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St. Anthony Splash Pad Retrofit Feasibility Study <br />January 24, 2017 <br />Page 4 <br /> <br />K:\02170-430\Admin\Docs\MEMO_StA_SplashPadfinal.docx <br /> Illustration B: Sketch of a Recirculation Splash Pad System with a Treatment System. <br /> <br />Benefits <br /> Significant decrease in annual water consumption <br /> Effluent water is treated to potable water quality standards so no adjustments will be required if <br />treatment standards for stormwater reuse systems change <br /> Splash pads more likely to remain open during dry periods <br /> Maintain user experience <br /> <br />Drawbacks <br /> Additional certified staff, additional capital cost, and increase in equipment maintenance costs <br />make the cost of the recirculation treatment system significantly higher over the current <br />conditions. <br /> Recirculation systems may need more frequent maintenance than a flow through system, which <br />can result in public disappointment when the splash pad is out of service. <br />CENTRAL PARK RETROFIT DETAILS <br />Option 1 – Equipment Retrofit <br />The main suggested equipment retrofit for the Central Park splash pad is to reduce the flow rate going to <br />the tumble buckets and reduce the volume of water held by the tumble buckets. Reducing the volume of <br />the buckets and the flow rate by 33% would reduce the total flow rate from 166 gpm to 133 gp m. This <br />would save 1.4 million gallons per year (MGY), or about 20% of the total Central Park splash pad water <br />use. <br /> <br />Highlights <br /> Reduce splash pad water consumption up to 20%. <br /> Cost: No costs received from the manufacture at this time; estimated to be $7,500. <br />Option 2 – Operating Schedule Modification <br />The City could reduce the hours of the Central Park splash pad from 12 hours to 10 hours which would <br />reduce water usage by 0.2 million gallons or 3% of the total water use for the year. The City has already <br />throttled the valves at the Central Park splash pad, and savings due to additional throttling is unlikely. <br /> <br />Highlights <br /> Reduce splash pad water consumption up to 3%. <br /> Cost: $800 (Operating hour signage)