Upon receipt and consideration of the comments, the displacing public entity shall determine whether or not:
If any of the above determinations by the displacing public entity is negative the displacing public entity shall revise the plan as necessary. Substantial modifications in the plan shall be submitted for review and comment as provided in section 6126. If necessary for timely implementation of the plan or execution of the project, the head of the displacing public entity may shorten the time allowed in section 6126 for review of modifications.
Cal. Code Regs. Tit. 25, § 6128