10.9 Animal Waste, Other
10.9.1 Emissions
Introduction
Emissions from this category are from waste products of domestic animals (pets) and other native animals including dogs, cats, deer, and wild pigs.
Methodology
The animal population was estimated based on pet to human ratios taken from the report, “Evaluation of Emissions from Selected Uninventoried Sources in the State of California” by Dickson, R. and Tate, S. Population of dogs and cats was estimated based on this ratio with the population of each county. Of the wildlife animals, only deer and wild pigs were considered significant. Numbers of heads for these animals were made based on county land area ratios estimates by the Department of Fish and Game. The emissions are calculated by multiplying emission factor and population of each animal type.
Monthly Variation
Monthly distribution was estimated evenly over the twelve months.
County Distribution
The county distribution was based on dog population for the nine counties, and correspondingly, showed: Alameda-18.5%, Contra Costa-16.4%, Marin-4.6%, Napa- 2.9%, San Francisco-10.6%, San Mateo-12.9%, Santa Clara-21.9%, Solano-5.3%, and Sonoma-6.9%.
| category | ALA | CC | MAR | NAP | SF | SM | SNC | SOL | SON |
|---|---|---|---|---|---|---|---|---|---|
| #760 Animal Waste, Other | 21.7% | 14.8% | 3.7% | 1.9% | 11.7% | 10.4% | 25.5% | 4.2% | 6.0% |
10.9.2 Trends
History
Emissions through the years were estimated based on ARB’s relative values of dollar output for growth in Agriculture-stock of each county.
Growth
| category | backcast | forecast | profile |
|---|---|---|---|
| #760 Animal Waste, Other | Yes | Yes | #659 Households |
Projections to 2030 were based on the same growth profile of ABAG’s 2009 Projections.
By: Michael Nguyen Date: January, 2014 Base Year 2011