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f <br />MEMO TO: Mayor and CityiCouncil n / <br />FROM: Director of Public Works/Community Development y� <br />DATE: July 21, 1982 Q <br />SUBJECT: SANITARY SEWER FLOW MONITORING FOR INFLOW/INFILTRATION <br />STUDY <br />T.R.D.A has completed the required flow monitoring per Inflow/ <br />Infiltration contract. Since a major rainfall event has not <br />occurred, they have not been able to obtain desirable data on <br />inflow. <br />It is recommended that flow monitors be left inplace unitl a <br />major rainfall (lk inches or more) or the end of August, 1982 <br />whichever occurs first. <br />Cost of continued use of flow meters is $98.00 per week for <br />rental, if Mounds View personnel change the charts on the meters. <br />If the hoped for rainfall event occurs, then it will cost <br />approximately $610.00 to analyze data and write a letter report. <br />It is requested that the Council authorize utilizing budgeted <br />excess of $1,400.00 in Account #730-121-4515, due to underrun <br />on sewer root control and T.V. inspection costs, for extension <br />of flow monitoring of sanitary sewer system. <br />JCJ/bc <br />