ML20015A363

Attachment - NRC-2020-000076 - Appeal Response to NRC-2019-000132. (Part 13 of 29)

ML20015A363
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Issue date:	01/08/2020
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FOIA, NRC-2019-000132, NRC-2020-000076
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1 L l) HANIUM l U~A)

CORPORATION lru.lt*1wndt*nct* Plaza. Suite 9.50

• 1050 Seventet*nth Street

• Denver. CO 8026.5

• 303 628 i7UH ( 111ai11) * :30:3 :3/SU -4 I :2.'> 1fa, l August 28, 1998 Mr. Joseph Holonich U.S. Nuclear Regulatory Commission Uranium Recovery Branch Office of Nuclear Materials Safety & Safeguards Mail Stop T7 J9 Two White Flint Ncrth 11545 Rockville Pike Rockville, MD 20852-2738

Dear Mr. Holonich:

Attached are our responses to the July 17, 1998 request for information from the Nuclear Regulatory Commission on the Reclamation Plan for the White Mesa Mill. We have perfom1ed additional analyses and calculations in support of several of these responses. and hope that we have throughly responded to all the issues raised by the NRC. We also have incorporated in our responses the information and specifics discussed during our meeting of June 12, 1998. Many of the more complicated questions were discussed at that time. and we have developed our responses based on our best understanding of the technical issues and NRC's request, and in certain cases, where we felt it was appropriate, proposed alternatives.

If you have any questions, please feel free to contract me.

Very truly yours.

/ ' /.

Harold R. Roberts Executive Vice President HRR/pl Enclosures 9809080279 980828 PDR ADOCK 040086et B PDR r.r, . . .. . .

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1JtENRC fiu: Ci::Nlui

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I COHPORATION I lndt*1wn<lt*m*t* Plaza, Suite ij50

• 1050 St*vt*ntt-enth Street

• O<'nvn. CO 80:2rn * :3():3 fi:2k 77U,~ 1111,u11 ! * !OJ i",!J -~ 12.-, f.t, I Responses to NRC Letter Dated July 17, 1998 Request for Additional Information on the Reclamation Plan for the White Mesa I Uranium Mill Source Material License SUA-1358 I Docket No. 40-8681 I

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I August 28, 1998 I

I INTERNATIONAL URANIUM (USA)

I CORPOHATION lndepend, nee Pla:ta, Suitt' H.50

• I 050 ~*wventeenth Stre<'t

• Denn r. CO 802fi.5 * :30:3 fi:211 i7Uk ( 111ai11 \ :lOJ :3.\:, t 12.i 'f,t, 1 I August 2S. 1998 I

I Mr. Joseph J. Holonich, Branch Chief High Level Waste and Uranium Recovery Projects Branch Division of Waste Management I Office of Nuclear Regulatory Commission 2 White Flint North. Mail Stop T719 11545 Rockville Pike I Rockville, Maryland 20852 Re: White Mesa Uranium Mill I Response to NRC's Questions Dated July 17, 1998 Site Reclamatiori Plan I

Dear Mr. Holonich:

I The following is in response to comments from the Nuclear Regulatory Commission (NRC) regarding the White Mesa Uraniwn Mill Reclamation plan. Each conunent from the NRC (in italics) is frillowed by the response.

I Geotecbnical and Radon Barrier Design I I The proposed random Jill material requires addi1ional c:harac1a1:ation

/USA states that 1he random/ill malerial lo be used consists ulclay. silt, sand. und x,un:I I The material. which has been stockpiled onsilt?. contains isolated pockets of clay (( 'L r_ipe, and varying amounts of .wnJstone cobbles (from . ., j 10 300 millimeters {mm/ in \tZt:J ,,m/

boulders (larger than 300 mm in size) /l_.'.SA slates thu1 it muy 1creen out 1he cohhle~ ,111d I boulders prior to plac:inK the material on the disposal cell It n not clear from ll .\A \

response whaJ ii proposes as the maximum size vfpartides in random Jill lo be placeJ 1111he disposal cell.

I Ifpla,:ed in a disposal cell. a strongly heterogeneous random Jill ,*an signijicun1(v uffe,.:t the I performance of the radon barrier. making complex and difficull the estimation of differemial settle men/ and the potemia/ for rnver cracking.

Therefi1re. IC.\'A should !ipecify lhe maximum particle size of rundom Jill materwl ttJ he p/uced in the disposal cell Quality control (QC) procedures lO ensure the separatum o/

I I Mr. Joseph J. Holonich August 28, 1998 U.S. Nuclear Regulatory Commission I undesirable materials and lo ensun: material .,pectfications are met should he providi:d ll I stones and lar~e par/ides. such as boulders and cohhles. are used their potential e//eCls on d~lferential selllemellf. cover aackin){ polelllial. pref<,remial in/iltrntion patlmc~r.,. a11d the potential for cm*a erosion should he ,11w~r::ed a11d ducumi:nted I Response #I I Intemational Uranium ( USA I Corporation ("ll :sA*) suggests that l\\ o llC\\ terms. platform fill anJ frost barrier fill, be used to distinguish the random till placed din:dly u, er tailings tu ti inn .1 working platform from the random till placed above the clay layer to pro,*idc frost and shrink-s,,cll I protection.

Platform Fill I An initial lift of 3-4 feet of random till will be placed to form a stable working platform (platform fl!D over tailings for subsequent controlled I fill placement. This initial lift \\*ill be placed by pushing the material across the tailings in increments, slowly enough that the underlying tailings an:

displaced as little as possible. This initial lift cannot be comp:.ided through its entire thickness I because the underlying tailings will not support the weight and vibrations of compaction equipment.

We understand that this situation is well-known to the NRC from the other Title II sites (t'.g Homestake Grants. Qui vera ).

I The maximum particle size in the initial lift could he as large as the lilt thickness. lkcausc settlement originates in the tailings. not the cover. the maximum paniclc si1.e in the platform till ha:.

I no effect on settlement. Both differential and total settlement an: primarily functions of tailings compressibility. The effect of the platfrlrm fill is to provide normal stress to dri, e settlement. and the ditlcrence between unit weights of various materials randomly mixed in the platfom1 till \\ ill not I be large enough to produce meaningful differentials in nonnal -;tress.

The top surface (top 1.0 feet) of the platti.irm till will he compacted to 90" u maximum dr~ d1.:n:-;it:,

I per ASTM D 698. If large rock protrudes into this part of the platform till from lower rort11111s.

smaller fill material will be placed to bridge the protrusion before compaction.

I Examination of the platk>rm fill that has alread) been placed is the best Wa) to e,aluatt.: ih performance a'1d the validity of the foregoing response. IUSA has already placed a signitican' I amount of platform fill in Cell 2 and a portion of Cell 3. Through field observation the till has exhibited excellent stabilit) and should continue to perform as predicted above.

I I F IUSERS1STAff1RAH1RfCRES98 DOC I

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"' ,\ugust 28. J l)l)8 U.S. Nuclear Regulatory Commission I Frost Barrier Fill I Random fill placed above the clay cover (the ji-osl barrier.fill) will be placed in 12-inch lifts. \\ ith particle size limited to 8 inches, or 2/3 the uncompacted liH thickness. This maximum particle si/e I confom1s to standard earthwork practice. IUSA plans to prepare and apply this random till in frost-barrier cover construction as follO\vs:

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• Random fill borrow \. ill be excavated by loader or scraper from stockpiles and. if oversize material is found. it will be removed by whatever means is appropriate for the earthmoving equipment in use (e.g .. rock rake or grader hladc ).

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• The random fill material will be loadeJ into scrapers or trucks. hauled tu co\ er lrn.:ation:-..

and spread in lilts of not more than 12 inches uncompat.:ted thickness.

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• Oversize material will be stockpiled for possible use as riprap.

I Source verification QC procedures for frost-barrier borrow material will consist of:

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• Visual inspection of placed random till at each locati,1 of tield density testing.

• Particle size analyses (ASTM D 422) for all minus 3-inch material, mth 1>versi/c matenal I saved and weighed separately. One test per 5,000 cubic yards.

Visual inspection will include observation of particle sizes and manual measurement of orthogonal I dimcn'.;ions of any observed particle that appears to exceed eight inches in any one of the three dimensions. If the intermediate dimension exceeds eight inches, the particle wi II he removed from the lift.

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A QC res/ procedure and appropriale lest frequencies are required to en.rnre that onh <"/

and ( 'fl clays will be used/or co,*er cu11struc1io11 I .\'oil profiles provided hy JL'SA slum 1ha1 /en-a.\ o/ acap1uhle ope, o/ clay f( *1. t1nd ( I /1 t1rc overlain by days with undesirahle propertin (.\'( *. SM. and .\IL) /he tl11ck11nw., o/

I undesirable day layers have considerahle .,pul ial rarial ion These clays need I u he separo.edfrom the ac:n:pwhle dar !Jpe., lo ensure tha1 the radon harrier II ill Jul\'(' dnirahlc I radon conlainmenl properlies An ude41wlt' ()(

• p/un irith an acceplahle samplmg 1,rogrt1111 is neces.\W}' I<> ensure 1hat required IC'.\I.\ and any correcti\*e action are complelt'd 10 enrnre 1ha1 ac:ceplahle clay /)-1Jes are usedfor cowr comlruclion I

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I I Mr. Josc:ph J. Holonich August 28. I lJL>8 U.S. Nuclear Regulatory Commission I The test frequende.'i proposed hy !l 'SA are inadequate to ensure that only clays \\'Ith I desirable properties are used in thi.: radon harrier lh.: .\'R( * .\*raft Technicul l'millon 1111 testing and imp.:clion plans (.\'R( *. I YSYJ provides guideline., /or the /re,1ue11cin o/ {!<

• 1t* ,,,

deemed un:eptahle /or Ji.\posal cell construction I Response #2 I IUSA should clarify here that the term "'clay". as used in the 1996 Tili:m Environmental n:port. doc-"

not mean only soils classified as CL or CH according to the Unified Soil Classification System. In the report, that tenn was not intended to be limited so narrowly that it would exclude the use of other I clay-bearing soils, such as clayey sand (SC) and clayey gravel (GC). in the clay portion of the co\*er.

Experience with radon barriers elsewhere demonstrates that mixtures of clay and sand make good I cover soils and can have some advantages over clay-only covers. Clay-sand soil is easier to handk and moisture-condition. compacts more readily and tu higher densities than clay soil th:1t has link or no sand content, and is less susceptible to cracking. SC and GC soils also have hydrauliL*

I conductivities commonly in the I er" to I 0-* cm/sec range and diffusion coefficients in the I ff: to Io '

cm"/s range, both of which arc more than adequate for the required functions of the tailing cm er::.

I at the White Mesa site. Therefore. it would appear unnecessary to limit the clay layer soil tu Cl. and CH material only. and IUSA would propose that SC and GC soils should be included as acccptahk soils.

I The source verification QC program for clay-layer bomm material proposed bclo\\ is 1.:01bbll.'lll with that previously approved by the NRC fur Cell 4A cla) base construction. It will im:ludc I

• Soil classification - particle size analysis per ASTM D 422 and Atterberg limits per .-\Sl:\1 D 4318. one test for every 5,000 cubic yards (cy) of excavated borrow soi I.

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• Maximum density and optimum moisture content per ASTM D 698, one test ti.lr C\er~

I 0,000 cy of borrowed soil.

I We note that the radon flux emanating from the existing interim cover (platfon11 till). consisting of random fill, already satisfies the 20 pCi/m 2/s limit. One foot of "clay .. cover (cla) la:erl plus l\\ll I feet of random fill ( frost barrier) \viii provide additional attenuation in excess of that aln:ad~

achievl.*d, as documented in Appendix B of the 1996 Titan report. fhcrefore. the conservatism 11, I the design substantially redu~es the dependence of cover pcrfonnancc on the QC program. allm, mg IUSA to employ testing frequencies somewhat less than those in NRCs guidam:t:. we hclie\c arc strictly applicable only to situations where the design satisfies onl: the minimum n:4uiremcnh I IUSA understands that clay borrow from the Section 16 source has not been used pre\iousl~ 111 construction on the site. In order to provide additional confidence that the Section 16 soil.... \\ ill I F 1USERSISTAFF\RAHIRECRES98 UOC I

I Mr. Joseph J. Holonich  :\llt!U:--1 ~8. I l}l)X U.S. Nuclear Regulatory Commission I satisfy the requirements for the clay layer. llJSA \viii commit to an initial source ,i.:ritication testing I program as follows:

The first 50 classification samples will be collected across the candidate borrow suil I horizons at a frequency of one sample per 1.000 cy. This represents ahout 20 °1i1 of thl' total borrow volume from Section 16. After the first 50 soil classifications are performed on the clay borrow source. testing frequency will be reduced hi one test for each 5.000 L') 111 I borrow if the results of the first 50 classifications arc CIL CL SC. or (iC. ll iSA will nntil~

NRC of its findings before implementing this change.

I 3. The test hole locations used lo eslimate rhe propertie.\ o/ mill tailings and cun*r t11£lleriuh should hi! identified. The standards and procedun:s used to deh*rm11H: th(' nwll'nal properties also should he ,\J}e<.:(/ied I fl 'SA should provide a map(s) showing the loculions u/ the h'SI holes from H'hich tailmg, and cover material dwraclerization samples in"re ohwined The lonuions to he ide1111/inl I should include those samples descrihed in Appendix A of the reclamation plu11 t.llld 111 Alluchmem A o/ /l.'.'-,'A 's Decemher I 6. I <;<r response. I{ 'SA also should ,pen/\ tht.'

I Response #3 standard\* and procedures used to assess the material properries.

I !USA is including a copy of"Cell 4 Design-Tailings Management System. Appendix 13"" (prl'\*iously submitted to NRC in 1988) as Attachment I. This document contains a compilation of the drill hole I logs. test pit logs, soil classification data and a map showing the location of the pits and drill holes located on the White Mesa Mill site. This data has been used to charactt:rizc the soils usl'd 111 the construction of the cell dike and to classify the material that has been stockpiled for use in the C(1\cr I construction. Some of the data included in this Appendix was used and included (( 'hen J l>78. ( 'hen 1979 and Dames and Moore 1978) in the Titan. Tailing Co,er Design. Whitt: ;\1csa \till I IO Wi) 111 Appendices A and G, without map. Additional data on soils stockpiled for later use and used in dikL*

I construction can be found in the Construction Reports suhmittcd to N RC for Cdls I -I & 2 ( \'1..m.:h I. 1982), Cell 3 (March 4. 1983). and Ccll 4A ( 1990). Soil classification data. test pit lrn:atiun:-- .ind drill hole locations for the clay borrow site located in Section 16 \\ere included ,,. ith the **J L'ltcr I Report Section 16Clay Material Test Data. [)'Appolonia. March 8, 198.T. provided as Attadrn1ent I to IUSA 's comments dated December 16. 1997. Sample UT-I ,v,L" ohtained in I9CJ6 b) Titan anJ I included in Appendix A to the Cover Design and was taken out of lest Pit~ (TP-2) sh11\\ll on I* 1gurc I in the D'Appolonia Section 16 Report. The map is included here as Attachment 2 I There are no drill holes in the tailing. Any samples taken for classification purpose-. of thi: tail111g are taken by hand shovel excavation.

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Mr. Joseph J. Holonich August 28. I 998 U.S. Nuclear Regulatory Commission Sample Composite (2.3. & 5) \.Vith radiologiral results from Rogers & Associates Engint:erinl!

Corporation. shown in Appendix A ofTitan*s (\l\.'t:r Design is a composite :,ample of grah sampk-.,

from random fill stockpiles RF-2. RF-] and RF-5 as shown on the map in Attachment I tn thc'>l' comments. Site I and Site 4 '.lmpks arc from Clay stockpile C-1 and Random fill stockpile RI*--+

as shown on the map in Attachment I to thl..!sc comments. All of these samples were taken frum shallow pits (<5 feet deep) excavated in these stockpiles.

-I. Tests usinx multiple samples should he used lo quantijy adequately and LIL*count for *c intrinsic: mriation of material properties in /USA~,* analyses.

The intrinsic \'ariahilily <ilhe material properlie.,* should he characleri:ecl hy conducting measurements o/'eac:h properly using se\'eral samples. Such a process appear., not h,: hul'e heen ju/lowed For example, lhe Auerherx Umits tests. S1c111darJ Proctor lest. u11d permeability test were carried out using only one sample (UT-I}. Jforeover. the location from which this sample was obtained has not heen proi*ided 5,'imilarly. supporting infiJrmariun conceming the samples used for determining the material properties emplo_ri:d in the slope stahilily anal_rses is missing also Jforeorer. lhe hydraulically-placed tailing.,

show sign~/icant heterogeneily that mus/ he taken inlo account in se/llemenl mwly.H*.,

!USA should conducl and doc:umem test.,* usinx multiple samples lo ade,1uately e.Himat,: the imrinsic mnation of material JJrO/h'rties. including the heterogeneity of the tt11/ing properties (see A'R( *. /'J 7 8J. The location o/ .\*ample l'T-1 should he .\peci/ied usu di a, thl' addiliona! samples used/u!' detamming the parameters (or the slope stahilit_i t11wh .H*.,

Technical jus1~/in11ion should he proruled tu support the contention that the materwl property \'alues used in the slope stah1/it_r anufy., es are appropnate and acceptah/_1 cun.\/Jt:r

!he intrinsic: mriahilily REFEREJ\'CE .\'R(

• April I ')~8. "Lahoralory lnvestigafium of Soil., /in* Engi11ea111g Analysis and Dexign o/1\'udear Pm,*er Plants. "Regulatmy Ciuide I I JN Response #4 We understand from this comment that the !\:RC appears to he concerned ahout tht: stahilit: of tht:

impoundment dikes. The stability of the dikes. which were designed to contain li4uid ( hydrostatic stress at maximum pond level>. was addressed in the mill permit application and Lil:ensc Amendments approved by NRC in 1979. 1982. and I 990.

This comment also appears to question the database for characterization of bomm soils tu he us~J in construction. Although the cover design document contained data only on a samplt: for l 'l-1.

substantial infonnation has been developed on the Section 16 borrow source and from test drilling by Chen and Associates and Dames and Moore suhmittcd prc\*iously to the \iRC. A field and r \USERS\S r AHIRAH\RECRES9B [}{)(:

Mr. Joseph J. Holonich  :\ugust 28. I lJlJ8 U.S. Nuclear Regulatory Commission laboratory investigation of the borrn-..v area in Section 16 was performed by !)'Appolonia in 1982.

and the report of that study wa"i submitted to the USNRC most recently on December 16. I997. The investigation included 6 test borings and 3 test pits located as shown on Figure I of that n:port.

Sample UT-I was taken from the !)'Appolonia test pits (TP-2) as shown on Figure I - Attach1m:nt 2 to this submittal.

Technical justification of the material property values used in the slope stability anal) sis is bascJ on both the results of soil testing conducted previou~.I) and on consernlli n: proccdun:s used tu quantify the input parameters for the stability modd. Specifically:

• Earthfill and Dike - This is random fill that consists mostly of mixed-grain soils and cubbles up to 8-inch size. This material is variable. ranging from sandy soils (SC. S\1) to cla) soils (CL CH) \vith enough larger particles to possibly lie GP to (j(' in places. l'he input parameters used for this material are conservative for slope stability analysis. because /.Cru cohesion and a friction angle of 30 degrees arc used. Zero cohesion is conservatin: because the testing by Chen and Associates and others show the random till material has a substantial minus-200 fraction and san1plcs typically have kl\\ to moderate plasticity. These propcrtic~

would justify a classification of the tines as CL-Ml. to Cl and some coht.*s1on \alue het\\c1.*11 zero and 1000 psf ( ref: NA VFAC DM-7. Table 9-1 ). tv1atcrials plai.:cd to 9_51',o maximum Jr~

density typically have an angle of internal rr* _*tion of 31-34 degn:cs (NA VFA(

• DM-7. I :.ihlc 9-1) and, along potential failure surfaces. a secant friction angle of over 40 degrees (Terz.aghi, Peck, and Mesri; 1996. hg 19.4). The intrinsic variability of the random till will fall in a range that is accounted for by the relatively low strength parameters used in the analysis.

• Foundation - Drill logs show that the foundation soils arc locally-derived allm*ium and we: : -ed bedrock (sandstone with so111c claystone) i.:onsisting of SM to ivtL soils \\ith son1 . i and CL. This material is the source fr>r most of the random fill and. then:fon:. ha~

similar properties except that both the unit weight and the friction angh: an: slightl) less to account for the diftercncc in compaction. the latter b.:-ing w1compactcd hut undisturbed. rhc same justification for conservatism provided above applies to the foundation soi I.

• Bedrock - It is more accurate to characterize intact rock strength in terms of u11wnfi11cJ compressive strength and fractured rock in terms of shearing resistance along fracture surfaces. but for inclusion in a soil slope stability model the parameters of cohesion and friction angle arc used. Typical values of ,.;ompressivc strength for weathered. porous sandstone are above 5.000 psi. or 72000(1 psf f Kry nine and Judd. l'n11ciple., of F11gmeeri11g Geology and (jeotechnics. 1957). For ruck unda IO feet of cover. this translates intu ,111 equivalent of cohesion of 720.000 psf with 1:ero friction angle or cohesion of 718.000 psi with a friction angle of 60 degrees. In fractured hedrock the cohesion portion of strength may be lost but the secant friction angle. which includes components for dilation resistance F IUSERSISTAFFIRAHIRECRES"8 DOC

I Mr. foseph J. Holonich August 28. 1998 U.S. Nuclear Regulatory Commission I and resistance lo pushing of grains. remains and \\Puld likl.'I~ he .it least -t5-,o dq;n:l'" In I any case. the paramekrs for hcdrod used in the analysis an: cxlrt*n11:I~ L'Olbcn all\ L' and show that no part of a failure surfm:e would pass through the hedrm:k.

I It is clear that the intrinsic ,ariability of the foregoing properties \\ill foll in a sdected values provide a conservative limit.

ntl1t,!.t..' t, r \\h11..:h the I Concerning the issue of tailing heterogelll'ity. the: comment appears to he asking for spe(ili(

exploration and test data on physical propcrtics of tailings. Such data arc not available and colkct1011 of such data is in our opinion infeasible. I lydraulically placed tailings in act in* or recently ~tet1, l' I impoundments an~ mostly saturated. soft or e.1sily li4uelied. and have ,cry hm strength.

Consequently. they are unahle to support the static v.eight and \ ihrations imposed hy drilling and sampling equipment In circumstances where sampling has been attempted from strw.:tures within I the impoundments that can support equipment ( e.g .. Homestake Grants sand-fill dikes). the sampks were disturbed and not demonstrably representative of the tailings. Tht:rc:forc. while ll :sA agrl'l':--.

I that multiple samples and threc-dimc:nsional characterization of tailings ma~ be an ideal objccti\l'.

it would not appc:ar to he a technically feasible objecti,c.

I An alternative. ll :sA suggests the follov.rng approach tn.

• Observe (monilllr) settlc:mcnts. Scttlcml'nts rdkct the cumulati\e cfli.Th 11!' 1ail1111-'.

I \'ariability. The cumulati,e effects. rathl'r than the ,ariat1ons themsl'hl's .*irl' \\hJt is more critical to reclamation and long-term cover perli.>rm;.mce.

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• Use empirical data from other Title II tailing impoundments that haH: alrcad~ hl'L'll reclaimed to predict tailings behavior. Reclaimed impoundments \\ith similar tailing thicknesses and tailing placement methods might pro,idc data that ,,ould support I better prediction of settlement. liquefactiorr.. c:tc. than standard soil-engineering 11:sts performed on disturbed. perhap.., non-reprcsentati\'C samples from the White \ksa impoundments.

I For the reasons listed abo,e. ILJSA bclien.*s that it would be unproductivi: Ill conduct tests ,111 I samples taken from the White Mesa tailing slurry or impoundments. J'he mill has. and will in the future. handle ores from many different mines and host rock formations. fo date thl' mil I ha:--.

processed ores from over 130 individual mines located in Utah. Colorado and Ari/tma. lhcrl'forl'.

I the tailings will vary in percent fines. mineralogical composition. and particle shape. all of wtm:h atlect the properties and behavior of the deposited tailings. The alternative approach proposed ahu, l' is especially appropriate for the White Mesa Mill. which. in contrast to most litk II sik:-i. is ..Kli\l'.

I and will remain so for several dccades. For sites that arc inm:ti,*e and in thl' procc:.:--. uf rcdamatio11.

predictive calculations may be necessary. but, at White Mesa. fl lS:\ has the time and upportunit:,

to conduct observation of real hehavior. diminating the need fr>r predictiH.* cakula1iu11 ....

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I Mr. Joseph J. Holonich August 28. I l)98 U.S. Nuclear Regulatory Commission I 5 Technical support is rl!quiredfor lhe conr,:ntion thar the slope s1ahili1y anafni., is I consen*a1ive.

711e sketch of !he cross sec/ion /iJr Dam So . ./ provided with Allad1men1 J of !l *.\". 1 *,

I Decemher 16. /<)<r re.\pon.H'. slum.,* rhe top of !he heJrock 10 he in/erredjrom horelwk log.,

(uhich were not provided with the reclamation plan) !his hedruck .,ur/ace is dowr tu the foe of /he slope than the hypolht!lical .rnr/ac1: used in !he slope stahi/i1y lll'lll(l .\I., /l .\. I I ju.w(lies !his im:onsistenty hy slating 1lw1 lhe analysis presen1eJ 1ri1h a hedrock rnr/aC<'

lower rlum adual ll'ould he consen*a/i\*e A ledmical rationale i.\ re,1wred for tlw sw1ement.

I Assessmellls conductl!d hy 1he SR<* sla/1 .rnggnt 1/rur rhe acrual mode of far/ure ma_\ he ,11111c d({ferent from !he dn:ular failure surface a.,.,umed h_1 /l *s.-1 111 rhe h_1po1he//t'L1/ l*u.,l' I presellled in the redam{l[ion plan (a plot of the critica/faihm: .rnr/i.1n* uas not proridcd 11 itlr the reclamation plan). The assessments suggest rhat the critic:u/failure *,urface may 1101 he I circular and a portion cf rhe failure sur/ace may he houndt!d hy th<! ht!drock sur/aff

( *onse,1uenr(r. the /t1ilure of the slope may he determined hy thl! cohesion and/i*1ction o/ the interface hetween the fimndation mataial t.md the hedroc:k.

I There/iJre. /l/,\A should rnnduct and dornment in the reclamation pllln an appropriate \llllt' olanafrses to de/ermine the e//ecls of hedrock dose to 1he toe o/ 1he slope ..\Jh.:ci/icalh 1111/r I re.\pect lo the moJe of failure In uJdition. the appropriatl!ness of rhe assutn/Jfwn u/ <1 circular failure pmfile should he demonsrra1ed I In ifs analyses. ll SA also .\houlJ

• im*e.,*tiKah* and ww(\':e ,,,her polenlial failure modes min~ orher unafnr., mdhud, g I

I('

the wed>,!L method f l,amhi: and Wlutman. /'J-()(J

• addn:.,s 1he putemiul /or ll!nsile crack formal ion and rf srgnificanr anafr:e 1he 110\\thfr I effect on water in/iltralron and on rhc illlegru1 lllld /1111crio11 u/ the con,,.

I

• mea.rnre (in iJ1e lahorarm:i*J or e.\l t111£1f £' I haseJ 011 cl\'arlahlc puhl r,heJ 111/ormut 111111 t lie propertil!s of thl! hl!drock imerface /:'.,1imu1ed rnlUL'.\ ,lrould he /11.\tr/i,:d and u sensitirity 1.mafni., slwu/J he condu,N,l 10 dl!monstrate !he comen*ati\'t'lll'\S u/ rhc I assumed ralues.

• include the eftc:c1., of potellfial sl!i.,micily al the silt' (u lwn:onta/ ground acceleratw1111/

I U I 2g) in the slope stahility ana(r.,i.,.

I F iUSERSISTAfflAAH\Rf:U*l ~!;8 DOC I

I Mr. Joseph J. Holonid1 Augu::.t ~8. ( lJ98 U.S. Nudear Regulatory Commission I

• indicate the measured location of the phrcatic surface and. if appropriate. ac1:llllllt for the I

• cffocts of this surface in the slope stahility analysis: and assess the potential impacts from carth4uake-i11Juced pore pressures.

I REFERElV( 'E. Lamhe. f W. ,me.IR. 1* Whitman. "So,/ .\fedwnic.,. SI 1*a.,1011. .. Seu York. NY John Wiley and Som. I er')

I Response #5 I IUSA suggests that the NRC please review the Cell 4 Design which was submitted to the :--;Kl*

February 8, I 989 with n:visions submitted January I 0. I 990. In this document a complete stabilit~

analysis was presented and accepted for the stability of the slope of the Cell 4 Dam. !"he embankment I stability analysis is addressed in section 3.4 of the design dnl'.ument that induJt:s anal~ sis fpr hoth static and seismic loading at t\\O embankment sections. Th1.* stahilit~ anal~ sis assunwJ that the tailings were saturated and wt:re completely fluid. It also asswrn.:d that tht: lrnt:r had compktel~

I failed and that the steady state seepage condition had been reached. It \\as hased on thest: cu11Jit1tllh that the statement concerning the conservatism of the analysis was made. Cell 4/\ \\as appron:d tu I operate as designed and constructed by Am1:ndment 20 to the Soun.:c Materials I .i1:cnse Sl :\-1,~8 on March I. 1990.

I In the White Mesa Mill Reclamation Plan submitted February 28. 1997. the Plan calls for the: Cell 4A dike to be breached. In view of this. \W assume that analysis of the continued stability ol tht:

dike after reclamation would not add to the Plan.

