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Quantification of Almond Sweeping Emission Reductions Through Changes In a Sweeper Operation

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan

Citation:  2007 ASAE Annual Meeting  074104.(doi:10.13031/2013.23262)
Authors:   L Barry Goodrich, Sergio Capareda, Jacob Powell, Charles Krauter, Matt Beene
Keywords:   PM10, TSP, almond harvest, inverse dispersion modeling, mitigation measures

Almond harvest accounts for a significant amount of PM10 emissions in California each harvest season. This paper addresses the reduction of blower passes during the harvest from 3 to 1 as a possible mitigation measure. Ambient total suspended particulate and PM10 sampling was conducted at two orchards during harvest with alternating control and experimental treatments. On--site meteorological data was used in conjunction with inverse dispersion modeling using Industrial Source Complex--Short Term version 3 to develop emission rates from the measured concentrations. A reduction of 50% in emissions was achieved by the experimental treatment representing a significant potential for emission reductions across the entire state. The harvest efficiency was also measured to determine the possible financial impacts from a crop removal aspect. The results of reducing the blower passes are that approximately 4.5 kg/ha of almond meats will be left in the field with the reduced practices.

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