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Groundwater Monitoring Well Construction Workplan <br /> February 2024 <br /> Introduction <br /> Monitoring wells (MW) MW-201 and MW-202 are proposed 4-level nested monitoring well <br /> which will aid in implementation of the Tracy Subbasin(TSb or Subbasin) Groundwater <br /> Sustainability Plan(GSP),by filling a groundwater level data gap associated with aquifers above <br /> (Upper Aquifer) and below(Lower Aquifer). Both aquifers are separated by the Corcoran Clay <br /> in the most of the Subbasin. MW-201 is expected to be encounter the Corcoran Clay where <br /> MW-202 is located outside of the known extent of the clay. MW-201 and MW-202 monitoring <br /> wells will be used to measure groundwater levels; to develop groundwater contours (along with <br /> other existing monitoring wells); and to assess change in groundwater storage. Water quality <br /> samples will be obtained from the wells shortly after construction and will be analyzed for <br /> general minerals, nitrate, and metals to further characterize groundwater quality in the Subbasin. <br /> Byron-Bethany Irrigation District(BBCID) is the owner of the property where MW-201 will be <br /> located. Mountain House Community Services District(MHCSD) is the owner of the property <br /> where MW-202 will be located. The wells are located a little over 2-miles apart. The drilling will <br /> be performed by Eaton Drilling (Eaton)who is under contract by the California Department of <br /> Water Resources (DWR). The work is being performed under DWR's Technical Services <br /> Support program. GEI Consultant's, Inc., is helping to coordinate activities and has prepared this <br /> workplan. <br /> GEI Consultants, Inc. 3 <br />