Any person, except a person exempted by this chapter, who practices or offers to practice geology in this state, including a person employed by the state or its political subdivisions, is subject to this chapter. The following are exempt:
(1) Any person engaged solely in teaching the science of geology or engaged solely in nonpublic geologic research in this state; however, a teacher or researcher shall be certified as a licensed professional geologist if the teacher or researcher wishes to perform any geologic work or services for which licensure as a geologist is required by this chapter;
(2) An employee or subordinate of a licensed professional geologist, as long as the employee or subordinate acts solely in that capacity. This exemption shall not permit any such employee or subordinate to practice geology independently or use the term licensed professional geologist; and
(3) Any person who is employed either by the state or by a person, firm or corporation not engaged in the practice of geology, if the person provides geologic services to the employer only and not to the general public.