Here are some things to keep in mind to better understand what the Emissions Inventory Reports represent.
1. The District is responsible for preparing inventory reports for facilities subject to the requirements. Emissions included in an inventory are from stationary sources (emitting devices) that are typically required to have District permits. However, stationary sources that are permit exempt may also be included in the inventory. Stationary sources do not include mobile or biogenic sources, or accidental releases.
3. The District implements two Emissions Inventory programs: the Criteria Pollutant Emissions Inventory and the Toxic Emissions Inventory (Air Toxics “Hot Spots” Program). Inventories with the header “Emissions Inventory Report” fulfill both the Criteria Pollutant and Toxic Emissions Inventory requirements. Inventories with the header “Criteria Emissions Inventory Report” fulfill only the Criteria Pollutant Emissions Inventory requirements. Though toxic emissions are presented in the Criteria Pollutant Emissions Inventories, it should be understood the toxic emissions presented may be incomplete and are not considered for the Toxic Emissions Inventory.
4. To coincide with the implementation of ARB's Air Toxic Control Measure for
Stationary Compression Ignition Engines, the District began including diesel
particulate matter emissions in the inventories starting in 2005. Diesel particulate matter emissions are quantified for diesel engines only; and are not quantified for boilers, turbines or any other diesel combustion equipment. Prior to 2005, the emissions from diesel engines were reported as individual toxic pollutants that compose diesel exhaust. This is similar to how emissions are reported for boilers, turbines and other diesel combustion equipment
