Located off Tyler Lane and Spring Valley Road on the Old Bridge Township border, the area of Burnt Fly Bog in Marlboro Township is listed as a Superfund clean-up site. It is a rural area covering approximately , most of it in Marlboro Township, Monmouth County, New Jersey. During the 1950s and early 1960s, many unlined lagoons were used for storage of waste oil. As a result, at least of the bog have been contaminated. In addition to the current contaminated area, the site still consists of: four lagoons; an approximately 13,000-cubic-yard mound of sludge; and an undetermined number of exposed and buried drums. The site is a ground water discharge area for the Englishtown Aquifer. In this bog, ground water, surface water, and air are contaminated by oil and various organic chemicals. Contaminants known to be present include ethylbenzene, methylene chloride, tetrachloroethylene, toluene, base neutral acids, metals, PAHs, PCBs, unknown liquid waste, and VOCs.