20161268 Ver 6_R-3300B_Modification Request_20220818_20220824

S TATE OF N ORTH C AROLINA
D EPARTMENTOF T RANSPORTATION
R OY C OOPER J.E RIC B OYETTE

G OVERNOR S ECRETARY

August 18, 2022

Wilmington Regulatory Field Office
US Army Corps of Engineers
69 Darlington Avenue
Wilmington, North Carolina 28403

ATTN: Mr. Brad Shaver
NCDOT Coordinator

Dear Sir:

Subject: Request for Modification to Individual Section 404 and Section 401 Water
Quality Certification for the proposed Hampstead Bypass in Pender County.
State Project No. 40237.1.2, TIP No. R-3300B. Debit $570.00 from WBS
40237.1.1.

References: Section 404 Individual Permit signed August 10, 2017 (SAW-2007-1386) for U-
4751 & R-3300
Section 401 Water Quality Certification issued June 5, 2017 (20161268) for U-
4751 & R-3300
DCM Federal Consistency CD17-018

The purpose of this letter is to request modification of the Clean Water Act (CWA) Section 404
Individual Permit (IP) and Section 401 Water Quality Certification for R-3300B to authorize
impacts to facilitate construction of temporary diversion channels at three permit site locations
shown in the project Erosion Control Culvert Construction Phasing plans. The temporary
diversion channels are required to build proposed culverts. The additional impacts summarized
below were inadvertently excluded in the impact summary tables provided in the permit drawings
during the 2020 permit modification request for R-3300B. Alternatives to avoid and minimize
these additional impacts associated with the culvert phasing plans have been considered and are
outlined below.

Impacts to Jurisdictional Resources

Impacts to jurisdictional wetlands and surface waters for R-3300B are summarized below in
Tables 1 - 3. Additional impacts compared to the 2020 permit modification request are shown in
red. No additional permanent impacts are proposed and there are no changes in utility impacts.

Mailing Address: Telephone: [phone] Location:
NC DEPARTMENT OF TRANSPORTATION Fax: [phone] BARBADOS BOULEVARD
DIVISION OF HIGHWAYS Customer Service: 1-877-368-4968 CASTLE HAYNE, NC 28429-5647
5501 BARBADOS BOULEVARD
CASTLE HAYNE, NC 28429-5647
Website: www.ncdot.gov

Table 1. R-3300B Wetland Impacts
c
Permit Map Label in Permanent Temporary Mitigation
HUC
a
Drawing Site FEIS (2014) Type Impacts Impacts Required
Number (2012) (ac.) (ac.)
Non-Riparian 8.568 0 Yes CPF-07
1 IWD
Riparian 0.007 0 Yes CPF-07
2 IWE Non-Riparian 0.163 0 Yes CPF-07
3 LWB Riparian 4.707 0.410 Yes CPF-07
d
3 LWB Riparian 0 0.045 CPF-07
Non-Riparian 1.839 0 Yes CPF-07
4 MWM(2)
Riparian 0.109 0 Yes CPF-07
5 LWD1 Riparian 0.065 0 Yes CPF-07
7 LWD Riparian 5.756 0.130 Yes CPF-07
d
7 LWD Riparian 0 0.016 CPF-07
8 LWF Non-Riparian 0.083 0 Yes CPF-07
9 LWE Non-Riparian 0.128 0 Yes CPF-07
11 LWG Non-Riparian 0.001 0 Yes CPF-07
13 LWI Riparian 2.344 0 Yes CPF-07
d
13 LWI Riparian 0 0.025 CPF-07
15 LWJ Non-Riparian 6.464 0 Yes CPF-07
16 LWL Riparian 0.075 0.106 Yes CPF-07
17 LWK Riparian 0.251 0 Yes CPF-07
18 NWO Non-Riparian 0.849 0 Yes CPF-07
d
19 NWP, PD-29, Non-Riparian 26.965 0 Yes CPF-07
-15, -16, -31, -WOK-02
Non-Riparian 8.078 0 Yes
11, -32, -33,
WOK-02
Riparian 2.756 0 Yes
-35
21 NWQ Riparian 0.448 0 Yes WOK-02
22 IWC Riparian 0.220 0 Yes WOK-02
24 IWA Riparian 0 0.025 Yes WOK-02
25 LWI Riparian 0 0.001 Yes WOK-02
26 NWL Riparian 0.005 0 Yes WOK-02
28 NWM Non-Riparian 0.392 0 Yes WOK-02
29 NWE Non-Riparian 0.019 0 Yes WOK-02
31 NWB Non-Riparian 0.006 0 Yes WOK-02
32 NWN Non-Riparian 0.014 0 Yes WOK-02
bb
2021 Total: 70.312 0.672
New Total:70.312 0.758
a
For permanent impacts
b
Rounded totals are sum of actual impacts.
c
CPF-07 = Cape Fear 8-digit HUB 03030007; WOK-02 = White Oak 8-digit HUC 03020302
d
2022 additional impacts; 0.015 acres of hand clearing converted to temporary excavation;
additional 0.037 acres of hand clearing

