"FRESNO, Calif. - A hazardous-waste landfill suspected by Kettleman City residents of causing birth defects has been inaccurately testing treated contaminants for five years, the U.S. Environmental Protection Agency says.

Officials at the Waste Management site in Kettleman Hills said they immediately began using an independent testing laboratory last week when the EPA notified them of the problem with their own laboratory. But company officials disagree that their laboratory was producing flawed results."

Mark Grossi reports for McClatchy Newspapers June 1, 2010. [2]