Activity data uncertainties

National production statistics should be available and likely have an uncertainty of ± 10 percent. For Tier 2, the total amount of reducing agents and process materials used for lead production would likely be within 10 percent. Tier 3 requires plant-specific information on production data (about 5 percent uncertainty). In addition, actual emissions data for tier 3 would be expected to have ± 5 percent uncertainty.

Table 4.23 Uncertainty ranges

Method

Data Source

Uncertainty Range

Tier 1

National Production Data Default Emission Factor Emission Factors by Process Type

i 10% i 50% i 20%

Tier 2

Amounts and Types of Reducing Agents Used Process Material Carbon Contents

i 10% i 15%

Tier 3

Facility-Derived = Process Materials Data Facility-Specific Measured CO2 Data Facility-Specific Emission Factors

i 5% i 5% i 5%

Was this article helpful?

0 0
Guide to Alternative Fuels

Guide to Alternative Fuels

Your Alternative Fuel Solution for Saving Money, Reducing Oil Dependency, and Helping the Planet. Ethanol is an alternative to gasoline. The use of ethanol has been demonstrated to reduce greenhouse emissions slightly as compared to gasoline. Through this ebook, you are going to learn what you will need to know why choosing an alternative fuel may benefit you and your future.

Get My Free Ebook


Post a comment