42-414 - Special provisions applying along district boundaries LAST AMENDED 6/6/2024 Whenever a #Manufacturing District# adjoins a #Residence District#, at any point at the district boundary or within the #Residence District#, the maximum permitted #decibel# levels in all #octave bands# shall be reduced by six #decibels# from the maximum levels set forth in the table in Section 42-413 (Maximum permitted decibel levels).