10.2190/6DMR-2QUE-7QL0-FX77 6DMR2QUE7QL0FX77 4 Predicting Household Hazardous Waste Generation Rates 237 256 20020509 20020509 20020509 20020509 6DMR2QUE7QL0FX77.pdf http://baywood.metapress.com/link.asp?target=contribution&id=6DMR2QUE7QL0FX77 3 Chris Zeiss University of Alberta, Edmonton, Canada Discarded household hazardous products may contribute significant quantities of contaminants to landfills in rural communities. During 1991, a research study was undertaken in a rural resource based community to determine the weight fraction of hazardous waste in the household refuse stream and to develop and test models to predict the discard rates from households. The data collection program consisted of physical sampling of waste loads during four one week periods at the landfill, an inventory survey of households, and a sales survey of paint and detergent sales in the community. Three simple models based on stored volumes, sales volumes and combined sales and stored volumes were developed. Data were aggregated and used to predict the total discarded quantity of paint and detergent in 1991. The results were compared with the physical sampling results. An average of 3.2 percent of the household refuse are hazardous materials¹ equivalent to about 90 tonnes per year in this community of 5,400 residents. These results show that rural refuse contains more hazardous materials than urban refuse, probably because of vehicle and house maintenance activities. While the storage based model overestimates discard rates, sales and combined models approximate, respectively, within 20 percent and 5 percent the measured residential discard rates in the study community. As a result, rural municipalities need to take action to reduce the quantities entering landfills and consider collection depots and waste minimization as alternatives to the once yearly toxic collection days. M. Hamden, Personal communication, Owner, Blocks Foods, Drayton Valley, Alberta, November 1991. M. Schiffer, <i>Behavioral Archeology</i>, Academic Press, New York, 1976. Drayton Valley Chamber of Commerce, Consumer Survey of Local Purchasing Preferences and Expenditure Patterns, Alberta Chamber of Commerce, Drayton Valley, 1987. D. Wilson and W. Rathje, Structure and Dynamics of Household Hazardous Wastes, in <i>Journal of Resource Management and Technology, 17</i>:4, pp. 200-206, 1989. G. Savage and H. Sharpe, Assessment of Non-Regulated Hazardous Wastes in the Seattle Area, in <i>Waste Management and Research, 2</i>, pp. 159-171, 1987. E. Jones and J. Atwater, Survey of Household Hazardous Waste Generation and Collection Preferences in the City of Vancouver, <i>Canadian Journal of Civil Engineering, 18</i>, pp. 525-534, 1991. C. Zeiss and J. Atwater, Noxious Facilities and Community Response: Tracing Pathways from Facility Impacts to Community Attitude, <i>Canadian Journal of Civil Engineering, 18</i>:1, pp. 83-96, February 1991. D. Galaran, Personal communication, Owner, Prism Paints, Drayton Valley, Alberta, February 1992.