A sediment removal operation has been started in the Still River in Danbury.  The contract was awarded to EnviroConsultants & Recyclers.  Danbury Public Works officials say the project is on schedule and within budget. The contractor has completed the segment north of the Casper Street Bridge, both East and West sides of the Still River.  Sediment is currently being removed from the river bank on the west side of the Still River between Casper Street and Triangle Street. This project has a fall completion date.