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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 />