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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 /> ALS Test Batch ID: 155430 -Water by NWTPH-GX 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 /> Gasoline-BS NWTPH-GX 79.5 500 397 66.5 122.7 07/15/20 KLS <br /> Gasoline-BSD NWTPH-GX 83.5 5 500 418 66.5 122.7 12 07/15/20 KLS <br /> SPIKE LIMITS ANALYSIS ANALYSIS BY <br /> SURROGATE METHOD %REC RPD QUAL ADDED RESULT MIN MAX RPD DATE <br /> TFT-BS NWTPH-GX 118 10.0 11.8 60 140 07/15/20 KLS <br /> TFT-BSD NWTPH-GX 118 10.0 11.8 60 140 07/15/20 KLS <br /> ALS Test Batch ID: 155457 -Water by NWTPH-DX Prepared 07/13/20 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 86.8 1250 1090 67 125.2 07/14/20 EBS <br /> BS <br /> Total Petroleum Hydrocarbon-Diesel- NWTPH-DX 91.9 6 1250 1150 67 125.2 15.2 07/14/20 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 63.6 100 63.6 60 126 07/14/20 EBS <br /> Pentacosane-BSD NWTPH-DX 68.8 100 68.8 60 126 07/14/20 EBS <br /> ALS Test Batch ID: 155482 -Water by SW8260C Prepared 07/14/20 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 108 10.0 10.8 50 150 07/14/20 DLC <br /> CFC-12-BSD SW8260C 98.8 9 10.0 9.88 50 150 25 07/14/20 DLC <br /> Chloromethane-BS SW8260C 135 10.0 13.5 50 150 07/14/20 DLC <br /> Chloromethane-BSD SW8260C 123 10 10.0 12.3 50 150 25 07/14/20 DLC <br /> Vinyl Chloride-BS SW8260C 119 10.0 11.9 50 150 07/14/20 DLC <br /> Vinyl Chloride-BSD SW8260C 109 9 10.0 10.9 50 150 25 07/14/20 DLC <br /> Bromomethane-BS SW8260C 99.3 10.0 9.93 50 150 07/14/20 DLC <br /> Bromomethane-BSD SW8260C 95.2 4 10.0 9.52 50 150 25 07/14/20 DLC <br /> Chloroethane-BS SW8260C 121 10.0 12.1 50 150 07/14/20 DLC <br /> Chloroethane-BSD SW8260C 111 9 10.0 11.1 50 150 25 07/14/20 DLC <br /> Carbon Tetrachloride-BS SW8260C 99.5 10.0 9.95 50 150 07/14/20 DLC <br /> Carbon Tetrachloride-BSD SW8260C 91.8 8 10.0 9.18 50 150 25 07/14/20 DLC <br /> CFC-11-BS SW8260C 109 10.0 10.9 50 150 07/14/20 DLC <br /> CFC-11-BSD SW8260C 100 8 10.0 10.0 50 150 25 07/14/20 DLC <br /> Carbon Disulfide-BS SW8260C 116 10.0 11.6 50 150 07/14/20 DLC <br /> Carbon Disulfide-BSD SW8260C 107 8 10.0 10.7 50 150 25 07/14/20 DLC <br /> Acetone-BS SW8260C 214 SQ1 10.0 21.4 50 150 07/14/20 DLC <br /> Page 18 <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 />