Permanent Impacts: No changes to permanent impacts are proposed with this modification.
Proposed permanent impacts for R-3300B include fill, excavation, and mechanized clearing in
wetlands. This includes impacts to 16.743 acres of riparian wetlands and 53.569 acres of non-
riparian wetlands. Proposed permanent impacts to streams are 6,170 linear feet.

Temporary Impacts: There is 0.758 acre of temporary impacts to riparian wetlands for R-3300B.
Proposed temporary impacts to surface waters are 503 linear feet.

Hand Clearing: The hand clearing totals due to the project construction are 0.318 acres.
Table 2. R-3300B Surface Water Impacts
b
Permit Permanent Temporary Permanent Temporary Mitigation
HUC
a
Drawing Waterbody (ft) (ft) (ac.) (ac.) Required
Site
Number
3 stream 1,411 302 0.718 0.046 Yes CPF-07
c
3 stream 0 14 0 0.004 No CPF-07
5 stream 364 0 0.085 0 Yes CPF-07
6 stream 355 31 0.121 0.01 Yes CPF-07
7 stream 2,060 62 0.731 0.015 Yes CPF-07
10 pond 0 0 0.633 0 No CPF-07
12 pond 0 0 0.416 0 No CPF-07
13 stream 348 26 0.085 0.007 Yes CPF-07
14 tributary 0 0 0.150 0.013 No CPF-07
f
19 stream 1257 0 0.398 0 Yes WOK-02
21 stream/pond 97 33 0.014 0.009 Yes WOK-02
22 stream 163 0 0.007 0 Yes WOK-02
23 pond 0 0 0.279 0 No WOK-02
26 stream 0 0 0.028 0 Yes WOK-02
27 pond 0 0 0.117 0.046 No WOK-02
31 stream 115 62 0.032 0.015 Yes WOK-02
b
2021 Total: 6,170 516 3.814 0.161
New Total: 6,170 530 3.814 0.165
a
For permanent impacts
b
CPF-07 = Cape Fear 8-digit HUB 03030007; WOK-02 = White Oak 8-digit HUC 03020302
c
2022 additional impacts

Table 3. Summary of Wetland and Stream Impacts for R-3300B
Permanent Wetland Temporary Wetland
(ac.) (ac.)
Permanent Stream Temporary Stream
Section
(lf.) (lf.)
Riparian Non- Riparian Non-
riparian riparian
B 16.743 53.743 0.758 0 6,170 530

Avoidance and Minimization
Final designs were adjusted to avoid and/or minimize impacts to jurisdictional areas. NCDOT
employs many strategies to avoid and minimize impacts to jurisdictional areas in all its designs.
Many of these strategies have been incorporated into BMP documents that have been reviewed
and approved by the resource agencies and which will be followed throughout construction. All
wetland areas not affected by the project will be protected from unnecessary encroachment.
Individual avoidance and minimization items are as follows:

Permit Site 3
Culvert C08 Î Sta. 19+49 -Y30RPD-
Upstream end of temporary diversion channel was moved approximately 10Ó closer to Culvert
C08 to minimize additional impacts. Approximately 260Ó of downstream diversion channel was
relocated outside of wetlands to avoid additional impacts.

