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HomeMy WebLinkAbout20140086_Scoping Comments_20111104 ��� �C���� North Carolina Department of Environment and Natural Resources Division of Water Quality Bevedy Eaves Perdue Coleen H.Sullins Dee Freeman Govemor Direc�or Secretary , � November 4, 2011 i ; MEMORANDUM TO: Mark W. Craig, PE, Division 5 Bridge Program Manager FROM: Rob Ridings,NCDWQ Transportation Permitting Unit, Raleigh�� SUBJECT: Scoping Review of NCDOT's Proposed Bridge Replacement Projects foi Wake and Franklin Counties I , In reply to your correspondence dated received October 28, 2011 in which you requested comments for � the above referenced projects, the NCDWQ offers the following comments: �, I Bridge Number Stream Name River Basin & Stream Classifications Stream Index j Subbasin Number ( 910209 UT to Little River Neuse 06 WS-V;NSW 27-57- 8.5 910420 Little Black Creek Neuse 04 C;NSW 27-45-3 910444 UT to Basal Creek Neuse 03 B;NSW 27-43-15-3 910114 New Light Creek Neuse Ol WS-N; NSW; CA 27-13-(2) � 910201 Little River Neuse 06 WS-II; HQW; NSW; CA 27-57- 7.5 � 910283 Black Creek Neuse 04 B;NSW 27-45- 1 340003 UT to Horse Creek Neuse Ol WS-N;NSW 27-17-(0.7 340098 Crooked Creek Tar-Pam O1 C;NSW; *303 d Listed* 28-30 340154 UT to Jum in Run Tar-Pam Ol C;NSW 28-28 340023 Cedar Creek Tar-Pam Ol C;NSW; *303 d Listed* 28-29- 2 340058 UT to Sandy Creek Tar-Pam 02 C;NSW; + 28-78-1-(14) 340060 UT to Sandy Creek Tar-Pam 02 C; NSW; + 28-78-1-(14) Project-Specific Comments 1. Bridees 910209, 910420, 910444, 910283, 340003, 340154: These projects impact class NSW waters of the State. NCDWQ is very concemed with sediment and erosion impacts that could result from these projects. NCDWQ recommends that highly protective sediment and erosion conffol BMPs be implemented to reduce the risk of nutrient runoff to sur£ace waters and tributaries. NCDWQ requests that road design plans provide treatment of the s[orm water runoff through best management practices as detailed in the most recent version of NCDWQ's Stormwater Best Management Practices. I 2. Brid�es 340098 and 340023: These projects impact class 303(d) Listed impaired waters of the � State.NCDWQ is very concerned with sediment and erosion impacts that could result from this , project. NCDWQ recommends that the most pro[ective sediment and erosion control BMPs be � implemented in accordance with Design Standards in Sensitive Watersheds to reduce the risk of i nutrient runoff to these streams and their tributaries.NCDWQ requests that road design plans provide treatment of the storm water runoff through best management practicesas detailed in the most recent version of NCDWQ Stormwater Best Management Practices. Transportation Permitting Unit One 1650 Mail Service Center,Raleigh,North Carolina 27699-1650 NorthCarolina Phone:919907-fi403 ' j1�f+�y IntemeChttp:llh2o,enrstate.nc.uslncwetlandsl , Q`K[K � An Equal Oppatunity 1 A�rmafive Acuan Employer . 3. Bridges 910114 and 910201: Review of the project reveals the presence of surface waters classified as Water Supply Critical Area in the project study area. Given the potential for impacts to these resources during the project implementation, the NCDWQ requests that NCDOT strictly adhere to North Carolina regulations entitled "Design Standards in Sensitive Watersheds" (15A NCAC 04B .0124) [hroughout design and construction of the projec[. This would apply for any area that drains to streams having WS CA (Wa[er Supply Critical Area)classifications. Should the bridge project be located within the Critical Area of a Water Supply NCDOT inay be required to design, construct, and maintain hazardous spill catch basins in [he project area. The number of catch basins installed shall be detertnined by.the design of the bridge, so that runoff would enter said basin(s)rather than flowing directly into the stream, and in consultation with the DWQ. 4. Bridge 910201: Review of the project reveals the presence of surface waters classified as(HQW) . High Quality Waters of the State in the project study azea. This is one of the highest classifications for water quality. Pursuant to 15A NCAC 2H .1006 and 15A NCAC 2B .0224,NCDOT will be required to obtain a State Stormwater Permit prior to construction except in North Carolina's twenty coastal counties. 