20110656 Ver 1_Approval Letter_20111006

AVA
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Eeverly Eaves Perdue Coleen H. Sullins
Governor Director
Dee Freeman
Secretary
October 6, 2011
DWQ# 11-0656
Union County
Dr. Gregory J. Thorpe, Manager
Project Development and Environmental Analysis Branch
North Carolina Department of Transportation
1598 Mail Service Center
Raleigh, North Carolina, 27699-1548
APPROVAL of 401 Water Quality Certification with Additional Conditions, Proposed Bridge
Replacement over Waxhaw Creek on State Road 1113 (Davis Road), Union County, TIP No. 8-4294,
WBS No. 33632.1.1
Dear Dr. Thorpe:
You have our approval, in accordance with the attached conditions and those listed below, to permanently
impact 10 linear feet (If) (riprap bank stabilization) and to temporarily impact 20 If (temporary fill) of Waxhaw
Creek, a perennial stream, and to permanently impact 0.13 acres of wetland (0.06 acres of fill and 0.07 acres
of mechanized clearing) as described in your application received by the Division of Water Quality (DWQ) on
October 4, 2011. The location of the project is State Road 1113 (Davis Road) in Union County. After
reviewing your application, we have determined that this project is covered by Water Quality General
Certification Numbers 3688, 3689 and 3701. 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:
1. The permit drawings depict the termination of the proposed ditchline (shown on the upstream, left bank on
the drawings) in the stream. This certification is not authorizing the construction of the ditchline in the
stream. This certification is authorizing the use of riprap at the OUtfall of the ditchline on the streambank
only. Additionally, NCDWQ recommends the use of Class II riprap at the outfall of the above referenced
ditchline. If riprap from the ditchline is deposited in the stream, NCDOT will be required to remove the riprap
and properly stabilize the ditchline outfall.
Mooresville Regional Office
Location: 610 East Center Ave., Suite 301 Mooresville, NC 28115
Phone: [phone] Fax: [phone] Customer Service: 1-877-623.6748
Internet: http://porta;.ncdenr.org/web/wq
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2. The use of riprap above the normal high water mark shall be minimized. Any riprap placed for stream
stabilization shall be placed in stream channels in such a manner that it does not impede aquatic life
passage.
3. The post-construction removal of any temporary bridge structures must return the project site to its
preconstruction contours and elevations. The impact areas shall be revegetated with appropriate native
species.
4. Strict adherence to the most recent version of NCDOT's Best Management Practices for Bridge Demolition
and Removal, approved by the U.S. Army Corps of Engineers, is a condition of the 401 Water Quality
Certification.
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 scourholes, vegetated
buffers, etc.) before entering the stream. Please refer to the most current version of Stormwater Best
Management Practices.
6. Bridge piles and bents shall be constructed using driven piles (hammer or vibratory) or drilled shaft
construction methods. More specifically, jetting or other methods of pile driving are prohibited without prior
written approval from NCDWQ first.
7. 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 properly disposed of.
8. All pile driving or drilling activities shall be enclosed in turbidity curtains unless otherwise approved by
NCDWQ in this certification.
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9. 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.
10. 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.
11. No rock, sand or other materials shall be dredged from the stream channel except where authorized by this
certification.
12. Temporary dewatering sites must be restored to pre-existing conditions unless more natural geomorphic
conditions can be provided.
13. 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.
14. 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.

Dr Gregori -norpe
Pace Three
15. The dimension, pattern and profile of the stream above and below the crossing should not be modified.
Disturbed floodpiains and streams should be restored to natural geomorphic conditions.
15. 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.
17. All fill slopes located in jurisdictional wetlands shall be placed at slopes no flatter than 3:1, unless otherwise
authorized by this certification.
18. Discharging hydroseed mixtures and washing out hydroseeders and other equipment in or adjacent to
surface waters is prohibited.
19. 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.
20. 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.
21. 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 30 days after the Division of Land Resources has
released the project.
22. 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.
23. The Permittee shall ensure that the final design drawings adhere to the certification and to the drawings
submitted for approval.
24. The outside buffer, wetland or water boundary located within the construction corridor approved by this
certification 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.
25. The Permittee shall report any violations of this certification to the Division of Water Quality within 24 hours of
discovery.

Dr. Gregor/ Thorpe
Page Four
26. 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.
27. 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.
28. 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 refefence 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,
forColeen H. Sullins
Attachments
cc: Liz Hair, USACE Asheville Field Office
Sonia Carrillo, DWQ Wetlands Unit
Michael Turchy, NCDOT PDEA
Larry Thompson, DOT Division 10
File Copy