U.S. EPA has issued a final rule requiring the reporting of certain greenhouse gas emissions from the natural gas industry.  From its press release:  "Beginning in 2011, petroleum and natural gas facilities that emit more than 25,000 metric tons of carbon dioxide equivalent a year are required to monitor and report all greenhouse gas emissions to EPA. Data collection for petroleum and natural gas sources will begin January 1, 2011, with first annual reports due to EPA March 31, 2012."

Note that the definition of "facility" may not be what you think.  From the rule:  "[A]s proposed in April 2010, the definition of an onshore petroleum and natural gas production facility for this subpart is all petroleum or natural gas equipment associated with all petroleum or natural gas production wells and CO 2 EOR operations that are under common ownership or common control including leased, rented, and contracted activities by an onshore petroleum and natural gas production owner or operator and that are located in a single hydrocarbon basin as defined in 40 CFR 98.238. Where a person or entity owns or operates more than one well in a basin, then all onshore petroleum and natural gas production equipment associated with all wells that the person or entity owns or operates in the basin would be considered one facility."  (Emphasis is ours.)

Here is a copy of the pre-publication rule.

A copy of the final, published rule can be found here.  (Bumped.)