Section 24-225. Refuse collection vehicles

(a) No person shall sell, offer
  for sale, operate or permit to be operated a refuse collection  vehicle,
  equipped  with a compacter, that produces a maximum sound level when the
  compacting mechanism is in the  compacting  cycle  but  not  engaged  in
  compacting  a load that exceeds 80 dB(A), when measured by a sound level
  meter set for slow response at a distance of 35 feet or  more  from  the
  compacting unit.
    (b)  It  shall be unlawful to operate or cause to be operated a refuse
  collection vehicle, including such a vehicle equipped with a  compacter,
  within  50  feet of any residential receiving property at or after 11:00
  p.m. and  before  7:00  a.m.  if  the  aggregate  sound,  not  including
  impulsive  sound,  generated by the collection and compacting activities
  exceeds 85 dB(A) when measured by  a  sound  level  meter  set  to  slow
  response at a distance of 35 feet or more from the vehicle. On and after
  July  1,  2012  such  aggregate  sound  shall  not  exceed 80 dB(A). The
  provisions of this subdivision shall  not  apply  to  the  operation  of
  refuse  collection vehicles during an emergency such as a storm or other
  event that causes delays in refuse collection.