Kirkland Lake Gold Ltd. - Permit to take water

This proposal is for a new Permit to Take Water for Kirkland Lake Gold Ltd. Water will be taken from three wells for industrial mining purposes at the Detour Lake Mine, located approximately 185 km northeast of Cochrane, via Highway 652 in Northeastern Ontario. Details of the water taking are as follows:

Permit type – New

Source name: PW21-01

• purpose: industrial mining
• maximum rate per minute (litres): 18
• maximum number of hours of taking per day: 24
• maximum volume per day (litres): 24,380
• maximum number of days of taking per year: 365
• \period of taking: January 1 to December 31 for 10 years

Source name: PW21-02

• purpose: industrial mining
• maximum rate per minute (litres): 30
• maximum number of hours of taking per day: 24
• maximum volume per day (litres): 42,790
• maximum number of days of taking per year: 365
• period of taking: January 1 to December 31 for 10 years

Source name: PW21-03

• purpose: industrial mining
• maximum rate per minute (litres): 34
• maximum number of hours of taking per day: 24
• maximum volume per day (litres): 47,670
• maximum number of days of taking per year: 365
• period of taking: January 1 to December 31 for 10 years

There are 3 categories of a Permit to Take Water:

• Category 1: water takings are anticipated to have a lower risk of causing an unacceptable environmental impact/interference
• Category 2: water takings are anticipated to having a higher potential of causing unacceptable environmental impact or interference
• Category 3: water takings are anticipated to have the highest potential of causing unacceptable environmental impactor interference

The proposed water taking qualifies as a Category 3 permit.