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1.0 INTRODUCTION At the request of Mr Raymond Greer, BSK & Associates (BSK) performed a soil and groundwater investigation to further delineate the extent of petroleum hydrocarbons in soil and groundwater in the vicinity of former on-site underground fuel storage tanks (USTs) Hydrocarbon-impacted soils were originally revealed by sampling and chemical analyses during the removal of USTs from the property, and during ensuing investigation of the site Site information is as follows Site Location 15634 Steinegul Road Escalon, California Project Contact Mr Brian Greer 1111 First Street Escalon, California 95320 (209) 838-3593 2.0 SITE DESCRIPTION AND HISTORY 2.1 Site Description The site is a private residence located at 15634 Stelnegul Road in the City of Escalon The subject property, comprising approximately 135 acres, is identified as San Joaquin County APN 229-120-04 Figure 1 presents a Vicinity Map of the site The site includes a residence, workshop/garage, and adjacent pasture Figure 2, Site Plan, illustrates the developed portion of the Site The site is bounded by Stemegul Road to the west, a residence to the north, and pasture to the south and east Topography of the area is generally flat 2.2 Project History Two regular gasoline underground storage tanks (USTs) and a fuel dispenser island were located between the residence and the workshop, at the approximate locations shown in Figure 2 The USTs had capacities of 550 and 1,000 gallons In September 1986, Precision Industries, Inc conducted precision testing on the two USTs The 550-gallon UST failed and the 1,000-gallon UST passed within the State guidelines In May 1987 the USTs were exhumed and removed from the Site under permit The USTs were hauled by H&H Ship Service Company to the Levin Metals Corporation disposal site in Richmond, California Intenm Report-07400I78-May 1999 1