SW4221202_Soils/Geotechnical Report_20230705 (2)

41 October 17, 2022
CATAWBA VALLEY
ENGINEERING&TESTING Mr. Derek Goddard
BREC, PA
P.O. 1520 Meadow View Drive
PO Box 747 Wilkesboro, North Carolina 28697
Hickory, NC 28603
[e-mail]
161 Lenoir Rhyne Blvd
Hickory,NC 28602
Re: Seasonal High Water Table Analysis (SHWT)
828 578 9972 0 Proposed Dollar General Store
828 322 1801 F
8 Biesecker Road
NC Firm No. C-3833 Lexington, Davidson County, North Carolina
SC Firm No. 5201
CVET Project Number: 22-623
Dear Mr. Goddard:
Catawba Valley Engineering and Testing (CVET) is pleased to submit the
results of the seasonal high-water table (SHWT) analysis performed for the
proposed Dollar General Store site located at the above referenced address
in Lexington, North Carolina.
It's our understanding that the SHWT analysis performed for this project is
for the design purpose of constructing a new permanent pond.
The contents of this report are provided for the use of BREC, PA and its
approved affiliates, and are not intended to be used as the basis for design
and construction for any other project. The contents of this report shall not
be utilized by any other parties unless written permission is granted by
CVET. CVET disclaims all liability from the misuse or reliance, by any such
parties, of the contents brought forth in this report.
TEST PROCUDURES AND FIELD SERVICES
The SHWT analysis included review of the data collected from the
subsurface exploration and geotechnical evaluation performed in July 2022
and drilling of an additional soil test boring in the proposed pond area
during October 2022. Our interpretation of the SHWT is the upper limit of
soil saturated with water for periods long enough for anaerobic conditions
to affect soil color. Such periods result in iron (Fe) reduction within soils
causing mottling or soil leaching to occur, typically resulting in a grayish
Geotechnical Engineering color.
Environmental Services Based upon our soil borings drilled to date, mottling was observed at
CMT/Special Inspections approximately 3.0 to 5.0 feet below existing site grades with elevated soil

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8 Biesecker Road
Lexington, Davidson County, North Carolina
CVET Project No. 22-623
moisture observed in soil samples collected from approximately 15.0 to 20.0 feet
below existing site grades.
Groundwater was not observed in any of the test borings drilled during this evaluation,
however each borehole was left open for only a short period of time during the drilling
operation, so the detection of groundwater during this brief period is difficult. Also
note that soil moisture and groundwater conditions vary depending on conditions such
as temperature, precipitation and season. Therefore, soil moisture and groundwater
location at other times of the year may vary from those observed at the time of this
subsurface exploration and as described in this report.
Based on the USGS groundwater data website, groundwater data from a similarly
constructed water well near the subject site is not available.
Based the information available, we conclude that the SHWT at the project site ranges
from a depth of approximately 3.0 to 5.0 feet below existing site grades. The testing
results presented in this letter report are based on the specific boring locations within
the proposed pond area as well as the eastern portion of the subject site and do not
reflect variations in subsurface conditions that may exist between test boring
locations.
We appreciate the opportunity to provide professional engineering services for your
project. If you have any questions regarding the contents of this report, please feel
free to contact us.
Sincerely,
CATAWBA VALLEY ENGINEERING AND TESTING, P.C. =
SEAL -
sd: 041419
:p_• i
11w /km--
10/17/2022
James H. Carter David M. LeGrand, Jr., PE
Senior Geologist President
NC 041419