The County Planning Agency may permit modifications to the provisions of this chapter after holding a public hearing, notice to be published at least 10 days prior to hearing, under the following conditions:
A. 
Because of the unique topographic or other conditions of the land involved, literal application of the provisions of this chapter would impose undue hardship;
B. 
Conditions are attached to plat or certified survey map approval that assure compliance with the requirements of this chapter insofar as practical;
C. 
There is compliance with the provisions of Ch. 236, Wis. Stats., and other relevant state laws; and
D. 
The purposes and intent of this chapter are observed.