13 CA ADC § 2266.5 Page 1

13 CCR s 2266.5 

Cal. Admin. Code tit. 13, s 2266.5 

© 2010 Thomson Reuters. No Claim to Orig. US Gov. Works.

BARCLAYS OFFICIAL CALIFORNIA CODE OF 

REGULATIONS

TITLE 13. MOTOR VEHICLES

DIVISION 3. AIR RESOURCES BOARD

CHAPTER 5. STANDARDS FOR MOTOR VEHICLE FUELS

ARTICLE 1. STANDARDS FOR GASOLINE

SUBARTICLE 2. STANDARDS FOR GASOLINE 

SOLD BEGINNING MARCH 1, 1996

This database is current through 12/26/2003, Register

2003, No. 52.

s 2266.5. Requirements Pertaining to California Reformulated Gasoline Blendstock for Oxygen Blending 

(CARBOB) and Downstream Blending.

(a)Application of the California gasoline standards to 

CARBOB.

(1)Applicability of standards and requirements to CARBOB.All of the standards and requirements in sections 

2261, 2262, 2262.3, 2262.4, 2262.5(a), (b), (c) and (e), 

2262.6, 2264, 2264.2, 2265, 2266, 2267, 2268, 2270(b) 

and (c), 2271 and 2272 pertaining to California gasoline or 

transactions involving California gasoline also apply to 

CARBOB or transactions involving CARBOB. Whenever 

the term "California gasoline" is used in the sections identified in the preceding sentence, the term means "California gasoline or CARBOB." Whenever the term "gasoline" 

is used in section 2265(b)(1), the term means "California 

gasoline or CARBOB."

(2)Determining whether a final blend of CARBOB complies with the standards for California gasoline.

(A)General.

1. Applicability. This section (a)(2) governs the determination of whether a final blend of CARBOB complies with 

the standards for California gasoline that apply when the 

gasoline is sold or supplied from the production or import 

facility at which it was produced or imported. Section 

(a)(6) governs the determination of whether downstream 

CARBOB that has already been supplied from its production or import facility complies with the applicable cap 

limits for California gasoline.

2. Where a producer or importer has designated a final 

blend as CARBOB and has complied with all applicable 

provisions of this section 2266.5, the properties of the final 

blend for purposes of compliance with sections 2262, 

2262.3, 2262.4, 2262.5, 2262.6, 2265 and 2266 shall be 

determined in accordance with section (a)(2)(B) or 

(a)(2)(C) as applicable.

3. If the producer or importer has not complied with all 

applicable provisions of this section 2266.5, the properties 

of the final blend for purposes of the producer's or importer's compliance with the limits for sulfur, benzene, aromatic hydrocarbons, olefins, T50, T90, and oxygen required by sections 2262.3, 2262.5, 2265 and 2266 shall be 

determined without using the CARBOB Model or adding 

oxygenate to the gasoline, and compliance with the flat 

limits for Reid vapor pressure and oxygenates required by 

sections 2262.4, 2262.6, 2265 and 2266 shall be determined in accordance with section (a)(2)(B) or (a)(2)(C) as 

applicable.

(B)Determining whether a final blend of CARBOB complies with the standards for California gasoline by use of 

the CARBOB Model.

1. A producer or importer may elect to have the CARBOB 

model used in determining whether a final blend designated as CARBOB complies with the standards applicable 

to California gasoline, by providing the notice in section 

(b)(1)(C). In this case, the CARBOB limits for the final 

blend shall be determined in accordance with the "Procedures for Using the California Model for California Reformulated Gasoline Blendstocks for Oxygenate Blending 

(CARBOB)," as adopted April 25, 2001. The CARBOB's 

compliance with the assigned CARBOB limit for a property shall constitute compliance with the corresponding 

finished gasoline limit - be it a section 2262 flat limit, PM 

flat limit, TC limit, or (if no designated alternative limit has 

been established) section 2262 or PM averaging limit. In 

addition, where the producer or importer has elected to use 

the CARBOB model for a given final blend that is not 

being transferred from its production or import facility 

during the Reid vapor pressure control period for that 

facility set forth in section 2262.4(a), the final blend must 

have a Reid vapor pressure no lower than the value used in 

the T50 CARBOB model.

2. Notwithstanding section (a)(2)(B)1., where a final 
13 CA ADC § 2266.5 Page 2

13 CCR s 2266.5 

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blend of CARBOB is sampled and analyzed by a state 

board inspector in accordance with section 2263 using the 

methodology in (a)(2)(C), the results may be used to establish a violation of applicable standards for California 

gasoline.

