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

66 -- LOWER BOUNDARY LAYER WIND/TEMPERATURE SENSING PROFILER SOL ORD #26 DUE 031699 POC Hans Schellhas (513) 487-2055 WEB: na, na. E-MAIL: U.S. EPA Contracts Management Division -- Cincinnati, schellhas.hans@epamail.epa.gov. The U.S. EPA requires a system of instrumentation that can be used to continuously monitor the lower atmospheric boundary layer wind/temperature profile. The purpose of the system is to provide measurements of the thermal and wind boundary layer from the surface up to at least 200 meters. These measurements are to be used to provide boundary layer conditions to initialize a numerical simulation of human exposures to local pollution. The system shall include measurement of surface net radiation, vertical profiles of air temperature, and vertical profiles of wind speed, direction and turbulence. The system shall be easily transportable, set up, and operational at remote sites near roadways, within residential, urban building environments, and industrial areas. The operational aspects and potential limitations of operation within these type of areas should be addressed. All hardware and supporting software shall be integrated and delivered as a single system. The system shall integrate all measurements and data analyses into a central common data processing, logging, and analyses system at the field base station. In addition this central site shall be linked through telemetry to a home base system for data monitoring. In addition the measurements collected on the portable tripods shall be able to operate independent of the central system when they will be operated in a portable mode away from the central site in order to characterize the surface area surrounding the central site. All responsible sources may submit a quotation which shall be considered by U.S. EPA. All requests for the RFQ must be in writing. No telephone requests will be accepted. Facsimile is acceptable. The facsimile number is (513) 487-2109. Posted 03/01/99 (W-SN303473). (0060)

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