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o Superior Precision Analytical. Inc_ <br /> 1555 Burke Unit I ■ San Francisco California 94124 ■ (4 15) 647-2081 / fax f41 5) 82 1-7 123 <br /> ti <br /> WESTERN GEO--ENGINEERING Project R604 <br /> Attn: GEORGE CONVERSE Reported 04/06/93 <br /> TOTAL PETROLEUM HYDROCARBONS <br /> Lab # Sample Identification Sampled Analyzed Matrix <br /> 56237- 1 14W-1 03/30/93 04/05/93 Water <br /> 56237- 2 MW-2 03/30/93 04/01/93 Water <br /> 56237- 3 MW-3 03/30/93 04/01/93 Water <br /> 56237- 4 MW-4 03/30/93 04/01/93 Water <br /> 56237- 5 MW-5 03/30/93 04/05/93 Water <br /> 56237-- 6 MW-6 03/30/93 04/01/93 Water <br /> 56237- 7 MW-7 03/30/93 04/01/93 Water <br /> RESULTS OF ANALYSIS <br /> Laboratory Number: 56237- 1 56237- 2 56237- 3 56237- 4 56237- 5 <br /> Gasoline: ND<50 * 360 ND<50 ND<50 370 <br /> Benzene: ND<0. 3 ND<0. 3 ND<0 . 3 ND<0. 3 0 . 4 <br />�. Toluene: ND<0. 3 ND<0. 3 ND<0. 3 ND<0 . 3 ND<0. 3 <br /> Ethyl Benzene: ND<0. 3 ND<0. 3 ND<0. 3 ND<0. 3 4 . 3 <br /> Xylenes: ND<0.9 ND<0. 9 ND<0. 9 ND<0 . 9 56 <br /> Concentration: ug/L ug/L ug/L ug/L ug/L <br /> Laboratory Number: 56237- 6 56237- 7 <br /> Gasoline: ND<50 ND<50 <br /> Benzene: ND<0. 3 ND<0. 3 <br /> Toluene: ND<0. 3 ND<0. 3 <br /> Ethyl Benzene: ND<0 . 3 ND<0. 3 <br /> Xylenes: ND<0. 9 ND<0. 9 <br /> Concentration: ug/L ug/L <br /> i <br /> a Page 1 of 2 <br /> Certified Laboratories <br />