Targeted National Sewage Sludge Survey, Statistical Analysis Report, Appendices

摘要

This Sampling and Analysis Technical Report (Technical Report) describes the sampling and analysis activities conducted by EPA in support of the Targeted National Sewage Sludge Survey (TNSSS). The TNSSS was designed to: (1) obtain updated occurrence information on nine analytes of potential concern, and (2) obtain occurrence information on a number of contaminants of emerging interest identified by EPA and the National Research Council (NRC). The objective of the survey was to obtain national estimates of the concentrations of these pollutants in sewage sludge for use in assessing if exposures may be occurring and whether those levels may be of concern.