. >> reporter: firefighter david ami tuinaji is from remission from a type of nasal cancer. they hope the machines will help remove carcinogens along with fears of serious illness. >> i never ever thought when i swore in, rose my right hand and swore in to be a firefighter that i would have to think about the oncology waiting room. >> reporter: installation of the machines is set for mid- january after the city's department of public works grants the proper permits. reporting live in san francisco, david stevenson, ktvu channel 2 news. >>> a state of art tunnel is open to bicyclists. the cost to convert the old train tunnel was $27 million. some 800,000 bike trips will be made through that tunnel each year. >> it may not be exactly perfect but this weekend looks pretty good compared to what we've had, right mark. >> at least i can officially say no rain clouds for your bay area weekend. just some fog to deal with. the significant rainfall up to the north of the bay area, we still have some lingering clouds in place. and the most recent observation reporting rain. san francis