By 1989, a government investigation had concluded that many of these materials were being improperly stored and handled, leading to the site being added to the National Priorities List for cleanup by the Environmental Protection Agency.
The first phase of 1,705 cubic meters of the Saltcrete waste stream was successfully transported, treated and disposed in less than eight weeks.
[3] Saltcrete is the result and technique of wastewater processing and was the second-largest mixed waste stream at RFETS requiring treatment and disposition.
The majority of wastewater from RFETS production processes is contained in large tanks and then is treated by precipitation, filtration, evaporation, and drying to result in a matrix referred to as "salts".
This sample selection was required to make sure that the formula developed would be sufficiently aggressive to stabilize the hazardous elements known to be existed.
In accordance with existing permit requirements, Envirocare submitted a copy of the Treatment Formula to the State of Utah, Division of Solid and Hazardous Waste.
Finally in 1997, Envirocare has won a $7 million contract to handle low-level mixed waste at the former Rocky Flats nuclear weapons plant.
Furthermore, standards for a processing facility which could be adjusted for a higher variation of feed materials and possibly have the ability to emit different byproduct waste forms such as liquid to solid, are also seemed to be integrated.
Collected layers between each line provide leak liquid management and leakage detection for the cell, while a foundation of engineered clay stabilizes the liner system.