ML20217H400

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Forwards Rept of NRC Staff Review of Construction Work at Shiprock Project.D Gillen Conducted Review on 851001 & Identified One Issue That Requires DOE Action
ML20217H400
Person / Time
Issue date: 10/18/1985
From: Higginbotham L
NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS)
To: Themelis J
ENERGY, DEPT. OF
Shared Package
ML20138A105 List:
References
REF-WM-58, TASK-TF, TASK-URFO NUDOCS 9710160001
Download: ML20217H400 (9)
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[ UNiito sTATss NUCLEAR REGULATORY COMMISSICN 5 W ASHING TON, D. C. 20655 l OCT 181985 i f Mr. John G. Theme 11s, Project Manager UMTRA Project Office U.S. Department of Energy Post Office Box 5400 Albuquerque, New Mexico 87115 O oear Mr. Themeiis Enclosed for your information is a report of an NRC staff review of the construction work at the Shiprock aroject. Mr. Daniel Gillen conducted the review on October 1,1985, and he has ioentified one iss action. Daniel Gillen. Sincerely, O .s.. g w h d C3 LeoB.Higginddam,4 gT-(L Chief v g Low-Level Waste and Uranium = n Recovery Projects Branch V N Division of Waste Management 4 %@g$, Office of Nuclear Material Safety and Safeguards

Enclosure:

As stated cc Perry H. Diarley, Navajo EPA 9710160001 851125 PDR WASTE WM-58 PDR .~

., ' d'* SHIPROCK ON-SITE CONSTRUCTION REVIEW DATE: October 1,1985 I t.0 CATION: Shiprock, New Mexico PARTICIPANTS: NRC l DOE / TAC RAC NAVAJO EPA D. Gillen K. Carlson D. Sunners P. Charley P. Garcia, (URFO) R. Bearden P. Cate E.Hawkins,(URFO) F. Davis 1 J. Roesch PURPOSE: To conduct a review of construction activities at the Shiprock UMTRA Project i fer assessment of whether the quality control program is functioning in a mai., ' that assures compliance with the RAP and the EPA standards. ENTRANCE IN_TERVIEW day's review would consist of a tour of the site, observation review of records, and an exit interview. Frank Davis described the status of remedial action construction an,d the activitiesthe RAC site manager, would be available to accompany the NRC staff on the site tour.pres SITE TOUR: The RAC personnci conducted the NRC representatives and the other participants on a tour of the site. Activities observed include the following reajor work areas: 1. Pre-wetting of the radon barrier borrow area south of the tailings by means of water guns spraying within a diked area. 2. Stripping of the topsoil in the radon barrier borrow area. 3. Excavation of sands and slimes tailings from the north side of the upper tailings pile. 4 Placement and compaction of silty sand tailings in an area along the east side of the tM 11ngs. 5. Placement and compaction of slimes in a low area between the upper and lower piles +

.t* \\ i 2 Other aspects of the project that were observed include the following: 1. A large excavated area of contaminated material near the southwest corner of the pile; The excavated material has been placed and compacted in the pile and the excavation is awaiting backfill. 2. bottom with Mancos shale and on the sides with ?VC. )ond is lined on the 3. The PVC lined temporary ditches to convey site runoff to the 4. The rock borrow area and has begun in these areas,the arroyos to the east of the pile pond. No work 2-4 weeks. but rock processing is expected to bagin in _ TESTING OBSERVATIONS: n During the site review, the staff observed quality control personnel during U their performance of field moisture / density testing of relocated tailings material. A nuclear density test and a comparison sand cone density test were both pile. performed on silty-sand tailings being alaced on the east side of the The quality control personnel appear (nowledgeable in all f6cets of their testing and inspection duties, and followed appropriate procedures, in perfonning the testing observed. It was noted that the results of the density tests met the specifications, but the moisture was slightly above the specified upper moisture content limit. RECORD REVIEW: The staff selectively reviewed testing and daily inspection records and, with them to be complete and to vertfthe exception of the issue detailed below in with applicable specifications. y performance of construction in accordance ] RESOLUTION OF ISSUES FROM PREVIOUS SITE-REVIEW: site, there were no previous issues to be resolved.Since this was the _ EXIT INTERVIEW: Prior to leaving the site, the NRC staff met with DOE. TAC and RAC discuss issues and observations identified during the site review. personnel to items are as follows: The only ISSUE: 300 moisture / density tests performed to date, at least two tests resulted in moisture contents which deviated from the

