Casey Resources, Inc. (CRI) works closely with State agencies under the Voluntary Cleanup Program (VCUP) to assist property owners in the application process and subsequent written and submitted VCUP proposal for Brownfield sites, in most cases following up with a written work plan and the management/oversight of the proposed cleanup under the VCUP.

Brownfields are abandoned, idled, or under-used industrial and commercial facilities where expansion or redevelopment is complicated by real or perceived environmental contaminations. In city planning, Brownfield land, or simply a Brownfield, is land previously used for industrial purposes, or certain commercial uses, that may be contaminated by low concentrations of hazardous waste or pollution and has the potential to be reused once it is cleaned up. Land that is more severely contaminated and has high concentrations of hazardous waste pollution, such as Superfund or hazardous waste sites, does not fall under the brownfield classification.

Generally, Brownfield sites exist in a town's industrial section on land containing abandoned factories or commercial buildings, or other previously polluting operations. Small Brownfields may also be found in many older residential neighborhoods. For example, many dry cleaning establishments or gas stations have produced high levels of subsurface contaminants during prior operations and the land they occupy might sit idle for decades as a Brownfield.

Many federal and state programs have been developed to assist developers interested in cleaning up Brownfield sites and restoring them to practical uses. Some states and localities have even spent considerable money assessing the contamination present on local brownfield sites to quantify the clean up costs in an effort to move the Brownfield redevelopment process forward.