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Response to letter on “Unmix Optimum Analysis of PAH Sediment Sources”
Citation:
Norris, G. AND R. Henry. Response to letter on “Unmix Optimum Analysis of PAH Sediment Sources”. SCIENCE OF THE TOTAL ENVIRONMENT. Elsevier BV, AMSTERDAM, Netherlands, 736:139285, (2020). https://doi.org/10.1016/j.scitotenv.2020.139285
Impact/Purpose:
Response to comments from published article, Unmix Optimum analysis of PAH sediment sources.
Description:
We appreciate the opportunity to respond to O’Reilly and Edwards Letter regarding our recent publication in this journal, “Unmix Optimum analysis of PAH sediment sources.” This letter contains many of the same comments as prior letters from O’Reilly on published papers that have identified CT-sealant as an important source of PAHs and the authors of those technical papers have presented their rebuttals (Crane, 2014; Van Metre and Mahler, 2011; Baldwin et al., 2017). The letters focus on chemical source profiles commonly used in PAH environmental forensics literature. Our use of the PAH source profile library from the USGS 40 Lakes and Austin, TX studies (Van Metre and Mahler, 2010; Van Metre and Mahler, 2014) was intentional and allowed for comparison of the USGS Chemical Mass Balance and Unmix Optimum results.
