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P-5 <br />as <br />CONCLUSION <br />Our mklusion is Nal the DEIS is insufficient and inwmpWe anal Wdltmnal uk-specific <br />studio are wmplelsrl and made avdlWle for pubbe wmmenl. The key area o/ ronttm are: <br />1. Inmfficient aik-speeifk subedeme ssudie udng Ilk mop advarked tachnolp-les <br />3. Imdequaze aquifer, gwundwakr, xeJl-flk arN tavern moniklin[ prognma <br />J. DFJS auusw Mivican Soda will violak iV lose wiN DOI <br />e. DEIS rot based w ilk nemurlly higher opendng kmpentumr and presuues <br />5. WdNUak and imuRdent disdosurt o! rnnrlfi performed 6y Amerian Soda <br />We also sre subsYndd other plan deficieskln which ue oWined H devil w the follownng <br />pogo. <br />EASLS OF CONCLUSION <br />Our opiniw an Ihir mazkr is bused w over pghry year of commertid acde aoNtioe mining <br />pptuince. AQdidwWy, our opidm if basil an the limited public reraM mWe available by <br />the Principals in Uk DEIS. <br />Cnmmenu on Drefi Envimmrknrd Impecs Sluemen[ <br />Yudsee Onlch Sodium Ninerds Pram <br />Amerimo Soda, L.L.Y. <br />P•5.1 Commmll Leek of5oppunleq Dela end Aoel)s4 Cuncerplpg Subsidsmer <br />The Drafl Emuomnenml Smpn<t S[memem \DEIS) ie incorrrylve and insufLciem so <br />support the Burrau of land Nwgemtnfs (BLhI) prefervd allanasive in Uas ro aim <br />specific and defmisis'e rtsurth er enalyais wy performed, cikd err prcsensed in the DEIS <br />supporting she sklemrnl nn page pS-2 (Geology) rhos, ".. subridence would range Irom I <br />l0 7 leer or leas, wish rro visible surface cook; end would wtur lowly aver geologic <br />iime." Wishous Ibis msevch in the DEIS, she ePPlicetien is incomplete wd furJkr Public <br />wmmens wi116c nerdrd adv silo irtfonnetiun is mWe oveJoble and the public hm <br />appoPnem amt b esuluma Ue dpk. <br />P-5.2 <br />Cammrnt 2 Trtaaghl Study Nel ApWlnble to Gmlep~ ere Yauktt Gpkh <br />Ankdcrn .qMe eskr the Tnmehi I%9 etudY to auppon of she UElS'a wneluaion rhos <br />subaiJence ofertuser Iban sluff (ev is unlikely. Tht gttlogin as W'indaor.Onwrsu unJ <br />Yanktc Gulch arc aubstsnlNlly diRercm and she Trereghi rsudv is not applicable [o <br />Yartkv GWch in prrdicung mbsitlerke The mayor diR<rcocu bersveen Ye~tt Gulch <br />end the Trtmghi study ere: <br />A. Iho h n(Drwsisa not Comsknble. AI the Wirsdsor sik, alt is evsmcted from <br />almurt pure Igers of halite bNdcd wish dolomitic loyen fmm o depth of <br />approximekly I ipp fvt. In centmt, the nehcolite peuenl n the YvJstt Gulch <br />site cstsb d naluks aril is diacmirekd Throughout the shale as a dtpth of 7,dOD <br />[tts. (DEIS, page :-5.) <br />B Aar of Lp•wi is S ~bst .i •Ilv iRertm The Windsor deposi6 an fmm she <br />Silurian age uhilr she YaNee Gulch formation+arc Tertiary in gnslrrgic aye. <br />C. The Y ^s I I S' ks I a L AI Windsor, the wlusitn <br />mmin- honwn is suTwated fiom ilk overlying aquifers by an impervious shde <br />la)'er- rbc O Slule. Thcrc is no impervious layer bmse<n Ne mined rune end the <br />asxrl)'ing oquifen aT Yanker Ouh~h. There(orc, anY Duid escaping from she <br />cm~mt n'ill not be confined to shpt strsm bra will be able so migrne upward mm <br />the osurl) my rtmtn pod aquifers. <br />D. Tlu Yankee Gulch Si[e Lacks a Dolomitic Lsrer Al the \Vindsor site, a <br />dplomilic layer at appmsisssakly 60g fees, known asthe Bass Islands Formation, <br />provides support for Ne pvcdying leyen. AsartsWT, surface subsiJerce is <br />minimized. The Y'enkee Ou1eh fomwtion las nn such layer, shercforc, ell else <br />being equal, Nve is p gmaler risk ofsubaidenee ere she 5'anker Gulch site. <br />Page 1 <br /> <br />L.~ <br />