No approval granted pursuant to this chapter, except designations, shall be valid
for a period longer than two (2) years from the date of such decision unless the required
permit is obtained within such period and the action approved is substantially begun
and proceeds on a continuous basis toward completion, or the use is established within
such period by actual operation pursuant to the applicable conditions and requirements
of such approval. The planning director, upon written request, may for good cause
shown grant up to a one (1) year extension to this time limit.
