Political pressure reported at EPA Survey of scientists says more than half experienced interference in last 5 years

###Live Caption: Energy Secretary Samuel Bodman, right, looks on as Environmental Protection Agency (EPA) Administrator Stephen Johnson answers a question during a news conference at the Energy Department in Washington on February 2, 2007. (AP Photo/Lauren Victoria Burke ###Caption History: Energy Secretary Samuel Bodman, right, looks on as Environmental Protection Agency (EPA) Administrator Stephen Johnson answers a question during a news conference at the Energy Department in Washington on February 2, 2007. (AP Photo/Lauren Victoria Burke) Ran on: 02-07-2007 Ran on: 02-07-2007 Ran on: 04-11-2007 Stephen Johnson, EPA chief, says California can't regulate emissions until his agency acts. Ran on: 07-27-2007 Sen. Barbara Boxer told EPA Administrator Stephen Johnson: &quo;You're part of this because you will not speak out against it.&quo; Ran on: 07-27-2007 Sen. Barbara Boxer told EPA Administrator Stephen Johnson: &quo;You're part of this because you will not speak out against it.&quo; Ran on: 07-27-2007 Sen. Barbara Boxer told EPA Administrator Stephen Johnson: &quo;You're part of this because you will not speak out against it.&quo; Ran on: 07-27-2007 Sen. Barbara Boxer told EPA Administrator Stephen Johnson: &quo;You're part of this because you will not speak out against it.&quo; Ran on: 01-24-2008 EPA chief Stephen Johnson rejected California's proposed emissions rules. Ran on: 01-24-2008 EPA chief Stephen Johnson rejected California's proposed emissions rules. ###Notes: ###Special Instructions: less ###Live Caption:Energy Secretary Samuel Bodman, right, looks on as Environmental Protection Agency (EPA) Administrator Stephen Johnson answers a question during a news conference at the Energy Department in ... more Photo: LAUREN VICTORIA BURKE Photo: LAUREN VICTORIA BURKE Image 1 of / 1 Caption Close Political pressure reported at EPA 1 / 1 Back to Gallery

More than half of the scientists at the Environmental Protection Agency who responded to a survey said they have experienced political interference in their work.

The survey results show "an agency under siege from political pressures," said the Union of Concerned Scientists' report, which was publicly released Wednesday and sent to EPA administrator Stephen Johnson.

The online questionnaire was sent to 5,419 EPA scientists in summer 2007; 1,586 replied, and of those, 889 reported that they had experienced at least one type of interference within the past five years.

Such allegations are not new: During much of the Bush administration, there have been reports of the White House watering down documents regarding climate change, industry language inserted into EPA power-plant regulations, and scientific advisory panels' conclusions about toxic chemicals going unheeded.

But Francesca Grifo, director of the scientific integrity program for the Washington-based nonprofit group, said the survey documents the widespread nature of the problem at EPA.

"What we've been up against until now is anecdotal evidence," Grifo said.

She acknowledged that scientists who are frustrated and upset might have been more likely than those who are satisfied to respond to her organization's survey, but also said: "Nearly 900 EPA scientists reported political interference in their scientific work. That's 900 too many."

EPA spokesman Jonathan Shradar noted that administrator Johnson was previously a 27-year career scientist himself.

"We have the best and finest scientific community in the world at EPA," Shradar said. "All of the issues we deal with are issues that we all are very passionate about. It's important that we let the scientists do the science and allow policymakers to do the policy work."

The survey respondents were split over the effect of political interference on regulations. According to the report, 48 percent believed that EPA's actions are "frequently or always" consistent with scientific findings, while 47 percent believed that agency policy "occasionally, seldom or never" made use of its scientific judgments.

In optional essays, scientists repeatedly singled out the Office of Management and Budget at the White House, accusing officials there of inserting themselves into decision-making at early stages in a way that shaped the outcome of their inquiries.

They also alleged that OMB delayed rules not to its liking. EPA actions "are held hostage" until changes are made, wrote one scientist from the agency's Office of Air and Radiation.

Some also accused members of Congress of inappropriate interventions.

All of the respondents remained anonymous.

J. William Hirzy, an EPA senior scientist and union official, said politics trumped science at times during the Clinton administration as well, but "what we're seeing now is ... the favoring of energy interests, coal-fired power plants. That's something different in this administration."

On Wednesday, Rep. Henry Waxman, D-Los Angeles, wrote to Johnson to ask him to be prepared to respond to the findings at a hearing in May of the House Committee on Oversight and Government Reform.