Section 6.12 - Other Rules(1) The Department may where appropriate, on petition or on its own motion, grant an exception from the provisions of 220 CMR 6.00, upon such terms that it may determine to be in the public interest.(2) A gas company may, at any time, file with the Department an amended GAF. An amended GAF filing must be submitted seven business days before the first billing cycle of the month in which it is proposed to take effect.(3) The Department may at any time require a gas company to file an amended GAF.(4) The operation of the cost of gas adjustment clause is subject to all powers of suspension and investigation vested in the Department by M.G.L. c. 164.Amended by Mass Register Issue 1315, eff. 6/17/2016.