A. At any time prior to the expiration of the vesting tentative map pursuant to Section 16.10.070 of this chapter, the subdivider, or his assignee, may apply for an amendment to the vesting tentative map.
B. In order to file for an amendment, the subdivider must bear the burden of proof that a substantial change is warranted and that the amendment should be granted.
1. "Substantial change" includes an adverse change in any of the physical conditions within areas affected by the project including land, air, water, mineral, flora, fauna, ambient noise and objects of historic or aesthetic significance. An economic or soil change by itself shall not be considered a significant effect on the environment. A social or economic change related to a physical change may be considered in determining whether the physical change is significant.
2. The substantial change however, shall not change or lengthen the vesting period granted by Section 16.10.070 of this chapter.
(Ord. 2722 (part), 1990).