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't <br /> PRECISION ` <br /> ENVIRO-TECH <br /> bo <br /> Analytical Laboratory A ' <br /> . � � _ f CER TIFICA_TE OF ANAL YSI <br /> Monday, Match 22 20 '' <br /> Attention Rita Koehnen , <br /> r , 1 <br /> , <br /> Port of Stockton Report Page S of 8 <br /> 2201 W Washington St <br /> Stockton, CA 95203 <br /> Volatile Organic Compounds by EPA Method 8260B ' <br /> Sample Information <br /> Sample ID MW 3-6 Sample Type- Grab ' <br /> Laboratory ID 0400750.05 Project Name Port of Stockton UST Site No 3 <br /> Date/Time Sampled- 26-Feb-04 15 00 by Jim Neal Sample Matrix Ground Water-Non Potable <br /> Prepared Analysis Date Method Notes <br /> Resull DLR Unit Dilution Batch Pre , <br /> Test Parameter P <br /> Benzene 792 1 00 ug/1 1 AC42211 01-Mar-04 a 01-Mar-04 EPA 8260B <br /> Ethylbenzene 106 1 00 ugll 1 AC42211 01-Mar-04 01-Mar-04 EPA 8260B ' <br /> Toluene 207 k1 00 ugll 1 AC42211 01-Mar-04 01-Mar-04 EPA 8260B <br /> m,p-Xylene 458 100, ugll 1 AC42211 01-Mar-04 01-Mar-04 EPA 8260B <br /> o-Xylene — 872 1 00 ugll 1 AC42211 01-Mar-04 01-Mar-04 EPA 8260B ' <br /> Gasoline 312 50 0 ugll 1 AC42211 01-Mar-04 01-Mar-04 EPA 8260B <br /> Surrogate Drbromofluoromethane 93% 86-118 <br /> fSurrogate Toluene d8 _ 97% 88-110 <br /> —Surrogate 4-Bromofluorobenzene— _98% 85-115 <br /> mg I —mdlq rams per I aer=ppm lel R=Daeclaon I imnr for 1'urpo%c ofRcporrinf, ' <br /> ug 1 —mrcrol,ram5 per Crier—pph Fxcepuanal sample marricc.%or in7crfcremo may <br /> re%uli in hrl,hcr documn lints <br /> RESPECTFULLY SUBMITTED, <br /> Jonathan Le, Laboratory Director ' <br /> 7743 N Well Lune Sidle B2 Slockl017 CA 95210 phone (209) 477-8105 Fax (209) 477-81-18 <br />