20051396 Ver 3_More Info Received_20080307

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STATE OF NORTH CAROLINA
DEPARTMENT OF TRANSPORTATION
MICHAEL F. EASLEY
GOVERNOR
January 17, 2008
US Army Corps of Engineers
Regulatory Field Office
151 Patton Avenue, Room 208
Asheville, NC 28801-5006
Attn: Mr. Steve Lund
NCDOT Coordinator
Dear Sir:
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LYNDO TIPPETT
SECRETARY
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Subject: Application for Modification to the Section 404 and 401 Permits for TIP R-
2616 for the proposed widening of US 601 from the South Carolina State Line to
North of Marion Lee Road (SR 2105) south of Monroe in Union County; NCDOT
Division 10. Federal Project No. STP-NHS-601(4); State Project No. 8.1690303,
WBS Element 34485.1.1.
Reference: Permit Action ID: 200530393
The North Carolina Department of Transportation (NCDOT) proposes to widen US 601
from the South Carolina State Line to north of Marion Lee Road (SR 2105). The proposed
project will consist of widening the existing two lane facility to a four lane grassed median
facility. The original permit application was submitted on July 21, 2005. A revision to this permit
for the addition of the bottomless culvert at Wicker Branch was submitted on November 7, 2005.
The permit was revised to address comments from NCDWQ on February 16, 2006. The permit
was again revised on May 9, 2006 due to additional sites added from field investigation by
NCDWQ.
This project was selected for the design-build process. NCDOT is utilizing the design-
build concept to expedite project delivery and streamline design processes. The goal of this
process is to reduce project costs while allowing for value engineering and innovative design..
The purpose of this submittal is to request a modification to the Section 404 and 401 Permits as a
result of design revisions made by the design-build team. Following is a description of the
modification that is proposed at each site. The site and construction plan sheet are referenced in
bold followed by the reason for the modification at each site and the change to any impacts that
have occurred.
MAILING ADDRESS:
NC DEPARTMENT OF TRANSPORTATION
PROJECT DEVELOPMENT AND ENVIRONMENTAL ANALYSIS
1598 MAIL SERVICE CENTER
RALEIGH NC 27699-1598
TELEPHONE: [phone]
FAX: [phone]
WEBSITE: WWW.DOH.DOT.STATE.NC.US
LOCATION:
PARKER LINCOLN BUILDING
2728 CAPITAL BLVD., SUITE 240
RALEIGH NC 27604

Site lA and Construction Plan Sheet 4
Revision: Revised pipe size from 2 @ 42" RCP to 2 @ 48" RCP.
Reason: The 2 @ 42" RCP did not account for 20% burial of the pipe invert as required in
jurisdictional streams.
Impacts: Stream and wetland impacts at this site have not changed.
Site 1 and Construction Plan Sheet 10
Revision: Revised 2 @ 54" RCP alignment.
Reason: After further field investigations and surveys, the pipe alignment was revised to match
the current stream location on the inlet end.
Impacts: Stream impacts at this site have not changed.
Site 2 and Construction Plan Sheet 11
Revision: Revised culvert from 3 @ 10' x 8' RCBC to 32' x 10' Conspan Bottomless culvert.
Reason: Due to the abundance of bedrock at this location confirmed by additional geotechnical
investigations, it was determined that a bottomless structure would be a suitable alternative.
Impacts: Stream and wetland impacts at this site have not changed.
Site 3 and Construction Plan Sheet 12
Revision: Revised 2 @ 65' Bridge (130' overall length) to 1 @ 145' Bridge.
Reason: Due to scour concerns, the bridge was lengthened and the bent removed from the
channel. The banks of the channel under the bridge will be rip rapped for added stability and a
cross vane will be installed at the downstream face to direct the flow in to the existing channel.
No deck drains will be installed on the bridges.
Impacts: It appears that the impacts from the bents in the channel were not included as
permanent impacts, so no stream impacts have changed at this site.
Site 5 and Construction Plan Sheet 16
Revision: Revised drainage layout and 48" RCP cross pipe alignment.
Reason: The 48" RCP was shifted to better align with the existing channel. It appears that the
property owner may have regraded the area recently. The drainage system layout was revised due
to revisions in the vertical grade of the proposed roadway.
