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ALS Enuironmenta1 <br /> CERTIFICATE OF ANALYSIS <br /> CLIENT: GeoEngineers, Inc. DATE: 7/23/2020 <br /> 1101 Fawcett Ave. S., Suite 200 ALS SDG#: EV20070042 <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 92.7 6 5.00 4.63 20 150 30 07/23/20 JMK <br /> Dibenzo(a,h)anth racene-BS SW8270DSIM 107 5.00 5.35 20 150 07/23/20 JMK <br /> Dibenzo(a,h)anth racene-BSD SW8270DSIM 101 6 5.00 5.03 20 150 30 07/23/20 JMK <br /> Benzo(ghi)perylene-BS SW8270DSIM 81.1 5.00 4.05 43 140 07/23/20 JMK <br /> Benzo(ghi)perylene-BSD SW8270DSIM 76.0 6 5.00 3.80 43 140 21 07/23/20 JMK <br /> SPIKE LIMITS ANALYSIS ANALYSIS BY <br /> SURROGATE METHOD %REC RPD QUAL ADDED RESULT MIN MAX RPD DATE <br /> Terphenyl-d14-BS SW8270DSIM 100 2.50 2.51 50 147 07/23/20 JMK <br /> Terphenyl-d14-BSD SW8270DSIM 99.2 2.50 2.48 50 147 07/23/20 JMK <br /> ALS Test Batch ID: 155437 -Water by E200.8 Prepared 07/15/20 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 96.4 125 120 89.1 110 07/15/20 RAL <br /> Arsenic-BSD E200.8 96.8 0 125 121 89.1 110 10 07/15/20 RAL <br /> Chromium-BS E200.8 102 125 127 88.3 110.2 07/15/20 RAL <br /> Chromium-BSD E200.8 103 2 125 129 88.3 110.2 10 07/15/20 RAL <br /> Lead-BS E200.8 102 125 128 87.5 107 07/15/20 RAL <br /> Lead-BSD E200.8 102 1 125 127 87.5 107 10 07/15/20 RAL <br /> ALS Test Batch ID: 155439 -Water by E200.8 Prepared 07/15/20 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 96.4 125 120 89.1 110 07/15/20 RAL <br /> Arsenic(Dissolved)-BSD E200.8 96.8 0 125 121 89.1 110 10 07/15/20 RAL <br /> Chromium(Dissolved)-BS E200.8 102 125 127 86.2 107 07/15/20 RAL <br /> Chromium(Dissolved)-BSD E200.8 103 2 125 129 86.2 107 2.97 07/15/20 RAL <br /> Lead(Dissolved)-BS E200.8 102 125 128 87.5 107 07/15/20 RAL <br /> Lead(Dissolved)-BSD E200.8 102 1 125 127 87.5 107 2.43 07/15/20 RAL <br /> APPROVED BY <br /> / <br /> Technical Manager <br /> Page 23 <br /> ADDRESS 8620 Holly Drive, Suite 100, Everett,WA 98208 1 PHONE 425-356-2600 425-356-2626 <br /> ALS Group USA,Corp dba ALS Environmental <br /> www.aisgiobal.com <br /> RIGHT SO1-UTI43f15 -I-I. I-I�1 1-1 <br />