2018-09-26 CC Packet - Laserfiche WebLink

Home Browse Search

Local Water Supply Plan—Centerville 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): Well 2 has a capacity of 1.51 MGD which exceeds the projected 2025 maximum day demand of 0.93 MGD and the 2040 maximum day demand of 0.97 MGD. Well 1 is a backup well that could be used in an emergency to supply 0.86 MGD which would be supplemented with the interconnection to City of Lino Lakes to cover maximum day demand. A new well is not planned; instead, Well 1 will be redeveloped and returned to active status. The existing storage volume of 0. 5 MG exceeds the projected 2025 average day demand of 0.31 MGD and the 2040 average day demand of 0.32 MGD. No additional water storage is needed. 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 6.Water sources and status I 1 r Groundwater PDC-Jordan Well 1-511091 1988 600 267 Emergency No Groundwater PDC-Jordan Well 2-512748 1993 1,050 187 Active No Interconnection Lino Lakes 2,000 - Emergency No power needed. 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 from the City of Prior Lake, and it is estimated to take 6 hours to establish the emergency connection). If there are no limitations, list none. Emergency interconnection with Lino Lakes can supply up to 2,000 gpm. Connection includes a pressure sustaining valve in case of low pressure on the supply side. 7 52