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06/211959 IE:09 215-295- a86 ALKALI DIVISION <br />~ •. <br />A <br />l <br />Mr. Clhuck willies <br />Page 3 <br />lane 20, 1999 <br />unsaturated mining sohttiam t0 migade above the tarBptcd milting mne> posss'bly <br />traclta,6 the egniter area. Siotply .~~^••••:ng tho preaeiare of the sllhog~, in tits <br />wcll mttmlus as ptopaaed oa pti®e 19 of the Dien Area Peanit won't provide <br />assvramoe that the bbmket la ptt+orrting mining Jloida from ntwing tlbetie the <br />ittjection uaterval. Other planned moauoriag activities (aorface motutmem <br />mwsumn+aata and time doattaln strHectoaaetty) won't provide trdd ucforcmmion tm <br />the lateral oooeachea of the cavity developmett may. it is tnv mtOrxReodiog <br />titer parts of the tatmatie®rnnLnn ttttt»tal 5actntes. These tacLtres tpeld make rt <br />diflscvri to meituain a gas 6lmdrea. Gives these o®taa>u tro botieve that speai6c <br />stgts should 6e inclsded in the UIC Ptvreu that ~ auQ7 vrhat wt71 dace if the <br />Wankel Jails to give ffie taatsde4 protectimr. Far eamttpie, haw will the <br />egotxivea>est of the blanFst be roonkated bcaida ."~•....w• the niaogea ptteteme as <br />the welt annatos7 Hatt will msomsimu be dcoeckd and taitigtood4 Hose wiD <br />solupoo tninigg be to the permitted rtwc if Wanketiag doean'l work io the <br />pnxlicted fashion? <br />b) Sut>sideme is of mnwra becatme v caold lead to an intarehamge of water <br />betwrrn aquifers err an mwwsien of mining tlvld taro the aqufas. T9e shape of the <br />bnal tavity as weft ere its ttiro will impact sctDtidmoa. The DteQ Aral Hermit says <br />ravity aim (a.a, dimolved volume) will lx wmpaud item amterlal baifteoa. <br />However, the atttderial balaoee doran't provide isdhemation abort the <br />shape of rbe cavity. if the mitdag sohxiaa gm fII eaou~gjt atgray tmerally, thm <br />two mining cavities coots connect togtthet and perhape Ntimately coalaa. That <br />would be +utdedirable Lecaase: 1) laydratttic mmmnuiagicon tvtteld ieevaee the t~ <br />err bydroftacturitts the lkamcuian in the oold. noa~opaatioerl catfity v4 high <br />ptrsvnte fluid faom the operating cavity, amt 2) taWeacamoe d cavities oouW <br />invalidate the staDsideooe mass 8etaoae wteddeecs typipll>< saws skrwly, <br />eurfmx toeasunmtems of subddeme tda momttamu tawrye might only indicate a <br />problan after dmaa=s b slmtdy durst Mveoa+d m~ far kr<ating cavities ate <br />available and aught to be evalmtod as pmt err the Fmtait canditiatts. The Draft <br />Staternem of 13atna in~wlea cal pages 2-4 the tht; fiY) trine d the ottitia will ba <br />deterorined by ocoammc ooaaiudmratitms, such m 'tivhm the value of eaesy input <br />eaaxdt the value d mining ttWpm." Wlq atto"l ravitammttM oawaeras alto <br />taken into aaooent in limitlag the cavity size, for emsmpie pttveetiatg eabsideaoe <br />.wyh~~ichNN.c~an be eatintstod from{(mathematiatt models for variwa rsvJky e>~imaJnti(a,.m~4 <br />, W aWt~ an pogo + that "... ~ Opti® wvlty stxo detetmmed YWY <br />cxpsitet>a gamed dtmag the ptoductioa Etna the &M few yams" imdicatet this b <br />stirs an eacperimewt prngtsm cod gives the imineesion Zhu tavittee might bo <br />pashas to failure to ddme tintitasiaoa althaogl thu ooaid endettgor the <br />evrironrneot. The Permit Wwald stipulate a maximum caviy aiu and attaaimt® <br />lateral dimmmtm. <br />7) The LTtftt Statement of 8aals tm page 2 spas '~vatei that is injected vr71 have <br />tempcatttma btiween 300 F sad appaotdtnately 4~ F (ot other oensperdtue bebw that <br />which the dnattuctive dlrtillatimn of ail shale may ttocar)..." Thin etuemetn iutpliea the <br />cavity wid be opermod sa a knr aumtgh t®paatwe oo pmvwl deetr»otioa of the oil shale. <br />The statettteat might moso 1 rnren deatrttWhe disti~alion wouldn't oacm in the <br />aw~dard laboratory rorort rem stss m the axae tea>peiatfae r tee cavity, t~awcve, the <br />sutnderd laborMory oast doesn't take i>na aec'anru the very long expomra time of the oil shale <br />in the raviry to the hot trtiniag <br />rH~c u.~ <br />