Make sure personnel are prepared to respond to emergencies safely and effectively with the 2020 NFPA 329. NFPA 329: Recommended Practice for Handling Releases of Flammable and Combustible Liquids and Gases outlines the appropriate methods for responding to fire, explosion, and human health hazards resulting from the release of a flammable, combustible, or otherwise hazardous liquid, gas, or vapor that may migrate to a subsurface structure. It incorporates provisions from NFPA 328: Recommended Practice for the Control of Flammable and Combustible Liquids and Gases in Manholes, Sewers, and Similar Underground Structures. Revisions to the 2020 edition include: * Updating of all referenced publications * Clarification for a grounding connection for air eductor used to remove vapors from enclosed spaces * New explanatory information in Chapter 9 regarding control of ignition sources