Durham Region Logo   York Region Logo

Durham York Energy Centre

Emissions Data

Glossary of Terms

Ammonia (NH3)

Ammonia (NH3) is a colourless gas, which has a pungent odour. There is no ECA emission limit associated with NH3; however, NH3 is required to be monitored for operational purposes. At the DYEC, aqueous NH3 is injected into the furnace as part of the air pollution control system to reduce the emissions of nitrogen oxides (NOx). NH3 emission data is updated hourly and calculated as the rolling average of 24 hours of data measured by the continuous emission monitoring system (CEMS).

Baghouse Inlet Temperature

The baghouse inlet temperature is monitored for operational and compliance purposes. The ECA requires a minimum baghouse inlet temperature of 120 degrees Celsius and a maximum baghouse inlet temperature of 185 degrees Celsius. DYEC baghouse Inlet temperature is updated and reported on an hourly basis.

Cadmium

Cadmium is a metal that can be released to the environment when cadmium containing materials are burned. At the DYEC, cadmium is monitored during the source (stack) tests.

To learn more about cadmium, please visit the following link: http://ec.gc.ca/indicateurs-indicators/default.asp?lang=en&n=7F04A6AB-1&wbdisable=true

Carbon Monoxide (CO)

Carbon Monoxide (CO) is a colourless, odourless, tasteless and poisonous gas typically produced by incomplete combustion. At the DYEC, CO is monitored to ensure waste is fully combusted. The CO data on this website is updated hourly and calculated as the rolling arithmetic average of 4 hours of data measured by the CEMS. As per ECA Condition 6, the CO limit of 40mg/Rm3 is an operational target for the period including initial commissioning to twelve months following the completion of the first Source (Stack) Testing program. Following this period, the carbon monoxide limit is a compliance limit.

To learn more about CO, please visit the following links:

Compliance Data

Compliance data include parameters that have an associated ECA limit.

Dioxins and Furans

Dioxins and Furans are organic compounds which result from combustion processes. At the DYEC, these emissions are monitored using a Long Term Sampling System (LTSS). The performance of the LTSS is evaluated during the source (stack) tests.

To learn more about dioxins and furans, please visit the following link: http://www.ccme.ca/en/resources/air/dioxins_furans.html

Furnace Temperature

The boiler combustion zone (furnace) temperature is monitored for operational and compliance purposes. The ECA requires a minimum furnace temperature of 1,000 degrees Celsius. Furnace temperature is updated and reported on an hourly basis.

Hydrochloric Acid (HCl)

Hydrochloric Acid (HCl) is a clear, colourless gas that can be produced through waste combustion. HCl is monitored for compliance and operational purposes related to the function of the air pollution control (APC) system. HCl emissions on this website is updated hourly and calculated as the rolling arithmetic average of 24 hours of data measured by the CEMS.

Hydrogen Fluoride (HF)

Hydrogen fluoride (HF) is a colourless gas, which has a sharp, pungent smell. HF can be produced through incineration. There is no ECA emission limit associated with HF. HF is monitored for operational purposes related to the function of the air pollution control (APC) system. HF emissions on this website is updated hourly and calculated as the rolling arithmetic average of 24 hours of data measured by the CEMS.

Lead

Lead is a metal that can be released to the environment when lead containing materials are burned. At the DYEC, lead is monitored during the source (stack) tests.

To learn more about lead, please visit the following link: http://www.ec.gc.ca/toxiques-toxics/Default.asp?lang=En&n=D048E4B9-1

Mercury

Mercury is a metal that can be released to the environment when mercury containing materials are burned. At the DYEC, mercury is monitored during the source (stack) tests.

To learn more about mercury, please visit the following link: http://www.ec.gc.ca/mercure-mercury/default.asp?lang=En&n=D64997D2-1

Moisture

There is no regulatory limit associated with moisture; however, moisture is required to be monitored for operational purposes. Moisture is updated hourly and reported on a rolling arithmetic average of 24 hours of data measured by the CEMS.

Nitrogen Oxides (NOx)

Nitrogen oxides (NOx) include the gases nitrogen oxide (NO) and nitrogen dioxide (NO2) and are typically formed from nitrogen in combustion air. NO oxidizes in air to form NO2, which is a major component of smog. NOx emissions on this website are updated hourly and are calculated as the rolling arithmetic average of 24 hours of data measured by the CEMS.

To learn more about NOx, please visit the following links:

Opacity

Opacity is used as an indicator of particulate matter emissions. A continuous opacity monitoring device projects light across the flue gas stream and measures the percentage reduction in light intensity due to interference by particulate matter. If the concentration of particulate matter increases, the amount of light that passes through the flue gas decreases, resulting in a higher opacity value.

The ECA contains two separate limits for opacity data as measured by the continuous opacity monitoring system (COMS). Opacity, updated hourly, is calculated as the rolling arithmetic average of two hours of data, has a limit of 5 per cent. Opacity, updated each minute, is calculated as the rolling arithmetic average of six minutes of data, has a limit of 10 per cent.

To learn more about particulate matter, please visit the following link: http://www.airqualityontario.com/science/pollutants/particulates.php

Operational Data

Operational data include parameters that do not have an associated ECA limit. These parameters provide information to assist the operator to control the process.

Oxygen (O2)

Oxygen (O2) is monitored for operational and compliance purposes. As required by the ECA Condition 6, the concentration of oxygen (O2) shall not be less than 6 per cent by volume on a dry basis, except during the Source (stack) Testing program. During the Source (stack) Testing program, the O2 concentration shall not be less than 5 per cent by volume on a dry basis.

Sulphur Dioxide (SO2)

Sulphur dioxide (SO2) is a colourless gas that smells like burnt matches. SO2 can contribute to the creation of smog and acid rain. SO2 emissions on this website are updated hourly and are calculated as the rolling arithmetic average of 24 hours of data measured by the CEMS.

To learn more about SO2, please visit the following links:

Total Hydrocarbons (Organic Matter as methane CH4)

Hydrocarbons are organic compounds made up primarily of carbon (C) and hydrogen (H), but can also contain oxygen, nitrogen and halogens. Total hydrocarbon data is updated every ten minutes as 10 minute average values as measured by the CEMS. Total Hydrocarbon data recorded by the CEMS is used for operational purposes and does not have an associated ECA limit.

Total Suspended Particulate (TSP)

Total Suspended Particulate (TSP) is a term used to describe airborne matter. TSP includes coarse, PM10 and PM2.5 particles. At the DYEC, TSP is monitored during the source (stack) tests.

To learn more about particulate matter, please visit the following link: http://www.airqualityontario.com/science/pollutants/particulates.php