The City is requesting Bids for Drainage Maintenance that will require Seller to excavate, slope to grade ditches for drainage, to replace or adjust pipes under driveway entrances and under streets in order to establish a drainage way for storm water run-off; to remove siltation and debris from lined channels and detention ponds to maintain a drainage way for storm water run-off; to fill, shape, and protect eroding areas in ditches, creeks, channels, detention ponds and other City owned properties; and to clear and grade these areas to make them maintainable. All work will be within the City of Tulsa. There is no guaranteed amount of work to be performed. Included in this document are specifications of work to be performed and types of restoration to be provided.