The Water Quality Control Commission proposed to amend 5 Colo. Code Regs. §1002.31, Basic Standards and Methodologies for Surface Water. Changes would outline requirements for the commission to grant temporary modification to numeric standards and delay consideration of nutrient criteria until March 2012. In addition, the commission proposed to alter standards for a number of state rivers and basins. http://www.sos.state.co.us/CCR/Upload/NoticeOfRulemaking/ProposedRuleAttach2011-00111.PDF.