after the mold rushno guidelines for mold levels exist 20,000 kinds of molds - standard unlikely...
TRANSCRIPT
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After the Mold Rush
American Association of Code Enforcement 27 October 2016
Henry Slack, U.S. EPA Region 4
[email protected] 404-562-9143
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US EPA
Mission: to protect human health and the environment
Authority on indoor air contaminants such as mold: “to conduct research and disseminate information”
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What we’re covering
EPA recommendations on mold
Water damage and other IAQ issues
Other EPA programs you may like
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Introduction to Molds
Can be found almost anywhere where moisture and oxygen are present
All molds have the potential to cause health effects
Solve moisture problems before they become mold problems!
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Why Mold Now?
Money - $32 million case
Celebrity – Brockavich, others
Sick people
Everywhere
Extreme cases fascinate
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“Mold is Gold” - Contractor
Homeowners would still pay after insurance cut coverage
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Molds are Everywhere
In air or settled,
Indoors and out
To grow, they need:
Moisture
Food (organic), O2
Hidden growth common in water damaged areas
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Why Be Pro-Active on Mold?
Mold problems usually worsen with time
Ostrich methods do not solve this
Judges and juries understand wood rot
Health effects can be serious, affecting productivity, possible legal actions
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11
EPA on Molds
•Popular guidance
•Health Effects in
Appendix B
March, 2001
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Health Effects and Symptoms related to molds
Headaches
Skin irritation
Breathing difficulties
Allergic reactions
Aggravation of asthma symptoms
Other symptoms likely: list not all-inclusive
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Health Effects and Symptoms related to molds
Hypersensitivity Pneumonitis
resembles bacterial pneumonia
uncommon
Opportunistic Infections
Aspergillus fumigatus, Trichoderma
immune-compromised individuals
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Mold Toxins (Mycotoxins)
Hundreds identified. Reported:
mucous membrane irritation
skin rash
immune system suppression
liver damage
central nervous system damage
endocrine effects
cancer
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Other Mold Health Issues
Microbial Volatile Organic Compounds
Odors linked to headaches, dizziness, fatigue, other symptoms
Glucans (cell wall pieces)
Can affect immune system
High levels may cause flu-like illness, typically in agriculture or manufacturing
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Moisture and Molds
Control Moisture to Control Molds Leaks – roof, window
Floods
Condensation
Plumbing leaks
Unvented appliances
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Unvented Appliances
Portable or fixed,
Gas, kerosene propane, alcohol
All generate water
Condensation on cold surfaces = mold
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Fix the Water First -- Prevent Mold Regrowth!
Fix leaky plumbing
Stop condensation, fix promptly
Keep HVAC system clean, dry
Vent moisture-generating appliances outside
Clean and dry wet/damp spots within 24-48 hrs
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Plan the Remediation Before Starting Work
Questions to consider
Are there existing moisture problems?
Are there hidden sources of water?
Do occupants report musty odors? Or health problems?
Are materials or furnishings visibly damaged?
Is consultation with health professions indicated?
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Mold Remediation – Key Steps!
Consult health professional throughout
Select remediation manager
Assess size of mold problem, type of mold-damaged materials
Communicate with building occupants
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Mold Remediation – Key Steps! (continued)
Plan remediation, adapt guidelines to fit
Select personal protective equipment (PPE)
Select containment equipment
Select remediation personnel/team
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Mold Remediation – Key Steps! (concluded)
Fix water or moisture problem
Clean and dry moldy materials. Discard what cannot be cleaned
Dry non-moldy items within 48 hours
Check for return of moisture and mold
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Communicate w/ Occupants When Remediating
Essential for successful mold remediation
Occupant perception of health risk crucial
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Communicate When You Remediate
Establish that occupant health and safety are top priority, and occupant concerns are taken seriously
Present remediation status clearly
Identify direct contact for occupants
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Guidelines for Remediating Mold Growth Caused by Clean Water
Table 2, Page 14 - MUCH information
EPA divides into
Small ( < 10 square feet)
Medium (10-100 square feet)
Large (>100 square feet)
Cleanup, protective equipment, and containment vary with size
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EPA’s Cleanup Methods
Wet Vacuum
Do not use if materials are dry
Damp Wipe non-
porous surfaces
Water, detergent
HEPA Vacuum
High Efficiency Particiculate Air
Filter installation crucial
Discard
Water damaged, not salvageable
Seal bags before removal
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Wet Vacuum
Remove water from floors, carpets, hard surfaces
Do not vacuum porous surfaces
Only use when materials are still wet, or you may spread spores
Clean and dry vacuum machine after use
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Damp Wipe
Dead or alive, molds can have effects
Remove by wiping or scrubbing with water, or water and detergent
Dry quickly