Impacts: Permanent stream impacts at this site have been reduced by 48 feet (from 240' to 192')
due to the lowered grade. Temporary stream impacts have been reduced 0.019 acres (from 0.02
ac to <0.01 ac).
Site 8 and Construction Plan Sheet 18
Revision: Increased cross pipe size from 24" to 30" RCP.
Reason: The hydrology for the proposed pipe was revised which increased the design discharge.
Also, the grade of the proposed roadway was altered in this area which required the pipe to be
extended by 3 feet.
Impacts: Permanent wetland impacts have increased slightly at this site (from <0.01 ac to 0.01
ac).
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Site 9 and Construction Plan Sheet 19
Revision: Revised drainage layout to save existing pond.
Reason: During right-of--way negotiations with the property owner, it was determined that the
property owner desired to retain the pond adjacent to the roadway. With a few drainage and right-
of-way revisions, the majority of the pond (98%) can be retained. It will be necessary to construct
a small portion of the berm so that it is entirely outside of NCDOT right-of--way.
Impacts: By retaining the pond, permanent surface water impacts at this site have been reduced
by 0.81 acres (from 0.83 ac to 0.02 ac). However, the remainder of the pond will be classified as
temporary surface water impacts (increase of 0.81 ac) in order to reconstruct the berm.
Site 10 and Construction Plan Sheet 19
Revision: Lowered the vertical grade and revised pipe size from 54" RCP to 60" RCP.
Reason: The vertical grade was lowered to reduce the amount of fill material needed and to
reduce the footprint of the roadway impact. Also, the 54" RCP did not account for 20% burial of
the pipe invert as required in jurisdictional streams.
Impacts: Due to the lowered vertical grade, permanent stream impacts have been reduced by 10
feet (from 170' to 160') and wetland impacts have been reduced by 0.004 acres (from 0.034 ac to
0.030 ac). Temporary stream impacts have increased slightly by 0.003 acres but are still less than
0.01 acres.
Site 11 and Construction Plan Sheet 20
Revision: Revised pipe size from 66" RCP to 72" RCP.
Reason: The 66" RCP did not account for 20% burial of the pipe invert as required in
jurisdictional streams.
Impacts: Stream impacts at this site have not changed.
Site 12 and Construction Plan Sheets 20 and 21
Revision: Extended 48" RCP cross pipe.
Reason: A proposed driveway access was shown on the original permits. This driveway would
fill in across the stream at the outlet of the proposed pipe, so the cross pipe was extended to
provide access to the parcel.
Impacts: The length of permanent stream impacted has increased by 73 feet (from 290' to 363').
Site 13 and Construction Plan Sheet 23
Revision: Revised culvert from 1 @ 12' x 10' RCBC to 2 @ 9' x 8' RCBC.
Reason: The proposed 12' x 10' RCBC was not flowing full during the design storm (50-yr), so
the culvert was redesigned. The new proposed 2 @ 9' x 8' RCBC provides a larger opening (144
sq. ft.) for passage of storms.
Impacts: Permanent stream impacts have increased by 11 feet (from 118' to 128').
Site 15 and Construction Plan Sheets 23 and 24
Revision: Revised drainage layout and changed cross pipe from 2 @ 30" RCP to 1 @ 36" RCP.
Reason: The drainage layout was revised to reflect revisions to the vertical grade. The slight
raise of the vertical grade in this area provided adequate cover to use a 36" RCP. Originally, the 2
@ 30" RCP were used because adequate cover over the pipes could not be achieved.
Impacts: Stream impacts at this site have not changed.
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Site 16 and Construction Plan Sheet 25
Revision: Realigned bottomless culvert to remove bend inside culvert.
Reason: Several concerns arose regarding the use of a bottomless culvert with a bend. The bend
presents an issue of possibly becoming clogged with debris. During field reconnaissance, it was
noted that there were a considerable amount of fallen trees which makes the potential for debris
at this site high. Also, the potential for scour is drastically increased in the vicinity of the bend.
The stream banks inside the culvert bend would likely never be stabilized since there will not be
any remaining root mass on the banks. During construction of the bottomless culvert, with or
without the bend, the channel will need to be completely reconstructed due to the excavation
depth necessary to install the footings of the culvert down to solid rock. With the straight
alignment, the scour potential is reduced and the reconstructed channel within the culvert has a
better chance of remaining stable.
