Michigan Dept. of Environment, Great Lakes, and EnergyThe estimated depth to the 2023 1,4-dioxane was created utilizing the latest RockWorks project database files on February 27, 2024 from RockWare Inc. The grid file titled 2023_Depth_To_7.2_Or_Higher.RwGrd. was created from the Rockworks geochemistry solid model titled 2023-01-01_to_2023-12-31.RwMod. The grid file was converted to contour lines in ArcGIS and posted to ArcGIS Online. This is the latest version of the Depth to Dioxane data. An earlier vintage is available at: Gelman Site of 1,4-Dioxane Contamination - Depth to Dioxane (2020 Data) . Field Name Field Description Contour Depth in feet below ground surface to groundwater at or above 7.2 parts per billion 1,4-dioxane Contour_text The text label for the contour MERGE_SRC RockWorks grid file from which the contour line was created from This data is used in the Gelman Site of 1,4-Dioxane Contamination web map ( item details ). If you have questions regarding the Gelman Sciences, Inc site of contamination contact Chris Svoboda at 517-256-2849 or svobodac@michigan.gov . Report problems or data functionality suggestions to EGLE-Maps@Michigan.gov .ArcGIS FeatureLayerhttps://hub.arcgis.com/datasets/5c842fed142d4ad6a049f7b6eceab0d1_9engState of Michigan Open Data PortalPublicGelman Site of 1,4-Dioxane Contamination - Depth to Dioxane (2023 Data) [Michigan]Web servicesMichigan2023