Site work for a water / sewer project in Aurora, Colorado. Completed plans call for site work for a water / sewer project.

The WORK of this project consists of demolition and replacement of four (4) existing manholes; rehabilitation of six (6) existing manholes; coatings and linings; external drop piping; bypass pumping; dewatering; traffic control; pavement patching and site restoration. The existing manholes and associated pipes are in operation. Reference Number 0000352615 During routine inspections, Aurora Water Operations found significant hydrogen sulfide damage and deterioration in the manholes around 19th Ave between Florence St and Elmira St. High levels of hydrogen sulfide in sanitary sewers can cause concrete corrosion over time. Corroded sewer pipes, manholes, and other structures make the whole sewer system vulnerable to pipe collapses, leaks, infiltration, root invasion, and other serious issues. The sanitary sewer system in this area was installed in the 1950s and no record drawings exist for the infrastructure. The manhole material ranges from precast concrete to brick manholes. The actual construction dates for the manholes are unknown. Aurora Water Engineering worked with Operations to gather a list of structures that needed a more detailed inspection. The manholes were located around 19th Ave and near North Sable Boulevard adjacent to Tollgate Creek, a manhole at the intersection of Galena Street and East Cherokee Trail, and on East 13th Avenue between Joliet Street and Kingston Street. Aurora Water, with engineering firm Mott MacDonald, has determined that four manholes will need to be replaced with another six in need of rehabilitation. This will include the installation of an external drop for one manhole, coating and lining of affected areas, and replacements of whole manholes when necessary to restore the integrity of the system. Question Deadline 05/30/2024 at 2:00 PM MT Questions are submitted online No, Any questions must be submitted in writing by email to Zach Tredwell Torpie, Project Manager, at ztredwel@auroragov.org, and to Nathan Jones, Contract Administrator at njones@auroragov.org. The Contract Documents require that all work be Substantially Complete by May 31, 2025 with Final Completion by June 30, 2025 Failure to complete the work as prescribed shall be considered as a Breach of Contract and subject to Liquidated Damages which are $1,200.00 per day. Each Bid shall be accompanied by an appropriate guarantee in the form of a Bid Bond in an amount of not less than five percent (5%) of the amount of the Bid. In addition, the bid guarantee shall be accompanied in the same file as the bid. The estimated cost for this project is from $1,640,000.00 to $1,804,000.00. *The value for this project is based on a financial range. The value is listed as the highest possible cost from the range provided by a stakeholder or official project document. The City reserves the right to reject any and all Bids, to waive any and all informalities and the right to disregard all nonconforming, nonresponsive or conditional Bids.