Additional Impacts: Temp. Excavation 0.005 acres (currently permitted as HC)

Culvert C09 Î Sta. 612+13 -L1-
Downstream diversion channel was relocated to minimize additional impacts.

Additional Impacts: Temp. Excavation 0.009 acres (currently permitted as HC)

Culvert C10 Î Sta. 16+22 -Y30RPA-
In an effort to minimize impacts, relocating the diversion channel to the opposite side of the
culvert was considered. However, this change would limit contractor access to the site and require
excessive temporary channel excavation due to topographic constraints. Due to these factors, it
was determined to retain the diversion channel in its original proposed location.

Additional Impacts: Temp. Excavation 0.025 acres
Hand Clearing 0.020 acres
Temp. SW 0.004 acres (14 linear feet)

Permit Site 7

Culvert C11 Î Sta. 660+85 -L1-
Upstream end of temporary diversion channel was moved approximately 32Ó closer to Culvert
C11 to avoid additional impacts. No modifications to downstream end of temporary diversion
channel were possible due to proximity of proposed culvert wingwall.
Additional
Impacts: Temp. Excavation 0.011 acres (0.001 acres in currently permitted HC)
Hand Clearing 0.006 acres

Permit Site 13

Culvert C13 Î Sta. 712+62 -L1-
Upstream end of temporary diversion channel was moved approximately 72Ó closer to Culvert
C13, and downstream end of temporary diversion channel was moved approximately 28Ó closer to
Culvert C13 to minimize additional impacts.
Additional Impacts: Temp. Excavation 0.014 acres
Hand Clearing 0.011 acres
Total Additional Impacts
Temp. Excavation 0.064 acres
Hand Clearing 0.037 acres
Temp. SW 0.004 acres (14 linear feet)

Regulatory Approvals
Section 404: We are, therefore, requesting the modification of the USACE Individual 404 Permit
signed August 10, 2017 (SAW-2007-1386), for the above-described activities.
Section 401: We are hereby requesting a modification to the 401 Water Quality Certification from
the NCDWQ issued June 5, 2017 (20161268). In compliance with Section 143-215.3D(e) of the
NCAC, we will provide $570.00 to act as payment for processing the Section 401 permit
modification.
CAMA: A copy of this application is being provided to the NC Division of Coastal Management
for review in accordance with their Federal Consistency determination
Thank you for your assistance with this project. If you have any questions or need additional
information, please contact Mason Herndon at 910-341-2036 or [e-mail].
Sincerely,
Ejhjubmmz!tjhofe!cz!Nbtpo!
Ifsoepo!
Ebuf;!3133/19/29!19;59;25!
.15(11(
For Chad Kimes, PE, Division 3 Engineer
North Carolina Department of Transportation
ec:
Hannah Sprinkle, NC Division of Water Resources
Kristi Lynn Carpenter, NC Division of Water Resources
Cathy Brittingham, NC Division of Coastal Management
Stephen Lane, NC Division of Coastal Management
Chris Rivenbark, NC Department of Transportation, ECAP
Enclosures

