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f <br /> Precision Analytical Laboratory, Inc. <br /> 4136 LAKESIDE DRIVE,RICHMOND,CA 94806 PHONE(415)222-3002 FAX(4 1.91 X22-1251 <br /> CERTIFICATE OF ANALYSIS <br /> STA'L'E LICENSE NO, 211 <br /> Received: 02/22/91 <br /> Reported: 03/08/91 <br /> r-- Attn: Dan Wynne <br /> Pacific Refining Co. <br /> 4585 Pacheco Blvd. <br /> Martinez, CA. 94553 <br /> W Project: BP-Stockton <br /> r-. <br /> Matrix: Soil <br /> Aromatic Volatile Hydrocarbon Analysis <br /> r - <br /> EPA Method 8020 <br /> mg/kg <br /> Lab ID Client ID Benzene MDL To ue a MDL Chloroben. L <br /> 72275-1 SSS-P3-5 ND<0.005 0.005 ND<0.005 <br /> 0.005 ND<0.005 o.005 <br /> 72276-2 SSS-P3-6 ND<0.005 0.005 ND<0.005 0.005 ND<0.005 0.005 <br /> 72276-3 SSS-P3^-7 ND<0.005 0.005 ND<0.005 0.005 ND<0.005 0,005 <br /> 72276-4 SSS-P3-8 ND<0.005 0.005 ND<0.005 0,005 ND<0.005 0.005 <br /> 72276-5 SSS-P4-2 ND<0.005 0.005 ND<0.005 0.005 ND<0.005 0.005 <br /> 72276-6 SSS-P6-3 ND<0.005 0.005 ND<0.005 0.005 ND<0.005 0.005 <br /> 72276-7 SSS-P6-4 ND<0,005 0.005 ND<0.005 0.005 ND<0.005 0.005 <br /> t <br /> Ethyl- <br /> ' Cl benzene UL X lene MDL <br /> 72276-1 SSS-P3-5 ND<0.005 0.005 ND<0.005 0.005 <br /> 72276-2 SSS-P3-6 ND<0.005 - 0.005 ND<0.005 0.005 <br /> 72276-3 SSS-P3-7 ND<0.005 0.005 ND<0.005 0.005 <br /> 72276-4 SSS-P3-8 ND<0.005 0.005 ND<0.005 0.005 <br /> T 72276-5 SSS-P4-2 ND<0.005 0.005 ND<0.005 0.005 <br /> 72276-5 SSS-P6-3 ND<0.005 0.005 ND<0.005 0." ;5 <br /> 72276-7 SSS-P6-4 ND<0.005 0.005 ND<0.005 0.005 <br /> QA/QC: Spike Recovery for Benzene: 81� i • <br /> Spike Recovery for Toluene: 102 <br /> Spike Recovery for Xylene: 106$ <br /> Spike Recovery for Chlorobenzene: 106% <br /> Method detection limit; Compound below this level 'Would not be <br /> detected. <br /> 14 <br /> JL <br /> J 'me how <br /> -- -------------- - ------- <br /> -- -..- -Laboratory Director <br /> JC/dc <br /> OUTSTANDING QUALITY AND SERVICE <br /> CALIFORNIA STATE CERTIFIED LABORATORY " <br />