GREENHOUSE GAS POLLUTANTS

Building a Greenhouse Gas Emissions Inventory in CEIDARS

Larry HunsakerEmission Inventory Workshop

Air Resources BoardMarch 13, 2006

Air Resources Board Emission Inventory Workshop Spring 2006

On June 1, 2005, Governor Schwarzenegger signed Executive Order S-3-05 which calls for:

• A reduction of California’s Green House Gas (GHG) emissions to 2000 levels by 2010

• A reduction of GHG emissions to 1990 levels by 2020

• A reduction of GHG emissions to 80% below 1990 levels by 2050

Why Develop a CEIDARS Greenhouse Gas Inventory?

Emission Inventory Workshop Spring 2006

Current California GHG Inventory

• The California Energy Commission (CEC) develops the current top down GHG InventoryYear MMTCO2E Gov’s Goal Needed Reduction (%)

1990 439 - -

2000 489 - -

2010 (544) 489 ~10%

2020 (606) 439 ~30%

2050 (836) 88 ~90%

MMTCO2E – Million Metric Tons of CO2 Equivalent Emissions

Air Resources Board15

Transportation40%

Ag & Forestry8%

Industrial23%

Electricity Generation

20%

Other9%

2002 California GHG Emission Breakdown

Emission Inventory Workshop Spring 2006

Developing World 24%

U.S. Is The Largest Single Contributor To GHG Emissions

Russia & Eastern Europe 13%

United States 25%

Europe & Asia 26%

China 12%

Source: U.S. EPA International Emission Inventory

Source: U.S. EPA Global Warming Website In 1998 CO2 Equivalents

Air Resources Board

Current CEIDARS Capability

• CEIDARS currently accepts the following GHG pollutants:

PollutantCO2

Equivalents Formula MW (g/mol) CAS POL

CO2 1 CO2 44 124-38-9 124389

CH4 23 CH4 16 74-82-8 74828

N2O 296 N2O 44 10024-97-2 10024972

HFC-23 12,000 CHF3 70 75-46-7 75467

HFC-134a 1,300 C2H2F4 102 811-97-2 811972

HFC-152a 120 C2H4F2 66 75-37-6 75376

CF4 5,700 CF4 88 75-73-0 75730

SF6 22,200 SF6 146 2551-62-4 2551624

Air Resources Board Emission Inventory Workshop Spring 2006

What We Need From You

• Facility Level GHG Data

• Updated Process Rate data for sources of fuel combustion

• Updated Areawide Source Methods to account for GHG emissions