T.I.E.R. Technical Industrial Emergency Response Services, LLC (TIER) is a pioneering oilfield service company headquartered & operating mainly out of Midland, Texas. The services they offer include permit writing, confined space & trench excavation supervision, firewatch & hot work supervision, IDLH surveys, emergency rescue teams, oil spill response, remediation, tank cleaning, hydroblasting, disaster response & biohazard security & disinfection. Their state of the art services