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7M <br /> Laboratories Inc. . <br /> Environmental Testing Laboratory Since 1949 <br /> Ground Zero Analysis , Inc. Reported : 01 /27/2020 7 :46 <br /> 1172 Kansas Avenue Project: Bentz - Associated Tractor <br /> Modesto , CA 95351 Project Number: 1174 <br /> Project Manager: Project Manager <br /> Volatile Organic Analysis ( EPA Method 826013 ) <br /> BCL Sample ID: 2002021 -01 Client Sample Name : SB20-01 - 12' , 1 /16/2020 9 : 15 : OOAM , AD , GZA <br /> MB Lab <br /> Constituent Result Units PQL MDL Method Bias Quals Run # <br /> Ethyl t-butyl ether ND mg/kg 0.0050 0. 00014 EPA-8260B ND 1 <br /> p- & m-Xylenes ND mg/kg 0. 0050 0. 0038 EPA-8260B ND 1 <br /> o-Xylene ND mg/kg 0.0050 0 . 0021 EPA-8260B ND 1 <br /> Total Purgeable Petroleum ND mg/kg 0.20 0 . 13 Luft-GC/MS ND 1 <br /> Hydrocarbons <br /> 1 ,2-Dichloroethane-d4 (Surrogate) 110 % 70 - 121 (LCL - UCL) EPA-8260B 1 <br /> Toluene-d8 (Surrogate) 99.7 % 81 - 117 (LCL - UCL) EPA-8260B 1 <br /> 4-Bromofluorobenzene (Surrogate) 102 % 74 - 121 (LCL - UCL) EPA-8260B 1 <br /> Run QC <br /> Run # Method Prep Date Date/Time Analyst Instrument Dilution Batch ID <br /> f <br /> 1 EPA-8260B 01 /21 /20 10:00 01 /22/20 07:20 BYM MS-V2 1 B068809 <br /> The results in Ihta report apply to the samples analyzed in accordance with the chain ofeursiody document . This analytical report must be mproduced in os 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 /> Report ID: 1000990981 4100 Atlas Court Bakersfield, CA 93308 (661 ) 327-4911 FAX (661 ) 327-1918 www. bclabs.com Page 8 of 35 <br />