Dow’s Dioxin and Furan Air and Water Emissions Data From 2001 to 2006
Air Emissions
Dow’s dioxin and furan emissions to air are largely point source emissions from incinerator stacks. For the larger manufacturing sites, the data are derived from routine stack sampling for performance monitoring or regulatory requirements. For those sites that are insignificant (based on regulatory criteria) sources of dioxin, less frequent sampling is done and emission factors have been developed from the available data. The following charts show a history of Dow’s air emissions of dioxin globally (first chart) and for Dow’s Freeport, Texas facility as a site-specific example (second chart); the charts are shown in I-TEQ grams per year. One gram is approximately 0.035 of an ounce, or less than 1/4 teaspoon.
Water Emissions
Dow’s emissions of dioxins and furans to water are in all cases from regulated water discharges. From the larger manufacturing sites, the data are derived from a routine sampling program for performance monitoring or regulatory requirements. For those sites that are insignificant (based on regulatory criteria) sources of dioxin, less frequent sampling is done and emission factors have been developed from the available data. The following charts show a history of Dow’s water emissions of dioxin globally (first chart) and for Dow’s Freeport, Texas facility as a site-specific example (second chart); the charts are shown in I-TEQ grams per year. One gram is approximately 0.035 of an ounce, or less than 1/4 teaspoon.
