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Task 3. 1 - Construction Plans — General Location and RW Piping <br /> PBS&J will prepare construction plan sheets for the addition of the three new wells showing well <br /> locations, raw water piping and connections to existing well piping to the plants, and new access <br /> easements and/or roadways to the new wells. <br /> Task 3.2 - Construction Plans — Well Enclosures <br /> PBS &J will prepare construction plan sheets for the new enclosures around the three new wells. <br /> Enclosures will be concrete block construction with seamless metal roofs. Enclosures will house the <br /> entire well head assembly up to and including the flow meter and all control valves. Access to the <br /> pump and motor will be through an overhead door on the side of the enclosure and through a roof- <br /> mounted access hatch. Electrical power and control systems will be located inside each enclosure. <br /> These plans will rely significantly on the existing design being completed for the current three wells. <br /> Task 3.3 - Construction Plans — Mechanical Piping <br /> PBS&J will prepare construction plan sheets for the installation of the well pump, motor, piping, <br /> valves, and fittings. Design will be similar to existing wells, providing an automatic means to <br /> blowoff initial well volumes, allow air to escape during well start, and allow vacuum to be relieved <br /> during well shutdown. Well head piping will be above ground and include a flow meter for each <br /> well . These plans will rely significantly on the existing design being completed for the current three <br /> wells . <br /> Task 3.4 - Construction Plans — Electrical and Instrumentation <br /> PBS&J will prepare construction plan sheets for providing electrical power to each new well site and <br /> allow remote control and operation of the new wells from its associated treatment plant. Power is <br /> expected to be separately supplied and metered to each site . Emergency power for well 8 will be <br /> delivered from the North Water Plant. Emergency power to wells 7 and 9 will be through plug-in <br /> receptacles from portable generation equipment already owned by the County. Control will be <br /> through additions to the plants ' existing telemetry system. Control specifications will include <br /> software modifications to the plant control system. These plans will rely significantly on the existing <br /> design being completed for the current three wells . <br /> Task 3.5 - Specifications <br /> PBS&J will prepare technical specifications related to the project and will incorporate County <br /> standard "front-end" (Division 0- 1 ) specifications. These specifications will rely significantly on the <br /> existing design being completed for the current three wells. <br /> Task 3 .6 - Cost Estimating <br /> PBS&J will prepare estimates of probable construction cost to be submitted with the 60%, 90% and <br /> bid documents . <br /> Task 3.7 - County Reviews <br /> PBS&J will submit up to 5 sets of progress contract documents at approximately the 60% and 90% <br /> levels of completion. PBS&J will attend a single review meeting with IRC staff for each progress <br /> CAF%wix �Envitonntemal INDIAN_RIV CR_COU RC W WW20UC"002_CURWells'dll_Propwals\IA_PioNsalsJ new wells SOMAltachment 111260].doc <br /> L st Revised 11262007 1 28 PM <br /> 5 <br />