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® = M ® ® M <br />Laboratories, Inc. N <br />Environmental Testing Laboratory Since 1949 <br />Herst Associates Project: NCYC Reported: 03/30/2010 13:26 <br />4630 South Highway 94 North Outer Road Project Number: [none] <br />Saint Charles, MO 633304 Project Manager: Erin Fanning <br />Volatile Organic Analysis (EPA Method 8260) <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 Recove RPD Recove Lab Quals <br />Bromodichloromethane <br />BTC0953 <br />Matrix Spike 1002046-86 <br />ND <br />24.850 <br />25.000 <br />uglL <br />99.4 <br />70-130 <br />Matrix Spike Duplicate 1002046-86 <br />ND <br />25.530 <br />25.000 <br />uglL <br />- <br />2.7 <br />102 <br />20 <br />70-130 <br />... ...... ......._-..._._ <br />Chlorobenzene <br />BTC0953 <br />Matrix Spike 1002046-86 <br />ND <br />25.660 <br />25.000 <br />ug/L <br />103 <br />_. <br />70-130 <br />Matrix Spike Duplicate 1002046-86 <br />ND <br />25.580 <br />25.000 <br />ug/L <br />0.3 <br />102 <br />20 <br />70-130 <br />Chloroethane <br />BTC0953 <br />Matrix Spike 1002046-86 <br />ND <br />31.970 <br />25.000 <br />ug/L <br />128 <br />70-130 <br />Matrix Spike Duplicate 1002046-86 <br />NO <br />30.760 <br />25.000 <br />ug/L <br />3.9 <br />123 <br />20 <br />70-130 <br />1,4 -Dichlorobenzene <br />BTC0953 <br />Matrix Spike 1002046-86 <br />ND <br />22.890 <br />25.000 <br />uglL <br />91.6 <br />70-130 <br />Matrix Spike Duplicate 1002046-86 <br />NO <br />23.060 <br />25.000 <br />ug/L <br />0.7 <br />92.2 <br />20 <br />70-130 <br />1,1-Dichloroethane <br />BTC0953 <br />Matrix Spike 1002046-86 <br />ND <br />29.830 <br />25.000 <br />ug/L <br />119 <br />70-130 <br />Matrix Spike Duplicate 1002046-86 <br />NO <br />28.510 <br />25.000 <br />ug/L <br />4.5 <br />114 <br />20 <br />70-130 <br />1,1-Dic hloroethene <br />BTC0953 <br />Matrix Spike 1002046-86 <br />NO <br />31.930 <br />25.000 <br />ug/L <br />128 <br />70-130 <br />Matrix Spike Duplicate 1002046-86 <br />NO <br />31.040 <br />25.000 <br />ug/L <br />2.8 <br />124 <br />20 <br />70-130 <br />Toluene <br />BTC0953 <br />Matrix Spike 1002046-86 <br />NO <br />26.350 <br />25.000 <br />ug/L <br />105 <br />70-130 <br />Matrix Spike Duplicate 1002046-86 <br />NO <br />26.630 <br />25.000 <br />ug/L <br />i,1 <br />107 <br />20 <br />.__._._..... <br />70-130 <br />------ _-- <br />Trichloroethene <br />BTC0953 <br />Matrix Spike 1002046-86 <br />NO <br />27.420 <br />25.000 <br />ug/L <br />110 <br />70-130 <br />Matrix Spike Duplicate 1002046-86 <br />NO <br />27.650 <br />25.000 <br />ug/L <br />0.8 <br />111 <br />20 <br />70-130 <br />1,2-Dichloroethane-d4 (Surrogate) <br />BTC0953 <br />Matrix Spike 1002046-86 <br />NO <br />10.260 <br />10.000 <br />ug/L <br />103 <br />76-114 <br />Matrix Spike Duplicate 1002046-86 <br />------ - .-._-........__.....- <br />NO <br />- -- <br />10.080 <br />- ------------ <br />10.000 <br />ug/L <br />-- - <br />__......-......_...----- <br />101 <br />--- <br />76-114 <br />----.-.._._.. <br />-..- --- --- - <br />Toluene -d8 (Surrogate) <br />BTC0953 <br />-- <br />Matrix Spike 1002046-86 <br />NO <br />10.080 <br />10.000 <br />ug/L <br />101 <br />88-110 <br />Matrix Spike Duplicate 1002046-86 <br />NO <br />10.140 <br />10.000 <br />uglL <br />101 <br />88-110 <br />-_._.....-- --- -- <br />4-Bromofluorobenzene Surrogate <br />- <br />BTC0953 <br />--- <br />Matrix Spike 1002046-86 <br />- <br />ND <br />9.4400 <br />10.000 <br />ug/L <br />94.4 <br />86-115 <br />Matrix Spike Duplicate 1002046-86 <br />NO <br />9.5800 <br />10.000 <br />ug/L <br />95.8 <br />86-115 <br />-- <br />Benzene <br />BTC1605 <br />Matrix Spike 1003610-21 <br />NO <br />26.470 <br />25.000 <br />ug/L <br />106 <br />70-130 <br />Matrix Spike Duplicate 1003610-21 <br />NO <br />27.510 <br />25.000 <br />ug/L <br />3.9 <br />110 <br />20 <br />70-130 <br />Bromodichloromethane <br />BTC1605 <br />Matrix Spike 1003610-21 <br />ND <br />23.580 <br />25,000 <br />ug/L <br />94.3 <br />70-130 <br />Matrix Spike Duplicate 1003610-21 <br />ND <br />25.100 <br />25.000 <br />ug/L <br />6.2 <br />100 <br />20 <br />70-130 <br />the results in this report apply to the samples analyzed in accordance with tine chain of custody document. nis analytical report tnust be reproduced in its entirety. <br />All results listed in flits report <br />are for the exclusive use of the submitting Party, BC Laboratories, <br />Inc. assumes no responsibility <br />for report alteration, <br />separation, detachment or third party interpretation. <br />4100 Atlas Court Bakersfield, CA 93308 <br />(661) 327-4911 <br />FAX (661) 327-1918 <br />www.bclabs.com <br />Page 32 of 44 <br />Certifications: California - ELAP Certification Number <br />1186; Nevada <br />Administrative Code - NAC -445A <br />