(C)Determining whether a final blend of CARBOB complies with the standards for California gasoline by oxygenate blending and testing.Except as otherwise provided in 

section (a)(2)(B), the properties of a final blend of 

CARBOB shall be determined for purposes of compliance 

with sections 2262, 2262.3, 2262.4, 2262.5 2262.6, 2265 

and 2266 by adding the specified type and amount of 

oxygenate to a representative sample of the CARBOB and 

determining the properties and characteristics of the resulting gasoline in accordance with an applicable test 

method identified in section 2263(b) or permitted under 

section 2263(c). Where the producer or importer has in 

accordance with section (b)(1)(E) designated a range for 

oxygen from denatured ethanol of 1.8 wt.% to 2.2 wt.% (or 

a range that is within 1.8 wt.% and 2.2 wt.% and includes 

2.0 wt.%), denatured ethanol equal to 5.7 vol. % of the 

blended volume shall be added; where the designated 

range for oxygen from denatured ethanol is 2.5 wt.% to 2.9 

wt.% (or is within 2.5 wt.% and 2.9% and includes 2.7 

wt.%), denatured ethanol equal to 7.7 vol.% of the blended 

volume shall be added; and where the designated range for 

oxygen from denatured ethanol is 3.3 wt.% to 3.7 wt.% (or 

is within 3.3 wt.% and 3.7 wt.% and includes 3.5 wt.%), 

denatured ethanol equal to 10.0 vol.% of the blended volume shall be added. In all other cases where the designated range for oxygen from denatured ethanol is no 

greater than 0.4 wt.%, the amount of denatured ethanol 

added shall be the volume percent that results in an oxygen 

content at the midpoint of the range of oxygen, based on 

the following equation:

Vol.% Denatured Ethanol = 620 P[(218.8 Pwt.% oxygen) 

- 0.40]

Where the producer or importer has in accordance with 

section (b)(1)(E) designated a range of amounts of oxygen 

that is greater than 0.4 wt.%, or an oxygenate other than 

denatured ethanol, the oxygenate shall be added in an 

amount that results in an oxygen content within 0.2 wt.% 

of the designated minimum oxygen level.

(D)Characteristics of denatured ethanol used in determining whether a final blend of CARBOB complies with 

the standards for California gasoline.

1.Default denatured ethanol characteristics on or after 

December 31, 2003 when the CARBOB Model is 

used.Except as provided in section (a)(2)(D)3., where a 

producer or importer has elected to use the CARBOB 

Model for a final blend of CARBOB supplied from its 

production or import facility on or after December 31, 

2003, the following default denatured ethanol specifications shall be specified for the CARBOB Model:

Sulfur content: 10 parts per million

Benzene content: 0.06 volume percent 

Olefin content: 0.5 volume percent

Aromatic hydrocarbon content: 1.7 volume percent 

2.Default denatured ethanol characteristics on or after 

December 31, 2003 when the CARBOB Model is not 

used.Except as provided in section (a)(2)(D)3., where a 

producer or importer has not elected to use the CARBOB 

Model, denatured ethanol used as the oxygenate must have 

the following properties in determining whether CARBOB 

complies with the standards applicable to California gasoline when it is supplied from the production facility or 

import facility on or after December 31, 2003:

Sulfur content: 3-10 parts per million

Benzene content: 0-0.06 volume percent 

Olefin content: 0-0.5 volume percent

Aromatic hydrocarbon content: 0-1.7 volume percent 

3.Producer- or importer-specified characteristics of denatured ethanol used in determining whether a final blend of 

CARBOB complies with the standards for California gasoline.

a. With respect to a final blend of CARBOB supplied from 

its production or import facility prior to December 31, 

2003, the producer or importer must specify the properties 
13 CA ADC § 2266.5 Page 3

13 CCR s 2266.5 

Cal. Admin. Code tit. 13, s 2266.5 

© 2010 Thomson Reuters. No Claim to Orig. US Gov. Works.

of the oxygenate used in determining whether the final 

blend of CARBOB complies with the applicable California 

gasoline standards, by providing the notice in section 

(b)(1)(D). With respect to a final blend of CARBOB supplied from its production or import facility on or after 

December 31, 2003, the producer or importer may elect to 

specify the properties of the oxygenate in accordance with 

the preceding sentence. Where the producer or importer 

has elected to use the CARBOB model in connection with 

the final blend, the maximum value for each property 

identified in the section (b)(1)(D) notification shall be used 

for the CARBOB Model. Where the producer or importer 

has not elected to use the CARBOB model in connection 

with the final blend, the oxygenate used in oxygenate 

blending and testing in accordance with section (a)(2)(C)1. 

must not exceed the maximum value for each property 

identified in the section (b)(1)(D) notification; that oxygenate's specifications for each property may be under the 

maximum value for each property identified in the section 

(b)(1)(D) notification by no more than the following:

Sulfur content: 5 parts per million

Benzene content: 0.06 volume percent

Olefin content: 0.1 volume percent 

Aromatic hydrocarbon content: 1.0 volume percent 

b.Maintaining oxygenate samples for use in compliance 

testing.A producer or importer who is specifying the 

properties of the oxygenate used in a final blend of 

CARBOB in accordance with the preceding section 

(a)(2)(D)3.a. must maintain at the production or import 

facility, while the final blend is at the facility, oxygenate 

meeting the required specifications in quantities that are 

sufficient to enable state board inspectors to use the oxygenate in compliance determinations.

