alabasterjar
Sharpshooter
I am not familiar with any such laws. My Google-Fu doesn't bring up anything, but that would certainly match the mindless thought pattern of the federalies...I got the impression from Mr Ciyou's book that weapons of any kind are prohibited in water/wastewater treatment facilities due to some federal antiterror law. As I recall it was due to the availability of hazardous chemicals at such locations (ie. Chlorine, sulfur dioxide, etc.). I don't know if it's still in effect, but I was interested in it at the time because my previous career required frequent visits to those facilities.
If you happen to find any additional information on this, I am definitely interested.