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3.5 <br /> 3.0 <br /> 2.5 <br /> J 2.0 <br /> 0) <br /> c <br /> O <br /> L <br /> v 1.5 <br /> c <br /> O <br /> U <br /> 1.0 <br /> I 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 I I <br /> I I I I I I I I I I <br /> 0.5 I - - - - - - - - - - - - - - - - - - - - - - - - - - - - I I I I I I Y� I - - - - - - - - - - - - - - - - <br /> �� � � � T I— r r ~-'T�_w f� -r-r- <br /> I <br /> I I I I I I I I I I I I I I I l <br /> I 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 <br /> I 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 <br /> I I I I I I I I I <br /> 0.0 I I I I I I I I I I I I <br /> 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 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. fMW-1 fMW-3 0 MW-5 BMW-6 Carbon Tetrachloride Concentration Trends <br /> Non-detect results that were reported to the method detection limit(between November 2005 Upper Zone Wells <br /> and March 2014;between May 2020 and March 2025)are presented at the method detection February 2005—March 2025 <br /> limit;non-detect results that were reported to the laboratory reporting limit(between February f MW-7 MW-9 f MW-1 1 0 MW-13 26700 South Banta Road <br /> and August 2005;between September 2014 and March 2019)are presented at the reporting <br /> limit. Tracy California <br /> pg/L:microgram per liter <br /> MCL: maximum contaminant level — — — — MCL(0.5 µg/L) Geosyntec❑ Figure <br /> COTISultaiit s <br /> W R3313A May 2025 12 <br /> PAGIS�Ohn racy rgect 2025-03_ iennia ig12-1 - -1_ istoric _I meseries.x sx <br />