Last reviewed on November 2, 2011 at 10:06
Documentation of California's Greenhouse Gas Inventory
(First Edition - Last updated on 11/19/2007)
♦ Category: Waste
IPCC: |
4D1 - Wastewater Treatment and Discharge - Domestic Wastewater Treatment and Discharge |
Sector: |
Industrial : Waste Water Treatment : Domestic Waste Water |
♦ Activity: California population -
♦ Greenhouse gas: Methane ( CH4 )
► Year 1990 —
● Greenhouse gas emission estimate —
Amount: |
95,599 tonnes of CH4 Emitted (2,007,575 tonnes CO2 Eq.) |
Basis: |
Calculation |
Calculation: |
[California Population] * [Per Capita biological organic demand (BOD5)] * [Average number of days per year] * [Proportion of BOD5 anaerobically digested] * [BOD5 CH4 emission factor] |
Reference: |
USEPA (2007). Inventory of U.S. Greenhouse Gas Emissions and Sinks: 1990-2005. United States Environmental Protection Agency. EPA 430-R-07-002. Chapter 8: Waste. April 15, 2007. Washington DC. http://www.epa.gov/climatechange/emissions/usgginv_archive.html |
● Activity level used in calculations —
● Parameters and Constants used in calculations —
Parameter: |
BOD5 CH4 emission factor = 0.6 g / g |
Reference: |
USEPA (2007). Inventory of U.S. Greenhouse Gas Emissions and Sinks: 1990-2005. United States Environmental Protection Agency. EPA 430-R-07-002. Chapter 8: Waste. April 15, 2007. Washington DC. http://www.epa.gov/climatechange/emissions/usgginv_archive.html |
Parameter: |
Per Capita biological organic demand (BOD5) = 90 g / person / day |
Reference: |
USEPA (2007). Inventory of U.S. Greenhouse Gas Emissions and Sinks: 1990-2005. United States Environmental Protection Agency. EPA 430-R-07-002. Chapter 8: Waste. April 15, 2007. Washington DC. http://www.epa.gov/climatechange/emissions/usgginv_archive.html |
Parameter: |
Proportion of BOD5 anaerobically digested = 0.163 |
Reference: |
USEPA (2007). Inventory of U.S. Greenhouse Gas Emissions and Sinks: 1990-2005. United States Environmental Protection Agency. EPA 430-R-07-002. Chapter 8: Waste. April 15, 2007. Washington DC. http://www.epa.gov/climatechange/emissions/usgginv_archive.html |
Constant: |
Average number of days per year = 365.2425 day |
Reference: |
USNO (2004). U.S. Naval Observatory, Astronomical Applications Department, Leap Years. Accessed online at: http://aa.usno.navy.mil/faq/docs/leap_years.php |
Constant: |
Global warming potential of CH4 = 21 |
Reference: |
IPCC (1996). Second Assessment Report. Climate Change 1995: WG I - The Science of Climate Change. Intergovernmental Panel on Climate Change; J.T. Houghton, L.G. Meira Filho, B.A. Callander, N. Harris, A. Kattenberg, and K. Maskell (eds.); Cambridge University Press. Cambridge, U.K. |
● Greenhouse gas emitted per unit activity —
Amount: |
3,205 g (i.e. 3.21 kg) of CH4 per person 67,305 g (i.e. 67.31 kg) of CO2eq. per person |