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' kTj KLEINFELDER A total of 11 soil samples were collected from the two soil borings. Table 2 summarizes the soil samples collected. The sample identification numbers and depths also are shown on the boring logs in Appendix B. Six of the 11 soil samples (three from each boring) were selected for laboratory analysis. The samples were selected based on field observations, qualitative organic vapor screening results, and the depth in the boring. ' To provide a qualitative indication of volatile organic compounds, an organic vapor detector utilizing a PID was used to field screen the soil samples collected from each ' boring. The PID measures total ionizable compounds in the air in parts per million by volume (ppmv). This qualitative field screening was one of the criteria used to select samples from each boring to be submitted for quantitative analysis. ' Each sample was screened in the field, and the PID readings were recorded on the boring logs. The soil samples collected from B-1 had PID readings ranging from 125 to 11 ppmv. The PID readings from B-2 ranged from 60 to 0 ppmv. In both borings, PID readings decreased with depth. Drill cuttings from the borings were contained in 55-gallon drums left on site. The drums are labeled with the boring number, date filled, and the word "soil' in yellow paint. Soil in the drums includes near surface soil that had higher organic vapor screening results than the soil samples that were submitted for laboratory analysis. Consequently, the soil in the drums may contain petroleum hydrocarbons and will require proper treatment or disposal. Additional sampling of the drums may be required for disposal of the contained soil cuttings. Upon completion of the drilling and sampling, the borings were backfilled with ' cement/bentonite grout. FR1-92-15 Page 8 of 21 Copyright 1992 Meinfelder, Inc.