US EPA

91432 

Technical Report 

EPA Report 

Response of surface water chemistry to the Clean Air Act Amendments of 1990 

U.S. Environmental Protection Agency :: U.S. EPA 

2003 

Yes 

U.S. Environmental Protection Agency, Office of Research and Development, National Health and Environmental Effects Research Laboratory 

Research Triangle Park, NC 

EPA 620/R-03/001 

English 

http://nepis.epa.gov/Exe/ZyPURL.cgi?Dockey=30003YXE.txt 

uses data from 091594 Responses of Maine surface waters to the Clean Air Act Amendments of 1990

Title IV of the 1990 Clean Air Act Amendments (CAAA) set target reductions for sulfur and nitrogen emissions from industrial sources as a means of reducing the acidity in deposition. One of the intended effects of the reductions was to decrease the acidity of low alkalinity waters and thereby improve their biological condition. The purpose of this report is to assess recent changes in surface water chemistry in the northern and eastern U.S., in response to changes in deposition. The regions covered in this report are New England (sites in Maine, New Hampshire, Vermont and Massachusetts), the Adirondack Mountains of New York, the Northern Appalachian Plateau (New York, Pennsylvania and West Virginia), the Ridge and Blue Ridge provinces of Virginia, and the Upper Midwest (Wisconsin and Michigan). The data covered in this report are from 1990 through 2000, the period since the last major science review by the National Acidic Precipitation Assessment Program (NAPAP).