SW6110103_Soils/Geotechnical Report_20221220 (2)

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JSOC - Microgrid
Project number: 60652522
Attachment H — Geotechnical SHWT and Infiltration Report
AECOM
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.a ierracon
October 7, 2022
AECOM Inc.
10 S Jefferson Street, Suite 1600
Roanoke, Virginia 24011
Attn: Mr. Ian Camper, PE - Associate Vice President
P: [phone]
E: [e-mail]
Re: Seasonal High Water Table Report
JSOC Microgrid
Hurst Drive
Fort Bragg, North Carolina
Terracon Project No. 70225203
Dear Mr. Camper:
2401 Brentwood Road, Suite 107
Raleigh, North Carolina 27604
P [phone]
F [phone]
North Carolina Registered F-0869
Terracon.com
We have completed Seasonal High Water Table services for the above referenced project. This study
was performed in accordance with Terracon Proposal No. P70225203 dated September 1, 2022. This
report presents the findings of the field exploration of the general project site for Seasonal High Water
Table (SHWT) testing.
We appreciate the opportunity to be of service to you on this project. If you have any questions concerning
this report or if we may be of further service, please contact us.
Sincerely,
Terracon Consultants, Inc.
Seth A. Bowman
Staff Engineer
Andrew A. Nash, PE
Department Manager

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ATTACHMENTS
Contents:
Site Location and Exploration Plans
Seasonal High -Water Table (SHWT) Assessment and Saturated
Hydraulic Conductivity (Ksat) Testing
Explore with us
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;ITF I OCATION PI AP MNPIWA
rerracon
JSOC Microgrid SHT Fort Bragg, North Carolina W
October 7, 2022 Terracon Report No. 70225203
do
Ie Air Force Oase Pope AFB Sgis
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Womack ArMy � 2500feet
Medical CenWr
,GRAM IS FOR GENERAL LOCATION ONLY, AND IS NOT INTENDED FOR CONSTRUCTION PURPOSES MAP PROVIDED BY MICROSOFT BING MAPS
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FXPI ORATION 01 AN
JSOC Microgrid SHWT Fort Bragg, North Carolina
October 7, 2022 Terracon Report No. 70225203
F
Wrerracon
was
i
-.1r
Approximate Test Location M
e�sr�
IDIAGRAM IS FOR GENERAL LOCATION ONLY, AND IS NOT INTENDED FOR CONSTRUCTION PURPOSES MAP PROVIDED BY MICROSOFT BING MAPS
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Engineers and Sail Scientists
Agri -Waste Technology, Inc.
501 North Salem Street
Sulte 203
Apex, NC 27502
919-859-0669
www,agriwa5te.com
Seasonal High -Water Table (SHWT) Assessment and Saturated Hydraulic
Conductivity (Ksat) Testing
JSOC Microgrid Project
Hurst Drive, Fort Bragg, Fayetteville, NC (Cumberland County)
PREPARED FOR: Seth Bowman, Terracon Consultants, Inc. (Client)
PREPARED BY: Jeff Vaughan
DATE: October 6, 2022
A seasonal high-water table (SHWT) assessment and saturated hydraulic conductivity
(Ksat) testing was conducted for the proposed project in Fayetteville, NC, on October 3
and 6, 2022. Jeff Vaughan, Bailey Stiles, and McLean Davis of Agri -Waste Technology,
Inc. (AWT) conducted the evaluation. Site reference map (provided by Terracon
Consultants, Inc.) is in Attachment 1. The location for the assessment and testing was
marked in the field prior to the evaluation.
The predominant soil type mapped at the assessment location is Wagram-Urban land
complex (may symbol WgB). The Cumberland County Soil Survey indicates that the
SHWT for this soil type is greater than 6 feet below the soil surface (Attachment 2).
A soil boring was advanced at the marked location on October 6, 2022. The soil boring
advanced by AWT personnel indicated no SHWT within 156 inches (13ft.) of the soil
surface for the soil boring as shown in the Table below. The soil boring description is
located in Attachment 3.
A Ksat test was also conducted at the location using an Aardvark Permeameter. The test
occurred for approximately 60 minutes with 15 minutes of equilibration and 45 minutes
of measurements. The measured permeability rate was 46.77 inches/hour. The detailed
information for the Ksat test is in Attachment 4.
