EP 1110-1-18
24 Apr 00
Group and US Army Engineering and Support Center, Huntsville." Since emergency removal
actions are not normally a USACE responsibility, they are not further addressed in this
document.
d. Time Critical Removal Actions.
(1) Purpose.
(a) TCRAs are removal actions conducted to respond to an imminent danger posed by the
release or threat of a release, where cleanup or stabilization actions must be initiated within six
months to reduce risk to public health or the environment. Once the imminent threat at a site is
addressed through the TCRA, additional work that is necessary is completed through the
NTCRA process.
(b) A TCRA is intended to address only the imminent safety hazard posed by the presence
of OE, not the cleanup requirements that can be deferred for later action during the NTCRA
process. If the TCRA occurred before the EE/CA process was initiated, the risk at the site will
be re-evaluated by the completion of a RAC Worksheet, which is discussed in Chapter 6. Based
on the RAC score, the site will be reprioritized for a response action through the NTCRA
process.
(2) Action Memorandum.
(a) Contents. The Action Memorandum for a TCRA will provide the following
information:
Location and description of the site, including DERP-FUDS project number, if
applicable.
Description of the OE hazards existing at the site.
Description of the current land use activities and risk of exposure.
Previous actions that have taken place to address the OE hazard.
An endangerment determination with the following statement: "There is a significant
possibility that an individual may encounter OE hazards at this site, and that these
hazards may cause injury or death to individuals who encounter the hazards if not
addressed through the response action described in the Action Memorandum".
Rationale for clearance depth selection and justification for exceeding clearance depths
specified for TCRAs.
5-3
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