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Superior Fre` ision Analytical. J. c. <br /> 1555 Burke, Unit I • San Francisco, California 94124 (4 15) 647-2081 / fax (4 15) 821 -7 123 <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 - 21 SP- 3 ( A&B ) 05 / 20 / 94 05 / 27 / 94 Soil <br /> 15540 -22 SP - 4 ( A& B ) 05 / 20 / 94 05 / 27 / 94 Soil <br /> 15540 - 23 SP- 5 ( A&B ) 05 / 20 / 94 05 / 27 / 94 Soil <br /> 15540 - 24 SP- 6 ( A &B ) 05 / 20 / 94 05 / 27 / 94 Soil <br /> RESULTS OF ANALYSIS <br /> Laboratory Number : 15540 - 21 15540 - 22 15540 -23 15540 - 24 <br /> Gasoline_Range : 110 21 3 7 <br /> Benzene : 0 . 21 0 . 16 0 . 010 ND< 0 . 02 <br /> Toluene : 0 . 64 ND< 0 . 05 0 . 012 0 . 069 <br /> Ethyl Benzene : 2 . 1 0 . 45 ND< . 005 0 . 040 <br /> Total Xylenes : 14 0 . 95 0 . 040 0 . 24 <br /> Diesel : NA NA NA NA <br /> Oil and Grease : NA NA NA NA <br /> Concentration : mg / kg mg / kg mg/ kg mg / kg <br /> * Does not match typical diesel pattern . <br /> Page 3 of 4 <br /> Certified Laboratories <br />