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McGM <br /> A S S O C I A T E S <br /> July 5,2012 <br /> Mr. Christopher Stike <br /> Project Manager <br /> JF Wilkerson Contracting Co.,Inc. <br /> Post Office Box 183 <br /> Morrisville,North Carolina 27560 <br /> RE: Brookhollow Pump Station Changes <br /> BuckhorwEfland Sewers <br /> Orange County,North Carolina <br /> Dear Mr. Stike: <br /> We believe that we are at the point of having final plans for the proposed changes to <br /> modify the Brookhollow pump station and associated force main for the subject project. <br /> Please find attached revised plan sheets E7.0,E7.1, E7.2, E3.0, E3.1, and E2.0. Changes <br /> to those plan sheets have been clouded or printed in red. Further, the technical specifications for <br /> the pump and electrical shall be modified as follows: I <br /> • Proposed pumps shall be 550 gpm at 110' TDH, 50 horsepower. <br /> • Engine-generator set shall be rated for :150 kW at 0.8 power factor, with a <br /> minimum starting KVA at 15%voltage dip of 600 KVA <br /> • The two (2) circuit breakers specified to be 3 pole, 3 phase, 90-amp shall be 250 <br /> amp,from the generator and utility service. The generator mounted circuit breaker <br /> shall also be 250 amp. <br /> • The specification requiring the engine to.be 4 cycle,276 cubic inch displacement, 1� <br /> 1800 rpm shall be deleted. <br /> • The sub-base fuel tank for the generator shall be 500 gallon capacity in lieu of <br /> 227 gallon. <br /> • The automatic transfer switch shall be 200 amp in lieu of 150 amp. <br /> There have been some additional plan changes since you last provided pricing, so please <br /> review and provide updated pricing. j <br /> I <br /> I <br /> i <br /> Engineering • Planning • Finance <br /> McGill Associates,P.A.•P.O.Box 1136,Hickory,NC 28603•124019`"St.Lane,NW,Hickory,NC 28601 <br /> Office:828-328-2024•Fax 828-328-3870 <br />