A simulated emergency drill will take place all day today near Diablo Canyon nuclear power plant.
The county of San Luis Obispo and several other local and state agencies are participating in the drill in conjunction with PG&E.
There will be no sounding of the Early Warning System sirens and there will be no activation or use of the Emergency Alert System for the drill.
The simulated emergency will involve activating the county Emergency Operations Centers, the Joint Information Center and an Incident Command Post and other related emergency coordination and support efforts.
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The public may notice some activity in the vicinity of Port San Luis but no disruption is anticipated.