5. Bridges 340058 and 340060: Review of the projects reveals the presence of surface waters classified as C;NSW;+. (The "p(us"designation refers to waters directly upstream of Outstanding Resource Waters,or ORW.) The water quality classification of ORW is one of the highest classifications in the State. NCDWQ is extremely concerned with any impacts that may occur to streams with this classification. It is preferred that these resources be avoided if at all possible. [f it is not possible to avoid these resources, the impacts shall be minimized to the greatest extent possible. Given the potential for impacts to these resources during the project implementation,the NCDWQ requests that NCDOT strictly adhere to North Carolina regulations entitled "Design Standards in Sensitive Watersheds" (I SA NCAC 04B .0124)throughout design and construction of the project. Pursuant to 15A NCAC 2H .1006 and 15A NCAC 2B .0224,NCDOT wilf be required to obtain a State Stormwater Permit prior to construction except in North Carolina's twenry coastal counties. 6. Bridges in the Neuse River Basin: Riparian buffer impacts shall be avoided and minimized to the greatest ex[ent possible pursuant to 15A NCAC 2B.0233. 7. Brid�es in the Tar-Pamlico River Basin: Riparian buffer impacts shall be avoided and minimized to the greatest extent possible pursuant to 15A NCAC 2B.0259. General Comments Regarding Bridge Replacement Projects 1. NCDWQ is very concemed with sediment and erosion impacts that could result from this project. NCDOT shall address these concerns by describing the potential impacts that may occur to the aquatic environments and any mitigating factors that would reduce the impacts. i � 2. [f foundation test borings are necessary; it shall be noted in the document. Geotechnical work is approved under General 401 Certification Number 3687/Nationwide Pertnit No. 6 for Survey Activities. 3. If a bridge is being replaced with a hydraulic conveyance other than another bridge, NCDWQ believes the use of a Nationwide Permit may be required. Please contact the US Army Corp of Engineers to determine the required permit(s). � � � � • 4. If the old bridge is removed, no dischazge of bridge material into surface waters is allowed unless otherwise authorized by the US ACOE. Strict adherence to the Corps of Engineers guidelines for bridge demolition will be a condition o£the 401 Water Quality Certification. 5. Whenever possible,NCDWQ prefers spanning structures. Spanning structures usually do not require work within the stream or grubbing of the streambanks and do not require stream channel realignment. The horizontal and vertical clearances provided by bridges shall allow for human and wildlife passage beneath the structure. Fish passage and navigation by canoeists and boaters shall not be blocked. Bridge supports(bents)should not be placed in the stream when possible. 6. Bridge deck drains shall not dischazge directly into the stream. Stormwater shall 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 the most current version of NCDWQ's Stormwater Best Management Practices. Z If concrete is used during construction, a dry work area shall be maintained to prevent direct contact between curing concrete and stream water. Water that inadveRently contacts uncured concrete shall not be discharged to surface waters due to the potential for eleva[ed pH and possible aquatic life and fish kills. 8. If temporary access roads or detours are constructed,the site shall be graded to its preconstruction contours and elevations. Disturbed areas shall be seeded or mulched to stabilize the soil and appropriate native woody species shall be planted. When using temporary structures the area shall 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 soil disturbance. 9. Sediment and erosion control measures sufficient to protect water resources must be implemented and maintained in accordance with the most recent version of North Carolina Sediment and Erosion Control Planning and Design Manual and the most recent version of NCS000250. 