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CALIFORNIA LABORATORY SERVICES <br /> Committed. Responsive. Flexible. <br /> 02/26/21 14:12 <br /> APEX Envirotech Inc.-Gold River Project: Panella Tracking <br /> 11291 Pyrites Wy.Suite B Project Number: [none] CLS Work Order#:21131201 <br /> Gold River,CA 95670 Project Manager: George Converse COC#:211890/205920/205921 <br /> Volatile Organic Compounds by EPA Method 8260B-Quality Control <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 2101597-EPA 5030 Soil MS <br /> Blank(2101597-BLK1) Prepared&Analyzed:02/24/21 <br /> Di-isopropyl ether ND 5.0 gg/kg <br /> Ethyl tert-butyl ether ND 5.0 <br /> Methyl tert-butyl ether ND 5.0 <br /> tert-Amyl methyl ether ND 5.0 " <br /> tert-Butyl alcohol ND 50 <br /> Surrogate:Toluene-d8 22.9 30.0 76 60-140 <br /> LCS(2101597-BS1) Prepared&Analyzed:02/24/21 <br /> Methyl tert-butyl ether 18.4 5.0 gg/kg 20.0 92 60-140 <br /> Benzene 18.8 5.0 20.0 94 60-140 <br /> Surrogate:Toluene-d8 29.0 30.0 97 60-140 <br /> LCS Dup(2101597-BSD1) Prepared&Analyzed:02/24/21 <br /> Methyl tert-butyl ether 22.5 5.0 gg/kg 20.0 113 60-140 20 30 <br /> Benzene 18.6 5.0 20.0 93 60-140 1 30 <br /> Surrogate:Toluene-d8 29.7 30.0 99 60-140 <br /> Matrix Spike(2101597-MS1) Source:21131201-01 Prepared:02/24/21 Analyzed:02/25/21 <br /> Methyl tert-butyl ether 20.6 5.0 gg/kg 20.0 ND 103 60-140 <br /> Benzene 17.5 5.0 20.0 ND 87 60-140 <br /> Surrogate:Toluene-d8 31.3 30.0 104 60-140 <br /> Matrix Spike Dup(2101597-MSD1) Source:21131201-01 Prepared:02/24/21 Analyzed:02/25/21 <br /> Methyl tert-butyl ether 17.2 5.0 gg/kg 20.0 ND 86 60-140 18 30 <br /> Benzene 17.9 5.0 20.0 ND 89 60-140 2 30 <br /> Surrogate:Toluene-d8 30.5 30.0 102 60-140 <br /> 3249 Fitzgerald Road,Rancho Cordova,CA 95742 1 800.638.7301 1 Tel:916.638.7301 x102 1 Fax:916.638.4510 1 www.californialab.com <br /> Small Business#2916 1 ELAP#1233 1 NAICS#541380 1 CA SWRCB ELAP Accreditation/Registration Number 1233 <br />