Adjustment for Additional Sources of Uncertainty Not Explicitly Considered in the IREP Computer Code

User Defined Additional Uncertainty

• The User Defined Additional Uncertainty can be adjusted to account for the presence of additional uncertainty and bias correction not presently included in IREP.
• The default setting, a lognormal distribution (GM=1, GSD=1), has no effect on the calculation.
• Changing the default settings should only be done after sufficient justification accompanied by a written rationale.