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Republicans in the Wisconsin Legislature want to eliminate state protections for wetlands and air quality except when mandated by the federal government, saying they are costly for businesses.

About a million acres of wetlands could be left vulnerable and as many as 300 hazardous air pollutants could become unregulated under a pair of proposals circulating among lawmakers.

The proposals come as President Donald Trump’s administration moves to reduce federal environmental protections it says are unduly burdensome.

The Wisconsin Wetlands Association said Monday the risk of flooding and polluted ground water would increase under a Wisconsin legislative proposal to remove state authority to force developers to avoid or minimize damage to important wetlands.

The proposal’s backers point out that it would preserve the current legal requirement that developers who pave over wetlands pay a fee that is used to create or restore wetlands elsewhere.

“Wisconsin is one of just a small handful of states that recognizes a class of wetlands beyond what is defined by the federal government,” state Sen. Roger Roth said through a spokeswoman. “It is with this smaller portion of total wetlands where our bill seeks to strike a balance.”