1 i 3 specifications. + The specifications call for relocated tailings and k contaminated material to be compacted at moisture contents between o)t: and 2% below optimum This large number of nonconformances had not aeen reported, nor were co.rrective measures taken. and quantitatively assess this nonconformance and provide proposedTh corrective action and resolution of this issue to the NRC for revie i OBSERVATION: processing of rock from the proposed site borrow area w [ 2-4 weeks. Information that was recently submitted in response to NRC HRC comments would result in a significant cost increase. indications from NRC's review of this information are that add Early ({]) ) justificationoftheproposeddesign(includingalternativesconsidered is necessary to complete the review. The NRC quicklytowardresolutionofthisissuegiven.DOEandRACneedtowo construction schedului the potential impact on the e 4 f O i 4 t u_L.-_____-.-__..__-----._.----.-_-_..___-....--...

[t W X4- @ di f. VIORRISON I' Date E NNUDSEN

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NONCONFORMANCE REPORT steien ve. e 10/02/85

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4. Item Loc.auon Area /Bacg.
6. System Rev.
6. Item Name contaminated Material N/A
7. mapecten craena Field Density Testine Document Numoer & Tsue Dwo.O Specfk OmerO fExplain) Shiprock Phase II Specifications
8. Sourse:

Engrgtx Constr.O OmerO tt.xpiain) Name WndorO SubcontractorO

9. P.O. No.

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11. Nonconformance(Discrepancy)Descripton:

Specification 2200 N /A 10. (Ust senal numbers where applicable) _1 Parnerseh 3.2.B. etates in nnre. " Reshaped tailines and relocated contaminated materials shall be compacted to at least 90 percent of maximum dry density at O to 2% below optimum moisture centent...". N (b6) Contrary to thi,s, requirement tests taken were below the 27_ recuirement and $N N9) above optimum moisture. tests were There had been no retests taken for tests which failed due to moisture reoufrements. ~ /r

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13. Field Disposition /

_Jo ff Recommenoaten RewormO RepectO RepairO Route to ChentO Route to Design Agency 4.x Route to MFG.C' l' A. Recommend chancine the stated reouirerneitts to allow a rance of 1% outtmum to $% below optimum. B. If there are areas which remain outside of the recommended change, retest those areas and return to the desien encineer for resolution

14. Feeio Dispositen By:

Date 'Approv&44 a site ' Date /OglW s pg-r- / f , 1 41 ) p o a ;l,Yr.ve N--- - je A*/QT~~ l

16. U.enVDesign Agency Disposition: /

RepairO Reject I Use As iso see Belowk" R$workO 1 Attached P.I.D. Nd. 04-S-7 approved by the site design engineer and deputy desien encineer is approval of the recommended disposition. Approyoo Design Agency

16. Acorovalof VienVMFG./ Design Agency Date
17. Reinspecten

~ Dispositen: PE N- ~ Date . AcceptO _ POE- ... RejectO __ Aum. Inso. .Aum.Inso. _ g i n...

