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CAM 13RIA <br /> EPA Method 8260B Groundwater samples from the wells were <br /> also analyzed for ethanol by EPA Method 8260B <br /> Soil Disposal Approximately 12 cubic yards of soil were generated during <br /> field activities, stored onsite, and covered with plastic sheeting <br /> The soil stockpile was sampled and profiled for disposal <br /> (laboratory data in Appendix E) On November 29, 2001, <br /> Manley and Sons Trucking, Inc of Sacramento, California <br /> transported the soil to Allied Waste Industries' Forward Landfill <br /> in Manteca, California for disposal <br /> Well Materials Wells MW-2 through MW-4 were constructed using four-inch <br /> diameter, Schedule 40 PVC casing with a screen slot size of <br /> 0 020-inch and#2/12 Monterey sand <br /> Screened Interval. Wells MW-2 through MW-4 are screened from 47 to 72 fbg <br /> Monitoring well construction details are presented on Table 1 <br /> and recorded on the exploratory boring logs (Appendix C) <br /> Well Development/Sampling Blaine developed and purged wells MW-2 through MW-4 on <br /> November 14, 2001 and sampled the site wells on <br /> November 16, 2001 Blaine developed the wells using surge <br /> block agitation and pump evacuation Blaine's groundwater <br /> monitoring and well development report, which includes field <br /> sheets, is presented as Appendix D <br /> Wellhead Survey Virgil Chavez Land Surveying (licensed land surveyor <br /> No 6323) of Vallejo, California surveyed the top of casing <br /> elevations for wells MW-1 through MW`4 relative to mean sea <br /> Ievel on December 20, 2001 (Appendix F) <br /> Groundwater Flow Direction Cambria evaluated water-level measurement data from <br /> November 16, 2001 and prepared a groundwater contour map <br /> (Figure 3) Groundwater flow direction is to the northwest this <br /> quarter at an approximate hydraulic gradient of 0 1 <br /> • <br /> 1359 5 <br />