This page contains an August 2013 document with several signed letters granting the petitions for reconsideration of the major source boiler rule for the following issues:

• Definitions of startup and shutdown periods and the work practices that apply during such periods;
• Revised carbon monoxide (CO) limits based on a minimum CO level of 130 ppm; and
• The use of continuous parameter monitoring systems (CPMS), including the consequences of exceeding the operating parameter.

Learn more about the Major Source Boiler Rule.

• Signed Letters for Major Source Boiler Reconsideration (PDF)(22 pp, 3 MB, August 5, 2013)