CA Water Code Section 13381

Waste discharge requirements or dredged or fill material permits may be terminated or modified for cause, including, but not limited to, all of the following:

(a)

Violation of any condition contained in the requirements or permits.

(b)

Obtaining the requirements by misrepresentation, or failure to disclose fully all relevant facts.

(c)

A change in any condition that requires either a temporary or permanent reduction or elimination of the permitted discharge.