EXHIBIT 99.5

Contractual Cash Obligations



|                                              |  |       |       |  |                       |  |     |                  |  |  |                  |  |  |                  |     |  |  |  |       | 
|--------------------------------------------- |  | ----- | ----- |  | --------------------- |  | --- | ---------------- |  |  | ---------------- |  |  | ---------------- | --- |  |  |  | ----- | 
|As at December 31, 2016
(Cdn$ millions)       |  | Total |       |  | Due inless than1 Year |  |     | Due in1  3Years |  |  | Due in4  5Years |  |  | Due after5 Years |    
|Long-term debt                                |  |       | 1,500 |  |                       |  |    |                  |  |  | 500              |  |  |                  |    |  |  |  | 1,000 | 
|Interest on long-term debt                    |  |       | 475   |  |                       |  | 69  |                  |  |  | 139              |  |  |                  | 82  |  |  |  | 185   | 
|Provision for reclamation                     |  |       | 1,037 |  |                       |  | 18  |                  |  |  | 95               |  |  |                  | 82  |  |  |  | 842   | 
|Provision for waste disposal                  |  |       | 15    |  |                       |  | 2   |                  |  |  | 12               |  |  |                  | 1   |  |  |  |      | 
|Other liabilities                             |  |       | 70    |  |                       |  |    |                  |  |  |                 |  |  |                  |    |  |  |  | 70    | 
|Capital commitments                           |  |       | 51    |  |                       |  | 51  |                  |  |  |                 |  |  |                  |    |  |  |  |      | 
|Unconditional product purchase commitments1
2 |  |       | 991   |  |                       |  | 340 |                  |  |  | 436              |  |  |                  | 145 |  |  |  | 70    | 
|                                              |  |       |       |  |                       |  |     |                  |  |  |                  |  |  |                  |     |  |  |  |       | 
|Total contractual cash obligations            |  |       | 4,139 |  |                       |  | 480 |                  |  |  | 1,182            |  |  |                  | 310 |  |  |  | 2,167 | 
|                                              |  |       |       |  |                       |  |     |                  |  |  |                  |  |  |                  |     |  |  |  |       | 



|1 | Denominated in US dollars. Converted to Canadian dollars at the December 31, 2016 rate of Cdn $1.30.
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|2 | As at February 1, 2017.
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Commercial Commitments



|                                        |  |                         |       | 
|--------------------------------------- |  | ----------------------- | ----- | 
|As at December 31, 2016
(Cdn$ millions) |  | Total Amounts Committed |      
|Standby letters of credit 1             |  |                         | 1,470 | 
|                                        |  |                         |       | 
|Total commercial commitments            |  |                         | 1,470 | 
|                                        |  |                         |       | 



|1 | The standby letters of credit maturing in 2016 were issued with a one-year term and will be automatically renewed on a year-by-year basis until the underlying obligations are resolved. These obligations are primarily the decommissioning and reclamation of our operating sites which are expected
to remain outstanding well into the future and our obligations under the CRA dispute which are expected to remain outstanding until the dispute is resolved.
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