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t� <br /> 1111111110 <br /> Laboratories Inc. <br /> Environmental Testing Laboratory Since 1949 <br /> Herst Associates Project: NCYC Reported: 01/11/2010 16:10 <br /> 4630 South Highway 94 North Outer Road Project Number: [none] <br /> Saint Charles,MO 63304 Project Manager: Erin Fanning <br /> Volatile Organic Analysis (EPA Method 8260) <br /> Quality Control Repo - Precision & Accuracy <br /> Control Limits <br /> Source Source Spike Percent Percent <br /> Constituent Batch ID QC Sample Type Sample ID Result Result Added Units RPD Recovery RPD Recovery Lab Quals <br /> Benzene BSL1368 Matrix Spike 0915623-61 ND 24.650 25.000 ug/L 98.6 70-130 <br /> Matrix Spike Duplicate 0915623-61 ND 24.590 25.000 ug/L 0.2 98.4 20 70-130 <br /> Bromodichloromethane BSL1368 Matrix Spike 0915623-61 ND 24.760 25.000 ug/L 99.0 70-130 <br /> Matrix Spike Duplicate 0915623-61 ND 25.160 25.000 ug/L 1.6 101 20 70-130 <br /> Chlorobenzene BSL1368 Matrix Spike 0915623-61 ND 24.590 25.000 ug/L 98.4 70-130 <br /> Matrix Spike Duplicate 0915623-61 ND 25.020 25.000 ug/L 1.7 100 20 70-130 <br /> Chloroethane BSL1368 Matrix Spike 0915623-61 ND 22.770 25.000 ug/L 91.1 70-130 <br /> Matrix Spike Duplicate 0915623-61 ND 22.490 25.000 ug/L 1.2 90.0 20 70-130 <br /> 1,4-Dichlorobenzene BSL1368 Matrix Spike 0915623-61 ND 25.090 25.000 ug/L 100 70-130 <br /> Matrix Spike Duplicate 0915623-61 ND 24.950 25.000 ug/L 0.6 99.8 20 70-130 <br /> 1,1-Dichloroethane BSL1368 Matrix Spike 0915623-61 ND 23.880 25.000 ug/L 95.5 70-130 <br /> Matrix Spike Duplicate 0915623-61 ND 23.550 25.000 ug/L 1.4 94.2 20 70-130 <br /> 1,1-Dichloroethene BSL1368 Matrix Spike 0915623-61 ND 19.850 25.000 ug/L 79.4 70-130 <br /> Matrix Spike Duplicate 0915623-61 ND 27.740 25.000 ug/L 33.2 111 20 70-130 Q02 <br /> Toluene BSL1368 Matrix Spike 0915623-61 ND 24.480 25.000 ug/L 97.9 70-130 <br /> Matrix Spike Duplicate 0915623-61 ND 24.590 25.000 ug/L 0.4 98.4 20 70-130 <br /> Trichloroethene BSL1368 Matrix Spike 0915623-61 ND 26.540 25.000 ug/L 106 70-130 <br /> Matrix Spike Duplicate 0915623-61 ND 29.210 25.000 ug/L 9.6 117 20 70-130 <br /> 1,2-Dichloroethane-d4(Surrogate) BSL1368 Matrix Spike 0915623-61 ND 10.140 10.000 ug/L 101 76-114 <br /> Matrix Spike Duplicate 0915623-61 ND 9.8300 10.000 ug/L 98.3 76-114 <br /> Toluene-d8(Surrogate) BSL1368 Matrix Spike 0915623-61 ND 10.030 10.000 ug/L 100 88-110 <br /> Matrix Spike Duplicate 0915623-61 ND 10.020 10.000 ug/L 100 88-110 <br /> 4-Bromofluorobenzene(Surrogate) BSL1368 Matrix Spike 0915623-61 ND 10.030 10.000 ug/L 100 86-115 <br /> Matrix Spike Duplicate 0915623-61 ND 9.9200 10.000 ug/L 99.2 86-115 <br /> Benzene BSL1460 Matrix Spike 0916935-03 ND 23.530 25.000 ug/L 94.1 70-130 <br /> Matrix Spike Duplicate 0916935-03 ND 23.160 25.000 ug/L 1.6 92.6 20 70-130 <br /> The results in this report apply to the samples analyzed in accordance with the chain ofcustodv document.This analytical report must be reproduced in its entirely. <br /> All results listed in this report are for the exclusive use of the submitting parry. BC Laboratories,Inc.assumes no responsibility for report alteration,separation,detachment or third party interpretation. <br /> 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www,bclabs.com Page 31 of 44 <br /> Certifications: California-ELAP Certification Number 1186; Nevada Administrative Code-NAC-445A <br />