Search Results for the EPA National Library Catalog

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Showing: Items 801 - 850
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Select Item Title Year Published
Nitrate-rich groundwaters of Australia 1983
Nitrates in groundwater 1997
Nitrogen and irrigation management to reduce return-flow pollution in the Columbia Basin / 1976
Nitrogen in the subsurface environment / 1975
Nonpoint source model calibration in Honey Creek Watershed / 1979
North Dakota geographic targeting system for groundwater monitoring / 1997
Nuclear techniques in groundwater pollution research : proceedings of an advisory group meeting / organized by the International Atomic Energy Agency. 1980
Numerical simulation of the movement of sulfate in ground water in southwestern Salt Lake Valley, Utah / 1996
Nutrient, bacterial, and virus control as related to ground-water contamination / 1977
OASIS : parameter estimation system for aquifer restoration models : user's manual version 2.0 / 1990
OASIS : parameter estimation system for aquifer restoration models : user's manual version 2.0 / 1990
Occurrence and distribution of enteric viruses in shallow ground water and factors affecting well vulnerability to microbiological contamination in Worcester and Wicomico Counties, Maryland / 2001
Occurrence and distribution of nitrate and selected pesticides in ground water in Missouri, 1986-94 / 1996
Occurrence and distribution of radium, gross alpha-particle activity and gross beta-particle activity in ground water in the Magothy Formation and Potomac Group aquifers, upper Chesapeake Bay area, Maryland 2000
Occurrence and distribution of radium, gross alpha-particle activity, and gross beta-particle activity in ground water in the Magothy Formation and Potomac Group aquifers, Upper Chesapeake Bay area, Maryland 2000
Occurrence and implications of methyl tert-butyl ether and gasoline hydrocarbons in ground water and source water in the United States and in drinking water in 12 Northeast and Mid-Atlantic states, 1993-2002 / 2004
Occurrence and implications of selected chlorinated solvents in ground water and source water in the United States and in drinking water in 12 Northeast and Mid-Atlantic States, 1993-2002 / 2006
Occurrence and status of volatile organic compounds in ground water from rural, untreated, self-supplied domestic wells in the United States, 1986-99 2002
Occurrence and status of volatile organic compounds in ground water from rural, untreated, self-supplied domestic wells in the United States, 1986-99 {electronic resource} / 2002
Occurrence of diatoms in lakeside wells in northern New Jersey as an indicator of the effect of surface water on ground-water quality / 2006
Occurrence of dissolved sodium in ground waters in basalts underlying the Columbia Plateau, Washington 1986
Occurrence of nitrate and pesticides in ground water beneath three agricultural land-use settings in the eastern San Joaquin Valley, California, 1993-1995 / 1998
Occurrence of nitrate, pesticides, and volatile organic compounds in the Kirkwood-Cohansey Aquifer system, southern New Jersey 1997
Occurrence of pesticides and nitrate in Nebraska's ground water / 1990
Occurrence of pesticides, nitrate, volatile organic compounds, and trace elements in ground water and streams, southeastern Missouri, 1986-87 1988
Occurrence of trihalomethanes in the nation's ground water and drinking-water supply wells, 1985-2002 2006
Occurrence of uranium and 222radon in glacial and bedrock aquifers in the northern United States, 1993-2003 / 2007
OGWDW employee handbook / 1997
Ohio nonpoint source management program : executive summary. 1988
ORD ground water research plan : strategy for 1991 and beyond. 1990
Oregon ground-water quality and its relation to hydrogeologic factors : a statistical approach / 1984
Organic and inorganic contaminants in shallow groundwater at six municipal landfills in North Dakota / 1992
Organic compounds entering ground water from a landfill / 1974
Organic sponges for cost-effective CVOC abatement : final report, September 1992 - April 1994 / 1994
Our endangered planet. Groundwater / 1991
Overview of groundwater remediation technologies for MTBE and TBA / 2005
Part II : water quality analysis, final draft / 2000
Paste backfill geochemistry : environmental effects of leaching and weathering : MEND Report 10.2 / 2006
PATRIOT : a methodology and decision support system for evaluating the leaching potential of pesticides / 1994
Pemaco superfund site. 2008
Pendleton Woolen Mill land application site ground water monitoring evaluation 1996
Pennsylvania minor discharger NPDES compliance audit 1983. 1983
Performance and analysis of aquifer tracer tests with implications for contaminant transport modeling / 1986
Performance evaluation at a long-term food processing land treatment site / 1990
Performance monitoring of MNA remedies for VOCs in ground water / 2004
Permeability and groundwater contaminant transport : a symposium, Philadelphia, Pa., 17-23 June 1979 / 1981
Permeable reactive barrier : sustainable groundwater remediation / 2014
Permeable reactive barrier technologies for contaminant remediation. 1998
Permeable reactive subsurface barriers for the interception and remediation of chlorinated hydrocarbon and chromium (VI) plumes in ground water : U.S. EPA remedial technology fact sheet. 1997
Permit policy question and answer quarterly report : groundwater protection standards. 1984
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