(a) For designating, measuring, or estimating services, the landowner or his or her agent, upon presentation of a statement, shall pay to the State Forester, within thirty (30) days of receipt of the statement, an amount not to exceed five percent (5%) of the sale price or fair market value of the stumpage so designated and measured or estimated.
(b) However, for the purpose of further encouraging the use of approved scientific forestry principles on the private forest lands of this state and to permit explanation of the application of principles, the State Forester, where he or she deems it advisable, may designate and measure or estimate without charge the trees of a forest landowner on an area not in excess of eighty (80) acres.