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<br /> <br />Item 5.8. <br /> <br />1306\ Orono Parkway <br />Elk RIver, MN \\330 <br /> <br />December 10, 2004 <br /> <br />File No. 822560]-0030 <br /> <br />Honorable Mayor and City Council <br />City of Elk River <br />13065 Orono Parkway <br />Elk River, MN 55330 <br /> <br />RE: HEADWORK.5 IMPROVEMENT PROJECT <br />WASTEWATER TREATMENT PLANT (WWTP) <br /> <br />Dear Mayor and Councilmembers: <br /> <br />Attached is the Technical Memo prepared for the headworks pre-treatment improvements at the <br />WWTP. As the City Council will recall, this is the beginning of the WWTP where the sewage <br />influent is pumped from three major lift stations. Those three lift stations are located in East Elk <br />River, Trunk Highway 10 by the Chamber of Commerce building, and along Main Street at Evans <br />Avenue. They each collect sewage from various portions of the City and convey it to the WWTP. <br /> <br />The headworks portion of the WWTP was initially constructed in the 1975 upgrade. It has <br />occasionally, in the last 12 - 18 months, been overwhelmed by the amount of flow entering the <br />WWTP. Therefore, the City Council authorized this study to look at upgrading this portion of the <br />WWTP in early 2004. Completion of this study waited until adoption of the City's Comprehensive <br />Plan so that the study could look at an upgrade to the headworks portion of the WWTP which <br />would be appropriate long into the future. <br /> <br />The study basically recommends installation of new equipment that will provide capacity to this <br />portion of the WWTP for up to 3.5 million gallons per day and will fit in the existing building. The <br />one expansion to the building that is proposed is for the removal of grit. Currently, this is done in a <br />very labor intensive method by filling 20-gallon plastic buckets and handling them manually. The <br />recommendation for the upgrade is to use a conveyer system into a two-yard dumpster and have it <br />mechanically emptied to minimize the labor involved and to improve the safety aspects of this <br />operation. On page 15 of the report is an opinion of probable cost which estimates the construction <br />costs of the proposed improvements, including a contingency, at $1,132,000. <br /> <br />Phone: 763.635.1000 <br />Fax: 763.63\.1090 <br /> <br />www.cLelk-river.mn.us <br />