TESTING FOR GROUNDWATER CONTAMINATION AT HAZARDOUS-WASTE SITES

Recently, the United States Environmental Protection Agency issued a new list of chemical substances for use in connection with monitoring groundwater contamination at hazardous waste sites. This list is Appendix IX to Part 264 of Title 40 of the Code of Federal Regulations and was developed to implement the Resource Conservation and Recovery Act (RCRA). The role of Appendix IX under the Regulation is described and the history of its preparation is discussed. The general nature of the analytical procedures is described. Some data for distribution of substances found in the groundwater at various sites are given.