2005 Annual Report 4d.Progress report. This report serves to document research conducted under a Specific Cooperative Agreement between the ARS-Environmental Quality Laboratory and the Tropical Research and Education Center, University of Florida, Homestead, FL. Additional details of research can be found in the report for the parent project 1265-12220-003-00D entitled, "ATMOSPHERIC PROCESSES OF AGRICULTURAL POLLUTANTS THAT AFFECT AIR AND WATER QUALITY." This project provided technical support for collection and preparation of samples and for installation and maintenance of sampling equipment. Changes in local cultivation practices were noted. Additional canal sampling sites were added to include the Everglades National Park.