Steamboat Springs Alcohol and drugs were not a factor in a semi trailer crash that took the life of a 34-year-old man Monday morning on Rabbit Ears Pass, Routt County Coroner Doug Allen said.
A toxicology test conducted on the body of Stanley Nathan Perez showed no sign that alcohol or drugs were in his system, Allen said.
Perez was killed early Monday morning after his semi truck that was pulling a tanker carrying 8,500 gallons of fuel rolled over at about mile post 140 of U.S. Highway 40.
A toxicology test was conducted because the accident occurred while Perez was working.
The Colorado State Patrol continues to investigate the crash they believe was caused by a combination of speed and inclement weather.
Perez worked for a Denver-based trucking company, James Inc., and was delivering gasoline to Steamboat Springs.
The Thornton man was traveling westbound on U.S. 40 during snowy, icy conditions when the wreck occurred at about 5:45 a.m. Allen pronounced Perez dead at the scene about 10 minutes later.
According to the autopsy, Perez suffered multiple internal injuries, Allen said.
"He died because of the crash," he said.
According to authorities, Perez was coming down a left-hand curve when he drove off the right side of the road. The truck rolled three-quarters and came to a rest on the driver's side. Perez was crushed under the cab of the red 1997 International.
Thirteen members from the Steamboat Springs and Colorado State Patrol Hazardous Materials teams responded to deal with the fuel.
The team members took precautions in transferring the 8,500 gallons of fuel to another tanker.
In all, about 100 gallons of gasoline were lost because of the incident.