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<br />III IIIIIIIII IIII III
<br />999
<br />RULES AND REGULATIONS
<br />p:u:[rrnph. It is recognL.cd that the sla-
<br />buuy yrovidcd by n bench is not LndS~
<br />m:u:s stabdily but raLhcr tcmporn R'
<br />drainnKC and croslonal stability. Onc
<br />rnmntrntrr recnrn:nen[icd that culverts
<br />be nlluwr•1 tcmporn rtly for vNticular
<br />trafi:[. This commcM again points out
<br />that r`Dny pcnplC vlcu• terraces as a
<br />mrar•: of nrrrss rat.hrr than for tcmpo-
<br />rafy' Mnlr01 Of CrO51ml. $lIC'h mC:45ll rCS 1L5
<br />lice [t••c nC lrrt:nres to control drainage
<br />nrr 1'^:'uiLtrd n4rrn approt'Cdby the reF-
<br />ulaloly :rvl'wrl L:;.
<br />I5. A n':mbrr of rrrommcndations
<br />v'~•rr rrr^n'+1 to add a section that nd-
<br />d.~r•.--1 the bac6111inq and grading rc-
<br />quir~rcr•tL for Urrvinu'ly minrd•lantls.
<br />Thr- rntn:nrn~rr; supgcslcd that St1Ch a
<br />5^r 11 alt l5^[ ~ nPrCC^,ar}' CO address the
<br />pt•oblrm of yr:uling to approximate orir,-
<br />mai rnn'our u•hrn nmoh oC the Precious
<br />minis.^, rlrpu :it Mt ::pail and Nastcs on the
<br />rinwnfiupr and irsulTlr lent mntrrial is
<br />nt^: i!thlr- far grading. Commenters indt-
<br />cnt•sl that in such cases it would be dr-
<br />s~rnbh` to er,rourogc rcminlug of poorly
<br />n•rlnim~ rr awns sinrn LIIC run'rnt rrgu-
<br />Intlnr.s a^nu ld ensure nn Improvrmcnt of
<br />Inn'1 nunidt•, and nrrhaps water qualll5'
<br />seer and shore UtaL left by lhr, preelou
<br />minlnlt. Ataumrnts fee nn nddilimtnl src-
<br />L:nn ha:C mcrlt in view of nor of lhr• Pur
<br />Pocr7 aC the Art. to Promote the rrrimua
<br />lion of minrrl arras IC/t wiLhnut adequat
<br />rcr l:tmalion. T.lc rcgula (.inns have Bern
<br />rra isrd to rrfrert the rrail!p Utat sutfi-
<br />rmnt Spoil Or hrPSOd mny nM hC avallahir
<br />to nchlrvr poet mining condlLions w'hlrh
<br />uurt all it:r• Innd ronfigurntlon mtd co-
<br />ergrtatinn rrgnirrmcn4s. SaAt oprratlonc
<br />nrv• rr7air!vl to rrl.ain all overbuMrn attd
<br />•;rnnl m:ltrrinl ou Lhr bench and to Frady
<br />rn•`q'Irtrl? to eliminate the hie Menu nrd
<br />m.'n+I. tln n st•,ulr slope. ThC rntlre min-
<br />ter; Wren m;r;t br stabilized and rrvr-rr_.
<br />tatr•1. Thr provl•.ion has been added col
<br />47th 14rblrlt,
<br />If ticcrr:a rommentcrs segued Lh.tt.
<br />the Pronumd nmuntalntop removal pro-
<br />vi:inns u•ma[l pcrtnit midu'csirrn oprn-
<br />tions le) rcnlm•c nn entire rnal seam from
<br />n hill and not n•Lurn the Innd to the np-
<br />prul,~:nnlc nr4ilnsl con Lnn r. Such Changes
<br />to lncrl fern[ :old use, nrr nllou'rd may
<br />when the provlx~mL; of 6 515'rt of ihr
<br />Art are mil.. [n nncordanrc u'Ith the Arf.
<br />Lhr p.lrearn'h has been nmrndrd to indi-
<br />rnLr Lhut Lhr rxrrpllon 15 gn'rtt play ltt
<br />rntirs u•hrrc• crrt:dn Innd pl:uwinr, rr-
<br />quirrmc•nl': and stringent Vcrforntmu'1•
<br />s1.vuL•[rrls nrr met. It may bC nuthnrizrd
<br />in Ilrn of Lhr approximate original rou-
<br />toU r.
