Title
Resolution to Approve a Professional Services Agreement with OHM Advisors to Design the Tertiary Filter Clear Well Improvement Project at the Wastewater Treatment Plant, RFP No. 19-13 ($133,000.00)
Memorandum
Your approval is requested for a Professional Services Agreement with OHM Advisors (OHM) in the amount of $133,000.00 for professional engineering services to design improvements for the replacement of damaged and inoperable equipment in the two Tertiary Filter Building clear wells at the City's Wastewater Treatment Plant (WWTP).
The Tertiary Filter Building contains 12 sand filters used for filtration of fine solids from water after secondary (biological) treatment. Filtered water is collected in two clear wells located under the building where the water is aerated before it flows from the clear wells to the ultraviolet disinfection system prior to discharge to the Huron River.
This project is to replace structures and equipment that have reached the end of their useful life and are in need of replacement. Concrete block baffle walls located in the two clear wells have deteriorated and are failing, while the air diffusers are damaged and must be replaced. These structures and equipment are essential to assure the intended operation of the clear wells and provide dissolved oxygen to ensure that the WWTP complies with its discharge permit limits.
Through RFP No. 19-13, WWTP staff solicited proposals for professional engineering services to design the Tertiary Filter Clear Well Improvement Project. WWTP staff evaluated proposals submitted by four professional engineering firms using a quality based selection process that is used by many municipalities, including the City, for procurement of professional engineering services. Each of the proposals was evaluated based on the selection criteria listed in RFP No. 19-13. The top three firms were selected to be interviewed and their fee proposals were opened prior to the interviews. The remaining ...
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