For facilities requiring a higher level of assurance, Tier 2 services add advanced oversight and certified reporting. This includes evaluating chemical and biological processes for potential contamination, conducting air and surface sampling, maintaining a photo journal of procedures, and delivering a Certified Industrial Hygienist (CIH)-stamped decommissioning report. Clients also receive a Cleaning, Decontamination, and Sanitization Certification Report verifying that the facility is free of hazardous materials and ready for unrestricted occupancy.