(A) The depreciation of all exhaustible fixed assets used by proprietary funds is charged as an expense against their operations. Depreciation of proprietary fund fixed assets has be provided for using the straight line method over their estimated useful life. No depreciation is provided for nor taken on general fixed assets.
(B) The estimated useful lives are as follows:
(1) Land improvements–7 to 10 years;
(2) Buildings–20 to 45 years;
(3) Office equipment–3 to 15 years;
(4) Other equipment–3 to 15 years;
(5) Wells, plant, and transmission system vehicles–2 to 12 years.
(Ord. 02-48, passed 11-13-02)