Record Display for the EPA National Library Catalog


Main Title Mercury maps : a quantitative spatial link between air deposition and fish tissue : peer reviewed final report /
Author Cocca, Paul.
CORP Author Environmental Protection Agency, Washington, DC. Office of Water.
Publisher U.S. EPA Office of Water, Standards and Health Protection Division,
Year Published 2000
Report Number EPA 823-R-01-009
Stock Number PB2002-104957
Subjects Atmospheric mercury--Mathematical models ; Fish as food--Contamination--Mathematical models ; Environmental mapping
Additional Subjects Fishes ; Mercury ; Maps ; Tissues(Biology) ; Metals ; Links ; Models ; Peer reviews ; Water pollution monitoring ; Watersheds ; Concentrations(Compositions) ; Air deposition rates
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
NTIS  PB2002-104957 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 1 v. (various pagings) : maps : col. ; 28 cm.
Mercury Maps is a tool that relates changes in mercury air deposition rates to changes in mercury fish tissue concentrations, on a national scale. The tool utilizes a reduced form of accepted mercury fate and transport models applied to watersheds in which air deposition is the sole significant source. The Mercury Maps model states that for long-term steady state conditions, reductions in fish tissue concentrations are expected to track linearly with reductions in air deposition watershed loads. The model utilized in this project is a reduced form of the IEM-2M and MCM models used in the Mercury Study Report to Congress (MSRC) (US EPA, 1997b), whereby the equations of these models are reduced to steady state and consolidated into a single equation relating the ratio of current/future air deposition rates to current/future fish tissue concentrations. Mercury Maps is designed to work only with watersheds in which air deposition is the sole significant source of mercury. A key step in the project then is to identify, and eliminate from the analysis, watersheds in which mercury sources other than air deposition, such as gold mines and chlor-alkali facilities, are present and contribute loads that are significant relative to the air deposition load to that watershed.
"EPA-823-R-01-009" -- t.p. "9/10/01." References : pp. 18-21.