Mold Remediation in Schools and Commercial Buildings, March

2

3   May be dried in place if there is no swelling and the seams are intact. If not, then discard and replace.  Ventilate wall cavity.

4

5

6 Less than 10 ft 2 Clean-up Methods – Use a HEPA vacuum once the material has been thoroughly dried. Dispose of HEPA vacuum contents in well- sealed plastic bags. PPE – Minimum.. Gloves, N95 respirator, goggle/ eye protection. Containment – Not Required.

7 Between 10 ft 2 and 100 ft 2 Clean-up Methods – Use a HEPA vacuum once the material has been thoroughly dispose of HEPA vacuum contents in well-sealed plastic bags. Remove water-damaged materials and seal in plastic bags inside the containment area, if there is one. Dispose of as normal waste. HEPA-vacuum area once it is dried.

8 Between 10 ft 2 and 100 ft 2 PPE – Limited.. Gloves, N95 respirator or half-face respirator with HEPA/P100 filters, disposable overalls, goggle/eye protection. Or, Full.. Gloves, full-face respirator with HEPA/P100 filters, disposable full-body clothing, foot coverings, head gear, goggle/eye protection.

9 Between 10 ft 2 and 100 ft 2 cont’d Containment – Limited.. From floor to ceiling, enclose affected area in poly sheeting with slit entry and covering flap. Maintain area under negative pressure with HEPA-filtered fan. Block supply and return air vents in containment area.

10 Greater than 100 ft 2 Clean-up Methods – Use a HEPA vacuum once the material has been thoroughly dried. Dispose of HEPA vacuum contents in well-sealed plastic bags. Remove water-damaged materials and seal in plastic bags inside the containment area, if there is one. Dispose of as normal waste. HEPA-vacuum area once it is dried.

11 Greater than 100 ft 2 cont’d PPE -- Full.. Gloves, full-face respirator with HEPA/P100 filters, disposable full-body clothing, foot coverings, head gear, goggle/eye protection. Containment – Containment -- Full.. Use 2 layers of fire-retardant poly sheeting with one airlock chamber. Maintain area under negative pressure with HEPA-filtered fan exhausted outside the building. Block supply and return air vents in contained area.

12 Greater than 100 ft 2 cont’d …

13   Remove water with water-extraction system.  Reduce humidity levels with dehumidifiers. Accelerate drying process with fans and/or heaters. ! Don’t use heat to dry carpet. ! Use caution applying heat to hardwood floors. 

14  For all treated and finished woods, porous (linoleum, ceramic tile, vinyl) and non-porous (metal, plastic) hard surfaces, vacuum and damp-wipe with water or water and mild detergent and allow to dry; scrub if necessary.  Wet paneling should be pried away from walls for drying.

15

16

17

18 Less than 10 ft 2 Clean-up Methods – Wet-vacuum the material. In porous material, some mold spores/fragments will remain but will not grow if materials are completely dried. Steam cleaning may be an alternative for carpets and some upholstered furniture. Damp-wipe surfaces with water or with water and detergent solution. (except wood – use wood floor cleaner); scrub as needed. Use a HEPA vacuum once the material has been thoroughly dried. Dispose of HEPA vacuum contents in well-sealed plastic bags. PPE – Minimum.. Gloves, N95 respirator goggle/eye protection. Containment – Not Required.

19 Between 10 ft 2 and 100 ft 2 Clean-up Methods – Wet-vacuum the material. In porous material, some mold spores/fragments will remain but will not grow if materials are completely dried. Steam cleaning may be an alternative for carpets and some upholstered furniture. Damp-wipe surfaces with water or with water and detergent solution. (except wood – use wood floor cleaner); scrub as needed. Use a HEPA vacuum once the material has been thoroughly dried. Dispose of HEPA vacuum contents in well-sealed plastic bags. Use a HEPA vacuum once the material has been thoroughly dried. Dispose of HEPA vacuum contents in well-sealed plastic bags.

20 Between 10 ft 2 and 100 ft 2 PPE – Limited.. Gloves, N95 respirator or half-face respirator with HEPA/P100 filters, disposable overalls, goggle/eye protection. Or, Full.. Gloves, full-face respirator with HEPA/P100 filters, disposable full-body clothing, foot coverings, head gear, goggle/eye protection. Containment – Limited.. From floor to ceiling, enclose affected area in poly sheeting with slit entry and covering flap. Maintain area under negative pressure with HEPA-filtered fan. Block supply and return air vents in containment area.

