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n <br /> Groundwater "Grab" Sampling <br /> Groundwater "grab" samples were collected using a new disposable bailer The bailer was <br /> lowered through the center of the hollow stem auger by new twine to approximately 58 feet <br /> bgs (groundwater static level) This procedure was repeated until all sampling vessels were <br /> filled <br /> Laboratory Procedures for Samples Collected During Drilling Activities <br /> Selected soil and groundwater"grab" samples collected from the soil boring were analyzed <br /> by a California state-certified laboratory for the presence of total petroleum hydrocarbons <br /> calculated as gasoline, benzene, toluene, ethyl-benzene, and xylenes using modified EPA <br /> Methods 8015 and 8020, and lead by EPA Method 6010 <br /> • <br /> 920049 I BISGWRPR I A-2 SLpterrrber 4 1997 <br />