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QUARTERLY REPORT <br /> March 1996 <br /> Lammersville School District <br /> 16555 West Von Sosten Road <br /> Tracy, California <br /> 1.0. INTRODUCTION AND SCOPE OF WORK <br /> In accordance with a request from Mr Kenneth Olds of the Lammersville School District (LSD), <br /> Advanced GeoEnvironmental, Inc (AGE)has prepared this Quarterly Report detailing field activities <br /> performed at 16555 West Von Sosten Road, Tracy, California (the site) The scope of work included <br /> quarterly monitoring and sampling of two existing ground water monitoring wells in March 1996 The <br /> location of the site is illustrated in Figure 1 - Location Map A plan of the site is illustrated in Figure <br /> 2 - Site Plan <br /> Monitoring and sampling activities were conducted in accordance with San Joaquin County Public <br /> Health Services - Environmental Health Division (PHS-EHD) and Central Valley Regional Water <br /> Quality Control Board guidelines for the investigation of UST sites <br /> 20. BACKGROUND <br /> 21 SITE LOCATION <br /> The property is located at the northwest corner of the intersection of Von Sosten Road and Hansen <br /> Road in a rural area northwest of Tracy in San Joaquin County, California, covering an area of <br /> approximately I0 acres The maintenance yard, which is the area of concern, is situated on the eastern <br /> portion of the property along Hansen Road The Lammersville Elementary School yard is located <br /> immediately to the west and south of the site A maintenance garage and house are located near the <br /> northeast comer of the site,two USTs were formerly located in this area The tanks were used to fuel <br /> school vehicles (Figure 2) <br /> 2 2 UNDERGROUND STORAGE TANK REMOVAL <br /> LSD operated one 550-gallon regular gasoline UST and one 2,000-gallon diesel UST at the site The <br /> gasoline UST was removed in December 1986, the diesel UST was removed in March 1989 <br /> Laboratory analysis of samples collected beneath the gasoline UST indicated the presence of a <br /> hydrocarbon release No samples were collected beneath the diesel UST following its removal Based <br /> upon the shallow depth to ground water at the site, the PHS-END required a subsurface investigation <br /> of the former UST areas <br /> i <br />