Last reviewed on November 2, 2011 at 10:04

Documentation of California's Greenhouse Gas Inventory (First Edition - Last updated on 11/19/2007)

♦ Category: Energy

IPCC: 1A2f - Fuel Combustion Activities - Manufacturing Industries and Construction - Non-Metallic Minerals
Sector: Industrial : Manufacturing : Stone, Clay, Glass & Cement : Cement

♦ Activity: Fuel combustion - Tires

♦ Greenhouse gas: Carbon dioxide from biogenic sources ( CO2 )

► Year 1990 —

● Greenhouse gas emission estimate —

Amount: 8,037 tonnes of CO2 From biogenic materials (8,037 tonnes CO2 Eq.)
Basis: Calculation
Calculation: [Fuel combustion] * [Proportion of renewables] * [Heat content] * [Fuel CO2 emission]
Reference: ARB (2009). Technical Support Document for California’s Greenhouse Gas Emissions Inventory and 1990 Emissions Level. California Air Resources Board. (March 2009). Available online at: /cc/inventory/doc/methods_v1/ghg_inventory_technical_support_document.pdf

● Activity level used in calculations —

Activity: Fuel combustion = 14,435 ton of Tires
Basis: Data
Reference: O'Hare, A. T. (2007). Personal communication between CA Air Resources Board Staff and Andrew T. O'Hare of the Portland Cement Association, Washington, DC.

● Parameters and Constants used in calculations —

Parameter: Fuel CO2 emission = 0.0852 g / btu
Reference: WBCSD & WRI (2005). WBCSD Cement Sustainability Initiative, CO2 Emissions Inventory Protocol, Version 2.0. Published by The World Business Council for Sustainable Development and The World Resources Institute in 2005. Available online at:
Parameter: Heat content = 32,678,591 btu / ton
Reference: EIA (2007). Energy Information Administration. Form EIA-906: Monthly Utility Power Plant Database. Available online at:
Parameter: Proportion of renewables = 0.2
Reference: RMA (2007). Rubber Manufacturers Association website. Scrap tires characteristics. Accessed online at:

● Greenhouse gas from biogenic materials per unit activity —

Amount: 556,818 g (i.e. 556.82 kg) of CO2 per ton of Tires