(E)Protocol for determining whether a final blend of 

CARBOB complies with the standards for California gasoline.The executive officer may enter into a written protocol with any individual producer or importer for the

purpose of specifying a alternative method for determining 

whether a final blend of CARBOB complies with the 

standards for California gasoline, as long as the executive 

officer reasonably determines that application of the protocol is not less stringent or enforceable than application of 

the express terms of section (a)(2)(A)-(D). Any such protocol shall include the producer's or importer's agreement 

to be bound by the terms of the protocol.

(3)Calculating the volume of a final blend of CARBOB.Where a producer or importer has designated a final 

blend as CARBOB and has complied with all applicable 

provisions of this section 2266.5, the volume of the final 

blend shall be calculated for all purposes under section 

2264 by adding the minimum designated amount of the 

oxygenate having the smallest volume designated by the 

producer or importer. If the producer or importer has not 

complied with any applicable provisions of this section 

2266.5, the volume of the final blend for purposes of the 

refiner or producer's compliance with sections 2262, 

2262.3, 2262.4, 2262.5, 2262.6, 2265 and 2266 shall be 

calculated without adding the amount of oxygenate to the 

CARBOB.

(4)Specifications for a final blend of CARBOB when the 

CARBOB model is not being used.A producer or importer 

who has not elected to use the CARBOB model pursuant to 

section (a)(2)(B) with regard to a final blend of CARBOB 

may not sell, offer for sale, supply or offer for sale that 

final blend of CARBOB from its production facility or 

import facility where the sulfur, benzene, olefin or aromatic hydrocarbon content of the CARBOB, when multiplied by (1 minus the designated maximum volume percent, expressed as a decimal fraction, that the oxygenate 

will represent after it is added to the CARBOB), results in a 

sulfur, benzene, olefin or aromatic hydrocarbon content 

value exceeding the applicable limit for that property.

(5)Assignment of designated alternative limits for 

CARBOB and for the oxygenated California gasoline 

where the producer or importer has elected to use the 

CARBOB model.

(A) Applicability. This section (a)(5) applies where a 

producer or importer has elected to have the CARBOB 

model apply in connection with a final blend of CARBOB 

which is also subject to an averaging compliance option or 

a PM averaging compliance option for one or more properties.

(B) Assignment of CARBOB designated alternative limit. 

The producer or importer may assign a CARBOB designated alternative limit for the final blend of CARBOB by 

satisfying the notification requirements of section 

(a)(5)(D). In no case shall a CARBOB designated alternative limit be less than the sulfur, benzene, olefin or aro-
13 CA ADC § 2266.5 Page 4

13 CCR s 2266.5 

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© 2010 Thomson Reuters. No Claim to Orig. US Gov. Works.

matic hydrocarbon content, or T90 or T50, of the final 

blend shown by the sample and test of the CARBOB 

conducted pursuant to section 2270. The CARBOB designated alternative limit shall be treated as the designated 

alternative limit under section 2262.3(c)(2), and a violation 

of section 2262.3(c)(2) will exist when the CARBOB 

exceeds the CARBOB designated alternative limit.

(C) Determining the designated alternative limit for the 

final blend after the CARBOB is oxygenated. Whenever a 

producer or importer has assigned a designated alternative 

limit for a final blend of CARBOB, the designated alternative limit for the final blend after the CARBOB is oxygenated shall be determined in accordance with the "Procedures for Using the California Model for California 

Reformulated Gasoline Blendstocks for Oxygenate 

Blending (CARBOB)," as adopted April 25, 2001. This 

will be the final blend's designated alternative limit for 

purposes of compliance with sections 2262.3(c)(3) and 

2264(b) and (c).

(D) Notification. The producer or importer shall notify the 

executive officer of the CARBOB designated alternative 

limit, the designated alternative limit for the final blend 

after it is oxygenated, and all other information identified 

in section 2264(a)(2)(A), within the time limits set forth in 

section 2264(a)(2)(A) and subject to section 2264(a)(3) 

and (4).

(6)Determining whether downstream CARBOB complies 

with the cap limits for California gasoline.

