20200369 Ver 1_Mitigation Information_20220617

From: Davis. Erin B
To: Baker. Caroline D
Subject: FW: [External] SAW-2020-00455 / Wits End Mitigation Site / Construction Update
Date: Friday, June 17, 2022 1:48:27 PM
Attachments: Wits End Bridge Sealed Eno Drawina 6-2-22 - Coov.odf
Laserfiche Upload: Email & Attachment
DWR#: 20200369 v.1
Doc Type: Mitigation Information
From: Ray Holz <[e-mail]>
Sent: Monday, June 13, 2022 12:44 PM
To: Tugwell, Todd J CIV USARMY CESAW (US) <[e-mail]>; Kim Browning
<[e-mail]>; Haywood, Casey M CIV USARMY CESAW (USA)
<[e-mail]>; Davis, Erin B <[e-mail]>; Wilson, Travis W.
<[e-mail]>
Cc: Reid, Matthew <[e-mail]>; Wiesner, Paul <[e-mail]>; Worth
Creech <[e-mail]>; Grant Lewis -Axiom Environmental
([e-mail]) <[e-mail]>
Subject: [External] SAW-2020-00455 / Wits End Mitigation Site / Construction Update
CAUTION: External email. Do not click links or open attachments unless you verify. Send all suspicious email as an
attachment to Report Spam.
IRT Members —
Construction of the stream/wetland components at the Wits End Mitigation Site in Union County
was completed the week of May 16th. This email aims to provide you with an update on three key
items; 1.) Site planting effort, 2.) Modification to the Waxhaw Branch crossing, and 3.) Removal of
the ATV paths and crossings from the Site.
Though site planting and installation of monitoring devices will occur in 2022, IRS has proposed to
DIMS not to begin the monitoring period until 2023, i.e., monitoring year one will be 2023, not 2022.
This will allow IRS to evaluate the survival of planted bare -root planting across the Site and, if
needed, complete a supplemental planting effort during the dormant season of 2022/2023. IRS will
complete a baseline/as-built report for DIMS and the IRT this year. We will provide a supplement
report upon review of vegetation this fall. This report will detail any replanting efforts, if necessary.
In general, the construction of the Site went very well. The stream channel within the former in -line
pond of Waxhaw Branch was completed by excavating out pond bed sediments along the entire belt
width of the channel and using on -site clay to construct the stream bed and banks. Though cracking
of pond bed sediments has occurred, the method of channel construction has ensured the cracking
does not affect the channel. Channel construction within the old pond bed was completed in early
April, and to date, there is zero evidence of pond bed cracking affecting the channel. IRS will continue
to monitor this section during 2022 and provide an update to the IRT in the supplemental baseline
report, which will be completed in Q4-2022.

If anyone has any questions or wants to set up a call to discuss any aspect detailed below, don't
hesitate to contact me directly.
Sincerely,
Raymond H.
Site Planting Effort
Planting of the Site occurred in stages as construction was completed. We were very fortunate with
good rain and cooler temperatures during the later planting efforts. Before the May planting efforts,
bare -roots were kept in a refrigerated truck to prevent budburst, and live -stakes were kept
submerged in water. Now, three weeks after the last round of bare -root planting occurred, saplings
& live -stake seem to of established well.
Wits End Planting Dates:
Type / Date
Planting Location
Notes
Bare -root
- UT-1, UT-2, Waxhaw Branch (within old
Temperature Range: 60°F - 80°F
Thursday, April 7th
pond bed down to the confluence with UT-
Week of Precipitation: +/- 1.46 inches.
3), UT-4 to the Waxhaw Branch floodplain.
- UT-3, from its confluence of Waxhaw
Branch to where UT-3 enters the Site, and
Temperature Range: 62°F - 75°F.
the origin point of UT-3A
- Streamside and wetland areas along
The previous night, the Site received
Tuesday, May 24th
Waxhaw Branch starting at the confluence
+/- 0.64 inches of rain, and a light
of UT3 (the forested portion of Waxhaw
drizzle occurred during the morning of
Branch) down to Snyder Store Road (Site
May 24th.
outfall).
Live -stakes
- Waxhaw Branch to the confluence with UT -
Monday, March 215t
2, UT-1, UT-2, UT-4 down to Waxhaw
Temperature Range: 38°F - 71°F
Week of Precipitation: +/- 0.85 inches.
Branch floodplain.
- Marsh treatment areas, Waxhaw Branch
Thursday, April 7th
from UT-2 confluence down to UT-3
Temperature Range: 60°F-80°F
Week of Precipitation: +/- 1.46 inches.
confluence
- UT-3/3A to its confluence with Waxhaw
Planting occurred in the morning, with
Sunday, May 15th
Branch and down to Snyder Store Road
temperatures ranging from 66°F to
82°F. +/- 0.25 inches of rain fell that
(Site outfall).
afternoon after planting.
Waxhaw Branch Crossing Modification
Due to inflation and general supply/availability of the engineered Waxhaw Branch aluminum, wing -
walled, box culvert, it became clear in late April we would have to modify the crossing from the
aluminum box culvert to a spanned bridge. RS worked with Sungate (engineer of record) and the civil

