Dyer and Patterson Seismic Conduit Update (OM-DFD-2025-006)
Summary
SCH Number
2025060439
Public Agency
California Department of Water Resources
(DWR)
Document Title
Dyer and Patterson Seismic Conduit Update (OM-DFD-2025-006)
Document Type
NOE - Notice of Exemption
Received
Posted
6/10/2025
Document Description
DWR Delta Field Division staff and the O&M Communications Branch will perform updates to the seismic utility infrastructure at Dyer and Patterson Reservoirs. Work will occur at the existing christy boxes within the established roadways at the top of each reservoir and within the paved surfaces adjacent to the road curbs. A mini skid steer, posthole digger, and hand tools will be used to dig approx. 2’x 2’ wide and 36” deep trench to access the base of each christy box beneath the asphalt. The new conduits will run above ground. All work is within DWR right of way.
Contact Information
Name
Janine Beck
Agency Name
Department of Water Resources
Job Title
Environmental Scientist
Contact Types
Lead/Public Agency / Parties Undertaking Project
Phone
Email
Name
Sara Lowry
Agency Name
Department of Water Resources
Job Title
Environmental Program Manager
Contact Types
Lead/Public Agency / Parties Undertaking Project
Phone
Email
Location
Cities
unincorporated area
Counties
Alameda
Regions
Northern California
Cross Streets
Dyer Rd, Altamont Pass Rd; Patterson Pass Rd, Greenville Rd
Waterways
Patterson Reservoir, Dyer Reservoir
Other Location Info
Coordinates: Dyer LAT: 37°45'25.35"N, LONG: 121°40'29.42"W; Patterson LAT: 37°41'50.80"N, LONG: 121°41'3.34"W
Notice of Exemption
Exempt Status
Categorical Exemption
Type, Section or Code
Class 1, Existing Facilities, Section No. 15301
Reasons for Exemption
This project is exempt because it involves routine maintenance activities. This project will not result in impacts to special status species or habitat. The Categorical Exemption Class 1 will be used for CEQA compliance as this activity will be implemented without any environmental impacts.
County Clerk
Alameda
Attachments
Notice of Exemption
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