I 6. lncvnsistendes heiueenfixure.'i and horelwfr lo~s should he re.,ulved '"that/he pw1111111 olthe hedrock surface can he identified I There appears to he incomistency a11wng the figures in Appendix ( i and lht' horclwle lug, from ( 'hen & :1.,*.wciate., gfren in that appendix lritlwut a di.,cu.Hion of 1hc hor<<:/10/e lug, I und thefigure.,. it is 1101 possihle to Jetermint' how !he po.,aion of !he hedrnck ,ur/ace 11a, inferredfrom the horehole logs. For e:wmple. Figw*e I u/ Appendix (i shou., 1ha1 the hedrock rnrfa,*e 11as enc01m1ered in 1110 horeholes <'hen #}9 and ( 'hen u-- J'hc horeho/c I log, prm*ided in .-lppt*ndix (j do ,wt inc/uc/1: lhe.\t' lwrelw/e., // !hew 11111 horelwle, hLluni.:

lo the series of lzule.,* .,hmrn in Figure J f Bl I-! j through Bl /-_1 81 then thl..' hureholl*, 1/(lllil d I ('hen#]') and ('hen#.., .. cannot in/ersed th<' howu/(11:r u/ ('ell-I // 1hese h"ln helnng 10 rh, series of horehole log, giwn in Appendix (i tl/ofr I through llofr .. 51. tht'n 111/ur111ur1111/

ahout horehole ( 'hen #..., .. is missing I A /so. the surface e lernl ion coll/our.\ gi n:11 in Figure J do 1101 match I he hur,.:'lwil.' lug, prt>l'ided For example. according to the contour.,* in the figure. the collar efrration o/ 1111-I F IIJSERSISlAfFIRAHll<ECRES98 DOC I

I Mr. Joseph J. Holonich August ~X. I l>lJX U.S. Nuclear Regulatory Commission I 2./ should he hetwel!n 55~0 leel and 5580/eel 1/011*('\'er. w*cording tu 1/ie hurelw!e /11g, I Bll-2./ is het11'l'en 56UI and 5601) /eel Therejore. JCS-I should resofre thl! i11c"11s1s1en<.'ie1 tlmong 1he figure., and the hurl'holt' /11g, I and proride the missing information Response #6 I The im.:onsistency of dri II hole data comes from an rnwmplete data set bcmg pro\ 1dcd l>n 11 huk*...,

designated with a BH are hoks drilled by Dames and Moore while the hoks drilled by Chen anJ I Associates have no prefix. The attached copy of Appendix B from the Cell 4 design submitted lo the NRC in August of 1988 (Attachment I) provides a better explanation of drill hole series. locations.

elevations and drill logs. The map included with this attachment provides an owrall vie\, of the sill.'

I that better explains the locations of the various drill hole series. with corresi)onding collar elevations.

I Concerning the specific example pointed out in the this comment. the collar dcvatitHl inJiL'i.tkd h:,

the map contours ( before the ,over stockpiles v.t:rc: placed, for the Chen series hole 24 1s hcl\\ecn 5600 and 5610 \vhich corresponds with thl' drill log collar elevation l1f 5609. Dnll lwk Bl 1-24 I (Dames & Moore drill hole 24) has a map t.:ollar devation hetwecn 5570 and 5580. with thL* Jrill log indicating a collar elevation of 557'3. The contusion comes from having l\\.o series of drill hoks \\Ith similar numbering systems and only having a pict:e of the map without thc lcgcnd. Thc attached I infi.lfmation should clariti thc earlier 1.:onfusion

[he proposed /requent*ies o/ {!l

• te.\/., for comrollinx the 1.111aliry o/ the cnm1ructiu11 o/ thl*

I final disposal cell ,hould ht' modified

/he :\'R(

• 5,iu/1 li:chnical Pwt1w11 rSJP, on tnt111g and 1mpec11011 111,m., r \ /<(

• J */\ii, I provides :,:uidc:linn /or the /rt:quenue, o/ {_)(

• h*,1., dc1:111ed acnptohle h.1 the ,hi/I /or di.vw.ml n:ll t*onstr11c:1w11 Jl SA 1., proposing the perform thne {_)(

• tnt, ii irh /n*111101L IL

si~nifkant~\ less 1ha11 those recommended m the SIP I The ohjl'dil*e of the rernmmC'ndC'd /rec1uencies /or the diffaem tests i., to l'/1.\llrc tliur I ac:c:eptah/e ,:ons1ructiun qualify of the: disposal cells can he achiewd giren the importance lo puhlic health and sa/ely anJ required long IUt!. as spc:d/ied in IO ( 'f R Part ./0. .*lppt*ndi.\

A. ( 'riterion fJtiJ lhl! /requenc:ie., o/ le.,tin~ rl!('omnlt'nded hy the YR<* \fa// are con.\l,h'lll I with slandard inJw11:i practin* reg. rhe l * ,i..; /Jepartment., of the .*lrm.1 .\'an und. Ji, Force. the r* .\" Bureau o/ Reclamation J and hare heen adoplt'd hl lin*nwe, ur utlra CMTR< "A Title II sites I While the .\'R(

• staff n*,*ogni=n that con,1rue1w11 mdhodulogtl'., and mataiul h',1111g frequencies .,hould re/lat ,ite-.,peci/ic condifi()/1.\ //u: 'i!U/1 cm1.,1den it mapproprwre at !hi\

staKe in the reclamation prou:.,, to comm it lo I lu* propo.H*d tn.*,1111.* nci,.:, uh., e 111 ,ht ual I ~ \USERSIS TAf f IRAHIRl CRE $96 DOC I

I Mr. Joseph J. Holunich August 28. I 9l)X l !.S. Nuclear Regulatory Commission I constmction datu. /here/ore. the staff rl',JUests that fl *.\'.*1 modifr it., {_)(*plan to n1t*e1 fhc I recommendations in the SIP On,*e /(.'SA can demons/rate win}!. uclual comtrudion duta thal acapluhle £/lllllity can he achit!\'t!d with {)(' tests less fre,1uent than thosl.! sprci/il'd in the .\'JP. the te.\/inK, fi*e,1uencies and associated surezr asse.,smoll can he modified I appn1priati:/_l*.

Response #7 I I'he NRCs refcn:nced STP \\as Jcveluped for redamation of I itlt.* I sites. and .i-. such "'

acknowledged to he very cons1:n ati n:. cspeciall~ for Titk II site:-.. In I l)88 speu fo.:allon-. \\ l'fl' I approved by the NRC ftlr construction of the Cdl -+A dikes and clay hasc I he()(' requirement-. in those specifications are. for cmhankment (dike) construction:

I

• Field density and moisture - one kst per 1.000 cuhic yards (cy) and p1.:r liti til till I

• Particle-size analysis and Atterherg limits - one per 5.000 cy Standard Prrn.:tnr tests - one per I 0.000 cy I anJ for the day base:

I

• Field dcnsit) and moisture - one test per 500 cubic yards (cy) and per Iitt ol ti 11

• Particle-size analysis and Atterberg limits - one per 5.000 cy I

• Standard Proctor ti:sts - one per I 0.000 cy I IUSA belic\'es that NRCs desire for a demonstration of ac.:ceptahk 4uality hy ac.:tual n1nstruct111n data has already been satisfied hy its appnnal of hoth the constrw.:11011 ()(

• pro\ 1s1111i-. and tll\:

construction results of Cd) .+:\. ll :sA will he using the sanu: hom1\\ mati:rial 111 the platliinn Iii!

I and frost harrier fill that was used in tht* 41\ dike construction therefore. ll 'SA \\ould a-.k that th1~

experience and the success that rnme he considered tu enable ll ;SA to propose as altcrnatt..*

I requirements the QC plan proposed here in. More frequent tests. particularly the StandarJ Proctor test. would be necessary t<.ir low \'olume structural tills. hut less important \\here the till matt-rial" come from relatively homogenous stock pi lcs and a large , olume of material is placed Jaily I llJSA proposes that testing of till materials and in-place density and moisture will he performed hy a qualified materials testing service contracted hy ll :SA or hy I l :sA staff trained for these duti1.*:-..

I In line with the reasoning pnwided above. ll 1SA proposes the follo\\ing ()l testing program li.ir tl11.*

tailing covers:

I F \USERSISTAfFIRAfl\RECRE.S96 DOC I

I Mr. Joseph J. I lolonid1 August 28. I t)tJ8 U.S. Nuclear Regulatory Commission I a. Partidc-si1.c analysis - Urll' lest hy .-\S 1\1 \kthnd I) -L::2 1110 h! ~lwmd,.:r ,111;11\ ""'

I will he run hut samples \,ill he \\ashed P\er a 1;2011 SIL'\L'i f1ir each ~.ooo L:

h. Atterhcrg Limits - Not kss than one lest per 5.00U c:!

I C In-place density and moisture of compacted Iii I - ( >ne test per 500 cuhK ! arJ . . Pl da:-

layer and one test per 1.000 q or platform fill ( tup one foot only) and fru:-.t barriL*r I fill. using the nudcar dl*nsity gauge according to ASTM D 2922. with moisture dctem1ined per ASTf\*1 D JOI 7. The SamJ Cone mL*thod. ASTM D 1556. will he used to check density measurements at the rate of one Sand Cone test fr,r e\ cry IO nuclear I density h:sts.

d. Moisture-density standard - Standan.l Proctor density ti:st using :\Sl\1 [) ()t)8. anJ I ASTM Methods D 2216 or () -l(14J fr>r moistun: content will be pi:rformed at a frequency of one test pcr I 0.000 cubic ~ ards of 1111 plu.ccd.

I Each field density test will be plotted on an earth\,orl-- control grid and rl'corJcJ on tc . . t data shL'eh that become part of the permanent record of the pro.1cc1 I J .-lddirional in/urmu/ion and unu/r.\l, ure 11et*e.,,an lo uddre" rhe po1t*1111u/ /o,- , 01*t'I crack.in)!. due 10 luJlll'/ac1w11 I The tailings propi'rlie., 1nd1u11e tlwt the mutl'nal ha., the p11t1*11111il for l11111efuct111n und 111 in Decemher J6 I yy- re.,J}(Jll.\t.' /{ S.-l uck11011/edge., 1hn f)(>fl.'flf1ul !he /)(>fo1//ul /11r I li1JW!/a<:/ion musr he a.,ses.,ed to demons/rule thar any re.wiring damage u 011/d he mmu,- u11d would not uwse con'r damage I Therefore. fl 'SA should n*alua/e the potentia//or lique/aclion al sewral locutiom u 1th111 thl' impoundmenr in orda lo proride wlequarl.' arrul cu,*crage !his erahwtwn should he hwt*d on lahoruton and/(,,. /il.'ld tc.,1., and 11ore 11res.rnre mea.,uri.:ment.,. i/ nen,,,*an .\frthud, I med/or interpreting tnl data and u.,,eHmg li4ue/uC1io11 potennul ,hould he cumr,tnll 11 rt/,

cwn'J1/ practicl.' i11 geotcchnicul eng111eeri11g 1.\el'd and ldn.,, J ,r I <111d I 98_1 .\n*d I ')9.;1 I As u minimum. polenflallr li£111e/it1hlc :one., ,hould he identified ha,ed 011 111de., pro11a11n and gradalion lest result., /or the llltLXimwn credihfr c.:urth,111akc u, H'\\t'd in lp/1t'lld1.r <i 11/

I thl! reclamation plan // the t!Xlt.'fll of polenfla/11 II,1ue/iahfr :onn i, loud or 11111101 tlil t://ects 011 .,rahi/in wrnming :eru mufl'nul strenglh ,hu1dd he U\hL'd and 1hc l ,11 l°I integrily should he demumtratt.*d /1011 en'r 1/ !ht: putell/td /or lt,/llt'fucl/11!! I\ u,.,n ,.*d 111 I he signi/icanf ft' g. inrol\'lng the elllirt' i11111111111dmem und or the t*mhunkment.1 m11tgu1111n n11:as11res or redcsig11 o/ 1he rw/111g., 11111ub uni.I 11r tht.* onhw1kme1111 1/:011/d he 111u1111,.'t/

I F \UStRSISTAfF-.RAtNU.CF<ES91l DOC I

I Mr. Joseph J. Holonich U.S. Nuclear Regulatory Commission I REFERE}/( 'ES. Serd. fl H and Idriss. I. Al. I 'FI. .,l Simplified procedure/or 1:'mluating I Soil Liquef,u:tion Potelllial. "AS( 'E Journal o/ the .\'oil Medwnics and Foundations />h*i.,11J11 AS( 'E. 1'ol Y~. Xo. SM(), pp. I ]./9-/ ]~./

Seed. II. 11. and Idriss. l .\I. I V8l. 'tirouml .\lotions and Soil l.i£Jllt{ac1io11 /)11ri11g I Earthquakr "f,'arth,1uakl.' Fngineering Research /nstit11te. Fngtnl.'ering .\lonogm/Jh 1*01 5 Seed R.H. /')()./, lntroductwn lo h*aluatwn o/ l'otelllwl IitJUe/acfion llu::unl . ld1'l111u, I in Earth,1uake Engineering Pructii.:e. "Workshop u/ the l *nhn*.,ay u/ < *uli/ornw ot lh'rkeln May 31-.fune ./. 1')')-J I Response #8 IUSA recognizes that the saturated sand and non-plastic tines portions of tht: tailings ha\ t: the I potential for li4uefaction. Jlo\ve\*er. the :'JR( **s request fi,r 4w.mtitatiw assessment nf liquefaclJ(ln potential and resulting co\ er damage carries\\ ith it the assumption that*

I

• The tailings can he characterized spatially and physically 1..'tHlugh tn 4uantil) liquefaction potential. and I

• The structural response of the cover rnn he also characterized wdl enough h11th spatially and physically to quantify damage. if .my. resulting from liqudaction.

I In IUSA's responses ahm*e fl} pre\ious questions. it \\as stated that the tailings Ill their pre:-.ent and near-future state are \cry difficult. if pos-'ihk at all. to drill anJ sampk sutfo.:irntly tn dt:\L'l(lp :1 I three-dimensional model of the tailings on \\hich quanlltat,, e analyses depend :\or Gm u11J1-;turhl*d samples be obtained on which tests can be performed tu lllL'asLm: thL* parameter~ u1t1l ;1! It*

quantification of liquefaction potential (cg. density and v.ater wntcnt) With ~my nplPLtllllll I method that penetrates the tailings. there is a risk ot also penetrating the liner system. thi:rch>

compromising containment of the tailings solution ll 'SA is cun1.:erm:d that It is JHH prad1cdhk t1, obtain the quantitati\e results sought hy thL* ~ R( al this time I A qualitative assessment l>f li1.1uefaction can he mad\.:'. based nn ,dull is knu\,n ah,,ut thL* Pre". 111-:

mill grind. and the method oi* hydraulic pla1.:emcnt or tailings. :\s statl'd ahovc. ttK* 111111 ha-,

I processed ore from many diffcn.:nt mines and on: hodies. so tht' chcm1str~ and di.I~ uilllL'lll Pl till*

tailings will vary spatially and nonuniformly through tht rmpoundmcnt:-.. lht' tatl111p \\l'l'L' I deposited by discharging l(mard the center uf the ponds from points along tht.* d1h*-. I ail 111g -.1 ll 1d-..

settled out of the slurry from c,>arscr to liner fractions a\\ay from the dischargL* p,,mb. n:~ulting 111 concentration of slimes in the middle of t:a<.:h pond. Ne\crthclcss. m detail there will he co1i:,;1dl:'rahk I variation in this pattern due to the development of deltas and back v,akr a1 .'as hd\\L'en dclt.i ....

movement of discharge points over time, and variations 111 grain-size distrihutions and da;, lral:11uth in the slurry. The variations in any horizon can he understood hl',t by examination t1 1 at:nal phot11" I ~ 1USERSIS r Aff1RAH1Pf.Cfff S'l8 O(Jf I

I Mr. Joseph J. Holonid1 - I~- \ llt'. ll"I _' X I 11'/X U.S. Nuclear Regulat(lry ( 'onmi1ssion I llf the ponds, which show the ati.H ernl'nt1011cd katun:s I hrough ..m) \ en,cal 'il'l'llun tht.* p1 ind" \\ JI I I have intertingering lenses of tailing sands and sliml's. makin~ till' difkn:nltalion ut pl1 1 "ll ,ti properties both intricate and gradational. In sumnia.ry, ll 'SA bd il'\ es that a 4 uant1 lat1 \ 1.* a:-.,ey,;r111..*11t would require so many assumptions and gt>nerali/aiions that tht* results v,ould 1H1t he ued1hk I Overall. the tailings arc dassitied as S(

• to SM material they contam some plasl!Ut). a pmpnt, that resists liquefaction. Fines with some plasticity an: prohahl) L la) s.. md tht.:se part id~*" .irl' 11111"1 I likdy to he conl'.cntratcd in the n:ntcr nf thl' ponds. I hesc tines art* I) pie all;, thl' Jll()Sl l*11mprc..*:,,:-,1hk portions of the tailings. so sellkments ran he t*:-..pl'clcd tu hl' greatest (I\ er the i..:l'nt1:r:,, Pl tilt*

impoundments. The tailings arc probahl) sandit*r (SP to SM l and freer uf plastic li111..* . . du"c.,t tP th1..*

I discharge points along the dikes: w11scqucntl;,. li4ucfad1on potential 1:-. likdy tu he greater 111..*ai tlw edges of the impoundments than in the middk. Although. as tl11.* pond:,, hq:111 111 fill ttll..' d1..,d1.11~1..

points are mon:J closer 10 the centl'r areas v.hil'h lurtl11..*r L"untnhutt*:-. tP, ,m.ihilit: 11f tl1l' u111t<1111cd I tailings.

I Fmpirirnl data and engineering anal)Sl':-, (I .-\rangn. ltJlJn. \\be:111tu1..k ',1..alrng I ,td,*r" !Pr 'w1I I .i4uefactw11 L \ ,.luations. a ./tJurrht! u/ <;eofl.*t hmcal l.111!.lflt'1'rlfl't.!.. '\11, I 1>1>h. \ttad11111..*11t : 1 -,1111\\

that tailings will not ltqucf1 umh:r ,;t * -;11111.. l11adrn~ ln1111 c..*\cnh ha, 111g c1 rna!!111tud1* 1>1 -t *,.:, , ,, k -.-.

I al the site Figun:s I h-1. and I ti--4 uf the.* Rt_*clama11un Plan "h11\, th:11 tht*re ha\ 1.* hccll n11 h h!, *r11.

l'\CillS ufthis magnitudt* 1Ailh111 !OO mtle:-- of lhl' :,1!1: Should" "c1.,1111c 1.'.\l'.lll L11~1.* 1..'lll*ui,!h t,) \.dU>L liquefaction ol'.cur atier th,: l'P\ers are 111 placl'. the -;aturalL'd "and .irnl r1,111-pla:-.t1l li111..**, pPrt111111.f I the tailings v.-uuld ht* .:xpcl*h..:J tu liqudi and rnumn1taril\ lose.* ..111 ,,,trl..'n~th 1111..* Llllti..:dl !.1lt111, tk11 would rontrol the damagt* to the 1:0, t.'f an:

I *  !'he :-.patial Jistrihution of impoundmcnt areas).

litjlH:fal..'tH>ll (variahilit, tn l14uditct111n ,,,er till*

I flit: i:Plllatnmcnt of thl* liqudinl t.ii!rng-., pro\ 1dc..'1.l t)\ th,: 1.:11, l'I I ,1htl11 \ , if hcn.J \\ llhout crad, ng 1 1.1 ,, 1.:1 t<,

I I

• Ille.* am(lunt uf lateral d,..,pLt1..,.*111c..*111 lttjUCial:tllHl 1d t,111111~> lllllkt tltv LP\ 1:r ,llll11i..: ,111,J ,tit.. 1 I It is ltkcl~ that liqudacllon \-.di t1Pl ht..* urnh1rn1 h1..*1.,Hhl* th1,.* t.11l1n~ .... 11\* lli*l t111ll11nr, ( ;1:11n1Lu r1111i plastic rnatl'rial \\ould liqud, hu1 pLbtll. tatl1ng" \\uuid !ht! It thL* ,:\i.**..,-, p1,rv p1v~,,11v- i.1,1 !.. ,:_

c..*nough tan >11dctcnn111atc t11m:.1 l1qudi,*d *,and" *.11uld I,,* d1,pl.11..L"1..I b1. 11 1 \\ ... tlL'll&'lh pl.1.--.11, 1i1,c, tl1.11 I sht:ar and lllt1\l' illlu liqw.:tkd /Olll- \\he11 till'\ hht Litc1<1I u,11llllt'llll'111 I he d1*,pL1u:d ,,nid .\, ,1i! . !

tlov, into spal:c \ acatt:d h~ the plasl!l 1111"'" I hi" p101..c..*", \\ oul...l cunt lnLK' 11111\ ,h I, ,i 1.; .1, tlit , , , , "

pore pressures remain: l'Xc,*ss r<1r1: prt*.,,:un:-, \\DUld pruhahh hl' rl'11c..*,l'd !1r-.t 11ca1 tht* d1kL*. \\l1u.

I I

I Mr. Joseph J. Holonid1 -I 6-  :\ugust .:.8. I 1N~

l. 1 ~. Nuclear Regulator~ Commission I pore li4uid rnn migrate mto the 11,mli4ul'fo:d pla1lurm till. 11r 1hrnt1gh oarks 111 th1..* 1..11\cl \\ hl'lhl'1 I the process continues to this point d1...*pcnd..., on ho\\ \\1.."ll tht 1.:11\t:r conta111s tht* liqu1..*li~:J tad111~" 1 ,*

ho" flexible and strong tht* c,>vcr 1,; and t1<1\\ rnud1 unsaturull'J tmlin~s cx1st o\ er satura11:d tat!1nw, fhesc factors will changl' o\cr ll!lll'. imprn\

• 1g as the tailmgs Jc\\;th.'r (ttm>ugh 1:\apur<1tlllll c111d I l*apillaril)) and l'Onsolidatc.

fl 1SA rccogni1cs that tatltng llq11efol'.lion is pn,s1hk as h1ng a.s sunil' portuin ul lh1: llt>ll pl.1..,111_

I tailings n.*main saturated lhc irnpoundmcnt d1!-.,:-. (cmhani..rrn.'nhl ,m* umstnKtcd 11! til!llp,tckd random till and an: 1101 saturatl',l. thcrcfon:. tht* d1ki:" an.* 11111 susl*t.:ptihh.: h ltqud~tl..!11111 I h1.: . . ~* d1h*,

\\.ere designed tu tont.ai n Iiquid i lul I h) Jn isr.attr pn* ... sun* i s1, 1l1L*~ \\ ti I ,.* If ita In ~ t1111pl1.:1i.:h ltq ud 1vd I tailings fl SA 1s unaware a 1...:d1111t:all~ dt:k1i;1hk -;olut1on h* thl' hqudatllPn poh.:n11al I

1lf It is unportant to nok that t:Vt'll a k\\ random narb m thl' cu\t:r \\.Puld 1101 h1..* l'\.p1..:\ h,d ti; sigrntkantl~ rcdm.:e the w,cr ",.:ftcrti\l'ncss in rt.*tarding radon tlux :\u*ordmg tu th:lll,ulalon 'nt1d(*

I l64. page J. l'ra\.'.h mu ... 1 h\.' at kast .2 un \\idt.*. must ht: -.,p:iu.:d k*'i:-. 1ha11 I !it ;1part .rnd mu ,1

~netralt' at least 7-i 0 o ,it the CP\l'r th1d<11t:",s 11, t.:i.tus1..' thl' raJt1n tlu.x to douhk* lhh :~u:n ..trw h extreme!) unlikt:h . g1H:t1 th1..* \artahtllt\ 111 l1qu1.:hKt11111 ,m1cnt1al incr rlw tnt.11 .111..*,1-, ut 11,v p1111d, I . tdti1110na/ 111/un>1t1f/1.1// 1111./ iltlOf\ \/\ Ult flt'I n \,In /ti {/le, ,if< 11/11{/lli/ n/ fiu 1f>t11/Ui , i11 idlir'li I o/ wllfrment ,md .1111 ;11:ft'nfl!1I /ur ( ,11 cl , ti/( Amg d111 tu //n, d1//t1 l m1t1/ 111!/1 1;1t ;11 u1h*ulul10n rt:£/Wrn t'\lff1ldl!on o/ tht ,1,ffiem1'nl 11/ ntf'l()U'I !11t 11tiwn t1111ro,1,ic ,11111.!1 urea/ nn*1.*rax(* \/11r.*01*t*r due tu the lit'lo Pgn1e//1 of tl/1* 111d1t1.1:;, m,1h'n1il, 11 ,1*!!/em,

/Iii,

,;w;t, iii I imah 1i, Iha! t11k1.*, mt11 Ul(h,pen,ahl,, 1111/n d1111mg

I( 1 owlf 1//c 1111 u,k*(/IILl/1*

'{>t1{1u/

,u!li ldl"lt1hi11n me,11 mum11111n,'..?

of th, n;.tft'liii/ 1110;1, 1 1wogru111 f!t, I 111 generul momtormg ,1i111011, tJf/)ll1"ltJ/ 11>Jlt/llUJ!/\

111 mu11wno11,

( tli/\1'1/110/1/\ t/11 t un*

1/11/h/l/rll/

11111 p/u, nl L{Ulckh ,*nuu.i:h 10 1,, ut,I iii,

,1/ l/tn, /II 1ilJ / 1t'l 4 ('/1/ ! o;nu/1./,i{fl!li,;,

ICJ(Ji Jrom /idd meuqonno1111lo11( he, om,*1 t*,11 ,/1/fi111/1 1111ho11t ,11111/i.;i: ,01.1/1,,

I /or eslimalm;.t. .,elllon-.,,11 Ht1h l11u1//11t! )';.', 1/i, p11111m, fr; 111/ 1;n lhert.'/m*t, lo /,n11*1,le 1111 ,1eln-1w.11, ""'.ii, ,1\t'ftig,* /I , I ,h1111/d, ,1u;1111, th, ,111/, m, t1l ,Iii, I lo wl/-Wt'(t,,;IU and the l //I/ill Iii. !tut/ ii/ th, t i!lt'f' ti/ )l'lt't"d/ /111 Ulli!I/\ nu*,( 1"1/lflhlf, I d11111/;/

h,, ha.\t'd un the kn11Hn 11r mc,1,11n*d dn1nh1;i/wi u/ m11101u/, r, ,1..: -.a11d d1111t, ,II ,,1, I; I locatwn und /uh11ru1on -1n,*11HuTd um,ul1d,11wn 11onunt10 1,t/111*, \di/, mi:nt ,fo ,u!,i h,

,:akulait:d 111 each 1t*ttlunen1 pl,uform und momtu1mg Hdi ,md 1/ n,:n,,,an 11or. 111t ,11,rt mt'a.,urcm,*m, ~hould h,* r>runded to um/inn (Jfl 11('U t'fll, on,,>l1d1//111n iulu1*1 I

,, If .\"A ,IIH1 ,hould 1 11h ulah !ht nwxim1m1 ,'1//u, r111ui ,.-1110111111 " ' ' , ,111,1/1 .i, ,/ 111, tiw d,1i ,*01er dtlt' tu thr dil/e11'11/1i1/ H'fflrm1'll/ /11,1dtlu1,111 ;I,, , ,11,uhillf1 ,1/ Iii.

11, <lili, ,1, fi1 " / ' ' " ' ,I I

I Mr Joseph ..I. Holontd1 17 *\ugu ... 1 .'X. I lJlJX 11.s Nudenr ~cgul.alor~ ( *rnnm1ssion I da~ tu u11h,11md tht' H'll/t'm,*1111lra11111Jflw111 deiclu11mg t1,11 b 1/,011/tl ht* do11/11111,i11<d I /'hese ane,.Hnt'nfa c1re 11,1rticularh 1mporlunt t om,denn;:. that 1he 11rn1111wd ti11cknt', 1 ,;/ tit, da~ corer ts thm (one fool/ H hen t ompared lo tht* \lundi1rd 11rt1U1n* m geoft*c/11111 ul en}(ineering f flem1ell and A1mhrell ,' <)9 / 1 I J, ma/I~ wJdmwwl H'lllono,t that mm 11c1 111 w u 1,*111/1 11/ the I p/wne I huns.:1 u.l t11ii111i.:,

durmK a 11..*Hm11 n*e111 ftTeJ/ lfl tht* ahH'll< e u/ 11 lii111efad1011 H e11t11101 1hu11/d h1 u/1'1,io 1 ,/

I Ill a,.,e., ,mg the 1ettlemn11 of th,* dt.\po.111/ t*dl curer Rtfl~.!li::Stf Henna N I> and A1mhrel/. I f, I <NI /fr, onm1c:nda1tom 111 1!1e \ Rt fu, I Soil ( *m*er \\ \/em, <ho I rumum \fill I ,11/mg, und I 011 / t'l't'/ Rad1uu('fn t' II tl\lt,

( 'on,trUd/011 \/t'fhr1d1 /Pl \e11lmg l't*nelfu{l//f/.\ l!l \utl ( U\'tn " \ ( RF(i t /< '-Ji' I 11/ /

I ux l'\plallh lh,tl I II '-\,\ "n.:'ipnnst.* ttt

,md h: ...11ng 1,f ta1l111g" prnpt'l11L'S ti'"

i.:11lillllL'.nl t:, 1111! h.-.1:-.1hk tatllll!,! d1a1alft*n1,1l111n b11,,:J 11n drdhni; -,uiq*lif!l:

\\ 1tlhn11 tl1h '>f1,1l1:.1lh d1"llt1hu1,.*d ...1uc111t1fa.1t11111 ,if 11h, 1,,d 0111 fH1-..,1hk l111w1torn1 llh',m111tf.lt1l 1,dru!ai1e111-- 11! hltal ,;\:ttlrn11. '11h ,llhl dt1L.:1,*nt1cil I '"*t1kn1cnt"i I \\.'111! .1 l,1rgr numt)\.'I "I \Wnpk*, l*uuld ht. ,1hta111l.,I tht\ v,uuld 1'l:pr1.*,c111 .i '-'I\ ,01.111 flt.'l'i.'l.'lit,l~t* of !ht* !Dtal tailing.-.. h.:J\ 1ng all\ .mah *,l- -.tdl ,kpt.*11de111 1111 ii *,uh-.;t.1111, *! ,1111, *11111 "I t'.tllltn<:t.:mit,1, 1uJgt*m~111 Stttkmcnf 111 tht* ,P\d ,.an r1.:.,ull tr,11;1 I

I

( ,Hi:.ol1Jauun \lltdd ,,rn,c.: *,,:llkrncni I,,. rt*du,. 111g pnr11-.,!l\ ,111d 111 t11111 die \<1!urn, ,.d 1,1tl111,t;.'." It I 1-. Juuhttul th.ii 1,al, ult11!111h ,it ,dli1.*rn;.:n1 thlll!-' ,tandard ,1*1holidat11111 tlh:11n i I 1.t/-tl}lt1 d .11 l *lW,1

,,ould prudtKf lll<.'d.lllHflul il'"td!. i ,1ku!.1!!11Jb tbllti,! ,. un,,n!id,lltt 1 tlwur\ 11:q1111f ,1u;m1tl1,,1t1\l1!

