Michigan Dept. of Environment, Great Lakes, and EnergyThis data is used in the Tribar Release Sampling Results interactive web app ( item details ). The Michigan departments of Health and Human Services (MDHHS) and Environment, Great Lakes, and Energy (EGLE) and local officials are working together to protect residents in Monroe, Oakland, Livingston, Wayne, and Washtenaw counties following a release of hexavalent chromium to the Wixom Sewage Treatment Facility from Tribar Manufacturing in Wixom. The sewer feeds the Wixom wastewater treatment plant, which discharges to the Huron River system. Sites shown on the map represent targeted locations. Latitude/longitude coordinates may vary slightly with each visit due to on-site sampling logistics and GPS accuracy. This data was last updated 10/19/22 and shows sampling through 8/25/22. This data shows results for various metals in sediment samples. Field Name Description SiteID Unique ID of the site where the sample was collected WaterbodyName Name of the waterbody the sample was collected Description Description of the site where the sample was collected SampleDate Date of collection LabSampleID Unique ID of the sample QAQCSample Distinction between samples collected for quality control/quality assurance (replicate) Latitude Y coordinate of sample location Longitude X coordinate of sample location Metals Fields: ChromiumVI_mgKG Chromium VI (mg/kg) Arsenic_mgKG Arsenic (mg/kg) Barium_mgKG Barium (mg/kg) Cadmium_mgKG Cadmium (mg/kg) Chromium_mgKG Chromium (mg/kg) Copper_mgKG Copper (mg/kg) Lead_mgKG Lead (mg/kg) Mercury_mgKG Mercury (mg/kg) Nickel_mgKG Nickel (mg/kg) Selenium_mgKG Selenium (mg/kg) Silver_mgKG Silver (mg/kg) Zinc_mgKG Zinc (mg/kg) Learn more about EGLE's spill response by visiting Michigan.gov/EGLETribarResponse . You can view the data behind this map in table format or download the data by visiting our Maps and Open Data Portal . For questions about this data and EGLE's response, contact Michael Alexander at AlexanderM2@Michigan.gov . Hexavalent chromium is a known carcinogen that can cause a number of adverse health effects through ingestion, skin contact or inhalation. Residents with questions about hexavalent chromium, potential health effects or exposures can call the MI Toxic Hotline at 800-648-6942, 8 a.m. to 5 p.m., Monday through Friday. Extended hotline hours will be offered this weekend, Saturday, Aug. 6 and Sunday, Aug. 7, 8 a.m. to 5 p.m. EGLE makes every attempt to ensure data accuracy but cannot guarantee the completeness or accuracy of the information contained within these datasets.ArcGIS FeatureLayerhttps://hub.arcgis.com/datasets/93e6865edb434e5c9b788a5d39d0783b_0engState of Michigan Open Data PortalPublicTribar Release Sediment Metals Sampling Results [Michigan]Web servicesMichiganLast Modified: 2025-09-04