Volatile Organic Compounds in the Nation's Ground Water and Drinking-Water Supply Wells: Supporting Information

Appendixes

Appendix 1. Key to NAWQA Study Units that Completed Aquifer Studies for VOCs
Appendix 2. Abbreviations and Acronyms
Appendix 3. Additional Information on the Approach of this Assessment
Appendix 4. Compound names used in this report, International Union of Pure and Applied Chemistry (IUPAC) names, Chemical Abstract Service (CAS) numbers, predominant use group, and other use information in alphabetical order.
Appendix 5. Detection frequency of at least one volatile organic compound (VOC) by principal or other aquifer and by aquifer study at two assessment levels (in order of overall decreasing detection frequency).
Appendix 6. Detection frequencies and median concentrations for selected volatile organic compounds in samples from aquifer studies.
Appendix 7. Concentrations of selected volatile organic compounds (VOCs) in samples of untreated ground water.
Appendix 8. Detection frequencies and median concentrations for selected volatile organic compounds in samples from domestic wells.
Appendix 9. Summary of concentrations of selected volatile organic compounds in domestic well samples in comparison to U.S. Environmental Protection Agency (USEPA) Maximum Contaminant Levels (MCLs) for regulated compounds and to Health- Based Screening Levels (HBSLs) for unregulated compounds, and concentrations within one order of magnitude of MCLs and HBSLs.
Appendix 10. Detection frequencies and median concentrations for selected volatile organic compounds in samples from public wells.
Appendix 11. Summary of concentrations of selected volatile organic compounds in public wells in comparison to U.S. Environmental Protection Agency (USEPA) Maximum Contaminant Levels (MCLs) for regulated compounds and to Health-Based Screening Levels (HBSLs) for unregulated compounds, and concentrations within one order of magnitude of MCLs and HBSLs.

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