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1 7hmdwe1EJU10 • ' 4 to 4 5 feet bgs and groundwater flow direction was determined to be toward the northwest (SETC, 1996) Several borings and wells were eventually installed near the LUSTs, however the ' consultant believed the groundwater flow direction was to the northeast (not northwest) and therefore no wells were actually located downgradient of the former fuel tanks and pump island (SETC, 1996) It is well documented that petroleum leaks at service stations mainly occur along piping and pump islands No investigation was performed for the piping or pump island The ' SJCEHD and RWQCB closed the site in 1997 ' Cah fornia Highway Patrol—385 West Grant Line Road, One leaking gasoline UST and fuel dispenser were removed in May 2000 (Appendix E7) The groundwater is contaminated with ' gasoline and associated constituents including MTBE (URS, 2000) The depth to groundwater varies from 4 5 to 6 feet bgs and the flow direction is to the north-northwest (URS, 2000) The facility has been out of compliance with monitoring and assessing offsite extent of contaminant plume for 2 years (SJCEHD, 2003) Former Shell Station (7-11 Store) —455 West Grant Line Road Three gasoline tanks were ' found to be leaking in 1986 and removed in 1989 (Table 1 and Appendix E8) Groundwater was significantly contaminated with gasoline and more than 15 monitoring wells were installed ' (HLA, 1991) Groundwater was encountered at approximately 5 feet and flowed to the northeast (HLA, 1988) 4.0 CONCLUSIONS AND RECOMMENDATIONS Historically, residential homes and one small commercial building occupied the Site Only two ' tire businesses have occupied the small commercial building on the southwest corner of the Site including • 1969 to 1994 - Grant Line Frame & Wheel Alignment Service, and ' . 1994 to 1998 - Jimmy's Tire Shop li 1 �I Site Assessment Report 1 1 21 May 2003 ', READWELL&ROLLO,INC