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1 <br />' QUARTERLY REPORT <br /> • January 1996 <br />' Marlowe Properties <br /> 4648 East Waterloo-Road <br /> Stockton, California <br /> 1.0. INTRODUCTION/SCOPE OF WORK <br /> In accordance with the request of Mr Jonathan Marlowe of Marlowe Properties, Advanced <br /> GeoEnvironmental, Inc (AGE) has performed quarterly ground water monitoring activities at 4648 <br />' East Waterloo Road in Stockton, Cahfomia(the site) This report details the morutonng and sampling <br /> procedures utilized at the site in January 1996, and presents the results of the laboratory analyses <br />' The location of the site is illustrated on Figure 1 -Location Map A plan of the site is illustrated on <br /> Figure 2 - Site Plan <br />' The monitoring and sampling was performed in accordance with San Joaquin County Public Health <br /> Services - Environmental Health Division (PHS-EHD) and Regional Water Quality Control Board <br /> (RWQCB) guidelines for the investigation of underground storage tank (UST) sites <br /> I <br /> 2.0. BACKGROUND <br /> 21 SITE LOCATION <br /> IThe site area is located on the south side of Waterloo Road, east of Highway 99, in a rural/industnal <br /> area of low topographic relief east of Stockton, California (Figure 1) The site is located in Section <br /> 53, Township 2 North, Range 7 East, Mount Diablo Base and Meridian (MDB&M) A large <br /> warehouse, a small office building, two fenced storage yards and a parking/delivery area are present <br /> on the site (Figure 2) <br /> 2 2 UNDERGROUND STORAGE TANK REMOVAL <br /> IIn January 1988, one 550-gallon waste gasoline underground storage tank (UST)was removed from <br /> the site Total petroleum hydrocarbons quantified as gasoline (TPH-g) was detected in soil samples <br /> collected beneath the UST The PHS-EHD required additional investigation of the UST area to <br /> determine the lateral and vertical extent of hydrocarbon-impacted soil and ground water <br /> 23 SITE ASSESSMENT <br /> I In July 1988, one ground water monitoring well (MW-1) and one soil boring (13-1) were installed <br /> southwest of the former UST location TPH-g was detected in soil samples collected from both <br /> borings and in ground water samples collected from MW-1 Between 1988 and 1992, this well <br /> f <br />