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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 /> Bromodichloromethane BSL1460 Matrix Spike 0916935-03 ND 23.930 25.000 ug/L 95.7 70-130 <br /> Matrix Spike Duplicate 0916935-03 ND 24.010 25.000 ug/L 0.3 96.0 20 70-130 <br /> Chlorobenzene BSL1460 Matrix Spike 0916935-03 ND 24.630 25.000 ug/L 98.5 70-130 <br /> Matrix Spike Duplicate 0916935-03 ND 24.250 25.000 ug/L 1.6 97.0 20 70-130 <br /> Chloroethane BSL1460 Matrix Spike 0916935-03 ND 18.170 25.000 ug/L 72.7 70-130 <br /> Matrix Spike Duplicate 0916935-03 ND 17.300 25.000 ug/L 4.9 69.2 20 70-130 003 <br /> 1,4-Dichlorobenzene BSL1460 Matrix Spike 0916935-03 ND 24.570 25.000 ug/L 98.3 70-130 <br /> Matrix Spike Duplicate 0916935-03 ND 25.380 25.000 ug/L 3.2 102 20 70-130 <br /> 1,1-Dichloroethane BSL1460 Matrix Spike 0916935-03 ND 23.250 25.000 ug/L 93.0 70-130 <br /> Matrix Spike Duplicate 0916935-03 ND 22.850 25.000 ug/L 1.7 91.4 20 70-130 <br /> 1,1-Dichloroethene BSL1460 Matrix Spike 0916935-03 ND 27.570 25.000 ug/L 110 70-130 <br /> Matrix Spike Duplicate 0916935-03 ND 20.480 25.000 ug/L 29.5 81.9 20 70-130 002 <br /> Toluene BSL1460 Matrix Spike 0916935-03 ND 24.420 25.000 ug/L 97.7 70-130 <br /> Matrix Spike Duplicate 0916935-03 ND 24.220 25.000 ug/L 0.8 96.9 20 70-130 <br /> Trichloroethene BSL1460 Matrix Spike 0916935-03 ND 25.590 25.000 ug/L 102 70-130 <br /> Matrix Spike Duplicate 0916935-03 ND 24.920 25.000 ug/L 2.7 99.7 20 70-130 <br /> 1,2-Dichloroethane-d4(Surrogate) BSL1460 Matrix Spike 0916935-03 ND 8.5000 10.000 ug/L 85.0 76-114 <br /> Matrix Spike Duplicate 0916935-03 ND 8.5200 10.000 ug/L 85.2 76-114 <br /> Toluene-d8(Surrogate) BSL1460 Matrix Spike 0916935-03 ND 9.8200 10.000 ug/L 98.2 88-110 <br /> Matrix Spike Duplicate 0916935-03 ND 9.8900 10.000 ug/L 98.9 88-110 <br /> 4-Bromofluorobenzene(Surrogate) BSL1460 Matrix Spike 0916935-03 ND 9.7100 10.000 ug/L 97.1 86-115 <br /> Matrix Spike Duplicate 0916935-03 ND 9.8600 10.000 ug/L 98.6 86-115 <br /> Benzene BSL1778 Matrix Spike 0915623-93 ND 29.630 25.000 ug/L 119 70-130 <br /> Matrix Spike Duplicate 0915623-93 ND 29.300 25.000 ug/L 1.1 117 20 70-130 <br /> Bromodichloromethane BSL1778 Matrix Spike 0915623-93 ND 23.480 25.000 ug/L 93.9 70-130 <br /> Matrix Spike Duplicate 0915623-93 ND 23.180 25.000 ug/L 1.3 92.7 20 70-130 <br /> The results in this report apply to the samples analyzed in accordance with the chain ojcuslodv document.'Phis analytical report must be reproduced in its entirety. <br /> All results listed in this report are for the exclusive use of the submitting party. 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 32 of 44 <br /> Certifications: California-ELAP Certification Number 1186; Nevada Administrative Code-NAC-445A <br />