Patent ID: 6948881

Claim:
An injection vessel to inject a liquid amendment into contaminated sediment, the injection vessel comprising: a floating platform; a propulsion system affixed to the floating platform, the propulsion system configured and arranged to provide locomotive power and to enable the floating platform to maneuver; an injection assembly comprising: a supply apparatus configured and arranged to hold the liquid amendment; a metering pump having an output and an input, the input coupled to the supply apparatus, the metering pump configured and arranged to receive the liquid amendment from the supply apparatus and to provide a predetermined volume of the liquid amendment at the output; at least one injector assembly having an output and an input, the input coupled to the output of the metering pump, the injector assembly configured and arranged to be moveable from a first position to a second position and when moved to the second position to penetrate the sediment such that the output is below the surface of the sediment to provide a fluid pathway from the metering pump to the output of the syringe to inject the liquid amendment into the sediment; and a control system coupled to the propulsion system to provide propulsion and maneuvering commands thereto, the control system further coupled to the injection assembly to control the movement of the at least one injector assembly and to control the volume output of the metering pump, the control system further comprising injection commands to lower the at least one injector assembly to a lowered position, and to dispense a predetermined amount of liquid amendment through the injector assembly into the sediment while the injector assembly is maintained in the lowered position.