Visual Materials
Portal Powerhouse - Forebay - Left: placing impervious blanket material
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Portal Powerhouse - Forebay
Visual Materials
Portal Powerhouse - Forebay - Placing impervious blanket on morane slope upstream from right abutment.
photCL SCE 02 - 43534

Portal Powerhouse - Forebay
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Portal Powerhouse - Forebay - Damsite view, borrow area 2 in foreground.
photCL SCE 02 - 43604

Portal Powerhouse - Forebay
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Portal Powerhouse - Forebay - View from station 5+00, looking toward left abutment, showing outcroppings of ledge rock while excavating for upstream cutoff under impervious section.
photCL SCE 02 - 43311

Portal Powerhouse - Forebay
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Portal Powerhouse - Forebay - Placing earthfill upstream from sluice pipe.
photCL SCE 02 - 43596

Portal Powerhouse - Forebay
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Portal Powerhouse - Forebay - Intake channel erosion through blanket & blanket protection since placement in 1955.
photCL SCE 02 - 44787

Portal Powerhouse - Forebay
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Portal Powerhouse - Forebay - East portion of dam foundation showing contact between impervious zone, filter, & tunnel muck zone.
photCL SCE 02 - 43614