21 Greater than 100 ft 2 Clean-up Methods – Wet-vacuum the material. In porous material, some mold spores/fragments will remain but will not grow if materials are completely dried. Steam cleaning may be an alternative for carpets and some upholstered furniture. Damp-wipe surfaces with water or with water and detergent solution. (except wood – use wood floor cleaner); scrub as needed. Use a HEPA vacuum once the material has been thoroughly dried. Dispose of HEPA vacuum contents in well-sealed plastic bags. Remove water-damaged materials and seal in plastic bags inside the containment area, if there is one. Dispose of as normal waste. HEPA-vacuum area once it is dried.

22 Greater than 100 ft 2 PPE -- Full.. Gloves, full-face respirator with HEPA/ P100 filters, disposable full-body clothing, foot coverings, head gear, goggle/eye protection. Containment – Full.. Use 2 layers of fire-retardant poly sheeting with one airlock chamber. Maintain area under negative pressure with HEPA-filtered fan exhausted outside the building. Block supply and return air vents in contained area.

23 Greater than 100 ft 2

24  For all treated and finished woods, porous (linoleum, ceramic tile, vinyl) and non-porous (metal, plastic) hard surfaces, vacuum and damp-wipe with water or water and mild detergent and allow to dry; scrub if necessary.   For porous flooring and carpets, make sure that subfloor is dry. If necessary, clean and dry subfloor material according to these guidelines.

25

26 Less than 10 ft 2 Clean-up Methods – Wet-vacuum the material. In porous material, some mold spores/fragments will remain but will not grow if materials are completely dried. Steam cleaning may be an alternative for carpets and some upholstered furniture. Damp-wipe surfaces with water or with water and detergent solution. (except wood – use wood floor cleaner); scrub as needed. Use a HEPA vacuum once the material has been thoroughly dried. Dispose of HEPA vacuum contents in well-sealed plastic bags. PPE – Minimum.. Gloves, N95 respirator, goggle/eye protection. Containment – Not Required.

27 Between 10 ft 2 and 100 ft 2 Clean-up Methods – Wet-vacuum the material. In porous material, some mold spores/fragments will remain but will not grow if materials are completely dried. Steam cleaning may be an alternative for carpets and some upholstered furniture. Damp-wipe surfaces with water or with water and detergent solution. (except wood – use wood floor cleaner); scrub as needed. Use a HEPA vacuum once the material has been thoroughly dried. Dispose of HEPA vacuum contents in well-sealed plastic bags. Use a HEPA vacuum once the material has been thoroughly dried. Dispose of HEPA vacuum contents in well-sealed plastic bags.

28 Between 10 ft 2 and 100 ft 2 PPE – Limited.. Gloves, N95 respirator or half-face respirator with HEPA/P100 filters, disposable overalls, goggle/eye protection. Or, Full.. Gloves, full-face respirator with HEPA/P100 filters, disposable full-body clothing, foot coverings, head gear, goggle/ eye protection. Containment – Limited.. From floor to ceiling, enclose affected area in poly sheeting with slit entry and covering flap. Maintain area under negative pressure with HEPA-filtered fan. Block supply and return air vents in containment area.

29 Greater than 100 ft 2 Clean-up Methods – Wet-vacuum the material. In porous material, some mold spores/fragments will remain but will not grow if materials are completely dried. Steam cleaning may be an alternative for carpets and some upholstered furniture. Damp-wipe surfaces with water or with water and detergent solution. (except wood – use wood floor cleaner); scrub as needed. Use a HEPA vacuum once the material has been thoroughly dried. Dispose of HEPA vacuum contents in well-sealed plastic bags. Remove water-damaged materials and seal in plastic bags inside the containment area, if there is one. Dispose of as normal waste. HEPA-vacuum area once it is dried.

30 Greater than 100 ft 2 PPE -- Full.. Gloves, full-face respirator with HEPA/P100 filters, disposable full-body clothing, foot coverings, head gear, goggle/eye protection. Containment – Full.. Use 2 layers of fire-retardant poly sheeting with one airlock chamber. Maintain area under negative pressure with HEPA-filtered fan exhausted outside the building. Block supply and return air vents in contained area.

31

32   Remove water with water-extraction system.  Reduce humidity levels with dehumidifiers.  Accelerate drying process with fans and/or heaters. ! Don’t use heat to dry carpet. ! Use caution applying heat to hardwood floors.   For porous flooring and carpets, make sure that subfloor is dry. If necessary, clean and dry subfloor material according to these guidelines.

