United States Government Publishing Office publisher pbl distributor dst United States National Archives and Records Administration Office of the Federal Register author aut Government Organization text government publication eng FR Regulatory Information 2000_register executive 2010-09-23 article Part II Rules and Regulations D09002ee1c81ea2db D09002ee1c81ea3c7 United States Environmental Protection Agency originator org United States Government Agency or Subagency Today, EPA is finalizing maximum contaminant level goals (MCLGs), maximum contaminant levels (MCLs), and monitoring, reporting, and public notification requirements for radionuclides. Today's rule is only applicable to community water systems. Today's rule includes requirements for uranium, which is not currently regulated, and revisions to the monitoring requirements for combined radium-226 and radium-228, gross alpha particle radioactivity, and beta particle and photon radioactivity. Based on an improved understanding of the risks associated with radionuclides in drinking water, the current MCL for combined radium-226/-228 and the current MCL for gross alpha particle radioactivity will be retained. Based on the need for further evaluation of the various risk management issues associated with the MCL for beta particle and photon radioactivity and the flexibility to review and modify standards under the Safe Drinking Water Act (SDWA), the current MCL for beta particle and photon radioactivity will be retained in this final rule, but will be further reviewed in the near future. Some parts of EPA's 1991 proposal, including the addition of MCLGs and the National Primary Drinking Water Regulation (NPDWR) for uranium, are required under the SDWA. Other portions were intended to make the radionuclides NPDWRs more consistent with other NPDWRs, e.g., revisions to monitoring frequencies and the point of compliance. Lastly, some portions were contingent upon 1991 risk analyses, e.g., MCL revisions to the 1976 MCLs for combined radium-226 and -228, gross alpha particle radioactivity, and beta particle and photon radioactivity. The portions required under SDWA and the portions intended to make the radionuclides NPDWRs more consistent with other NPDWRs are being finalized today. The portions contingent upon the outdated risk analyses supporting the 1991 proposal are not being finalized today, in part based on updated risk analyses. 65 FR 76708 https://www.govinfo.gov/app/details/FR-2000-12-07/00-30421 00-30421 fr07de00-10 RIN 2040-AC98 6560-50-U FRL-6909-3 https://www.govinfo.gov/app/details/FR-2000-12-07/00-30421 https://www.govinfo.gov/content/pkg/FR-2000-12-07/html/00-30421.htm https://www.govinfo.gov/content/pkg/FR-2000-12-07/pdf/00-30421.pdf Environmental Protection Chemicals Indians-Lands Incorporation by Reference Intergovernmental Relations Radiation Protection Water Supply Administrative Practice and Procedure Reporting and Recordkeeping Requirements 46 p. 76708 76753 65 FR 76708 Title 40 Part 141 40 CFR Part 141 Title 40 Part 142 40 CFR Part 142 Title 40 Part 9 40 CFR Part 9 RIN 2040-AC98 National Primary Drinking Water Regulations; Radionuclides; Final Rule; Federal Register Vol. 65, Issue RULE 00-30421 II ENVIRONMENTAL PROTECTION AGENCY 2003-12-08 FRL-6909-3 6560-50-U 00-30421 Final rule.

Today, EPA is finalizing maximum contaminant level goals (MCLGs), maximum contaminant levels (MCLs), and monitoring, reporting, and public notification requirements for radionuclides. Today's rule is only applicable to community water systems. Today's rule includes requirements for uranium, which is not currently regulated, and revisions to the monitoring requirements for combined radium-226 and radium-228, gross alpha particle radioactivity, and beta particle and photon radioactivity. Based on an improved understanding of the risks associated with radionuclides in drinking water, the current MCL for combined radium-226/-228 and the current MCL for gross alpha particle radioactivity will be retained. Based on the need for further evaluation of the various risk management issues associated with the MCL for beta particle and photon radioactivity and the flexibility to review and modify standards under the Safe Drinking Water Act (SDWA), the current MCL for beta particle and photon radioactivity will be retained in this final rule, but will be further reviewed in the near future. Some parts of EPA's 1991 proposal, including the addition of MCLGs and the National Primary Drinking Water Regulation (NPDWR) for uranium, are required under the SDWA. Other portions were intended to make the radionuclides NPDWRs more consistent with other NPDWRs, e.g., revisions to monitoring frequencies and the point of compliance. Lastly, some portions were contingent upon 1991 risk analyses, e.g., MCL revisions to the 1976 MCLs for combined radium-226 and -228, gross alpha particle radioactivity, and beta particle and photon radioactivity. The portions required under SDWA and the portions intended to make the radionuclides NPDWRs more consistent with other NPDWRs are being finalized today. The portions contingent upon the outdated risk analyses supporting the 1991 proposal are not being finalized today, in part based on updated risk analyses.

This regulation is effective December 8, 2003. The incorporation by reference of the publications listed in today's rule is approved by the Director of the Federal Register as of December 8, 2003. For judicial review purposes, this final rule is promulgated as of 1 p.m. Eastern Time on December 7, 2000. For technical inquiries, contact David Huber, Standards and Risk Management Division, Office of Ground Water and Drinking Water, EPA (MC-4607), 1200 Pennsylvania Avenue, NW., Washington, DC 20460; telephone (202) 260-9566. For general inquiries, the Safe Drinking Water Hotline is open Monday through Friday, excluding Federal holidays, from 9:00 a.m. to 5:30 p.m. Eastern Standard Time. The Safe Drinking Water Hotline toll free number is (800) 426-4791. Environmental Protection Chemicals Indians-Lands Incorporation by Reference Intergovernmental Relations Radiation Protection Water Supply Administrative Practice and Procedure Reporting and Recordkeeping Requirements Water supply: National primary drinking water regulations Radionuclides, http://www.epa.gov/OGWDW/standard/varfd.pdf.” http://www.epa.gov/radiation/ionize.htm http://www.epa.gov/safewater/tables.html.” http://www.epa.gov/sbrefa/ http://www.niddk.nih.gov/health/kidney/kidney.htm” http://www.niddk.nih.gov/health/kidney/pubs/ http://www.niddk.nih.gov/health/kidney/pubs/yourkids/index.htm” Vol. 65, no. 236 Office of the Federal Register, National Archives and Records Administration 2000-12-07 continuing daily deposited born digital 361 p. Table of Contents: AE 2.7: GS 4.107: AE 2.106: KF70.A2 https://www.govinfo.gov/app/details/FR-2000-12-07 P0b002ee1809f27c5 0097-6326 0042-1219 0364-1406 769-004-00000-9 000582072 f:fr07de00 https://www.govinfo.gov/app/details/FR-2000-12-07 https://www.govinfo.gov/content/pkg/FR-2000-12-07/pdf/FR-2000-12-07.pdf https://www.govinfo.gov/content/pkg/FR-2000-12-07/xml/FR-2000-12-07.xml fdlp 76561 76914 DGPO 2010-09-23 2024-06-08 FR-2000-12-07 machine generated eng FR FR-2000-12-07 65 236