Fairfax County, Virginia - The Park Authority's RECenters make fun and fitness easy. When did the City of Fairfax implement EMS billing?Ambulance billing began on February 1, 2008. Inova's flagship location is Inova Fairfax Medical Campus, a 928-bed medical center serving Northern Virginia, the Washington DC metro area and beyond. There are several ways to send payment for your bill, via mail or online. Your payment options. Human Resources Questions. Learn about our staff, values, policies and more. Registration. For those new to the district, changing schools or registering for unique school programs. ERFC is a Defined Benefit Retirement Plan that supplements the primary benefits you'll earn from the Virginia Retirement System (VRS) and Social Security.