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Page 2 <br /> lie Mr Michael lnfuma Jr <br /> August 1, 1997 <br /> UST Removal <br /> The former 1,000-gallon UST was removed in December 1990 Philip, then <br /> known as John Mathes &Associates, provided oversight during the removal The <br /> UST was located beneath the sidewalk in front of the property building along <br /> South Center Street Observations made during the removal indicated that the <br /> UST was in good structural condition with no apparent holes or leakage <br /> Evidence contained in Philip's files indicates that the product piping was removed <br /> from the UST to the property building, where it continued under the building slab <br /> to the fuel dispenser located within the building The fuel dispenser was also <br /> removed The photograph contained in Appendix A and field notes indicate that <br /> the remaining product line was grouted in place and capped <br /> Approximately 18 cubic yards of excavated soil was stockpiled by the property <br /> building along Third Street This soil was properly disposed of to the Forward <br /> Landfill in Manteca, California on June 6, 1995 Documentation of soil disposal is <br /> contained in Appendix B <br /> Following the UST removal, four soil samples were collected from the bottom of <br /> the excavation (see Figure 1) These samples, designated STK-1N, STK-IE, STK- <br /> IS, and STK-1 W were collected from the northern, eastern, southern, and western <br /> areas of the tank pit, respectively Two soil samples, designated STK-PPI and <br /> STK-PP2 were collected on January 23, 1991 beneath the alignment of the <br /> product piping Samples were analyzed for total petroleum hydrocarbons-gasoline <br /> (TPH-G), benzene, toluene, ethylbenzene, and xylene (BTEX) constituents <br /> Analytical results are tabulated below <br /> Soil Sample Analytical Results <br /> (Reported As Milligrams Per Kilo rani) <br /> Sample Benzene Toluene Ethylbenzene Xylenes TPH-G <br /> STK-lN 42 37 38 710 4,600 <br /> STK-1E <0 005 0 006 <0 005 0 007 < 1 0 <br /> STK-1S 35 450 240 1,600 9,600 <br /> STK-1W <0 005 <0 005 <0 005 0 007 < 1 0 <br /> STK-PP L <0 005 <0 005 <0 005 <0 005 < 10 <br /> 10 STK-PP2 <0005 <0 005 <0 005 <0 005 < 10 <br />