The Crawford Station former manufactured gas plant (MGP) site is located at 3500 South Pulaski Road in Chicago, Illinois. MGPs were industrial facilities that produced gas from coal, oil and other feedstocks. The processes used to produce the gas also produced waste and byproducts such as tars, purifier waste, oils, sludges and acidic waste. Disposal of waste and spills and leaks often resulted in contaminated soil and groundwater. Site cleanup and investigations are ongoing. The site is not listed on the National Priorities List (NPL) but is considered to be an NPL-caliber site and is being addressed through the Superfund Alternative Approach (SAA). In 1921, the Koppers Company of Pittsburgh and Peoples Gas entered into an agreement: Koppers built, financed and operated a by-product coke plant at the Crawford Station. Peoples Gas bought the gas and coke manufactured by the Koppers Company for distribution to its consumers. In 1928, Peoples Gas acquired the facility. The site was the largest Peoples Gas facility in the early years of the 20th century. Production was halted temporarily between 1958 and 1962 and permanently after 1963. The station was retired in 1965. Peoples Gas sold 146 acres of the property to First American Realty Company in 1966. The site is bounded on the south by the Chicago Sanitary and Ship Canal, on the north by the Chicago and Illinois Western Railroad, on the west by the Chicago and Western Indiana Belt Line Railroad, and to the east by Pulaski Rd. (formerly Crawford Ave.). The site is currently divided into 21 parcels with various owners.