Any powers herein granted to the interstate environmental commission shall be regarded as in aid of and supplemental to, and in no case a limitation upon, any other powers legally vested in said commission. No provision of the Public Health Law and no provision of the Environmental Conservation Law, if such provision of the Environmental Conservation Law was derived from a provision of the Public Health Law, which is inconsistent with the provisions of the tri-state compact shall be applicable to the interstate environmental commission or to any matter governed by the tri-state compact.