We've previously reported on U.S. EPA's draft guidance for hydraulic fracturing activities using diesel fuels (see here).  U.S. EPA recently announced a public meeting to discuss that draft, scheduled for Monday, June 29, 2012, in Washington, DC.  "The meeting is open to all interested parties. The agency requests input on the following technical aspects of the draft permitting guidance: Diesel fuels description; diesel fuels usage information; permit duration and well closure; area of review; information submitted with the permit application; and monitoring."