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Meeting was attended by approximately 90 people. And based on the above option review, only option 4 addresses the construction concerns of the Community Without impeding a possible future extension of rail service to north beach or Fishermans Wharf. Now, the challenges with this option include a very tight timeline to secure the access rights to the private property, would require the appropriation of additional local funds needed to secure the property access rights. And then a bit of additional engineering review. And approval, if necessary, to remove the tbms from private property. Now, if option 4 proves infeasible, option 3, leaving the tbm head under columbus avenue, would respond to the disruption concerns raised by some members of the north Beach Community. The challenges with option 3 include also a tight ....
Real. Right. The downside of option 3 is that in order to accommodate for north beach station, you would the likelihood would be that you would have to remove these machines, which would be from a difficult operation in the future. Were currently looking at, though, to look at ways of perhaps diverting the machines, kind of off the path so that would either minimize or, you know, prevent the need to remove these machines. And normally when you use a tunnel Boring Machine at the end of the project, that tunnel Boring Machine comes out and it i guess goes onto another project somewhere to dig again . Yes. Typically these machines have a useful life. The particular machine thats being used to construct the central subway are brandnew machines. So, they have a significant quite a bit of useful life left in them. All right, thank you. Other members of the board . Mr. Reiskin . Yes ....
Uncertain at that. And i think thats a reasonable position and a reasonable tradeoff and thats why we are recommending that as our kind of backstop plan. If were unable to make something happen offsite. The final thing i think youll hear from folks is kind of our final backstop, which is if for some reason going to the pagoda site doesnt work and for some reason we cant make leaving it underground work, which i dont anticipate we would have trouble doing, but we dont have that fully designed and approved, that we keep the current approved project on the table as our ultimate default. And that is because, you know, we have an approved project. Its a fully funded project. We have an executed contract. We would be putting the agency, we believe, at significant risk if we didnt have that final backstop to fall back on. Its our hope that we wouldnt get there. I saw some correspondence suggesting that we come back to you before hitting that final stop. Im certainly open to that. I think folk ....
I believe, director brinkman, youre referring to option 3. Yes. The benefits of option 3, it does allow the construction of 3,000 feet of critical thank youerctionv that could make the possibility of an extension be real. Right. The downside of option 3 is that in order to accommodate for north beach station, you would the likelihood would be that you would have to remove these machines, which would be from a difficult operation in the future. Were currently looking at, though, to look at ways of perhaps diverting the machines, kind of off the path so that would either minimize or, you know, prevent the need to remove these machines. And normally when you use a tunnel Boring Machine at the end of the project, that tunnel Boring Machine comes out and it i guess goes onto another project somewhere to dig again . Yes. Typically these machines have a useful life. The particular m ....
That would be difficult and disruptive to remove at a later date. This option would also complicate a future extension of the line and or station. And abandoning the tbms in the ground object columbus would require the sfmta to compensate the contractor for the loss of resale value to machines, removing the tbm trailing gear, and also could cause some potential schedule delays to the existing tunnel contract and station work. Option 4 is removing the tunnel blowing machines at 17 31 powell street, commonly known as pagoda palace. This would require additional study. The property is a former cinema, its currently empty and dee cap itherctiontion, however, the Property Owner has obtained the approvals from the Planning Department to redevelop the property at the mixed use retail and Residential Development co ....