Agenda - Environmental Policy Board - 11/21/2016

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Local Water Supply Plan Template July 8, 2016 Treatment and storage capacity versus demand It is recommended that total storage equal or exceed the average daily demand. Discuss the difference between current storage and treatment capacity versus the water supplier's projected average water demand over the next 10 years (see Table 7 for projected water demand): The current treatment capacity is 11 MGD and storage is 4 MGD. Average day demand is projected to increase from 1.81 MGD in 2015 to 2.38 MGD in 2025. The additional 0.57 MGD of demand is within the system's storage and treatment capacity based on Ten States Standards recommendation 7.0.1 that total storage shall equal the average daily consumption. C. Water Sources Complete Table 6 by listing all types of water sources that supply water to the system, including groundwater, surface water, interconnections with other water suppliers, or others. Provide the name of each source (aquifer name, river or lake name, name of interconnecting water supplier) and the Minnesota unique well number or intake ID, as appropriate. Report the year the source was installed or established and the current capacity. Provide information about the depth of all wells. Describe the status of the source (active, inactive, emergency only, retail/wholesale interconnection) and if the source facilities have a dedicated emergency power source. Add rows to the table as needed for each installation. Include copies of well records and maintenance summary for each well that has occurred since your last approved plan in Appendix 1. Table 4.Water sources and status Resource Type Resource Name MN Unique Year Capacity Well Status of Normal Does this Source (Groundwater, Well#or Installed (Gallons Depth and Emergency have a Dedicated Surface water, Intake ID per (Feet) Operations(active, Emergency Power Interconnection) Minute) inactive, Source?(Yes or emergency only, No) retail/wholesale interconnection)) Groundwater Well#1 161441 1984 1 700 320 Active No Groundwater Well#2 416183 1987 220 320 Active No Groundwater Well#3 580303 1997 1450 345 Active No Groundwater Well#4 580313 1998 850 321 Active No Groundwater Well#5 593672 2000 850 316 Active Yes Groundwater Well#6 706840 2005 900 390 Active No Groundwater Well#7 743832 2007 850 1 332 Active No Groundwater Well#8 743833 2007 1 1400 1 354 Active No Limits on Emergency Interconnections Discuss any limitations on the use of the water sources (e.g. not to be operated simultaneously, limitations due to blending, aquifer recovery issues etc.) and the use of interconnections, including capacity limits or timing constraints (i.e. only 200 gallons per minute are available 14