Seattle City Light 2016 ANNUAL REPORT | Audited Financial Statements 42 THE CITY OF SEATTLE—CITY LIGHT DEPARTMENT NOTES TO FINANCIAL STATEMENTS AS OF AND FOR THE YEARS ENDED DECEMBER 31, 2016 AND 2015 - 42 - Fargo under the State of Washington’s statewide custody provider program arranged by the State Treasurer’s Office. The City mitigates counterparty risk by settling trades through its custodian on a delivery-versus-payment method. By investment policy, the City maintains a list of approved securities dealers for transacting business. The City also conducts its own due diligence as to the financial wherewithal of its counterparties. Foreign Currency Risk – The City’s pooled investments do not include securities denominated in foreign currencies. The City of Seattle’s Comprehensive Annual Financial Report may be obtained by writing to The City of Seattle, Department of Finance and Administrative Services, P.O. Box 94689, Seattle, WA 98124-4689; telephone: (206) 684-2489, or obtained on-line at http:/www.seattle.gov/financial- services/comprehensive-annual-financial-report. 6. ACCOUNTS RECEIVABLE Accounts receivable at December 31, 2016 and 2015, consist of: ($ in millions) Retail Wholesale Other Operating Nonoperating Electric Power Operating Subtotal Subtotal Total 2016 Accounts receivable 56.1 $ 11.7 $ 12.8 $ 80.6 $ 22.8 $ 103.4 $ Less allowance for doubtful accounts (3.4) - (7.3) (10.7) - (10.7) 52.7 $ 11.7 $ 5.5 $ 69.9 $ 22.8 $ 92.7 $ 2015 Accounts receivable 46.3 $ 9.8 $ 11.5 $ 67.6 $ 19.5 $ 87.1 $ Less allowance for doubtful accounts (2.8) - (5.6) (8.4) - (8.4) 43.5 $ 9.8 $ 5.9 $ 59.2 $ 19.5 $ 78.7 $ Wholesale power receivable includes $2.1 million at December 31, 2016, and $1.5 million at December 31, 2015, for exchange energy at fair value under long-term contracts (see Note 18 Long-Term Purchased Power, Exchanges, and Transmission). 7. OTHER ASSETS Seattle City Council passed resolutions which authorized certain costs to be financed by debt and reported as regulatory assets in accordance with Statement No. 62 of the GASB, Codification of Accounting and Financial Reporting Guidance Contained in Pre-November 30, 1989 FASB & AICPA Pronouncements. Programmatic conservation costs incurred by the Department and not funded by third parties and Endangered Species Act costs are reported as regulatory assets in accordance with GASB Statement No. 62 and amortized over 20 years. Endangered Species Act costs are amortized over the remaining license period (see Note 16 Commitments and Contingencies). Environmental costs reported as regulatory assets are amortized over 25 years, beginning in the year costs are paid. Other assets, which are not covered under GASB Statement No. 62, consist of: