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(^N Appendix E- Detailed Description of Alternative 1: DoFntir2001.1 t Full Removal and Disposal Rev. e rafi Redline/Strikeout I shield waste from precipitation. Demolition activities would be scheduled to occur after the 2 equipment removal is complete and the fixative sealer has been applied to surfaces with 3 smearablc or loose contamination. Scalers would be used to prevent dangerous/radioactive 4 contaminants from seeping/Ieaching out of the waste containment. 5 6 Personnel and equipment leaving the site would present a risk of contaminant migration. This 7 risk would be mitigated by procedural and physical measures. Work procedures would require 8 that equipment used on the site and exposed to dangerous/radioactive wastes be decontaminated 9 before the equipment is released. Personnel working the site would wear proper protective 10 clothing. Protective clothing exposed to dangerous/tadioactive wastes would be controlled in 11 accordance with Hanford Site procedures. Personnel ]taving radiologically contaminated areas 12 would require an exit survey before leaving. 13 14 Hazardous materials are expected to present minimal hazard to personnel or the environment. 15 All waste m 4e&lswaSte would be sampled, tested, and designated as required by applicable or 16 relevant and appropriate requirements (ARARs) and applicable waste acceptance criteria. 17 18 E.1.2 Establish Infrastructure 19 20 Implementation of Alternative 1 remediation activities would rely heavily upon the existing ^ 21 221-U Facility complex infrastructure. Some modification of the existing building and utilities 22 would be necessary to support this alternative. 23 24 E.1.2.1 Modify Existing Infrastructure. Where possible, the existing utilities would be used 25 to support Alternative 1 activities. The basic approach to establishing the infrastructure for this 26 alternative would be to use the existing road network within the complex and relocate water and 27 electrical service terminals outside the perimeter fence. The existing road network surrounding 28 the 221-U Facility would adequately accommodate heavy equipment during demolition 29 operations, as well as waste hauling traffic to ERDF. Additional spurs off paved roadways for 30 heavy equipment access and waste loading activities would be constructed, as required. The 31 existing main crane would be recertified, and the heating/air conditioning systems in the crane 32 cab would be replaced. 33 34 Water mains and sewer pipelines inside the exclusion fence would be terminated and relocated 35 outside the fence. Temporary water lines would be installed, as required, for sanitary 36 requirements, ftre-suppression systems, decontamination operations, and dust control as needed. 37 Main transformers for electric power to the 221-U Facility would be relocated outside of the 38 exclusion fence. Temporary 480-volt electrical lines and panels would be installed in the 39 building as required for lighting, ventilation, and equipment operations. 40 41 E.12.2 Establish Support Facilities. Alternative 1 would also require administrative offices, 42 change rooms, tool rooms, lunchroom, restrooms, and storage rooms. During the initial ^43 equipment removal stage, this support could be provided from the 271-U Building. Its use 44 would only be practical during the initial stages of 221-U modifications. The 271-U Building 45 would be removed to allow access to the 221-U Facility for demolition. Final Feasibility Study jor the Canyon Diryotirion lnitiarive (221-U Facility) um 2003 E-5
Appendix E- Detaiied Description of Alternative 1: DOEIR1,2001-11 I Full Removal and Disposal Rev. 0 1 ft B ^ Redl inc/Strikeout 1 2 Mobile office units would be brought to the site to provide support office space at that point. 3 These facilities would be located outside the perimeter fence that would have been installed to 4 control access into and out of the work zone. A main change room for nonradioactive work 5 would be located outside the exclusion fence. Existing telephone and electrical lines would be 6 used to support office and clerical requirements. Existing Hanford Site fire protection and 7 ambulance services would be adequate for emergency response. 8 9 E.1.2.3 Establish Staging Areas. Personnel staging areas would be included in the space 10 requirement for the support facilities. This would include change rooms, meeting facilities, and 11 other construction activity support areas. Equipment storage, waste queues, decontamination 12 an:as, frisking tents, container storage, and other staging requirements would be included in the 13 layout of support requirements for Alternative 1 activities. 14 15 To facilitate the movement of waste containers out of and equipment and supplies into the 16 221-U Facility, anew truck door would be installed. Vehicle access would involve construction 17 of a road approximately 100 in long from the railroad tunnel connection to 221-U (location of the 18 new truck door) to a tie-in point on the existing 221-U Facility site road network. The road 19 would be designed and constructed to accommodate heavily loaded trucks. 20 ("*N 21 E.13 Modify Facility 22 23 In preparation for the operational phase of this alternative, the 221-U Facility would require 24 modifications. The first step would be to prepare the facility by evaluating it for the intended use 25 and making modifications, as necessary. The existing equipment on the canyon epereting-deck 26 would be removed from the canyon epeFating-dcck and the process cells, reduced in size and 27 volume, and loaded into containers for shipment to ERDF for final disposal. The railroad tunnel 28 would be demolished to improve access to the 221-U Facility. Surface contamination found 29 would be either removed or a fixative applied to prepare the canyon for the start of demolition 30 activities. 31 32 E.1.3.1 Prepare Facility for Use. The 221-U structure must resist loads with safety factors that 33 meet building codes (i.e., American Concrete Institute, American Institute of Steel Construction) 34 for standard occupancy, but containment or serviceability requirements would be minimal. No 35 public access would be permitted; therefore, structural concerns would be for worker safety only. 36 37 The building must be put in a safe condition for work activities. This would require radiological 38 surveys, fixing or removing contamination, building inspcction for industrial safety concerns, 39 and equipment repairs or upgrades to support the operation phase. It is assumed that the 40 271-U Office Building would be needed for support of the preparation phase. Therefore, it must 41 be maintained in a safe condition, as well. 42 - r"`43 E.1.3.1.1 Inspect 271-U. The 271-U Building would be inspected to determine the condition of 44 the building and its equipment. Information for this inspection would help finalize planning for 45 the operational phase of this alternative. The functional requirements of the various activities Final Feasiblliry Stadyjor the Canyon Dispotition )nitiatfve (221-U Facilrry) un 2n07 E-6
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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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(^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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I f^ ^ DOE!RL-2001-29 Ikaft D Redli
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Page 21 and 22: ! ' t^ Project Prepare the existing
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^`} Appendix F - Detailed Descripti
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Appendix F - Detailed Description o
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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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Appendix G -Detailed Description of
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^ ^ t"'^N 1 2 DOElRL-2001-I1 Rev. 9
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t^N (M"N Final Feasibifity Stady ja
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,.r.. . Appendix H - Detailed Descr
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^N i ' (0-1% C Appendix H- Detailed
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f^ ^ DOFJRL-2001-I I Rev. N raft Rc
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^ DOF/RL-2001-11 I Appendix I - Dec
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^ r^, TABLES DOFJRIr2001-11 • Rev
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^ Appendix J- Applicable or Relevan
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t^ ^ Appendix J-Applicable or Relev
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^ Appendia J- Applicable or Relevan
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