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Preliminary Site Assessment Work Plan <br /> January 1997 <br /> NEWFIELD PROPERTY <br /> 107 North School Street <br /> Lodi, California <br /> 10. INTRODUCTION <br /> In accordance with the request of Mr Joseph Newfield, property owner, Advanced <br /> GeoEnvironmental, Inc (AGE) has prepared this Preliminary Site Assessment Work Pian for the <br /> drilling and installation of soil borings and ground water monitoring wells at 107 North School <br /> Street in Lodi, California The scope of Aoik is to investigate the lateral and vertical extent of <br /> hydrocarbon-impacted soil and ground water at the site The location of the site is illustrated in <br /> Figure I - Location AIap A plan of the site is illustrated on Figure 2 - Sue Plan <br /> This Work Plan is prepared in accordance with Saiz Joaquin County Public Health Services - <br /> Environmental Health Division (PHS-EHD) and Central Valley Regional Water Quality Control <br /> Board (CVRWQCB) gui&hnes for the investigation of underground storage tank (UST) sites <br /> 20. BACKGROUND <br />• <br /> 21 SITE LOCATION AND DESCRIPTION <br /> The site is located in a flat, commercial area of central Lodi, San Joaquin County, California, at the <br /> northwest corner of the intersection of North School Street and South Elm Street One structure is <br /> located on the property and presently unoccupied It is our understanding that the property was <br /> formeily occupied by a gasoline service station,the gasoline service station operated until sometime <br /> in the 1970s <br /> 2 2 UNDERGROUND STORAGE TANK REMOVAL <br /> It is our understanding that five USTs were removed from the site on 21 September 1987 The USTs <br /> ranged in volume from 55 to 2,000 gallons and were used to store gasoline and waste oil According <br /> to the PHS-EHD correspondence dated 03 January 1997, soil withing the tank excavations "was <br /> observed to have petroleum odor " <br /> 23 EXCAVATION OF HYDROCARBON-IMPACTED SOIL <br /> In October 1987, an undocumented volume of soil was excavated from the former UST area Field <br />. observations indicated that petroleum-hydrocarbons were detected in soil samples collected from <br />