None of the provisions of this chapter shall be applicable to any mobile home located on the site of a construction project, survey project, or other similar work project and used solely as a field office or work or tool house in connection with such project, provided such mobile home is removed form said site within 30 days after completion of such project.
A lot of record existing prior to the effective date of this chapter, which does not meet the minimum lot size requirement of 65,340 square feet specified in Article III, § 106-7, may be legally occupied by a dwelling, provided that:
A. 
Lot size is at least 20,000 square feet;
B. 
The requirements of §§ 106-8 through 106-12 of Article III are met.