NIOSH IDLH documentation It contains detailed information on Immediately Dangerous to Life or Health Concentrations (IDLH) values

SCAPA - PAC It contains links to the main Chemical exposure limit values (AEGL, ERPG, TEEL) used to determine Protective Action Criteria emergency planning of chemical release

Canadian Emergency Response Guidebook 2008 It is a guide to help identifying hazards of the materials involved in incidents and to protect people during the initial response phase of incidents.

NIOSH/OSHA/DOE Health Guidelines They are intended for reference only and deal with information concerning chemicals needed for conducting effective occupational safety and health programs

ATSDR - Medical Management Guidelines for Acute Chemical Exposures These MMGs are intended to help emergency department physicians and other emergency healthcare professionals who manage acute exposures resulting from chemical incident

PHMSA (USA) Emergency Procedures Ermengency response guidelines for firefighters, police, and other emergency services personnel who may be the first to arrive at the scene of a transportation incident involving a hazardous material