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COLORADO LEGACY LAND <br /> $CHWARTZWALDER MINE <br /> • Phase Two discussed impacts from the alluvial valley excavation. <br /> The previous operator,Cotter,completed all of the necessary planting and mitigation for Phase One impacts, <br /> except for planting 174 riparian area trees(Ponderosa Pine,Juniper,Cottonwood&Peachleaf Willow)and 615 <br /> willow stakes. Since the alluvial valley excavation project is on-going, no planting or mitigation has been <br /> completed for Phase Two impacts. The excavation area shown in Figure E-2 corresponds to the Phase Two <br /> Upland Mitigation Area(also called Impact Area#3 in the Biological Assessment).Table E-2 below summarizes <br /> the maximum tree and shrub mitigation requirements remaining at the Schwartzwalder Site. The Biological <br /> Assessment does not specify the planting rate or specific quantities of specifics that need to be planted. <br /> Therefore, for the purposes of this Amendment it is assumed that an equal distribution of each tree/ shrub <br /> species shall be planted over the 7.1 acres of disturbed land shown on Figure F-1. <br /> A t - : 'STIMATED REMAINING PLANTING QUANTITIES FOR TREES AND WUBS <br /> Total Mitigation Quantity [Species Description and Planting Rate <br /> Item Includes Corps Ratio Quantity 2 (per acre)3 <br /> Phase One Impacts from Cut-off Wall and Temporary Bypass Pipeline Installation <br /> Ponderosa Pine 34 4.8 <br /> Juniper 35 4.9 <br /> Trees,10- 174 Cottonwood 35 4.9 <br /> gallon pots Douglas Fir 35 4.9 <br /> En elmann Spruce 35 4.9 <br /> Shrubs 165 Willow stakes (165) 23.2 <br /> Phase Two Impacts from Alluvial Valley Excavation <br /> Ponderosa Pine 17 2.4 <br /> Juniper 18 2.5 <br /> Trees,10- 89 Cottonwood 18 2.5 <br /> gallon pots Douglas Fir 18 2.5 <br /> En elmann Spruce 18 2.5 <br /> Mountain Mahogany 16 2.3 <br /> Shrubs,1- 65 Hawthorne 16 2.3 <br /> gallon pots Willow 16 2.3 <br /> Fringed Sae 17 2.4 <br /> Mountain Mahogany 16 2.3 <br /> Shrubs, 5- 66 Hawthorne 16 2.3 <br /> gallon pots Willow 17 2.4 <br /> Fringed Sae 17 2.4 <br /> Source: <br /> Schwartzwalder Mine-Phase 2,Biological Assessment,USACE File#NOW-2011-1353-DEN(IRIS Mitigation and <br /> Design Inc.,2016). <br /> Notes: <br /> i Figure E-2 illustrates that the anticipated extent of alluvial valley excavation,which corresponds to Impact Area#3 <br /> of the Biological Assessment.The maximum planting quantities for Impact Area#3 are shown,a final planting <br /> plan shall be developed after the excavation is complete with exact quantities,species,and locations. <br /> AUGUST 2022 16 AMENDMENT 6 <br />