CC WORKSESSION PACKET 01312017 - Laserfiche WebLink

Home Browse Search

701 Xenia Avenue South | Suite 300 | Minneapolis, MN 55416 | (763) 541-4800 Memorandum To: Mark Casey, City of St Anthony Village City Manager Jay Hartman, City of St Anthony Village Public Works Director From: Todd Hubmer, PE Bill Alms, PE Anneka Munsell, PE Date: January 23, 2017 Re: St. Anthony Splash Pad Retrofit Feasibility Study WSB Project No. 02170-430 INTRODUCTION The City of Saint Anthony Village has requested that WSB complete a feasibility study to review options to reduce potable water usage at the splash pads located in Central Park and Emerald Park , and to reduce reliance on potable water usage for irrigation in Central Park . EXISTING CONDITIONS Both the splash pads in Central Park and Emerald Park (Figure 1, Appendix A) are currently flow through systems connected to the storm sewer system. Each splash pad current configurations and usage rates are described below in more detail. Central Park The Central Park Splash Pad currently uses approximately 6.9 million gallons of water annually. The splash pad equipment consists of a series of tipping buckets and four water jets. The current splash pad flow rate is 166 gallons per minute (gpm) with a cycle time of four minutes. The City has previously reduced the flow rate by reducing the head at each of the four popcorn jets from 16 feet to five feet and reducing the run time from 14 minutes to four minutes. The current hours of operation are from 8am to 8pm (12 hours daily). In 2015 the splash pad operated for approximately 695 hours. Central Park irrigation systems are supplied by three locations: potable water that runs through a City owned meter, potable water that runs through a high school owned meter, and reuse water from the City’s reuse tank. The existing irrigation demand is approximately 7.0 million gallons annually. The typical break downs for this annual water usage is 1.4 million gallons of potable water from the City water meter, 1.0 million gallons of potable water from the High School water meter, and 4.6 million gallons of reuse water from the water reuse facility. Emerald Park Emerald Park Splash Pad currently uses approximately 9.3 million of gallons of water annually. The splash pad flow rate is currently 365 gpm at a three to five minute run time to activate all products. The City has previously reduced the flow rate through reducing the run time from 15 minutes to the three to five minute run time. The current hours of operation are from 8am to 8pm (12 hours daily). In 2015 the splash pad operated for approximately 425 hours.