- A. Except as provided in subsection (C), a registered supplier certifying Arizona CBG or AZRBOB as meeting the requirements of this Article shall use one of the EPA- or CARB-approved ASTM methods listed in Table A, a copy of which may be obtained at: ASTM International, 100 Bar Harbor Drive, West Conshohocken, PA 19428-2959 or www.astm.org. A copy of the CARB methods may be obtained at: California Air Resources Board, P.O. Box 2815, Sacramento, CA 95812 or www.arb.ca.gov.
- B. An oxygenate blender or third-party terminal certifying Arizona CBG or AZRBOB before transport to the CBG-covered area shall measure the oxygenate content in accordance with the oxygenate blender’s or third-party terminal’s approved QA/QC program or in accordance with one of the methods listed in Table A.
- C. Rather than using a method listed in Table A to certify Arizona CBG or AZRBOB, a registered supplier may use the CARBOB Model and use the fuel-quality measures calculated using the CARBOB Model for compliance and reporting purposes.
- D. A test method that the Division determines is equivalent to those listed in Table A may be used to certify Arizona CBG or AZRBOB. The Division has determined that test methods approved by either EPA methodology described in 40 CFR 1090.1360 or CARB are equivalent test methods. EPA referee methods from 40 CFR 80.47 as it existed December 31, 2020, may be used if the tested property is not listed in 40 CFR 1090.1360. If a correlation equation is required by EPA, CARB, or the ASTM test method, the correlation equation shall be used to align the test methods, and becomes part of the equivalent test method.
- 1. Replace the last sentence in ASTM D6550-00 (2010) Section 1.1 with the following: “The application range is from 0.3 to 25 mass percent total olefin, as defined in Section 2263(b), Title 13, California Code of Regulations. If olefin concentrations are not detected, substitute one-half of the detection limit.”
Table A. Arizona Weights and Measures Services Division Test Methods for Arizona CBG and AZRBOB
| Fuel Parameter | Units | Approved Test Methods |
| Aromatics | V% | D1319-20a, D5769-20, D5580-02 (2007) |
| Benzene | V% | D3606-21, D5580-02 (2007) |
| Olefins | V% | D1319-20a, D6550-10 (2010)Footnote 1, D8071-21 |
| Oxygenates | W% | D4815-09 (2009), D4815-15b (2019), D5599-18 |
| Vapor Pressure (Correlation Equation) | psi | D5191-20Footnote 2, 13 CCR Section 2297 |
| Sulfur | wppm | D2622-21, D5453-93 (1993) |
| Distillation T50 | ºF | D86-99aå1, D86-20b |
| Distillation T90 | ºF | D86-99aå1, D86-20b |
Footnotes:
| 2. When determining vapor pressure, the only correlation equation to be used is equation 1 in ASTM D5191-20, Section 14.2, ASTM equation ((.965X)-A). |
Historical Note
New Article 7, Table A recodified from 20 A.A.C. 2, Article 7, Table A at 22 A.A.R. 2786, effective August 15, 2016 (Supp. 16-3).
Amended by final rulemaking at 23 A.A.R. 2280, effective October 2, 2017 (Supp. 17-3). Table A repealed; new Table A made by final rulemaking at 29 A.A.R. 441 (February 3, 2023), effective March 5, 2023 (Supp. 23-1).
Historical Note
New Section R3-7-759 recodified from Section R20-2-759 at 22 A.A.R. 2786, effective August 15, 2016 (Supp. 16-3).
Amended by final rulemaking at 23 A.A.R. 2280, effective October 2, 2017 (Supp. 17-3). Amended by final rulemaking at 24 A.A.R. 2666, effective November 10, 2018 (Supp. 18-3). Amended by final rulemaking at 29 A.A.R. 441 (February 3, 2023), effective March 5, 2023 (Supp. 23-1).