130419-03MN107-App G7 Air Monitoring-IA2E.pdf - NIRB

EXECUTIVE SUMMARYThe 2012 dust and air quality monitoring program at Meadowbank was conducted in support of theAir Quality Monitoring Plan - Addendum (Golder, 2008). The objective of the 2012 program was tomeasure dustfall, total suspended particulates (TSP), PM10, PM2.5 and NO 2 at four monitoringlocations around the Meadowbank site. Locations were established in 2011 in consultation withEnvironment Canada.Results obtained for the measured parameters were compared to Government of NunavutEnvironmental Standards for Ambient Air Quality (October, 2011), where applicable (TSP, PM2.5,NO 2 ).Mass concentrations of suspended particulates (ie TSP, PM10, PM2.5) could not be normalized tostandard temperature and pressure (STP) as required for direct comparison to GN standards.However, the values obtained in this monitoring program are expected to be higher than they wouldbe if calculated for STP. With this assumption, GN standards were not exceeded for the applicablemeasured parameters (TSP, PM2.5, NO 2 ) at any time point or monitoring location in 2012.Dustfall results were compared to the Alberta Environment Department’s recreational area dustfallguideline for context. This guideline was exceeded at least once at all stations prior to May, 2012.However, the guideline was not exceeded at any site beginning in June 2012, which coincided withincreased dust suppression efforts at the mine site.ii