Also in: Disaster Response and Recovery
Mold Remediation Scope by Area
EPA / NYC DOHMH remediation level, containment, PPE tier, and clearance from affected square footage.
Example
You enter
- Affected area (ft2, summed visible + suspected) 45
- Porous true
- HVAC involved false
- Vulnerable occupant false
You get
- EPA band medium
- NYC DOHMH (2008) category Medium isolated area (10-100 ft2)
- Independent assessor optional
- Post-remediation verification recommended
Checked against published worked examples from: EPA 402-K-01-001 / NYC DOHMH / IICRC S520-2024 remediation scoping.
Details, formula, and sources
Formula or tableDeterministic lookup: EPA 402-K-01-001 area bands (small < 10 ft2, medium 10-100, large > 100); NYC DOHMH 2008 categories (small < 10, medium 10-100, large > 100; HVAC small < 10 and large >= 10 ft2; the 2008 edition supersedes the 2000 edition's Levels I-V). Derived controls: containment (none under 10 ft2 without HVAC, per EPA 402-K-01-001 Table 1; otherwise limited / full) by band and porous material; PPE tier by band; independent assessor when area > 100, HVAC, or vulnerable occupant; clearance for medium/large, HVAC, or vulnerable occupant.
Source and editionEPA 402-K-01-001 (Mold Remediation in Schools and Commercial Buildings) area bands; NYC DOHMH Guidelines on Assessment and Remediation of Fungi in Indoor Environments (November 2008) categories; IICRC S520-2024 by name.
Free accessEPA 402-K-01-001 free at epa.gov/mold; NYC DOHMH guidelines free at nyc.gov. IICRC S520-2024 licensed.
What governsEstimate. AHJ and licensed professional govern.
API field namesaffected_area_ft2, porous, hvac_involved, vulnerable_occupant, band, level, iep_assess, clearance
- EPA area bands small < 10 ft2, medium 10-100, large > 100EPA 402-K-01-001
- HVAC category HVAC-system involvement is its own NYC 2008 category, split at 10 ft2NYC DOHMH guidelines (2008)