Dozens volunteers took to a notorious illegal dumping site east of Grand Junction to restore the iconic landscape.
A man and woman have been indicted for leaving dangerous chemicals on a street in northeast Denver.
The U.S. Forest Service is investigating claims that a contractor illegally buried the contents of campground toilets on forest land in northern Colorado instead of hauling it to a landfill.
The Colorado Department of Public Health and Environment has notified Arapahoe County Commissioners that a county crew may have violated state laws and regulations when they dumped gallon after gallon of road striping paint.
Investigators sought out and found the site where it appears hundreds of gallons of road striping paint was dumped by a county public works crew.
A CBS4 investigation has uncovered Arapahoe County Public Works employees illegally pumping hundreds, maybe thousands of gallons of paint.
Volunteers cleaning up a shooting range on federal land in western Colorado this spring found 3,500 pounds of trash, three televisions, two propane cylinders and a stop sign illegally dumped there.