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Change Order # 1 - South RO Plant Improvements ' <br /> Quotation Descri tionReason for Chane Cost <br /> Replace short 24 " DIP spool with Megaflange adapter to high service <br /> pump suction header, cut and remove concrete pipe trench to allow spool Accelerated corrosion from zinc orhophosphate <br /> injection in <br /> 4R replacement the pipe could cause sudden failure of suction piping to HSP $ 11, 888 . 36 <br /> Replace the two existing 14 " buried gate valves on storage tank effluent <br /> pipes ( owner to furnish 14 " gate valves with actuators ), including Valve actuators are inoperable and require closure <br /> to replace <br /> 7R excavation , compaction , and restoration the 24 " spool $ 10 79L60 <br /> Replace 16 " 316 stainless steel permeate piping, and restore sample lines Corrosion from acid injection has left the <br /> pipe in poor <br /> 8 from permeate header condition, acid leaking on pipe $ 221868 . 31 <br /> Provide temporary location of HSP variable frequency drive to allow full <br /> removal of existing MCC-2, including control wiring and temporary service Failure of MCC-2 has prevented phasing of MCC-2 installation <br /> 10R to VFD and subsequent requirement of the temporary use of VFD $ 8, 286 . 54 <br /> NETA testing of main switchgear, ATS, generator breaker, utility main # 1, <br /> 2, and 6, MCC-3 , and MCP, including infrared survey of contactors; Corrosion in electrical room warrants testing <br />of main <br /> 11 cleaning of corroded equipment listed herein , and test reports to owner components serving plant $ 21 <br />, 978 80 <br /> $ 75 , 813 . 61 <br />