I ul I

• H,n.1nda1, i.h,ll!Hll~:

1.,*11d1111in, ,d ,',11. ti ,,,qnpn. **"1hlt i,ht't \\IH:!ih*1 th,*\ ,if(' ,11 11,* 111,t 11\*1 I \,ilut: ... t1111/i.:~11IH>,tf p1up1.T!if*,,,f,d!

urmpn:*,,1,t1l rndt.'\

i,11,,*1** ,.k1hl!, ,ind \1*il.i h1!1,, 1.,,1111 ,.,*Hk1il I

I I

I Mr Joseph l Holonid1 - IX- .\ugust ~8. I lJ 1>8 I I S Nudcar Regulalllf) { 'n111n11ssion I

• l\:rrnl:'ahilll) n:maith umstant during u111solidati\lll I * \'n1d rat1n "" dlc\.'11\l' slfLi:- fL'lllallb a llllL',.tr rdatH1nsh1p m1.kpl'ndL'11t \llt1111c I i\t the Whitt: lvksa mill ~,Ill' 11 1:- nut poss1hk al th,.., lllllL' tn 4u,111t11 1 thl' llL'1.t:ssar~ paralllL'h.:r-,. and the 11c(cssai) assumplion.., Illa) 11111 ht: \ al1d. 1n part hL'1.*aus1.* the pararm:tcr-. ran not he dL*p1.:ndahl~

qwmtilicd hu1hcrmorl'. ()n:" hci11g prul1.'s,,,1.:d 1111\, and 1n thL' futurl' are u1n1111g frurn 111-111~ ,J1lkrc111 I Slllm.:cs \\1th \\H.lcl~ ,~tr\lfl~ prnpt:rli1.*.., "l' Luling..., pn1pcrl1l'.., 111,i~ ,,ir, .t(u1rd111~h altcrna11,c. ur1.kr-11l-mag11itud1.: l:s1m1atl'-, ul tu11sl1l1,lat1(1n ,111d -.tttk111t.:11t h,i-.1.,l 1111 ,nlu1111.:t111.

\,., .111 1.:mnpn..>ss1hilit) and t*mpm1..al data fr11m -;m11lar silt'" can ht* Ill.ilk, hut th,:sl' t,a, 1.: , n; !11111kd I hcncftt altcrnalt\t'. It 'SA pr11J1(ist*s that scttknK*nt 1.:\aluat.ion hascd Pll '>1.:ltlcmcnt mornlnnng,:.; n1orl' I As an

tppropnak' for tht' Whitt' \h:sa tailings than cxploratwn and tcstmg follo"'1cd b), rnlrnlat11>11s Settlement data collected tu Jat( ari: shnwn m Attachrrn.*nt 4. A1.Mitional scttlt*mcnt monuments\\ ill I he installcJ on a regular grid. tllu:matcd 111 ** ig.un.: l of '\tta~hmt*nt -l. and mcasun*d on a schl'duk that . .-.ill pro\ ,de data lo l'\ aluall' s1.*ttkmt*111 rates ,md patterns hom th1:se data. i.:slllnatcs rn11 h1.*

made nl the amount ,>I :-;dtlcmt:nt IP he 1.:\p1.'i.'tcd and tl1t* tltllt' until 1>0°" 111 prrlll,tf\ :-.t.*ttklllL'lll h I ,tdHt.'\t.'J lt 1s apparent thdt \et1k1rn:nt !lhllJUllh:nh 1.*a11 he 1nstalkd 0111:, 'Ahl'n !:!rnunJ 1:ond111011" ,11111\\ 1 1:

I when tht: tailing '>lH'lan* '" ,,;tahk t.:nPu~h lo :-.upport n1t11 a.1J 1.:qu1p11H:nt nt:t*lkd h,r 1111111tttnL*111 Ublatfa11on 1111\H.'\l'I. 1h1~ 111111.: \\ill clfrl\i; hdor1.* thl' 1111w \\hcii :.1 Jnll111l:' rig 1.an ~ 11p1..'l'Jll*d .tl till

....,mh: plat:1..*. so 'il'ltk1m:m Jal.i 1.,.111 IX' rolkrtl'i.l "illPIK'f than ... arnpk-, ldll he colll'1.:h:d fpf l.1horJt('f\

I lliltng

.lhc n.:lat1,i.:* ment ul I I \ \ . . pwp11,.,cd apprnad1 ,.111 hl* undcrst1111d tn1rn th\.' 1:\pc11\.'111.~* ,d I H,nHt:stak,: \'h11mg ( ompam i 11\1<

• 1 ,tt ,1..., I ir . lllh mill ,lk III p1nl1L1111!:-' ,.md lllPlllt11n11!,c .,,:nk111vr11 111 l't:spoil:'ll.' [ti a 1\'tjllt'S! frrnn till' \o;f,({ H\1( tlhf,lllh.:d -.a,npk-; 1°! !adtni:!"' ln1111 the 1dd li!lddl\~*

\llll't' l 1J6.:.11a1hnw, pile lk-.p1k an 1..:,pl'rtcnu:d dn!l1.*1. good 1.*4wpml'11t. .111d *u11d1,1111h,.:,l I ,;ampJmg proc1:Jun.:">. th~* ,;,m1pk*-. \\l'rt' rkarh d1"ll1rh1.:d Sltmt:s \\trc.: lL'slt'd llir ro11-.11!1d.1t1P11 pammt.*tt:*r,. ,mJ tht: n.*s,ulh \\1.'fl' input Iii .1 cakulat1011 using nm:-.olidatiun thc11r\ I l1c111.,1kuL1!h111

'I prcd1dcd hllal pr1111,tr) sdtkmt*nt ol ; ..i kcl tor ;i tall111g sl11m: c;1.*c111111 ,thou! XO 11.:d 1h1d 011~1.* tht* larM,t' tailmg 1mpou11drm:11l \.Hl:-. rn.111Houn:d a11d ll1t* .. lr11 *:-. C\1\1.:r.:d t'UilllJ:.!.h tu '>llP\h11t I \.\11r~crs. 5.~ morntor points \\l'rt.' rnstalkd 011 ,1 n.:g.ular \00\ H)(>.foot griJ patll:rn 1,.*11,cnng ,lll ,H\',1 1150 ft"Cl h\ 1.2:'iO fo1..*L 11r ,thout lJO a.:rt.**, Sdth. *111c111 readings \\._*-re tll.td1.. 111111alh .11 kast i ,d1.c 1'dl ii wt..'ck. then about ..:\,'!'\ }O Ja\*, C 1.mwlatt\cl' ,12ttk*n1l'llb \\n,* plPl!l'd c1nd ,m.1hivJ !.ll i,,ul I :,;t:Hlt*111rnl rah: ,If scllh.:mi.*nr .mJ 1..han):.!1..- 111 ull' 1 d -.dll1.:lllt'III I >mini,: thv , 11uhv \II tl1l ,,l' measun.:tH~nh, .mnth1..1 cakubl!un \\,t-. p1..*1 !urnh.:d IH pn:,fo.. t ~ ...*tth.:1r11..*nt b.tM.:d , ,n ti....*,,! n:"'ulh , Ii

'iliunplt~s taken trnm d drill huk 1111 tlw largt* m1pound1111:nt Sample.'> lrurn till'> hnk ,\l.*n: .tlw, k.1d, I

,I

I Mr. Joseph J. Holonich August 28. I 998 l l .S. Nuclear Regulatory ( 'ommissiun I disturbed, and showed intcrbcdded slimes anJ tailing sand. The calc.:ulatcd total scttkrnenl. usrng

/I test result~ and consolidation theory, was about three feet. A separate calculation using , olumctric compressibility predicted that with worst-case assumptions the total primary st:ttlcmt'nt could he as much as eleven feet. The actual settlement measured at the nearest monument \\as more than thn.:e I feet after less than om: year and was over five feet after two years.

This example shows that methods of geotechnirnl engineering devdopcd for natural soils are 1101 I necessarily appropriate for tailings. and tha 1 the alternative observational approach pwposed h~

H fSA. relying on settkmcnt measurements rather than predictive cah.:ulations. produces silt'-:~peci tic an<l useful data that can ht.* used in decis1011-mak1t1g hy hoth NRC and ll 'S:\.

I White Mesa has decades to operate. making tht..* ohsarntional approach all the mon: appropriate.

therefore. IUSA proposes to address NRC's concern.s ahout settkment using lhc oh-.eT\ al1llnal I approach. H I SA \\ ill install additional scttkrnent nwnumcnts. as sho\\ 11 un I ig urc I u f .:\ lladmlL'lll

4. extending its existing array. O\Cr hoth tailing ponds as fast a-. grnunJ <.:unJitiuns \\ ill alh1\\ s.1k I access to and Wllfk at each pu111t. lhe existing nwnuments \\ ill contmue to hL* rnunitrnt:d. \\ ith st'ltkmcms plottt..:'J against real time :v1onuments installed in th..: t'utun:' \viii conform tl1 tht..* d..:-.1g11 shown on the a<.:<.:ompany in:;! drawing. l'he rnorntonng record v.ill include data 111d1catmg till*

I location. thickness and date of platform till placed as interim co, er during mill operali(1r1s I >urnig and atter reclamation. the monuments will he nwnitored on a regular st..:heJuk. to Ix hast..:J llll observed settlenuml rates, until 90°11 ot pnmary consolidation has hcen arh1c,t..:'d. as 111d11.:ated h~ the I time-settlement curve he(oming asy mplotic. AltcrnatiH*ly. the end of settlement monitunng ma) he determined h} thc annuali1cd rate ot settlement. based on the an:rag.c 1if the Ii\ c most reL'enl settlement readings. bcuiming kss than JtJo ulthc total -.L*ttlcmenl We also note that it is nol nc<.:cssar) to kno\\ the 1.ern puinl. or start ut settlenH.*nt. tor thl' prnp,1sed approad1 to he used he<.:ausc it docs 11ot dcpcnd on fixing the initial point 1.if a scltkn1cnt cur\ c.

whid1 is virtually intpossihlc to measure tor tailings. lhe shape and asy mptolc of the L'Uf\ L' an: llSl.'d lo nalw.tlt' settlement progress. and these t1re dctcrmmahk through the 1:uurse ut' ,l'ttk*lllL'lll nH:usurcmcnts attcr monumcnh arc 111stallt:d 10 .1dduio1111/ in/nrmul/1111 uddrn \/Ilg lhl dt'fi!!I, 11/ d1\11u,11/ cdl l omlt'llc lltJII ,//011/d h1*

fJl'OVldl'.f

/)t'fail., o/ df\110,ul I di t 11wll'/Hfw11 tlfl' 1/t'll' \\(//'\ tu ,1111/JO/'l .\ IN , dl'futl1*d ,m11i1 ,n ,1(

II .\', I , JWO/>osed reclwnt1t11111 plum and \/ll't'II nllflltll1* I he 1m1wnw11 f't't/111r,*d 111/01111u11on mdude, m,*thmb, pru(edurt'.,. and rn1wn*m1.*nr, /111 ex, urultng hau/mg ,111ck1>tlillg u11ii pltu ing i*onlamm,ll<'d t1nu nwH*onhm11t1111ed m,11er1ul, and other 1/npo.,,d ct'II 111a/t'11c1/1

!he prnn'.lurn fur moh'l'lltl 11/ou'lfll'III und c110l/hld1011 ,/11,uld he udetJU<1/1' lo ,1cl11c1 c th1*

dt .11irt*d nwts/llrt' comem plan*mem den.HI.I and />t'nneuhilm 1

( .w of acnprahfr pron dure., su('h 11., 1he recummendalwm prtn*ided in \'l RF< i'< R-50-1 I I I kmi.:n cl 11/

1

Mr. Joseph J. Holonit:h August 28. I tJ98 U.S. Nuclear Regulatory Commission

/ ')8 ~, .fi>r grudalion. place me Ill. and compact ion neo.:.\swy I<> achic\'I.: design dramage ruin and volume.\. lo pre,*011 intanal am ion or piping. and to allou /ur c, ,/ fret ion and remo ,*al o/liquids should he con/inm:d ( 'ompaction .,peci/ications .,lumld inchule rntrict11>11., 1111 1rnrk related lo atfrer.w weather condllions reg. rain/all. /ree::ing condillum. c:lc, /'/um.

v,ed/icatium. and n*,,uirement., /ur ,fopo.,al cell cumpat:1io11 :,lwuld he ,upported hi field and lahoratorr tests and analysn lo u.,.,ure .,tahilitr and reliuhlc /'<'r/ormw1n*

A plan /or sefflemem meusuremenl that I\ ,un,juClun for 1,rod11.-i11.I!. l"t'J>rnt:11tt1ll\'t' selllement data thruuglum11he di.,1m,al ffll., n n.*,1111red Seuleme111 mewurt:ment ,tul/1111, should he o/ .rn//icient co1*erug1.' and should he ,1rult'g1cul(I' J>lau.:d lo _1 idd udl'ijlluft in/hrmation /or determination o/ differential and residual ,e11/eme111s .\/o111/iJl'lllg monuments should he designed to hi! durahle l'ht! proposed kecJ lletl<.y u/ monitoring should conform to accl!ptahle pract ice (c. g ...\RC

• I ()8')1 Procedure., and specifications/or use o/riprap. rock mulch and /or filter placem1.111

,hould he prodded and.,hould he lW1.,istent u*ith commonzr accepted t:ngineering practice and lhe de., 1gn v1eci/icat iom r.\'R(

• I er- and / 1)8}I J'he comtrucl ion .,equence ,hould he descrihed and denwnJfnlled to he utlec11wte 10 achil'l'c: the into11led con/iguratwn /or tl1t*

failings The propowd flfne lo completion ,-Jw11/d he remo,whli w:hin*ahll.' .*lppriJ/JrJUh'

{_)(

• prm*isiun., ,hould he prl!\'hkd to t.'m ,,re thaf the con.Hruuion 1111/ he in accordwJL l' 11111, the rec/amafion plan and !hat the uppropna/i' records will he rnwmamed If *s_.1 should pru\'/de the in/urmatwn necn.,an tu ,upport (II/ i:len11io11 of di.,pu,,J/ L l°il c,ms1ruct1,>n Rl:FFR/:'.\( I ..~- /)emen el al. /()8- 'Recommendations to the .\R( '/or Re\'H'II ( 'nterw

/or .*lltema1il*e .\frthod., o/ /,u11-/.e\'f:I Rad/(}uc/11*c 11 *wfl' /)npo.,ul .. .\'(RF<, ( R-511./ I

\R(

• l>ecemha IV*- 'lk\lgn ( w1.\tl"/1(1/un and lmJJtTlwn u/ /:mha11kme111 lfrtl'111tu11

.\)\fems/or ( *rwuum .\/ill,

• Regulaton <i111tlc J 11. RcH,1011 _,

SR(* Auxust I 98_.., "Rock Riprup Oe.,1gn .\le1lwd, and !heir .*lpplicahi/i1_1 to l.011g-frrm ProteClion o/ I 'ramum \fill Tarling., l111po1111dme111,. .\ l HF< , __lt,8./

.\'R( * .lanuan /C)8Y. * .\'ta// /'echmcal l'o, ill on on Inti ng and Inspect ion /'law /)ur 111g

( 'onslruction u/ /)(JI:*, Remedial. lc1tn11 ul lnacti1*e { ram um .\Jill lulling, Site.,

Re!i!ponse # I 0 Details of the L:on.slrul:tion of the dispo:,,al ct'lb has been pn1\ 1J,"', lu th1..* '\IU lhn,u~lt the following documents

I Mr. Joseph J. Holonich August 28. I 998 U.S. Nuclear Regulatory Commission I Cell 1-1 and Cell 2 - Construction Report: Initial Phase ** Tailing Management S) stem.

I White Mesa Uranium Project Blanding. l :tah * [)" Appolonia. submitted to NRC :\1ar1.:h I.

1982 I Cell J - Second Phase Engineering Design Tailing l\fanagement Systen1. White !\.ksa Uranium Project Blanding. Utah ** [)"Appolonia. suhmitted to NRC May 20. 1981 I Cell 3 **** Constrnction Report: Second Phase *** Tailings Managcmcnt System

• White l\ksa Uranium Project *** Energy Fuels Nuclear. Inc .. submitted to NRC March 4. I 983 I Cell 4A Cell 4 Design - Tailing Managcm\!nt System White Mesa Project. Blanding.

Utah l 1MFTCO !'vtinerals Corp .. suhmittcd NRC February 8. 1989. rc\*ised January Io.

)990 I Figure I of /\ttad1111ent ~ sho\\S the location ot' existing and prnpost:d scttkment mu111tor111!,!

I locations on existing Cdls 2 and J Settlement monitors arc monitored on a month!) hasis utilizing standard sun L') ing praL"lice:, fur I \CrticaJ control. :\II clerntions an: relcn.:nced to ..m established hend1mark located on solid gruund a\vay from the tailings cell:-.. Settlement for each point is tracked lllili1.ing a spreadsheet prng.ram and graphs. Figure ~ of Attachment 4 represents the design of the settlement monitl1rs.

I 11. The rt:clamat1<J11 /J/a11 ,ho1t!J uddrcs., radrunuclidc., other than rod1w11-l :!(1 that 111u1 rt'</1111 <'

cli:anup I The veri/icl!lion ,urn'}, a., dncrihed in Appemln. A o/ the n:clamation plan de.,cnhe., u method to ensure thal only radium-))6 concen/rations u'i/1 he less 1ha11 XR(

• rt'cJ11ircme111.,

I ( )/her radionuclide.,. includin>?, thorium-:! JIJ and uranium. may a/.,,; he present in /he wit fl is noted !hat ICS.-1 slate, in Section 3 3] of Appendix :l o/the reclamation plan that *;1 /he I /i.u:iltly currt'nl(v mom/ors .wi/s /or tht' prewnce of Ra-2 :!/J. such results herng tm'wllled n1 rhe second semia111111al e//luelll Ra-2:!f>-('nit report for euch year ( iuicldim.' i*alue., /or thew

/lrn ma/erial, \\ ill h,, delermmed und II ill form the hmi\ for the de,lllll/J o/ the ll"hth' \!nit I ,\Iii/. .

• Thi., .,tah'me11t £1/J/Ji.'111*, lo imp/\ 1'1111 111 o rc1d101,*11t luln 11,// ht' "'"'f>!t'd d11rtll,!.!.

rcdama/1<111 /Im, en'r. 1/ thi, /, the ewe *he ,econd r<1dt1J11U,-!1dc ,, 1111: 1de1111/it*d I /{'SA ,*huuld ell ha ( I J pronde techmcal 1m11/h ul/1111 for not 111clud111g radw1111cl1tlt.*, utha lhan radium-] ]6 in !he soil dean up plan. or f :! J de.H'rihe !he ml'llwdolog\ thal 11 ii I he wed lo determine 1ha1 olht:r rudionuclidi:s IW\'t.' heen reclucl'tl tu 1lffl'/Jl<1hlr frrd, I

I F ;USERS*.SfAFF\RAH'.RE:CRES98 DOC I

I Mr. Joseph J. Holonich August 28, J 998 U.S. Nuclear Regulatory Commission I Response #11 I IUSA presently monitors for both Radium**226 and natural Uranium. It is planned to use huth uf these radionuclides as a basis fr>r soil cleanup at the site.

I 12. The vulue proposed as the hw:kground radium concentration in the soil should he j1rm*idc:d I In accordance 1rith Appendix .*Io/ /0 ( 'FR Pan ../0. during the final site clt.',1111111 the wt/

must he reclaimed sw:h thut the a*.*eruge radium concemratiu11 in the soil doe., 1101 e.\'Ceed the hackgrowui lei-el hy more than 5 picocuries pa gram rp( 'i/gJ III the 11/J/h'r 15 l*emimeren I (cm) or hy more than 15 p( 'i/g in 15 cm sections helm, the upper 15 on in orda lo co1111,~i with these n!gulations. a nilue jiu* the hackgruund radium concentration in 1he soil musr he I determined In !111: redamation plan. Jl!,\:-t lws prodded the hislorical soil sampling duru.

hw it has not commiffed to a mlul!j<J1* fhl! hackground mdium concentrarion in soil I /USA should prm*ide rile value/hr hm:kgrmmd radium concenlralion in soil 1ha1 lri/1 he used to determine !he soil cleanup slandards during decommissioning I Response #12 Based on soil !)jmpling data gathered over a 16 year period (Attachment 5) at sample station BJ IV -3 I located upwind and 5 miles west of the White Mesa mill the Radium hackground concentration in the vicinity of the mill is 0.93 pCi/gram. This \*aluc will be used hy llJSA as an interim \aluc for the background concentration. Prior to initiating cleanup of \.\ ind hlown <.:onl'tmination Jl lSA , .. 111 I conduct a systematic soil sampling prt>gram in an area within five miles from the site to dct(:rminc the average background Radium concentration to he ultimately uscu r'or the cleanup.

I 13. Technical support should he prorl(/ed /or the scanning rate wee/ fur 11111clhlo1111 n mram i nal ion clur ing 11111/ decm111111s.\ 10111 ng I On rhefifih pa?,e o/ lhe mill dccommt.\.rnming calculariom. 1h1' rate o/ .\u11111111g mecl /or rill calculation ol the rime required 10 scan /or u indhlown contamination i., () 5 meter, /lt'r I sffond (mlsecJ .*kL'lmling lo .\'l 'Rl:'(i!CR-58.J() f.\'R( *. /()I)]). the renmlllll'nded ,c,11111111g rate /'or a ground SUIT(\' is 0.5 mlsec:. ( J/ concern to the .\la//i., !he polelllia/ /or fl S.-1 ., uw

,~la 0. 5 m!sec .,canning rate to result in inan:uratc swTeys I I' 1SA should adopt the .\canninx rill£' n.*co111111e11tleJ in Xl 'RF.(i/( 'R-58../1), or altemarely.

prm*, '.: a h'c:hnicalju.wi/ication rlw1 ii., proposed scanning rale 1rill prm*,de ,1a11rafr rnrre_1 I resu/lS. fl the recommended .,cmminR rate is wlopred /{ 'SA should rel'iW ir.,

decommissionin~ cos/.'i to re/fret rlu: lime and a.,.,uciared costs needed to complt.:h' il1t!w surveys I F ,usERS\$TAFFIRAH\RECRES96 DOC

'I

I Mr. Joseph .I. Holonid1 August ~8. l l)lJX lJ .S. Nuclear Regulatory Commission I

Rf.FER/_. .\'<'/:' .\'R< *. /<)IJ]. ".\lwwal /or< 'ond11l'!i11g Raclwlog1nd S111Te1, 111 .\11;111111"1 u/

I License Termination. ".\'l 'RI:'< i.l( 'R-58../9 Response #13 I I USA has reviewed the calculations in question and finds that although the n:con1111e11<.h:J scanning rate in NUREG/CR-5849 (NRC. )992) ,vas stated in the assumptions for the rnkulation an inwm:ct I rate ( 1.5 meters/sewnd) was actually used. Attachment 6 shows the corrected cakulatior; hascd on an eight hour vvork day with an eniciency factor of 80%. This calculation is hased on all areas hcing I surwyed on a 30 X 30 meter grid. when in fact the reclamation plan stah:s that the **halu** areas,, ill be surveyed on a 50 X 50 meter grid whid1 gives a more consl*native cost Based on the n:-.ull\

of this corrected calculation the cost of the project would incn.:ase h) $~,-t.56.00 hased 011 tilt' Cl 1-.t I per man hour for this task. This extra cost is less than 0.2% of the total cost of the mill decommissioning. llJSA proposes that this adjustment to the total reclamation cost estimate hl' made upon final appro\'al of the Reclamation Plan and the associated cost estimate.

I 14. Additional in/ormation ahow the locatio11 o/ samp.' rakt.111 to dwractrri~e the radon hurnt 1 materials is n'£J11ired I In Appendix .-t of the J'ailin,1;.1 ( *o,*cr l>es1gn (1'ita11 /:*111*iron111e11tul. /<)<)61. dutu i., ;mmdcd

/in* the Wilings and materials that 11*il/ he used to construct the tai/111g., C//l'l'I' I /1J11 ne, I i11suf/icient i11/iJrmatio11 is gi\'en ahow the locutio11 and depth of the .,ample.,. 11 l11ch I\

necessw)

• lo determine 1rhetht:r tlu:.,e samples are repre.,emat ire o/t he /011g-t('!'11J proJ>t' /'l 1e,

,,tall materials 011 site the samples at tJUestion include.

I (aJ The sample.,* laheled "Tailing., . .. "( 'omposite (JI. 3 cmd 5J. "Site #I. " and "Silt' #../.

• I (h) in a .\larch ../. I ()()8. Rogers and Associate., 1:'ngine£'f'i11g ( 'orporat ion report.

/he s*11nples laheled "Random fl. J and 51. "Site I. .. mu/ ",\'ire../ .. in a .\la, 9. / 988*.

I Ro,t:ers and .-1.,.,ociarn re/Jori.

(CJ !he .,,1111;,le laheled "f I-I** 111 a /996. lc/1*w1ced ft:rr11 le.,1i11g re;1//rt I lhe sample lahded .. l I-/ .. in u Septemher 3. / <JIJf>. Roger, anti :ls.\/Jciutn l'L'/1//r/

and I (eJ The samples luheled "Ji_,_,1 /'it I. l t111d 3 .. 111 u .\larch 8. I <1,i..*::. /) *. IJI/J///0111i11t*;1ur1 (depth of .,ample.,* 011~1 is ,u,ededJ I For the ahm*e listed .,ample,, fl 'SA .,lwultl 1n*m*1dc ti map ,l,011 ,Ilg the ,umpli11g l11t"t1tw11, and the depths at 11hich thne .,ample., 11 ere au1uired I F 1USERSIS f AFFIRAH\RECRf SS!! OOC I

I Mr. Joseph J. Holonich August 28. 1998 U.S. Nuclear Regulatory Commission I REFEREN( 'E: Titan Environmelllal, "Tailings ( *o\'er Design White Me.,a .\fill. <Jctoher I 1996.for Reclamation <?!While Aksa Facilities. Blanding. Ctalt. "prepared for Fnagy Fud, Nuclear. Im: .. /)em*er. ( 'o/orado. ( Jctoher 1996 I Response #14 Please refer to the llJSA response lt) #3 aho\'c Cl11u:erning the location and charadcri1.at11m ,it I samples for details concerning a. b. c. and d.

Concerning the samples labeled "Test Pit I. 2. and 3" in the March 8. 198]. I)' Appolonia report.

I these sample were taken from the bottom of bulldozer cuts which were cxca\*ated IO lcct Jeep tu expose the undisturbed clay layer. As stated in the response to Question 3. sample lJT-1 came from the same test pits.

I 15. Cm?fidence limils are retJUireJjiu* the guideline mluefor the correlation hl!l\n:en gamma I reading,* and the Ra-2 2() c,ma111ra1ion On page X <?/ its Decemher 16. l'JIF' respom*I!. /USA states tlwr a correlation u 11/ he I per}'hrmed hetl11:en gamma reading\* and the Ra-2 26 c:oncel1/ralion I/owner. IC'.\:-t lw., not

.\pec(/ied the c01?fhlence limilfor the guideline l'lllue lo he used in 1his cor.*e/arion In the past. the NRC staff' hasfimnd this method of correlating g"mma readings to soil radium I concentration accep1ahle when the guideline ,*alue is set al the lower l)j pcrcen/ cunfidenn' limir olthe correlution I /USA should indicate the confidence limit ii H*i/! use in making the correlation hl'/11 t'l'II gamma readings and radium concelllrarion from 1rhich the g111deli11e gammt1 rt'ud111g 1*ul11t.'

will he esrahlishcd I Response # I 5 I JUSA agrees with NRCs comment and commits to the 95 percent confidence limit fee the guideline value for correlation between gamma readings and the Ra-226 concentration.

I 16. SURf:4CE WATER l/YDROU)<i}' AND ERO,\'JON PROTEC 'TIO.\'

I Additional infi1rnu11ion and analvses

- are needed to slu.111 ilwt the hret1ched area of ( di No . ./A is protecred mlequatelyfi*om erosion I Because there is a potenlial fi,r gully hewkwring /0 ocrnr and potentially a//ec:r rhe reclaimed railings area, erosion prorection may he needed lo mitigate the e/(ecr., o/ local scouring and/illure gully hem/cutting 71,erefore. I{ SA should prm*ide esrimalt'., o/ 11,e peak I F llJSERSISTAfflRAH\RECRES98 DOC I

I Mr. Joseph J. I !olonid1 .-\ugu'.'-l 2S. I l)l)X U.S. Nuclear Regulator~ (.'l)mmission I pmhahle 11wx111111111 flood (!'.\IF) j/011 through the hreach. 11 ,11.:r wrfan' 1n*o/i/n t ha1111l'I I wlocilies. riprap needed. scour depths. and olha de.,iw1 information including dra11 ing, calculations. and analyses.

I Response #16 IUSA provided partial response to this comment in previous submittals to the NRC in addition. the I attached information (Attachments 7 through 11) ha\*e been prepan:d.

In the 1990 Hydrologic Design Rcpol1. llJSA shov,cd that the six-hour Pt\*1P \\as I 0.0 im:heY lhis I design storm is adjusted for elevation and distributed o\*er time for both the six-hour and one-hour durations on Attachment 7 and plotted r,n attadrn1ents 8 and 9 in accordam:e \\ 1th methods of 11!\tR

49. The peak discharge of this storm (PMF) through the Ccll 4A breach. 2057 cfs. is shov,n in the I tabulation of the Rational Method cakulation (Attachment 10). along \\ith the peak depths and velocities frn channel hed widths of 60 and 80 feet on both sand soil and bedrock. If thi: channd is in sandy soils (as expected), the scour from the PMI: could be 3-4 feet if the duralion of the flood I is not taken inro account. Hov.cvcr, PMF is a oncc-e\*cr. very brief r:n:nt that would not bi: expected to last for enough time to cause J-4 foct of scour. v.foch is cakulatcd on the assumption of long-term I or repetitive flows of the design peak magnitude. which is extremefr consen ati\l:.

In any case, no riprap would be.: rc4uin:d if the hrcach were cut into bedrock. because thl' alhrn abk I velocity over the rock is about the same as the peak PMF \'clocity. If the breach is cut into s,md) soil. riprap with d~ 0 of 9.5 to 11 inches would be applied to the channel and slopes. up to the Pi\.ff peak depth mark. in a layer at least 1.5 fret thick. The downs* *tm end of the channd riprap v,ould I terminate in a key. cut into the suhgradc. 4.0 foet wide by 4.0 feet deep and extending across the entire channel. The key will be tem1inated at the depth of bedrock if less than 4.0 feet below grade.

I 17. Additional infi,rmation is needed to asses., the adequa<.J' o/the disclwrge dwnnel To !!valuate !he adeq1u1£J

• off ht! disdwrge clwnnd it i., 11en'.,.,w:1

• ttJ k11011 t lie dn1111uge ureo I contrihwingflow lo th.: clumnel and !he haws /or/{'.\:.,\ eslimates o/ pmk />.\fl- f//Jl1 rute,.

channel \'elodties. flood mlllin~s. t!lc Such i11/orma1io11. indudin}!. detlllled drm1111g., und I calculations. 11re needed to determine i/the channel and its as.\llcillll'd erosio111,roh'di"11 are adequate. Therefore. /{ /S-t should provide this i11/ormatio11 or. if such 111for111a111111 hm heen provided lo SR(* in the 1ws1. l{'S.-l .,lwuld proridt: appropriale rc.:fffence.,

I Response # 17 I The PMF peak discharge through tht.: Cell ti I discharge channel was cakulated in thl.* same "a~ a~

described above for comment # I 6. The drainage area. 143 acres. \\as measured from the most recl.'nt 1"'==200' scale topo map of the site. The longest flow path is 4800 feet. Tlw 1x*Jk P~vff Jischargl.'

