U.S. Environmental Protection Agency, Contracts Management Division, Cincinnati, OH 45268-7001

D -- DEVELOPMENT OF GIS-BASED VEGETATION SUCCESSION MODEL SOFTWARE FOR PRARIE POTHOLE WETLANDS TO INCORPORATE EFFECTS OF WATER LEVEL CHANGES, SEDIMENTATION, AND TURBIDITY SOL 95-40 POC Contracting Officer, Sandra V. Savage, (513)366-2046 The U.S. EPA intends to negotiate with Cornell University on a sole source basis to modify an existing wetland vegetation succession model. EPA believes that Cornell University is the only firm capable of satisfying the modification/development requirements. The model software shall meet the following requirements: (1) predict changes in prarie pothole wetland vegetation as a function of wetland topography, water level, sedimentation rate, and turbidity; (2) predict shifts between dominant vegetation types in seasonally-flooded prarie pothole wetlands as well as in semi-permanent wetlands to the extent possible based on hydrologic regime and previous cover state; (3) model impacts of sedimentation and turbidity on wetland vegetation as a function of seed size, vegetation life history traits (dispersal- vs. seed-bank dependent species), and light compensation points; (4) provide spatially-distributed output suitable for GIS display and in a format that it can be imported into ARCVIEW software (ESRI); (5) provide mapped vegetation output at a monthly time step over the course of the growing season at a minimum; (6) be delivered within one year of issuance of purchase order. NO REQUEST FOR QUOTATIONS IS AVAILABLE. Interested firms must respond within 15 calendar days of the date of this announcement. Interested firms shall include information which establishes that they can meet the above requirements. Responses to this synopsis must be in writing. No telephonic inquiries will be accepted. (0191)

Loren Data Corp. http://www.ld.com (SYN# 0023 19950711\D-0004.SOL)