Manager's Corner One year's incidents, mapped and symbolized by type, provide excellent benchmarks to analyze response effectiveness and identify regions where very high incident loads might overwhelm assigned resources. is established, Census 2000 block records provide typical family composition throughout the jurisdiction. Population summaries are performed at the census block level and compared to city- and districtwide estimates for validation. Hazards Hazard data often comes from various federal, state, and local sources. Typical hazard types might include  Commercial and industrial hazards  Cultural hazards  Natural and environmental hazards  Land use and land cover (existing and proposed)  Zoning (existing and proposed) Kent Fire maps and analyzes many sources of hazard data, including Federal Emergency Management Agency (FEMA) floodplain mapping, parcel-based occupancy data, EPA hazardous substance inventories, insurance service data, and site inspection notes. Earthquake, lahar (volcanic mudflows), terrain, slope failure, and other hazards come from U.S. Geological Survey, the Washington State Department of Natural Resources Geology and Earth Resources Division, and private studies. Hazardous inventories and substances on-site are mapped from EPA Tier II (chemical inventory) data, Superfund Amendments and Reauthorization Act (SARA) Title III material safety data sheets, and www.esri.com site inspections. The department protects a major interstate highway corridor, two major railroads, and the second largest warehouse facility on the West Coast of the United States. Hazardous substances that are being stored or transported in the county are monitored through shipping documents and on-site storage information. Kent Fire supports a geographically distributed and highly trained Hazmat response team. King County and Kent City land-use and zoning maps identify areas where hazardous occupancies often cluster. Historic Risk and Program Data For many emergency service agencies, the number one item on a special data list has been historic incident and response data. This information is essential for mapping response activity, measuring performance and risk factors, and assessing program development. Emergency service mappers geocode and analyze incident response data to understand program effectiveness, overload, and limitations. Incident-level data provides an incident location, incident type and severity, and time stamps that monitor the overall incident from call received to call complete. Apparatus-level records include time information for each responding unit including when it is notified, how long it is en route, time spent on the scene, time when the scene is released, and the time in service. Continued on page 44 ArcUser Fall 2010 43