Authorizing the Mayor and City Council of Baltimore City or the governing body of a county or municipal corporation to grant, by law, a credit against the county or municipal corporation property tax on real property if use of the real property has been converted from a retail service station to other certain uses; prohibiting the application of the credit unless the underground storage tanks located on or formerly located on the real property have been permanently closed; and applying the Act to all taxable years after June 30, 2026.