After weeks of wrangling over their surface transportation reauthorization bill, the Senate this afternoon is set to start working through a list of 30 amendments that contains a meaty assortment of energy measures. The Senate is scheduled to start voting at about 2:15 this afternoon on a negotiated list of 30 amendments that will include language on the Keystone XL pipeline, U.S. EPA clean air rules, energy tax extenders and expanded offshore drilling. The set of amendments includes 18 germane amendments and 12 nongermane ones, plus a manager's amendment that includes 37 noncontroversial ones from both sides.