1990 Mammoth Lakes PM10 SIP Categories Topics Air Quality Plans Programs California State Implementation Plans Type Information Contact SIP Planning Staff Email SIPPlanning@arb.ca.gov Phone (279) 208-7225 The following information concerns the Mammoth Lakes PM10 Plan.District DocumentsMammoth Lakes PM10 SIP (link to District website)EPA ActionsApproval - Direct Final Rule (61 FR 32341, eff. 8/23/96) Related Resources 2024 Transport State Implementation Plan Amendment 2023 Carbon Monoxide SIP Revision 2024 San Joaquin Valley PM2.5 Plan