Castaic Dam Piezometer Installation Project
Summary
SCH Number
2020080125
Public Agency
California Department of Water Resources
(DWR)
Document Title
Castaic Dam Piezometer Installation Project
Document Type
NOE - Notice of Exemption
Received
Posted
8/10/2020
Document Description
The proposed project includes the installation of piezometers and an inclinometer at six different locations on the left abutment of the Castaic Dam. This is proposed after an Engineering Report prepared on December 31, 2018 presented a stability analysis for the left abutment of the Castaic Dam and identified data gaps in the piezometric data. DWR concluded that the left abutment is stable but piezometric surfaces appear lower than assumed in previous stability analyses. As a result, the proposed project will address the need for more precise data of the hydrogeological setting at Castaic Dam’s left abutment. (See Attachment A)
Contact Information
Name
Gina Radieve
Agency Name
California Department of Water Resources
Contact Types
Lead/Public Agency
Phone
Name
Agency Name
California Department of Water Resources
Contact Types
Project Applicant
Location
Cities
Castaic
Counties
Los Angeles
Other Location Info
The project is located in the Castaic Lake State Recreation Area in Castaic, CA. The work will occur on the left abutment (the esatern side) of the Castaic Lake Dam (see Exhibit A).
Notice of Exemption
Exempt Status
Categorical Exemption
Type, Section or Code
15306
Reasons for Exemption
The proposed project involves collection of exploratory information to address the need for more precise data of the hydrogeological setting at Castaic Dam’s left abutment. The exploratory work will provide an accurate capture of differences in piezometric pressure between areas in geologic formations that are considered critical to the dam’s left abutment stability. The project would not result in any serious or major disturbance to an environmental resources.
Attachments
Notice of Exemption
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