Excavation and removal of sediment from Ponds 3 and Pond 4 located along Lena Gulch within the Denver West Office Park; pond bank stabilization, riprap installation, replacing three (3) existing headgates with new headgates; repair or replacement of all landscaping and irrigation systems disturbed during the sediment removal project with like quality; protection of all infrastructure within the construction zone (including main irrigation features, utilities, storm lines, and other features); water management and controlling erosion; transportation and disposal of the sediment to a site located at 1301 Meadowsweet Road, and management of water that drains from the disposed sediments, without liability to the Owner; grading of the disposal site and disposed sediments per project drawings; other pertinent work shown on the project drawings; and design alternates approved or removed from the project at direction of Owner.