CA SB415

Requires local air districts and the State Air Resources Board to assess socioeconomic impacts on families earning less than $100,000 annually when proposing air quality rules or regulations that significantly affect emissions limitations.

Narrows the definition of "socioeconomic impacts" to focus on low-income families' costs rather than broader regional economic effects or all business types affected by regulations.

Allows both local districts and the state board to contract with third-party contractors to conduct assessments, with specified requirements for conflicts of interest disclosures, qualifications, schedule, and budget.

Requires state board assessments to include econometric analysis with baseline cost estimates, detailed assumptions, data source citations, and analysis of impacts on low-income families, with compliance to Department of Finance methodological standards.

Exempts regulations with less restrictive emissions limits that don't interfere with air quality plans, state board regulations with less than $10 million economic impact, and local districts with populations under 500,000.