Exemptions from the drainage plan requirements are as specified in §
137-6.
A modification to a submitted drainage plan for a proposed development
site which involves a change in control methods or techniques, or
which involves the relocation or redesign of control measures, or
which is necessary because soil or other conditions are not as stated
on the drainage plan (as determined by the Township Engineer) shall
require a resubmission of the modified drainage plan consistent with
and subject to review per the provisions of this chapter.