Section 24-230. Paving breakers

(a) No person shall operate or cause to be
  operated a paving breaker,  other  than  one  operated  electrically  or
  hydraulically,  unless  a  pneumatic  discharge muffler certified by the
  manufacturer of such muffler to provide a dynamic insertion  loss  of  5
  dB(A)  of  the  sound  released  from  the  air discharge of such paving
  breaker is installed on such air discharge.
    (b) No person shall sell, offer for sale for use within  the  city  of
  New  York,  operate  or permit to be operated a paving breaker that when
  operated produces a maximum sound level  that  exceeds  95  dB(A),  when
  measured  at  a distance of one meter or more from a face of such paving
  breaker.