Seepage Repair at Reclamation District 404, San Joaquin River, River Mile 42.1 to 42.3 Right Bank
MND - Mitigated Negative Declaration
Present Land Use
DWR is proposing to remediate seepage by constructing a cement-bentonite slurry wall through the existing levee that protects an urban residential area and State Highway 4 near the Garwood Bridge where is crosses the San Joaquin River. This proposed construction completes the repair of a critical erosion site at RM 43.2R. Waterside erosion was repaired in 2008. The levee crown would be temporarily degraded down 3 feet to provide a more stable platform for slurry wall construction. A 2-foot-wide cement-bentonite slurry wall would be constructed at the levee crown midline to an average depth of 40 feet. The crown would be then be rebuilt and the crown road resurfaced. No excavation would occur in the channel and construction would occur only from the landside.
Aesthetics, Agriculture and Forestry Resources, Air Quality, Biological Resources, Cultural Resources, Cumulative Effects, Economics/Jobs, Flood Plain/Flooding, Geology/Soils, Hazards & Hazardous Materials, Hydrology/Water Quality, Noise, Population/Housing, Public Services, Recreation, Transportation, Vegetation, Wetland/Riparian, climate change
State Reviewing Agencies
California Department of Fish and Wildlife, North Central Region 2 (CDFW), California Department of Parks and Recreation, California Department of Transportation, District 10 (DOT), California Highway Patrol, California Native American Heritage Commission (NAHC), California Regional Water Quality Control Board, Central Valley Sacramento Region 5 (RWQCB), Central Valley Flood Protection Board, Delta Protection Commission, Resources Agency, California State Lands Commission (SLC)
Reviewing Agency Comments
California State Lands Commission (SLC)
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