Devastating Water Intrusion in a New Children's Hospital: How Much Remediation Is Enough?

Abstract

ISSUE: A microburst storm occurred over a new 208-bed children's hospital, resulting in extensive water damage to 265,000 square feet of space. Challenges to remediation efforts included evaluation of water damage, rapid removal of water-damaged materials, assessment for microbial growth, infection control procedures during remediation, and documentation of adequate decontamination through air and surface microbial sampling. PROJECT: Time was of the essence. A multidisciplinary team was formed. A contractor expert in water remediation was hired. Water extraction began immediately. Building materials not completely dried out within 48 hours were removed to a minimum of 2 feet above saturation. Samples for fungal spores were collected before remediation to determine baseline levels. Remediation used proper critical barriers with fire-rates plastic sheeting, air filtration equipment with high-efficiency particulate air (HEPA) filters, wet removal methods, and HEPA vacuuming. RESULTS: Drywall and base molding for approximately 70,000 square feet was removed and replaced. All impacted fireproofing, insulation, and ceiling tiles were removed. Cabinetry was pulled out and inspected. Eighty windows were replaced and resealed. Sampling for fungal spore counts after remediation assisted in documenting proper decontamination. No adverse patient outcomes occurred. LESSONS LEARNED: Water intrusion requires rapid action. Having a remediation plan and knowing local vendors can prevent delays in remediation efforts. Immediate removal of affected cove bases hastens the drying process. Routine inspections of window seals prevent windows from being a source of water intrusion. Using greenboard for rebuilding is advantageous due to its resistance to water penetration. Infection control and safety officers must have front-line involvement and continuously monitor the remediation efforts.