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Table 2 <br /> Proposed CPT/HydroPunchTm Boring Locations <br /> Union Pacific Railroad Company <br /> Former Maintenance Facility <br /> Tracy, California <br /> Phase II Field Investigation Work Plan <br /> Hydro Punch TM Depth <br /> Rationale Location <br /> Location <br /> =SL <br /> HP-21 30 Assess the downgradient edge of the TEPH plume. Depending on the results from this boring, Northeast of Engine House <br /> additional ste out borings may be advanced. <br /> HP-22 30 Assess the downgradient edge of the TEPH plume. Depending on the results from this boring, Northeast of Engine House <br /> additional ste out borings may be advanced. <br /> HP-23 30 Assess the downgradient edge of the TEPH plume. Depending on the results from this boring, North of Engine House, near <br /> additional ste out borings may be advanced. Extraction Gallery Pump House <br /> Assess the cross-or downgradient edge of the plume west of the transition zone. Depending on <br /> HP-24 30 the results from this borin ,additional ste out borin s ma be advanced. North of Station House <br /> Notes and Abbreviations: <br /> CPT-cone penetrometer testing <br /> ft bgs-feet below ground surface <br /> •g/L-micrograms per liter <br /> MW-monitoring well <br /> TEPH-Total Extractable Petroleum Hydrocarbons <br /> TPCA-Toxic Pits Cleanup Act <br /> Tables 1-3(12-30-08).xls ARCADIS Page 3 of 3 <br />