Rationale for the development of Ontario air standards for trimethylbenzenes: 1,2,3-trimethylbenzene 1,2,4-trimethylbenzene 1,3,5-trimethylbenzene
| HERO ID | 631238 |
|---|---|
| Year | 2006 |
| Title | Rationale for the development of Ontario air standards for trimethylbenzenes: 1,2,3-trimethylbenzene 1,2,4-trimethylbenzene 1,3,5-trimethylbenzene |
| Authoring Organization | Ontario Ministry of the Environment |
| Publisher Text | Standards Development Branch, Ontario Ministry of the Environment |
| City | Ontario, Canada |
| Abstract | The Ontario Ministry of the Environment (MOE) has identified the need to develop and/or update air quality standards for priority contaminants. The Ministry’s Standards Plan, which was released in October, 1996 and revised in November, 1999, identified candidate substances for which current air standards will be reviewed. Once all consultations have been completed, all substances will be incorporated into the Regulation as standards (as opposed to guidelines). 1,2,4-Trimethylbenzene (1,2,4-TMB) was identified as a high priority compound for review based on its pattern of use in Ontario and recent toxicological information that has been published. This document provides a review of scientific and technical information relevant to the setting of Ambient Air Quality Criteria (AAQC) and half-hour Point of Impingement (POI) standards for 1,2,4-TMB and other trimethylbenzene isomers. |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Is Qa | No |