Testing and Performance Criteria for Stabilized/Solidified Waste Forms - Stabilization and Solidification of Hazardous, Radioactive, and Mixed Wastes - page 307

Perform Level 1 Testing

Pass

Unrestricted
Utilization
A

Perform Level 2 Testing

Compare Level 1
Criteria for A

Fail

Pass Pass

Controlled
Utilization
B

Compare Level 1
Criteria for B

Compare Level 2
Criteria for B

Fail

Fail

Ye s

Is B Preferred?

No

Pass Pass

Sanitary
Landfill
C

Compare Level 1
Criteria for C

Compare Level 2
Criteria for C

Fail

Fail

Ye s

Is C Preferred?

No

Pass Pass

Segregated
Landfill
D

Compare Level 1
Criteria for D

Compare Level 2
Criteria for D

Fail

Fail

Alternative
Solution

FIGURE 11.2 Decision flowchart for evaluation of S/S waste forms. 15

criteria for disposal in a sanitary landfill (“D”), it must either be disposed in a secure
landfill or, preferably, subjected to a new treatment technique and re-evaluated.
The rationale for selecting performance indicators and performance criteria is
given in the original document. 15 Testing methods are recommended for each per-
formance indicator in Table 11.8. For each testing method, the source is identified,
the main features are described, and potential problems are discussed. Methods
requiring improvement or alternative methods are mentioned where appropriate.
Performance criteria for each of the four utilization and disposal scenarios are
proposed in Table 11.9 and Table 11.10.

11.7 SUMMARY

This chapter has presented the range of test methods available for the assessment
of S/S materials and also treatment. The most commonly used tests, namely leach-
ability, UCS, hydraulic conductivity, and durability, were detailed. It is also clear