Natural Background Soil Metals Concentrations in Washington State PDF Download
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Author: Charles San Juan
Publisher:
ISBN:
Category : Hazardous substances
Languages : en
Pages :
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Book Description
Author: Charles San Juan
Publisher:
ISBN:
Category : Hazardous substances
Languages : en
Pages :
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Book Description
Author: Kenneth C. Ames
Publisher:
ISBN:
Category : Metals
Languages : en
Pages : 118
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Category : King County (Wash.)
Languages : en
Pages : 114
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Author: Kenneth C. Ames
Publisher:
ISBN:
Category : Clark County (Wash.)
Languages : en
Pages : 144
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Author: Edmund A. Prych
Publisher:
ISBN:
Category : King County (Wash.)
Languages : en
Pages : 0
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Author:
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ISBN:
Category :
Languages : en
Pages : 114
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Author:
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Category : Hydrology
Languages : en
Pages : 338
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Author:
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Category :
Languages : en
Pages : 612
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Author:
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Category :
Languages : en
Pages : 19
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Book Description
A study was conducted to determine the naturally occurring concentrations of metals in unimpacted wetland soils at the Savannah River Site located near Aiken, SC. Soil samples were collected from three broad categories of wetlands: (1) large stream floodplain wetlands, (2) small stream floodplain wetlands, and (3) upland bays and depressions. Samples were collected from 75 locations to a depth of 3.1 m. All samples were analyzed for selected metals using EPA protocol and standard methods. Additionally, the pH, exchange capacity, and total organic carbon content of each sample was determined. Standard summary statistics were calculated and results are presented for each constituent. Box plots were also created relating metals concentrations to grain size distribution. Metals concentrations were found to increase with increasing silt and clay content. This increase in concentration was attributed to increasing cation exchange capacity and increasing organic matter content.
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309097142
Category : Political Science
Languages : en
Pages : 505
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For more than 100 years, the Coeur d' Alene River Basin has been known as "The Silver Valley" for being one of the most productive silver, lead, and zinc mining areas in the United States. Over time, high levels of metals (including lead, arsenic, cadmium, and zinc) were discovered in the local environment and elevated blood lead levels were found in children in communities near the metal-refining and smelter complex. In 1983, the U.S. Environmental Protection Agency (EPA) listed a 21-square mile mining area in northern Idaho as a Superfund site. EPA extended those boundaries in 1998 to include areas throughout the 1500-square mile area Coeur d'Alene River Basin project area. Under Superfund, EPA has developed a plan to clean up the contaminated area that will cost an estimated $359 million over 3 decades-and this effort is only the first step in the cleanup process. Superfund and Mining Megasites: Lessons from Coeur d'Alene River Basin evaluates the issues and concerns that have been raised regarding EPA's decisions about cleaning up the area. The scientific and technical practices used by EPA to make decisions about human health risks at the Coeur d'Alene River Basin Superfund site are generally sound; however, there are substantial concerns regarding environmental protection decisions, particularly dealing with the effectiveness of long-term plans.
