CRA 6.9kV Switch House Building Seismic Upgrades - Final Design Phase Colorado River Aqueduct
Summary
SCH Number
2015028088
Public Agency
Metropolitan Water District of Southern California
Document Title
CRA 6.9kV Switch House Building Seismic Upgrades - Final Design Phase Colorado River Aqueduct
Document Type
NOE - Notice of Exemption
Received
Posted
2/6/2015
Document Description
Design of seismic upgrades to the electrical switch houses at the Colorado River Aqueduct pumping plants. Planned structural upgrades to the Hinds, Eagle Mountain, and the Iron Mountain 6.9-kV switch houses include brasing of walls to support the steel towers mounted on the roofs; reinforcement of roof decks; addition of an exterior buttress wall; strengthening of existing shear walls; installation of piles beneath the existing shear walls and beneath the new exterior buttress wall; and injection grouting of existing cracks in the walls and roof decks. Fore the Gene switch house, planned structural upgrades include bracing of walls, reinforcement of the roof deck, and injection grounting of exisitng cracks in the walls and roof deck. For Intake Pumping Plant, the only upgrade anticipated is injection-grouting of existing cracks.
Contact Information
Name
Michael Melanson
Agency Name
Metropolitan Water District of Southern California
Contact Types
Lead/Public Agency
Phone
Location
Counties
Riverside, San Bernardino
Regions
Unincorporated
Notice of Exemption
Exempt Status
Categorical Exemption
Type, Section or Code
15301, 02, 04, 9 - C1, 2, 4 & 9
Reasons for Exemption
The proposed project consists of the operation, repair, maintenance, permitting, leasing, licensing, or minor alteration of existing public or private structures, facilities, mechanical equipment, or topographic features, involving negligible or no expansion of use beyond that existing at the time of the lead agency's determination. The proposed project consists of replacement or reconstruction of existing structures and facilities where the new structure will be located on the same site as the structure replaced and will have substantially the same purpose and capacity as the structure replaced. The proposed project consists of public or private alteration in the condition of land, water, and/or vegetation, which do not involve removal of healthy, mature, scenic trees. The proposed project consists of activities limited entirely to inspections, to check for performance of an operation, or quality, health, or safety of a project, including related activities.
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