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Rifle Gravel Pit #1 July 2023 <br /> • Mulch will be applied to the upland areas only at a rate of 1.5 tons/acre of hay <br /> (preferred) or 2 tons/acre of straw. Mulch will cover the upland areas with no bare <br /> areas, to a depth of between V-2". Mulch will be anchored by mechanical crimping, <br /> followed by mulch tackifier. Mulch will not be applied during windy conditions. <br /> • Prohibit noxious weed species through weed control methods as documented in <br /> Attachment C. See Section 6.6 for additional information. <br /> 6.1.1.4 Buildings and Structures <br /> There are no historical structures on the property, per a Class III cultural resource inventory <br /> completed by Flattops Archaeological Consultants. <br /> 6.1.1.6 Signs and Markers <br /> Scott will post a sign at the entrance of the property that will be clearly visible from the <br /> access road, with a minimum size equaling one hundred and eighty-seven (187) square <br /> inches, such as eleven (11) inches in heights and seventeen (17) inches in width with the <br /> information specified in Rule 3.1.12(1)(a)-(c). <br /> The boundaries of the Affected Lands will also be marked by monuments or other markers <br /> that are clearly visible and adequate to delineate such boundaries, specifically the area <br /> proposed to be disturbed (Affected Lands) by mining operations for which a Financial <br /> Warranty and Performance Warranty have been posted. <br /> CR 346 will be used for emergency access to Rifle Pit. <br /> 6.1.1.6 Spill Reporting <br /> Scott will notify the DRMS Office of a spill of any toxic or hazardous substance, including <br /> spills of petroleum products, within 24-hours of the time of the spill. The notice will include <br /> information outlined in Rule 3.1.13(2)(a)-(f). <br /> 6.2 Post-Mining Land Use <br /> The adjacent properties are primarily agricultural, county and interstate roadways, oil and <br /> gas well pad and the Colorado River. Under current conditions, the land use is agricultural <br /> and passive wildlife habitat. The post mining land use will be passive wildlife habitat, <br /> consisting primarily of the open water of the pond, with a wetland vegetation fringe <br /> (greenbelt area) and upland reclamation grasslands as described. The post mining pond will <br /> not have a direct surface hydrologic connection to downstream waters of the Colorado <br /> River, but will be connected via shallow alluvial groundwater through the underlying <br /> permeable gravels. The water level of the pond is expected to fluctuate in concert with the <br /> natural fluctuations of the river's water table, and will also continue to receive irrigation <br /> tailwater discharges from the ditch. Wildlife use is expected to include incidental use by <br /> waterfowl and big game for foraging. The woody vegetation in the wetland fringe (greenbelt <br /> area) is likely to support migratory bird nesting once it has matured, and the pond will <br /> support micro- and macroinvertebrate assemblages, amphibians (primarily bullfrogs), and <br /> naturalized carp populations that already existing in the tailwater channel under current <br /> conditions. <br /> 39 <br />