Mold Remediation Scope by Area

EPA / NYC DOHMH remediation level, containment, PPE tier, and clearance from affected square footage.

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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 level Level III
Independent assessor optional
Post-remediation verification recommended

Details, formula, and sources

Deterministic lookup: EPA 402-K-01-001 area bands (small < 10 ft2, medium 10-100, large > 100); NYC DOHMH levels (I < 10, II 10-30, III 30-100, IV > 100, V on any HVAC involvement). Derived controls: containment (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.

EPA 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 levels; IICRC S520-2024 by name.

EPA 402-K-01-001 free at epa.gov/mold; NYC DOHMH guidelines free at nyc.gov. IICRC S520-2024 licensed.

Estimate. AHJ and licensed professional govern.

Field names used by the API: affected_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 override any HVAC-system involvement -> NYC DOHMH Level V regardless of areaNYC DOHMH guidelines