Because Metro works at a snails pace in accountability to the public, here is the handout from the August SR710 TAC Meeting. Please note a statement was made during this meeting that a funding source would not be determined & identified until after the Final EIR is issued & an alternative has been selected. Someone correct me if I have this wrong, but I was under the impression that the Feds did not want to sign the ROD without the guarantee that a feasible funding source would be identified during the EIR process. Also, Michelle Smith stated that there would be no further meetings or discussion regarding 'Goods movement' meaning trucks. Previously planned meetings or forums have been scrapped. No explanation given. Typical of our favorite project manager.
Notes from Sylvia Plummer, August 16, 2014
Tunnel Design Considerations starts on page 25 of the handout and covers both the Light Rail and Highway tunnel alternatives.
For Geologic Conditions see page 28 of the handout, for the list of mixed face conditions go to page 30.
Ground water impacts?
We were told that the Light Rail project is above the water tables. The highway tunnel will be 20 feet deep at the portals and 280 feet deep in the center. The highway tunnel will be beneath the ground water tables.
Impact of Earthquake Faults?
They have a design for earthquake fault offset, they will built oversized vaults around the tunnel in those areas. See page 29 of the handout.
Other tunnel comparisons.... They continue to speak about smaller tunnels as their proven successes in California, see page 36. Light Rail tunnels are about 20' in diameter vs 58' SR-710 tunnel. They mention tunnels from other Countries, none are as large or have the same geological problems. No mention of the Seattle Tunnel which happens to be the same diameter as the proposed SR-710 tunnel. (However, the SR-710 geological problems are not the same).
Where will funding come from?
A statement was made during this meeting that a funding source would not be determined & identified until after the Final EIR is issued & an alternative has been selected.
Here is a link to the most recent SR-710 Study fact sheet: