Q619. For a facility that operates stationary combustion equipment and only became subject to 40 CFR part 98 due to subpart W related emissions, should the monitoring plan have been put in place a by January 1 or April 1, 2011?

A619. For Subpart W, monitoring plans as outlined in 40 CFR 98.237 were to be completed by April 1, 2011.  This monitoring plan must include an explanation of the processes and methods used to collect the necessary data for all GHG calculations, including those in both subpart C and subpart W.