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<br /> D. Res\dent\a\ ,and uses represent 3, 6, and '7 LUEs per acre for <br /> low, med\um, and high density housing, respectively <br /> E. Comerctal and tndustria11and uses represent 5 LUEs per acre <br /> 5. Projected wastewater flows for the service area were generated for <br /> S-year, 1 a-year, 2O-year planning horizons (yea-s ending 1990, 1995, and <br /> 2005) and ultimate bui1dout based on the projected land use bui1dout <br /> schedules. <br /> 1he projected lUE. demaoos êI"Id wastewater news for each planning <br /> horizon and for each entity are presented in Table 3. <br /> 6. A preHminary design for faci\1ties. including phasing of construction. <br /> was prepared in order to meet the projected wastewater demand for the <br /> 20-year planning horizon. The plNliocludes two g-avity interceptors serving <br /> both sides of IH 35 aM a combined interceptor lea(jjog to the wastewater <br /> treatment plant site. Uft stations and force mains will be reQUired to serve <br /> the areas west of IH 35 and within the North San Marcos Service Area. as weH <br /> as the area to the south of the Municipal Airport. The proposed treatment <br /> plant site \S in the vicinity of the municipal airport on the unnamed tributary <br /> of the San Marcos River (see attached map). <br /> 7. Construction cost estimates were calculated for each facUity. The <br /> esttmates were based on unit costs for facility components in t 985 do\1ars. <br /> Contingency costs of t 5~ and engineering costs of \ O~ of construction were <br /> inchJded. The specific faciHUes and their estimated construction costs for <br /> the 5-year, to-year and 20-year planning horizons are presented in Tables <br /> 4A. 48, 4C and 5. <br /> The interceptor pipeline is to be instaHed at fun size initiaHy to avoid <br /> the added cost of construct ing paral1el relief lines in the future. The <br /> wastewater treatment plant and lift stations are to be bunt in phases. with <br /> additional capacity constructed every five to ten years. By 1995. 11ft <br /> 5t3t Ions and force mains serving the Sink. Creek. basin and south of the <br /> wastewater treatment plant are to be constructed. The force mains serving <br /> these areas are to be oversized initial1y to avoid the added cost of paral1el <br /> re I ief mains. <br /> -,- <br />