Interactive Monitoring Map 

Mildred Lake

AMS 2 - Mildred Lake

(Latitude: 57.050006 Longitude: -111.564147)

The Mildred lake AMS is located at the Mildred Lake airstrip. This AMS was originally part of Syncrude's air monitoring network. Note the radio antenna on the tower. This antenna receives signals from the Buffalo Viewpoint AMS located in Syncrude's South mine. There are no telephone lines available in the South mine, so two pairs of radio's transmit data from Buffalo Viewpoint AMS to Mildred Lale AMS.

The Mildred Lake AMS contains analyzers that continuously measure SO2, H2S, THC, wind speed and direction, and temperature.

H2S analyzers are based on a scientific measurement principle (fluorescence after thermal oxidation) specified by Alberta Environment in the Air Monitoring Directive (AMD). The H2S analyzers also oxidize other sulphur compounds that are fluoresced and read as H2S. The analyzer can therefore over report actual H2S concentrations.

Within the WBEA network, H2S is measured at some AMS's and Total Reduced Sulphur (TRS) is measured at others. TRS analyzers use the same measurement principle (fluorescence after thermal oxidation) as H2S analyzers, but operate at a different oxidizing temperature. The choice of analyzer for each AMS is mandated by Alberta Environment Reporting Requirements in operating approvals, and by the AMD.

The Alberta Ambient Air Quality Objective (AAAQO) for H2S is based on odour perception.

Current Data

Time of Data:
2017-10-18 22:00:00 (Mountain Standard Time)
ParameterHourly AverageAlberta Ambient Air Quality Objective
SO2 0.08 ppb172 ppb
H2S 0.32 ppb10 ppb
THC 2.13 ppm
Temp @ 2m 0.46 deg. C
Wind Speed @ 10m 10.98 km/h
Wind Dir. @ 10m 115.80 deg.

All air quality monitoring data displayed on this site by the Wood Buffalo Environmental Association is directly from monitoring equipment output signals. Displayed data is generally indicative of ambient conditions, however, it has not been reviewed, validated, nor processed for baseline drift and other fluctuations by qualified technicians. Final processed and validated data values may vary from values displayed on this site. A displayed value of 'n/d' indicates air monitoring data is not available at the corresponding time due to scheduled maintenance and/or instrument calibration. Charted data is locked to the range of the analyzer by default, and can be unlocked by the appropriate control. To access quality-checked and validated historical data, please visit the Alberta Government's airdata warehouse:

Historical Monitoring Data

PLEASE NOTE: When ambient concentrations of any pollutant WBEA measures exceeds the Alberta Ambient Air Quality Objective, WBEA has an immediate Reporting Protocol that is put into action. WBEA analyzers continuously monitor ambient air, and in the event of an exceedence the following steps are taken:

1 - The data collection system automatically sends out alarm notifications to WBEA personnel and an independent third party alarm monitoring company. 

2 - The alarm company acknowledges the incoming alarm and reports the data and supporting information such as wind conditions, locations, time, etc, to Alberta Environment & Parks (AEP) in real time, or as soon as becoming aware of it.

3 - AEP uses the data and information from WBEA to follow up as appropriate.