UC Davis Welding Emissions Reports Categories Topics Airborne Toxics Programs Air Toxics Program, AB 2588 Air Toxics "Hot Spots", Welding Emissions Tipo Information Contact Email helpline@arb.ca.gov Phone (800) 242-4450 In 2001 the California Air Resources Board (CARB) identified hexavalent chromium emissions from welding as a pollutant of concern and contracted with Dr. Dan Chang (UC Davis) to investigate and improve upon existing welding emission estimates. To learn more about this research, view the Summary Report. To see the entire report with the data analysis, view the Research Report and Data Analysis Spreadsheet. Related Resources California Environmental Quality Act Letters for Freight Facilities Federal Clean Air Act - Section 301 (Title III) Activities and Information West Oakland Study