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50 \ 3. Fixed Capital and Rate Base Fixed Capital Fixed capital in service may be classified as both tangible and intangible which is represented by plant facilities and water rights that are used and useful in rendering service to the water customers of the Las Vegas Land and Y/ater Company. The capital thus employed is first classified as between the two systems, namely, A - The Water Production Facilities (Los Angeles & Salt Lake Railroad Co.) B - The Water Utility (Las Vegas Land and Water Company). . Each of these capital groups is in turn set up under three primary capital bases, which are: I - Investment Cost. - the recorded costs as set up on the books of the two companies. II - Original Cost - the investment cost as adjusted for: (a) Land with adjusted acreage at present-day costs. (b) Increase in investment costs resulting from increase in capital costs on replacements of like plant units (mains), which amounts were not capitalized on the books under betterment accounting^' (c) Acquisition adjustments - difference between recorded costs (investment costs) and costs to the original owner of the acquired properties. 1/ Both companies follow the accounting procedure prescribed by the Interstate Commerce Commission, wherein only the betterment in the replacement of a retired plant unit is capitalized. Under the I.C.C. system of accounting, the definition and treatment of betterments are covered by the following statement: “Betterments are improvements of parts (minor items) of ex­isting facilities through the substitution of superior parts for inferior parts replaced. The cost chargeable to the ac­counts of this classification is the excess cost of new parts over the cost at current prices of new parts of the kind re­placed.” (Footnote continued on page 31)