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## A5.3.6.2 Methodology - Wind Erosion 

The second major source of PM emissions from sand and salt piles is wind erosion of the piles. A detailed methodology for calculating wind erosion emissions is given in Chapter 13.2.5, Industrial Wind Erosion 37 , of EPA’s AP -42. The methodology calculates the PM emissions generated by wind erosion of open storage piles by applying an “erosion potential function” to each surface of the pile. Because the methodology is too complex to be reduced into a single equation, this section mainly focuses on the critical data inputs needed to compute these emissions. 

The data inputs required to estimate PM emissions from wind erosion of storage piles are summarized in Table A5-11 ( Data Inputs for Wind Erosion ). 

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