10. All work in or adjacent to stream waters shall be conducted in a dry work area unless otherwise approved by NCDWQ. Approved BMP measures from the most current version ofNCDOT Conshvction and Maintenance Activities manual such as sandbags, rock berms, cofferdams and other diversion structures shall be used to prevent excavation in flowing water. 11. Heavy equipment shall be operated from the bank rather than in stream channels in order to minimize sedimentation and reduce the likelihood of introducing other pollutants into streams. This equipment shall be inspected daily and maintained to prevent contamination of surface waters from leaking fuels, lubricants, hydraulic fluids, or other toxic materials. 12. In most cases, the NCDWQ prefers the replacement of the existing structure at the same location with road closure. If road closure is not feasible, a temporary detour shall be designed and located to avoid wetland impacts, minimize the need for clearing and to avoid destabilizing stream banks. If the strucmre will be on a new alignment, the old structure shall be removed and the approach fills � removed from the 100-year floodplain. Approach fi]Is shall be removed and restored to the natural � ground elevation. The area shall be stabilized with grass and planted with native tree species. Tall fescue shall not be used in riparian areas. i 13. Any anticipated dewatering or access structures necessary for construction of bridges should be addressed in the CE. It is understood that final designs are not determined at the time the CE is developed. However, the CE should discuss the potential for dewatering and access measures ❑ecessary due to bridge construction. � I � General Comments if Replacing the Bridge with a Culvert 1. Placement of culverts and other structures in waters, streams, and wetlands shall be below the elevation of the streambed by one foot for all culverts with a diameter greater than 48 inches, and 20 percent of the cubert diameter for culverts having a diameter less than 48 inches,to allow low flow passage of water and aquatic life. Design and placement of culverts and other structures including temporary erosion control measures shall not be conducted in a manner that may result in dis- equilibrium of wetlands or streambeds or banks, adjacent to or upstream and down stream of the above strucmres. The applicant is required to provide evidence that the equilibrium is being maintained if requested in writing by NCDWQ. If this condition is unable to be met due to bedrock or other limiting features encountered during construction, please wntact the NCDWQ for guidance on how to proceed and to determine whether or not a permit modification wil] be required. 2. If multiple pipes or barrels are required,they shall be designed to mimic natural stream cross section as cbsely as possible including pipes or barrels at flood plain elevation, floodplain benches and/or sills may be required where appropriate. Widening the stream channel shall 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. 3. Riprap shall not be placed in the active tha(weg channel or placed in the streambed in a manner that precludes aquatic life passage. Bioengineering boulders or structures shall be properly designed, i sized and installed. Thank you for requesting our input at this time. NCDOT is reminded that issuance of a 401 Water Quality Certification requires that appropriate measures be instituted to ensure that water qualiry standards are meGand designated uses are not degraded or lost. If you have any questions or require additional information, please contact Rob Ridings at 919-807-6403. cc: Eric Alsmeyer, US Army Corps of Engineers, Raleigh Field Office Chris Murray, Division 5 Environmental Officer Travis Wilson,NC Wildlife Resources Commission File Copy i il I i VICINITY MAP . ;<< •���aa�����R a°ef°� ,o ���,.�s�iwcr '� �1� WjA R 'R E N ; �� ' _ia^un �p � 4 NONTHCAROLINADEPARTMEhTOF ` �iSR ,ry "�i� � � i fY �f, TR4NSPORTATION � '*� � � � Lree4 � ! ��Y � x\' DIVISIONOFHIGHWAYS ord " � ,�. 15e°� B � HBItdB�SO�'. ,Em�,,� 5 8. ����� ! �i u �mnn„�u; � ` � "� r✓#'��,�-" i t ; �_, cer ' . t � .�' � i �/ . 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