REPORT TO THE CITY COUNCIL
May 11, 2017
FROM: THOMAS C. ESQUEDA, Director
Department of Public Utilities
THROUGH: BRIAN S. SPINDOR, PE, Assistant Director
Department of Public Utilities
BY: KEVIN L. NORGAARD, PE, Supervising Professional Engineer
Department of Public Utilities - Utility Engineering Planning
SUBJECT
Title
Award a professional engineering services contract for $57,000 with a $2,000 contingency to Stearns, Conrad and Schmidt Consulting Engineers Incorporated of Long Beach, California for the design of a conditioned digester gas pipeline to the eastern property line at the Fresno/Clovis Regional Wastewater Reclamation Facility (Council District 3)
Body
RECOMMENDATION
Staff recommends the Council approve the agreement award to Stearns, Conrad and Schmidt Consulting Engineers Inc., (Stearns), a design contract necessary to divert conditioned digester gas from the digester gas conditioning system to the eastern property line of the Wastewater Reclamation Facility (RWRF).
EXECUTIVE SUMMARY
The City of Fresno wastewater treatment system includes an anaerobic digestion process that produces digester gas. Analysis of projected population and industry growth in the City indicate an increase in gas production which will exceed the beneficial utilization capacity at the wastewater Facility. The design and installation of this pipeline will provide the Facility an additional beneficial disposal option for the gas in lieu of burning it in the waste gas flare.
BACKGROUND
The Facility has successfully operated an anaerobic digestion process for approximately sixty-years. The gas generated by the anaerobic digestion process is currently conditioned to near pipeline quality and made available for use in the Facility power generating turbines, hot water boiler, or both. There are instances when for operational convenience these two options are not available and the digester gas must be flared (wasted) to atmosphere. The wasting of dige...
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