Alternatives Assessment of Interim Response Actions for Other Contamination Sources. Motor Pool Area

The Interim Response Action IRA Alternative Assessment Document describes the process and results of the alternative assessment conducted for the Motor Pool Area at the Rocky Mountain Arsenal RMA. The Motor Pool Area is located in Section 4 of RMA. The Motor Pool Area appears to be a potential source of trichloroethylene TCE contamination to the groundwater. This evaluation is discussed in subsection 2.2.2. The goal of this assessment document is to evaluate alternatives based upon, but not limited to, factors such as the protection of human health and the environment, mitigation of the threat to human health, and the reasonableness of cost and timeliness. The assessment seeks to balance preferences for treatment on site and for responses that permanently reduce the mobility, toxicity, or volume of hazardous substances against the need, in the context of removal actions, for consistency with the final remedy and for responses that are practical, cost-efficient, and that reduce or control hazards posed by the site as early as possible.