costly
Posted by John Vidale on March 23, 2011 at 10:23:29:

Yes, Chris, the current estimate is $130M for the west coast, which is actually in line with the original ANSS proposal, which has not yet been fully funded. It takes lots of seismometers, reliable and redundant telemetry, and full time maintenance and monitoring.

Barbara, Bill works in the PNSN, so I do know him.