Limitations.

The maximum amount of the credit that a claimant may claim under this subsection in a taxable year is an amount that is equal to $5,000 for each service station for which the claimant has installed or retrofitted pumps as described under par. (b).

Partnerships, limited liability companies, and tax-option corporations may not claim the credit under this subsection, but the eligibility for, and the amount of, the credit are based on their payment of amounts under par. (b). A partnership, limited liability company, or tax-option corporation shall compute the amount of credit that each of its partners, members, or shareholders may claim and shall provide that information to each of them. Partners, members of limited liability companies, and shareholders of tax-option corporations may claim the credit in proportion to their ownership interests.

The department of safety and professional services shall establish standards to adequately prevent, in the distribution of conventional fuel to an end user, the inadvertent distribution of fuel containing a higher percentage of renewable fuel than the maximum percentage established by the federal environmental protection agency for use in conventionally-fueled engines.