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1/1 Analysis <br />The City of Hugo's sanitary sewer system is relatively new compared to other cities in the Metro Area. All of the lift stations and a majority of the <br />sewer lines were constructed from the 1970s onward. Approximately 8% of the residential housing in the City was constructed before 1970, and <br />none of the pre -1970 era private services have been evaluated for 1/1. However, the City televises its sanitary sewer lines in conjunction with its <br />street and utility improvement projects, at which time potential issues with private services are identified. <br />A comparison of the dry weather flow versus average annual flow for Hugo's Metershed region from 2012-2016 is given in Table 10-12 below <br />Dry weather flow is calculated as average flow during the months of December through February. The purpose of this comparison is to give a <br />general indication of the extent of 1/1 in the region. <br />Based on the difference between average and dry weather flow, averaged over 2012-2016, the estimated amount of clearwater entering the <br />system is approximately 36,000 gallons per day. <br />The percent increase from dry weather to average annual flows in the City of Hugo was less than 10% in every year except for 2016. A slight <br />increasing trend is indicated by the metering data from the last five years; the City will continue to monitor this data to see whether or not this <br />trend continues. The City's strategies, standards, and investments for reducing 1/1 are listed in the next section. <br />�r r <br />- 2040 COMPREHENSIVE PLAN UPDATE <br />I0]:�11AIRN E115h <br />for review only <br />Table 11-12 Dry Weather Flow vs. Average Annual <br />2012 <br />0.61 <br />0.62 <br />1.75% <br />2013 <br />0.64 <br />0.66 <br />3.78% <br />2014 <br />0.56 <br />0.60 <br />6.89% <br />2015 <br />0.55 <br />0.60 <br />8.75% <br />2016 <br />0.54 <br />0.60 <br />10.40% <br />COMPREHENSIVE SANITARY <br />SEWER PLAN <br />ri <br />