EP 1110-1-19
30 Jun 01
APPENDIX A
GLOSSARY OF ENVIRONMENTAL RESTORATION TERMS
The following definitions were taken primarily from Superfund/Oil Program Implementation
Manual FY 2001, Appendix B: Response Actions (OSWER Publication 9200.3-14-1F-P).
This measure is used to indicate when cleanup goals have been achieved
Cleanup Goals
for groundwater and surface water restoration, including monitored
Achieved
natural attenuation. It is necessary to track achievement of cleanup goals
for these remedies because the goals will not have been achieved at the
time that remedial action (RA) has been completed. Cleanup Goals
Achieved has been accomplished once the final RA report has been
approved in writing.
The primary objective of a feasibility study (FS) is to ensure that
Feasibility Study
appropriate remedial alternatives are developed and evaluated such that
an appropriate remedy may be selected. A FS involves the identification
and detailed evaluation of potential remedial alternatives. This process
begins with the formulation of viable alternatives, which involves
defining remediation objectives/cleanup goals, general response actions,
volumes or area of media to be addressed, and potentially applicable
technologies. Following a preliminary screening of alternatives, a
reasonable number of appropriate alternatives undergo a detailed analysis
using the nine evaluation criteria in the National Contingency Plan
(NCP). During a remedial investigation/feasibility study (RI/FS),
information is gathered to support an informed decision regarding the
remedy (if any) that is most appropriate for a given site or an operable
unit within a site. Interim or early actions to initiate risk reduction
activities can be undertaken throughout the RI/FS process.
Long-term response action (LTRA) is defined as the Fund-financed
Long-Term
operation of groundwater and surface water restoration measures,
Response Action
including monitored natural attenuation, for the first ten years of
restoration. The Fund continues to pay up to 90 percent of the costs
during the LTRA period, then the State funds the entire operation after the
ten year period has expired. LTRA begins on the date that the designated
Regional official approves the interim RA report in writing. LTRA is
complete after 10 years, after a technical impracticability determination
has been made, or after cleanup goals have been achieved and
documented in a final RA report, whichever occurs first. LTRA
transitions to O&M if cleanup goals have not been achieved, or if
continued monitoring will be required, once ten years have expired. The
term LTRA does not apply to groundwater and surface water restoration
measures conducted under other financing mechanisms, groundwater or
surface water containment measures, groundwater or surface water
measures initiated for the primary purpose of providing a safe drinking
water supply, or groundwater monitoring.
A-1
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