Press Release

ACGIH® Announces Change to the ACGIH® TLV®/BEI® Development Process



Cincinnati, Ohio — January 31, 2008 — ACGIH® announced today an important change to its TLV®/BEI® Development Process.

The change applies to how comments are to be submitted during the NIC and NIE Comment Period. The below italicized submission procedure is requested to permit ACGIH® to more efficiently and productively review comments.

When submitting comments, ACGIH® prefers that the submission be limited to 10 pages in length, including an executive summary. The submission may include appendices of citable material not included as part of the 10-page limit. It would be very beneficial to structure comments as follows:

  1. Executive Summary – Provide an executive summary with a limit of 250 words.
  2. List of Recommendations/Actions – Identify, in a vertical list, specific recommendations/actions that are being requested.
  3. Rationale – Provide specific rationale to justify each recommendation/action requested.
  4. Citable Material – Provide citable material to substantiate the rationale.
Citable material is data that are available in the public domain or for which we have received written authorization to use from the owner. For unpublished data/studies, it is important for this authorization to accompany the submission and it must grant ACGIH® permission to use, cite and release the data. Please refer to our website at for instructions on how to complete this Permission to Use statement or to request a sample Permission to Use statement from ACGIH®.

Please note that, in keeping with the ACGIH® TLV®/BEI® Development Process, ACGIH® welcomes comments year round regarding all substances. The comment period for a NIC draft Documentation and its respective TLV(s)®, notation(s), or BEI(s)® is limited to a firm six-month period, running from February 1 to July 31 of each year. Because of the time required to properly review, evaluate, and consider comments for the fall meetings, any comments received after the deadline of July 31, 2008 will not be considered in this year's deliberations. All comments received after July 31 will be fully considered next year.

ACGIH® recommends that all TLV® and BEI® users read the Statement of Position Regarding the TLVs® and BEIs®, which outlines the proper usage of TLVs® and BEIs®. The Statement of Position can be found in the TLV®/BEI® Resources section of the ACGIH® website ( In addition to the Statement of Position, visitors to this site will find other useful information on TLVs® and BEIs®, including the following:

ACGIH® is a member-based organization that advances occupational and environmental health. ACGIH® is one of the industry's leading publications resources, with approximately 400 titles relative to occupational and environmental health and safety, including the renowned TLVs® and BEIs®. For more information, visit the ACGIH® website at or call our Customer Service Representatives at 513-742-2020.

Amy B. Bloomhuff, Esq., CAE
Director of Operations