View Document Here - Hanford Site
View Document Here - Hanford Site
View Document Here - Hanford Site
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
Appendix G- Detailed Description of Alternative 4: DOEIRI.-2001-1l<br />
^ Entombment with Internal and Extertial Waste Disposal Rev. I Drrft B<br />
RedlindStrikeout<br />
2 • Limit access to the environmental cap<br />
3<br />
4 • Maintain the integrity and effectiveness of the final cover (engineered barrier), including<br />
5 making repairs to the barrier, as necessary, to correct the effects of settling, subsidence,<br />
6 erosion, or other events<br />
8 • Maintain and monitor the groundwater monitoring systems<br />
9<br />
10 • Prevent runon and runoff from eroding or otherwise damaging the final cover (engineered<br />
11 barrier)<br />
12<br />
13 • Protect and maintain surveyed benchmarks.<br />
14<br />
15 Post-closure care would consist mainly of periodic inspections to identify erosion or settling.<br />
16 Either of these items could lead to infiltration of the barrier. If settling is identified, the resultant<br />
17 depressions would be filled and reseeded. The post-closure cost estimate includes replacement<br />
18 of the engineered barrier after 500 years.<br />
19<br />
20 Monitoring of the barrier and the vadose zone or groundwater would be performed over the<br />
^21 1,000-year performance period to verify the effectiveness of the waste placement activities and<br />
22 containment provided by the engineered batrier. Periodic sampling of monitoring stations would<br />
23 be performed followed by comprehensive laboratory analyses.<br />
24<br />
25<br />
26 GA REFERENCES<br />
27<br />
28 10 CFR 835, "Occupational Radiation Protection," Code ojFederal Regulations, as amended.<br />
29<br />
30 64 FR 61615, 1999, "<strong>Hanford</strong> Comprehensive Land-Use Plan Environmental Impact Statement<br />
31 (HCP EIS), <strong>Hanford</strong> <strong>Site</strong>, Richland, Washington; Record of Decision (ROD)," Federal<br />
32 Register, Vol. 64, No. 218, pg. 61615 (November 12).<br />
33<br />
34 BIB, 1998, Environmental Restoration Disposal Facility Waste Acceptance Criteria,<br />
35 BHI-00139, Rev. 3, Bechtel <strong>Hanford</strong>, Inc., Richland, Washington.<br />
36<br />
37 BHI, 2001a, Canyon Disposition Initiative: Preliminary AIARA Evaluation for Final Feasibility<br />
38 Study Alternatives 1, 3, 4, and 6 (CCN 089828 to G. M. MacFarlan, Bechtel <strong>Hanford</strong>,<br />
39 Inc. from J. C. Wiles and It. C. Free, Jr., May 31), Bechtel <strong>Hanford</strong>, Inc., Richland,<br />
40 Washington.<br />
41<br />
42 BHI, 2001b, Supplemental Waste Acceptance Criteria for Bulk Shipments to the Environmental<br />
("*N43 Restoration Disposal Facility, 000oX-DC-W0001, Rev. 2, Bechtel <strong>Hanford</strong>, Inc.,<br />
44 Richland, Washington.<br />
Final Feasibility Smdy jor the Canyon Disposition initiatPve (221-U Facility)<br />
J une IOn^<br />
G-25