Food Safety Report: Firehouse Subs Mesa Verde, 2701 Harbor Blvd, Costa Mesa, CA 92626, United States 2 years ago • details 35 Comments Comment Suspected food poisoning. Symptoms: Nausea, Vomiting, Fever, Stomach Pain, Cramps, Chills, Headache Suspected source: unsure Onset: 4 to 12 hours Duration: 12 to 24 hours