Oregon’s Leaders In Forensic-Based Drug And Chemical Remediation
Guarantee Biohazard Remediation was built on the principles of forensic-based contamination science. We specialize exclusively in drug residue remediation, chemical contamination cleanup, tear gas decontamination, HVAC system contamination, and encampment-related environmental hazards.
Our approach is rooted in structured assessment, contamination-specific protocols, and disciplined documentation. Rather than surface cleaning, we focus on identifying contamination at its source, evaluating cross-contamination pathways, and restoring properties to safe occupancy standards through controlled remediation.
Under the leadership of Certified Forensic Operator David Hart, our work reflects decades of field experience, innovation, and advancement within the restoration and environmental remediation industries.
Leading The Way In Education
Education is central to our mission. David Hart coined the term Forensic Restoration, a methodology that applies investigative principles to contamination events. For decades, he has refined remediation systems that have advanced standards within the HVAC, indoor air quality, and medical industries.
In addition to continued field operations, David leads professional training programs across the United States and internationally, focused on drug residue remediation, chemical contamination, and HVAC decontamination. His work has influenced industry standards, earned U.S. patents, and includes collaboration with Microbial Warrior Biosecurity International to advance contamination control and biosecurity practices.
Through education, research, and hands-on application, we continue to advance the science of drug and chemical remediation.
Experienced Professionals Dedicated To Forensic-Based Remediation
Our team brings extensive field experience in drug and chemical contamination remediation, operating under the leadership of Certified Forensic Operator David Hart. We follow structured forensic protocols designed to deliver precise, documented remediation that restores properties to safe occupancy conditions.
Licensed, Insured, And Certified
Guarantee Biohazard Remediation operates with appropriate licensing and insurance coverage for drug residue and chemical contamination remediation throughout Oregon. Our work follows structured forensic remediation protocols developed through decades of field experience and industry advancement.
Certified Forensic Operator David Hart brings more than 30 years of expertise in contamination science, remediation system design, and professional training. Our procedures are executed with strict attention to safety, containment, and documentation standards designed to support safe reoccupancy and regulatory confidence.