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Connecticut's Dioxin Ambient Air Quality Standard
Author(s) -
Rao Hari V.,
Brown David R.
Publication year - 1990
Publication title -
risk analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.972
H-Index - 130
eISSN - 1539-6924
pISSN - 0272-4332
DOI - 10.1111/j.1539-6924.1990.tb00544.x
Subject(s) - air quality index , environmental science , environmental health , risk assessment , health risk assessment , particulates , inhalation exposure , agency (philosophy) , inhalation , health risk , medicine , meteorology , computer science , chemistry , geography , philosophy , epistemology , computer security , organic chemistry , anatomy
Connecticut is the first state in the country to have adopted an ambient air quality standard for dioxins at 1 pg/m 3 , 2,3,7,8‐TCDD equivalents, as annual average. This paper describes the scientific basis and the methodology used by the State Department of Health Services (the risk assessment agency) in assisting the Department of Enviromental Protection (the risk management agency) to establish a health‐based dioxin standard. This standard protects the public health from the aggregate effect of all sources of dioxin emissions in the vapor and particulate phases. The risk assessment methodology included: a limit on total daily dioxin exposure from all media and sources based on reproductive effects; a multimedia nonsource‐specific exposure assessment; an apportionment by media of the health‐based limit (including background dosing rate); an evaluation of inhalation bioavailability and cancer risk based on a calculation of a range of upperbound cancer risk estimates using different potency, bioavailability, and particle phase assumptions.