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this method--risk assessment and air dispersion modeling--require expert guidance and specialized software. Results and their presentation. The results of this method are similar in many ways to the results of Method 4, Chapter 3. Refer to Step 4 of that method for guidance in the presentation of results. Assessment. Risk analysis is the most quantitative and detailed form of hazardous materials environmental justice assessment. As such, it can provide the most authoritative assessment of the effects of a project on the distribution of risks associated with exposure to hazardous materials. This method requires a high level of modeling expertise and extensive data input. Due to the complexity of the method, it should only be undertaken if a screening study has indicated that the amount or frequency of hazardous material transport is not evenly distributed between protected and nonprotected populations. RESOURCES 1) United States Environmental Protection Agency (U.S. EPA). 2003. The applicable Web site is This Web site provides information on LandView TM III (environmental, geographic and demographic statistics and graphics tool) as it relates to EPA environmental justice, risk- based corrective actions, hazardous materials regulations and brownfield programs. The Web site also provides links to U.S. Census Bureau and Right-to-Know Network Web sites discussing LandViewTM III. The new LandViewTM 5 is discussed at http://landview. Whereas LandViewTM 5 contains only information from Summary File 1, the forthcoming LandViewTM 6 will also contain selected Summary File 3 data. 2) Federal and state environmental database resources for assessing hazardous materials: U.S. Environmental Protection Agency (U.S. EPA), National Priorities List (NPL) (Superfund Sites), found at U.S. EPA, Comprehensive Environmental Response, Compensation, and Liability Act List (CERCLIS), found at U.S. EPA List of Facilities that Treat, Store, and/or Dispose of Hazardous Waste (RCRIS), found at U.S. EPA Sites with Previous Hazardous Materials Spills (ERNS), found at U.S. Department of Transportation, Research and Special Programs Administration, Office of Hazardous Materials Safety, Hazardous Materials Information System (HMIS), found at U.S. Department of Transportation, Federal Motor Carrier Safety Administration, Motor Carrier Management Information System (MCMIS), found at gov/factsfigs/mcmis/mcmiscatalog.htm. 117