This regulation extends a temporary exemption from the requirement of a tolerance for residues of the biological Aspergillus flavus AF36, (A. flavus) a non-aflatoxin producing strain of A. flavus, on cotton when applied or used as aerial pre-bloom applications to cotton in specified counties of Arizona. The Interregional Research Project Number 4 (IR-4), New Jersey Agricultural Experiment Station, Technology Center of New Jersey, Rutgers University, 681 U.S. Highway #1 South, North Brunswick, NJ 08902-3390, submitted an amended petition to EPA under the Federal Food, Drug, and Cosmetic Act, as amended by the Food Quality Protection Act of 1996 requesting the temporary exemption. This regulation eliminates the need to establish a maximum permissible level for residues of Aspergillus flavus AF36. The temporary tolerance exemption will expire on December 30, 2003.