I F IUSERSISTAFFIRAHIRECRES98 DOC

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I Mr. Joseph J. Holonich August 28. 1998 U.S. Nuclear Regulatory Commission I was calculated to be I 344 els (Attachment I 1). With a channel base \vidth of I OU feet, the peak I velocity through the channel would be 7.96 fps and the peak flow depth would he 1.62 feet. If the channel base is constructed to bi: 120 foet wide. the peak velocity \Vould be 7.45 fps and the depth would be 1.45 feet. In either casc. the 1:hanncl will he in hedro1:k. with allowable.: vd(Kittl*s of X - Ill I fps, so riprap will nol be m:ci:ssury: i.e .. tht:re should hc no s1:our from the PMF.

18. Additio11al rock durahilily 1es1s are nen:s.,ar_l ro clwracteri:e acle,111art.:(\' rhe .,w1dstom: md I /U.'-iA proposes to use as riprap.

<)ne rock durahilily le.\'/ is 1101 considered lo he mll'i.JLWle to doc:wne/11 that the sandstone I roc.:k riprap is .rnffide11t(\' durable to meet lon~el'ity requirements. Gh*en the marginal quality <?(the rock. /USA should conduct several durability test.,* takenfi-0111 samples at the proposed source. Results of these rests should he prol'ided to .\'R(

• I Response # 18 I IUSA agrees that additional testing nceds to be done to confinn the integrity of the rock proposed for the riprap installations. A program f<x obtaining representative samples of the existing stockpiles I of rock material. as well a"i selecting appropriate tests to continn the acccptabilit) of the onsitc rOl:k is being fonnulated. The details of this program will he forwarded to the NRC under separate 1..:on*r.

IUSA commits to having a sampling program in place and obtain samples by September 30. I 998.

I Laboratory testing and summary of results is cxpecte<l to be complete by October 16. I998.

As an alternative to thc onsitc rod.. ll 1SA has lncatt:d u dcvclopcd souH:c of limcstunl' rlld.

I approximately IS mili:s south of the Mill site. This rock was approved and utilizcd on the l

• S Department of Energy. Monticello Tailings Remcdiul :\1:tion Projed. and \\ould be ,.l\ailubk in thl' event the onsitc rock is umuxcptablc. This rock v,:ould hc only incremcntally more costly than thl' I nnsite material because of less handling costs (excluding haulagt:) than the onsite muterial. and kss waste through the screening and sizing operation. /\djustm\.'.nls to the reclamation cost estimate.: \\ ill he made in the event thc off site: snur1:e is prctcrablc.

I J <) Additional in/tJnnalion is needed to descrihe the proposed rock toes I Detaifrd drmrinKs and calc11/atio11s should he pm\*ideJ to document the design haw., and lo show thl! desiKn cunfiKurations of the rock toes. panicular(r in those locations uhere tht' I toes transition into areas w/11:re .,mu/stone hedrock is pre.\'£'11/ The comJ}(.'ten(r u/ the bedrock layer also should he a.,.,*essl!d I

I f ,us(RSIST Af flRAHIRECRf S98 DOC I

I Mr. Joseph J. Holonich August ~8. I lJlJS U.S. Nuclear Regulatory Co111missil1n I Response #19 I Attached is a dra\ving ( Figure 4 Attachment 12) showing a plan view and cross section of a l) pt Gd rock apron at the toe of cell #3 outslope. The apron is at least 7.0 feet wide and 2.0 feet thick ,,ith I a surface slope of 0.0 I ft/ft. and the d~ .. of the rock in the apron is 8.0 inches. The dl.'pth of sl.'our in the sand soil predicted under PMP is 1..1 fed. so the apron thickness is grl.'ater than the scour depth.

If bedrock is encountl.!n:d at less than this depth. thl.' key wi II be taken onl) to the top of rock. l"hl.'

I cakulations of rock sizes needed tu resist erosion and the scl 1ur depth al the edge of the rock aprnn arc included in tabh: form with this n:sponse ( Attachment 12 ).

I It is not clear what purposl.' will be sen l.'<l hy trying to assess the crnnpt*tenl'y of the bl.'drock. or ,, hat is meant by Acompctency. a Whatl.'\cr thc properties of thc hedrod. they will not he d1angeJ h~

anything that IUSA might do to achieve reclamation. The durahility of the bedrock will he .. imilar I to that of sandstone samples from thl.' sill.'.

I 19. <'/.AR/Ff( Al'IOXS ..t:\'f) l:'/)/TORIAlS

/'lie di.,<*11.,sio11 co11ccr11ing potelllial impac1.,* 10 endangered and 1/m:ah'm'd '/lt'l/1*1 ,!,,,,di/

I hi! hroug/11 up-to-dah.'

In Section 1 - of the redamatiu11 plan. It *s.-1 di.,cu.,.H's 1he e/fl'a, o/ !lit* ,11{' 011 t'11d,111gt*red I and thre£11el1t'd .\JU..'cie., a., o/ I ')~8, 1rhe11 the l:*11riro11111e11tal Rtpon /or 1/ie .\Ill' 11 u., 11 nlkll

/Jetwee111hat time and th,: prcselll. flt'\\ species may hare hee11 placed 011 or remort'd from the endangered spcc:ies list. and 11eu specie.,* may ha\'e hn:11 uhwn*ed un sue I /USA should update its analysis of pote111ial e/fec/s from redama1io11 acli\'ities on l,sred proposi:d. or candidate endangered or threawned specie., If approprialt'. If'.\'. I should I confirm. at a minimum. that 1he n*aluations co11due1ed fur the I ')-S e11du11gered ,11t*cie, ww~rsis ,iii/ are applicah/e I Response #20 I During the preparation of l.:.nergy Fuels Nuclear* s (I*T7\ ). the prcdl.'ccssor to II 'S:\. lil'e11s1.: n:nl..'\\ ;ti application for Source Material l .iccnse Sl *-1 >58. NR(

• staff prcparl.'J an 1-!1, ironmL*ntal assL*s-.;mL*111 (EA) which v.as i~sucd on f*ehruar) '27. I l)l)7 ,,.ith a final finding ol rn1 signiliGmt impact ( H )\SI)

I prepared and issued on ~1arch S. 1997. In this h\ !\:RC staff addressed the 1ssuL* Pl cnJangerL*d species on the site as follm., s:

I 4.5 Impacts on Ecological S)'stcms 4.5.1 Endangered Species I F 1USERSIS1Aff\RAfr.RECRf5\l6 UOC I

I Mr. Joseph J. llolonich .-\ugust 28. J lNX ll.S. Nuclear Regulatory Commission I In the ,*icinit)* of the site, four animal species classified as either endangered or lhreall'lled ( i.t* ..

I the bald eagle (Haliaeetus leucoccphalus). the American peregrine falcon ( h1ko pen*grini, anatum), the black-footed ferret (Mustela nigripes), and the Southn esh:rn "illcm fl~ rntd1cr (Empidonax traillii cxtimus)) could occur. While the ranges of the hald eagle, pen*grint* t'akon I and willow flJ*catcher encompass the project area. their likelihood of utili1ing tht* silc i, extremely low. The black-footed ferret has not been seen in t:tah since 1952 and is not c,pct*ll'd to occur any longer in the area.

I No populations of fish are present on the project site, nor arc an)* known to l'Xisl in thc immediate area of the site. Four species of fish designated as endangered or threatened oct*ur I in the San Juan Rh*cr 29 km (18 miles) south of the site. There arc no discharges of mill effluents to surface waters, and therefore, no impacts arc expected for the San .Juan H.inr dut*

to operations of the White Mesa mill.

I Currently, no designated endangered plant species occur on or near the plant sitt.*."

I 21. Two n'.f'erl!nce.\ rec/litre clari/icalion I In Seer ion 3.]3..: o/ rhe redamarion plan. 111 o re/,n'IICL'S are nwtle to i11/or111a111111 ctmlained in Sec1w11 A J:? Jhe sra/f 1., unahle 10 loulle a See11011 ./ 3 _1 / 111 lht*

redumalion plan II *s,-1 should dari/r 1'11..*,e reference, I Response #21 I The reference in Section 3.2.3.2 of the n:clamatinn plan to Section 4.3 2 I is i111..:om.:1.:t lhc correct reference shoul<~ have been Section .L2 in Attachment :\ (Plans and Spec itic.tt 1rnh f, ,r Reclamation).

I 11 .-In apparem inconsislency ht:lln'en \*alues used /or 1he 11wi.,111re collll.'l/l o/ the i.la1 011LI random/ill should he re.mlwd I On page 5 o/Appendix /J of lhe failings ( *owr /)n1gn rTi11111. IW61. fl S.l .,1u1n 1/1t11 t/Jc I moisrure confrlll o/ fh,: elm* and random /ill wet! /or 1he radon flux culculati11m t1rl' JI I percent and <J 8 percenl. r,:.\/h'direlr lhe.,e rnlue., ure inrnm1.,11..*111 11 i//1 the rnfue., 11,cd lo calcu/arl! rhefree::e-rlwu* e//1..'cls on the cowr. 11hich are 13 ') percel/l for 1he du1 u11d I I /8 percenl fiJr the random fill rTiran. /')')f>, Appendix F. />age 31 Response #22 I The moislurc content of the cla~ and random till ..ised in the radon tlu:-.. 1.:alculations and till: \ alul.',

for the clay and random till used fl,r thc fn:c1t*-tha,, efli..Th on thL* L'll\ 1.:r art' w1rl.'Litcd 11u111ht*1, ,h I I' 1uSlRS1SIAH\RAH\RECRl S\>6 OOC I

I I Mr. Joseph J. Holonich August 28. J 998 l r .S. Nuclear Regulatory Commission I they were sets of assumed values for hvo ditlcrcnt unrelated calculations. The moisture 1.:ontent u~cJ I for the Freczc/Thav. cakulation \\as ,:ctuall) 12.5% which is the average between the ranJom till moisture of I I .8% and the I J.9% of the cla). The dillerenn: in moisture conk'nt 1lf the matt:nah used in these calculation**. is also ..,,*ithin a range that \\ould he expected during normal con:-.trudit>n I activity and therefore not unreasonable.

23. Applicahility of replacement pages should he clarified I In Allachmenl 3 to !(/SA *s Deamher 16. J()<.r. re.,J)()n.w. six JW!f.es fi*om the **,;1.*otecl1111utl Data Base/or Monticello Mil/site ( 'haracteri::ation .. are provided as replacement pages for I .\'everal illexihle paxes in JU5iA 's initial suhmiual It is not dear how this data fi*om the Momicello site is app/icah/e or relevant to !USA 's redamution activities and analy.,e, lherefhre. !(/SA should darifj* the applicahility olthi.\ data ha.H' to the pre.,ent licemmg I aelion I Response #23 The original data included in the Titan Tailing Co\'cr Design report \\as suhmittcd at a time \.\hl'n I LFN (JUSA *s predecessor) was considering accepting tailings material from the Munti~cllo I ailing site IUSA has not pursued this action. therefore the data for the Monticello site can be deleted from the submittal.

I If) ou ha1;e an) questions ur ulmments cum:erning this informatiun. picas..: call I Ven truh \ 1 n1r-;.

I ~$~

~ larold K. Robert:-.

1:xcculi\'c Vice President I ltRRipl I Lndosurcs CC: Center for Nudear Waste Regulator) Analysis I ATTN: Patrick MacKin 6220 (' ulehra Road P.< ). Dra\\cr 28512 I San Antonio. I c.,as 78228-051 O (2 copies)

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I I ATTACHMENT 1 I

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• CELL 4 DESIGN TAILINGS MANAGEMENT SYSTEM WHITE MESA PROJECT BLANDING., UTAH APPENDIX B Umetco Minerals Corooration AUGUST, 1S88

I I APPENDIX B I TABLE OF CONTENTS I

I Section 1 Figure C-1, Boring and Test Pit Locations I 2 Chen and Assoc:ates, Inc., 1978 I 3 4

Chen and Associates, Inc., 1979 Dames and Moore, 1978a I 5 D'Appolonia Consulting Engineers, Inc., 1981 6 Table C-1, Su1T1nary of Laboratory Test Results - Cell 4 I

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FIGURE C-1 I

I Boring and Test Pit Locations I

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• chen and ~ociates, inc.

I CONSULTING ENGINEERS I ~L, fQUMIAnoM IHGINIIIIN, NS. ZUNI 1924 UST FIRST STREET C£MVER, COL.OR.ADO 10m

• CASPER, WYOMING 1~1

• 303/7.U.7105 307 /23-4-212t I S~CTIO~l 2 Extracted Data From SOIL pqoPERTY SiUOt EA;:{TH LIHEO TA!'- tl1GS RETEHTION CELLS WHITE t-4.£SA LRA>4IUM PROJECT BLANDING, UTAH I

I Prepared for:

I rnERG'f FUELS NUCLEAR I me.

I PARK CEtHRAL 1515 ARAPAHOE STREET OE~V£~. COLORADO 80202 I Jot> No. 16,406 July 18, 1978 I

I

I I TA2LE OF CONTENTS I

I Table No.

I I II Summary of Laboratory Tests Laboratory Permeability Test Results I III Results of Atterberg Limits I Figure No.

I 2 3

Holes 1 through 10 Holes 11 through 20 I 4 Holes 21 through 30 5 Holes 31 through 33 and 38 through 43 I 6 Holes 44 through 53 I 7 8

Holes 54 through 63 Ho*1es 64 through 73 I 9 Holes 74 and 75 and Legend I Note: The attached logs have been redrawn I

I I

I I

I

TMU I SUNKAAY OF lAIOllATOllY TEST ACSULTS Page I of 2 MAT'IIIAL .... I_ Optl- ATT(AICAC LIIIITS CAAOATION AHALYSIS Tett Depth Ory U~LDCD P(ANC MI ll TY i,.:.htur*

llolc (ft.;

"°' ""'* Ory o.,u I ly C-lMC liquid l'hulclty

""- Pa11l119 Lua th*n Dry 11.>l uu,e Sp.elf le Soll Content O.nalty Llall lnJu Uo Cr*vhy Type 1200 LU Dena lty Content ft .l'!r, ao./sec.

_{l)_

2 o-~

(pcf) (pd) (l) Ill (1.) (1.)

• l'l.) (pcf) ('t) 117.S 10.a 20 ) 116 58 19 111,, 16 ... o.s, s.~ .. 10-7 S*nJy SI It

) 7-8 1.2 .

• ~-*

21 6 116 62 Sandy Cray ey 5 7}-10 11,S )) 8 )/Ii In, 56 1 llt 12 102. l 22.0 0.01:5 8.i.10- 8 2.65 c.1careo111 6

.1-2 10,) 25 7 116 77 SI lly CI *y 6 lj-9

'*' 27 8 ,. 70

'S.an.Jt (l,1yey

~ 11 t S*ndy Cl*y I S-Sl I). I )/Ii In.

0-1 a.1

"' 62 I

C*l<..r*ou, s ... ,J,\llt 10

' li-6l 2ft NP 10 116 lilt SJ n

S*nJ - SI ll Sa11Jy C l.*y 11 SHI Iii.a 26 6 116 6S SI It atone-C l*ysto,10 12 2-5 101,0 20.6 5) )5 116 88 s, ,s.o 18.) O. Ol.8 6,6.10- 8 2.67 \le*lhercJ I} 7-8 I), I )9 CI *y>I unc

1) 1/8 Bit

,. ,_, ,,. ) Ito 21 /;It a,

(*I C,11 C'4.MII Si It CI .. y

\Jc .. th** cJ 15 I i-ftl 106.8 .,.o- 26 a )/8 In, 6S 27 10),lt 1e.o o.ou 1.2x10* 8 2.6 ..

Cl t1y1ron*

t\..)J. (_. * ._., ...

I ~

17 2-3 11 ... 19 .-a s, s ... ...,.

S_.nJy C 1.,y

~ i It A, 0-3 117.5 11.8 I 2) 6 116 70 22 1-2 ll.J 26 10 ,,. . 109.9 12 * '* O,t1)5 1.i. .. ,0- 8 S =Jy C I *y cy Slit

... J,

/JJ 1-) ... 21t ,,o 7) 87

~

\le *the r cJ Cl .. y

,h 6-~ 61  :,o l)O C 1 .. y,to11c

/?5 Hi ll.) 26 9 ,,.

57 CI *ytlunc S enJy CI **1

)6 ltj-S 15.J 20 91

i VC"*' ',~re-d 0-J 2-)

11.1 8.5 28 19 10 2

)/8 In.

116 72 S9

.. l I rAy 1 c.

)..nJ, (l4y httc.

)2 8-81 ~ ....., ( \ j 11 5.6 2) 6 no 7)

~ ... Jf (l*y~y 31 0-1, , ,a.a 11.5 23 5 ,-a 72 \11 t 110. 5 II. 5 6. , .. ,o* 1 ~ 4**"t C 1 * 'f c-

)8 0.6)  ;

5-7 111 0 16. 7 2'J llt ~ i II Ito )/8 In. 69 101.1, ') ') .......... ll*1 le-SI

• ---* 110.0 16.t 2.. 'J NB 61, 27 'of, ,. IL._'*

0.0~1 ~.u.10*8 ll~lHL.. __ J.f1alll.:~ _2.tiL_ ---- -

~ JH*f t { f If I

TAlltc SUNKNlY OF L.-aOAAlOlY TEST AESULTS htJe 1 ol l NATUllAL ftul- O,tl- ATTEkl(lC LIMITS ClAOATIOH ~H~lYSIS Tut O.ittll Ory INuhture U"°lD(Q POii£ ~11 ll TY Hole (Ft.) "*hlurc Dry De111lty Content l lq.,1,1 llh1t l<lly ,w,..1 .... ,.., ln9 Spa< If le Soll lu, th"" Dry I\.Jh ... ,. ,,*vhy Cunlent hnalty ll*ll Ind** Uz. #200 J -U o.n,, fy Conlaflt Typ*

--- 1;1_ - (pct) fpcf} (l) ('I.) _j;) {'l.l . (t) _ J z ~ - -('1) h./yr,

"° : 9-'Jl t..8 n 8 1/J In. 60 s ...Jy ( l.,y "2 llHlol '] .L 16

,., 11- IJ 11. I ,,,

10 22 J/! In.

7) 86 SonJy C1.oy Cl*y1to11*

lo) 1-1&j 110.,') 16., . loo lit )/8 In. 85 ,.,, 10*,.1 15.8 0.021, 1. )alo-11 2.61

   ....       6.i-7       7.5 C l.ay1lone lt(i       0-2        12.)
                                                                       )0         II       )/8 In.
                                                                                             ,,,                    79                                                                             C.,
                                                                                                                                                                                                   ~

C . , .., .." I 22 6 *nJy l I *Y 76 s.,,Jy Cl*y*y via s-st ]O )18 In. SI It

.;(,          s-,                                110. 7    IS.6       2S 9            116 65 71               105.1       1).9        0. l)        L1a10*8
                                                                                                                                                                                                   ~*uJy C1....,

S.nJy Cl*r

 ..,(,       llt-15                                                   H          5            18                    5S                                                                             C

• I 1. *r e-o,n 51, 0-2 12. I 2) 9 Ill . 61o

                                                                                                                                                                                                   ~ .. ,J, ~Ill
                                                                                                                                                                                                   \ ... ,.ty ll *y H          ~-Si       7.8                                         28         lit          llO                   71                                                                             S..nJy C l.ay s~       ~1-101
                                                  .                   28          I}          lilt                  71
     /

V~II Sl*" 12. 5

                                                             .        )5          II          ...                                                                                                  S*11Jt C 1..y
   ...        O*I        II. 5                                        21         .

75 ~ JnJy CI *y

                                                                                                                                                                                                              , Si II y 62        II-Iii       8. I                                                   NI' I In, 75
                                                                                                                    )lo S*uJy Si II c.,,.,C'OU'l.

l,} '+-6 )0 ,,. #8 68

                                                                                                                                                                                                    ~ .... J  I. ~tll S ... Jy C 1.y 65          1-2        9.0                                                                                       ....

Ill' SI l1y S.>nJ 68 1;-11 s., 28 I) i8 67 S*nJy ti *y 70 11-i.1

                         '"*"                                         27         .           1;    In.              lt6                                                                             (,1fc*re-,lUI 72         0-2       12. 2                                                                                                                                                                      ~ *nJ L ~ I It 2Z         8            116
    ,~         111-1 I   12.,.                                        ...        2S           ,,,.

59 75

                                                                                                                                                                                                    ~.mJt LI*,
                                                                                                                                                                                                   \lc*tharaJ 7S                                                                                                                                                                                             ( 1.,y, I voe 12-llo                                                 i.s        n            Nl6                   91                                                                              (. I J.,.,. UIIC.

1... ,,111, - **---- ----*- . - -~-

TABLE 11 LABORATORY PEN4EAIILITY TEST RESULTS Compaction

                                                             ,/'...,

Saple I Sol I Type Ir Dry Hal sture i of '\ Surcharge I Permeability Density Content ASTH 0698 Pressure (pcf) (i) (psf) I (ft/Yr) (Cm/Sec) TH 2 P 0'-5' I Sandy Silt 111.6 16. It 95 500 0.57 5.Sxlo- 7 TH 5 @ 71'-10 1 Calcareous SIity Clay 102.1 22.0 10 t 500 0.085 8.2x10 -8 TH 12@ 2'-5' Weathered Claystone 95.0 18.J 91, 500 0.068 6.6x10 -8 TU 15 @ li' -ltl 1 Calcareous Sandy Clay 10).4 18.0 97 500 0.012 1.2x10 -8 Ttl 19@ 0'-3' Sandy, Clayey Silt 109.9 12. It 9'* 500 0.035 J.l1x10 -8 TH 37@ O'-lt' Sandy, Clayey Silt 110.5 11.5 93 500 o.63 6.1x10-7 TH )8@ 5'-7' Sandy Clay 102.4 17.9 92 500 0.041 11.0xlO -8 TH Ito@ lt'-5l' Sandy Clay 106. It 16. 4 97 500 0.017 1.6x10 -8 TH '*3 @ l)l-1&i' Claystone 1olt. 1 15.8 95 500 0.021, 2.Jx10 -8 TH lt9@ 5'-7' Sandy Clay 105.2 13.9 95 500 0. 33 J.2xlo- 7

TABLE 111

                                                                                 -     -         -   -       llll!b ~6.. - -

RESULTS OF ATTERBERG LIHITS AITEROERG LIHITS PERCEHT S11Rlt1KAGE PASS IHG LI quid Plastlc Shrlnka9e SMtPLE SOIL TVPE Llml t RATIO HO. 200 Limit Llml t SIEVE (%) (%) (%) 58 20 17 t7. '* 81 >! 2 ~j} O - 5' Sandy S II t 25 1.62 Calcareous SIity Clay 56 33 25 5 (!.il 7! - 10 1 Calcareous Sandy Clay 6S 26 tO 17.5 \ '. ~,6 J5ti&11l-'*i* 23 17 18 J. 80 19@ 0-3 1 Sandy, Clayey Slit 70 12 1.90 91 1, 1 21 26 (.ii '*!-S 1 Weathered Claystone 1.89 I "' 69 29 15

       }fl (al      5 - 7'         Sandy Clay

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                            '.                 I '                       lI            <.Liff)    '**

1 NOt~VAf , ..

I chen and associates, inc. ~'>

                                                                                 ;::,* C I , -:.,

I CONSULTING ENG'NEEAS ' I SCIL I. ,our,:>J.Tl'M IHGIN!tl!HG CEt.,VE;q, COLOP.AOO 1022l 1* I Extracted Oat! From I I I I I I I I I I ~1E:G'L F . .7~ S ti"l:CLE.;.'=l, I~~C. 1515 A..~>>.:..:=..oE STR::::'r I .Ci:*lV'E.q, COLORAOO 80 2 0 2 I Jo::i t.;o. 17, 13.) January 23, 1979 I I

iASLE OF CONTENTS Table No. I Summary of Laboratory Test Results II Laboratory Permeability Test Results Figure No. 2 Holes 76 through 85 3 Holes 86 through 94 4 Holes 95 through 104 5 Holes 105 through 114 6 Holes 115 through 120 7 Holes 121 through 128 8 Legend Note: The attached logs have been redrawn.

- - - - - - - - - - - - - -Joltlll lllMfl - - - CJIEN AND ASSOCIATF.S TABLE I

SUMMARY

OF LAElORATORY TEST RESULTS 3 I Pa9e 1 of

 ---            I                    ;,ATURA~JNATURALDRYATTER.UfllGUMllSUNCOtlFIU(O TRIAXIAL Sll,:AH TfSTS                            PEltCEIIT -;-------*- -** - - -

ttOl[ OCPTtt (f E ET) I (*/.) t.401STURE DENSITY (P(ff LIOUIO Llt.11T (*1.) PLASTICITYlOMPRESSIVE Ii.DEX (*/.) STREl:GTH (PSF) OEVIATOH STR[SS (rsF) ' COtlfltllUG Pflt:'::SUnE (PSf) PASSING NO. 200 SIEVE SOIL TYP[ _76 G. - *1 __ ,,.s_ __2, __ s__, *_ ------.=--=--=.:::=.;:::--*****--*---

                                                                                                                                     --~-1s-

• I-:>>ancty .-

s i 1t ______ 9.~ -~-JQ_ --~*_!!!___ ~ __!~~ *

• __ _ 16 ___ S t_lty,_!}r.1vcl ly_ sand

__17 /. 5 -_8 _ _ _8._6 JO 1_5

• 71 __ S,1ndyc1 ay ________ _

_ ]9 _Q._:_! ____,, ~ I -~o_ _ _ ?__ ---~3 ___ s.,ncty _s I l_t _____ .. ____ _ _5_:_l,i_ __5_~5 NP * , _____ 11_! ____ L1lc,1~*~gus_s.1n.ly_cJ.,., _ _ BO l~:2__:_]__ 39_*_. _ 20 _ _ _ "/!1 ____ Cal r.,"lreous __ sundy ,_I")

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                                                                                                                                                                             .<: l_.1)' ',I, 11w

---

CJIF.N AND ASSOCIATES Job No. 17, L TABLE I

SUMMARY

OF LAOORATORY TEST RESULTS 2

=~--= **]- -                        _N_A_T_lJ_R_A_L. -NA_T_l-lRAL DRY ATTfROERG LIM-IT-S UNCOtfflN (OITR I AXIAL SH (An T [ST~                -*,;l~flClJi*r---. ---                p~-~c        o_f_:-::;_ ___ --

liOI. E O( EPT;)t MOISTURE DUISITY llOtllO f'LASTICITYCOMPR(SSIV( O[VIATOR COtlflUltlG P/\SSIIJ!~ f SOIL TYP[ FE( (*/.) 1rrr1 LIVIT INO[X STR[NGTII ~Tn(~S PR(SSIHI( NO. 700 . (*,.) (*1.) (PSF} (PSr) (PSf} Sl[VE

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99 11 - 12 IJ.S

--------- - - - - - - 1         --------I                        ----1                 I             I              I                   -*-73  -------- ICldystonc -- - . *- - . -------- -*---
-~oo ___ J_ __Q_:_1_                                                  __17_ _1!P                                             - - - - - - - ___ !111_ _ _ -~_IIW_~~,n!I ___________ _
                  !j.S - 6               12.0                                          tlP                                                           61                     S.indstonc-sllt'Slonc

_!_~?___ l~:s,~_1 _______ )....,:J _______ 111

                                    -IE~     ----
                                                                            ;~ -:                                                              --~ ==I:.'.~~:=~~:,;*;*,;;~~:. .,I
                                                                                                                                          -* ------*-***-.                         ---- ..... -         --           I
-~~3___ J~_:__10.S___7_,o_                                            _1_8_ _1_2_                                             __            _ _37_____ -~"n~ly_<_::_l.1y ____ .. _                                __ /

__ I~------~-~- __').?__ )J_ _ 2_ _]() __ -'=~11_<:~!-t:<JW, -~.,nd*/ < l,,y\ 10 1

           , ____   0_: __1_ _ _ _S~- _                                    22   -~-                                                           _77_______ s.,n~ly __~_I 1_1 **--. _ _ _ 1
-*---- .6.5_ -_ 7                  ___ ,,_._5__                        _ _ _ _Nf__                                                       __ -~~--- _S.i_ncly_~i It*------ _____ _

10() S - 5.5 10.1, 28 6

• 59 Cl.--1ystone-s,1ndc;tnne

 *---------**- -- -------- *---**~                                                                                            ------            --..-- --- -                          .

107 7.S - 9

                                                                                     .. NP--

• 23 Sandstone

__ loB ___ 0 - I ,,.o 18 3 _ . - - - - - _____6~-- S,,ncly __ s i It-** __ _ t--- _ 12~}_:..Ji)_ _2,~ _J_O_ _16. * -~}_ ____ _Cl_.1yst?ne __ . ____ _

-i,-i I 09 113 11 -   5        *
                  -~- - ?.s *\ __~~--
                     ,, - n 25 25__

_,,_o_\-2Q 10 7 I -1  :=-----_ ___7_5___ , ~*~rHl 1*, c I ,,yey _<; i It 53 HI, Cl~ystonc I~!.!.:_*:!.."~ r_ed. C !"Y s lone.

 ---             ,-- - - - - - - 1                    1-------

I 10.5 - 11 1------1 I 1--- 211 Io ___ ,_______ ,__)-*- _JC l.1ys~o~e:-san<~SI Pl)t' I J/1 () - 2 22 I 6

                                                                                        -IIP                                                          !n                    l.~ilncly, __ ~1.,yry c;ill
  --f, 1;          ,,.s -    G I                       , _ _ _ __                                                                                      '.ifl                  (.1 I c ., reo11s nls
                                                                                                                         ---:~==~

116 0 - J 77 Si1nrlv silt

  -------1                  -I                         I               I           I            I             I               I                *-------                       -- *- '-----*-----*---- - ..
  =~}/--1-; : ; \_,~_._(_,_\

1111__ _ \_0 - _2 _l

                                                                       \

[

                                                                              ~~=I

2) ]

1

                                                                                           ~

G I I l 11:>

                                                                                                                                                       "/7

_I~->?~~~~~= CI  ;,y*~tone-*,.i11ds111111! Sc111dy s I It

                                                                                                                                                                              ~-** l~,,~*c;;_J ,__ --- ---
  ~--             *--      ---                                                                                                                  - - * *------**--*--------*                        ----***-   **-

---

CHEN AND ASSOCIATES Joh tin. 17, 130 l . ..

