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 public review summarizing the noncancer reference exposure levels (RELs) for 1,4-Dichlorobenzene, 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 1,4-Dichlorobenzene begins on November 29, 2024 and is scheduled to end on January 13, 2025. During the comment period, OEHHA will hold two public workshops. 

• Notice 
• Public review draft 

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 will be 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

https://video.calepa.ca.gov/#/

Southern California – in person
To be determined

Link to Public Comments

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:

• Comment Submissions – Reference Exposure Levels for 1,4-Dichlorobenzene

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

Link to Public Comments

• Comment Submissions - Reference Exposure Levels (RELs) for 1,4-Dichlorobenzene

Downloads

Air Toxics Hot Spots Notice of Public Comment Period and Workshops on a Draft Reference Exposure Levels for 1,4-Dichlorobenzene
Nov 29, 2024

1,4-Dichlorobenzene Reference Exposure Levels Technical Support Document for the Derivation of Noncancer REL Public Review DraftNov 29, 2024

Chemical Reference

• 1,4-Dichlorobenzene