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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 /> 1,2,3-Trichloropropane-BS SW8260D 107 10.0 10.7 50 150 01/14/21 DLC <br /> 1,2,3-Trichloropropane-BSD SW8260D 104 2 10.0 10.4 50 150 25 01/14/21 DLC <br /> Bromobenzene-BS SW8260D 102 10.0 10.2 50 150 01/14/21 DLC <br /> Bromobenzene-BSD SW8260D 100 1 10.0 10.0 50 150 25 01/14/21 DLC <br /> n-Propylbenzene-BS SW8260D 104 10.0 10.4 50 150 01/14/21 DLC <br /> n-Propylbenzene-BSD SW8260D 101 2 10.0 10.1 50 150 25 01/14/21 DLC <br /> 2-Chlorotoluene-BS SW8260D 99.1 10.0 9.91 50 150 01/14/21 DLC <br /> 2-Chlorotoluene-BSD SW8260D 96.7 2 10.0 9.67 50 150 25 01/14/21 DLC <br /> 1,3,5-Tri methyl benzene-BS SW8260D 123 10.0 12.3 50 150 01/14/21 DLC <br /> 1,3,5-Tri methyl benzene-BSD SW8260D 121 1 10.0 12.1 50 150 25 01/14/21 DLC <br /> 4-Chlorotoluene-BS SW8260D 102 10.0 10.2 50 150 01/14/21 DLC <br /> 4-Chlorotoluene-BSD SW8260D 101 1 10.0 10.1 50 150 25 01/14/21 DLC <br /> tert-Butyl benzene-BS SW8260D 106 10.0 10.6 50 150 01/14/21 DLC <br /> tert-Butyl benzene-BSD SW8260D 103 3 10.0 10.3 50 150 25 01/14/21 DLC <br /> 1,2,4-Tri methyl benzene-BS SW8260D 110 10.0 11.0 50 150 01/14/21 DLC <br /> 1,2,4-Tri methyl benzene-BSD SW8260D 110 0 10.0 11.0 50 150 25 01/14/21 DLC <br /> 2-Phenylbutane(sec-Butyl benzene)-BS SW8260D 108 10.0 10.8 50 150 01/14/21 DLC <br /> 2-Phenylbutane(sec-Butylbenzene)- SW8260D 105 3 10.0 10.5 50 150 25 01/14/21 DLC <br /> BSD <br /> Cymene(p-Isopropyltoluene)-BS SW8260D 118 10.0 11.8 50 150 01/14/21 DLC <br /> Cymene(p-Isopropyltoluene)-BSD SW8260D 116 2 10.0 11.6 50 150 25 01/14/21 DLC <br /> 1,3-Dichlorobenzene-BS SW8260D 105 10.0 10.5 50 150 01/14/21 DLC <br /> 1,3-Dichlorobenzene-BSD SW8260D 105 0 10.0 10.5 50 150 25 01/14/21 DLC <br /> 1,4-Dichlorobenzene-BS SW8260D 107 10.0 10.7 50 150 01/14/21 DLC <br /> 1,4-Dichlorobenzene-BSD SW8260D 107 0 10.0 10.7 50 150 25 01/14/21 DLC <br /> n-Butylbenzene-BS SW8260D 105 10.0 10.5 50 150 01/14/21 DLC <br /> n-Butylbenzene-BSD SW8260D 107 2 10.0 10.7 50 150 25 01/14/21 DLC <br /> 1,2-Dichlorobenzene-BS SW8260D 107 10.0 10.7 50 150 01/14/21 DLC <br /> 1,2-Dichlorobenzene-BSD SW8260D 107 0 10.0 10.7 50 150 25 01/14/21 DLC <br /> 1,2-Dibromo-3-chloropropane(DBCP)- SW8260D 110 10.0 11.0 50 150 01/14/21 DLC <br /> BS <br /> 1,2-Dibromo-3-chloropropane(DBCP)- SW8260D 108 2 10.0 10.8 50 150 25 01/14/21 DLC <br /> BSD <br /> 1,2,4-Trichlorobenzene-BS SW8260D 105 10.0 10.5 50 150 01/14/21 DLC <br /> 1,2,4-Trichlorobenzene-BSD SW8260D 116 10 10.0 11.6 50 150 25 01/14/21 DLC <br /> Hexachlorobutadiene-BS SW8260D 121 10.0 12.1 50 150 01/14/21 DLC <br /> Hexachlorobutadiene-BSD SW8260D 118 3 10.0 11.8 50 150 25 01/14/21 DLC <br /> Naphthalene-BS SW8260D 102 10.0 10.2 50 150 01/14/21 DLC <br /> Naphthalene-BSD SW8260D 118 14 10.0 11.8 50 150 25 01/14/21 DLC <br /> 1,2,3-Trichlorobenzene-BS SW8260D 105 10.0 10.5 50 150 01/14/21 DLC <br /> 1,2,3-Trichlorobenzene-BSD SW8260D 115 10 10.0 11.5 50 150 25 01/14/21 DLC <br /> Page 26 <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 />