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r <br /> IPAWorking to Restore Nature <br /> 3315 Almaden Expressway, Suite 34 <br /> San Jose, CA 95118 <br /> Phone: (408) 264-772.3 <br /> FAX: {408}264-2435 <br /> April 28, 1994 <br /> t Mr. Michael Karvelot <br /> Director of Environmental Affairs <br /> Quik Stop Markets, Inc: <br /> 4567 Enterprise Street <br /> Fremont, California . 94538 <br /> Subject: Letter Report,'Quarterly Groundwater Monitoring, First-Quarter 1994 <br /> { Quik Stop Market No. 132 <br /> 3555 West'Hammer Lane, 'Stockton, California.• <br /> Mr.. Karvelot: <br /> RESNA Industries Inc. (RESNA), is pleased -to present this report of the results <br /> P of the <br /> quarterly groundwater:monitoring, forfirst"quarter 1994 conducted at the subject site located <br /> in Stockton, San Joaquin County; California.(Plate.1). The-site plan.(Plate 2) shows the <br /> r location of the station building, adjacent streets monitorin wells n - <br /> J g " , and other slte specific . <br /> features. Background information on the site was included in Appendix A of our quarterly <br /> groundwater monitoring report for. September 1993 (RESNA, December. 1993).- " <br /> The monitoring wells are sampled_ quarterly'to"monitor two shallow groundwater aquifers <br /> { underlying the site. The program"objectives are listed"below: <br /> Measure depth of groundwater <br /> Sample and 'wateranalyze ,groundt samples for selected. petroleum <br /> hydrocarbons <br /> • <br /> 'Construct groundwater elevation contour. maps within :the study area <br /> r boundaries " <br /> Compare-current-and pastdata <br /> The existence and degree of petroleum hydrocarbon's in-the'groundwater underl in "a site <br /> is evaluated by (1) the presence"of thefree-floating product, and ( .2) laboratory analyses of <br /> Y <br /> Y. groundwater samples to evaluate concentrations of total petroleum hydrocarbons as gasoline <br /> (TPHg), -and for benzene, toluene, ethylbenzene, and total xylenes (BTEX). <br /> F7132.93/Q 14 <br />