Impacts: Permanent stream impacts increased by 163 feet (from 25' to 188'). Since the box
culvert is being replaced with the bottomless Conspan culvert, the end result is no loss of waters
and therefore will not require additional mitigation.
Site 22 and Construction Plan Sheets 33 and 34
Revision: Revised drainage layout.
Reason: The drainage layout was revised and a 2' base ditch was added along the right side of
the roadway.
Impacts: Stream impacts at this site have not changed.
Site 23 and Construction Plan Sheet 37
Revision: Revised drainage layout and changed cross pipe size from 24" RCP to 30" RCP.
Reason: The drainage layout was revised to account for vertical grade revisions. The hydrology
for the proposed cross pipe was revised which increased the design discharge requiring a larger
pipe.
Impacts: Wetland impacts at this site have not changed.
Site 23A and Construction Plan Sheet 38
Revision: Revised pipe size from 42" RCP to 48" RCP.
Reason: The 42" RCP did not account for 20% burial of the pipe invert.
Impacts: Stream impacts at this site have not changed.
Site 25 and Construction Plan Sheet 42
Revision: Revised drainage layout.
Reason: The originally permitted design allowed runoff from paved areas to bypass the
hazardous spill basin and potentially enter the jurisdictional stream. By extending the shoulder
berm gutter on both sides of the roadway, all runoff from paved areas is directed to the hazardous
spill basin.
Impacts: Stream impacts at this site have not changed.
Overall, total wetland impacts (riverine and non-riverine) decreased slightly from 0.353
acres to 0.344 acres due to the design revisions. Total permanent surface water impacts were also
decreased mainly due to the addition of the bottomless culvert at the Mills Creek crossing (from
3202 feet to 3066 feet). Compensatory mitigation for riverine wetland, non-riverine wetland, and
stream impacts through Ecosystem Enhancement Program was accepted for the original impact
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amounts on Apri120, 2006. Due to the reduction from these original impacts, no additional
mitigation is needed.
The revised design does not compromise NCDOT's compliance with the existing
permit conditions. The revisions have been evaluated for compliance with the avoidance/
minimization criteria and are in compliance with all previous issues, including the following:
• Protected Species
• Aquatic Life passage
• FEMA compliance
• Cultural Resources
REGULATORY APPROVALS
Application is hereby made to the Department of the Army for the modification of the
Section 404 Individual Permit and the Section 401 Water Quality Certification for the above
described activities. In compliance with Section 143-215.3D(e) of the NCAC we have will
provide $570.00 as payment for processing the permit modification. We are providing five
copies of this application to NCDWQ, for their use. If you have any questions or need additional
information, please contact Mr. Michael Turchy at maturch~(u~dot.state.nc.us or [phone].
Sincerely
Gregory J. Thorpe, Ph.D., Manager
Project Development and Environmental Analysis Branch
Cc:
W/ Attachment
Mr. Brian Wrenn, NCDWQ (5 Copies)
Ms. Marella Buncick, USFWS
Ms. Marla Chambers, NCWRC
Ms. Kathy Matthews, USEPA
Mr. Ronald Mikulak, USEPA -Atlanta, GA
Mr. Clarence W. Coleman, P.E., FHWA
W/o attachment: (see website for attachments)
Dr. David Chang, P.E., Hydraulics
Mr. Greg Perfetti, P.E., Structure Design
Mr. Victor Barbour, P.E., Project Services Unit
Mr. Mark Staley, Roadside Environmental
Mr. Barry Moose, PE, Division Engineer
Mr. Larry Thompson, DEO
Mr. Jay Bennett, P.E., Roadway Design
Mr. Majed Alghandour, P. E., Programming and TIP
Mr. Art McMillan, P.E., Highway Design
Mr. Scott McLendon, USACE, Wilmington
Ms. Beth Harmon, EEP
Mr. Todd Jones, NCDOT External Audit Branch
Mr. Carl Goode, PE, Human Environment Unit Head
Mr. Mark Pierce, P.E., Project Planning Engineer
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IMPACT SUMMARY
W ETLAND IMP ACTS SURFAC E WATER IMPA CTS

Site
No.