<br />17 C('!nla:'gt: tfrir` 1'Cr'rS l'rd In(hfRtlllg
<br />that. in tllp[I nl,a lnlnn rr111nCM1I ulN`rn dons
<br />Lhr slnpr•: irrr'c Loo rrstric[Ivr. Other
<br />rnmmr`nlor:: nbJrr•trJ that LhC stutlr
<br />safety L'trtnr of L.i tens mt ttncrtKnln
<br />ntr:c:urr nC n^4s; cLa b+litl'. •I7tc snfrty
<br />factor i:, mt appropriate mcnsurr. of uu[ss
<br />sL:Iblhly IhnL hn•: brrn steepled by Lhr
<br />Corn.; of P•.ngtuceec. MFSA, and other
<br />arrnrirs. (; rra lcr slopes may he used If
<br />the safely fm•lnr is nchiceed and rro-
<br />sional AtalJlht)' IS assured. Regulatory
<br />authorities utay specify hlKhCr snfet,V
<br />rnrlnrc ashen nrrre~a rv noel nrrmnrere
<br />u ill be respotvslble foi [irslgn and con-
<br />s--Z-rltction that Provides nu,rc stnbility.
<br />16. 14xlrtLCivC comments tndicaU`d con-
<br />cmn peer the apps rent rrslriclinn; on
<br />lnrgc imnoundmcnls in .715.14'cl. In
<br />cicu• oC Lhr, uumcrous eotumen's in Ln•or
<br />of such impou ndmcnls, lhr I)'7ln rtntc r'
<br />has taken guidnuce Crum the At L for rr-
<br />vicw u[ Proposals for impouudutruls noel
<br />pL•ICCd Lhr Innquni;c of : 51;,'h/ `er nl
<br />ChC Act in S 715.17 be aulsr, it inrnlrr:
<br />hydrologic criteria. Purlllrr refer^nrr 1.
<br />made Ln IarL:c impouurhr.r::ts both t^
<br />tl.i; sccLIDn mtd in 5 715.I:S of Li;l^ unrl.
<br />The rcei~cd Portion makes c Irar thlt t1
<br />will be nrrres;'r5' to ~n.dr nrc:~:: un'olvrd
<br />in such inttAunrluutnts Lo un appropri-
<br />ntC contour and th'tt all hirhe~•'IIs nt7 •1
<br />be elimimted. Section 715.1 :'ir iurlndc'.
<br />tt`Jrr qU^city nerd Olllcr rr',n•li'. Vr0
<br />snot be mil IL also n:•d'rs dr;l r, :'e a
<br />few cnmmen tees Uointcd not, lhnt rcid-
<br />funning anti Lustc-fortnin mafirn'!.
<br />c;mnoL br tnundaLed tg• e.atrrs in li:r r
<br />lrtpoundmculs wtlhnnt flr[ lna^I,rnd-
<br />cntly nu•clinl; the rrq'li rrmrut; (ar 1;^r-
<br />ial or nrul.raliznttun of to Graph Ij' u:
<br />chi. 'cc lion. I ~ - ~
<br />~ 1!I. nin!nClll':'rCCll'2C 011 LI to nrJpn.'•'
<br />for shall [Leper -..loos grnrr:~::y v:plr :~
<br />llu` c~nccnt that lhv one r~~bic ~al~l 1i4.-
<br />itatimt w'us peer;) rc.,u~i.t.t e. Shur :1
<br />pa raL'rgPh addrex:ing Pr nn:utrnt hn-
<br />Puundmrnta t; uow iurorpunttrd ir. 111••
<br />regulallons, the halt rrmuhts al:prnlu;-
<br />atc to dlslinr;uish brhercn surface ma-
<br />nipulations lhnt nuisL aiLh rca'rrr::,'1un
<br />and Crosion fonlrW by impour~ding ~nnll
<br />amounts of water in ronhnrrl mrs: and
<br />lhosa Ingro; ndwrnls that n•ay ad[rr~rlc
<br />n RecL tltc urea unrl v:hlNt nn' ~, ;hrn•lnrr
<br />1'0001 YC SpBCl,al cnnsclcrn ti ort by tar rrg-
<br />u!ntory authority, l7uutour furroa•1u'r.
