Before January 1, 1994, the commission will consult with the state toxicologist to determine whether the federal government has established a legally enforceable system that is substantially equivalent to the requirements of this chapter that govern the imprinting of solid dosage form over-the-counter medication. To be substantially equivalent, the effective dates for implementation of the federal system for imprinting solid dosage form over-the-counter medication must be the same or earlier than the dates of implementation set out in the state system for imprinting solid dosage form over-the-counter medication. If the commission determines that the federal system for imprinting solid dosage form over-the-counter medication is substantially equivalent to the state system for imprinting solid dosage form over-the-counter medication, this chapter will cease to exist on January 1, 1994. If the commission determines that the federal system is substantially equivalent, except that the federal dates for implementation are later than the Washington state dates, this chapter will cease to exist when the federal system is implemented.