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Subtask 2 . 4 — Operational and Start-up Services <br /> During this phase, CDM will provide services to the County to conduct a systems checkout, <br /> including troubleshooting of equipment and instrumentation installed as part of the project. <br /> CDM will provide on-site advice and troubleshooting throughout the start-up . <br /> Once the new well and associated facilities are fully operational, CDM will assist County staff <br /> with operation fine-tuning. All contract documents and computer disks will be catalogued and <br /> delivered to the County. <br /> Task 3 — Sand Separator <br /> County staff indicated that micron filter elements upstream of the membrane skids required <br /> frequent change due to sand from the raw water production wells . Field investigations by <br /> CDM and County staff identified wells that indicated elevated frequency of sand . CDM has <br /> investigated various sand separation equipment for potential use at the facility. CDM assisted <br /> County staff with pilot testing of a small-scale unit and determined that installation of a full- <br /> scale system would be of great benefit to the operation of the facility. <br /> Subtask 3 . 1 — Technical Specification Preparation <br /> CDM will prepare a technical specification for a full-scale sand separator system for raw water <br /> feed to the facility. The specification will be provided to the County for incorporation into <br /> ongoing work currently contracted . <br /> Schedule <br /> CDM to perform services as follows : <br /> Task/Subtask Estimated Duration <br /> (From Authorization) <br /> Task 1 — Rehabilitation of Existing Wells <br /> Plans and Technical Specifications — Draft <br /> Bidding Services Completed 1 .5 months <br /> Construction Services Completed 3 . 5 months <br /> 7.5 months <br /> Task 2 — Replacement of Well No 3 <br /> Design and Permitting <br /> Bidding Services Completed 3 months <br /> 5 months <br /> Construction Services Completed <br /> Operational and Startup 9 months <br /> 10 months <br /> Task 3 — Sand Separator Specifications 1 month <br /> B -8 <br /> mh1092.doc <br />