Final Second Five-Year Review Report Fort Ord Superfund Site ...

7.5 Surface Water Outfalls
The Basewide Surface Water OF Investigation (SWOI) evaluated contamination within, and adjacent to,
thirty-five OFs and manholes. The OFs at Fort Ord are part of a surface water drainage system made up
of aboveground natural and engineered drainages that discharge to, or receive discharge from, the
subsurface storm drain system. Water in the drainage system may have come in contact with areas of
known historical chemical usage. The surface water OFs OF-1 through OF-14, OF-16 through OF-30,
OF-32, and OF-33 were included in RI Sites ROD because they were investigated as part of the
Basewide RI/FS.
Results of the SWOI indicated that soil and sediment near or in the surface water OFs contained the
following contaminants: TPH, organic chemicals, pesticides, lead, cadmium, and polychlorinated
biphenyls (PCBs). A Human Health Screening Risk Evaluation indicated that soil and sediment from
OF-15, OF-34, and OF-35 should be removed for the protection of human health. No further action was
required for the other OFs that were investigated.
7.5.1 Site Summary
Contaminated soil and sediment was excavated and removed from OF-15, OF-34, and OF-35 under the
IA Sites program at Fort Ord (Section 10.0). The cleanups related to these three sites are complete.
The selected remedy for the remaining OFs was no further action and allows for unrestricted reuse.
As part of the redevelopment of the former Fort Ord, the original storm drainage system has been
modified significantly since 2002. Four of the five storm water OF pipes that extended into Monterey
Bas were removed and several percolation basins were constructed. A Storm Water Master Plan was
prepared for FORA to provide guidelines for implementing storm water.
7.6 Site 25
Site 25 is an 11-acre, unpaved field in the Main Garrison used from 1950 to 1972 to store
decommissioned equipment, including transformers containing PCBs. The selected remedy was no
further action and allows for unrestricted reuse.
7.7 Site 33
7.7.1 Background
Site 33 includes the golf course maintenance area, which consists of a pesticide mixing area, an unpaved
surface drainage area, and a former pesticide storage area. The golf course was established in the early
1950s, and pesticides and herbicides were used regularly since operations began. Pesticides, herbicides,
and metals were detected in soil at concentrations below PRGs set for reuse of this site.
The Human Health Risk Assessment for soil at Site 33 evaluated exposure of a golf course maintenance
worker to Contaminants of Potential Concern (COPCs). Based on the assessment, adverse human health
effects are not expected for the proposed reuse. A quantitative ERA was also performed (HLA, 1996f).
Ecological impacts were evaluated by collecting plants and animals and measuring chemical
concentrations of COPCs in their tissues. Results of the ecological evaluation indicated that tissue
concentrations in prey were not likely to produce adverse effects in animal populations, nor would tissue
concentrations in plants within the surrounding habitat be adversely affected.
Final
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FORMER FT ORD 5YR REVIEW 2007_FINAL United States Department of the Army