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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 MB-040821W- Batch 164422 -Water by SW8260D Prepared 04/08/21 00:00 1,4-Dichlorobenzene SW8260D ND U UG/L 2.0 0.13 0.39 04/08/21 DLC n-Butylbenzene SW8260D ND U UG/L 2.0 0.16 0.48 04/08/21 DLC 1,2-Dichlorobenzene SW8260D ND U UG/L 2.0 0.12 0.37 04/08/21 DLC 1,2-Dibromo-3-chloropropane(DBCP) SW8260D ND U UG/L 10 0.0085 0.027 04/08/21 DLC 1,2,4-Trichlorobenzene SW8260D ND U UG/L 2.0 0.13 0.38 04/08/21 DLC Hexachlorobutadiene SW8260D ND U UG/L 2.0 0.17 0.50 04/08/21 DLC Naphthalene SW8260D ND U UG/L 2.0 0.12 0.36 04/08/21 DLC 1,2,3-Trichlorobenzene SW8260D ND U UG/L 2.0 0.13 0.38 04/08/21 DLC SPIKE CONTROL LIMITS ANALYSIS ANALYSIS SURROGATE METHOD %REC QUAL ADDED RESULT MIN MAX DATE BY 1,2-Dichloroethane-d4 SW8260D 105 20.0 21.0 71 1 130 04/08/21 DLC Toluene-D8 SW8260D 90.4 20.0 18.1 80 1 120 04/08/21 DLC p-Bromofluorobenzene SW8260D 101 20.0 20.3 78 1 120 04/08/21 DLC U-Analyte analyzed for but not detected at level above reporting limit. MB-040821W- Batch 164396-Water by SW8270ESIM Prepared 04/08/21 00:00 LIMITS ANALYSIS ANALYSIS ANALYTE METHOD RESULTS QUAL UNITS RL MDL PQL DATE BY Naphthalene SW8270ESIM ND U UG/L 0.020 0.00078 0.0024 04/08/21 JMK 2-Methylnaphthalene SW8270ESIM ND U UG/L 0.020 0.0017 0.0052 04/08/21 JMK 1-Methylnaphthalene SW8270ESIM ND U UG/L 0.020 0.0010 0.0030 04/08/21 JMK Acenaphthylene SW8270ESIM ND U UG/L 0.020 0.0025 0.0074 04/08/21 JMK Acenaphthene SW8270ESIM ND U UG/L 0.020 0.0036 0.011 04/08/21 JMK Fluorene SW8270ESIM ND U UG/L 0.020 0.0011 0.0033 04/08/21 JMK Phenanthrene SW8270ESIM ND U UG/L 0.020 0.0021 0.0063 04/08/21 JMK Anthracene SW8270ESIM ND U UG/L 0.020 0.0027 0.0082 04/08/21 JMK Fluoranthene SW8270ESIM ND U UG/L 0.020 0.00061 0.0018 04/08/21 JMK Pyrene SW8270ESIM ND U UG/L 0.020 0.0013 0.0038 04/08/21 JMK Benzo(a)anthracene SW8270ESIM ND U UG/L 0.020 0.0010 0.0031 04/08/21 JMK Chrysene SW8270ESIM ND U UG/L 0.020 0.0021 0.0062 04/08/21 JMK Benzo(b)fluoranthene SW8270ESIM ND U UG/L 0.020 0.0030 0.0091 04/08/21 JMK Benzo(k)fluoranthene SW8270ESIM ND U UG/L 0.020 0.0049 0.015 04/08/21 JMK Benzo(a)pyrene SW8270ESIM ND U UG/L 0.020 0.0023 0.0069 04/08/21 JMK Indeno(1,2,3-cd)pyrene SW8270ESIM ND U UG/L 0.020 0.0018 0.0055 04/08/21 JMK Dibenz(a,h)anth racene SW8270ESIM ND U UG/L 0.020 0.0036 0.011 04/08/21 JMK Benzo(g,h,i)perylene SW8270ESIM ND U UG/L 0.020 0.0020 0.0060 04/08/21 JMK SPIKE CONTROL LIMITS ANALYSIS ANALYSIS SURROGATE METHOD %REC QUAL ADDED RESULT MIN MAX DATE BY Terphenyl-d14 SW8270ESIM 116 2.50 2.90 50 1 147 04/08/21 JMK Page 18 ADDRESS 8620 Holly Drive,Suite 100, Everett,WA 98208 1 PHONE 425-356-2600 1 FAX 425-356-2626 ALS Group USA,Corp dba ALS Environmental www.aisgiobal.com RIGHT SU1-UTIOf15 -(moi.1 I•nrf t rlEF