City of Brooklyn Park, Minnesota:  The City has used biodiesel blends since 1999 in its fleet of over 100 vehicles, including fire trucks, utility and police vehicles.  According to Steve Lawrence, Superintendent Operations & Maintenance for the City, they have had no weather issues at all with B20.   The reason they made the switch is simple, according to Lawrence, “to eliminate the cloud of black soot that used to fill the garage when we started up our vehicles each morning.  With biodiesl, the sooty cloud is gone and the air the drivers breathe is cleaner.  It was in everyone’s best interest to get rid of the black cloud.”