DOHMH guidelines on fungi assessment and remediation, Apr 2000

NYC 9/11 Public Portal Document

(h) AU areas should be left diy and visibly free from contamination and debris.

3J L^vdTO: Large Isolated Areas (30 -100 square feet) - e.g., several wallboard panels.

A health and safety professional with experience performing microbial investigations should be consulted prior to remediation activities to provide oversight for the project

The following procedures ataminiTnum are recommended: * (a) Persoimel trained in the handling of hazardous materials and equipped with respiratory protection, (e.g., N95 disposable respirator), in accordance with the OSHA respiratory protection standard (29 CFR 1910.134), is recommended. Gloves and eye protection should be worn. (b) The work area and areas directly adjacent should be covered with a plastic sheet(s) and taped before remediation, to contain dust/debris. (c) Seal ventilation ducts/grills in the work area and areas directly adjacent with plastic sheeting. (d) The work area and areas directly adjacent should be unoccupied. Further vacating of people from spaces near the work area is recommended in the presence of infants (less than 12 months old), persons having undergone recent surgery, immune suppressed people, or people with chronic inflammatoiy lung diseases (e.g., asthma, hypersensitivitypne onitis, and severe allergies). (e) Dust suppression methods, such as misting (not soaking) surfaces prior to remediation, are recommended. (f) Contaminated materials that cannot be cleaned should be removed from the building in sealed plastic bags. There are no special requirements for the disposal of moldy materials. (g) The work area and surrounding areas should be HEPA vacuumed and cleaned with a damp cloth and/or mop and a detergent solution. (h) AU areas should be left dry and visibly free from contamination and debris.

If abatement procedures are expected to generate a lot of dust (e.g., abrasive cleaning of contaminated surfaces, demolition ofplaster walls) or the visible concentration ofthe fungi is heavy (blanket coverage as opposed to patchy), then it is reSSShTended that the remediation procedures for Level IV are foUowed.

3.4 Level IV: Extensive Contamination (greater than 100 contiguous square feet in an area)

A health and safety professional with experience performing microbial investigations should be consulted prior to remediation activities to provide oversight for the project. The foUowing procedures are recommended:

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