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Superior Precisic)n .ria/vrical, Inc <br /> 825 Arnold Dnve Suite 1 14 • Martinez Callfornla 94553 ■ (510) 229-1512 / fax (5 10) 229-1526 <br /> WESTERN GEO ENGINEERS Project R-603 <br /> Attn GEORGE CONVERSE Reported 03-January-1994 <br /> VOLATILE PETROLEUM HYDROCARBONS <br /> Sample preparation by Purge and Trap (EPA SW-846 method 5030) Gasoline <br /> analysis by SW-846 method 801.5 modified. Gasoline range quantified as all <br /> compounds between C6 and C10 Benzene, Toluene, Ethyl Benzene, and Xylenes <br /> analyses by EPA SW--846 method 8020 . <br /> Chronology Laboratory Number 90824 <br /> Identification Sampled Received Extracted Analyzed Run # Lab # <br /> MW-1 12/22/93 12/23/93 12/30/93 12/30/93 1 <br /> MW-2 12/22/93 12/23/93 12/29/93 12/29/93 2 <br /> MW-3 12/22/93 12/23/93 12/29/93 12/29/93 3 <br /> MW-4 12/22/93 12/23/93 12/29/93 12/29/93 4 <br /> MW-5 12/22/93 12/23/93 12/29/93 12/29/93 5 <br /> MW-6 12/22/93 12/23/93 12/29/93 12/29/93 6 <br /> MW-7 12/22/93 12/23/93 12/29/93 12/29/93 7 <br /> MW-8 12/22/93 12/23/93 12/30/93 12/30/93 8 <br /> MW-9 12/22/93 12/23/93 12/30/93 12/30/93 9 <br /> MW-10 12/22/93 12/23/93 12/30/93 12/30/93 10 <br /> MW-11 12/22/93 12/23/93 12/30/93 12/30/93 11 <br /> MW-12 12/22/93 12/23/93 12/30/93 12/30/93 12 <br /> Page 1 of 4 <br /> Certified Laboratories <br />