State oil and gas regulators are investigating reports that environmental consultants falsified results of tests on soil, groundwater and contamination at about 350 locations in Weld County between 2021 and this summer. State oil and gas regulators are investigating reports that environmental consultants falsified results of tests on soil, groundwater and contamination at about 350 locations in Weld County between 2021 and this summer. Environment Phys.org – latest science and technology news stories