Revision 2.0 by Linda Zarr on April 29, 2024. The data release title was updated from "Groundwater, surface water, bed sediment, soil, benthic macroinvertebrate taxa and biological indices data collected near and at the Open Burning/Open Detonation (OB/OD) Areas at the Letterkenny Army Depot, Chambersburg, Pennsylvania, 2018-2021" to "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, April 2024)". To review additional changes that were made, see "OBOD-Benthic v2.0.txt" in the attached files section.