Cal. Code Regs. tit. 13, § 2262.5
(a) Compliance with the minimum oxygen content cap limit standard in specified areas in the wintertime.
(1) Within the areas and periods set forth in section (a)(2), no person shall sell, offer for sale, supply, offer for supply, or transport California gasoline unless it has an oxygen content of not less than the minimum oxygen content cap limit in section 2262.
(B) October 1 through October 31, (1996 through 2002 only):
South Coast Area
(2)(A) November 1 through February 29:
South Coast Area
Imperial County
(d) Restrictions on adding oxygenates to California gasoline after it has been supplied from the production or import facility.
(e) Application of prohibitions.
(1) Section (a) shall not apply to a transaction occurring in the areas and periods shown in (a)(2) where the person selling, supplying, or offering the gasoline demonstrates as an affirmative defense that, prior to the transaction, he or she has taken reasonably prudent precautions to assure that the gasoline will not be delivered to a retail service station or bulk purchaser-consumer's fueling facility in the areas and periods shown in (a)(2).
(2)(A) Section (a) shall not apply to a transaction occurring in the South Coast Area in October 2000, 2001, 2002, or 2003, where the transaction involves the transfer of gasoline from a stationary storage tank to a motor vehicle fuel tank and the person selling, supplying, or offering the gasoline demonstrates as an affirmative defense that the last delivery of gasoline to the stationary storage tank occurred no later than September 16 of that year.
Note: Authority cited: Sections 39600, 39601, 43013, 43013.1, 43013.7, 43018 and 43101, Health and Safety Code. Reference: Sections 39000, 39001, 39002, 39003, 39010, 39500, 39515, 39516, 41511, 43000, 43013, 43013.1, 43013.7, 43016, 43018, 43101 and 43830.8, Health and Safety Code; and Western Oil and Gas Ass'n. v. Orange County Air Pollution Control District, 14 Cal.3d 411, 121 Cal. Rptr. 249 (1975).
1. New section filed 11-16-92; operative 12-16-92 (Register 92, No. 47).
2. Amendment of subsection (c) filed 6-2-95; operative 7-3-95 (Register 95, No. 22).
3. Amendment of subsections (a)(2)(C) and (d), repealer of subsection (e)(1) and subsection relettering filed 2-28-96; operative 2-28-96 pursuant to Government Code section 11343.4(d) (Register 96, No. 9).
4. Editorial correction of subsection (a)(2)(B) (Register 97, No. 10).
5. Amendment of subsections (a)-(a)(2)(C) and (e)(1), and new subsection (e)(2) filed 9-21-98; operative 9-21-98 pursuant to Government Code section 11343.4(d) (Register 98, No. 39).
6. Amendment of subsection (b) filed 3-31-99; operative 3-31-99 pursuant to Government Code section 11343.4(d) (Register 99, No. 14).
7. Amendment of subsections (a)(2)(A)-(B), new subsection (a)(2)(C) and subsection relettering filed 9-8-99; operative 9-8-99 pursuant to Government Code section 11343.4(d) (Register 99, No. 37).
8. Amendment of section heading, section and Note filed 8-3-2000; operative 9-2-2000 (Register 2000, No. 31).
9. Amendment of subsections (a)(2)(A)-(B), repealer of subsections (a)(2)(C)-(D), new subsection (e)(2)(A) and redesignation and amendment of former subsection (e)(2) as new subsection (e)(2)(B) filed 8-20-2001; operative 8-20-2001 pursuant to Government Code section 11343.4 (Register 2001, No. 34).
10. Amendment filed 12-24-2002; operative 12-24-2002 pursuant to Government Code section 11343.4 (Register 2002, No. 52).
11. Amendment of subsection (b) filed 3-10-2005; operative 4-9-2005 (Register 2005, No. 10).
12. Amendment of subsections (c) and (d)(1) filed 8-29-2008; operative 8-29-2008 pursuant to Government Code section 11343.4 (Register 2008, No. 35).
13. Change without regulatory effect amending subsection (b) and Note filed 3-27-2026 pursuant to section 100, title 1, California Code of Regulations (Register 2026, No. 13).