Hazardous Substance:

Welcome to DOE's RQ•Calculator for mobile devices. Enter the name of a hazardous substance or its Chemical Abstract Service (CAS) number in the field above to look up its Reportable Quantity (RQ) or to evaluate whether a release to the environment must be reported to the National Response Center. If you misspell the name of the substance, the RQ•Calculator will return a list of possible alternatives.

Please see our disclaimer before using the results of the RQ•Calculator in making reporting decisions.


imageThe DOE Office of Environmental Policy and Assistance created RQ•Calculator to assist DOE staff and their contractors in determining compliance with the reporting requirements of CERCLA and EPCRA for releases of chemical substances to the environment. The RQ•Calculator program is intended to simplify the determination of whether an RQ was exceeded and provide contact information for the appropriate regulatory authorities.

However, neither the United States Department of Energy, nor any of its employees or contractors, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, calculation, or conclusions derived from this website.

We encourage our website users to independently verify (by your own calculations) any results or decisions with regard to releases of Hazardous Substances or Extremely Hazardous Substances before making reports to the appropriate regulatory authorities.