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• Mine Inflow <br />The Mine Inflow Study at the Bowie No. 1 Mine was conducted during July, 1997. III West <br />Submains and III South Submains were being advanced during the time of the study. Minor <br />inflows were encountered during advancement of each section and would essentially cease within <br />one to four weeks after interception by mine workings. Seeps continued to exhibit the same <br />characteristic patterns expected when mine workings intercepted perched aquifers. Seeps <br />encountered during the past year failed to produce even moderate flow (>1 gpm) for any <br />significant periods of time. <br />No water was dischazged from the mine to the surface during the 1996-1997 reporting period. <br />The operator has no plans to discharge water from within the mine to the surface during the 1997- <br />1998 reporting period. No water has been dischazged from the mine to date. The northern end of <br />the III South Submains remains available to hold excess water which may be encountered <br />although this is not anticipated based upon the patterns of inflow established thus faz. <br />Water Importation and Balance <br />Approximately 648,000 tons of coal was produced from the Bowie No. 1 11dme from July 1, 1996 <br />through June 30, 1997. Production estimates for the following twelve month period are greatly <br />reduced due to coal quality and market issues. Mine water importation is estimated from <br />recorded flows and related tonnages at the mine from September, 1985 through April 1986. <br />Calculations from recorded measurements indicated approximately 2.5% by weight of imported <br />water (in relationship to the total raw coal tomiage) is used for face and roadway dust control. <br />• This translates to an import water usage of approximately 3.8 million gallons from July, 1996 <br />through June, 1997. <br />From historical detailed coal sampling at the face and on the surface, an approximate 1% <br />moisture gam from the in-place value to the tram load-0ut point is apparent. Consequently, <br />approximately 1.5 million gallons of water were imported for face coal dust control. Therefore, <br />approximately 2.3 million gallons of water were used for roadway dust control with a small <br />percentage of this evaporating as humidity into the air and being expelled from the mine. <br />Hydrologic Impacts <br />There was virtually no water inflow into the mine. Therefore, the hydrologic impact caused by <br />the mining operation is either non-existent or not measurable. <br />Conclusions <br />Mine inflow into the Bowie No. 1 Mine continues to be low. The present estimated inflow rate <br />remains at less than 1 million gallons per yeaz. The importation of water has continued to far <br />exceed the occurrence of natural mine inflows. No mine dischazge and minimal importation of <br />water is anticipated during the 1997-1998 reporting period. Therefore, the quality and quantity of <br />surface water adjacent to the mine will not be affected. The operator will continue to submit the <br />Annual Subsidence and Hydrology Report which will s„n,nwri~r all subsidence and hydrology <br />data. This study is part of that annual report. <br />• -2- <br />