The ERG also provides guidance regarding recommended evacuation distances, if applicable, in the Green Section. The first section, with white page (uncolored) borders, provides the following:  The second section, with yellow page borders, references the material in order of its assigned 4-digit ID number/UN/NA number (which is often placarded with the other hazardous materials placards) and identifies the appropriate guide number to reference in the Orange Section). Items highlighted in green in this section will have evacuation distances included in the Green Section. The third section, with blue page borders, references the material in alphabetical order of its name and identifies the appropriate guide number to reference in the Orange Section). Items highlighted in green in this section will also have evacuation distances included in the Green Section. The fourth section, with orange page borders, includes the actual response guides. Each of the 62 guides provides safety recommendations and directions on how to proceed during the initial response phase (first thirty minutes) of the incident. It includes "health" and "fire or explosion" potential hazard information (with the more dangerous hazard listed first). For example, "the material gives off irritating vapors, easily ignited by heat, reactive with water"; "highly toxic, may be fatal if inhaled, swallowed or absorbed through skin"; etc. Next this section includes information for responders on appropriate protective clothing and possible evacuation information for either spill or fire is given. It also includes information on fighting fires (example, do not apply water to sodium), warnings for spills or leaks, and special directions for first aid (example, not to give mouth-to-mouth resuscitation if the materials are toxic). In the event of an unknown material, Guide #111 should be followed until more information becomes available. The fifth section, with green page borders, suggests initial evacuation or shelter in place distances (protective action distances) for spills of materials that are Toxic-by-Inhalation (TIH). These distances vary based on the size of the spill (small or large) and whether the incident occurs during the day or at night. Only materials that were highlighted in green in the Yellow and Blue Sections are included in the Green Section. This section also includes information regarding toxic gases that are produced when certain materials are spilled in water (as identified previously in this section). Finally, this section includes some very specific evacuation details for six common materials. The sixth section, with white page (uncolored) borders, provides the following:   Editions of the ERG:   Other links