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11) Transmit the soil samples to a state-certified analytical laboratory for analysis of the <br /> following- p <br /> Total petroleum hydrocarbons (gasoline) (EPA 8015m) <br /> Benzene, toluene, ethylbenzene, xylene, and MTBE(EPA 8020) <br /> (Steps 12-17 are optional, if soil contamination appears to extend to groundwater) <br /> "F I <br /> 12 Complete three of the borings as a 2-inch diameter mo�nitoring wells according to the <br /> p g # i! <br /> well design shown in Figure 3. k <br /> 13)No sooner that 48 hours after installation, survey the elevations of the well casing=s and <br /> measure the depth to groundwater using a water level meter accurate to 0.01 foot. <br /> Prepare a groundwater gradient map. i <br /> from each well and `n easur'e H temperature,and <br /> i 4}Purge at least three well volumes � p p <br /> conductivity during purging. �{ <br /> i <br /> 15) Store purged water in 55-gallon DOT-approved drums for later disposal. <br /> 16) Collect groundwater samples in sterilized EPA vials and place in a cooled ice chest. <br /> 17) Transmit water samples to a state-certified laboratory for analysis of the following: <br /> Total petroleum hydrocarbons as gasoline(EPA 602) <br /> Benzene,toluene, ethylbenzene,xylene, and MTiBE(EPA 8020) -4 <br /> 18) Submit a Preliminary Investigation and Evaluation Report describing the investigation <br /> and presenting the results. <br /> is <br /> � 7 <br /> C <br />