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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 /> SURROGATE METHOD %REC RPD QUAL ADDED RESULT MIN MAX RPD DATE <br /> 1,2-Dichloroethane-d4-BS SW8260D 98.9 5.00 4.95 71 130 07/14/21 DLC <br /> 1,2-Dichloroethane-d4-BSD SW8260D 98.3 5.00 4.91 71 130 07/14/21 DLC <br /> Toluene-D8-BS SW8260D 99.3 5.00 4.96 80 120 07/14/21 DLC <br /> Toluene-D8-BSD SW8260D 96.8 5.00 4.84 80 120 07/14/21 DLC <br /> p-Bromofluorobenzene-BS SW8260D 101 5.00 5.06 78 120 07/14/21 DLC <br /> p-Bromofluorobenzene-BSD SW8260D 107 5.00 5.35 78 120 07/14/21 DLC <br /> SQ1 - Spike outside of control limits with a high bias.Associated compounds non-detect. No corrective action taken. <br /> ALS Test Batch ID: 168034-Water by SW8270ESIM 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 /> Naphthalene-BS SW8270ESIM 84.3 5.00 4.22 36 118 07/15/21 JMK <br /> Naphthalene-BSD SW8270ESIM 91.4 8 5.00 4.57 36 118 27 07/15/21 JMK <br /> 2-Methylnaphthalene-BS SW8270ESIM 86.0 5.00 4.30 20 150 07/15/21 JMK <br /> 2-Methylnaphthalene-BSD SW8270ESIM 90.1 5 5.00 4.50 20 150 30 07/15/21 JMK <br /> 1-Methylnaphthalene-BS SW8270ESIM 94.3 5.00 4.72 20 150 07/15/21 JMK <br /> 1-Methylnaphthalene-BSD SW8270ESIM 96.5 2 5.00 4.83 20 150 30 07/15/21 JMK <br /> Acenaphthylene-BS SW8270ESIM 96.9 5.00 4.85 20 150 07/15/21 JMK <br /> Acenaphthylene-BSD SW8270ESIM 101 4 5.00 5.03 20 150 30 07/15/21 JMK <br /> Acenaphthene-BS SW8270ESIM 83.5 5.00 4.18 37 125 07/15/21 JMK <br /> Acenaphthene-BSD SW8270ESIM 87.3 4 5.00 4.36 37 125 29 07/15/21 JMK <br /> Fluorene-BS SW8270ESIM 89.5 5.00 4.48 20 150 07/15/21 JMK <br /> Fluorene-BSD SW8270ESIM 92.4 3 5.00 4.62 20 150 30 07/15/21 JMK <br /> Phenanthrene-BS SW8270ESIM 86.2 5.00 4.31 20 150 07/15/21 JMK <br /> Phenanthrene-BSD SW8270ESIM 89.4 4 5.00 4.47 20 150 30 07/15/21 JMK <br /> Anthracene-BS SW8270ESIM 98.8 5.00 4.94 20 150 07/15/21 JMK <br /> Anthracene-BSD SW8270ESIM 102 3 5.00 5.08 20 150 30 07/15/21 JMK <br /> Fluoranthene-BS SW8270ESIM 88.8 5.00 4.44 20 150 07/15/21 JMK <br /> Fluoranthene-BSD SW8270ESIM 90.9 2 5.00 4.54 20 150 30 07/15/21 JMK <br /> Pyrene-BS SW8270ESIM 102 5.00 5.10 59 156 07/15/21 JMK <br /> Pyrene-BSD SW8270ESIM 104 2 5.00 5.21 59 156 22 07/15/21 JMK <br /> Benzo(a)anthracene-BS SW8270ESIM 97.6 5.00 4.88 20 150 07/15/21 JMK <br /> Benzo(a)anthracene-BSD SW8270ESIM 99.0 1 5.00 4.95 20 150 30 07/15/21 JMK <br /> Chrysene-BS SW8270ESIM 96.7 5.00 4.84 20 150 07/15/21 JMK <br /> Chrysene-BSD SW8270ESIM 99.2 3 5.00 4.96 20 150 30 07/15/21 JMK <br /> Benzo(b)fluoranthene-BS SW8270ESIM 91.8 5.00 4.59 20 150 07/15/21 JMK <br /> Benzo(b)fluoranthene-BSD SW8270ESIM 93.1 1 5.00 4.66 20 150 30 07/15/21 JMK <br /> Benzo(k)fluoranthene-BS SW8270ESIM 100 5.00 5.00 20 150 07/15/21 JMK <br /> Benzo(k)fluoranthene-BSD SW8270ESIM 101 1 5.00 5.05 20 150 30 07/15/21 JMK <br /> Benzo(a)pyrene-BS SW8270ESIM 100 5.00 5.01 20 150 07/15/21 JMK <br /> Page 24 <br /> ADDRESS 8620 Holly Drive,Suite 100, Everett,WA 98208 PHONE 425-356-2600 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 />