The issue specific to Colorado on HWY 50 has led to some work on behalf of the Colorado Energy office. End Use customers that have been using Regular Diesel in lieu of dyed Diesel because of the logistical challenges around the Montrose area, can take advantage of the following process if you meet the minimum thresholds.
The IRS reminds us about the avenue to get that federal tax back for the use of regular diesel in off-road farm equipment -- that typically uses red diesel-- Please refer to the link below.
Form 8849 - Schedule 1, Type of use 1 (On a farm for farming purposes)