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O Superior Pre . ision Ana/ytica/ . _ )c. <br /> 1555 Burke, Unit I • San Francisco, California 94124 (4 15) 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 - 1 WSP - 1 ( A-C ) 05 / 20 / 94 05 / 23 / 94 Soil <br /> 15540 - 2 UST-H20 05 / 20 / 94 05 / 25 / 94 Water <br /> 15540 - 3 A-W 05 / 20 / 94 05 / 25 / 94 Soil <br /> 15540 - 4 B -W 05 / 20 / 94 05 / 25 / 94 Soil <br /> 15540 - 5 C-W 05 / 20 / 94 05 / 25 / 94 Soil <br /> 15540 - 6 UST-N 05 / 20 / 94 05 / 25 / 94 Soil <br /> 15540 - 7 C- E 05 / 20 / 94 05 / 25 / 94 Soil <br /> 15540 - 8 B- E 05 / 20 / 94 05 / 25 / 94 Soil <br /> 15540 - 9 A-E 05 / 20 / 94 05 / 27 / 94 Soil <br /> 15540 - 10 UST- S 05 / 20 / 94 05 / 23 / 94 Soil <br /> RESULTS OF ANALYSIS <br /> Laboratory Number : 15540 - 1 15540 - 2 15540 - 3 15540 - 4 15540 - 5 <br /> Gasoline Range * 14 12000 950 650 200 <br /> Benzene : ND< . 005 1200 2 . 7 0 . 39 0 . 40 <br /> Toluene : 0 . 26 1800 5 . 4 2 . 3 0 . 42 <br /> Ethyl Benzene : 0 . 065 250 21 13 4 . 2 <br /> Total Xylenes : 0 . 36 1500 37 35 12 <br /> Diesel : * 80 NA NA NA NA <br /> Oil and Grease : 560 NA NA NA NA <br /> Concentration : mg / kg ug / L mg / kg mg / kg mg / kg <br /> Laboratory Number : 15540 - 6 15540 - 7 15540 - 8 15540 - 9 15540 - 10 <br /> Gasoline_Range : 510 560 750 50 170 <br /> Benzene : 0 . 69 ND< 0 . 25 1 . 1 0 . 08 ND < 0 . 25 <br /> Toluene : 1 . 2 1 . 3 9 . 3 0 . 15 0 . 84 <br /> Ethyl Benzene : 12 6 . 7 13 0 . 34 1 . 4 <br /> Total Xylenes : 40 36 72 1 . 9 1 . 4 <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 1 of 4 <br /> Certified Laboratories <br />