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CALIFORNIA LABORATORY SERVICES <br /> <br />Committed. Responsive. Flexible. <br /> <br />10/20/21 15:04 <br />APEX Envirotech Inc. - Gold River Project: Waterloo Food and Fuel <br />11291 Pyrites Wy. Suite B <br /> Project Number: WFF52.001 <br /> <br />CLS Work Order #: 21J0672 <br />Gold River, CA 95670 <br /> <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 />5-6 @5 (21J0672-11) Soil Sampled: 10/11/21 11:00 Received: 10/12/21 08:10 <br />1,2-Dichloroethane ND 5.0 µg/kg 1 2108763 10/19/21 EPA 8260B <br />1,2-Dibromoethane (EDB) ND 5.0 <br />Surrogate: 1,2-Dichloroethane-d4 123 % 50-125 It <br />Surrogate: Toluene-d8 95% 62-125 <br />Surrogate: 4-Bromofluorobenzene 99% 50-128 <br />S-6 @ 10 (21J0672-12) Soil Sampled: 10/11/21 11:00 Received: 10/12/21 08:10 <br />Naphthalene ND 5.0 µg/kg 1 2108763 10/19/21 10/19/21 EPA 8260B <br />Benzene ND 5.0 <br />Toluene ND 5.0 <br />Ethylbenzene ND 5.0 <br />II II II II <br />Xylenes (total) ND 10 <br />/I II 11 <br />Di-isopropyl ether <br />Ethyl tert-butyl ether <br />ND 5.0 „ „ <br />ND 5.0 <br />,, <br />Methyl tert-butyl ether <br />tert-Amyl methyl ether <br />ND 5.0 <br />ND 5.0 <br />.. ,, <br />. <br />,, <br />tert-Butyl alcohol ND 50 <br />I/ II <br />" <br />II <br />1,2-Dichloroethane ND 5.0 " <br />II 11 " <br />1,2-Dibromoethane (EDB) ND 5.0 <br />., ,, <br />" I/ II It <br />Surrogate: 1,2-Dichloroethane-d4 <br />Surrogate: Toluene-d8 <br />Surrogate: 4-Bromofluorobenzene <br />S-7 @5 (21J0672-13) Soil Sampled: 10/11/21 11:25 <br />119 % <br />94 % <br />100% <br />Received: 10/12/21 08:10 <br />50-125 <br />62-125 <br />50-128 <br />/I <br />/I <br />Naphthalene ND 5.0 µg/kg 1 2108763 10/19/21 10/19/21 EPA 82608 <br />Benzene ND 5.0 .. ,, ., ,, <br />Toluene ND 5.0 0 ,, <br />Ethylbenzene ND 5.0 01 II 0 II II <br />Xylenes (total) ND 10 <br />II /I II II II II <br />Di-isopropyl ether ND 5.0 0 " <br />3249 Fitzgerald Road, Rancho Cordova, CA 95742 I 800.638.7301 I Tel: 916.638.7301 xl 02 I Fax: 916.638.4510 I www.californialab.com <br />Small Business #2916 I ELAP #1233 I NA1CS #541380 I CA SWRCB ELAP Accreditation/Registration Number 1233