That tax rate will be 9.5 cents less than August's record-high rate of 62.4 cents.

The crude distillation unit at the BP refinery in Whiting was shut down last month following an electrical fire. It has restarted and the company says operations at the facility are approaching normal levels.

An electrical fire at a BP refinery in northwest Indiana on Wednesday caused the company to temporarily close its facility located about 15 miles southeast of Chicago.

The emergency waiver was granted Saturday for Indiana, Illinois, Michigan and Wisconsin in response to a fire last week at an Indiana oil refinery that could affect prices and supply.

Indiana has two taxes on gasoline -- the 7% state sales tax and a tax directed to infrastructure projects.

Motorists in Indiana are now paying about 56 cents per gallon in state taxes on gasoline — the highest-ever level shown in state records — and it will increase next month based on rising fuel prices.

Indiana reimburses companies that clean up these leaks up to $2.5 million per site - more than any other state in the country. But the state says some companies are taking advantage of the fund and it could be in danger of running out of money.

A Saturday fire caused a malfunction to the unit at BP's Whiting Refinery along Lake Michigan in northwest Indiana.

President Donald Trump mentioned the possible policy shift during a visit to Iowa last week. He said the Administration is working on rolling back restrictions that ban higher ethanol blended gasoline during summer months.

According to American Automobile Association, AAA, Indiana has felt the biggest increase in gas prices - about 66 cents a gallon -- since the beginning of the year.