Site Classification
NYSDEC defines five classifications for "Registry" hazardous waste sites, ranging from Class 1 (imminent danger; immediate action) and Class 2 (significant threat; action required) through Classes 4 and 5 (properly closed, with differing management needs). Classification is used to communicate threat level and remediation posture.
- Where it applies
- New York State
- When it comes up
- Due diligence; remediation strategy
- Property types
- Contaminated land; redevelopment candidates
In practice
Operators should treat "Class 4" sites as closed but managed; this implies ongoing obligations rather than full release.
Related terms
RegistryState SuperfundSite CharacterizationRemedial Investigation
Environmental and Due Diligence
- Action (SEQRA)
- All Appropriate Inquiries (AAI)
- Brownfield
- Brownfield Cleanup Agreement (BCA)
- Brownfield Cleanup Program (BCP)
- Certificate of Completion (COC)
- City Environmental Quality Review (CEQR)
- Conditioned Negative Declaration (CND)
- Decision Document
- Determination of Significance
General information, not legal, tax or financial advice.