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' Emil's Liquor & SPO • 1405 California Street, Esealon, California Ilay 26, 1993 ' Phase H Report of Findings Page 2 Each soil boring was, upon completion, sealed with granular bentonite from a depth of twenty five feet (25') to a depth of twenty two feet (22'). The remainder of each boring was backfilled by Trimmie method to the surface using a Neat cement and sand grout. All soil cuttings were containerized and stored on-site to await disposition. ' 4.0 Geology ' The stratigraphy of this site is characterized by interbedded sands and silts. The upper sand is a micaceous dark-brown silty sand averaging six feet (6) thick. Underlying this is a very micaceous dark-brown, very sandy, clayey silt averaging six feet (6'). The next sand has an ' upper very micaceous medium to coarse-grained, gravely sand averaging six feet (6) thick, with a lower clean, gravely medium to coarse-grained loose sand averaging four feet (4') thick. The only exception to the otherwise fairly uniform bedding is a two foot (2') thick very sandy, ' clayey silt between the two lower sands in B-1 and B-4 (Figure 3). This silt unit pinches out to the west. The lowest bed is a dark-brown moderately sandy, clayey silt. ' No hydrocarbon odors or water bearing zones were encountered in any boring. Detailed lithologic boring logs can be found in Appendix A. The ground water underlying this site has been determined to be at approximately seventy-eight feet (78') of depth in the local area of ' this site. 5.0 Analytical laboratory and Findings ' Soil samples collected from this investigation were submitted to Geo Monitor Laboratories of Hesperia, California, a state certified laboratory, for analysis. The EPA methods of analysis are EPA method 8020 for Benzene, Toluene, Ethyl-Benzene and Total Xylenes. Total Petroleum Hydrocarbons as Gas and Diesel employ EPA method 8015 modified (LUFT). All soil samples submitted for laboratory analysis appear to be free of petroleum hydrocarbon contamination in the field and were found to be "non-detect" in the laboratory analysis. This is ' supported by the certificate of analysis found in Appendix B of this report. 6.0 Conclusions and Recommendations ' After a complete review of all the data at, hand, from both field and laboratory, no evidence has been found to indicate that the subsurface underlying this site has been impacted in an adverse manner as to pose a threat to the environment or to human health as a result from underground fuel storage tanks, pumps and underground product lines located on this site. Therefore, it is the opinion of the writer that no further investigative work is warranted or necessary at this ' site at this time.