reply to post by OuttaTime
Originally posted by OuttaTime
Good find. I too, am wondering if there was a typo in the paper. If he meant gallons instead of barrels, it would be a huge mistake (an extra 41
gallons per unit). [..]
I think you're right about it being a typo.. BP would've used approximately 500,000 gallons of dispersant each day (!) to get to a million barrels
in 85 days, which is way more than Nalco can handle (reportedly). Even if they were to call in the help of other manufacturers and use each version of
Corexit known, it would be an extraordinary amount of dispersant.
"[..] So we are happy to have that conversation with BP about checking again on stockpiles of dispersants and what’s available in sufficient
quantities to really be used given that as you heard, at the surface already we’re talking over 400,000 gallons used already and in the subsurface.
[..] We had heard roughly 50/50 but we can’t confirm that so we’re a little uncomfortable with giving you -- this is Lisa Jackson, sorry -- giving
you numbers. The data we had as of May 10, is that there another 805,000 gallons ordered and there were already 500,000 gallons staged."
- EPA, "Full Transcript of May 12, 2010 press conference call", www.epa.gov...
"a. Surface Application. BP shall eliminate the surface application of dispersants. [..]
b. Subsurface Application. BP shall be limited to a maximum subsurface application of dispersant of not more than 15,000 gallons in a single calendar
- EPA, "Dispersant Monitoring and Assessment Directive - Addendum 3", May 26th 2010, www.epa.gov...
"Approximately 1.61 million gallons of total dispersant have been applied—1.03 million on the surface and 577,000 sub-sea. More than 504,000
gallons are available."
- Deepwater Horizon Unified Command, "The Ongoing Administration-Wide Response to the Deepwater BP Oil Spill", June 30th 2010,
"The company has used at least 1.8 million gallons of dispersants on the Gulf's surface and 5,000 feet deep at the source of the leak."
- AP, "Suit filed seeking more details on dispersants", July 15th 2010,
The transcript of the May 12th conference call tells us that 400,000 gallons of dispersant were used on May 10th, amounting to 20,000 gallons a day
since April 20th. If we extrapolate this figure to today, we would end up with about 1,720,000 gallons - which fits perfectly with AP's report.
It seems more likely to me that the writer of the article accidentally used the word "barrels" instead of "gallons" than that all sources quoted
above are wrong and BP actually used between 500 and 1000 times as much dispersant as reported. That's not a factor easily overlooked.
Since EPA has restricted BP's use of dispersants to a maximum of 15,000 gallons a day (without further authorization), the amount of dispersant used
will not be proportional to the amount of oil, even if they exceed the allowed amount by a 'few' thousand gallons a day. I doubt we can calculate
the amount of oil released in an acceptable range of confidence..
* I realise that EPA's directive are not much of an indication of BP's actions. Added for the total picture.
[edit on 14-7-2010 by scraze]