Hospitals contain many different areas which require the establishment and verification of pressure gradients for infection control.  Surgery Suites are general positively pressurized to surrounding areas.  Some patient rooms are designed to be either positively or negatively pressurized to surrounding areas depending on the risk to the patient and others. For example, a patient with a highly communicable disease would need to stay in a negatively pressurized room so that airborne contaminants would be contained.  In addition to other TAB services, on a hospital project AIRTEST is responsible for establishing and documenting these gradients.


Providence Colby Campus Cymbaluk Tower 2011Providence Regional Medical Center

AIRTEST provided the TAB services for this 11 story two tower addition to the Providence Everett Hospital. The towers house Emergency Services, 22 surgery suites, 288 In-patient Care rooms and administrative services in 713,000 gross square feet.




St. John’s Medical Center, Longview WA. 1999St. Johns Medical Center

AIRTEST performed the TAB of the 1999 expansion of the medical center.  The expansion included a 4 story parking garage and a 173,400 square floor medical office building and ambulatory care center.  The project included 8 surgery suites and 12 clinics.




Auburn Regional Medical Center Expansion 2002Auburn Regional Medical Center

This 107,300 square foot addition to the Auburn Regional Medical Center included inpatient and outpatient surgery centers, a new Family Birth Center, 51 patient beds and an expanded Emergency Services Department.