Food Safety Report: Del Taco, South 23rd Avenue, Greeley, CO, USA 1 year ago • details 54 Suspected food poisoning. Symptoms: Diarrhea, Nausea, Vomiting, Stomach Pain, Cramps, Chills, Headache Suspected source: not sure Onset: 4 to 12 hours Duration: 12 to 24 hours