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2008-245
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2008-245
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Last modified
4/7/2016 2:13:41 PM
Creation date
10/1/2015 12:27:53 AM
Metadata
Fields
Template:
Official Documents
Official Document Type
Work Order
Approved Date
08/12/2008
Control Number
2008-245
Agenda Item Number
12.J.3
Entity Name
Camp Dresser & McKee
Subject
Work Order No10 Wellfield Maintenance and Management Services
Area
North and South County RO Water Treatment Plants
Supplemental fields
SmeadsoftID
7513
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TASK 2. 0 WELI,/WELLFIELD MAINTENANCE PROGRAM DEVELOPMENT <br /> CDM will develop a maintenance program based on the information obtained from staff in Task <br /> 1 . 0 . The maintenance program plan will identify a phased approach to implementing a <br /> maintenance schedule to address each of the nine wells over the next five years, or as issues <br /> arise. <br /> This task will include gathering the maintenance history on each well, including date of last <br /> chemical treatment, last service date for major appurtenances, and productivity/ water quality <br /> trends to establish the current conditions of each well for prioritizing the order for maintenance . <br /> This will also include assessing the condition of the wellhead at each monitoring well and <br /> recommended modifications at each . <br /> The plan will take into account the history of each well and its components (motor, pump, <br /> instruments, etc .) and recommend an estimated date for repair/ replacement/ refurbishing/ well <br /> rehabilitation based on the age of the well/ appurtenances, the overall performance of the well, <br /> and the operational needs of the WTP. The plan will also include recommended maintenance <br /> activities for the monitoring wells at each of the WTPs . <br /> Preparation of the plan will include the following subtasks . <br /> Subtask 2 . 1 Data Collection <br /> CDM will prepare a data request letter for use in gathering historical information about well <br /> rehabilitation activities performed in the past, dates of most recent maintenance events <br /> (refurbishing of pumps/ motors, etc . ), age, make and model of existing instrumentation, <br /> equipment/ apparatus and other necessary data not already in CDM' s possession. Data <br /> collection will include one meeting with staff to discuss the information requested and/ or <br /> provided prior to moving forward with the maintenance program development. <br /> Subtask 2 . 2 Draft Plan <br /> CDM will use the data/ information collected in Task 1 . 0 and Subtask 2. 1 to establish the <br /> necessary maintenance items and the sequence of implementation based on the condition of <br /> existing facilities . The draft Plan will include recommendations for daily, weekly, monthly, <br /> annual, and 5-year monitoring and maintenance activities for each well site. Anticipated <br /> activities include video taping of each well, removal of the pump assembly for visual <br /> inspection, chemical treatment, etc . The plan will also include recommendations for upgrades <br /> and improvements that may increase productivity of the wells and aide in ease of operation. <br /> Such recommendations may include frequency of calibration of key instrumentation <br /> equipment/ apparatus, replacement of equipment/ apparatus and corresponding SCADA <br /> upgrades to improve trending capabilities to track specific capacity, scheduled replacement of <br /> older components/ appurtenances, etc . CDM will provide a draft plan to the County for review <br /> and comment. In an effort to promote conservation of resources, the draft plan will be <br /> produced in a 2-sided format and CDM will limit the number of hard copies of the draft plan to <br /> two . CDM will provide a CD containing a portable document format (PDF) of the plan for <br /> electronic review by additional parties . <br /> Subtask 2 . 3 Final Plan <br /> Upon receipt of comments from County staff, CDM will finalize the Wellfield Maintenance <br /> Program plan. The final plan will include reporting forms for the recommended daily, weekly <br /> and monthly maintenance activities . These forms will be provided in both hardcopy and <br /> A-2 jb1800.doc <br />
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