The Environmental Protection Agency (EPA) has announced plans to begin reviewing how states regulate oil painting, a practice that allows oil painting firms to apply to drill in national parks.

A review of state regulations will be undertaken in coordination with the Department of Interior (DOI), which is tasked with coordinating the federal government’s efforts to protect water, air, wildlife and natural resources.

The move comes amid a wave of criticism over the use of oil painting to fill parks with artwork.

In April, the Environmental Protection Administration (EPA), in a notice of proposed rulemaking, called on states to limit the number of people who can apply for a permit to paint in national forests and wetlands.

The new review will examine whether oil painting is a valid way to achieve conservation goals and whether state regulations are sufficient, according to EPA Administrator Scott Pruitt.

Oil painting has become popular as it allows workers to create works of art that can be used by private collectors to pay homage to conservation issues.

However, it is illegal to sell paintings in the United States, and many conservationists say it’s a cheap way to boost sales.

The oil painting industry has been under scrutiny since President Donald Trump signed an executive order on Monday directing the EPA to take steps to protect the environment.

Trump has also said that he wants to ban oil painting from parks, which has raised questions about how that will be enforced.

A new rule could come as soon as next week, according a person familiar with the matter.

Pruitt said in April that he planned to issue the rule on Monday.

The agency is also expected to review whether states should require companies to pay a fee to protect their land from oil painting.

Oil painting is not required in some areas of the country, according the person familiar.