We try as much as possible to have real numbers and facts to back up what we say. Some of these number are estimates, some are calculated from what Austin Water Utility tells us. 

Astonishingly, we have had to do these calculations ourselves as AWU has not been particularly forthcoming with any of the disturbing details behind its assurances that "all will be well".

So here is our spreadsheet for rock & truck volumes, and another one for the cost of alternatives that AWU should have explored in depth a long time ago.