HomeMy WebLinkAbout20160628 Ver 1_Information Letter_20120201e�n copv
Q A
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Charles Wakild P E
Governor Director
February 1 2012
MEMORANDUM
TO James F Bridges P E Bridge Project Planning Engineer NCDOT
FROM Michael R Parker NCDWQ Asheville Regional Office
SUBJECT Bridge Scopmg Review Comments
B 5398 Bridge No 21 NCSR 1803 Burke County
B 5397 Bridge No 51 NCSR 2213 Rutherford County
B 4823 Bridge No 12 NCSR 1538 Transylvania County
In reply to your letters dated December 22 2012 in which you requested comments for the above
referenced project the NCDWQ offers the following
Protect Specific Comments
B 5398, Bridge No 21 over Henry Fork, Burke County
1 Henry Fork is class C waters of the State
2 There are two unnamed tributaries to Henry Fork on the north side of the study area where NCDWQ
will claim Jurisdiction
3 NCDWQ has no specific comments for this bridge project
B 5397, Bridge No 51 over Floyds Creek, Rutherford County
Floyds Creek is class C waters
There is a small unnamed tributary to Floyds Creek that starts south of NCSR 2295 and flows under
NCSR 2295 to Floyds Creek Also there are adjacent wetlands between NCSR 2295 and Floyds
Creek A small pocket of wetlands also exist on the south side of NCSR 2295 along the unnamed
tributary
NCDWQ has no specific comments for this bridge project
B 4823, Bridge 12 over Hogsed, Transylvania County
1 Hogsed Creek is class C trout waters NCDWQ recommends that the most protective sediment and
erosion control BMP s be implemented to reduce the risk of turbidity violations in trout waters In
addition all disturbances within trout buffers shall be conducted in accordance with the NC Division
of Land Resources and NC Wildlife Resources Commission
Dee Freeman
Secretary
SURFACE WATER PROTECTION SECTION Asheville Regional Office One
2090 U S Highway i0 Swannanoa North Carolina 28778 8211 NorthCarohna
Phone 828 296 -4500 i FAX 828 299 7043 J
Internet www ncwaterquality org �% �t�r�ll
An Equal Opportunity Atfirmative Action Employer
s
V
2 Should NC Wildlife Resources Commission (NCWRC) identify these waters as naturally reproducing
trout waters NCDOT will be required to observe the NCWRC — recommended moratoria for trout In
additions NCDWQ will require that NCDOT strictly adhere to North Carolina regulations entitled
Design Standards in Sensitive Watersheds [15A NCAC 04B 0124] throughout design and
construction of the project
General Comments Regarding Bridge Replacement Projects
1 NCDWQ is very concerned with sediment and erosion impacts that could result from these projects
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
2 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
Low Impact Bridge Projects must fall under Nationwide Permit No 3 to qualify for Low Impact
otherwise standard permitting procedures will be required Example (Regional General Permit No
31 Nationwide Permit No 23 Nationwide Permit No 13 etc )
4 Whenever possible NCDWQ 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 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
5 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
6 Strict adherence to the most recent version of NCDOT s Best Management Practices For Bridge
Demolition and Removal approved by the US Army Corps of Engineers is a condition of the 401 Water
Quality Certification
7 Bridge piles and bents shall be constructed using driven piles (hammer or vibratory) or drilled shaft
construction methods More specifically betting or other methods of pile driving are prohibited without
prior written approval from NCDWQ first
8 No drill slurry or water that has been in contact with uncured concrete shall be allowed to enter surface
waters This water shall be captured treated and disposed of properly
9 All pile driving or drilling activities shall be enclosed in turbidity curtains unless otherwise approved by
NCDWQ in this certification
10 All bridge construction shall be performed from the existing bridge temporary work bridges
temporary causeways or floating or sunken barges If work conditions require barges they shall be
floated into position and then sunk The barges shall not be sunk and then dragged into position Under
no circumstances should barges be dragged along the bottom of the surface water
(2)
A
!,
11 All work in or adjacent to stream waters shall be conducted in a dry work area 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
12 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
13 Heavy equipment shall be operated from the banks rather than in the stream channel in order to
minimize sedimentation and reduce the introduction of other pollutants into the stream This equipment
shall be inspected daily and maintained to prevent contamination of surface waters from leaking fuels
lubricants hydraulic fluids or other toxic materials
14 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
15 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
16 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 the opportunity to provide comments 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 Mike Parker at 828 296 4500
cc Lori Beckwith USACE Asheville Field Office
Garry Moore NCDOT Division 13 Bridge Manager
Roger Bryan NCDOT Division 13 Environmental Officer
Josh Deyton NCDOT Division 14 Bridge Manager
Mark Davis NCDOT Division 14 Environmental Officer
Marla Chambers NCWRC
Transportation Permitting Unit
NCDOT Bridge Scopmg Burke Rutherford Transylvania
(3 )