fatalities and injuries, mitigate the consequences of incidents that occur, train and prepare first responders, and enhance safety. Office of Pipeline Safety The Office of Pipeline Safety regulates an expansive network of approximately 3.4 million miles of natural gas pipeline system in the United States and its hazardous liquid pipelines. This includes 229,000 miles of hazardous liquid pipelines, 302,000 miles of gas transmission pipelines, 2,284,000 miles of gas distribution mains and services, and 17,000 miles of gas-gathering pipelines. PHMSA’s pipeline safety program promotes the safe delivery of energy products to market in a manner that protects people, property, and the environment. The Office of Pipeline Safety is headquartered in Washington, D.C., with eight field offices located in West Trenton, NJ; Atlanta, GA; Kansas City, MO; Houston, TX; Lakewood, CO; Des Plaines, IL; Ontario, CA; and Anchorage, AK. PHMSA also operates a national training center and accident investigation office located in Oklahoma City, OK. Leadership Tristan Brown serves as the Deputy Administrator of PHMSA. The current leadership team includes: Past leadership includes Brigham McCown, first acting administrator July 1, 2005 until March 31, 2006 and first Deputy Administrator, July 1, 2005 until January 1, 2007. Thomas J. Barrett, first permanent Administrator from March 31, 2006 - June 1, 2007. Stacey Gerard, first Assistant Administrator/Chief Safety Officer, first acting Deputy Administrator until July 1, 2005. Krista Edwards, Chief Counsel in 2006, Deputy Administrator, acting Administrator in late 2007. Carl T. Johnson, Administrator from January 9, 2008 until 2009. Cynthia L. Quarterman, Administrator from November 16, 2009 - October 4, 2014 Timothy Butters, acting Administrator from October 4, 2014 - June 8, 2015 Marie Therese Dominguez, Administrator from October 7, 2015 until 2016 Howard "Skip" Elliott, Administrator from October 30, 2017 - January 20, 2021 See also List of North American natural gas pipelines List of pipeline accidents in the United States in the 21st century Weld monitoring, testing and analysis Robotic Non-Destructive Testing Intelligent pigging Emergency Response Guidebook Notes References External links Pipeline and Hazardous Materials Safety Administration in the Federal Register PHMSA Public Map Viewer - Application enables the user to view the National Pipeline Mapping System (NPMS) data one county at a time. The user may zoom in to a map scale of 1:24,000. Energy in the United States United States Department of Transportation agencies 2004 establishments in the United States Government agencies established in 2004 Oil pipelines in the