EP 1110-1-19
30 Jun 01
Exhibit 2-1
The Superfund Pipeline
b.
Remedial Investigation/Feasibility Study
(1)
The remedial investigation/feasibility study (RI/FS) process is initiated at the time
of a site's listing on the NPL. The RI/FS gathers the information necessary to select a remedy
that will meet the statutory and regulatory requirements of the Superfund cleanup program.
(2)
The objective of the RI is to collect the data necessary to assess the current and
future potential risks to human health and the environment, and to support the development,
evaluation and selection of appropriate response alternatives. The RI may be performed in
several stages so that the investigation is refined as it progresses. The RI includes field
investigations, treatability studies, a baseline risk assessment, and the initial identification of
applicable or relevant and appropriate requirements (ARARs) (i.e., all State and Federal laws
outside Superfund regulations that warrant consideration).
(3)
The FS begins by formulating viable alternatives. This requires that contaminants
of concern, potential exposure pathways, remediation objectives/cleanup goals, general response
actions, subject volumes or areas of media, and potentially applicable technologies be identified.
2-2