Fire Station 3, Building 8076
Fire Station 3, Building 8076 is located in the northwestern portion of Webster Field Annex, approximately 200 feet east of St. Mary’s River. Constructed in 1968, Building 8076 is a one-story permanent structure encompassing approximately 2,600 square feet. The building currently serves as the Webster Field Fire Station and holds approximately 310 gallons of 3 percent AFFF. The start date for AFFF storage is unknown; although AFFF is stored in the building, there are no known releases of AFFF. This site was added to the planned SI activities after the scoping sessions based on a regulatory comment made by MDE on the Draft PA Report for Webster Field Annex. The comment (dated January 10, 2019) noted MDE concerns regarding AFFF storage tanks at Fire Station 3 (Building 8076) and the potential for a release to occur when filling the crash trucks with AFFF. Soil and groundwater samples were agreed upon by the NAS Patuxent River Tier 1 Partnering Team.
AFFF Crash Truck Maintenance Check Area
AFFF Crash Truck Maintenance Check Area is the location where the Webster Field Fire Department conducted daily and monthly checks of the AFFF spray equipment. Daily checks confirmed proper foam consistency, and monthly checks verified correct AFFF spray pattern setup using the crash truck equipment from Fire Station 3, Building 8076. The spray of AFFF would occur approximately 100 feet to 150 feet to the right and left from the “T” on the taxiway adjacent to the northwest runway at Webster Field Annex. The time period over which equipment functioning testing was conducted is unknown. During the monthly checks, AFFF was allowed to infiltrate into the ground and discharge to surrounding stormwater ditches and drains. An unknown amount of AFFF was released overall. Guidance for using NoFoam Kits in lieu of the AFFF spray checks has been available since the mid-2000s, and the crash truck at Webster Field Annex is currently tested monthly with water only at the Crash Truck Maintenance Check Area. Soil and groundwater samples were agreed upon by the NAS Patuxent River Tier I Partnering Team.
Munitions Response Site UXO-0001 Former Aerial Bombing Range
UXO-0001, also known as the Former Aerial Bombing Range, was used for air-to-ground, inert rocket, and practice bombing activities during the 1940s and 1950s. The 22-acre unexploded ordnance (UXO) site is located adjacent to and just south of the runways at Webster Field on the southern half of the facility. According to the Preliminary Assessment (PA) performed for Webster Field, the Former Aerial Bombing Range was used for air-to-ground, inert rocket, and practice bombing activities during the 1940s and 1950s (Tetra Tech NUS, 2010).
In September 2019, a Record of Decision (ROD) was issued for UXO-0001. The ROD selected a remedy of “Partial LUCs and Partial No Further Action” to achieve the Department of the Navy’s goal of partial unrestricted land use at UXO-0001. No Further Action was selected for the open areas in the north and southeast portions of the site (approximately 9.63 acres) and required engineering controls and institutional controls (ICs), otherwise known as land use controls, to be implemented the central wooded portion of the site (approximately 12.4 acres). The remedy is intended to address remaining explosive hazards and ensure that land use within the site boundaries remains the same. Currently, the Navy is in progress of installing site signs and performing annual site inspections.