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The Environmental Protection Agency establishes fuel quality requirements, which are defined in the Code of Federal Regulations. Currently, sulphur concentration in gasoline is limited to an annual average of 10 ppm, for each refiner. For diesel, the sulphur maximum allowed concentration is 15 ppm, for both road and non-road fuel.
Federal Regulations
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Gasoline
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Introduction
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Sulphur
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Reid Vapour Pressure
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Unleaded gasoline
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Reformulated Gasoline (RFG)
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Benzene
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Diesel
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Definitions
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Sulphur
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Cetane Index and Aromatics
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Marine diesel
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Reference Fuels
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Gasoline - Tier 3
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Diesel
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Renewable Fuel Standard Programme
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Overview of the programme
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Annual target volumes
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Historical Data
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Gasoline sulphur - Tier 2
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Tier 2 On-highway Reference Gasoline
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Tier 2 Off-highway Reference Gasoline
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References
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