AR <strong>2011</strong> PG 62 9. EXPLORATION <strong>and</strong> Evaluation assets (“E&E”) (Canadian dollar in thous<strong>and</strong>s) Upstream Segment – Canada Cost Balance, January 1, 2010 $ 96,162 Additions 25,220 Disposition (172) Transferred to assets classified as held for sale (note 8.1) (8,688) Balance, December 31, 2010 112,522 Additions 22,399 Disposition (13,107) Balance, December 31, <strong>2011</strong> $ 121,814 Accumulated amortization <strong>and</strong> impairment Balance, January 1, 2010 $ – Charge for the year 4,609 Transferred to assets classified as held for sale (note 8.1) (3,036) Balance, December 31, 2010 1,573 Charge for the year 3,637 Disposition (825) Balance, December 31, <strong>2011</strong> $ 4,385 Carrying amount As at January 1, 2010 $ 96,162 As at December 31, 2010 $ 110,949 As at December 31, <strong>2011</strong> $ 117,429 E&E assets include unproved l<strong>and</strong> <strong>and</strong> the company’s oil s<strong>and</strong>s projects which are pending the determination of technical feasibility <strong>and</strong> commercial viability. In <strong>2011</strong>, the company sold certain unproved properties relating to its oil s<strong>and</strong>s <strong>and</strong> conventional operations for the net proceeds of $29.3 million <strong>and</strong> recorded a gain of $17.4 million. All of the company’s E&E assets are collateralized to secure long–term debt. See note 13.
AR <strong>2011</strong> PG 63 10. PROPERTY, Plant <strong>and</strong> Equipment (Canadian dollar in thous<strong>and</strong>s) Petroleum <strong>and</strong> natural gas properties (Upstream) Refining (Downstream) Corporate Total Cost Balance, January 1, 2010 $ 1,029,396 $ 105,789 $ 12,272 $ 1,147,457 Additions 207,219 8,575 2,128 217,922 Dispositions (4,036) – – (4,036) Change in decommissioning liabilities (note 14) 16,023 – – 16,023 Foreign currency translation changes – (5,887) – (5,887) Transferred to assets classified as held for sale (59,679) – – (59,679) (note 8.1) Balance, December 31, 2010 1,188,923 108,477 14,400 1,311,800 Additions 115,946 18,653 1,454 136,053 Change in decommissioning liabilities (note 14) 4,976 – – 4,976 Dispositions (8,986) – – (8,986) Foreign currency translation changes – 2,932 – 2,932 Balance, December 31, <strong>2011</strong> $ 1,300,859 $ 130,062 $ 15,854 $ 1,446,775 Accumulated depletion, depreciation <strong>and</strong> impairment Balance, January 1, 2010 $ – $ 18,075 $ 5,468 $ 23,543 Depletion <strong>and</strong> depreciation 61,604 10,470 2,330 74,404 Impairment charge 4,476 – – 4,476 Dispositions (1,676) – – (1,676) Foreign currency translation changes – (1,284) – (1,284) Transferred to assets classified as held for sale (5,331) – – (5,331) (note 8.1) Balance, December 31, 2010 59,073 27,261 7,798 94,132 Depletion <strong>and</strong> depreciation 82,905 9,278 1,859 94,042 Impairment charge 24,700 – – 24,700 Dispositions (1,590) – – (1,590) Foreign currency translation changes – 857 – 857 Balance, December 31, <strong>2011</strong> $ 165,088 $ 37,396 $ 9,657 $ 212,141 Carrying amount At January 1, 2010 $ 1,029,396 $ 87,714 $ 6,804 $ 1,123,914 At December 31, 2010 $ 1,129,850 $ 81,216 $ 6,602 $ 1,217,668 At December 31, <strong>2011</strong> $ 1,135,771 $ 92,666 $ 6,197 $ 1,234,634 In May <strong>2011</strong>, the company acquired certain petroleum <strong>and</strong> natural gas properties for cash consideration of $9.7 million. The acquisition resulted in the allocation of $11.9 million to upstream property, plant <strong>and</strong> equipment <strong>and</strong> $2.2 million to decommissioning liabilities. In <strong>2011</strong>, the company sold certain petroleum <strong>and</strong> natural gas properties relating to its conventional operations for the net proceeds of $9.7 million <strong>and</strong> recorded a gain of $2.3 million. Due to the reduction of reserves relating to its conventional petroleum <strong>and</strong> natural gas properties, the company performed an impairment test of its Central Alberta CGU (part of upstream segment) as at December 31, <strong>2011</strong> <strong>and</strong> recognized an impairment charge of $24.7 million (included in depletion, depreciation, amortization <strong>and</strong> impairment) based on the difference between the carrying amount <strong>and</strong> the recoverable amount. The recoverable amount was determined using the value in use calculated using a 10% discounted cash flows. Due to a substantial decrease in natural gas prices, the company performed an impairment test of its Northwest Alberta CGU (part of upstream segment) as at December 31, 2010 <strong>and</strong> recognized an impairment charge of $4.5 million based on the difference between the carrying amount <strong>and</strong> the recoverable amount. The recoverable amount was determined using the fair value less costs to sell which was derived from the sale price agreed under the binding sale agreement with the third party. The net carrying amount at December 31, <strong>2011</strong>, includes $21.2 million (2010: $8.6 million) of Refining (Downstream) assets in the course of construction <strong>and</strong> not subject to depreciation. Property, plant <strong>and</strong> equipment with a carrying cost of $1,223 million (2010: $1,205 million) is collateralized to secure long–term debt. See note 13.