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HOUSTON LABORATORY <br /> 8880 INTERCHANGE DRIVE <br /> HOUSTON TEXAS 77054 <br /> • ® PHONE(713)660 0901 <br /> Certificate of Analysis No. H9-9509266-02 <br /> Engineering Science, Inc <br /> 290 Elwood Davis Rd <br /> Liverpool, NY 13088 <br /> ATTN Martin Miller DATE 09/19/95 <br /> PROJECT: Water Analysis PROJECT NO: 727211 . 08969 <br /> SITE: Greyhound Stockton, CA MATRIX: WATER <br /> SAMPLED BY: Engineering Science DATE SAMPLED: 09/07/95 13 00 00 <br /> SAMPLE ID: MW-2 DATE RECEIVED: 09/08/95 <br /> .ANALYTICAL DATA <br /> PARAMETER RESULTS DETECTION UNITS <br /> LIMIT <br /> BENZENE ND 0 5 P ),g/L <br /> TOLUENE ND 0 5 P µg/L <br /> ETHYLBENZENE ND 0 5 P f,g/L <br /> TOTAL XYLENE ND 0 5 P µg/L <br /> TOTAL VOLATILE AROMATIC HYDROCARBONS ND µg/L <br /> Surrogate Recovery <br /> 1, 4-Difluorobenzene 99 <br /> 4-Bromofluorobenzene 136 <br /> • METHOD 8020*** <br /> Analyzed by DAO <br /> Date 09/11./95 <br /> Total Petroleum Hydrocarbons-Diesel 0 09 0 . 05 P mg/L <br /> Surrogate Recovery <br /> o-Terphenyl 106 <br /> 2-Fluorobiphenyl 67 <br /> Mod 8015 - Diesel <br /> Analyzed by SEG <br /> Date 09/12/95 19 44 : 00 <br /> ND - Not detected (P) - Practical Quantitation Limit <br /> Notes *Ref Methods for Chemical Analysis of Water and Wastes, 1983 , EPA <br /> **Ref Standard Methods for Examination of Water & Wastewater, 18th ed <br /> ***Ret Test Methods for Evaluating Solid Waste, EPA SW846 , 3rd Ed <br /> QUALITY ASSURANCE: These analyses are performed in accordance <br /> with EPA guidelines for quality assurance <br /> SPL California License # 1903 <br /> SPL, Inc - Project Man ger <br />