1. (a) The Corrective Action Plan Implementation Phase consists of carrying out the most cost-effective alternative with the smallest anticipated environmental footprint that is selected during the Corrective Action Plan Development Phase for remediation or mitigation of the actual or potential adverse effects of the unauthorized release.
2. (b) Upon the Cleanup Oversight Agency's concurrence with the Corrective Action Plan or as directed by the Cleanup Oversight Agency, a responsible party must implement the Corrective Action Plan. A responsible party must monitor, evaluate, and submit the results of implementation of the Corrective Action Plan on a schedule agreed to by the Cleanup Oversight Agency.

3. (c) A responsible party may begin implementation of the Corrective Action Plan before it has received agency concurrence, if at least 60 days has passed since submittal to the Cleanup Oversight Agency and the responsible party is not otherwise directed in writing by the Cleanup Oversight Agency. Before beginning this cleanup, a responsible party must:

   1. (1) Notify the Cleanup Oversight Agency of its intention to begin cleanup; and
   2. (2) Comply with any conditions set by the Cleanup Oversight Agency, including notification of the public and mitigation of adverse consequences from cleanup activities.
4. (d) If a responsible party determines that the Corrective Action Plan is no longer cost-effective, a responsible party must notify the Cleanup Oversight Agency and recommend modifications to or suspension of cleanup activities.
5. (e) A responsible party must modify or suspend cleanup activities if directed to do so by the Cleanup Oversight Agency.

Note: Authority cited: Sections 25299.3 and 25299.7, Health and Safety Code. Reference: Sections 25296.10, 25296.15, 25296.35 and 25297.15, Health and Safety Code; and 40 CFR Section 280.66.

History

1. New section filed 4-8-2004; operative 5-8-2004 (Register 2004, No. 15).

2. Redesignation and amendment of portions of former subsection (a) as new subsections (a)(1) and (a)(3), new subsection (a)(2), amendment of subsection (c)(6) and amendment of Note filed 10-13-2016; operative 1-1-2017 (Register 2016, No. 42).

3. Amendment of section heading, section and Note filed 8-27-2018; operative 10-1-2018 (Register 2018, No. 35).

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