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5431 Grant Line Road, Banta, California April 7, 1994 <br /> 40 Chevron USA Products Company Page 1 <br /> 1.0 INTRODUCTION <br /> This report is submitted by Groundwater Technology, Inc to summarize the methods and results of <br /> additional environmental assessment work conducted at the former Signal Oil service station #221-5 <br /> located at 5431 Grant Line Road in Banta, California (Figures 1 and 2) Three sod borings were drilled to <br /> define the extent of hydrocarbon-impacted sod and groundwater in the vicinity of the former <br /> underground storage tanks (USTs) Two of the three borings were drilled to accommodate installation of <br /> temporary groundwater monitoring wells TW-1 and TW-2 (Figure 2) In addition to drilling, the work <br /> scope included sod and groundwater sampling, laboratory analysis of selected sod and groundwater <br /> samples, and preparation of this report <br /> This report summarizes the work steps completed at the site January 5 and 6, 1994, as outlined in <br /> Groundwater Technology's Work Plan for Soil and Groundwater Assessment, dated October 25, 1993, <br /> accepted by the San Joaquin County Public Health Services, Environmental Health Division <br /> (SJCPHS-EHD) <br /> LJ'-'W GROUNDWATER <br /> 4894cna RPT � 1'1 TECHNOLOGY <br />