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 RFO5-12327-272 POC Michele Rook, Contracting Officer, Phone (301)286-4815, Fax (301)286-1760, Email Michele.C.Rook.1@gsfc.nasa.gov -- Dawn M. Fountain, Contract Specialist, Phone (301) 286-3815, Fax (301) 286-1760, Email Dawn.M.Fountain.1@gsfc.nasa.gov WEB: Click here for the latest information about this notice, http://nais.nasa.gov/EPS/GSFC/date.html#RFO5-12327-272. 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 Space Applications Corporation. This procurement will extend the period of performance under Contract NAS5-32585 for an additional 10.5 months (7.5 month basic period and 3 1-month option periods) beyond the curent end date of the contract (8/31/99). This extension is required to meet critical milestones until the follow-on consolidated contract is awarded (8(a)competition). 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. a study of temporal and regional variability in NIMBUS-7 measurements of tropical tropospheric ozone; 2. an aircraft field experiment to study tropospheric chemistry; and 3. a field campaign with the ground based lidar. Space Applications 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 these 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. The Government does not intend to acquire a commercial item using FAR Part 12. See Note 26. See Note 22. An Ombudsman has been appointed. See Internet Note "B". Interested firms have 15 days from the publication of this synopsis to submit in writing to the identified point of contact, their qualifications/capabilities. Such qualifications/capabilities will be used solely for the purpose of determining whether or not to conduct this procurement on a competitive basis. A determination by the Government to not compete this proposed effort on a full and open competitive basis, based upon responses to this notice is solely within the discretion of the Government. 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 07/19/99 (D-SN356056). (0200)

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