Although a fence surrounds the site restricting access, future workers have the potential to be in direct contact with soils down to a depth of 15 feet. A deed restriction will alert future owners on restrictions on land use or development and risks associated with these activities. Groundwater below the site has the potential to be affected by downward filtration of surface water through contaminated soils. However, sampling indicates that groundwater has not been contaminated and that leaching is not occurring. Therefore, the potential for ingestion of contaminated water due to site materials is unlikely.
Surface water is channeled to the pit floor where it percolates downward.
Due to the nature of the soils, precipitation does not pond on or run off the surface. Transport of contaminated soils off-site via surface water is unlikely due to these features. Contact with temporarily ponded surface waters might happen during an extended precipitation event. Surface waters are not a permanent site feature, thus it represents an insignificant pathway. According to MTCA, compliance monitoring is required for all cleanup actions.