I still haven't seen anything about this in The Paper of Record but it made the front page of Newsday:

"City officials and residents of lower Manhattan Saturday called for a congressional investigation into the White House's role in the Environmental Protection Agency's alleged air quality cover-up after Sept. 11, and demanded a proper cleanup of the area.

Words like "outrage" and "disgrace" pierced the air like the toxic chemicals they were meant to describe, as Rep. Jerrold Nadler (D-Manhattan), Councilman David Yasskey (D-Brooklyn) and others gathered to discuss an EPA report, issued late Friday, that contained the allegations.

The report, published by the agency's Inspector General, concludes the White House influenced the EPA to downplay concerns about air contaminants in the days immediately following the World Trade Center disaster."