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Picture 3. Ksat Test Borehole Close -Up.
We appreciate the opportunity to assist you in this matter. Please contact us with any
questions, concerns, or comments.
3
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ATTACHMENT 1: Property Reference Map and Soils Map
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Current Time: 10/6/2022 5:43 PM
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THE COUNTY OF CUMBERLAND AND ITS GIs DEPARTMENT
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DISCLAIMS ACCOUNTABILITY FOR THIS PRODUCT AND MAKES NO
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WARRANTY EXPRESSED OR IMPLIED CONCERNING THE ACCURACY
THEREOF. RESPONSIBILITY FOR INTERPRETATION OF THIS
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PRODUCT LIES WITH THE USER.
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ATTACHMENT 2: Soil Survey Information
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153
Cumberland and Hoke Counties, North Carolina
TABLE 16.--SOIL AND WATER FEATURES --Continued
------ ------ _—--
PToo_3inC_ Aigl"i�water`�a6le`-` I Aisk`o�-corrosion_
--_.--------- ---------------
Soil name and ;Hydrologic;
; :
map symbol ;
group
; Frequency : Duration ; Months
; Depth ; Kind ;Months ;Uncoated ;Concrete
: : steel
---�--
--------
------ --_-_---
Ft T I I I
I
Pt*: I
I I I
I I I
I I I I I
I I I I 1
Pits.
Tarboro----------:
A
:Rare--------: --- : ---
: >6.0 ; --- ; --- :Low ------ :Moderate.
I
Ra---------------- :***B/D
I I I
:None--------: --- ---
I I I I I
: 0-1.0:Apparent;Nov-Apr:High ----- :High.
Rains I
I I I
I I I I I
I
Ro*:
I I I
I I I I I
Roanoke ---------- :
D
:Rare--------i --- : ---
: 0-1.0:Apparent;Nov-May!High ----- !High.
Wahee------------i
I
D
!Rare--------: --- ---
I I I
;0.5-1.5!Apparent;Dec-Mar!High ----- :High.
I I I I 1
Ru*:
Roanoke ---------- 1
I
D
;Rare--------: --- ; ---
I I I
; 0-1.O:Apparent:Nov-May:High ----- :High.
I I I
I
Urban land.
I I I
I I I I I
St ---------------- :
C
!None--------: --- ; ---
:1.0-2.5:Apparent;Dec-Apr:High ----- !High.
Stallings
I
I I I
I I I 1
TaB---------------:
A
!Rare--------: --- ---
>6.0 --- --- !Low ------ !Moderate.
Tarboro
TR*:
Torhunta---------i
C
:None -------- : --- : ---
:0.5-1.5:Apparent:Dec-May:High ----- !High.
Lynn Haven ------- :***B/D
:None -------- I --- : ---
: 0-1.O:Apparent:Jun-Feb:High ----- :High.
Ud.
Udorthents
Ur*.
Urban land
VaB, VaD----------:
C
!None -------- : --- : ---
: >6.0 : --- --- :Low ------ :High.
Vaucluse
VgE*:
Vaucluse---------:
C
:None -------- ! --- ; ---
! >6.0 ! --- : --- :Low ------ ;High.
Gilead ----------- :
C
:None--------: --- : ---
:1.5-2.5:Perched :Jan-Mar:Moderate :High.
I
Wa---------------I
A
I I 1
;None--------
I I I I I
>6.0 --- � ow------ ,High.
Wag ram
WgB*:
Wagram-----------:
I
A
:None -------- ! --- ; ---
I I I
: >6.0 : --- ; --- :Low ------ :High.
I I I 1
Urban land.
WmB---------------:
B
!Rare--------: --- : ---
: >6.0 : --- : --- :Moderate :High.
Wickham
WnB* •
Wickham----------:
B
:Rare -------- I --- : ---
: >6.0 : --- : --- :Moderate :High.
Urban land.
Wo---------------- !***B/D
;None--------: --- : ---
:0.5-1.0!Apparent:Dec-May:High ----- :High.
Woodington ;
; ; ;
: ; : : :
* See description of the map unit for composition and behavior characteristics of the map unit.
