Grayson & Walnut Creeks Levee Improvement at CCCSD Treatment Plant Project

General work description: The work to be done generally consists of raising the western levee along Grayson Creek and Walnut Creek between State Route 4 to the south and BNSF railroad tracks to the north to increase the flood protection for the CCCSD wastewater treatment plant located in Martinez. Work includes placing and compacting levee fill, constructing concrete flood walls, reconstructing a concrete maintenance road, removing railroad tracks, replacing fence and gates, paving driveway conforms and adjusting and relocating various utilities.
GFE (click to expand/collapse)
Name Size
CCC_GFE_8348 1.3 MB
Proposal & Contract (click to expand/collapse)
Name Size
CCC_PC_8348 893.1 KB
Reference Documents (click to expand/collapse)
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Name Size
S1_Geotechincal Investigation Report_3.24.2023 27.9 MB
S2_Geotechnical Engineering Services letter_10.17.2025 19.9 MB
S3_FAA Letters of Determination 434.4 KB
Special Provisions (click to expand/collapse)
Name Size
CCC_SP_8348 81.1 MB