Ventilation requirements.
Denver Revised Municipal Code § 31-26
in effectSec. 31-26. - Ventilation requirements.
(a) Every building or portion thereof housing dry cleaning equipment or processes shall be ventilated so as to prevent excessive concentrations of solvent vapors in the machine service or public access area.
(b) All dry cleaning equipment including closed, and semi-closed systems, and drying units shall be provided with an exhaust system capable of maintaining a minimum of one hundred (100) feet per minute face velocity through the loading door whenever the loading door is open.
(c) Special provisions for coin-operated dry cleaning equipment:
(1) Ventilation of public access area shall be engineered so that the air flow will be from public access area to the machine service area.
(2) An interlock system shall be provided on each machine to prevent the loading door from being opened during the normal cycle. This system shall be either electrical or mechanical and so constructed that in the event of mechanical or electrical power failure the machine fails safely.
(d) A supply of make-up air equal to or greater than the total volume of air exhausted from the establishment shall be provided in order to eliminate any negative pressure which might otherwise develop within the structure.
(e) All ventilation equipment, piping or ducting shall be kept clean and in operating condition.
(Code 1950, § 972.2-12)
Source: City and County of Denver, Revised Municipal Code and Charter (Municode Library, library.municode.com)URL: https://library.municode.com/co/denver/codes/code_of_ordinances?nodeId=TITIIREMUCO_CH31LA_ARTIIDRCLES_DIV1GE_S31-26VEREFetched: 10/27/2026