"One of the world's largest oilfield services companies continued to tell U.S. EPA it was complying with an agreement barring the injection of diesel fuel near drinking-water aquifers, documents show, after admitting to Congress that it had violated the pact.

BJ Services Co. acknowledged in January 2008 to investigators from the House Oversight and Government Reform Committee that it had violated a 2003 agreement not to use diesel in specific types of hydraulic fracturing. When that was disclosed last month, a BJ Services executive said that the company had "self reported" the violation to EPA.

But EPA says the company never told agency officials. And documents show the company has twice since then told the environmental agency that it has always been in compliance with the agreement."

Mike Soraghan reports for Greenwire March 23, 2010. [2]