The Contractor shall furnish all labor (to include personnel certified to enter confined spaces), materials and equipment necessary for properly cleaning various size structures and equipment in confined space entries , and requires the application of reasonable initiative and independent judgement. Types of structures shall include both Sanitary Sewer and Stormwater systems. Structures shall be cleaned using hydraulically-propelled, and/or high velocity water jet sewer cleaning equipment capable of removing sand and/or debris in surcharged conditions. Structures shall be defined as a tank, basin, pond and other types of structures including, but not limited to channels, equalization tanks, clarifiers, aeration basins, oxidation ditches, anoxic tanks, filter media bays, contact basins, digesters, headworks, grit chambers, containment units, thermal process tanks, package plants, reject ponds, lift stations, backwash basins, splitter boxes, baffle boxes, manholes, sumps or sediment traps.
