A Category 3 mitigation involves contaminated (black) water and can contain pathogenic, toxigenic, or other harmful agents. It is possible for restoration professionals to safely complete a Category 3 mitigation, but it is necessary to follow every step and paying close attention to all the details while doing so.
It is important to follow this step-by-step guide when dealing with Category 3 water to ensure it is removed safely to prevent any potential danger.
1. Don full PPE
Because of the potential presence of high-risk pathogens you are required to wear full personal protective equipment, including respirators.
2. Identify and locate any hazards
When entering a Category 3 mitigation job, look for any safety hazards that may be present, i.e. electrical wires in water, structural instability, etc.
3. Locate the water source
Locate the source of water and stop any further intrusion if safe to do so.
4. Remove affected furniture
Remove affected furniture and/or protect any other furniture.
5. Apply deodorant
Apply an initial deodorant to control sewage odor if required.
6. Extract water
Remove any standing water by pumping or mopping.
7. Apply a biocide
Note: Ensure you ventilate the area before using disinfectants.
Remove any solid gross contaminants using this method:
- Perform a low pressure rinse with clean water.
- Apply an initial disinfectant clean to all surfaces and scrub with a brush.
- Rinse for a second time with clean water.
- Apply a second disinfectant application.
This will help prevent and stop the growth of microbes.
8. Install air movers
Large capacity air movers should now be installed, approximately every 10-15 feet apart.
Note: Ensure they are all blowing in the same direction.
9. Monitor the job the daily
Monitor and record the drying process daily to keep accurate records.
10. Clean and sanitize
Clean and disinfect all surfaces again with a biocide.
11. Replace all contents
Once dry, replace all cleaned contents that were removed, carpets, furniture, etc.
