- 13 - incorporate the class lives that had been set under section 168. See Rev. Proc. 87-56, 1987-2 C.B. 674. Under Rev. Proc. 87-56, 1987-2 C.B. at 677, asset class 00.3, Land Improvements: Includes improvements directly to or added to land, whether such improvements are section 1245 property or section 1250 property, provided such improvements are depreciable. Examples of such assets might include sidewalks, roads, canals, waterways, drainage facilities, sewers * * * , wharves and docks, bridges, fences, landscaping, shrubbery, or radio and television transmitting towers. * * * Under Rev. Proc. 87-56, Asset Class 01.1--Agriculture: Includes machinery and equipment, grain bins, and fences but no other land improvements, that are used in the production of crops or plants, vines, and trees; * * * . The definitions provided in Rev. Proc. 87-56, supra, do not specifically denominate or classify trellises, drip irrigation systems, or wells, and, accordingly, we must decide the category or class life in which these assets most properly fit. Generally, the class life categories cover two broad groupings--permanent improvements to real property, and machinery and equipment that is not a real property improvement. The “Whiteco” Factors The question of whether property is a permanent improvement to land has long been a subject of tax controversy. There are innumerable depreciation and investment tax credit cases where this very question has been addressed. The parties here sought guidance from one such case where this Court decided whether aPage: Previous 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 NextLast modified: November 10, 2007