WETLAND AND SURACE WATER IMPACTS SUMMARY
WETLAND IMPACTSSURFACE WATER IMPACTS
HandExisting Existing
PermanentTemp. ExcavationMechanized ClearingPermanent Temp. ChannelChannelNatural
SiteStationStructureFill InFill Inin Clearingin SW SWImpactsImpactsStream
No.(From/To)Size / TypeWetlandsWetlands Wetlandsin Wetlands WetlandsimpactsimpactsPermanentTemp.Design
(ac)(ac)(ac)(ac)(ac)(ac)(ac)(ft)(ft)(ft)
1584+18 to 601+51-L1-ROADWAY FILL
5.4360.0050.699
5+13 to 5+71-Y30RPB-LT
0.0150.016
13+27 to 18+16-Y30RPB-
0.8830.118
19+30 to 26+02-Y30RPC-
1.1900.0250.080
27+65-SR4-
0.004
20+90 to 21+60-SR5-
0.0080.0280.027
43+83 to 44+59-Y30DET-LT
0.0380.003
241+43 to 43+15-Y30-RTROADWAY FILL
0.1410.022
43+21 to 44+49-Y30DET-LT *
3609+50 to 618+70-L1-ROADWAY FILL
1.7540.0020.0890.2010.5260.01041936
611+72 to 611+91-L1-RT1 at 12'x7' RCBC
INLET CHANNEL
0.004
INLET BANK STABILIZATION
33
611+98 to 612+68-L1-LTOUTLET CHANNEL
0.0050.0150.01456
OUTLET BANK STABILIZATION
38
TEMP. DIVERSION CHANNEL**
613+78 to 613+91 -L1- LT
0.009
45+87 to 47+20-Y30-LTROADWAY FILL
0.1800.0350.024
53+88 to 54+12-Y30-LT30" RCP OUTLET DITCH
0.0130.0090.00525
54+51 to 56+42-Y30-LT2 at 66" RCP OUTLET DITCH
0.0820.0190.0029110
56+99 to 57+43-Y30-RTROADWAY FILL
0.008
57+15 to 58+74-Y30DET-
0.1490.0100.006125
13+40 to 19+59-Y30RPA-
1.6940.0450.1880.0940.01144155
TOTALS:11.3320.1490.2851.2620.2260.6530.03410782510
NOTES:
* Site 2 detour impacts included in roadway fill impacts (Total Take).
NC DEPARTMENT OF TRANSPORTATION
** Temporary Excavation Impact for the Diversion Channel
DIVISION OF HIGHWAYS
08-27-2021 REV. 08-08-2022
PENDER COUNTY
R-3300B
40237.2.1
Revised 2018 Feb SHEET 157OF162

WETLAND AND SURACE WATER IMPACTS SUMMARY
WETLAND IMPACTSSURFACE WATER IMPACTS
HandExisting Existing
PermanentTemp. ExcavationMechanized ClearingPermanent Temp. ChannelChannelNatural
SiteStationStructureFill InFill Inin Clearingin SW SWImpactsImpactsStream
No.(From/To)Size / TypeWetlandsWetlands Wetlandsin Wetlands WetlandsimpactsimpactsPermanentTemp.Design
(ac)(ac)(ac)(ac)(ac)(ac)(ac)(ft)(ft)(ft)
1 at 12'x7' RCBC INLET CHANNEL
315+01 to 15+77-Y30RPA-LT
0.0200.0050.0032912
TEMP. DIVERSION CHANNEL*
0.0200.017
OUTLET CHANNEL
25+97 to 26+49-SR6-LT0.0050.00414
OUTLET BANK STABILIZATION
14
TEMP. DIVERSION CHANNEL*
0.0050.0030.00414
18+22 to 20+14-Y30RPD-ROADWAY FILL
0.4700.0640.0210.060243
19+69 to 20+05-Y30RPD-LT1 at 12'x7' RCBC INLET CHANNEL
0.0040.00525
INLET BANK STABILIZATION
25
TEMP. DIVERSION CHANNEL*
0.005
18+99 to 19+24-Y30RPD-RTOUTLET CHANNEL
0.012
OUTLET BANK STABILIZATION
22
4623+04 to 632+02-L1-ROADWAY FILL
1.8120.131
633+70 to 634+01-L1-LT30" RCP PIPE OUTLET
0.005
5638+99 to 642+01-L1-ROADWAY FILL
0.0650.085364
6641+99 to 643+06-L1-ROADWAY FILL
0.1210.01035531
7645+01 to 666+60-L1-ROADWAY FILL
4.8050.2490.3800.6060.012176852
OUTLET CHANNEL
0.062
OUTLET BANK STABILIZATION
34
660+08 to 660+66 -L1- LTTEMP. DIVERSION CHANNEL*
0.0110.006
18+94 to 20+52-Y38-ROADWAY FILL
0.0720.0330.0180.112226
19+83-Y38-RT3 AT 12'x8' RCBC
0.009
19+38 to 20+09-Y38-LTINLET CHANNEL
0.007
19+57 to 20+40Y38-RTOUTLET CHANNEL
0.0620.0080.0130.0033210
TOTALS:7.2240.0000.4970.6130.0471.0020.04131121580
NOTES:
* Temporary Excavation Impact for the Diversion Channel
NC DEPARTMENT OF TRANSPORTATION
DIVISION OF HIGHWAYS
08-27-2021 REV. 08-08-2022
PENDER COUNTY
R-3300B
40237.2.1
Revised 2018 Feb SHEET 158OF162

