3600 SMITH AVE 2025-08-19 - Laserfiche WebLink

Table 1 Summary of Groundwater Elevations and Chemical Analytical Results' Former Smith Street Sawmill Site Everett,Washington Petroleum Hydrocarbons Polycyclic Aromatic Hydrocarbons(PAHs)8 Carcinogenic PAHs(cPAHs)s'is Metals" (pg/L) (pg/L) (pg/L) (pg/L) Top of Approximate Total Monitoring Well Depth to t Arsenic Cadmium Chromium Lead Mercury Sample Sample Casing GroundwaterT VOCs cPAHs (Screened Interval Sampling Phase s Groundwater w Identification Date Elevation Elevation (pg/L) Dibenzo(a,h (TEQ) [feet below TOC]) (feet ItTOC)s Lube Oil Total Fluoranthe Benzo(ghl) Benzo(b)flu Benzo(k)flu Benzo(a)py(NAND 88) (NAND 88)° s s Anthracene Pyrene Senzo(a)an Chrysene Indeno(1,2, )anthraces (pg/L) Range Naphthalenes ne perylene thracene oranthene oranthene rene 3-cd)pyrene a Total Dissolved Total Total Dissolved Total Dissolved Total MW-1-180202 2/2/2018 22.00 38.8 -50 <130 -250 ND -0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 -0.020 <0.020 -0.020 -0.020 ND <1.0 - <1.0 <2.0 <1.0 - -0.20 MW-1-180501 5/1/2018 21.49 39.3 -50 -130 <250 ND <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 -0.020 -0.020 ND 1.4 - <1.0 2.4 - 1.8 - -0.20 Pre-Cleanup MW-1-180808 8/8/2018 23.03 37.8 -50 -130 <250 ND <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 -0.020 -0.020 NDI <1.0 - <1.0 2.8 <1.0 - -0.20 MW-112 11/14/2018 24.86 35.9 - - - - - - - - - - - - - - - - - - - - - - - MW-1 First Quarter Post- MW-1-070920 7/9/2020 60.79 23.46 37.3 <50 <130 <250 ND <0.020 <0.020 0.026 0.022 0.065 0.047 0.086 0.070 0.089 0.045 0.064 0.069 0.080 L4 <1.0 - 10 <1.0 1.1 <1.0 - (15-25) Cleanup MW-1'2 10/8/2020 24.911 35.9 - - - - - - - - - - - - - - - - - - - - - - Post-Cleanup Four MW-1-011321 1/13/2021 22.59 38.2 -50 <130 <250 ND <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 -0.020 -0.020 ND 2.3 <1.0 8.1 <1.0 5.3 <1.0 - Quarters for Compliance MW-1-040721 4/7/2021 22.44 38.4 -50 -130 <250 ND <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 -0.020 -0.020 ND <1.0 <1.0 - <2.0 <2.0 <1.0 <1.0 - MW-1-071321 7/13/2021 24.09 36.7 -50 -130 <250 ND <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 -0.020 -0.020 ND <1.0 <1.0 - <2.0 <2.0 <1.0 <1.0 - MW-2-180202 2/2/2018 12.72 40.9 -50 <130 <250 - <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 -0.020 ND <1.0 <1.0 2.5 <1.0 - <0.20 MW-2'2 5/1/2018 Dry NA - - - - - - - - - - - - - - - - - - - - - - - Pre-Cleanup MW-2'2 8/8/2018 Dry NA - - - - - - - - - - - - - - - - - - - - - - - MW-2'2 11/14/2018 Dry NA - - - - - - - - - - - - - - - - - - - - - MW-2 First Quarter Post- (5-15) Cleanup MW-212 7/9/2020 53.60 Dry NA - - - - - - - - - - - - - - - - - - - - - - - - - MW-2'2 10/8/2020 Dry NA - - - - - - - - - - - - - - - - - - - - - - -Post Cleanup Four MW-2-011321 1/13/2021 11.70 41.90 <50 <130 <250 ND <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 -0.020 -0.020 ND <1.0 <1.0 - <2.0 <2.0 <1.0 <1.0 - Quarters for Compliance MW-2'2 4/7/2021 Dry NA - - - - - - - - - - - - - - - - - - - - - - - MW-2'2 7/13/2021 Dry NA - - - - - - - - - - - - - - - - - - - - - - - MW-3-180202 2/2/2018 27.63 28.1 -50 <130 <250 - 0.224 -0.020 -0.020 -0.020 -0.020 -0.020 -0.020 -0.020 <0.020 <0.020 <0.020 <0.020 ND 1.3 - <1.0 4.0 - <3.0 - -0.20 MW-3-180501 5/1/2018 27.36 28.4 -50 -130 <250 ND <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 -0.020 -0.020 ND 1.8 - <1.0 <2.0 - <1.0 - -0.20 Pre-Cleanup MW-3-180808 8/8/2018 28.08 27.6 -50 <1301 <250 NDI <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 -0.020 -0.020 ND 1.0 -1 <1.0 2.7 - <1.0 - -0.20 MW-3-181114 11/14/2018 28.58 27.1 <50 <130 <250 ND <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 -0.020 0.0201 0.020 ND 1.3 - <1.0 56 - 7.7 - -0.20 MW-3 First Quarter Post- MW-3-070920 7/9/2020 55.72 28.72 27.0 <50 600 610 NO <0.020 0.022 <0.020 <0.020 <0.020 <0.020 <0.020 -0.020 <0.020 -0.020 -0.020 <0.020 ND 36 <1.0 - 200 <1.0 44 <1.0 - A5(29-44) Cleanup MW-3-100820 10/8/2020 29.21 26.5 <50 <130 <250 ND <0.020 <0.020 <.0020 <.0020 <.0020 <0.020 <0.020 <0.020 <0.020 <0.020 -0.020 -0.020 ND <1.0 <1.0 - <2.0 <1.0 <1.0 <1.0 Post Cleanup Four MW-3-011321 1/13/2021 28.65 27.1 <50 <130 <250 ND <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 -0.020 -0.020 ND L6 <1.0 - 6.5 <2.0 1.1 <1.0 - Quarters for Compliance MW-3-040721 4/7/2021 28.41 27.3 <50 <130 <250 ND <0.020 0.023 -0.020 -0.020 -0.020 -0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 ND <1.0 <1.0 2.7 <2.0 <1.0 <1.0 - MW-3-071321 7/13/2021 28.80 26.9 <50 <130 <250 ND <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 -0.020 -0.020 ND 2.5 <1.0 11 <2.0 1.4 <1.0 - FirstQuarterPost- MW-5-070920 7/9/2020 26.72 27.1 <50 <130 <250 ND <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 ND <1.0 <1.0 - 2.2 <1.0 <1.0 <1.0 - Cleanup MW-5 MW-5-100820 10/8/2020 27.13 26.6 <50 <130 <250 ND <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 ND <1.0 <1.0 - <2.0 <1.0 <1.0 <1.0 - (3040) Post-Cleanup Four53.77 MW-5-011321 1/13/2021 26.70 27.1 <50 -130 -250 ND -0.020 -0.020 -0.020 -0.020 -0.020 -0.020 -0.020 -0.020 -0.020 -0.020 -0.020 -0.020 ND 3.2 <1.0 9.3 <2.0 2.3 <2.0 Quarters for Compliance MW-5-040721 4/7/2021 26.35 27.4 <50 -130 -250 ND -0.020 -0.020 -0.020 -0.020 -0.020 -0.020 -0.020 -0.020 -0.020 -0.020 -0.020 -0.020 ND 1.3 <1.0 - 3.7 <2.0 <1.0 <1.0 - MW-5-071321 7/13/2021 26.82 27.0 <50 <130 <250 ND <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 ND <1.0 <1.0 - 3.1 <2.0 <1.0 <1.0 - FirstQuarter Post- Cleanup MW-6-070920 7/9/2020 27.91 27.1 <50 <130 <250 ND <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 -0.020 -0.020 ND 3.7 <1.0 - 14 <1.0 2.2 <1.0 - Post- Cleanup MW-0 MW-6-100820 10/8/2020 28.36 26.6 <50 <130 <250 ND <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 ND 2.1 1.7 - <2.0 <2.0 <1.0 <1.0 - (30-40) Post-Cleanup Four MW-6-011321 1/13/2021 54.96 27.91 27.1 <50 130 <250 NO <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 ND 15 3.3 - 35 <2.0 5.3 <1.0 - Quarters for Compliance MW-6-040721 4/7/2021 1 27.59 27.4 <50 <130 <250 ND <0.020 <0.020 <0.020 <0.020 <0.020 -0.020 <0.020 <0.020 <0.020 <0.020 <0.020 -0.020 ND 5.1 2.9 - 5.3 <2.0 1.3 <1.0 - MW-6-071321 7/13/2021 1 27.94 27.0 <50 -130 <250 ND <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.020 <0.