engineering firm CGM3 to design a bridge crossing to meet the Union County FEMA requirements.
Those requirements mandated that the bridge allow a 100-year storm event to pass without
impounding water and emergency vehicle access during such an event. In an abundance of caution,
IRS expanded the bridge's capacity by adding four 36-inch and two 24-inch floodplain pipes to the
crossing. All floodplain pipes and bridge infrastructure are within the 60-foot easement break. A
sealed engineering drawing is attached, along with an illustrative mock -photo diagram.
Removal of ATV Paths/Crossings
Because the Conservation Easement bisected portions of the fee -simple property, legally, IRS had to
provide access to the isolated portions. As detailed in the Mitigation Plan, IRS accomplished this by
adding internal ATV crossings/trails. Over the past six months, IRS was able to sell the isolated
portions of the parcel to adjacent neighbors. As a result, the ATV trails and crossings are no longer
necessary since these portions of the property are connected to neighbors' existing parcels. Thus, IRS
did no construct the ATV crossings/trails, and we are currently working with Blane Rice at the State
Property Office to have the trails/crossings removed from the conservation easement. This effort will
be fully detailed in the Baseline Monitoring Document and As -Built Survey/Recorded Drawings.
Raymond J. Holz I Restoration Systems, LLC
1101 Haynes St. Suite 211 1 Raleigh, NC 27604
tel:[phone] cell:919.604.9314 1 fax:[phone]
email: [e-mail]

nc-
L
c
(10
3
x
x
2-
0 O
tLo N
'^
N OQ
O L
U O
b4
L '�
m
L
N
ci 7
a s
N y0
O
0
O
aU O
H
UO
OD
LL.J
Hm
V)
W W W =
�!1
N n
V' ^
/
O
U fJJ
Y�
00< F
N
O
U
W QQN F
0 5
dF
Wg
U Ym
N
�rcrco a
��a
go-
W0
z ~o m'
F Z.
0 mZ Z
U U)02 m
Wa
0. 0 VU
Oa Q WO
In 3
3 0 •`+�
WXa dV
u w
X m
\ I
z a&zzs
O�1oZLV on
U M 7 ik/
'
II
II
II
II
II
II
II
II
�
II
i II
II
II
II
II
II
II
�
o
II
0
o
H
W p
O
ro
U
I
I
x
awa
mp
II
'10
I
I
)
0o �
A
I
I
I
I
Zrti
qa0
t-
o O
ai
ajAY
N
.i' F y `✓'•'
>
0
O CL u .Q
O c
s! ry
�O a
0
O =
U � u
JA

9czt-"�-tOL 3NOHd
vmnouv3
6109Z ON JIVa N ONI
3NVI QNVJ ONINd fc
3SN Oil
n�
0IIdC'9NtIR8z3a3N ON3
v�4
CM MIA
O
CL
LLJ
z0
U�
Ui
o
a
tr
08
a s ---� 031d SI 3Sn G3ZINOHinVNn >JO InNn AMVI*83INION3 ]Hi iG (MW W HOI�Ad3MV SMV2I 3 3HI(D