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lithologic units within the Mesaverde above the coal possess <br /> transmissivities and specific yields of such low values <br /> that regional hydrology would not be influenced significantly <br /> by underground mining activities . ( See Chapter III , Section <br /> C , 4 -b ) . Also , see Willard-Owens explanation on next page (25 .1) . <br /> Other units of the Mesaverde that lie above <br /> the minable coal seams , such as mudstones , Siltstones , <br /> etc . predominate in the formation and are not considered <br /> aquifers . <br /> 2 . Description of worst possible consequences which <br /> subsidence could have on structures and renewable <br /> resource lands . <br /> a . Description of pre and post mining land <br /> uses of the permit and adjacent areas . <br /> The pre and post mining land uses of that <br /> `✓ portion of the permit area that could possibly be affected <br /> by worst case surface subsidence are the same . They are <br /> limited grazing by domestic and wild animals and aquifer <br /> recharge areas . There were no structures in the area prior <br /> to mining operations , and the only ones that will exist <br /> during mining operations are ventilation fans , and several <br /> miles of light use roads that support exploration activates <br /> and subsidence monitoring . All of these will be removed <br /> and/or reclaimed after mining ceases . None of the structures <br /> proposed for postmining recreation uses as outlined in <br /> Chapter VI are within that portion of the permit area where <br /> possible subsidence could occur . <br /> '�. b . Description of worst case subsidence <br /> U related phenomena that could occur . <br /> This analysis is based on a study and site <br />