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' ASS O C I ATE S I N C . <br /> Monitoring well MW1 was purged a minimum of three well volumes and until the stabilization <br /> of electric conductivity, pH, and temperature was observed. Subsequent to purging, groundwater <br /> was sampled and transferred to appropriate sample containers, using a clean, disposable bailer <br /> with a bottom-emptying device to reduce volatilization. Sample containers were then labeled <br /> with sample identification, placed on ice, and shipped under chain-of-custody to Sequoia <br /> Analytical. Field development/purge logs are presented in Attachment 1. <br /> Laboratory Analysis <br /> The groundwater sample from well MW1 was analyzed by Sequoia Analytical for total <br /> petroleum hydrocarbons as gasoline (TPHg), benzene, toluene, ethyibenzene, and xylenes <br /> (BTEX), by EPA Method 8015/8020, and oxygenates fuel additives by EPA method 8260. <br /> Laboratory Results <br /> TPHg, toluene, ethylbenzene, and xylenes were detected above the laboratory method detection <br /> limits. No other gasoline constituents were reported above their respective laboratory method <br /> detection limits. <br /> • Analytical results are summarized in Table 2. Laboratory data sheets and chain-of-custody <br /> documentation are provided in Attachment 2. <br /> WATER AND SOIL DISPOSAL <br /> Soil and water generated during February 1999, on-site well installation/sampling activities was <br /> transported off-site for treatment/disposal. <br /> On June 4, 1999, 11.0 gallons of stored water was transported by Clearwater Environmental to <br /> Alviso Independent Oil's facility in Alviso, California. <br /> On August 16, 1999, two (2) drums of soil were transported by ATC to Forward Landfill located <br /> in Stockton, California. <br /> Copies of Non-Hazardous Waste Manifests, for both water and soil, are included in Attachment <br /> 3. <br /> w:117292.00021reports0 qmr 1999.doe 2 <br />