Municipal Engineering

Public Utilities




Norman Cole Pollution Control Plant

Norman Cole Pollution Control Plant

Fairfax County, Virginia

Design and processing of a Minor Site Plan that included a 1,096 square foot addition to the existing bar screen building, the construction of a new 454 square foot methanol building, the construction of a new 1,950 square foot blower buildings the construction of a state-of-the-art Moving Bed Biofilm Reactor (MBBR) facility, and all supporting infrastructure at the existing wastewater treatment plant. The design considered impacts to ongoing plant operations to avoid disruptions while minimizing disturbance.

Mooney Treatment Facility

Mooney Treatment Facility

Prince William County, Virginia

RDA provided all site design, including grading plans, entrances, internal roadways, pumping stations, extension of sanitary sewer lines, etc, and the site plan submissions and coordination with the County to resolve Chesapeake Bay and stormwater management issues – RDA provided documentation to support a floodplain waiver and waiver of the Chesapeake Bay Resource Management Area (RMA) stormwater nutrient discharge limitations. RDA also prepared an environmental Assessment (EA) and assisted with the public meeting in order to obtain VDEQ approval of funds from the State Revolving Loan Account. RDA also provided wetland and RPA delineations, perennial flow determinations for three streams.

Arlington Utility Undergrounding

Arlington Utility Undergrounding

Arlington County, Virginia

RDA provided professional engineering/general consultation services to Arlington County for the planning, design, construction and relocation of dry utility systems.

Manassas (HQ)

11100 Endeavor Court
Suite 200
Manassas, VA 20109

Manassas (Satellite)

7655 Coppermine Drive
Manassas, VA 20109



927 Maple Grove Drive
Suite 105
Fredericksburg, VA 22407



4301 Dominion Boulevard
Suite 100
Glen Allen, VA 23060


Virginia Beach

272 Bendix Road
Suite 330
Virginia Beach, VA 23452



520 Lew Dewitt Blvd
Suite 301
Waynesboro, VA 22980