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"7 <br />Lake, Pueblo water level restricted• <br />�. <br />-0 rase ab� Qut dams, stability <br />insw `A/ c � Z I I (o trl P4 -2 <br />tj c "lJim Mallory causing concern that the same feet below the top of the dam. <br />6` Spcial to The Denver Post thing might happen in Pueblo. <br />b "`'PUEBLO — Bureau of Recla- "Geology work at that time Christenson said the study might <br />determine that the dam is safe and <br />mation engineers have restricted (when the dam was built) was ade- <br />?`the water level at Lake Pueblo af- quate for the time," said Christen- that no additional reinforcement is <br />odt� an inspection raised concerns son. "We have improved geo -tech required. <br />that the dam that holds back the standards now." It also might reveal that addi- <br />;,,Wvater might be unstable. Christenson said the 10,250 -foot- tional engineering measures might <br />c`vI U.S. Bureau of Reclamation dep- long dam consists of a concrete be necessary. <br />u y area manager Dennis Christen- center section about 1,750 feet long possible fixes could include an <br />-7�6n said engineers think that keep- and a longer earthen abutment at <br />°Ift'the water at least 10 feet below each end. It is the foundation of the additional berm downstream at the <br />the top of the dam; will provide an left abutment as seen from the foot of the dam or the stringing <br />- 4'dequate safety buffer until fur- lake side of the dam that has support cables through vertical <br />91t&'r engineering studies can be caused some concern, said the gov- holes in the dam extending down <br />completed, in October. ernment engineer. into the bedrock, said Christenson. <br />_191'Ghristenson stressed that engi- Christenson said the dam is in- <br />rieers are just being prudent in im- spected about every six years, but a <br />3{'posing the limitation and are not two dam tenders check the equip- a , <br />-pt+edicting an imminent cata- ment installed in chambers inside <br />i; strophic failure of the structure. the dam everyday. They also mon- •� •• <br />"We feel the dam is safe," said itor instruments that measure r (THE STUFF BETWEEN TILES) 1 <br />Christenson. stresses on the dam and check for FREE ESTIMATES <br />When the dam was built in the tilt or movement of the giant strut- Tired of moldy, missing, dirty, cracked <br />early 1970s, engineers knew there ture. grout? Stain/change grout color, clean, <br />were seams of shale in the sand -. The water was highest at the seal, regrout and repair. <br />stone bedrock on which the 250- dam when it came within 10 feet of <br />f* high structure rests. Since the top in 1996. It won't be allowed <br />then, what engineers call "sliding to exceed that level, which is 85 <br />fa <br />Pure" has occurred along some percent of the reservoir's capacity. � <br />sole seams at other dam sites, Tuesday the water level was 27 <br />