(A)Determining whether downstream CARBOB complies 

with the cap limits for California gasoline through the use 

of CARBOB cap limits derived from the CARBOB Model.Whenever downstream CARBOB designated for ethanol blending has already been supplied from its production 

or import facility, the CARBOB's compliance with the cap 

limits for California gasoline may be determined by applying the CARBOB cap limits in the following table:

Property CARBOB Cap Limits

CaRFG2 CaRFG3

Reid Vapor Pressure [FN1] 5.78 5.99

(pounds per square inch)

Sulfur Content 89 66 [FN2]

(parts per million by weight) 32 [FN2]

Benzine Content 1.33 1.22

(percent by volume)

Aromatics Content 33.1 38.7

(percent by volume)

Olefins Content 11.1 11.1

(percent by volume)

T50 232 [FN3] 232 [FN3]

(degrees Fahrenheit) 237 [FN3] 237 [FN3]

T90 335 335

(degrees Fahrenheit)

----------

[FN1] The Reid vapor pressure standards apply only during the warmer weather 

months identified in section 2262.4.

[FN2] The CaRFG Phase 3 CARBOB cap limits for sulfur are phased in starting

December 31, 2003, and December 31, 2004, in accordance with section

2261(b)(1)(A).

[FN3] The first number applies to CARBOB that is subject to the Reid vapor

 pressure standard pursuant to section 2262.4, and the second number applies 

to CARBOB that is not subject to the Reid vapor pressure standard.

(B)Determining whether downstream CARBOB complies 

with the cap limits for California gasoline by oxygenate 

blending and testing.Whenever downstream CARBOB 

designated for oxygenate blending has already been supplied from its production or import facility, the CARBOB's 

compliance with the cap limits for California gasoline may 

be determined by adding the specified type and amount of 

oxygenate to a representative sample of the CARBOB and 

determining the properties and characteristics of the resulting gasoline in accordance with an applicable test 
13 CA ADC § 2266.5 Page 5

13 CCR s 2266.5 

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© 2010 Thomson Reuters. No Claim to Orig. US Gov. Works.

method identified in section 2263(b) or permitted under 

section 2263(c). Denatured ethanol used as the oxygenate 

must have the properties set forth in section (a)(2)(D)2. 

Where the designated range for oxygen from denatured 

ethanol is 1.8 wt.% and 2.2 wt.% (or is within 1.8 wt.% and 

2.2 wt.% and includes 2.0 wt.%), denatured ethanol equal 

to 5.7 vol.% of the blended volume shall be added; where 

the designated range for oxygen from denatured ethanol is 

2.5 wt.% and 2.9 wt.% (or is within 2.5 wt.% and 2.9 wt.% 

and includes 2.7 wt.%), denatured ethanol equal to 7.7 

vol.% of the blended volume shall be added; and where the 

designated range for oxygen from denatured ethanol is 3.3 

wt.% to 3.7 wt.% (or is within 3.3 wt.% and 3.7 wt.% and 

includes 3/5 wt.%), denatured ethanol equal to 10.0 vol.% 

of the blended volume shall be added. In all other cases 

where the designated range for oxygen from denatured 

ethanol is no greater than 0.4 wt.%, the amount of denatured ethanol added shall be the volume percent that results 

in an oxygen content at the midpoint of the range of oxygen, based on the following equation:

Vol.% Denatured Ethanol = 620 P[(218.8 Pwt.% oxygen) 

- 0.40]

Where the designated a range of amounts of oxygen is 

greater than 0.4 wt.%, or an oxygenate other than denatured ethanol is designated, the oxygenate shall be added in 

an amount that results in an oxygen content within 0.2 

wt.% of the designated minimum oxygen level.

(C)Protocols.A person may enter into a protocol with the 

executive officer for the purpose of identifying more 

stringent specifications for the denatured ethanol used 

pursuant to section (a)(6)(B), or different CARBOB cap 

limits under section (a)(6)(A), if the executive officer 

reasonably determines that the specifications or cap limits 

are reasonably premised on the person's program to assure 

that the denatured ethanol added to the CARBOB by 

oxygenate blenders will meet the more stringent specifications.

(b) Notification to ARB regarding the supply of CARBOB 

from the facility at which it was produced or imported.

(1) A producer or importer supplying a final blend of 

CARBOB from the facility at which the producer or importer produced or imported the CARBOB must notify the 

executive officer of the information set forth below, along 

with any information required under section 2265(a)(2) 

(for a PM alternative gasoline formulation) or 2266(c) (for 

a test-certified alternative gasoline formulation). The notification must be received by the executive officer before 

the start of physical transfer of the final blend of CARBOB 

from the production or import facility, and in no case less 

than 12 hours before the producer or importer either completes physical transfer or commingles the final blend.

