Interstate Mold Inspection Remediation Protocol
NOTE: This protocol is included within this particular report for information only.
All the professional opinions presented in this report are based solely on the scope of work conducted and sources referred to in our report. The data presented by the Interstate Mold Certified Inspector in this report was collected and analyzed using generally accepted industry methods and practices at the time the report was generated. This report represents the conditions, locations and material that were observed at the time the fieldwork was conducted. The scope of work for this project did not include an assessment of other environmental conditions which might exist on the property. No inferences regarding other conditions, locations or materials at a later or earlier time may be made based on the contact of this report. No warranty is made. Interstate Mold Inspection's liability and that of its contractors and subcontractors, arising from any services rendered hereunder, shall not exceed the total fee paid by the client to Interstate Mold Inspection. This report was prepared for the sole use of our client. The use of this report by anyone other than our client, their repetitive or Interstate Mold Inspection is strictly prohibited without the expressed written consent of Interstate Mold Inspection Company. Portions of this report may not be used independently of the entire report. Interstate Mold Inspection Company does not conduct Mold remediation therefore we recommend a trustworthy company listed within to conduct all remediation. Interstate Mold also recommends that we return to conduct a clearance inspection after remediation.
STEP #1: INSPECTION
* To determine whether the property has a mold problem requiring remediation, the certified inspector from Interstate Mold Inspection Company, uses a wide variety of mold testing techniques and technologies. The air is sampled via Air-O-Cell Sampler and topical samples are taken through the use of swabs and tape lifts. This process enables the certified inspector to define the areas of removal and provide oversight for the project.
* Consult with the construction and remodeling group prior to removal to facilitate efficient reconstruction of the space.
* Develop a project time line and communicate this with building representatives prior to the remediation and construction project. Provide contact numbers if occupants have questions about the project.
STEP #2: PERSONNEL
* Individuals trained in the handling of hazardous materials.
* Provide right-to-know training on exposure to the chemicals used and the health effects of exposure to the fungal organisms.
STEP #3: PPE
* Full faced negative pressure respirators (North 7600 series) with CD/CL/HC/HF/OV/SD/P100 cartridges. The cartridge protects against chlorine dioxide, chlorine, hydrogen chloride, hydrogen fluoride, organic vapor, sulfur dioxide and provides a HEPA filter to protect against particles.
* Disposable tyvek coveralls covering both the head and the shoes.
* Gloves: Neoprene, Rubber, Leather or cotton depending on the material to be removed. Leather is recommended when sharp material is expected to be encountered during the demolition.
* Tools: Pliers or cutters to break up metal mesh in plaster walls. These and other tools are used to reduce skin contact with sharp objects.
STEP #4: HYGIENE
* Wash hands after exiting the enclosure and prior to using the hands to place anything in the mouth. Fungal organisms can cause dermatitis. Ingestion of the bacteria or fungi can cause severe diarrhea.
* During the exit from the enclosure, remove the coveralls leaving them inside either the enclosure or the first stage (dirty room) of the two stage decontamination room. In some cases, space will not allow for construction of the decontamination room.
* In the change area, take off the respirator. Remove the cartridges. Clean the surfaces of the cartridges with a disinfectant wipe and keep the cartridges for reuse. Soak and clean the respirator in a gallon of disinfectant (1/2 oz. A-33 quaternary ammonia disinfectant per gallon of water). Rinse the respirator in water, clean with a disinfectant wipe and dry with a clean towel.
* After an exhaust fan with a HEPA filter is used on a job site, the prefilter is covered with 4-6 mil poly and sealed with duct tape.
STEP #5: CONTAINMENT OF AFFECTED AREA
* Complete isolation of work area from occupied spaces using plastic (4-6 mil poly) sheeting sealed with duct tape (including ventilation ducts/grills, fixtures and other openings).
* Use an exhaust fan with a HEPA filter to generate negative pressurization. Use the appropriate sized unit for the space. For example, an Ulti Vac may be used for a glove bag removal, a HEPA Jr. for an office sized room and larger units for bigger areas. Do not use the same units for asbestos and mold removal. If units are shared, a break in the HEPA filter could change a mold containment into an asbestos containment.
* The two sections of the Ulti Vacs are reinforced with duct tape wrapped around the taped junction in the middle of the vacuum unit.
* If space allows, construct a two stage decontamination room with a changing area and a dirty room attached to the entrance of the containment area.
