CARB Responses Regarding Requests for Enforcement Discretion for Advanced Clean Fleets and Omnibus Regulations INFORMATION Categorías Programs Heavy-Duty Low NOx Tipo Information Contact Low NOx Correo electrónico lownox@arb.ca.gov July 6, 2023: CARB Response to EMA Request for Enforcement Discretion Under California Code of Regulations, Title 13 Section 2015(r). EMA Request Enforcement Discretion for Advanced Clean Fleets Regulation December 17, 2023: CARB Response to EMA Request for Enforcement Discretion Under California Code of Regulations, Title 13 Section 1956.8(b). EMA Request Enforcement Discretion for Omnibus Regulation