As Chairman of the Energy and Environment Subcommittee, Rep. Markey pushed BP to disclose all that it knew about the true flow rate of oil spilling into the Gulf of Mexico and conducted aggressive oversight intothe use of unprecedented volumes of chemical dispersants that were used to combat the effects of the oil spill.

In addition, Rep. Markey urged the Department of the Interior for information regarding the Blowout Preventer investigation. 

A copy of the letter sent to the Department of the Interior on December, 21, 2010, can be found HERE with additional attachments: 1 attachment , 2 attachment.