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9DPRECISION <br /> ENVIRO-TECH <br /> Analytical Laboratory CERTIFICATE OFANALYSIS <br /> Tuesday,June 15,2004 <br /> Attention Rita Koehnen RECEIVED <br /> Port of Stockton JUL2 3 2an� Report Page I of 14 <br /> P O Box 2089 <br /> Stockton, CA 95201-2089 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sample Information <br /> Sample ID MW 3-1 Sample Type Grab <br /> Laboratory ID 0401800-01 Project Name Port of Stockton UST Site No 3 <br /> Dale/Time Sampled 2I-May-04 14 10 by Jun Neal Sample Matrix Ground Water-Non Potable <br /> IT'S,Parameter Result DLR Unit Dilution Batch Prepared Analysts Date Method Notes <br /> _Benzene 1374 0 500 ugll I AF41501 27 May-04 27-May-04 EPA 82608 <br /> Ethylhsnzene136 0 500 ug/1 1 AF41501 27-May-04 27 May-04 EPA 82606 J <br /> Toluene 225 0 500 ugll 1 AF41501 27 May-04 27-May 04 EPA 8260E <br /> m,P-Xylene 330 0 500 ug/1 1 AF41501 27-May-04 27-May-04 EPA 82606 <br /> o-Xylene 187 0 500 ug/1 1 AF41501 27-May-04 27-May-04 EPA 82606 <br /> Surrogate 4-Bromofluorobenzene 100% 86-115 <br /> mg L—miNagroms per Luer=ppm DLR=Detection Lima for Purpose of Reporung <br /> ug L=micrograms per Luer=ppb 8xceptional%ample matrices or interferences may <br /> resuli to higher detecrmn ltmus <br /> CTFULLY SUBMITTED, <br /> 7:::7�,t/.,,-��--� <br /> Jonathan Le, Laboratory Director <br /> 7743 N West Lane Suite B2 Stockton CA 95210 z)hone (209) 477-8105 Fax (209) 477-81-IR <br />