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15 replacement of the local storm drainage system is conservatively estimated to be 10%, based upon the relative cost to construct and maintain this critical local infrastructure. In other words, if the Maintenance District were required to construct and maintain the local storm drainage system, the budget would increase by at least 10%. The City of Pleasanton owns and maintains local public streets throughout the Maintenance District. These public streets provide access to the Improvements for its enjoyment as well as efficient maintenance. The contribution from the City of Pleasanton toward general benefit from the maintenance, rehabilitation, and replacement of the local public streets is conservatively estimated to be 10%, based upon the relative cost to construct and maintain this critical local infrastructure. In other words, if the Maintenance District were required to construct and maintain the local public streets, the budget would increase by at least 10%. The value of the initial Improvements constructed by the Developer can be quantified and monetized as an annuity to be amortized. Since the initial Improvements were performed and paid for by non-assessment funds, this "annuity" can be used to offset general benefit costs and is conservatively estimated to contribute 20%. In other words, if the Maintenance District were required to construct all the Improvements, the annual budget would increase by at least 20%. In other words, there is a 11 .9% contribution needed to offset the general benefits conferred by the Improvements, and there is a 50% contribution from City of Pleasanton supporting local infrastructure, along with the amortized value of initial construction. This 50% contribution more than satisfies the general benefit requirements. The estimates used above for the City of Pleasanton's "in-kind", non-monetary contributions for the maintenance, rehabilitation and replacement of the curbs and gutters, storm drainage systems, local streets (the "supportive infrastructure"), and the value of the initial Improvements constructed by the Developer, are based on industry standards; typical and standard quantity ratios between this supportive infrastructure (including the City's relative associated maintenance costs) and similar Improvements; and on the assessment Engineer's professional experience on planning and working in such projects. The City will also make a contribution of $9,703 from the General Fund for the cost of maintenance of the "general benefit" area along Arroyo, that was at one time included in this district. Similarly, City staff hours dedicated to the administration of the assessment is estimated to be at least $1 ,800 per year. However, since the budget only accounts for $600, the $1 ,200 difference is another monetary contribution from the City's General Fund. The total of these two amounts, also helps offset any general benefit provided by the City of Pleasanton Landscape Maintenance District No 1984-1, Ponderosa Engineer's Report, Fiscal Year 2021-22