Maximum contaminant levels, compliance dates and BATs for radionuclides

Maximum contaminant levels, compliance dates and BATs for radionuclides. Maximum contaminant levels, compliance dates and BATs for radionuclides. The following are the maximum contaminant levels, compliance dates and best available technologies for radium-226, radium-228 and gross alpha particle radioactivity: (1) Maximum contaminant levels for radionuclides. The following are the maximum contaminant levels for radium-226, radium-228 and gross alpha particle radioactivity: (a) MCL for combined radium-226 and radium-228. The maximum contaminant level for combined radium-226 and radium-228 is 5 pCi/l. The combined radium-226 and radium-228 value is determined by the addition of the results of the analysis for radium-226 and the analysis for radium-228. (b) MCL for gross alpha particle activity, excluding radon and uranium. The maximum contaminant level for gross alpha particle activity, including radium-226 but excluding radon and uranium, is 15 pCi/l. (c) MCL for uranium. The maximum contaminant level for uranium is 30 ug/l. (2) Compliance dates for combined radium-226 and radium-228, gross alpha particle activity, gross beta particle and photon radioactivity and uranium. Community water systems shall comply with the MCLs listed in sub. (1) and with s. NR 809.51 (1) beginning December 8, 2003 and compliance shall be determined in accordance with the requirements of ss. NR 809.50 and 809.51 . Compliance with reporting requirements for the radionuclides under Appendix A to subch. VII is required on and after December 8, 2003. (3) Best available technologies (BATs) for radionuclides. (a) The department identifies, as indicated in the following table, the best available technology for achieving compliance with the maximum contaminant levels for combined radium-226 and radium-228, uranium, gross alpha particle activity and beta particle and photo radioactivity. A community water system that shall treat to reduce radionuclide levels below the MCLs specified in sub. (1) or s. NR 809.51 shall achieve compliance using one of the methods listed in Table J, Table K or Table L. (4) Small water systems compliance technologies for radionuclides. (a) The department identifies, as indicated in the following table, the best available technology for achieving compliance with the maximum contaminant levels for combined radium-226 and radium-228, uranium, gross alpha particle activity and beta particle and photo radioactivity for small systems serving a population of 10,000 or less: (b) Point of Use (POU) treatment may only be allowed if the department determines that treatment prior to entry is not feasible. (5) Alternative treatment. The department may approve the use of alternative treatment not listed in subs. (3) and (4) , if a water supplier demonstrates to the department, using pilot studies or other means, that the alternative treatment is sufficient to achieve compliance with the MCLs in sub. (1) .