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Precision Analytical Laboratory, Inc. <br /> 4136 LAKESIDE DRIVE, RICHMOND, CA 94806 PHONE (510) 222-3002 FAX (510) 222-1251 <br /> CERTIFICATE OF ANALYSIS <br /> STATE LICENSE NO. E 750 <br /> Received: 10/31/91 <br /> Reported: 11/01/91 <br /> Job # : 72977 <br /> Attn: Tish Resch *� <br /> rr^7 <br /> Public Health Services2 2 i <br /> of San Joaquin County NAV <br /> ENViRONVt-��AL HEALTH <br /> Project: B. P. Stockton PERMI"i/ScRV1CCS <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 /> 72977-7 1030TA0302 ND<0. 005 0. 005 0. 007 0. 005 <br /> 72977-8 1030TA0501 0. 009 0. 005 0. 009 0. 005 <br /> 72977-9 1030TA0502 ND<0. 005 0. 005 ND<0. 005 0. 005 <br /> Ethyl- <br /> Lab ID Client ID benzene MDL Xylenes MDL <br /> 72977-7 1030TA0302 ND<0. 005 0. 005 0. 006 0. 005 <br /> 72977-8 1030TA0501 ND<0. 005 0. 005 0. 006 0. 005 <br /> 72977-9 1030TA0502 ND<0. 005 0. 005 ND<0. 005 0. 005 <br /> QA/QC: Spike Recovery for Benzene: 87% <br /> Spike Recovery for Toluene: 103% <br /> Spike Recovery for Xylene: 99 <br /> MDL: Method Detection Limit. Compound below this level would not be <br /> detected. <br /> Page 2 of 2 <br /> OUTSTANDING QUALITY AND SERVICE <br /> CALIFORNIA STATE CERTIFIED LABORATORY <br />