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The Evergreen Supertanker 747 may fly over the Gulf Coast in coming days, dropping a substance that could break up oil that threatens to damage the coastline.
“These substances typically require light coverage, about 5 gallons per acre,” Baynes said. “With our plane’s capacity, we could lay a line 200 feet wide and 300 miles long.”
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EPA’s TAGA bus is now monitoring the air along the Gulf Coast for two chemicals found in the COREXIT dispersants: 2-BE (2-butoxyethanol), and dipropylene glycol mono butyl ether, which have the highest potential to get into the air in any significant amounts. EPA has been monitoring for these chemicals since May 18, 2010.
According to the National Ambient Volatile Organic Compounds Database
(Shah and Singh, 1988), the average daily home indoor air concentration of 2-butoxyethanol is 0.214 ppb (1.0 µg/m3)
In addition to being found in the COREXIT dispersants, these compounds are found in cleaning products and coatings. As a result, we may not be able to identify the source of the measured compounds. The very low levels we are seeing suggest that the use of dispersants on the oil spill is currently having an insignificant impact on air quality on land.
www.epa.gov...
Originally posted by OurskiesRpoisoned
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Originally posted by nasdack24k
Originally posted by OurskiesRpoisoned
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I find this data to be highly suspect, as this table shows amounts detected that are below the detection limit. It is impossible to detect anything below the detection limit (that's why it's called the detection limit).
This indicates that either the detection limits are far lower than stated in this table, or that the numbers representing the amounts detected are just made up.
Edit: a third possibility is that the "detection limit" row is in a different rate of measurement (ppbv) than the rows representing the amounts detected (rate of measurement isn't labeled in these rows) . This makes these types of charts impossible to read without doing the math to convert these rows into like terms. This makes these types of charts very difficult for the average layperson to interpret..
[edit on 6/14/2010 by nasdack24k]
Originally posted by OurskiesRpoisoned
The TAGA data hasn't been updated since June 6th, the day I posted this thread.
6 days, no air quality data? Yet before I posted this thread, data had been posted daily since May 25th. ???
[edit on 12-6-2010 by OurskiesRpoisoned]