A free collection event for agricultural wastes, pesticides and empty containers will be held from 8 a.m.–noon Saturday, Oct. 22 at Clean Harbors Environmental Services, 12402 S.E. Jennifer St., Clackamas, Ore. An event flier can be downloaded here. The event is being sponsored by Clackamas River Water Providers, Clackamas River Basin Council, the Clackamas Soil and Water Conservation District, and the Marion Soil and Water Conservation District. Participants must register in advance by filling out an application form that is available at www.conservationdistrict.org, or call Clean Harbors at 503-785-0404.