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Mar Pollut Bull

Title:		Deepwater Horizon 2010: Subsea dispersants protected responders from VOC exposure
Author(s):		Zhao L; Mitchell DA; Prince RC; Walker AH; Arey JS; Nedwed TJ;
Address:		"ExxonMobil Upstream Research Company, Spring, TX 77389, United States of America. Independent Consultant, Tomball, TX 77375, United States of America. Stonybrook Apiary, Pittstown, NJ 08867, United States of America. Independent Consultant, Cape Charles, VA 23310, United States of America. Oleolytics LLC, Lebanon, NJ 08833, United States of America. ExxonMobil Upstream Research Company, Spring, TX 77389, United States of America. Electronic address: Tim.J.Nedwed@Exxonmobil.com"
Journal Title:		Mar Pollut Bull
Year:		2021
Volume:		20211025
Issue:		Pt B
Page Number:		113034 -
DOI:		10.1016/j.marpolbul.2021.113034
ISSN/ISBN:		1879-3363 (Electronic) 0025-326X (Linking)
Abstract:		"Controversy remains on the use of Sub-Sea Dispersant Injection (SSDI) during the Deepwater Horizon (DWH) spill to minimize the exposure of responders on surface vessels to volatile organic compounds (VOC). Here, we use extensive evidence (>90,000 VOC measurements) collected near the oil well MC252 site during the DWH spill and demonstrate at a high level of statistical confidence that SSDI enhanced the safety and health conditions of the responders at the water surface through the reduction of airborne VOC concentrations in a dose-dependent manner. VOC levels on ships' decks were clearly diminished (p < 0.001) during subsea dispersant use, and incidents of peak concentrations (>50 ppm VOC) that could have been an immediate concern to worker health were reduced by a factor of ~6 to 19 when dispersants were delivered at the intended rate. SSDI thus played an important role in minimizing potential exposure to VOC, and should be embedded in guidelines and regulations for dispersant use"
Keywords:		"Oil and Gas Fields *Petroleum Pollution/analysis *Volatile Organic Compounds Water *Water Pollutants, Chemical/analysis Oil spill Sub-sea dispersant injection VOC exposure Worker health;"
Notes:		"MedlineZhao, Lin Mitchell, Douglas A Prince, Roger C Walker, Ann Hayward Arey, J Samuel Nedwed, Tim J eng England 2021/10/29 Mar Pollut Bull. 2021 Dec; 173(Pt B):113034. doi: 10.1016/j.marpolbul.2021.113034. Epub 2021 Oct 25"