Richard Johnson
Phone: 503 748-1193
Fax: 503 748-1464
Lab Phone: 503 748-1404
Website: Center for Groundwater Research
Current Appointments
Professor, Division of Environmental and Biomolecular Systems Director, Center for Groundwater Research
Education
B.S., Chemistry, University of Washington, 1973 M.S., Environmental Science, Oregon Graduate Center, 1981
Ph.D., Environmental Science, Oregon Graduate Center, 1985
Research Interests
Physical and chemical behavior of organic contaminants in the air, soil, and water; analytical organic chemistry; groundwater transport, fate, and modeling of contaminants in porous and fractured porous media.
Selected Publications
Krol, M. M.; Sleep, B. E.; Johnson, R. L. (2011) Impact of low-temperature electrical resistance heating on subsurface flow and transport. Water Resources Research, 47,
Krol, M. M.; Mumford, K. G.; Johnson, R. L.; Sleep, B. E. (2011) Modeling discrete gas bubble formation and mobilization during subsurface heating of contaminated zones. Adv. Water Resour., 34, 537-549. (DOI: 10.1016/j.advwatres.2011.01.010)
Johnson, R. L.; Clark, B. R.; Landon, M. K.; Kauffman, L. J.; Eberts, S. M. (2011) Modeling the potential impact of seasonal and inactive multi-aquifer wells on contaminant movement to public Water-Supply wells. J. Amer. Water Res. Assoc., 47, 588-596.
Sarathy, V.; Salter, A. J.; Nurmi, J. T.; O'Brien, J. G.; Johnson, R. L.; Tratnyek, P. G. (2010) Degradation of 1,2,3-Trichloropropane (TCP): Hydrolysis, elimination, and reduction by iron and zinc. Environ. Sci. Technol., 44, 787-793. (DOI: 10.1021/es902595j)
Brow, C. N.; Johnson, R. O. B.; Xu, M.; Johnson, R. L.; Simon, H. M. (2010) Effects of cryogenic preservation and storage on the molecular characteristics of microorganisms in sediments. Environ. Sci. Technol., 44, 8243-8247. (DOI: 10.1021/es101641y)
Johnson, R. L.; O'Brien, J. G.; Nurmi, J. T.; Tratnyek, P. G. (2009) Natural Organic Matter Enhanced Mobility of Nano Zerovalent Iron. Environ. Sci. Technol., 43, 5455-5460. (DOI: 10.1021/es900474f)
Johnson, R. L.; Tratnyek, P. G.; O'Brien, J. R. (2008) Persulfate persistence under thermal activation conditions. Environ. Sci. Technol., 42, 9350-9356. (DOI: 10.1021/es8019462)
Johnson, R. L.; Thoms, R. B.; O'Brien, J. R.; Nurmi, J. T.; Tratnyek, P. G. (2008) Mineral precipitation upgradient from a zero-valent iron permeable reactive barrier. Ground Water Monit. Rem., 28, 56-64. (DOI: 10.1111/j.1745-6592.2008.00203.x)
Johnson, R. L.; Thoms, R. B.; O'Brien Johnson, R.; Krug, T. (2008) Field evidence for flow reduction through a zero-valent iron permeable reactive barrier. Ground Water Monit. Rem, 28, 47-55.
Waldemer, R. H.; Tratnyek, P. G.; Johnson, R. L.; Nurmi, J. T. (2007) Oxidation of chlorinated ethenes by heat-activated persulfate: kinetics and products. Environ. Sci. Technol., 41, 1010-1015. (DOI: 10.1021/es062237m)
Johnson, R. L.; Simon, M. A. (2007) Evaluation of groundwater flow patterns around a dual-screened groundwater circulation well. J. Contam. Hydrol., 93, 188-202. (DOI: 10.1016/j.jconhyd.2007.02.003)
Da Silva, M. L. B.; Johnson, R. L.; Alvarez, P. J. J. (2007) Microbial characterization of groundwater undergoing treatment with a permeable reactive iron barrier. Environmental Engineering Science, 24, 1122-1127.
Johnson, R. L.; Tratnyek, P. G.; Miehr, R.; Thoms, R. B.; Bandstra, J. Z. (2005) Reduction of hydraulic conductivity and reactivity in zero-valent iron columns by oxygen and TNT. Ground Water Monit. Rem., 25, 129-136. (DOI: 10.1111/j.1745-6592.2005.0008.x)
Bandstra, J. Z.; Miehr, R.; Johnson, R. L.; Tratnyek, P. G. (2005) Reduction of 2,4,6-trinitrotoluene by iron metal: kinetic controls on product distributions in batch experiments. Environ. Sci. Technol., 39, 230-238. (DOI: 10.1021/es049129p)
Tomlinson, D. W.; Thomson, N. R.; Johnson, R. L.; Redman, J. D. (2003) Air distribution in the Borden aquifer during in situ air sparging. Journal of Contaminant Hydrology, 67, 113-132.
Johnson, R. L.; Thoms, R. B.; Zogorski, J. S. (2003) Effects of daily precipitation and evapotranspiration patterns on flow and VOC transport to groundwater along a watershed flow path. Environ. Sci. Technol., 37, 4944-4954. (DOI: 10.1021/es026252c)
Amerson, I.; Johnson, R. L. (2003) Natural gradient tracer test to evaluate natural attenuation of MTBE under anaerobic conditions. Ground Water Monit. Rem., 23, 54-61.
