On April 1, U.S. EPA proposed to require construction sites to use best management practices to control the volume and velocity of stormwater runoff. The proposed rule marks another turn in the long-running saga of U.S. EPA efforts to regulate stormwater runoff from construction sites. In 2009, U.S. EPA issued a rule imposing numeric limits on turbidity in construction runoff. In 2010, U.S. EPA stayed the turbidity limit, and in 2012 withdrew it, in the wake of litigation filed by builders and utilities. The new proposed rule is available at 78 Fed. Reg. 19434 (Apr. 1, 2013). Comments are being accepted through May 30.