The owner of the Bonaventure Hotel in Los Angeles could not state a claim for inverse condemnation or nuisance against defendant for the disruption caused by defendant’s digging a trench down Fourth Street to build a subway tunnel.  In prior litigation, the court had determined that due to unstable soil conditions, an underground tunneling operation was infeasible.  An inverse condemnation claim for an intrusion other than the taking or damaging of property may be stated only upon a showing that the owner’s property was specially affected unlike other surrounding property.  The construction’s blocking access to the hotel and allegedly excessive noise and dust would be actionable only if it were an  “unnecessary and substantial temporary interference.”  Plaintiff did not allege facts showing the blockage, noise or dust were unnecessary or specially affected the hotel and not surrounding properties. Plaintiff did not state a viable nuisance claim because it did not allege facts showing the project’s adverse  effects on the hotel were “unreasonable.”  Also, the defendant was immunized from liability for nuisance by Civ. Code 3482, which states that nuisance actions may not be brought if the project is specifically authorized by statute.  Here, Pub. Utilities Code 30631 authorized defendant to build transportation facilities like the subway line, thus immunizing it from liability for nuisance.