GEORGIANA SLOUGH EROSION CONTROL AND HABITAT ENHANCEMENT PROJECT

The Brannan-Andrus Levee Maintenance District is advancing the Georgiana Slough Erosion Control and Habitat Enhancement Project to address critical erosion and undercutting issues along the right bank levee of Georgiana Slough on Lower Andrus Island, California. The project involves the placement of quarry stone rip rap at the toe of the levee to stabilize the slope and form a foundational base for a newly constructed habitat bench extending along the entire length of the affected area. This dual-purpose intervention combines structural erosion control with ecological enhancement, aiming to restore and improve the natural habitat while ensuring levee integrity. The State Lands Commission will issue a 20-year General Lease — Public Agency Use, authorizing the project’s use of state lands through November 6, 2045. Construction activities are scheduled across multiple phases from June through November 2025, beginning with site preparation and barge mobilization, followed by waterside slope grading, landslide fill placement, vee slope and bench construction, planting of vegetation, and final demobilization. Work must comply with specified compaction standards, requiring fill materials to be placed in 4- to 6-inch layers and compacted to at least 95% relative compaction per ASTM D1557-91, and adhere to Best Management Practices, NPDES permit requirements, and CEQA guidelines. Inspection and acceptance will occur at key project sites including the Georgiana Slough construction zone and BALMD’s stockpile area on Lower Andrus Island, with responsibilities shared between the District as lead agency and contracted vendors performing construction, hauling, and material handling. Though the contract contains no explicit pricing structure, contract value, or formal FAR clauses, the project is governed by environmental compliance metrics, operational logs, and regulatory oversight. The solicitation number is 2024061227, with the project posted on November 12, 2025, and key points of contact include Emily Pappalardo, District Engineer, and Christopher Hall, Environmental Scientist for the State Lands Commission.