33 Less than 10 ft 2 Clean-up Methods – Wet-vacuum the material. In porous material, some mold spores/fragments will remain but will not grow if materials are completely dried. Steam cleaning may be an alternative for carpets and some upholstered furniture. Use a HEPA vacuum once the material has been thoroughly dried. Dispose of HEPA vacuum contents in well-sealed plastic bags. PPE – Minimum.. Gloves, N95 respirator, goggle/eye protection. Containment – Not Required.

34 Between 10 ft 2 and 100 ft 2 Clean-up Methods – Wet-vacuum the material. In porous material, some mold spores/fragments will remain but will not grow if materials are completely dried. Steam cleaning may be an alternative for carpets and some upholstered furniture. Use a HEPA vacuum once the material has been thoroughly dried. Dispose of HEPA vacuum contents in well-sealed plastic bags. Use a HEPA vacuum once the material has been thoroughly dried. Dispose of HEPA vacuum contents in well-sealed plastic bags. Remove water-damaged materials and seal in plastic bags inside contaminated area, if there is one. Dispose of as normal waste. HEPA-vacuum area once dried.

35 Between 10 ft 2 and 100 ft 2 PPE – Minimum.. Gloves, N95 respirator, goggle/eye protection. Or -- Limited.. Gloves, N95 respirator or half-face respirator with HEPA/P100 filters, disposable overalls, goggle/eye protection. Containment – Limited.. From floor to ceiling, enclose affected area in poly sheeting with slit entry and covering flap. Maintain area under negative pressure with HEPA- filtered fan. Block supply and return air vents in containment area.

36 Greater than 100 ft 2 Clean-up Methods – Wet-vacuum the material. In porous material, some mold spores/fragments will remain but will not grow if materials are completely dried. Steam cleaning may be an alternative for carpets and some upholstered furniture. Use a HEPA vacuum once the material has been thoroughly dried. Dispose of HEPA vacuum contents in well-sealed plastic bags. Remove water-damaged materials and seal in plastic bags inside the containment area, if there is one. Dispose of as normal waste. HEPA-vacuum area once it is dried.

37 Greater than 100 ft 2 PPE -- Full.. Gloves, full-face respirator with HEPA/P100 filters, disposable full-body clothing, foot coverings, head gear, goggle/eye protection. Containment – Full.. Use 2 layers of fire-retardant poly sheeting with one airlock chamber. Maintain area under negative pressure with HEPA-filtered fan exhausted outside the building. Block supply and return air vents in contained area.

38

39

40   Discard and Replace.

41 Less than 10 ft 2 Clean-up Methods – Remove water-damaged materials and seal in plastic bags inside the containment area, if there is one. Dispose of as normal waste. HEPA-vacuum area Once it is dried. PPE – Minimum.. Gloves, N95 respirator, goggle/ eye protection. Containment – Not Required.

42 Between 10 ft 2 and 100 ft 2 Clean-up Methods – Remove water-damaged materials and seal in plastic bags inside contaminated area, if there is one. Dispose of as normal waste. HEPA-vacuum area once dried. PPE – Limited.. Gloves, N95 respirator or half-face respirator with HEPA/P100 filters, disposable overalls, goggle/eye protection. Or, Full.. Gloves, full-face respirator with HEPA/P100 filters, disposable full-body clothing, foot coverings, head gear, goggle/eye protection. Containment – Limited.. From floor to ceiling, enclose affected area in poly sheeting with slit entry and covering flap. Maintain area under negative pressure with HEPA-filtered fan. Block supply and return air vents in containment area.

43

44   Remove water with water-extraction system. Accelerate drying process with fans and/or heaters. ! Don’t use heat to dry carpet. ! Use caution applying heat to hardwood floors. 

45

46 Less than 10 ft 2 Clean-up Methods – Wet-vacuum the material. In porous material, some mold spores/fragments will remain but will not grow if materials are completely dried. Steam cleaning may be an alternative for carpets and some upholstered furniture. Use a HEPA vacuum once the material has been thoroughly dried. Dispose of HEPA vacuum contents in well-sealed plastic bags. PPE – Minimum.. Gloves, N95 respirator, goggle/eye protection. Containment – Not Required.

