This series is comprised of draft and final reports on topics pertaining to the Stringfellow Hazardous Waste Site contamination and cleanup. Aggregations of field data, test samples, and other measurements are contained within documents of varying nomenclature; terms used include "report," "study," "work plan," and "proposal." For descriptive purposes, "report" refers to all such documentation. Material also includes documents written in response to select reports or projects. Titles of formally published reports are italicized; other titles are enclosed in quotation marks. Title punctuation and syntax is not transcriptive, but formulated to facilitate legibility. Select reports are available in both paper and CD formats.

The scientific data represented in the reports was gathered by multiple agencies over the course of three decades. Field study was often undertaken by consulting firms acting as contractors or sub-contractors for larger institutions within the California state government or other private sector organizations. Entities for whom reports were prepared include the California Department of Health Services' Toxic Substances Control Division (later the Department of Toxic Substances Control under the California Environmental Protection Agency), the Pyrite Canyon Group, the Santa Ana Watershed Project Authority, and the United States Environmental Protection Agency, Region IX.