U.S. Environmental Protection Agency, 26 W. Martin Luther King Dr., Cincinnati, OH 45268

A -- VENTILATION PATTERN INPUT MODELS FOR EXPOSURE AND INHALATION DOSIMETRY MODELS SOL RFQ-OH-99-00124 DUE 041699 POC Hans Schellhas (513) 487-2055 or Marie Nichols (513) 487-2054 WEB: na, na. E-MAIL: U.S. EPA -- Cincinnati Contracts Management Division, schellhas.hans@epamail.epa.gov. Under authority granted in FAR 6.302-1, the U.S. Environmental Protection Agency intends to negotiate on a sole source basis with Ted Johnson to perform development of ventilation patterns for various demographic cohorts differing in attributes such as age sex and disease status and provide them as software input modules compatible with other models under development by the Agency. The modules must be comparable to the state-of-the-science for hazardous pollutant and Superfund assessments, ie., generalized to larger event durations (e.g., 4 hour averages) from more sophisticated hour-by-hour analyses that have been performed in support of the National Ambient Air Quality Standards (NAAQS). The reason Mr. Johnson is uniquely qualified is that he has developed the ventilation pattern data bases that support the NAAQS and is familiar with various code development that will likely be specified as the operating platform for the software. In addition combination of his expertise in the application of human exposure models to risk assessment particularly the development of ventilation activity patterns for different events that can be stratified by age, gender, demographics, etc., his expertise with exposure measurements and models, and additional expertise regarding translation of diary data to ventilation rates, make Mr. Johnson uniquely qualified. THIS IS NOT A REQUEST FOR QUOTATIONS. Only sources capable of fully meeting the unique technical experience cited above will be considered.Technical Documentation must be submitted within 15 days of the publication of this notice to the office identified above. The subject Facsimile number is (513) 487-2109. Posted 04/01/99 (W-SN315428). (0091)

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