WETLAND AND SURACE WATER IMPACTS SUMMARY
WETLAND IMPACTSSURFACE WATER IMPACTS
HandExisting Existing
PermanentTemp. ExcavationMechanized ClearingPermanent Temp. ChannelChannelNatural
SiteStationStructureFill InFill Inin Clearingin SW SWImpactsImpactsStream
No.(From/To)Size / TypeWetlandsWetlands Wetlandsin Wetlands WetlandsimpactsimpactsPermanentTemp.Design
(ac)(ac)(ac)(ac)(ac)(ac)(ac)(ft)(ft)(ft)
718+94 to 19+38-Y38-ROADWAY FILL
0.0330.018
11+08 to 12+48-Y38DET-
0.1100.019
8673+01 to 673+68-L1-RTROADWAY FILL
0.0710.012
9673+18 to 689+67-L1-LTROADWAY FILL
0.0870.041
10676+64 to 679+37-L1-DRAIN POND
0.633
11695+36 to 695+47-L1-LTROADWAY FILL
0.001
12700+69 to 702+88-L1-DRAIN POND
0.416
13709+67 to 715+63-L1-ROADWAY FILL
2.1600.1140.063228
2 at 12'x7' RCBC INLET CHANNEL
712+74 to 713+95-L1-RT
0.0240.0150.0220.0047814
TEMP. DIVERSION CHANNEL*
0.0080.007
711+57 to 712+35-L1-LTOUTLET CHANNEL
0.0210.0100.00312
OUTLET STABILIZATION
42
TEMP. DIVERSION CHANNEL*
0.0060.004
14724+44 to 725+96-L1-ROADWAY FILL
0.1000.007
48" RCP OUTLET STABILIZATION
724+48 to 724+73-L1-RT
0.007
17+51 to 18+26-Y31RPC-ROADWAY FILL
0.0350.006
54" RCP OUTLET STABILIZATION
17+57 to 17+87-Y31RPC-
0.008
TOTALS:2.3180.1100.0920.2110.0301.2840.020348260
NOTES:
Site 14: JS Non-Mitigable
NC DEPARTMENT OF TRANSPORTATION
* Temporary Excavation Impact for the Diversion Channel
DIVISION OF HIGHWAYS
08-27-2021 REV. 08-08-2022
PENDER COUNTY
R-3300B
40237.2.1
Revised 2018 Feb SHEET 159OF162

WETLAND AND SURACE WATER IMPACTS SUMMARY
WETLAND IMPACTSSURFACE WATER IMPACTS
HandExisting Existing
PermanentTemp. ExcavationMechanized ClearingPermanent Temp. ChannelChannelNatural
SiteStationStructureFill InFill Inin Clearingin SW SWImpactsImpactsStream
No.(From/To)Size / TypeWetlandsWetlands Wetlandsin Wetlands WetlandsimpactsimpactsPermanentTemp.Design
(ac)(ac)(ac)(ac)(ac)(ac)(ac)(ft)(ft)(ft)
15730+72 to 743+68-L1-ROADWAY FILL
4.8980.0600.228
15+72 to 22+37-SR7-
1.0590.0140.193
15+91 to 16+09-SR7-RT24" RCP OUTLET CHANNEL
0.012
1618+25 to 21+01 -Y31-RTROADWAY FILL
0.0660.009
18+74 to 21+34-Y31DET-
0.0820.024
1718+38 to 19+05-Y31-LTROADWAY FILL
0.0020.007
26+86 to 28+87-SR7-
0.1900.0300.022
1845+47 to 47+66-SR7-ROADWAY FILL
0.2520.043
766+70 to 769+26-L1-
0.5340.020
19769+74 to 854+07-L1-ROADWAY FILL
25.2190.0733.0360.254773
48+38 to 56+57-SR7-
1.0020.188
7+45 to 16+31-Y32RPB1-
2.0750.156
18+01 to 22+37-Y32-
1.0940.0540.0020.144484
29+50 to 39+40-Y32-
4.4550.1100.335
TOTALS:40.8460.0820.3534.2390.0240.3980.000125700
NOTES:
Site 20 Combined with Site 19.
NC DEPARTMENT OF TRANSPORTATION
DIVISION OF HIGHWAYS
08-27-2021
PENDER COUNTY
R-3300B
40237.2.1
Revised 2018 Feb SHEET 160OF162

