Explanation
1. BACKGROUND: This legislation authorizes the Director of Public Utilities to enter into a professional engineering services agreement with CHA Consulting, Inc., for the Hap Cremean Water Plant (HCWP) Lime and Soda Ash Dust Collection System Improvements Project, in an amount up to $131,300.00, for Division of Water Contract No. 2068.
Lime and soda-ash dust must be controlled for environmental, health, and safety reasons. A majority of the HCWP lime and soda-ash handling equipment, piping and controls are more than thirty years old and are at the end of their useful life. Frequency of lime/soda-ash dust releases problems is increasing, impacting the plant’s ability to safely and properly perform chemical unloading.
The overall agreement will provide preliminary design, detailed design, and engineering services during construction for replacement of mechanical equipment, improvements to the controls, and modifications to the pneumatic piping for the lime and soda-ash offloading and storage systems at the HCWP. Work will include conducting site visits to identify existing conditions; including chemical transport lines, chemical offloading controls and associated dust collection systems; performing engineering evaluations; and developing a preliminary design report. Some ancillary modifications may be required to facilitate the work above but are not anticipated to be substantial components of the project.
The improvements are directly related to the HCWP treatment process, which services multiple community planning areas (Planning Area - 99 Citywide).
2. ECONOMIC IMPACT/ADVANTAGES; COMMUNITY OUTREACH; PROJECT DEVELOPMENT; ENVIRONMENTAL FACTORS/ADVANTAGES OF PROJECT:
This project is necessary as reliability in the chemical delivery is vitally important to the lime-soda softening treatment process at HCWP. Lime and soda-ash dust must be controlled for environmental, health, and safety reasons.
A majority of the HCWP lime and soda-ash handling...
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