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SECTION IV <br />WATER TRANSMISSION LINES <br />EXISTING SYSTEM <br />At the present time there are two pipes carrying water from the plant to <br />the vicinity of the storage tanks. One is a 20 -inch wood line installed in <br />1925 while the other is a 20 -inch cast iron pipe installed in 1942. Sections <br />of each of these lines were examined and found to be in excellent condition. <br />The character of the water is such that tuberculation is entirely absent from <br />both lines. These lines are not cross - connected until they reach the storage <br />tanks. For the purpose of designation, we shall refer to this pair of lines <br />jointly as transmission system "A ". <br />At a point adjacent to the storage tanks, the lines of transmission <br />system "A" are connected to a pair of pipelines continuing to the city. One <br />of these is a 24 -inch wood line constructed in 1925 while the other is a 12- <br />inch cast iron pipe installed in 1937. Recently, a 34 -inch steel pipeline <br />has been installed running from the vicinity of Eighth and Colorado to a <br />point approximately one mile east of the storage tanks. All three of these <br />lines are adequately cross - connected. We shall refer to these three pipe- <br />lines jointly as transmission system 'IV. <br />There exists, at the storage tanks where the two systems join, a concrete <br />structure in which the transition takes place and the systems are connected <br />to the storage tanks. This point is definitely a bottle -neck in the over -all <br />transmission system and is creating an appreciable loss of available head. <br />Due to the design at the time of the small tank construction and subsequent <br />additions with little thought of future needs, this point has resulted in a <br />conglomeration of valves, reducers and undersized cross - connections. <br />- 22 - <br />