Performance Assessment for the E-Area Low-Level Radioactive Waste Disposal Facility at the Savannah River Site: Chapter 9

Abstract

This chapter summarizes the results of PA compliance against all relevant PA POs and measures. The final inventory limits presented in Chapters 7 and 8, as well as the methodology employed, provide assurance that POs will be met throughout the compliance periods. Deterministic and stochastic closure analyses also demonstrate a minimal likelihood of exceeding POs. Potential peaks post compliance are also addressed where future work is proposed to improve the understanding in actual uncertainties. Section 9.1.1 summarizes predicted peak doses and concentrations versus POs for the compliance and post-compliance periods.  Section 9.1.2 provides details on the deterministic and stochastic closure analyses completed using a 2065 projected closure inventory for all ELLWF DUs. The deterministic results support the final inventory limits, while the stochastic results yield insight into the probability of exceeding POs.  Section 9.2 discusses the primary uses of the PA2022 results and interpretations.  Section 9.3 outlines potential future work intended to strengthen the assessment that continued operations of the ELLWF will, at a higher level of confidence, be protective of human health and the environment.