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

THE US EPA INTENDS TO NEGOTIATE ON A SOLE SOURCE BASIS, UNDER THE AUTHORITY OF FAR 6.302-2, WITH CONSTELLA GROUP. THE CONTRACTOR SHALL PROVIDE TECHNICAL SUPPORT BY SEARCHING PUBLIC DATABASES TO COMPILE TOXICITY DATA IN THE FORM OF BENCHMARKS AND RELATED CRITICAL EFFECTS FOR APPROXIMATELY 100 CHEMICALS AND UTILIZE THE DATA FROM THE 100 CHEMICALS IN CONJUNCTION WITH CHEMICALS PROVIDED BY EPA AT CONTRACT INITIATION FOR QUANTITATIVE STRUCTURE-TOXICITY RELATIONSHIPS (QSTR) MODELING. THE CONTRACTS WILL BE EXTENDED UNTIL AUGUST 30, 2007. SOURCES WISHING TO BE CONSIDERED MUST SUBMIT DOCUMENTATION TO THE OFFICE IDENTIFIED ABOVE. DOCUMENTATION MUST BE SUBMITTED WITHIN 15 CALENDAR DAYS OF THE DATE OF PUBLICATION OF THIS NOTICE. SUBMIT YOUR REQUEST IN WRITING TO RENITA TYUS AT THE ADDRESS ABOVE OR BY FAX 513-487-2109. TELEPHONE REQUESTS WILL NOT BE HONORED.