20181694 Ver 2_DudleyPond_Temporary Wetlands Addendum

Wildlands Engineering, Inc.  phone [phone]  312 West Millbrook Road, Suite 225  Raleigh, NC 27609

October 31, 2023

Maria Polizzi
NCDEQ Division of Water Resources
401 & Buffer Permitting Branch
512 N. Salisbury St., Archdale Building 942-H
Raleigh, NC 27604

Subject: USACE Action ID No. SAW-2018-02160
DWR # 18-1694
Dudley Mill Pond Mitigation Site
Monitoring Year 2 Repairs – Temporary Impacts

Dear Ms. Polizzi,
This letter is in reference to the Dudley Mill Pond Mitigation Site (Site) and the ePCN submitted on
October 24, 2023 regarding necessary stream repairs. The purpose of this letter is to provide
clarification on temporary impacts associated with the proposed repairs.
Temporary wetland impacts are necessary for equipment access to the repair areas and for additional
excavation of the streambank to rebury the damaged brush toes. Access to repair areas will take the
shortest logistically feasible route through the easement and utilize existing earthen access roads
outside of the easement when possible to avoid unnecessary wetland impacts. All temporary wetland
impacts will be revegetated with a native riparian seed mix and stabilized. Additionally, wetland areas
will be replanted with native species included in the Approved Mitigation Plan Planting List.

Temporary stream impacts will be associated with a temporary stream crossing needed for equipment
to access the streambank where the brush toes are located. An existing riffle in the stream channel will
be used as a temporary crossing while the pump-around station is operating so both repair areas can be
accessed and the need to construct a separate temporary crossing can be avoided. The stream will be
restored to its pre-construction profile following completion of the work and any displaced or damaged
riffle material will be replaced. The streambanks will be revegetated and stabilized.

Temporary stream and wetland impacts are detailed below in Tables 1 and 2. Permanent stream
impacts reported in the PCN submitted on 10/24/2023 are not included.

Table 1. Temporary Wetland Impacts
Site Reason for Impact Impact
Type
Type of
Wetland
Wetland
Name Forested Type of
Jurisdiction
Impact
Area (ac)
W1 Temporary Access Route T Riverine Swamp
Forest H Yes Both 0.155
W2 Bank Stabilization T Riverine Swamp
Forest H Yes Both 0.059
Total Temporary Impacts 0.214

Wildlands Engineering, Inc.  phone [phone]  312 West Millbrook Road, Suite 225  Raleigh, NC 27609

Table 2. Temporary Stream Impacts
Site Reason for Impact Impact
Type Type of Impact Stream
Name
Stream
Type
Type of
Jurisdiction
Stream
Width
Impact
Length
S2 Temporary Crossing T Workpad/Causeway Cedar
Creek Perennial Both 20 48
Total Temporary Impacts 48

Please contact me at 919-851-9986 x106 if you have any questions.

Thank you,

Tasha King
Environmental Scientist

GWG 4
GWG 3
GWG 2
XS
5
X
S
7
X
S
9
XS10
XS8
X
S
6
3
1
2
+
0
0
12
6
+
0
0
128+00
1
3
0
+
0
0
1
3
2
+
0
0
134+00
1
3
6
+
0
0
138+00
1
4
0
+
0
0
142+
0
0
1
4
4
+
0
0
146+
0
0
148+00
150+00
T2
Ced
a
r

C
r
e
e
k
Reach 1
Reach 2
Reach 3
S1 - Brush toe Repair
Approximately 94 ft
S1 - Brush toe Repair
Approximately 60 ft
W1 - Temporary
Access
W2 - Bank
Stabilization
W2 - Bank
Stabilization
Conservation Easement
Existing Wetlands
Temporary Wetland Impact
Unpaved Access Road
Stream Restoration
Non-Project/Not for Credit Stream
Permanent Stream Impact
Temporary Stream Impact
As-Built Top of Bank
Structure
Cross-Section (XS)
Groundwater Well Gauge (GWG) - Not for Credit
Crest Gauge
Barotroll
Reach Break
Property Access Point
World Transportation
0 150 300 Feet
2021 Aerial Photography
Figure 3. Impact Map
Dudley Mill Pond Mitigation Site
USACE Action ID No. 2018-02160
Monitoring Year 2 - 2023
Cumberland County, NC