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ui JI CAMBRIA California measured groundwater in wells MW-I through MW-5 at depths ranging from 41 16 to 42 58 fbg on January 22, 2003 Blaine's well gauging data is included in Appendix C Soil Types: Soil types encountered during drilling consisted predominantly of silt, clayey silt, sandy gravelly silt, and sandy silt (ML) to the total depth explored of 56 5 fbg Boring MW-4 contained a layer of silty sand (SM) from 50 to 50 5 fbg Soil types from the well borings are recorded on the boring logs (Appendix B) and on the Geological Cross Sections (Figures 4 and 5) Chemical Analyses. Selected soil and groundwater samples from the well borings were analyzed for total petroleum hydrocarbons as gasoline (TPHg), benzene, toluene, ethylbenzene, and xylenes (BTEX), and fuel oxygenates (methyl tertiary butyl ether [MTBE], di-isopropyl ether, tertiary amyl methyl ether, ethyl tertiary butyl ether, tertiary butyl alcohol, ethanol, and methanol) and lead scavengers (1,2-dichloroethane [1,2-DCA] and 1,2-dibromoethane [EDB])by EPA Method 8260B Soil Disposal Approximately 7 78 tons of soil were generated during field activities, stored onsite, and covered with plastic sheeting The soil stockpile was sampled and profiled for disposal (Appendix D) On January 13, 2003, Manley and Sons Trucking, Inc of Sacramento, California transported the soil to Allied Waste Industries' Forward Landfill in Manteca, California for disposal Well Materials Wells MW-1 through MW-5 were constructed using two-inch diameter, Schedule 40 PVC casing with a screen slot size of _ 0 020-inch and#2/12 Monterey sand Screened Interval: Wells MW-1 through MW-5 are screened from 38 to 53 fbg Monitoring well construction details are presented on Table 1 and recorded on the exploratory boring logs (Appendix B) Well Development/Sampling- Blaine developed and purged wells MW-1 through MW-5 on January 14, 2003 and sampled the wells on January 22, 2003 1511 3