Materials Balance 1979 and

In a forerunner of fhe current practice of life cycle analysis, the US EPA commissioned a mass balance on chlorobenzenes in 1979. The study was intended to determine, within the constraints of time and information availability, the quantities of chlorobenzenes annually released to the environment and the sources of those releases [54, p. 1-1]. At that time, regulators knew relatively little about the environmental fate of 1,4-DCB, simply that it [u]ndergoes degradation at a moderate to rapid rate. It is degradable 

Product Stewardship Life Cycle Analysis and the Environment 

These early life cycle assessments provided estimates of exposure and risk in the United States that do not appear to have been revisited since. The US EPA has collected some relevant data under the Toxics Release Inventory (TRI) Program, however, which are presented in Section 4.2.7. 

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