Location and Description: The site is located seven miles
northwest of Casper in Natrona County, Wyoming. The property is now owned by
Natrona County and operated as the Natrona County International Airport (NCIA).
Casper Air Force Base is generally surrounded by vacant land used primarily for
agriculture. The area between the former Casper AFB and the city of Casper
along U.S. Highway 20/26 includes light industrial, commercial, residential, and
ranchland operations. The airport itself includes asphalt-covered ground, a modern
terminal building, and hangar structures. Many former Casper AFB buildings still exist
and are leased to occupants for light industrial, commercial, and residential use.
Problem and Response: Perform site characterization and risk screening
activities to determine the presence and general extent of potential soil, shallow
groundwater, and down gradient surface water/sediment contamination associated with
past military operations. The goal is to evaluate the potential need for further site
characterization or remedial action. Conduct a surface and subsurface investigation of
the area around the historic landfill to confirm the presence, and assess the general
nature and extent, of previously detected contamination of elevated metals and organic
constituents in soil and groundwater.
Activities for 2015: Field work for two areas of concern has been completed and
expanded site inspection and remedial
investigation reports are on schedule to be
finished by June 2015.
Proposed Activities for 2016: If necessary, additional site characterizations will
be undertaken to perform a remedial action effort.
Issues and Other Information: WDEQ is advocating for a remedial action if
results from the remedial investigation indicate contamination exceeds the maximum
contaminant levels. The biggest challenge will be to satisfy WDEQ and EPA concerns
regarding the possible contaminated groundwater.