Laserfiche WebLink
-11- <br />Hydrolggic Balance (con't) <br />B) Ground Water <br />Blue Ribbon Coal Company has provided discussions of the ground water <br />system within the permit area, and potential impacts of mining on the <br />ground water systems, including methods of protection and impact mitigation. <br />These discussions can be found on pages 38-139, Section 2.04 and pages 120-124, <br />Section 2.05 of the permit application. <br />Blue Ribbon Coal Company has provided ground water monitoring reports of <br />data collected from the alluvial aquifer of Hubbard Creek at the mine's water <br />supply well. These reports, contained on pages 41ii and 41iii of the permit <br />application, indicate that the alluvial water is saline and is a sodium- <br />bicarbonate type. <br />The applicant has submitted a mine inflow map (Exhibit T). Only one short <br />duration inflow has been encountered to date (see page 43 of the permit appli- <br />cation). Information provided on the ephemeral seep found within the mine <br />workings indicates that cvater produced within the mine is also saline (see <br />page 42ii of the permit applications, The applicant has also committed to <br />providing an annual inflow report each year during the permit term. <br />The Division has determined that the ground water information provided is <br />sufficient to describe the prevailing hydrologic balance and the proposed plan <br />for monitoring by Blue Ribbon Coal Company is sufficient to identify impacts <br />during mining on the quantity and quality of water in the ground water system, <br />For a thorough description of the ground water hudrology of the region and a <br />discussion of the impacts of mining on ground water, please refer to the <br />Description of the Hydrologic Environment and the Probable Hydrologic Conse- <br />quences of Mining subsections of Section VIII, "Probable Hydrologic Consequences <br />of Mining and Cumulative Hydrologic Impact Study", pages 21 and 32, respectively, <br />of this document. <br />The application is in compliance with the requirements of this section. <br />Alluvial Valley Floors - Rules 2.06.8 and 4.24 <br />The Division is required to make specific written findings on the existence of and <br />effects of the proposed mining operation upon any alluvial valley floors (AVFs) <br />within the permit or adjacent areas. The findings for the Blue Ribbon Mine are <br />presented below: <br />Alluvial Valley Floor Determination <br />Hubbard Creek: <br />The geologic mapping (see Geologic Flap - Exhibit 'R' of the permit <br />application) has identified an isolated body of alluvium along Hubbard <br />