Any sign hereafter erected or maintained shall
conform with the provisions of this section and any other ordinance
or regulations of the Township of Lower Makefield not inconsistent
herewith. Any lawful sign which received a sign permit and which is
existing at the time of the passage of this chapter that does not
conform in use, location, height or size with the regulations of the
district in which such sign is located shall be considered a nonconforming
use and may continue in such use in its present location until replacement
or rebuilding becomes necessary for a period not exceeding two years,
at which time a zoning permit will be required and the sign brought
into conformity with this chapter. Nonconforming temporary signs shall
be permitted for a period of six months only.