66--Amendment #1- RFQ- NY-07-00020

NAICS Code: 334516 The purpose of this amendment is to provide questions and answers as follows: 1) Will the instruments need internal pumps, or will external pumps be provided for the systems that the instruments are being installed into? If the pumps are external, will the NOx analyzer have a separate pump? Also, will the trace CO have a separate higher vacuum pump? Instruments will require internal pumps 2)Are scrubbers needed for the SO2 and CO for background (zero) measurement? No scrubbers for zero are required 3)How is calibration of the instruments going to be performed? Will they be done using the sample port on the instrument or will a separate span and zero port be needed? Calibration will be done through the sample port. Note: Technical questions regarding this RFQ must be submitted by August 17, 2007 . Quotations are due August 27, 2007 at 1:00 pm EDT.