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Ms. Tammy Hodge CAMBRIA <br /> November 1, 1996 <br /> tank. All these tanks were steel. The July 1993 excavation was also used to remove five additional tanks. The <br /> available files do not contain any information regarding the size or nature of these five tanks. <br /> Over-Excavation During Tank Removal. The waste oil tank pit was over-excavated after it was removed. <br /> Since ground water was encountered during the excavation of the three known gasoline storage tanks and five <br /> unknown tanks, soil was only over-excavated an additional 1.5 feet(ft)in these tank pits. Additional details <br /> are documented later in this report. <br /> REPORT LIST <br /> The following investigation and other reports were included in the Chevron file and were reviewed as part of <br /> this site summary. Correspondence between Chevron and the regulatory agency and quarterly monitoring <br /> reports are not listed but were reviewed. <br /> Report List <br /> Date Consultant Report Title Work Performed <br /> 02/06/92 GeoStratcgics inc. Tank Removal Observation Removed the 550-gallon waste oil <br /> Report tank,collected soil samples from the <br /> tank pit and over-excavated the tank <br /> pit <br /> 01/07/93 Ground Water Environmental Assessment Drilled soil borings S13-1 through SB- <br /> Technology,Inc. Report 6,collected and analyzed soil samples <br /> and installed monitoring wells MW-1 <br /> through MW-3 <br /> 08/10/93 American Consulting Tank Removal-Soil Removed the three gasoline USTs and <br /> Remediation and Sampling Report the five additional tanks,sampled and <br /> Construction analyzed soil samples collected from <br /> the tank pit <br /> 09/08/93 Construction Materials Results of Compaction Soil Soil compaction tests on imported soil <br /> Testing, Inc. Testing placed in the tank excavation <br /> 04/26/95 Ground Water Environmental Assessment Drilled and installed monitoring wells <br /> Technology,Inc. Report MW-4 and MW-5,collected and <br /> analyzed soil samples <br /> 2 <br />