Reference Exposure Levels (RELs) for 1,4-Dichlorobenzene
The Office of Environmental Health Hazard Assessment (OEHHA) is announcing the availability of a draft document for review by the Scientific Review Panel on Toxic Air Contaminants (SRP). This draft summarizes the non-cancer toxicological data and presents the derivation of reference exposure levels (RELs), as part of the Air Toxics Hot Spots program. RELs are airborne concentrations of a chemical that are not anticipated to result in adverse non–cancer health effects for specified exposure durations in the general population, including sensitive subpopulations.
Public Comment Draft
The 45-day public comment period for the draft RELs for 1,4-Dichlorobenzene ended on January 13, 2025. During the comment period, OEHHA held two public workshops.
After the close of the public comment period, the document will be revised as appropriate by OEHHA, and peer reviewed by the state’s Scientific Review Panel on Toxic Air Contaminants. http://www.arb.ca.gov/srp/srp.htm.
Public Workshops
Public workshops were held in Northern and Southern California to provide the public with an opportunity to ask questions and provide public comment about the noncancer REL for 1,4-Dichlorobenzene.
Northern California – in person and virtual
December 16, 2024, 9:00 AM – 10:30 AM
Sierra Hearing Room, Cal EPA Building
1001 I Street, Sacramento, CA 95814
Public Workshop Presentation
Southern California – in person
January 7, 2025, 1:00 PM – 3:00 PM
Auditorium
Ronald Reagan State Building
300 S Spring St #2
Los Angeles, CA 90013
Public Comment Information
The public is strongly encouraged to submit written information via OEHHA’s website, rather than in paper form. Comments may be submitted electronically through the following link:
Hard-copy paper comments may be mailed, faxed, or hand-delivered to the address below:
Dr. Rima Woods
Chief, Air Toxicology and Risk Assessment Section
Office of Environmental Health Hazard Assessment
1001 I Street, 12th Floor
Sacramento, CA, 95814
E-mail: Rima.Woods@oehha.ca.gov
Fax: (916) 323-2265
Telephone: (916) 322-2136