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(^N 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 r,.NZO 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 ^43 44 45 Appendix H- Detailed Description of Alternative 6: DOE/RI.-2001-11 Close in Place - Collapsed Structure Rev. jp_PrjLU RIdUns&S.trikmm F'ill material on the southeast side of the canyon would be graded and compacted to provide a firm working area for scaffolding and other construction equipment access. HAS Manage Hazardous Materials Dangerous waste, asbestos, polychlorinated biphenyls, and other hazardous materials would be removed from all areas of the complex and managed in accordance with ARARs. All waste materiaie waste would be sampled. tested, and designated as required by ARARs, and treated prior to disposal. Products consisting of or containing hazardous materials would be used and managed in accordance with their respective Material Safety Data Sheets. Waste ma:eri°msWaste would be treated as required. A temporary waste accumulation laydown area would be established to facilitate shipment and disposal activities. This area would conform to established requirements for the maintenance, accountability, inventory, labeling, and transportation of waste to approved disposal facilities. H.2 OPERATE THE COMPLEX Operation of the complex for Alternative 6 refers specifically to tasideg)puting the two renneining er aileries at 221-U and demolition of the roof and upper wa11s of the building. In previous steps, the area surrounding 221-U has been prepan:d to support building demolition, all equipment within the building has been removed, and exposed surfaces inside the canyon have been decontaminated or a fixative applied. The roof would remain in place over 221-U during gal^ groutin and ivaste-placement of legacy equipment operetieus-into the process cells to minimize the potential for precipitation entering the building during this activity. The steps to operate the complex are discussed below. The volume of e ac waste placed inside the collapsed structure in Alternative 6 is estimated as 4j4003.4t)D in3. This ineludes3,d90-m°-ef volume is the legacy equipment placed inside the process cellsend1:690-m° . An estimated 43,3903.300 ms (17,6904.100 yd3) of grout would be used in this alternative to surround the cgac waste and fill voids in the process cells,t An estimated 11.300 me (14.800 y(z) of Prout wi ll s hot pipc trench, galleries, and the building's ventilation tunnel. ( H.2.1 Emploee WasteGroutine of ie-221•U Galleries For this alternative, po waste weuld^placed-inplacement is planned_for the two lower galleries. , nstead, each gallery would be totally filled with ¢routed to provide support for the wastes ernvironmental cap placed above. tieM#e Final Feasibility Study jor the Canyon Disposition Initiative (221 •U Facility) un 1 l 11-15
1 2 3 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 n 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 (----,43 44 45 Appendix H- Detailed Description of Alternative 6: DoE/2t.-2oo1-11 Close in Place - Collapsed Structure Rev. 10 nraft R R d^ linc/Strikc%tt plaeement end-greuting H4.1.$-1.}2.1.1 Grout Electrical Gallery. Cement grout would be placed I on !he eeRt-.:---.starting with the electrical ¢allery. Grout will be delivered into the gallerv t hrou gh an existine rectangular ooeninr in the floor slab above. Flowable cement grout could be obtained with a strength of 14 kg/cm2 (200 Ibrn). This could be pumped under low pressure, just sufficient to positively t'ilI voids and prevent shrinkage, and would provide the necessary support to the second floor so it can be filled and grouted. 6reutingtaeh Grouting would be done in lifts to maintain loading on the gallery walls to an acceptable level. An additional benefits ere js the heat of hydration would occur over a longer time. By limiting the grout lifts to half the gallery wall height and waiting for the grout to reach adequate strength, the grouting could occur without backfill in place on the wall's exterior. Grout amendments, such as fly ash or zeolite clays, would be considered for all gouting activities to reduce potential for leaching of radioactive isotopes. GrouEPleeed aFeund edgeef(he4leeFaiebs: Final Feaxibiliry Study Jor the Canyon pitparition Initiative (221•U Facility) J une 200 3 H-16
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AR TARGET SHEET The following docum
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(^N r^ r Proposed Plan for the Cany
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i^ f 1 2 3 S 6 7 8 9 11 12 13 14 15
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(^N (0-^, (^N 1 2 3 r• • .`•
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^ (^N t^ the steHitFths+amedielaeti
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o"N DOF/RIr2001-29 Draft D Redline/
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(^N i0,"% / ' DOF/RL-2001-29 Draft
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fO'^, ^ 1 2 3 4 5 6 7 8 9 10 11 12
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I f^ ^ DOE!RL-2001-29 Ikaft D Redli
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^ ^ ^ 1 1 119 12 13 14 15 19 17 1 I
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! ' t^ Project Prepare the existing
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f ' ^ rN 100 I Noise, Visual, and A
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^ POINTS OF CONTA CP ^ U.S. Drnartm
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f^ n DOF/RL-2001-29 Draft D Redlinc
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noFIRL-2001-11 Rev. p 1 1)raft P ^
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^ ^ 1 2 DOFJRL-2001-11 Rev.A 1 Dra(
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. . .,.. Appendix C - Risk Modeling
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t^ Appendix C - Risk Modeling of an
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(_^% ^ ^ 11 Appendix C - Risk Model
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(0"% t^ DOFJRL-2001-1 l Rev. N 1 Dr
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1 ' ^ ^ DOEJRL-2001-1 t Rev.H1 nraf
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Appendix D- Slope Stability Analysi
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Appendix D - Slope Stability Analys
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(^N Appendix D- Slope Stability Ana
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• Appendix D-Slope Stability Anal
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^• r^, r^ 2 3 4 5 6 7 Appendix D-
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^ Appendix D-- Slope Stability Anal
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^ (00h^' ^ 2 DOFIRI^2001-I I Rev. J
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t^` ^ ^ 1 2 DOFJRL-2001-11 Rev. JDr
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Appendix E - Detailed Description o
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Appendix E- Detaiied Description of
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t^' Appendix E -Detailed Descriptio
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f,^N Appendix E - Detailed Descript
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(0^s 1,^N Appendix E - Detailed Des
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i^ r^'. ^ 1 2 DOFJRL-2001-11 Rev. 8
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^ ^ t^ 2 DOEIRL-2001-11 Rev. H Ihaf
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Appendix F - Detailed Description o
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Appendix F -Detailed Description of
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Appendix T- Detailed Description of
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Appendix F -Detailed Description of
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(O^N Appendix F - Detailed Descript
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Appendix E- Detailed Description of
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..^•. , Appendix F- Detailed Desc
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(^, Appendix F - Detailed Descripti
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(^N f ` Appendix F - Detailed Descr
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Appendix F-Detailerl Description of
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^`} Appendix F - Detailed Descripti
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^ (10^' (^N DOF/RL-2001-11 Rev. AjD
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^N r^ 1 n DOF/RLr2061-1 l ' Rev. I
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1 ^ (^N ^ DoFJRL-M-t t ^ Rev. I Dnf
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Page 167 and 168: t^N (M"N Final Feasibifity Stady ja
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