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Quarterly Summary Report <br /> ., for <br /> The Pestana Trust Property <br /> 2360 East Street, Tracy, CA <br /> SITE DESCRIPTION AND HISTORY <br /> The site, presently unused, is that formerly occupied by <br /> (Dick) Reeve 's Exxon Station- a 15 , 900 square foot, <br /> rectangular parcel located at the northwest corner of a <br /> moderate size , retail shopping center at East Street and <br /> Grant Line Road, in the City of Tracy ( San Joaquin County) , <br /> California . The facility was operated as a retail service <br /> station from the early 1950s through 1991 . Both gasoline <br /> and diesel fuel were sold . The building that housed the <br /> station office and service bays at the site remains, but is <br /> vacant . The parcel is presently surrounded by 6-foot high <br /> cyclone security fencing. <br /> Land use in the area surrounding the site is of a mixed <br /> commercial , residential , and light-industrial nature. <br /> . In its September, 1991 preliminary assessment of soil and <br /> groundwater contamination at the site, WaterWork Corp. of <br /> Escalon reported that extra unleaded gasoline, regular <br /> unleaded gasoline, and diesel fuel were each being <br /> dispensed from its own 5 , 500 gallon capacity underground <br /> storage tank . These tanks were located just northeast of <br /> the station office . A 350 gallon underground waste oil <br /> storage tank was also present . This tank was located <br /> behind (to the east of) the office. <br /> During December of 1990 , the station's underground fuel <br /> storage tanksy�stems were precision tested . The extra <br /> unleaded tank,/failed its test , and during January, 1991 , <br /> the tanks and product lines were retested using helium gas . <br /> During the test , thextra unleaded tank developed a leak <br /> and an estimated 300 gallons of product was released into <br /> the fuel tank pit . The leak was reported to the San <br /> Joaquin County Public Health Services Environmental Health <br /> Division (PHS/EHD) and th tank was emptied of all � <br /> remaining product on the✓same day . On April 11 and 12 , <br /> 1991 , all on-site underground storage tanks and product <br /> lines were removed . During the removal , WaterWork staff <br /> noted the presence of moderate product odor near the tank <br /> Pit , staining near the fill-end of the diesel fuelstank and <br /> in the product line trenches , as well as product,/sheen on <br /> the groundwater standing in the bottom of the tank pit . <br /> Page 1 <br />