This sub-series is comprised of technical reports published between the years 1996 and 2009 by the California Environmental Protection Agency's Department of Toxic Substances Control (DTSC). Reports document the results of various field studies conducted at the Stringfellow Hazardous Waste Site; summative annual reports are also included. Projects were often contracted by the DTSC and undertaken by outside consulting firms, including ENVIRON Corporation, GeoLogic Associates, Shaw Environmental, Inc., and Tetra Tech, Inc. Reports pertain to multiple topics, including bench-scale testing and groundwater monitoring of the Stringfellow site, and a supplemental feasibility study.