Fill Site 6B (FS6B) is located on
the Presidio’s Main Post. It is irregularly shaped and extends from Lincoln
Boulevard and Tomey Avenue to the south, Doyle Drive to the north, General
Kennedy Avenue to the east, and Halleck Street to the west. The site includes
Buildings 1027, 1028, 1029, 1030, and 1158 that are used for commercial and
residential purposes. The site also includes paved vehicle parking and driving
areas and landscaped open space.
FS6B contains debris from the 1975 demolition
of the former Letterman Army Medical Center and other nearby buildings.
the debris fill and soil contain metals, polycyclic aromatic hydrocarbons (PAHs),
pesticides, and petroleum hydrocarbons at concentrations that are safe under
current site conditions.
2013, the California Department of Toxic Substances Control
(DTSC) approved an environmental investigation called a Preliminary Endangerment
Assessment (PEA) and Land Use Control (LUC) for the site. The PEA is the
initial investigation of the site and determines if there has been a release of
hazardous substances that present a risk to human health or the environment.
The PEA for FS6B assesses the potential human health and ecological risks from
building debris in soil. It concludes that building debris in soils at FS6B do
not pose a risk to human health or the environment under current land use. To
ensure continued protection of human health and the environment, DTSC requires
a LUC with a soil management plan for future land use changes.
PEA for FS6B is available for review at the
103 Montgomery Street, Presidio and can be downloaded below.