Finally, HART admits that building downtown in the soft soils (and landfill) will require more expensive structural supports and will expose more utilities etc.  The city engineers have known this since around 2008.  All the work done by Parsons Brinckerhoff regarding construction techniques, design criteria, and ridership are problematic and therefore, hidden from the public.  HART pretends they just found out about these problems - they are not telling the truth.