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OUT 5 1993 ATTACHMENT "B" JUSTIFICATION OF CHANGE ORDER NO. 3 South Beach Water System Improvements — Phase I Indian River County, F1 Item 1 - Pipe. Fittings for New Valves As a result of the deletion of pipe fittings and valves as descti-bed in Item 4, it is necessary to provide and install a 14" and 16" M,J. plug at the points of tie-in to the existing 12" waterline. Item 2 - Installation of New Valves The City of Vero Beach requested the installation of two (2) valves in the supply and discharge piping to and from the Fire Booster Station at the existing 12" waterline located in the AiA right-of-way. This request was made in an effort to isolate the Fire Booster Station system piping from the existing 12" waterline in case of a pipe line break in said system. The City of Vero Beach has supplied to the Contractor, the two valves required for installation. This Item represents the labor cost to install the -valves. Item 3 - Retainer Gland Installation The City of Vero Beach has requested the Contractor to provide and install retainer glands on new and existing valves and fittings in the system as preventative maintenance measures in case of emergency situations such as line breaks. The retainer glands purpose is to securethe valve or fitting to the line so that under a situation of replacing pipe in the system, there is less likely hood of a valve or fitting blowing off under system pressure. Item 4 - Deletion of Proposed Valves & Fittings - It has been determined that the proposed system can operate and function effectively with the deletion of valves and fittings originally intended for installation at the tie-ins at the Fire Booster Station. The deletion of two 10" and one 12" M.J. valve, as well as two reducers and two plugs is warranted in lieu of the 14" and 16" M.J. plugs provided in Item 1. Item 5 - Deletion of Painting Floors in Pumping Stations There are expected long term maintenance problems associated with the use of the portable crane in the buildings as to the effects of that traffic on the painted floor itself. It is recommended the floors not be painted to lessen future repainting which may occur. Item 6 - Deletion of Marblecrete Finish on Exterior of Fire Booster Station. As a result of discussions between the South County Fire District and Indian River County is has been determined the exterior of the Fire Booster Station would be surfaced with a wood finish rather than a stucco or marblecrete finish in an effort to match the exterior of the proposed fire station to be constructed on the same site. The exterior of the building will be surfaced by the contractor constructing the new fire station. T� hii).;y .,`} S 3 *�yY`"°a�A Y _. j �' `t° ' J �+ � G Mw}' •, _ - .✓�.�'�`. _ ? ,i :wi" :•'+S'i'l�i�}L ,�'* - , �i .�. e fb •" ��Q��pyy�(�� g®pj� � Y✓Y�w' . .. .. .. .. L'- t _ r.4 F_