I'm tired of hearing Dodgy Dan and Chairman Dan, since it's just name calling the government. There's no need for it. All forms of government have their faults and their strong points. Daniel Andrews well whether you like him or not, he has pretty good leadership skills and knows what the people want (infrastructure, jobs, good education and health). To be honest he's not a perfect leader, but definitely not an incompetent one. He obviously works hard especially with policy making and seeing what works and doesn't. Clearly has a passion at his job, and great at persuading the public on his ambitious agenda.
Obviously the government and the private consortium has hit some issues relevant to the West Gate Tunnel. All I can blame the government for in terms of the West Gate Tunnel project was they formed a deal with Transurban when they were in opposition, without
public knowledge until after the state election. A political decision that is costing them scrutiny right now. Transurban did take the deal the government, well knowing the challenges beforehand and can't take responsibility of not managing the PFAS soil issue properly. They are definitely most responsible in this situation.
Don is incorrect with the location of the tunnel, the tunnel doesn't go under the Yarra river at all, it comes up at the surface just before the Maribyrnong river and bridges over that river. The soil issue is due an incident where there were significant industrial fires in Coode Island and used PFAS to contain the fire, and this has been found in the soils near where they dug out the soil at Yarraville.
The 3 billion dollar blowout figure for Metro Tunnel is probably on the high-end, It'll be more within the realms of a 1-1.5 billion dollar extra amount by the end of the project. There is nothing concrete about it and it'll be noted later when the government strikes a deal with the Cross Yarra partnership consortium.
Hope this really is informative. Just a little note, while I'm not perfectly satisfied with the current government, but yeah the current idea of the government to spend 2.7 billion dollars on many small projects is actually a smart response, they can be delivered ASAP, with jobs coming right away, and small projects deliver higher benefits with low risk. Something like the SRL, while is long term, would do little in terms of getting a pipeline of jobs straight away.