Contamination in Fractured Rock Aquifers
Drilling operations at the NAWC
site (circa 2005). Samples of rock core were collected and were analyzed for concentrations of volatile organic compounds (VOCs) at about 50 various depths, providing a direct measure of the contaminant concentrations in the rock matrix.
-- from the Naval Air Warfare Center (NAWC) Research Site
Bibliography XXX Publications
Fractured-rock aquifers are widely distributed near land surface and
are highly susceptible to contamination from human activities. Researchers are developing an
improved understanding of the movement of water and contaminants in fractured-rock aquifers,
methods for characterization of field conditions, and modeling tools. Contaminant transport
and fate is fundamentally different in fractured rock than in unconsolidated (sand and
gravel) aquifers. Significantly more uncertainty exists as to the direction and rate of
contaminant migration, as well as the processes and factors that control chemical and
microbial transformations. At many contaminated sites across the Nation, remedial action is
delayed or stymied by the complexity of contaminated fractured-rock aquifers. Long-term
research on contamination in fractured-rock aquifers has been conducted at the
Program’s two field research sites:
Chlorinated Solvents in Fractured Sedimentary
Rock -- Naval Air Warfare Center (NAWC) Research Site, West Trenton, New Jersey
Multidisciplinary Characterization of
Contaminant Transport in Fractured Rock -- Mirror Lake, New Hampshire [Completed]
Other Program Fractured Rock Research
Program Science Feature Articles on Fractured Rock Research
- Porosity and pore size distribution in a sedimentary rock--Implications for the distribution of chlorinated solvents: Shapiro, A.M., Evans, C.E., and Hayes, E.C., 2017, Journal of Contaminant Hydrology, v. 203, p. 70-84, doi:10.1016/j.jconhyd.2017.06.006.
- An overview of geophysical technologies appropriate for characterization and monitoring at fractured-rock sites: Day-Lewis, F.D., Slater, L.D., Robinson, J., Johnson, C.D., Terry, N., and Werkema, D., 2017, Journal of Environmental Management, doi:10.1016/j.jenvman.2017.04.033 (In Press, Corrected Proof).
- Acetylene fuels TCE reductive dechlorination by defined Dehalococcoides/Pelobacter consortia: Mao, X., Oremland, R.S., Liu, T., Gushgari, S., Landers, A.A., Baesman, S.M., and Alvarez-Cohen, L., 2017, Environmental Science and Technology, v. 51, no. 4, p. 2366-2372, doi:10.1021/acs.est.6b05770.