Immediately Dangerous to Life or Health (IDLH) Values

The development of Immediately Dangerous to Life or Health (IDLH) values has been a priority of the National Institute for Occupational Safety and Health (NIOSH) of the Centers for Disease Control and Prevention (CDC) since 1974. The primary objective of this Current Intelligence Bulletin (CIB) is to improve the scientific rationale and methodology behind the derivation of the IDLH values. The published version of this CIB is accessible via the NIOSH website at the following link: /niosh/docs/2014-100/

To view related dockets see Docket 156-A, Docket 156-B, and Docket 156-C.

Final Document and Responses to Reviewers’ Comments

Notice of availability of guidance document – FR Notice [PDF – 68 KB]

Final Document – NIOSH Current Intelligence Bulletin (CIB) 66: Derivation of Immediately Dangerous to Life or Health (IDLH) Values [PDF – 2.34 MB]

NIOSH Responses to External Peer Reviewers’ Comments [PDF – 570 KB]

NIOSH Response to Summarized Stakeholders’ (Public) Comments [PDF – 645 kB]

Material Under Consideration

NIOSH DRAFT Current Intelligence Bulletin (CIB): Derivation of Immediately Dangerous to Life or Health (IDLH) Values [PDF – 4,605 KB]

Notice: 76FR4115; 1/24/11 [PDF – 160 KB]

Reviews

Submission to the Docket from William Finegan (Bensalem EMS); 2/9/11 [PDF – 913 KB]

Submission to the Docket from George Rusch (Private person); 2/17/11 [PDF – 1,569 KB]

Submission to the Docket from Ernest Falke (EPA); 3/1/11 [PDF – 7,132 KB]

Submission to the Docket from John Resta (Department of the Army); 3/9/11 [PDF – 6,851 KB]

Submission to the Docket from Jim Holler (ATSDR/CDC); 3/14/11 [PDF – 1,183 KB]

Submission to the Docket from John Morawetz (ICWUC Center for Worker Health & Safety Education); 3/21/11 [PDF – 2,697 KB]

Submission to the Docket from Peer Reviewer #1; 4/6/11 [PDF – 3,737 KB]

Submission to the Docket from Peer Reviewer #1; 9/6/11 [PDF – 1,901 KB]

Submission to the Docket from Peer Reviewer #2; 11/15/11 [PDF – 2,932 KB]