Times Beach, Missouri, a small town once known for its unpaved roads, became the site of a major environmental disaster in the early 1980s when it was discovered that waste oil sprayed for dust control was heavily contaminated with dioxins. This contamination, exacerbated by devastating floods in December 1982, led to a federal buyout, a massive hazardous waste cleanup under the Superfund program, and the eventual transformation of the town's land into Route 66 State Park. The incident highlighted the critical importance of monitoring industrial by-products and shaped future responses to hazardous waste sites nationwide.
During the early 1970s, waste oil was sprayed on Times Beach's unpaved roads to reduce dust. Residents were unaware that some of this oil contained dioxin, a highly toxic chemical by-product. In March 1982, the US Environmental Protection Agency (EPA) received records concerning dioxin contamination at several Missouri locations. Subsequent soil sampling and testing confirmed contamination in Times Beach later that year.