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Table 1.Monitoring Well Construction Details 26700 South Banta Road Tracy,California Well Monitored Well Screened Top of Casing Well Depth Screen Elevation Bottom of Well 1 Diameter Interval Elevation Top Bottom Elevation Identification Zone (inches) ft btoc ft NAVD88 (ft btoc) ft NAVD88 (i ) ( ) ( ) (ft NAVD88) (ft NAVD88) ( ) MW-12 4 13-23 76.02 23.5 63.02 76.02 52.52 MW-23 4 13-23 78.08 25 65.08 78.08 53.08 MW-32 4 13-23 78.93 23 65.93 78.93 55.93 MW-44 4 13-23 76.68 23.5 63.68 76.68 53.18 MW-5 2 10-25 76.64 31 66.64 76.64 45.64 MW-6' Upper 2 10-25 76.64 25 66.64 76.64 51.64 MW-72 2 12-22 77.90 23 65.90 77.90 54.90 MW-84 2 10-20 78.79 23 68.79 78.79 55.79 MW-9 2 12-27 72.31 27 60.31 72.31 45.31 MW-11 2 15-30 66.63 30 51.63 66.63 36.63 MW-13 2 23-33 62.91 33 39.91 62.91 29.91 MW-10 2 45-55 72.25 55 27.25 72.25 17.25 MW-12 Middle 2 42.5-52.5 66.58 52.5 24.08 66.58 14.08 MW-14 2 48-58 63.01 58 15.01 63.01 5.01 AP-26 Middle/Lower 6 52-86 78.68 86 26.68 78.68 -7.32 MW-15 2 68-78 63.00 78 -5.00 63.00 -15.00 MW-162 Lower 2 85-89 76.62 90 -8.38 76.62 -13.38 Notes: 1.MW-1 through MW-15 were surveyed February 7,2005,by Morrow Survey.MW-16 was surveyed and MW-10,MW-11,and MW-12 were resurveyed on January 8,2009,by Stantec. 2.MW-1,MW-3,MW-7,and MW-16 were decommissioned on June 22,2023,by WSP. 3.MW-2 was decommissioned in August 2013 by Stantec. 4.MW-4 and MW-8 were decommissioned in October 2007 by SECOR. 5.MW-6 was decommissioned in September 2025. 6.AP-2 was decommissioned in April 2010. ft btoc:feet below top of casing ft NAVD88:elevation in feet referenced to the North America Vertical Datum of 1988 Page 1 of 1 May 2026