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Laboratories, Inc. <br /> Environmental Testing Laboratory Since 1949 — - <br /> TRC Reported: 03/072011 16:35 <br /> 123 Technology Drive Project: 10013 <br /> Irvine,CA 92618 Project Number. 4514507980 <br /> Project Manager. Anju Farfan <br /> Volatile Organic Analysis (EPA Method 8260) <br /> Quality Control Report - Precision & Accuracy <br /> Control Limits <br /> Source Source Spike Percent Percent Lab <br /> Constituent Type Sample ID Result Result Added Units RPD Recovery RPD Recovery Quals <br /> QC Batch ID: BUC0025 Used client sample: N <br /> Benzene MS 110222951 NO 26.580 25.000 ug& 106 70-130 <br /> MSD 110222951 NO 24.540 25.000 ug/L 8.0 98.2 20 70-130 <br /> Toluene MS 1102229-51 NO 28.080 25.000 uglL 112 70-130 <br /> MSD 1102229-51 NO 25.840 25.000 ug/L 8.3 103 20 70.i 3C <br /> 1,2-0IMloraethane-d4(Burro") Ms 1102229-51 NO 10.070 10.000 ug/L 101 76-114 <br /> MSD 110222951 NO 10.110 10.000 uglL 0.4 101 76-114 <br /> Toluene-d8(Surrogate) MS 1102229-51 NO 9.9700 10.000 ug/L 99.7 88-110 <br /> MSD 1102229-51 NO 9.9100 10.000 uglL 0.6 99.1 86-110 <br /> 4-Bromofluorobenzene(Surrogate) MS 110222951 NO 10.270 10.000 ug/L 103 86-115 <br /> MSD 1102229.51 NO 9.9900 10.OD0 ugfL 2.8 99.9 86-115 <br /> The results in this report apply b the samples onalyeed in accordance with the chain o cart document.This analytical <br /> Nl vmulb listed is thism n.for the eadusive use of the subm(nio 'f iaa. doo,t heanco,ucedin ioentirery. <br /> W RnattY.BC Lbotmaiee,loc.nswmnrorupmmbiliry fa¢oom altentioa,scpve4oq deucWoent mtb'vd wiry immnmemtion. <br /> 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 w .bcisbs.com Page 81 of 88 <br />