Statistical Analysis of Ground-Water Monitoring Data at RCRA (Resource Conservation and Recovery Act) Facilities, Interim Final Guidance

摘要

The document provides guidance to RRA Facility permit applicants and writers concerning the statistical analysis of ground-water monitoring data at RCRA facilities. Section 1 is an introduction to the guidance; it describes the purpose and intent of the document, and emphasizes the need for site-specific considerations in implementing the Subpart F regulations of 40 CFR Part 264. Section 2 provides the reader with an overview of the recently promulgated regulations concerning the statistical analysis of ground-water monitoring data (53 FR 39720: October 11, 1988). Section 4 discusses the important hydrogeologic parameters to consider when choosing a sampling interval. Section 4 provides guidance on choosing an appropriate statistical method. Section 5 covers statistical methods that may be used to evaluate groundwater monitoring data when background wells have been sited hydraulically upgradient from the regulated unit, etc. Section 6 includes statistical procedures that are appropriate when comparing ground-water constituent concentrations; and Section 7 presents the case where the level of each constituent is compared historically.