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<br />This retort :•:as prepared at the request of Ferguson Engineers of <br />Durango, Colorado. Te purpose of t::e investigation and report is to de- <br />terrine the effects of underground mining, on ground ;rater at the Peacock <br />Co=_1 tine. The mire is located in a portion of Section 29, T35r,, P.11;l, <br />~. ~ L3 Plata Count;', ~,Oloraa.0. The 1P.V2st lr3 lon included a field <br />exa~_nation, a review of all available geologic and h;+drogeoloic litera- <br />ture and r.:aps, <br />CCICLUSiOi:S <br />1) Froposed underground mining at the PeacocY. Coal trine :ail_ have no effect <br />on '~aater +:ithin t ~ acuifers of the ;•:esa Verde GroaD nor on '.rater within <br />the Fray Gulch alluv_al valley fill. This incl'~des all surface and subsurface <br />• waters :~:ithin and a,;acent to the area of investigation. <br /> 2) The proposed r_~_ng area lies stratigraphicall~: above the aquifers of the <br />i•'esa Verde Group andvertically above the pi ezoretric surface of the I:a;l <br />Gulch drainage. <br />3) The raining area is brea¢h.ed b;- erosion both up and doY~n dip. <br />!+) Surface runoff through and from the mired area srili be treated in pro- <br />posed sedi-entatior. ponds to rrevent contarai~ation o: t:-:e i:a-r Gulch drain- <br />age. <br />5} Shales :rithin the lower i•:enefee Foray=tion sha'~ld oreven~ do+.•nward perco- <br />lation of :rater i7to underling acuifers. <br />5) ;, search of the r^.co:~ds of the Colorado Division of :rater %esources in- <br />dicates no crater wells updip (north) of the proposed rite area which mould <br />be affected by mining. .~dditiorall;•, the erosional breac}-. updip '.:ould r.re- <br />• vent any effect on adjacent wells. <br />(1) <br />