Each year, the American Conference of Governmental Industrial Hygienists (ACGIH) publishes a list of substances for which they have set new or revised Threshold Limit Values (TLVs). A TLV is the airborne concentration of a chemical substance where it is believed that nearly all workers may be exposed over a working lifetime and experience no adverse health effects. TLVs may be expressed as an 8-hour time-weighted average (TWA), 15-minute short-term exposure limit (STEL) or ceiling limit.

Prior to the adoption of new or revised TLVs published by the ACGIH, WorkSafeBC reviews relevant data on health effects and the availability of validated sampling methods. WorkSafeBC also consults with stakeholders on potential implementation issues. WorkSafeBC’s existing B.C. Exposure Limits (ELs) continue to be in effect until the Board of Directors makes a decision on which new or revised ACGIH TLVs to adopt as B.C. ELs. See additional information on WorkSafeBC’s EL review process.

WorkSafeBC is requesting stakeholder feedback on the proposed ELs for 24 substances.

(1) WorkSafeBC is proposing new or revised B.C. ELs for the following substances:

(2) WorkSafeBC is proposing to retain the existing B.C. ELs for the following substances:

(3) For hazard communication purposes, WorkSafeBC has adopted a name change for the following substance:

Providing feedback

Feedback can be provided on line or via email, or mail as follows:

Feedback will be accepted until 4:30 p.m., Friday, August 14, 2020.

Please include the following information in your comments:

• Your name;
• Whether you are submitting on your own behalf or on behalf of an organization (if on behalf of an organization, please specify the name of the organization);
• Whether you are commenting from a worker’s perspective or an employer’s perspective;
• Your level of support for the adoption of the proposed new or revised B.C. ELs, retention of B.C. ELs, and B.C. EL withdrawal — whether you generally agree, are generally neutral, or generally disagree; and,
• The reasons for your level of support for the substances you are commenting on.

WorkSafeBC will send you an acknowledgement of receipt of your feedback.

Please be advised that stakeholders will not be contacted regarding their feedback unless clarification is needed.

Online feedback option

To provide online feedback please click and open the hyperlink for the proposed B.C. ELs. Once opened, please click on the yellow "Online Feedback" button to provide your feedback.

Publication and disclosure of personal information

Please note that all comments become part of the Policy, Regulation and Research Division’s database and may be published, including the identity of organizations and those participating on behalf of organizations. The identity of those who have participated on their own behalf will be kept confidential according to the provisions of the Freedom of Information and Protection of Privacy Act. Publication by WorkSafeBC does not mean WorkSafeBC endorses the view(s) of the person making the submission.