(A) The identity and location of the final blend;

(B) The designation of the final blend as CARBOB;

(C) If the producer or importer is electing to use the 

CARBOB model to determine whether the final blend 

complies with the standards applicable to California gasoline when it is supplied from the production facility or 

import facility, a statement of that election and

1. Each of the CARBOB limits that will apply to the final 

blend for properties not subject to the averaging compliance option or the PM averaging compliance option; and

2. For any property subject to the averaging compliance 

option or the PM averaging compliance option, the averaging or PM averaging limit for the CARBOB (the 

CARBOB is subject to this limit only if no designated 

alternative limit is assigned to the CARBOB pursuant to 

section 2266.5(a)(5)(B));

(D) If the producer or importer is specifying, pursuant to 

section (a)(2)(D)3., the properties of the oxygenate to be 

added downstream by the oxygenate blender, a statement 

of that election, the type of oxygenate, and the oxygenate's 

specifications for the following properties:

Maximum sulfur content (nearest part per million by 

weight)

Maximum benzene content (nearest hundredth of a percent by volume)

Maximum olefin content (nearest tenth of a percent by 

volume)

Maximum aromatic hydrocarbon content (nearest tenth of 

a percent by volume)

(E) The designation of each oxygenate type or types and 

amount or range of amounts to be added to the CARBOB, 

and the applicable flat limit, PM alternative specification, 

or TC alternative specification for oxygen. The amount or 

range of amounts of oxygenate to be added shall be ex-
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13 CCR s 2266.5 

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pressed as a volume percent of the gasoline after the oxygenate is added, in the nearest tenth of a percent. For any 

final blend of CARBOB except one that is subject to PM 

alternative specifications or TC alternative specifications, 

the amount of oxygenate to be added must be such that the 

resulting California gasoline will have a minimum oxygen 

content no lower than 1.8 percent by weight and a maximum oxygen content no greater than 2.2 percent by 

weight. For a final blend of CARBOB that is subject to PM 

alternative specifications, the amount or range of amounts 

of oxygenate to be added must be such that the resulting 

California gasoline has an oxygen content that meets the 

oxygen content PM alternative specification for the final 

blend. For a final blend of CARBOB that is subject to TC 

alternative specifications, the amount or range of amounts 

of oxygenate to be added must be such that the resulting 

California gasoline has an oxygen content that meets the 

oxygen content alternative specification for the final blend:

(2) Applicability of notification to subsequent final 

blends. The notification a producer or importer provides 

pursuant to section (b)(1)(B), (C), (D) and (E) for a final 

blend of CARBOB shall apply to all subsequent final 

blends of CARBOB or California gasoline supplied by the 

producer or importer from the same production or import 

facility until the producer or importer designates a final 

blend at that facility as either (i) California gasoline rather 

than CARBOB, or (ii) CARBOB subject to a new notification made pursuant to section (b)(1).

(3) Allowance of late notifications. If, through no intentional or negligent conduct, a producer or importer cannot 

report within the time period specified in (b)(1) above, the 

producer or importer may notify the executive officer of 

the required data as soon as reasonably possible and may 

provide a written explanation of the cause of the delay in 

reporting. If, based on the written explanation and the 

surrounding circumstances, the executive officer determines that the conditions of this section (b)(3) have been 

met, timely notification shall be deemed to have occurred.

(4) Protocols. The executive officer may enter into a 

written protocol with any individual producer or importer 

for the purpose of specifying how the requirements in 

section (b)(1) shall be applied to the producer's or importer's particular operations, as long as the executive officer 

reasonably determines that application of the regulatory 

requirements under the protocol is not less stringent or 

enforceable than application of the express terms of section 

(b)(1). Any such protocol shall include the producer's or 

importer's agreement to be bound by the terms of the protocol.

(c) Sampling, testing and recordkeeping by importers of 

CARBOB.

(1) When sampling and testing is required. Each importer 

of CARBOB shall sample and test for the sulfur, aromatic 

hydrocarbon, olefin, oxygen and benzene content, T50, 

T90, and, during the regulatory control periods identified 

in section 2262.4(a)(2) and (b)(2), the Reid vapor pressure, 

of each final blend of CARBOB which the importer has 

imported by tankship, pipeline, railway tankcars, trucks 

and trailers, or other means, by collecting and analyzing a 

representative sample of CARBOB taken from the final 

blend at its import facility. An importer who is electing to 

use the CARBOB model in determining compliance shall 

analyze the CARBOB without adding oxygenate. In all 

other cases, the importer shall oxygenate and analyze the 

CARBOB in accordance with section (a)(2)(C).

