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Ultramar <br /> Ultramar,Inc Telecopy 209 585 5685 Credit <br /> PO Box 466 209-583 3330 Administrative <br /> 525 W Third Street 209 583-3302 Information Services <br /> Hanford CA 93232 0466 209 583 3358 Accounting <br /> (209)582 0241 <br /> m � <br /> DATE REPORT SUBMITTED October 15, 1999 <br /> QUARTER ENDING September 30, 1999 <br /> SERVICE STATION NO 419 <br /> ADDRESS 2350 Waterloo Road, CA <br /> COUNTY San Joaquin <br /> CONTACT PERSON Joseph A Aldridge TEL NO 559-583-3231 <br /> BACKGROUND <br /> During October 1993, three single-wall underground storage tanks were removed from the site <br /> and replaced with a complete double-wall UST system Soil samples were collected from the tank <br /> area and beneath the dispensers Over excavation, to a maximum depth of 30 feet, was conducted <br /> in the tank area to remove soil containing elevated levels of petroleum hydrocarbons Subsequent <br /> sampling and analysis indicate that none detect to elevated levels of gasoline hydrocarbons <br /> remained in the soil beneath the UST area The soil samples collected from the island areas were <br /> none detect for gasoline hydrocarbons <br /> In July 1994, three on-site monitoring wells (MW-1, MW-2 and MW-3) were installed <br /> Analytical data for the initial water samples collected from the wells indicate that groundwater <br /> was impacted with gasoline hydrocarbons Quarterly monitoring of the wells was initiated in <br /> October 1994 <br /> Groundwater monitoring wells MW-7 through MW-10, air-sparge well AS-1, and vapor <br /> extraction wells VW-1 and VW-2 (nested) were installed in September 1998 <br /> SUMMARY OF THIS QUARTER'S ACTIVITIES <br /> Doulos Environmental conducted groundwater sampling on August 31, 1999 Groundwater <br /> samples were collected from the ten monitoring wells <br /> i <br /> BEACON] <br /> I <br /> A Member of the Ultramar Croup of Companies #1 Quality and Service <br /> Uitratrl�ar <br />