Del Valle Dam Cavity Excavation and Backfilling


SCH Number
Lead Agency
Water Resources, Department of (California Department of Water Resources)
Document Title
Del Valle Dam Cavity Excavation and Backfilling
Document Type
NOE - Notice of Exemption

Document Description
DFD staff shall excavate and fill an existing cavity observed during the 2013 Dam Safety Review Board (DSRB) Inspection. The cavity is located on the north side of the access road at the toe of the dam. The cavity is currently about one foot in diameter and more than two feet deep, and the extent of excavation is not anticipated to exceed five feet in depth. The total volume of excavated material is anticipated to be less than three cubic yards. Upon completion of the excavation, the cavity shall be backfilled with the excavated soils and compacted with a vibratory plate. Vegetation removal will be primarily done with hand tools and/or weed eaters. Removed vegetation will be processed onsite and left as mulch in the same area or removed by truck.

Contact Information
Anthony Chu
California Department of Water Resources
1416 Ninth Street
Sacramento, CA 95814




Notice of Exemption

Exempt Status
Categorical Exemption
Type, Section or Code
S:15301, Class 1
Reasons for Exemption
Existing Facilities.
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