Copy of SURFACE PREPERATION

Surface Preparation Guidelines: Guidelines for Remediating Building Material with Mold Growth Caused by Clean Water (1) Material or Furnishing Affected Cleanup PPE Containment Methods(2) Books & Papers, Wallboard (drywall & gypsum board) 3 Carpet & Backing, Concrete or Cinder Block, 1,3 N-95 Resirator, gloves Upholstered Furniture& Drapes and goggles Hard Surface, Porous Flooring (linoleum, ceramic 1,2,3 tile, Vinyl)Wood Surfaces Books and Papers 3 Concrete or Cinder Block, 1,3 Limited Limited Wallboard (drywall & gypsum board) 3,4 Use Professional Judge- Use Professional JudgeWood Surfaces, Porous Flooring (linoleum, Ceramic Tile, ment, consider potential ment, consider potential Vinyl), Non-Porous, Hard surfaces (plastics, Metals) for remediator exposure for remediator/occupant Carpet & Backing, Upholstered Furniture & Drapes 1,3,4 and size of contaminated exposure and size of area contaminated area Books & Papers 3 Full Full Concrete or Cinder Block 1,3 Use Professional Judge- Use Professional JudgeNon-Porous, Hard Surfaces ((plastics, Metals) 1,2,3 ment, consider potential ment, consider potential Upholstered Furniture 1,2,4 for remediator/occupant for remediator exposure Carpet & Backing 1,3,4 exposure and size of and size of contaminated area Hard Surface Porous Flooring, (Linoleum, Ceramic Tile, 1,2,3,4 contaminated area Vinyl) Table 2 is taken from "Mold Remediation in Schools & Commercial Buildings" 402-K-01-001, 9/2008 EPA Document available from the Internet Small - Total Surface Area Affected Less Than 10 Square Feet Medium - Total Surface Area Affected Between 10 & 100 Square Feet 1,2,3 Large - Total Area Affected Greater Than 100 Sq.Ft. or potential for Increased Occupant or Remediator Exposure During Remediation Estimated to be Significant Increased Personal Protective Equipment, if, during the remediation more extensive contamination is encountered than was expected. Consult Table 1 if materials have been wet for less than 48 hours, and mold growth is not apparent. These guidelines are for damage caused by clean water. If you know or suspect that the water source is contaminated with sewage, or chemical or Cleanup Methods 1. Wet vacuum (in the case of porous materials, some mold spores/fragments will remain in the material but will not grow if the material is conpletely dried). Steam cleaning may be an alternative for carpets and some upholstered furniture. 2. Damp-wipe surfaces with plain water or with water and detergent solution (except wood - use wood floor cleaner); scub as needed. 3. High-efficiency particulate air (HEPA) vacuum avet the material has been thoroughly dried. Dispose of the contents of the HEPA Vacuum in well-sealed plastic bags. 4. Discard - remove water damaged materials and seal in plastic bags while inside of containment, if present. Dispose of as normal waste. HEPA vacuum area after it is dried. Personal Protective Equipment (PPE) Minimum: Gloves, N-95 respirator, Goggles/eye protection Limited: Gloves, N-95 respirator or half-face respirator with HEPA filter, disposable overalls, goggles/eye protection Full: Gloves, disposable full body clothing, head gear, foot coverings, full-face respirator with HEPA filter Containment: Limited: Use polythylene sheeting ceiling to floor around affected area with a slit entry and covering flap; maintain area under negative pressure with HEPA filtered fan unit. Block supply and return air vents within containment area. Full: Use two layers of fire-retardant polyethylene sheeting with one airlock chamber. Maintain area under negative pressure with HEPA filtered fan exhausted outside of building. Block supply and return air vents within containment area. guidelines; other cleaning methods may be preferred by some professionals. particularly as the remediation site size increases and the potential for exposure and heath effects rises. Assess the need for biological pollutants, then the Occupational Safety and Health Administration (OSHA) requires PPE and containment. An experienced professional should be consulted if you or your remediators so not have expertise in remediating wontaminated water situations. (2) Select method most appropriate to situation. Since molds gradually destroy the things they grow on, if mold growth is not addressed promptly, some items may be damaged such that cleaning will not restore their original appearance. If mold growth is heavy and items are valuable or important, you may wish to consult a restoration/water damage remediation expert. Please note that these are (1) Use professional judgement to determine prudent levels of Personal Protective Equipment and containment for each situation,