Lonnie Fallin - Factor Analysis Reveals Effects of Reducing Conditions on the Fate and Transport of RDX in Groundwater

Version 1

      Publication Details (including relevant citation   information):

      Morris, Michael W. and Fallin, Lonnie (2008) "Factor Analysis   Reveals Effects of Reducing Conditions on the Fate and Transport   of RDX in Groundwater," International Journal of Soil,   Sediment and Water: Vol. 1: Iss. 2, Article 1.


      Groundwater investigations conducted at the Massachusetts   Military Reservation (MMR) show the impact of historic activities   on the development of groundwater contaminant plumes emanating   from military ranges. Several of the plumes, located on the   southeastern side of the reservation, contain elevated   concentrations of hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX).   In most cases, these plumes show continuity from the source to   the leading edge, indicating that very little attenuation of RDX   is occurring in the aquifer. Interesting exceptions to this trend   are locations where plumes consisting of RDX and perchlorate   intercept part of the aquifer that was previously impacted by a   fuel spill; reducing conditions due to biological activity   resulted from this spill. RDX concentrations show a significant   positive correlation with both dissolved oxygen and   oxidation-reduction potential, and a significant negative   correlation with specific conductivity. The distribution of RDX   is more consistent upgradient from the oxygen depleted zone and   implies that RDX is degrading in the aquifer near the fuel spill.   A factor analysis yielded two geochemical (44 percent variability   explained) and two contaminant (30 percent variability explained)   factors. This suggests that the geochemical nature of the aquifer   is the primary source of groundwater parameter variability   determined by this investigation.

      Address (URL): http://scholarworks.umass.edu/intljssw/vol1/iss2/1