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Home My WebLink About20170940 Ver 0_Scoping Comments_20130108AA a NC®ENR North Carolina Department of Environment and Natural Resources Division of Water Quality Pat McCrory Charles Waklld, P E John E Skvada, III Governor Director Secretary January 8, 2013 MEMORANDUM TO Natalie Lockhart, NCDOT Bridge Project Planning Engineer FROM Mason Herndon, NC Division of Water Quality, Fayetteville Regional Office ?W SUBJECT Start of Study Review of NCDOT's Proposed Bridge Replacement Projects B -4544 and B -5704 in Harnett County In reply to your correspondence dated and received by e-mail on December 20, 2012, in which you requested comments for the above referenced projects, the NC Division of Water Quality offers the following comments Project - Specific Comments I') Listed as Category 1 for aquatic life — moderate bioc lass ification, no special conditions are required I 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 2 Preliminary review suggests the presence of substantial wetlands and Jurisdictional resources within the study area, therefore offsite detours are strongly recommended 3 DWQ cannot comment on permit requirements with the limited information provided Detailed field delineation is required to determine the presence or absence of Jurisdictional resources within the project limits In addition, NCDOT must provide an estimate of impacts to any resources located within the construction limits of the project before we can specifically comment on DWQ permit eligibility General Comments Regarding Bridge Replacement Projects 4 DWQ is very concerned with sediment and erosion impacts that could result from this project NC DOT 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 NorthCarollna Internet www ncwater uali or 'ry/ An Equal Opportunity 1 Affirmative Action Employer — 50% Recycled 110% Post Consumer Paper ��r��v Bridge River Basin Stream Stream Index 303(d) Project No Route Stream Name Classification(s) Number Listing B -4544 133/134 SR 1722 Black River & overflow Cape Fear C,Sw 18- 68 -12 -1 B -5704 246 SR 1718 Black River I Cape Fear 1 C,Sw 18- 68 -12 -1 Y I') Listed as Category 1 for aquatic life — moderate bioc lass ification, no special conditions are required I 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 2 Preliminary review suggests the presence of substantial wetlands and Jurisdictional resources within the study area, therefore offsite detours are strongly recommended 3 DWQ cannot comment on permit requirements with the limited information provided Detailed field delineation is required to determine the presence or absence of Jurisdictional resources within the project limits In addition, NCDOT must provide an estimate of impacts to any resources located within the construction limits of the project before we can specifically comment on DWQ permit eligibility General Comments Regarding Bridge Replacement Projects 4 DWQ is very concerned with sediment and erosion impacts that could result from this project NC DOT 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 NorthCarollna Internet www ncwater uali or 'ry/ An Equal Opportunity 1 Affirmative Action Employer — 50% Recycled 110% Post Consumer Paper ��r��v If foundation test borings are necessary, it shall be noted in the document Geotechmcal work is approved under General 401 Certification Number 3883/Nationwide Permit No 6 for Survey Activities 6 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 Whenever possible, the DWQ prefers spanning structures Spanning structures usually do not require work within the stream or grubbing of the stream banks and do not require stream channel realignment The horizontal and vertical clearances provided by bridges allow for human and wildlife passage beneath the structure, do not block fish passage and do not block navigation by canoeists and boaters 8 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 NC DWQ Stormwater Best Management Practices 9 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 10 Bridge supports (bents) shall not be placed in the stream when possible 11 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 NC DWQ 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 DWQ 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 floodplam 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 16 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 17 Any 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 3884/Nationwide Permit No 12 for Utility Line Activities 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 me at (910) 308 -4021 or mason herndon @ncdenr gov ec Ronnie Smith, US Army Corps of Engineers, Wilmington Field Office Jim Rerko, Division 6 Environmental Officer Chris Militscher, Environmental Protection Agency Gary Jordan, US Fish and Wildlife Service Travis Wilson, NC Wildlife Resources Commission Belinda Henson, NCDWQ, Fayetteville Regional Office Sonia Carrillo, NCDWQ Central Office File Copy