For purposes of this chapter, each district’s “existing new source review program” is comprised of those new source review rules and regulations for both nonattainment and prevention of significant deterioration for new, modified, repaired, or replaced sources that have been adopted by the district governing board on or prior to December 30, 2002, that have been submitted to the U.S. Environmental Protection Agency by the state board for inclusion in the state implementation plan and are pending approval or have been approved by the U.S. Environmental Protection
Agency.