The State Board of Agriculture shall promulgate rules which prescribe permit requirements applicable to discharges composed entirely of storm water that shall at a minimum meet federal law. The rules may require permits on a case-by-case basis, exempt categories of discharges, or provide a schedule for obtaining the permit. The Board shall have promulgated rules for storm water discharges which comply with Environmental Protection Agency requirements for approval of the state National Pollutant Discharge Elimination Systems program no later than the date that the Department is to receive authorization to administer a state National Pollutant Discharge Elimination System program.