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Appendix E - Detailed Description of Alternative 1: DOElRL.200t-11<br />

I Full Removal and Disposal Rev. A ra P<br />

Redlinc/Slrikenut<br />

ATTACHMENT El - FUNCTIONAL HIERARCHY<br />

1 E.2.1.7 D&D External buried piping around 221-U within 23 meters of building<br />

2 E.2.1.7.1 Remove air tunnel outside 221-U<br />

3 E.2.1.7.2 Remove, cut and plug misc yard piping<br />

4 E.2.1.7.3 Disposal at ERDF<br />

5<br />

6<br />

7 E.3 CLOSE THE COMPLEX<br />

8 E3.1 Backfill 221-U excavation<br />

9 E.3. 1.1 Place clean concrete rubble in excavation<br />

10 E.3.1.2 Load/haul backfill from stockpile area and from borrow source<br />

11 E.3.13 Spread and compact backfill<br />

12 . E.3.2 Revegetate site<br />

13 E.3.2.1 Prepare all disturbed areas for surface restoration<br />

14 E.3.2.2 Apply approved seed mix and soil fixative<br />

15 E33 Pick up and clean the complex<br />

16 E3.3.1 Remove excess equipment and materials<br />

17 E.33.2 Conduct final walkdown<br />

18 E3A Sustain Post Closure<br />

19 E.3.4.1 Establish institutional controls<br />

20 E.3.4.1.1 Establish access restrictions<br />

21 E.3.4.1.2 Establish deed restrictions<br />

22 E.3.4.1.3 Establish restrictions on use of the complex<br />

Final Feasi6ifiry Study jor the Canyon Disposition Initiative (221-U Facility)<br />

June 200; E-22

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