Giertsen Mold and Water Remediation


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Giertsen Mold and Water Remediation

  1. 1. Mold, Water Damage and IAQ Presented by:
  2. 2. Who we are• Giertsen Company: Fire, Water & Wind RestorationSpecialists Since 1918• Regional offices in Minneapolis, Milwaukee, Chicagoand Florida allow us to quickly meet the needs of ourcustomers.• Giertsen Company provides services for residential,multi-tenant, commercial and industrial devastationthroughout the region.Visit us on the web: www.giertsenco.comCall us any time: 888-670-1918
  3. 3. Full Service CompanyDisaster often strikes unexpectedly, but you knowexactly what to expect with Giertsen…Giertsen provides the following services:• Emergency Services• Reconstruction Services• Cleaning Services• Specialized Services• Catastrophe Response• ConsultingSpecialized Services• Mold Remediation• Asbestos Abatement• Bio-hazard Cleanup
  4. 4. Emergency Services:24-Hour Emergency Service• Water Mitigation• Board-up/Security• Dehumidification• Monitoring Equipment• Temp power and heat• Deodorization• Thermal Imaging• Commercial Drying• One Hour Response
  5. 5. Categories of Water: Category 1 (Clean) Category 2 (Gray) Category 3 (Black)• Originates from Sanitary Water • Contains significant • Grossly contaminated Source contamination • Can contain pathogenic,• No substantial risk from • Has potential to cause sickness toxigenicexposure if or other harmful agents consumed by humans• Examples: • Examples: Broken water supply line • Can contain unsafe levels of Sewage Tub or sink overflow microorganisms as well as other Toilet backflows from beyond Broken toilet tanks organic or inorganic materials trap Appliance malfunctions Ground surface water Melting ice or snow • Examples: Water from rivers or streams Falling rainfall Discharge from dishwashers Wind-driven rain from heavy Overflows from soiled toilet storms• Once Category 1 water leaves bowlsthe Seepage due to hydrostatic • Such water may contain silt, exit point, it may not remain press. organic matter, pesticides,clean Broken aquariums heavy once it contacts other surfaces Punctured water beds metals, regulated metals, oror toxic materials. • Category 2 water cleanliness organic substances can deteriorate for many reasons – The cleanliness of water changeswith building materials contact over time and requires a prompt response! Proper and aggressive drying methods hinder amplification!
  6. 6. Amplification time-line To prevent amplification of microorganisms, prompt response is necessary for all categories of water intrusion. A Categories of Water Damage B The Effect of Time on C The Effect of Time on Microbial Microbial Growth Growth by Category Cl eanl ines s of Water Sourc e (Categories )Cleanlines s of Wat er Sourc e (Categories ) 3 3 Category 3 (Black) Category 3 (Black) 2 Category 2 (Gray) 2 Category 2 (Grey) Category 1 (Clean) 1 Category 1 (Clean) 1 1 2 3 4 5 6 7 1 2 3 4 5 6 7 Time Elapsed (Days) Time Elapsed (Days) A Whether water is categorized as B … it is not responded to promptly, C With the passage of time, clean, grey or black, when there microorganisms will amplify. While microorganisms present in any is a water intrusion and … the amplification will not be immediately category of water intrusion will noticeable, the greater the length of time, begin to amplify. the greater the amplification. FACT: Bacteria and mold spores are always present in the indoor environment. Reprinted with the permission of IICRC S500 Technical Editor; Howard Wolf of HW3 Consulting, Richfield, WI
  7. 7. Classes of water:Class 1 (least amount of water, absorption and evaporation)• Water losses that affect only part of a room or area• Large areas with materials that have absorbed minimal moisture• Little or no wet carpet and/or cushion presentClass 2 (large amount of water, absorption and evaporation)• Water losses that affect at least an entire room of carpet and cushion• Water has wicked up walls less than 24”• Moisture remaining in structural materialsClass 3 (greatest amount of water, absorption and evaporation)• Water may have come from overhead• Ceilings, walls, insulation, carpet, cushion and sub-floor saturatedClass 4 (specialty drying situations)• Consist of wet materials with very low permeance/porosity• Hardwood, plaster, brick, concrete, lightweight concrete and stone• Typically deep pockets of saturation which require very low specific humidity• May require longer drying times and special methods
  8. 8. Category 1, Class 4, 2 days Proper Aggressive Drying Methods
  9. 9. IAQ True or False All or most IAQ issues or problems are a result of someone’s imagination or hypochondria. All of people’s ills and problems (even behavioral) are caused by poor air quality. Comparing air quality sampling results with occupational standards is a good means of determining if a problem exists. Conducting many different types of sampling will determine what the cause is.
