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GBEA 3 <br /> 2. Please state the current bench configuration.What is the anticipated benching configuration moving forward? <br /> Rule 6.3.3(f) <br /> Using public domain LIDAR and the associated DEM,collected in 2020(2020 Northwest Block 1, map w2075n1175) <br /> and published in 2022, contours were produced for the Wagner Pit. Multiple maps in the application document <br /> show contours at 1 foot elevation changes. The current bench configuration is well defined in most of the maps. <br /> We should note that the DEM used has 2 ft pixels with a 10 cm elevation accuracy. The data used is available at: <br /> https://coloradohazardmapping.com/LidarDownload <br /> There have been only minor changes to the pit since the LIDAR data was collected and published. Some <br /> rock product was removed from the northeast corner (late fall 2023) and is delineated on the included <br /> 11x17 map. <br /> There have been multiple options discussed with the owner/operator concerning how specific <br /> formations (e.g.. High Knob) will be mined, to what extent, and the final configuration. Given that the <br /> product demand will be driven by management of Twin Buttes Land Co property, and is not a commercial <br /> operation, injects an uncertain into the planning process. The most likely scenario would be the <br /> reduction in height of the High Knob and the utilization of the high clay content material just to the east <br /> of the High Knob. This could take many decades to be at the elevation of the current bedrock bench to <br /> the east (the elevation of Bench B). The difference in elevation is 62 feet from the top of the High Knob <br /> to the middle of Bench B. It is envisioned that the product will be removed and the remaining slopes <br /> contoured to taper into an elevation of roughly 6280 ft (west side of bench B). There is a high degree of <br /> uncertainty. <br /> See the following 11x17 maps. <br /> Wagner Pit#M2023038, Owner& Operator:Twin Buttes Land Co LLC <br /> Wednesday, May 29, 2024 <br />