Science & Technology
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National Contaminant Occurrence Database (NCOD)
This site describes water sample analytical data that EPA is currently using and has used in the past for analysis, rulemaking, and rule evaluation. The data have been checked for data quality and analyzed for national representativeness.
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Major Elements of Six-Year Review
Learn about the six components EPA uses to evaluate national primary drinking water regulations during a six-year review
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Six-Year Review 3 Frequent Questions and Answers
Six-Year Review 3 Frequent Questions and Answers
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Fact Sheet: Announcement of Completion of EPA's Third Six-Year Review of Existing Drinking Water Standards
The fact sheet contains questions and answers about EPA's third Six-Review of Drinking Water Standards
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Addressing Risk-Balancing Considerations for Six-Year Review of Drinking Water Standards
Addressing Risk-Balancing Considerations for Six-Year Review of Drinking Water Standards
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CMAQ Research
This page identifies broadly what the CMAQ team is working on and how others can get involved, whether through scientific collaborations, code contributions, or even a temporary position at EPA.
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Exposure Biomarkers in Aquatic Organisms
Exposure Biomarkers Studies help to better characterize the exposure to chemicals by studying the changes aquatic organisms undergo when exposed to certain types of chemicals.
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Reynolds AUM Site Screening Report
Site Screening Report of Reynolds abandoned uranium mine which includes all immediate information associated with the mine site.
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Site Screening Report: Paul Huskie No. 3 AUM
Site Screening Report of Paul Huskie No. 3 abandoned uranium mine which includes all immediate information associated with the mine site.
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Site Screening Report: Sam Charlie No. 1 AUM
Site Screening Report of Sam Charlie No. 1 abandoned uranium mine which includes all immediate information associated with the mine site.
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Released Records
EPA Released Records
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Ramco No. 22 AUM Site Screening Report
Site Screening Report of Ramco No. 22 abandoned uranium mine which includes all immediate information associated with the mine site.
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Site Screening Report: Section 33 AUM
Site Screening Report of Section 33 abandoned uranium mine which includes all immediate information associated with the mine site.
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Site Screening Report: Plot 3 AUM
Site Screening Report of Plot 3 abandoned uranium mine which includes all immediate information associated with the mine site.
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Nose Rock No. 1 AUM Site Screening Report
Site Screening Report of Nose Rock No. 1 abandoned uranium mine which includes all immediate information associated with the mine site.
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Sunlight AUM Site Screening Report
Site Screening Report of Sunlight abandoned uranium mine which includes all immediate information associated with the mine site.
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Phillip Dee 1 AUM Site Screening Report
Site Screening Report of Phillip Dee 1 abandoned uranium mine which includes all immediate information associated with the mine site.
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Site Screening Report: North Martin AUM
Site Screening Report of North Martin abandoned uranium mine which includes all immediate information associated with the mine site.
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Ramco No. 20 AUM Site Screening Report
Site Screening Report of Ramco No. 20 abandoned uranium mine which includes all immediate information associated with the mine site.
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NA-0924 AUM Site Screening Report
Site Screening Report of NA-0924 abandoned uranium mine which includes all immediate information associated with the mine site.