(a) Except as provided in subdivision (b), secondary containment must be tested for tightness upon installation and at least once every 36 months by a service technician meeting the requirements of section 2633.
- (2) Secondary containment components of Type 1 and Type 2 underground storage tank systems must be tested within 30 days of discontinuing continuous vacuum, pressure, or hydrostatic interstitial monitoring of the primary and secondary containment, and at least once every 36 months.
(b)(1) Secondary containment components monitored using continuous vacuum, pressure, or hydrostatic interstitial monitoring are exempt from periodic secondary containment testing requirements.
- (c) Testing of secondary containment must be conducted using a test procedure that demonstrates that the system performs at least as well as it did upon installation. For example, if the secondary containment was tested upon installation by using a test method that applied a pressure of five pounds per square inch, then the periodic test must be conducted using a method that tests the system at an equivalent pressure. These tests must be performed in accordance with manufacturer's guidelines, an applicable method specified in an industry code or engineering standard, or if approved by the Unified Program Agency, a test method developed by a state registered professional engineer.
- (d) Testing of piping secondary containment must include verification of continuity between the most distant points in the zone to the extent practical as approved by the Unified Program Agency.
- (e) The results of the secondary containment test must be recorded on the “Secondary Containment Testing Report Form” located in appendix 8.
Note: Authority cited: Sections 25299.3 and 25299.7, Health and Safety Code. Reference: Sections 25284.1, 25291, 25290.1 and 25290.2, Health and Safety Code; and 40 CFR Sections 280.20 and 280.40-280.45.
History
1. New section filed 4-5-94; operative 5-5-94 (Register 94, No. 14).
2. New subsection (e) and amendment of Note filed 5-14-2001; operative 5-14-2001 pursuant to Government Code section 11343.4 (Register 2001, No. 20).
3. Amendment of subsection (e) filed 12-18-2007; operative 1-17-2008 (Register 2007, No. 51).
4. Amendment of section and Note filed 8-27-2018; operative 10-1-2018 (Register 2018, No. 35).
5. Repealer and new section heading and section filed 10-28-2025; operative 1-1-2026 (Register 2025, No. 44).