| Abstract |
In October 1985, the Illinois Environmental Protection Agency (IEPA) expanded pesticide monitoring in surface waters to include herbicides and organophosphate insecticides commonly used in agricultural practices. Pesticides selected include seven herbicides (alachlor, atrazine, butylate, cyanazine, metolachlor, metribuzin, trifluralin), seven organophosphate insecticides (chloropyrifos, diazinon, fonofos, malathion, methyl parathion, phorate, terbufos) and one fungicide (captan). Monitoring efforts included the establishment of the Pesticide Monitoring Subnetwork within IEPA's existing Ambient Water Quality Monitoring Network (AWQMN) as well as intensive monitoring related to storm event runoff. The pesticide subnetwork consists of 30 stations within the 208 station AWQMN, and are located in predominately agricultural watersheds in Illinois. Intensive monitoring related to storm event runoff was conducted at two stations; Macoupin Creek in Macoupin County and Spring Creek in Sangamon County. The report summarizes surface water results from both monitoring efforts and provides future considerations regarding IEPA's pesticide monitoring programs. |