--- <0.020 <0.020 ND 3.4 2.7 - 3.0 <2.0 <1.0 <1.0 - MTCA Method A Cleanup Level or Method B Screening Level(pg/L)`s 1,00010 500 500 varies 160 4800 640 480 NE See cPAH TEQ 0.1 5 5 50 15 2 Natural Background Concentration,Snohomish Basin(pg/L)" 11.8 NE NE NE NE Notes: 'Chemical analyses performed by ALS of Everett,Washington.Chemical analytical laboratory reports for November 2020 through 2021 sampling events are included in Appendix C.Prior chemical analytical reports submitted to Ecology under separate cover. 2 Monitoring well locations are shown in Figures 3 through 7. a Depth to groundwater measured relative to feet below top of casing[bTOC]at time of sampling. °Monitoring well casing elevation for MW 1,MW-2,MW 3,MW 5,and MW-6 surveyed on July 10,2020.Ground surface elevation at each well is inferred from she survey map provided by City of Everett. s Gasoline-range hydrocarbons analyzed by Northwest Method NWTPH-Gx. s Diesel-and lube oil-range hydrocarbons analyzed by Northwest Method NWFPH-Dx. 7 Volatile organic compounds(VOCs)analyzed by U.S.Environmental Protection Agency(EPA)Method 8260C.VOCs were not detected in the samples analyzed.See associated chemical analytical laboratory reports for full list of analytes and associated laboratory reporting limits. s Polycyclic aromatic hydrocarbons(PAHs)and carcinogenic PAHs(cPAHs)analyzed by EPA Method 8270D/SIM. 9Total naphtalenes are the sum of naphthalene,1-methylnaphthalene,and 2-methylnaphthalene. 10Total carcinogenic PAHs(cPAHs)calculated using the toxicity equivalency(TEQ)methodology in Washington Administrative Code(WAC)173-340-708(8).Non-detections were assigned half the reporting limit for these calculations. "Total and Dissolved Metals analyzed by EPA Methods 200.8/7470A. '2 Groundwater was not present in sufficient quantity for sampling. 1a MTCA Method A cleanup levels shown if established.Method B cleanup level shown if no Method A cleanup level is established.The MTCA Method B cleanup level shown is the lowest for either carcinogen or no-arcinogen,based on direct contact. 14The cleanup level for gasoline is 1,000 pg/L when benzene is not present. Is Natural background groundwater arsenic in Snohomish Basin established per Ecology Publication 14-09-044 Draft for Public Comment,datedJuly 2021. MTCA=Model Toxics Control Act pg/L=micrograms per liter ND=analyte not detected -=not analyzed NE=not established <=analyte not detected above the listed laboratory reporting limit Bolded value indicates analyte detected atthe concentration shown. Shading indicates that detected concentration is greater than the MTCA Method A cleanup level and greater than Ecology's published natural background concentration(arsenic only,total or dissolved). Shading indicates that detected concentration is greater than corresponding MTCA Method A cleanup level. File No.0661-108-03 Table 1 1 January 24 2022 Page 1 of 1 CT E O E N G I N E E R S.L)