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Local Water Supply Plan Template —December 8, 2015 <br />Treatment <br />Site ID <br />(Plant <br />Name or <br />Well ID) <br />Year <br />Constructed <br />Treatment <br />Capacity <br />(GPD) <br />Treatment <br />Method <br />Treatment <br />Type <br />Annual <br />Amount of <br />Residuals <br />Disposal <br />Process <br />for <br />Residuals <br />Do You <br />Reclaim <br />Filter <br />Backwash <br />Water? <br />and addition of <br />polyphosphate <br />Well 4 <br />1995 <br />1,080,000 <br />Chemical <br />addition <br />Chlorination, <br />fluoridation, <br />and addition of <br />polyphosphate <br />n/a <br />n/a <br />n/a <br />Well 5 <br />2005 <br />1,584,000 <br />Chemical <br />addition <br />Chlorination, <br />fluoridation, <br />and addition of <br />polyphosphate <br />n/a <br />n/a <br />n/a <br />Well 6 <br />2016 <br />1,728,000 <br />Chemical <br />addition <br />Chlorination, <br />fluoridation, <br />and addition of <br />polyphosphate <br />n/a <br />n/a <br />n/a <br />Total <br />n/a <br />7,984,000 <br />n/a <br />n/a <br />n/a <br />n/a <br />n/a <br />Complete Table 5 with information about storage structures. Describe the type (i.e. elevated, ground, <br />etc.), the storage capacity of each type of structure, the year each structure was constructed, and the <br />primary material for each structure. Add rows to the table as needed. <br />Table 5. Storage capacity, as of the end of the last calendar year <br />Structure Name <br />Type of Storage <br />Structure <br />Year Constructed <br />Primary Material <br />Storage Capacity <br />(Gallons) <br />Tower 1 <br />Elevated storage <br />1992 <br />Steel <br />1,000,000 <br />Tower 2 <br />Elevated storage <br />1996 <br />Steel <br />1,000,000 <br />Total <br />n/a <br />n/a <br />n/a <br />2,000,000 <br />Treatment and storage capacity versus demand <br />It is recommended that total storage equal or exceed the average daily demand. <br />Discuss the difference between current storage and treatment capacity versus the water supplier's <br />projected average water demand over the next 10 years (see Table 7 for projected water demand): <br />From 2010 to 2015, the average daily demand was 1.4 MG; the City's current storage capacity exceeds the average <br />daily demand by 0.6 MG. It is anticipated that the highest average daily demand over the proceeding decade will <br />be 2.74 MGD. The City is currently undergoing a water storage siting study and plans to construct a third water <br />storage structure by 2020. <br />C. Water Sources <br />Complete Table 6 by listing all types of water sources that supply water to the system, including <br />groundwater, surface water, interconnections with other water suppliers, or others. Provide the name <br />of each source (aquifer name, river or lake name, name of interconnecting water supplier) and the <br />Minnesota unique well number or intake ID, as appropriate. Report the year the source was installed or <br />12 <br />