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® i ® M ® M M = ® = = ® = M M i <br /> �- <br /> Laboratories, Inc. , <br /> Environmental Testing Laboratory Since 1949 <br /> Herst Associates Project: NCYC Reported: 05/14/2008 10:26 <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 Method6260) <br /> Quality Control Report - 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 Recove Lab Quals <br /> Benzene BRE0661 Matrix Spike 0806090-01 0 24.330 25.000 ug/L 97.3 70-130 <br /> Matrix Spike Duplicate 0806090-01 0 26.090 25.000 ug/L 6.7 104 20 70-13-0 <br /> _ _ <br /> -.._-_ ..-..__. <br /> Bromodichloromethane BRE0661 Matrix Spike 0806090-01 0 26.520 25.000 ug/L 106 70- 130 <br /> Matrix Spike Duplicate 0806090-01 0 26.800 25.000 ug/L 0.9 107 20 70-130 <br /> - --- - ------_..... <br /> -- -- - - <br /> Chlorobenzene BRE0661 Matrix Spike 0806090-01 0 25.230 25.000 ug/L 101 70- 130 <br /> Matrix Spike Duplicate 0806090-01 0 25.410 25.000 ug/L 1.0 102 20 70-130 <br /> -- - - -- - ------ --- _..... <br /> . <br /> Chloroethane BRE0661 Matrix Spike 0806090-01 0 23.520 25.000 ug/L 94.1 70-130 <br /> Matrix Spike Duplicate 0806090-01 0 25.560 25.000 ug/L 8.1 102 20 70-130 <br /> ....... - -- ...... _.__ -_...... - - -.-.- -- <br /> 1,4-Dichlorobenzene BRE0661 Matrix Spike 0806090-01 0 25.380 25.000 ug/L 102 70-130 <br /> Matrix Spike Duplicate 0806090-01 0 25.670 25.000 ug/L 1.0 103 20 70-130 <br /> 1,1-Dichloroethane BRE0661 Matrix Spike 0806090-01 0 25.160 25.000 ug/L 101 70-130 <br /> Matrix Spike Duplicate 0806090-01 0 26.520 25.000 ug/L 4.8 106 20 70-130 <br /> 1,1-Dichioroethene BRE0661 Matrix Spike 0806090-01 0 26.470 25.000 ug/L 106 70-130 <br /> Matrix Spike Duplicate 0806090-01 0 27.780 25.000 ug/L 4.6 111 20 _._70-130 <br /> - .. --- - -- -....... . ._.. <br /> Toluene BRE0661 Matrix Spike 0806090-01 0 25.610 25.000 ug/L 102 70-130 <br /> Matrix Spike Duplicate 0806090-01 0 25.980 25.000 ug/L 1.9 104 20 70-130 <br /> - <br /> ..........------ ...... - <br /> Trichloroethene BRE0661 Matrix Spike 0806090-01 0 25.860 25.000 ug/L 103 70-130 <br /> Matrix Spike Duplicate 0806090-01 0 26.470 25.000 ug/L 2.9 106 20 70-130 <br /> ............- ..__._.._._..._--_. ... .... _._.__ .. _._-._.. <br /> 1,2-Dichioroethane-d4(Surrogate) BRE0661 Matrix Spike 0806090-01 ND 9.8700 10.000 ug/L 98.7 76-114 <br /> Matrix Spike Duplicate 0806090-01 ND 10.160 10.000 ug/L 102 76-114 <br /> .. - - -._.- <br /> Toluene-d8(Surrogate) BRE0661 Matrix Spike 0806090-01 ND 9.9900 10.000 ug/L 99.9 88-110 <br /> Matrix Spike Duplicate 0806090-01 ND 9.8200 10.000 ug/L 98.2 88-110 <br /> .-.. - _ __..._ --..- _-.__ . ---- <br /> -- <br /> 4-Bromofluorobenzene(Surrogate) BRE0661 Matrix Spike 0806090-01 ND 9.7500 10-000 ug/L 97.5 86-115 <br /> Matrix Spike Duplicate 0806090-01 ND 9.4800 10.000 ug/L 94.8 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 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 31 of 36 <br />