This document is an updated version of Part III “Summary of Techniques used to quantify the amounts of chemicals found in transfers” that was published in 2005. The scope of this compendium is to describe methods and considerations for determining quantities of a pollutant that has been released into the environment or otherwise managed as waste. This document provides an overview of example transfers that contain chemicals of concern, the sources of those transfers, the chemicals included and management methods for these transfers. The techniques described could also be used to estimate on-site transfers or on-site releases of the quantities of the same pollutant.