Toxicological Advisory Committee



Prepared for

State of Vermont

Agency of Natural Resources


February, 1998


Table of Contents

I. Executive Summary 1
II. Review of Hazardous Ambient Air Standards 7
III. Measurement of Hazardous Air Contaminants in Ambient Air 19
IV. Priority Compounds 27
V. Management Options 56
VI. Risk Issues 58
VII. Future Actions 63
Appendix A Category I - Algorithm and Tables
Appendix B Category II and Category III Tables
Appendix C Air Monitoring Data - Tables
Appendix D Research Status Report - Mercury Deposition and Effects in the Lake Champlain Basin
Appendix E The Toxicological Advisory Committee


List of Acronyms

ACGIH - American Conference of Governmental Industrial Hygienists

AEGL - Acute Exposure Guideline Level

Agency - Vermont Agency of Natural Resources

Category I - A contaminant that is known or suspected to be a carcinogen.

Category II - A contaminant that is a noncarcinogen with potential/systemic effects due to long term exposure.

Category III - A contaminant that is a noncarcinogen considered to have primarily short term irritant effects.

CPF - Cancer Potency Factor

CPFi - Inhalation Cancer Potency Factor

CPFo- Oral Cancer Potency Factor

Committee - Toxicological Advisory Committee

HAAS - Hazardous Ambient Air Standard

HEAST - Health Effects Summary Tables, US EPA

IARC - International Agency for Research on Cancer

IRIS - Integrated Risk Information System database, US EPA

MDL - Method Detection Limit

NCI - National Cancer Institute

NIOSH - National Institute for Occupational Safety and Health

NTP - National Toxicological Program

OSHA - United States Department of Labor Occupational Safety and Health Administration

PAH - Polynuclear Aromatic Hydrocarbons

PCB - Polychlorinated Biphenyl

PCDD/PCDF - Polychlorinated Dibenzo-P-Dioxins/Furans

PEL - Permissible Exposure Limit, derived by OSHA

REL - Recommended Exposure Limit, derived by NIOSH

RfC - Inhalation Reference Concentration

TLV - Threshold Limit Value, derived by ACGIH

US EPA - United States Environmental Protection Agency

VOC - Volatile Organic Compound


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