Dumps, Triaxles, Quads, Trailers, Lowboys for Hauling, Equipment Moves & Snow Removal Duffield Hauling, Inc. has tandem dump trucks, triaxles and quad axles with operators for rental. Our primary areas of operation are Northern Virginia, Maryland and Washington, DC. We haul dirt, asphalt, stone, broken concrete, sand and salt. We also haul contaminated soils to remediation sites. We maintain ...