Title
Resolution to Award a Construction Contract to Process Piping & Equipment, Inc. for Wastewater Treatment Plant Improvements ($363,700.00)
Memorandum
Your approval is requested to award a construction contract in the amount of $363,700.00 to Process Piping & Equipment, Inc. (PPE) to construct the Secondary Effluent Pump Replacement Project (SEPRP) at the City's Wastewater Treatment Plant (WWTP).
There are six secondary effluent pumps at the WWTP, each with a rated capacity of approximately 17 million gallons per day. These pumps transport wastewater from secondary (biological) to tertiary (sand filter) treatment, as well as enabling the plant to discharge final treated effluent to the Huron River when high flow conditions in the river prevent discharge by gravity. All six pumps are critical system components that were installed during the 1977 plant expansion. Over the past four years, three of the secondary effluent pumps have failed. One of the pumps was irreparable and the other two pumps were repaired but are not reliable for long-term use. The remaining three pumps are functional but in a worn condition and at high risk of failure in a similar manner. A permanent failure of one additional pump would put the WWTP at risk of permit violations and sanitary overflows during high flow periods characteristic of significant rain events.
Due to the nature of the failures, the criticality of the pumps, and the worn condition of the pumps that makes long-term repair impossible, replacement of all six pumps was determined to be the most reliable and cost effective remedy. An attempt to include replacement of these pumps into the ongoing Facilities Renovations Project (FRP) at the WWTP was rejected by the Michigan Department of Environmental Quality (MDEQ) because they were not part of the project plan approved by MDEQ. Improvements to the Tertiary Filter Building, which houses the secondary effluent pumps, were not included in the FRP because the...
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