TABLE I

SUMMARY

OF LABORATORY TEST RESULTS

                                     .                                                               '                                                       Pt1~1c~    3 of 1
    -*---- --                                                                                                                 Jl[fl.CLIIT                                  =.:::.::.. __ _

NATURAL NATURALDRYATTEROERGLIMITS lJNCOilflNE~,TRIAXIAL Sll(AR TfSTSI DEPTH tlOLE MOISTURE DENSITY LIQUID l'LASTICITYCOMPR[SSIVE. O[VIATOR CONflN-tITT P~SSIIIG. SOIL T'(J'[ (f £ £ T) tit;, 700 (*/.) ll'Cf) LI Iii IT 11,cr X STRENGTII ~ T n E ss l'l(l S~llflf _1,n ___ 6, 5_ - 8. 5 (*/.)

                                                                ,,o

(*/.j 20 (PSF) I- - - - - ------ (PSr) (PSI) I _ . ___ - SI EVE __________ ****-* _

                                                                                                                 - - - - =-~8? ~'I \*/~;!;her;~,-~ ~*~Y';*;,rn~!~*:

26

**-'-'~-- _!_1,.5_-_L                 ___1(!. O
                                                             ----              12
                                                                                                   *-----                    **-G8----                  - -
                                                                                                                                                 $ ilndy c I ~1y -----* _____ _

120 l - 2

                ---------                                        25              8                                                  69           Sandy,         cJ.:?Y<:¥__~_!_ I_~----

_5_..::_~ t2_ _1?.t.? 29 10

                                                                                                                             --- 78   . ---- --
                                                                                                                                                 ~ nody_

c- I ilY_. ______ . __ _ _!J _: _1_!. 5_ -------- 'I. 6 1,2 211 __90 ______ ~!,1y~ton~ -***- **-* .... _ 122 25 n i,G ~~n~ly ,.__s_l 1 t y _ c I ii',' __ _

------- ------    '* - 6
                 ,,,. t4.
                        'i _- _l'i     ___6._,_1_                2G
                                                                          ----   0

()(, ~ilndy CJ ,1y _1~3 __I - 3 ---- - 23 ____ 71 ___ _S~ncly ,._ <; 1,1ycy_ s I l t ...

--   1,1,          '*.,.~:-_i_ --~!.Q_                            23      -                    -                         __0_~_               Snndy, cl ;1y<'y s I I 1.

_1?5 ___ 0 - l

                ------                 ___3_.8_ _                 22             6
                                                                                                               ------.                (, 7        ~~ndy__ ~ i_l t ___ _                _ ..

51, 31, 89 12]

                   ~I    -
                                                                                                         -     ------                             CJ.1ystonc I :?0        (, - 8                                         L1 I          21.                                                    90         Clc1ystonc
 -                                              ---                       I                                    -----                   ____     ,                     **--- - -*******--*
                                                                                                               - - - - -- --------1--                                     ----- -
                                                              =1                                                -----

                                                  -                               T. .E 11 LADORI\TORY PERMEM ILITY TEST RESULTS Compaction Ory             Moisture          % of    Surch;-ir!Jc              rcrmeub 111 ty Sample                          Classification                 Density           Content        ASH! DG9fl Prt* S Sll r l!  ft ./Vr.                 Crn/Sr.c.

(pcf) (%) (ps f) Tit 80 @ '*l-7 1 Calcareous sandy clay 100.2 96 500 0.01 7.flxlO

                                                                                                                                                                     -7 19 * 
                                -200*78; Ll*39; Pl*20 Tit 811 (a) 0-2 I                 Sandy silt                            11 J. 8             11

• 7 9G 500 ,, * '* 5 1,. Jx 1o-(,

                                -200a6S; LL*18; Pl*2 Tit 9G   @      8l-9l'            Calcareous sandy clay                  96.9               20.7             97       500            1. 55              I

• r._J,'(

JO-(,

                                 -200a66; LL*32; Pl*6
                                                                                                                                                                      -r, A Tit  96  (ii)    8}-91'           Calcareous sandy clay                   95.7              20.3             96       500          26. 90l'r            7.. G:do

• TII 99 @ 8-9~-' \.leathered claystone

                                 -200a89; LL*40; Pl*20                   99.8              18, 5            95        sou           0.22               *')

• 1:( I 0 -7 TII I 00 @ 0- 11 Very silty sand 117.5 9.7 98 ~00 O.)ll 3.7xl0 -7

                                 -200 ... 1,1,; r I*NP TII I "'     (u>  0-2

• Sandy, clayey silt 1 l 2 * '* 12.9 95 500 o.Go r *

                                                                                                                                                         -'  nX ,c-/ J
                                 -200NS8** LL*22** r1a6 TII 120 ~,) 1-2 1                 Sandy, clayey sl It                   100.2               , ,,

• 7 95 500 0, 11 I. 1.-< I0-7

                                  -200so69; LL..,211; Pl*6 Tit I 22     ~ll  '1-6 1          Sandy, silty clay                     , rin. o            15.~             9G       500           0 * '* J
                                                                                                                                                         ,,.:>xrn-7
                                  -200a66; Lla25; Pl*8 l II I 73 ~*) I - 3

• Sandy, clayey slit 11 O. 9 12,6 95 500 0.5G ),/L<ltl-7

                                  -200*71; ll*23; Pl*7 TII 120       (i>  6-7'            Clays tone                             9'.!. ,,          2).9             93        500           O. 1:?               1.hlll-7
                                   -200 ... 09; LLa~l; Pl*24 111111\~6-7*                      C1,1ys tone                            93. I             22. 1            91,       500           o. 5:!1":             :,.O;<Jll-/t
                                    -200..,89; LL*'1l; Pl*'t

• 1,5 pll sulfuric acid 1 i<Juor use<l during percol.1tlon test Interval.

                                                              - -------**-(133::1)        NOll'lfl 313
                                     ......                          l                                                       .
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I 2 1 i.,. C,

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11o1.I,. I ti l ..,le llol* 9S &.>le 9 7 I llole ..... 99 liele 100 Kale* ltl 102 lole 101 i aa1.I 10.

                 *tl.!*5624       11.,-5.2, :             jU.!"561G       ~     . U.*56ft.

i

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El.*5621. n.-s,i, ~*S6ZO tl,*56)2 I El.*S6l&

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     -~
                                                                                          !                                                                                                                 ~JS -

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                                        '                         ---..----------~             -*--------*-t---~-                                                                            'lK:-'f~Z . s.>>
                                                                                                                                                                                               *100*10 U.*H
                                                                                        .i                                                                                                    Pl*'.I wc.. s.2:
   --t6U                                  -iio2'00arf9'"- - -- --    -* - *-------*---- :-**------~ - - - - - *

• s.u-LL*ll PI-4 I

t- \lt-1.0 w I 1-w t*-

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....                                                                                                                                                    IIC*l,.7                                                   ...J l&I
                                                                                                                                                        -200-1, w

U.*lO ! PI*I ' S*IO IIC*'.I.Ji

                                                                                                                                                        -too-e1 u..;.u *.-                                          ~MIS Pl-6 S'80
                                                                                                            -loo-I,. '

LL-60

                                                                                                          *-H->>---~

IIC*ll *.S I l,_

                                                                                                            -200-73

• FIGURE .C LL*26 Pl*IO LOGS OF EXPLORATORY BORINGS S.59S (CHEN & ASSOCIATES)

WHITE MESA PROJECT

( .L33:f) NOl!'0\313 I

                                                                                    ..."'f t

1"' 1 i I f I I I

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a.,.* lZl hie lU lal* 1:Ui **** *124* lol** l l l ' lol~ lU 101..: l21 ; hle l21 n.~sm ll,/-lS10 t1.*.S)6t I 11,*SSIZ. 11...ssu, n.rstu. tl ..*SUO * !l.*SGIO I I

           ~--*-; -----'------,

I

  -~                                                                  f ,I                         ,                **

• t Hell - ** * - * ------- * - -

VC-..D  ! i -~oo-691 LL*ll

                                                                        **-.r-r---                                                   >>s-*                0                                             ()

1 I- 1-

                                                           -----r!.111-----~--------*---- -------- ... ---                          H-1&-* ** .. -- W 6-                    -.:7m;a,**                 :, w
                                                                                                                                                    !:                       i.i.-~           -200-90 le.I la..

J?*J4 i  ; Joo-11: U**I' d U*U Pl*Z4

                                                                                                                                                                                                          ....:::c I-
                                .--~!°""'. -*-- :,     *f *1 - ~ ---                               ~  ---**-*-**                     ~--- - -

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.....                                              ----*,' - - - -    - --r'--                                                             ~

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                                                                                                                                             ~

WEST: BORROW AREA I-

! Pit' ' ~

>     HH   1----------    *-f-,A* ---
                                    --- *...I                   ~ i- -              'I                     ----*                           .J ------------.
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U4S* SSO--*

                 ~

SOUTHWES1' BORROW: AAEA

                  ..                                                                                                                                                             FIGURE LOGS OF EXPLORATORY BORINGS 7

5SU (CHEN & ASSOCIATES) WHITE MESA PROJECT

I LEGEND: I S 11 t (Ml), sandy, approximately 60-70% s 11 t, fine to medium sand size, slightly calcareous with depth, slightly moist to moist, reddish broo:.rn to I light brown. Sand. silty to .;;andy silt (SM-M'L), fine to medium grained, approximately I 50-60% silt, slightly moist to moist, reddish brown. Sand (SX), silty, fine to medium grained, approximately J0-50% silt, some scattered gravel, slightly moist, reddish brown. I Clay, silty to sandy silt (CL-ML), approximately 60-75% low to non-plastic fines, fine to medium sand size, slightly to m"derately calcareous ~1th I depth, slightly moist, light brown. Clay (CL), sandy, approximately 60-75% low to medium plastic fines, fine to medium sand size, slightly calcareous, slightly moist, reddish brown. I Clay (CL), highly calcareous, sandy to silty, approximately 50-75% low plasticity fines, scattered very hard lenses/layer, dry to slightly moist, I light tan to vhite.

 ~

Weathered claystone (CL-Clt), approximately 75-90% medium to high plasticity I fines, slightly.moist to moist, gray-brovn to greenish. m Claystone bedrock, slightly moist, greenish gray to dark gray. I 0 Siltstone bedrock, vell-cemented, very hard, gray.

 ~

Claystone-sandstone bedrock, lightly cemented, generally grading coarser I with depth, fine to medium grained, slightly moist, greenish gray.

 ~    Sandstone-siltstone bedrock, lightly cemented, slightly moist, gray-brown.

I rn Sandstone bedrock, fairly clean to silty and clayey, vell cemented vith depth, fine to medium grained, scattered conglomerate lenses/layers, slightly moist to dry, tan to gray. I P: Disturbed auger sample. I NOTES: (1) Test holes vere drilled on September 19 through 21, 1978, vith a 12-inch, single-flight, pover auger. (2) Elevations are approximate and taken from contours shown n Fig. 1. I (3) No free vater vas found in the test holes at the time of drilling. (4) WC* Water Content(%);

      -200

• Percent Passing No. 200 Sieve; I LL* Liquid Limit(%);

PI* Plasticity Index(%); NP* Nonplastic. I FIGURE 8 I LOGS OF EXPLORATORY BORINGS (CHEN & ASSOCIATES) WHITE MESA PROJECT I

RZ?0?-7 s :::: s:::::: :::: :; A:;J :: s :c:1 s::::*: Ca:r.~s and Moore . January 17, 19i8 0997J-Ol5-l4

I I I TA8LE OF CONTENTS I Pl ate No. I A-2 Unified Soil Classification Systen amd Graphic Log Symbols I A-3 A-4 Boring Nos. 1, 2, 4, 5, 6 Boring No. 3 I A-5 Boring Nos. 7, 8, 10, 11, 13, 14 A-6 Boring No. 9 I A-7 Boring No. 12 I A-8 A-9 Boring Nos. 16, 17, 18, 20, 21, 22 Boring No. 19 I A-10 Boring Nos. 23, 24, 26, 27, 29 A-11 Boring 28 I 8-11 Triaxial Compression Test Report Compacted Core I 8-12 Triaxial Compression Test Report Silt and Sand I I ii I ii I

1 I

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l**:11 I ,,.o '" **,....t ,. ,* -o I *O*f '**" .. ..II SAP<OY SOILS SP

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CL GIUi'-[0 SOILS ANO CLAYS .- ~;tr:!{>,.-: , . . . . h .** ,. c1..**1 l*t.. , ** ,,. 1,,f.&* o****rc l*t. "I .... o*t***C OL 1- I-~

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I l'IIGHLY OillGANIC SOILS PT lllt"ar

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                                                                                                                                                                                       ...._____,._..., _ _.._,.,_,_IJl"":l!I...., _ _ _ _ _ _

I 111-!il\~'li:tt~N

                                  ;.~                                        1              "

f§

                                                                             )
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                                                                             *             "',(

I.***

a., 4.i

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j w I,  ! J I.I.

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• 1

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C>,,...~ I ~ f~

                                                           ~ t" f I       ..,;
                                                      .;,                              0

(/) ~ ti U1 '*( l  !

                                                           .. , i J5            *-~ '1 I

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                                  ~ ....:a
                                            ¢~

V'I w j (~ {; ~r; 1 ' ' * .,

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                                                                                 ""'n:
                                                                                ,,J .. '

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                                  -
                                  <t        j,i,                    *" ...

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                \ --il I

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                  \  !

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                         \\

'.I \ "' I " 0 I

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) t:. ,.,,

                                             \.'

I I f ~g_i~ee:.'s_R_e__po_r_t___________ f,econd Phase Design - Cel I 3 faillng~ Management System I I I ........... -*----------------- hite Mesa Uranium Project

.,: landing, Utah I

I

                                                                                           ~*t l~e;g~Fuels *Nuclear, Inc.

a urii;i JDl41illf:i 111~11ttiWNiirun*,

• 1:.,

f *nver, Colorado

TABLE CF CcN* ~~TS Test Pit No. 4-1 4-2 4-3 4-4 4-5 4**6 4 ... 7 4-8 4-9 D4-*1 04 .. 2 04*-J

I

  .a.T~ 9c~.lN,_.____._ _

TEST PIT NO.

O:tNISMEC. _l_,._::.._-_-'_3_:_

1 ROUND SURF..t.C! E:.: -;;'ti.. Oc?T,- PROFILE tFi:T1 f "::7)

                                                 .r
                                                  /*)
                                                       <'.                                                               .!. 'r;
                                                                                                                                               .,I....
                                                                ~!:: d i L;:-. s: i f: re-:: s i:a ':",Cy s :. l: .

rf - Cr:- :1 . Ro o C S Co ci e ;: : n

                                                                                                                                                                    ,~"-~"'"

I  !. . G .

                                  .~*;.}*

l*r;*7.*

                                         . .         ('     .

l.3' 1 - ..I -- I 2.C .s) . .. s). V~rv s:~f: red-~hi:e sa~dy si!:. D:y. Very calcareous 2 s) (( J.

                                                          ...                                             2.8' 3.0

(' Sv::-oedium st:1::

                                       .,)

red sandy s ilc. ~.o ist,

                                                               ~/screaks of wni:e.

4. 1) 5~ Slightly calcereous

                                      ))                                                                                      3                                    4 I 0 11
                  ~     ('\

_, * \,,J ss A 5'-5'6" G.O ss

                                                 ))                                                                         -----

3.s~, CaC0 3

                  - .o
                                   .SS
                                         . ss*

8 .0 .. 4 8 I 4 II

                                   -~)

9.0 s *, 9.0'

                              ~--          --                 Very sof: greenish gray claystone.               Moist, 1(.., * ()        - - ---I                      t.1eathered
                                -- -- -                                                                                      5                                 10'4"
                                - -                                                                                 Ccns!scen:y of soil bu:

..:

• Q -

1---.

                                          - -                                                                       i:'l.:a::: laye!:'ing 1 (')    -1 t'1
                               - -                                                                                           B                           - ~

I I

• fl 0

11.0 a

                                                                                                                             , . .,c;:;., .***    Ca CO 3
                                                                                                                                               ,.,..,..;       I.

• c:........

                                                                                                                                                                                  ~    - -

              ~.
          -  °:'

TEST PIT NO N -3: 9. 690' PROFILE OESC~IPTICN .. ": . (j "Sa::ie as a::iove"

            -                --_J
            ---~                   .*I 1 ':; :: I So:: yellowish b~ovn sancs:one.      Weache~eci
                                  .* I

15. 0

               .   ~ . '  ..                                                                       .

Ri?ping beco:nes c:.::icu..;..: 16.0 16.0' Boccom of cest pi: 16.0' TI:S! ?IT ~o. 1..-l Sn:::::- ~ v: -

I

     .a ':' £ 9 E:;.lN, _._,_'...-.._..'--*--
                                        ,                                     TEST PIT NO                 -- -

o. C ~INISHEO: -

                                                              ?.e C S a:'\ C:: S :. ~ :

• roo:s to depch DT :1 "w /

I l.C 4*.rr.*-*~..

                                          -)
                                               . r    . ..

I -

                                                       ).
                       .., ('\
                                             '    . *( It
                                                   .     -                                            ., ('\'
                                - .Jr A              2'-5'           BAG
                  - 3.0                              ff.

Medium dense red silcy Sann.

                                                             ~o is:.                                             2. 3:; Caco 3

l 3' I - 4.0

                                -         .[J J;

I - - ff "ff.. s.o I - - *.y *.ff. 5.7' 2 5I8 11 JAR I 6. (I Sof: yellowish brown

                 -    7.0
                                                         . san=st:one I*.*.* :>*-----------------------

1 7 .O' 3ot:t:om of test pit 7.0' I - - I - - I - - i f z:,Eaur ,::;;:.s ~r:c..::.~.  ?~7&-622-C  ?!! NO. S::: : : :. C: ,

I

• I ... *

                                        ~

TEST PlT NO .

• FINISMEO: 1 /' - 1::.~

OUNO SURFAC: EL.: - : 5,52

                                                                                  -:~c  =~,*

N . . . . ..J-,--*- E-:.s;; .950' OE?TM PPOFIL~ OESCRIP TION

                 !FEHi JJ *. rr
                                                      ...---:   .  ~e~:~~        dense rec sandy si:c. Dr;;. Roo:s to de?::h
                                                                                                                      ~o.

I  !. . I;

                                        'f.f. JS
                                       ,.,...._ *...--.                                                 l. 3' L                                                                                                      !.       1t 8  II JA:l I    ..,     ('\
                                                    .. ),\.. .*

Medium dense rec-~~ite sil::y s~nd. Very c~lce~eous A 2 '-3 *.:." BAG I 3.0

                                     *.Vi. : .: : . :

2:.6~~ Caco 3 3*3 I I5578 (.. 0

                                 ---- -                           So:: greenish gray tc yello~ish brown claystone-                       2        3 I 9" sancstone. Weathered 5.0                                                                                    5, I) I I                                                                  Bottom of test pi:

5.0' I I I

            ~=-~ .....C:                                                                                                         c**---

I lo.\ rE aeu-'N' ' '* :. '=

• TEST PIT NO. t.-:.

TcF1NtS11EO: 1::- 3:

                                          -    -    ""'I .. f            N_.,,     o i!..('.,      E..,..;, 1 )
                                                                                                                   / I *::

30 I

   ,C~OUNO SUIIIFACc E:. : - ;                ix -

Et.!V OEPT11 PROF IL: OESC=!1PT1C111

      !FUT)          !FHT)

I -, - ~=~i~= cense rec sancy s il:. ........ J. ! ;".:.. 15580 ('\ -*~)

                                            ,, ),.

ff t:-::. Roo:s to de?Ch I

• r - .,,-

I - 2. I)

                                        . f)
                                  /.~ : :--~i:_**~j                 De~se red-~hice sil:y sand.

2 I: II s:i 6n:ly calcareous. Dry 1

• l""

                                                                                                                                                                     ..J ** :.

I - 3.0

                               - .:.*s(:._: .* . _:.                                                           2. 7'
                                                                    ~edium dense red silcy sand .*
                - ---.fs1/.\

Mo is: I '4 .o I ...-

                - - . ' :. *. ss:                          ...

55i6 5.0 II - - 6.0 .. ~~.: J I - .. ss *_ ..... . 2 6' JAR

                -    7.0
                                 .... : .. ~ ~ . .
                                  *. ~ ~ ._:

11 8.0 8 *QI

• J 11 ;;;;,_

     --~,      -     9.0                  I       t        **'

Sof: yellowish brown sand-stone. Weathered I - 10.0

• I

                                                            ,.* I I               ...                                              I
                                                               ,f l!.. 0         ...         ...        .

I - . ,, - . . . 12.0 I ~ . 1~.o Bo::om o: ces: pie 1 ') ,.. ' ~RGY T!S! PIT ~O. ~-~ S**---

                                                                                                                                                            **--. ~   o: -

I l o.... -:-, seu.AN * *- -

      \TE FINISMEO:           -     ;. ..           .,_

TEST PIT NO --* 1c:~e~No sl uR:;:1=~ =~I= - : : - :: tF::TI IFE:Tl PROF1LE I -_1_._o~- ..__ --:s') .-

-:o. D:.: .:: ..,..

I . . I--,~

                  -      2.0 De:-ise red s il cy sand.

D~y. Sligh:ly calcareous

                                                                                                  !. . 5 t l                  2'
                  -             - .*))   . ..
                                       .* . . * . I ( *.:
                                                 .. . ., )
                  ----~  3.0         .
                                -       .(
                                          ) )

(

                                    . . .. : . : :..                                                       A              3 I - .,:' I    BAG
                                       .       ; .',      . l) :..

(( .' 3.8' 4.0 ** * * 'I.

                                     *.. cs**. ,: .:..... :            Medium dense red silcy sand.        2                  4'
                                            )
                                                               \.
                               - .* . *. *s"c" ...                     Moise 5.0        :_._*.   .-:**.>:. ~.':                                        5 .O' 11                                                                      Soft yellowish brown
                  -     6.0
                                       . *.                            sandstone I                                                           ... : .

1

                  -     i.O 7.0' Boctom of test pit
                 -            -                                                7.0' I

I -**-- - ,-*

v.:.-.":l

                             .,t,,,,i.,.--~*':"                                                              ,. u.
                                                                                                                      .:.-5            l 0: ...

TEST PIT N 0 .

FINISHEO: 1 1 >:.*g:

  ;!QUNO SURFACE          E:.: ,.., : : ".' C N --:* ~  o~., '      E-.,      (iI I
                                                                                                                 ~

I PROFllE

                                -*         \

.*s* . ...-;_ .

                                                                 ~~~i~=

s: ... s:i:: reci sa:1dy

1. 0

                              .-~ ....... , .            ...

2.0 2.0'

                               ... ..*. Vi ..                    De:1se red-*..;r', i:e s :.l: y
                                          ......                sane. Dr:1, Very calcareous 3 .0

.'))

-::.* : l 3' 1--.;.._--l; ... : . : ~ ( . :

                              . ... . . .

• 1 .

• -{*{ ........ -.: ..

                              ... J 1, *. . . .                                                     3.7'
          ~-1.._0--1*.: ..
                                             >SS *..
                                                                ..ea..1.um dense red silt:y sand .
                                                                \,(                                                    A 3:; .:aco) 4  I       BAG
                                      ...       :*              ~ois:

• C (, '....... '. :

5.0

                            .. ) )
                                                   ....                                                                2           .-

4 :; I JA..-l

                                  . . ((                      .
                            *....... *. ) )

6.0 *. \~ )**. :_: . :. 1 - - - - - - 1 _.... **. . . *.

                            *. ::_ .' '.. .- ~~ .'.

i-,--;7...;..~o-al:_... (r} ) *..* ~'. >.: .'

:*.. :* ( ( :**

8.0 .

                             . : * . .. ) ? .. *
                                    .' . . . .. :                                                  8.0' I ..... :J
                              * . 1 -:
                           .* *...... .:.1
                                                 . . .*         So:: yellowish brown sand-
                                                                  *--                              8.5' Bo r:: : om o f c es c 8.5' E~RGY FUE!..S ml'C:.EAR R.~78-652-C                                                                        TES! ? !! NO. l.-6     c:**---  l O: l.

I OATE SEG.1.N,_:_:_ * : =* T:ST PIT NO .' - - TE,:INISrl:O: l':..313: (;;:IQUNO SUIUACt E~: ...,:: :: :. .:. ' N -=~- ("11~' ......__...........__......__ E,_: EL.~ V OESCRtPflON tF::il l '

                                                 ..                             s:i:: rec sand;: s l J ~' . .                 r-_ **
                                                                                                                                                ;;o.
                                                               ""* : .         Roo:.s :o cie~:h 1.*;::*.~-.
                 ---- 1.0

.o , 2 .0 I l ...., '

De~se redish-....~i:e silty sand. Very dry. aialky. Very 3.0 ca:ca:-eous 3.0'

                             ,.. ss ... *.

-0.e-:: i!..!::1 dense red-._h ite silt:y

4. 0

• sane. Moist. Ve:-y calcareous 2 4I JA.~

 ,._                     _,, ... *.. * *. ) ).'
                                 . ... . ..                                                                                            A             3'6"-6'        BAG
                                *. *. ~) .. :.* *....                                                                               29.77. Caco 3

5.0 6.0 6.0' 3 6' JAR

                                                              ~nse redish white silty sand.

Ve=y dry. Cnalky. Very calcareous _1_.o_ *_-*; . . ..

                                              *.* s~*. :  '
                                .' ss *.*.- ;... :
.,.____________      8 .0         .. * . * * *
                        ~ . ... . . r' (* *.
                              *:     .     .    . ) }    ..
                              .: ( . ... *.

( 9.0 I

                                     ))*

• o '.

                                                        ,*                                              9.0' m
                                                       .      Sof: yellowish brown sandstone I 10.0                                   .
                                                                                                     , n ._,n'
                                                                                                     -V*

Bo::~c of test pi: 10.0' 1 - --Ts- - - - - - - - - - - -,.**o.-,_-,-s*.~----=-*.*

    -u-,i,ry

..~!:.o\U Ft'.::.- ~rt! CT.2AR R.'178-682 .......

_._.-_,-_ ~_'T'_ ...

                                                                                                                                             -~           - lo-.-
                                                                                                                                                         ..        ~- -

TEST PIT NO I N ....,.,_

                                                                                      ". C .... o*
                                                                                                . . ~=i~'

p.11ouNO 5UAF 4Ci E* - ::; :; ;; C I lt.lV I

  ~---..------J~--_

fHiT1 l'ROFILE c-:-\1-".": 0~ SC.~1P r1QN

                                                       .:_~-;~------------------+-c:-.:.-,-r:i-*--,-..-,_---D-:--?_:-_::________.
                                            )                         !-4..e: ~~::i s: 1:: red sand;,                              -*-- --....::::...:. _             !".:?::
                  -                                   *.. :* ,        s :. * : . C:- :,

• F.o o: s c o de ? :: 'n c::.....

  ~,_  .._ ..________     , ,"...,,-,I  ~
                                                 *.       () ~.:. .
                  -                - *. ss *-
                                                         **s ~
                                                                                                                    ,    1":" '

J  !:k:-ise red sil:y sane. lr.y. l 2I

                                       *.,Vi* : ...                   Some wi:h white streaks
                                   - .            : .(<                                                                  ...

• f ) I 2* I 3 * ()___,::: ss ....... :.',

 '               i--.;r...;;..
                 -                 -       ,.: ..... :.)S.'

L.-, o s e red s i l c y sand . Moi.s: Some w ice s:r ~aks A 7.2:: Caco 3 3'-6' BAG l.. 0 ..

ss.-** .....

538~

                - 5. 0 - .*<*.:** ,. .. *s(*j              . . ',                                                       5.0' 2                  4'5"         JAF..
                                          *(r       ...       * .. Dense w"h it ish red s ilcy
                 -                 - ... ! ) *. :* .'.....

sand. ~.Dderately calcareous I 6.0 6I

                                            .        . . s'*:  )

3 JAR __,_._a___... ...5S .*...... ....:....

                                  - .... ...: :.*...       s) ..  ~
               ..........a.....o~.*.:ss.:**.**.:*.~

• sr.

5380 9.0 9.0'

.. ~

Sof: yellowish brown sanciscone lQ,O 10.0' Bonom o! :es:: "I* . r**

               ....                                                             10 *QI
                                                                                                                                !!S7 P !! ~C. 4-8              -- . ,

S**--- ) OF !.

J.1E. .. :i :~:. **~::2 ____.... ,. _ __ .:...:.-~,---~ TEST PIT NO.

F.NIS,.EO: C,.. EL~ E. ; h V ?..._ ......_~.....-....:.._a....--*...*-*____

I

 ~CUNO SU-IFAC: EL :-_..              5_5"-?-'"---                                         E- "

OEP'TM (FEi:TI l PROFILE OESC,HPTION

                                                                ~e~i~c s:i:: rec sandy s i l:::. DT:1. Roo::; co de?::h

(( . ;..._;,.

                                  ., '.                                                            l,.,   I 2'

2.0 )) De:ise red s il :y sand. Dry. ~nice streaks. Sligh::ly

                               ...s) ..

I .. <,**.~)*' 3 -....a_....;... ca.lcareous 3.0'

                         ~
                                   <,< *.*: ;':.               S::i~: redish whi:e sandy
                                . i.           *     .*

.*.::.-s)*: sil:. Dry. Very calcareous L.

• 0 *. *. *c, s.... :*: 2 L. ' J.l.2

-----...--------. **: :*i*                           <X   .,:

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _..;.;;;._..i 4 .3'

s:, :*.'. :*  !'iecium dense red silty sand.

Mois::. Some whit:e streaks. A 4 1 -8 1 BAG 5.0 24~ Caco

                               **           .::**)*~-         Slightly calcareous                                           3
                               .- *s ( .. .- ..=.
                            ... . . ) .: .         '       .

6.0 <('. *6

• 0 I

                            .;,~.:

• J

                                                . . *.        Den3e redish whi::e silty
                                      ,I  *   *     ****

sane. Cnalky. Very calcareous. Dry 7.0  : s~: 3 7'

_ )s ..

8.0  :. .. < . I

                                                      <.*                                         8.0' Very soft yellowish brown sands :one.        Weathered o.o Medium hard yellowish brow~

sands cone 0.0

           , 1    .-,

l!.. O' Sottom of tesc pi: 11.0'

I OATE IEQM*:' ,. *~* T=ST PIT NO  !..,-- AT: FINISHEO: 1 1 ' :_ l;:i~ GRCuNo suA~-'Ce e1.: - ---- '

                                              .. , ,  1 N _-:

• c ,a~

EL! v PROFILi

     !FEHi r~d sand:,, si~:.                      D---**
                                                              ~.: .

