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ALS Enuironme ntal <br /> CERTIFICATE OF ANALYSIS <br /> CLIENT: GeoEngineers, Inc. DATE: 10/19/2020 <br /> 1101 Fawcett Ave. S., Suite 200 ALS SDG#: EV20100044 <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: 158402-Water by NWTPH-GX Prepared 10/12/20 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 102 500 508 66.5 122.7 10/12/20 KLS <br /> Gasoline-BSD NWTPH-GX 112 9 500 558 66.5 122.7 12 10/12/20 KLS <br /> SPIKE LIMITS ANALYSIS ANALYSIS BY <br /> SURROGATE METHOD %REC RPD QUAL ADDED RESULT MIN MAX RPD DATE <br /> TFT-BS NWTPH-GX 115 10.0 11.5 60 140 10/12/20 KLS <br /> TFT-BSD NWTPH-GX 119 10.0 11.9 60 140 10/12/20 KLS <br /> ALS Test Batch ID: 158324-Water by NWTPH-DX Prepared 10/08/20 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 93.9 1250 1170 67 125.2 10/09/20 EBS <br /> BS <br /> Total Petroleum Hydrocarbon-Diesel- NWTPH-DX 98.3 5 1250 1230 67 125.2 15.2 10/09/20 EBS <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 85.7 100 85.7 60 126 10/09/20 EBS <br /> Pentacosane-BSD NWTPH-DX 88.7 100 88.7 60 126 10/09/20 EBS <br /> ALS Test Batch ID: 158552-Water by SW8260C Prepared 10/12/20 00:00 <br /> SPIKE LIMITS ANALYSIS ANALYSIS BY <br /> SPIKED COMPOUND METHOD %REC RPD QUAL ADDED RESULT MIN MAX RPD DATE <br /> CFC-12-BS SW8260C 125 10.0 12.5 50 150 10/12/20 DLC <br /> CFC-12-BSD SW8260C 117 6 10.0 11.7 50 150 25 10/12/20 DLC <br /> Chloromethane-BS SW8260C 109 10.0 10.9 50 150 10/12/20 DLC <br /> Chloromethane-BSD SW8260C 104 5 10.0 10.4 50 150 25 10/12/20 DLC <br /> Vinyl Chloride-BS SW8260C 98.2 10.0 9.82 50 150 10/12/20 DLC <br /> Vinyl Chloride-BSD SW8260C 92.2 6 10.0 9.22 50 150 25 10/12/20 DLC <br /> Bromomethane-BS SW8260C 102 10.0 10.2 50 150 10/12/20 DLC <br /> Bromomethane-BSD SW8260C 97.7 4 10.0 9.77 50 150 25 10/12/20 DLC <br /> Chloroethane-BS SW8260C 99.3 10.0 9.93 50 150 10/12/20 DLC <br /> Chloroethane-BSD SW8260C 94.0 5 10.0 9.40 50 150 25 10/12/20 DLC <br /> Carbon Tetrachloride-BS SW8260C 105 10.0 10.5 50 150 10/12/20 DLC <br /> Carbon Tetrachloride-BSD SW8260C 99.5 5 10.0 9.95 50 150 25 10/12/20 DLC <br /> CFC-11-BS SW8260C 110 10.0 11.0 50 150 10/12/20 DLC <br /> CFC-11-BSD SW8260C 103 6 10.0 10.3 50 150 25 10/12/20 DLC <br /> Carbon Disulfide-BS SW8260C 99.2 10.0 9.92 50 150 10/12/20 DLC <br /> Carbon Disulfide-BSD SW8260C 94.0 5 10.0 9.40 50 150 25 10/12/20 DLC <br /> Acetone-BS SW8260C 175 Sol 10.0 17.5 50 150 10/12/20 DLC <br /> Page 17 <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 SU1-UTIOf15 � t I•nr1 trlEF <br />