STEP #6: CONTROL OF EXPOSURE TO ADJACENT AREAS
* Vacating people from spaces in not necessary but is recommended for individuals with reduced immune systems, infants, recent surgery patients, people with chronic inflammatory lung diseases or individuals with respiratory health concerns (asthma, hypersensitivity pneumonitis and severe allergies).
* In general, there are fewer occupant complaints about the remediation if the adjacent spaces are vacated. The complaints about construction related odors are reduced and there is more space to place cleanup material.
STEP #7: PAINTING AND APPLYING BENZALKONIUM CHLORIDE
* Exhaust fan discharge is outside building - Keep HEPA exhaust fan on during the application of Benzalkonium Chloride and anti-microbial paint. Make sure adjacent outside windows are shut, the discharge is not close to an air intake, and window air conditions are shut off or set on re-circulation.
* Exhaust fan discharge is inside building - Shut off HEPA exhaust fan during the application of Benzallkonium Chloride and anti-microbial paint. Turn the fan back on when the odor is no longer noticeable.
* Applying Benzalkonium Chloride to visible fungal growth prior to removal of material. Apply the Benzallkonium Chloride solution to the surface and wait sixty minutes prior to removing the material. This provides sufficient time for the Benzalkonium Chloride to disinfect the material and reduces the dust generated because the material is wetted.
* In some cases, a surface is lightly misted with a Benzalkonium Chloride solution prior to painting. Painting of the surface may begin within 90 minutes of the Benzallkonium Chloride misting.
STEP #8: REMOVAL OF CONTAINMENT MATERIALS
* Containment materials that cannot be cleaned should be removed from the building in sealed plastic bags. The outside of the bags could be cleaned with a damp cloth and a detergent solution or HELP vacuumed in the decontamination chamber prior to their transport to uncontaminated areas of the building. There are no special requirements for the disposal of moldy materials. Moldy materials that are bagged can be disposed of with other general waste.
* Dirt, debris and broken plaster may be placed in 55 gallon drums inside the containment area. Before removal from the containment area, close the drum and clean the outside surface.
STEP #9: CLEANING OF THE CONTAINMENT AREA
* The contained area and decontamination room should be HEPA vacuumed and cleaned with a damp cloth and/or mop with a detergent solution and be visibly clean prior to the removal of isolation barriers.
STEP #10: CONTAINMENT OF AREA USED DURING RECONSTRUCTION
* After the containment area has been cleaned, the enclosure can be used to contain the dusts generated by the sheetrock sanding and taping activities. This is done to reduce the problems with cleanup when reconstruction is completed. The use of HEPA exhaust filter is not required. The two stage decontamination area is also not needed.
STEP #11: FINAL INSPECTION
* Prior to re-occupancy of the space, a visual inspection and or air sampling will be done by any inspector from INTERSTATE MOLD INSPECTION COMPANY. Re-occupancy may occur when the space passes the inspection.
STEP #12" REFERENCES
Guidelines on Assessment and Remediation of Fungi in Indoor Environments, New York City Department of Health Bureau of Environment & Occupational Disease Epidemiology. April, 2000 16p.
Managing Water Infiltration in Buildings, U of MN DEHS and Institute for Environmental Assessment. N.G. Carlson and A. Quraishi - 1998.
Additional procedures developed in consultation with Leviticus Corporation.
Remediators should perform remediation in compliance with the Institute of Inspection Cleaning and Restoration Certification (IICRC) mold removal guidelines, The New York City Department of Health & Mental Hygiene Bureau of Environmental & Occupational Disease Epidemiology guidelines
or in compliance with EPA mold removal guidelines for schools and commercial buildings. Air conditioner remediation should be done by a licensed AC contractor who specializes in cleaning mold contaminated HVAC systems. HVAC remediation work should be done in compliance with NADCA recommendations. The remediator should follow any applicable recommendations that the indoor environmental professional included below.
Remediation services should be rendered only by a professional, experienced, mold remediator who can verify the following: proper insurance coverage, proper certifications in mold remediation by a non-profit organization (such as IICRC, or AmIaq,) and possesses any licenses required in your area.
All work shall be done in strict accordance with all applicable regulations, standards, and codes.
It is highly recommended that the remediator use a legal written contract which outlines the contractor's responsibilities and client's obligations as well as cost estimates, limitations and disclaimers. The agreement must be made prior to remediation regarding who is responsible for build-back of building materials after moldy building materials have been removed. All personal property removed by the remediator shall be returned to their proper locations after remediation is complete.
