Information about specific sites involving hazardous materials business plans and inventories, waste generator permits, Cal ARP, spills, and site remediation may be requested in writing. Please include the complete address of the site in question including the city and zip code and the requestor’s name, address, telephone and fax numbers, and a self-addressed, stamped envelope.

Write to:

Public Health Investigation (PHI)
Custodian of Records
5555 Ferguson Drive, Suite 120-04
Commerce, CA 90022
Phone (323)890-7806 / Fax (323)728-0217

The processing of a request will take approximately two weeks. In order to expedite the request, please indicate the section/unit (i.e. Site Mitigation Unit, Cal ARP Program) that handles the information being requested.

For information regarding:

• Underground storage tanks, please call the Department of Public Works at (626)458-3517.
• Any of the programs implemented by our participating agencies, click on the Contacts link.