47 Between 10 ft 2 and 100 ft 2 Clean-up Methods – Wet-vacuum the material. In porous material, some mold spores/fragments will remain but will not grow if material is completely dried. Steam cleaning may be an alternative for carpets and some upholstered furniture. HEPA- vacuum once the material has been thoroughly dried. Dispose of HEPA-vacuum contents in well-sealed plastic bags.

48 Between 10 ft 2 and 100 ft 2 cont’d PPE – Limited.. Gloves, N95 respirator or half- face respirator with HEPA/P100 filters, disposable overalls, goggle/eye protection. Or, Full.. Gloves, full-face respirator with HEPA/ P100 filters, disposable full-body clothing, foot coverings, head gear, goggle/eye protection. Containment – Limited.. From floor to ceiling, enclose affected area in poly sheeting with slit entry and covering flap. Maintain area under negative pressure with HEPA-filtered fan. Block supply and return air vents in containment area.

49 Greater than 100 ft 2 Clean-up Methods – Wet-vacuum the material. In porous material, some mold spores/fragments will remain but will not grow if material is completely dried. Steam cleaning may be an alternative for carpets and some upholstered furniture. HEPA-vacuum once the material has been thoroughly dried. Dispose of HEPA-vacuum contents in well-sealed plastic bags.

50 Greater than 100 ft 2 cont’d PPE -- Full.. Gloves, full-face respirator with HEPA/P100 filters, disposable full-body clothing, foot coverings, head gear, goggle/eye protection. Containment – Full.. Use 2 layers of fire- retardant poly sheeting with one airlock chamber. Maintain area under negative pressure with HEPA-filtered fan exhausted outside the building. Block supply and return air vents in containment area.

51   Discard non-valuable items.  Photocopy valuable items, then discard.  Freeze (in frost-free freezer or metal locker) or freeze dry.

52

53 Less than 10 ft 2 Clean-up Methods – Use a HEPA vacuum once the material has been thoroughly dried. Dispose of HEPA vacuum contents in well- sealed plastic bags. PPE – Minimum.. Gloves, N95 respirator, goggle/eye protection. Containment – Not Required.

54 Between 10 ft 2 and 100 ft 2 Clean-up Methods – Use a HEPA vacuum once the material has been thoroughly dried. Dispose of HEPA vacuum contents in well- sealed plastic bags.

55 Between 10 ft 2 and 100 ft 2 PPE – Limited.. Gloves, N95 respirator or half-face respirator with HEPA/P100 filters, disposable overalls, goggle/eye protection. Or, Full.. Gloves, full-face respirator with HEPA/P100 filters, disposable full-body clothing, foot coverings, head gear, goggle/eye protection. Containment – Limited.. From floor to ceiling, enclose affected area in poly sheeting with slit entry and covering flap. Maintain area under negative pressure with HEPA-filtered fan. Block supply and return air vents in containment area.

56 Greater than 100 ft 2 Clean-up Methods – Use a HEPA vacuum once the material has been thoroughly dried. Dispose of HEPA vacuum contents in well-sealed plastic bags. PPE -- Full.. Gloves, full-face respirator with HEPA/P100 filters, disposable full-body clothing, foot coverings, head gear, goggle/eye protection. Containment – Full.. Use 2 layers of fire-retardant poly sheeting with one airlock chamber. Maintain area under negative pressure with HEPA-filtered fan exhausted outside the building. Block supply and return air vents in contained area.

57 Charity Hospital New Orleans, LA 11/2005

58 Before After

59   Remove water with water-extraction system. Accelerate drying process with fans and/or heaters. ! Don’t use heat to dry carpet. ! Use caution applying heat to hardwood floors. 

60 Less than 10 ft 2 Clean-up Methods – Wet-vacuum the material. In porous material, some mold spores/fragments will remain but will not grow if materials are completely dried. Steam cleaning may be an alternative for carpets and some upholstered furniture. Use a HEPA vacuum once the material has been thoroughly dried. Dispose of HEPA vacuum contents in well-sealed plastic bags. PPE – Minimum.. Gloves, N95 respirator, goggle/eye protection. Containment – Not Required.

61 Between 10 ft 2 and 100 ft 2 Clean-up Methods – Wet-vacuum the material. In porous material, some mold spores/fragments will remain but will not grow if materials are completely dried. Steam cleaning may be an alternative for carpets and some upholstered furniture. Use a HEPA vacuum once the material has been thoroughly dried. Dispose of HEPA vacuum contents in well-sealed plastic bags. Use a HEPA vacuum once the material has been thoroughly dried. Dispose of HEPA vacuum contents in well-sealed plastic bags. Remove water-damaged materials and seal in plastic bags inside contaminated area, if there is one. Dispose of as normal waste. HEPA-vacuum area once dried.

