---
kind: "section"
citation: "40 C.F.R. § 194.55"
title: "40"
number: "194.55"
heading: "Results of compliance assessments."
url: "https://uscodex.org/cfr/40/194.55"
---

# §194.55. Results of compliance assessments.

- (a) Compliance assessments shall consider and document uncertainty in the performance of the disposal system.
- (b) Probability distributions for uncertain disposal system parameter values used in compliance assessments shall be developed and documented in any compliance application.
- (c) Computational techniques which draw random samples from across the entire range of values of each probability distribution developed pursuant to [paragraph (b)](#b) of this section shall be used to generate a range of:
  - (1) Estimated committed effective doses received from all pathways pursuant to [§ 194.51](/cfr/40/194.51.md) and [§ 194.52](/cfr/40/194.52.md);
  - (2) Estimated radionuclide concentrations in USDWs pursuant to [§ 194.53](/cfr/40/194.53.md); and
  - (3) Estimated dose equivalent received from USDWs pursuant to [§ 194.52](/cfr/40/194.52.md) and [§ 194.53](/cfr/40/194.53.md).
- (d) The number of estimates generated pursuant to [paragraph (c)](#c) of this section shall be large enough such that the maximum estimates of doses and concentrations generated exceed the 99th percentile of the population of estimates with at least a 0.95 probability.
- (e) Any compliance application shall display:
  - (1) The full range of estimated radiation doses; and
  - (2) **The full range of estimated radionuclide concentrations.**
- (f) Any compliance application shall document that there is at least a 95 percent level of statistical confidence that the mean and the median of the range of estimated radiation doses and the range of estimated radionuclide concentrations meet the requirements of [§ 191.15](/cfr/40/191.15.md) and [part 191](/cfr/40/part191.md), [subpart C](/cfr/40/subpartC.md) of this chapter, respectively.

## Notes

### Authority

Authority: Pub. L. 102-579, 106 Stat. 4777, as amended by Pub. L. 104-201,110 Stat. 2422; Reorganization Plan No. 3 of 1970, 35 FR 15623, Oct. 6, 1970, 5 U.S.C. app. 1; Atomic Energy Act of 1954, as amended, 42 U.S.C. 2011-2296 and 10101-10270.

### Source

Source: 61 FR 5235, Feb. 9, 1996, unless otherwise noted.