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 poundsthe previous definition of Rule 66 are true in there own relion. example of my version of Rule 66: yo i saw this epic drawing of Rule 66, it was of elmo getting shot down by