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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 /> HydroPunch TIM Depth Rationale Location <br /> Location ft b s <br /> Assess groundwater in the area between wells MW-05A and MW-13A,where TEPH was not <br /> HP-01 30 detected and wells MW-09A and MW-10A where TEPH was detected at 370 and 430•g/L, Northwest of Engine House <br /> respectively. Depending on the results from this boring,additional stepout borings may be <br /> advanced. <br /> Assess TEPH plume north of well MW-09A,where TEPH concentration is 370 ug/L and well <br /> HP-02 30 MW-15A,where TEPH was not detected. Depending on the results from this boring,additional In the vicinity of Station House <br /> stepout borings may be advanced. <br /> Assess TEPH plume northeast of well MW-09A,where TEPH was detected at 370•g/L and <br /> HP-03 30 north of MW-14A,where TEPH was detected at 350•g/L. Depending on the results from this North of Engine House <br /> borinq,additional stepout borings may be advanced. <br /> Assess TEPH plume in the transition area between the source area and well MW-15A,where <br /> HP-04 30 TEPH was not detected. Depending on the results from this boring,additional stepout borings North of Engine House <br /> may be advanced. <br /> Assess TEPH plume in the transition zone between wells MW-15A,where TEPH was not <br /> HP-05 30 detected,and well MW-22A,where TEPH was detected at 170•g/L. Depending on the results Northeast of Engine House <br /> from this boring,additional stepout borings may be advanced. <br /> Assess TEPH plume in the area between wells MW-14A and MW-22A,where TEPH was <br /> HP-06 30 detected at 350 and 170•g/L, respectively. Depending on the results from this boring, Northeast of Engine House <br /> additional stepout borings may be advanced. <br /> Assess TEPH plume along the perimeter, between wells MW-12A and MW-15A,where TEPH <br /> HP-07 30 was not detected and well MW-22A,where TEPH was detected at 170•g/L. Depending on the Northeast of Engine House <br /> results from this boring,additional stepout borings may be advanced. <br /> Assess TEPH plume along the perimeter in the transition zone and between the source area <br /> HP-08 30 and well MW-22A,where TEPH was detected at 170•g/L. Depending on the results from this Northeast of Engine House <br /> boring, additional stepout borings may be advanced. <br /> Assess TEPH plume southeast of well MW-08A, in which TEPH concentrations were 8,900 <br /> HP-09 30 •g/L. Depending on the results from this boring, additional stepout borings may be advanced. South of Engine House <br /> Assess TEPH plume southwest of well MW-08A,in which TEPH concentrations were 8,900 <br /> •g/L,and downgradient of former TPCA pond excavation. Depending on the results of the data <br /> HP-10 30 from this boring, additional stepout borings may be advanced around the downgradient Southwest of Engine House <br /> perimeter of the former TPCA pond excavation area, or south of the railroad tracks. <br /> Tables 1-3(12-30-08).xis ARCADIS Page 1 of 3 <br />