Visual Materials
Portal Powerhouse
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Portal Powerhouse
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Portal Powerhouse - Staging for inserting I-beams and penstock into pipe.
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Portal Powerhouse
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Portal Powerhouse - Up tailrace channel from under bridge, during outage to install triangular restriction at end of branch of penstock.
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Portal Powerhouse
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Portal Powerhouse - First four sections of 8.5 diameter penstock, ready for install.
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Portal Powerhouse - Portal Forebay
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Portal Powerhouse - Portal Forebay - Downstream side of dam showing outlet end of 24" sluice pipe.
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Portal Powerhouse
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Portal Powerhouse - Placing concrete in supporting wall under end of 12' diameter pipe. Excavating old concrete anchor. [Forming new] foundation & Wye branch anchor.
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