If one or more provisions of this chapter, or the application of this chapter to specific properties is held by a court of competent jurisdiction to be unlawful, invalid, unenforceable, or preempted by applicable state or federal law or regulations, such provisions are deemed to be severed from this chapter. The City Council declares that it would have passed the entire chapter, except those parts declared unlawful, invalid, unenforceable, or preempted, if it had knowledge that such parts would be declared unlawful, invalid, unenforceable, or preempted. All provisions not declared unlawful, invalid, unenforceable, or preempted therefore remain in full force and effect.