1. Posterity Group 7361 Calhoun Pl, Derwood, MD 20855 Coordinate: 39.10859,-77.15141 Phone: (240) 499-8999
2. International Waste Industries 15717 Crabbs Branch Way, Derwood, MD 20855 Coordinate: 39.11207,-77.15559 Phone: (301) 975-0050