(a) Enter at reasonable times any establishment or site where an underground storage tank is located;
(b) Inspect and obtain samples of a regulated substance contained in an underground storage tank; and
(c) Conduct an investigation of an underground storage tank, associated equipment, contents or the soil, air or waters of the state surrounding an underground storage tank.
(2) If any person refuses to comply with subsection (1) of this section, the department or a duly authorized and identified representative of the department may obtain a warrant or subpoena to allow such entry, inspection, sampling or copying. [1987 c.539 §30 (enacted in lieu of 468.907)]