SW3190201_SHWT Report_20190429

E- IC61QECS
SOUTHEAST, L "Setting the Standard for Service"
_______-_.-. Geotechnical • Construction Materials • Environmental Facilities NC Re istued Engineuring Firm F-1073
NC Registered Geologists Firm C-4013
CC Ft99iatO]Wf Elam 3230
January 21, 2019
Mr. Charles Norton
O'Reilly Auto Parts
233 South Patterson Avenue
Springfield, Missouri 65802
Reference: Seasonal High Water Table Determination
O'Reilly Auto Parts - Wingate
Wingate, Union County, North Carolina
ECS Project No: 49:8689
Dear Mr. Norton:
ECS Southeast, LLP (ECS) is pleased to submit this report of the Seasonal Water Table Determination (SHWT)
for the O'Reilly Auto Parts Project in Wingate, Union County, North Carolina. This report summarizes our
findings for the site.
PROJECT UNDERSTANDING
The property is located at 3628 US Hwy 74 in Wingate, Union County, North Carolina. According to the
Union County Online GIS website, the site is identified as Parcel Identification Numbers (PINS) 09054034
and 09054017H, and consists of approximately 1.27 acres.
ECS has been requested to determine the SHWT depth within the stormwater control measure (SCM),
proposed as part of the stormwater management plan.
The proposed site plan, provided by Bohler Engineering, was utilized as a background to display the
boring location (Figure 1), which is in general proximity to the proposed SCM. The soil investigation was
conducted with a hand auger.
SCOPE OF SERVICES
ECS conducted a study/investigation of the soils to identify the depth of the seasonal high water table, if
present. The properties and characteristics of the soils retrieved from the boring were observed and
recorded in field notes. The properties include texture, depth, the presence of restrictive horizons, depth to
seasonal high water table, coarse fragments, etc. The assessment was conducted in accordance with
current soil science practices and technology.
ECS Capitol Services, PLLC • ECS Florida, LLC • ECS Mid -Atlantic, LLC • ECS Midwest, LLC • ECS Southeast, LLP • ECS Texas, LLP
www.ecslimited.corn

SHWT Study
O'Reilly Auto Parts - Wingate
Wingate, Union County, North Carolina
ECS Project No. 49-8689
SEASONAL HIGH WATER TABLE STUDY
Below is a summary of the soils retrieved from the boring.
SHWT Boring 1_— The surface layer to a depth of approximately 3 inches bgs was brown silty loam with
weak, fine, granular structure. The consistence was non -sticky, non- plastic, and friable. The sub -surface
layer from approximately 3 inches to approximately 37 inches (-3.1 feet) bgs was yellow clay to clay loam
with moderate, fine, sub -angular blocky structure. The consistence was slightly sticky, slightly plastic, and
friable. Channery slate rock was encountered at approximately 37 inches bgs. Auger refusal was met at
approximately 37 inches bgs.
FINDINGS
SHWT Boring 11 — No indicators of SHWT were identified to a depth of approximately 37 inches (-3.1 feet)
bgs. Auger refusal was met at approximately 37 inches bgs. No tree water was observed within the boring.
The type of stormwater management facility designed is based on the depth of the SHWT or confining layer.
The information above may be potentially utilized to determine the type of stormwater management
facility best suited for this site according to the most recent version of the North Carolina Division of Water
Quality Stormwater Best Management Practice Manual.
CLOSING
ECS is pleased to offer our professional services and look forward to assisting in any of your site analysis
needs in the future. If you have any questions or require further assistance, please contact us at 704-525-
5152.
Respectfully,
ECS SOUTHEAST, LLP
David E. Valentine
Environmental Team Manager
dvalentine ecslimited.com
704-525-5152
Attachment: Figure 1— SHWT Boring Location Map
W. Brandon Fulton, LSS, PSC, PWS
Environmental Principal
bfulton,@ecsl-imited.com
704-525-5152
0�

r w u_
T
Z Ur W fii N
rl� _j m cYi� N r
O OF- � _j Q
Ma OQ ¢1—0 z c� ❑mo W
ill -<Z Uv Z4� D Zco
o
Z O W Q y o0
J� o� rn¢� v cc 'v C�
a
obp ,
v-
m �I � - .•W,,,,;;,x titer:�.., .r,..::w__...�._- �.. - �F
= m k I
9
1 !