1. Potomac Energy Holdings 6408 Auth Rd, Suitland, MD 20746 Coordinate: 38.81234,-76.89581 Phone: (301) 423-0709
2. Potomac Energy Holdings 5120 Auth Rd, Suitland, MD 20746 Coordinate: 38.8224,-76.9187 Phone: (301) 899-2531