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5. New soil and overburden stockpiles - Soil and overburden stockpiles continue to be <br />established as new azeas aze opened. All stockpiling of soil and overburden is done adjacent <br />to the mining pits so it can easily be redistributed in the pit when the mining is completed. <br />The primary stockpiles for the most upland pits aze to the east of the pits. This is also where <br />the most significant highwalls will occur. Stockpiling west of the pits is also done to a lesser <br />extent in the upland azeas because the west side of the pits will almost be daylighted. <br />Therefore, not as much soil or overburden will be needed there. <br />At the lower elevation pits closer to the floodplain stockpiling is done al] around the <br />pit, but primarily where it is expected a highwall of some kind will be established. In <br />locations were the pit will daylight to the floodplain, little stockpiling is done as little soil or <br />overburden will be needed there. <br />Some of the older very large stockpiles have been reduced as backfilling continues in <br />mined out pits. The practice of stockpiling adjacent to the pit rather than in discrete locations <br />where "mountains" of material aze built seems to work much better and with higher <br />efficiency and producing much less visual impact. Due to the highly variable nature of the <br />sand deposit, creating huge stockpiles on particular locations may actually end up burying <br />mineable sand that cannot be accessed until the entire stockpile is consumed in backfilling. <br />As has been learned, one cannot tell where sand is and where it is not and therefore trying to <br />anticipate where to place large stockpiles of soil and overburden carries considerable risk of <br />limiting the operation. Stockpiling adjacent to the pit works far better. <br />RECLAMATION ACTIVITY IN THE LAST YEAR: <br />1. Climatic summary ofprevious year - The previous years of 2003 and 2004 saw <br />precipitation rise to about normal levels which greatly aided in the recovery of the native and <br />reclamation vegetation after the 2001/2002 drought. In fact, during the spring of 2005 <br />wildflower blooms on the native prairie was spectacular. Unfortunately, the abundant <br />moisture also encouraged very intense weed growth in both bottomland and upland <br />vegetation. This weed growth was undoubtedly a response to not only the available moisture <br />but also the severe thinning of the vegetation during the 2001 and 2002 drought when growth <br />of native grasses was minimal to nonexistent. Continued grazing during that drought period <br />further thinned the native grass cover and created vast areas of a suitable annual weed habitat, <br />especially for cheatgrass. <br />Late in 2005, the weather patterns once again changed back to a drought <br />pattern. Little precipitation fell as rain or snow throughout the fall and winter of 2004/2005. <br />The polaz jet remained faz to the north which resulted in normal or faz above normal <br />precipitation in the Pacific Northwest as well as in Montana and Wyoming. South of the <br />Cheyenne Ridge, precipitation was essentially nonexistent and strong dry and warm westerly <br />and northwesterly winds were frequent throughout this period. As a result, the drought status <br />changed from essentially no drought in the middle of 2005 to severe drought by the spring of <br />2006. Soil moisture depletion reached neaz record levels and this applied to both topsoil and <br />subsoil moisture depletion. <br />Mazch, April and May remained extremely dry. This is normally the wettest time of <br />the year, but very little precipitation was received. May, which should produce well over two <br />inches of precipitation, saw essentially no rain or snow. As a result the drought status <br />continued to decline to levels more intense than those seen in this azea during the Dust Bowl. <br />Status report for 2006 (July 15, 2006) Page 8 of 13 <br />