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Y t � I 4 C A M B R I A converted into groundwater monitoring wells. Boring and well specifications are presented in Table 1 and their locations are shown on Figure 2. Boring Depths: Boring depths were approximately 25 fbg for wells MW-5 and MW-6,20 fbg for well MW-7,and 86 fbg for boring SB-1. i` Sampling Methods: Soil types in the HSA borings were logged using the Unified Soil Classification System and Munsell Soil Color Charts. Encountered soil is described on the exploratory boring log presented in Appendix B. Soil samples from this boring were collected at 5-foot intervals for description' and potential chemical analysis. Soil types in boring SB-1 were electronically logged using CPT logging equipment. Encountered soils are described on the CPT logs presented in Appendix C. Three groundwater samples were collected from boring SB-1 at depths of approximately 52, 72,and 82 fbg for chemical analyses. These sample depths were selected based on the CPT boring log. These depths correspond with coarse-grained sediment and sediments that could yield a f water sample. I Groundwater Depths: First encountered groundwater was observed in.borings MW-5 through MW-7 at approximately 13.5, 14, and 10 fbg, respectively,during drilling activities. k Soil Types: Soil encountered during - drilling activities consisted predominantly of fine-grained layers of silty clay, clay, clayey silt,sandy silt,and silt(ML)interspersed with occasional coarse- grained layers of silty sand, (SM), gravelly sand(SW), and sand (SP)to the total explored depth of 86 fbg(Appendix B). 4 Soil Disposal. Soil-generated during field activities was stockpiled onsite, covered with plastic sheeting, sampled,and profiled for disposal. i On March 3 and March 31, 2005, Manley and Sons Trucking, Inc. (Manley) of Sacramento, California transported 1.33 and 1 1661 4