Colorado CDL Hazmat case studies

Colorado CDL Hazmat · Put your knowledge to work in context.

The Colorado CDL Hazardous Materials (H) endorsement is an addition to a Colorado Commercial Driver License that allows a driver to operate vehicles carrying hazardous materials that require placarding, or certain quantities of hazardous materials in bulk packages. It is intended for commercial drivers, tank-vehicle operators, and carriers who move regulated hazardous materials on Colorado roads and interstate routes. The Colorado CDL Hazmat case studies are 5 cases and about 2,563 words.

Placards and Shipping Paper Before Leaving Denver

You are the driver of a straight truck at a Denver warehouse, loaded with 18 drums of UN1263 Paint (Class 3, PG II; 4,000 lb gross) and 10 drums of UN1789 Hydrochloric acid (Class 8, PG II; 1,350 lb gross). The shipping paper lists both materials, but the acid entry has no emergency response telephone number and the paint entry shows 16 drums, not 18.

576 words, about 3 min 2

Cyanide and Acid at a Denver Distribution Center

At a Denver distribution center, you must load a 48-foot dry van with 12 drums of sodium cyanide (UN1689, Class 6.1, PG I; 500 lb), 8 drums of sulfuric acid (UN1830, Class 8, PG II; 1,200 lb), 20 cases of powdered drink mix, and 6 cylinders of oxygen (UN1072, Class 2.2). The dock supervisor wants the cyanide and acid side by side to save time, with the food cases used as filler between them.

505 words, about 3 min 3

Filling and Unloading a Gasoline Cargo Tank

You drive a DOT-406 cargo tank with a 9,000-gallon capacity, delivering gasoline to a Denver station. The terminal plans to load 8,650 gallons at 92°F.

509 words, about 3 min 4

Hydrochloric Acid Leak at a Mountain Rest Area

You are westbound on I-70 near Vail with 1,000 lb of UN1789 hydrochloric acid (Class 8, PG II) in 10 drums. At a rest area, you find one drum leaking from a seam; about 25 gallons has run onto asphalt and is heading toward a curb and a snowmelt drain that leads to Gore Creek.

516 words, about 3 min 5

Placarded Propane Load at the Eisenhower Tunnel

You are westbound on I-70 at Idaho Springs with 8,000 lb of propane (UN1978, Class 2.1) in a placarded bobtail. Your destination is Silverthorne.

457 words, about 2 min