Ord 2018-009/amending the Water and Wastewater impact fees to be charged by the City in connection with new land development under Chapter 86, Article 5, Division 4 of the San Marcos City Code and associated land use assumptions

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Systemwide Land Use Assumptions for the Implementation of Impact Fees Growth Rate Data Growth can be characterized in two forms: Residential (population) and Nonresidential. Assumptions for Applying Growth Rates Several assumptions have been made in order to apply the growth rate to the Water and Wastewater Service Areas: • Future land uses will occur as shown on the Preferred Scenario Map • Known or anticipated developments will occur as presently planned • Densities will be as projected, based upon anticipated zoning districts • Growth rates occurring outside of the City Limits will be similar to the growth experienced within City Limits • Residential growth outside of the City Limits will be primarily single family • The City will be able to grow and serve its proposed impact fee service areas • The City will have the revenue to finance necessary improvements to the water and wastewater systems to accommodate growth • School facilities will be sufficient to accommodate the expected increase in school-age population Establishment of Residential Growth Rates In prior years, building permit data was used to determine residential population growth using the following calculations: Average Residential Permits per Year* Occupancy Rate= New Dwellings per Year New Dwellings per Year * Persons Per Household = Population Added per Year Population Added per Year * 10 years = Projected Population This projected population was then distributed over the 10 year time frame and a growth rate was assumed. More recently, the City has created a methodology for calculating growth rates and projecting future population based on historical data and meetings with the State Demographer. The average growth rate for the seven year period from 2010-2017 is 3.89%. The current growth rate from January 1, 2016-January 1, 2017 is 1.76%. A conservative growth rate of 1.78% was calculated during the Comprehensive Planning process in coordination with the State Demographer and is used for the City's planning processes. Since the conservative growth rate of 1.78% is typically used for planning purposes, this rate will be the primary rate used to project the population for the Water and Wastewater Service Areas. Establishment of Growth Rates for all Land Uses Changes in population affect the use of land. Increased population results in the conversion of vacant or agricultural lands and the additional need for nonresidential uses to accommodate the residential growth. To project nonresidential growth, it is assumed that the future acreage required to support the increased population will be consistent with the acreage of existing uses. Page 7