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4640 Pecos Street ' Unit C <br />Denver, Colorado 8021 1 <br />303.433.1322.; Laboratory <br />03.265.9645 j Fax <br />ti.' i;4 4z: <br />LA80RAT©RY. IHG. <br />Molen & Associates, LLC Mark Molen <br />2090 East 104the Avenue - #205 Project Number: N/A <br />Thornton CO 80233 Project: Broda's <br />Volatile Organic Compounds by EPA Method 8260B - Quality Control <br />Origins Laboratory, Inc. <br /> Reporting Spike Source %REC RPD <br />Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br />Batch 91-118004 - EPA 50308 <br />Blank.(91-118004-BLKI) Prepared: 08/18/2009 Analyzed: 08/19/2009 <br />Methyl tert-Butyl Ether No 1.0 ug/L <br />Methylcyclohexane ND 1.0 <br />Naphthalene ND 1.0 <br />sec-Butylbenzene ND 1.0 <br />n-Butylbenzene ND 1.0 <br />n-Propylbenzene ND 1.0 <br />o-Xylene ND 1.0 <br />Styrene ND 1.0 <br />Tetrachloroethene ND 1.0 <br />Toluene ND 1.0 <br />trans- 1,2-Dichloroethene No 1.0 <br />trans-1 3-Dichloropropene ND 1.0 <br />Trichloroethene ND 1.0 <br />Trichlorotluoromethane ND 1.0 <br />Vinyl acetate ND 5.0 <br />Vinyl chloride ND 1.0 <br />Surrogate: 1,2-Dich/oroethane-d4 55.6 62.5 88.9 76.5-123 <br />Surrogate:4-Bromofluorobenzene 170 62.5 776 75.5-733 5-CC <br />Surrogate: Toluene-d8 68.9 62.5 110 71.1-173 <br /> Prepared: 08/18/2009 Analyzed: 08/19/2009 <br />LCS (9H1 8004-BSI) <br />Benzene 55.0 1.0 ug/L 50.0 110 81.7-130 <br />Chlorobenzene 34.0 1.0 50.0 68.1 67.9-117 <br />Toluene 36.6 1.0 50.0 73.3 72-121 <br />Trichloroethene 49.4 1.0 50.0 98.8 74.7-139 <br />Surrogate: 1, 2-Dichloroethane-d4 <br />Surrogate: 4-Bromofluorobenzene <br />Surrogate: Toluene-d8 <br />Origins Laboratory, Inc. <br />1014- <br />62.5 109 76.5-123 <br />68.2 <br />67.4 62.5 log 75.5-133 <br />52.9 62.5 84.6 77.1-173 <br />The results in this report apply to the samples analyzed in <br />accordance with the chain of custody document. This <br />analytical report must be reproduced in its entirety. <br />Page 14 of 16 <br />Noelle E Doyle, Laboratory Manager