Search Results for the EPA National Library Catalog

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Select Item Title Year Published
15N-tracer and other laboratory studies of nitrogen remineralization in sediments and waters from Narragansett Bay, Rhode Island / 1982
A decision support framework to facilitate nitrogen load reductions in Long Island Sound (LIS) watershed / 2006
A field study to compare performance of stainless steel research monitoring wells with existing on-farm drinking water wells in measuring pesticide and nitrate concentrations / 1998
A field study to compare performance of stainless steel research monitoring wells with existing on-farm drinking water wells in measuring pesticide and nitrate concentrations / 1998
A model of seasonal changes in total nitrogen concentration in the Lake Wingra water column; Lake Wingra site. 1973
A study of precision and accuracy of laboratories and methods of analysis of ammonia nitrogen in Lake Michigan waters / 1967
A study of temporal and spatial variation in nitrogen concentrations in a tallgrass prairie stream / 1985
Algal nutrient availability and limitation in Lake Ontario during IFYGL : Part II. Nitrogen available in Lake Ontario tributary water samples and urban runoff from Madison, Wisconsin / 1977
Chemical nutrients in Lake George : a final technical report for Union Carbide subcontract no.3639 for the Eastern Deciduous Forest Biome, IBP, Lake George site / 1972
Chesapeake Bay total maximum daily load for nitrogen, phosphorus and sediment. 2010
Coastal communications : Development of nitrogen loading-response models for Northeast U.S. estuaries. 2002
Development of a pilot plant to demonstrate removal of carbonaceous, nitrogenous, and phosphorus materials from anaerobic digester supernatant and related process streams / 1970
Distribution and variability of nitrogen and phosphorus in the alluvial, High Plains, Rush Springs, and Blaine aquifers in western Oklahoma 1994
Distribution of ammonia nitrogen in the lower York River, Virginia : Spring, 1961. 1961
Distribution of nitrate and related nitrogen species in the unsaturated zone, Redlands and vicinity, San Bernardino County, California 1979
Effect of nitrification on corrosion in the distribution system / 2010
Estimates of sediment denitrification and its influence on the fate of nitrogen in Chesapeake Bay / 1987
Estimates of total nitrogen, total phosphorus, and total suspended solids loadings to Tampa Bay, Florida 1994
Estimation of total nitrogen and phosphorus in New England streams using spatially referenced regression models / 2004
Fate of nitrogen in shallow streams : focus on nitrification 1983
Flow phase distribution of nitrogen and phosphorus in the Potomac River system 1986
Formation and significance of N-chloro compounds in water supplies / 1980
Freshwater and saline loads of dissolved inorganic nitrogen to Hood Canal and Lynch Cove, western Washington 2006
Ground water and soil nitrate one year after cultivation in Hailstone Basin near Rapelje, Montana 1977
Ground-water discharge and base-flow nitrate loads of nontidal streams, and their relation to a hydrogeomorphic classification of the Chesapeake Bay watershed, Middle Atlantic coast / 1998
Ground-water vulnerability to nitrate contamination at multiple thresholds in the Mid-Atlantic Region using spatial probability models / 2005
Ground-water vulnerability to nitrate contamination at multiple thresholds in the Mid-Atlantic Region using spatial probability models / 2005
Ground-water vulnerability to nitrate contamination in the Mid-Atlantic Region / 2005
Health hazards from nitrates in drinking-water report on a WHO meeting. 1985
Hydrogeologic foundations in support of ecosystem restoration : base-flow loadings of nitrate in mid-Atlantic agricultural watersheds / 1999
In situ nitrogen dynamics within an estuarine embayment / 1969
Lake Erie nutrient control : effectiveness regarding assessment in eastern basin / 1980
Major sources of nitrogen input and loss in the upper Snake River Basin, Idaho and western Wyoming, 1990 1996
Manual for measuring dissolved oxygen and nitrogen gas concentration in water with the Van-Slyke-Neill apparatus 1973
Method 1686 : nitrate/nitrite-N in water and biosolids by manual colorimetry. 2001
Method 1687 : total Kjeldahl nitrogen in water and biosolids by automated colorimetry with preliminary distillation/digestion. 2001
Method 1688 : total Kjeldahl nitrogen in water and biosolids by automated colorimetry with preliminary semi-automatic digestion. 2001
Method 245.7 : mercury in water by cold vapor atomic fluorescence spectrometry : draft. 2001
Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory : determination of ammonium plus organic nitrogen by a Kjeldahl digestion method and an automated photometric finish that includes digest cleanup by gas diffusion / 2000
Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory determination of triazine and other nitrogen-containing compounds by gas chromatography with nitrogen phosphorus detectors / 1994
National lake survey program : highlights. 1974
New process for treating wastewater : nitrogen control / 0
Nitrate and drinking water. 1988
Nitrate and phosphorus runoff losses from small watersheds in Great Lakes Basin / 1978
Nitrate and phosphorus runoff losses from small watersheds in Great Lakes Basin / 1978
Nitrate contamination of subsurface waters in an urbanizing area final report / 1982
Nitrate flux from ground to surface waters adjacent to the Neuse River Waste Water Treatment Plant 2006
Nitrate in ground water and surface water in a residential subdivision, West Windsor Township, Mercer County, New Jersey, 1993 1996
Nitrate reduction in the Armstrong Creek Basin 1996
Nitrate removal from water at the water-mud interface in wetlands / 1976
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