20070093 Ver 1_Approval Letter_20070817

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Coleen H. Sullins, Director
Division of Water Quality
August 17, 2007
Watauga County
DWQ Project No. 07-0093 re-issuance
SR 1129 (Laurel Creek Rd)
APPROVAL of 401 Water Quality Certification
Mr. Mike Pettyjohn, P.E.
Division Engineer, Division 11
N C Department of Transportation
Post Office Box 250
T;orth Wilkesboro, North Carolina 286.59
l_)ear Mr. Pettyjohn:
You have our approval, in accordance with the attached conditions and those listed below, to incur the following impacts in order to
improve, widen and pave SR 1129 (Laurel Creek Rd) in Watauga County.
• 2001inear feet of new impacts to seven different unnamed tributaries to Laurel Creek (130 feet of piping impacts, 70 feet of
riprap);
• a total of 0.033 acres of temporary impacts from dewatering at all pipe replacement locations.
The project shall be constructed in accordance with your application dated January 10, 2007. After reviewing your application, we
have decided that this fill is covered by General Water Quality Certification Nos. 3627 and 3634, corresponding to the U.S. Army
Corps of Engineers Nationwide Permit Numbers 14 and 33 respectively. In -addition, you should acquire any other federal, state or
local permits before you proceed with your project including (but not limited to) Sediment and Erosion Control, Non-Discharge and
Water Supply Watershed regulations. This approval will expire with the accompanying 404 federal permit. This condition
supercedes, condition No. 19 in the General Certification 3627 and condition No. 12 in the General Certification 3634.
This approval is valid solely for the purpose and design described in your application (unless modified below). Should your project
change, you must notify the Division of Water Quality (Division) and submit a new application. If the property is sold, the new owner
must be given a copy of this approval letter and certifications, and is thereby responsible for complying with all the conditions. If total
wetland fills for this project (now or in the future) exceed one acre, or if total impacts to streams (now or in the future) exceed 150
linear feet, compensatory mitigation maybe required as described in 15A NCAC 2H .0506 (h) (6) and (7). For this approval to remain
valid, you must adhere to the conditions listed in the attached certification and any additional conditions listed below.
Instream work and land disturbance within the 25-foot wide buffer zone are prohibited during the trout spawning seasons of
October 15 through April 15 to protect the egg and fry stages of trout.
At various locations along this road widening, the stream channel is parallel, and immediately adjacent to, the road fill slope
and construction area. Extra care will be necessary in designing, installing, and maintaining proper erosion control measures
to ensure no impacts to stream at these locations. Should it become necessary to provide additional stream stabilization at
these parallel locations, a permit modification will be required.
The permittee shall use Design Standards in Sensitive Watersheds [15A NCAC 4B.0124(a)-(e)]. Temporary cover (wheat,
millet, or similar annual grain) or permanent herbaceous cover should be planted on all bare soil within 15 days of ground
disturbing activities to provide long-term erosion control. Erosion control matting should be used in conjunction with
appropriate seeding on disturbed soils in steep slope and riparian areas. Matting should be secured in place with staples or
wherever possible, lives stakes of native trees. Straw mulch and tall fescue should not be used in riparian areas.
No c hCarolina
~atura!!y
North Carolina Division of Water Quality 585 Waughtown Street Phone [phone] Customer Service
Internet: www.ncwaterquality.org Winston-Salem, NC 27107 FAX [phone]
An Equal OpportunitylAffirmative Action Employer - 50% Recycledl10% Post Consumer Paper

