Appendix C

Acronyms and Abbreviations

APXS

alpha-proton-x-ray spectrometer (experiment on Mars Pathfinder)

ARR

acceptable risk range (for toxic metals)

COT

Committee on Toxicology (NRC)

EPA

Environmental Protection Agency

EVA

extravehicular activity

GCR

galactic cosmic radiation

IRIS

Integrated Risk Information System (EPA)

ISRU

in situ resource utilization

JPL

Jet Propulsion Laboratory (NASA)

MEPAG

Mars Exploration Program/Payload Analysis Group

NAAQS

National Ambient Air Quality Standard (EPA)

NASA

National Aeronautics and Space Administration

NIOSH

National Institute for Occupational Safety and Health

NRC

National Research Council

OSHA

Occupational Safety and Health Administration

PM

particulate matter

ppb

parts per billion

ppm

parts per million

RfC

reference concentration

SMAC

spacecraft maximum allowable concentration

SNC

from Mars having landed on Earth (with reference to a meteorite)

SPE

solar particle event

ZMBR

zone of minimal biologic risk



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Safe on Mars: Precursor Measurements Necessary to Support Human Operations on the Martian Surface Appendix C Acronyms and Abbreviations APXS alpha-proton-x-ray spectrometer (experiment on Mars Pathfinder) ARR acceptable risk range (for toxic metals) COT Committee on Toxicology (NRC) EPA Environmental Protection Agency EVA extravehicular activity GCR galactic cosmic radiation IRIS Integrated Risk Information System (EPA) ISRU in situ resource utilization JPL Jet Propulsion Laboratory (NASA) MEPAG Mars Exploration Program/Payload Analysis Group NAAQS National Ambient Air Quality Standard (EPA) NASA National Aeronautics and Space Administration NIOSH National Institute for Occupational Safety and Health NRC National Research Council OSHA Occupational Safety and Health Administration PM particulate matter ppb parts per billion ppm parts per million RfC reference concentration SMAC spacecraft maximum allowable concentration SNC from Mars having landed on Earth (with reference to a meteorite) SPE solar particle event ZMBR zone of minimal biologic risk

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