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HOUSTON LABORATORY <br /> 8880 INTERCHANGE DRIVE <br /> Q HOUSTON, TEXAS 77054 <br /> ertificate of Analysis Na® H9-981OD17-01 PHONE(713)660-0901 <br /> BP Oil Company <br /> 295 SW 41st St, Bldg 13 , Ste N p.O.# <br /> Renton, WA 98055 H339131, COC#072075 <br /> ATTN: Scott Hooton DATE: 11/09/98 <br /> PROJECT: #11192 , 1403 Country Club PROJECT NO: 10-37-7--3 <br /> SITE: Stockton MATRIX: WATER <br /> SAMPLED BY: Alisto Engineering DATE SAMPLED: 10/28/98 11: 15: 00 <br /> SAMPLE ID: S-1 DATE RECEIVED: 10/30/98 <br /> ANALYTICAL DATA <br /> PARAMETER RESULTS DETECTION UNITS <br /> LIMIT <br /> MTBE 1200 100 P ug/L <br /> Benzene ND 0 . 50 P ug/L <br /> Toluene ND 1. 0 P ug/L <br /> Ethylbenzene ND 1. 0 P ug/L <br /> Total Xylene ND 1. 0 P ug/L <br /> Surrogate o Recovery <br /> 1, 4-Dif luorobenzene 93 <br /> 4-Bromofluorobenzene 103 <br /> Method 8020A*** <br /> Analyzed by: TB <br /> Date: 11/04/98 <br /> Gasoline Range Organics 1. 5 0. 050 P mg/L <br /> Surrogate % Recovery <br /> 1, 4-Difluorobenzene 100 <br /> 4-Bromofluorobenzene 127 <br /> California LUFT Manual for Gasoline <br /> Analyzed by: TB <br /> Date: 11/03/98 23 : 17 : 00 <br /> (P) - Practical Quantitation Limit ND - Not detected. <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 /> ***Ref: Test Methods for Evaluating Solid Waste, EPA SW846, 3rd Ed. <br /> QUALITY ASSURANCE: These <br /> are analyses performed in accordance <br /> Y <br /> with EPA guidelines for quality assurance. <br /> SPL California License # 1903 <br />