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'M119 <br /> 61 Ft <br /> December 11, 1991 <br /> Beacon Service Station No. 492• Manteca, Caiifoti�nd from the <br /> combined gradient data environmental consultant <br /> from the site <br /> for the adjacent property. <br /> o Collect relatively undisturbed soil samples at 5-foot intervals from the soil <br /> boring. <br /> o Install a 4-inch'diameter monitoring well in the soil boring. State-certified <br /> !es to an Ultramar approved <br /> o Submit selected soil sarr►P Petroleum hydrocarbons as g <br /> asoline (TI'IIg) <br /> laboratory for analyses of total p envy (EPA) Methods 3030 and 8015. <br /> Environmental Protection Ag using EPA <br /> using � <br /> benzene,toluene.ethylben d 8Q20, andtotallead using EPA 6010. <br /> Standard Methods 5030 an ur a and sample ground water from <br /> o Develop the monitoring well and then p g <br /> the well. <br /> nal ze the water sample for TPI-Ig by EPA Method 8015 and gTEX by EPA <br /> o A Y <br /> Method 602. elevations. <br /> o Contract a licensed land surveyor to survey <br /> well casing <br /> o Evaluate the groundwater gradient beneath the site. <br /> Ultramar- <br /> o <br /> Collect samples of the drill cuttings f rplig,$EXaadstto alnlead using <br /> approved laboratory for analysis of be tions. <br /> methods described above. Result`o;lkaes`r analyses Ult amarl of these options. <br /> p ions. <br /> disposal options for the sail- we PP <br /> ositian of drummed purged water <br /> o Inform Ultramar of the quantity and dispd onsite to facilitate disposal. <br /> and soll stockpileconclusions, and <br /> o Prepare a report summarizing our methods. findings, <br /> ' commendations. The report will be sent to Ultramar for their use and <br /> re <br /> distribution. gradient <br /> The <br /> well will be drilled downgradient of the existing wells an <br /> calculations <br /> brie' oen�ng property <br /> calculations derived from water level data collected at the <br /> on October 14, 199E <br /> 3 <br /> 36192-7W <br />