1. (a) After case closure, an owner of a property where an unauthorized release of a hazardous substance from an underground storage tank has occurred must notify the Cleanup Oversight Agency immediately if the owner of a property where an unauthorized release of a hazardous substance from an underground storage tank has occurred becomes aware that information about the release that had been provided to the Cleanup Oversight Agency was inaccurate or not representative of site conditions, if site conditions change, if actual or anticipated uses of area groundwater change, or if any additional abatement may be necessary for the protection of public health, safety, or the environment.
2. (b) The Cleanup Oversight Agency must notify the owner of a property where an unauthorized release of a hazardous substance from an underground storage tank has occurred if the Cleanup Oversight Agency finds that additional site abatement is necessary within 30 days of receiving notification pursuant to subdivision (a), or otherwise receiving notice that information about the release that had been provided to the Cleanup Oversight Agency was inaccurate or not representative of site conditions, that site conditions have changed, that actual or anticipated uses of area groundwater have changed, or that any additional abatement may be necessary for the protection of public health, safety, or the environment.
3. (c) If the Cleanup Oversight Agency determines that additional site abatement is necessary, the owner of a property where an unauthorized release of a hazardous substance from an underground storage tank has occurred must perform any abatement activities as directed by the Cleanup Oversight Agency. The owner of a property where an unauthorized release of a hazardous substance from an underground storage tank has occurred must reimburse all reasonable and necessary oversight costs incurred by the Cleanup Oversight Agency in overseeing any abatement.

Note: Authority cited: Sections 25299.3 and 25299.7, Health and Safety Code. Reference: Sections 25283, 25296.10, 25297.01 and 25297.1, Health and Safety Code.

History

1. New section filed 12-2-91 as an emergency; operative 12-2-91. Text remains in effect uninterrupted pursuant to Health and Safety Code section 25299.77 (Register 92, No. 9).

2. Editorial correction of printing errors in History 1. (Register 92, No. 43).

3. Repealer and new section heading and section filed 10-28-2025; operative 1-1-2026 (Register 2025, No. 44).