OPS safety jurisdiction over pipelines covers more than 3,000 gathering, transmission, and distribution operators as well as some 52,000 master meter and liquefied natural gas (LNG) operators who own and/or operate approximately 1.6 million miles of gas pipelines, in addition to over 200 operators and an estimated 155,000 miles of hazardous liquid pipelines. OPS currently has approximately 70 employees: half work at Headquarters in Washington, DC, and the other half work in the five OPS regional offices located in Washington, DC; Atlanta, GA; Kansas City, MO; Houston, TX; and Lakewood, CO. These employees work within the following programs to carry out the mandated regulatory and enforcement responsibilities of the Office of Pipeline Safety: