(g) For the purpose of this section, it shall be presumed that activity authorized by an order will not affect resources of statewide or regional significance if the proposed activity:
1. Occupies an area less than 10 acres in size, and
2. Does not create impervious surfaces greater than 2 acres in size, and
3. Is not located within 550 feet of the shoreline of a named body of water designated as Outstanding Florida Waters, and
4. Does not adversely affect threatened or endangered species.
This paragraph shall not operate to hold that any activity that exceeds these limits is presumed to affect resources of statewide or regional significance. The determination of whether an activity will substantially affect resources of statewide or regional significance shall be made on a case-by-case basis, based upon facts contained in the record below.