R -- Extension of Development of Statistically Based QSTR Models for Predicting Acute and Sub-Acute Toxicity Benchmarks for a Variety of Chemicals

The Environmental Protection Agency (EPA) plans to negotiate a sole source contract with Constella Group under FAR 6.302-2 authority to provide technical support in compiling toxicity data for approximately 100 chemicals. This involves searching public databases to gather benchmarks and critical effects data, which will be used alongside additional chemicals provided by the EPA for quantitative structure-toxicity relationships (QSTR) modeling. The contract, aimed at developing statistically based QSTR models to predict acute and sub-acute toxicity benchmarks, is an extension set to continue until August 30, 2007. Interested parties wishing to be considered must submit documentation within 15 calendar days from the notice publication date, addressed to the contracting officer Renita Tyus either in writing or via fax, with telephone inquiries not accepted. The solicitation is managed by the Cincinnati Acquisition Division, with the primary point of contact being Renita A. Tyus. The contract falls under NAICS code 541990, relating to scientific research and development services.