20240435 Ver 1_20240435 Ver 1_Calebs Creek Add Info Response_20241022

TO: Sue Homewood, NCDEQ
Krysta Stygar — USACE
FROM: Jeff Harbour — Terracon
Charles Pearman - SEH
Kenton Brose, PE — SEH
CC: BOMA North Carolina, LLC
Turner Perrow Jr. PE — SEH
Samantha Dailey — USACE
DATE: October 22, 2024
RE: RE: Request for Additional Information
Caleb's Creek Subdivision
NCDWR: 20240435
USACE ID: SAW-2015-01697
The Division previously requested additional information for the purpose of Impact T34 shown on
Exhibit 5. The response submitted on September 20, 2024, indicates that impact T34 is "caused
by the fill associated with the roadway crossing, not general development fill". Please further
clarify this statement since what appears to be the roadway fill line (highlighted in image below)
(Image not included in response draft) on Exhibit 5 only represents a small portion of the Impact
T34.
The line referenced by the Division is an easement line for dry utilities not a roadway fill line.
Exhibit 5 has been updated to show proposed contours associated with the crossing. The impact
to T34 has been reduced in this submittal from 100 LF to 47 LF but does extend beyond the
Right -of -Way due to grading to install culverts and achieve required roadway elevation. Exhibit 5
and the table on Exhibit 3C have been updated to reflect the smaller impact.
IMPORTANT NOTE: STREAM IMPACT T34 HAS BEEN REDUCED FROM 100 LF TO 47 LF
2. The Division previously requested information regarding the purpose of Impact W4. The response
submitted on September 20, 2024, indicates that impact W4 is "necessary for a crossing required
to access PA-106 and is required by Town ordinance." This statement is insufficient to justify the
impacts to the wetlands.
Pursuant to 15A NCAC 02H .01305(b) "In assessing whether the proposed activity will comply
with water quality standards, the Division shall evaluate if the proposed activity: (1) has avoided
and minimized impacts to surface water and wetlands....". If the locations or widths of roads are
dictated by local government requirements or transportation plans, then the avoidance and
minimization analysis must be based on traffic analysis or planned roadway infrastructure layouts.
DWR understands that many local governments require developers to design and construct
roadways identified on the transportation plans, however DWR will evaluate the justifications for
location and widths of these roads as if they were being proposed/designed by the local
government. A statement that the location or design is required by the local government will not
be considered a sufficient avoidance and minimization justification.
Engineers I Architects I Planners I Scientists
ShortElliott Hendrickson Inc., 400 Locust Avenue, Suite 2, Charlottesville, VA 22902-4858
434.202.3780 888.908.8166 fax I sehinc.com
SEH is 100%employee-owned Affirmative Action —Equal Opportunity Employer

Memorandum
October 22, 2024
Page 2
The location of the crossing was determined based on the narrowest portion of the wetlands
W43. Width of the crossing was determined by the minimum allowed roadway permitted by the
Town. These decisions were made to minimize the impacts to the wetlands in that area. Exhibit
3M and 3N have been updated to show the crossing in a location that will have the least amount
of impact. The temporary impact occurring at this location has been reduced from 0.55 ac to 0.22
acre by shifting to a narrower wetland crossing location.
IMPORTANT NOTE: IMPACT W4 (TEMP) HAS BEEN REDUCED FROM 0.55 AC TO 0.22 AC
The Division previously requested information regarding the possible indirect impacts to features
that have the potential to cause a violation of water quality standards. The response submitted on
September 20, 2024, indicates that an SCM will be located adjacent to features T10 and W12
that will provide hydrology to these features to prevent indirect impacts. It is unclear that the
topography within this location will allow for discharge from the SCM to the top of feature T10.
Please clarify this by showing the proposed location of the outlet of the SCM based on planned
elevations within the area. If the outlet of the SCM will is not proposed at the top of feature T10,
please include the area above the outlet as indirect impacts on update impact tables/maps and
adjust the proposed mitigation amounts accordingly.
L-Anibit 3F uUU1I UPUQIGU LU J1 IUVV UANDLII ly ILours and proposed stormwater management
layout. The proposed stormwater SCM can be constructed at an elevation that will allow
discharge to the most upstream end of T10 as shown in the exhibit.
The revisions noted in this submittal resulted in a reduction of stream impact by 53 linear feet and
temporary wetland impact by .33 acre at Wetland Impact W4 location
Calebs Creek Impacts (October 22, 2024)
• 895 linear feet of stream loss
0 695 LF of perennial / high intermittent 2:1 mitigation proposed (1,390 LF)
0 40 LF of medium intermittent 1.5:1 mitigation proposed (105 LF)
0 160 LF of low intermittent 1:1 mitigation proposed
• 0.49 acre of wetland fill @ 2:1 ratio = 0.98 acre of mitigation
• 0.65 acre of conversion @ 1:1 ratio = 0.65 acre of mitigation
Attachments:
Exhibit 3C Impact Exhibit
Exhibit 3F Impact Exhibit
Exhibit 3N Impact Exhibit
Exhibit 3M Impact Exhibit
Exhibit 5 - Utility Crossing (U-2 - Phase 1)

