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® M M M M M M M M M M <br /> a�oratories Inc. i <br /> Environmental Testing Laboratory Since 1949 <br /> Herst Associates Project: NCYC Reported: 03/24/2009 11:14 <br /> 4630 South Highway 94 North Outer Road Project Number: Monthly <br /> Saint Charles,MO 63304 Project Manager: David Vasbinder <br /> Volatile Organic Analysis (EPA Method8260) <br /> Quality Control Report - Laboratory Control Sample <br /> Control Limits <br /> Spike Percent Percent <br /> Constituent Batch ID OC Sample ID QC Type Result Level PQL Units Recove RPD Recovery RPD Lab Quaffs <br /> Benzene BSC1391 BSC1391-BSI LCS 23.620 25.000 0.50 ug/L 94.5 70-130 <br /> .- ...---11.11_.—. --- -._.— . —1111.._.._ -----.1111_. -- -------- - --- — ---. .....------ ----- --- — <br /> Bromodichioromethane BSC1391 BSC1391-BSI LCS 23.800 25.000 0.50 ug/L 95.2 70-130 <br /> -------------- <br /> --111__1._-. —.•...._.._. - — — 1111__..._— . .- -- _. — <br /> Chlorobenzene BSC1391 BSC1391-BS1 LCS 22.480 25.000 0.50 — ug/L 89.9 70-130 <br /> -.—_..__...... -..---.------___.. ^._.�...._____._. _1111— _ —_ _ <br /> Chloroethane BSC1391 BSC1391-BS1 LCS 22.650 25.000 0.50 ug/L 90 6 70-130 <br /> _..____._ _.._._...— -...—....-. —1 111. ..__-.._1.111__ ._- �-. _ - — - - - <br /> 1,4-Dichlorobenzene BSC1391 BSC1391-BS1 LCS 20.510 25.000 0.50 ug/L 82.0 70-130 <br /> 1,1-Dichloroethane BSC1391 BSC1391-BS1 LCS 25.040 25.000 0.50 ug/L 100 70 130 <br /> .—.--- -----.—11.11 <br /> 1,1-Dichloroethene BSC1391 BSC1391-BS1 LCS 22.880 25.000 0.50 ug/L___ 91.5 70-130 <br /> ....._.___. .�_ _. .-.- <br /> Toluene BSC1391 BSC1391-BSI LCS 21.960 25.000 0.50 ug/L 87.8 70-130 <br /> ..._....__..... —_.._. 11__11. <br /> Trichloroethene BSC1391 BSC1391-BSI LCS 23.170 25.000 0.50 ug/L 92.7 70-130 <br /> -_._. ..-__1111.—._--..- -__—_.___- -- ----..._11_11...— __.. ---- 1111.— _— -- .---_ ----•— .._ _ _1.111. �--- — ' <br /> 1,2-Dichloroethane-d4(Surrogate) BSC1391 BSC1391-BS1 LCS 9.7900 10-000 ug/L 97.9 76-114 <br /> , <br /> Toluene-d8(Surrogate) BSC1391 BSC1391 BS1 LCS 10 060 10.000 ug/L 101 88-110 <br /> __------ —.. d <br /> 4-Bromofluorobenzene(Surrogate) BSC1391 BSC1391-BSI LCS 9.7100 10.000 ug/L 97A 86-115 <br /> i <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 /> AU results listed in this report are for rite exclusive use of the submitting party. BC Laboratories,Inc.assumes no responsibility for report alteration,separation,detachment or third patty interpretation. <br /> 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.bclabs.com Page 32 of 36 <br /> Certifications: California-ELAP Certification Number 1186; Nevada Administrative Code-NAC-445A <br />