Sens. James Inhofe (R-Okla.) and Mark Pryor (D-Ark.) demanded that the Environmental Protection Agency (EPA) not retroactively require farmers to comply with spill regulations.

Inhofe and Pryor asked EPA administrator Gina McCarthy to clarify the EPA’s interpretation of its authority in enforcing the Spill, Prevention, Containment, and Countermeasure (SPCC) rule on farmers.

“It has come to our attention that the EPA is informing agriculture producers that it does have the authority to begin enforcing the SPCC rule retroactively beginning September 23,” the senators wrote in a letter to McCarthy. “Congress has repeatedly raised concerns about the implementation of this rule within the agriculture sector, making these reports particularly unsettling.”