ISRA requires owners of facilities with specific
industrial classifications to investigate and remediate prior to property transfers
when the business ceases operations or is sold. Facilities with certain North
American Industry Classification System (NAICS) codes are subject to ISRA. To
search for a specific NAICS code, please see the United States Census Bureau Page at
Frequently Asked Questions about NAICS are available at
The Department has developed a Guide
describing the ISRA process to assist property owners and Licensed Site Remediation Professionals.