1. (a) An external boundary modification. Except in the case of some basin consolidations involving adjacent basins, external basin boundaries will only be modified as a result of scientific modifications.
2. (b) An internal boundary modification. A basin or subbasin boundary may be modified, deleted, or added based on the presence or absence of a hydrogeologic barrier.

A scientific modification to a basin or subbasin boundary consists of one of the following modifications and involves the addition, deletion, or relocation of a boundary based on the geologic or hydrologic conditions that define a groundwater basin or subbasin:

Note: Authority cited: Section 10722.2, Water Code. Reference: Sections 10720.1 and 12924, Water Code.

History

1. New section filed 11-6-2015 as an emergency and exempt from review by the Office of Administrative Law pursuant to subdivision (b) of Water Code section 10722.2; operative 11-16-2015 and, pursuant to subdivision (b) of Water Code section 10722.2, shall remain in effect until revised by the Department of Water Resources (Register 2015, No. 45).