Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Airshed and Watersheds 3: A Shared Resources Workshop on the Significance of Ammonia to Coastal and Estuarine Areas. Held in Dewey Beach, Delaware on November 15-16, 2000.
CORP Author Environmental Protection Agency, Annapolis, MD. Chesapeake Bay Program. ;National Oceanic and Atmospheric Administration, Silver Spring, MD. Air Resources Lab. ;Mid-Atlantic Regional Air Management Association, Harrisburg, PA.
Publisher Nov 2001
Year Published 2001
Stock Number PB2002-104413
Additional Subjects Regional airsheds ; Watersheds ; Ammonia ; Meetings ; Nitrogen ; Air pollution effects ; Emissions ; Coastal waters ; Estuarines ; Aquatic ecosystems ; Sediments ; Ground water ; Environmental transport ; Nitrogen oxides ; Clean Air Acts ; Pollution regultions ; Atmospheric chemistry ; Environmental issues ; Air quality ; Chesapeake Bay ; Environmental impacts ;
Library Call Number Additional Info Location Last
NTIS  PB2002-104413 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 10/23/2002
Collation CD-ROM
Emissions of ammonia, the airborne transport of ammonia and its fate were the focus of discussion at the third 'Shared Resources' Airsheds and Watersheds workshop, held November 15-16, 2000 in Dewey Beach, Delaware. Two previous workshops addressed the regional impacts of atmospheric nitrogen deposition, but largely from the standpoint of nitrogen oxide (NO-x) emissions-less attention was given to ammonia emissions. Scientific studies now indicate that ammonia emissions may result in a significant and growing form of nitrogen input to terrestrial and aquatic ecosystems. Airborne nitrogen compounds in wet and dry deposition, along with nitrogen from fertilizers, sewage, and industrial discharges, are a source of nutrients to receiving waters via surface water runoff, ground water flow and direct inputs. Current estimates are that atmospheric nitrogen deposition can contribute from 10 to over 40% of the 'new' nitrogen enrichment of coastal and estuarine waters. Since ammonia is often a preferred form of nitrogen for biological activity, its increasing availability could cause fundamental changes in aquatic algae communities. Additionally, air quality experts recognize that ammonia plays an important role in the formation of fine particulate matter, which can affect human health and degrade visibility. The need for managing ammonia emissions is demonstrated in the Netherlands where the environmental impacts are clearly visible.