� ,s
r T6
W5)
FUTURE STORMWATER BMP
W6
I \ - IMPACT W1: 0.13 AC
T8 3C
i IMPACT T34: 47 LF, 705 SF
r SEE CROSSING EXHIBIT 5
IMPACT T34A: 60 LF, 300 SF W7
SEE CROSSING EXHIBIT 5
T34 '
W8
FUTURE STORMWATER BMP
> ` IMPACT W2: 0.06 AC
SEE CROSSING EXHIBIT 5
\� ) T33
\ IMPACT W3: 0.11 AC
SEE CROSSING EXHIBIT 6
T35
IMPACT T4 40 LF 280 SF I P1
SEE CROSSING EXHIBIT 6
SURFACE WATER IMPACT: 0.17 AC
SEE CROSSING EXHIBIT 6
�Z�-*'�// T36
L-
GRID BOUNDARY
- - -
100 YEAR FLOOD PLAIN
_
SURFACE WATER
_
IMPACTED SURFACE WATER
WETLANDS
IMPACTED WETLANDS
IMPACTED STREAMS
STREAM
P1 � I
mrmm"w
T
N
200 0
200
400
scale 100
feet
AREA 3C IMPACTS
STREAM
WETLAND
IMPACTED STREAM
OR WETLAND NAME
IMPACT
NAME
LENGTH
(LF)
AREA
(SF)
AREA
(ACRES)
PHASE
W6
W1
N/A
N/A
0.13
1
W8
W2
N/A
N/A
0.06
1
W5
W3
N/A
N/A
0.11
1
T8
T4
40
280
N/A
1
T34
T34
47
705
N/A
1
T34
T34A
60
300
N/A
1
TOTAL
147
1,285
0.30
CALEB'S CREEK
DATE: WETLANDS & STREAMS
SEW 10/15/2024 ROAD IMPACT DETAILS
L"N"N'"", KERNERSVILLE, FORSYTH COUNTY, NC
N
IMPACT •
EXHIBIT
3 C 200 0 200 400
scale 100 feet

A
7
1
-4 ^
C
GRID BOUNDARY
- - -
100 YEAR FLOOD PLAIN
_
SURFACE WATER
WETLANDS
IMPACTED WETLANDS
IMPACTED STREAMS
STREAM
DATE:
A SEH 10/15/2024
•1'
f
T25
W41'
r*1
W47
r - s j T14�
r . '
W47
Ir
• W52 00 .... ... .... ....... ...
-
T14 : : :Y -
------------- -----------
----........ ............
- .... ---
TEMPORARY IMPACT FOR
PYLON BRIDGE CONSTRUCTION -
...........
-.• ...•..•.....•..• 34'
IMPACT W4: 0.22 AC ::
■
EXISTING UTILITY EASEMENT
........................
W43 ... ...... .
W48.. . .......................... . . . .
ir
T25
AREA 3M IMPACTS
STREAM
WETLAND
IMPACTED STREAM
OR WETLAND NAME
IMPACT
NAME
LENGTH
(LF)
AREA
(SF)
AREA
(ACRES)
PHASE
W43
W4
N/A
N/A
0.22
2
TOTAL
0.22
CALEB'S CREEK
WETLANDS & STREAMS
ROAD IMPACT DETAILS
KERNERSVILLE, FORSYTH COUNTY, NC
N
IMPACT
EXHIBIT
3 M 200 0 200 400
scale 100 feet

.... I
T22
W42
�- -_- W43�
T25 W46
W41
L................
.. 7
................ W44 W45)
:
1� r
\ -
W47� .........
/� .. :.':.'..'..'..'
l ::. :::::::::. .
�® T38
EXISTING UTILITY EASEMENT
------------
t i
- % T39D
1
...................
1 �\
.. \`
.........................
.........................
�:: W43 W49 T43
� - - ........ T41 .-.r
... ....... :: �..'..'..'..'..'...'..':.'::: .
.'•• •:• / ' TOR o
C GRID BOUNDARY
- - -
100 YEAR FLOOD PLAIN
_
SURFACE WATER
WETLANDS
IMPACTED WETLANDS
IMPACTED STREAMS
STREAM
CALEB'S CREEK
DATE: WETLANDS & STREAMS
iEHof 10/15/2024 ROAD IMPACT DETAILS
-NIC.z z KERNERSVILLE, FORSYTH COUNTY, NC
T42
IMPACT
EXHIBIT
3N
N
200
0
200
400
scale 100
feet