California - Fuels

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The Californian Air Resources Board (CARB) instigated, in three phases, the development of a reformulated gasoline specification, including a sulphur limit of 20 ppm but provides flexible methods of compliance with the specified properties using "flat" or "averaging" limits. Up to 10% ethanol may be blended in gasoline.

CARB Diesel mandates aromatic hydrocarbon limits additional to the US Federal specification but also with flexible means of compliance; a 15 ppm sulphur limit has been applicable since 2006.

A Low Carbon Fuel Standard also applies to all fuels, with the aim to reduce the carbon intensity of transport fuels by 20% by 2030, compared with the 2010 emissions levels.

Gasoline

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Ethanol for blending

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Diesel

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Other fuels

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Introduction

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Methanol

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Ethanol

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CNG

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LPG

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Hydrogen

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Reference Fuels

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Overview

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Gasoline reference fuels

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Diesel reference fuels

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Low Carbon Fuel Standard

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Overview

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Carbon Intensity requirements

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References

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Last update: 23/03/2022