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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. llliil,f !!I .� �H CA1� ' •, OQ Oss SEAL 031005 o FNGINSE' oJQ; Donna H. Barbour, P.E. Principal Engineer Attachment: Test Location Plan oca`veteran 0� GTSI GTSI. 2067 Hwy 16 Business ■ Denver, NC 28037 Phone 704-987-8378 since 199� NC Engineering License #E C-1825 rTl PO 14 Hy� G ROUND 316 SOUTH MAIN STREET SCALE: N.T,S. SALISBURY, NC T ECHNOLOGICAL SEASONAL HIGH WATER TABLE DORINC LOCATION DIAGRAM DRAWN BY: A.M.T.