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Home My WebLink About20170436 Ver 1_Scoping Comments_20111222�� R North Carolina Department of Environment and Natural Resources Division of Water Quality Beverly Eaves Perdue Coleen H Sullins Governor Director December 22 2011 MEMORANDUM TO Dionne C Brown NCDOT Bridge Project Planning Engineer FROM Mason Herndon NCDWQ Fayetteville Regional Office W SUBJECT Scoping Review of NCDOT s Proposed Bridge Replacement Projects B 4637 and B 4814 (Sampson County) In reply to your correspondence dated December 13 2011 (received via e mail December 13 2011) in which you requested comments for the above referenced projects the NCDWQ offers the following comments Protect Specific Comments Dee Freeman Secretary 1 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 necessary due to bridge construction 2 Any anticipated impacts to waters of the state resulting from utility relocations associated with these bridge replacement projects must be noted in the project document Utility relocations are generally authorized in accordance with the conditions of General 401 Certification Number 3819/Nationwide Permit No 12 for Utility Line Activities 3 Based on lidar and topography maps expansive wetlands and floodplains exist at these bridge sites Longer bridges would open up the adjacent wetland floodplain and provide a substantial benefit to the system General Comments Regarding Bridge Replacement Projects 4 NCDWQ is very concerned 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 225 Green St Suite 714 Fayetteville NC 28301 5043 One Phone 910 -433 33001 FAX 910 -486 0707 N Internet www ncwaterguality org/�o yJrthCarolin //a y/ An Equal Opportunity 1 A rmative Ac on Employer— 90 / Recycled 1 10 Post Consumer Paper lturall Bridge River Stream Stream Index 303(d) Protect No Nos Stream Name Basin Classification(s) Number Listing B 4637 325 326 Little Coharie Creek Cape Fear C Sw 18 68 1 17 Fecal 327 (Sinclair Lake) coliform B 4814 102 103 Little Coharie Creek Cape Fear C Sw 18 68 1 17 Fecal 104 Sinclair Lake) coliform 1 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 necessary due to bridge construction 2 Any anticipated impacts to waters of the state resulting from utility relocations associated with these bridge replacement projects must be noted in the project document Utility relocations are generally authorized in accordance with the conditions of General 401 Certification Number 3819/Nationwide Permit No 12 for Utility Line Activities 3 Based on lidar and topography maps expansive wetlands and floodplains exist at these bridge sites Longer bridges would open up the adjacent wetland floodplain and provide a substantial benefit to the system General Comments Regarding Bridge Replacement Projects 4 NCDWQ is very concerned 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 225 Green St Suite 714 Fayetteville NC 28301 5043 One Phone 910 -433 33001 FAX 910 -486 0707 N Internet www ncwaterguality org/�o yJrthCarolin //a y/ An Equal Opportunity 1 A rmative Ac on Employer— 90 / Recycled 1 10 Post Consumer Paper lturall 5 If foundation test borings are necessary it shall be noted in the document Geotechnical work is approved under General 401 Certification Number 3687/Nationwide Permit No 6 for Survey Activities 6 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) 7 If the old bridge is removed no discharge 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 of the 401 Water Quality Certification 8 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 9 Bridge deck drains shall not discharge 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 10 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 inadvertently contacts uncured concrete shall not be discharged to surface waters due to the potential for elevated pH and possible aquatic life and fish kills 1 l 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 12 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 13 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 of NCDOT Construction and Maintenance Activities manual such as sandbags rock berms cofferdams and other diversion structures shall be used to prevent excavation in flowing water 14 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 15 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 structure will be on a new alignment the old structure shall be removed and the approach fills removed from the 100 year floodplain Approach fills 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 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 quality standards are met and designated uses are not degraded or lost If you have any questions or require additional information please contact me at (910) 308 4021 cc Clarence Coleman Federal Highway Administration H Allen Pope PE Division 3 Engineer ec Brad Shaver US Army Corps of Engineers Wilmington Field Office Stoney Mathis Division 3 Environmental Officer Chris Militscher Environmental Protection Agency Travis Wilson NC Wildlife Resources Commission Belinda Henson NCDWQ Fayetteville Regional Office Sonia Carrillo NCDWQ Central Office File Copy