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Superior Pre ,.JsionAnaiytica/ Jc <br /> 1555 BpBurke, Unit I • San Francisco, California 94124 (415) 647-2081 / fax (4 15) 821 7123 <br /> TOUCHSTONE DEVELOPMENTS Project 8632 - 1 <br /> Attn : JEFF MONROE Reported 05 / 28 / 94 <br /> TOTAL PETROLEUM HYDROCARBONS <br /> Lab # Sample Identification Sampled Analyzed Matrix <br /> 15540 - 11 WO-E 05 / 20 / 94 05 / 26 / 94 Soil <br /> 15540 - 12 WO-W 05 / 20 / 94 05 / 25 / 94 Soil <br /> 15540 - 13 SUMP 05 / 20 / 94 05 / 25 / 94 Soil <br /> 15540 - 14 HOIST 05 / 20 / 94 05 / 21 / 94 Soil <br /> 15540 - 15 P- 1 05 / 20 / 94 05 / 26 / 94 Soil <br /> 15540 - 16 P- 2 05 / 20 / 94 05 / 27 / 94 Soil <br /> 15540 - 17 P - 3 05 / 20 / 94 05 / 27 / 94 Soil <br /> 15540 - 18 P - 4 05 / 20 / 94 05 / 27 / 94 Soil <br /> 15540 - 19 SP - 1 ( A& B ) 05 / 20 / 94 05 / 27 / 94 Soil <br /> 15540 - 20 SP- 2 ( A & B ) 05 / 20 / 94 05 / 27 / 94 Soil <br /> RESULTS OF ANALYSIS <br /> Laboratory Number : 15540 - 11 15540 - 12 15540 - 13 15540 - 14 15540 - 15 <br /> Gasoline_Range : 20 140 220 NA 1 <br /> Benzene : 0 . 10 0 . 73 1 . 3 NA 0 . 069 <br /> Toluene : 0 . 10 0 . 66 2 . 5 NA 0 . 013 <br /> Ethyl Benzene : 0 . 35 3 . 2 2 . 9 NA 0 . 010 <br /> Total Xylenes : 0 . 59 13 4 . 6 NA 0 . 025 <br /> Diesel : * 180 * 1700 * 2100 NA NA <br /> Oil and Grease : 510 5200 4700 ND < 50 NA <br /> Concentration : mg / kg mg / kg mg / kg mg / kg mg / kg <br /> Laboratory Number : 15540 - 16 15540 - 17 15540 - 18 15540 - 19 15540 - 20 <br /> Gasoline Range : 40 620 760 100 10 <br /> Benzene : 0 . 66 0 . 74 1 . 3 0 . 18 0 . 04 <br /> Toluene : 0 . 41 7 . 5 8 . 4 1 . 1 0 . 06 <br /> Ethyl Benzene : 1 . 5 16 14 1 . 7 0 . 06 <br /> Total Xylenes : 0 . 67 66 75 10 0 . 25 <br /> Diesel : NA NA NA NA NA <br /> Oil and Grease : NA NA NA NA NA <br /> Concentration : mg / kg mg / kg mg / kg mg / kg mg / kg <br /> Page 2 of 4 <br /> Certified Laboratories <br />