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ALS Enuironmenta1 <br /> CERTIFICATE OF ANALYSIS <br /> CLIENT: GeoEngineers, Inc. DATE: 1/25/2021 <br /> 1101 Fawcett Ave. S., Suite 200 ALS SDG#: EV21010084 <br /> Tacoma, WA 98402 WDOE ACCREDITATION: C601 <br /> CLIENT CONTACT: Jacob Letts <br /> CLIENT PROJECT: Smith St. Mill <br /> LABORATORY CONTROL SAMPLE RESULTS <br /> SPIKE LIMITS ANALYSIS ANALYSIS BY <br /> SPIKED COMPOUND METHOD %REC RPD QUAL ADDED RESULT MIN MAX RPD DATE <br /> Acetone-BSD SW8260D 108 5 10.0 10.8 50 150 25 01/14/21 DLC <br /> 1,1-Dichloroethene-BS SW8260D 109 10.0 10.9 72.5 136 01/14/21 DLC <br /> 1,1-Dichloroethene-BSD SW8260D 102 7 10.0 10.2 72.5 136 20.5 01/14/21 DLC <br /> Methylene chloride-BS SW8260D 122 10.0 12.2 50 150 01/14/21 DLC <br /> Methylene chloride-BSD SW8260D 117 4 10.0 11.7 50 150 25 01/14/21 DLC <br /> Acrylonitrile-BS SW8260D 109 10.0 10.9 50 150 01/14/21 DLC <br /> Acrylonitrile-BSD SW8260D 102 6 10.0 10.2 50 150 25 01/14/21 DLC <br /> Methyl tert butyl ether(MTBE)-BS SW8260D 133 10.0 13.3 50 150 01/14/21 DLC <br /> Methyl tert butyl ether(MTBE)-BSD SW8260D 125 6 10.0 12.5 50 150 25 01/14/21 DLC <br /> trans-1,2-Dichloroethene-BS SW8260D 108 10.0 10.8 50 150 01/14/21 DLC <br /> trans-1,2-Dichloroethene-BSD SW8260D 102 6 10.0 10.2 50 150 25 01/14/21 DLC <br /> 1,1-Dichloroethane-BS SW8260D 103 10.0 10.3 50 150 01/14/21 DLC <br /> 1,1-Dichloroethane-BSD SW8260D 99.8 3 10.0 9.98 50 150 25 01/14/21 DLC <br /> 2-Butanone(Methyl ethyl ketone) SW8260D 104 10.0 10.4 50 150 01/14/21 DLC <br /> (MEK)-BS <br /> 2-Butanone(Methyl ethyl ketone) SW8260D 105 1 10.0 10.5 50 150 25 01/14/21 DLC <br /> (MEK)-BSD <br /> cis-1,2-Dichloroethene-BS SW8260D 107 10.0 10.7 50 150 01/14/21 DLC <br /> cis-1,2-Dichloroethene-BSD SW8260D 101 5 10.0 10.1 50 150 25 01/14/21 DLC <br /> 2,2-Dichloropropane-BS SW8260D 126 10.0 12.6 50 150 01/14/21 DLC <br /> 2,2-Dichloropropane-BSD SW8260D 115 9 10.0 11.5 50 150 25 01/14/21 DLC <br /> Chlorobromomethane-BS SW8260D 108 10.0 10.8 50 150 01/14/21 DLC <br /> Chlorobromomethane-BSD SW8260D 102 5 10.0 10.2 50 150 25 01/14/21 DLC <br /> Chloroform(Trichloromethane)-BS SW8260D 107 10.0 10.7 50 150 01/14/21 DLC <br /> Chloroform(Trichloromethane)-BSD SW8260D 101 6 10.0 10.1 50 150 25 01/14/21 DLC <br /> 1,1,1-Trichloroethane-BS SW8260D 112 10.0 11.2 50 150 01/14/21 DLC <br /> 1,1,1-Trichloroethane-BSD SW8260D 105 6 10.0 10.5 50 150 25 01/14/21 DLC <br /> 1,1-Dichloropropene-BS SW8260D 109 10.0 10.9 50 150 01/14/21 DLC <br /> 1,1-Dichloropropene-BSD SW8260D 102 7 10.0 10.2 50 150 25 01/14/21 DLC <br /> 1,2-Dichloroethane-BS SW8260D 107 10.0 10.7 50 150 01/14/21 DLC <br /> 1,2-Dichloroethane-BSD SW8260D 103 4 10.0 10.3 50 150 25 01/14/21 DLC <br /> Benzene-BS SW8260D 108 10.0 10.8 74.7 143 01/14/21 DLC <br /> Benzene-BSD SW8260D 103 5 10.0 10.3 74.7 143 20.5 01/14/21 DLC <br /> Trichloroethene-BS SW8260D 108 10.0 10.8 74.4 141 01/14/21 DLC <br /> Trichloroethene-BSD SW8260D 104 4 10.0 10.4 74.4 141 20.5 01/14/21 DLC <br /> 1,2-Dichloropropane-BS SW8260D 99.4 10.0 9.94 50 150 01/14/21 DLC <br /> 1,2-Dichloropropane-BSD SW8260D 95.1 4 10.0 9.51 50 150 25 01/14/21 DLC <br /> Dibromomethane-BS SW8260D 108 10.0 10.8 50 150 01/14/21 DLC <br /> Dibromomethane-BSD SW8260D 103 4 10.0 10.3 50 150 25 01/14/21 DLC <br /> Bromodichloromethane-BS SW8260D 104 10.0 10.4 50 150 01/14/21 DLC <br /> Bromodichloromethane-BSD SW8260D 99.5 4 10.0 9.95 50 150 25 01/14/21 DLC <br /> Page 24 <br /> ADDRESS 8620 Holly Drive, Suite 100, Everett,WA 9820 PHONE 425-356-2600 425-356-2626 <br /> ALS Group USA,Corp dba ALS Environmental <br /> www.aisgiobal.com <br /> RIGHT SO1-UTIOf15 -1-i. 1-1.1 1 1-11 <br />