BioWatch currently operates on an estimated annual budget of $85 million, and the annual maintenance cost of monitoring a single city is reportedly $1 million.
It doesn't make it clear on the link you posted, but I would assume it's annual gen 2 costs.
85 million for 2013 to run Gen 2.
89 million for 2013-2014+ for whoever gets Gen 3, Phase 2, Stage 1 contracts (announced by end of June).