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Originally Posted by M00dy
They'd be idiots to cancel the transmission line move. Whether a new bridge, tunnel, etc the lines will have to move eventually. The work to move the lines has started any any stop now would be a total waste.
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Bingo! BTW, BC Hydro constructed that specific high-voltage transmission line circa mid-1970's (unique single, high-mast, greenish towers).
The new GMB was obviously the impetus for BC Hydro removing the in-tunnel connection to ground-level for the same reasons - seismic. Should just a shallow, localized 6.5+ quake hit the GMT, both the GMT & BC Hydro transmission line will not likely survive same.
BC Hydro's strategic purpose is "reliability" and that transmission line supplies electricity to Richmond, Delta and other parts of Metro Van:
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The transmission line that runs through the George Massey Tunnel is a critical part of our network, supplying power to Richmond, Delta and other parts of the Lower Mainland. It’s an important piece of infrastructure that helps us keep the lights on for tens of thousands of customers in your area.
Seismic: Overhead lines and structures can be built to withstand seismic events. The overhead alternative would be designed to withstand a 1-in 2,475 year event, which is consistent with the latest building code requirements for critical infrastructure.
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https://www.bchydro.com/content/dam/BCHy...h-discussion-guide-and-feedback-form.pdf
At this juncture of the construction phase, whether or not the GMB proceeds should not even enter BC Hydro's decision-making process IMHO.