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1 <br /> Superior Precision Analytical, /nc. J C' <br /> 825 Arnold Drive Suite 1 14 • Martinez California 94553 ■ X51 vt 2 1 5 12 / fax (5 10) 229 15z. <br /> Alton Geoscience Project 31-0329 <br /> Attn : TODD PEARSON Reported 09/29/92 <br /> TOTAL PETROLEUM HYDROCARBONS <br /> Lab # Sample Identification Sampled Analyzed Matrix <br /> 86756- 1 TB-LB 09/16/92 09/24/92 Water <br /> 86756- 2 RIN 09/16/92 09/24/92 Water <br /> 86756- 3 MW-10 09/16/92 09/25/92 Water <br /> 86756- 4 MW-9 09/16/92 09/25/92 Water <br /> 86756- 5 MW-8 09/16/92 09/25/92 Water <br /> 86756- 6 MW-4A 09/16/92 09/24/92 Water <br /> 4857 6- 7 MW-1 09/16/92 09/24/92 Water <br /> 86756- 8 MW-5A 09/16/92 09/25/92 Water <br /> 86756- 9 MW-2A 09/16/92 09/25/92 'nater <br /> 86756-10 MW--11 09/16/92 09/24/92 Water <br /> RESULTS OF ANALYSIS <br /> Laboratory Number: 86756- 1 86756- 2 86756- 3 86756- 4 86756- 5 <br /> iVAJK <br /> Gasoline : ND<50 ND<50 ND<50 ND<50 52* <br /> Benzene : ND< 0 . 5 ND< 0 5 ND< 0 5 ND<0 . 5 tiD<0 . 5 <br /> Toluene : ND<0 5 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 ND<0 .5 <br /> Xylenes : ND<0 .5 ND<0 . 5 ND< 0 . 5 ND<0 . 5 ND<0 5 <br /> Concentration: ug/L ug/L ug/L ug/L ..g/L <br /> Laboratory Number: 86756-- 6 6756- 7 86756- 8 86756- 9 56-10 <br /> Gasoline : ND<50 7200 ND<50 ND<50 ND<50 <br /> Benzene : ND<0 . 5 310 ND<0 . 5 ND<0 . 5 ND<0 . 5 <br /> Toluene: ND<0.5 83 ND<0 . 5 ND<0 . 5 ND<0 . 5 <br /> Ethyl Benzene: ND<0 .5 350 ND< 0 . 5 ND<0 .5 ND<0 . 5 <br /> Xylenes : ND<0.5 1100 ND<0 . 5 ND<0 . 5 ND<0 . 5 <br /> Concentration : ug/L ug/L 4 ug/L ug/L ug/L <br /> is <br /> Page 1 of 2 <br /> Certrfied Laboratories <br />