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Thrifty O11 Company Job No: 13-6782-026-00-00 <br /> January 7, 1988 Log No: HTC--7-1398 <br /> Page 6 <br /> 4 .0 FINDINGS <br /> Petroleum odors were noted in Borings B-2, B-3 and B-4 . <br /> ' Elevated organic vapor meter readings were detected from <br /> soil samples recovered from Borings B-3 and B--4 . Possible <br /> ' discoloration of soil from a gray color to a black color was <br /> noted in Boring B-3 at a depth of 5 ' . Discoloration was not <br /> ' observed in any other recovered soil sample . <br /> Soil samples recovered from Borings B-2, B-3 and B-4 at <br /> depths of 10 and 20 feet below grade were submitted for <br /> laboratory analysis . Elevated concentrations of total <br /> petroleum hydrocarbons were detected from a soil sample <br /> recovered from Boring B-4 at a depth of 10 feet. All other <br /> soil samples which were analyzed did not contain detectable <br /> concentrations of total petroleum hydrocarbons . Table II <br /> presents the results of soil laboratory analyses . <br /> 1 <br /> TABLE II <br /> ' RESULTS OF LABORATORY ANALYSES <br /> SOIL SAMPLES <br /> ' Total Petroleum <br /> Sample Hydrocarbons <br /> Boring Depth (EPA 8015 Modified) <br /> ' Number ( in feet ) _ m /k _ <br /> B-2 10 <10 <br /> B-2 20 <10 <br /> ' B-3 10 <10 <br /> B-3 20 <10 <br /> B-4 10 1, 983 <br /> B-4 20 <10 <br />