The Department of Environmental Quality seeks public comment on amendments to Ariz. Admin. Code §18-6-301, Groundwater Protection List (GWPL). The GWPL is a list of agricultural use pesticide active ingredients that have the potential to pollute groundwater. Comments are due August 16, 2009. http://www.azsos.gov/public_services/Register/2009/29/pubinfo.pdf pp. 1196-98.