310 CMR 6.00: Ambient Air Quality Standards

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Allowable Threshold Concentrations (ATCs)

MassDEP toxicological information for airborne contaminants, based on non-cancer health endpoints. ATCs are roughly equivalent to U.S. EPA Reference Concentrations.
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Chemical References

Points to original sources of toxicity information for approximately 500 chemicals.
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Chemicals in Massachusetts Drinking Water, 2006 Standards & Guidelines

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Chromium VI

Evaluation of the Risk Assessment Methodologies Based on the Hexavalent Chromium [Cv VI] - Elicited Allergic Contact Dermatitis (ACD) in Sensitized Population and MADEP'S Recommendations
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Cyanide

Background Documentation for the Development of an "Available Cyanide" Benchmark Concentration
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Dioxins & Furans

1991 Dioxin Air Guideline
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Re-evaluation of the Toxicity Equivalency Factors for Dioxins and Dibenzofurans
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Excerpt from the Guidance for Disposal Site Risk Characterization
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Methyl t-Butyl Ether (MTBE)

Justification for making the MassDEP Guideline for MTBE in drinking water more stringent, August 1995
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Naphthalene

Recent changes to Naphthalene Toxicity Values
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Perchlorate

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Petroleum Hydrocarbons

See the list of VPH/EPH Publications
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Polycylic Aromatic Hydrocarbons (PAHs)

Excerpt from the Guidance for Disposal Site Risk Characterization
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Tetrachloroethylene

Documentation for the Inhalation Cancer Unit Risk Value for Tetrachloroethylene (Perchlorethylene)
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Emerging Contaminants Fact Sheet and Overview

Emerging contaminants are hazardous materials (chemical, microbial or radiological substances) or mixtures of interest that are characterized by: a perceived or real threat to human health, public safety or environment; no currently published health standard/guideline exists or it is evolving or being re-evaluated; there is insufficient or limited available toxicological information; or, a new source, pathway, or detection limit has been discovered. Emerging contaminants may be naturally occurring or manmade.
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Nanotechnology Workshop Proceedings

On November 15, 2007, representatives from academia, industry, environmental groups, insurers, attorneys, federal and state regulators gathered to attend a Massachusetts-sponsored workshop on the Safe Development of Nanotechnology in the Commonwealth. The workshop proceedings highlight the presentations by experts and discussion among participants.
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Pharmaceutical and Personals Care Products - FAQs

Pharmaceutical and Personal Care Products (PPCPs) include medicines, insect repellents, sunscreens, perfumes, soaps, fragrances, and lotions.
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Perchlorate

A chemical found in blasting agents, fireworks, military munitions and other manufacturing processes.
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Hazardous Household Products: Handling & Management

Essential information about more than 25 common materials and substances 
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Automotive Waste

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Checklist for a Hazard Free Home

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Green Living

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Massachusetts/Rhode Island Regional Center for Poison Control & Prevention

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National Institutes of Health Household Products Database

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