Trace Atmospheric Gas Analyzer (TAGA) Dispersant Data for BP Spil/Deepwater Horizon - August 2010

The Trace Atmospheric Gas Analyzer (TAGA) buses are self-contained mobile laboratories that conduct instant-result monitoring of air quality at particular locations. From May 18-June 6, 2010, EPA’s TAGA buses monitored for the two chemicals found in the COREXIT dispersants that have the highest potential to get into the air in any significant amounts: EGBE (2-butoxyethanol) and dipropylene glycol monobutyl ether. In addition to being found in the COREXIT dispersants, these compounds are found in cleaning products and coatings. As a result, we have not beeen able to identify the source of the measured compounds. The TAGA buses detected very low levels of these chemicals in the air, at a limited number of the locations sampled along the Gulf Coast. The levels found were well below those that are likely to cause health effects, and suggest that the use of dispersants on the oil spill would not have a significant impact on air quality on land.

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