<br />cnisr111 n{:, and of her norm:A ngrir'alu ..I
<br />ntc:hod.: oC nL.niPUkt!ing Lf.r surfm~c :rr
<br />PcnuiLtnl cvca i[ the bog luu•nr fu 'uu'
<br />rxce[•ds 1 cubic yard in size This:; lino
<br />i doc:~ not rnfrr Ln d^Prccsfons Ih t mar
<br />bl` rilllirrl by SUli.dd C11CC oC llltdr 8i'UUIUI
<br />mines. Subsirlrncr tvpj hr' ndrlr ~,ed ::'
<br />II the Pr rlnanrut, i[•I;uhl my Prnrrn t:.
<br />.. a'S! L'CT, c1l .o- tifiliLl d to ; ^ 1 S -
<br />I1ch-'ht dcnhnl; wilJl thin and lhic l;
<br />ot•crbu Men. A few cronment[•n surr.c..t ~'[i
<br />the uurd "Ln n:porC' b~ rirlrtrd Lo nvcud
<br />movruteut of material such n•. tlrst r•1r
<br />spoils back into LhC mlur, seen, Jr, is aP-
<br />pngrcluLr Lrt iudicntr LhnL nmlrti;ils mny
<br />have W be LrnnsnurLCd Lo nrhirvr bnrk-
<br />Illling and r•ttdinr,.
<br />Yl. Sou.^ r•mtcrrn tent expressed m•rr
<br />the d4;Llnrtion hcbvrrn Lhi,t nod Ihlrh
<br />overburden. C•t Pm'tic'.I I•[r, rcv:rivrr•s tvrr••
<br />eoncrnlyd that not Nl operations nu•r[-
<br />Ing the rrl term for lhlrk and Lhiu oerr-
<br />burcirn nrrtlyd n mudiflcnlirnt of Lhr rr-
<br />qulrcment to nchlCVe Chr npproxlmalr
<br />original contour. Thr rcKUla buns hove
<br />been revlscd Lo requlrc 1 hot whether Chh1
<br />or Lhlrk overburden condltlons rx11.t. oP-
<br />ernLlons must achieve npProxlmate urb:-
<br />hull contour whenever possible.
<br />2^. A number oC commentCrs htdir•alyd
<br />that Ute nnglc [. repose Ix not ahcny's
<br />stable. It is recognized that the average
<br />angle of repose of Catch material Is trot
<br />o,^•n n~ dn61n to ler„+. n1 ~~n~inn R1...~
<br />a m[:,Or cD
<br />n:nrir In r Lr.
<br />:uxl cru. Irn'
<br />inc." ha. hr •
<br />"grad;n•• nr ,
<br />l1tC Acl .1 1
<br />'SG Prrcrl',
<br />u'nll nlup~•,
<br />tl'a~ !'lq }th '
<br />Rrru: .tnrv
<br />97. .nllr (rl•
<br />:.tituh•••• u'
<br />11 .r' r.~l. .
<br />Stan` 'hr ' ,
<br />noel u•':'.:• 1
<br />u~r", tr h n
<br />t', n rr,r~: .
<br />Fu•..•'nrd 1 •
<br />non.. •'rt.i'
<br />a';1lr+nt~
<br />'1 \I'.
<br />rl• ,. ,
<br />r.ll' :~nr', r
<br />lhr ,,., ti.~•"
<br />in Cltl'. •~ r
<br />tail 1 r,. r.1
<br />D t.u`y a1 "
<br />l': n^lJ 1:.'I''
<br />dtlL•nu4' '
<br />a'•t •l :Li
<br />N'hh''t n' •.I
<br />I'r 111'fr'Grl1t
<br />u,.; ...,.,.It ,1,..
<br />~tnt .Iv.rl' ~:
<br />artha'1'; ,
<br />it itrl'r h' ~~
<br />iltr Pn•.I tt• n '
<br />f CCr IV`C11
<br />eahr• of :' i•
<br />n~lnrial 'h•
<br />Iutlul a. ,'-.~ .
<br />:dnn ., t•.
<br />n;...t;,. ..
<br />7'tpr. the n.•.
<br />rrPlr ne•, . .
<br />nee t:cr d '
<br />Ina:. 4r I>r :.
<br />rl,l rl^ ,1 1.•.
<br />.. .l,nl: to /:
<br />«rrd onfh •. '
<br />nLmr, ~Ir`..,',
<br />n'ay, trgl t., i
<br />23.: ref r:.:
<br />ihr trrnunr•'
<br />M ~ 715.11 r '
<br />trialrrtrnl h'
<br />city :hd nut
<br />lowed b~ h'n.'~
<br />modified W r.
<br />izc n•heu ue; ,
<br />ndeyuately In
<br />f'rthrr< inn n
<br />
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