NRG Energy; Pepco Energy; Virginia Power; Westvaco Corporation; Nu Star Energy; Shirley Contracting; John C. Grimberg Co., Inc.; Riverton Corporation; Indian Head Naval Station; Norfolk Southern Railroad; University of Maryland; State of Maryland Toll Facility; Quantico Marine Base; Birchwood Power; Highway and Safety Services; MKIII; Corps of Engineers, Washington Aqueduct; Freyssinet; Waste Water Facilities in: City of Alexandria; Water Intake Facilities in: Towns of Purcellville and Warrenton, City of Rockville, Fairfax, Fauquier and Stafford Counties

 

States of Maryland and Virginia plus the District of Columbia; Norfolk Southern Railroad; Modjeski & Masters; Flippo Construction; Michael J. Baker, Inc.; Greeley & Hansen; Welch & Rushe; Jackson & Tull; University of Maryland; John C. Grimberg Co.; ST Services; NuStar Energy; Buchart Horn, Dann Marine Towing; Hayes, Seay, Mattern & Mattern, Inc.; HTMB; James G. Davis Construction; Mueser Rutledge Consulting Engineers; Washington Gas; Whitman, Requardt & Assoc., LLP; South Riding Town Homeowners Association

 

CSX Transportation; DC Water & Sewer; Robinson Terminal; Dominion Lands; Potomac Riverboat Co.; ST Services; Porter Brothers; Harborview Properties; Montgomery/Kontgias; Entertainment Cruises; Harborside Yacht Club; Garcete Construction; VDOT; VA Dominion Power; The Peterson Companies; Private homeowners in the Washington Metropolitan Area

 

U.S. Coast Guard Station, Baltimore; Northern Virginia Regional Park Authority; Leesylvania State Park; Lake Jackson Dam, Prince William, Co.; National Park Service; Occoquan Marina; Port of Baltimore; Solomons Island Research Facility, University of Maryland; Freyssinet, Inc.; Lane Construction; National Harbor Marina; White Line Construction; Indian Head Naval Station; Regan National Airport; VDOT; The Peterson Companies; State of Maryland, Dept. of Natural Resources; U.S. Army, Ft. Belvoir

 

Fauquier and Frederick Counties; Corps of Engineers; Occoquan Harbor Marina; Department of the Interior; NASA; Robinson Terminal; Northern Virginia Regional Park Authority; Indian Head Naval Station; Washington Metropolitan Airports Authority; Hollowing Point Home Owners; Reston Association; Mansion House Yacht Club