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Introduction <br />1990 ANNUAL MINE INFLOW REPORT <br />1 In compliance with Stipulation No.29, Permit No. C-81-038, <br />_ Cyprus Orchard Valley Coal Company submits the following Annual <br />' Mine Inflow Report for the period of July 1, 1989 through June 30, <br />1990. <br />Mining Locations and Projections <br />I Pillar retreat mining of Panel G was completed in July, 1989. <br />Entry development of Panel H occurred from August, 1989 through <br />April, 1990. Pillar retreat mining of Panel H was initiated in <br />May, 1990 and continued through June, 1990. <br />Mining projections for the period of July, 1990 through June <br />I 1991 include the completion of mining in Panel H, advance and <br />retreat mining in Panels A and A+, and the further development of <br />_ the II West Submains to the west of East Roatcap Creek (see Permit <br />Term and Long Term Mine Planning Map No. 2-5). <br />Mine Inflow <br />_ The mine inflow study at the Orchard Valley West Mine was <br />' completed during July, 1990. Advance mining in Panel H was <br />underway during this time. No measurable inflows were noted during <br />the mine inflow study inspection. Five locations exhibited minor <br />seepage from both roof and floor sources, while four locations were <br />mapped as having accumulated water in sumps. <br />I The primary source of inflow noted in the 1989 Annual Mine <br />Inflow Report was the raise-bored ventilation shaft at crosscut q10 <br />of the South III Submains. This source was noted to exhibit a <br />I reduced flow rate during the 1990 inflow study as anticipated <br />following the grouting of the shaft. <br />I The remaining inflows at the orchard Valley west Mine <br />continue to consist of seepage from both the roof and the floor <br />with floor seeps predominating. Seeps continue to last <br />1 approximately one to four weeks after exposing entries with the <br />1 continuous miner. To date, most of the seeps encountered in the <br />mining process fail to produce measurable flows for any significant <br />period of time. <br />No water was discharged from the mine to the surface during <br />1 the '89 - '90 reporting period. Cyprus Orchard Valley again has no <br />plans to discharge water from within the mine to the surface during <br />the '90 - '91 reporting period. No water has been discharged from <br />l the mine to date. The northern end of the South III Submain <br />1 remains available to hold excess water which may be encountered <br />