Sec. 2. If soil tests conducted in accordance with:
(1) ASTM Standard G57-78; or
(2) another standard approved by the commissioner as exhibiting the same or a greater degree of reliability and accuracy;
show that soil resistivity in an installation location is at least twelve thousand ohms per centimeter (12,000 ohm/cm), a storage tank without corrosion protection may be installed in that location during the period referred to in section 1 of this chapter.