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NOTICE: Effective January 1, 2021, PUC no longer issues Hazardous or Nuclear Materials permits. SB20-118 modified §§42-20-201 and 501 C.R.S. and removed responsibility for issuing hazardous materials and nuclear permits from the PUC and transferred the responsibility to the Colorado Department of Transportation (CDOT). Please visit the Colorado Oversize Overweight Permitting and Routing (COOPR) System at coopr.codot.gov. FAQs at freight.colorado.gov/route-planning/hazardous-materials-routing. Questions for CDOT, call 800.350.3765 or 303.757.9539.