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PRECISION <br /> ENVIRO-TECH <br /> Analytical Laboratory CERTIFICATE OF ANALYSIS <br /> Wednesday,April 20,2005 <br /> Attention: Doug Heard <br /> Kleinfelder, Inc. Report Page 5of26 <br /> 2825 Myrtle St. <br /> Stockton, CA 95205 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sample Information <br /> Sample ID: 31191 T2B 15 Sample Type: Grab <br /> Laboratory ID: 5041907-01 Project Name: SJRTD <br /> Date/Time Sampled: 19-Apr-05 13:40 by Doug Heard Sample Matrix: Soil <br /> Test Parameter Result DLR Unit Dilution Batch Prepared Analysis Date Method Notes <br /> Trichloroethene ND 2.00 ug/kg 1 AD51911 19-Apr-05 19-Apr-05 EPA 8260B <br /> Trichlorofluoromethane ND 2.00 ug/kg 1 AD51911 19-Apr-05 19-Apr-05 EPA 8260B <br /> 1,2,3-Trichloropropane ND 2.00 ug/kg 1 AD51911 19-Apr-05 19-Apr-05 EPA 8260B <br /> 1,3,5-Trimethylbenzene ND 2.00 ug/kg 1 AD51911 19-Apr-05 19-Apr-05 EPA 8260B <br /> 1,2,4-Trimethylbenzene ND 2.00 ug/kg 1 AD51911 19-Apr-05 19-Apr-05 EPA 82608 <br /> Vinyl acetate ND 20.0 ug/kg 1 A051911 19-Apr-05 19-Apr-05 EPA 82608 <br /> Vinyl chloride ND 2.00 ug/kg 1 AD51911 19-Apr-05 19-Apr-05 EPA 82608 <br /> Methyl tert-butyl Ether(MtBE) ND 2.00 ug/kg 1 AD51911 19-Apr-05 19-Apr-05 EPA 8260B <br /> Ethyl tert-Butyl Ether(ETRE) ND 2.00 ug/kg 1 AD51911 19-Apr-05 19-Apr-05 EPA 8260B <br /> m,p-Xylene ND 2.00 ug/kg 1 AD51911 19-Apr-05 19-Apr-05 EPA 8260B <br /> o-Xylene ND 2.00 ug/kg 1 AD51911 19-Apr-05 19-Apr-05 EPA 8260B <br /> EDiisopropyl <br /> Methyl Ether(TAME) ND 2.00 ug/kg 1 AD51911 19-Apr-05 19-Apr-05 EPA 8260B <br /> Acohol(TBA) ND 50.0 ug/kg 1 AD51911 19-Apr-05 19-Apr-05 EPA 82608 <br /> Ether(DIPE) ND 2.00 ug/kg 1 AD51911 19-Apr-05 19-Apr-05 EPA 8260B <br /> Surrogate:Dibromofluoromethane 94% 86-118 <br /> Surrogate:Toluene-0 95% 88-110 <br /> Surrogate:4-Bromotluorobenzene 104% 86-115 <br /> mg/L—milligrams per Liter=ppm DLR=Detection Limitfor Purpose of Reporting. <br /> ug/L=micrograms per Liter=ppb Exceptional sample matrices or interferences may <br /> result in higher detection limits. <br /> RESPECTFULLY SUBMITTED, <br /> �r <br /> Jonathan Le,Laboratory Director <br /> 7743.N. West Lane. Suite B2 Stockton CA .952.10 .phone: (209) 477-8105 Fax: (20.9) 477-8148 <br />