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-lo- <br /> around 30,000 gpd from a production well installed in Stevens Gulch in an area <br /> of alluvium located approximately 112 mile northwest of the mine <br /> projected lifeof mine <br /> facilities area. One ot�ra=PaeOf�115dsquareemiles1andhflowsJinto West Roatcap <br /> area, Long Draw, drains No. 40) submitted by the applicant , <br /> Creek. From the alluvial valley floor map ( deposits, due to the steep <br /> the entire Roatcap Creek system contains no nelirri irrigation ditch, the Overland <br /> topography and overall drainage gradient. One nortg of the <br /> Ditch, follows the topographic contours at the northernmost boundary of <br /> Mesa <br /> In addition, a pipeline aqueduct used by <br /> life of mine area. <br /> Pipeline Co. follows Stevens Gulch through the permit area. <br /> There are several springs and numerous ponds within the permit and hydrologically <br /> adjacent area. It appears that, from the data submitted to date, most oft these <br /> on ds are intermittant and depend upon seasonal precipitation and <br /> springs and p this will need to be confirmed through <br /> long-term weather patterns. However, arts of the year. The <br /> periodic field checking during both the wet and dry p <br /> d to landslide complexes , <br /> source of most of the springs appears to be relate <br /> to faults and fractures, to areas of colluvium/alluvium where groundwater has <br /> rge points of local perched groundwater in the <br /> accumulated, or to the discha <br /> is <br /> lenticular sands of the Mesa Verde, but drill ( indicates <br /> t s <br /> 67-70, Section2.04, <br /> probably not a significant source of groundwateerr (see <br /> see pag <br /> volume 8) . <br /> Effects of Minin on Groundwater <br /> water from faults and fractures <br /> As the Orchard Valley mine operation progresses, <br /> which could be intercepted by <br /> the operation may appear as mine inflows. Water <br /> amounting to 1 gpm has been reported ino he mine yin relwater to a NEinW ttrending <br /> fault in Section 13. There is also a p sem which may <br /> Rollins Sandstone and in other Io r, ones either elow the through ,fa/ultsaor fracturesappear <br /> as mine inflows from the mine f floor heaving. Increased inflows may <br /> penetrating the lower strata, or from drostatic <br /> occur with increased depth of mining as a reshot 10fgpmccurrently seeps into the <br /> pressure within the strata. Water amounting of drill hole TH-45 (see <br /> workings from the floor of the mine in the vicinity <br /> Map 43) . <br /> An additional effect on groundwater couaboveld sthe workings ult if maybecdewateredcally <br /> perched groundwater aquifers in strata these aquifers <br /> through subsidence cracks or fractures. The impactsroandwater of rwas encountered <br /> would, however, be insignificant since very little g <br /> during drilling, the extreme overburden depth <br /> tht would <br /> thefeatures subsidence <br /> there <br /> effects, the clay in the overburden may e other <br /> are no wells within the area which e surface. The ogreatest spotential�for sub- <br /> colluvial/alluvial deposits near the s <br /> sidence to have an effect on groundwat o wellsis texisthin hadjacent toathel life nOf containing <br /> deposits of alluvium.and colluvium. Tw <br /> mine area which withdraw water from stream alluvium, one in Stevens Gulch (use <br /> by CWI) and the other to the North of the mine area East 13 the Morrell This <br /> w <br /> Camp near the Terror Creek drainage ea(NW4NW4beSmined, andTinSanRarGea•where the <br /> latter well is located excess <br /> The Stevens Gulch well field, <br /> overburden depth is in excess of 1,500 feet. <br /> a to be undermined over the life of the mine and has <br /> however, is within the are <br />