Agenda - Planning Commission - 05/03/2018

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City of Ramsey Local Water Supply Plan Projection Method Describe the method used to project water demand, including assumptions for population and business growth and how water conservation and efficiency programs affect projected water demand: Populations were projected using linear interpolation of Metropolitan Council projections given in the 2015 System Statement for Ramsey. The projected population served was estimated by multiplying the projected person per household by the projected residential connections. The projected residential connections were calculated by taking the average for the annual increase in residential connections from 2011 to 2015. (60 residential connections added per year) and added onto the 2015 actual residential connections and extrapolated out to 2040. The person/ household (PPH) was calculated to decrease from 3.1 in 2017 to 2.7 in 2040 by taking the projected total population and dividing it by the projected total households. The average day demand was determined by multiplying the projected population served by 131 gallons per person per day (GPCD). The value 131 GPCD is the average GPCD for the last five years. The maximum daily demand was determined by multiplying the average day demand by 2.90, which is the max day peaking factor. E. Resource Sustainability Monitoring - Key DNR Benchmark Complete Table 8 by inserting information about source water quality and quantity monitoring efforts. List should include all production wells, observation wells, and source water intakes or reservoirs. Add rows to the table as needed. Find information on groundwater level monitoring program at: http://www.dnr.state.mn.us/waters/groundwater section/obwell/index.html Table 8. Information about source water quality and quantity monitoring MN Unique Well # or Surface Water ID Type of monitoring point Monitoring program • Frequency of monitoring Monitoring Method 161441 416183 580303 ❑X production well ❑ observation well ❑ source water intake ❑ source water reservoir ❑X production well ❑ observation well ❑ source water intake ❑ source water reservoir ❑X production well ❑ observation well ❑ source water intake ❑ routine MDH sampling ❑X routine water utility sampling ❑ other ❑ routine MDH sampling ❑X routine water utility sampling ❑ other ❑ routine MDH sampling ❑X routine water utility sampling ❑ continuous ❑ hourly ❑ daily ❑X monthly ❑ quarterly ❑ annually ❑ continuous ❑ hourly ❑ daily ❑X monthly ❑ quarterly ❑ annually ❑ continuous ❑ hourly ❑ daily ❑X monthly ❑X SCADA ❑ grab sampling ❑ steel tape ❑ stream gauge ❑X SCADA ❑ grab sampling ❑ steel tape ❑ stream gauge ❑X SCADA ❑ grab sampling ❑ steel tape ❑ stream gauge 18 April 7, 2017