BP's permit to drill Macondo well was submitted to MMS on 10 March 2009
These videos talking about "something wicked (a depopulation event)" about to happen. Mexico was mentioned many times with reference to the Aztec human sacrifice. They were speculating on a volcanic eruption of some sort. Coincidentally the radio interviews were 20 and 28 of April 2009. So words must have leaked out but details were fuzzy; leaving room for a lot of speculation. Look for the keywords like mass destruction, vaccine, population reduction, mexico etc.
The Macondo well was destined to blow up in Nov 2009 but Hurricane Ida spoiled the plan. The April 2010 blowout event was a backup plan, a retry.