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n, ~~~u~ <br />[pQpOgPTIOM <br />• 1.0 SiJ~1;~LARY aID COVCLL'SIO`:S <br />Ash and S0, scrubber sludge which are disposed in the <br />Trapper Mine may generate contaminants. These contaminants could <br />enter ground-water systems at the Trapper "Sine. Previous studies <br />have indicated that ground-water flow in the mine area is docan- <br />dip and parallel to bedding olar.es (:d0-155). If this is true, <br />any contaminants will move to greater depths and :ai11 pass far <br />beloca the Yampa River. <br />Indirect evidence indicates that there may be signifi- <br />cant vertical, cross-bed components of ground-caater flow. In <br />particular, there may be an up-section floca component in the <br />northern mine area and near the 1'a.^.tpa River (GR-R-402). <br />The objective of this study was to determine vertical, <br />•~ cross-bed ground-water flow relationships in the vicinity of the <br />Trapper Mine and the Yampa River. <br />Vertical relationships of ground-water levels were inves- <br />tigated at three test well sites. Three piezometer wells Caere <br />constructed at each of. the three sites. The wells at each site <br />were completed at different depths. Ground-water levels Caere <br />measured for well test intervals at varying depths. Vertical re- <br />lationships.of ground-water levels were established at each site. <br />These vertical relationships were used to draw conclusions about <br />vertical, cross-bed ground-caater flow. <br />In the southern (higher elevation) parts of the Trapper <br />Mine (Well Site GZ), caithin strata above the Locaer Idilliams Fork <br />Formation, ground-water levels decrease with increasing depth. <br />Ground-water movement in this region has a downward, docan-section <br />component. Shalloca, saturated strata are recharging deeper strata, <br />~~ <br />1-1 <br />