APPENDIX CACRONYMS, ABBREVIATIONS, AND SYMBOLS

ACGIH

American Conference of Governmental Industrial Hygienists

ACOEM

American College of Occupational and Environmental Medicine

ADI

acceptable daily intake

ADME

absorption, distribution, metabolism, and excretion

AED

atomic emission detection

AFID

alkali flame ionization detector

AFOSH

Air Force Office of Safety and Health

ALT

alanine aminotransferase

AML

acute myeloid leukemia

AOAC

Association of Official Analytical Chemists

AOEC

Association of Occupational and Environmental Clinics

AP

alkaline phosphatase

APHA

American Public Health Association

AST

aspartate aminotransferase

atm

atmosphere

ATSDR

Agency for Toxic Substances and Disease Registry

AWQC

Ambient Water Quality Criteria

BAT

best available technology

BCF

bioconcentration factor

BEI

Biological Exposure Index

BMD/C

benchmark dose or benchmark concentration

BMDX

dose that produces a X% change in response rate of an adverse effect

BMDLX

95% lower confidence limit on the BMDX

BMDS

Benchmark Dose Software

BMR

benchmark response

BSC

Board of Scientific Counselors

C

centigrade

CAA

Clean Air Act

CAG

Cancer Assessment Group of the U.S. Environmental Protection Agency

CAS

Chemical Abstract Services

CDC

Centers for Disease Control and Prevention

CEL

cancer effect level

CELDS

Computer-Environmental Legislative Data System

CERCLA

Comprehensive Environmental Response, Compensation, and Liability Act

CFR

Code of Federal Regulations

Ci

curie

CI

confidence interval

CL

ceiling limit value

CLP

Contract Laboratory Program

cm

centimeter

CML

chronic myeloid leukemia

CPSC

Consumer Products Safety Commission

CWA

Clean Water Act

DHEW

Department of Health, Education, and Welfare

DHHS

Department of Health and Human Services

DNA

deoxyribonucleic acid

DOD

Department of Defense

DOE

Department of Energy

DOL

Department of Labor

DOT

Department of Transportation

DOT/UN/

Department of Transportation/United Nations/

   NA/IMDG

   North America/Intergovernmental Maritime Dangerous Goods Code

DWEL

drinking water exposure level

ECD

electron capture detection

ECG/EKG

electrocardiogram

EEG

electroencephalogram

EEGL

Emergency Exposure Guidance Level

EPA

Environmental Protection Agency

F

Fahrenheit

F1

first-filial generation

FAO

Food and Agricultural Organization of the United Nations

FDA

Food and Drug Administration

FEMA

Federal Emergency Management Agency

FIFRA

Federal Insecticide, Fungicide, and Rodenticide Act

FPD

flame photometric detection

fpm

feet per minute

FR

Federal Register

FSH

follicle stimulating hormone

g

gram

GC

gas chromatography

gd

gestational day

GLC

gas liquid chromatography

GPC

gel permeation chromatography

HPLC

high-performance liquid chromatography

HRGC

high resolution gas chromatography

HSDB

Hazardous Substance Data Bank

IARC

International Agency for Research on Cancer

IDLH

immediately dangerous to life and health

ILO

International Labor Organization

IRIS

Integrated Risk Information System

Kd

adsorption ratio

kg

kilogram

kkg

metric ton

Koc

organic carbon partition coefficient

Kow

octanol-water partition coefficient

L

liter

LC

liquid chromatography

LC50

lethal concentration, 50% kill

LCLo

lethal concentration, low

LD50

lethal dose, 50% kill

LDLo

lethal dose, low

LDH

lactic dehydrogenase

LH

luteinizing hormone

LOAEL

lowest-observed-adverse-effect level

LSE

Levels of Significant Exposure

LT50

lethal time, 50% kill

m

meter

MA

trans,trans-muconic acid

MAL

maximum allowable level

mCi

millicurie

MCL

maximum contaminant level

MCLG

maximum contaminant level goal

MF

modifying factor