  10. 10. Conduct an Inspection What is the source? Map the moisture paths Adjoining spaces? Likelihood of second occurrence? Moisture detection devices?
  11. 11. Scope of IAQ Problems Health care costs attributable to poor IAQ are in the neighborhood of $15 billion per year Ref: American Medical Association
  12. 12. IAQ Drivers Exposure to IAQ contaminants has increased dramatically in the recent past People are more informed and have become more particulate in expecting a safe, healthy and comfortable working environment Litigation around IAQ has become the fastest growing area in tort law today IAQ standards and codes have come into existence IAQ regulation and legislation has been proposed and is on the horizon
  13. 13.  Bioaerosols  Airborne particles that are living, or originate from living organisms (ACGIH Bioaerosols, 1999) Bioaerosols include  Microorganisms  Fragments of microorganisms  Toxins & particulate waste products from all varieties of living things
  14. 14. ACGIH Defines the term Biologically Derived Airborne Contaminant as:  “Bioaerosols, gases, and vapors that living organisms produce.”
  15. 15. Surrounded by Microbes & Bioaerosols Sources include  Fungi (Molds & Yeasts)  Bacteria  Viruses  Protozoa  Dust mites People have adapted to most  When exposed, react differently
  16. 16. FungiMulti-cellular organisms that feed and decompose dead organicmatter.Approximately 70,000 species of fungi have been describedand include mushrooms, mildew, mold, puff balls.Fungi are important because . . . decompose dead organic materials to recycle nutrients back into the eco system production of food, antibiotics and other chemicals helps plant roots to absorb nutrients from soil and protects the roots help to maintain a strong ecosystem
  17. 17. Fungi - Molds When supplied with a carbon source such as glucose, fungi can synthesize their own proteins, most amino acids and vitamins if nitrogen and essential minerals are available. Carbon sources include:  Skin flakes  Paper on sheetrock  Plants  Food products
  18. 18. Fungi & IAQ Fungi are typically found both indoors and outdoors There are over 100,000 known species of fungi
  19. 19. Fungi can be a problem when. . Cause disease in agricultural products - harmful to plants, animals and humans. Grow on or in buildings and building furnishings - harmful to building and occupants. Allergies to mold develop. Cause disease in people - especially those with weak immune systems.
  20. 20.  The simple presence of airborne fungal spores or fragments indoors is cause for concern when  The species and rank order of concentration magnitude is signi-ficantly dissimilar with concurrent outdoor samples  The source of the sampled indoor concentrations is from an indoor microbial amplification site  Potential “high-risk” fungal species were identified
  21. 21. Fungal Amplification How does it occur indoors? Porous building products often contain organic materials When these products become wet or moist (flooding, condensation, high RH %), existing fungi embedded on or in the products begin to grow
  22. 22. Four Requirementsfor Fungal Growth Spores Nutrients Time Moisture
  23. 23. Fungal Amplification  “Musty/moldy” odors are result of microbial volatile organic compounds (MVOC)  Fungi will continue to grow until sources of moisture or nutrients are removed from amplification site  Effective remediation strategies require both thorough cleaning and moisture control
  24. 24. Fungus Among Us . . . Other fungi commonly found in problematice indoor environments  Aspergillus  Penicillium  Alternia  Fusarium  Ulocladium  Chaetomium & a host of others
  25. 25. Health Effects Associated with Fungal Exposure Fungi have been raised as one of the possible causes of Sick Building Syndrome (SBS), which has been frequently reported. Symptoms of SBS can include:  Eye irritation (itching &  Headache watering eyes)  Nausea  Nasal irritation, nasal  Drowsiness, tiredness congestion  Reduced mental capacity,  Throat irritation mental fatigue  Cough, wheeze  Changed sensation of odor  Hoarseness, changed voice or taste  Skin irritation (stinging sensation, itching, dry skin)
  26. 26. Health Effects Associated with Fungal Exposure The symptoms of SBS are non-specific and have been associated with many factors, including temperature and humidity. Overall, the health effects associated with mold exposure are generally separated into four categories:  Irritation  Allergy  Infection  Toxicosis
