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ALS Enuironme ntal <br /> CERTIFICATE OF ANALYSIS <br /> CLIENT: GeoEngineers, Inc. DATE: 7/20/2021 <br /> 1101 Fawcett Ave. S., Suite 200 ALS SDG#: EV21070056 <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 96.3 3 10.0 9.63 50 150 25 07/14/21 DLC <br /> 1,1-Dichloroethene-BS SW8260D 116 10.0 11.6 72.5 136 07/14/21 DLC <br /> 1,1-Dichloroethene-BSD SW8260D 112 4 10.0 11.2 72.5 136 20.5 07/14/21 DLC <br /> Methylene chloride-BS SW8260D 90.7 10.0 9.07 50 150 07/14/21 DLC <br /> Methylene chloride-BSD SW8260D 93.3 3 10.0 9.33 50 150 25 07/14/21 DLC <br /> Acrylonitrile-BS SW8260D 118 10.0 11.8 50 150 07/14/21 DLC <br /> Acrylonitrile-BSD SW8260D 114 4 10.0 11.4 50 150 25 07/14/21 DLC <br /> Methyl tert butyl ether(MTBE)-BS SW8260D 104 10.0 10.4 50 150 07/14/21 DLC <br /> Methyl tert butyl ether(MTBE)-BSD SW8260D 103 1 10.0 10.3 50 150 25 07/14/21 DLC <br /> trans-1,2-Dichloroethene-BS SW8260D 110 10.0 11.0 50 150 07/14/21 DLC <br /> trans-1,2-Dichloroethene-BSD SW8260D 107 4 10.0 10.7 50 150 25 07/14/21 DLC <br /> 1,1-Dichloroethane-BS SW8260D 112 10.0 11.2 50 150 07/14/21 DLC <br /> 1,1-Dichloroethane-BSD SW8260D 108 3 10.0 10.8 50 150 25 07/14/21 DLC <br /> 2-Butanone(Methyl ethyl ketone) SW8260D 112 10.0 11.2 50 150 07/14/21 DLC <br /> (MEK)-BS <br /> 2-Butanone(Methyl ethyl ketone) SW8260D 112 0 10.0 11.2 50 150 25 07/14/21 DLC <br /> (MEK)-BSD <br /> cis-1,2-Dichloroethene-BS SW8260D 113 10.0 11.3 50 150 07/14/21 DLC <br /> cis-1,2-Dichloroethene-BSD SW8260D 110 2 10.0 11.0 50 150 25 07/14/21 DLC <br /> 2,2-Dichloropro pane-BS SW8260D 147 10.0 14.7 50 150 07/14/21 DLC <br /> 2,2-Dichloropro pane-BSD SW8260D 139 6 10.0 13.9 50 150 25 07/14/21 DLC <br /> Chlorobromomethane-BS SW8260D 108 10.0 10.8 50 150 07/14/21 DLC <br /> Chlorobromomethane-BSD SW8260D 108 0 10.0 10.8 50 150 25 07/14/21 DLC <br /> Chloroform(Trichloromethane)-BS SW8260D 113 10.0 11.3 50 150 07/14/21 DLC <br /> Chloroform(Trichloromethane)-BSD SW8260D 110 2 10.0 11.0 50 150 25 07/14/21 DLC <br /> 1,1,1-Trichloroethane-BS SW8260D 119 10.0 11.9 50 150 07/14/21 DLC <br /> 1,1,1-Trichloroethane-BSD SW8260D 115 3 10.0 11.5 50 150 25 07/14/21 DLC <br /> 1,1-Dichloropropene-BS SW8260D 119 10.0 11.9 50 150 07/14/21 DLC <br /> 1,1-Dichloropropene-BSD SW8260D 115 3 10.0 11.5 50 150 25 07/14/21 DLC <br /> 1,2-Dichloroethane-BS SW8260D 119 10.0 11.9 50 150 07/14/21 DLC <br /> 1,2-Dichloroethane-BSD SW8260D 119 0 10.0 11.9 50 150 25 07/14/21 DLC <br /> Benzene-BS SW8260D 118 10.0 11.8 74.7 143 07/14/21 DLC <br /> Benzene-BSD SW8260D 114 3 10.0 11.4 74.7 143 20.5 07/14/21 DLC <br /> Trichloroethene-BS SW8260D 130 10.0 13.0 74.4 141 07/14/21 DLC <br /> Trichloroethene-BSD SW8260D 127 2 10.0 12.7 74.4 141 20.5 07/14/21 DLC <br /> 1,2-Dichloropro pane-BS SW8260D 119 10.0 11.9 50 150 07/14/21 DLC <br /> 1,2-Dichloropro pane-BSD SW8260D 118 1 10.0 11.8 50 150 25 07/14/21 DLC <br /> Dibromomethane-BS SW8260D 114 10.0 11.4 50 150 07/14/21 DLC <br /> Dibromomethane-BSD SW8260D 116 2 10.0 11.6 50 150 25 07/14/21 DLC <br /> Bromodichloromethane-BS SW8260D 121 10.0 12.1 50 150 07/14/21 DLC <br /> Bromodichloromethane-BSD SW8260D 121 0 10.0 12.1 50 150 25 07/14/21 DLC <br /> Page 21 <br /> ADDRESS 8620 Holly Drive,Suite 100, Everett,WA 98208 PHONE 425-356-2600 425-356-2626 <br /> ALS Group USA,Corp dba ALS Environmental <br /> www.aisgiobal.com <br /> RIGHT SU1-UTIOf15 � t I-F t t rlEF <br />