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ALS Enuironme ntal CERTIFICATE OF ANALYSIS CLIENT: GeoEngineers, Inc. DATE: 4/14/2021 1101 Fawcett Ave. S., Suite 200 ALS SDG#: EV21040032 Tacoma, WA 98402 WDOE ACCREDITATION: C601 CLIENT CONTACT: Jacob Letts CLIENT PROJECT: Smith St. Mill F- LABORATORY BLANK RESULTS MBG-041321W- Batch 164534-Water by NWTPH-GX Prepared 04/13/21 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 04/13/21 KLS SPIKE CONTROL LIMITS ANALYSIS ANALYSIS SURROGATE METHOD %REC QUAL ADDED RESULT MIN MAX DATE BY TFT NWTPH-GX 96.8 10.0 9.68 60 140 04/13/21 KLS U-Analyte analyzed for but not detected at level above reporting limit. MB-040821W- Batch 164408 -Water by NWTPH-DX Prepared 04/08/21 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 04/08/21 JNF Total Petroleum Hydrocarbon-Oil NWTPH-DX ND U UG/L 250 36 110 04/08/21 JNF SPIKE CONTROL LIMITS ANALYSIS ANALYSIS SURROGATE METHOD %REC QUAL ADDED RESULT MIN MAX DATE BY Pentacosane NWTPH-DX 109 100 109 60 1 126 04/08/21 JNF U-Analyte analyzed for but not detected at level above reporting limit. MB-040821W- Batch 164422 -Water by SW8260D Prepared 04/08/21 00:00 LIMITS ANALYSIS ANALYSIS ANALYTE METHOD RESULTS QUAL UNITS RL MDL PQL DATE BY Dichlorodifluoromethane(CFC-12) SW8260D ND U UG/L 2.0 0.13 0.38 04/08/21 DLC Chloromethane(Methyl Chloride) SW8260D ND U UG/L 2.0 0.068 0.20 04/08/21 DLC Vinyl chloride SW8260D ND U UG/L 0.20 0.0036 0.011 04/08/21 DLC Bromomethane(Methyl Bromide) SW8260D ND U UG/L 2.0 0.082 0.24 04/08/21 DLC Chloroethane SW8260D ND U UG/L 2.0 0.073 0.22 04/08/21 DLC Carbon tetrachloride SW8260D ND U UG/L 2.0 0.020 0.058 04/08/21 DLC Trichlorofluoromethane(CFC-11) SW8260D ND U UG/L 2.0 0.13 0.39 04/08/21 DLC Carbon disulfide SW8260D ND U UG/L 2.0 0.10 0.31 04/08/21 DLC Acetone SW8260D ND U UG/L 25 0.22 0.66 04/08/21 DLC 1,1-Dichloroethene SW8260D ND U UG/L 2.0 0.0053 0.016 04/08/21 DLC Methylene chloride SW8260D ND U UG/L 5.0 0.34 1.0 04/08/21 DLC Acrylonitrile SW8260D ND U UG/L 10 0.096 0.29 04/08/21 DLC Methyl tert butyl ether(MTBE) SW8260D ND U UG/L 2.0 0.049 0.15 04/08/21 DLC trans-1,2-Dichloroethene SW8260D ND U UG/L 2.0 0.078 0.24 04/08/21 DLC 1,1-Dichloroethane SW8260D ND U UG/L 2.0 0.068 0.21 04/08/21 DLC 2-Butanone(Methyl ethyl ketone)(MEK) SW8260D ND U UG/L 10 0.23 0.68 04/08/21 DLC cis-1,2-Dichloroethene SW8260D ND U UG/L 2.0 0.076 0.23 04/08/21 DLC 2,2-Dichloropro pane SW8260D ND U UG/L 2.0 0.16 0.47 04/08/21 DLC Page 16 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