Defense Nuclear Agency, 6801 Telegraph Road, Alexandria, VA 22310- 3398

A -- ATMOSPHERIC TRANSPORT ENHANCEMENTS SOL DNA001-95-R-0032 POC Brian Wilt, Negotiator, (703) 325-6960, Scott Morton, Contracting Officer, (703) 325-1200. This procurement is to be made in accordance with DFARS Subpart 235.70, Research and Development Streamlined Contracting Procedures. Offerors are advised that a conventional solicitation will NOT be issued but that the solicitation will appear in a subsequent edition of the Commerce Business Daily (CBD). The Defense Nuclear Agency (DNA) is seeking support for the further development of Hazard Assessment Capability code (HASCAL)/Second-order Closure Integrated PUFF (SCIPUFF). SCIPUFF provides a means to transport hazardous Nuclear, Biological and Chemical (NBC) materials in the atmosphere. Deterministic and probabilistic predictions of integrated doses and concentrations are provided faster than real time given realistic time varying weather forecasts and terrain elevation in three dimensions. This transport tool is embedded in HASCAL which provides NBC source terms, interfaces with meteorological data, effects predictions, and a Geographic Information System (GIS). This effort is necessary to provide additional SCIPUFF capabilities for modeling phase change for chemical materials, interactions for dense gas, clouds/precipitation/washout, and other improvements. Another requirement is support for further development of HASCAL, modifications to satisfy user in the loop requirements, and advanced concept technology demonstrations. Verification and validation of more complex cases are also required. All contractor personnel will require a DoD security clearance of SECRET. Offerors must provide address information to the contract negotiator in order to be included on the mailing list in case any supplemental package and/or amendments are issued to the solicitation which will appear in a subsequent edition of the Commerce Business Daily (CBD. Address information must be in writing. Faxes are acceptable to the attention of Brian Wilt/AM-2 at fax number (703) 325-9295. Information on DNA solicitations, already released, can be obtained by calling the DNA Hotline at (703) 325-1173. Reference Synopsis 95-41 (0088)

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