(2) Maintaining records. Each importer required to sample 

and analyze a final blend of CARBOB pursuant to this 

section (c) shall maintain, for two years from the date of 

each sampling, records showing the sample date, identify 

of blend or product sampled, container or other vessel 

sampled, the final blend volume, and the sulfur, aromatic 

hydrocarbon, olefin, oxygen and benzene content, T50, 

T90, and Reid vapor pressure as determined in accordance 

with section (a)(2). All CARBOB imported by the importer and not tested as required by this section shall be 

deemed to have a Reid vapor pressure, sulfur, aromatic 

hydrocarbon, olefin, oxygen and benzene content, T50 and 

T90 exceeding the applicable flat limit or averaging limit 

standards specified in section 2262, unless the importer 

demonstrates that the CARBOB meets those standards and 

limit(s).

(3) Production of records. An importer shall provide to the 

executive officer any records required to be maintained by 

the importer pursuant to this section (c) within 20 days of a 

written request from the executive officer if the request is 

received before expiration of the period during which the 

records are required to be maintained. Whenever an importer fails to provide records regarding a final blend of 

CARBOB in accordance with the requirements of this 

section, the final blend of CARBOB shall be presumed to 

have been sold by the importer in violation of the applicable flat limit or averaging limit standards and compliance requirements in sections 2262, 2262.3(b) or (c), 

2262.4(b), or 2262.5(c), unless the importer demonstrates 

that the CARBOB meets those standards and limit(s).
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(4) Protocols. The executive officer may enter into a 

protocol with any importer for the purpose of specifying 

alternative sampling, testing, recordkeeping, or reporting 

requirements which shall satisfy the provisions of sections 

(c)(1) or (c)(2). The executive officer may only enter into 

such a protocol if s/he reasonably determines that application of the regulatory requirements under the protocol will 

be consistent with the state board's ability effectively to 

enforce the provisions of sections 2262, 2262.3(b) or (c), 

2262.4(b), or 2262.5(c), and the PM averaging limit(s). 

Any such protocol shall include the importer's agreement 

to be bound by the terms of the protocol.

(d) Documentation required when CARBOB is transferred.

(1) Required Documentation. On each occasion when any 

person transfers custody or title of CARBOB, the transferor shall provide the transferee a document that prominently:

(A) States that the CARBOB does not comply with the 

standards for California gasoline without the addition of 

oxygenate,

(B) Identifies the applicable flat limit, PM alternative 

specification, or TC alternative specification for oxygen, 

and

(C) Identifies, consistent with the notification made pursuant to section (b), the oxygenate type or types and 

amount or range of amounts that must be added to the 

CARBOB to make it comply with the standards for California gasoline. Where the producer or importer of the 

CARBOB has elected to specify the properties of the 

oxygenate pursuant to section (b)(1)(D), the document 

must also prominently identify the maximum permitted 

sulfur, benzene, olefin and aromatic hydrocarbon contents 

- not to exceed the maximum levels in the section (b)(1)(D) 

notification - of the oxygenate to be added to the CARBOB.

(2) Compliance by pipeline operator. A pipeline operator 

may comply with this requirement by the use of standardized product codes on pipeline tickets, where the code(s) 

specified for the CARBOB is identified in a manual that is 

distributed to transferees of the CARBOB and that sets 

forth all of the required information for the CARBOB.

(e)Restrictions on transferring CARBOB.

(1) Required agreement by transferee. No person may 

transfer ownership or custody of CARBOB to any other 

person unless the transferee has agreed in writing with the 

transferor that either:

(A) The transferee is a registered oxygenate blender and 

will add oxygenate of the type(s) and amount (or within the 

range of amounts) designated in accordance with section 

(b) before the CARBOB is transferred from a final distribution facility, or

(B) The transferee will take all reasonably prudent steps 

necessary to assure that the CARBOB is transferred to a 

registered oxygen blender who adds the type and amount 

(or within the range of amounts) of oxygenate designated 

in accordance with section (b) to the CARBOB before the 

CARBOB is transfered from a final distribution facility.

(2) Prohibited sales of CARBOB from a final distribution 

facility. No person may sell or supply CARBOB from a 

final distribition facility where the type and amount or 

range of amounts of oxygenate designated in accordance 

with section (b) has not been added to the CARBOB.

(f) Restrictions on blending CARBOB with other products.

(1) Basic prohibition. No person may combine any 

CARBOB that has been supplied from the facility at which 

it was produced or imported with any other CARBOB, 

gasoline, blendstock or oxygenate, except:

(A) The specified oxygenate.

1. The CARBOB may be blended with oxygenate of the 

type and amount (or within the range of amounts) specified 

by the producer or importer at the time the CARBOB was 

supplied from the production or import facility.

