Licensed Pre-Demolition Asbestos Surveys in Seattle

Our pre-demolition asbestos surveys in Seattle are meticulously conducted in accordance with EPA National Emission Standards for Hazardous Air Pollutants (NESHAP) under 40 CFR Part 61, Subpart M, and Washington State's WAC 296-62-07712. An AHERA-certified building inspector performs a comprehensive, destructive investigation to identify all regulated asbestos-containing materials (RACM), including both friable and non-friable materials that may become friable during demolition. The process involves systematically accessing structural and architectural components, including penetrating walls, ceilings, and floors. We sample all suspect homogeneous materials, categorizing them by functional space. Sample collection follows strict protocols to prevent cross-contamination, using wet methods and sealing sample points immediately. Sample quantities and locations are documented on architectural drawings and in a detailed log. For analysis, we utilize Polarized Light Microscopy (PLM) via EPA Method 600/R-93/116 for initial identification and quantification of asbestos content. For materials like vinyl floor tiles where fibers are embedded in a dense matrix, we employ Transmission Electron Microscopy (TEM) for more definitive analysis to overcome PLM limitations. Our final survey report is a legally binding document required for your demolition permit application with the Seattle Department of Construction & Inspections (SDCI). The report includes a full inventory of all ACM identified, their precise locations, quantities in linear or square feet, condition assessment (friable/non-friable), and analytical laboratory results with a full chain-of-custody. This comprehensive documentation is critical for obtaining permits, developing the abatement contractor's scope of work, and ensuring complete regulatory compliance before any demolition activity commences, thereby mitigating liability and preventing costly project stoppages.