In People ex rel. Younger v. Local Agency Formation Com. (1978) 81 Cal.App.3d 464, the court distinguished Simi Valley from a case in which the de-annexation of some 25 square miles of land from the City of San Diego was proposed. "Here there are competing zoning and land use plans contemplated for the 25-square-mile area. This new planning, new zoning, new land use, in reasonable probability, would not occur unless de-annexation is permitted. Further, here, as the trial court found, de-annexation would result in the termination of some public services currently being provided by the City of San Diego. Deannexation would interrupt police, fire, sewage, and disposal services, street development and urban planning. These services are related directly and would follow upon the proposed governmental change. Such disruption would have a possible adverse substantial impact upon both the physical and human environment." (81 Cal.App.3d at p. 478.)