Effective October 15, 2012, owners or operators of hydraulically fractured natural gas wells must notify USEPA prior to commencing well completion operations. The notice is required no later than two days prior to commencement of completion activities, and it must provide: the anticipated date of the well completion operation; contact information for the owner or operator; the API well number; the latitude and longitude coordinates for the well; and the planned date for the beginning of flowback. This information can be submitted by email to the appropriate USEPA region.  See HERE for details.  (40 CFR 5424(a)(2).)