EPA declined Friday to provide details of procedural changes under Pruitt that led to the seven sites being delisted faster. "In 2016, President Obama's EPA cleaned up two Superfund sites, but rather than cherry-pick individual years, it would only be fair to judge us upon the completion of our tenure," said Jahan Wilcox, an EPA spokesman. "Under Administrator Pruitt's leadership, we've completed the cleanup of seven toxic land sites and this is just the beginning."