20130918 Ver 7_Application_20160309

Transportation
March 9, 2016
U.S. Army Corps of Engineers
Raleigh Regulatory Field Office
6508 Falls of the Neuse Road, Suite 120
Raleigh, NC 27609
ATTN: Mr. David Bailey
NCDOT Coordinator
PAT McCR�RY
coven,or
NICHOLAS j. TENNYSON
Secrerary
Subject: Request for Modification to the Section 404 Individual Permit and Section 401
Water Quality Certification for the proposed Greensboro Eastern Loop from US
70 Relocation to SR 2303 (Lawndale Drive), Guilford County, Division 7. WBS
Element No. 34821.1.1, TIP Nos. U-2525B and U-2525C.
Reference: USACE Individual Permit Action ID SAW-2005-21386, dated April 15, 2014.
USACE Individual Permit Modifcation Action ID SAW-2005-21386, October 31, 2014.
USACE Individual Permit Modification Action ID SAW-2005-21386, December 4, 2014.
USACE Individual Permit Modification Action ID SAW-2005-21386, March 12, 2015.
USACE Individual Permit Modification Action ID SAW-2005-21386, July 24, 2015
NCDWR Project No. 20130918, Certification No. 3978, February 6, 2014.
NCDWR Project No. 20130918 v2, Modification to Certification No. 3978, June 24, 2014.
NCDWR Project No. 20130918 v3, Modification to Certification No. 3978, October 15, 2014.
NCDWR Project No. 20130918 v4, Modification to Certification No. 3978, December 11, 2014.
NCDWR Project No. 20130918 v5, Modification to Certification No. 3978, March 18, 2015.
NCDWR Project No. 20130918_v6, Modification to Certification No. 3978, July 21, 2015.
Dear Sir:
The North Carolina Depat-tment of Transportation (NCDOT) is currently in the process of
constructing a four/six-lane divided facility on new location extending fi•om the US 70 relocation to
SR 2303 (Lawndale Drive) in Greensboro, Guilford County, North Carolina. The project involves
several crossings of streams and tributaries. Construction of the permanent crossing near Rankin Mill
Road at required a temporaiy crossing (Permit Site 37) for which a modification was received on
March 12, 2015. Likely due to several overtopping events at the temporaiy crossing, severe bank
erosion has occurred on the downstream side of the temporary crossing. Compounding this problem,
is a wetland located less than twenty feet from the eroding bank. Considering the rapid rate of bank
erosion and the proximity of the adjacent wetland, NCDOT is proposing to restore the eroded bank
!"�'Nothing Compares�..�_
State of Noith Carolina � Department of Transportation � PDEA-Nahual Environmen[ Section
1020 Birch Ridge Dm�e, 27G10 � 1598 Ntail Seivice Center � Raleigh, North Carolina 27G99-li98
919-707-6000 T 919-212-5785 F

by placing large riprap in the eroded area to help armor the bank against future high flow events and
to prevent fiirther bank erosion.
Repair of the bank will involve the placement of Class VII material (at least 50% of rock with
diameter of 1.5 to 3 ft, 40% with diameter of 2 inches to 1.5 ft and not more than 10% with less than
Z inches in diameter) placed at a 1.5 to 1.0 slope along the eroded bank. Larger rock will be placed
at the bottom to better anchor the project with smaller rock used at the top and to fill in gaps. The
height of the riprap from toe of slope will be approximately eleven feet and the linear width along
the stream will be 55 linear feet. Heavy machineiy will access the proposed area of work from the
landward side of the stream through the wetland with no proposed work in the actual stream.
Approved temporary matting will be utilized in all portions of the wetland that may be crossed by
the heavy machinery with an emphasis on impacting as little of the wetland as possible. At the
conclusion of the bank stabilization, a wetland soil and vegetative mix shall be reestablished in the
impacted wetland area to return the wetland to pre-existing elevation.
NCDOT also proposes to monitor the bank stabilization for further downstream impacts of the stream
bank for six months after the work is completed. Bi-monthly reports will be available with photos
and description of the downstream area. NCDOT is committed to feasibly working with the
environmental agencies to repair any bank erosion issues resulting from the bank stabilization.
The proposed work will result in 55 linear feet (0.01 acre) of permanent impacts for bank stabilization
along Noi�th Buffalo Creek and approximately 0.05 acre of temporary impacts to the adjacent
wetlands. Impacts within the buffer have already been accounted for in the original permit. The
length of time expected to complete the project is three to five days. No additional mitigation is
required for these activities.
Application is hereby made for a modification to the Departrnent of the Army Section 404
Nationwide Permits and NCDENR-DWQ Section 401 Water Quality Certification (WQC). Please
see the attached drawings showing the location and outlining the amount of impacts. The NCDOT
will comply with al] applicable IP and WQC conditions and utilize Best Management Practices
during the construction and removal of the project. If you have any questions or need additional
information, please contact Erin Cheely at [phone].
Sincerely,
�� Richard W. Hancock, P.E., Manager
Project Development and Environmental Analysis Unit
cc: NCDOT Permit Application Standard Distribution List

I PROfFCi REfEiE�iCE NO.
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SEE SHEET 94 FOR -L- PROFIL�.
SfE SHEE€5 5-173 FHRU 5-293 FOR STRUCFURE ?LANS

WETLAND PERMIT IMPACT SUMMARY
WETLAND IMPACTS SURFACE WATER IMPACTS
Hand Existing Existing
Permanent Temp. Excavation Mechanized Clearing Permanent Temp. Channel Channel Natural
Site Station Structure Fillln Fillln in Clearing in SW SW Impacts Impacts Stream
No. (From/To) Size / Type Wetlands Wetlands Wetlands in Wetlands Wetlands impacts impacts Permanent Temp. Design
(ac) (ac) (ac) (ac) (ac) (ac) (ac) (ft) (tt) (ft)
35 48+53 -Y23- 36" RCP <0.01 <0.01 120 17
Bank Stabilization 10
36 18+48 -Y21A- 54" RCP <0.01 <0.01 <0.01 101 21
Bank Stabilization 10
37 Tempora stream 0.05 200
& wetland crossin s
BANK STABILIZATION 0.01 55
THIS SHEET SUBTOTALS: <0.01 0.05 0.02 <0.01 296 238
SUBTOTALS OF ALL OTHER: 6.86 0.00 0.31 0.38 0.03 1.70 0.09 10525 547 2055
TOTALS: 6.86 0.05 0.31 0.38 0.03 1.73 0.10 10821 785 2055
PERMIT DRAW INGS NOTE: Rounded totals are based upon sum of actual impacts.
SHEET 93 OF 93
Revised 10/01 /14
Revised 11/20/14 SITE 11A CL II BENT PROTECTION
Revised 2/20/15 - PERMIT SITE 37
Revised 3/9/16 - PERMIT SITE 37
Revised 3/9/16 - Totals Accordingly
Revised 3/31/05