WASHINGTON, Aug. 9 -- Three Rivers Waterkeeper, Pittsburgh, Pennsylvania, has submitted a public comment letter to the Pipeline and Hazardous Materials Safety Administration (PHMSA) urging the agency to prioritize water protection as it considers potential changes to the Hazardous Materials Regulations. The organization expresses concerns that recent executive orders promoting deregulation in the energy sector could compromise public safety and environmental standards. In its letter, the nonpro more ST