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1 <br /> 1 <br /> PROJECT QUARTERLY UPDATE REPORT <br />' 7-ELEVEN STORE <br /> 9110 THORNTON ROAD <br />' STOCKTON, CALIFORNIA <br /> May 1, 1991 <br />' INTRODUCTION <br />' This report presents a quarterly update of services conducted by Groundwater Technology, Inc at 7- <br /> Eleven Store No 20680, located at 9110 Thornton Road in Stockton, California (Figure 1) As shown on <br /> the Site Plan (Figure 2), the store is situated on the northern comer of Thornton Road and Waudman <br /> Avenue in a mixed commercial and residential area This report summarizes work performed by <br /> Groundwater Technology between .January 1, 1991, and March 31, 1991 <br /> Detailed descriptions of the background and subsurface conditions for the site have been outlined in <br />' previous reports, and presented most recently in the August 5, 1990 Project Quarterly UpdateReport17- <br /> igven Store, 9110 Thornton Road. StgrMn. lif 1 <br />' SCOPE OF WORK <br />' Services performed by Groundwater Technology during this reporting period consisted primarily of <br /> regularly scheduled monitoring and sampling of the groundwater monitoring and domestic water supply <br />' wells Specifically, the following services have been conducted during this reporting period <br /> • Monitored on-srte and off-srte wells for depth-to-water and depth-to-product on <br /> February 21, and March 28, 1991. <br />' • <br /> Sampled groundwater from three monitoring wells, two monitoring-well clusters, and one <br /> p <br />' recovery well on February 21, 1991 <br /> ❑CisGROVND 4ATER <br /> TKNNOL0 ,NC <br />