| Business | Phone |
| Dirt Concepts Germantown 20874 | (301) 972-2835 |
| Northup Consultants Inc Germantown 20874 | (301) 428-3314 |
| Hakes Contracting Inc 10901 Watkins Rd, Germantown 20876 | (301) 972-6800 |
| Hungerford Brothers Excavating 17515 Black Rock Rd, Germantown 20874 | (301) 972-1083 |