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ALS Enuironme ntal <br /> CERTIFICATE OF ANALYSIS <br /> CLIENT: GeoEngineers, Inc. DATE: 10/19/2020 <br /> 1101 Fawcett Ave. S., Suite 200 ALS SDG#: EV20100044 <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 /> Indeno(1,2,3-cd)pyrene-BSD SW8270DSIM 79.6 5 5.00 3.98 20 150 30 10/16/20 JMK <br /> Dibenzo(a,h)anthracene-BS SW8270DSIM 84.1 5.00 4.21 20 150 10/16/20 JMK <br /> Dibenzo(a,h)anthracene-BSD SW8270DSIM 79.7 5 5.00 3.99 20 150 30 10/16/20 JMK <br /> Benzo(ghi)perylene-BS SW8270DSIM 80.9 5.00 4.05 43 140 10/16/20 JMK <br /> Benzo(ghi)perylene-BSD SW8270DSIM 77.4 4 5.00 3.87 43 140 21 10/16/20 JMK <br /> SPIKE LIMITS ANALYSIS ANALYSIS BY <br /> SURROGATE METHOD %REC RPD QUAL ADDED RESULT MIN MAX RPD DATE <br /> Terphenyl-d14-BS SW8270DSIM 80.6 20.0 16.1 50 147 10/16/20 JMK <br /> Terphenyl-d14-BSD SW8270DSIM 75.8 20.0 15.2 50 147 10/16/20 JMK <br /> ALS Test Batch ID: 158269-Water by E200.8 Prepared 10/08/20 00:00 <br /> SPIKE LIMITS ANALYSIS ANALYSIS BY <br /> SPIKED COMPOUND METHOD %REC RPD QUAL ADDED RESULT MIN MAX RPD DATE <br /> Arsenic-BS E200.8 92.4 125 115 89.1 110 10/09/20 RAL <br /> Arsenic-BSD E200.8 94.1 2 125 118 89.1 110 10 10/09/20 RAL <br /> Chromium-BS E200.8 95.8 125 120 88.3 110.2 10/09/20 RAL <br /> Chromium-BSD E200.8 97.4 2 125 122 88.3 110.2 10 10/09/20 RAL <br /> Lead-BS E200.8 95.5 125 119 87.5 107 10/09/20 RAL <br /> Lead-BSD E200.8 96.9 1 125 121 87.5 107 10 10/09/20 RAL <br /> ALS Test Batch ID: 158320-Water by E200.8 Prepared 10/08/20 00:00 <br /> SPIKE LIMITS ANALYSIS ANALYSIS BY <br /> SPIKED COMPOUND METHOD %REC RPD QUAL ADDED RESULT MIN MAX RPD DATE <br /> Arsenic(Dissolved)-BS E200.8 92.4 125 115 89.1 110 10/09/20 RAL <br /> Arsenic(Dissolved)-BSD E200.8 94.1 2 125 118 89.1 110 10 10/09/20 RAL <br /> Chromium(Dissolved)-BS E200.8 95.8 125 120 86.2 107 10/09/20 RAL <br /> Chromium(Dissolved)-BSD E200.8 97.4 2 125 122 86.2 107 2.97 10/09/20 RAL <br /> Lead(Dissolved)-BS E200.8 95.5 125 119 87.5 107 10/09/20 RAL <br /> Lead(Dissolved)-BSD E200.8 96.9 1 125 121 87.5 107 2.43 10/09/20 RAL <br /> APPROVED BY <br /> Laboratory Manager <br /> Page 22 <br /> ADDRESS 8620 Holly Drive,Suite 100, Everett,WA 98208 1 PHONE 425-356-2600 1 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 />