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2.00 <br /> 1.75 - <br /> 1.50 - <br /> 1.25 - <br /> .-. I I I I I I I I I I I I I <br /> ` I I I I I I I I I I I I I <br /> I I I I I I I I I I I I I <br /> C I I <br /> 0 1.00 -----I---- - <br /> i I I I I I I I I I I I I I I <br /> I I I I I I I I I I I I I I <br /> O I I I I I I <br /> U 0.75 -----+-----�-- <br /> I I I I I I I I I <br /> I I I I I I I I I <br /> I I I I I I I I <br /> I I I I I I I I I <br /> 0.50 - - - - - - - - - - - - - - - - - <br /> I I I I I I I I I I <br /> I I I I <br /> I I I I I I I <br /> I I I I I I I I I <br /> I i I I I I I I I I I <br /> I I I I I I I I I i i I I I I I <br /> 0.25 ----I ----�- ---� -- - rt --t- -- ----- --- - ---- ----- -----rt-----rt-----t-----1- ----r-----r- ---I-----�- <br /> I <br /> I I I I I I I I I I <br /> I I I I I I I I I <br /> I i I I I I I I I I I <br /> 0.00 I I I I <br /> 2005 2006 2007 2008 2009 2010 2011 2012 20'13 20'14 20'15 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 <br /> Date <br /> Notes: <br /> Where a primary and duplicate sample were collected,the higher of the primary and duplicate <br /> result is displayed. <br /> Open symbols represent non-detected results. Carbon Tetrachloride Concentration Trends <br /> Non-detect results that were reported to the method detection limit(between November 2005 Lower Zone Wells <br /> and March 2014;between May 2020 and March 2025)are presented at the method detection MW-15 ❑ MW-16 O LM151 B f LM 177B February 2005—March 2025 <br /> limit;non-detect results that were reported to the laboratory reporting limit(between February 26700 South Banta Road <br /> and August 2005;between September 2014 and March 2019)are presented at the reporting — — — — MCL 0.5 L <br /> limit. ( µgo Tracy California <br /> pg/L:microgram per liter <br /> MCL: maximum contaminant level Gevsyntec v Figure <br /> Cnnsultants <br /> WR3313A May 2025 14 <br /> in racy rgect2 25-03_ iennial ig 2-14- -1_ istoricC 1_1 mesenes.xsx <br />