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Precision Analytical Laboratory, Inc. <br /> 4136 LAKESIDE DRIVE,RICHMOND,CA 9.1806 PHONE(415)222-3002 FAX(415)222-1251 <br /> CERTIFICATE OF ANALYSIS <br /> STATE LICENSE NO. 211 <br /> Received: 02/14/91 <br /> Reported: 02/15/91 <br /> _ Attn: Dan Wynne <br /> Job 72253 <br /> International Technology <br /> 4585 Pacheco Blvd. <br /> Martinez, CA. 94553 <br /> Project: BP Stockton <br /> Matrix: Soil <br /> - Aromatic Volatile Hydrocarbon Analysis <br /> EPA Method 8020 <br /> mg/kg <br /> Lab ID Client ID Benzene MDL Toluene MDL <br /> 72253-1 SSS-P4-1 ND<0.005 0.005 ND<0.005 0.005 <br /> 72253-2 SSS-P6-1 ND<0.005 0.005 ND<0.005 0.005 <br /> 72253-3 SSS-P6-2 ND<0.005 0.005 ND<0.005 0.005 <br /> 72253-4 SSS-P5-1 ND<0.15 0,15 11.0 0.15 <br /> 72253-5 SSS-P5-2 ND<0.15 0.15 22.0 0.15 <br /> 72253-6 SSS-P5-3 ND<0.15 0.15 1.4 0.15 <br /> 72253-7 SSS-P5-4 ND<0.15 0,15 0.93 0.15 <br /> Ethyl- <br /> Lab ID Client ID benzene MDL _ Xylene <br /> 72253-1 SSS-P4-1 ND<0.005 0.005 ND[0.005 0.005 <br /> 72253-2 SSS-PG-1 ND<0.005 0.005 ND<0.005 0.005 <br /> 72253-3 SSS-P6-2 ND<0.005 0.005 0.012 0.005 <br /> 72253-4 SSS-P5-1 16.0 0.15 500 0.30 <br /> 72253-5 SSS-P5-2 13.0 0.15 270 0.30 <br /> 72253-6 SSS-P5-3 1.2 0.15 200 0.30 <br /> 72253-7 SSS-P5-4 0.98 0.15 94.0 0.30 ' <br /> >t c <br /> 1 <br /> ` QA/QC: Spike Recovery for Benzene: 116% <br /> Spike Recovery for Toluene: 1211 <br /> Spike Recovery for O-Xylene: 105% <br /> MDL: Meth detection limit; Compound below this level would not be <br /> detected. <br /> -_ <br /> Qft <br /> tato Director JC/dc <br /> OUTSTANDING QUA11TY AND SERVICE <br /> CALIFORNIA 57ATE CERTIFIED LABORATORY <br />