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demonstrated during permitting of t(tc La Plata No. 1 Mine that this water right has been <br />abandoned; therefore, no further investigations or monitoring are being required. <br />Two water supply wells are located in the immediate vicinity of the facilities azea: one at the King <br />Coal Mine and one at the La Plata No. t Mine. A third water well, located in an up slope terrace <br />deposit, has been capped and abandoned. Although no completion data have been submitted. it <br />appears that the abandoned well was completed in the underlying Point Lookout Sandstone. The <br />National King Coal water supply well is completed in the Hay Gulch alluvial aquifer just west of <br />the facilities area. The La Plata No. 1 Mine well, which has been reported to be in existence <br />since about 1905, is located near the facilities area of that mine. This well, for which a water <br />right has been filed is probably completed in the Point Lookout Sandstone. <br />]nformation concerning other welts within one mile of the permit boundary is contained in section <br />2.04 of the permit document. <br />Surface Water Hydrology <br />The surface facilities of the King Coal Mine are located in a small ephemeral drainage basin which <br />is vibutary to Hay Gulch. The permit area and ttnderground mining extending to the south of the <br />surface facilities and underlay another small ephemeral drainage basin which is tributary to Pine <br />Gulch. Pine Gulch flows into Hay Gulch approximately 4 mites downstream of the facilities area. <br />Hay Gulch is a tributary of the La Plata River and their confluence is located about 8 miles <br />downstream (southwest} of the King Coal Mine. <br />There are no perennial streams within the permit area. Surface water within the small ephemera( <br />drainage basin in which the mine is located is limited to ntnoff from rainfall and snowmeh events. <br />Runoff from the undisturbed upper pans of the east basin is routed around the disturbed areas <br />through a ditch system. Runoff from the undisturbed west basin and the disturbed area is <br />conveyed through a system of culverts and ditches to two sediment ponds at the base of the 86 <br />acre contributing area. Disc:hazge from the ponds enters Hay Gulch, a tributary of the La Plata <br />River, <br />There is no flowing stream within the vailey of Hay Gulch at the location of the mine. <br />Historically, streamtlow has been diverted into an irrigation ditch on the north side of Hay Gulch. <br />Water for irrigation purposes is taken from the La Plata River and at times has been reported to <br />be high in salinity and therefore not suitable for irrigation. Because of this fact, the King Coat <br />Mine has agreed to sample the irrigation ditch twice a year for two irrigation seasons to create a <br />baseline and determine the qualiry of the ditch water. <br />An ephemeral stream channel may have existed in the bench area of the mine prior to disturbance <br />of the site in 1941. This pre-mining channel would have been located in the lower portion of the <br />mine. Runoff from larger events would occur as channel flow, whereas smaller events, would <br />primarily recharge the alluvium from side-slope areas. For this rearon, apost-mining channel will <br />be reconstructed in the current location of the facilities area. A review of the chartnel design <br />indicates it meets the requirements of Rule 4.0.3. <br />