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Working to Restore Nature <br /> t42501 Albrae Street,Suite 100 <br /> Fremont,California 94538 <br /> Phone (510)440-3300 <br /> FAX (510)651-2233 <br /> September 8, 1994 <br /> Mr Michael Karvelot <br /> Director of Environmental Affairs <br /> IQuik Stop Markets, Inc <br /> 4567 Enterprise Street <br /> Fremont, California 94538 <br /> Subject Letter Report, Semannual Groundwater Monitoring, First Half 1994 <br /> Quik Stop Market No 120 <br /> 9321 North Thornton Road, Stockton, California <br /> Mr Karvelot <br /> RESNA Industries Inc (RESNA), is pleased to present this report of the results of the <br /> senuannual groundwater monitoring for the first half of 1994 conducted at the subject site <br /> in Stockton, San Joaquin County, California (Plate 1) The site plan (Plate 2) shows the <br /> location of the station building, adjacent streets, monitoring wells, and other site-specific <br /> features Background information on the site was included in Appendix A of our <br /> semiannual groundwater monitoring report for June 1993 (RESNA, August 1993) <br /> The monitoring wells are sampled semiannually to monitor the shallow groundwater <br /> underlying the site The program objectives are listed below <br />` 0 Measure depth of groundwater <br /> 0 Sample and analyze groundwater samples for specified petroleum <br /> hydrocarbons constituents <br /> • Construct groundwater elevation contour maps within the study area <br /> boundaries <br /> • Compare current and past data <br /> The existence and degree of petroleum hydrocarbons in the groundwater underlying a site <br /> is evaluated by (1) the presence of free-floating product, and (2) laboratory analyses of <br /> groundwater samples to determine concentrations of total petroleum hydrocarbons as diesel <br /> (TPHd), total petroleum hydrocarbons as gasoline (TPHg), and benzene, toluene, <br /> ethylbenzene, and total xylenes (BTEX) <br /> F7120 94/1Q4 <br />