Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Introduction to Nonpoint Source Pollution and Wetland Mitigation.
Author Baker, L. A. ;
CORP Author Minnesota Univ., St. Paul. Water Resources Research Center.;Corvallis Environmental Research Lab., OR.
Publisher c12 Sep 91
Year Published 1991
Report Number EPA/600/J-92/348;
Stock Number PB93-106953
Additional Subjects Water pollution ; Surface waters ; Estuaries ; Fertilizers ; Nitrogen ; Pesticides ; Concentration(Composition) ; Phosphorus ; Herbicides ; Chlorine organic compounds ; Ground water ; Metals ; Monitoring ; Trends ; Reduction ; Wetlands ; Nonpoint sources ; Eutrophication
Library Call Number Additional Info Location Last
NTIS  PB93-106953 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/08/1993
Collation 37p
Nonpoint source pollution (NPS) is the major cause of impairment of U.S. surface waters. Erosion from croplands has been declining but is not yet reflected in decreased sediment yield or phosphorus concentrations in the nation's rivers. Nitrogen pollution is of particular concern in eutophication of estuaries as a contaminant of groundwater, and as an acidifying agent in atmospheric deposition. Nitrogen fertilizer and emissions of nitrous oxides are major contributors to the problem. The outlook on pesticides is mixed: bans on organochlorine pesticides in the 1970s have resulted in decreasing concentrations in fish tissue; however, herbicides are now a problem for some surface and groundwater sources of drinking water, especially in the Upper Midwest.