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• Introduction <br />Mine water inflow r <br />application. No app <br />underground inspect <br />101, Grand Junction, <br />DiscLarged Water <br />esults were consistent with the predictions presented in the mining permit <br />azent measurable mine water inflow was detected during the 1997 <br />ion of the Bowie No. 2 Mine by David A. Jenkel, 2768 Compass Drive, Suite <br />CO 81506, on May 11, 1998. <br />The mine has not discharged any water from the underground workings nor do the mine portals <br />contnbute drainage to the permitted drainage system of the facilities azea. <br />Sumps <br />Two underground sumps were located during this inspection. Mine officials reported that these <br />sumps and their contents were the resuhs of machinery washing and recovered water from beh <br />conveyors where water is applied to allay respirable dust at coal transfer points. <br />The Srst sump (refer to attached map) is located near the deepest point of penetration in a three <br />entry system located neaz the mine portals and developed specifically for the storage of mine <br />water. On the date of inspection this area contained approximately 30,000 gallons of water. A <br />2" steel pipe was observed delivering approximately .17 gallons per minute. <br />• The portal sump waters were found to exlu'bit the following characteristics. <br />pH = 8.1 <br />Conductivity = 2700 umhos <br />Temp = 6.0 C° <br />Flow = .17 gallon per minute <br />The second sump (refer to attached map) is located just outby the point where coal is transferred <br />from the First Main East Beh to the First Main North Belt. This 5' deep sump contained less than <br />1' of water and had no apparent inflow. This sump is however the origination of the water for the <br />portal sump and was Stted with a small submersible pump. The characteristics and location of <br />this sump verify that ii is used as a collection point for the recovered water used for dust <br />suppression and a machinery washing station located nearby. <br />The belt lme and wash bay sump held insignificant water of uncertain origin and was not tested. <br />Other Water Sources <br />A visual inspection of the lower entry of both the First Main North Entries and the Fast Main <br />East entries produced no evidence of any other water sources or storage azeas. No pooling of <br />water along the travelways or beltlines was found. <br />• <br />