EP 1110-1-18
24 Apr 00
An explanation of the proposed action and how the action addresses the actual threat.
The explanation should differentiate between a minimum scope TCRA and expanded
scope TCRA, which are discussed below.
(b) Review and Approval Process. The Action Memorandum for a TCRA is executed by
the OE Design Center.
The Director for Environmental Programs, ACSIM approves all Action Memorandums
projects greater than million, including National Priorities List (NPL) projects. The
OE MCX will review the Action Memorandum. Concurrence by CECC-C and CEMP-
R is required.
The MSC Commander approves Action Memorandums for projects between million
and million, in addition to all NPL projects under million.
The District Commander approves non-NPL Action Memorandums for projects less
than million.
(3) Types of TCRAs. There are two types of TCRAs that may be selected during an OE
response action: a minimum scope TCRA and an expanded scope TCRA.
(a) Minimum Scope TCRA. During a minimum scope TCRA, the minimum resources
necessary to address the imminent threat should be allocated. This type of TCRA will be
restricted to the following:
Fences to limit access to the property.
Removal of surface OE items.
Restrictive signs to warn of the OE hazard.
Capping or containment of the OE contamination.
A combination of the above.
(b) Expanded Scope TCRA. An expanded scope TCRA may be selected if it is deemed as
cost effective to address cleanup requirements in order to avoid future remobilization costs. For
this to occur, a high degree of confidence must exist such that a subsurface clearance will
complete the removal response for a site. An expanded scope TCRA is usually only initiated for
known burial caches or well-defined target areas. The depth of clearance should not exceed the
limits of UXO detection equipment and the depth that is consistent with future land use.
5-4
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