Agenda - Environmental Policy Board - 11/21/2016

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Local Water Supply Plan Template July 8, 2016 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 142 gallons per person per day(GPCD). The value 142 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 5.Information about source water quality and quantity monitoring MN Unique Well#or Type of monitoring Monitoring program Frequency of Monitoring Method Surface Water ID point monitoring 161441 0 production well ❑ routine MDH ❑ continuous 0 SCADA ❑ observation well sampling ❑ hourly ❑ grab sampling ❑ source water 0 routine water ❑ daily ❑ steel tape intake utility sampling 0 monthly ❑ stream gauge ❑ source water ❑ other ❑ quarterly reservoir ❑ annually 416183 0 production well ❑ routine MDH ❑ continuous 0 SCADA ❑ observation well sampling ❑ hourly ❑ grab sampling ❑ source water 0 routine water ❑ daily ❑ steel tape intake utility sampling 0 monthly ❑ stream gauge ❑ source water ❑ other ❑ quarterly reservoir ❑ annually 580303 0 production well ❑ routine MDH ❑ continuous 0 SCADA ❑ observation well sampling ❑ hourly ❑ grab sampling ❑ source water 0 routine water ❑ daily ❑ steel tape intake utility sampling 0 monthly ❑ stream gauge ❑ source water ❑ other ❑ quarterly reservoir ❑ annually 18