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MINING PLAN <br />process. Although roads rarely involve excavation, vibration is a hazard with <br />regard to unstable, buried explosives, especially if the explosive is near the <br />surface. This provision is required to comply with terms of the lease and to <br />address liability issues. <br />Fuel Storage Requirements -APPLIES TO ALL LOCATIONS: Temporary and more <br />permanent fuel storage areas must be properly located and protected. <br />1. No fuel storage may occur in or near a drainageway where floodwaters could <br />potentially reach the storage location. <br />2. All storage tanks will be surrounded by a properly sized berm. <br />3. The basin where the storage tank is placed will be sealed with a durable plastic liner or <br />other impermeable and durable material so as to avoid spills from leaking into the <br />ground or escaping the containment berm. <br />4. The liner material will be frequently inspected to insure rips and tears are repaired and <br />the integrity of the liner is maintained. <br />Mining Process Sequences: In general, mining in all areas will follow a similar <br />sequence. First is removal of the soil, then the overburden, and then the underlying sand. Soil and <br />overburden stockpiling will occur near or adjacent to the mining areas so as to reduce the costs of <br />backfilling and replacement of the soil. More details on this sequence will be provided further on in <br />this plan. <br />Problems Associated with Intermittent Deposits: As described in a previous section of <br />this exhibit, the sand deposits, particularly in the upland areas, exhibit a very highly non-uniform <br />distribution. This is a result of the fact that the sand was deposited by a blend of alluvial deposition in <br />broadly meandering streams on a multitude of erosion surfaces as well as windblown sand deposited <br />in protected areas in the landscape that was present at that time. Because all of these variations could <br />not conceivably be defined in exploration without very extensive surface disturbance, the mining must <br />adapt to whatever variability is found. <br />Unfortunately, as has occurred in the past, this tends to create a patchwork mining pattern. In <br />the past it has been found that very good deposits can abruptly come to an end over a matter of a few <br />tens of feet. But careful examination can sometimes show the good deposit heads off in a different <br />direction. On the other hand, and more commonly, it simply ends and does not continue in any <br />direction. This probably occurs because the multiple erosion surfaces interacted with each other and <br />sometimes an excellent deposit in one area was removed in an adjacent area by a subsequent erosion <br />cycle which was followed by deposition of a different type of material at a different time. <br />Coal Creek Sand Resource Amendment 3 (2005) - M-1988-044 Exhibit D Page 22 <br />