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66 Guidebook for Conducting Local Hazardous Materials Commodity Flow Studies 6.3.7 Potential Consequences of Hazmat Releases The negative consequences of potential hazmat incidents are most often expressed in terms of the potential for human exposure. Consequences associated with potential incidents are most likely to occur among general populations, special populations, and mass congregations located in the hazard zone at the time of the incident. Consequences of hazmat exposures also can have great negative impacts for environmentally sensitive habitats or other areas (e.g., locations with historical or cultural significance). Software programs available from the U.S. EPA's CAMEO suite (including CAMEO, MARPLOT, or ALOHA) can be used to model consequences of poten- tial hazmat releases. Further information about this software suite may be found at http://www.epa. gov/oem/content/cameo/index.htm. 6.3.8 Hotspots Analysis Spatialtemporal analysis, commonly called hotspots analysis, identifies times and places where the co-location of people and hazardous materials needs special attention. With at least four crit- ical components of hazmat risk analysis (i.e., time, space, hazardous materials, and people/ fauna/flora) and virtually infinite possibilities of each, the possible outcomes can seem both com- plex and somewhat overwhelming. Appendix D.9, Use Hotspots Analysis, is provided as a resource to assist the project team with conducting a hotspots analysis. 6.4 Summarize Information It is essential that HMCFS information prepared by the project team is useful for emergency planning. HMCFS users must understand the HMCFS, be comfortable with it, and able to extract needed information. The HMCFS information will be used by the core team to make decisions. Information for the HMCFS core team should be summarized to identify the critical points that will be needed for decision making. Lists, tables, charts, and maps may be used by the project team to present the information. CPG 101 (2) suggests organizing hazard information in a matrix. A matrix provides a format by which risks can be compared and prioritized. This concept can be adapted for compiling Tips for Summarizing HMCFS Information FEMA's CPG 101 (2, p 3-18) suggests some basic rules for writing plans and proce- dures. Some of these rules can be applied to summaries of HMCFS information, including the following: Keep the language simple and clear by writing in plain English. Summarize impor- tant information with checklists and visual aids, such as maps and flowcharts. Avoid using jargon and minimize the use of acronyms. Use short sentences and active voice. Qualifiers and vague words only add confusion. Provide enough detail. . . . The amount of detail a plan should provide depends on the target audience and the amount of certainty about the situation. Plans written for a jurisdiction or organization with high staff turnover might require more detail.