Station
(From/To)
Original Structure
Size ~ Type
FIU h
Wetlands
(ac)
Temp. Fill
M Wetlands
(ac)
Excavation
N Wetlands
(ac) Mechanized
Clearing
(Method III)
(ac) Hand
Clearing In
Wetlands
(ac) Permanent
SW
impacts
(ac) Temp.
SW
Impacts
(ac) Existing
Channel
Impacts
Permarrent (tt] Existing
Channel
Impacts Temp.
(tt) Natural
Stream
Design
(tt)
Permit
ModlUcatlon
Comments
1A L 24+12 2 @ 42" RCP 0.012 - 0.008 - 0.007 0.001 104 10 Yes Chan to 2~8" RCP
1 L 102+00 to 106+50 2 ~ 54" RCP 0.02 0.01 175 - 75 Yes Chan PI omen(
2 L 118+42 3 10'x8' RCBC 0.003 + 0.08 0.03 + 186 + 66 + 150' Yes Chan l0 32'x10' Cons an
3 L 129+50 2 @ 65' Brldga 0.15 150 39 •• yea Change Bridge To 1 tid 145' Single Span
Removed Bents from Channel
4 L 148+91 LT 42" RCP 0.003 0.001 48 10 No NO Chan e
5 L 180+30 LT b RT 4B" RCP 0.02 0.001 - 192 - 20 - Yea Revised Drolna to out
6 L 180+6(1 LT 46" RCP 0.006 + 0.008 + 0.003 No No Chan s
7 L 180+30LT 163+00 Earthsn Ffll 0.03 0.004 215 10 No No Change
8A L 206+00 36" RCP oAt 0.001 150 10 No No C s
8 L 215+70 RT 24" RCP 0.007 + 0.(103 yes Mcreese PI Size b 30" RCP
8 L 221+70 LT Dnia Pond OA2 - 0.81 + Yea Saved Pond
10 L 231+30 54" RCP 0.03 0.013 0.01 0.004 + 160 32 + Yss Mcroaae PI Size b 60" RCP
11 L 242+35 66" RCP 0.04 0.003 161 20 Yes Increase PI Size b 72" RCP
12 L 248+30 TO 251+09 48" RCP 0.04 0.003 363 + 22 Yes L thetted P br Orlvewa
13 L 281+51 12'x10' RCBC 0.04 0.01 128 40 Yes Cha b 2 9'x8' RCBC
14 L 268+06.5 2 ~ 8'x7' RCBC 0.04 0.01 124 62 No No Chan e
15 L 290+00 to 294+30 2 @ 30" RCP 0.06 0.07 466 62 yes Revised Drainage Layout
Chan b 1 36" RCP
16 L 315+56 16'x8' Bottomless
Structure' 0.08 (+) 0.03 (+) 188 (+) 100 (+) 176 • Yes Realign Con-Span; ENminate Bend
17 L 342+00 LT Drain Pond 0.31 No No Chan
18 L 349+50 RT Road FlU; Tsmp
Drain Pond 0.04 0.06 0.81 No No Change
19 L 349+50 LT Drain Pond 0.04••' 0.47 No No Chan e
20 L 400+00 Ri Drain Pond 0.58 No No Chan a
21 L 422+00 RT Dnin Pond 0.45 No No Chsn e
22 L 426+03 to 430+50 54" RCP 0.03 0.001 460 30 Yes Revised Orelna La out
23 L 174+07 b 476+41 24" RCP 0.11 0.005 Yea Change to 30" RCP and Revised Drolnage
La t
23A L 195+00 42" RCP 0.01 0.001 160 30 Yec Chan e b 48" RCP Bu PI 20X
24 L 534+20 48" RCP 0.01 0.001 151 30 No No C
25 l 549+60 36" RCP 0.03 0.027 Yes Revised Drains V out
26 L 575+85 LT 24" RCP 0.29 No No Cha s
OTAL S: 0.237 0 0.048 0.058 0.003 2.73 1.881 3431 787 385
SVeam replacement by addition of bottomless culvert NC DEPARTMENT OF TRANSPORTATION
•' Stream that is currently culverted that will be spanned DIVISION OF HIGHWAYS
"' Wetland ad)acent to drained pond-dewatared wetland UNION COUNTY
+) Impact Mcreased WBS - 34485.122 (TIP R-2616)
(•) 8t1 act Decreased Permi[ Orawi Sheet 3 of 66 REVISED 12/14/07