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o Superior Precision Ana/OVVCa/, Inc. <br />1555 Burke Unit 1 ■ San Francisco California 94124 ■ (415) 647-2081 / fax (4 15) 82 1-7123 <br />TOUCHSTONE DEVELOPMENTS <br />Attn: MICHAEL TAMBRONI <br />ILab # <br />Project 0959-1 <br />Reported 07/20/93 <br />TOTAL PETROLEUM HYDROCARBONS <br />Sample Identification Sampled Analyzed Matrix <br />14582- <br />1 <br />OX -1-5' <br />07/12/93 <br />07/13/93 <br />Soil <br />14582- <br />2 <br />OX -2-8' <br />07/12/93 <br />07/16/93 <br />Soil <br />14582- <br />3 <br />OX -3-5' <br />07/12/93 <br />07/13/93 <br />Soil <br />14582- <br />4 <br />OX -4-8' <br />07/12/93 <br />07/13/93 <br />Soil <br />14582- <br />5 <br />OX -5-5' <br />07/12/93 <br />07/13/93 <br />Soil <br />14582- <br />6 <br />OX -6-5' <br />07/12/93 <br />07/13/93 <br />Soil <br />14582- <br />7 <br />OX -7-8' <br />07/12/93 <br />07/13/93 <br />Soil <br />14582- <br />8 <br />OX -8-8' <br />07/12/93 <br />07/13/93 <br />Soil <br />RESULTS OF ANALYSIS <br />' Laboratory Number: 14582- 1 14582- 2 14582- 3 14582- 4 14582- 5 <br />Psoline: <br />nzene: <br />Toluene. <br />,Ethyl Benzene: <br />Xylenes: <br />Concentration: <br />ND<1 <br />8 <br />67 <br />110 <br />ND<1 <br />0.010 <br />0.020 <br />ND<.025 <br />0.16 <br />ND<.005 <br />ND<.005 <br />0.005 <br />0.079 <br />1.3 <br />ND<.005 <br />0.006 <br />0.023 <br />0.64 <br />1.7 <br />ND<.005 <br />0.028 <br />0.057 <br />2.6 <br />8.4 <br />ND<.015 <br />mg/kg <br />mg/kg <br />mg/kg <br />mg/kg <br />mg/kg <br />Laboratory Number: 14582- 6 14582- 7 14582- 8 <br />Gasoline: <br />ND<1 <br />ND<1 <br />ND<1 <br />Benzene: <br />ND<.005 <br />ND<.005 <br />ND<.005 <br />Toluene: <br />ND<.005 <br />ND<.005 <br />ND<.005 <br />Ethyl Benzene: <br />ND<.005 <br />ND<.005 <br />ND<.005 <br />Xylenes: <br />ND<.015 <br />ND<.015 <br />ND<.015 <br />r Concentration: <br />mg/kg mg/kg mg/kg <br />Page 1 of 2 <br />Certified Laboratories <br />