degraded or lost. If you have any questions or require additional information, please contact Nicole Thomson 919-715-3415. pc: Bill Biddlecome, USACE Washington Field Office Chris Militscher, USEPA Travis Wilson, NCWRC Gary Jordan, USFWS Garcy Ward, NCDWQ Washington Regional Office Central Files File Copy q, F ` O 4,yv6rF?W M l7 2005 STATE OF NORTH CAROLINA DEPART ENT OF TRANSPORTATION bR? ORS OFFICE MICHAEL F. EASLEY LYNDO TIPPETT GOVERNOR 0 /u I? ?? ?? S SECRETARY May 25, 2005 v J MEMORANDUM TO: Alan W. Klimek, PE DWQ-DENR 1617 Mail Service Center Raleigh, NC 27699-1617 Q?nt erector r ' FROM:egory J. Thorpe, Ph.D., Environmental Manageme P "Project Development and Environmental Analysis Branch } SUBJECT: Request for Environmental Input NCDOT Bridge Replacement Group #54 The Project Development and Environmental Analysis Branch (PDEA) of the North Carolina Department of Transportation (NCDOT), has begun studying alternatives for the proposed replacement of the bridges listed below. The projects are. included in the 2004 - 2010 North Carolina Transportation Improvement Program (TIP). Site location maps and other project information are attached for your review. TIP No. W.B.S. No. NCDOT County Project Description Division B-4435 33701.1.1 1 Bertie Replace Bridge No. 44 over Roquist Creek on SR 1100 (Grabtown Road) near the Town of Windsor B-4463 33713.1.1 1 Chowan Replace Bridge No. 12 over Queen Anne Creek on NC 32 (Yeo im Road) near the Town of Edenton B-4465 33714.1.1 1 Chowan Replace Bridge No. 5 over Pollock Swamp on SR 1208 (Wildcat Road) near the Town of Edenton B-4551 33764.1.1 1 Hyde Replace Bridge No. 45 over a Canal on US 264 in New Holland B-4576 33780.1.1 1 Martin Replace Bridge No. 6 over Ready Branch on US 17 south of Williamston B-4647 33813.1.1 1 Tyrrell Replace Bridge No. 6 over Northwest Fork Alligator River on NC 94 near Gum Neck The purpose of this letter is to solicit your input concerning the potential impact of the proposed projects upon social, economic, demographic, land use, and/or environmental conditions near the projects. If applicable, please identify any permits or approvals that may be required by your agency. Your comments will be used in the preparation of a federally funded Categorical Exclusion (CE) document for the projects. Please note that there will be no formal interagency scoping meetings for the projects. This letter constitutes solicitation for scoping comments related to the projects. To allow us to fully evaluate the impacts of the proposed projects, please respond in writing by July 1, 2005, concerning any beneficial or adverse impacts of the proposed projects relating to the interest of your agency. If you have any questions concerning the projects, please contact Ms. Stacy Baldwin, PE of this Branch at (919) 733-7844, Extension 264. MAILING ADDRESS: NC DEPARTMENT OF TRANSPORTATION PROJECT DEVELOPMENT AND ENVIRONMENTAL ANALYSIS 1548 MAIL SERVICE CENTER TELEPHONE: 919-733-3141 FAX: 919-733-9794 WEBSITE: WWW.NCDOT.ORG LOCATION: TRANSPORTATION BUILDING 1 SOUTH WILMINGTON STREET RALEIGH NC United States Department of the Interior FISH AND WILDLIFE SERVICE Raleigh Field Office Post Office Box 33726 Raleigh, North Carolina 27636-3726 June 10, 2005 Gregory J. Thorpe, Ph.D. North Carolina Department of Transportation Project Development and Environmental Analysis 1548 Mail Service Center Raleigh, North Carolina 27699-1548 Dear Dr. Thorpe: This letter is in response to your request for comments from the U.S. Fish and Wildlife Service (Service) on the potential environmental effects of the following proposed bridge replacement projects: • B-4435, Bertie County, SR 1100 crossing of Roquist Creek • B-4463, Chowan County, NC 32 crossing of Queen Anne Creek • B-4465, Chowan County, SR 1208 crossing of Pollock Swamp • B-4551, Hyde County, US 264 crossing of a canal • B-4576, Martin County, US 17 crossing of Ready Branch • B-4647, Tyrrell County, NC 94 crossing of Northwest Fork Alligator River These comments provide scoping information in accordance with provisions of the Fish and Wildlife Coordination Act (16 U.S.C. 661-667d) and section 7 of the Endangered Species Act (ESA) of 1973, as amended (16 U.S.C. 1531-1543). For bridge replacement projects, the Service recommends the following general; conservation measures to avoid or minimize environmental impacts to fish and wildlife resources: 1. Wetland, forest and designated riparian buffer impacts should be avoided and minimized to the maximum extent practical; 2. If unavoidable wetland or stream impacts are proposed, a plan for compensatory mitigation to offset unavoidable impacts should be provided early in the planning process. Opportunities to protect mitigation areas in perpetuity via conservation easements, land trusts or by other means should be explored at the outset; 3. Off-site detours should be used rather than construction of temporary, on-site bridges. For projects requiring an on-site detour in wetlands or open water, such detours should be aligned along the side of the existing structure which has the least and/or least quality of fish and wildlife habitat. At the completion of construction; the detour area should be entirely removed and the impacted areas be planted with appropriate vegetation, including trees if necessary; 4. Wherever appropriate, construction in sensitive areas should occur outside fish spawning and migratory bird nesting seasons. In waterways that may serve as travel corridors for fish, in-water work should be avoided during moratorium periods associated with migration, spawning and sensitive pre-adult life stages. The general moratorium period for anadromous fish is February 15 - June 30; 5. New bridges should be long enough to allow for sufficient wildlife passage along stream corridors; 6. Best Management Practices (BMP) for Protection of Surface Waters should be implemented; 7. Bridge designs should include provisions for roadbed and deck drainage to flow through a vegetated buffer prior to reaching the affected stream. This buffer should be large enough to alleviate any potential effects from run-off of storm water and pollutants; 8. The bridge designs should not alter the natural stream and stream-bank morphology or impede fish passage. To the extent possible, piers and bents should be placed outside the bank-full width of the stream; 9. Bridges and approaches should be designed to avoid any fill that will result in damming or constriction of the channel or flood plain. If spanning the flood plain is not feasible, culverts should be installed in the flood plain portion of the approach to restore some of the hydrological functions of the flood plain and reduce high velocities of flood waters within the affected area. Section 7(a)(2) of the Endangered Species Act requires that all federal action agencies (or their designated non-federal representatives), in consultation with the Service, insure that any action federally authorized, funded, or carried out by such agencies is not likely to jeopardize the continued existence of any federally-listed threatened or endangered species. A biological assessment/evaluation may be prepared to fulfill the section 7(a)(2) requirement and will expedite the consultation process. To assist you, a county- by-county list of federally protected species known to occur in North Carolina and information on their life histories and habitats can be found on our web page at http://nc-es.fws.gov/es/couniyfr.html . The North Carolina Natural Heritage Program (NCNHP) database does not indicate any known occurrences of listed species near the project vicinities, except for B-4551. There is a historical record near the project site for sensitive jointvetch (Aeschynomene virginica). If habitat for sensitive jointvetch exists at or near the project area, a survey should be conducted during the species flowering season (mid July - October). For other species and for the other project sites, the NCNHP data should not be substituted for actual field surveys if suitable habitat occurs near a project site. The NCNHP database only indicates the presence of known occurrences of listed species and does not necessarily mean that such species are not present. It may simply mean that the area has not been surveyed. If suitable habitat occurs within the project vicinity for any listed species, surveys should be conducted to determine presence or absence of the species. If you determine that the proposed actions may affect (i.e., likely to adversely affect or not likely to adversely affect) a listed species, you should notify this office with your determination, the results of your surveys, survey methodologies, and an analysis of the effects of the actions on listed species, including consideration of direct, indirect, and cumulative effects, before conducting any activities that might affect the species. If you determine that the proposed actions will have no effect (i.e., no beneficial or adverse, direct or indirect effect) on listed species, then you are not required to contact our office for concurrence. We reserve the right to review any federal permits that may be required for these projects, at the public notice stage. Therefore, it is important that resource agency coordination occur early in the planning process in order to resolve any conflicts that may arise and minimize delays in project implementation. In addition to the above guidance, we recommend that the environmental documentation for these projects include the following in sufficient detail to facilitate a thorough review of the action: 1. A clearly defined and detailed purpose and need for the proposed project; 2. A description of the proposed action with an analysis of all alternatives being considered, including the "no action" alternative; 3. A description of the fish and wildlife resources, and their habitats, within the project impact area that may be directly or indirectly affected; 4. The extent and acreage of waters of the U.S., including wetlands, that are to be impacted by filling, dredging, clearing, ditching, or draining. Acres of wetland impact should be differentiated by habitat type based on the wetland classification scheme of the National Wetlands Inventory (NWI). Wetland boundaries should be determined by using the 1987 Corns of Engineers Wetlands Delineation Manual and verified by the U.S. Army Corps of Engineers; 5. The anticipated environmental impacts, both temporary and permanent, that would be likely to occur as a direct result of the proposed project. The assessment should also include the extent to which the proposed project would result in secondary impacts to natural .resources, and how this and similar projects contribute to cumulative adverse effects; 6. Design features and construction techniques which would be employed to avoid or minimize impacts to fish and wildlife resources, both direct and indirect, and including fragmentation and direct loss of habitat; 7. If unavoidable wetland or stream impacts are proposed, project planning should include a compensatory mitigation plan for offsetting the unavoidable impacts. The Service appreciates the opportunity to comment on these projects. Please continue to advise us during the progression of the planning process, including your official determination of the impacts of these projects. If you have any questions regarding our response, please contact Mr. Gary Jordan at (919) 856-4520, ext. 32. 'nce , Pete njamin Ecological Services Supervisor gill Qijklfca-t cc:, USACE, Washington, NC Nicole Thomson, NCDWQ, Raleigh, NC Travis Wilson, NCWRC, Creedmoor, NC Chris Militscher, USEPA, Raleigh, NC