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<br />reasonably high compatibility. Weed introduction from these soils will be watched closely as <br />that has been a serious problem at Queens Canyon Quarry. Chemical controls may be <br />necessary. This has become a serious problem with ruing the introduced soils, but the <br />advantages of these soils appears to greatly outweighed the disadvantages. <br />UPDATE 2001: Some topsoil collection from small volume donations is <br />occurring in the vicinity of the office. However, this is staring to create a space problem. <br />This material may soon be stopped for awhile until the amount of material can be consumed. <br />Stornt Damages (added in 1999): The large and devastating storm that caused <br />extensive damage throughout the Arkansas River Basin did significant damage to the <br />Pikeview Quarry. In fact, for a period the quarry was closed due to blockage of the access <br />road above the office. Employees were trapped in the quarry for a time until they could work <br />through the mudslide. <br />Three areas were affected. There were a number of small slumps along the access road <br />leading into the quarry. There was also a slump of a reclaimed area on the south end of the <br />quarry. But the major damage was a huge mudslide and slope failure of a fill slope above the <br />roadway leading from the office to the quarry. Many hundreds of cubic yards of fill became <br />saturated due to accumulation of water in the plant area. This basically liquefied the fill <br />material causing it to flow across the road. <br />No damages outside the permit area occurred as all of the mud flow was contained <br />within existing sediment control structures. However, it took many days to remove the <br />material. The material was deposited on the salt dome structure to be used by the City of <br />Colorado Springs. That structure is essentially completed now rather than seeing a slow <br />expansion over the next few years. <br />Interestingly, slopes highly similar to the one that failed showed no effects from the <br />storm. The failure was due to a localized topographic configuration behind the slope which <br />caused extensive seepage into the slope. Other slopes that showed no effects had much better <br />drainage. <br />This entire area will need to be repaired in the future, but due to continued seepage <br />and high levels of moisture in the non-failed slope areas no repair can be done until the entire <br />slope dries out more. When repair is effected a different drainage pattern will be established <br />behind the slope so a repeat event will not occur. <br />UPDATE 2000: The storm damaged area from last year has not been repaired <br />yet. However, considerable effort was expended on cleaning basins at the base of the large <br />slump. More difficult has been the cleaning of the culverts. Although some have been <br />successfully reopened, others remain plugged and consideration is being given to simply <br />replacing [hem. Unfortunately, replacement of the culverts will require closing the quarry as <br />the access road will need to be excavated, the pipe replaced, and then the road rebuilt. At <br />present it is being determined whether the existing culverts can, in fact, carry the load so <br />replacement is not needed. <br />Castle Concrete 2001 Annual Report M-77-211 Pikeview Quarry Page 3 of 5 <br />