20110249 Ver 1_Approval Letter_20110413

NCDENP*
North Carolina Department of Environment and Natural Resources
Beverly Eaves Perdue
Governor
Division of Water Quality
Coleen H. Sullins
Director
Dee Freeman
Secretary
April 13, 2011
DWQ# 11-0249
Cabarrus County
Mr. Barry Moose, P.E.
NCDOT Division 10
716 West Main Street
Albemarle, NC 28001
APPROVAL of 401 Water Quality Certification with Additional Conditions
Dear Mr. Moose:
You have our approval, in accordance with the attached conditions and those listed below, to permanently
impact 10 linear feet (If) (culvert extension) and to temporarily impact 50 If (dewatering activities) of an
unnamed tributary to Rocky River as described in your application received by the Division of Water Quality
(DWQ) on March 15, 2011, and additional information received electronically April 6, 2011. The location of the
project is State Road 1100 (Pinebluff Road) in Cabarrus County. After reviewing your application, we have
determined that this project is covered by Water Quality General Certification Number 3820. Please note that
you should get any other federal, state or local permits before proceeding with your project, including those
required by (but not limited to) Sediment and Erosion Control, Non-Discharge, and Water Supply Watershed
regulations. This approval will expire with the associated 404 permit unless otherwise specified in the Water
Quality Certification.
This approval is valid solely for the purpose and design that you described in your application (unless modified
below). Should your project change, you must notify the DWQ in writing and you may be required to submit a
new application. If the property is sold, the new owner must be given a copy of this Certification and approval
letter and is thereby responsible for complying with all 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 may be 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 those listed below:
Unless otherwise approved in this certification, placement of culverts and other structures in open waters
and streams shall be placed below the elevation of the streambed by one (1) 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 downstream
of the above structures.
Mooresville Regional Office
Location: 610 East Center Ave., Suite 301 Mooresville, NC 28115
Phone: [phone] Fax: [phone] Customer Service: 1-877-623-6748
Internet: hflpJ/Podal.ncdencorgAveb1i
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Mr. Barry Moose, P.E.
Page Two
The applicant is required to provide evidence that the equilibrium is being maintained, if requested in
writing by the NCDWQ. If this condition is unable to be met due to bedrock or other limiting features
encountered during construction, please contact NCDWQ for guidance on how to proceed and to
determine whether or not a permit modification will be required.
2. A headcut exists in the stream approximately three (3) feet upstream of the culvert inlet. Based on
the drawings in the Pre-Construction Notification (PCN), electronic submittals and discussions with
NCDOT staff, the culvert extension will resolve stream instability associated with the headcut.
Please be advised that if the headcut continues to migrate upstream and/or the culvert does not
resolve the existing issue, NCDOT will be required to provide corrective measures to ensure stream
instability (i.e., installation of grade control structures).
3. The natural stream dimension shall be restored at the outlet end of the culvert as described in the
information received electronically on April 6, 2011. This includes armoring the existing scourhole
and installing coir fiber matting to provide stability of the re-established stream dimension.
4. All portions of the proposed project draining to 303(d) listed watersheds that are impaired due to
turbidity shall be designed, constructed, and operated with sediment and erosion control measures
that meet Design Standards in Sensitive Watersheds [15A. NCAC 4B .0124]. However, due to the
size of the project, NC DOT shall not be required to meet 15A NCAC 413 .0124(a) regarding the
maximum amount of uncovered acres.
5. The dimension, pattern and profile of the stream above and below the crossing shall not be modified.
Disturbed floodplains and streams shall be restored to natural geomorphic conditions.
6. Heavy equipment shall be operated from the banks rather than in the stream channel in order minimize
sedimentation and reduce the introduction of other pollutants into the stream.
7. No rock, sand or other materials shall be dredged from the stream channel except where authorized by this
certification.
8. Temporary dewatering sites must be restored to pre-existing conditions unless more natural geomorphic
conditions can be provided.
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 should not be
discharged to surface waters due to the potential for elevated pH and possible aquatic life and fish kills.
10. 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 the 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.
11. The outside buffer, wetland or water boundary located within the construction corridor approved by this
authorization shall be clearly marked by highly visible fencing prior to any land disturbing activities.
Impacts to areas within the fencing are prohibited unless otherwise authorized by this certification.
12. 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.
Mr. Barry Moose, P.E.
Page Three
13. All fill slopes located in jurisdictional wetlands shall be placed at slopes no flatter than 3:1, unless otherwise
authorized by this certification.
14. Discharging hydroseed mixtures and washing out hydroseeders and other equipment in or adjacent to
surface waters is prohibited.
15. A copy of this Water Quality Certification shall be posted on the construction site at all times. In addition, the
Water Quality Certification and all subsequent modifications, if any, shall be maintained with the Division
Engineer and the on-site project manager.
16. Native riparian vegetation must be re-established within the construction limits of the project by the end of the
growing season following completion of construction.
17. Sediment and erosion control measures shall not be placed in wetlands or waters to the maximum extent
practical. If placement of sediment and erosion control devices in wetlands and waters is unavoidable, they
shall be removed and the natural grade restored within 30 days after the Division of Land Resources has
released the project.
18. 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.
19. The North Carolina Department of Transportation (NCDOT) and its contractors and/or agents shall not
excavate, fill or perform mechanized land clearing at any time in the construction or maintenance of this
project within waters and/or wetlands, except as authorized by this Certification, or any modification to this
Certification (e.g., no work shall occur outside of the footprint of the plans provided). In addition, there shall
be no excavation from or waste disposal into jurisdictional wetlands or waters associated with this
Certification without appropriate modification. If this occurs, compensatory mitigation may be required since it
is a direct impact from road construction activities.
20. The Permittee shall report any violations of this certification to the Division of Water Quality within 24 hours
of discovery.
21. Upon completion of the project, the NCDOT Division Engineer shall complete and return the enclosed
"Certificate of Completion" form to notify DWQ when all work included in the 401 Certification has been
completed. Please include photographs upstream and downstream of the structure to document correct
installation.
Mr. Barry Moose, P.E.
Page Four
22. Continuing Compliance. NCDOT shall conduct its activities in a manner so as not to contravene any state
water quality standard (including any requirements for compliance with section 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 to include conditions appropriate to assure compliance with such standards and
requirements in accordance with 15 A NCAC 2H.0507(d). Before codifying the certification, DWQ shall notify
NCDOT and the USACE, provide public notice in accordance with 15A NCAC 2H.0503, and provide
opportunity for public hearing in accordance with 15A NCAC 2H.0504. Any new or revised conditions shall
be provided to NCDOT in writing, shall be provided to the USACE for reference in any permit issued pursuant
to Section 404 of the Clean Water Act, and shall also become conditions of the 404 Permit for 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 that
conforms to Chapter 150B 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 by the Division of Water Quality under Section 401 of the Clean Water Act. If
you have any questions, please telephone Polly Lespinasse in the Mooresville Regional Office at 704-663-
1699.
Sincerely,
for Coleen H. Sullins
Attachments
cc: Liz Hair, USACE Asheville Field Office
Sonia Carrillo, DWQ Wetlands Unit
File Copy