Eisenhower Avenue Connector Interchange. Major Transportation Facilities and Development Districts. Location of Enterprise Zone is indicated by dotted line. A decline in ridership during the second half of the year corresponded to a substantial decrease in Metrorail weekday riders using the Pentagon station. Most of the Washington metropolitan region, including Alexandria, is in non-attainment with federal air quality standards for carbon monoxide and ozone.
Motor vehicles are the primary source of air pollution in the region.
The Clean Air Act Amendments of 1990 require the region to meet the carbon monoxide standard by 1995 and the ozone standard by 1999. Oxygenated gasoline is sold to motorists throughout the region from November to February to reduce carbon monoxide emissions. To meet the ozone standard, Alexandria has been working with other local jurisdictions through the Metropolitan Washington Air Quality Committee on a regional air quality plan. Virginia submitted a plan to EPA in November 1994 calling for the installation of gasoline vapor recovery hoses at service stations, high tech motor vehicle inspection and maintenance programs, and the sale of reformulated gasoline, which began in January. Achieving the ozone standard by 1999 will likely require additional controls on motor vehicle emissions.