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�i <br /> 1 O <br /> Superior Precision Ana/yticai, -Inc <br /> 1555 Burke, Unit I • San Francisco. California 94124 • 41 5) 647-2081 / fax 41 5) 82 1-7 123 <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 />