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investigation of the aerial extent of the contaminated soil and in planning the position of the monitoring wells. In January 1990 three monitoring wells were installed. They were reported in our report dated February 9, 1990, In March and April 1992, three more monitoring wells were installed. They were necessary because the groundwater had fallen below the depth of the original wells. This work was reported in our report dated April 30, 1992. In July 1993 we installed two additional monitoring wells and drilled one boring. This work was reported in our report dated August 24, 1993 . In September 1994, we installed three additional monitoring wells. This work was reported in our report dated October 10, 1994. In April 1995 we drilled two CPT borings and they were reported in our report dated March 15, 1995 , In February and March, 1996 five vapor extraction wells, one air sparging well and one boring were installed at this site. This work was reported in our report dated March 19, 1996, In April 1996 we drilled two additional CPT borings. They were reported in our report dated June 10, 1996, In July 1999, we drilled an additional monitoring well MW-12 to 80 feet. This was reported in our report dated August 5, 1999. On November 6, 2000 we drilled two borings (B-2 and B-3) to a depth of 90 Feet Bgs and 100 Feet Bgs. This was reported on our report dated December 14, 2000. On November 17, 2003, we submitted a Amended Site Concept Model. On July 20, 2005, we drilled one boring and two monitoring well (B-4, MW- 14 and MW- 16) to a depth of 158 feet bgs for the borings and 50 feet bgs for the two monitoring wells. This was reported in the Drilling Report dated August 24, 2005. Following a meeting with the County regarding the residual soil contamination at the site, the County has issued a directive to conduct a vapor extraction pilot test. Five vapor extraction wells ( VW- 1 , VW- 3, VW- 4, VW- 5 and VW- 6 ) are currently installed and will be used to conduct a soil vapor extraction test to determine if subsurface conditions are currently favorable to soil vapor extraction as a continued remedial option. WORKPLAN California Geophysical Group, Inc. now proposes to conduct a two day soil vapor extraction test to determine if subsurface conditions are still favorable and conducive to continuing soil vapor extraction on the contamination plume at this site. Also this test will determine the feasibility of continuing the soil vapor extraction at a soil remediation option and, if appropriate, to determine