Laserfiche WebLink
I <br /> ' QUARTERLY-GROUND WATER MONITORING _ <br /> _ April 1995 <br /> Chapin Bros., Inc. <br /> 1766 Monte Diablo Avenue <br /> Stockton, CA <br /> 1.0. INTRODUCTIONlSCOPE OF WORK <br /> In accordance with the request of Mr Russell Chapin,Advanced GeoEnvironmental, Inc <br /> (AGE) has performed quarterly ground water monitoring procedures at 1766 Monte Diablo <br /> _ Avenue in Stockton, California (the site) This report details monitoring and sampling <br /> activities performed at the site in April 1995 The monitoring and sampling was performed <br /> ' in accordance with San Joaquin County Public Health Services - Environmental Health <br /> Division (PHS-EHD) and Regional Water Quality Control Board (RWQCB) guidelines <br /> The location of the site is illustrated in Figure 1, a plan of the site is illustrated in Figure <br /> ' 2 <br /> 2.0. BACKGROUND <br /> 21 HISTORICAL SITE USAGE <br /> The site was operated as a gasoline service station from the late 1930's to December 1990 <br /> Three underground storage tanks (USTs) were used to dispense gasoline at the site <br /> Additional tanks were added at the site between 1941 and 1975 Since 1991, to the present <br /> the site has operated as an automotive repair facility <br /> ' T The site is currently occupied by a single L-shaped building, which houses the auto repair <br /> business The building is surrounded to the north and west by an asphalt-paved parking <br /> ' area <br /> - <br /> 22 UNDERGROUND STORAGE TANK REMOVAL <br /> In August 1993, one 550-gallon waste oil UST, two 4,000-gallon gasoline USTs and two <br /> ' 8,000-gallon gasoline_USTs were removed from the site by Jim Thorpe Oil of Lodi, <br /> California The tanks were removed from the north-central portion of the property During <br /> removal, three additional USTs were discovered near the western portion of the property <br /> ' and removed These tanks were apparently abandoned in place However, the San Joaquin <br /> County Public Health Services - Environmental Health Division has no record of the <br /> ' abandonment <br /> S611 samples collected at the time of the tank removals indicated the presence of petroleum <br /> _ hydrocarbon-impacted soil of the site. <br />