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Publication Abstract

1995 Quality Assurance Report: NADP/NTN Deposition Monitoring James, Kenni O.W., 1997  Illinois State Water Survey, Champaign, IL,  ISWS MP-185    Full Text Available

The National Atmospheric Deposition Program (NADP) was initiated in 1977 under the leadership of the State Agricultural Experiment Stations (SAES) to address the problem of atmospheric deposition and its effects on agricultural crops, forests, rangelands, surface waters, and other natural and cultural resources. In 1978, the first sites of the NADP's precipitation chemistry network were established to provide information about geographical patterns and temporal trends in the deposition of acidic chemicals and nutrients. Initially organized as Regional Project NC-141 by the North Central Region of the SAES, the NADP was endorsed by all four regions in 1982, at which time it became Interregional Project IR-7. A decade later, the SAES reclassified IR-7 as a National Research Support Project, NRSP-3.

In 1982, the federally supported National Acid Precipitation Assessment Program (NAPAP) was established to provide broadened support for research into the causes and effects of acid deposition. This program includes research, monitoring, and assessment activities that emphasize the timely development of a firm scientific basis for decision making. Because of its experience in designing, organizing, and operating a national-scale monitoring network, the NADP was asked to assume responsibility for coordinating the operation of the National Trends Network (NTN) of NAPAP. As the NADP and NTN had common siting criteria and operational procedures, and shared a common analytical laboratory, the networks were merged with the designation NADP/NTN. Many of the NTN sites are supported by the U.S. Geological Survey (USGS), which serves as the lead federal agency for deposition monitoring under NAPAP.

A number of federal agencies support NADP/NTN research and monitoring including: U.S. Geological Survey (USGS) - Water Resources Division; U.S. Geological Survey (USGS) - Biological Resources Division; Cooperative State Research, Education, and Extension Service (CSREES); U.S. Forest Service (USFS); National Park Service (NPS); Bureau of Land Management (BLM); National Oceanic and Atmospheric Administration (NOAA); Environmental Protection Agency; and U.S. Fish and Wildlife Service (USFWS). Additional support is provided by various other federal agencies, state agencies, universities, public utilities, and industry, as well as the SAES. The current network consists of approximately 200 sites.

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