Rep. Brian Fitzpatrick Brian K. FitzpatrickFlorida Democrat introduces bill to recognize Puerto Rico statehood referendum DCCC reserves new ad buys in competitive districts, adds new members to 'Red to Blue' program 2020 Global Tiger Day comes with good news, but Congress still has work to do MORE (R-Pa.) is calling on Environmental Protection Agency (EPA) chief Scott Pruitt Edward (Scott) Scott PruittJuan Williams: Swamp creature at the White House Science protections must be enforceable Conspicuous by their absence from the Republican Convention MORE to step down, joining a small handful of GOP lawmakers to do so in recent months.

“Yes, I do,” Fitzpatrick said at a news conference Monday in Horsham, Pa., when asked if he thinks Pruitt needs to resign.

“My standard for calling for resignations is an [inspector general (IG)] report, an IG study, finding some facts, conclusions of law. And there’s way too much stuff now,” he continued, according to video recorded by activist environmental group Friends of the Earth.

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Fitzpatrick said he made his call due to Pruitt’s spending and ethics scandals.

But he also said “Exhibit A” in the case against Pruitt is a study that the EPA allegedly tried to block from public release.

The study looked into the health effects of per- and polyfluoroalkyl substances (PFAS), a class of man-made chemicals that have been found in drinking water sources lately.

In an email made public last month, an unidentified administration official said the PFAS study drafted by a Department of Health and Human Services agency would be a “public relations nightmare” because it would show health harms at a much lower exposure rate than the EPA had previous estimated.

The congressman and Rep. Brendan Boyle (D-Pa.) called their news conference Monday near a military base in suburban Philadelphia where firefighting chemicals containing PFAS have leached into local water supplies.

That draft study was released last week, and the EPA has said it is committed to properly considering whether the substances need new regulations.

EPA spokesman Jahan Wilcox defended the actions of Pruitt and the agency on PFAS.

"This was not an EPA study and thus not our report to release," he said in a statement.

"From our historic national PFAS summit with representatives from over 40 states, first-ever community engagement listening session in New Hampshire today, to our four-step action plan, Administrator Pruitt is taking decisive action to eradicate PFAS from our drinking water."

GOP Reps. Carlos Curbelo Carlos Luis CurbeloGOP wants more vision, policy from Trump at convention Mucarsel-Powell, Giménez to battle for Florida swing district The Memo: GOP cringes at new Trump race controversy MORE (Fla.), Ileana Ros-Lehtinen Ileana Carmen Ros-LehtinenEx-Florida GOP congresswoman under federal investigation: report 'Trump show' convention sparks little interest on K Street Shalala to face Salazar in Florida rematch MORE (Fla.), Elise Stefanik Elise Marie StefanikRepublicans cast Trump as best choice for women The Hill's Morning Report - Presented by Facebook - Pence rips Biden as radical risk GOP women offer personal testimonials on Trump MORE (N.Y.) and Frank LoBiondo Frank Alo LoBiondoVan Drew wins GOP primary in New Jersey Amy Kennedy wins NJ primary to face GOP's Van Drew Stimulus price tag of .2T falls way short, some experts say MORE (N.J.) all previously called for Pruitt to step down or be fired.

Fitzpatrick, a freshman, is facing a tough reelection battle this year in a race that election-watchers like the Cook Political Report have declared a “toss-up.”

— Updated at 9:07 p.m.