The enclosed Decision Notice has been prepared for the Reintroduction of Native Westslope Cutthroat Trout in Greenhorn Creek by Removal of Nonnative Hybrid rainbow x cutthroat and brook trout with Rotenone. The project proposal was to remove hybridized cutthroat and brook trout from 15.5 miles of Greenhorn Creek, and refound with pure westslope cutthroat trout from up to six populations. Two public comments were received during a 30-day comment period ending 21 July 2013. Based on the Environmental Assessment and need to conserve westslope cutthroat trout, it is my decision to proceed with the Greenhorn Creek westslope cutthroat trout conservation project. I find there to be no significant impacts on the human and physical environments associated with this project. Therefore, I conclude that the Environmental Assessment is the appropriate level of analysis, and that an Environmental Impact Statement is not required.