Data to support evaluation of bioremediation of trichloroethene at Site K, Former Twin Cities Army Ammunition Plant, Arden Hills, Minnesota, 2020-2022

This metadata record consists of 16 tables containing data generated from laboratory experiments of trichloroethene (TCE) biodegradation and during field characterization and performance monitoring of a groundwater bioremediation pilot test conducted at Site K, Former Twin Cities Army Ammunition Plant, Arden Hills, Minnesota. The data was collected from December 2020 through December 2022. Laboratory experiment data include concentrations of volatile organic compounds (VOCs) and dissolved hydrocarbon gases including methane and ethene. Laboratory experiments were used to determine amendments for the groundwater bioremediation pilot test. Field data include concentrations of VOCs in soil core samples, information on wells used for the study, groundwater measurements of field parameters, and groundwater concentrations of VOCs, major and minor ions, nutrients, trace metals, dissolved organic carbon, dissolved hydrocarbon gases, and redox-sensitive species including sulfide, reduced manganese, ferrous iron, and methane. Microbial communities in samples and compound specific isotope analysis of groundwater samples were also assessed. Groundwater and soil data were collected for initial site characterization from December 2020 to June 2021 and from October 2021 to December 2022 to establish baseline conditions before addition of pilot test amendments, followed by approximately quarterly and monthly sampling events for performance monitoring of the pilot test. The data within these tables were used to assess natural and enhanced anaerobic biodegradation TCE and other VOCs and the potential to utilize bioremediation as a treatment method for the groundwater plume at Site K.