20171369 Ver 1_Scoping Comments_20130114

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NCDENR
North Carolina Department of Environment and Natural Resources
Pat McCrory
Governor
MEMORANDUM
Division of Water Quality
Charles Wakild, P. E.
Director
Jamiary 14, 2013
TO: Natalie Locld�art, NCDOT Bridge Project Planning Engineer
John E. Skvarla, III
Secretary
FROM: Mason Hen�don, NC Divisio» of Water Qualiry, Fayetteville Regio��al Office �;'�
SUBJECT: Start of Study Review of NCDOT's Pro�osed Bridge Replacement Projects: B-4620,
B-5333, B-5695, 5334 and B-5696 in Robeson County.
In reply to your correspondence dated and received by e-mail on December 21, 2012, in which you
requested com�nents for the above referenced projects, the NC Division of Water Quality .,tfers the
following co�l�ments:
Project-Specific Comments
Bridge River Stream Stream Index 303(d)
Project No Route Stream Name Basin Classification(s) Number Listing
B-4620 121/123 SR 2455 Ashpole Swamp Lumbe�- C;Sw 14-30a Y'
B-5333 173 SR 1550 Lumber River Lumber WS N, B;Sw, HQW 14-(7) Y
B-5695 174 SR 1550 Lumber River Lumber WS IV, B;Sw, HQW 14-(7) Y
B-5334 78 SR 2220 Ten Mile Branch Lumber C;Sw 14-18-2 N
B-5696 65 NC 130 Old Field Swamp Lumber C;Sw 14-30-7-4 N
(1) r: �a _..a.._ ��4�._�.._, i r:.4�a �. r�4�._�.._, i c�.. � � i:r� �a�_�4� L:��i�.,,.:r.,....:�.. _a
�..��.,.. ..�....,. .,�.�.,�... y . �..��.,.. �.� .....�.,b... y . .... ....�.....�.., �..., �..�....,. �.�., .�..,.,.u��....,...�,.. �,..
Category 4t (impaired) water column Merciiry - standard violation. No specia] desig�l standards are
required.
B-5333, Bridge No. 173 on SR 1550 over Lumber River, Robeson County
B-5695, Bridge No. l74 on SR 1550 over Lumber River, Robeson County
Review of the project reveals the presence of surface waters classified as WS N, B;Sw, HQW ;
High Qllality Waters of the State in the project study area. This is one of the highest classifications
for water qualiry. Pursuant to I SA NCAC 2H .1006 a��d I SA NCAC 2B .0224, NC DOT will be
rec�uired to obtain a State Stormwater Permit prior to construction.
General Comments Regarding Bridge Replacement Projects
2. DWQ cani�ot co�nment on permit requiremei�ts with the ]imited information provided. Detailed
field deli��eatio�� is required to determi��e the prese��ce or absence of jm-isdictioi�al resom-ces withi��
the project limits. [» addition, NCDOT nnist provide an estimate of impacts to any resources
225 Green St., Suite 714, Fayetteville, NC 28301-5043 �rie
Phone: [phone] FAX: [phone] NorthCarolina
Internet: www.ncwaterquality.org
An Equal Opportunity 1 Affirmative Action Employer — 50% Recyded 1 10 % Post Consumer Paper ��" ���" ��

located within the construction limits of the project before we can speci�cally comment on DWQ
permit eligibility.
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.
4. 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 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.
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.
6. If foundation test borings are necessary; it shall be noted in the document. Geotechnical work is
approved under General 401 Certification Number 3883/Nationwide Permit No. 6 for Survey
Activities.
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 Certi�cation.
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 suf�cient 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. 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.
16. 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 Genera1401 Certi�cation 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 Certi�cation 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 [phone] or [e-mail].
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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