The California Office of Environmental Health Hazard Assessment (OEHHA) issued its amended rule relating to green chemistry and the identification of hazardous traits. We reviewed the original OEHHA rule in December, 2010, here. Health and Safety Code section 25252 requires DTSC to evaluate and prioritize chemicals by developing criteria that include, but are not limited to, traits, characteristics, and endpoints, developed by OEHHA, for the Toxics Information Clearinghouse established under Health and Safety Code section 25256.1

The amended regulations, which took into account numerous comments from industry and working groups, will now be open for comment for 45 days until September 12, 2011. The rulemaking would add “Chapter 54: Green Chemistry Hazard Traits” to Title 22 of the California Code of Regulations.

A number of amendments and additions were made to the original rulemaking. In “Section 69401.1, Hazard Trait Framework,” OEHHA amended the definition of environmental endpoints and hazard traits. The amended definition now reads “an environmental endpoint for a specific hazard trait is a measured or otherwise observed adverse environmental effects in ecological systems, or in components of ecological systems, or in non-human organisms within ecological systems that indicate the presence of the hazard trait.” The amended definition for a hazard trait now reads, “hazard traits are properties of chemicals that fall into broad categories of toxicological, environmental, exposure potential and physical hazards that may contribute to adverse effects in exposed humans, domestic animals, wildlife, or in ecological communities, populations or ecosystems.”

In addition to the two above amendments to the rulemaking there were many others. Those that were made due to public comment can be found here. Included among them is the addition of Neurodevelopmental Toxicity as a separate hazard trait from neurotoxicity. This created a whole new section, 69403.11. Also a key addition to the rulemaking is “Article 7: Additional Relevant Data.” This article adds Exposure-Response Relationship and Physicochemical properties, which are viewed as two areas that will help further “evaluate the risks posed by chemical hazards.”

OEHHA is currently seeking comments, which may be submitted through September 12, 2011.