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User Guide for Commodity Flow Survey: Expanded HAZMAT Supplement
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2025-04-01
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Series: Commodity Flow Survey (CFS)
[PDF-620.49 KB]
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Edition:Report, (09/06/2019-03/30/2024)
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Abstract:The Expanded Hazardous Materials Supplement (EHM) is a survey sponsored by PHMSA’s Office of Hazardous Materials Safety (OHMS) and conducted by the U.S. Census Bureau (Census) as part of the 2022 Commodity Flow Survey (CFS). PHMSA sponsored the survey to collect new data and generate new statistics about businesses that ship hazardous materials (HAZMAT) in the United States, focusing on DOT-regulated packaging. The new data and statistics are valuable to inform agency decision making about the safety of HAZMAT transportation. The EHM can answer high-level questions about HAZMAT shipping in the U.S. as well as more technical, detailed questions specific to geography, commodities, packaging type, and other key variables. This document is meant to guide users through the EHM, describing the scope, data variables, and table-by-table contents.
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