Porous materials may have to be discarded
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HEPA Vacuum
HEPA- High Efficiency Particulate Air
Use in final cleanup, after contaminated materials removed
Make sure filter sealed
Wear protective gear to change filter
Dispose of old filters in well-sealed bags
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Discard
Remove damaged materials and seal in plastic bags, typically 6 mil double bags
Minimize spore dispersion in building
Discard as construction waste
Large items may be wrapped in poly sheeting and sealed with duct tape
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Personal Protective Equipment (PPE)
Gloves to protect skin from molds, and from potentially irritating cleaners
Goggles or full-face respirator: protect eyes from dust
Disposable clothing recommended on medium (>10 sq.ft.) or large projects to avoid skin contact and spread of mold
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Personal Protective Equipment (PPE) (continued)
Respirators
Minimum: N-95, NIOSH approved
Limited: air-purifying with HEPA filter cartridge
Full: for intense or long-term exposure, full face, powered air purifying respirator is recommended. Follow OSHA regulations
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Containment
Containment limits release of mold and minimizes exposure
Maintain negative air pressure in containment
Exhaust air to outdoors and ensure adequate make-up air provided
If working, polyethylene sheeting will billow inward
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Limited Containment
For 10-100 sq. ft. of visible moldy material
Single layer 6 mil polyethylene surrounding the area
Slit entry
Vents, chases, risers sealed
Clean surfaces prior to removal of items
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Full containment Recommended for >100 sq.
ft. moldy material, or if needed to prevent contamination
Double layers polyethylene sheets
Airlock constructed to hold waste, allow persons to put on or take off PPE
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Non-containment!
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Hidden Molds
Molds may grow above ceiling, under carpet, back of drywall, etc.
Potential danger to investigator - use PPE
Revise remediation plan if hidden molds discovered
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Remediation and HVAC
Do not run HVAC if contaminated with mold or if contamination is suspected
Consult EPA’s Should You Have the Air Ducts in Your Home Cleaned? for details (www.epa.gov/iaq/pubs)
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Mold Remediation and Biocides
Biocide use (such as bleach) is not recommended as a routine practice during mold remediation
If used, always ventilate the area, taking care not to distribute mold spores
Ensure applicators are properly licensed
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EPA Position on Sampling
EPA does not advise testing for mold except for legal reasons, if it would change physician’s treatment, or to discover hidden mold
Plan a sampling strategy to confirm suspected sources & exposure
Use experienced professional to interpret results
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Sample less, save more
No guidelines for mold levels exist
20,000 kinds of molds - standard unlikely
Many methods - air, surface, spore trap, bulk, water, tape lift, dust, PCR, enzyme
If you see mold growing, you don’t need to test --it’s there!
Sampling only a snapshot
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Sampling Pitfalls
Inadequate number of samples
Outdoor control samples omitted
Unneeded or inappropriate samples
If you cannot sample properly, it is preferable not to sample. Inadequate sample plans may generate misleading, confusing, and useless results
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Mold and Indoor Air Regulations & Standards
Standards or Threshold Limit Values (TLVs) for airborne concentrations of molds, or mold spores, have not been set. EPA has no regulations or standards for airborne mold contaminants.
Despite a lack of standards, it is clearly prudent to avoid exposure to molds.
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Useful equipment
Moisture Meters
Learn if materials are wet/water damaged
Monitor progress as material dries
Humidity Gauges
Humidistat to turn on HVAC
HVAC Filter - upgrade to MERV-8+
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How Do You Know You Have Finished?
Water problem completely fixed
Mold removal completed
no visible mold, odors, or damaged materials
Revisit: no sign of mold, water
Occupants: no symptoms
Ultimately, a judgment call
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Visual Inspection
Often not complicated
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Eliminate bypass!
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Other Stuff from EPA
Better Indoor Air Quality (IAQ) for
Asthma
Schools
Homes
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EPA’s Asthma Program
Children and parents
Health professionals
Media (“Goldfish”)
Communities/Partners
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Schools CAN Improve Their Indoor Environments
Schools have IAQ-related problems
Many IAQ problems are easily identified and resolved by school staff
It costs less to prevent IAQ problems than to fix them!
Being proactive is KEY!
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IAQ Tools for Schools
Voluntary and flexible Low- and no-cost methods Survey, walkthrough, communicate Save $$, raise test scores Re-build trust with community http://www.epa.gov/iaq/schools/in
dex.html
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Indoor airPLUS
Better Environments Inside and Out
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Indoor airPLUS
Qualified new homes earn label
Must meet Energy Star
Must meet requirements in moisture control, combustion, HVAC, radon, pests barriers, materials
Third-party verified (HERS Rater)
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Questions?