Notice of a Public Meeting on Long Term 2 Enhanced Surface Water Treatment Rule: Initiate Regulatory Review-Cryptosporidium Analytical Method Improvements and Update on Source Water Monitoring

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The Environmental Protection Agency (EPA) is hosting a public meeting on December 7, 2011, to discuss the analytical methods for Cryptosporidium and the source water monitoring data from the Long Term 2 Enhanced Surface Water Treatment Rule (LT2 rule). This is the first of at least two meetings on the LT2 rule that EPA will host. At the December meeting, EPA will present its evaluation of the LT2 rule Cryptosporidium source water monitoring data, new information on the performance of Method 1623, as well as the latest information on Method 1623 improvements. A public meeting on the LT2 rule uncovered finished water reservoir requirement will occur in Spring 2012. Matters related to the uncovered finished water reservoir requirement will not be discussed at the December 7, 2011, meeting. The information discussed in these meetings is part of the review of the LT2 rule under the Six Year Review process announced as part of EPA's Retrospective Review Plan under Executive Order (E.O.) 13563 in August 2011. The LT2 rule requires a second round of Cryptosporidium monitoring, which is scheduled to start in 2015. The Stage 2 Microbial and Disinfection Byproducts (M/DBP) Federal Advisory Co