1, . . . . . R.ooc s to cie?:h

1. 0

                                 '     . . ..        ~  )

1. 3'

2. 0

                              . 'S ~ *. '. : .
                                              *. *J>-:j       ~:ue red sil:;, sand.
                                                              ~* :- *: *                        , . 0'
             ~..:..:..:::-.._..r--."'""..:-:-.-;_----
                                              .   . ) ) *,    ~~cium de~se rec silcy                          l      -
                                                                                                                     ., r / n
                                                                                                                          ~

sa::c. ~.o isc ss1, 1-----------1 3.o  : ) s* . *.. s:--1 3'-5' 3" s:-:e!by

                                .'-:: .')):

4.0

                               '*. ss                                                          l,,  1  I     2       4I2 11     JAR
                                ----1
                               - ---                         Ve-::y so f: gre!nish gray 5.0                                        clayscone. Mo is:

6.0 ----* ' 5.570 i.O 7.0' So:: yellowish bro1oo-n 3 7 I 2" sancist:one 8.0' Bot:t:om of test pit 8.0' I I

I T~ST PIT NO. ~ ~ *.. ~ E.....:, . :-. : ; ::  ?. . -~ -:: : ".: -....: : : ::

            *= FINISHEO:        ~

2

                                   / * * . ' :j *
          =IOUN' SURFACi Et.:_-_::_.::_-_~_'_

E-.., ., ,: :: HEY OE"1'H PROfll.E OESC.t1PTION iF::":', f F::TI SA..?.:.:: ~C. t '

                                                                     ) ',      ~==i~=         s:i:: reci sa~cy silc.

s*s *-

                                                         ..                    C.r::.       R..,o:s co de?Ch
                     -      1.0
                                                ~ (),  . ..      ..
       ;570                2.0                  ,-:.__,' .                                                                   2.0'
                                         * . *.          .        <: ( *.
                                          '          .         .    } '
                                                                          .. i::.e:".se r:d S:rea~s of whic:e sil:y sand.        Dry.
                                           . s(** .. *. :*

3.0 *.. : .* .* . : .. 3.0' 1 3' J.H

                                         *....                    )) .         Medium dense red sil:y sa~~
                    -_4_.

I - o__ : :S s. *. :_. :*:*

                                                                               ~ois:.          Sc:reaks of whic:e I                  -             - .......
                                            ~  ..... *. . .....

s*) . . 5.0 I -

                                       *.*ss**:
                                        .-: . : *..... :             /                                                                       ST-1                     5'-7'                    3" Sne:.'Jy 15566                    6.0           .*.. *...* .*. S). ..
                                                 . . . .... .                                                                                   .'                            6'                       J.\.':l I
                    -     7.0
                                  - .:*(s**.
                                             ..  }
                                                             *.*.= .. :

7.0' ST-" 6 1 -8 1 3" Shelby

                                      *. *:*. .*: :_* 5S.*:                   De~se red            5 ilc:y sand.      Dry I                         8.0         .... * .
                                      ..'() () ' .....

3 8' JAR II (; . 9.0 * .*.'.* ._,): i-------i .... *.

.. sc *. : :.. '.

tI - . *. >* .... : Q 7=i I 5562 10. IJ ....... So f: ye1 lowish sand~:one f - l!.. 0

                   -                                                      i                                          -- . :,
                                                                                                                     , 1

• I Be : :: 1Jm o f c: es : pi::

l l. 5 I I . :.:. _

'C'"':'"!Jt<V

_.i,-:\U *

               ~~-:-,

C' V * - S ' *-' .

, . C:

I

 ~:*N*:-"".-~-~-~.:'!':'!11:---------*T*E-S*T-*P*l*T-N_O________----F*,E**.*:i-:"4*--.,;*,...*;*;*::i-.*.*.-~--=*~*-:?*:-:**.:..c*c*::...

0-.  :/!5/2:

a FtN1S;1EC:

....... UNO SURFACE EL.:                  ,.., :: ::    *a
                                                                 ,            N   . ., 3:.9.;'..,:,

I ,- _--=---=._ c:...,_".." '::-,

                                                                                                                                 ....." "_.*"l* '

EL!V OEi>>TH PFIQFll.5 OESCRIPTtQN Mc M/\Rl!.'- LI-E-i-l-!--1F_E_E_r_,-;..--*~- **-.:-_--.(-<.--;---------*---------+----------"--------i

                                       ~-             .J.            :-i.ecit.:::: s:i::: rec sa:-.:iy sil:.                                      S.!'r,,*-:   ~                o-:-":>--..:   r:*?:::
              -              _ .

• c:

                                    * *J
                                              <. *-              .-  Dr .,.

• Ro c::: s c o ci e :i: *:-.

I I * * * * *. I 2.0  :.. ,,;..:.. -."s <-: 1. CI

                                  *}5 [;,:*:.-:               :-~,   De:-:se rec si:.:;;                              Dr::.
              - 2_._o_ -*~~.s*:.:-.._:*:i.:*.

S.l:1c.

                             -    :             * ..                Some root:s I __                             ...
                                        . *.          :. )) *.

D~~se red sil:y san~. Dry. Sc::-ea.~s o: ~nice. S~ighc:ly

                                                                                                                                ,   '7 '

1 2'

                            -                                       ca~ca:-evus I               3.0

• • s*~_-: .. _:.':

                                                        ~(
                                 .     ..     ).       .*.. *.

I - **.* .

                                               >:ss;                Medium dense red sil:y sand.

1 1 I s:-1 3'6"-5'6" 3 "Shel"::, y 4.0 .... Mois:

                                  . s( . ..
                                      *     )         ** t .    '

I 5.0

                  ..........- i
                                  *..              .'.'ss.':                                                                                            2                           5'        JAR          i I

I 6.0 l

             - *:.~**s:~..(.<*.* *.

J :*: ......,

                                        ,* .:.~

I So f: yel 101.*is;, bro1o-n sand scone 6.0' I I I - i.O I

                                                             ..                                                             7 .O' I - -

Bo c : om o f t: es t p i c 7 .0' I - - I I

                                                                                                                                                             ,.,"I
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I SECTION 6 I I TABLE C-1 I

SUMMARY

OF LABORATORY TEST P~SUL TS I CELL 4 I I I I I I I I

1

---

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SUMMAnY Ot LABOR A TORY TEST Cell 4

                                                                               --------                     nrsuL TS TECHNICIAN                                                                                             PROJE~T tlO.                                              --

APPROVED BY DATE -*--

                                                      ~flOH NATURAi.                                     PERCENT     ATTERIIEAO lUTS                 SOIL OR O[OOOCK I

NATUIW.

                                      ~**

MOIShJHE (Jfl'I' PASSINO r,ot.tMEIJTS SAMPLE NO. COHIEHl Oft,!>IJY GRAll(L SANO 1,,,, NO 200 llOUIO TYPE SIEVE LIMH f'\ ASIICIJ'I' INutlo.

,_...lll 19    @   0-3                                                   70      23                 6          '.1andy clayf>y silt lll 23      (d  1-3                                                   87      48               2-1         Heathered claysto 1e TH 23@ 6-B                                                            96      61               30           Clc1ystone Tit   25 ld 1-3!    13.13                                           57      26                  g         Sandy cldJ 111 26    ld  4~-5  15.3                                            91      41               20           Heat hP n*d cl ll\> to w 111 !.8  (cl 0-~   l..:'. 7                                        n       :!B               lU        t *..111dy     cl<iY
 ---*      :9                                                                                                   'iandy clayt>v 'iilt.
                                                                                                      )

Ill ld 2-) 8 * '::> 5') Fl L 111 4B (i 5-~l tiS 30 1 ',,rndy clay TII 49 (ti 5- 7 71 25 g '.;andy clr1v Ill 49 (d 14-15 55 5 Cale.sandy silt TU 58@ 51-6 12.5 75 35 11 Sandy clay HI 76 2 0-1 4.5 78 21 5 '.iandy '> i 1t Tit 76@ 91-10 4.4 26 UP -- S i 1 t y

• 9, *,1 v el I y s IHi 77 8.6 71 30 15 Sandy clay

   -111          @  7!-8 rtt 79 ld 0-1        4. 1                                          83      20                  5          '-;and y s i 1 t fll 79 @ 5-!i}       5.5                                           41      NP                - --         Ca le. *, 11 ty sand

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I I ATTACHMENT 2 I I I I I I I I I I I I I I I I I

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I I ATTACHMENT 3 I I I I I I I I I I I I I I I I I

I MAGNITUDE SCALL'lG FACTORS FOR SOIL I LIQUEFACTION EVALUATIO~S By Ignacio Arango, 1 Member, ASCE I AesTAACT: Energy concepts are applied to the conditions that are likely to have e:usted at distant hquefacuon si1oes in past earthquakes. From this. magnirude scalin1 factors are denved that reftect field cyclic strength I conditions. It is shown in the paper that the factors are independent of the field acceleration assumed to have eltisted at the sites. and an: only dependent on the m~gnitude-equ1va.Jent number of cycles relauonstup These factors are compared with others based on laboratory cyclic strengths from Seed and ldnss and on stausucal regression of data from field case histories of liquefacuon. The factors den ved based on energy concepts are I similar to those derived by AmbrL~ys based on a stansucaJ analyses of extensive liquefaction data. It is con-cluded that the factors derived in the paper based on energy concepts. or by Ambraseys. appropriately represent field conditions and avoid the limitations and extrapolations of the laboratory-based derivauon by Seed and ldnss, and they ue recommended for use in the analysis of liquefacuon potential ITRODUCTION sure equal <o I KS<. N,. and the cyd:, ,~m ,a:,os ,nducrng or failing to induce hquefacuon under a magnitude 7.5 event.

• The first comprehensive listing of site conditions at various The authon pointed out that "one of the lim1tat1ons of the llcations where seismic liquefaction did or did not take place [previous) chart was the !united number of reliable data points was presented by Seed and Peacock ( 1970). Their cha.rt. sum- available to define the boundary separating ltquefiable from arizing the results. correlates the relative density of the soil non-hquefiable soils.** A second limitataon was its *'inability l posit to the calculated cyclic stress ratio. In the chart, the clic stress ratio inducing lique:faction in the field is indepen-dent or the magnitude of the earthquake.

Noting the scarcity of reliable field data concerning the liq-to differentiate between appropnate boundaries for different magnitude earthquakes." The firsl difficulty was alleviated by inclusion of suppl~!!lencary data obtained from the Ha1cheng (1974) and the Tangshan ( 1976) earthquakes in China; the I faction potential of sands with high densmes (or correspond-I penetration resistance). Seed et al. (1975) used the results of the laboratory shake table tests earned out by DeAlba et al. earthquakes in Guatemala ( 1976 ), and Argentina i ! 977 ); and the Miyagiken-Ok1 earthquakes 11978) in Japan The combi-nation of the field data gathered by Seed tn 1979 with those

76) to extend the data to earthquake magnitudes in two E

from the preceding earthquakes provided 1n the words of the ges: 5-6 and 7- 7.5. The laboratory tests were performed authors "a reaJisuc basis for developing correlauons between specimens prepared at relative densities of 54, 68. 82. and standard penetrauon tests and the liquefacuon characterisucs 90%. Based on the density-penetration resistance relationships or sands and silty sands for magnitude 7 -1/2 earthquakes." Gibbs and Holtz ( 1957 ), these densities correspond to pen-E The authors also reasoneci that me results could be extended tion resistances (normalized to an effective confining pres- to other magnnude e-..ents by noung that from a liquefacuon e of i ksc) cquai to 11. 19. 27, and 32. respecuvely. The point of view. the marn difference between J1ffc:rent magnitude

  ;hart developed by Seed. Arango. and Chan is the first pub-                  events 1s the equivalent uniform number of stress cydcs that shed liquefacuon chart that reflects the influence of earth-               they mducc. Based on previous stausucal studies camed out uake. magnitude on the liquefacuon susceptib1hty of a sand                  by Seed et al. ( 1975). and on a representauve shape of the posit.                                                                   laboratory relationship between cyclic tnax1al test stress rauo Subsequently. Seed ( 1979) incorporated penetration data                 and the nwnber of cycles requLred to cause hqucfacuon. the btained at the U.S. Anny Engmeer Waterways Expenment                        authors obtained the scaling factors shown in Table I talion, and the Chinese liquefaction criteria (unpublished                     Thus. by multiplying the boundary ltquefacuon/no-hquefac-

• ata). to extend the 1975 chart to earthquakes of ma,nitude uon curve obwned for magnitude 7 5 data by the scaling fa,.

8.3. tors shown in Table 1. boundMy curves for other earthquake

• Davis and Berni ( 1983) compared Seed's ( 1979) results magnitudes were obwned.

lt*th field liquefacuon data derived mainl) from Japanese Seed et ai added add1uonaJ field data to the l 9M2 chart 1n earthquakes. The compa.nson led them to conclude that 1984 In its present fonn (Seed et .l.l 1984 ). the relat10nsh1p Seed's results were generally overconservauve for small between penetration resistance and .:yd1.: stress rauo ;;ausang l arthqua.kes and possibly unconservative for very lar1e earth-ua.kes. The :,scussers found an unacceptable lack of aaree* ment between the field da1a utilized in their study and the liquefacuon an a magmtude 7 5 earthquake is as ~hown 1n Fag I. In flus figure. the property selected to ;;haractenze the soil deposit 1s the SP'T-N blo"" count normalized to .i..n effective ombined field/lar1e-scale laboratory test da.u presented by f eed (l979) Seed and Idriss ( 1982) used the field data from Seed's 1979 study to prepare a chart showing the relationship between the TA8LI 1. Magnttude Scaling Factota OerivM by Se~ and ld-- rtu In 1112 8aMd on Laboratory Simple Shear TH: Data Magnitude 1eahng !actor f'f-N blowcount nonnalized to an effecti\'e confinina pres-Earthquake Number of cychc strength M .. M

      'Mp.. Gc~b Ensr1. Bechtel CorJJ. ~ Beale St. Su Franc11eo.                    magnrtude         equivalent cychc strangltl M ,. 7-1 /2 CA 9"4119-3965                                                                          M         umfom, cyC1111 11>-

Noc.. Du.cussion open uni.ii Apnl I. 1997 To extend the clottna dace IDOftdl. 1 fmUtll requa& mull be ftl..ii w*da rbe ASCE M ~ of

• ~ Tlle maouscnp<< for cbi1 p11p1r wu ,ubmia.d for revww and

                                                                                       .,1, (1)               (2) 1, 26 (3) 0 89 I 00 pcMlible pubUclaocl on Aupt& 7. 1995. Tlus p.., ii put of 11w J.,,,,,,.J             6.7,                10                    I 13
  ., 0..1l1C.t * ~

• Vol. Ill. No. II. No.,..,._, 1996. 6 5-6 I )2

  .A.SCI. lSSN 07ll-klCJ96/0011-0929-091615'00 + S.50 'l* pap.

I I~ 51' 2 .3

  .... No. 11)50.

JOUFINAL. OF GEOTECHNJCAl ENGINEERING I NOVEMBER 1"6 ' 921

0.1 I *

                                                                                               ~*

a PERCENT FINES

• H I

I I I o.s I I I I I I I I I 04 I I I I I I I I I I' ,I I

• I I

I I

                              ~*oo
                             .. Iii   3          *

• I
• I oa PIN&I CONTENT t H, I a (I) woomto CHINHI COOi

                                                                   ,illofJOIAL (Ct.AV CONTl!HT

• I'll.)

MA"GINAL NO LIQUa,Ac*rioH ~IQUll'ACTION LIQUlflACTION I 'AH*AMIIIICAH OATA JAll'AHIII OATA CHIHlal OATA a 0 0'---------------------------- ,o I 0 10 20 lO SO (N1)10 AG. 1. fllelaUoneMp betweflft Sit. . . Ratio CeuaJng U . . ~ and (N,). Yalu4NI fo, SIity ~...... for M

• 7.S 1811hquak. .

I overburden pressure equal to I ksc and to a hammer enerty equivalent t o ~ of thac of a free fall. (N.)~. In today's prac:- uce for other ma,nttude events. the scahn1 factors li11Cd in I Table 1 are aenerally used. A criucal review of the findinp presented by Seed and Id* riss (1982) and by Seed et al. (1984) was prepared by Am-a, Magnitude scaling factor (2) 0"" s 067 I brucys (1988). In the reviewer's opan,on. '"the conversion of around acceleration rccotds to -.a equivalent uniform cyelc fomw ncJleeu any conaideration of the nacu,e of the eanh-1' 1 6.15 6., I 00 1 lO 148 169 quake around motions and their behavior. It is no, considered 6 220 I reasonable to allow the level of shear stras for a &iven maa-nnude eanhquake to vary in a deposit only with a ftxed num-ber of equivalent cycles. without .also mclud1ng some consid-

                                                                                                                                 286 eration of the distanc:e of the sue from the seisnuc source.

I .ulowm1 for auenualion. *

• Ambrueys then proceeded to de*

vclop relationship& b.ttwccn avcra,c sllesa ratio caus1n1 liq-uefaction and standard penetration resistance for diffcren, Earthquake magnitude ( 1) mqnitudc evthquabs without recourse to a sc:11in1 factor. To a, I Lhls end. he separal44 the available fteld liquefaction di&& in croups conapondina to four earthquake mqnitudc ruses 1' s 0.62 072 I 00 (6.0-6.6; 6.7-7.2; 7.3-7.5; and 7.6-8.2) and 1Wistically M-alyud the stress rauo blow counc relationship for each ,roup. u, 6, 1 I .34 I ,a I from the study. Ambrucys derived the earthquake ma,rurudc scalina facron (MSPs> in Table 2. 6 l 81 279 In I separw effon, WiUi11111 ( l 994) applied a lo&ir rcps-

                                                                                                              '                    446 I  1ion ~ h to the ftcld liquefaction d1r1buc by also sepa-rlWII diem   in cues belonpna to ean.hquabs around ma,ni-S.S. 6.0,  6.,. 7.0, 1.5, 1,0. and    a.,.
  ~ ~ l y a 3211 ~ h t y of miacluai&:au.oa were MSFs I.ha& have clean sand.a shown in Fit I. The MSfs obtained by lhe author n &iven in Table 3.

A different approteh to derive MSFs was earned out in I cllrtv,4. Tbit probi&,ilic1 of milcluaiftqcion .a. accordina

  .>> WiUilma, UIOUI the llfflt .. ch,.& of the bouadary liM fot
                                                        ,~,..-

AtUJO (1994). 1'1lt wri&er. 1nilii1n1 the field liq1.1tf1M:t1on data oblerved a& sit.a wadi the l111esa documented epacenu.i das-

I I I

                         -j I                       I I                                                                 0 I                                 J Earthquake Ma9nitude I                                    FIG. ~. Mui~ D,..._ OIi Uq..,_11on from ZoM OIi hulllnt tances. apphed energy concepts to denve MSFs that a.re in-            TAILI 4. Mulmum         ~          OIi Uctuefeotktn from Zone of I  dependent of laboratory test rcsuJts ThtS paper summanzes the melhodolo1y used and the results obtained follow1n1 this Cnff1Y*bued approach
                                                                        ':!'f [... C.W Md hed(1...}J Earthquake magnitude      I      Maximum dlatanee. km
                                                                                                                                             ,, ~

I UQUIFACTION AT L.UIOI IPICINTRAL DISTANCES

                                                                                     . ,(:~ ---*---1-**--**-*---**-*:: -*****-***

1' or data l Comp1lauon re1ard1n1 the dJstance from .a given l 230 I epacenter to the most distanc occurrence of hquefacuon has been done by several anvelligaton (Karibayuhi and Tauuoka 1975; Youd 1977; Davis and Berri! 1983; Seed et aJ 1914,

                                                                                       ~g                                         l~_

and Caner and Seed 1988) Fi1. 2 (Carter and Seed 1918) I. Minimum Ground Acc...,atione to, whtch Llquefac-includes data on i 2.5 cases of hquefaction throuahout the TAIILI I world. Maximum distances 10 lites of observed liquefaction ell\ be read on this fisure. and arc presented an Table 4 Carter and Seed I 1988) esumatcd the minimum 1round sur-hed(1W) Hu ...n Induced by Qround Shaldnt [aft* Citt14tr Ind Earthquake magnitu<ht M1n,mum accei.rauon (g*) face accelerations for which liquefaction has been induced by ( 1} (2) I earthquake shakln1 as shown in Table 3 The vaJucs of the minimum accelerations were obwned by avcra,in1 the results of several attenuation relationships (Or* 8 2S 8 75

                                                                                                            ----   ~..--* .... -*----

0 02.5 0.0) 004

                                                                                                                                      . --~--~------

7 005 I phaJ and Lahoud 1974; McGuire 1977; Cornell ct aJ. 1979; Donovan and Bornstein 1974; Iwasaki ec al. 1971; McGuire 1978. Battis 1981; and Ha.sesawa er al. 1981). 6J 6 5., () 06 l) OI 012 The charactcrisltcs of the liquefied soil deposits at these dis-I tant places are not well documented. Davis and Berri! ( 1983) reasoned that these sites must represent "soft., hiahly liquefi. able deposns neai he 11ound surface with low N vaiues and tudes and frequencies or the 1round motwns can be obtained The equation of mouon of an undamped simple osc 1llator of a high water table *

• In their study. the d1scuuen consider,~ mus m and suffness k 1s I the 11ound water 10 be at the around sl.U'face. and N1 valut10 tqual to l and 5 Seed et aJ. ( 1984) considered that thcH deposits consist of "*,cry loose sands. say with an (N,)f/J vaJue where y(I) "" mouon relauve to lite around. and i(n = absolute of about 4." Ambra.seys (1988) concluded from his studies motion with respect to a fixed reference For that oscilla1or.

I Iha& *'the fanhermos1 sues at which liquefaction wu obsen'cd should have been usoc:ial&d with N,-valuea of less than 6 for clean ,ands. and about 3 or less for ,ands wnh 1.51.- lines." lbe total energy (TE) at any umc , is 1i,en b)' the upreuaon (la) Such loose deposiu would probably have a relative density I somewhere around 30-4-0'*, which appears lo be the loosest swc encowuored in youna alluvial plian and lake depoaiu in nacwe (Atan10 1994). I IARTHQUAKIINIRGY whue the ftnt I.Uffl represcnll the le.in.tic cnerl)' (KE) Md Ule teCOftd r.rm repttNnc.t dM stnin *""IY (SI) in &he sys&tm. Tht UMIY Of IP upandinl ear~quab wave bill CU be It Mil bt thowft (HI.MUOft 1919) dla& the previout uprH" I ealinut,led ftom tcccluopui recotdinp from which unpli* lieu an tquivaknt to mt tquadon JOUtlNN. OF GIOTICHNICM. INOINIIAING I NOVIMHA 1tte I Q1

I ~ *{[L ci(t!COS w., ,, rf +[ a(l)ttn WJ 41 rr'2 i:,)

                                                                                                                            -*T-------     Ill,  i.,., J1, )()~ '°' ... 'I l-1 t.t\/1 , 0 U  *'  r ~ -.1 ' :t)fltwt *

• tMt at the end of the earthquake 1$ the sa,ne as the Pouner I amplitude ,pe~trum ()f the around ac,eltrat1on Noce that both the lunetic and the strain ener11ts ate proportional to the squate of the abitoltue IJ'OUnd A(!Ctleration. ,-; .. 1" ,..........

                                                                                                                              .J. .
                                                                                                                                                  ~.

i'C.t'ftj it

                                                                                                                                                          '"'Milli         ..        r,.

In an undainped oscillator, the luMUt eneray 1s tero at the t *.,, 'WO l()CQ

                                                                                                                                                            *eo HII J11 (H1 I)   to I muuhum d1Splacemtn1. and 11 11 at

• muunum at th* ,tau<'.

eq1.1ibl;ttum point For the ittarn energ)' of the iystem, the i'ftVtfH II tl\NI. Therefore. ,. K!.ll;tA,l(

• ot die syswim
• fti) i SE)~A:c
• total cnerfY

                                                                                     . . . . . -*-~-1.........
                                                                                   ,ao, UIIINttion .....

a, * ~ GM1Nh*** Char1Gtff11ttlu of OliMMt Lift I IMatmum K.,_1tc l'*IY lf. for l(Xauons d11t$111 from the wun:e. earthquake waves I a,e conth:ieted to btcome harmonic. the upreuion for tht muimum KE 11 11ven by I KE * - mJ * - J * - W W 2, I l 1, where W

• weight of the 1~1llalin1 mau. v and "
• its mu*

imum velocit)' and muimum accelerat10f'I, re,pectJvely, M4 T

                                                                                                "****-*-""'..,,.,i ' " *

• fundMMnw period ef the ,ysttm.

I Relation,hipt between earthquake mt1nhude. d11cancc from tht 1tenter 0f eneray releut. and lunetk: cncr1y cu be Hll mtUld for ruck mot10ns ,r vahurs of -=celtrat1on and predom Witho\U an u&emai sourcie. no real os&em1 hkt totl matnwn _,, undinuntshed .amphh,1dt of v1brauot1 M*nal darnp1n1 is a name for thtt ..:o,, ..,lu phys1;.;al tffe,a1 thll c:.>n

                                                                                                                                                                                 ~tu m.ut wa'ie penods art aviUIM>le The 11.ccleraoon atttnuauoo I  rtl11aonsh1pt proposed by tdnss 11993), and the ma,nm.Jde.

dittancc, and predominant penod rtlauonshi.ps for rock.a pro-poNd by S.*4 et al ( 1961), or more rKendy bv Idriss! 1991 ), ven kincta, and ,11a.in enertutt in a v1braun1 1y1tcm into hi.-.. dttfocauoos. shpt. etc The ume httlory of i&GCtlerauoo dt ,.,loped at M'f point 1n tht fJOWnd dW1nt an ea.rchq'-take .:onmts of

• rel.utvtl)' fftau, I can bl uaed for this purpoM A similar ,aiculauon to, soil sites 11 Jtfficuh to perform This is btcaUJe I.he fundarntnlal penod of v1bfation T depen4a not only on me 1uffnc11 of wi soil layen. but &1$0 ~ the SCNI of ,ycl** qf ¥.u)'IRf amph1udt, Tbertft'lte. ""' tht IMflltS U'll)Ul and lbturMd by the p,ofllt vv, hnM OM cycte to dM nu:t d\ar1n1 d'le $e1stm, cpttodl for an&lvUiCll
• well

                                                                                   ,11       for praclt(&l ~ *

• 1t hu bffn fow,d uitful *n potei;:h-I 1eomeu-y, and both of these may vary At ihown tn ,Fil l.

however, hmM 11.nd Jtposiu with an t,\'.1 1111 value of 4 and th1~kn1su1 of bee ween 5 m and to m 011,rly in1 ~ ' of stiffer soils underlain by rock would typically have funda-

                                                                          ,o  m ruc-&l C~UM*
                                                                                   ...<<m!I uf tRIIMtflfll piiel!CC !t1 4CIH'l1'4!tl tJw tntplat eartJ'ltt*t*tftdu,ed ;Kcctherat11>n~ lO il\fl ¢'4U!11alttH Sf*

nt111 of umform ty;;:lcs ,Sud,, *I 11.:175. "i.:,d i.\mJ (drtu 19121 nus approiM:h ii .Miop<<,d in the foll,>ll<Htl Jcnva,,oa A-: I* menr.d pertoos 1n e,..:en of O 7 $ S1m:t in ( 4) W * \/p where V re preMn11 volume a.nJ p rep-rtunu wtifht per unit volume. u follow, that the mu,mum lunetu:: ener1y of a 11ven soil deposu CM bt nprcssed u

                                                                                   .:ordm1ly, 1t will be a.U1,4mcd th.!I the um..* deptndtm enut>

that a .roll aepo11t abtmb~ ,,n be ta.ken .l.$ the eMtl:t corrt

                                                                                   $fJORdUll to U\ll ,>f ill tt'fe,.;ll ¥C: ,K:;;tl*1,Uttm . tnUIUpiled b~

lhe equivalent umfonn number (If 1;yde, ..*one,poftidin1 w the I lite of the 1iv.1n utthquue I ,..xtmum Strain lner9y With referen,e to F11 4, the d1tlerent1al of eluui: SE u i(M;:UUed wuh sheann; stresses Ii Ambrasty1 119811 i\HOt141td the reiJIHll'lihtp between urthquake ll'lall'Ht1.,1dc M'ld muunum tp1..:tt1m.il d1~* to known hqi.aefa.;11on ~, .. $ to a relit1oruh1p b*iwteR in*nutted I J*SE> r*

                                           * -u; JV unhq1,htM ll\"lnm,14411 .and encr*y Frum 1hit'>t the .tuWX Je
                                                                                   ""*d * 'the htMl pou1ble values for du t1inj;r Ju1'"'Y requinid lO        iru,iw;c hq~fag:uon                    &rOYl'4   f41luftS .

when, 1/1.

