The Dallas County Local Emergency Planning Committee (DCLEPC) is seeking to augment our July 2024 Hazardous Materials Commodity Flow Study by conducting a roadside field survey along key motor vehicle transportation corridors. The roadside field survey aims to observe, quantify, and document the movement of hazardous materials on these routes. The project will involve a review of the July 2024 Dallas County Commodity Flow Study to identify patterns of hazardous material transportation within the county. This information will help recommend four roadside locations for field data collection. The final selection of these locations will be made by the Dallas County Local Emergency Planning Committee (DCLEPC). The project will also include a thorough analysis of the collected data, an assessment of vulnerabilities, and the formulation of conclusions and recommendations. Project Objectives The DCLEPC objectives related to the Commodity Flow Study are: Increased Awareness Define Training Scenarios Enhance Emergency Planning Identify Equipment Needs Schedule Appropriate Resources Identify Hazmat Route Designations As envisioned, this project will include, as a minimum, completion of the following tasks: 1. Data Collection Develop a field data survey plan that outlines the selected locations, dates, times, and duration of the survey, as well as the primary targets for data collection. Determine the collection strategy using appropriate statistical methods to establish sample size and counting intervals. Collect field data, including the number of vehicles, types of vehicles, the packages in each shipment, the contents of the shipments that contain hazardous materials, the class or division of those hazardous materials, the UN/NA placard ID, and specific materials. 2. Analyze Data Using the newly collected data, identify hazmat flows by analyzing hazmat content information to determine the quantities and proportions of hazmat distributed according to spatial and temporal information. 3. Hot Spots Identify areas and facilities along major traffic routes that are at a higher risk of experiencing hazardous materials spills or releases. Assess geographical locations where such incidents could pose significant risks to the population. Evaluate the potential impact of a hazardous materials release on critical facilities along the traffic corridor. Additionally, analyze the effects of a spill or release on environmentally sensitive areas and bodies of water that serve as sources of drinking water. 4. Conclusions and Recommendations Formulate comprehensive recommendations that are grounded in the insights gathered from the recently collected and thoroughly analyzed data. Project Documentation Documentation at a minimum should include: Cover page, including title, data, jurisdictions covered, and authorship; List of entities involved the in HMCFS project, including HMCFS core team, HMCFS project team, key personnel, volunteers/data collectors, contractors, etc.; Table of contents and lists of figures and tables; Situation overview (e.g., an executive summary of HMCFS information) Main document o Purpose (HMCFS objectives); o Scope (jurisdiction, modes, and network segments that are included); o Background information o Methodology (overview of data collection methods, sampling, and precision); o HMCFS outcomes (text, matrices, lists, tables, charts, graphs, maps, etc.—for different materials classifications, modes, and network segments, as applicable); o Assumptions and limitations (e.g., an HMCFS is a snapshot of hazmat commodity flows in a community at specific times and locations—does the hazard analysis assume that those variations are consistent with other times and/or locations?); o Conclusions and recommendations, including identification of most frequent or greatest threats, needs for additional intelligence, etc.; o References, including all existing data sources, reports, statistics, and
