A major US renewable fuels trade group has asked for an update on the Environmental Protection Agency’s (EPA) investigation into foreign feedstock imports and urged the agency to adopt more stringent feedstock verification requirements for used cooking oil (UCO) and tallow.

The US Renewable Fuels Association’s (RFA) letter to EPA Administrator Michael Regan, dated Tuesday September 17, follows confirmation in August that the agency was conducting audits of the supply chains of at least two US producers relating to imported feedstocks, including UCO and tallow, used to produce renewable fuel and generate credits under the Renewable Fuel Standard (RFS).

The agency’s inquiry pertains to whether imported virgin palm oil is being mislabeled as UCO to obtain US federal tax subsidies due to UCO’s lower carbon intensity score.

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