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Analysisof Occurrence Data from the Unregulated Contaminant Monitoring Program (UCM) and National Inorganics and Radionuclides Survey (NIRS) in Support Regulatory Determinations for the Second Drinking Water Contaminant Candidate List (CCL 2), June 2008.
| 题名： | Analysisof Occurrence Data from the Unregulated Contaminant Monitoring Program (UCM) and National Inorganics and Radionuclides Survey (NIRS) in Support Regulatory Determinations for the Second Drinking Water Contaminant Candidate List (CCL 2), June 2008. |
| 关键词： | sampling, potable water, health effects, toxicity, water systems, chemical compounds, contamination, contaminants, monitoring, reporting, data analysis |
| 摘要： | The Unregulated Contaminant Monitoring (UCM) program (Rounds 1 and 2) and the National Inorganics and Radionuclides Survey (NIRS) were important sources of data considered by the United States Environmental Protection Agency (EPA) when evaluating the occurrence of unregulated contaminants on the second Contaminant Candidate List (CCL 2). This report presents EPAs analysis of national occurrence of CCL 2 contaminants with data from those sources. Detailed occurrence analyses are presented in this report to support the EPA regulatory determinations for the four CCL 2 contaminants with Round 1, Round 2 and NIRS data: boron, metolachlor, 1,3-dichloropropene, and 1,1,2,2-tetrachloroethane. Detailed descriptions are presented of the data sources, data editing and management, development of national cross-sections using UCM Round 1 and Round 2 data from States, and the analytical approaches used to assess the occurrence data. / Supplementary Notes: See also PB2007-109898. / Availability Note: Order this product from NTIS by: phone at 1-800-553-NTIS (U.S. customers); (703)605-6000 (other countries); fax at (703)605-6900; and email at orders@ntis.gov. NTIS is located at 5285 Port Royal Road, Springfield, VA, 22161, USA. |
| 总页数： | u0822；120p |
| 报告类型： | 科技报告 |
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