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O Superior Precision Ana/ytica/_ Inc_ <br /> lii 1555 Burke Unf( I . Spin Francisco Cali forno 941?- {415) 647 2081 / fax (9 15, 821 7 123 <br /> Sierra Environmental Services Project 1-146-04 <br /> Attn. Chris Bramer Reported 12/28/92 <br /> TOTAL PETROLEUM HYDROCARBONS <br /> Lab # Sample Identification Sampled Analyzed Matrix <br /> 13904- 1 TB-LB 12/17/92 12/23/92 Water <br /> 13904- 2 BB 12/17/92 12/23/92 Water <br /> 13904- 3 MW-3 12/17/92 12/24/92 Water <br /> 13904- 4 MW-5 12/17/92 12/23/92 Water <br /> 13904- 5 MW-6 12/17/92 12/23/92 Water <br /> 13904- 6 MW-4 12/17/92 12/23/92 Water <br /> 13904- 7 MW-2 12/17/92 12/23/92 Water <br /> RESULTS OF ANALYSIS <br /> Laboratory Number: 13904- 1 13904- 2 13904- 3 13904- 4 13904- 5* <br /> Gasoline: ND<50 ND<50 200 370 ND<500 <br /> Benzene: ND<0. 5 ND<0. 5 2 . 7 0 . 9 ND<5 <br /> Toluene: ND<0. 5 ND<0. 5 3 . 9 2 . 1 ND<5 <br /> Ethyl Benzene: ND<0. 5 ND<0. 5 3 . 8 3 . 6 5 . 2 <br /> Xylenes: ND<0. 5 ND<0. 5 26 22 34 <br /> Concentration: ug/L ug/L ug/L ug/L ug/L <br /> Laboratory Number: 13904- 6 13904- 7 <br /> Gasoline: 4800 330 <br /> Benzene: 0. 6 110 <br /> Toluene: 1. 5 1. 5 <br /> Ethyl Benzene: 2 . 7 2 . 3 <br /> Xylenes: 17 22 <br /> Concentration: ug/L ug/L <br /> * - Detection Limit raised due to foaming sample matrix. <br /> Page 1 of 2 <br /> Certified Laboratories <br />