CA SB594

Prohibits state agencies from issuing waste discharge permits for new Class III landfills (those not previously permitted or receiving waste before January 1, 2026) unless specific environmental justice review conditions are met

Requires county boards of supervisors to hold a separate publicly noticed hearing to evaluate whether a proposed landfill is consistent with the county's environmental justice element in its general plan

Mandates counties to submit a summary of their environmental justice evaluation, including any identified conflicts with the county's environmental justice element, along with all public comments to the regional water board as part of the permit application

Defines "environmental justice community" as an area with a Pollution Burden score in the 90th percentile as identified by CalEnviroScreen

Requires local enforcement agencies in counties without an adopted environmental justice element to consider CalEnviroScreen data and community health metrics when evaluating potential disproportionate impacts on environmental justice communities