Resolution Tailings Storage Facility Alternatives: Comparative Analysis of Ordinary High Water Mark, Aquatic Features, and Potential Waters of the U.S.

This memorandum has been prepared to document the extent of oridinary high water mark (OHWM), aquatic features (seeps and springs), and potential WOTUS for compartitive analysis between the five TSF alternative footprints. This analysis focuses specifically on the ephemeral wash systems within each of the alternative footprints, based largely on a desktop review of high quality, recent aerial photographs (with the exception of Alternatives 2 and 3 for which a formal AJD was completed [SPL-2014-00064-MWL]). Aquatic features such as seeps and springs within the TSF footprint has also been included for comparative purposes.