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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 /> ALS Test Batch ID: 161673 -Water by NWTPH-GX Prepared 01/15/21 00:00 <br /> SPIKE LIMITS ANALYSIS ANALYSIS BY <br /> SPIKED COMPOUND METHOD %REC RPD QUAL ADDED RESULT MIN MAX RPD DATE <br /> Gasoline-BS NWTPH-GX 92.8 500 464 66.5 122.7 01/16/21 KLS <br /> Gasoline-BSD NWTPH-GX 93.6 1 500 468 66.5 122.7 12 01/16/21 KLS <br /> SPIKE LIMITS ANALYSIS ANALYSIS BY <br /> SURROGATE METHOD %REC RPD QUAL ADDED RESULT MIN MAX RPD DATE <br /> TFT-BS NWTPH-GX 96.6 10.0 9.66 60 140 01/16/21 KLS <br /> TFT-BSD NWTPH-GX 90.9 10.0 9.09 60 140 01/16/21 KLS <br /> ALS Test Batch ID: 161659 -Water by NWTPH-DX Prepared 01/13/21 00:00 <br /> SPIKE LIMITS ANALYSIS ANALYSIS BY <br /> SPIKED COMPOUND METHOD %REC RPD QUAL ADDED RESULT MIN MAX RPD DATE <br /> Total Petroleum Hydrocarbon-Diesel- NWTPH-DX 91.7 1250 1150 67 125.2 01/17/21 JNF <br /> BS <br /> Total Petroleum Hydrocarbon-Diesel- NWTPH-DX 94.4 3 1250 1180 67 125.2 15.2 01/17/21 JNF <br /> BSD <br /> SPIKE LIMITS ANALYSIS ANALYSIS BY <br /> SURROGATE METHOD %REC RPD QUAL ADDED RESULT MIN MAX RPD DATE <br /> Pentacosane-BS NWTPH-DX 83.6 100 83.6 60 126 01/17/21 JNF <br /> Pentacosane-BSD NWTPH-DX 92.8 100 92.8 60 126 01/17/21 JNF <br /> ALS Test Batch ID: 161611 -Water by SW8260D 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 /> Dichlorodifluoromethane(CFC-12)-BS SW8260D 115 10.0 11.5 50 150 01/14/21 DLC <br /> Dichlorodifluoromethane(CFC-12)-BSD SW8260D 107 7 10.0 10.7 50 150 25 01/14/21 DLC <br /> Chloromethane(Methyl Chloride)-BS SW8260D 91.5 10.0 9.15 50 150 01/14/21 DLC <br /> Chloromethane(Methyl Chloride)-BSD SW8260D 87.5 4 10.0 8.75 50 150 25 01/14/21 DLC <br /> Vinyl chloride-BS SW8260D 104 10.0 10.4 50 150 01/14/21 DLC <br /> Vinyl chloride-BSD SW8260D 96.7 7 10.0 9.67 50 150 25 01/14/21 DLC <br /> Bromomethane(Methyl Bromide)-BS SW8260D 78.0 10.0 7.80 50 150 01/14/21 DLC <br /> Bromomethane(Methyl Bromide)-BSD SW8260D 80.1 3 10.0 8.01 50 150 25 01/14/21 DLC <br /> Chloroethane-BS SW8260D 101 10.0 10.1 50 150 01/14/21 DLC <br /> Chloroethane-BSD SW8260D 94.6 7 10.0 9.46 50 150 25 01/14/21 DLC <br /> Carbon tetrachloride-BS SW8260D 115 10.0 11.5 50 150 01/14/21 DLC <br /> Carbon tetrachloride-BSD SW8260D 108 7 10.0 10.8 50 150 25 01/14/21 DLC <br /> Trichlorofluoromethane(CFC-11)-BS SW8260D 131 10.0 13.1 50 150 01/14/21 DLC <br /> Trichlorofluoromethane(CFC-11)-BSD SW8260D 123 7 10.0 12.3 50 150 25 01/14/21 DLC <br /> Carbon disulfide-BS SW8260D 106 10.0 10.6 50 150 01/14/21 DLC <br /> Carbon disulfide-BSD SW8260D 99.8 6 10.0 9.98 50 150 25 01/14/21 DLC <br /> Acetone-BS SW8260D 103 10.0 10.3 50 150 01/14/21 DLC <br /> Page 23 <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 -1-i. 1-1.1 1 1-11 <br />