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CAMBRIA January 28, 2003, Philip West Industrial Services, Inc of Benicia, California transported the soil to Alred Waste Industries' Forward Landfill in Manteca, California for disposal Well Materials. Wells S-1-85, 5-3-84, and 5-4-83 were constructed using two- inch diameter, Schedule 40 PVC casing with a screen slot size of 0 020-inch and#2112 Monterey sand Well 5-1-85 has a 10 75" OD steel conductor casing installed from 0 5 to 60 5 fbg Well Naming Convention The groundwater monitoring wells installed during this investigation were given well names that are not typical for monitoring wells Since these wells have deeper screened intervals and were installed in groups, we added a number to the end of the well name to differentiate these wells from each other This extra number indicates the depth of the bottom of the screened interval For example well 5-1-85 is part of the MW-1 well cluster and the bottom of its screened interval is 8s fbg Screened Interval Well 5-1-85 is screened from 75 to 85 fbg, well 5-3-84 is screened from 74 to 84 fbg, well 5-4-83 is screened from 73 to 83 fbg Monitoring well construction details are presented on Table 1 and recorded on the exploratory boring logs (Appendix B) Well Development/Sam lin Blaine developed and purged the new wells -1- - P � p p g S 85, S 3 84, and 5-4-83 on December 31, 2002 and sampled the site wells on January 6, 2003 Blaine developed the new wells using surge block agitation and pump evacuation Blaine's groundwater monitoring and well development report, which includes field sheets, is presented as Appendix D Wellhead Survey Virgil Chavez Land Surveying of Vallejo, California surveyed the elevation and location of the new wells on December 23, 2002 This survey was performed to comply with the State of California Geotracker requirements The surveyor's report is included in Appendix E 0797 4