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Michigan seeks comment on permit to increase Marathon refinery throughput

A Michigan regulator stated today it is seeking public discuss a proposed license that would allow Marathon Petroleum to improve crude throughput at its Detroit refinery.

Marathon submitted an application with the state in March to run its 140,000 barrel each day refinery continually at full capacity by getting rid of monthly and yearly throughput limits. The strategy is opposed by local environmental groups because increasing throughput increases refinery contamination.

The refinery's existing authorization caps the facility's capability at 140,000 barrels daily (bpd) on a yearly average.

Marathon currently relies on periods of shutdown or minimized production to meet the yearly typical limitation, a representative for the Michigan Department of Environment, Great Lakes, and Energy said.

Marathon declined to comment on whether it plans to boost throughput beyond 140,000 bpd.

The Detroit refinery produces less pollutants than its existing license allows, according to Marathon and regulators.

The facility lies in Wayne County, Michigan, a location with substantial market existence that is out of compliance with national requirements for sulfur dioxide emissions.

To balance out contamination increases, Marathon has proposed a number of projects consisting of upgrading procedure heaters to phase out the unrefined flare.

Marathon has violated air quality guidelines and regulations in the past, however that can not avoid Marathon from seeking this license, regulators said.

The company lost an appeal in 2022 to be exempt from a guideline requiring it to enclose petroleum coke at the Detroit refinery in order to avoid dust from being released.

A public hearing on the proposed authorization is scheduled for May 22.

(source: Reuters)