WETLAND AND SURACE WATER IMPACTS SUMMARY
WETLAND IMPACTSSURFACE WATER IMPACTS
HandExisting Existing
PermanentTemp. ExcavationMechanized ClearingPermanent Temp. ChannelChannelNatural
SiteStationStructureFill InFill Inin Clearingin SW SWImpactsImpactsStream
No.(From/To)Size / TypeWetlandsWetlands Wetlandsin Wetlands WetlandsimpactsimpactsPermanentTemp.Design
(ac)(ac)(ac)(ac)(ac)(ac)(ac)(ft)(ft)(ft)
2123+66 to 25+54-Y19-ROADWAY FILL
0.3720.0200.01497
25+09-Y19-1 AT 8'x6' RCBC
0.013
24+82 to 25+32-Y19-OUTLET CHANNEL
0.0330.0100.00933
2210+17 to 12+28-SR5-ROADWAY FILL
0.2090.0020.0090.007163
23603+49 to 604+94-L1-RTPOND
0.279
2416+83 to 18+03-Y30DET-RTROADWAY FILL
0.0130.012
2546+69 to 46+76-Y31DET-RTROADWAY FILL
0.001
26Y19 50+00 RTChannel Realignment
0.0050.028
27Y19 51+27 to 53+44Roadway Fill
0.1170.046
28L 279+29 to 286+38 RTRoadway Fill
0.3070.085
29L 293+08 to 293+80 RTRoadway Fill
0.0160.003
30L 301+00 RTRoadway Fill
0.0050.001
TOTALS:0.9090.0130.0480.1330.0130.4450.055260330
NOTES:
Site 26: JS Non-Mitigable
NC DEPARTMENT OF TRANSPORTATION
DIVISION OF HIGHWAYS
08-27-2021
PENDER COUNTY
R-3300B
40237.2.1
Revised 2018 Feb SHEET 161OF162

WETLAND AND SURACE WATER IMPACTS SUMMARY
WETLAND IMPACTSSURFACE WATER IMPACTS
HandExisting Existing
PermanentTemp. ExcavationMechanized ClearingPermanent Temp. ChannelChannelNatural
SiteStationStructureFill InFill Inin Clearingin SW SWImpactsImpactsStream
No.(From/To)Size / TypeWetlandsWetlands Wetlandsin Wetlands WetlandsimpactsimpactsPermanentTemp.Design
(ac)(ac)(ac)(ac)(ac)(ac)(ac)(ft)(ft)(ft)
31LLT 320+33 LTChannel Realignment (LT)
0.01547
LLT 320+33 RTCL. B Rip Rap Pad
0.0040.0042020
LLT 320+33 RTChannel Realignment (RT)
0.0130.0114842
3213+45 to 14+89-Y43-LTDITCH
0.014
TOTALS THIS SHEET 0.0000.0000.0000.0140.0000.0320.015115620
TOTAL SHEET 157
11.3320.1490.2851.2620.2260.6530.03410782510
TOTAL SHEET 158
7.2240.0000.4970.6130.0471.0020.04131121580
TOTAL SHEET 159
2.3180.1100.0920.2110.0301.2840.020348260
TOTAL SHEET 160
40.8460.0820.3534.2390.0240.3980.000125700
TOTAL SHEET 1610.9090.0130.0480.1330.0130.4450.055260330
TOTALS:62.6290.3541.2756.4720.3403.8140.16561705300
NOTES:
NC DEPARTMENT OF TRANSPORTATION
DIVISION OF HIGHWAYS
08-27-2021 REV. 08-08-2022
PENDER COUNTY
R-3300B
40237.2.1
Revised 2018 Feb SHEET 162OF162