This sub-series is primarily comprised of technical reports published from 1983 to 2006 by the United States Environmental Protection Agency (US EPA), Region IX, which covers the Pacific Southwest. Reports document the results of various field studies conducted at the Stringfellow Hazardous Waste Site, as well as proposals for further cleanup-related efforts and activities. Some reports are publications of the federal US EPA. Two reports were prepared for separate federal agencies: the Office of Technology Assessment, Congress of the United States, and the U.S. Geological Survey.

Reports were often contracted by the US EPA and undertaken by outside consulting firms, including Ecology and Environment, Inc., and CH2M Hill, Inc. Reports pertain to multiple topics and projects, including the fast-track remedial investigation feasibility study, the treatability testing program, remedial response activities, pretreatment plant operations, and community relations. Non-EPA affiliated reports also pertain directly to testing at the Stringfellow site.