** A plus sign under "Depth to high water table" indicates that the water table is above the surface of
the soil.
*** Soils which have a seasonal high water table but which can be drained. The first letter refers to
the drained condition; the second to the undrained condition.
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ATTACHMENT 3: Soil Boring Logs
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Property ID#:
Property Recorded:
County: Cumberland
SOIL/SITE EVALUATION
FOR
ON -SITE WASTEWATER SYSTEM
Applicant: Mr. Seth Bowman Buyer:_ Agent: X Phone: [phone]
Address: Terracon Date Evaluated: 10/3/22 & 10/6/22
2401 Brentwood Road Proposed Facility: Commercial
Raleigh, NC 27604 Property Size:
Location Site: Hurst Drive, Fort Bragg, Fayetteville, NC
Water Supply: On Site Well_ Comm. Well_ Public X Other_ Evaluation Method: Auger Boring X Pit -
Cut -
TYPICAL PROFILE
Horizon/
Depth (TN)
Matrix
Mottles
Mottle
Abundance/ Contrast
(a)(1)
Texture
(a)(2)
Structure
(a)(3)
Minerology
Consistence
Wet
Consistence
Moist
A 0-6"
IOYR 3/3
None
None
S
GR
NEXP
NS, NP
Vfr
Btl 6-26"
10YR 5/8
None
None
S-LS
wSBK
SEXP
SS, SP
Vfr
Bt2 26-45"
7.5YR 5/8
None
None
S-LS
wSBK
SEXP
SS, SP
Vfr
BC 45-64"
IOYR 6/8
1, in, u
10YR 8/1
S
wSBK
SEXP
SS, SP
Vfr
C1 64-111"
IOYR 8/1
1, in, D
7.5YR 5/8
S
SG
NEXP
NS, NP
Vfr
C2 111-126"
7.5YR 5/8
1, m, D
1 OYR 8/1
S
SG
NEXP
NS, NP
Vfr
C3 126-136"
10YR 8/1
3, m, D
7.5YR 5/8
S
SG
NEXP
NS, NP
Vfr
2Bt 136-156"
5YR 5/8
None
None
SL
wSBK
SEXP
SS, SP
Fr
Comments:
EVALUATED BY: Jeff Vaughan, Bailey Stiles, and McLean Davis
COMMENTS:
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LEGEND OF ABBREVIATIONS FOR SITE EVALUATION FORM
LANDSCAPE
TEXTURE GROUP
TEXTURE CLASS
.1955 LTAR
POSITION
(gal/day/sqft)
I
S - Sand
1.2-.08
CC - Concave Slope
LS - Loamy Sand
CV - Convex Slope
DS - Debris Slump
II
SL - Sandy Loam
0.8 - 0.6
D - Depression
L - Loam
DW - Drainage Way
FP - Flood Plain
III
SCL - Sandy Clay Loam
0.6 - 0.3
FS - Foot Slope
CL - Clay Loam
H - Head Slope
SiL - Silt Loam
I - Interflueve
Si - Silt
L - Linear- Slope
SiCL - Silt Clay Loam
N - Nose Slope
P - Pocosin
TV
SC - Sandy Clay
0.4 - 0.1
R - Ridge
C - Clay
S - Shoulder
SiC - Silty Clay
T - Terrace
O - Organic
MOIST CONSISTENCE
MOTTLES
WET CONSISTENCE
STRUCTURE
Vfr - Very Friable
1 -Few
NS - Non Sticky
G - Single Grain
Fr - Friable
2 - Common
SS - Slightly Sticky
M - Massive
Fi - Firm
3 - Many
S - Sticky
CR - Crumb
Vfi - Very Firm
VS - Very Sticky
GR - Granular
Efi - Extremely Firm
F - Faint
SBK - Subgranular Blocky
D - Distinct
NP - Non Plastic
ABK - Angular Blocky
P - Prominent
SP - Slightly Plastic
PL - Platy
P - Plastic
PR - Prismatic
f - Fine
VP - Very Plastic
m - Medium
c - Coarse
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ATTACHMENT 4: Saturated Conductivity (Ksat) Testing
Data
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Project: Terracon - JSOC Microgrid
Date(s): 7/14/2022
K-ot 120 in
Kfs = 0.00033 m/s
46.772 in/hr
699.753 gal/day/ftz
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A&
SOILMOISTURE Soilmoisture Ksat Calculator
1W
Soil Surface
H..... .. ...... Water, Head ....
s h
........... 43kgM
L -«
Water Table
H = borehole depth, r = borehole radius, h = constant
water head height in borehole, s = water tattle depth
and L = the vertical distance between constant water
head and water table 1 impervious layer.
