ExxonMobil responded to Mayflower spill slower than federally required | Arkansas Blog

Friday, June 14, 2013

ExxonMobil responded to Mayflower spill slower than federally required

Posted By on Fri, Jun 14, 2013 at 2:39 PM

Rep. Ed Markey image
ExxonMobil claims that it shut down its Pegasus pipeline 16 minutes after it ruptured in Mayflower on March 29. That timeline is still under investigation, but even if ExxonMobil's contention is verified, it would still fall short of what a federally approved Emergency Response Plan required. The difference between how ExxonMobil responded and what was required could've meant as many as 10,000 more barrels (some 420,000 gallons) spilled, according to InsideClimate News.

This development was revealed today by Rep. Ed Markey (D-Mass.), who posted correspondence between his office, ExxonMobil and the Pipeline and Hazardous Materials Safety Administration (PHMSA) on his website.

According to the documents, PHMSA approved an Emergency Response Plan that included a "Worst Case Discharge" scenario that requires ExxonMobil to detect and shut down the pipeline in 12 minutes in 2009. On March 14, ExxonMobil submitted a revised plan to PHMSA that would extend the detection and shutdown time to a total of 18 minutes. In correspondence with Markey, ExxonMobil maintained that this revised plan was in effect on March 29, but when asked by Markey to verify that, PHMSA said the revised plan has yet to be approved.

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