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9 9 hMORRISON-KNUDSEN COPIPANY,INc. UMTRA PROJECT OFFICE PROJECT INTERFACE DOCUMENT site Shiprock, New Mexico l October 2,1985 hite PID lio. Site Ic. orJrimtor una urautn _ 07.-5-7 04 ! bic Fro fe. une urenwrim nw itwtr - - 9. w /nto ISOS) 7A6-p?6 4 h L+y-Mw-sub. pet m p h s_ 1o95 Shiprock Construction Moisture EcqaircTnts for Conta:ninated Material Specification Section hiptica of Probi= ad E a- -, rd Schim 2200 QQmCe ~ 'g % p rk, Par a-cfM'htim PROBIDi: Variability in toisture content arx3 characteristics of tailings makes it i place tailings at specified noisture content.

rpractical to SOLUrlai:

Pcvise Specification Section 2200, Paragrath 3.2.B, to less strirgent rei t r requirenents.

  • Ihis change does not affect the long term stability or settlene t s ure content pile.

n of the g OfRE 'HIIED LINE OF Sm.mCATIGI 70 PSsD, "... 5 E density at +1% above to -51 belcw.... n v / '. Orf h w Y8 j Q

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&/6[2 6 t Eimature h%uAd pir g tica On2 Date r l-r--2048 r== notal a F x site n==crr y, og Q y, -x FE Fro. pet antroldf A_ //f{ khLJ/,7 /:/7 /g 1r reo, = wo m =I rmut mi orascusums ; l'4ja;- s-4 ga g3g- - ,, mM, y g' L2 (AAktM-r x*/s i ex r

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fROM .... w..p,;t..i,'f sJ ', p,.q Shiprock,WM.y.;'/T{c$,l, Fra c .gi" NECA y; c Agg.( . g,Y rg$ M-K .:3 :.,, I f '[Ehiprock,MM 4,p':jn.. i es,.3g , ;g"V, q lp SUBJECT ' Moisture Requirements foY Contaminated Haterial - "tT1 /* ., e s':;r*J l MM,3 , o r s s /P J . '..p. ',).,. ':

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j' y, ! ' '~ dh. 4.L5M N. y>)' ?,E.,'.h ?. m un .r g 4,','. '. Reference is made to our speed Letter dated October 2,1985.. Attached Y}. 2,,..'. i.c ho.)ect Interface Document dated October 2,1985 which revises the requirements of 'W i.#g ')[y,,4 st U,l Specification Section 2200 2aragraph 3.25. You should implement these less stringent L ;;. moisture content requirements as appropriate to fac ^ 7 C.Q. > n :'."'. '}n)'-f .. n.. y 3.) Ni,'x@l ;r:kp L, ' t . ~ 2.c,phh:*.h ~ .A 3 ;:s y .,f'l;;4C es.sr.. 8 :g') }.'. '. ::n:f. .gf.i.5?;L$p%,j-5'. ,.y?,g..,)gp,* g; ; q, y' .c. t WW . 5?$:'.! ,8',* . Q 't 9 4/V October 3o 1985 ~*e-SIGNto-1 ) /' M. ' M ( </. '. w ;.:.r' .g:$&bSk. ,DAtt - poo . /.r y q.g

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~~ ',;pQ.c ~~ .i . go. i . ?.'.t ;,..:,. .n ~.j .. '..q_y;;.. ~ This will confirm the' direction given to you in the afternoon o ' g' t,',;?,).f,v :. ' 'y' 1985. ;.M'E (g.,y ctrictly enforced with regard to the requirement for s

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'd eMaction at 0 to 22 below optin c 6 :.i i - ' ': e,,,;, change to this requirements howeverg/am moisture content.' We are review ia time the current specification @y > soverns all work performed to I. te. d/ m.'(s.,h; '.j. 3.'. ' M ; M 9 m@4 Ocy %$ ' '", ' I / E I' 9hg_ october 2,1985 3 ho,,(.'s 8 hagg3_ M~4 *-b 3 q.. @, 4 ' t-80 //" / Q ',,,gM T ..,n.,,,. Acknowledged l,~ ~ As discussed, we will take corrective action as necessar.. .(... soils testing personnel that an area is above or below the required moisture conte y when 'adviced by M-K ~, .e I,*

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