  27. 27. Microbes, Bioaerosols & the Indoor Environment High Relative Humidity (RH%) Microbial Amplification Sites – Active growth Microbial Reservoirs – Deposition without active growth
  28. 28. In the Microbial Remediation Industry Primarily focused on Fungi & Bacteria contaminating the indoor environment
  29. 29. On Wall Materials
  30. 30. On Roof Decking
  31. 31. Behind Base Coving
  32. 32. Water Infiltration
  33. 33. Ventilation
  34. 34. Ventilation
  35. 35. Duct Work
  36. 36. Good IAQ???Temperature and humidity within range that most occupantssatisfiedAirborne pollutants generated within space (copiers, printers,cleaning products) are purged by adequate air exchangeCarbon dioxide levels do not point to major ventilation concernsAirborne pollutants that are not indigenous to the space are notpresentVentilation system provides adequate/uniform air movement toavoid perception of stuffinessMost occupants do not experience health concerns
  37. 37. Causes of IAQ Problems HVAC  Cleaning/maintenance chemicals Mold Contamination  Cleaning practices Construction/remodeling (VOCs, dust)  Deferred Maintenance Improper use of area  Individual sensitivities Building materials (e.g.,  Indoor sources gypsum)
  38. 38. Determining Extent of the Problem Documenting areas of water damage  Visually  Moisture Meter Record materials damaged or suspected to be  Gypsum board  Carpet  Furnishings Sampling to determine the extent of contamination  Air samples (documents potential occupant exposure)  Bulk material  Rodac contact  Tease Tape
  39. 39. Objective: Eliminate the effects of the contamination on building occupants, contents, and structural materials, in such a fashion as to not subject them to further potential harm There is no one right method . . . .
  40. 40. Microbial Remediation Remediation equipment Remediation techniques Remediation products & materials Microbial remediation of HVAC systems
  41. 41. Remediation Equipment Negative air machines / air scrubbers HEPA vacuums Solution application equipment  Pump sprayers  Flo-jet type pumps  Airless sprayers  Pressure pots
  42. 42. Remediation Equipment Drying/dehumidification equipment Extraction equipment Power hand tools  Sanders – Power saws  Drills – Demolition hammers Demolition tools Hand tools
  43. 43. Products & Materials Anti-microbial agents  Use subject to FIFRA (Federal),State, & Local regulations Containment materials Other
  44. 44. Products & Materials Anti-Microbial Agents Biocides  Generally provide short-term kill of microbes Anti-microbial treatments & coatings  For long-term inhibition of microbial amplification on treated surfaces Both regulated federally under FIFRA & subject to additional state & local regulations Encapsulants  Provide no significant anti-microbial properties, but act as sealer
  45. 45. Anti-Microbial Agents Commonly used biocides for microbial remediation work include  Sodium hypochlorite (bleach solution)  Chlorine dioxide (Oxine™)  Quaternary ammonium compounds
  46. 46. Anti-Microbial Agents Other commonly used biocides for microbial remediation  Iodine  Peroxide  Ethylene oxide  Gluteraldhyde  Phenol-based products  Alcohol
  47. 47. Surface Treatments Commonly used for microbial remediation  Aegis MicrobeShield™  Foster Products 40-20  Microban  Portercept  Tuff Coat or Super Seal  Kilz Primer  Bullseye Primer
  48. 48. EPA Terms for Anti-Microbial Agents Sterilizer  Any chemical or physical process used to destroy all living organisms in water or on the surface of various materials Disinfectant  Any chemical or process that destroys more than 99% of microorganisms capable of causing human disease. May not kill all spores on inanimate surfaces
  49. 49. EPA Terms for Anti-Microbial Agents Sanitizer  An agent that reduces the number of microorganisms to safe levels as judged by public health requirements Deodorizer  A chemical or gas that covers, modifies, removes or destroys odor causing agents
  50. 50. Other Remediation Products & Materials Lay flat hose, flex duct, rigid duct Disposal bags (heavy poly, 4-6 mil) Disposable cloths / wipes Vacuum filters
  51. 51. Other Remediation Products & Materials Gloves  Painters tape Respirator filters  Nylon tie straps Disposable coveralls  Replacement blades  ??????
