08-07-2017 Council Packet - Laserfiche WebLink

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Water Storage Siting Study City of Lino Lakes WSB Project No. 2988-44 Page 5 for Lino Lakes. This factor can be used in conjunction with population projections and per capita usage to estimate future water demands. Table 1 below summarizes the City’s water usage data. Table 1. Lino Lakes Water Usage Year Average Daily Demand (MGD) Max Day Demand (MGD) Peaking Factor Per Capita Demand (gpd) 2010 1.36 5.56 4.09 91 2011 1.35 5.37 3.98 90 2012 1.67 6.73 4.03 110 2013 1.47 4.35 2.96 97 2014 1.22 3.89 3.19 79 2015 1.23 3.55 2.89 80 Average 1.38 4.92 3.57 90 Available Storage The City currently has two (2) one-million gallon elevated storage tanks, Tower One and Tower Two. Tower One is located in the northwest area of the City near 4th Avenue and Apollo Drive. Tower Two is located on the east side of the City on Otter Lake Road south of Main Street. Figure 1 shows the location of the existing water towers. Due to its proximity to the City’s production well field, Tower Two fills more quickly than Tower One and operates with an altitude valve that forces water to fill Tower One once the level in Tower Two reaches its overflow elevation. Fire Protection The Insurance Service Office (ISO) publishes fire storage guidelines, in which they recommend that a fire system capacities based on the type of city being served. Because the exact requirements of Lino Lakes’ system are not known, the standard ISO required available fire flow was used: 3,500 gpm for three hours. Therefore, the total required fire fighting storage volume is 630,000 gallons. Production Wells Lino Lakes has six production wells, four of which are centrally located on or near Birch Street, as shown on Figure 1. The highest capacity well is Well No. 3, which is capable of producing 1,200 gpm. One to three additional wells are expected to be needed prior to 2040. The number of wells required depends on the City’s ability to meet its peak factor reduction goals. For planning purposes, it is assumed that Well Nos. 7 (and 8 and 9, if necessary) will have a capacity of 1,000 gpm. Table 2 summarizes the City’s production capabilities with all wells in service and at firm capacity (with the largest well, Well No. 3, out of service).