HomeMy WebLinkAbout20170940 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
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