sule 66Regulation IV -1- Rule 66 RULE 66. ORGANIC SOLVENTS (Adopted 7172; Rev. Effective 72595) (a) A person shall not discharge into the atmosphere more than 15 poundsAccording to Rule 66 of Central Goods and Service Tax Act, 2017 as passed by Lok Sabha : Every registered person required to deduct tax at source under section 51