  52. 52. Remediation Techniques Typical remediation techniques include  HEPA contact vacuuming of surfaces or items  Controlled demolition and/or removal of contaminated materials  Hand wiping / washing of surfaces or items  Wet extraction of surfaces or items followed by accelerated moisture removal process
  53. 53. Remediation Techniques Typical remediation techniques include  Fumigation, etc. of salvaged items  Scraping, sanding or planing of semi-porous surfaces free of embedded microbial growth  Application of anti-microbial surface treatments to remaining materials or items as a final step
  54. 54. HEPA Contact Vacuuming Vacuuming remaining surfaces free of accumulated particulate is a key component of successful remediation HEPA  Filtered canister vacuums with assorted brush attachments
  55. 55. Hand Wiping / Washing Non-porous or semi-porous surfaces and items are detailed by hand wiping with disposable, treated cloths Non-porous surfaces may be wet cleaned using a surfactant and/or a sanitizing agent
  56. 56. Controlled Demolition of Contaminated Materials Contaminated materials are isolated in a work area with appropriate Environmental Engineering Controls Materials & debris are removed in a controlled fashion Removed materials are properly sealed for removal & transport
  57. 57. Scraping/Sanding of Contaminated Materials Contaminated materials are isolated in a work area with appropriate Environmental Engineering Controls Loose dust & debris are then HEPA- vacuumed from the material’s surface Embedded microbial growth is physically removed via scraping or sanding Removed debris & particulate is collected
  58. 58. Application of Anti- Microbial Surface Treatments Contaminated semi-porous surfaces (e.g. wood framing members, sub-floors, etc.) are often salvageable, providing  Moisture source has been corrected  Loose debris & significant microbial amplification has been physically removed  Material has been dried to normal state
  59. 59. Application of Anti- Microbial Surface Treatments In remediation process, anti-microbial coatings or surface treatments are often applied to remaining surfaces as a “Final Step” A number of specialty anti-microbial products are being used in Microbial Remediation industry
  60. 60. Microbial Contamination in HVAC Systems Requires higher degree of precision than typical “duct cleaning” methods Determine the HVAC system’s role in microbial contamination  Is HVAC system the (or a) contamination source (Microbial Amplification Site, OR  Is contamination in HVAC system deposition from other areas (Microbial Reservoir)
  61. 61. Microbial Contamination in HVAC Systems Correct HVAC problems that are leading to microbial amplification Negative pressurization must be maintained within HVAC system throughout remediation process Proper Environmental Engineering Controls must be utilized to prevent occupant exposure and cross-contamination
  62. 62. Abatement Procedures Level I: Small Areas (<2 sq. ft.) Clean-up by  Spray down with Maintenance Staff 10% bleach Trained in cleaning,  Clean protection, health surrounding effects areas with bleach Free from allergy,  Place materials in asthma, etc. sealed bags Respiratory  Disposal Protection? Personal Protection?
  63. 63. Abatement Procedures Level III: Large-Scale Remediation (>30 sq. ft.) Personnel trained in  HEPA-vacuum hazardous materials before removing barriers Containment of affected area  Respiratory & personal protection Place material in double-sealed  Air monitoring plastic bags
  64. 64. An IAQ Management Plan Helps to Organize Specific Occupant Needs Documents IAQ complaints of occupants – effective communication Provides policies & procedures for addressing changes to the tenant spaces or building w/remodeling, etc. Helps to define O & M and housekeeping procedures Reinforces good IAQ practices, such as no smoking
  65. 65. Implementation of the IAQ Plan Conduct initial walk-through or evaluation of building Organize health & safety committees to meet periodically Record and log occupant complaints – respond appropriately Begin training building staff to specific responsibilities
  66. 66. “Rome wasn’t built in a day” An IAQ management plan requires commitment Patience Clear communication between management & tenant Positions the building management in good legal and ethical standing with the tenants Provides a safe working environment
  67. 67. Questions ???? Contact InformationKevin Giertsen, Giertsen Company Phone: 888-670-1918