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<br />REVIEW QUESTION <br />2.04.5 <br />(1)(b)(i)(a) Please give specific locations on a map and on cross-sections <br />which show where subsurface water zones are encountered. <br />OCCD MICC <br />A potentiometric surface map of the overburden fluid levels is <br />presented in Addendum of Appendix R (Final Groundwater Report in <br />Volume III). The specific locations of subsurface water zones <br />are illustrated utilizing the extensive exploration drilling <br />program data. Geophysical (resistivity) and drillers l.og data <br />will be used to locate and map water producing zones along with <br />bore hole water levels. This data is presented in the form of a <br />water level contour map (piezometeric surface map) for the over- <br />burden. During developmental and exploratory drilling most of <br />the holes revealed dry overburden. Any bodies of water con- <br />tained in the overburden will be lenticular extremely localized <br />in extent and probably perched above the coal aquifer. Rela- <br />tively dry overburden and localized, lenticular water bearing <br />strata are characteristic of coal sequences throughout the <br />west. At the H-G Mine, these factors are directly attributable <br />to: <br />o Limited recharge lateral extent (outcrops) <br />o Limited precipitation <br />o Lack of suitable aquifer material in the overburden <br />o The vertical movement of precipation recharge to the <br />coal aquifers <br /> <br />