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RECORD NUMBER: 230 OF 289

OLS Field Name OLS Field Data
Main Title Sources of Metal Loads to the Alamosa River and Estimation of Seasonal and Annual Metal Loads for the Alamosa River Basin, Colorado, 1995-97.
Author Ortiz, R. ; Edelmann, P. ; Ferguson, S. ; Stogner, R. ;
CORP Author Geological Survey, Denver, CO. Water Resources Div.
Publisher 2002
Year Published 2002
Report Number USGS-WRI-02-4128;
Stock Number PB2002-109068
Additional Subjects Tracer techniques ; Water sampling ; Metals ; Data collection ; Data analysis ; Contamination ; Metal loads ; Alamosa River Basin ; Water chemistry ; Mine wastes ; Quantitative analysis ; Loading ; Colorado ; Exposure ; Source areas ; Seasonal estimates ; Wightman Fork(Colorado)
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB2002-109068 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 60p
Abstract
Metal contamination in the upper Alamosa River Basin has occurred for decades from the Summitville Mine site, from other smaller mines, and from natural, metal-enriched acidic drainage in the basin. In 1995, the need to quantify contamination from various source areas in the basin and to quantify the spatial, seasonal, and annual metal loads in the basin was identified. Data collection occurred from 1995 through 1997 at numerous sites to address data gaps. Metal loads were calculated and the percentages of metal load contributions from tributaries to three risk exposure areas were determined. Additionally, a modified time-interval method was used to estimate seasonal and annual metal loads in the Alamosa River and Wightman Fork.