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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 /> Indeno(1,2,3-cd)pyrene-BS SW8270ESIM 93.4 5.00 4.67 20 150 01/19/21 JMK <br /> Indeno(1,2,3-cd)pyrene-BSD SW8270ESIM 98.3 5 5.00 4.91 20 150 30 01/19/21 JMK <br /> Dibenz(a,h)anth racene-BS SW8270ESIM 96.9 5.00 4.84 20 150 01/19/21 JMK <br /> Dibenz(a,h)anth racene-BSD SW8270ESIM 102 5 5.00 5.10 20 150 30 01/19/21 JMK <br /> Benzo(g,h,i)perylene-BS SW8270ESIM 87.0 5.00 4.35 43 140 01/19/21 JMK <br /> Benzo(g,h,i)perylene-BSD SW8270ESIM 88.2 1 5.00 4.41 43 140 21 01/19/21 JMK <br /> SPIKE LIMITS ANALYSIS ANALYSIS BY <br /> SURROGATE METHOD %REC RPD QUAL ADDED RESULT MIN MAX RPD DATE <br /> Terphenyl-d14-BS SW8270ESIM 91.4 2.50 2.28 50 147 01/19/21 JMK <br /> Terphenyl-d14-BSD SW8270ESIM 96.1 2.50 2.40 50 147 01/19/21 JMK <br /> ALS Test Batch ID: 161711 -Water by E200.8 Prepared 01/14/21 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 94.6 125 118 89.1 110 01/18/21 EBS <br /> Arsenic-BSD E200.8 94.1 1 125 118 89.1 110 10 01/18/21 EBS <br /> Chromium-BS E200.8 97.9 125 122 88.3 110.2 01/18/21 EBS <br /> Chromium-BSD E200.8 97.4 1 125 122 88.3 110.2 10 01/18/21 EBS <br /> Lead-BS E200.8 96.9 125 121 87.5 107 01/18/21 EBS <br /> Lead-BSD E200.8 98.1 1 125 123 87.5 107 10 01/18/21 EBS <br /> ALS Test Batch ID: 161713 -Water by E200.8 Prepared 01/14/21 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 94.6 125 118 89.1 110 01/18/21 EBS <br /> Arsenic(Dissolved)-BSD E200.8 94.1 1 125 118 89.1 110 10 01/18/21 EBS <br /> Chromium(Dissolved)-BS E200.8 97.9 125 122 86.2 107 01/18/21 EBS <br /> Chromium(Dissolved)-BSD E200.8 97.4 1 125 122 86.2 107 2.97 01/18/21 EBS <br /> Lead(Dissolved)-BS E200.8 96.9 125 121 87.5 107 01/18/21 EBS <br /> Lead(Dissolved)-BSD E200.8 98.1 1 125 123 87.5 107 2.43 01/18/21 EBS <br /> APPROVED BY <br /> Laboratory Director <br /> Page 28 <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 -11-. I� i_�� <br />