NASA/Goddard Space Flight Center, Code 219, Greenbelt, MD 20771

A -- STRATOSPHERIC GENERAL CIRCULATION WITH CHEMISTRY MODELING (SGCCM) AND ATMOSPHERIC CHEMISTRY AND DYNAMICS (ACD) SOL RFO5-61931-272 DUE 060600 POC Michele Rook, Contracting Officer, Phone (301)286-4815, Fax (301)286-1760, Email Michele.C.Rook.1@gsfc.nasa.gov WEB: Click here for the latest information about this notice, http://nais.msfc.nasa.gov/cgi-bin/EPS/bizops.cgi?gr=D&pin=51#RFO5-6193 1-272. E-MAIL: Michele Rook, Michele.C.Rook.1@gsfc.nasa.gov. NASA/GSFC plans to issue a Request for Offer (RFO), on a sole-source basis to SM&A Corporation East. This procurement will extend the period of performance under Contract NAS5-32585 for an additional 4.5 months beyond the current end date of the contract (July 15, 2000). This extension is required to meet critical milestones while a competition is conducted for the follow-on effort. Under Contract NAS5-32585, the Contractor provides support to the Stratospheric General Circulation with Chemistry Modeling group and to the Atmospheric Chemistry and Dynamics group. This support is provided in the following areas: mathematical and computer modeling of dynamic, radiative, chemical processes, and plasma processes in Earth's atmosphere. The contractor also uses the data and computer models to analyze the dynamics and constituent structure of Earth's atmosphere. During this extension period, the contractor shall complete the following critical milestones: 1) deployment of the lidar trailer system to Canadaand New Zealand for a field campaign that involves scientists, from universities and other government agencies, who will operate instruments to measure atmospheric parameters; 2) a two to three week campaign in sourthern Africa to launch sones designed to measure atmospheric composition in the troposphere; 3) participation in a validation of ozone sondes in Germany. SM&A Corporation (the current source of the required services) is the only responsible source with the specialized knowledge and experience required to perform the above requirements and meet the critical milestones. No other known source can meet the above critical milestones. Award to any other source would result in unacceptable delays in the fulfillment of NASA Goddard's requirements. The statutory authority for this sole-source procurement is 10 U.S.C. 2304(c)(1) -- Only One Responsible Source. However, companies who believe they can provide these services without any detrimental impact to the program schedules supported by this work, should fully identify their interest and capabilities within 15 days after publication of this synopsis. Such capabilities/qualifications will be evaluated solely for the purpose of determining whether or not to conduct this procurement on a competitive basis. A determination by the Government not to compete this proposed effort on a full and open competition basis, based upon responses to this notice is solely within the discretion of the government. See Note 22. The Government does not intend to acquire a commercial item using FAR Part 12. See Note 26. An Ombudsman has been appointed. See Internet Note "B". All qualified responsible sources may submit an offer which shall be considered by the agency. Any referenced notes can be viewed at the following URL: http://genesis.gsfc.nasa.gov/nasanote.html Posted 05/23/00 (D-SN457728). (0144)

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