On July 31, 2018, the Pipeline and Hazardous Materials Safety Administration (PHMSA or the Agency) published an advance notice of proposed rulemaking (ANPRM) asking for public comment on whether long standing class location requirements should be modified for gas pipelines. The class location concept pre-dates Federal regulation of gas transmission pipelines and was an early method of differentiating areas and risks along natural gas pipelines based on the potential consequences of a hypothetical pipeline failure. The current regulations require operators to reduce pressure, replace pipe, or conduct hydrostatic pressure testing in response to class location changes as population increases or encroaches on areas with existing pipelines. PHMSA is considering whether other alternatives to upgrades and pressure reduction should be available. Comments must be submitted on or before October 1, 2018.