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ALS Enuironme ntal CERTIFICATE OF ANALYSIS CLIENT: GeoEngineers, Inc. DATE: 10/19/2020 1101 Fawcett Ave. S., Suite 200 ALS SDG#: EV20100044 Tacoma, WA 98402 WDOE ACCREDITATION: C601 CLIENT CONTACT: Jacob Letts CLIENT PROJECT: Smith St. Mill F- LABORATORY BLANK RESULTS MBG-101220W- Batch 158402 -Water by NWTPH-GX Prepared 10/12/20 00:00 LIMITS ANALYSIS ANALYSIS ANALYTE METHOD RESULTS QUAL UNITS RL MDL PQL DATE BY Gasoline NWTPH-GX ND U UG/L 50 9.8 29 10/12/20 KLS SPIKE CONTROL LIMITS ANALYSIS ANALYSIS SURROGATE METHOD %REC QUAL ADDED RESULT MIN MAX DATE BY TFT NWTPH-GX 95.0 10.0 9.50 60 140 10/12/20 KLS U-Analyte analyzed for but not detected at level above reporting limit. MB-100820W- Batch 158324-Water by NWTPH-DX Prepared 10/08/20 00:00 LIMITS ANALYSIS ANALYSIS ANALYTE METHOD RESULTS QUAL UNITS RL MDL PQL DATE BY Total Petroleum Hydrocarbon-Diesel NWTPH-DX ND U UG/L 130 40 120 10/09/20 EBS Total Petroleum Hydrocarbon-Oil NWTPH-DX ND U UG/L 250 36 110 10/09/20 EBS SPIKE CONTROL LIMITS ANALYSIS ANALYSIS SURROGATE METHOD %REC QUAL ADDED RESULT MIN MAX DATE BY Pentacosane NWTPH-DX 85.8 100 85.8 60 1 126 10/09/20 EBS U-Analyte analyzed for but not detected at level above reporting limit. MB-101220W- Batch 158552 -Water by SW8260C Prepared 10/12/20 00:00 LIMITS ANALYSIS ANALYSIS ANALYTE METHOD RESULTS QUAL UNITS RL MDL PQL DATE BY CFC-12 SW8260C ND U UG/L 2.0 0.13 0.38 10/12/20 DLC Chloromethane SW8260C ND U UG/L 2.0 0.068 0.20 10/12/20 DLC Vinyl Chloride SW8260C ND U UG/L 0.20 0.0036 0.011 10/12/20 DLC Bromomethane SW8260C ND U UG/L 2.0 0.082 0.24 10/12/20 DLC Chloroethane SW8260C ND U UG/L 2.0 0.073 0.22 10/12/20 DLC Carbon Tetrachloride SW8260C ND U UG/L 2.0 0.020 0.058 10/12/20 DLC CFC-11 SW8260C ND U UG/L 2.0 0.13 0.39 10/12/20 DLC Carbon Disulfide SW8260C ND U UG/L 2.0 0.10 0.31 10/12/20 DLC Acetone SW8260C ND U UG/L 25 0.22 0.66 10/12/20 DLC 1,1-Dichloroethene SW8260C ND U UG/L 2.0 0.0053 0.016 10/12/20 DLC Methylene Chloride SW8260C ND U UG/L 5.0 0.34 1.0 10/12/20 DLC Acrylonitrile SW8260C ND U UG/L 10 0.096 0.29 10/12/20 DLC Methyl t-butyl ether SW8260C ND U UG/L 2.0 0.049 0.15 10/12/20 DLC Trans-1,2-Dichloroethene SW8260C ND U UG/L 2.0 0.078 0.24 10/12/20 DLC 1,1-Dichloroethane SW8260C ND U UG/L 2.0 0.068 0.21 10/12/20 DLC 2-Butanone SW8260C ND U UG/L 10 0.23 0.68 10/12/20 DLC Cis-1,2-Dichloroethene SW8260C ND U UG/L 2.0 0.076 0.23 10/12/20 DLC 2,2-Dichloropro pane SW8260C ND U UG/L 2.0 0.16 0.47 10/12/20 DLC Page 13 ADDRESS 8620 Holly Drive,Suite 100, Everett,WA 98208 1 PHONE 425-356-2600 FAX 425-356-2626 ALS Group USA,Corp dba ALS Environmental www.aisgiobal.com RIGHT SU1-UTIOf15 � t I-ft t rlEF