Low-Income Population - sdmp-00330135

DOE-HDBK-XXXX-2005

06/30/2005

National Ambient Air Quality Standards (NAAQS). The LAER is defined on a case-by-case

basis, according to the regulations found in 40 CFR 51.165. [Derived from 40 CFR 51.165]

106. LOW-INCOME POPULATION. Low-income populations, defined in terms of Bureau of the

Census annual statistical poverty levels (Current Population Reports, Series P-60 on Income

and Poverty), may consist of groups or individuals who live in geographic proximity to one

another or who are geographically dispersed or transient (such as migrant workers or Native

Americans), where either type of group experiences common conditions of environmental

exposure or effect. (See environmental justice and minority population.) [Derived from CEQ

EJ]

107. LOW-LEVEL RADIOACTIVE WASTE OR LOW-LEVEL WASTE (LLW). Radioactive

waste that is not high-level waste, transuranic waste, spent nuclear fuel, or by-product tailings

from processing of uranium or thorium ore. (See radioactive waste.)

Optional addition:

Low-level radioactive waste is generated in many physical and chemical forms and levels of

Note: If the document uses this term to mean only low-level waste that is subject to the AEA, it

may be appropriate to add "accelerator-produced waste" and "naturally occurring

radioactive material" to the list of exclusions.

[Derived from NWPA, DOE O 435.1, NRC glossary]

108. MAGNITUDE (OF AN EARTHQUAKE). A quantity characteristic of the total energy

released by an earthquake, as contrasted to "intensity," which describes its effects at a

particular place. Magnitude is determined by taking the common logarithm (base 10) of the

largest ground motion recorded on a seismograph during the arrival of a seismic wave type and

applying a standard correction factor for distance to the epicenter. Three common types of

magnitude are Richter (or local) (ML), P body wave (mb), and surface wave (Ms).

Additional magnitude scales, notably the moment magnitude (Mw), have been introduced to

increase uniformity in representation of earthquake size. Moment magnitude is defined as the

rigidity of the rock multiplied by the area of faulting multiplied by the amount of slip.

A one-unit increase in magnitude (for example, from magnitude 6 to magnitude 7) represents a

30-fold increase in the amount of energy released.

[See intensity (of an earthquake).]

[Derived from AGI 76, Bolt]

109. MAXIMALLY EXPOSED INDIVIDUAL (MEI). A hypothetical individual whose location

and habits result in the highest total radiological or chemical exposure (and thus dose) from a

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