Response to Comment on “Reevaluation of Air-Water Exchange Fluxes of PCBs in Green Bay and Southern Lake Michigan”

We thank Goss et al. for their interest in our published research detailing PCB Henry's law constants and their application to modeling net air-water exchange fluxes in Lake Michigan. We agree that determining accurate and precise values of physical constants for environmentally relevant chemicals is both challenging and often neglected. Measurements are difficult, and care must be taken to ensure the validity of the results. Compiling and evaluating data and deriving consensus values are also extremely important activities and require a comparable level of diligence. We address the specific points raised by Goss et al. below and provide more detail in the Supporting Information. In short, we believe that their comments result from an incomplete analysis of the available literature, inexact application of structure-activity relationships to highly hydrophobic chemicals, and a mischaracterization of our experimental design and resulting data. The thorough re-analysis of our previous studies prompted by the Goss et al. critique did not result in any substantial changes to our original conclusions.