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EliSuperior PrecisionAnalytical, If7c. <br /> 825 Arnold Drive Suite 1 14 - Martinez California 94553 - (510) 229-1512 / fax (510) 229-1526 <br /> TOUCHSTONE DEVELOPMENTS Project 6465-2 <br /> Attn JEFF MONROE Reported 05/19/93 <br /> TOTAL PETROLEUM HYDROCARBONS <br /> Lab # Sample Identification Sampled Analyzed Matrix <br /> 88634- 1 TX-20 05/18/93 05/18/93 Soil <br /> 88634- 2 TB-8 05/18/93 05/18/93 Soil <br /> 88634- 3 TX-21 05/18/93 05/19/93 Soil <br /> 88634- 4 TX-22 05/18/93 05/19/93 Soil <br /> 88634- 5 TX-23 05/18/93 05/19/93 Soil <br /> 88634- 6 SP-33A-D 05/18/93 05/18/93 Soil <br /> 88634- 7 SP-34A-D 05/16/93 05/18/93 Soil <br /> 88634- 8 SP-35A-D 05/18/93 05/19/93 Somal <br /> 88634- 9 SP-36A-D 05/1.8/93 05/19/93 Soil <br /> RESULTS OF ANALYSIS <br /> aboratory Number. 88634- 1 88634- 2 88 34- 3 88634- 4 88634- 5 <br /> Gasoline ND<1 ND<1 3 ND<1 1 <br /> Benzene ND< 005 ND< 005 ND< . 012* ND< 005 ND< . 005 <br /> Toluene ND< 005 ND< 005 ND< 012* ND< 005 ND< 005 <br /> Ethyl Benzene ND< 005 ND< 005 ND< 012* ND< 005 0 010 <br /> Xylenes ND< 015 ND< 015 ND< 036* ND< 005 0 033 <br /> Concentration mg/Kg mg/Kg mg/Kg mg/Kg mg/Kg <br /> Laboratory Number 886 -6 88634-7 8863 -8 88 34-9 <br /> -- -- -- -- ------- -------- - ----__ - - - ----- -- - ------- ------------ <br /> Gasoline : ND<1 ND<1 ND<1 ND<1 <br /> Benzene . ND< . 005 0 006 ND< . 005 ND< 005 <br /> Toluene ND< . 005 0 005 ND< . 005 0 . 006 <br /> Ethyl Benzene - 0 008 0 . 007 ND< . 005 0 008 <br /> Xylenes 0 025 0 022 ND< 015 0 026 <br /> Concentration mg/kg mg/kg mg/kg mg/kg <br /> * Detection Limit for BTXE was raised due to matrix effect <br /> 0 Page 1 of 2 <br /> Certified Laboratories <br />