EP 1110-1-24
15 Dec 00
Intrusive activity
An activity which involves or results in the penetration of the ground surface at an area known or
suspected to contain OE. Intrusive activities can be of an investigative or removal action nature.
Mandatory Center of Expertise (MCX)
An MCX is a USACE organization that has been approved by HQUSACE as having a unique or
exceptional technical capability in a specialized subject area that is critical to other USACE commands.
Specific mandatory services to be rendered by an MCX are identified on the MCX's homepage.
These services may be reimbursable or centrally funded. The USAESCH is the OE MCX for the
USACE. (ER 1110-1-8153)
Military Munitions
All ammunition products and components produced or used by or for the U.S. DOD or the U.S.
Armed Services for national defense and security, including military munitions under the control of the
DOD, the US Coast Guard, the US DOE, and National Guard personnel. The term military munitions
includes: confined gaseous, liquid, and solid propellants, explosives, pyrotechnics, chemical and riot
control agents, smokes, and incendiaries used by DOD components, including bulk explosives and
chemical warfare agents, chemical munitions, rockets, guided and ballistic missiles, bombs, warheads,
mortar rounds, artillery ammunition, small arms ammunition, grenades, mines, torpedoes, depth charges,
cluster munitions and dispensers, demolition charges, and devices and components thereof. Military
munitions do not include wholly inert items, improvised explosive devices, and nuclear weapons, nuclear
devices, and nuclear components there-of. However, the term does include non-nuclear components of
nuclear devices, managed under DOE's nuclear weapons program after all required sanitization
operations under the Atomic Energy Act of 1954, as amended, have been completed. (40 CFR
260.10)
National Oil and Hazardous Substance Pollution Contingency Plan (NCP)
Revised in 1990, the NCP provides the regulatory framework for responses under CERCLA. The
NCP designates the Department of Defense as the removal response authority for ordnance and
explosives hazards.
Non-Time Critical Removal Action (NTCRA)
NTCRAs are actions initiated in response to a release or threat of a release that poses a risk to human
health, its welfare, or the environment. Initiation of removal cleanup actions may be delayed for six
months or more.
Ordnance and Explosives (OE)
OE consists of either (1) or (2) below:
(1) Ammunition, ammunition components, chemical or biological warfare materiel or explosives that
Glossary- 5
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