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PRELIMINARY HYDROGEOLOGISI'ASSE.SSMEN7 REPORT <br /> 14t1.70 West Frontage Road <br /> Manteca, Caiilornia <br /> Delta Projcct No.40-88-474 <br /> „. Page 5 <br /> 2.3 Site history <br /> The following information was provided by Mr.Jcrry Moore(personal communication). Jerry and Diare <br /> Moore purchased the lease option for the site an October 11, 1983, from David Webster. Mr. Webster <br /> operated a conventional gas station at the site for an undetermined Iength of time. Jerry and Diane <br /> Moore purchased the property at this location from Norman and Claudine Rydell in July 1986. The <br /> property is currently leased to Mr.Frank Guinta,Sr.,who is operating the site as a convenience store and <br /> gas station. Prior to the lease option purchase by Jerry and Diane Moore in October 1983, all <br /> underground storage !auks at the site had been removed and the currently existing tanks were imialled. <br /> A" Tank information is presented in Table 3. <br /> TABLE 3 <br /> Tank Information <br /> Size <br /> figallons) Product Stored Age Status <br /> fM <br /> 10,000 Regular gasoline 5 years Operating <br /> 10,000 Unleaded gasoline 5 years Operating <br /> it <br /> i_ 10,000 Diesel 5 years Operating <br /> 2.4 Spill History <br /> :. <br /> .: There have been no documented releases of petroleum hydrocarbons at the site,according to Mr.Moore. <br /> 2_5 Water We1l Survev <br /> I The California Department of Water Resources records were researched to determine the presence of <br /> existing water wells within a IR-mile radius of the site. The search discovered 24 wells that are listed <br /> in Table 4. Tile approximate Locations of these wells are plotted in Figure2 <br /> 2A Utility Survey <br /> Underground Service Alert-(U'SA) was-contacted to locate any-underground utilities-at the site before- - <br /> drilling began. ;he top 5 feet of each soil boring was checked with a steel hand probe to insure no . <br /> utilities would be encountered. <br /> f <br />