Mastodon Lake Dredging

The City of Aurora, IL is seeking a qualified contractor for the dredging of Mastodon Lake. This project includes the of dredging of the accumulated sediment from 23-acre Mastodon Lake using hydraulic dredging methods, dewatering and hauling of dredged materials, installation of mechanical mixing and aeration devices, installation of culvert pipes, as well as other miscellaneous appurtenances all in accordance with the plans and specifications.

Phillips Park is considered the jewel of the community. Mastodon Lake, which is in Phillips Park, provides stormwater detention and is used by boaters, anglers and bird watchers and admired by park visitors. However, the Lake has developed an issue with excessive aquatic vegetation which is reducing the aesthetic appeal and negatively impacting the water quality of the Lake.

The City is requesting that bidders provide a proposal for completing the work outlined within the base bid for the improvements included in the plans. The base bid includes the hydraulic dredging of materials and dewatering in up to five locations (Sites 1-5) along the lake within City owned property.

A bid alternative has been identified in the plans that would provide the contractor with the ability to utilize the open space west of the lake (Site 6) to dewater the dredged materials. This Site 6 property is not City owned. The City is working with the property owner to obtain permission to use this area, dewatering in the location identified as a bid alternative is not guaranteed to be available for dewatering.

The intent of the project is to dredge a total of 50,000 cubic yards of wet material from the lake. This volume may be fully dewatered within the Sites 1-5 identified in the based bid, fully dewatered in the bid alternative location (Site 6), or a mixture of the base bid (Sites 1-5) and bid alternative (Site 6) locations. The City may subtract quantities or remove dewatering sites from the base bid if the bid alterative is accepted. The City shall have the right to reject the bid alternative option at their choosing.

Since the City has also published a separate bid for Shoreline Stabilization, the awarded contractors may be required to work concurrently onsite.