Department of the Interior, U.S. Geological Survey, 345 Middlefield Road,Mail Stop 285, Menlo Park, CA 94025-3591

66 -- STABLE ISOTOPE RATIO MASS SPECTROMETER SOL 00WRSS0001 DUE 020800 POC Phyllis Michel, Contracting Officer, (650) 329-4163, FAX (650) 329-5480 E-MAIL: to contact the contracting officer by E-mail, pmichel@wr.usgs.gov. Amendment 1 to RFP 00WRSS0001, originally posted on CBDNet 1/18/2000 and published in printed CBD on 1/20/2000. The following clarifications to the description of the isotope mass spectrometer system are hereby incorporated. (1) The system may analyze water samples with an automated equilibrator operating under either (or both) dual inlet or continuous flow modes. (2) The "automated, multi-sample, on-line pyrolysis apparatus" shall be an entire Elemental Analyzer type system. (3) "Option to fit up to 8 collectors and acquire data from up to 8 ion beams simultaneously during a run" means that the system must be capable of being fitted with additional collectors; however, such additional collectors and any related equipment should be separately priced, if offered. All other information in the original publication is unchanged, and the date for receipt of proposals remains 2/8/2000. Posted 01/25/00 (W-SN418917). (0025)

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