“The essential elements to pleading a dangerous condition on public property cause of action are: 1. The defendant owned and/or controlled the property; 2. The property was in a dangerous condition at the time of the incident; 3. The dangerous condition created a reasonably foreseeable risk of the kind of incident that occurred; 4a. The negligent or wrongful conduct of the defendant’s employee created the dangerous condition; OR 4b. The defendant had notice of the dangerous condition for a sufficient period of time to have protected against it; 5. The plaintiff was harmed; and 6. The dangerous condition was a substantial factor in causing the plaintiff’s harm.”
[California Elements of an Action [certain citations omitted]]