Employees must demonstrate completion of mold remediation training and respirator training. Employees must demonstrate hazardous communication training as required by the US Occupational Safety and Health Administration (OSHA 29 CFR 1910.1200). Tyvec coveralls should be utilized along with proper gloves, goggles, and foot cover. NIOSH-approved respirators and cartridges are highly recommended. Adequate respiratory protection must be utilized in accordance with OSHA 29 CFR 1910.134. In addition, the extent of coverall use and selection of respirator type and selection of containment type at this specific job site must comply with the mold removal guidelines prescribed by New York City Department of Health & Mental Hygiene Bureau of Environmental & Occupational Disease Epidemiology.
The remediator shall use all appropriate controls and work practices which are standard in the indoor air environment and mold remediation industry that apply, regardless of the inclusion or exclusion of such standards in this document. Should the above scope or protocol or any part thereof not be specifically adhered to, the consultant and mold inspection company shall be held harmless by all parties.
The containment enclosure will be in the form of 6 mil thick polyethylene sheeting. The remediator shall enclose in 6 mil polyethylene sheeting any and all HVAC system returns and air vents, and any ceiling voids above ceiling tile in the containment area that are used as return air plenums.
Also, all conduits, chases, risers and doors within the containment area shall be sealed with 6 mil plastic to minimize the migration of contaminants to other parts of the building. It is highly recommended that warning signs be posted that inform persons that mold remediation work is ongoing. In addition, it is highly recommended that remediators restrict access to the work areas.
Pressure in the containment enclosure must be negative at least 5 pascals or 0.02 inches water gauge relative to non contaminated areas outside of the containment enclosure. Contractors can verify negative pressure with a digital manometer. It is highly recommended that containment barriers be constructed so that containment flaps close if negative pressure is lost. In addition to the creation of negative pressure, it is highly recommended that a containment area achieve four to twelve air changes per hour for containment air ventilation and dilution.
Air being removed from the containment enclosure should be HEPA filtered and emptied outside, away from air intakes. If it is not possible to exhaust air outside, the air must be HEPA filtered and a particle counter should be utilized to confirm proper function of the filter. Air scrubbers equipped with HEPA filters and capable of at least 600 to 1,000 cfm must be used in all enclosed work areas during remediation and for at least 48 hours after remediation. Expanding containment may be necessary when hidden fungal contamination is discovered. The creation of negative pressure differentials may create a risk of carbon monoxide exposure from back drafting of carbon monoxide, or fire hazards due to rollout of fire from gas appliances. Caution, judgment, and proper planning must be used whenever gas appliances, fireplaces, laboratory hoods and other potential pathways which may be affected by the creation of nearby negative pressure. Negatively pressurized containment in hot humid climates or seasons can cause humidity to be sucked into containment areas through openings in walls, ceilings, and floors.
HVAC SYSTEM SHUT DOWN
Any air conditioner in the enclosed work area or with a return in the enclosed work area must be shut down, locked out, and all registers, grills, and returns must be sealed and taped with barriers consisting of polyethylene sheeting. Supplemental portable heating or air conditioning may be used in the building or work area if needed to maintain favorable temperatures for workers and building occupants.
REMOVAL OF PERSONAL ITEMS
All furniture, clothes, mirrors, and other personal items must be be removed from the work areas and stored in a safe, dry place. Removal will deter cross contamination and will almost always expose hidden mold behind personal items. Hard-surfaced personal items that were in contaminated areas must be wiped with fungicide. Porous items in same areas must be HEPA vacuumed or disposed of. All non-movable and attached items in the work area shall be sealed with polyethylene sheeting after being first HEPA vacuumed and then wet wiped with fungicide, exercise caution when wrapping salvageable items to prevent trapping moisture.
Prior to removal and disposal of any moldy materials, spore suppression is recommended. Spore suppression can be in the form of HEPA vacuuming moldy surfaces, covering moldy materials with sticky sheets of plastic covering, or simply spraying the moldy material with a misting of fungicide. Only EPA-approved fungicides should be used, such as a products manufactured by Fiberlock or similar companies.
1. All areas to be treated with a biocide must be clean.
2. Vacuum all debris in an appropriate hepa-vac.
3. Using a wire brush, aggressively scrub all areas to be treated with a solution containing one part water, one part sodium hypo chloride and 2 ounces of anionic surfactant. Let dry completely.
4. Using a sprayer, thoroughly saturate the entire area with the pre-mixed biocide (Benzalkonium Chloride or Lophene). Let dry completely.
5. Repeat step number four.I
6. Spray or brush on an antimicrobial sealant (Tim bor, fosters). Complete coverage is essential.
7. Perform Interstate Mold Inspection clearance tests to verify any mold infestation has been irradiated.