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Source Evaluation and Mitigation of Off-site Movement of Pesticides from Residential Homes

Different wipe materials and wetting agents have been traditionally used to collect pesticide residues from indoor surfaces in human exposure assessments. Such methods were developed to estimate human pesticide exposure through skin contact. From an environmental point of view, wiping methods may be also applied to predict the runoff potential of pesticides on urban impervious surfaces. Since loose particles contribute the most to the pesticide levels found in the runoff water, a quantitative surface wipe method should be able to recover transferable pesticide residues either sorbed on concrete or attached to particles, with the aim to quantitatively estimate the pesticide runoff potential from concrete surfaces.