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Laboratories Inc. <br /> Environmental Testing Laboratory Since 1949 <br /> Ground Zero Analysis,Inc. Reported: 05/01/2013 14:26 <br /> 1172 Kansas Avenue project: Groundwater Samples(Del Tech) <br /> Modesto,CA 95354 Project Number: 425.2 <br /> Project Manager: Andrew Dorn <br /> Volatile Organic Analysis (EPA Method 8260) <br /> BCL Sample ID: 1308594-08 Client Sample Name: 2nd Qtr.2013,MW-4,412512013 2:40:OOPM,Del Tech <br /> MB Lab <br /> Constituent Result Units PQL MDL Method Bias Quals Run# <br /> Benzene ND ugll- 0.50 0.083 EPA-82606 NO 1 <br /> 1,2-Dichloroethane 0.78 ug/L 0.50 0.17 EPA-82608 NO 1 <br /> Elhylbenzene 2.4 ugll- 0.50 0.098 EPA-82603 NO 1 <br /> Methyl t-butyl elher NO ug/L 0.50 0.11 EPA-82606 ND 1 <br /> Toluene NO ug1L 0.50 0.093 EPA-82608 NO 1 <br /> Total Xylenes NO ug/L 1.0 0.36 EPA-82608 ND 1 <br /> Total Purgeable Petroleum 1300 ug1L s0 7.2 Luft-GC/MS NO 1 <br /> Hydrocarbons <br /> 1.2-Dichloroethane-d4(Surrogate) 102 q 75-125 (LCL-UCL) EPA-82608 1 <br /> Toluene-d8(Surrogate) 104 % 80-120 (LCL-UCL) EPA-82608 1 <br /> 4-Bromo0uorobenzene(Surrogate) 94.6 % 80-120 (LCL-UCL) EPA-82608 1 <br /> Run QC <br /> Run# Method Prep Date Daterrime Analyst Instrument Dilution Batch ID <br /> 1 EPA-8260B 04130/13 05101113 05:25 JCC MS-Vt4 1 BWD2374 <br /> The resole,in this report apply to the sornples ormlyzed h,accordance whh rhe chain ofcosrody document.Thisannfyncol repo,must be reproduced in its entirety. <br /> All rcsnhs loud infl,h rcpon ort ronhe cxainsire sae ofihe mbnsining pan,. aC Leboruionas.Inc.xssunars na rcvWmiMliry far rryan almrxiiun.uwrrian.Jcurtnnnn or nnN wnY in¢rymaiion. <br /> 4100 Atlas Court Bakersllekl,CA 93308 (661)327-4911 FAX(6s1)327-i918 www.bclahs.com Page 16 of 22 <br />