HomeMy WebLinkAboutSW3200702_316 S. Main Street.SHWT Report_20200910GROUND
TECHNOLOGICAL
SERVICES
INC.
August 28, 2020
Bluestone Land Management, PLLC
Jonathan Carter, P.E.
470 N. Broad Street; Suite A
Mooresville, NC 28115
RE: Seasonal High Water Table Determination (SHWT)
316 South Main Street
Salisbury, NC 28144
CM202008-222
Attention Mr. Carter:
Per your request, Ground Technological Services Inc. (GTSI) has performed construction
quality control services to determine the Seasonal High Water Table at 316 South Main Street in
Salisbury, N.C. These services consisted of visual observations and one hand auger boring
advanced within the general area of the proposed underground detention pond (to be designed by
others) near the rear of the site.
On August 26, 2020, GTSI arrived on site and advanced one (1) hand . auger boring near the
approximate riser location within the future underground detention pond (see test location plan)
near the rear of the site. The boring was advanced to a depth of approximately twelve (-12') feet
bgs (below ground surface). The boring was allowed to remain open for a period of 24 hours to
determine if groundwater would rise within the boring. After the boring had been open for 24
hours, GTSI measured the water elevation at a depth of approximately four and one half (4.5')
feet above the bottom of boring B-1.
Based on an approximate water depth of four and one half (4.5') feet within the open boring after
24 hours, it is our opinion that the seasonal high water table (SHWT) exists at an elevation of
approximately seven and one half (7.5') feet below ground surface in the general area of the
future underground detention pond near the rear of the site.
This report has been prepared in accordance with generally accepted soils and foundation
engineering practices. In the event that any change occurs in the design,
nature, or location of the proposed structures, GTSI should review the
applicability of conclusions and recommendations in this letter.
GTSI ■ 2067 Hwy 16 Business ■ Denver, NC 28037
Phone 704-987-8378
NC Engineering License # C-1825
Seasonal High Water Table Determination (SHWT)
316 South Main Street
Salisbury, NC 28144
CM202008-222
Page 2
GTSI appreciates the opportunity to provide these services to you. If you should have any
questions, please call us at your convenience.
Sincerely,
Ground Technological Services, Inc.
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Donna H. Barbour, P.E.
Principal Engineer
Attachment: Test Location Plan
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GTSI
GTSI. 2067 Hwy 16 Business ■ Denver, NC 28037
Phone 704-987-8378 since 199�
NC Engineering License #E C-1825
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ECHNOLOGICAL
SEASONAL HIGH WATER TABLE DORINC LOCATION DIAGRAM
DRAWN
BY: A.M.T.