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W-1511" �_ nxr �". �l 21, y rH'�n�i F- PROBLEM ASSF-SSMr-NT REPORT Shell Service Station r 7910 Lower Sacramento Road,Stockton,California Shell WIC No.204-73240808 Delta Project No.40-&9-147 Page 3 A Phase I HydwgeologieA.ssessment Words Plats,dated March 31,1989,was prepared by Delta and submitted to SJLHD for approval �• APhase I Hydrogeologic Assessment Reprsrr,dated October 20,1989,was prepared by Delta and submitted l to the SJLHD. This report contains information pertaining to soil sampling results collected during the advancement of six soil borings and water sampling results from three of the soil borings completed as }_ monitoring wells. i:- 2 Well I ve to An inventory of existing domestic and mteAcipal water supply wells near the site was initiated on February 22, 1989, by a Delta representative at the California Department of Water Resources (DWR). According to DWR records,.25 water supply wells are present within a 111-mile-radius of the site 23 Site 111stor� Records from the San.Joaquin County Assessor's office indicate that the site Parcel No.is 077-33049,and that the land is owned by Y. C. Soda. Shell owns the station building, underground storage tanks, and piping. Mr. John Kindrick is the current station operator and has leased the facility from Shell for rxa # i approximately 11 years. t A praci,ion tank test was performed during the summer of 1987 by Hunter Environmental on the three former untcrground storage tanks. The results,as discussed with the owner,did not indicate a problem with I" the tightness of the tanks. However,due to the age of the steel underground storage tanks,Shell decided j to replace them with fiberglass tanks in December 1988. � I �., On December 20, 1988,four steel underground storage tanks were excavated and removed from the site. A tank closure report detailing tank removal activities was submitted to the SJLHD in Apri11989. Three to : - - new 10,000-gallon double-walled fiberglass underground storage tanks were installed on December 22,1998.-.----- . Tank sizes,type of product stored,age,and tank construction data are presented in Table 1.