EP 1110-1-19
30 Jun 01
RA report. In the case of Fund-financed LTRA that continues for a full
ten years without achieving the cleanup goals, O&M starts upon
completion of LTRA. In the case of Federal facility-lead groundwater
and surface water restorations, including monitored natural attenuation,
O&M starts on the date that the designated Regional official approves the
interim RA report in writing. O&M completion is defined, where
appropriate, as the date that the remediation objectives/cleanup goals or
conditions specified has been met with respect to O&M. O&M may be
completed when the cleanup goals have been achieved, or it may be
indefinite, as in the case of a landfill cap.
Under CERCLA 104, a person or entity potentially responsible for a
Potentially
release of hazardous substances, pollutants, or contaminants into the
Responsible Party
environment (i.e., a potentially responsible party [PRP]), may also be
allowed to conduct certain response actions in accordance with CERCLA
122, if the lead agency determines that party is qualified and otherwise
capable. For a PRP-lead RI/FS response action, either EPA or the State
serves as the lead agency and oversees the PRP's work and development
of the proposed plan and the ROD. The lead agency determines whether
the PRP, or the PRP's contractor, is qualified and capable of doing the
work. PRPs may participate in the remedy selection process by
submitting comments on the proposed plan or other information contained
in the administrative record file during the formal public comment period
that is held before the final remedy selection. However, PRPs generally
should not be permitted to write proposed plans, RODs, or any
amendments to those.
Potentially responsible party long-term response (PRP LR) is a type of
Potentially
O&M. In the past, the term LTRA has been used to describe PRP-lead
Responsible Party
groundwater and surface water restoration measures, including monitored
Long-Term
natural attenuation. However, PRP-lead groundwater and surface water
Response
restoration measures, including monitored natural attenuation, are covered
by a separate action, PRP LR. Because PRP LR is a specific type of
O&M, the ten-year timeframe does not apply. LTRA begins on the date
that the designated Regional official approves the interim RA report in
writing.
PRP LR is complete after a technical impracticability
determination has been made, or cleanup goals have been achieved and
documented in a final RA report, whichever occurs first. The term PRP
LR does not apply to groundwater and surface water restoration measures
conducted under other leads, to groundwater or surface water containment
measures, groundwater or surface water measures initiated for the primary
purpose of providing a safe drinking water supply, or to groundwater
monitoring.
A-3
Previous Page
