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Groundwater Monitoring Well Construction Workplan <br /> February 2024 <br /> Background <br /> The San Joaquin County Public Works Department is the lead agency for the TSb Sustainable <br /> Groundwater Management Act implementation. The Subbasin is being managed by six <br /> Groundwater Sustainability Agencies (GSAs): Banta-Carbona Irrigation District, BBID, the <br /> cities of Tracy and Lathrop, San Joaquin County, and Stewart Tract. Together they created and <br /> adopted the TSb GSP. <br /> During preparation of the GSP, the westerly extent of the Corcoran Clay was not defined in this <br /> area. Therefore, this was identified as a data gap. MW-201 is located within the known extent <br /> of the clay. MW-202 is to refine the extent of the clay. <br /> In 2019, the GSAs applied to DWR for Technical Support Services to construct new monitoring <br /> wells in the Subbasin. In 2022, DWR committed to drilling up to six new monitoring wells in the <br /> Subbasin, including MW-201 and MW-202. <br /> GEI Consultants, Inc. 6 <br />