Draft cleaning protocol specifying isolation techniques, vacuum collection methods, HEPA equipment use, and contamination control procedures for ventilation ducts.
NYC-WTC_000140026Folder label: “EPA HVAC ACTION PLAN (Indoor Clean up)”
OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
Draft 2 Comments by Covino Environmental Associates. Inc. January 5.2003
may be used only if the system is sufficiently isolated and vacuum collection equipment is used to maintain a duct velocity of approximately 3'SBS feet per minute).
Use isolation/zone pillows as necessary to isolate sections of the system, so that sufficient negative pressure is maintained in each work zone and to prevent cross-contamination of cleaned sections by work in sections not vet cleaned.
After cleaning, reinstall the bathroom or kitchen exhaust grille and cover again with polyethylene sheeting secured with painter’s tape to help maintain negative pressure within the exhaust ventilation system before moving on to the next grille. HEPA vacuum interior surfaces of the containment prior to dismantling or moving to another location. Place all waste in a 6 mil polyethylene bag for disposal.
40;Reinstall exhaust grills and-install one layer of 6 mil poly-ever grills-and seeure in place with painters tape.
11.Clean the main riser from the roof-or top most floor of the cleaning zone, using -a combination of techniques including whips, brushes, and compressed air.
12.Reinstall the mushroom once the riser-or top zone is cleaned. I □.Remove the poly barriers, covering-the exhaust grills, while the riser is-still imder negative pressure so that any loose dust or debris will be sucked down to the capture systesfc
14. Disengage the local capture system and relocate to another section of the riser or to another riser.
15. All work will be accomplished by a DEP certified Asbestos Handlers.
16. All work will be supervised by a DEP certified Asbestos Handler Supervisor.
17. Workers will utilize ^^face APR’s. eve protection and full body coveralls during the cleaning process.
18. Ensure that the occupant space is free of any debris associated with the duct cleaning process. Use HEPA vacuums and/or wet wiping to clean the space, as needed. Place waste and debris into double 6 mil polyethylene bags for removal as asbestos-containing waste.
NYC-WTC_000140026
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NYC-WTC_000140015
Technical comments outlining procedures for isolating work zones, maintaining negative pressure, and air testing during HVAC system cleaning.
3 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.933
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000140027
Technical guidance on maintaining air velocity and negative pressure during duct cleaning, HEPA device specifications, and dust containment methods.
4 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.921
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000140014
Technical specifications for the application of encapsulant coatings on ventilation system components, including safety and material requirements.
2 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.909
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000140517
Departmental comments and requests for clarification regarding cleaning triggers, clearance levels, and supervision requirements.
4 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.899
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000140591
Procedural document outlining requirements for cleaning visible debris accumulations and project notifications.
3 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.896
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000140511
Draft document outlining regulations and assistance programs for residential cleaning following the World Trade Center collapse.
4 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.896
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000140603
Contract establishing requirements for third-party asbestos monitoring and air sampling in residential buildings.
4 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.895
machine-extracted · confidence unavailable · Check page ↗4 shared non-person entities · 1 shared topics · similarity 0.949
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machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000162731
EPA submits detailed technical questions and comments on proposed HVAC cleaning procedures for WTC buildings.
4 shared non-person entities · 1 shared topics · similarity 0.922
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000151295
Contract document dated June 11, 2002, outlining scope of work for debris cleanup monitoring and air sampling at the World Trade Center site.
4 shared non-person entities · 1 shared topics · similarity 0.899
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