The amount of lead (Pb) in outdoor air in Trail is measured at two locations, Butler Park and Birchbank. Data from Butler Park ,a park in the heart of the community and closest to the smelter,  is shown in Figure 1 indicated by the blue line. 

At this time, Federal and BC Provincial governments do not have ambient air quality objectives or standards for Pb; however, it is reasonable to rely on standards from other jurisdictions when this is the case. The green dashed line in Figure 1 indicates 0.15 μg/m3 on a 3-month average (US EPA standard). The Butler Park monitoring station has met the US EPA standard since 2020. 

Summary reports are provided at the bi-monthly public Trail Area Health & Environment Committee (THEC) meetings. Meeting minutes include the air quality reports and are available online.

There is no known safe level of Pb exposure. The Trail Area Health & Environment Committee (THEC) has a goal of continuous reduction of Pb in the community and the partners focus on efforts to achieve this.