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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 /> <br />Project Number: WFF02.001-QM <br /> <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 />Analyte <br />Reporting <br />Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br />MW-1 (2110960-01) Water Sampled: 09/14/21 08:10 Received: 09/20/21 13:45 <br />Naphthalene 15 0.50 µg/L 1 2108023 09/22/21 09/22/21 EPA 8260B <br />Benzene 1.0 0.50 „ .. <br />Toluene ND 0.50 .. „ <br />Ethylbenzene 2.4 0.50 <br />Xylenes (total) ND 1.0 <br />Di-isopropyl ether ND 0.50 <br />Ethyl tert-butyl ether ND 0.50 <br />Methyl tert-butyl ether ND 0.50 <br />tert-Amyl methyl ether ND 0 .50 <br />H II II <br />tert-Butyl alcohol ND 5.0 ,, ,, U <br />1,2-Dichloroethane ND 0.50 <br />n n of n n <br />Surrogate: 1,2-Dichloroethane-d4 <br />Surrogate: Toluene-d8 <br />109% <br />100% <br />66-135 <br />72-125 <br />I/ <br />tl <br />Surrogate: 4-Bromofluorobenzene 93% 73-125 <br />MW-2 (2110960-02) Water Sampled: 09/14/21 09:05 Received: 09/20/21 13:45 <br />Naphthalene 200 0.50 µg/L 1 2108023 09/22/21 09/22/21 EPA 8260B <br />Benzene 700 5.0 II 10 II II H II <br />Toluene 15 0.50 " 1 <br />Ethylbenzene 21 0.50 ,, ,, <br />Xylenes (total) II 1.0 <br />Di-isopropyl ether ND 0.50 It 11 <br />Ethyl tert-butyl ether 1.3 0.50 ,, ,, ., <br />Methyl tert-butyl ether 160 5.0 0 10 0 0 <br />tert-Amyl methyl ether ND 0.50 ,, 1 <br />tert-Butyl alcohol 78 5.0 <br />II 11 <br />U U II II <br />1,2-Dichloroethane ND 0.50 <br />Surrogate: 1,2-Dichloroethane-d4 116% 66-135 <br />Surrogate: Toluene-d8 97% 72-125 Pi <br />Surrogate: 4-Bromoiluorobenzene 98 % 73-125 IP <br />3249 Fitzgerald Rood, Rancho Cordova, CA 95742 I 800.638.7301 I Tel: 916.638.7301 x102 I Fox: 916.638.4510 I www.colifornialab.com <br />Small Business #2916 I ELAP #1233 I NAICS #541380 I CA SWRCB ELAP Accreditation/Registration Number 1233