MITIGATION MEASURES?

I read the Orcem/VMT full page ad in the paper on Sunday and was relieved to learn that Vallejo won't be polluted or harmed in any way by anything they do thanks to "mitigating measures."

I'm not sure how these "mitigating measures" work. To clarify:  Is it like dropping a stink bomb on Councillor Verda-Aliga's house and planting flowers on my front lawn, then her house won't stink?  Did i get that right?

Furthermore, I keep looking for the 200 people who called Councillor Verda-Aliga on the phone to ask her to vote in favor of the cement factory.  I'm always worried there won't be enough seats for them at City Hall when this important subject is on the agenda, yet, i never see them.  i wonder where they are?'  

And why did Councillor Verda-Aliga keep rubbing her hands together, like Lady MacBeth, during the talk about the cement factory?  What's up with that?