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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 <br /> 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-5A (2110960-17) Water Sampled: 09/17/21 11:10 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 />0.87 <br />ND <br />ND <br />ND <br />ND <br />ND <br />ND <br />ND <br />ND <br />ND <br />0.50 µg/L <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 />0.50 <br />1 2108025 09/24/21 09/24/21 EPA 8260B <br /> <br />.11 <br /> <br />Surrogate: 1,2-Dichloroethane-d4 <br />Surrogate: Toluene-d8 <br />Surrogate: 4-Bromofluoroben:ene <br />113 % <br />100 % <br />113 % <br />66-135 <br />72-125 <br />73-125 <br />MW-5B (2110960-18) Water Sampled: 09/17/21 12:15 Received: 09/20/21 13:45 <br />Naphthalene ND 0.50 pg/L 1 2108025 09/24/21 09/24/21 EPA 82608 <br />Benzene 70 0.50 ,, ,, 0 <br />Toluene 0.54 0.50 II II II II II II <br />Ethylbenzene ND 0.50 <br />Xylenes (total) ND 1.0 <br />Di-isopropyl ether ND 0.50 1.1 <br />Ethyl tert-butyl ether 3.9 0.50 <br />II 0 II II <br />Methyl tert-butyl ether 31 0.50 ., ,. <br />tert-Amyl methyl ether ND 0.50 ,, II II II <br />tert-Butyl alcohol 260 5.0 <br />., ., <br />1,2-Dichloroethane ND 0.50 <br />Surrogate: 1,2-Dichloroethane-d4 133 % 66-135 <br />Surrogate: Toluene-d8 99% 72-125 <br />Surrogate: 4-Bromofluorobenzene 102 % 73-125 If <br />3249 Fitzgerald Rood, Rancho Cordova, CA 95742 I 800.638.7301 I Tel: 916.638.7301 x102 I Fax: 916.638.4510 I www.californialob.com <br />Small Business #2916 I ELAP #1233 I NAICS #541380 I CA SWRCB ELAP Accreditation/Registration Number 1233