CA SB1404

Requires lead agencies to determine whether projects may result in significant conversion of oak woodlands and mandates mitigation alternatives under the California Environmental Quality Act.

Designates removal of 3 or more oak trees within oak woodlands in areas mapped as critical to habitat linkage, natural resources protection, or biodiversity as a significant environmental effect.

Establishes four mitigation alternatives: conserving oak woodlands through easements, planting replacement trees (for no more than half mitigation requirement), contributing funds to the Oak Woodlands Conservation Fund, or implementing other agency-developed measures.

Exempts affordable housing projects in urbanized areas, agricultural land conversions, Natural Community Conservation Plan projects, and projects undertaken under Section 21080.5 from these requirements.

Allows legal challenges to agency decisions regarding oak woodlands impacts and clarifies the section does not modify other CEQA requirements beyond oak woodland effects.