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and cast iron and range from 6 inches to 27 inches in diameter. In general, service <br />lines are 4 inches in diameter. <br />1. Existing Facilities <br />The existing wastewater collection system studied by ADS consists of 968,741 <br />linear feet of collection line, 928,939 linear feet being gravity mains, and 39,802 <br />lineaz feet being force mains. There are a total of 2653 access structures that <br />include 1624 manholes, 123 cleanouts, 144 tees, 748 end-of-line structures, and 14 <br />pump stations. The majority of the collection system is composed of 6" and 8" <br />pipes. Sewage generally flows northerly to the city's wastewater treatment plant. <br />ADS Environmental Services, Inc. <br />II-4 <br />