Dam Remediation Project-Geotechnical Studies-Test Sections for Excavation and CDSM Placement
Summary
SCH Number
2009038026
Public Agency
California Department of Water Resources
(DWR)
Document Title
Dam Remediation Project-Geotechnical Studies-Test Sections for Excavation and CDSM Placement
Document Type
NOE - Notice of Exemption
Received
Posted
3/3/2009
Document Description
The Lake Perris water surface elevation was lowered in the fall of 2005 approximately 25 vertical feet as a result of dam seismic safety concerns. Environmental review and engineering design evaluations for remedial construction on the dam and lakebed are underway. This Notice of Exemption covers geotechnical studies proposed in the fall and winter of 2009 to collect information needed for planning this construction project. The studies will include one excavation test section to evaluate dewatering of the foundation, and two Cement Deep Soil Mixing (CDSM) test sections to verify that the CDSM equipment, procedures, and mix design will produce the required soil improvements.
Contact Information
Name
Mike Driller
Agency Name
California Department of Water Resources
Contact Types
Lead/Public Agency
Phone
Location
Cities
Moreno Valley
Counties
Riverside
Notice of Exemption
Exempt Status
Categorical Exemption
Type, Section or Code
15306 - Class 6
Reasons for Exemption
These test sections are intended to collect information needed for the proposed remedial construction of Perris Dam and eventual restoration of Lake Perris.
Disclaimer: The document was originally posted before CEQAnet had the capability to host attachments for the public. To obtain the original attachments for this document, please contact the lead agency at the contact information listed above. You may also contact the OPR via email at state.clearinghouse@opr.ca.gov or via phone at (916) 445-0613.