10.13 Non-Consumer Pesticides

10.13.1 Emissions

Introduction

Categories 1190 – 1193 account for emissions from all pesticide usage for agricultural, commercial, and institutional purposes. Agricultural use includes pesticide applications to crops, rangelands, pastures, cemeteries, parks, golf courses, and along roadsides and railroad right-of-ways. Additionally, all post-harvest pesticide treatment of agricultural goods, along with pesticide use in poultry, fish production, and some livestock applications all fall under the agricultural definition. Non-agricultural use includes structural operators, professional gardeners, and (non-agricultural) pest control operators. These categories do not include pesticides sold from retail stores in small quantities for home consumers. Consumer pesticides are covered in consumer product categories 1494-1509.

Prior to 1996, the agricultural and non-agricultural pesticide divisions each consisted of application and residual categories for both synthetic and non-synthetic pesticides. The District had eleven categories associated with non-consumer product pesticides. Creosote application was considered a separate category. In 1996, the two divisions (agriculture and non-agriculture) were broken down into methyl bromide and other categories. The creosote application category is now incorporated in both the agricultural and non-agricultural pesticide’s “Other” categories.

Methodologies

The following table lists the Pesticides Categories and their 2011 total organic emissions (TOG) in tons/day.

(#tab:misc-pesticide-daily_emissions-table)TOG emissions from inventoried pesticides (2011).
category CY2011 pollutant unit
#1190 Agricultural, Methyl Bromide 0.055 TOG ton/day
#1191 Agricultural, Other 0.829 TOG ton/day
#1192 Non-Ag/Consumer, Methyl Bromide 0.003 TOG ton/day
#1193 Non-Ag/Consumer, Other 0.165 TOG ton/day
Total 1.052

The California Department of Pesticide Regulation (DPR) provided the pesticide use data to the California Air Resources Board (ARB). The TOG emissions data for the years 2005 to 2009 are actual data estimated from the DPR Pesticide Reports.

For Categories 1190 and 1191, the 2010 and 2011 the TOG emissions were grown from the year 2007. The year 2007 is the mid-point of the 5 year average. (Both ARB and DPR agreed the use of a 5-year average of historical data as an adjusted value would account for weather and pest infestation variability in agricultural pesticide emissions.)

For Categories 1192 and 1193, the 2010 and 2011 TOG emissions were grown from the year 2009.

Monthly Variation

Monthly activity variation data is based on pesticide usage data in the Bay Area.

County Distribution

The county distribution is also based on pesticide usage for each county in the District.

Table 10.36: County fractions.
category ALA CC MAR NAP SF SM SNC SOL SON
#1190 Agricultural, Methyl Bromide 15.1% 5.6% – 27.6% – 0.3% 50.0% 0.9% 0.6%
#1191 Agricultural, Other 5.0% 12.5% 1.4% 13.7% 0.2% 9.6% 44.1% 2.3% 11.2%
#1192 Non-Ag/Consumer, Methyl Bromide – – 9.2% – – – 52.6% – 38.2%
#1193 Non-Ag/Consumer, Other 12.0% 12.9% 3.8% 1.4% 3.7% 18.6% 23.6% 3.3% 20.7%