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Superior Precision Ana/ytica/, Inc_ <br /> 825 Arnold Drive Suite 1 14 • Martinez California 94553 ■ (510) 229-1512 /fax (510) 229-1526 <br /> WESTERN GEO ENGINEERS Project R-604 <br /> Attn GEORGE CONVERSE Reported 09/23/93 <br /> TOTAL PETROLEUM HYDROCARBONS <br /> Lab ## Sample Identification Sampled Analyzed Matrix <br /> 89994- 1 MW-1 09/15/93 09/23/93 Water <br /> 89994- 2 MW-2 09/15/93 09/23/93 Water <br /> 89994- 3 MW-3 09/15/93 09/23/93 Water <br /> 89994- 4 MW-4 09/15/93 09/23/93 Water <br /> 89994- 5 MW-5 09/15/93 09/23/93 Water <br /> 89994- 6 MW-6 09/15/93 09/23/93 Water <br /> 89994- 7 MW-7 09/15/93 09/23/93 Water <br /> RESULTS OF ANALYSIS <br /> Laboratory Number 89994- 1 89994- 2 89994- 3 89994- 4 89994- 5 <br /> Gasoline ND<50 260* ND<50 ND<50 86 <br /> Benzene ND<0 . 3 ND<O 3 ND<O 3 ND<O 3 ND<O 3 <br /> Wluene ND<O 3 ND<O 3 ND<O 3 ND<O 3 ND<O 3 <br /> hyl Benzene ND<O 3 ND<O 3 ND<O 3 ND<O 3 0 7 <br /> Total Xylenes ND<O 9 ND<O 9 ND<O 9 ND<O 9 14 <br /> Concentration ug/L ug/L ug/L ug/L ug/L <br /> Laboratory Number 89994- 6 89994- 7 <br /> i <br /> i <br /> Gasoline ND<50 ND<50 <br /> Benzene ND<O 3 ND<O 3 <br /> Toluene ND<O 3 ND<O 3 <br /> Ethyl Benzene ND<O 3 ND<O 3 <br /> Total Xylenes ND<0 . 9 ND<O 9 <br /> Concentration ug/L ug/L <br /> * Gasoline range concentration reported The chromatogram shows only a <br /> single peak in the gasoline range <br /> Page 1 of 2 <br /> Certified laboratories <br />