(a) Not to exceed $0.45 for each ton of fertilizer, agricultural amendment or agricultural mineral product distributed, of which not more than $0.25 may be expended for funding grants as provided in subsection (3) of this section.

(b) Not to exceed $0.05 for each ton of gypsum or of an agricultural mineral with a principal ingredient of calcium sulfate (CaSO4• 2H2O or CaSO4) distributed.

(c) Not to exceed $0.05 for each ton of lime product distributed, of which not more than $0.025 may be expended for funding grants as provided in subsection (3) of this section.

(2) If the total amount that would be due from a person under subsection (1) of this section for inspection fees is less than $15, the person shall pay $15.

(3) After being advised by the Fertilizer Research Committee created in ORS 633.479, the department may use amounts made available under subsection (1)(a) and (c) of this section to fund grants for research and development related to the interaction of fertilizer, agricultural amendment, agricultural mineral or lime products and ground water or surface water.

(4) The department may not assess inspection fees on any fertilizer, agricultural amendment, agricultural mineral or lime product in commercial transit that is not intended for use or final distribution in this state.

(5) If there are duplicate inspection fee payments, an application made for a refund must be on forms provided by the department and submitted to the department within 180 days of the alleged overpayment. [2015 c.514 §3]