Page 1 Page 2 Page 3 Page 4 Page 5 Page 6 Page 7 Page 8 Page 9 Page 10 Page 11 Page 12 Page 13 Page 14 Page 15 Page 16 Page 17 Page 18 Page 19 Page 20 Page 21 Page 22 Page 23 Page 24 Page 25 Page 26 Page 27 Page 28 Page 29 Page 30 Page 31 Page 32 Page 33 Page 34 Page 35 Page 36 Page 37 Page 38 Page 39 Page 40 Page 41 Page 42 Page 43 Page 44 Page 45 Page 46 Page 47 Page 48 Page 49 Page 50 Page 51 Page 52 Page 53 Page 54 Page 55 Page 56 Page 57 Page 58 Page 59 Page 60 Page 61 Page 62 Page 63 Page 64 Page 65 Page 66 Page 67 Page 68 Page 69 Page 70 Page 71 Page 72 Page 73 Page 74 Page 75 Page 76 Page 77 Page 78 Page 79 Page 80 Page 81 Page 82 Page 83 Page 84 Page 85 Page 86 Page 87 Page 88 Page 89 Page 90Seattle City Light 2015 Annual Report 57 THE CITY OF SEATTLE—CITY LIGHT DEPARTMENT NOTES TO FINANCIAL STATEMENTS AS OF AND FOR THE YEARS ENDED DECEMBER 31, 2015 AND 2014 - 57 - or inflation. Cost scenarios were developed that defined a particular solution for a given site. Scenarios considered relevant potential requirements and alternatives for remediation of a site. Costs were calculated on a weighted average that was based on the probabilities of each scenario being selected and reflected cost-sharing agreements in effect. In addition, certain estimates were derived from independent engineers and consultants. The estimates were made with the latest information available; as new information becomes available, estimates may vary significantly due to price increases or reductions, technology, or applicable laws or regulations. The Department is aggressively pursuing other third parties that may have contributed to the contamination of superfund sites for appropriate cost sharing. The Department’s estimate for realized recoveries was $4.1 million and $1.0 million at December 31, 2015, and 2014, respectively, primarily representing an interfund receivable from Seattle Public Utilities for recovery of remediation costs incurred related to the lower Duwamish Waterway site. The Department’s estimate for not yet realized recoveries from other parties for their share of remediation work performed that partially offset the Department’s estimated environmental liabilities were zero at December 31, 2015, and 2014. As of December 31, 2015, and 2014, environmental costs of $31.2 million and $34.5 million were deferred primarily for the cleanup estimate of the Department’s responsibility for the Lower Duwamish Waterway Superfund Site, and these costs will be recovered through future rates in accordance with GASB Statement No. 62. The changes in the provision for environmental liabilities at December 31, 2015, and 2014 are as follows: ($ in millions) 2015 2014 Beginning environmental liability, net of recoveries 57.6 $ 60.2 $ Payments (8.4) (6.4) Incurred environmental liability (3.3) 3.8 Ending environmental liability, net of recoveries 45.9 $ 57.6 $ The provision for environmental liabilities included in current and noncurrent liabilities at December 31, 2015 and 2014, is as follows: ($ in millions) 2015 2014 Noncurrent liabilities 12.3 $ 34.0 $ Accounts payable and other current liabilities 33.6 23.6 Ending liability 45.9 $ 57.6 $ 14. OTHER LIABILITIES Other liabilities include unearned capital fees which are amortized to revenues as earned, deposits that are returned to customers, and certain other unearned revenues which expire at contract completion. Other liabilities at December 31, 2015 and 2014 consisted of the following: