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AB 2059

California Environmental Quality Act: transportation impacts: vehicle miles traveled: mitigation.

2025-2026 Regular Session Introduced by Cecilia Aguiar-Curry and 3 co-sponsors

AB 2059 establishes preservation protections for California's 85,000-acre Suisun Marsh to safeguard wetland habitat, water quality, and endangered species amid competing water and agricultural interests.

From committee: Do pass and re-refer to Com. on APPR. (Ayes 5. Noes 0.) (July 1). Re-referred to Com. on APPR.
#californiaenvironmentalqualityact #mitigation #transportationimpacts #vehiclemilestraveled
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Bill Summary · AB 2059

Legislative bill overview

AB 2059 seeks to establish preservation measures for Suisun Marsh, a critical wetland ecosystem in California's Sacramento-San Joaquin Delta region. The bill would implement protections and management strategies for this 85,000-acre marsh, which serves as vital habitat for migratory waterfowl, fish species, and endangered wildlife.

Why is this important

Suisun Marsh is one of California's largest contiguous brackish marshes and plays a crucial ecological role in the state's water system and biodiversity. Protection efforts directly affect water quality, species conservation, agricultural interests in the region, and California's compliance with federal environmental laws like the Clean Water Act and Endangered Species Act.

Potential points of contention

  • Water allocation conflicts: Preservation may restrict water diversions needed for agricultural and municipal use downstream, creating tensions with farming communities and water agencies
  • Land use restrictions: Marsh protection could limit development, agricultural expansion, or other economic uses on or adjacent to protected lands
  • Implementation costs and responsibility: Disagreement over who bears financial burden—state, federal government, or local stakeholders—and which agencies have management authority

Compiled from official sources — confirm details with the bill’s official record.

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