92. A holder of a management permit for mining activities who digs trenches or other excavations for mining exploration activities shall comply with the following standards:(1) before digging trenches or other excavations, the permit holder shall remove organic matter and pile it up for later reuse more than 20 m from any watercourse or lake, as measured from the natural high-water mark; and
(2) when the trenches or other excavations are abandoned, the permit holder shall fill them in and then respread the organic matter that has been piled up.