Naval Security Station — Additions, Renovations and Modernization
Project Details
Owner: Department of the Navy
Contract Amount: $18,653,607
Date of Award: January 1998
Date of Completion: June 1999
Architect: Ewing, Cole, Cherry, and Brott, Philadelphia, PA

In 1941 the U.S. Department of Navy purchased the Mt. Vernon School and converted the numerous multi-brick buildings into the Naval Security Station.
Grunley's construction contract called for the complete renovation of eight structures on the campus, ranging in size from 12,000 GSF to 50,000 GSF. Three of the structures were occupied during the renovation process. Environmental and energy conservation issues were addressed in the design and construction.
The scope of work included:
- A new central chiller plant and cooling tower for the eight structures;
- A complete electrical upgrade and distribution system (including telecommunications conduits, lighting and fire alarms); and
- Mechanical improvements including complete HVAC replacement and new control systems.
Also, renovations included upgrading all areas to comply with the ADA, specifically constructing two new elevator towers. Grunley Construction performed a hazardous material abatement program including asbestos, PCBs, and lead-based paint in all areas of selective demolition. Demolition work was performed in occupied buildings during off-hours and adjacent to occupied areas during normal work hours. Structural upgrades included supplemental floor support systems and modifications to accommodate new additions and installations.
A number of tenant-generated design changes during the course of the project were incorporated into the scope. As these occurred, we adjusted our staffing assignments and worked overtime so that the project schedule would not be extended. This effort accommodated the Navy's needs and allowed occupant relocation into the newly renovated spaces in a timely manner.