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® ® = ® = M <br />Laboratories, Inc. �jl <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 63304 Project Manager: Erin Fanning <br />Volatile Organic Analysis (EPA Method 8260) <br />Quality Control••Precision <br />Control Limits <br />Source Source Spike Percent Percent <br />Constituent Batch ID QC Sample Type Sample ID Result Result Added units RPt3 Recovery RPD Recovery Lab Quals <br />Benzene <br />BTC0897 <br />Matrix Spike 1002046-82 <br />ND <br />27.410 <br />25.000 <br />ug/L <br />88-110 <br />110 <br />Spike Duplicate 1002046-82 <br />70-130 <br />9.8900 <br />,.. _ ...- <br />Matrix Spike Duplicate 1002046-82 <br />_..-- ...__._.... --- . _ _......... ....._.__.- .._....__..__.._.. <br />ND <br />- - --- <br />27.050 <br />... <br />25.000 <br />ug/L <br />1.3 <br />108 <br />20 <br />70-130 <br />-..._._ -- - ..._.. .. _..._.......... <br />Bromodichtoromethane <br />._ __...._. _ <br />BTC0897 <br />Matrix Spike 1002046-82 <br />NO <br />23.950 <br />25.000 <br />ug/L <br />ug/L <br />95.8 <br />86-115 <br />70-130 <br />Spike 1002046-86 <br />NO <br />Matrix Spike Duplicate 1002046-82 <br />ND <br />24.860 <br />25.000 <br />_...._.. ..__..._..._.__.._..___.___-- <br />ug/L <br />3.7 <br />99.4 <br />20 <br />70-130 <br />Chlorobenzene <br />BTC0897 <br />__.._.__..._----- <br />Matrix Spike 1002046-82 <br />ND <br />24.740 <br />25.000 <br />ug/L <br />99.0 <br />70-130 <br />__.__ ..__-._._-------_--- <br />Matrix Spike Duplicate 1002046-82 <br />- --.--. _.----_-___._.. __._.-__.--._..- <br />ND <br />25.740 <br />_ --- - <br />25.000 <br />___..__............. <br />ug/L <br />4.0 <br />103 <br />------...__..__. <br />20 <br />_..._ .__._ <br />70-130 <br />- --- ---------- <br />____Chloroethane <br />.......-_-------- <br />Chloroethane <br />BTC0897 <br />Matrix Spike 1002046-82 <br />ND <br />29.430 <br />25.000 <br />ug1L <br />118 <br />70-130 <br />Matrix Spike Duplicate 1002046-82 <br />ND <br />30.050 <br />25.000 <br />ug/L <br />2.1 <br />120 <br />20 <br />70-130 <br />1,4 -Dichlorobenzene <br />BTC0897 <br />Matrix Spike 1002046-82 <br />ND <br />22.370 <br />25.000 <br />ug/L <br />89.5 <br />70-130 <br />Matrix Spike Duplicate 1002046-82 <br />ND <br />23.440 <br />25.000 <br />ug/L <br />4.7 <br />93.8 <br />20 <br />70-130 <br />1,1-Dichloroethane <br />BTC0897 <br />Matrix Spike 1002046-82 <br />__..__. <br />ND <br />28.110 <br />_..._.....-----_---.._..__._..__.._._..._._.. <br />25.000 <br />ug/L <br />_._..- <br />112 <br />--------__.._..__..-..-.--_.._-.._---. <br />70-130 <br />Matrix Spike Duplicate 1002046-82 <br />ND <br />27.230 <br />25.000 <br />ug/L <br />3.2 <br />109 <br />20 <br />70-130 <br />1,1-Dichloroethene <br />STC0897 <br />Matrix Spike 1002046-82 <br />ND <br />30.100 <br />25.000 <br />ug/L <br />120 <br />70-130 <br />Matrix Spike Duplicate 1002046-82 <br />ND <br />30.370 <br />25.000 <br />ug/L <br />0.9 <br />121 <br />20 <br />70-130 <br />Toluene <br />STC0897 <br />Matrix Spike 1002046-82 <br />ND <br />26.090 <br />25.000 <br />ug/L <br />104 <br />70-130 <br />Matrix Spike Duplicate 1002046-82 <br />ND <br />26.750 <br />25.000 <br />ug/L <br />2.5 <br />107 <br />20 <br />70-130 <br />Trichloroethene <br />BTC0897 <br />Matrix Spike 1002046-82 <br />ND <br />26.790 <br />25.000 <br />ug/L <br />107 <br />70-130 <br />Matrix Spike Duplicate 1002046-82 <br />NO <br />27.940 <br />25.000 <br />ug/L <br />4.2 <br />112 <br />20 <br />70-130 <br />1,2-Dichloroethane-d4 (Surrogate) <br />BTC0897 <br />Matrix Spike 1002046-82 <br />NO <br />9.5000 <br />10.000 <br />ug/L <br />95.0 <br />76-114 <br />Matrix Spike Duplicate 1002046-82 <br />NO <br />8.7300 <br />10.000 <br />ug/L <br />87.3 <br />76-114 <br />Toluene -d8 (Surrogate) BTC0897 Matrix <br />Spike 1002046-82 <br />ND <br />10.100 <br />10.000 <br />ug/L <br />101 <br />88-110 <br />Matrix <br />Spike Duplicate 1002046-82 <br />NO <br />9.8900 <br />10.000 <br />ug/L <br />98.9 <br />88-110 <br />------- ..._ <br />4-Bromofluorobenzene (Surrogate) BTC0897 Matrix <br />Spike 1002046-82 <br />NO <br />9.4500 <br />10.000 <br />ug/L <br />94.5 <br />86-115 <br />Matrix <br />Spike Duplicate 1002046-82 <br />NO <br />9.2600 <br />10.000 <br />ug/L <br />92.6 <br />86-115 <br />Benzene BTC0953 Matrix <br />Spike 1002046-86 <br />NO <br />29.180 <br />25.000 <br />ug/L <br />117 <br />70-130 <br />Matrix <br />Spike Duplicate 1002046-86 <br />ND <br />27.630 <br />25.000 <br />ug/L <br />5.5 111 <br />20 70-130 <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 occlusive use of tlrc submitting party. BC Laboratories, hrc, assumes no responsibility for report alteration, separation, detaclunctn or third nary interpretation. <br />4100 Atlas Court Bakersfield, CA 93308 (661) 327-4911 FAX (661) 327-1918 www.bclabs.com Page 31 of 44 <br />Certifications: California - ELAP Certification Number 1186; Nevada Administrative Code - NAC -445A <br />