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• <br /> In early May 1991, HLDC had the two tank excavations backfilled with the stockpiled soil <br /> • <br /> • to provide access for exploratory equipment and for personnel safety On 18 and <br /> 24 .lune 1991, AEMC drilled six soil borings to define the lateral and vertical extent of the <br /> diesel contamination within the tank backfill area and one nearby location (Figure 3) The <br /> • locations of the soil borings and levels of hydrocarbon contamination were characterized in <br /> an AEMC document submitted on 29 August 1991 entitled "Phase II Investigation and <br /> Evaluation Report" <br /> • <br />• <br />• <br />• <br />• <br />• <br /> rlh]d ta("d) Page 4 <br />• AMERICAN <br />