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III <br /> M-2001-001 Line Camp Pit Amendment#2 (Expansion) 1:11t1 <br /> Ma. G-2. Flood slain Map(From Montezuma County GIS) <br /> This map more clearly shows the new (2023) floodplain <br /> delineation as done by FEMA for the Smith's Materials <br /> mil\ parcel, including the permitted area <br /> , �i j _ The impact of mining is to expand the floodplain <br /> ', (increase its capacity) and will therefore not expand the <br /> floodplain width at any point. An example of that is the <br /> t`` dark blue area (Zone AO - Pond #4)just south of the <br /> 1I'11212 industrial symbol on the map:The floodplain depth in <br /> z' �--•� that area is 2 feet(or less) above the natural ground <br /> 1. surface (pre-mining) and as shown in the cross- <br /> sections several feet above the OHWM of the pond. <br /> Pond #5 was not fully excavated at the time of the <br /> flood survey/study and only a small part of that basin is <br /> // ' shown as being in the Zone AO.Zones AO and AE to <br /> the north of the old ranchstead (in the expansion area) <br /> will be expanded by mining in that area. Since the <br /> 1 setback from the river OHWM is 350+ feet in the <br /> expansion area, there is no significant erosion and no <br /> t, f significant possibility of pit capture. <br /> t145 <br /> 1,,..5 <br /> AE'Flood Zone <br /> Ad Fl ood Con e <br /> I <br /> / A ' 1 <br /> The current map(both Maps G-1 and G-2)are significantly different from the FIRM used for the original <br /> application and AM-1 application.At that time,a detailed, formal floodplain analysis had not been performed. <br /> 5182-22-001 WASTELINE, INC. Page 38 of 65 <br />