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Work Plan <br /> Background <br /> An aquifer storage and recovery(ASR) well has been proposed in Lathrop, CA.To evaluate subsurface <br /> conditions and identify zones suitable for recharge, a test hole/multi-completion monitoring well is to be <br /> constructed.This well is intended to provide information on baseline conditions and long-term <br /> monitoring of ASR operations. <br /> Project Information <br /> The proposed drilling site is located at 950 Stewart Road, Lathrop, CA(Figure 1). <br /> Additional info: <br /> o Drilling contractor: Bradley and Sons Drilling and Pump System <br /> o Subcontractor/Engineer: Luhdorff&Scalmanini, Consulting Engineers <br /> o Project Location Address: 950 Stewart Road, Lathrop, CA 95330 <br /> o APN: 21-21-001 <br /> o Property is owned by Califia, LLC. Land to be transferred to the City of Lathrop. <br /> o Work is to be completed in the late spring of 2022 <br /> Work Sequence and Conceptual Design <br /> An 800-foot test hole is to be drilled where drill cuttings will be collected every 10 feet and at every <br /> formation change.A geophysical survey will also be conducted to determine additional subsurface <br /> properties. Analysis of the drill cuttings and geophysical survey will be used to finalize the monitoring <br /> well design.The monitoring well will consist of three monitoring zones, one above and two below the <br /> Corcoran Clay(E-Clay). A conceptual well design based on nearby well construction and lithologic logs is <br /> presented in Figure 2. Water quality will be tested in each of the monitoring zones.A list of the water <br /> quality analytes is included in Attachment A. <br />