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KAISER PERMANENTE Site Prep #1 Electrical Service <br />ASC & Clinic (HUB) March 18, 2020 <br />Everett, WA Project No. 19.05002.00 <br />E. Mechanical Cleaning Methodology: <br />1. Clean metal duct systems using mechanical cleaning methods that extract <br />contaminants from within duct systems and remove contaminants from building. <br />2. Use vacuum -collection devices that are operated continuously during cleaning. <br />Connect vacuum device to downstream end of duct sections so areas being <br />cleaned are under negative pressure. <br />3. Use mechanical agitation to dislodge debris adhered to interior duct surfaces <br />without damaging integrity of metal ducts, duct liner, or duct accessories. <br />4. Clean fibrous -glass duct liner with HEPA vacuuming equipment; do not permit <br />duct liner to get wet. Replace fibrous -glass duct liner that is damaged, <br />deteriorated, or delaminated or that has friable material, mold, or fungus growth. <br />5. Clean coils and coil drain pans according to NADCA 1992. Keep drain pan <br />operational. Rinse coils with clean water to remove latent residues and cleaning <br />materials; comb and straighten fins. <br />6. Provide drainage and cleanup for wash -down procedures. <br />7. Antimicrobial Agents and Coatings: Apply EPA -registered antimicrobial agents if <br />fungus is present. Apply antimicrobial agents according to manufacturer's written <br />instructions after removal of surface deposits and debris. <br />END OF SECTION 23 31 13 <br />METAL DUCTS 2331 13 - 11 <br />