Pierre River Mine Project

AIR AENV SIRS 6 – 14
Height Above Ground (m)
Height Above Ground (m)
3,000
2,500
2,000
1,500
1,000
500
3,000
2,500
2,000
1,500
1,000
Section 11.1
• Wind Direction – A total of 11 hours at all levels had a difference greater
than 5 degrees.
Figure AENV 10-1 presents vertical profiles of temperature, wind speed and
wind direction for the grid cell containing the Pierre River Mine plant site for two
hours with the largest difference in wind direction. These comparisons show that
the difference between the CALMET data sets is negligible; therefore, the
CALPUFF predictions would not be measurably affected by the incorrect Stony
Plain station location used in the 1995 CALMET data set. These differences
would also not change the conclusions of the air quality impact assessment.
0
260 265 270 275 280 285 290
Temperature (K)
Original 1995 CALMET
Corrected 1995 CALMET
500
0
270 275 280 285 290 295
Temperature (K)
Original 1995 CALMET
Corrected 1995 CALMET
Height Above Ground (m)
Height Above Ground Ground (m)
3,000
2,500
2,000
1,500
1,000
500
May 4, 1995 2 p.m.
0
0 2 4 6
Wind Speed (m/s)
Original 1995 CALMET
Corrected 1995 CALMET
August 15, 1995 1 p.m.
3,000
2,500
2,000
1,500
1,000
500
0
0 2 4
Wind Speed (m/s)
Original 1995 CALMET
Corrected 1995 CALMET
6
0
0 100 200 300
Wind Direction (deg)
Original 1995 CALMET
Corrected 1995 CALMET
11-10 Shell Canada Limited April 2010
CR029
Height Above Ground (m)
Height Above Ground Ground (m)
3,000
2,500
2,000
1,500
1,000
500
3,000
2,500
2,000
1,500
1,000
500
0
0 100 200 300
Wind Direction (deg)
Original 1995 CALMET
Corrected 1995 CALMET
Figure AENV 10-1: Comparison of Temperature, Wind Speed and Wind Direction Vertical
Profiles