- Excavation Contractor 2228 Engle Road Fallston, Maryland 21047 410-557-8100 fax 410-692-9530 Serving Maryland's Baltimore County, Harford County, Cecil County & Carroll County Complete Commercial & Residential Services, Septic Service, Septic System Installation, Septic Pumping, Conventional Septic, Sand Mound Septic, Septic Repairs, Holding Tanks, Drywells, Grease Traps, Excavation, Grading, ...www.eprestonjr.com