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Tropical Storm Allison Memorial Hermann Medical Center Campus – Flood Recovery

Client:                 Memorial Hermann Healthcare System
Location:             Houston, Texas, U.S.A.
  • Construction
  • Healthcare


During Tropical Storm Allison, the Houston Medical Center experienced massive flooding and the complete shut-down of this full service teaching Hospital and Trauma Center – for the first time since its circa-1900 opening. Herman was the only facility serving the Houston Medical Center with key critical services such as patient burn care, shock trauma care, and NICU until operations could be reestablished. The disaster especially struck the three basement levels housing critical laboratories and vital services including pathology and hematology with sustained flooding. The location experienced a complete loss of power, fresh water supply, and emergency services including Life Flight; time was of the essence to save lives.

Fully flooded basement laboratory following de-watering

Extensive cleanup of hazardous/biohazardous wastes throughout basement levels


TGE served as First Responders on behalf of Memorial Hermann Healthcare for over 3 months (24/7), devising remediation and engineering strategies to sanitize trapped storm water prior to municipal discharge under scrutiny by the public and press. TGE was first to enter all affected areas to identify hazards, plan emergency mitigations, pre-screen areas for scope planning, and direct clean-up contractors in executing industrial hygiene and environmental compliance strategies to manage regulated, hazardous, and biological wastes. Operations necessitated:


  • Preparation and execution of sanitization strategies and confirmatory testing for potable water systems and biologically contaminated wastes
  • Preparation and oversight of medical gas system sanitization and performance testing with specialty vendors
  • Assisting healthcare professionals in accessing and decontaminating key, irreplaceable equipment from sub-basement areas
  • Preparation of work plans for removal and lab packing of pharma from restricted/controlled areas
  • Preparation of pathway of demolition plans and specifications for asbestos, mold, hazardous materials inventory, and removal of impacted materials and wastes


With TGE on the team, the facility began certain critical services within 3 months of the storm/complete shut-down. Expedited re-opening was possible once TGE’s clearance sampling proved each key area was ready for re-use.

Tropical Storm Flooding Emergency Response, Houston Medical Center, Texas


Fully flooded basement laboratory following de-watering


Basement laboratory hazardous wastes


Fully flooded basement laboratory following de-watering