Essar Steel Algoma Inc.

Air Quality Data

Essar Steel Algoma Inc. monitors air quality through two ambient air quality monitoring stations maintained by the company. The stations are located on Wallace Terrace, just west of Goulais Avenue, and on Patrick Street at Wm. Merrifield Public School.

Click on this link to view a Google Map of the locations.

The stations continuously monitor two key air quality parameters:

	TRS is “Total Reduced Sulphur”. The Ministry of Environment ambient air quality criterion for TRS is 40 micrograms per cubic metre for a one hour period.

	PM10 is “fine particulate matter”. The adopted Ministry of Environment interim ambient air quality criterion for PM10 is 50 micrograms per cubic metre for a 24-hour period, which is based on a Canada Wide Standard.

The following table shows the current data:

Essar Steel Algoma Inc. Air Quality Information
Parameter	Sensor Location	Units	Value
TRS	Wallace Terrace Station	Hourly micrograms per cubic metre	0
PM10 ⁽¹⁾	Wallace Terrace Station	24 hour micrograms per cubic metre	9
TRS	Patrick Street Station	Hourly micrograms per cubic metre	0
~Wind Direction Vector⁽²⁾	Wallace Terrace Station	Hourly degrees	224
Wind Speed Vector⁽²⁾	Wallace Terrace Station	Hourly km/hr	6
Air Temperature	Wallace Terrace Station	Hourly Celcius degrees	-1
Page last updated at 12:00 PM on January 25 2012

~KEY: Wind direction in degrees from 0 to 360
Direction	Degrees
From North	0, 360
From East	90
From South	180
From West	270

Notes:

(1)	PM10 average is based on a 24-hour rolling average period.
(2)	Vector wind speed and direction provide a vector mean of all the instantaneous samples of wind direction and wind speed sampled each hour.