Seattle Fire Department Ladder 4 being dispatched and responding to 2030 3rd Ave. This was an Aid Response. Time out was 1647 on 1/17/09. Ladder 4 is the busiest Ladder company in the department. Ladder 4 is currently assigned a 1994 Simon / LTI 100 foot tillered-ladder. L4 is quartered in Station 2, which opened …