• avera1111 she# tU'ets, (i
• averqc shew m~,d"ll; I 11\d V repruems the volume of the m'" llndfr illlAft $~*.

u sh,lwn 1n Fis J. the ,;ychc suns 1n4uced m the pound by the eart.nq\l*e wave, is propornonal to 1he poumt tiirfli.t Vflfy L.... lanfM OU\fr 1nvutt1Jton h*vc 1K>lih1l1M1J m1111mum eacr11 11111,1,tt rcqu1rtd to r***' hq~flt'tton 1n 111111-al i~pt, of 1.a.u*11qo t ~i.:elerahon. it follows tha1 the scrim ,:ncray per 1um volume II t*t1* FOi' uamplt. AU"1-IO i 199.ti procnt1 .:i.mutau,., "al~ of dlt tncrp abl0fbe4 by undr~Nd t.rta.u:.JI ilCtU'ltllli in re~hmJ 1n1h'*1 hqucf~uon in 16 *lfUi .;;1.Hnrnllt.4 .;;yd1c 1,r1 'I l\* 11£, wtt.w.-r iM\llltlHG.lff Qf ,...,umum. 4fvt~ b)! u1tl lftU ..w in l 1 ,tr*n*<:ontrolttd .:ydu.: tri,u.tt,J lffii Th*

                                                                                   ... nter f~P4 11\at dM entr1, 41)iuritd 1tr.Li a fum.:uQA of iht rtitttve iftMH) of w t111 $pCt;.lfMft bi.II Will rtla&1v,ty 1Mt*

pta.,u of

• type qf lfiil t#Ml o( the frt~\itni:.y i)( h)fd1n*

                                                                                   ,_ ,,_,,....,. 11 a rcl.1t1vc ""?Y of ,~. tnt}f\ltf~ .-1>-

.*** t ~ *11 ,a I aod 41,otu pr l.lftlt vekl* it "'" IOf1iH ..... bttwttt I 4 JI( 10- llnd 2 i x 10 Ufm 1 Pi**et e,t u (1994) tep<)fttd tht rtJ\lht 1>f 17 lQfttontl to W. ,,...,...., lo tJ\I fllUWt of dM pwftf M Q i ~ . l

L lftU ot 1pt11tmtM at r*lauvt dt1u1Ut<t va,y1n1 btl~Hn T'he equ1valtn1 1Jrt1fom1 number )t' ,:hit>, ,., tr* rt1 thn ,,1

      ..E' " tM 1'll 'fht ditupattilt kl.utfa.;**.tt.*..... "'".4 fMfSY    per unit vdiumt Uf.11()

with the sun. I ,:ondmona c,ol'lfl1un1 ptH*

          * ,, IMt **uy1 fo, .,_,1,rttM at I rttauve dH11ty near
         , t),. die - enett) 1att1t4 IMtwten about O, 'I( to* 1 an4 t.-.

bit, h)fltU'lft wtth dit cy,hi: iU'Us Nlim ..:,,rrt,p,;r,Jrn1 h.* the

                                                                                                                       *a:liltrauons 1r1 T:.tt:>lt !S tan bf ..:umb,ned tn prn>1Jt+ tht. hfld dfr1ved ttrtu riu1c)ll *ltr1~$ the numbtr of qdt11 rclat1onth1p rt4~1ttd to 1ndm.:t hquef14:mm 1n vft)' 1001,e ,.and dtpo~m I 1 x 10* 1 J/tffl 1. which 1t in ttllthtly food >'lpttfMAt wnh                                              wiffl <NJ-.i ..., 4 llm tt*auottth~p is sh,)v.n m Fig , and ,n r:           tnuial tett rtawlu rtpor1.N by Atufo m 1'94 Th~.        it  ii ,-44oou,Jc to u1u:mt, h$t1r1tory ,o,u1dlr1hon1, that me (lftttt of h41;1t(1¢dol'I of *
                                                                                 ~ on Mi$fflolo11c and Table    1
    .I   s.od dlpotll WtUI llVH i.htrM:ltrlflUU ,. Uta:tt"4 111,nfi. mm,
        *'".um t,ve.. of **'. IY If au lihtWlt bq. ltlfuuon.*
        .lft , **     l -- ll'rt IMU chtrutttiltiU n.' htah ,,C:IUM*Wltff
        ,-.. lo* (1'11>* v-'w* ne11 l **'* tOntllt ~1na,u penod>.
                                                                                               *it**   1ne.*.ludecl Fi*ld cy\lht SIHf'lft.h Cl.ltYU for dfnifr !Wtl dtpotllti can bf otQiMid 1mn1 th*

StM et w n"4, <ft1 tfflftU"ltt.l dat.a tor ..:tfall sands proputed by i, Tilt tot uamplt, dean *and** it 1, r....... to WUN U'IM to hqutf)' UI of 1httt Slltt l"OIILI wktl (NJ., vat.at tqual io 4 and 11. rHpllH."11,tly The llltmn'l!JM .. MUM tMrJy 1'1,e,ef()ft. criueal cy~h~ ,veu r,11uot tor t..,.fac:uon undtr

• ma1nuude 7 J tll'Vl4uue art O 0, a.Rd O t 2. r*spect1Yctly <ste Fil I l ffor
• f(t1h,, *.,JN., * (Crl,.,...,,.tl )( N... (&l depolH1 w,"' an IN,).., equal 10 11. th* tltld itrtu ratun re quulld fQt hquefactton u, dtfftrent numbtt, of ,'.)dtt would bi thOM Jttown by cht lower Cl.lf've in Flt , mvlt1 plied by tht f*tot O I l/0 O!' Fitld c:yclu. 1tttu rauos rtrqmred for l1que fac:Oon of dtnser san'6 at 11ft (N,)., vall.tf ,Jf 11 ut sh,1-..m u the 11pper curve HI Fia 5 Cych~ tn1>>1 requt1od to 1111.iM hqutf!Kll(>n u1 tht field UfiCNt V#lOUI MtfRUW!ht e#tl'lq,u&kH <:an be obtatnfd from

                                                                                                                       ,.. ' n. l'tUU betWMfl ...... ..:ydk tltlH at

• 11ven tW*

                                                                                                                       ,_., mapttude 11\d lha1 .:om1pondin1 10 a ma1n1tudt 7 ,

th11 11, tM MSP. wu .;&k1.1J1ted ffom the di" for Hnth with 1ft (!'11>* vtlut e~ual u, 4 TM resuhi .u, shown in Table 8 It ,nouw N ft(Xff th~ MSf1 1;..t,tainii\ld usin, the l:U.fVt .:om1 spon4tna t~

• h11tt.r 1N, )-, would bf. ideru1c~

TM *'Alla ltquttfMti'>n rtleuonstup and tM MSfs Jeri vcd I ........ l'nltflmlfl M

                                                                                   *-~I.IMQfffl num11,ot *

• N.

ptevtwtly a.MUN ..... the 4ttt1MH to the remote liquefaction 11111 weft *curaaly ~un-.nCN They 1l1u assumt that the IM1tafNtion phenomena ocewtld It me, w11.h level around Pl

         ,....,,,,,..._~~. ~ . . , . ,..,,.,.~**, . ,.~... -,_ ....,.. ...  -**"-~-**-     (!! .~.,--,.w~**.,-~.,-     * *"*         peuhd ..,.., 1wh tllat u., f;(;f\d,&wns snowr. in Ftf I                                 ! .,

1 Jj 4

                                                                                          ,. 1 lj U,

l 111 wly rfprownt1uv, Ne,wr of thcu :1Ssumptwns ca.n bit do(lw...n-4 to *'*'*JYbody *s tatafKtion How111tr. mt follow*

                                                                                                                       "'I dt~Mt-$1.;i11 lhow,     **t. 1ft ftcl, ~ MSf!, Alt 1ndcpendtn1 of *c*hmat10n, lMf 111 only dffpcruunt on tht 1qu1 valtM "n1 I                    IJ 6

n; r.r IL JI I 1 ll$ll I fOffll f'lijfflNr of 1v,s.1 ,;;y,tes Mle,\td to reprutn! d1ffere1H tll'Vlquakt ma1nnu*1 I I I I I I

I .................................. ......_ Gf OM1'IGHIIIGA .............. , ,_,vtMMR 1., Ml

hld\lC*1ttyeHe f

                                                                                                                                      *~. ,.
                                                                                                                                          """""" of ~
                                                                                                                                                                ~~-*

(t)

                                                                                                                                                                      """""       f.11tNft.lW
                                                                                                                                                                                                          ,~*ttnt (3)
                                                                                                                                     ~ .................,......             .  ..,.,....,,...........,......., ~ . -..-**~~el>(....

lf 0 16 H 10 Ut 6 ,,,

                                                                                                                                                                  "tO                                         I li.

1' 6

                                                                                                                  '~
                                                                                                                                                                 '-*6

z. 3 u, I 6!

1

        '                                                                                                               l(

I" )( J" t- :it * *

                                                                                                               *-~***--*--..--"'~ -*---oJ.........................._,.~**--- ----*'"" =*"" "~--
                                                                                                                                   )4t                                     H)                        M             JO
                                                                                                                                   ~~~a,()--

Cont*r a wen charutemeti ,,te for ...,h,eh &he (N,>* value , ... I, Cyctte ........... lndUl!ll"t LklutfNffoft IA FitNt 11 well aumeftCf.d. ud whida li4df1M ~

• mtfRiwdit 1.5 ,.,.._. iMuc.lll\f u uao w1H-d~...m1fllted arouftd tut* Tbil fttu.rt thOWI fflll lh, KlhnJ flM:IOt$ illl 1*n&KII 'Th**

f-.it a..i*t*r*mn fflijU '" Al * "'* Otiltt **** widl tilt ,.,.. is, lb* c1Un1 facton arive4 from tN* .. onttdtrttu:in of die lfOlltdHl!ttl thtirtt:\fritUCI WQl.llft H4ue'7 """' or at _4"l\tr -.,ov*,u unifunn RumlMr qf cyqt.1 vtr1v, mu,1mum lk:eel '°'.*. ftl. durtnl 4if'ftrtnt tttffltl_. N.flltll4tt, 1,/,, 1f mt tM*ff)' QIIOrW ttom tht rww oemt f.q'Wt or ui*** dit& ttacioti levels ac dtMUI u.,.r.uon sites duphi.;att tht ..-.,wcrs nle,dattd with uy <Mhu* tot ol Knt1rt1um 11tonu.C:IDfi mla- ,Q'mflp0fldin1 to that dttlttn,1 UM! mtpltwfl 1. 5 tvent. IMM tion,dhpa provuad dW dt'* rtlttioMh*P* 111t U'4:kiiaced w,th cm tN mqrutudt '

          **rays_,ouh.

even, 11 the efttrtY c:*ua*nc Hqucfac;:tion tn die tbc mtffttt* vtn..,.. eqwv1ltttt uniform number of i.:ycles rr.we 11 sm>f'Oled hy Seed et a1 nen,, (10) MMINtTVN ICALlNO MCTOMI COMMRID whfirt N ..,., , "' I! Tht frtAl'ffY rtq1.ured under other evtntt 11 F11 7 com,.,., MiFt dev~lop!d b) Se~~ t,dn>.\I ( 19UJ, Cfl!IJv *.i;. ,Vw....., ""' 1A.,, ...,i N,-...,,, I. 11 i AmirlHYI (1911). Wilh,lt'M ! 1'94), and UM ,,...,.m ttu4)' Whitt S.... Md ld.n,11 l,l* me mqnuudc venu. up1fkuu n~l!litr of t)';t** Pfop<lltd elriitr ti)' Seed et *I t lf7!). lh*

                                                                                                      *IMon thin Pf(l(;te..a w ~ n 4-yi;:hc ttr*nttht '-'d en-Urtly QA lU()fil(Ory ttmpkt ***                                 "*'  rnults whh uca UlflP" oliitd to ch.* rtf.lOft of low*r n,unbtr 0( .. , .. k ... r.;;prt1tnt*"'

flle cy,h~ *11eu ratio* 11K&u,m1 hq"'facuon 1n t!\c field we of tltlhq\lakt mqmt** it.- than about 6 lS Thi difftrtnce thttetoffl biUWttn tl\e results bw* on ltbor1tory J,,.ta \ $ui;t !llld ld,10) ( ; ) W*#, ................ (. tt*> 1) l( (. ,., )

                                                                      ,"iv;
                                                                            ' if.I                    1Ad ftt&.4 hqwtfKuon Qt!I 1s *~ .:.1~,u The vtr} dow *1ru, mtnt NtWftn IM rct'-!ltJ obc.1.1,wd by Amorauy, arid by this 1nvnupu~m 11 Mio ,,.,.,u AmtM'M#yt' nuulta w11c ~ntd
                                                                                                      ~) ,,,,.Jtton of hq'ltftetion fttkt *ia from nwiy cw-
                                                                                                      <t***       1\t tHViU of ffltt 11\VtlttltflOft .Vt - - Oft 1M ..

pfk.U.iot\ ol en,rty (,lQllt':.*P'I to &tw fttld hq~f1A>11on '*' from t*,_.. di, . _ . , .""* m*y mqAitu4'fs It very tnH

                                                                                                                                                             . . ~ Amt)r1My1 ~ Wilh~t ttt k *1 * -.*n ** me M1,, .,. tlM\llf.'**t ot ** *t:*l*                                                ~ s&Miiltell "ffltUtON,

• clt*r -,,tf1"1\t belwt,n tMtt

,,_.....,. lfi,tl ** ffl:\l~ dtt1ad on dlt ttlau***P betw*n ,,u,,;:lv..tont wavld htvt tun ntM,c.4 W1tltamf ~al1n1 (l(:;-

          *     ~    "wt1,,n ~ifftffll nwn11r Qf i:y,tfi.                                           tor* for ttlfflquti;* mtJni*t ifH thin (S dtVffJt l;Qf'lttdfr-R ~ qf $t dloa ,-,i.,.., fwt;)tlH   11_.RM.i.:*:* . *     '*".**
                                                              ...*    *.IMI*.***** ~!It 4itftvtd ') hff ct It (lt11).

_., " - tM vtJ.IAf& dtnw,4 IJ.y dlt odtfr two fttlf~MH-t sclH,I, in for *~*n blhiw mqam,* ft With* t.mH,,4 tti.l

• • -** .,_y . .
• WfiQ ,.Cl lttl <T. l>. ~ ._.
• M** 4-.IN ,w.mtnl.t4 '" Tu,le to ft..: ~v,11*y o.f '"'wfiwtion

            .......***1>~-----*

t~J* Hlit)). tt .,,, _, tltw* '- -

                                                                                           *. t
                                                                                                   .  \J_. ,._ ~ t of .._m* , 9 u, '-" It ,tu,ty **n ut tM             * . 1.a 1o0Mflfl, *Utt ll(lwn<< mqn,u.idt ran,c tllild-
                                                                                                                             )II .... 6"0-f.6 ftf whJ,h ~ .Yt tVt1l1*k
                        ,, ~,**. '"*

ft* ) .. - .............. -~*, .**

9) ...............

iM by

                                                                                                      ,. ** ~-- of ltqve,11u.-, iM le ~-- of no Ju-1.-flti:titm
                                , ,                                           ,~,.

I $0 . Tht total energy .approach applied 1n this iluJy lu the h1stonu of hquefact1on at the fart.hot J1stan,;e1 from thl'

                                                                                                                                                                                                         ,..ut I                                                                                                                     earthquake centtrs of ener1y rctleast g1vn MSFs 1ha1 are very
                                                                                                                        ..: lose to the factors dcrt ved by Ambraseys rn   the ener1y approai.h. a titld hquefactrnn reimtan,e curve wu developed bued on !ht avetaft of the a..:celeratwn le\els I I                                                                                                                   estimated by e11ht ammuauon retauonsh,ps From this .:urve.

MSft wert dtnved Tha paper shows that the factors are ac-tually independent of the field aculeratwn. and are <rnfy dt, I I. I u pendent on the eart.'ltquake ma1nitude-equ1valent uniform numbtr of eyelet relationship The paper also shows that m the ener1y approach. !he ust of the data from the farwsr. hq-uefaetion sites, or of !he ma,nitude-tqu1valent uniform num*

                                                                                                                  -1    bet of cycles relauonship prol)Qted by S,:ed ft al. c 197,) and I                                                                                                                     any field acceleration auenuation m,xtel. results in the .unt

., I0 $,Md 11'11 idfl .. ( 1 IHI

                                                     .i **** *******
                                                                                                ,. .J
                                                                     "'"'***...L..w"*-**--"*-.L """" ..* ......!

MSFs It 1s recommended that for the purp<>ses of e..aluatsng liq-uefaction potcmual. !ht commonly used earthquake MSFs in* troduced by Seed and Idriss ( 1982J be replaced by those de-veloped in !his study based on energy pnnciples The proposed factors ue shown in Fis. 6 I l~tMagnt!lm i\OKt~OWLIDGMINTI l1'U1 sc11dy wu wpp:wtlld by

• t<<htla,al 1rant by Bechtel Corporation 1'lw WtiW thullu the Atvifwert and Df F1than1 O.td&rl. 8tch1tl Nt-uonal. for ,u.,HUOM <<> 11ftfm)vt Ult p*p11r Ms Lynda Preston and Ms I M*Jon* Q\&tro edited and typed 1M Mattus.;npt. rupe1111vel.Y APNNDIX I. fllFIRINCII lt'1hqoakt r $it9t wlttl Ambfuey,, N ~ ( 1'iJII) En11nter1na MIUTIOIOf', .. l.ur1hqW1JU E:n1r1 I v,.,

                        ~--- .       >    U'    "'"-"*'"***--***M No             QN/ SrAJCt Oy,umun. 17(1). I~ 10.1 I.

l.tlft'ltltHlt L.oc&tlOf'I Uqu.-tctiO liqV.f&Otion Aran.,. I (1994) "Mithodolol)' for hqucfacuon pottn!HI' ..,,,luauon of _l!}___ (t} (t) (3) (I)

                                                                                                    -......,~~.....,,-

11w, cut or die lt<Xkiu" 1,c1r,,1.$po,uo~d T1d1. c NJ.111, 8c,httl

                                                ...                                                                          Ttdwcal hbtk:auont.. Su flr1M19'o. Calif 19:Si               u          D*ly Ci.ty                                   I                        29       Btn11. I f I ff ll "lt*fionaJ modiftcauon of ;'.M;t:tlerauon foonio,11 "

l"5 0 Su Fr,nc1l(;o 0 I lull. S11lrmolo1ic:al foe. of Am.. 7h4). 1JOIIJ .* IJ21 p St1111 Rt>tJ 0 2 CMtM, D P. 111it Se~. H 8 (1988) "Liquefac:uon potential of wid 19" u Clli-.beiWbu Whi N-,ow, 0 0 21 l dtpoti<<. u~r low ltveb of ndtjbon. *' lttp No. UCIIEE/tC,Wl/1 /, I MSf, denvtll'I on IJus bu1s a,e hktly 10 tM more reliable than thou derived ba.ud on I.he data summart-.t in Table 10 The Cott of'-"*. Uni.- of California. Btrk.elty. : 19. COC"!WH, C 4 .. Ind Shu.al. I\ fl 0979) "S11muc m.oc1on and ruponse prtdiclion .ic.rnauvu " J, lan~u Entf'J Wld Struct Dy114min. 714). l9S-llt 01"1~. l 0., and Bcrrtl. J B 1 !913!. * *complll'm:m of a hqullfacuon I ac'"-1ty "' ** mt)' be respon11bl* for I.he diveracnce of Wil

• Hun's rta\llU ttlauve to Ambrueyf curve shown 1n Pit 7 CONCLUllONI ANO IIIIICOMMINDATION tMory widl f\eld obNrvauon1" GJ01cc1t111(1wt. London. tJ K, H<4J, 4.f! .. 4*)

0.Alh, P, SHd, H B . and Ch111. C K I t 976) Sand hqueflcuon 1n lvp-tc:lle simple shear 11111 *

• J. 011011<:lt ,,.,,, Di11. ASCE. 102<9>.

I 90t-927 llMl.

            *. . f~in1 ,,.,lk:lu*. ion, are dtnved from 1M stud.its                                                     Ooftovp, N C. and lomm1n. A E. ( 1974> *unctrtaU\tlf/1 ,n se11nuc 1WM1111* in clu1 ptpCr                                                                                                   Ii.a pn)l.14URI J. Gi(IIJ(lt. i,al'I D111 A.SCa. 104(1). &69* 117 MSP1 to be uted in liq.litft,;tiOfl                              poMnU-1 evJ.luauun* hive Fi...,., I. L,         s~      A S,   uan,.      L Md DahtMOa. N M ( 1994-J
                                                                                                                             *'fivll\l&liM nf sou llq*f~UOA lly en*ffY po11c1pl11 * / G*o11cll I   bMn duivtd m 1M put Ndd or, llb<<11ory tttt rtauh.a I SM4 and ldnu ttai> or on l.hct rtP"MiOO of ftold liqucf,ction data (AmlM'MtYt 1911. Williams 1994) MSFs derived baaed on ltborau>n* Muhs arc lowtr l.hM U\QM 4-nvcd from tleld d6ta
                                                                                                                             £ttfff. ASCI, 1lOC9), I U4 -1'69 Gibbl. H J . Md Holu, W O i 1957) Ruurch on dc1erm1nina I.ht dfM1t)' of slft(b by spoon ptMll'IUOn 1esun1 *

• Pm,: . Fourth 1111 Col'l/

011 Sm/ ,W,clt lilld 1oi.t.ffd £n1rr . Burutrworths. Londun. Entland u I *'"" HM11aw-. H S . la,i,,am, P W. Ind lel't)'. M J 11911) *

• A1tenu,tton fo, ..,....., mttM\Kka ltu 7 , ~ hiJher for mas*

l\l~ .,.... 1.'

          '-4' s

• ldnD
• fac1on were bucd on labor11ory umplc r1lauo1tt to, 'UIORf M~ffU(; pound mouon *
• BwJ/ .. S*1.tlfk1lo11cal Sm:

IJ/'4m, 11<6), 1071,l(>>! H1.1d10n. D E ( 1979) "il*-.dinf.,.. 1n11rpreru,, svont niot1on Kctier* CM,t

• Htn,oiltfld to lht nwnNr of cy,t.1 &o hqf.lt* OIJ'ffit *
• l11t1n11,1111 ltlr.MOf*' .r>11 wrrltq~ Crittrra. Str1":rural I ._ ..... -.n*n.*

fwuoft ,..._.nc.a&Jvt of lower ma,nit\lde e.nhqulies. l*ss 6.2, lh:tiltt, 4"" Slfffltf MO'UM JtH"IU, Vol I. Ul'thquallt lnll'I Res in..... tJn.tv of Cahfonu-. lttl!,lltY

    *h m,., t. mtpu~1                                -II
                           .. ** * .. Wmi.tn'\I' f~t<>N dtfftr co1141*re.ly from th111 abo\lt 6.0 A n,view of lhe
                                                                                                                             °"'

ldn.-. I. M (1991 l '* 11,Hl\qulP f'l'Ol"nd mouons 11 1,Qf1 soil mu .. S,c. lttt. Cmif on lltUttt Ai\, ilt Qcq,tdt Eurth41..au l111r and So,/ ii 4- IMM tfr botih inv*su1tron sh9ws thll for the lo~er mt4*

    . . _ ..,.._..,. lht uia in Am*1t1y** "'f*.tUiOf' lftMYttl
                                                                                                                             ~ws. S Pl'o*'. et,t, ltollf,. Mo ht,,.,, l M ( 1993) *       *~*dliN*     fot seltcun* t"'1h(l11tk* fl'Ound mouon1 ll fl:l!lk $JIU.' R,p Ill tit* "'"' l1t11 of $tulldu:I'(/., and r,,111101 . C s
                                           ..,,..... ~.,.
    ....... I 8l9N "'WM IWllUt.:11 but (1

• c** of h'&ut* [)qt. o,l Clil. .l'H, WIJim,-:,n. 0 C lw~. T. KJIIYIIU.. T, Kawuiu,,,.. It.. WI Swk.i, M. t 1971)
• S"',

    , . _

• 2fj i.Mta of flO h.-fw;qqn), wllil* WUlilU'M. * - .

tf CW} OU lU, *of ~~f-- 111d 94 CMH Qf Ml "'**** ,,. . s""""" ,,., u1--. of ~ . - ""i.r11.1on rtc:orlik tlMlllltd 1n Ja, J-.. G Cottf. .flll 4'4r10,""""Q"* Mettia* ,. . stien,.

     .. .             . . . lltlW., of hid pm__. . .,.

• tibl) to l_..y_., I, -

4"' ......... i.l T...,...,

                                                                                                                             ** ~~o. Ctl,Jf . VQ&. i. 'JOI- 711 091') "Jntl ro,,w of h4lltf¥t10tl S-1., W ll'ltllfll. IJ(4), fl =tl
                                                                                                                        ~           GP Gl()TI~ I ~ . _ , NQYl. .111 , . . , ...

Mc<;w,e, It K ( 19"7). S.uf'ILIC dies,p ,pecua Md mapp1n1 procedure, earthquakes in Japan,' by E. Kuribayulu and F. Tatsuou." So,LJ aNi I q-.. u1ln1 bu.ud analy11., bued dn¢tly on oscillaror nisponse." J. £,anJ,.

            £11,,, """srrw:,. Dy,ta.m1c1. ,CJ), 211-234.

Mc<Julte. It K. ( 1978) "Seismic jl JUnd motion puameier relations." Fowtd.. 171 l l. 82 - 85. APPENDIX II. NOTATION J. G,ot*dt. E1t1'f Div., ASCI!. 104(4), 481-490. Orpha!, 0 L . and Lahoud. J A ( 1974). "Prediction of pcl!U around I rnot:on fro,.n tartb~ua.kes." /lull.. S1/.mwlo1ical Soc. of ..o\m.. 64, 1,63-1'74. Seed. H 8 <1979) "Soil liquef,..:uon and cyclic mobility evaluauon for level around dunn1 eanbquaku." J.. G1011ch. En,,., Orv. ASCE. A A.,,

                                                                                            = accelerallon in 8';
                                                                                            = acceleration under earthquake M,;

a, a(() = accelf'r11tion in cm/s 1; I 10,(l). 201-lJJ Seed. H 8. Azan10. I. and Chan. C. K <197'!). "Evaluation of soil liquefaction potenu.il dunn1 earthqua.kn" R,p F.ERC 75 -28. Earth-quake Enar1 Res Ctr., Un.iv of CaJitorrua. Berkeley. G. GMAJc = shear modulus; muimum shear modulus; M, ,'.f, g = acceleration of ,ravity; Jc .. spnns constant in simple osc11lator;

                                                                                            = earthquake maanitudea; Snd.. H 8. and ldli"' I. M. (1982) "Ground n1otions and soil lique-I   faction durint ellthquakes." Mono1raph S,r:. earthquake Enpt. , ..,.

l111t.. Uiuv oi California, Berkeley. S.ed, H 8. ldliu. I. M. and Azan10, I. (1983). "Evaluation of lique-faction potential usin1 tleld Pfrfonnance dai&. *

• J. G,m,clt. En,,.,.

                                                                                       '" .. mus in simple oscUlator:

N = SP'l'-blowcount; N1

• blow count nonnalized to I k.sc;

                                                                                 !N, >eo = normalized blow count corrected for 60% energy ra-I   D1v., ASCE. I09(3). 458 -482.

S<<d. H 8 . Idriss. l M. and l(jefer. F W ( 1968). "Chvac1enstics of rO(ll mouons durin1 earthquakes." R,p. No ££RC 68-$. Coll. of Enpt .. Univ of Ca.lifom1a. Barkeley. tio; N". Nt#, = equivalent number of unifonn cycles of loadins in earthquakes of various maanltudes; Seed. H. B. fdnss. I M \.faltdisl, F. and Banet)ee. N (197.1) "Rep. r" = parameter refteclin1 response of nonrigid soil col-I rtMntAtion of UTe,Ul4f wne histories by equiva.lent uniform ,uess se-riea in liquefacuon a.n.uyus." R*p. No. EERC 75-29 Earthquake lff PJ. RH Ctr. Univ. of California. Berkeley. Seed. H. B .. and Peacock, W H. ( 1970). * *AppUcabiliiy of labotatory test umns; T = fundamenral period of vibration; V a volume; u, V,

• velocity, shear wave velocity; procedures for meuunna soil liquefaction char1ci.rist1cs under cyclic I loldina." Rip No. EERC 70-8. Coll of Enpa. Univ of California.

Berkeley S..d. H 8 . Tolumats:.i. K . Haider. L. F. and Chun 1. R. M. fl 984) J. y, W jl

                                                                                         ~
                                                                                            = wei1ht;
                                                                                            = displacement. velocity, mnd .acceleration of simple os-cillator. rHpectively;
                                                                                            = base acceleration in umple oscillator; "The 1nlluen1.:e of SPT proc:edures in so.I liquefaction ruistance eval-*
                                                                                            = shear strain, I   1.1at1ona  R,p No UCBIEERC-84// 5. Coll of En,rg . Univ of Cali*

fomia. 8crll.eley W1lltam,. T ( 19941 '!'vt.11nnude sc&lina factors for analysis of liquefac. lion hazard, PhD presencauon, Dept of Civ Enar1. Bn1ham Youn1

                                                                                      -y "Y
                                                                                      "Yr   = total unit wei1h1 of soil; uni1 weiaht of water:
                                                                                            = ,veiaht per unit volume; I   Univ. Provo. t.:1ah Youd. T L. ( 1977) "D11i:uss1on of *end review of liquefacuon durin1 a"'

w.

                                                                                            ,. mean effective mess; and
                                                                                            = naruraJ frequency of harmonic motion ::: (k/m/ 11 .

I I I I I I I I I

I I ATTACHMENT 4 I

I I I I I I I I I I I I ,I I 'I

DOCUMENT. PAGE(S) *PULLED SEE APERTURE CARD -FILES . APERTURE CAHO/PAPER COPY AVAILABLE THROUGH NRC FILE CENTER NUMBER OF OVERSIZE PAGES FILMED ON APERTURE CARD{SJ

                                                           ---  I ACCESSION NUMBERS OF OVERSIZE PAGES:

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fHR(.AOCD (OVPLING "'°-OCO ro PLAT£ 18' iW.U) I I I International Uranium (USA) Corporanon White Mesa Mill I - *---* *-* -------.: __. __.......~--- SETIJSNBNI MONITORING POINT FIQCQ'.l

                                                                                                                              ,n... 1NENT1 DESIGN . .._*~                              SHEET I I llllfl)IA.OIIO CHl<D 8>'                 DATE SCALf 11/17/tll
                                                                                                                                          "'1 or I

I

I ATTACHMENT 4 SETTLEMENT DATA I ATTACHMENT 4 SETTLEMENT DATA DATE C112£H1 ELEVATION DATE Cri2Wn:11 HEVATION DATE Cea 21/Vttt 2 EtEVATION DATE Cell 2 Weal J ELE\IATION DATE C.d 2 Wf*I

• ELEVATION Ol/11/tl !162411 CJ&/25/lt 50*'50 I 1Grl0/lf 11121111 11/lO/ff W* st

                    !1624 M
                    !1624 fl
                    !111244' M140 01111/IO      5112U7 I     -

01'"'90 !111240 02r.Wt0 !1624 44 OJ/1I/IO 511240

                    !1124 62 05/0)/IO     612441
      !Nl/07/IO     !11124 ,o 07r.MIIO     M24 31 I      Ol/10/lj()

09/14/IO IQ/12/IO 1111~'*0 12/14/90 51124 40 5112431

                    !11124 341 51124 JI
                   !1624 1, 01124/tl      '424 35 I

02/22/tl 5'24 l l Olnl/11 se24 l l 04125/tl Sl24 )) 05/21191 '624 Jl 09/271111 "619 9fj o&/21/11 M24 lO 10/31/11 S6HI 83 0712tll1 !Ml24 lO 11121!11  !>6111 79 Ol/22/II ~U4 l0 01,02111 I

                                           " " 76 ot/27111     !14124 ]1   0!:]1112      m1,i I0/31/11     M24 JI      021211/92    !,61112 11121111     5'24 JI     0317!1/t2    ~1961 01/02Jl2        5'24 ]2   04124112     !>61899 01131112           ,a24)  O!II04192    Sill 6'5 02121192      !Ml242li    -7112        '161961 I

OJ/2M2 !1112421 ~*~2 !161161 04/24112 &e24 21 OY.!0/92 S819 61

     °"°4112       5112430     05/2tl92     !1,619 67 05l071t2      5'24 21                 '161961 06/1!1192     !11124 21   06/11192
                                           " " 61 OY.l0/12        5112421   06/19"12     !,61911 06l2tlV2        5112, 21  0612'1191   '61961 I     Ol/11112 Ollll/92 Olr.!M2 07/112/11 01'°"'1 512429
                     ,a2, 29
                     !Ml24 21 5'24 21
                     !11124 31
                    ,ez, zc 071l)2112 07/09112 01116112 07123192 07/21112 OM>li/92 Sflll 61
                                           !MIii 65 5111167 5111166 Hit 10 561167 I

01116112 IM524 21 Oll/12192 !161981 0112m '82411 Ol/10ll2 IM5tt61 07129117 se24 21 0W7112 $1111 70 091116/12 !il24 2~ 08/02/V2 !1411189 Ol/12192 M2429 08/09112 !1111961 Oli20IV2 !Ml24 27 CHl/16112 !1111947 04/27112 !Ml24 l 09/24112 !1111965 I sez4 21

                                           ~,,,,

OIID2/V2 IIW1192 5611 '6 Mlllf IO/Olltl Otl/17112 !il24 27 10,1~2 !1111947 09/24112 5112406 10/211'2 !1111159 10/03112 5'24 2* 10l261t2 !i61tU 1G/IMl2 !11124 27 11/G4112 5611 SI

                    ,ez, 27 I

10/1"2 t111tl92 lG/22112 !11124 41 11/1&/i2 !Ml1BI I I I I I I P*U- I of 2 I

I ATTACHMENT 4 SEITLEMENTDATA I ATillCHMENI* SElTLEMENI OATA OI\TE Cd2E ..t EU!\/A!ION OAIE Ct<ti2W.stt f:LEVAflON DATE Cell2Wttt 2 E:lfVATION DATE (pll'J We-ar3 ELEVATION DATE C1!'112~s14 E.U:1,1Af10N IOlll,/12 11/21191

                        '8.1021 Y2*

111251112 12,T/J/91

                                                 !111,00
                                                 !1119 !Ml   11,'2~2          !1,617 21                      11/2~2         ~,, 31     ,..... q7~:           S6t8 18
                              )0
                                                                                                '""'"'*dd.d                 se,, :i.

lfll.,lil I 1:VOJ/t2 1211°"'2 12/17192 12/2Sll2 01/01/ll OUOMll 5624 25 Sl24 27

                       !Ml24 JO 562027 1412'27 12/10,...

