The Environmental Protection Agency (EPA) is delaying the roll out of a controversial science proposal after receiving nearly 600,000 comments on the plan, The Hill reported Wednesday.

The proposal would have limited the kinds of studies the EPA could use to make regulations to only studies that relied on data that was publicly available and therefore reproducible. But scientists and environmentalists warned that would exclude many important public health studies that relied on confidential patient medical records, ABC News reported.

The postponement was announced with the release of President Donald Trump's regulatory agenda on Wednesday, which filed the proposal with its "long term actions" agenda. The EPA will finalize the rule around January 2020, and many other rules are ahead of it in line, The Hill reported.

"This is not a delay. The agency is continuing its internal rulemaking development process for this action," EPA spokesman Michael Abboud said, according to The Hill.

The science proposal was a darling of ousted EPA administrator Scott Pruitt, who has since been replaced by former coal lobbyist Andrew Wheeler.

But Yogin Kothari of the Union of Concerned Scientists told the Associated Press Wednesday that the rule's delayed rollout did not mean that Wheeler was departing from Pruitt's vision.

"The current political leadership still wants to move forward with Pruitt's agenda to sideline science, just at a slower pace," Kothari said. "It's clear the agency's political leadership still wants to ignore the best available science when it comes to protecting public health and the environment."

The rest of the scheduled agenda, as reported by The Hill, supports Kothari's point. Other EPA regulations to be repealed before the science proposal is finalized include:

The Clean Power Plan: The final rule on repealing former President Barack Obama's attempt to reduce carbon dioxide emissions from power plants is scheduled for March of 2019. The Clean Water Rule: The final repeal of another Obama era regulation to extend water protections to ponds and streams is also due in March. Fuel Efficiency Standards: The plan to freeze fuel efficiency standards in 2020 will also be finalized in March. Methane Pollution Rules: The EPA hopes to finalize its repeal of regulations limiting methane pollution from oil and natural gas drilling.

The administration-wide agenda also includes proposals on the docket from the Department of the Interior that are relevant to the environment: