Low-Income Population - doe-hdbk-1188-20060133

DOE-HDBK-1188-2006

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 particular

source for all exposure routes (e.g., inhalation, ingestion, direct exposure). [Derived from NCRP 93]

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