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<br /> Methodo I og-X <br /> <br /> The methodology used in this plan involved several steps) as foHows: <br /> 1. The boundaries of the North San Marcos Service Area were selected, <br /> with primary consIderatIon gIven to the abUity to serve an area with a <br /> centrallzed wastewater col1ection and treatment system. The area selected. <br /> drains into sectIons of Sink Creek) the Blanco River) and an unnamed tributary <br /> of the San Marcos RIver) but ultImately can be most efficIently served by a <br /> centra1ized treatment facility loc.ated on an l.1rU'\affied tributary to the San <br /> Marcos River) close to the confluence wIth the San Marcos RIver (see <br /> attached map). Table 1 summarizes the acreages tn each subbasin. <br /> 2. A land use map was prepared for the 25-square ml1e Service Area. The <br /> land uses are based on annual population growth projections for the Aust in <br /> MSA) Hays County, the City of San Marcos, and specifically the North San <br /> Marcos Service Area. Land uses were determIned on the basis of the City's <br /> Comprehensive Plan, topographIc and other environmental constraints) access <br /> to roadways, and market considerations. The land use classiflcations and <br /> densities are compatible with the CIty's Comprehensive Plan and may be <br /> incorporated as land use amendments to the Comprehensive Plan In late 1985. <br /> They provided a reasonable basis for determining the amount and spatial <br /> distribution of future wastewater generation throughout the Service Area. <br /> 3. The land use plan was evaluated over time In order to estab1tsh <br /> buildout schedules for land uses over a 20-year plannIng period. Two <br /> independent real estate market studIes and an analysIs of recent development <br /> trends were used to determine the likely absorption rates for land uses <br /> within the North San Marcos serVIce area. <br /> 4. Wastewater flows were calculated by multiplying the acreages of each <br /> land use category by I iving unit equivalents (LUEs>. LUEs were calculated <br /> based on the fol1owing criteria: <br /> A 100 gal1ons per capita-day of average dry weather flow <br /> B. 3 persons per LUE, or 300 gal1ons per day of average dry <br /> weather flow <br /> C. 1000 gallons per acre-day infi1tration/infJow al1owance for <br /> calculation of peak wet-weather now <br /> -'/- <br /> ... <br />