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Appendix G- Detailed Description of Alternative 4: DOEI[ur2001-11<br />
Entombment with Internal and External Waste Disposal Rev. e l DrafW<br />
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ATTACIiMENT GI -FUNCTIONAL HIERARCHY<br />
G.1.43 Earthwork to prepare working area adjacent to 221-U<br />
G.1.4.5.1 Prepare area along northwest side<br />
G.1.4.5.2 Prepare area along southeast side<br />
G.1.5 Manage Hazardous Wastes<br />
G.1.5.1 Identify waste generated<br />
0.1.5.2 Prepare inventory of waste shipments to ERDF and elsewhere<br />
G.2 OPERATE EXISTING COMPLEX<br />
G.2.1 Emplace Waste In 221-U Galleries<br />
G.2.1.1 Fill Electrical Gallery with containerized waste<br />
G.2.1.2 Grout Electrical Gallery through Pipe Gallery floor<br />
G.2.13 Fill Pipe Gallery with containcrized waste<br />
0.2.1.4 Grout Pipe Gallery through Operating Gallery floor<br />
G.2.1.5 Fill Operating Gallery with containerized waste<br />
0.2.1.6 Grout Operating Gallery<br />
G.2.2 Emplace Waste In 221-U<br />
G.2.2.1 Modify Canyon End Walls<br />
G.2.2.1.1 Reinforce end walls with installation of steel beam grid<br />
G.2.2.1.2 Install moveable rollup door for access on southwest end wall<br />
G.2.2.2 Fill Canyon Operating Deck and Crane Way With Waste<br />
G.2.2.2.1 Place cargo containerized waste using forklift<br />
G.2.2.2.2 Grout inside and on exterior of containers<br />
G.2.2.2.3 After layer of containers placed and grouted, pour topping<br />
slab of grout (shielding) and concrete slab (working surface)<br />
G.2.2.2.4 Begin placement of next layer of cargo containers (place 3<br />
layers total). Move rollup door in end wall up with each<br />
layer.<br />
G.2.2.2.5 Place waste containers in craneway<br />
G.2.2.2.6 Place waste in burial boxes for fourth and final layer<br />
0.2.2.2.7 Grout burial boxes inside and out similar to cargo boxes<br />
G.2.2.2.8 Drill access holes through roof for grouting last lift beneath<br />
roof slab. Drill additional holes for pressure grouting under<br />
the roof slab.<br />
C.23 Install Engineered Fill<br />
0.2.3.1 Compacted granular fill against 221-U extcrior walls to closely follow<br />
elevation of waste placetnentinside canyon.<br />
Finaf FeasibilirySrady jor the Canyon DispoaUion lniriative (221•11 Faeifiry)<br />
mc 200 3 G-32