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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 /> 1,2,3-Trichloropropane-BS SW8260D 111 10.0 11.1 50 150 07/14/21 DLC <br /> 1,2,3-Trichloropropane-BSD SW8260D 120 7 10.0 12.0 50 150 25 07/14/21 DLC <br /> Bromobenzene-BS SW8260D 108 10.0 10.8 50 150 07/14/21 DLC <br /> Bromobenzene-BSD SW8260D 115 7 10.0 11.5 50 150 25 07/14/21 DLC <br /> n-Propylbenzene-BS SW8260D 115 10.0 11.5 50 150 07/14/21 DLC <br /> n-Propylbenzene-BSD SW8260D 122 6 10.0 12.2 50 150 25 07/14/21 DLC <br /> 2-Chlorotoluene-BS SW8260D 112 10.0 11.2 50 150 07/14/21 DLC <br /> 2-Chlorotoluene-BSD SW8260D 119 6 10.0 11.9 50 150 25 07/14/21 DLC <br /> 1,3,5-Trimethylbenzene-BS SW8260D 112 10.0 11.2 50 150 07/14/21 DLC <br /> 1,3,5-Trimethylbenzene-BSD SW8260D 118 6 10.0 11.8 50 150 25 07/14/21 DLC <br /> 4-Chlorotoluene-BS SW8260D 112 10.0 11.2 50 150 07/14/21 DLC <br /> 4-Chlorotoluene-BSD SW8260D 119 6 10.0 11.9 50 150 25 07/14/21 DLC <br /> tert-Butyl benzene-BS SW8260D 120 10.0 12.0 50 150 07/14/21 DLC <br /> tert-Butyl benzene-BSD SW8260D 126 5 10.0 12.6 50 150 25 07/14/21 DLC <br /> 1,2,4-Trimethylbenzene-BS SW8260D 113 10.0 11.3 50 150 07/14/21 DLC <br /> 1,2,4-Trimethylbenzene-BSD SW8260D 118 4 10.0 11.8 50 150 25 07/14/21 DLC <br /> 2-Phenylbutane(sec-Butyl benzene)-BS SW8260D 117 10.0 11.7 50 150 07/14/21 DLC <br /> 2-Phenylbutane(sec-Butyl benzene)- SW8260D 121 4 10.0 12.1 50 150 25 07/14/21 DLC <br /> BSD <br /> Cymene(p-Isopropyltoluene)-BS SW8260D 116 10.0 11.6 50 150 07/14/21 DLC <br /> Cymene(p-Isopropyltoluene)-BSD SW8260D 120 3 10.0 12.0 50 150 25 07/14/21 DLC <br /> 1,3-Dichlorobenzene-BS SW8260D 112 10.0 11.2 50 150 07/14/21 DLC <br /> 1,3-Dichlorobenzene-BSD SW8260D 116 3 10.0 11.6 50 150 25 07/14/21 DLC <br /> 1,4-Dichlorobenzene-BS SW8260D 113 10.0 11.3 50 150 07/14/21 DLC <br /> 1,4-Dichlorobenzene-BSD SW8260D 116 3 10.0 11.6 50 150 25 07/14/21 DLC <br /> n-Butylbenzene-BS SW8260D 128 10.0 12.8 50 150 07/14/21 DLC <br /> n-Butylbenzene-BSD SW8260D 130 2 10.0 13.0 50 150 25 07/14/21 DLC <br /> 1,2-Dichlorobenzene-BS SW8260D 112 10.0 11.2 50 150 07/14/21 DLC <br /> 1,2-Dichlorobenzene-BSD SW8260D 115 3 10.0 11.5 50 150 25 07/14/21 DLC <br /> 12-Dibromo-3-chloropropane(DBCP)- SW8260D 104 10.0 10.4 50 150 07/14/21 DLC <br /> BS <br /> 1,2-Dibromo-3-chloropropane(DBCP)- SW8260D 108 4 10.0 10.8 50 150 25 07/14/21 DLC <br /> BSD <br /> 1,2,4-Trichlorobenzene-BS SW8260D 113 10.0 11.3 50 150 07/14/21 DLC <br /> 1,2,4-Trichlorobenzene-BSD SW8260D 115 2 10.0 11.5 50 150 25 07/14/21 DLC <br /> Hexachlorobutadiene-BS SW8260D 123 10.0 12.3 50 150 07/14/21 DLC <br /> Hexachlorobutadiene-BSD SW8260D 124 1 10.0 12.4 50 150 25 07/14/21 DLC <br /> Naphthalene-BS SW8260D 108 10.0 10.8 50 150 07/14/21 DLC <br /> Naphthalene-BSD SW8260D 111 2 10.0 11.1 50 150 25 07/14/21 DLC <br /> 1,2,3-Trichlorobenzene-BS SW8260D 112 10.0 11.2 50 150 07/14/21 DLC <br /> 1,2,3-Trichlorobenzene-BSD SW8260D 113 1 10.0 11.3 50 150 25 07/14/21 DLC <br /> Page 23 <br /> ADDRESS 8620 Holly Drive,Suite 100, Everett,WA 98208 1 PHONE 425-356-2600 FAX 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 />