12/11/'tJ 12121192 I 2/l1192 01/07193 01114193

                                                 !Mitt 55 5619 S.

M1171 S619 52 se,e *~ 12/03/W l:Z,10/92 12'16/12 1211.119'1 12'11192 011()7193 S622 12 5622 OJ 5622 01 S622 1f

                                                                              !Ml22 01
                                                                              !>62113 t!alltf\StOn         12/0J.'81 12J10/V2 12116112 12121192 12/31192 01,07193 561131
                                                                                                                            !'1611 ll 5't8 ]7 Sllll )5 Sfi1127 12/0J/92 lli!0/92 12.'16'92 12/211'92 12/]1!92 011)11111 561121
                                                                                                                                                                 !Miil 2 5619 ,,

561fl 17

                                                                                                                                                                 ~112 56HI 11 011,,r.J                                       0111'/ll I

01111/ll se2* ll 01/21193 Ott141Vl 01121/ll :ieJ* lo 01'21193 OL'21193 011211113 "t,'21193 01121113 Y2C211 02/04"1 'bit .. ~ 21193 01121193 0112MIJ 02/0C/ll !412C 27 02111193 !Mll94fi 02/()019) 5611 ,~ 02/04193 Sllll 27 02/00'9)  !,Etl I) 0211119) Y2421 02111193 021111113 02/11/IU 02111193 02/11111 562027 C212!119J 021 11/1) 02/11193 02/1&.'9) 0212Wl !1124 27 Ol/Ol/113 5611 47 02.'251111 02/2519l 02125191 I Ol/OC/13 Ol/1111) Ol/11193 0111411! Ol/31193 04JOl/ll 5624 27 S62"27 se2* 21

                      !1624 21 562* 27
                      !112*27 Ol/10/93 Ol/11193 Ol/25111) 04l0119l 041()119) 04/1~13 5619 1~
                                                  ~1947 S618 75
                                                  !Ml!i 27 S619 46
                                                  !161945 Ol/Ol/9l Ol/10/Vl 0)111/93 OW519l 04/0111) 041()1111)
                                                                              ~11 79 5,611 41
                                                                              !162115 5620 9~

5621 H

                                                                              !1621 68 Oll()ll9l OJJ10tVl 0):1&19)

OJ/151111 u4f0119l 04/0119)

                                                                                                                            !>6112)
                                                                                                                            !>611 93 S61S 2l 5617 49 5618~

561122 Ol/011113 0311Cl'93 0:1.1119) Ol/251113 04/()119) 04/08!93

                                                                                                                                                              !i,61& 0~
                                                                                                                                                              ~1115
                                                                                                                                                              ~111(11
                                                                                                                                                              !)6,12ti,
                                                                                                                                                              ~17U
                                                                                                                                                              !MIU 0.

(),\/1!/IJ 562* 21 04122193 Q.111S/9l  !>67161 04/1") Sll18 19 CMll~l 5611 OJ I 04122/tl Oll)Qlt) 07121/1) OIIMltl 562* 29 5624 21 5624 21 562* 21 S62427 04129193 06/30/93 0112919) 0&/2119) 09/10193

                                                  ~1i,H 5619 H
                                                  ~19<<
                                                  !Mllll 45 S,819 42 04122191 04129191 llel)O/Vl 0712M) 01126193 S621 67 5621 55 S621 I Sll21 511 51121 51 04122'9) 04/2919) 00/J.0/9) 071291111 08/26,'Vl 561121 561117 51111 11 5111117 51118 14 0412219) 0412919) 06/30i9l 01129,93 01/261111 561! 01 5618 04 5611 04
                                                                                                                                                              !MIii 95 5111711 Olll0/9)        54124 27    10/27/ll         5419 4   09/30/9)         S621 46                       09/'.IOltl      !MIIS 13          09fl0/t)        51111 Ill I

10/27191 \412* 21 1112219) S6H**1 10/21191 S621 51 10/27193 561106 10/27193 561711 11172/tl Sl107 1212&/ll 5611 4l 11/2219) S621 .i 11/22193 54518 01 11122193 S617H IU,1119) !112* 1) 01127194 se,,. 12121191 Sl.21 41 12/2119) 561107 12121193 51117 15 01127114 !112C 1l 02124194 !1119 35 01127194 S621 37 01127194 se,a 05 01127194 561715 CV24/t4 562421 03131194 5619 le 02124/90 !1621 35 02124194 S618 02 02/24194 5617 II Ol/31194 se2* 22 ~~ Sill lJ Ol/31194 Sll21 ll Ol/31194 S61102 Ol/31194 Sl17 75 w* 2s !Ml19 ll 05'051114 Sl21 l2 ~ 5617 !HI 05l05"4 !1617 75 I 071'2t"4 1Dl2&i')4 12/22194

                      !1624 21 562* 29 Sl24 2, 562C 2t 562421 011211194 09/29194 10/21194 12122194 01,'271.. 5
                                                  !M119 l2 S619 ll 5619 )I S619 3 5619 ,I De/Oll94 07129194 01.7919, 100&/04 12/2'2194
                                                                              !>621 S621 5621 S621
                                                                              !1621 31 31 21 27 24 07/21.'94 09/211194 10/21194
                                                                                                             ,nm*

SIii 00 S617 96

                                                                                                                            ~17 98 14117 97 07129194 0912911M 10/21194
                                                                                                                                               ,2,72194 51117 77
                                                                                                                                                              !1617 75
                                                                                                                                                              !MIii 72
                                                                                                                                                              !161117
                                                                                                                                                              !1817 72 01127195       51124 D     0212)195        S61929     01.'21195        Sll21  26                     01/27195        !1611 IMi          W21'95         !tOH 73 I

02/1~ !1624 01 Ol/31195 ~H127 02123195 !1621 26 0212);95  !,6'7 9~ 021'2l/95 54117 67 Ol/31195  !>624~ 0"21"'~ S619 26 Ol/31195 !1621 25 Ol/31195 !Ml17 Ill 03/31/SS !161112 04121115 !1624~ 06J02195 !MIia 29 ""121,r,~ !1621 25 04t,ll/t5 5617 17 04121195  !,,617 51 OII02"S !1624 04 07t]lt95 !WIiii 29 OMJ2195 ~2124 06/02195 '!,61113 06J02195 !t,617 6!) 071)1195 5624 06 09/01195 !161915 07'11'115 S621 25 07'31'95 ss1a,. 07/Jl/9!1 ~1773 OMll/95 562* 01 09/2!1.tlJS !Ml19 2l Otl/01195 562122 09:011115 ~1191 O~l.'95 Sll1765 0~ S62* 07 10t1Yl95 ~1927 09120/IIS 5621 2l 09129195 ~tl ill 09129,95 S617 66 I 10/10/M 111)0/95 12/21'" 5624 IS S124 IO

                      !Ml2462 11'30lt5 12121.95 Olr.'6196 S618 21
                                                  !MIii !19 Sll19 27 10,19/i5 11130,'95 12121195 5621 25 5621 21 5620 93 10/19195 t1fl~

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                                                                                                                            ~1/H S617 95 5617 61 1()119195 11!'30/9~

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                                                                                                                                                              'S,617 JS
       ~-

01/281911 !1124~ OJ./01.'96  !'1619 21 01116/96 ~2121 01/26J'81 S617 92 01126/96 se116!t Ol/01196 5824 0) 0412~ 5811811 Ol/01196 S621 19 Ol/01196 !161119 Ol/01196 ~1757 11412!11'86 542* 05 ~ll0/98 5619 2J 04125/lle ~2121 04125191  !>617 91 04125196 5617 S3 I

                      !112* OS    06/1711~6       5419 26    0~               !ie21 17                      05l30l98        581111            05/JOIW>        5817 56 Ol/27196       Sl24~       07127196        5611 21    06/21/96         !>621 19                      06/27196        ~1781              'lel2711l6        !Ml!rff 071211111      5614 ~      OlllOl96        561t 26    07126196           !Ml21 2                     07/261116       5817 00           07126196           !1617 6 OlllClll6        562* Ol   09/271116       'lelfl2t   06llOl9f         5811 tt                       QI/J019(1       !161117           0&130196        5617 62 ot/27/IMI        5824 02   10'26li6        l_,619 24  09/27196         5621 11                       09/27196        5611 9J           otl/27196       ~17&5
                        !1624 Ol  11.77,'9&       !161915    1°'26.'96        '!.611 17                      t0/26196       !1617 00           10/26196       561759 11127"8          !1624 04  1;/1'201'96     56ft 21    11,71116         ~2117                          11.'27"96      ~17U                1 l,Z7"6      5617~

I 12/20/IMI 011)1197 02127/f/7 OJ/27197 04.,'2!1111/

                        !1624 04
                            !1624 se2* Oli 5623H 511240-,

OlfJIJ97 02i21191 OJl211Vl 0412"1 0!>.'2"1 5&1i JI

                                                    ~Ii l
                                                  ~li2l i619]

5619 22

                                                             ,2.'10/U6 011)1,'97 02t111i1 01!271"7 04'1$.IP
                                                                              !14$2111 5621 2)

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                                                                                                                            !,617 16 5611 er, 12120/96 01131197 02l"211SJ1 OJ.'27191 04'2!>.111
                                                                                                                                                              ~116)
                                                                                                                                                              !>617 S6 5611 53
                                                                                                                                                              ~17 57
                                                                                                                                                              !,617 49 WlOl91         662.. 01    06/26191        SflHI 22   OS1l0Jii7        ~2116                         05/J0/91        S61115            P51.IOl91       ~"
                                                                                                                                                              ~,,~    ~~

I 06126117 !1624 00 07I)l'97 ~H126 Ot1126197 ~11 HS 015,76,1)7 r.s11 es O<l/26197 071)1197 S624 Ol ON28'07 S6t~ 2 071WIII ~2121 Oltll,'97 S617 94 01131197 !t617 &! Ol/211111 !11124 01 09.'2$197 Ml!i18 01121'97 !11121 16 Ql/2&117  !>61.11 01121197 ~i17 5S Ol/2"197 '162* 01 10/2elfl1 ~1911 011,25197 !Ml21 *~ 09'2!>,97 561781 09.'2i'91 5617 ~2 10/2"1 'l624 01 I 0.'26117 5619 l l tlJ/26191  !'>62014 I0/21,'97 561719 10/26lil' 5617 5) 11111111 562C 02 11111!'97 14119 l l 11'!$/97 !1621 17 11/1&'97 561717 11/11,17 5817 Sl 12111111 51124 00 12!11/97 !Ml19 ll 12:11119/ ~2116 12/11197 !11117 90 12111197 5611 57 I 01116fH *.*2* 00 01118--'H S619 2l o, 16/91 S621 t6 01*16.rte  !,,617 H 01t161$6 5611 ~l 02'0&,ta S624 Ol O:<Oei9a !MIit 2J 02106/il !1621 :5 02/061'811 !161718 o;,1>6tte !14,17 43 Ql,11)6191 5112*~ OJlllti/91 s.un n'1Jt5.'ill  !.621 t! Ol/Ofi/91 S817 !7 OJ/06/ljS 5617 41

       ~WI            !Mill"      04l01'91        ~1i 25     04/03"1          \621   It                     04()l/ta        !1611 B!t         04,0J,'81       5617 SJ 51124 00    ()5JOHI         '>61915    0-,'81           ~21    ti                     W06l9I          561719             ~/06191        !,617~

OMIIIN !1624 00 Oll!Ol'N S.18 21 06/01/IIS 5621 IS 06/01191 S617 S9 061()1191 ~110 I I I

Cell 2 East Settlement Monitor ATIACHMENT 4-A 5625.2 5625 5624.8 5624.6 5624.4 C 0

.:=

C'O

 >   5624.2 Q) w 5624 5623.8 5623.6 56234 5623 .2 l111a'1'1'1'.'l/a'l1'.'1'1'a'a'a'a't1*11, 111111111.'1'a'a'1'.'la't'111111,*t1111a'a'1'1'1'1'1't'111111, 1, 1t,.,1,*11v'1'c'1'1'a'c'1'1's'1'1'1'l.'1'1'1'ta'1'a'a'1'.'s'1'l1'1'a'1'a'l1'1'1'la'1's11111t,*,1, 1, 1, 1, 11,1.s,1,1, 1a'1'1'1't'1'v'a'1'a'11a'11111*1111a'a't'1';'1'1'1 1I 08/18/89            05103/90              05123/91                05/04192              07/23/92                  10/16/92              01/28/93              04/22/93               05105194               09/01/95                   09/27/96                09/25197 Dates

Cell 2 West 1 Settlement 5620.2 ----------------4 ATIACHMENT 4 -B 5620 5619.8

                                                                  ~                .

5619.6 5619.4 c5619.2 0 a, (I) w 5619 5618.8 5618.6 5618.4 5618.2 5618 11111111111111 Pl I I I 11"111111'1 ,a 111111111,a*1*1*l1 l'I I I I I PPl'I 1111111 I I I I I I Pl 111111111 Pl 11111111117PI I 1* 111111111111 l"l"Pl"l"l"P~ 09127/91 03/25/92 05129/92 07/09/92 08120/92 10/01/92 11/11/92 12/21/92 02/04/93 03/18/93_04/29/93 11/22/93 06/06/94 02/23/95 09/29/95 04/25/96 10/26196 04/25/97 10/26197 03/06198 Dates

Cell 2 West 2 Settlement Monitor A TIACHMENT 4-C 5623r--~~~~~~.!=========~==============~~~~~~~~~--. 5622 5621 5620 c 5619

.Q ai Q)

W 5618 5617 5616 5615 5614 1*1*1*1*1*1°1*1*1*1*1*1*1*1*1*1*1*1*1*1*1 11*1*1°1*1*1°1*1*1*1*1*1*1*1°1*1*1°1*1*1°1*1** 11°1*1*1*1*1 11*1*1 1111*1*1 11*1 11*1*1*1*1*1*1*1*1*1*1 1 1*1*1*1*1 11*1 1 1*1*1 11/25/92 01/07/93 02/18/93 04/01/93 07/29/93 01/27/94 09/29/94 04/28/95 11130/95 06/27/96 12/20/96 06/26/97 12/18/97 06/011 Dates

Cell 2 West 3 Settlement Monitor ATTACHMENT 4-0 5620.00 5619.50 5619.00 5618.50 C .Q ii Q)

                           *             ..~

w 5618.00 5617.50 5617.00 5616.50 __________________________ _ 11/25/92 01/07/93 02118/93 04/01/93 07/29/93 01/27/94 09/29/94 04/28/95 11/30/95 06/27196 12/20196 06/26/97 12/18/97 06/01 Date

Cell 2 West 4 Settlement Monitor ATTACHMENT 4-E 5618.6 56184 561821 -\

• 5618 5617.8 Cl)

C: 0 cu 5617.6 G> w 5617 4 5617.2 5617 5616.8 5616.6 111*1*1*111*1*11111*1*111*1*1*1:1*1*1=1*1*1:1-1 11*1-1*11111 11*1*1*111*111111111 1111*1111111*11111*1*111*1*111*1 1111*1 1111111111*1*1*1*1*1*1*1 111111*1 1111*1*1*1 11/25/92 01/07/93 02/18/93 04/01/93 07/29/93 01/27/94 09/29/94 04/28/95 11/30/95 06/27/96 12/20/96 06/26/97 12/18/97 06/01 Dates

I ,~**., I ATTACHMENTS I I I I I I

I I

I I I

I

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TABLE22 EJERGY FUELS NJCLEAR. INC.

WHITE MESA MILL a, Soil Samplng R ~ {VALUES) x 10E-3 ~Ci/Kg Ut

                                                                                                                    +Ii' a,

BHV-1 BH\l-2 BHV-3 BHV-4 BHV-5 Date Sep-80 Ra-228 0.850 U-Nat 0.420 R*226 0.340 lJ.Nat 0.420 Ra-226 0.420 LJ.Nlt O.A.20 Ra-226 0.410 U-Nat 12.UM Ra-226 0.230 U-Nat 14.881

                                                                                                                  -z
                                                                                                                   -of c-Sep-81    0.400     1.800    0.300      0.600     0.300     O.t,.00   0.200     3.000    0.300     0.800 0.770     0.440       0.560    0.890     C.L20     0.750     0.830    0.550     0.420       c::

Dec-81 0.790 XI Jun-82 0.423 0.384 0.412 0.180 0.285 0.207 0.478 0.260 0.449 0.216 z

                                                                                                                   )It May-83    0.471     0.410    0.569       0.550    0.481     O.MO      0.643     0.3'0    D.147     0.140 C:

Jlln-84 0.713 0.886 0.818 0.883 0.489 0.'-71 0.124 0.324 0.132 0.310 en Od-84 2.980 0.888 2.330 0.089 2.880 O.i"21 3.490 0.804 2.550 0.817 )It Aug-BS 1.830 0.800 2.190 0.424 2.270 0.424 4.330 0.294 1.280 0.577 n 0 Aug-88 0.369 0.854 0.-486 0.888 0.382 o... 0.398 0.826 0.728 0.83& XI Aug-87 0.600 0.800 1.500 0.800 0.800 0.IOO 1.200 0.700 ,.500 1.300 "O Aug-88 1.500 1.600 1.300 0.700 0.800 O.IOO 1.000 1.300 3.800 5.000 Aug-89 1.200 1.600 1.100 3.000 0.800 1.000 1.100 1.400 2.900 5.700 Aug-90 2.900 5.800 1.000 1.400 0.900 1.400 1.800 1.300 3.700 3.200 Aug-91 3.900 8.800 1.700 2.800 2.eoo 5.""00 1.800 2.800 2.500 4.MX> Aug-92 1.200 2.200 0.900 1.400 0.800 1.!00 0.900 0.900 1.100 1.800 Aug-93 2.000 1.700 1.400 1.700 1.100 1.900 0.800 1.eoo 4.800 3.500 Aug-94 1.000 1.600 0.700 0.800 0.700 0.900 0.700 1.100 3.000 3.800 Aug.IS 2.810 4.700 0.680 0.200 0.880 0.650 0.580 0240 2.800 1.800 Jwg-98 1.700 2.150 0.800 0.480 0.300 0.210 0.500 0.520 1.900 2.010 C u Mean 1.43 2.00 0.98 0.92 0.93 C.99 1.12 1.60 1.81 2.8& co z Std. Dev. 1.02 2.12 0.60 0.77 0.76 1.19 1.06 2.80 1.39 3.34 - C" CXl I>.,; I\,;

                                                                                                                 ~

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I I ATTACHMENT 6 I I I I I I I

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I I ATTACHMENT " I I I I I I I I I I I ,I I

ATTACHMENT 7 - RESPONSE TO NRG COMMENTS 7117198 TABLE OF SIX-HOUR LOCAL PMP RAINFALL DEPTH VS DURATION FOR WHITE MESA MIL 6-Hour Storm Rainfall is 10 inches (ref Hydrolog1c Design Report for White Me~a Mill. 19901 6/1 Hr Ratio for WHITE MESA 1s 1 22 (Figure 4 7 and Table 4 4 HMR 49) ONE-HOUR PMP IS 8 20 inches at 5000 't elevation 97 0% or 7 95 inches at 5600 ft elevation ( 1 J DURATION %OF RAINFALL DEPTH, IN INCHES. AT AVERAGE ELEVATION OF HOURS 1-HR PMP (based on Table 6 JA HMR 49) 500011 560011(1) 0 0 0 00 0 00 0 25 74 6 07 5 88 05 89 7 30 7 08 0 75 95 7 79 7 55 1 100 8 20 7 95 2 111 9 10 8 63 3 116 9 51 9 22 4 119 9 75 9 46 5 121 9 92 9 62 6 122 10 00 9 70 Plot of data 1s adaptation of Figure 12 10, HMR 55A, to site rainfall ( 1) Average elevation of site in v1cin1ty of base of cell 4Aeach tanks TIME DISTRIBUTION OF FIRST ONE HOUR OR THE ONE-HOUR PMP (after Table 2 1. NUREG CR 4620) RAINFALL RAINFALL %OF RAINFALL DEPTH IN INCHES DURATION DURATION ONE-HOUR AT ELEVATION MINUTES HOURS PMP 5000 ft 560011(1) 0 0 0 0 0 25 0 04 27 5 2 25 2 19 5 0 08 45 3 69 3 58 10 0 17 62 5 08 4 93 15 L 25 74 6 07 5 88 20 0 33 82 6 72 6 52 30 0 50 89 7 30 7 08 45 0 75 95 7 79 7 55 60 1 00 100 8 20 7 95

ATTACHMENT 8 DEPTH VS DURATION FOR 6-HR PMP WHITE MESA MILL, UTAH ATTACHMENT 8 RESPONSE TO NRC COMMENTS 7/17/98 12.00 t 10 00 i . **

                                                                            *     -~

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I I ATTACHMENT 9 I I I I I I I I I I I I I I I I I

RAINFALL-DURATION CURVE FOR ONE-HOUR PMP AT WHITE MESA MILL ATTACHMENT 9 - RESPONSE TO NRC CO-ENTS 7/17198 900 8.00 7 00 6.00 fl) UJ

c 500 u

..i ~ 4( ~ z 400 ~ 3.00 200 1 00 0 00 0 20 0.40 060 080 i 00 1 20 DURATION, HOURS

• I ATTACHMENT 10 I

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I I ATTCHMENT 10 RESPONSES TO NRC COMMENTS 7/17198 RATIONAL METHOO CALCULATION Of PMF PEAK DISCHARGE, VELOCITY, DEPTH AND SCOUR THROUGH CEL .. 4A BREACH fl~.,"'"'""'11'"'1 EL~-" wx M1N *>N,.VJt<:N st,.,,..r. I{ RAINr"-ll su..,~c~ PE-~ I HEMEN! l~NGHi F.:t.EV ft f'I $ ANGlf /VITHIN ARfA ()ISCHARUf 1Jttgn*e!t Fl0t1U tf(t) ,,11n, !ltHH '::0: r,fl. (:ftl l (:()Vf~ 12:Ml 5619 5 r,611 0 0020 () fl 0 ]4 6 5] 11; 29 74 00 1142 Cfl.l 1n8ERM 1G 5617 561~ 0 20()() 11 31 0 34 0 5,4 19 J4 1 10 1159 I CELI )COV!R Cfll 3i,A 8ERM Cf.LL 4A 900 180 1400 561~

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                                                                     ~517 2 5562 0 0020 0 2000 0 01()9 011 11 '.11 0 62 061 062 0 62 7]0 I 40 l 10 12 01 11 ';2 9 42 11194 8 17 nm 1~3 1621 1829
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ceu 4A INSLOPf s 80 5599 5560 25 93 0 04 2 00 47 62 5 90 CELL 4A llf!EAC H [15 ~562 5560 0_,42 ___ 0 9, 7 80 H 44 0 38 /057 _, I _.--*---*--**- '-*---" i-,- . Fi.OW PAR.AM£ ftRS IN cr.u 4A BRf ACH Al PlAK PMF DISCttARCif e, .... h -r a,;.."; 8Jt'l/t,,j~. M~nrm-u fluw-* - [ ~ttowiftW. RK~M,1 I fjt)Ut)Pl ~1d1* ' ~ ,lilf!llfl'I '.o~tl (Jri, I ,t9'<,' li 0.pth t < HI?;,~ ':if'1 !1t,r1 *f,-tfritu!t( ,fd~)' 6 I 'J*1ot,ll)f i-'P,0. ')!{I" W.:fll* Ii 5Nltit'!> _;1af1Jt*'!I \ A.rt-a

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Srnl I SM! Cht1nnel 60 "JI 0 0073 (I 481i 3 JI l.111 2 91 485 JI 1.117 2 4 11 Rcx:k Channel 60 J 1 0 (Xil:J 0 015 405 3.05 1109 2 66 406 n 9.711 8-10 Soll (SM) Channel BO  :! 1 O 0073 0 03 486 l 90 6/J 2 62 489 90 1.07 14 9.5 I Roell Channel 80 3 1 I) ()()/:1 o o,~ 405 2.60 J.'!J '.I l ]l 406 61 905 8 HJ Relerertce 1 Fig 4 11 NUREC, CR 46l0 I DEPTH OF SCOUR OF CELL 4A BREACH CHANNEL I All methods used are from Pemberton l l d*

• deplh of scour ft q
• urnt drncr,arge d'llft anct JI '< 11r<1 1984 *computmg D,igradat1on and Local Scour" fechmca1 Gwclelu1e for Bure11u or Rectamat,on

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• constan1 l 4~

8 I I Method Z ds - O 25 dm dm ~ mean wate, d~plh at design d1stha1ge :: ds::: j I) 4 1 2 fj 4.0 I Mett>od 3 ds =0 6°<1!0 I 07 0.7 di" - 4'0 666tr bo'O 33.l , 14 21 3 99 I ~bo , tero tied lactr" , 1 O Ills*'? for fine ~and

                                                                                        ,J, '                                           2 53                                            2.40 o l5

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Melhod4 ds" cJma :i urnl cro:,s sedmn of flow = 3 "J8 il;, ds = 0 845 0 725 I Meli1od 5 UI: dm'tiVrnNC)-1 l Vm ..=. rnea11 velocity ::: 666 80(1 Ve= 2 2 1uel 7 92 I AVERAGE SCOUR DEPTH ft* _______,.J l.&2 3.15 I I

I I ATTACHMENT 11 I I I I I I I I I I ,I I

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I I ATTACHMENT 11 RESPONSES TO NAC COMMENTS 7i17198 AA TIONAt MEtHOO CAICUtA flON OF PMF PUii: OISCliARGE VHOCIT'f' AND Of.P Hf HIROUGH CH L #1 OISCHARGl: CHANNfi I HOWPII~ ttf.Mf,.1! fifMINf lf*N*,t,, MA, 11t,

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A1*TA<:HMENT 12 r r-u, c*> L---------~~~~~~ ',

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International Uranium (USA) Corporation White Mesa Mill ROC,'I APRON AT TOI OP CSU. OUTSLOPI PIOUR£ I AITACHMl!HT 12 OE SIGN. A. KUHN DRAWN A. iaJHN SHEET CHKD BY: DATE: 8/17/98 of I~ APP. SCALE NTS 1

IA'rTACHMINT 12 TA8l.l

• RESPONSH TO NRC COMMENTS 7117198 ROCK APRON UESIGN 'TABLE** TAILING CELL EROSION PROTECTION WHITE MESA MILL f i!*Mf-rt! f i:.Mf r-,r ,I c,,*f R,~~Nf Ai:. ~ e,,1~

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Hie ,~1,tt;;ltlf,tt i!'ltm*fl'nt 1w119rt-1 1-s :411 f't ln1"1 N'J"J 1'il~*J ,1, tf,p, .ti: ,.i',,!1u1*..: r,J., 11,~ r., !l'nt,Jru*,r; Jr.d (Jt'!.-lk *;;,1! ,l:\,. r,,11,.Je fr,a 1t""i*1 tn1 ,~,,., ,,ut~lopt! Ni,'li, a1c,J1at1:4:J t'1t1 ,hJJ! , f,* Tti~ 111o11; tor 111e ,t,f;tor, ,,..,.-u dh \Ji:He<J Pt! Ab! 1k D!!PTH OF l'ICOUR Al OOWNSTREAM 60GE OF rut 4-PFION AH ,nethmhs 1'1;.ttd ~ut, frorn Pttrnburtnn f. L dlld .J M L,Hd 1984 Cornpulinq Dttyr,HLtfl<m r111d lu1:<1I SuH,r' Tediruc.~I Gwdehne fur BtHHr:tH of Roclc;1tr\dl1w1 ds" deptt, ol s1..,,w It 11 2 111111 d,,.r.11a1ge. ds/11 Method 1 d*"'l<'q~0.24 K "' cor>shmt 2 45 q" I 81 dSJ!I 2.82 It Method 2 ds "'0.25 dm dm = rnaa11 wwlat depth ,II d.,s,q11 d1scttary1* ds = 0.22 fl Method 3 ds II O.S.*dfo dfo = q'O 6661Fbn"O J:J fbo " lflfO bad factor "' 1 0 flis' 2 tw !me sa11d ds"' 009 fl M*thod 4 ds "'0.25

• dma dma r. *JIHI cross ,;ocl1or1 ol flow= 0 87 fl ds = 0.22 ti Method 5 ds,. dma*HVmNcH)

Vrn ~ mean valouty = 1 81,0 78 Iµ" Vr "'0 5fp,; ds  :.a 3.17 ff AVERAGE SCOUR DEPTH " 1.30 n minrmum depth ,,1 downstream edge scour bdrrtHr}}