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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 /> Benzo(a)pyrene-BSD SW8270ESIM 102 2 5.00 5.10 20 150 30 07/15/21 JMK <br /> Indeno(1,2,3-cd)pyrene-BS SW8270ESIM 86.8 5.00 4.34 20 150 07/15/21 JMK <br /> Indeno(1,2,3-cd)pyrene-BSD SW8270ESIM 89.9 4 5.00 4.49 20 150 30 07/15/21 JMK <br /> Dibenz(a,h)anth racene-BS SW8270ESIM 78.2 5.00 3.91 20 150 07/15/21 JMK <br /> Dibenz(a,h)anth racene-BSD SW8270ESIM 81.4 4 5.00 4.07 20 150 30 07/15/21 JMK <br /> Benzo(g,h,i)perylene-BS SW8270ESIM 86.8 5.00 4.34 43 140 07/15/21 JMK <br /> Benzo(g,h,i)perylene-BSD SW8270ESIM 89.4 3 5.00 4.47 43 140 21 07/15/21 JMK <br /> SPIKE LIMITS ANALYSIS ANALYSIS BY <br /> SURROGATE METHOD %REC RPD QUAL ADDED RESULT MIN MAX RPD DATE <br /> Terphenyl-d14-BS SW8270ESIM 111 2.50 2.78 50 147 07/15/21 JMK <br /> Terphenyl-d14-BSD SW8270ESIM 114 2.50 2.85 50 147 07/15/21 JMK <br /> ALS Test Batch ID: 167956-Water by E200.8 Prepared 07/14/21 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 97.3 125 122 89.1 110 07/14/21 EBS <br /> Arsenic-BSD E200.8 97.9 1 125 122 89.1 110 10 07/14/21 EBS <br /> Chromium-BS E200.8 103 125 129 88.3 110.2 07/14/21 EBS <br /> Chromium-BSD E200.8 101 2 125 126 88.3 110.2 10 07/14/21 EBS <br /> Lead-BS E200.8 99.9 125 125 87.5 107 07/14/21 EBS <br /> Lead-BSD E200.8 100 1 125 126 87.5 107 10 07/14/21 EBS <br /> ALS Test Batch ID: 167958-Water by E200.8 Prepared 07/14/21 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 97.3 125 122 89.1 110 07/14/21 EBS <br /> Arsenic(Dissolved)-BSD E200.8 97.9 1 125 122 89.1 110 10 07/14/21 EBS <br /> Chromium(Dissolved)-BS E200.8 103 125 129 86.2 107 07/14/21 EBS <br /> Chromium(Dissolved)-BSD E200.8 101 2 125 126 86.2 107 2.97 07/14/21 EBS <br /> Lead(Dissolved)-BS E200.8 99.9 125 125 87.5 107 07/14/21 EBS <br /> Lead(Dissolved)-BSD E200.8 100 1 125 126 87.5 107 2.43 07/14/21 EBS <br /> APPROVED BY <br /> Professional Scientist <br /> Page 25 <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 />