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is Ultramar Ultramar,Inc Telecopy 209-585 5685 Credit P O Box 466 209-583 3330 Admincstrative 525 W Third Street 209 583 3302 Information Services 209 583-3358 Accounting Hanford CA 93232-0466 (209)582 0241 ENVIRONMENTAL PROJECT QUARTERLY STATUS REPORT ECEIVED DATE REPORT SUBMITTED July 12, 1995 J U L 17 1995 QUARTER ENDING June 30, 1995 ENVIRONMENTAL. HEALTH SERVICE STATION NO . 41.9 PERMIT/SERVICES ADDRESS 2350 Waterloo Road, CA COUNTY San Joaquin CONTACT PERSON Randall K Stephenson TEL NO 209-583-3324 BACKGROUND: During October, 1993, three single-wall underground storage tanks were removed from the site and replaced with a complete double-wall UST system Soil samples were collected from the tank area and beneath the dispensers Over excavation, to a maximum depth of 30 feet, was conducted in the tank area to remove soil containing elevated levels of petroleum hydrocarbons Subsequent sampling and analysis indicate that none detect to elevated levels of gasoline hydrocarbons remained in the soil beneath the UST area The soil samples collected from the island areas were none detect for gasoline hydrocarbons In July, 1994, three on-site monitoring wells (MW-1, MW-2 and MW-3) were installed Analytical data for the initial water samples collected from the wells indicate that ground water was impacted with gasoline hydrocarbons Quarterly monitoring of the wells was initiated in October, 1994. SUMMARY OF THIS QUARTER'S ACTIVITIES: Ground-water sampling of all the wells was conducted by Doulos Environmental on April 12, 1995 RESULT OF QUARTERLY MONITORING: Ground-water elevations measured in the wells have increased an average of 5 feet since the last sampling event Analytical results of the water samples continue to indicate that dissolved concentrations of gasoline hydrocarbons remain present in the wells i 1ECO I A Member of the Ultramar Group of Companies #1 Quairty and Service unrart<iar