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Appendix Town of Hills 1MIEMORAIVD UM TO: Mayor Phelps & Board of Commissioners FROM: Eric Peterson, Town Manager DATE: December 1, 2003 of Water Capacity Analysis Necessitated by the Proposed Waterstone SUBJECT. . Update Development & their Requested Annexation Development has formally requested annexation and approwater sus law 11 The proposed Waterstone p Plan. One of the critical components of the review process is to ensure that an adequate oughat r cute. Even be available to serve Waterstone as well as other planne e Funds issnot yet complete, the staff felt it though the Financial Analysis of the General and iWater/Sewer n the Board for review as soon as possible. was important to get the updated Water Capacity It is important to keep in mind that this analysis is a model and there is no one (1) right way to perform This model is intended to provide a "snapshot" of what Hillsborough's it is a em depl,y this type of forecast. ears, iven a set of assumptions situation could look like over the next ten (10) y g Therefore, the Town Manager and staff encourage thhiBonrod 1 the assumptions can easily be changed. identify changes they would like to make to the assumptions d uses thatdare the basis for Commissioners to timing, year, and density of the la especially as it relates to the location, type, this Water Capacity Analysis • The staff did it's best to include future developments in thas�analysis since are likely to be considered over the next 10 years. Please consider presentati � s complete. adjustments will likely be made before the Waterstone Annexation Feasibility J the previous Water Capacity Analysis are very similar to past staff The basic assumptions used in p peaking factor used y amount of water used for residential units; retail spaces ea or impact on the bottom line results. In the though this did not have a ) p increased from 58% to 62.2 %, « yield" from Phase II of the reservoir has been estimated at 1.2 Vega This was mgd• previous studies the safe yi based on estimates from the design engineers. The new figure used estimates tes do not include the water The reason for using the more conservative number is that these filters during a plant expansion (a 5.0% decrease was made for this is limited necessary for backwashing the fist g an additional 5.0 /o since there Also, the Town Manager felt it safest to reduce this number by he ant to support the 1.2 mgd estimate. In discussions with to Town Engineer, discuss historical data as this poi p . felt that these numbers may be too conservative, so this is an assumptth s the analBysis is that the amount of and consider changing. One concern regarding the assumptions o • water use for long -term redevelopment within Hillsborough's current corporate limits is underestimated — this is a point the Board may wish to consider and/or discuss as it evaluates this information. Water Capacity for Committed Customers Only _p Y Surplus of 411,982 Bpd at the end of FY14. This is without expanding the Water Treatment Plant an Reservoir. It also would represent 86% of peak day 1 934t187 square feet of office, retail, or light 411,982 gpd is the equivalent of 1,160 houses or , industrial space. r_ Ar_,. +1, Orirnlino, 27278