No person shall cause or allow the discharge of more than 32.8 ml (2 cu in) of VOL with vapor pressure of 17.24 kPa (2.5 psia) or greater at 294.3 °K (70°F) into the atmosphere from any pump or compressor in any 15 minute period at standard conditions.
Ill. Admin. Code tit. 35, § 219.142