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ATTACHMENT "A" JUSTIFICATION OF CHANGE ORDER NO. 1 South Beach Water System Improvements - Phase I Indian River County, Florida ITEM 1 - Electrical Modifications In order to provide electrical power to the Potable Water Booster Station, Fire Booster Station and existing Elevated Tank, it is necessary to construct electrical lines underground from power poles along AlA to transformer pads located at the structures and from there to specific motor control centers. The intent of the original construction drawings and specifications required the electrical service to be supplied over- head. The change is warranted due to the requirements of the City of Vero Beach's Electrical Engineering Department. The Vero Beach Electrical Department will be supplying power to all major electrical components. See Attachment "B" for a breakdown of the estimated quantities. ITEM 2 - Chlorination System -- The Department of Environmental Regulation has requested the removal' of the chlorination system while the system is under use by the City of Vero Beach.. This request is made to prevent the potential formation of trihalomethanes in the water distribution system. ITEM 3 - Painting of Ground Storage Tank The painting schedule in the contract documents required the painting of the interior of the ground storage tank. It has been determined that the painting of the interior of the tank is not required and therefore can be deleted. ITEM 4 - Silent Check Valve Installation At the suggestion of Indian River County, a deduct item for the use of silent check valves was incorporated into the bid schedule of the South Beach project. This deduct item includes the substitution of all hydrau- lically actuated and lever & weight check valves with silent checks. These valves should offer a more maintenance free operation. HEALTH INSURANCE The Board reviewed the following memo dated 5/24/83: 22 JUN 1 1983 PAGE" L