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PRECISION r) <br /> { ENVIRO-TECH <br /> Analytical Laboratory <br /> CER TI <br /> FICATE OFANALYSIS <br /> " Friday,April 4,2008 <br /> attention: Guy W.Roy <br /> R&L Diesel <br /> P.O.Box 7498 <br /> Reporl Page 39 of 41 <br /> ' Danville, CA 94526 <br /> Volatile Organic Compounds by EPA Method 8260B Quality Control <br /> Precision Enviro-Tech <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Litnii Units "Level Result %REC Limits RPD Limit Notes <br /> Batch AC91102-Volatiles . <br /> Reference(AC81102-SRM1) Prepared: 1.1-Mar-08 Analyzed: 12-Mar-08 ; <br /> Benzene 15.4 2,00 qft 20.0 77 75-120 <br /> Bromobcnzmc 18.3. 2.00 20.0 91 75-120 <br /> n-Butylbenune 17,9 2.00 20.0 90 75-120 <br /> sec-Butylbenzene 15.4 2.00 20.0 77 75-120 <br /> cert-Butyibcnzene 15.9 2.00 20.0 79 75420 <br /> Chlatobcnzatc I9.5 2.00 20.0 97 75-120 <br /> 2-Chlorotoluene 15.32.00 20.0 . 77 75-120 <br /> 1,2-Dibromocthane(EDB) 31.3 2.00 20,0 156 75-200 <br /> ! 1,2-Dichlorubenzenc 18.0 2.00 20.0 90 75-200 <br /> 1,2-Dichlompropane 15.0 2.00 20.0 75 <br /> 75-120 <br /> Dichloropropane 22.2 2.00 20.0 111 75-120 .1 <br /> + ,3 Dichloropropcne 15.6 2.00 20.0 78 75-120 <br /> '`.mts-1,3-Dichlompropcnc 21.7 2.00 " 20.0 109 75-120 <br /> Ethylbenzene 17.2 2.00 " 20.0 86 75-120 <br /> Hmehlorobutadiene 16.6 2,00 20.0 83 75-120 <br /> Isopropyibenzenc 16.4 2.00 20.0 82 75-120 <br /> FF p-Isopropyholuenc 19.9 2.00 20.0 ,100 75420 <br /> 1,1,12-Tctraehloroethane 28.3 2.00 20.0 142 75-200, <br /> r Tcuachloroetbenc 23.2 2.00 20.0 116 75-120 <br /> Toluene 23.5 2.00 20.0 118 75-120 <br /> 1.2,3-Trichlombenzene 16.2 2.00 20.0 81 75-200 <br /> 1,2,4-Trichlorober=c 15.8 2.00 20.0 79 75-200_ <br /> 1,1,2-Trichlaroctharte 22.6 2.00 " 20.0 113 75-200 <br /> Ttichlotolfuorornethatic 18.8 2.00 20.0 94 75-120 <br /> 1,2,3-Tricbloropropane 22.4 2.00 " 20.0 112 75-200 <br /> 1,3,5-Trimcthylbenzcnc 15.4 .2-00 " 20.0 77 75-120 <br /> 1,2,4 Trimethylbertzene 15.0 2.00 20.0 75 75-200 <br /> ro.P-Xyknc 30.0 200 40.0 75 75-120 <br /> °-Xylene 18.2 2.00 20.0 91 75-120 <br /> Surrogate:Di6romafkroromerhoanr 44.0 50-0 88 86-118 <br /> + Surrogate_Toluene-& 54.0 50.0 108 88-110 <br /> Surrogate:4.8romofluoroberrehe 45.8 30.1 91 86-115 <br /> mg1L-mHfrrums per Liter-ppm DLR s Ucrectum Limitp,Pu <br /> qnw WL=mit r Liter- � �n y <br /> S pr p1� Geceprional.aarrtpole++eutricrs ar ttuerfrrvurs t'ffiY <br /> re.+vlt in higher detertiat limits. <br /> f <br /> `RESPECTFULLY SUBMITTED, <br /> Jonathan Le,Laboratory Director <br /> 3935 N. Coronado Ave Stockton CA. 95204 Phone: (209) 477-8105 Fax: (209) 546-7497 <br />