MFO

mixed function oxidase

mg

milligram

mL

milliliter

mm

millimeter

mmHg

millimeters of mercury

mmol

millimole

mppcf

millions of particles per cubic foot

MRL

Minimal Risk Level

MS

mass spectrometry

NAAQS

National Ambient Air Quality Standard

NAS

National Academy of Science

NATICH

National Air Toxics Information Clearinghouse

NATO

North Atlantic Treaty Organization

NCE

normochromatic erythrocytes

NCEH

National Center for Environmental Health

NCI

National Cancer Institute

ND

not detected

NFPA

National Fire Protection Association

ng

nanogram

NHANES

National Health and Nutrition Examination Survey

NIEHS

National Institute of Environmental Health Sciences

NIOSH

National Institute for Occupational Safety and Health

NIOSHTIC

NIOSH's Computerized Information Retrieval System

NLM

National Library of Medicine

nm

nanometer

nmol

nanomole

NOAEL

no-observed-adverse-effect level

NOES

National Occupational Exposure Survey

NOHS

National Occupational Hazard Survey

NPD

nitrogen phosphorus detection

NPDES

National Pollutant Discharge Elimination System

NPL

National Priorities List

NR

not reported

NRC

National Research Council

NS

not specified

NSPS

New Source Performance Standards

NTIS

National Technical Information Service

NTP

National Toxicology Program

ODW

Office of Drinking Water, EPA

OERR

Office of Emergency and Remedial Response, EPA

OHM/TADS

Oil and Hazardous Materials/Technical Assistance Data System

OPP

Office of Pesticide Programs, EPA

OPPT

Office of Pollution Prevention and Toxics, EPA

OPPTS

Office of Prevention, Pesticides and Toxic Substances, EPA

OR

odds ratio

OSHA

Occupational Safety and Health Administration

OSW

Office of Solid Waste, EPA

OTS

Office of Toxic Substances

OW

Office of Water

OWRS

Office of Water Regulations and Standards, EPA

PAH

polycyclic aromatic hydrocarbon

PBPD

physiologically based pharmacodynamic

PBPK

physiologically based pharmacokinetic

PCE

polychromatic erythrocytes

PEL

permissible exposure limit pg picogram

PHS

Public Health Service

PID

photo ionization detector

pmol

picomole PMR proportionate mortality ratio

ppb

parts per billion

ppm

parts per million

ppt

parts per trillion

PSNS

pretreatment standards for new sources

RBC

red blood cell

REL

recommended exposure level/limit

RfC

reference concentration

RfD

reference dose

RNA

ribonucleic acid

RQ

reportable quantity

RTECS

Registry of Toxic Effects of Chemical Substances

SARA

Superfund Amendments and Reauthorization Act

SCE

sister chromatid exchange

SGOT

serum glutamic oxaloacetic transaminase

SGPT

serum glutamic pyruvic transaminase

SIC

standard industrial classification

SIM

selected ion monitoring

SMCL

secondary maximum contaminant level

SMR

standardized mortality ratio

SNARL

suggested no adverse response level

SPEGL

Short-Term Public Emergency Guidance Level

STEL

short term exposure limit

STORET

Storage and Retrieval

TD50

toxic dose, 50% specific toxic effect

TLV

threshold limit value

TOC

total organic carbon

TPQ

threshold planning quantity

TRI

Toxics Release Inventory

TSCA

Toxic Substances Control Act

TWA

time-weighted average

UF

uncertainty factor

U.S.

United States

USDA

United States Department of Agriculture

USGS

United States Geological Survey

VOC

volatile organic compound

WBC

white blood cell

WHO

World Health Organization

>

greater than

greater than or equal to

=

equal to

<

less than

less than or equal to

%

percent

α

alpha

β

beta

γ

gamma

δ

delta

µm

micrometer

µg

microgram

q1*

cancer slope factor

negative

+

positive

(+)

weakly positive result

(−)

weakly negative result