Mr. Mike Pettyjohn, P.E.
August 17, 2007
llWQ# 07-0093 re-issuance
Page 2
4. Erosion and sediment control practices must be in full compliance with all specifications governing the proper design,
installation and operation and maintenance of such Best Management Practices in order to protect surface waters standards:
a. The erosion and sediment control measures for the project must be designed, installed, operated, and maintained in
accordance with the most recent version of the North Carolina Sediment and Erosion Control Planning and Design
Manual.
b. The design, installation, operation, and maintenance of the sediment and erosion control measures must be such that they
equal, or exceed, the requirements specified in the most recent version of the North Carolina Sediment and Erosion
Control Manual. The devices shall be maintained on all construction sites, borrow sites, and waste pile (spoil) projects,
including contractor-owned or leased borrow pits associated with the project.
c. For borrow pit sites, the erosion and sediment control measures must be designed, installed, operated, and maintained in
accordance with the most recent version of the North Carolina Surface Mining Manual.
d. The reclamation measures and implementation must comply with the reclamation in accordance with the requirements of
the Sedimentation Pollution Control Act.
5. There shall be no excavation from, or waste disposal into, jurisdictional wetlands or waters associated with this permit
without appropriate modification. Should waste or bon~ow sites be located in wetlands or streams, compensatory mitigation
will be required since that is a direct impact from road construction activities.
6. Sediment and erosion control measures shall not be placed in wetlands or waters to the maximum extent practicable. If
placement of sediment and erosion control devices in wetlands and waters is unavoidable, they shall be removed and the
natural grade restored within six months of the completion of the project.
7. Native riparian vegetation must be reestablished within the construction limits of the project by the end of the growing season
following completion of construction.
8. Stormwater should be directed to vegetated buffer areas, grass lined ditches or other means appropriate to the site for the
purpose of pre-treating Stormwater runoff, and must not be routed directly into streams. Mowing of existing vegetated
buffers is strongly discouraged, so that they maybe utilized for Stormwater sheet flow.
9. Where practical, placement of culverts and other structures in waters, streams, and wetlands shall be placed below the
elevation of the streambed by one foot for all culverts with a diameter greater than 48 inches, and 20 percent of the culvert
diameter for culverts having a diameter less than 48 inches, to allow low flow passage of water and aquatic life. Design and
placement of culverts and other structures including temporary erosion control measures shall not be conducted in a manner
that may result in dis-equilibrium of wetlands or streambeds or banks, adjacent to or upstream and down stream of the above
structures. The applicant is required to provide evidence that the equilibrium is being maintained if requested in writing by
DWQ. If this condition is unable to be met due to bedrock or other limiting features encountered during construction, please
contact the NC DWQ for guidance on how to proceed and to determine whether or not a permit modification will be
required.
10. Due to the steep grade conditions at stations 6+63, 11+40 and 20+g7, DWQ will not require the burial of the culverts in the
streambed in these locations. Energy dissipater pads maybe necessary to protect the stream from erosion impacts.
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. The dimension, pattern and profile of the stream above and below the crossing should not be modified. Disturbed
floodplains and streams should be restored to natural geomorphic conditions.
13. The use of rip-rap above the Normal High Water Mark shall be minimized. Any rip-rap placed for stream stabilization shall
be placed in stream channels in such a manner that it does not impede aquatic life passage.
14. If concrete is used during construction, a dry work area should be maintained to prevent direct contact between curing
concrete and stream water. Water that inadvertently contacts uncured concrete should not be discharged to surface waters
due to the potential for elevated pH and possible aquatic life and fish kills.
15. During the construction of the project, no staging of equipment of any kind is permitted in waters of the U.S., or protected
riparian buffers.
16. 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.
17. All mechanized equipment operated near surface waters must be regularly inspected and maintained to prevent contamination
of stream waters from fuels, lubricants, hydraulic fluids, or other toxic materials.
18. Under no circumstances must rock, sand or other materials be dredged from the wetted stream channel under authorization of
this permit, except in the immediate vicinity of the culverts.

Mr. Mike Pettyjohn, P.E.
August. 17, 2007
llWQ# 07-0093 re-issuance
Page 3
19. Temporary dewatering sites must be restored to preexisting conditions unless more natural geomorphic conditions can be
provided.
20. Discharging hydroseed mixtures and washing out hydroseeders and other equipment in or adjacent to surface waters is
prohibited.
21. The permittee and its authorized agents shall conduct its activities in a manner consistent with State water quality standards
(including any requirements resulting from compliance with §303(d) of the Clean Water Act) and any other appropriate
requirements of State and Federal law. If DWQ determines that such standards or laws are not being met (including the
failure to sustain a designated or achieved use) or that State or federal law is being violated, or that further conditions are
necessary to assure compliance, DWQ may reevaluate and modify this certification.
22. Upon completion of the project, the NCDOT shall complete and return the enclosed "Certification of Completion Form" to
notify DWQ when all work included in the 401 Certification has been completed. The responsible party shall complete the
attached form and return it to the 401/Wetlands Unit of the Division of Water Quality upon completion of the project.
If you do not accept any of the conditions of this certification, you may ask for an adjudicatory hearing. You must act within 60 days
of the date that you receive this letter. To ask for a hearing, send a written petition, which conforms to Chapter 15013 of the North
Carolina General Statutes to the Office of Administrative Hearings, 6714 Mail Service Center, Raleigh, N.C. 27699-6714. This
certification and its conditions are final and binding unless you ask for a hearing.
This letter completes the review of the Division of Water Quality under Section 401 of the Clean Water Act. If yogi have any
questions, please contact Sue Homewood at 336-771-4964 or at [e-mail].
Sincerely,
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Coleen H. Sullins
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Attachment
cc: Monte Matthews, USACE Raleigh Field Office
Heath Slaughter, Division 11, Division Environmental Officer
DWQ Winston Salem Regional Office
DWQ Central Files