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Table 1 <br /> Well Network Recommendations <br /> ' Union Pacific Railroad Company <br /> Tracy,CA-Maintenance Facility <br /> Approximate Casing <br /> Well Identification Depth Diameter Keep Destroy Rationale <br /> (feet bgs) (inches) <br /> ' -A zone piezometer well no longer needed with removal of <br /> PZ-1 20 2 1 remediation system <br /> -LNAPL observed dudng the first quarter of 2010 <br /> ' -A zone piezometer well no longer needed with removal of <br /> PZ-2 20 2 1 remediation system <br /> -LNAPL observed during the first quarter of 2010 <br /> ' PZ-3— 20 2 1 -A zone piezometer well no longer needed with removal of <br /> remediation system <br /> PZ-4 20 2 1 -A zone piezometer well no longer needed with removal of <br /> ' remediation system <br /> PZ-5 20 2 1 -A zone piezometer well no longer needed with removal of <br /> remediation system <br /> ' -A zone piezometer well no longer needed with removal of <br /> PZ-6 20 2 1 remediation system <br /> -redundant-downgradient of well MW-13A <br /> -A zone piezometer well no longer needed with removal of <br /> PZ-7 20 2 1 remediation system <br /> -redundant-downgradlent of well MW-24A <br /> -A zone piezometer well no longer needed with removal of <br /> PZ-8 20 2 1 remediation system <br /> ' -redundant-downgradient of well MW-24A <br /> -A zone piezometer welt no longer needed with removal of <br /> PZ-9 20 2 1 remediation system <br /> -redundant-downgradient of well MW-24A <br /> -A zone piezometer well no longer needed with removal of <br /> PZ-10 20 2 1 remediation system <br /> redundant-downgradient of well MW-24A <br /> ' -Vapor point no longer needed with removal of remediation system <br /> SG-01 10 1 1 -Unlikely to encounter groundwater <br /> SG-02 10 1 1 -Vapor point no longer needed with removal of remediation system <br /> ' -Unlikely to encounter groundwater <br /> SG-03 10 1 1 -Vapor point no longer needed with removal of remediation system <br /> -Unlikely to encounter groundwater <br /> ' SG-04 10 1 1 -Vapor point no longer needed with removal of remediation system <br /> -Unlikely to encounter groundwater <br /> ' SG-05 10 1 1 -Vapor point no longer needed with removal of remediation system <br /> -Unlikely to encounter groundwater <br /> SG-06 10 1 1 -Vapor point no longer needed with removal of remediation system <br /> ' -Unlikely to encounter groundwater <br /> SG-07 10 1 1 -Vapor point no longer needed with removal of remediation system <br /> -Unlikely to encounter groundwater <br /> SG-08 10 1 1 -Vapor point no longer needed with removal of remediation system <br /> -Unlikely to encounter groundwater <br /> ' SG-14 10 1 1 -Vapor point no longer needed with removal of remediation system <br /> -Unlikely to encounter groundwater <br /> ' Page 5 of 6 <br />