Project: Terracon
Ksat: JSOC Microgrid
Depth: 120 in
Parameters
Scenario
Q: Steady Flow Rate (ml/min):
1700
r: Borehole Radius (cm):
5.715
h: Water head Height (cm):
10.08
H: Depth of Borehole (cm):
304.8
Water Temp ©:
-
S: Water Table Depth (cm):
-
Elrick and Reynolds
Soil Type Description
(m/s)
I. Compacted, Structure -less, clayey or silty materia
Ksat I:
3.36E-05
It. Soils which are both fine textured (clayey or silty
Ksat It:
1.07E-04
III. Most structured soils from clays through loams;
Ksat III:
1.89E-04
IV. Coarse and gravely sands; may also include somi
Ksat IV:
2.63E-04
Radcliffe (new)
(m/s)
I. Compacted, Structure -less, clayey or silty materia
Ksat I:
3.22E-05
It. Soils which are both fine textured (clayey or silty
Ksat It:
9.87E-05
III. Most structured soils from clays through loams;
Ksat III:
1.89E-04
IV. Coarse and gravely sands; may also include somi
Ksat IV:
2.67E-04
Glover
(m/s)
Ksat:
3.3E-04
Earth Manual
Water Table Condition
(m/s)
a. Deep Water Table
(L/h) > 3
Ksat-a: #tVALUE!
b. Shallow Water Table
1 <_ (L/h) <= 3
Ksat-b: #tVALUE!
c. Very Shallow water Table
(L/h) < 1
Ksat-c: #!VALUE!
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Appendbc A
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rRvEsncAYaW
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D: Vordem eta: mmrrair wd AMR (anr
sou rwUffw*wwwm cHMUNr S ,IY'-4
IMADING ,"D CCLCU .Anox
Q: Steady Fkm Raft (mumin):
h: V90W Pi@W k Bcmh M [any:
s, oepth ciwmarTdd! (cm):
wOWTOMPWBUM
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MWndTim.
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Appendix A
Aaramw Pw.. a .W r Sanpr D
Aardvark Pemeaumftr Field 8M dhm
CN1'i'E;
2r. 6oralioft} Olan�r Ma■� �fL�
H, Bomrd a boom W *
a: Vw aai doop=nar� ftmmW d APO (Cal:
SOU T
Now LMW Elapood ThM
Tbw Y FmmIdr Inbrnt
`r f_I-,
logh4
)°:Y,9rr�
D
9/
D 3f�DD
lewd
10'9I-/'
0
10: (f �/A
1-7 0
T�
; 7cl i]
0
boo
p
RMOM AND CALCL ATM
Q: S mly Flaw Raft (mllmin):
h:1MaM " Iml I in BorshWo (an):
a- o■pta of "Woe TaW6 (dfrl�
Waft Tawwoum
W"NW wow
CamaumptlW 04
Too[ Muir
COfMAnPdM M19
(--)-0
�1 Sao
70 c
�
ao
Ada
7&et>
OD
r vo
7� c
ITO0
7L
100
71
=I= US.A.
W117 P!e ON) Q64-3m
Poe 37
waWCOMMOM
100
I -7
CL>
1 boa
7 o 4
t--) �a4a
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PR,* CX
Aartom Pamta UWW swm;i. opt
AardvaHk Permmwftr Fief Dim 9 W
GATE
M. Boom" Doom im■l;
G: YDrdW fto A ban fbaarvair and APE (cm) -
SOB TexhavNitrucbmw CAimov7:
READING AND Ui.MAT1DN
Q: Shwdy Flow Rabe (mUmin):
h: Mtnbr HOW ti tttomhda (am):
S: Dapth aif wmeor Table (arn):
1A xwta■pw mbm
� F
�
w r u" ftpmw T[(rr>la
An �rt�o(r 1rmo
m++tn]
)r#arwl Warr
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