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CALIFORNIA LABORATORY SERVICES <br /> <br />Committed. Responsive. Flexible. <br /> <br />09/27/21 14:52 <br />APEX Envirotech Inc. - Gold River Project: Waterloo Food and Fuel <br />11291 Pyrites Wy. Suite B <br /> Project Number: WFF02.001-QM CLS Work Order #: 2110960 <br />Gold River, CA 95670 <br /> Project Manager: Bryan Yates COC #: <br />Volatile Organic Compounds by EPA Method 8260B <br />Reporting <br />Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br />MW-9 (2110960-05) Water Sampled: 09/14/21 13:40 Received: 09/20/21 13:45 <br />Naphthalene <br />Benzene <br />Toluene <br />Ethylbenzene <br />Xylenes (total) <br />Di-isopropyl ether <br />Ethyl tert-butyl ether <br />Methyl tert-butyl ether <br />tert-Amyl methyl ether <br />tert-Butyl alcohol <br />1,2-Dichloroethane <br />ND <br />ND <br />ND <br />ND <br />ND <br />ND <br />ND <br />ND <br />ND <br />ND <br />ND <br /> <br />0.50 µg/L 1 2108023 09/22/21 09/22/21 EPA 8260B <br />0.50 <br />0.50 <br />0.50 <br />1.0 <br />0.50 <br />0.50 <br />0.50 <br />0.50 <br />5.0 <br /> <br />0.50 I/ 0 <br /> <br />Surrogate: 1,2-Dichloroethane-d4 124% 66-135 <br />Surrogate: Toluene-d8 97% 72-125 <br />Surrogate: 4-Bromoiluorobenzene 110 % 73-125 <br />MW-10 (2110960-06) Water Sampled: 09/16/21 12:10 Received: 09/20/21 13:45 <br />Naphthalene ND 0.50 p.g/L 1 2108023 09/22/21 09/22/21 EPA 8260B <br />Benzene ND 0.50 <br />II II II II II 0 <br />Toluene ND 0.50 ,, ,, ,, <br />Ethylbenzene ND 0.50 ,, <br />Xylenes (total) ND 1.0 " . <br />Di-isopropyl ether ND 0.50 ,, ,. ,, <br />Ethyl tert-butyl ether 2.6 0.50 ,, <br />Methyl tert-butyl ether 100 0.50 <br />tert-Amyl methyl ether ND 0.50 <br />., II /I II II <br />tert-Butyl alcohol ND 5.0 ,, ,, II /I <br />1,2-Dichloroethane ND 0.50 II II li <br />Surrogate: 1,2-Dichloroethane-d4 122 % 66-135 <br />Surrogate: Toluene-d8 100% 72-125 <br />Surrogate: 4-Bromofluorobenzene 117% 73-125 <br />3249 Fitzgerald Road, Rancho Cordova, CA 95742 I 800.638.7301 I Tel: 916.638.7301 x102 I Fax: 916.638.4510 I www.californialab.com <br />Small Business #2916 I ELAP #1233 I NAICS #541380 I CA SWRCB ELAP Accreditation/Registration Number 1233