Waste Management Unit G Reconstruction


SCH Number
Public Agency
Yolo County
Document Title
Waste Management Unit G Reconstruction
Document Type
NOE - Notice of Exemption
Document Description
The project involves replacement of liquid waste containment features to Waste Management Unit G (WMU-G), a class 2 (double lined) liquid surface impoundment at the Yolo County Central Landfill that was originally constructed in 1995. Wastes received in WMU-G include landfill leachate, septage, portable toilet and other non-hazardous liquid wastes. The primary containment features of the unit are nearing their useful life and must be replaced before failure. Additionally, the containment benns around the unit must be raised to meet flood protection requirements, due to a change in special flood hazard area mapping at the Landfill. Reconstruction activities consist of demolishing existing concrete, primary and secondary geomembranes, and associated features; extending perimeter berms and compacted clay portion of the containment system; reconstructing the primary and leak detection sumps; reinstalling new primary and secondary geomembranes; installing a new concrete wear surface over the entire unit; and, improving the customer dump locations. Reconstruction will occur within the existing unit footprint and involves a negligible expansion of use. During reconstruction, a temporary bin system for liquid waste customers will be maintained to ensure uninterrupted customer service.

Contact Information

Stephanie Cormier
Agency Name
Yolo County
Contact Types
Lead/Public Agency


Cross Streets
County Roads 28H and 104
Parcel #

Notice of Exemption

Exempt Status
Categorical Exemption
Type, Section or Code
15031 and 15302
Reasons for Exemption
project is to repair and rehabilitate an existing liquid waste containment unit that is nearing the end of its useful life, and bring into compliance with flood protection requirements, resulting in a negligible increase in capacity
County Clerk


Notice of Exemption

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