The Chief Executive Officer may waive any requirement of this rule, except to the extent that the requirement is mandated by the Act, other applicable law or by the terms imposed on the Clean Water State Revolving Fund by the Maine Municipal Bond Bank or Maine Department of Environmental Protection, in cases where the deviation from the rule is insubstantial and is not contrary to the purposes of the Program.
94- 457 C.M.R. ch. 317, § 10