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i <br /> 1 <br /> QUARTERLY PROJECT UPDATE REPORT <br /> 7-ELEVEN STORE NO 20680 <br /> 9110 THORNTON ROAD <br /> STOCKTON, CALIFORNIA <br />' DECEMBER 10, 1992 <br /> 1,0 INTRODUCTION <br /> This report presents a quarterly update of monitoring and sampling activities conducted between <br /> July 1 and September 30, 1992, by Groundwater Technology, Inc (Groundwater Technology), on <br /> behalf of The Southland Corporation (Southland) at 7-Eleven Store No 20680 The site is located at <br /> Ile <br /> 9110 Thornton Road in Stockton, California (Figure 1) As shown on the site plan (Figure 2), the <br /> store is on the northern corner of Thornton Road and Waudman Avenue in a mixed commercial and <br /> Iresidential area <br /> 2 0 WORK SCOPE <br /> Services performed by Groundwater Technology during this reporting period included the following <br /> ■ Collected groundwater samples from monitoring wells MW-1 MW-9, and MW-18 on <br /> I July 30, 1992 <br /> ■ Collected groundwater samples from domestic wells 8968, 9036, 1912, 9140, 9156, <br /> and 9172 on July 30, August 27, and September 24, 1992 <br /> Monitored available groundwater monitoring wells for depth to water (DTW) and <br /> depth to separate phase-hydrocarbons (d present) on September 24, 1992 <br /> I0 Collected groundwater samples from monitoring wells MW-13, MW-16, MW-18, MW- <br /> 19, and MW-20 and cluster wells MWA SABC and MWA 7ABC on September 30, <br /> 1992 <br /> --, 'I <br /> II���I GROUNDWATER <br /> TECHNOLOGY, INC <br />