The development of a portable washdown/decontamination system is critical for the Department of Defense and specifically the Marine Corps to comply with federal and international regulations on how military equipment must be washed down or decontaminated prior to being transported back to the United States. The objective of this research is to develop and test a prototype portable washdown/decontamination environmental containment pad for use by the Department of Defense and non-military users. In Phase I, the feasibility of designing a filtration and pumping system, which effectively filters the rinse water so it could be recycled, was demonstrated. Phase II will involve further design work and development and testing of a prototype portable washdown/decontamination environmental containment system. Phase II will involve modification of the DOD washdown and containment system to meet the needs of a variety of private sector customers.