(4) tri-chloro-ethylene. (Trichloroethylene) must not exceed 23 micrograms per cubic meter.
(5), dichloromethane (Dichloromethane) must not exceed 22 micrograms per cubic meter.
(6) 1,2 - dichloro propane (1,2 - Dichloropropane). must not exceed 4 micrograms per cubic meter.
(7) chloro ethylene tetrachloride. (Tetrachloroethylene) must not exceed 200 micrograms per cubic meter.
(8), chloroform (Chloroform) must not exceed 0.43 micrograms per cubic meter.
(9) 1.3 - Bury the diene (1,3 - Butadiene) have not. exceed 0.33 micrograms per cubic meter