In 1990, on-site contaminants at "probable health concern levels" included lead, thallium, benzene, chloroform, chlordane, and polychlorinated biphenyls. The contaminants could easily drain out of the property, with part of the site built on easily draining sand from the original course of the Coffee Creek, and six drainage pipes drained directly into the nearby Eleven Mile Creek. Waste had also been released into the creek due to several ruptures of the containing clay berm in the past.
