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= M = = M M M = = = M M M =11 M M = M = <br />Laboratories, In ". <br />Environmental Testing Laboratory Since 1949 <br />Herst Associates Project: NCYC Reported: 08105/2008 16:25 <br />4630 South Highway 94 North Outer Road Project Number: [none] <br />Saint Charles, MO 63304 Project Manager. David Vasbinder <br />Volatile Organic Analysis (EPA Method 326 0) <br />Qualitv Control Report - Precision & Accuracy <br />Control Limits <br />Source Source Spike Percent Percent <br />Constituent Batch ID QCSam pAeTIpe Sam plelD Result Result Added Units RPD RecoveEm RPD Recovery LaltiQuals <br />Benzene <br />BRH0053 <br />Matrix Spike 0809910-01 <br />NU <br />14.04U <br />Lo.uw <br />UWL <br />;7a. <br />- <br />Matrix Spike Duplicate 0809910-01 <br />ND <br />24.730 <br />25,000 <br />ug/L 0.5 <br />98.9 <br />20 <br />70-130 <br />Bromodichlorometharte <br />BRH0053 <br />Matrix Spike 0809910-01 <br />ND <br />23.400 <br />25.000 <br />ug/L <br />916 <br />70-130 <br />Matrix Spike Duplicate 0809910-01 <br />ND <br />23.760 <br />25.000 <br />uglL 11.5 <br />95.0 <br />20 <br />70-130 <br />Chlorobenzene <br />BRH0053 <br />Matrix Spike 0809910-01 <br />ND <br />22.760 <br />25.000 <br />ug/L <br />91.0 <br />70-130 <br />Matrix Spike Duplicate 0809910-01 <br />NO <br />22.200 <br />25.000 <br />ug/L 2.4 <br />88.8 <br />20 <br />70-130 <br />Chloroethane <br />SRH0053 <br />Matrix Spike 0809910-01 <br />ND <br />23.830 <br />25,000 <br />ug/L <br />95.3 <br />70-130 <br />Matrix Spike Duplicate 0809910-01 <br />ND <br />24.240 <br />25.000 <br />ug/L 1.8 <br />97.0 <br />20 <br />70-130 <br />1,4-Di------ <br />BRH0053 <br />Matrix Spike 0809910-01 <br />ND <br />23.400 <br />25,000 <br />ug/L <br />93.6 <br />70-130 <br />,4-Dichlorobenzene <br />Matrix Spike Duplicate 0809910-01 <br />ND <br />22.950 <br />25.000 <br />ug/L 1.9 <br />91.8 <br />20 <br />70-130 <br />1,1-Dichloroethane <br />BRH0053 <br />Matrix Spike 0809910-01 <br />NO <br />24.570 <br />25.000 <br />ug/L <br />98.3 <br />70-130 <br />Matrix Spike Duplicate 0809910-01 <br />NO, <br />24,980 <br />25.000 <br />ug/L 11.6 <br />99.9 <br />20 <br />70-130 <br />1,11-Dichloroethene <br />BRH0053 <br />Matrix Spike 0809910-01 <br />NO, <br />24.700 <br />25.000 <br />ug/L <br />98.8 <br />70-130 <br />Matrix Spike Duplicate 0809910-01 <br />ND <br />25.140 <br />25.000 <br />ug/L 2.2 <br />101 <br />20 <br />70-130 <br />Toluene <br />BRH0053 <br />matrix Spike 0809910-01 <br />ND <br />22,510 <br />25.000 <br />ug/L <br />90.0 <br />70-130 <br />Matrix Spike Duplicate 0809910-01 <br />ND <br />22.630 <br />25.000 <br />ug/L 0.6 <br />90.5 <br />20 <br />70-130 <br />Trichloroethene <br />BRH0053 <br />Matrix Spike 0809910-01 <br />NO <br />23,590 <br />25.000 <br />ug/L <br />94.4 <br />- <br />Matrix Spike Duplicate 0809910-01 <br />ND <br />23.670 <br />25-000 <br />ug/L 0.3 <br />94.7 <br />20 <br />70-130 <br />1,2-Oichloroethane-d4 (Surrogate) <br />BRH0053 <br />Matrix Spike 0809910-01 <br />ND <br />10,470 <br />10.000 <br />ug/L <br />105 <br />76-114 <br />Matrix Spike Duplicate 0809910-01 <br />ND <br />10.950 <br />10.000 <br />ug/L <br />110 <br />76-114 <br />Toluene -d8 (Surrogate) <br />BRH0053 <br />Matrix Spike 0809910-01 <br />ND <br />9,8000 <br />10.000 <br />ug/L <br />98.0 <br />88-110 <br />Matrix Spike Duplicate 0809910-01 <br />ND <br />9.8100 <br />10.000 <br />ug/L <br />98.1 <br />88-110 <br />4-Bromofluorobenzene (Surrogate) <br />BRH0053 <br />Matrix Spike 0809910-01 <br />ND <br />9.7900 <br />10.000 <br />ug/L <br />97.9 <br />86-115 <br />Matrix Spike Duplicate 0809910-01 <br />ND <br />9.5900 <br />10.000 <br />ug/L <br />95.9 <br />86-115 <br />The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. <br />All resuks listed in this report we for the exclusive use of the submitting party. BC Laboratories, Inc. assumes no responsibility for report alteration, separation, detachment or third party interpretation. <br />Page 31 of 36 <br />4100 Atlas Court Bakersfield, CA 93308 <br />(661) 327-4911 FAX (661) 327-1918 <br />www.bclabs.com <br />Certifications: California - ELAP Certification Number 1186; Nevada <br />Administrative Code - NAC -445A <br />