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SECOR <br /> 1, !s r lrrr! rr1 I,r, rirrrr,lt!![ tl <br /> July 19, 1995 <br /> Ms Anastasia Duarte <br /> Time Oil Company <br /> 2737 West Commodore Way <br /> Seattle, WA 98199 <br /> SUBJECT Quarterly Monitoring Report, April - rune 1995 <br /> Jackpot Food Mart <br /> 14000 East Highway 88 <br /> Lockeford, California <br /> Ms Duarte <br /> This report presents the results of quarterly groundwater monitoring and sampling conducted at <br /> Time Gil. Company's Jackpot Food Mart at 14000 East Highway, Lockeford, California (the Site, see <br /> Figure 1, Site Location Map) <br /> GROUNDWATER MONITORING AND SAMPLING <br /> Four groundwater monitoring wells were sampled on May 24, 1995 These wells were installed as <br /> part of an environmental investigation conducted in December 1994 Prior to sampling, depth to <br /> water in each groundwater monitor well was taken and subjective analyses performed The subjective <br /> analyses consisted of checking for floating product or a hydrocarbon sheen by lowering a clean Teflon <br /> bailer down the well and collecting a sample at the groundwater-air interface Wells not containing <br /> floating product were purged of approximately 3 to 5 volumes of water or until groundwater <br /> parameters of pH, temperature, and conductivity stabilized as measured by portable meters calibrated <br /> to a standard buffer and conductivity standard (Attachment n Groundwater samples were then <br /> collected by lowering a clean disposable bailer Into the well and collecting a representative sample of <br /> the formation water The groundwater sample was slowly transferred to laboratory-cleaned sample <br /> containers, sealed with Teflon lined caps, and transferred to cooled storage The samples were then <br /> transported under suitable chain-of-custody to a State of California certified laboratory for the <br /> requested testing Each groundwater sample was analyzed for total petroleum hydrocarbons as <br /> gasoline (TPHg) and benzene, toluene, ethylbenzene, and xylenes (BTEX), using modified EPA <br /> Method 8015, and EPA Method 602 respectively <br /> Groundwater Elevation Data <br /> ! Groundwater at the Site was measured at depths between 75 40 to 86 62 feet below ground surface <br />�. A summary of data regarding groundwater levels through May 24, 1995 Is presented In Table 1 <br /> SECOR Internattooal, Inc 'rime Od Company <br /> g295Loc 19 July 1995 <br />