Patent ID: 7484322

Claim:
A mobile digging and backfill system for removing and collecting material above a buried utility, the system comprising: a. a mobile chassis having a front end, an opposite back end, a first side and an opposite second side; b. a collection tank mounted to said chassis for storing the material and water removed and collected from a location; c. a water pump mounted to said chassis that delivers a pressurized liquid flow against the material for loosening the material at the location; d. a vacuum pump connected to said collection tank that draws an air stream through said collection tank that carries the material and the fluid from the location into said collection tank; and e. at least one backfill reservoir movably mounted to said chassis between a first transporting position and a second offloading position, for carrying backfill for placement at the location, said reservoir having a releasable door positioned at one of said chassis back end, first side and second side, for allowing the backfill to be removed from said backfill reservoir.