Mitigation - doe-hdbk-1188-20060135

DOE-HDBK-1188-2006

where either type of group experiences common conditions of environmental exposure or effect. (See

environmental justice and low-income population.) [Derived from CEQ EJ ]

115. MITIGATION. Mitigation includes:

(1) avoiding an impact altogether by not taking a certain action or parts of an action;

(2) minimizing impacts by limiting the degree or magnitude of an action and its implementation;

(3) rectifying an impact by repairing, rehabilitating, or restoring the affected environment;

(4) reducing or eliminating the impact over time by preservation and maintenance operations during the

life of an action; or

(5) compensating for an impact by replacing or providing substitute resources or environments.

[40 CFR 1508.20]

116. MIXED-OXIDE (MOX) FUEL. Reactor fuel made with a physical blend of different fissionable

materials, such as uranium dioxide (UO2) and plutonium dioxide (PuO2).

117. MIXED WASTE. Waste that contains both hazardous waste, as defined under the Resource

Conservation and Recovery Act, and source, special nuclear, or by-product material subject to the

Atomic Energy Act.[Derived from FFCA]

118. MODIFIED MERCALLI INTENSITY SCALE. The Modified Mercalli Intensity Scale is a

standard of relative measurement of earthquake intensity, developed to fit construction conditions in

most of the United States. It is a 12-step scale, with values from I (not felt except by a very few

people) to XII (damage total). A Modified Mercalli Intensity is a numerical value on the Modified

Mercalli Scale. [See intensity (of an earthquake).]

Note: If this definition is listed, "int ensity (of an earthquake)" must also be defined.

[Derived from AGI 76; Bolt; 10 CFR 100, App A.]

119. NATIONAL AMBIENT AIR QUALITY STANDARDS (NAAQS). Standards defining the

highest allowable levels of certain pollutants in the ambient air (i.e., the outdoor air to which the public

has access). Because the Environmental Protection Agency must establish the criteria for setting these

standards, the regulated pollutants are called criteria pollutants. Criteria pollutants include sulfur

dioxide, nitrogen dioxide, carbon monoxide, ozone, lead, and two size classes of particulate matter,

less than 10 micrometers (0.0004 inch) in diameter, and less than 2.5 micrometers (0.0001 inch) in

diameter. Primary standards are established to protect public health; secondary standards are

established to protect public welfare (e.g., visibility, crops, animals, buildings). (See criteria pollutant.)

[Derived from EPA Terms, 40 CFR 50]

120. NATIONAL EMISSIONS STANDARDS FOR HAZARDOUS AIR POLLUTANTS

(NESHAPS). Emissions standards set by the Environmental Protection Agency for air pollutants

which are not covered by National Ambient Air Quality Standards (NAAQS) and which may, at

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