Title
Consider/Discuss/Act on a Resolution Authorizing the City Manager to Execute a Contract Amendment to the Professional Services Contract with Freese and Nichols, Inc. of Fort Worth, Texas for Additional Professional and Engineering Services Related to the Water System Nitrification Action Plan Project - Phases 2 and 3
Summary
COUNCIL GOAL: Operational Excellence
MEETING DATE: December 6, 2016
DEPARTMENT: Public Works
CONTACT: Morgan Dadgostar, PE, Water Utilities Superintendent
Paul Sparkman, Assistant Director of Public Works
David Brown, PE, Director of Public Works
RECOMMENDED CITY COUNCIL ACTION:
* Approval of the Resolution.
ITEM SUMMARY:
* This Resolution authorizes the City Manager to execute a contract amendment with Freese and Nichols, Inc. to provide additional professional and engineering services related to the Water System Nitrification Action Plan Project - Phases 2 and 3 for an amount not to exceed $110,000.
BACKGROUND INFORMATION:
* The City of McKinney receives treated water from the North Texas Municipal Water District. The treated water is disinfected by a chloramination process that provides for a longer lasting chloramine residual. Nitrification is a process that can occur in water systems that use chloramine for their residual disinfectant.
* The Texas Commission on Environmental Quality (TCEQ) requires that any water system distributing chloraminated water must create a Nitrification Action Plan.
* Nitrification can degrade a distribution system's water quality and negatively affect regulatory compliance. Nitrification increases the rate at which the chloramine residual decays. By measuring the nitrite and nitrate levels at various locations throughout the distribution system, we will be able to identify those areas of the water distribution system where we will need to increase/adjust our maintenance practices to address these matters.
* Through a qualified-experience based selection process, Freese and Nichols...
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