A Ignacio Junior High School student seats in the back of an ambulance Monday awaiting transportation to Mercy Medical Center after noxious odors thought to be gas from a sewer forced the evacuation of the school and sent over 25 students to the hospital with non-life threatening injuries. Photo by Shaun Stanley/Durango Herald.

Ignacio Junior High School English teacher Kathy Herrera, left, walks past ambulances lined up in front of the school to transport students effected by a noxious gas leak. Students left a Science class shortly after 11 am Monday and started feeling ill as they arrived in Herrera's class. Photo by Shaun Stanley/Durango Herald.<br>

A Los Pinos Firefigher/ Paramedic heads towards the drivers seat of his ambulance to transport Ignacio Junior High School students effected by a noxious gas leak Monday thought to be gas from a sewer that forced the evacuation of the school and sent students to the hospital. Photo by Shaun Stanley/Durango Herald.<br>

Ignacio Junior High School students gather outside of the school Monday after a gas leak forced the evacuation of the facility. Photo by Shaun Stanley/Durango Herald.<br>

Ignacio Junior High School administrators are joined by law enforcement and rescue personnel in the parking lot of the school as students are transported to Mercy Medical Center after noxious odors thought to be gas from a sewer forced the evacuation of the school and sent numerous students to the hospital with non-life threatening injuries. Photo by Shaun Stanley/Durango Herald.<br>

Ignacio Junior High School students are lead to waiting ambulances to be transported to Mercy Medical Center after noxious odors thought to be gas from a sewer forced the evacuation of the school and sent over 25 students to the hospital with non-life threatening injuries. Photo by Shaun Stanley/Durango Herald.<br>

An Ignacio Junior High School student on oxygen awaits for transportation to Mercy Medical Center after noxious odors thought to be gas from a sewer forced the evacuation of the school and sen over 25 students to the hospital with non-life threatening injuries. Photo by Shaun Stanley/Durango Herald.<br>

Ignacio School District Superintendent Rocco Fushetto, left, leads students of Junior High School effected by a gas leak Monday to awaiting ambulances to be transported to area medical facilities for evaluation. Photo by Shaun Stanley/Durango Herald.<br>

Ignacio Junior High School students await transportation to medical facilities Monday after they suffered effects of a gas leak that forced the evacuation of the facility. Photo by Shaun Stanley/Durango Herald.<br>