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PRECISION O n <br /> E WRO-TECH <br /> Analydcal Laboratory <br /> CERTIFICATE OF ANALYSIS <br /> Tuesday,March 13, 2007 <br /> Attention: Guy W.Roy <br /> R&L Diesel Report Page 5 of 23 <br /> P.O.Box 2498 <br /> Danville, CA 94526 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sample hzform4 tion <br /> Sample ID: Over Tank Sample Type: Grab <br /> Laboratory ID: 7022608-01 Project Name. UST-Waste Oil <br /> Date/Time Sampled: 26-Feb-07 00:00 by Guy W.Roy Sample Matrix: Soil <br /> Test Parameter Result DLR Unit Dilution Batch Prepared Ana sis Date Method Notes <br /> Trichloroethene ND 2.00 ug/kg 1 AB72708 27-Feb-07 27-Feb-07 EPA 8260B <br /> Trichlorofluoromethane ND 2,00 ug/kg 1 AB72708 27-Feb-07 27-Feb-07 EPA 8260B <br /> 1,2,3-Trichloropropane ND 2.00 ug/kg 1 AB72708 27-Feb-07 27-Feb-07 EPA 82606 <br /> 1,3,5-Trimethylbenzene ND 2.00 ug/kg i 1,872708 27-Feb-07 27-Feb-07 EPA 8260B <br /> 1,2,4-Trimethylbenzene ND 2.00 ug/kg 1 AB72708 27-Feb-07 27-Feb-07 EPA 82608 <br /> Vinyl acetate ND 20-0 ug/kg 1 AB72708 27-Feb-07 27-Feb-07 EPA 8260B <br /> Vinyl chloride ND 2.00 ug/kg 1 672708 27-Feb-07 27-Feb-07 EPA 82608 <br /> Methyl tert-butyl Ether(MtBE) ND 2.00 uglkg 1 B72708 27-Feb-07 27-Feb-07 EPA 8260B <br /> Ethyl tert-Butyl Ether(ETBE) ND 2.00 ug/kg 1 4B72708 27-Feb-07 27-Feb-07 EPA 8260B <br /> m,p-Xylene ND 2.00 ug/kg 1 4E372708 27-Feb-07 27-Feb-07 EPA 8260B <br /> o-Xylene ND 2.00 ug/kg 1 AB72708 27-Feb-07 27-Feb-07 EPA 82603 <br /> tert-Amyl Methyl Ether(TAME) ND 2.00 ug/kg 1 AB72708 27-Feb-07 27-Feb-07 EPA 8260E <br /> tert-Butyl Acohol(TBA) ND 50.0 ug/kg 1 AB72708 27-Feb-07 27-Feb-07 EPA 8260B <br /> Diisopropyl Ether(DIPE) ND 2.00 ug/kg 1 AB72708 27-Feb-07 27-Feb-07 EPA 82608 <br /> Surrogate:Dibromofluoromethane 115% 86-118 <br /> 5unogate:Toluene-d8 110% 88-110 <br /> Surrogate:4-BromoRuorobenzene 114% 86-115 <br /> mgt—milligrams per Liter=ppm DLR—Defection Ltmit forPurpose 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 /> Jonathan Le,Laboratory Director <br /> 3935 N. Coronado Ave Stockton CA. 95204 phone: (209) 4 7-8105 Fax: (209) 477-8148 <br />