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KLEINFELDER <br /> I r <br /> File No. 23480020.D00 <br /> August 26, 1994 <br /> II <br /> was used to screen the samples in the field. A photo-ionization detector (PID) was used to <br /> measure total ionizable compounds in parts per million by volume (ppmv) of vapor. <br /> !� Each soil sample obtained in the borings was screened in the field, and the PID readings were <br /> recorded on the boring logs. PID readings ranged from 0 to 1222 ppmv. The highest readings <br /> 1 were encountered in Boring B- 1 , closer to the southern tank. Hydrocarbon odors were also <br /> present in the soil samples from Borings B- 1 and B-2. <br /> For the protection of the field crew, the PID was also used to measure the total ionizable <br /> j concentration in the breathing zone prior to and while drilling the borings. No consistent readings <br /> were noted in the breathing zone above 1 ppmv. <br /> J <br /> I�I <br /> I iF—I <br /> LJ <br /> J <br /> E777.ind 7EI94 <br /> Copyright 1994 HIeinfemer, Inc, Page 9 of 14 <br />