62 Between 10 ft 2 and 100 ft 2 PPE – Limited.. Gloves, N95 respirator or half- face respirator with HEPA/P100 filters, disposable overalls, goggle/eye protection. Or, Full.. Gloves, full-face respirator with HEPA/P100 filters, disposable full-body clothing, foot coverings, head gear, goggle/eye protection. Containment – Limited.. From floor to ceiling, enclose affected area in poly sheeting with slit entry and covering flap. Maintain area under negative pressure with HEPA-filtered fan. Block supply and return air vents in containment area.

63 Greater than 100 ft 2 Clean-up Methods – Wet-vacuum the material. In porous material, some mold spores/fragments will remain but will not grow if materials are completely dried. Steam cleaning may be an alternative for carpets and some upholstered furniture. Use a HEPA vacuum once the material has been thoroughly dried. Dispose of HEPA vacuum contents in well-sealed plastic bags. Remove water-damaged materials and seal in plastic bags inside the containment area, if there is one. Dispose of as normal waste. HEPA-vacuum area once it is dried.

64 Greater than 100 ft 2 PPE -- Full.. Gloves, full-face respirator with HEPA/P100 filters, disposable full- body clothing, foot coverings, head gear, goggle/eye protection. Containment – Full.. Use 2 layers of fire- retardant poly sheeting with one airlock chamber. Maintain area under negative pressure with HEPA-filtered fan exhausted outside the building. Block supply and return air vents in contained area.

65 Investigate and evaluate moisture and mold problems  Assess size of moldy area (square feet)  Consider the possibility of hidden mold  Clean up small mold problems and fix moisture problems before they become large problems  Select remediation manager for medium or large size mold problem  Investigate areas associated with occupant complaints  Identify source(s) or cause of water or moisture problem(s)  Note type of water-damaged materials (wallboard, carpet, etc.)  Check inside air ducts and air handling unit  Throughout process, consult qualified professional if necessary or desired

66 Plan remediation  Adapt or modify remediation guidelines to fit your situation; use professional judgment  Plan to dry wet, non-moldy materials within 48 hours to prevent mold growth  Select cleanup methods for moldy items  Select Personal Protection Equipment – protect remediators  Select containment equipment – protect building occupants  Select remediation personnel who have the experience and training needed to implement the remediation plan and use PPE and containment as appropriate Communicate with building occupants at all stages of process, as appropriate  Designate contact person for questions and comments about medium or large scale remediation as needed

67 Remediate moisture and mold problems  Fix moisture problem, implement repair plan and/or maintenance plan  Dry wet, non-moldy materials within 48 hours to prevent mold growth  Clean and dry moldy materials  Discard moldy porous items that can’t be cleaned

68 Black Water.. Is grossly unsanitary; black water sources are those that arise from sewage or other contaminated water entering a structure; sewage contains the expected urine and feces, but it also could contain dangerous chemicals or medical wastes; toilet backflows that originate from beyond the toilet trap are considered to be Category 3 water situations, regardless of the visible content or color; this category includes all forms of sea water, ground surface water, and rising water from rivers or streams; they carry silt and organic matter into structures and create Category 3 water situations

69 Gray Water.. According to IIRCR Standard and Reference Guide for Water Damage and Restoration S500, Category 2 or unsanitary or gray water always contains some degree of contamination; potentially; it could cause substantial discomfort or sickness if consumed by humans, and it carries micro-organisms or nutrients for micro- organisms; Category 2 (gray) Water examples include, but are not limited to, discharge from dishwashers or washing machines, overflows from washing machines, overflow from toilet bowls with some urine (no feces), broken aquariums, and punctured water beds; all of these may contain chemicals or bio-contaminants (fungal, bacterial, viral, algae), or other forms of contam- ination; time, and temperature aggravate gray water contamination significantly; may become Category 3

70 Clean Water.. is water originating from a source that does not pose a substantial threat to humans … Category 1 (clean) Water

Suite 1000, 8484 Georgia Ave. Silver Spring, MD Main Phone: Main Fax: Don Ellenberger DOE & EPA Training Director Phone: Fax: