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Quarterly Report - First Quarter 2000 Former FISCO WAREHOUSE (Howard Lenz Property) 1648 Shaw Road, Stockton, California I1.0. INTRODUCTION At the request of Mr Peter Lenz of Innovative Beverage Brokers,Advanced GeoEnvironmental, Inc I (AGE) has prepared this quarterly report for the property located at 1648 Shaw Road, Stockton, California The site and the surrounding area are illustrated in Figure 1 Structures, boring and well ' locations are illustrated on Figure 2 The quarterly report is prepared in accordance with San Joaquin County Public Health Services - ' Environmental Health Division (PHS-EHD) and Central Valley Regional Water Quality Control Board (CVRWQCB) guidelines for the investigation of underground storage tank (UST) sites Background information is summarized in the Preliminary Site Investigation Report, dated 30 ' December 1997 and prepared by AGE ' 2.0. PROCEDURES Three dual-completed ground water monitoring / vapor extraction wells and one exploratory soil ' 0 boring were installed in February 2000 Quarterly ground water monitoring was performed on 03 March 2000 Field work was performed in accordance with PHS-EHD and CVRWQCB guidelines for the investigation of UST sites 1 ' 21 DRILLING AND SAMPLING From 22 to 24 February 2000, four soil borings were advanced at the site using a CME-75 drill ng ' Barings MW1, MW2 and MW3 were advanced to depths of 55 feet below surface grade (bsg) using 10-mch diameter hollow-stem augers Boring B6 was advanced to a depth of 65 feet bsg using 8-inch diameter hollow-stein augers The drill rig and three-man crew were supplied by West Hazmat ' Drilling Corp of Rancho Cordova, California Auger returns generated by drilling were placed on plastic sheeting and stored on site ' Soil samples were collected ahead of the drill bit using a California-Modified split-tube sampler loaded with three pre-cleaned 2-inch by 6-inch brass sleeves The samples were collected at five-foot intervals,beginning at a depth of 15 feet bsg in each boring, using a 140-pound hammer to advance ' the sampler The number of blows required to advance the sampler over each 6-inch increment of the 18-inch sampling interval was recorded on the boring logs Sampling equipment was washed in an Alconox solution and rinsed with water prior to each sampling run to avoid cross-contamination ' For each sample,both ends of the leading sleeve were covered with Teflon sheets, capped and sealed • with tape The samples were labeled, stored on ice and transported under chain-of-custody to Advanced GeoEnvironmental,Inc