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06/01292 17: 11 2t 415 229 1526 SUPERIOR LR65 P. 02 <br /> Superior Precision .analytical, Inc_ <br /> 1325 Arnold Drivc, Suite 1 1 a • Mhnincz. Ci6fornia 9455.3 (510 I1R 1 a 1 7 / f.�x (S 10� ll�J alC, <br /> Alton Geoscience Project 31-0355 <br /> Attn: Todd Pearson Reported 05/28/92 <br /> TOTAL PETROLEUM HYDROCARBONS <br /> Lab # Sample Identification Sampled Analyzed Matrix <br /> 85762- 1 TB-LB 05/19/92 05/22/92 Water <br /> 85762- 2 RIN 05/19/92 05/21/92 Water <br /> 85762- 3 EA-5 05/19/92 05/21/92 water <br /> 85762- 4 EA-6 05/19/92 05/21/92 Water <br /> RESULTS OF ANALYSIS <br /> IT.aboraatory Number: 85762- 1 85762- 2 85762- 3 85762- 4 <br /> Gasoline: ND<50 ND<50 ND<50 ND<50 <br /> Benzene: ND<0 . 5 ND<0 . 5 ND<0. 5 ND<0. 5 <br /> Toluene : ND<0 . 5 ND<0 . 5 ND<0. 5 ND<0. 5 <br /> Ethyl Benzene: ND<0 . 5 ND<0 .5 ND<0. 5 ND<0. 5 <br /> Xylenes : ND<0. 5 ND<0 . 5 ND<0. 5 ND<0. 5 <br /> Concentration: ug/L ug/L ug/L ug/L <br /> Page 1 of 2 <br /> Certified lawrciwrncs <br />