Title
Consider/Discuss/Act on a Resolution Authorizing the Interim City Manager to Execute a Contract and Any Supplemental Agreements for Engineering Services for Water System Evaluation for Nitrification Effects - Phase 1 Project
Summary
COUNCIL GOAL: Operational Excellence
Safe & Secure Community
MEETING DATE: September 1, 2015
DEPARTMENT: Development Services/Engineering
CONTACT: Paul Tucker, PE, Senior Utility Engineer
Gary Graham, PE, PTOE, CIP and Traffic Manager
RECOMMENDED CITY COUNCIL ACTION:
* Approval of the Resolution.
ITEM SUMMARY:
* This Resolution authorizes the Interim City Manager to execute a contract in the amount of $28,000, as well as all required supplemental agreements thereto, with Freese and Nichols, Inc. to provide professional engineering services for the Water System Evaluation for Nitrification Effects - Phase 1 Project, for a total aggregate contract amount, inclusive of any supplemental agreements, not to exceed $32,000.
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.
* Nitrification is a microbial process that converts ammonia and similar nitrogen compounds into nitrite and nitrate. Nitrification can degrade a distribution system's water quality and negatively affect regulatory compliance. One of the symptoms of nitrification is a decreased/low chloramine residual during the hot summer months. 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 can determine the areas of the system to increase/improve our maintenance practices.
* The Water System Evaluation for Nitrif...
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