The changes are: 1) the inclusion of new definitions in Section R317-1-1, including several terms that were defined or used in Section 19-5-105.3; 2) a new Section R317-1-10 adds a provision for DWQ to initiate an Independent Scientific Review when the Director determines that an issue may have a significant financial impact on stakeholders or when an action may be precedent-setting or controversial; and 3) Section R317-1-10 also includes the process for conducting an Independent Peer Review under Section 19-5-105.3.