2. Where ethanol is the specified oxygenate and specifications for the ethanol are identified in the product transfer 

document for the CARBOB pursuant to section 

2266.5(d)(1)(C), only ethanol meeting those specifications 

may be combined with the CARBOB.

3. Where ethanol is the specified oxygenate and specifications for the ethanol are not identified, only ethanol 

meeting the standards in section 2262.9(a) may be com-
13 CA ADC § 2266.5 Page 8

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bined with the CARBOB.

(B) Identically-specified CARBOB. The CARBOB may 

be blended with other CARBOB for which the same oxygenate type, and the same amount (or range of amounts) of 

oxygen, was specified by the producer or importer at the 

time the CARBOB was supplied from the production or 

import facility. However, where specifications for the 

denatured ethanol to be added to the CARBOB have been 

established pursuant to section 2266.5(a)(2)(D)3, it may 

only be blended with other CARBOB for which the same 

denatured ethanol specifications have been set.

(C) CARBOB specified for different oxygen level. Where 

a person is changing from an initial to a new type of 

CARBOB stored in a storage tank at a terminal or bulk 

plant, and the conditions below are met; in this case, the 

CARBOB in the tank after the new type of CARBOB is 

added will be treated as that new type of CARBOB.

1. The change in service is for legitimate operational 

reasons and is not for the purpose of combining the different types of CARBOB;

2. The initial and new CARBOBs are designated for 

blending with different amounts (or ranges of amounts) of 

oxygen, and the change in oxygen content will not exceed 

1.1 weight percent of the oxygenated gasoline blend;

3. The volume of the new CARBOB that is added to the 

tank is at least four times as large as the volume of the 

initial CARBOB in the tank, and

4. The sulfur content of the new CARBOB added to the 

tank is no more than 12 parts per million.

(D) California gasoline not subject to RVP standard. 

Where a person is changing from California gasoline to 

CARBOB as the product stored in a storage tank at a terminal or bulk plant and the conditions below are met; in 

this case the product in the tank, pipe or manifold after the 

new product is added will be treated as the new type of 

product.

1. The change in service is for legitimate operational 

reasons and is not for the purpose of combining the California gasoline and CARBOB and

2. The resulting blend of product in the tank is supplied 

from the terminal or bulk plant during a time that it is not 

subject to the standards for Reid vapor pressure under 

section 2262.4.

(2) Protocols. Notwithstanding section (f)(1), the executive officer may enter into a written protocol with any 

person to identify conditions under which the person may 

lawfully combine CARBOB with California gasoline or 

other CARBOB during a changeover in service of a storage tank for a legitimate operational business reason. The 

executive officer may only enter into such a protocol if he 

or she reasonably determines that commingling of the two 

products will be minimized as much as is reasonably 

practical. Any such protocol shall include the person's 

agreement to be bound by the terms of the protocol.

(g) Requirements for oxygenate blenders.

(1) Registration and Certification.

(A) Registration. Any oxygen blender must register with 

the executive officer by March 1, 1996, or at least 20 days 

before blending oxygenates with CARBOB, whichever 

occurs later. Thereafter, an oxygenate blender must register with the executive officer annually by January 1. The 

registration must be addressed to he attention of the Chief, 

Compliance Division, California Air Resources Board, 

P.O. Box 2815, Sacramento, CA, 95812.

(B) Required contents of registration. The registration 

must include the following:

1. The oxygen blender's contact name, telephone number, 

principal place of business which shall be a physical address and not a post office box, and any other place of 

business at which company records are maintained.

2. For each of the oxygen blender's oxygenate blending 

facilities, the facility name, physical location, contact 

name, and telephone number.

(C) Issuance of certificate. The executive officer shall 

provide each complying oxygen blender with a certificate 

of registration compliance no later than June 30. The certification shall be effective from no later than July 1, 

through June 30 of the following year. The certification 

shall constitute the oxygen blender's certification pursuant 

to Health and Safety Code section 43021.

(D) Submittal of updated information. Any oxygen 

blender must submit updated registration information to 
13 CA ADC § 2266.5 Page 9

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the executive officer at the address identified in section 

(g)(1)(A) within 30 days of any occasion when the registration information previously supplied becomes incomplete or inaccurate.

(2) Requirement to add oxygenate to CARBOB. Whenever an oxygenate blender receives CARBOB from a 

transferor to whom the oxygenate blender has represented 

that he/she will add oxygenate to the CARBOB, the oxygenate blender must add to the CARBOB oxygenate of the 

type(s) and amount (or within the range of amounts) identified in the documentation accompanying the CARBOB. 

If the documentation identifies the permitted maximum 

sulfur, benzene, olefin and aromatic hydrocarbon contents 

of the oxygenate, the oxygenate blender must add an 

oxygenate that does not exceed the maximum permitted 

levels.

