Spill History • Tanker truck overturned January 8th, 2001 (Spill of 2200 Gallons of unleaded gasoline in a location in Southeast Iowa) • Gasoline spilled into ditch on north side of the town –Spill also entered culvert and flowed 300 feet east to the culvert outlet (see Fig 1)
At Site 1140MW (Figure 1), located at NAS Pensacola’s Outlying Landing Field (OLF) Bronson, a Contamination Assessment Report (CAR) and a CAR Addendum were completed in 1997 and 1998, respectively.
A spill of approximately 50,000 gallons of pure xylene occurred as a result of a train derailment in north central Georgia in 1988. The spill resulted in two separate xylene plumes in the groundwater. Heterogeneous layers of interbedded sands, silts, and clays underlie the site.
Groundwater treatment was implemented at the site in January 2005. Periodic groundwater monitoring was used to assess system performance and dissolved oxygen levels in treatment and monitoring wells. In addition, bacteria levels in groundwater were measured to evaluate biostimulation.