Groundwater, surface water, bed sediment, soil, benthic macroinvertebrate taxa, habitat, and biological indices data collected near and at the Open Burning/Open Detonation (OB/OD) Areas at the Letterkenny Army Depot, Chambersburg, Pennsylvania, (ver. 2.0,

Sampling is conducted by the U.S. Geological Survey (USGS) at nine wells, eight surface water sites, three bed sediment retention ponds, and two fields for soil samples at areas near and within the Open Burning/Open Detonation (OB/OD) areas in the Ammunition Area (AA) of Letterkenny Army Depot. Analytical results for groundwater samples collected from 2018-2021 are provided in “OBOD_wells_data_2018-2021.xlsx”. Analytical results for surface-water samples from 2018-2021 are provided in “OBOD_sw_data_2018-2021.xlsx”. Benthic macroinvertebrate taxonomic data collected from 2018-2021 at three streams are provided in “OBOD_benthic_taxa_2018-2021.xlsx”. The biological metrics for the benthic macroinvertebrate data are provided in “OBOD_benthic_metrics_2018-2021.xlsx”. Analytical results for soil samples collected from 2019-2020 are provided in “OBOD_soil_data_2019-2020.xlsx”. Analytical results for bed sediment samples collected from 2018-2020 are provided in “OBOD_bed_sediment_data_2018-2020.xlsx”. The data files with analytical results also include quality assurance/quality control sample results.