(3) Additional requirements for terminal blending. Any 

oxygenate blender who makes a final blend of California 

reformulated gasoline by blending any oxygenate with any 

CARBOB in any gasoline storage tank, other than a truck 

used for delivering gasoline to retail outlets or bulk purchaser-consumer facilities, shall, for each such final blend, 

determine the oxygen content and volume of the final 

blend prior to its leaving the oxygen blending facility, by 

collecting and analyzing a representative sample of gasoline taken from the final blend, using methodology set 

forth in section 2263.

(h) Downstream blending of California gasoline with 

nonoxygenate blendstocks.

(1) Basic prohibition. No person may combine California 

gasoline which has been supplied from a production or 

import facility with any nonoxygenate blendstock, other 

than vapor recovery condensate, unless the person can 

affirmatively demonstrate that (1) the blendstock that is 

added to the California gasoline meets all of the California 

gasoline standards without regard to the properties of the 

gasoline to which the blendstock is added, and (2) the 

person meets with regard to the blendstock all requirements in this subarticle applicable to producers of California gasoline.

(2) Exceptions.

(A) Protocols.Notwithstanding section (i)(1), the executive officer may enter into a written protocol with any 

person to identify conditions under which the person may 

lawfully blend transmix into California gasoline which has 

been supplied from its production or import facility. The 

executive officer may only enter into such a protocol if he 

or she reasonably determines that alternatives to the 

blending are not practical and the blending will not significantly affect the properties of the California gasoline 

into which the transmix is added. Any such protocol shall 

include the person's agreement to be bound by the terms of 

the protocol.

(B) Blending to meet a cap limit.Notwithstanding, section 

(i)(1), a person may add nonoxygenate blendstock to California gasoline that does not comply with one or more of 

the applicable cap limits contained in section 2262, where 

the person obtains the prior approval of the executive officer based on a demonstration that adding the blendstock 

is a reasonable means of bringing the gasoline into compliance with the cap limits.

(i) Restrictions during the RVP season on blending gasoline containing ethanol with California gasoline not containing ethanol.

(1) Basic prohibition. Within each air basin during the 

Reid vapor pressure cap limit periods specified in section 

2262.4(a)(2), no person may combine California gasoline 

produced using ethanol with California gasoline produced 

without using ethanol, unless the person can affirmatively 

demonstrate that: (A) the resulting blend complies with the 

cap limit for Reid vapor pressure set forth in section 2262, 

or (B) the person has taken reasonably prudent precautions 

to assure that the gasoline is not subject to the Reid vapor 

pressure cap limit either because of sections 2261(d) or (f) 

or 2262.4(c)(1) or (c)(3), or because the gasoline is no 

longer California gasoline.

(2) Exception. Section 2266.5(i)(1) does not apply to 

combining California gasolines that are in a motor vehicle's fuel tank.

<General Materials (GM) - References, Annotations, or 

Tables>

Note: Authority cited: Sections 39600, 39601, 43013, 

43013.1, 43018 and 43101, Health and Safety Code; 

andWestern Oil and Gas Ass'n. v.Orange County Air 

Pollution Control District, 14 Cal.3d 411, 121 Cal. Rptr. 

249 (1975). Reference: Sections 39000, 39001, 39002, 

39003, 39010, 39500, 39515, 39516, 41511, 43000, 

43013, 43013.1, 43016, 43018, 43021 and 43101, Health 

and Safety Code; andWestern Oil and Gas Ass'n. v.Orange 

County Air Pollution Control District, 14 Cal.3d 411, 121 
13 CA ADC § 2266.5 Page 10

13 CCR s 2266.5 

Cal. Admin. Code tit. 13, s 2266.5 

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Cal. Rptr. 249 (1975). 

HISTORY 

1. New section filed 2-28-96; operative 2-28-96 pursuant to Government Code

section 11343.4(d) (Register 96, No. 9).

2. Editorial correction of subsection (a)(1) (Register 2000, No. 31).

3. Amendment of section and Notefiled 8-3-2000; operative 9-2-2000 (Register

2000, No. 31).

4. Amendment filed 8-20-2001; operative 8-20-2001 pursuant to Government

Code section 11343.4 (Register 2001, No. 34).

5. Amendment filed 12-24-2002; operative 12-24-2002 pursuant to Goverment Code 

section 11343.4 (Register 2002, No. 52).

6. Amendment of subsection (h)(2) and redesignation and amendment of former

subsections (h)(2)-(3) to subsections (h)(2)(A)-(B) filed 5-1-2003; operative

5-1-2003 pursuant to Government Code section 11343.4 (Register 2003, No.

18).

13 CA ADC s 2266.5 

END OF DOCUMENT