Explanation
BACKGROUND: The Department of Public Utilities, Division of Power and Water will be constructing improvements to Lagoon No. 1 at the Hap Cremean Water Plant. A portion of this work includes construction of new exterior embankments for the lagoon in which the Ohio Department of Natural Resources (ODNR) has classified as a Class II dam. ODNR requires the City of Columbus to apply for a construction permit. Before a permit can be issued, a surety bond must be submitted and accepted by the state. The bond amount shall meet or exceed one-half the estimated cost of construction including construction inspection of the dam or levee.
This overall project provides for the physical removal of sludge from Lagoon No.'s 1, 2 and 3 at the Hap Cremean Water Plant, and for construction of new exterior embankments and interior baffles in the lagoons. This current phase will provide for construction services for the reconstruction of the exterior lagoon embankment and construction of interior baffles on Lagoon No. 1. These improvements, along with the sludge removal under a previous contract, will allow this lagoon to be put back into service. This will provide additional storage for emergency situations due to loss of pumping capabilities and allow for replacement of portions of the sludge line that extends from HCWP to McKinley Quarry. Repairs to the sludge lagoon embankments are necessary to allow for lagoon utilization for sludge storage. The internal baffles will provide improved decantation of the sludge and will significantly increase the useful storage of the lagoon. External embankment repair along Big Walnut Creek will ensure public health and safety by preventing lime/alum sludge from entering the Big Walnut Creek if there were an embankment failure.
The Division of Power and Water will deposit their surety funds into the State of Ohio's State Treasury Asset Reserve of Ohio (Star Ohio) program. Star Ohio allows all Ohio governmental subdi...
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