Abstract: A portable worker safety frame provides many of the benefits of a loading dock while enhancing worker safety. In one implementation, the safety frame provides a walking surface of adjustable height that may be placed adjacent to an arbitrary work surface of a transportation vehicle. The safety frame can provide a walking platform that has a similar length as the cargo bed itself, yet is portable by such conventional means as the forks of a lift truck. The portable worker safety frame also provides an overhead safety rail to which each worker may attach a safety harness cord.

Abstract: Exemplary systems and methods for treating contaminated water are described. In one instance a method supplies metal salt reagents to a moving media filter in the presence of contaminated water. The method also introduces a waste stream resulting from the moving media filter upstream of the moving media filter effective to lower an average contaminant concentration of effluent water from the moving media filter.

Abstract: Exemplary systems and techniques for treating contaminated water are described. In one instance a plant or system includes a membrane filtration mechanism operable to receive an influent water stream containing a contaminant and to separate at least a first portion of the contaminant from a resulting first effluent water stream. The system also includes a reactive filtration mechanism operable to receive the first effluent water stream and to remove a waste stream containing a second portion of the contaminant to produce a resultant second effluent stream.

Abstract: Exemplary systems and methods relating to washboxes are described.