Erratum to "Impact of uncertainty in soil, climatic, and chemical information in a pesticide leaching assessment"

Keith Loague; Richard E Green; Thomas W Giambelluca; Tony C Liang; Russell S Yost

doi:10.1016/j.jconhyd.2016.04.003

Erratum to "Impact of uncertainty in soil, climatic, and chemical information in a pesticide leaching assessment"

J Contam Hydrol. 2016 Nov:194:59-72. doi: 10.1016/j.jconhyd.2016.04.003. Epub 2016 Aug 8.

Authors

Keith Loague¹, Richard E Green², Thomas W Giambelluca³, Tony C Liang², Russell S Yost²

Affiliations

¹ Department of Soil Science, University of California, Berkeley, CA 94720, USA.
² Department of Agronomy and Soil Science, University of Hawaii, Honolulu, HI 96822, USA.
³ Department of Geography, University of Hawaii, Honolulu, HI 96822, USA.

PMID: 27515363
DOI: 10.1016/j.jconhyd.2016.04.003

Abstract

A simple mobility index, when combined with a geographic information system, can be used to generate rating maps which indicate qualitatively the potential for various organic chemicals to leach to groundwater. In this paper we investigate the magnitude of uncertainty associated with pesticide mobility estimates as a result of data uncertainties. Our example is for the Pearl Harbor Basin, Oahu, Hawaii. The two pesticides included in our analysis are atrazine (2-chloro-4-ethylamino-6-isopropylamino-s-triazine) and diuron [3-(3,4-dichlorophenyl)-1,1-dimethylarea]. The mobility index used here is known as the Attenuation Factor (AF); it requires soil, hydrogeologic, climatic, and chemical information as input data. We employ first-order uncertainty analysis to characterize the uncertainty in estimates of AF resulting from uncertainties in the various input data. Soils in the Pearl Harbor Basin are delineated at the order taxonomic category for this study. Our results show that there can be a significant amount of uncertainty in estimates of pesticide mobility for the Pearl Harbor Basin. This information needs to be considered if future decisions concerning chemical regulation are to be based on estimates of pesticide mobility determined from simple indices.