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to BREA AG SERVICE - 2 pit 4. However, test pit 2 had diesel and kerosene concentrations ranging from 2400 to 6500 mg/kg. 7. September 1991. Kleinfelder excavated the area surrounding test pit 2. The excavation was approximately 24' deep by 18' long by 15' wide. During excavation, additional soil was removed due to high PID readings. The excavated soil was stockpiled with the soil previously removed from the four test pits. Twenty-one soil samples were collected from the excavation and analyzed for TPH. TPH was not found in the east or north walls, and only very low concentrations were found in the west wall. However, residual concentrations of diesel and kerosene are still present at a depth of 241. The Regional Board approved leaving the remaining soil in place, on the condition that future groundwater samples be analyzed for TPH and volatile organic compounds. 8. Winter 1991-1992. Brea Ag finished installing a concrete pad over the area of the soil investigation. They can now finish building their liquid fertilizer containment area. Appendix B of the "Soil Excavation Report" contains a record of correspondence and meetings between Kleinfelder and the Regional Board. Kleinfelder consulted with Board staff during each phase, and received Board approval before each new step. The report itself contains no information that has not already been reviewed and approved by staff. Therefore, this report is approved. Now that the soil contamination is cleaned up, Brea Ag must turn its attention to the groundwater contamination documented during the July 1991 assessment (see 4, above). In a meeting on 20 August 1991, staff discussed with Brea Ag the need to begin a groundwater assessment. It was decided that Brea could complete the soil cleanup before groundwater work began. I do have a question as to what Brea plans to do with all the soil they excavated and stockpiled in September 1991.