20201544 Ver 1_Duplin_SR1975_BurialWaiverRequest_20201125

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STATE OF NORTH CAROLINA
DEPARTMENT OF TRANSPORTATION
ROY COOPER J.ERIC BOYETTE
GOVERNOR SECRETARY
Brad Shaver,NCDOT Coordinator Joanne Steenhuis,NCDOT Coordinator
Wilmington Regulatory Field Office NC Department of Environmental Quality
US Army Corps of Engineers Division of Water Resources
69 Darlington Avenue 127 Cardinal Drive Ext.
Wilmington,NC 28403 Wilmington,NC 28405
Date:November 25,2020
Subject: Duplin County SR 1975 Lighthouse Road Burial Waiver Request
WBS#: 3B.203111
(DWR Permit Fee: $240)
Dear Mr. Shaver and Ms. Steenhuis:
The North Carolina Department of Transportation plans to replace existing(2) 36" in diameter by
60'in length CMPs at location Lat: 34.744614,Long: -77.796843 on SR 1975 Lighthouse Road
where it crosses a UT to Angola Swamp(C;Sw) approximately 0.08 miles NW of SR 1977 Angola
Bay Road. The proposed replacement structure is a 95"x 67"in diameter by 56' in length CAAP
w/HW.NCDOT would like to request a waiver from the depth specifications of the regional
conditions 3.6.1 of the Nationwide Permit 3 and the corresponding General Condition 11 of the
Water Quality General Certification No. 4132.Due to the existing geomorphologic fall of the
stream channel,burying both of the inverts of the new CAP 1' below the natural streambed
elevation would result in a greater than 4%pipe slope,causing a high flow erodible condition.
NCDOT plans to bury the inlet 1' and install the pipe on a 2.5 % slope which would set the outlet
approximately at grade with the natural stream bed downstream of the existing blowhole.
Approximately 5 LF of Class II riprap grouted with flowable fill is proposed to be placed in the
downstream channel to prevent additional scour.
By copy of this letter and enclosures,NCDOT is requesting issuance of Nationwide 3 approval
from the US Army Corps of Engineers and 401 General Certification#4132 approval from the
Division of Water Resources (DWR).A method of debiting$240 to process the General
Certification request has been provided as noted in the subject line of this application.
If you have any questions or need any additional information,please contact me at(910) 599-1184
or at [e-mail].
Sincerely,
Sean Farrell
NCDOT Division 3
Environmental Specialist
Mailing Address:
NC DEPARTMENT OF TRANSPORTATION
DIVISION OF HIGHWAYS
5501 BARBADOS BOULEVARD
CASTLE HAYNE,NC 28429-5647

SR 1975 Lighthouse Road
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11/25/2020, 1:02:03 PM 1:18,056
0 0.13 0.25 0.5 mi
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CPF
Copyright @ 2013 National Geographic Society,i-cubed
NCDENR Div.Water Resources
NCDENR-Division of Water Resources I Copyright:©2013 National Geographic Society,i-cubed

D , DL \ COU \ Y SR 975 L GHT - O ,_, SE ROAD ( 3 / 07zz 6 z - 77 . 7968z 3 ) LEGEND9 PROPOSED PIPE
DRODOS = D P DE R = DLACE vE \ T - WBS \ O . 38 . 203 1 1
EXISTING PIPE
STREAMBED PROFILE
SITE > DE D R O F LE
TEMP. SHEETPILE
98 98
97 97
SCALE 'ROPOSED 95' X 67' CAAP W/ HW
I"=2' VERTICAL
96 I"=20' HORIZONTAL 96 FLOW DIRECTION
95 -- ---- 95
NOTES
94 I 9q CENTERLINE OF ROAD = 100.00
93 I 93
92 ` ___-_---- 92
91 92.58 91
EXISTING OUTLET INVERT = 92.29
90 90
92.11
Sr. .025 � q
89 91.88 a 89
/ 89.45 DRAWN BY: S. FARRELL
92.32 - /
88 92.66 \89.46 88 DATE: 11/25/2020
92.3 i
87 18: / 89.59 87
EXISTING INLET INVERT = 91.74 a i PERMIT DRAWING: 10F I
86 PROPOSED INLET INVERT : 90.8 86
\889.4
8e14 CHECKED BY: M. HERNDON
85 PROPOSED OUTLET INVERT : 89.5 EXISTING 10' BLOWHOLE = 86.44 85 PROJECT DESCRIPTION:
ROPOSED 5LF CLASS II RIPRAP FLUME REPLACE EXISTING (2) 36" X 60' CMPs
GROUTED W/ FLOWABLE FILL W/ NEW 95" X 67" X 54' CAAP
COUNTY: DUPLIN
00 80 60 40 20 0 20 / 0 60 80 1 00 "0 NON rilt
en

WETLAND PERMIT IMPACT SUMMARY
WETLAND IMPACTS SURFACE WATER IMPACTS
Hand Existing Existing
Permanent Temp. Excavation Mechanized Clearing Permanent Temp. Channel Channel
Site Station Structure Fill In Fill In in Clearing in SW SW Impacts Impacts Bank
No. (From/To) Size/Type Wetlands Wetlands Wetlands in Wetlands Wetlands impacts impacts Permanent Temp. Stabilization
(ac) (ac) (ac) (ac) (ac) (ac) (ac) (ft) (ft) (ft)
Site 1 N/A 5
Temporary dewatering
Site 1 N/A 5
Riprap flume
TOTALS*: I 5 5
"Rounded totals are sum of actual impacts
NOTES:
NC DEPARTMENT OF TRANSPORTATION
DIVISION OF HIGHWAYS
11/25/2020
DUPLIN COUNTY
3B.203111
Revsed 2013 10 24 SHEET 1 OF 1

Farrell, Sean C
From: [e-mail]
Sent: Sunday, November 22, 2020 12:00 AM
To: Farrell, Sean C
Cc: Steenhuis, Joanne
Subject: Pre-Filing Meeting is not needed for SR 1975 Lighthouse Road Pipe Burial Waiver
Request - 20201544 Ver 1
The North Carolina Division of Water Resources has received the Pre-Filing Meeting Request Form for SR 1975
Lighthouse Road Pipe Burial Waiver Request that you submitted on 10/22/2020 3:22 PM.The ID number for that project
is 20201544,Version 1.
It has been decided that no meeting is needed for this project.
Project file link: https://edocs.deq.nc.gov/WaterResources/Browse.aspx?dbid=0&startid=1339250
When you submit your application please upload a copy of the attached document in this email.
This email was automatically generated by Laserfiche workflow. Please do not respond to this email address, as
responses are not monitored.
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