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j <br /> d EA <br /> Working To Restore Nature <br /> ;s <br /> 3315 Almaden Expressway, Suite 34 <br /> San Jose,CA 95118 <br /> Phone (408) 264-7723 <br /> FAX (408) 264-2435 <br /> 1 December 1, 1993 <br /> ff Project No. F7132 93 <br /> I � <br /> Mr Michael Karvelot <br /> Director of Environmental Affairs <br /> Quik Stop Markets, Inc. <br /> 4557 Enterprise Street <br /> � Fremont, California 94538 <br /> Subject- September 1993 Quarterly Groundwater Sampling and Analysis at Quik Stop <br /> Market No. 132, 3555 West Hammer Lane, Stockton, California <br /> t <br /> Mr. Karvelot: <br /> i <br /> RESNA Industries Inc. (RESNA) is pleased to present this report of the results of the <br /> September 1993 quarterly groundwater sampling and analyses conducted at the subject site <br /> 1 ; located in Stockton, San Joaquin County, California (Plate 1) The site plan (Plate 2) shows <br /> r the current location of the station building, adjacent streets, monitoring wells, and other site- <br /> specific features. Background information on the site is included in Appendix A <br /> li <br /> The monitoring wells are sampled quarterly to monitor the shallow groundwater underlying <br /> the site. The program objectives are listed below <br /> • Measure <br /> depth of groundwater <br /> P <br /> • Sample and analyze groundwater samples for selected petroleum hydrocarbons <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 /> r is indicated by (1) the presence of the free-floating product, and (2) laboratory analyses of <br /> groundwater samples to evaluate concentrations of total petroleum hydrocarbons as gasoline <br /> (TPHg), and the constituents benzene, toluene, ethylbenzene, and total xylenes (BTEX) <br /> Lr� <br /> t <br />