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

B -- PROVIDE MEASUREMENTS OF VARIOUS MERCURY SPECIES. SOL 9-7410-5292 DUE 060399 POC Trinidad F. Biando (650) 329-4176 E-MAIL: tbiando@wr.usgs.gov, tbiando@wr.usgs.gov. The following additional information is provided: Because of the low level of detection Hg contamination must be monitored in the laboratory atmosphere and water supply on a routine basis so as to preclude contamination. Mercury analysis is to be done with state of the art cold vapor atomic fluorescence spectrometer in order to provide the necessary sensitivity. Similar state of the art analysis for organo-mercury speciation is to be used. Vendor must have successfully participated in the world wide quality assurance study of mercury analytical capabilities and reproducibility and reported in the EPRI sponsored Mercury as a Global Pollutant volume. Vendor will provide consulting advice on sample collecting and preparation prior to analysis and interpretation of data using expertise based on prior, publicly published, studies of estuary sediments. The following analysis are required: a.) 80 ea. Methyl Hg at ng/L level in precleaned glass bottles using ultraclean techniques; b.) 90 ea. Total Hg at ng/Level in pre-cleaned glass bottles using ultaclean techniques; c.) 30 ea. Elemental Hg in pre-cleaned glass bottles at ng/L level using ultraclean techniques; d.) 30 ea.Ionic mercury (Hg++) in water at ng/L pre-cleaned glass with ultraclean techniques; e.) 20 ea. Methyl Hg in precleaned amber foi sediment and precipitates at ng/g using ultraclean techniques; f.) 90 ea ultraclean filtration of water samples. A determination by the government not to compete this proposed contract based upon responses to this notice is soley within the discretion of the government. Information received will normally be considered solely for the purpose of determining whether to conduct a competitive procurement. Interested persons may identify their interest and capability to respond to the requirement or submit quotations. This notice of intent is not a request for competitive quotations. Intended source is Frontier Geosciences, 414 Pontius North, Seattle, WA 98109. All interested parties may respond by close of business June 03,1999. Posted 05/19/99 (W-SN333351). (0139)

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